1009ea47eSEdward Tomasz Napierala /*- 24d846d26SWarner Losh * SPDX-License-Identifier: BSD-2-Clause 3718cf2ccSPedro F. Giffuni * 4009ea47eSEdward Tomasz Napierala * Copyright (c) 2012 The FreeBSD Foundation 5009ea47eSEdward Tomasz Napierala * 6009ea47eSEdward Tomasz Napierala * This software was developed by Edward Tomasz Napierala under sponsorship 7009ea47eSEdward Tomasz Napierala * from the FreeBSD Foundation. 8009ea47eSEdward Tomasz Napierala * 9009ea47eSEdward Tomasz Napierala * Redistribution and use in source and binary forms, with or without 10009ea47eSEdward Tomasz Napierala * modification, are permitted provided that the following conditions 11009ea47eSEdward Tomasz Napierala * are met: 12009ea47eSEdward Tomasz Napierala * 1. Redistributions of source code must retain the above copyright 13009ea47eSEdward Tomasz Napierala * notice, this list of conditions and the following disclaimer. 14009ea47eSEdward Tomasz Napierala * 2. Redistributions in binary form must reproduce the above copyright 15009ea47eSEdward Tomasz Napierala * notice, this list of conditions and the following disclaimer in the 16009ea47eSEdward Tomasz Napierala * documentation and/or other materials provided with the distribution. 17009ea47eSEdward Tomasz Napierala * 18009ea47eSEdward Tomasz Napierala * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19009ea47eSEdward Tomasz Napierala * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20009ea47eSEdward Tomasz Napierala * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21009ea47eSEdward Tomasz Napierala * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22009ea47eSEdward Tomasz Napierala * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23009ea47eSEdward Tomasz Napierala * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24009ea47eSEdward Tomasz Napierala * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25009ea47eSEdward Tomasz Napierala * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26009ea47eSEdward Tomasz Napierala * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27009ea47eSEdward Tomasz Napierala * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28009ea47eSEdward Tomasz Napierala * SUCH DAMAGE. 29009ea47eSEdward Tomasz Napierala * 30009ea47eSEdward Tomasz Napierala */ 31009ea47eSEdward Tomasz Napierala 32b7a65e39SEdward Tomasz Napierala #include <sys/cdefs.h> 33009ea47eSEdward Tomasz Napierala #include <sys/param.h> 347aab9c14SJohn Baldwin #include <sys/bio.h> 35009ea47eSEdward Tomasz Napierala #include <sys/condvar.h> 36009ea47eSEdward Tomasz Napierala #include <sys/conf.h> 37a9f2f291SEdward Tomasz Napierala #include <sys/endian.h> 38009ea47eSEdward Tomasz Napierala #include <sys/eventhandler.h> 39009ea47eSEdward Tomasz Napierala #include <sys/file.h> 40009ea47eSEdward Tomasz Napierala #include <sys/kernel.h> 41009ea47eSEdward Tomasz Napierala #include <sys/kthread.h> 42009ea47eSEdward Tomasz Napierala #include <sys/lock.h> 43009ea47eSEdward Tomasz Napierala #include <sys/malloc.h> 44bd6bb493SRichard Scheffenegger #include <sys/mbuf.h> 45009ea47eSEdward Tomasz Napierala #include <sys/mutex.h> 46009ea47eSEdward Tomasz Napierala #include <sys/module.h> 47*4eb861d3SMitchell Horne #include <sys/reboot.h> 48f41492b0SEdward Tomasz Napierala #include <sys/socket.h> 49bd6bb493SRichard Scheffenegger #include <sys/sockopt.h> 50009ea47eSEdward Tomasz Napierala #include <sys/sysctl.h> 51009ea47eSEdward Tomasz Napierala #include <sys/systm.h> 52009ea47eSEdward Tomasz Napierala #include <sys/sx.h> 53*4eb861d3SMitchell Horne 54009ea47eSEdward Tomasz Napierala #include <vm/uma.h> 55009ea47eSEdward Tomasz Napierala 56009ea47eSEdward Tomasz Napierala #include <cam/cam.h> 57009ea47eSEdward Tomasz Napierala #include <cam/cam_ccb.h> 58009ea47eSEdward Tomasz Napierala #include <cam/cam_xpt.h> 59009ea47eSEdward Tomasz Napierala #include <cam/cam_debug.h> 60009ea47eSEdward Tomasz Napierala #include <cam/cam_sim.h> 61009ea47eSEdward Tomasz Napierala #include <cam/cam_xpt_sim.h> 62009ea47eSEdward Tomasz Napierala #include <cam/cam_xpt_periph.h> 63009ea47eSEdward Tomasz Napierala #include <cam/cam_periph.h> 64009ea47eSEdward Tomasz Napierala #include <cam/scsi/scsi_all.h> 65009ea47eSEdward Tomasz Napierala #include <cam/scsi/scsi_message.h> 66009ea47eSEdward Tomasz Napierala 67ddc5fd90SEdward Tomasz Napierala #include <dev/iscsi/icl.h> 68321b17ecSEdward Tomasz Napierala #include <dev/iscsi/icl_wrappers.h> 69ddc5fd90SEdward Tomasz Napierala #include <dev/iscsi/iscsi_ioctl.h> 70ddc5fd90SEdward Tomasz Napierala #include <dev/iscsi/iscsi_proto.h> 71ddc5fd90SEdward Tomasz Napierala #include <dev/iscsi/iscsi.h> 72009ea47eSEdward Tomasz Napierala 73009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 74009ea47eSEdward Tomasz Napierala #include <sys/socketvar.h> 75009ea47eSEdward Tomasz Napierala #endif 76009ea47eSEdward Tomasz Napierala 772ebde326SEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 782ebde326SEdward Tomasz Napierala FEATURE(iscsi_kernel_proxy, "iSCSI initiator built with ICL_KERNEL_PROXY"); 792ebde326SEdward Tomasz Napierala #endif 802ebde326SEdward Tomasz Napierala 817b02c1e8SJohn Baldwin #ifdef COMPAT_FREEBSD13 827b02c1e8SJohn Baldwin struct iscsi_daemon_request13 { 837b02c1e8SJohn Baldwin unsigned int idr_session_id; 847b02c1e8SJohn Baldwin struct iscsi_session_conf idr_conf; 857b02c1e8SJohn Baldwin uint8_t idr_isid[6]; 867b02c1e8SJohn Baldwin uint16_t idr_tsih; 877b02c1e8SJohn Baldwin uint16_t idr_spare_cid; 887b02c1e8SJohn Baldwin struct iscsi_session_limits idr_limits; 897b02c1e8SJohn Baldwin int idr_spare[4]; 907b02c1e8SJohn Baldwin }; 917b02c1e8SJohn Baldwin 927b02c1e8SJohn Baldwin #define ISCSIDWAIT13 _IOR('I', 0x01, struct iscsi_daemon_request13) 937b02c1e8SJohn Baldwin #endif 947b02c1e8SJohn Baldwin 95009ea47eSEdward Tomasz Napierala /* 96009ea47eSEdward Tomasz Napierala * XXX: This is global so the iscsi_unload() can access it. 97009ea47eSEdward Tomasz Napierala * Think about how to do this properly. 98009ea47eSEdward Tomasz Napierala */ 99009ea47eSEdward Tomasz Napierala static struct iscsi_softc *sc; 100009ea47eSEdward Tomasz Napierala 101e0d69c5aSPawel Biernacki SYSCTL_NODE(_kern, OID_AUTO, iscsi, CTLFLAG_RD | CTLFLAG_MPSAFE, 0, 102e0d69c5aSPawel Biernacki "iSCSI initiator"); 103009ea47eSEdward Tomasz Napierala static int debug = 1; 104605a34b0SEdward Tomasz Napierala SYSCTL_INT(_kern_iscsi, OID_AUTO, debug, CTLFLAG_RWTUN, 1051f6b2af2SAlexander Motin &debug, 0, "Enable debug messages"); 106bd6bb493SRichard Scheffenegger 107009ea47eSEdward Tomasz Napierala static int ping_timeout = 5; 108605a34b0SEdward Tomasz Napierala SYSCTL_INT(_kern_iscsi, OID_AUTO, ping_timeout, CTLFLAG_RWTUN, &ping_timeout, 1091f6b2af2SAlexander Motin 0, "Timeout for ping (NOP-Out) requests, in seconds"); 110009ea47eSEdward Tomasz Napierala static int iscsid_timeout = 60; 111605a34b0SEdward Tomasz Napierala SYSCTL_INT(_kern_iscsi, OID_AUTO, iscsid_timeout, CTLFLAG_RWTUN, &iscsid_timeout, 1121f6b2af2SAlexander Motin 0, "Time to wait for iscsid(8) to handle reconnection, in seconds"); 113009ea47eSEdward Tomasz Napierala static int login_timeout = 60; 114605a34b0SEdward Tomasz Napierala SYSCTL_INT(_kern_iscsi, OID_AUTO, login_timeout, CTLFLAG_RWTUN, &login_timeout, 1151f6b2af2SAlexander Motin 0, "Time to wait for iscsid(8) to finish Login Phase, in seconds"); 116009ea47eSEdward Tomasz Napierala static int maxtags = 255; 117605a34b0SEdward Tomasz Napierala SYSCTL_INT(_kern_iscsi, OID_AUTO, maxtags, CTLFLAG_RWTUN, &maxtags, 1181f6b2af2SAlexander Motin 0, "Max number of IO requests queued"); 119f1f12e40SEdward Tomasz Napierala static int fail_on_disconnection = 0; 120f1f12e40SEdward Tomasz Napierala SYSCTL_INT(_kern_iscsi, OID_AUTO, fail_on_disconnection, CTLFLAG_RWTUN, 121f1f12e40SEdward Tomasz Napierala &fail_on_disconnection, 0, "Destroy CAM SIM on connection failure"); 122481b36c6SSteven Hartland static int fail_on_shutdown = 1; 123481b36c6SSteven Hartland SYSCTL_INT(_kern_iscsi, OID_AUTO, fail_on_shutdown, CTLFLAG_RWTUN, 124481b36c6SSteven Hartland &fail_on_shutdown, 0, "Fail disconnected sessions on shutdown"); 125009ea47eSEdward Tomasz Napierala 126009ea47eSEdward Tomasz Napierala static MALLOC_DEFINE(M_ISCSI, "iSCSI", "iSCSI initiator"); 127009ea47eSEdward Tomasz Napierala static uma_zone_t iscsi_outstanding_zone; 128009ea47eSEdward Tomasz Napierala 129009ea47eSEdward Tomasz Napierala #define CONN_SESSION(X) ((struct iscsi_session *)X->ic_prv0) 130009ea47eSEdward Tomasz Napierala #define PDU_SESSION(X) (CONN_SESSION(X->ip_conn)) 131009ea47eSEdward Tomasz Napierala 132009ea47eSEdward Tomasz Napierala #define ISCSI_DEBUG(X, ...) \ 133b1277ad1SEdward Tomasz Napierala do { \ 134b1277ad1SEdward Tomasz Napierala if (debug > 1) \ 135009ea47eSEdward Tomasz Napierala printf("%s: " X "\n", __func__, ## __VA_ARGS__);\ 136009ea47eSEdward Tomasz Napierala } while (0) 137009ea47eSEdward Tomasz Napierala 138009ea47eSEdward Tomasz Napierala #define ISCSI_WARN(X, ...) \ 139b1277ad1SEdward Tomasz Napierala do { \ 140009ea47eSEdward Tomasz Napierala if (debug > 0) { \ 141009ea47eSEdward Tomasz Napierala printf("WARNING: %s: " X "\n", \ 142009ea47eSEdward Tomasz Napierala __func__, ## __VA_ARGS__); \ 143b1277ad1SEdward Tomasz Napierala } \ 144009ea47eSEdward Tomasz Napierala } while (0) 145009ea47eSEdward Tomasz Napierala 146009ea47eSEdward Tomasz Napierala #define ISCSI_SESSION_DEBUG(S, X, ...) \ 147b1277ad1SEdward Tomasz Napierala do { \ 148009ea47eSEdward Tomasz Napierala if (debug > 1) { \ 149009ea47eSEdward Tomasz Napierala printf("%s: %s (%s): " X "\n", \ 150009ea47eSEdward Tomasz Napierala __func__, S->is_conf.isc_target_addr, \ 151009ea47eSEdward Tomasz Napierala S->is_conf.isc_target, ## __VA_ARGS__); \ 152b1277ad1SEdward Tomasz Napierala } \ 153009ea47eSEdward Tomasz Napierala } while (0) 154009ea47eSEdward Tomasz Napierala 155009ea47eSEdward Tomasz Napierala #define ISCSI_SESSION_WARN(S, X, ...) \ 156b1277ad1SEdward Tomasz Napierala do { \ 157009ea47eSEdward Tomasz Napierala if (debug > 0) { \ 158009ea47eSEdward Tomasz Napierala printf("WARNING: %s (%s): " X "\n", \ 159009ea47eSEdward Tomasz Napierala S->is_conf.isc_target_addr, \ 160009ea47eSEdward Tomasz Napierala S->is_conf.isc_target, ## __VA_ARGS__); \ 161b1277ad1SEdward Tomasz Napierala } \ 162009ea47eSEdward Tomasz Napierala } while (0) 163009ea47eSEdward Tomasz Napierala 164009ea47eSEdward Tomasz Napierala #define ISCSI_SESSION_LOCK(X) mtx_lock(&X->is_lock) 165009ea47eSEdward Tomasz Napierala #define ISCSI_SESSION_UNLOCK(X) mtx_unlock(&X->is_lock) 166009ea47eSEdward Tomasz Napierala #define ISCSI_SESSION_LOCK_ASSERT(X) mtx_assert(&X->is_lock, MA_OWNED) 167c215ad3aSAlexander Motin #define ISCSI_SESSION_LOCK_ASSERT_NOT(X) mtx_assert(&X->is_lock, MA_NOTOWNED) 168009ea47eSEdward Tomasz Napierala 169009ea47eSEdward Tomasz Napierala static int iscsi_ioctl(struct cdev *dev, u_long cmd, caddr_t arg, 170009ea47eSEdward Tomasz Napierala int mode, struct thread *td); 171009ea47eSEdward Tomasz Napierala 172009ea47eSEdward Tomasz Napierala static struct cdevsw iscsi_cdevsw = { 173009ea47eSEdward Tomasz Napierala .d_version = D_VERSION, 174009ea47eSEdward Tomasz Napierala .d_ioctl = iscsi_ioctl, 175009ea47eSEdward Tomasz Napierala .d_name = "iscsi", 176009ea47eSEdward Tomasz Napierala }; 177009ea47eSEdward Tomasz Napierala 178009ea47eSEdward Tomasz Napierala static void iscsi_pdu_queue_locked(struct icl_pdu *request); 179009ea47eSEdward Tomasz Napierala static void iscsi_pdu_queue(struct icl_pdu *request); 180009ea47eSEdward Tomasz Napierala static void iscsi_pdu_update_statsn(const struct icl_pdu *response); 181009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_nop_in(struct icl_pdu *response); 182009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_scsi_response(struct icl_pdu *response); 183aa75114cSAlexander Motin static void iscsi_pdu_handle_task_response(struct icl_pdu *response); 184009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_data_in(struct icl_pdu *response); 185009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_logout_response(struct icl_pdu *response); 186009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_r2t(struct icl_pdu *response); 187009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_async_message(struct icl_pdu *response); 188009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_reject(struct icl_pdu *response); 189009ea47eSEdward Tomasz Napierala static void iscsi_session_reconnect(struct iscsi_session *is); 190009ea47eSEdward Tomasz Napierala static void iscsi_session_terminate(struct iscsi_session *is); 191009ea47eSEdward Tomasz Napierala static void iscsi_action(struct cam_sim *sim, union ccb *ccb); 192009ea47eSEdward Tomasz Napierala static struct iscsi_outstanding *iscsi_outstanding_find(struct iscsi_session *is, 193009ea47eSEdward Tomasz Napierala uint32_t initiator_task_tag); 194aa75114cSAlexander Motin static struct iscsi_outstanding *iscsi_outstanding_add(struct iscsi_session *is, 195604c023fSEdward Tomasz Napierala struct icl_pdu *request, union ccb *ccb, 196604c023fSEdward Tomasz Napierala uint32_t *initiator_task_tagp); 197009ea47eSEdward Tomasz Napierala static void iscsi_outstanding_remove(struct iscsi_session *is, 198009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io); 199009ea47eSEdward Tomasz Napierala 200009ea47eSEdward Tomasz Napierala static bool 201009ea47eSEdward Tomasz Napierala iscsi_pdu_prepare(struct icl_pdu *request) 202009ea47eSEdward Tomasz Napierala { 203009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 204009ea47eSEdward Tomasz Napierala struct iscsi_bhs_scsi_command *bhssc; 205009ea47eSEdward Tomasz Napierala 206009ea47eSEdward Tomasz Napierala is = PDU_SESSION(request); 207009ea47eSEdward Tomasz Napierala 208009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 209009ea47eSEdward Tomasz Napierala 210009ea47eSEdward Tomasz Napierala /* 211009ea47eSEdward Tomasz Napierala * We're only using fields common for all the request 212009ea47eSEdward Tomasz Napierala * (initiator -> target) PDUs. 213009ea47eSEdward Tomasz Napierala */ 214009ea47eSEdward Tomasz Napierala bhssc = (struct iscsi_bhs_scsi_command *)request->ip_bhs; 215009ea47eSEdward Tomasz Napierala 216009ea47eSEdward Tomasz Napierala /* 217009ea47eSEdward Tomasz Napierala * Data-Out PDU does not contain CmdSN. 218009ea47eSEdward Tomasz Napierala */ 219009ea47eSEdward Tomasz Napierala if (bhssc->bhssc_opcode != ISCSI_BHS_OPCODE_SCSI_DATA_OUT) { 2202124e3b0SAlexander Motin if (ISCSI_SNGT(is->is_cmdsn, is->is_maxcmdsn) && 221009ea47eSEdward Tomasz Napierala (bhssc->bhssc_opcode & ISCSI_BHS_OPCODE_IMMEDIATE) == 0) { 222009ea47eSEdward Tomasz Napierala /* 223009ea47eSEdward Tomasz Napierala * Current MaxCmdSN prevents us from sending any more 224009ea47eSEdward Tomasz Napierala * SCSI Command PDUs to the target; postpone the PDU. 225009ea47eSEdward Tomasz Napierala * It will get resent by either iscsi_pdu_queue(), 226009ea47eSEdward Tomasz Napierala * or by maintenance thread. 227009ea47eSEdward Tomasz Napierala */ 228009ea47eSEdward Tomasz Napierala #if 0 2292124e3b0SAlexander Motin ISCSI_SESSION_DEBUG(is, "postponing send, CmdSN %u, " 2302124e3b0SAlexander Motin "ExpCmdSN %u, MaxCmdSN %u, opcode 0x%x", 2312124e3b0SAlexander Motin is->is_cmdsn, is->is_expcmdsn, is->is_maxcmdsn, 2322124e3b0SAlexander Motin bhssc->bhssc_opcode); 233009ea47eSEdward Tomasz Napierala #endif 234009ea47eSEdward Tomasz Napierala return (true); 235009ea47eSEdward Tomasz Napierala } 236009ea47eSEdward Tomasz Napierala bhssc->bhssc_cmdsn = htonl(is->is_cmdsn); 237009ea47eSEdward Tomasz Napierala if ((bhssc->bhssc_opcode & ISCSI_BHS_OPCODE_IMMEDIATE) == 0) 238009ea47eSEdward Tomasz Napierala is->is_cmdsn++; 239009ea47eSEdward Tomasz Napierala } 240009ea47eSEdward Tomasz Napierala bhssc->bhssc_expstatsn = htonl(is->is_statsn + 1); 241009ea47eSEdward Tomasz Napierala 242009ea47eSEdward Tomasz Napierala return (false); 243009ea47eSEdward Tomasz Napierala } 244009ea47eSEdward Tomasz Napierala 245009ea47eSEdward Tomasz Napierala static void 246009ea47eSEdward Tomasz Napierala iscsi_session_send_postponed(struct iscsi_session *is) 247009ea47eSEdward Tomasz Napierala { 248009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 249009ea47eSEdward Tomasz Napierala bool postpone; 250009ea47eSEdward Tomasz Napierala 251009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 252009ea47eSEdward Tomasz Napierala 2534c9ea0ceSAlexander Motin if (STAILQ_EMPTY(&is->is_postponed)) 2544c9ea0ceSAlexander Motin return; 2554c9ea0ceSAlexander Motin while ((request = STAILQ_FIRST(&is->is_postponed)) != NULL) { 256009ea47eSEdward Tomasz Napierala postpone = iscsi_pdu_prepare(request); 257009ea47eSEdward Tomasz Napierala if (postpone) 2584c9ea0ceSAlexander Motin return; 25916c158a5SEdward Tomasz Napierala STAILQ_REMOVE_HEAD(&is->is_postponed, ip_next); 260009ea47eSEdward Tomasz Napierala icl_pdu_queue(request); 261009ea47eSEdward Tomasz Napierala } 2624c9ea0ceSAlexander Motin xpt_release_simq(is->is_sim, 1); 263009ea47eSEdward Tomasz Napierala } 264009ea47eSEdward Tomasz Napierala 265009ea47eSEdward Tomasz Napierala static void 266009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(struct icl_pdu *request) 267009ea47eSEdward Tomasz Napierala { 268009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 269009ea47eSEdward Tomasz Napierala bool postpone; 270009ea47eSEdward Tomasz Napierala 271009ea47eSEdward Tomasz Napierala is = PDU_SESSION(request); 272009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 273009ea47eSEdward Tomasz Napierala iscsi_session_send_postponed(is); 274009ea47eSEdward Tomasz Napierala postpone = iscsi_pdu_prepare(request); 275009ea47eSEdward Tomasz Napierala if (postpone) { 2764c9ea0ceSAlexander Motin if (STAILQ_EMPTY(&is->is_postponed)) 2774c9ea0ceSAlexander Motin xpt_freeze_simq(is->is_sim, 1); 27816c158a5SEdward Tomasz Napierala STAILQ_INSERT_TAIL(&is->is_postponed, request, ip_next); 279009ea47eSEdward Tomasz Napierala return; 280009ea47eSEdward Tomasz Napierala } 281009ea47eSEdward Tomasz Napierala icl_pdu_queue(request); 282009ea47eSEdward Tomasz Napierala } 283009ea47eSEdward Tomasz Napierala 284009ea47eSEdward Tomasz Napierala static void 285009ea47eSEdward Tomasz Napierala iscsi_pdu_queue(struct icl_pdu *request) 286009ea47eSEdward Tomasz Napierala { 287009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 288009ea47eSEdward Tomasz Napierala 289009ea47eSEdward Tomasz Napierala is = PDU_SESSION(request); 290009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 291009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(request); 292009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 293009ea47eSEdward Tomasz Napierala } 294009ea47eSEdward Tomasz Napierala 295009ea47eSEdward Tomasz Napierala static void 296009ea47eSEdward Tomasz Napierala iscsi_session_logout(struct iscsi_session *is) 297009ea47eSEdward Tomasz Napierala { 298009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 299009ea47eSEdward Tomasz Napierala struct iscsi_bhs_logout_request *bhslr; 300009ea47eSEdward Tomasz Napierala 301d2d52b00SEdward Tomasz Napierala request = icl_pdu_new(is->is_conn, M_NOWAIT); 302009ea47eSEdward Tomasz Napierala if (request == NULL) 303009ea47eSEdward Tomasz Napierala return; 304009ea47eSEdward Tomasz Napierala 305009ea47eSEdward Tomasz Napierala bhslr = (struct iscsi_bhs_logout_request *)request->ip_bhs; 306009ea47eSEdward Tomasz Napierala bhslr->bhslr_opcode = ISCSI_BHS_OPCODE_LOGOUT_REQUEST; 307009ea47eSEdward Tomasz Napierala bhslr->bhslr_reason = BHSLR_REASON_CLOSE_SESSION; 308009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(request); 309009ea47eSEdward Tomasz Napierala } 310009ea47eSEdward Tomasz Napierala 311009ea47eSEdward Tomasz Napierala static void 312aa75114cSAlexander Motin iscsi_session_terminate_task(struct iscsi_session *is, 313ad10496cSAndriy Gapon struct iscsi_outstanding *io, cam_status status) 314aa75114cSAlexander Motin { 315aa75114cSAlexander Motin 316e204e2cdSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 317e204e2cdSEdward Tomasz Napierala 318aa75114cSAlexander Motin if (io->io_ccb != NULL) { 319aa75114cSAlexander Motin io->io_ccb->ccb_h.status &= ~(CAM_SIM_QUEUED | CAM_STATUS_MASK); 320ad10496cSAndriy Gapon io->io_ccb->ccb_h.status |= status; 321aa75114cSAlexander Motin if ((io->io_ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 322aa75114cSAlexander Motin io->io_ccb->ccb_h.status |= CAM_DEV_QFRZN; 323aa75114cSAlexander Motin xpt_freeze_devq(io->io_ccb->ccb_h.path, 1); 324aa75114cSAlexander Motin ISCSI_SESSION_DEBUG(is, "freezing devq"); 325aa75114cSAlexander Motin } 326aa75114cSAlexander Motin xpt_done(io->io_ccb); 327aa75114cSAlexander Motin } 328aa75114cSAlexander Motin iscsi_outstanding_remove(is, io); 329aa75114cSAlexander Motin } 330aa75114cSAlexander Motin 331aa75114cSAlexander Motin static void 332ad10496cSAndriy Gapon iscsi_session_terminate_tasks(struct iscsi_session *is, cam_status status) 333009ea47eSEdward Tomasz Napierala { 334009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io, *tmp; 335009ea47eSEdward Tomasz Napierala 336009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 337009ea47eSEdward Tomasz Napierala 338009ea47eSEdward Tomasz Napierala TAILQ_FOREACH_SAFE(io, &is->is_outstanding, io_next, tmp) { 339ad10496cSAndriy Gapon iscsi_session_terminate_task(is, io, status); 340009ea47eSEdward Tomasz Napierala } 341009ea47eSEdward Tomasz Napierala } 342009ea47eSEdward Tomasz Napierala 343009ea47eSEdward Tomasz Napierala static void 344f1f12e40SEdward Tomasz Napierala iscsi_session_cleanup(struct iscsi_session *is, bool destroy_sim) 345009ea47eSEdward Tomasz Napierala { 346009ea47eSEdward Tomasz Napierala struct icl_pdu *pdu; 347009ea47eSEdward Tomasz Napierala 348f1f12e40SEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 349009ea47eSEdward Tomasz Napierala 350009ea47eSEdward Tomasz Napierala /* 351009ea47eSEdward Tomasz Napierala * Don't queue any new PDUs. 352009ea47eSEdward Tomasz Napierala */ 353009ea47eSEdward Tomasz Napierala if (is->is_sim != NULL && is->is_simq_frozen == false) { 354009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing"); 355009ea47eSEdward Tomasz Napierala xpt_freeze_simq(is->is_sim, 1); 356009ea47eSEdward Tomasz Napierala is->is_simq_frozen = true; 357009ea47eSEdward Tomasz Napierala } 358009ea47eSEdward Tomasz Napierala 359009ea47eSEdward Tomasz Napierala /* 360009ea47eSEdward Tomasz Napierala * Remove postponed PDUs. 361009ea47eSEdward Tomasz Napierala */ 3624c9ea0ceSAlexander Motin if (!STAILQ_EMPTY(&is->is_postponed)) 3634c9ea0ceSAlexander Motin xpt_release_simq(is->is_sim, 1); 3644c9ea0ceSAlexander Motin while ((pdu = STAILQ_FIRST(&is->is_postponed)) != NULL) { 36516c158a5SEdward Tomasz Napierala STAILQ_REMOVE_HEAD(&is->is_postponed, ip_next); 366009ea47eSEdward Tomasz Napierala icl_pdu_free(pdu); 367009ea47eSEdward Tomasz Napierala } 368009ea47eSEdward Tomasz Napierala 369f1f12e40SEdward Tomasz Napierala if (destroy_sim == false) { 370009ea47eSEdward Tomasz Napierala /* 371009ea47eSEdward Tomasz Napierala * Terminate SCSI tasks, asking CAM to requeue them. 372009ea47eSEdward Tomasz Napierala */ 373ad10496cSAndriy Gapon iscsi_session_terminate_tasks(is, CAM_REQUEUE_REQ); 374f1f12e40SEdward Tomasz Napierala return; 375f1f12e40SEdward Tomasz Napierala } 376f1f12e40SEdward Tomasz Napierala 377ad10496cSAndriy Gapon iscsi_session_terminate_tasks(is, CAM_DEV_NOT_THERE); 378f1f12e40SEdward Tomasz Napierala 379f1f12e40SEdward Tomasz Napierala if (is->is_sim == NULL) 380f1f12e40SEdward Tomasz Napierala return; 381f1f12e40SEdward Tomasz Napierala 382f1f12e40SEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "deregistering SIM"); 383f1f12e40SEdward Tomasz Napierala xpt_async(AC_LOST_DEVICE, is->is_path, NULL); 384f1f12e40SEdward Tomasz Napierala 385f1f12e40SEdward Tomasz Napierala if (is->is_simq_frozen) { 386f1f12e40SEdward Tomasz Napierala is->is_simq_frozen = false; 387186bcdaaSEdward Tomasz Napierala xpt_release_simq(is->is_sim, 1); 388f1f12e40SEdward Tomasz Napierala } 389f1f12e40SEdward Tomasz Napierala 390f1f12e40SEdward Tomasz Napierala xpt_free_path(is->is_path); 391f1f12e40SEdward Tomasz Napierala is->is_path = NULL; 392f1f12e40SEdward Tomasz Napierala xpt_bus_deregister(cam_sim_path(is->is_sim)); 393f1f12e40SEdward Tomasz Napierala cam_sim_free(is->is_sim, TRUE /*free_devq*/); 394f1f12e40SEdward Tomasz Napierala is->is_sim = NULL; 395f1f12e40SEdward Tomasz Napierala is->is_devq = NULL; 396f1f12e40SEdward Tomasz Napierala } 397f1f12e40SEdward Tomasz Napierala 398f1f12e40SEdward Tomasz Napierala static void 399f1f12e40SEdward Tomasz Napierala iscsi_maintenance_thread_reconnect(struct iscsi_session *is) 400f1f12e40SEdward Tomasz Napierala { 401bd6bb493SRichard Scheffenegger /* 402bd6bb493SRichard Scheffenegger * As we will be reconnecting shortly, 403bd6bb493SRichard Scheffenegger * discard outstanding data immediately on 404bd6bb493SRichard Scheffenegger * close(), also notify peer via RST if 405bd6bb493SRichard Scheffenegger * any packets come in. 406bd6bb493SRichard Scheffenegger */ 407bd6bb493SRichard Scheffenegger struct socket *so; 408bd6bb493SRichard Scheffenegger so = is->is_conn->ic_socket; 409bd6bb493SRichard Scheffenegger if (so != NULL) { 410bd6bb493SRichard Scheffenegger struct sockopt sopt; 411bd6bb493SRichard Scheffenegger struct linger sl; 412bd6bb493SRichard Scheffenegger sopt.sopt_dir = SOPT_SET; 413bd6bb493SRichard Scheffenegger sopt.sopt_level = SOL_SOCKET; 414bd6bb493SRichard Scheffenegger sopt.sopt_name = SO_LINGER; 415bd6bb493SRichard Scheffenegger sopt.sopt_val = &sl; 416bd6bb493SRichard Scheffenegger sopt.sopt_valsize = sizeof(sl); 417bd6bb493SRichard Scheffenegger sl.l_onoff = 1; /* non-zero value enables linger option in kernel */ 418bd6bb493SRichard Scheffenegger sl.l_linger = 0; /* timeout interval in seconds */ 419bd6bb493SRichard Scheffenegger sosetopt(is->is_conn->ic_socket, &sopt); 420bd6bb493SRichard Scheffenegger } 421f1f12e40SEdward Tomasz Napierala 422f1f12e40SEdward Tomasz Napierala icl_conn_close(is->is_conn); 423f1f12e40SEdward Tomasz Napierala 424f1f12e40SEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 425f1f12e40SEdward Tomasz Napierala 426f1f12e40SEdward Tomasz Napierala is->is_connected = false; 427f1f12e40SEdward Tomasz Napierala is->is_reconnecting = false; 428f1f12e40SEdward Tomasz Napierala is->is_login_phase = false; 429f1f12e40SEdward Tomasz Napierala 430f1f12e40SEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 431f1f12e40SEdward Tomasz Napierala if (is->is_login_pdu != NULL) { 432f1f12e40SEdward Tomasz Napierala icl_pdu_free(is->is_login_pdu); 433f1f12e40SEdward Tomasz Napierala is->is_login_pdu = NULL; 434f1f12e40SEdward Tomasz Napierala } 435f1f12e40SEdward Tomasz Napierala cv_signal(&is->is_login_cv); 436f1f12e40SEdward Tomasz Napierala #endif 437f1f12e40SEdward Tomasz Napierala 438f1f12e40SEdward Tomasz Napierala if (fail_on_disconnection) { 439f1f12e40SEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "connection failed, destroying devices"); 440f1f12e40SEdward Tomasz Napierala iscsi_session_cleanup(is, true); 441f1f12e40SEdward Tomasz Napierala } else { 442f1f12e40SEdward Tomasz Napierala iscsi_session_cleanup(is, false); 443f1f12e40SEdward Tomasz Napierala } 444009ea47eSEdward Tomasz Napierala 445009ea47eSEdward Tomasz Napierala KASSERT(TAILQ_EMPTY(&is->is_outstanding), 446009ea47eSEdward Tomasz Napierala ("destroying session with active tasks")); 44716c158a5SEdward Tomasz Napierala KASSERT(STAILQ_EMPTY(&is->is_postponed), 448009ea47eSEdward Tomasz Napierala ("destroying session with postponed PDUs")); 449009ea47eSEdward Tomasz Napierala 450ba165a31SEdward Tomasz Napierala if (is->is_conf.isc_enable == 0 && is->is_conf.isc_discovery == 0) { 451ba165a31SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 452ba165a31SEdward Tomasz Napierala return; 453ba165a31SEdward Tomasz Napierala } 454ba165a31SEdward Tomasz Napierala 455009ea47eSEdward Tomasz Napierala /* 456009ea47eSEdward Tomasz Napierala * Request immediate reconnection from iscsid(8). 457009ea47eSEdward Tomasz Napierala */ 458009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "waking up iscsid(8)"); 459009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = true; 460009ea47eSEdward Tomasz Napierala strlcpy(is->is_reason, "Waiting for iscsid(8)", sizeof(is->is_reason)); 461009ea47eSEdward Tomasz Napierala is->is_timeout = 0; 462009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 463009ea47eSEdward Tomasz Napierala cv_signal(&is->is_softc->sc_cv); 464009ea47eSEdward Tomasz Napierala } 465009ea47eSEdward Tomasz Napierala 466009ea47eSEdward Tomasz Napierala static void 467009ea47eSEdward Tomasz Napierala iscsi_maintenance_thread_terminate(struct iscsi_session *is) 468009ea47eSEdward Tomasz Napierala { 469009ea47eSEdward Tomasz Napierala struct iscsi_softc *sc; 470009ea47eSEdward Tomasz Napierala 471009ea47eSEdward Tomasz Napierala sc = is->is_softc; 472009ea47eSEdward Tomasz Napierala sx_xlock(&sc->sc_lock); 47320e9cab5SAndriy Gapon TAILQ_REMOVE(&sc->sc_sessions, is, is_next); 47420e9cab5SAndriy Gapon sx_xunlock(&sc->sc_lock); 475009ea47eSEdward Tomasz Napierala 476009ea47eSEdward Tomasz Napierala icl_conn_close(is->is_conn); 477674074daSEdward Tomasz Napierala callout_drain(&is->is_callout); 478009ea47eSEdward Tomasz Napierala 479009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 480009ea47eSEdward Tomasz Napierala 481009ea47eSEdward Tomasz Napierala KASSERT(is->is_terminating, ("is_terminating == false")); 482009ea47eSEdward Tomasz Napierala 483009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 484009ea47eSEdward Tomasz Napierala if (is->is_login_pdu != NULL) { 485009ea47eSEdward Tomasz Napierala icl_pdu_free(is->is_login_pdu); 486009ea47eSEdward Tomasz Napierala is->is_login_pdu = NULL; 487009ea47eSEdward Tomasz Napierala } 488009ea47eSEdward Tomasz Napierala cv_signal(&is->is_login_cv); 489009ea47eSEdward Tomasz Napierala #endif 490009ea47eSEdward Tomasz Napierala 491f1f12e40SEdward Tomasz Napierala iscsi_session_cleanup(is, true); 492009ea47eSEdward Tomasz Napierala 493009ea47eSEdward Tomasz Napierala KASSERT(TAILQ_EMPTY(&is->is_outstanding), 494009ea47eSEdward Tomasz Napierala ("destroying session with active tasks")); 49516c158a5SEdward Tomasz Napierala KASSERT(STAILQ_EMPTY(&is->is_postponed), 496009ea47eSEdward Tomasz Napierala ("destroying session with postponed PDUs")); 497009ea47eSEdward Tomasz Napierala 498009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 499009ea47eSEdward Tomasz Napierala 500009ea47eSEdward Tomasz Napierala icl_conn_free(is->is_conn); 501009ea47eSEdward Tomasz Napierala mtx_destroy(&is->is_lock); 502009ea47eSEdward Tomasz Napierala cv_destroy(&is->is_maintenance_cv); 503009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 504009ea47eSEdward Tomasz Napierala cv_destroy(&is->is_login_cv); 505009ea47eSEdward Tomasz Napierala #endif 506481b36c6SSteven Hartland 507009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "terminated"); 508009ea47eSEdward Tomasz Napierala free(is, M_ISCSI); 509009ea47eSEdward Tomasz Napierala 510009ea47eSEdward Tomasz Napierala /* 511009ea47eSEdward Tomasz Napierala * The iscsi_unload() routine might be waiting. 512009ea47eSEdward Tomasz Napierala */ 513009ea47eSEdward Tomasz Napierala cv_signal(&sc->sc_cv); 514009ea47eSEdward Tomasz Napierala } 515009ea47eSEdward Tomasz Napierala 516009ea47eSEdward Tomasz Napierala static void 517009ea47eSEdward Tomasz Napierala iscsi_maintenance_thread(void *arg) 518009ea47eSEdward Tomasz Napierala { 5195b338bc0SAlexander Motin struct iscsi_session *is = arg; 520009ea47eSEdward Tomasz Napierala 521009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 5225b338bc0SAlexander Motin for (;;) { 523009ea47eSEdward Tomasz Napierala if (is->is_reconnecting == false && 524009ea47eSEdward Tomasz Napierala is->is_terminating == false && 5255b338bc0SAlexander Motin (STAILQ_EMPTY(&is->is_postponed) || 5265b338bc0SAlexander Motin ISCSI_SNGT(is->is_cmdsn, is->is_maxcmdsn))) 527009ea47eSEdward Tomasz Napierala cv_wait(&is->is_maintenance_cv, &is->is_lock); 528009ea47eSEdward Tomasz Napierala 529481b36c6SSteven Hartland /* Terminate supersedes reconnect. */ 530009ea47eSEdward Tomasz Napierala if (is->is_terminating) { 531009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 532009ea47eSEdward Tomasz Napierala iscsi_maintenance_thread_terminate(is); 533009ea47eSEdward Tomasz Napierala kthread_exit(); 534009ea47eSEdward Tomasz Napierala return; 535009ea47eSEdward Tomasz Napierala } 536009ea47eSEdward Tomasz Napierala 537481b36c6SSteven Hartland if (is->is_reconnecting) { 538481b36c6SSteven Hartland ISCSI_SESSION_UNLOCK(is); 539481b36c6SSteven Hartland iscsi_maintenance_thread_reconnect(is); 5405b338bc0SAlexander Motin ISCSI_SESSION_LOCK(is); 541481b36c6SSteven Hartland continue; 542481b36c6SSteven Hartland } 543481b36c6SSteven Hartland 544009ea47eSEdward Tomasz Napierala iscsi_session_send_postponed(is); 545009ea47eSEdward Tomasz Napierala } 5465b338bc0SAlexander Motin ISCSI_SESSION_UNLOCK(is); 547009ea47eSEdward Tomasz Napierala } 548009ea47eSEdward Tomasz Napierala 549009ea47eSEdward Tomasz Napierala static void 550009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(struct iscsi_session *is) 551009ea47eSEdward Tomasz Napierala { 552009ea47eSEdward Tomasz Napierala 553009ea47eSEdward Tomasz Napierala /* 554009ea47eSEdward Tomasz Napierala * XXX: We can't use locking here, because 555009ea47eSEdward Tomasz Napierala * it's being called from various contexts. 556009ea47eSEdward Tomasz Napierala * Hope it doesn't break anything. 557009ea47eSEdward Tomasz Napierala */ 558009ea47eSEdward Tomasz Napierala if (is->is_reconnecting) 559009ea47eSEdward Tomasz Napierala return; 560009ea47eSEdward Tomasz Napierala 561009ea47eSEdward Tomasz Napierala is->is_reconnecting = true; 562009ea47eSEdward Tomasz Napierala cv_signal(&is->is_maintenance_cv); 563009ea47eSEdward Tomasz Napierala } 564009ea47eSEdward Tomasz Napierala 565009ea47eSEdward Tomasz Napierala static void 566009ea47eSEdward Tomasz Napierala iscsi_session_terminate(struct iscsi_session *is) 567009ea47eSEdward Tomasz Napierala { 568674074daSEdward Tomasz Napierala 569009ea47eSEdward Tomasz Napierala if (is->is_terminating) 570009ea47eSEdward Tomasz Napierala return; 571009ea47eSEdward Tomasz Napierala 572009ea47eSEdward Tomasz Napierala is->is_terminating = true; 573009ea47eSEdward Tomasz Napierala 574009ea47eSEdward Tomasz Napierala #if 0 575009ea47eSEdward Tomasz Napierala iscsi_session_logout(is); 576009ea47eSEdward Tomasz Napierala #endif 577009ea47eSEdward Tomasz Napierala cv_signal(&is->is_maintenance_cv); 578009ea47eSEdward Tomasz Napierala } 579009ea47eSEdward Tomasz Napierala 580009ea47eSEdward Tomasz Napierala static void 581009ea47eSEdward Tomasz Napierala iscsi_callout(void *context) 582009ea47eSEdward Tomasz Napierala { 583009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 584009ea47eSEdward Tomasz Napierala struct iscsi_bhs_nop_out *bhsno; 585009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 586009ea47eSEdward Tomasz Napierala bool reconnect_needed = false; 587972a7d95SRichard Scheffenegger sbintime_t sbt, pr; 588009ea47eSEdward Tomasz Napierala 589009ea47eSEdward Tomasz Napierala is = context; 590009ea47eSEdward Tomasz Napierala 591674074daSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 592674074daSEdward Tomasz Napierala if (is->is_terminating) { 593674074daSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 594009ea47eSEdward Tomasz Napierala return; 595674074daSEdward Tomasz Napierala } 596009ea47eSEdward Tomasz Napierala 597972a7d95SRichard Scheffenegger sbt = mstosbt(995); 598972a7d95SRichard Scheffenegger pr = mstosbt(10); 599972a7d95SRichard Scheffenegger callout_schedule_sbt(&is->is_callout, sbt, pr, 0); 600009ea47eSEdward Tomasz Napierala 601ba165a31SEdward Tomasz Napierala if (is->is_conf.isc_enable == 0) 602ba165a31SEdward Tomasz Napierala goto out; 603ba165a31SEdward Tomasz Napierala 604009ea47eSEdward Tomasz Napierala is->is_timeout++; 605009ea47eSEdward Tomasz Napierala 606009ea47eSEdward Tomasz Napierala if (is->is_waiting_for_iscsid) { 6072c5b89e5SEdward Tomasz Napierala if (iscsid_timeout > 0 && is->is_timeout > iscsid_timeout) { 608009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "timed out waiting for iscsid(8) " 609009ea47eSEdward Tomasz Napierala "for %d seconds; reconnecting", 610009ea47eSEdward Tomasz Napierala is->is_timeout); 611009ea47eSEdward Tomasz Napierala reconnect_needed = true; 612009ea47eSEdward Tomasz Napierala } 613009ea47eSEdward Tomasz Napierala goto out; 614009ea47eSEdward Tomasz Napierala } 615009ea47eSEdward Tomasz Napierala 616009ea47eSEdward Tomasz Napierala if (is->is_login_phase) { 617bd6bb493SRichard Scheffenegger if (is->is_login_timeout > 0 && is->is_timeout > is->is_login_timeout) { 618009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "login timed out after %d seconds; " 619009ea47eSEdward Tomasz Napierala "reconnecting", is->is_timeout); 620009ea47eSEdward Tomasz Napierala reconnect_needed = true; 621009ea47eSEdward Tomasz Napierala } 622009ea47eSEdward Tomasz Napierala goto out; 623009ea47eSEdward Tomasz Napierala } 624009ea47eSEdward Tomasz Napierala 625bd6bb493SRichard Scheffenegger if (is->is_ping_timeout <= 0) { 6262c5b89e5SEdward Tomasz Napierala /* 6272c5b89e5SEdward Tomasz Napierala * Pings are disabled. Don't send NOP-Out in this case. 6282c5b89e5SEdward Tomasz Napierala * Reset the timeout, to avoid triggering reconnection, 6292c5b89e5SEdward Tomasz Napierala * should the user decide to reenable them. 6302c5b89e5SEdward Tomasz Napierala */ 6312c5b89e5SEdward Tomasz Napierala is->is_timeout = 0; 6322c5b89e5SEdward Tomasz Napierala goto out; 6332c5b89e5SEdward Tomasz Napierala } 6342c5b89e5SEdward Tomasz Napierala 635bd6bb493SRichard Scheffenegger if (is->is_timeout >= is->is_ping_timeout) { 636009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "no ping reply (NOP-In) after %d seconds; " 637bd6bb493SRichard Scheffenegger "reconnecting", is->is_ping_timeout); 638009ea47eSEdward Tomasz Napierala reconnect_needed = true; 639009ea47eSEdward Tomasz Napierala goto out; 640009ea47eSEdward Tomasz Napierala } 641009ea47eSEdward Tomasz Napierala 642009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 643009ea47eSEdward Tomasz Napierala 644009ea47eSEdward Tomasz Napierala /* 645009ea47eSEdward Tomasz Napierala * If the ping was reset less than one second ago - which means 646009ea47eSEdward Tomasz Napierala * that we've received some PDU during the last second - assume 647009ea47eSEdward Tomasz Napierala * the traffic flows correctly and don't bother sending a NOP-Out. 648009ea47eSEdward Tomasz Napierala * 649009ea47eSEdward Tomasz Napierala * (It's 2 - one for one second, and one for incrementing is_timeout 650009ea47eSEdward Tomasz Napierala * earlier in this routine.) 651009ea47eSEdward Tomasz Napierala */ 652009ea47eSEdward Tomasz Napierala if (is->is_timeout < 2) 653009ea47eSEdward Tomasz Napierala return; 654009ea47eSEdward Tomasz Napierala 655d2d52b00SEdward Tomasz Napierala request = icl_pdu_new(is->is_conn, M_NOWAIT); 65646aaea89SEdward Tomasz Napierala if (request == NULL) { 65746aaea89SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate PDU"); 65846aaea89SEdward Tomasz Napierala return; 65946aaea89SEdward Tomasz Napierala } 660009ea47eSEdward Tomasz Napierala bhsno = (struct iscsi_bhs_nop_out *)request->ip_bhs; 661009ea47eSEdward Tomasz Napierala bhsno->bhsno_opcode = ISCSI_BHS_OPCODE_NOP_OUT | 662009ea47eSEdward Tomasz Napierala ISCSI_BHS_OPCODE_IMMEDIATE; 663009ea47eSEdward Tomasz Napierala bhsno->bhsno_flags = 0x80; 664009ea47eSEdward Tomasz Napierala bhsno->bhsno_target_transfer_tag = 0xffffffff; 665009ea47eSEdward Tomasz Napierala iscsi_pdu_queue(request); 666009ea47eSEdward Tomasz Napierala return; 667009ea47eSEdward Tomasz Napierala 668009ea47eSEdward Tomasz Napierala out: 669481b36c6SSteven Hartland if (is->is_terminating) { 670481b36c6SSteven Hartland ISCSI_SESSION_UNLOCK(is); 671481b36c6SSteven Hartland return; 672481b36c6SSteven Hartland } 673481b36c6SSteven Hartland 674009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 675009ea47eSEdward Tomasz Napierala 676009ea47eSEdward Tomasz Napierala if (reconnect_needed) 677009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 678009ea47eSEdward Tomasz Napierala } 679009ea47eSEdward Tomasz Napierala 680009ea47eSEdward Tomasz Napierala static void 681009ea47eSEdward Tomasz Napierala iscsi_pdu_update_statsn(const struct icl_pdu *response) 682009ea47eSEdward Tomasz Napierala { 683009ea47eSEdward Tomasz Napierala const struct iscsi_bhs_data_in *bhsdi; 684009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 6852124e3b0SAlexander Motin uint32_t expcmdsn, maxcmdsn, statsn; 686009ea47eSEdward Tomasz Napierala 687009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 688009ea47eSEdward Tomasz Napierala 689009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 690009ea47eSEdward Tomasz Napierala 691009ea47eSEdward Tomasz Napierala /* 692009ea47eSEdward Tomasz Napierala * We're only using fields common for all the response 693009ea47eSEdward Tomasz Napierala * (target -> initiator) PDUs. 694009ea47eSEdward Tomasz Napierala */ 695009ea47eSEdward Tomasz Napierala bhsdi = (const struct iscsi_bhs_data_in *)response->ip_bhs; 696009ea47eSEdward Tomasz Napierala /* 697009ea47eSEdward Tomasz Napierala * Ok, I lied. In case of Data-In, "The fields StatSN, Status, 698009ea47eSEdward Tomasz Napierala * and Residual Count only have meaningful content if the S bit 699009ea47eSEdward Tomasz Napierala * is set to 1", so we also need to check the bit specific for 700009ea47eSEdward Tomasz Napierala * Data-In PDU. 701009ea47eSEdward Tomasz Napierala */ 702009ea47eSEdward Tomasz Napierala if (bhsdi->bhsdi_opcode != ISCSI_BHS_OPCODE_SCSI_DATA_IN || 703009ea47eSEdward Tomasz Napierala (bhsdi->bhsdi_flags & BHSDI_FLAGS_S) != 0) { 7042124e3b0SAlexander Motin statsn = ntohl(bhsdi->bhsdi_statsn); 7052124e3b0SAlexander Motin if (statsn != is->is_statsn && statsn != (is->is_statsn + 1)) { 7062124e3b0SAlexander Motin /* XXX: This is normal situation for MCS */ 7072124e3b0SAlexander Motin ISCSI_SESSION_WARN(is, "PDU 0x%x StatSN %u != " 7082124e3b0SAlexander Motin "session ExpStatSN %u (or + 1); reconnecting", 7092124e3b0SAlexander Motin bhsdi->bhsdi_opcode, statsn, is->is_statsn); 7102124e3b0SAlexander Motin iscsi_session_reconnect(is); 711009ea47eSEdward Tomasz Napierala } 7122124e3b0SAlexander Motin if (ISCSI_SNGT(statsn, is->is_statsn)) 7132124e3b0SAlexander Motin is->is_statsn = statsn; 714009ea47eSEdward Tomasz Napierala } 715009ea47eSEdward Tomasz Napierala 716009ea47eSEdward Tomasz Napierala expcmdsn = ntohl(bhsdi->bhsdi_expcmdsn); 717009ea47eSEdward Tomasz Napierala maxcmdsn = ntohl(bhsdi->bhsdi_maxcmdsn); 718009ea47eSEdward Tomasz Napierala 7192124e3b0SAlexander Motin if (ISCSI_SNLT(maxcmdsn + 1, expcmdsn)) { 7202124e3b0SAlexander Motin ISCSI_SESSION_DEBUG(is, 7212124e3b0SAlexander Motin "PDU MaxCmdSN %u + 1 < PDU ExpCmdSN %u; ignoring", 722009ea47eSEdward Tomasz Napierala maxcmdsn, expcmdsn); 723009ea47eSEdward Tomasz Napierala } else { 7242124e3b0SAlexander Motin if (ISCSI_SNGT(maxcmdsn, is->is_maxcmdsn)) { 725009ea47eSEdward Tomasz Napierala is->is_maxcmdsn = maxcmdsn; 726009ea47eSEdward Tomasz Napierala 727009ea47eSEdward Tomasz Napierala /* 728009ea47eSEdward Tomasz Napierala * Command window increased; kick the maintanance thread 729009ea47eSEdward Tomasz Napierala * to send out postponed commands. 730009ea47eSEdward Tomasz Napierala */ 73116c158a5SEdward Tomasz Napierala if (!STAILQ_EMPTY(&is->is_postponed)) 732009ea47eSEdward Tomasz Napierala cv_signal(&is->is_maintenance_cv); 7332124e3b0SAlexander Motin } else if (ISCSI_SNLT(maxcmdsn, is->is_maxcmdsn)) { 7342124e3b0SAlexander Motin /* XXX: This is normal situation for MCS */ 7352124e3b0SAlexander Motin ISCSI_SESSION_DEBUG(is, 7362124e3b0SAlexander Motin "PDU MaxCmdSN %u < session MaxCmdSN %u; ignoring", 737009ea47eSEdward Tomasz Napierala maxcmdsn, is->is_maxcmdsn); 738009ea47eSEdward Tomasz Napierala } 739009ea47eSEdward Tomasz Napierala 7402124e3b0SAlexander Motin if (ISCSI_SNGT(expcmdsn, is->is_expcmdsn)) { 741009ea47eSEdward Tomasz Napierala is->is_expcmdsn = expcmdsn; 7422124e3b0SAlexander Motin } else if (ISCSI_SNLT(expcmdsn, is->is_expcmdsn)) { 7432124e3b0SAlexander Motin /* XXX: This is normal situation for MCS */ 7442124e3b0SAlexander Motin ISCSI_SESSION_DEBUG(is, 7452124e3b0SAlexander Motin "PDU ExpCmdSN %u < session ExpCmdSN %u; ignoring", 746009ea47eSEdward Tomasz Napierala expcmdsn, is->is_expcmdsn); 747009ea47eSEdward Tomasz Napierala } 748009ea47eSEdward Tomasz Napierala } 749009ea47eSEdward Tomasz Napierala 750009ea47eSEdward Tomasz Napierala /* 751009ea47eSEdward Tomasz Napierala * Every incoming PDU - not just NOP-In - resets the ping timer. 752009ea47eSEdward Tomasz Napierala * The purpose of the timeout is to reset the connection when it stalls; 753009ea47eSEdward Tomasz Napierala * we don't want this to happen when NOP-In or NOP-Out ends up delayed 754009ea47eSEdward Tomasz Napierala * in some queue. 755009ea47eSEdward Tomasz Napierala */ 756009ea47eSEdward Tomasz Napierala is->is_timeout = 0; 757009ea47eSEdward Tomasz Napierala } 758009ea47eSEdward Tomasz Napierala 759009ea47eSEdward Tomasz Napierala static void 760009ea47eSEdward Tomasz Napierala iscsi_receive_callback(struct icl_pdu *response) 761009ea47eSEdward Tomasz Napierala { 762009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 763009ea47eSEdward Tomasz Napierala 764009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 765009ea47eSEdward Tomasz Napierala 766009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 767009ea47eSEdward Tomasz Napierala 768d66a906bSEdward Tomasz Napierala iscsi_pdu_update_statsn(response); 769d66a906bSEdward Tomasz Napierala 770009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 771009ea47eSEdward Tomasz Napierala if (is->is_login_phase) { 772009ea47eSEdward Tomasz Napierala if (is->is_login_pdu == NULL) 773009ea47eSEdward Tomasz Napierala is->is_login_pdu = response; 774009ea47eSEdward Tomasz Napierala else 775009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 776009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 777009ea47eSEdward Tomasz Napierala cv_signal(&is->is_login_cv); 778009ea47eSEdward Tomasz Napierala return; 779009ea47eSEdward Tomasz Napierala } 780009ea47eSEdward Tomasz Napierala #endif 781009ea47eSEdward Tomasz Napierala 782009ea47eSEdward Tomasz Napierala /* 783009ea47eSEdward Tomasz Napierala * The handling routine is responsible for freeing the PDU 784009ea47eSEdward Tomasz Napierala * when it's no longer needed. 785009ea47eSEdward Tomasz Napierala */ 786009ea47eSEdward Tomasz Napierala switch (response->ip_bhs->bhs_opcode) { 787009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_NOP_IN: 788009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_nop_in(response); 789c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 790009ea47eSEdward Tomasz Napierala break; 791009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_SCSI_RESPONSE: 792009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_scsi_response(response); 793c215ad3aSAlexander Motin /* Session lock dropped inside. */ 794c215ad3aSAlexander Motin ISCSI_SESSION_LOCK_ASSERT_NOT(is); 795009ea47eSEdward Tomasz Napierala break; 796aa75114cSAlexander Motin case ISCSI_BHS_OPCODE_TASK_RESPONSE: 797aa75114cSAlexander Motin iscsi_pdu_handle_task_response(response); 798c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 799aa75114cSAlexander Motin break; 800009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_SCSI_DATA_IN: 801009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_data_in(response); 802c215ad3aSAlexander Motin /* Session lock dropped inside. */ 803c215ad3aSAlexander Motin ISCSI_SESSION_LOCK_ASSERT_NOT(is); 804009ea47eSEdward Tomasz Napierala break; 805009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_LOGOUT_RESPONSE: 806009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_logout_response(response); 807c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 808009ea47eSEdward Tomasz Napierala break; 809009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_R2T: 810009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_r2t(response); 811c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 812009ea47eSEdward Tomasz Napierala break; 813009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_ASYNC_MESSAGE: 814009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_async_message(response); 815c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 816009ea47eSEdward Tomasz Napierala break; 817009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_REJECT: 818009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_reject(response); 819c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 820009ea47eSEdward Tomasz Napierala break; 821009ea47eSEdward Tomasz Napierala default: 822009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "received PDU with unsupported " 823009ea47eSEdward Tomasz Napierala "opcode 0x%x; reconnecting", 824009ea47eSEdward Tomasz Napierala response->ip_bhs->bhs_opcode); 825009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 826c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 827009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 828009ea47eSEdward Tomasz Napierala } 829009ea47eSEdward Tomasz Napierala } 830009ea47eSEdward Tomasz Napierala 831009ea47eSEdward Tomasz Napierala static void 832009ea47eSEdward Tomasz Napierala iscsi_error_callback(struct icl_conn *ic) 833009ea47eSEdward Tomasz Napierala { 834009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 835009ea47eSEdward Tomasz Napierala 836009ea47eSEdward Tomasz Napierala is = CONN_SESSION(ic); 837009ea47eSEdward Tomasz Napierala 838009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "connection error; reconnecting"); 839009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 840009ea47eSEdward Tomasz Napierala } 841009ea47eSEdward Tomasz Napierala 842009ea47eSEdward Tomasz Napierala static void 843009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_nop_in(struct icl_pdu *response) 844009ea47eSEdward Tomasz Napierala { 8451008ac5eSEdward Tomasz Napierala struct iscsi_session *is; 846009ea47eSEdward Tomasz Napierala struct iscsi_bhs_nop_out *bhsno; 847009ea47eSEdward Tomasz Napierala struct iscsi_bhs_nop_in *bhsni; 848009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 8491008ac5eSEdward Tomasz Napierala void *data = NULL; 8501008ac5eSEdward Tomasz Napierala size_t datasize; 8511008ac5eSEdward Tomasz Napierala int error; 852009ea47eSEdward Tomasz Napierala 8531008ac5eSEdward Tomasz Napierala is = PDU_SESSION(response); 854009ea47eSEdward Tomasz Napierala bhsni = (struct iscsi_bhs_nop_in *)response->ip_bhs; 855009ea47eSEdward Tomasz Napierala 856009ea47eSEdward Tomasz Napierala if (bhsni->bhsni_target_transfer_tag == 0xffffffff) { 857009ea47eSEdward Tomasz Napierala /* 858009ea47eSEdward Tomasz Napierala * Nothing to do; iscsi_pdu_update_statsn() already 859009ea47eSEdward Tomasz Napierala * zeroed the timeout. 860009ea47eSEdward Tomasz Napierala */ 861009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 862009ea47eSEdward Tomasz Napierala return; 863009ea47eSEdward Tomasz Napierala } 864009ea47eSEdward Tomasz Napierala 8651008ac5eSEdward Tomasz Napierala datasize = icl_pdu_data_segment_length(response); 8661008ac5eSEdward Tomasz Napierala if (datasize > 0) { 8671008ac5eSEdward Tomasz Napierala data = malloc(datasize, M_ISCSI, M_NOWAIT | M_ZERO); 8681008ac5eSEdward Tomasz Napierala if (data == NULL) { 8691008ac5eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate memory; " 8701008ac5eSEdward Tomasz Napierala "reconnecting"); 8711008ac5eSEdward Tomasz Napierala icl_pdu_free(response); 8721008ac5eSEdward Tomasz Napierala iscsi_session_reconnect(is); 8731008ac5eSEdward Tomasz Napierala return; 8741008ac5eSEdward Tomasz Napierala } 8751008ac5eSEdward Tomasz Napierala icl_pdu_get_data(response, 0, data, datasize); 8761008ac5eSEdward Tomasz Napierala } 8771008ac5eSEdward Tomasz Napierala 878d2d52b00SEdward Tomasz Napierala request = icl_pdu_new(response->ip_conn, M_NOWAIT); 879009ea47eSEdward Tomasz Napierala if (request == NULL) { 8801008ac5eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate memory; " 8811008ac5eSEdward Tomasz Napierala "reconnecting"); 8821008ac5eSEdward Tomasz Napierala free(data, M_ISCSI); 883009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 8841008ac5eSEdward Tomasz Napierala iscsi_session_reconnect(is); 885009ea47eSEdward Tomasz Napierala return; 886009ea47eSEdward Tomasz Napierala } 887009ea47eSEdward Tomasz Napierala bhsno = (struct iscsi_bhs_nop_out *)request->ip_bhs; 888009ea47eSEdward Tomasz Napierala bhsno->bhsno_opcode = ISCSI_BHS_OPCODE_NOP_OUT | 889009ea47eSEdward Tomasz Napierala ISCSI_BHS_OPCODE_IMMEDIATE; 890009ea47eSEdward Tomasz Napierala bhsno->bhsno_flags = 0x80; 8911008ac5eSEdward Tomasz Napierala bhsno->bhsno_initiator_task_tag = 0xffffffff; 892009ea47eSEdward Tomasz Napierala bhsno->bhsno_target_transfer_tag = bhsni->bhsni_target_transfer_tag; 8931008ac5eSEdward Tomasz Napierala if (datasize > 0) { 8941008ac5eSEdward Tomasz Napierala error = icl_pdu_append_data(request, data, datasize, M_NOWAIT); 8951008ac5eSEdward Tomasz Napierala if (error != 0) { 8961008ac5eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate memory; " 8971008ac5eSEdward Tomasz Napierala "reconnecting"); 8981008ac5eSEdward Tomasz Napierala free(data, M_ISCSI); 8991008ac5eSEdward Tomasz Napierala icl_pdu_free(request); 9001008ac5eSEdward Tomasz Napierala icl_pdu_free(response); 9011008ac5eSEdward Tomasz Napierala iscsi_session_reconnect(is); 9021008ac5eSEdward Tomasz Napierala return; 9031008ac5eSEdward Tomasz Napierala } 9041008ac5eSEdward Tomasz Napierala free(data, M_ISCSI); 9051008ac5eSEdward Tomasz Napierala } 906009ea47eSEdward Tomasz Napierala 907009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 908009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(request); 909009ea47eSEdward Tomasz Napierala } 910009ea47eSEdward Tomasz Napierala 911009ea47eSEdward Tomasz Napierala static void 912009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_scsi_response(struct icl_pdu *response) 913009ea47eSEdward Tomasz Napierala { 914009ea47eSEdward Tomasz Napierala struct iscsi_bhs_scsi_response *bhssr; 915009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io; 916009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 91773e2e95dSAlexander Motin union ccb *ccb; 918009ea47eSEdward Tomasz Napierala struct ccb_scsiio *csio; 91973e2e95dSAlexander Motin size_t data_segment_len, received; 920009ea47eSEdward Tomasz Napierala uint16_t sense_len; 921bcec64bcSEdward Tomasz Napierala uint32_t resid; 922009ea47eSEdward Tomasz Napierala 923009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 924009ea47eSEdward Tomasz Napierala 925009ea47eSEdward Tomasz Napierala bhssr = (struct iscsi_bhs_scsi_response *)response->ip_bhs; 926009ea47eSEdward Tomasz Napierala io = iscsi_outstanding_find(is, bhssr->bhssr_initiator_task_tag); 927aa75114cSAlexander Motin if (io == NULL || io->io_ccb == NULL) { 928009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "bad itt 0x%x", bhssr->bhssr_initiator_task_tag); 929009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 930009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 931c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 932009ea47eSEdward Tomasz Napierala return; 933009ea47eSEdward Tomasz Napierala } 934009ea47eSEdward Tomasz Napierala 93573e2e95dSAlexander Motin ccb = io->io_ccb; 936cdbc4a07SJohn Baldwin if (bhssr->bhssr_response == BHSSR_RESPONSE_COMMAND_COMPLETED) { 9374f0f5bf9SJohn Baldwin if (ntohl(bhssr->bhssr_expdatasn) != io->io_datasn) { 9384f0f5bf9SJohn Baldwin ISCSI_SESSION_WARN(is, 9394f0f5bf9SJohn Baldwin "ExpDataSN mismatch in SCSI Response (%u vs %u)", 9404f0f5bf9SJohn Baldwin ntohl(bhssr->bhssr_expdatasn), io->io_datasn); 941cdbc4a07SJohn Baldwin 942cdbc4a07SJohn Baldwin /* 943cdbc4a07SJohn Baldwin * XXX: Permit an ExpDataSN of zero for errors. 944cdbc4a07SJohn Baldwin * 945cdbc4a07SJohn Baldwin * This doesn't conform to RFC 7143, but some 946cdbc4a07SJohn Baldwin * targets seem to do this. 947cdbc4a07SJohn Baldwin */ 948cdbc4a07SJohn Baldwin if (bhssr->bhssr_status != 0 && 949cdbc4a07SJohn Baldwin bhssr->bhssr_expdatasn == htonl(0)) 950cdbc4a07SJohn Baldwin goto skip_expdatasn; 951cdbc4a07SJohn Baldwin 9524f0f5bf9SJohn Baldwin icl_pdu_free(response); 9534f0f5bf9SJohn Baldwin iscsi_session_reconnect(is); 9544f0f5bf9SJohn Baldwin ISCSI_SESSION_UNLOCK(is); 9554f0f5bf9SJohn Baldwin return; 9564f0f5bf9SJohn Baldwin } 957cdbc4a07SJohn Baldwin } else { 958cdbc4a07SJohn Baldwin if (bhssr->bhssr_expdatasn != htonl(0)) { 959cdbc4a07SJohn Baldwin ISCSI_SESSION_WARN(is, 960cdbc4a07SJohn Baldwin "ExpDataSN mismatch in SCSI Response (%u vs 0)", 961cdbc4a07SJohn Baldwin ntohl(bhssr->bhssr_expdatasn)); 962cdbc4a07SJohn Baldwin icl_pdu_free(response); 963cdbc4a07SJohn Baldwin iscsi_session_reconnect(is); 964cdbc4a07SJohn Baldwin ISCSI_SESSION_UNLOCK(is); 965cdbc4a07SJohn Baldwin return; 966cdbc4a07SJohn Baldwin } 967cdbc4a07SJohn Baldwin } 968cdbc4a07SJohn Baldwin skip_expdatasn: 969bcec64bcSEdward Tomasz Napierala 970bcec64bcSEdward Tomasz Napierala /* 971bcec64bcSEdward Tomasz Napierala * With iSER, after getting good response we can be sure 972bcec64bcSEdward Tomasz Napierala * that all the data has been successfully transferred. 973bcec64bcSEdward Tomasz Napierala */ 974bcec64bcSEdward Tomasz Napierala if (is->is_conn->ic_iser) { 975bcec64bcSEdward Tomasz Napierala resid = ntohl(bhssr->bhssr_residual_count); 976bcec64bcSEdward Tomasz Napierala if (bhssr->bhssr_flags & BHSSR_FLAGS_RESIDUAL_UNDERFLOW) { 977bcec64bcSEdward Tomasz Napierala io->io_received = ccb->csio.dxfer_len - resid; 978bcec64bcSEdward Tomasz Napierala } else if (bhssr->bhssr_flags & BHSSR_FLAGS_RESIDUAL_OVERFLOW) { 979bcec64bcSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "overflow: target indicates %d", resid); 980bcec64bcSEdward Tomasz Napierala } else { 981bcec64bcSEdward Tomasz Napierala io->io_received = ccb->csio.dxfer_len; 982bcec64bcSEdward Tomasz Napierala } 983bcec64bcSEdward Tomasz Napierala } 984bcec64bcSEdward Tomasz Napierala 98573e2e95dSAlexander Motin received = io->io_received; 986c215ad3aSAlexander Motin iscsi_outstanding_remove(is, io); 987c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 988c215ad3aSAlexander Motin 989009ea47eSEdward Tomasz Napierala if (bhssr->bhssr_response != BHSSR_RESPONSE_COMMAND_COMPLETED) { 990009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "service response 0x%x", bhssr->bhssr_response); 99173e2e95dSAlexander Motin if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 99273e2e95dSAlexander Motin xpt_freeze_devq(ccb->ccb_h.path, 1); 993009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 994009ea47eSEdward Tomasz Napierala } 99573e2e95dSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP_ERR | CAM_DEV_QFRZN; 996009ea47eSEdward Tomasz Napierala } else if (bhssr->bhssr_status == 0) { 99773e2e95dSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP; 998009ea47eSEdward Tomasz Napierala } else { 99973e2e95dSAlexander Motin if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 100073e2e95dSAlexander Motin xpt_freeze_devq(ccb->ccb_h.path, 1); 1001009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 1002009ea47eSEdward Tomasz Napierala } 100373e2e95dSAlexander Motin ccb->ccb_h.status = CAM_SCSI_STATUS_ERROR | CAM_DEV_QFRZN; 100473e2e95dSAlexander Motin ccb->csio.scsi_status = bhssr->bhssr_status; 1005009ea47eSEdward Tomasz Napierala } 1006009ea47eSEdward Tomasz Napierala 100773e2e95dSAlexander Motin csio = &ccb->csio; 1008009ea47eSEdward Tomasz Napierala data_segment_len = icl_pdu_data_segment_length(response); 1009009ea47eSEdward Tomasz Napierala if (data_segment_len > 0) { 1010009ea47eSEdward Tomasz Napierala if (data_segment_len < sizeof(sense_len)) { 1011009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "truncated data segment (%zd bytes)", 1012009ea47eSEdward Tomasz Napierala data_segment_len); 101373e2e95dSAlexander Motin if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 101473e2e95dSAlexander Motin xpt_freeze_devq(ccb->ccb_h.path, 1); 1015009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 1016009ea47eSEdward Tomasz Napierala } 101773e2e95dSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP_ERR | CAM_DEV_QFRZN; 1018009ea47eSEdward Tomasz Napierala goto out; 1019009ea47eSEdward Tomasz Napierala } 1020009ea47eSEdward Tomasz Napierala icl_pdu_get_data(response, 0, &sense_len, sizeof(sense_len)); 1021009ea47eSEdward Tomasz Napierala sense_len = ntohs(sense_len); 1022009ea47eSEdward Tomasz Napierala #if 0 1023009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "sense_len %d, data len %zd", 1024009ea47eSEdward Tomasz Napierala sense_len, data_segment_len); 1025009ea47eSEdward Tomasz Napierala #endif 1026009ea47eSEdward Tomasz Napierala if (sizeof(sense_len) + sense_len > data_segment_len) { 1027009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "truncated data segment " 1028009ea47eSEdward Tomasz Napierala "(%zd bytes, should be %zd)", 1029009ea47eSEdward Tomasz Napierala data_segment_len, sizeof(sense_len) + sense_len); 103073e2e95dSAlexander Motin if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 103173e2e95dSAlexander Motin xpt_freeze_devq(ccb->ccb_h.path, 1); 1032009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 1033009ea47eSEdward Tomasz Napierala } 103473e2e95dSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP_ERR | CAM_DEV_QFRZN; 1035009ea47eSEdward Tomasz Napierala goto out; 1036009ea47eSEdward Tomasz Napierala } else if (sizeof(sense_len) + sense_len < data_segment_len) 1037009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "oversize data segment " 1038009ea47eSEdward Tomasz Napierala "(%zd bytes, should be %zd)", 1039009ea47eSEdward Tomasz Napierala data_segment_len, sizeof(sense_len) + sense_len); 1040009ea47eSEdward Tomasz Napierala if (sense_len > csio->sense_len) { 1041009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "truncating sense from %d to %d", 1042009ea47eSEdward Tomasz Napierala sense_len, csio->sense_len); 1043009ea47eSEdward Tomasz Napierala sense_len = csio->sense_len; 1044009ea47eSEdward Tomasz Napierala } 1045009ea47eSEdward Tomasz Napierala icl_pdu_get_data(response, sizeof(sense_len), &csio->sense_data, sense_len); 1046009ea47eSEdward Tomasz Napierala csio->sense_resid = csio->sense_len - sense_len; 104773e2e95dSAlexander Motin ccb->ccb_h.status |= CAM_AUTOSNS_VALID; 1048009ea47eSEdward Tomasz Napierala } 1049009ea47eSEdward Tomasz Napierala 1050009ea47eSEdward Tomasz Napierala out: 1051009ea47eSEdward Tomasz Napierala if (bhssr->bhssr_flags & BHSSR_FLAGS_RESIDUAL_UNDERFLOW) 1052009ea47eSEdward Tomasz Napierala csio->resid = ntohl(bhssr->bhssr_residual_count); 1053009ea47eSEdward Tomasz Napierala 1054009ea47eSEdward Tomasz Napierala if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) { 105573e2e95dSAlexander Motin KASSERT(received <= csio->dxfer_len, 105673e2e95dSAlexander Motin ("received > csio->dxfer_len")); 105773e2e95dSAlexander Motin if (received < csio->dxfer_len) { 105873e2e95dSAlexander Motin if (csio->resid != csio->dxfer_len - received) { 1059009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "underflow mismatch: " 1060009ea47eSEdward Tomasz Napierala "target indicates %d, we calculated %zd", 106173e2e95dSAlexander Motin csio->resid, csio->dxfer_len - received); 1062009ea47eSEdward Tomasz Napierala } 106373e2e95dSAlexander Motin csio->resid = csio->dxfer_len - received; 1064009ea47eSEdward Tomasz Napierala } 1065009ea47eSEdward Tomasz Napierala } 1066009ea47eSEdward Tomasz Napierala 106773e2e95dSAlexander Motin xpt_done(ccb); 1068009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1069009ea47eSEdward Tomasz Napierala } 1070009ea47eSEdward Tomasz Napierala 1071009ea47eSEdward Tomasz Napierala static void 1072aa75114cSAlexander Motin iscsi_pdu_handle_task_response(struct icl_pdu *response) 1073aa75114cSAlexander Motin { 1074aa75114cSAlexander Motin struct iscsi_bhs_task_management_response *bhstmr; 1075aa75114cSAlexander Motin struct iscsi_outstanding *io, *aio; 1076aa75114cSAlexander Motin struct iscsi_session *is; 1077aa75114cSAlexander Motin 1078aa75114cSAlexander Motin is = PDU_SESSION(response); 1079aa75114cSAlexander Motin 1080aa75114cSAlexander Motin bhstmr = (struct iscsi_bhs_task_management_response *)response->ip_bhs; 1081aa75114cSAlexander Motin io = iscsi_outstanding_find(is, bhstmr->bhstmr_initiator_task_tag); 1082aa75114cSAlexander Motin if (io == NULL || io->io_ccb != NULL) { 1083aa75114cSAlexander Motin ISCSI_SESSION_WARN(is, "bad itt 0x%x", 1084aa75114cSAlexander Motin bhstmr->bhstmr_initiator_task_tag); 1085aa75114cSAlexander Motin icl_pdu_free(response); 1086aa75114cSAlexander Motin iscsi_session_reconnect(is); 1087aa75114cSAlexander Motin return; 1088aa75114cSAlexander Motin } 1089aa75114cSAlexander Motin 1090aa75114cSAlexander Motin if (bhstmr->bhstmr_response != BHSTMR_RESPONSE_FUNCTION_COMPLETE) { 1091aa75114cSAlexander Motin ISCSI_SESSION_WARN(is, "task response 0x%x", 1092aa75114cSAlexander Motin bhstmr->bhstmr_response); 1093aa75114cSAlexander Motin } else { 10943dd2a7a5SAlexander Motin aio = iscsi_outstanding_find(is, io->io_referenced_task_tag); 1095aa75114cSAlexander Motin if (aio != NULL && aio->io_ccb != NULL) 1096ad10496cSAndriy Gapon iscsi_session_terminate_task(is, aio, CAM_REQ_ABORTED); 1097aa75114cSAlexander Motin } 1098aa75114cSAlexander Motin 1099aa75114cSAlexander Motin iscsi_outstanding_remove(is, io); 1100aa75114cSAlexander Motin icl_pdu_free(response); 1101aa75114cSAlexander Motin } 1102aa75114cSAlexander Motin 1103aa75114cSAlexander Motin static void 11047aab9c14SJohn Baldwin iscsi_pdu_get_data_csio(struct icl_pdu *response, size_t pdu_offset, 11057aab9c14SJohn Baldwin struct ccb_scsiio *csio, size_t oreceived, size_t data_segment_len) 11067aab9c14SJohn Baldwin { 11077aab9c14SJohn Baldwin switch (csio->ccb_h.flags & CAM_DATA_MASK) { 11087aab9c14SJohn Baldwin case CAM_DATA_BIO: 11097aab9c14SJohn Baldwin icl_pdu_get_bio(response, pdu_offset, 11107aab9c14SJohn Baldwin (struct bio *)csio->data_ptr, oreceived, data_segment_len); 11117aab9c14SJohn Baldwin break; 11127aab9c14SJohn Baldwin case CAM_DATA_VADDR: 11137aab9c14SJohn Baldwin icl_pdu_get_data(response, pdu_offset, 11147aab9c14SJohn Baldwin csio->data_ptr + oreceived, data_segment_len); 11157aab9c14SJohn Baldwin break; 11167aab9c14SJohn Baldwin default: 11177aab9c14SJohn Baldwin __assert_unreachable(); 11187aab9c14SJohn Baldwin } 11197aab9c14SJohn Baldwin } 11207aab9c14SJohn Baldwin 11217aab9c14SJohn Baldwin static void 1122009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_data_in(struct icl_pdu *response) 1123009ea47eSEdward Tomasz Napierala { 1124009ea47eSEdward Tomasz Napierala struct iscsi_bhs_data_in *bhsdi; 1125009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io; 1126009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 112773e2e95dSAlexander Motin union ccb *ccb; 1128009ea47eSEdward Tomasz Napierala struct ccb_scsiio *csio; 112973e2e95dSAlexander Motin size_t data_segment_len, received, oreceived; 1130009ea47eSEdward Tomasz Napierala 1131009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 1132009ea47eSEdward Tomasz Napierala bhsdi = (struct iscsi_bhs_data_in *)response->ip_bhs; 1133009ea47eSEdward Tomasz Napierala io = iscsi_outstanding_find(is, bhsdi->bhsdi_initiator_task_tag); 1134aa75114cSAlexander Motin if (io == NULL || io->io_ccb == NULL) { 1135009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "bad itt 0x%x", bhsdi->bhsdi_initiator_task_tag); 1136009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1137009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1138c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 1139009ea47eSEdward Tomasz Napierala return; 1140009ea47eSEdward Tomasz Napierala } 1141009ea47eSEdward Tomasz Napierala 11424f0f5bf9SJohn Baldwin if (io->io_datasn != ntohl(bhsdi->bhsdi_datasn)) { 11434f0f5bf9SJohn Baldwin ISCSI_SESSION_WARN(is, "received Data-In PDU with " 11444f0f5bf9SJohn Baldwin "DataSN %u, while expected %u; dropping connection", 11454f0f5bf9SJohn Baldwin ntohl(bhsdi->bhsdi_datasn), io->io_datasn); 11464f0f5bf9SJohn Baldwin icl_pdu_free(response); 11474f0f5bf9SJohn Baldwin iscsi_session_reconnect(is); 11484f0f5bf9SJohn Baldwin ISCSI_SESSION_UNLOCK(is); 11494f0f5bf9SJohn Baldwin return; 11504f0f5bf9SJohn Baldwin } 11514f0f5bf9SJohn Baldwin io->io_datasn += response->ip_additional_pdus + 1; 11524f0f5bf9SJohn Baldwin 1153009ea47eSEdward Tomasz Napierala data_segment_len = icl_pdu_data_segment_length(response); 1154009ea47eSEdward Tomasz Napierala if (data_segment_len == 0) { 1155009ea47eSEdward Tomasz Napierala /* 1156009ea47eSEdward Tomasz Napierala * "The sending of 0 length data segments should be avoided, 1157009ea47eSEdward Tomasz Napierala * but initiators and targets MUST be able to properly receive 1158009ea47eSEdward Tomasz Napierala * 0 length data segments." 1159009ea47eSEdward Tomasz Napierala */ 1160c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 1161009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1162009ea47eSEdward Tomasz Napierala return; 1163009ea47eSEdward Tomasz Napierala } 1164009ea47eSEdward Tomasz Napierala 1165009ea47eSEdward Tomasz Napierala /* 1166009ea47eSEdward Tomasz Napierala * We need to track this for security reasons - without it, malicious target 1167009ea47eSEdward Tomasz Napierala * could respond to SCSI READ without sending Data-In PDUs, which would result 1168009ea47eSEdward Tomasz Napierala * in read operation on the initiator side returning random kernel data. 1169009ea47eSEdward Tomasz Napierala */ 1170009ea47eSEdward Tomasz Napierala if (ntohl(bhsdi->bhsdi_buffer_offset) != io->io_received) { 1171009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "data out of order; expected offset %zd, got %zd", 1172009ea47eSEdward Tomasz Napierala io->io_received, (size_t)ntohl(bhsdi->bhsdi_buffer_offset)); 1173009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1174009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1175c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 1176009ea47eSEdward Tomasz Napierala return; 1177009ea47eSEdward Tomasz Napierala } 1178009ea47eSEdward Tomasz Napierala 117973e2e95dSAlexander Motin ccb = io->io_ccb; 118073e2e95dSAlexander Motin csio = &ccb->csio; 1181009ea47eSEdward Tomasz Napierala 1182d43c9ec1SEdward Tomasz Napierala if (io->io_received + data_segment_len > csio->dxfer_len) { 1183009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "oversize data segment (%zd bytes " 1184d43c9ec1SEdward Tomasz Napierala "at offset %zd, buffer is %d)", 1185d43c9ec1SEdward Tomasz Napierala data_segment_len, io->io_received, csio->dxfer_len); 1186009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1187009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1188c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 1189009ea47eSEdward Tomasz Napierala return; 1190009ea47eSEdward Tomasz Napierala } 1191009ea47eSEdward Tomasz Napierala 119273e2e95dSAlexander Motin oreceived = io->io_received; 1193009ea47eSEdward Tomasz Napierala io->io_received += data_segment_len; 119473e2e95dSAlexander Motin received = io->io_received; 1195c215ad3aSAlexander Motin if ((bhsdi->bhsdi_flags & BHSDI_FLAGS_S) != 0) 1196c215ad3aSAlexander Motin iscsi_outstanding_remove(is, io); 1197c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 1198c215ad3aSAlexander Motin 11997aab9c14SJohn Baldwin iscsi_pdu_get_data_csio(response, 0, csio, oreceived, data_segment_len); 1200009ea47eSEdward Tomasz Napierala 1201009ea47eSEdward Tomasz Napierala /* 1202009ea47eSEdward Tomasz Napierala * XXX: Check F. 1203009ea47eSEdward Tomasz Napierala */ 120469647b7bSEdward Tomasz Napierala if ((bhsdi->bhsdi_flags & BHSDI_FLAGS_S) == 0) { 120569647b7bSEdward Tomasz Napierala /* 120669647b7bSEdward Tomasz Napierala * Nothing more to do. 120769647b7bSEdward Tomasz Napierala */ 120869647b7bSEdward Tomasz Napierala icl_pdu_free(response); 120969647b7bSEdward Tomasz Napierala return; 121069647b7bSEdward Tomasz Napierala } 121169647b7bSEdward Tomasz Napierala 1212009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "got S flag; status 0x%x", bhsdi->bhsdi_status); 1213009ea47eSEdward Tomasz Napierala if (bhsdi->bhsdi_status == 0) { 121473e2e95dSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP; 1215009ea47eSEdward Tomasz Napierala } else { 121673e2e95dSAlexander Motin if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 121773e2e95dSAlexander Motin xpt_freeze_devq(ccb->ccb_h.path, 1); 1218009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 1219009ea47eSEdward Tomasz Napierala } 122073e2e95dSAlexander Motin ccb->ccb_h.status = CAM_SCSI_STATUS_ERROR | CAM_DEV_QFRZN; 1221009ea47eSEdward Tomasz Napierala csio->scsi_status = bhsdi->bhsdi_status; 1222009ea47eSEdward Tomasz Napierala } 122369647b7bSEdward Tomasz Napierala 122469647b7bSEdward Tomasz Napierala if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) { 122573e2e95dSAlexander Motin KASSERT(received <= csio->dxfer_len, 122673e2e95dSAlexander Motin ("received > csio->dxfer_len")); 122773e2e95dSAlexander Motin if (received < csio->dxfer_len) { 122869647b7bSEdward Tomasz Napierala csio->resid = ntohl(bhsdi->bhsdi_residual_count); 122973e2e95dSAlexander Motin if (csio->resid != csio->dxfer_len - received) { 123069647b7bSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "underflow mismatch: " 123169647b7bSEdward Tomasz Napierala "target indicates %d, we calculated %zd", 123273e2e95dSAlexander Motin csio->resid, csio->dxfer_len - received); 123369647b7bSEdward Tomasz Napierala } 123473e2e95dSAlexander Motin csio->resid = csio->dxfer_len - received; 123569647b7bSEdward Tomasz Napierala } 1236009ea47eSEdward Tomasz Napierala } 1237009ea47eSEdward Tomasz Napierala 123873e2e95dSAlexander Motin xpt_done(ccb); 1239009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1240009ea47eSEdward Tomasz Napierala } 1241009ea47eSEdward Tomasz Napierala 1242009ea47eSEdward Tomasz Napierala static void 1243009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_logout_response(struct icl_pdu *response) 1244009ea47eSEdward Tomasz Napierala { 1245009ea47eSEdward Tomasz Napierala 1246009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(PDU_SESSION(response), "logout response"); 1247009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1248009ea47eSEdward Tomasz Napierala } 1249009ea47eSEdward Tomasz Napierala 12507aab9c14SJohn Baldwin static int 12517aab9c14SJohn Baldwin iscsi_pdu_append_data_csio(struct icl_pdu *request, struct ccb_scsiio *csio, 12527aab9c14SJohn Baldwin size_t off, size_t len, int how) 12537aab9c14SJohn Baldwin { 12547aab9c14SJohn Baldwin switch (csio->ccb_h.flags & CAM_DATA_MASK) { 12557aab9c14SJohn Baldwin case CAM_DATA_BIO: 12567aab9c14SJohn Baldwin return (icl_pdu_append_bio(request, 12577aab9c14SJohn Baldwin (struct bio *)csio->data_ptr, off, len, how)); 12587aab9c14SJohn Baldwin case CAM_DATA_VADDR: 12597aab9c14SJohn Baldwin return (icl_pdu_append_data(request, csio->data_ptr + off, len, 12607aab9c14SJohn Baldwin how)); 12617aab9c14SJohn Baldwin default: 12627aab9c14SJohn Baldwin __assert_unreachable(); 12637aab9c14SJohn Baldwin } 12647aab9c14SJohn Baldwin } 12657aab9c14SJohn Baldwin 1266009ea47eSEdward Tomasz Napierala static void 1267009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_r2t(struct icl_pdu *response) 1268009ea47eSEdward Tomasz Napierala { 1269009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 1270009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1271009ea47eSEdward Tomasz Napierala struct iscsi_bhs_r2t *bhsr2t; 1272009ea47eSEdward Tomasz Napierala struct iscsi_bhs_data_out *bhsdo; 1273009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io; 1274009ea47eSEdward Tomasz Napierala struct ccb_scsiio *csio; 1275f0594f52SJohn Baldwin size_t off, len, max_send_data_segment_length, total_len; 1276009ea47eSEdward Tomasz Napierala int error; 12773dd2a7a5SAlexander Motin uint32_t datasn = 0; 1278009ea47eSEdward Tomasz Napierala 1279009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 1280009ea47eSEdward Tomasz Napierala 1281009ea47eSEdward Tomasz Napierala bhsr2t = (struct iscsi_bhs_r2t *)response->ip_bhs; 1282009ea47eSEdward Tomasz Napierala io = iscsi_outstanding_find(is, bhsr2t->bhsr2t_initiator_task_tag); 1283aa75114cSAlexander Motin if (io == NULL || io->io_ccb == NULL) { 1284009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "bad itt 0x%x; reconnecting", 1285009ea47eSEdward Tomasz Napierala bhsr2t->bhsr2t_initiator_task_tag); 1286009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1287009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1288009ea47eSEdward Tomasz Napierala return; 1289009ea47eSEdward Tomasz Napierala } 1290009ea47eSEdward Tomasz Napierala 1291009ea47eSEdward Tomasz Napierala csio = &io->io_ccb->csio; 1292009ea47eSEdward Tomasz Napierala 1293009ea47eSEdward Tomasz Napierala if ((csio->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_OUT) { 1294009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "received R2T for read command; reconnecting"); 1295009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1296009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1297009ea47eSEdward Tomasz Napierala return; 1298009ea47eSEdward Tomasz Napierala } 1299009ea47eSEdward Tomasz Napierala 1300009ea47eSEdward Tomasz Napierala /* 1301009ea47eSEdward Tomasz Napierala * XXX: Verify R2TSN. 1302009ea47eSEdward Tomasz Napierala */ 1303009ea47eSEdward Tomasz Napierala 1304009ea47eSEdward Tomasz Napierala off = ntohl(bhsr2t->bhsr2t_buffer_offset); 1305d43c9ec1SEdward Tomasz Napierala if (off > csio->dxfer_len) { 1306d43c9ec1SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target requested invalid offset " 1307756220b5SGordon Bergling "%zd, buffer is %d; reconnecting", off, csio->dxfer_len); 1308d43c9ec1SEdward Tomasz Napierala icl_pdu_free(response); 1309d43c9ec1SEdward Tomasz Napierala iscsi_session_reconnect(is); 1310d43c9ec1SEdward Tomasz Napierala return; 1311d43c9ec1SEdward Tomasz Napierala } 1312d43c9ec1SEdward Tomasz Napierala 1313009ea47eSEdward Tomasz Napierala total_len = ntohl(bhsr2t->bhsr2t_desired_data_transfer_length); 1314d43c9ec1SEdward Tomasz Napierala if (total_len == 0 || total_len > csio->dxfer_len) { 1315d43c9ec1SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target requested invalid length " 1316d43c9ec1SEdward Tomasz Napierala "%zd, buffer is %d; reconnecting", total_len, csio->dxfer_len); 1317d43c9ec1SEdward Tomasz Napierala icl_pdu_free(response); 1318d43c9ec1SEdward Tomasz Napierala iscsi_session_reconnect(is); 1319d43c9ec1SEdward Tomasz Napierala return; 1320d43c9ec1SEdward Tomasz Napierala } 1321009ea47eSEdward Tomasz Napierala 1322009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "r2t; off %zd, len %zd", off, total_len); 1323009ea47eSEdward Tomasz Napierala 1324f0594f52SJohn Baldwin if (is->is_conn->ic_hw_isomax != 0) 1325f0594f52SJohn Baldwin max_send_data_segment_length = is->is_conn->ic_hw_isomax; 1326f0594f52SJohn Baldwin else 1327f0594f52SJohn Baldwin max_send_data_segment_length = 1328f0594f52SJohn Baldwin is->is_conn->ic_max_send_data_segment_length; 1329009ea47eSEdward Tomasz Napierala for (;;) { 1330009ea47eSEdward Tomasz Napierala len = total_len; 1331009ea47eSEdward Tomasz Napierala 1332f0594f52SJohn Baldwin if (len > max_send_data_segment_length) 1333f0594f52SJohn Baldwin len = max_send_data_segment_length; 1334009ea47eSEdward Tomasz Napierala 1335009ea47eSEdward Tomasz Napierala if (off + len > csio->dxfer_len) { 1336d43c9ec1SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target requested invalid " 1337d43c9ec1SEdward Tomasz Napierala "length/offset %zd, buffer is %d; reconnecting", 1338009ea47eSEdward Tomasz Napierala off + len, csio->dxfer_len); 1339009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1340009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1341009ea47eSEdward Tomasz Napierala return; 1342009ea47eSEdward Tomasz Napierala } 1343009ea47eSEdward Tomasz Napierala 1344d2d52b00SEdward Tomasz Napierala request = icl_pdu_new(response->ip_conn, M_NOWAIT); 1345009ea47eSEdward Tomasz Napierala if (request == NULL) { 1346009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1347009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1348009ea47eSEdward Tomasz Napierala return; 1349009ea47eSEdward Tomasz Napierala } 1350009ea47eSEdward Tomasz Napierala 1351009ea47eSEdward Tomasz Napierala bhsdo = (struct iscsi_bhs_data_out *)request->ip_bhs; 1352009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_opcode = ISCSI_BHS_OPCODE_SCSI_DATA_OUT; 1353009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_lun = bhsr2t->bhsr2t_lun; 1354009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_initiator_task_tag = 1355009ea47eSEdward Tomasz Napierala bhsr2t->bhsr2t_initiator_task_tag; 1356009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_target_transfer_tag = 1357009ea47eSEdward Tomasz Napierala bhsr2t->bhsr2t_target_transfer_tag; 1358f0594f52SJohn Baldwin bhsdo->bhsdo_datasn = htonl(datasn); 1359009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_buffer_offset = htonl(off); 13607aab9c14SJohn Baldwin error = iscsi_pdu_append_data_csio(request, csio, off, len, 13619c7a4875SJohn Baldwin M_NOWAIT | ICL_NOCOPY); 1362009ea47eSEdward Tomasz Napierala if (error != 0) { 1363d43c9ec1SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate memory; " 1364d43c9ec1SEdward Tomasz Napierala "reconnecting"); 1365009ea47eSEdward Tomasz Napierala icl_pdu_free(request); 1366009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1367009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1368009ea47eSEdward Tomasz Napierala return; 1369009ea47eSEdward Tomasz Napierala } 1370009ea47eSEdward Tomasz Napierala 1371f0594f52SJohn Baldwin datasn += howmany(len, 1372f0594f52SJohn Baldwin is->is_conn->ic_max_send_data_segment_length); 1373009ea47eSEdward Tomasz Napierala off += len; 1374009ea47eSEdward Tomasz Napierala total_len -= len; 1375009ea47eSEdward Tomasz Napierala 1376009ea47eSEdward Tomasz Napierala if (total_len == 0) { 1377009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_flags |= BHSDO_FLAGS_F; 1378009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "setting F, off %zd", off); 1379009ea47eSEdward Tomasz Napierala } else { 1380009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "not finished, off %zd", off); 1381009ea47eSEdward Tomasz Napierala } 1382009ea47eSEdward Tomasz Napierala 1383009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(request); 1384009ea47eSEdward Tomasz Napierala 1385009ea47eSEdward Tomasz Napierala if (total_len == 0) 1386009ea47eSEdward Tomasz Napierala break; 1387009ea47eSEdward Tomasz Napierala } 1388009ea47eSEdward Tomasz Napierala 1389009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1390009ea47eSEdward Tomasz Napierala } 1391009ea47eSEdward Tomasz Napierala 1392009ea47eSEdward Tomasz Napierala static void 1393009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_async_message(struct icl_pdu *response) 1394009ea47eSEdward Tomasz Napierala { 1395009ea47eSEdward Tomasz Napierala struct iscsi_bhs_asynchronous_message *bhsam; 1396009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1397009ea47eSEdward Tomasz Napierala 1398009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 1399009ea47eSEdward Tomasz Napierala bhsam = (struct iscsi_bhs_asynchronous_message *)response->ip_bhs; 1400009ea47eSEdward Tomasz Napierala switch (bhsam->bhsam_async_event) { 1401009ea47eSEdward Tomasz Napierala case BHSAM_EVENT_TARGET_REQUESTS_LOGOUT: 1402009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target requests logout; removing session"); 1403009ea47eSEdward Tomasz Napierala iscsi_session_logout(is); 1404009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1405009ea47eSEdward Tomasz Napierala break; 1406009ea47eSEdward Tomasz Napierala case BHSAM_EVENT_TARGET_TERMINATES_CONNECTION: 14076960c4e1SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target indicates it will drop the connection"); 1408009ea47eSEdward Tomasz Napierala break; 1409009ea47eSEdward Tomasz Napierala case BHSAM_EVENT_TARGET_TERMINATES_SESSION: 14106960c4e1SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target indicates it will drop the session"); 1411009ea47eSEdward Tomasz Napierala break; 1412009ea47eSEdward Tomasz Napierala default: 1413009ea47eSEdward Tomasz Napierala /* 1414009ea47eSEdward Tomasz Napierala * XXX: Technically, we're obligated to also handle 1415009ea47eSEdward Tomasz Napierala * parameter renegotiation. 1416009ea47eSEdward Tomasz Napierala */ 1417009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "ignoring AsyncEvent %d", bhsam->bhsam_async_event); 1418009ea47eSEdward Tomasz Napierala break; 1419009ea47eSEdward Tomasz Napierala } 1420009ea47eSEdward Tomasz Napierala 1421009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1422009ea47eSEdward Tomasz Napierala } 1423009ea47eSEdward Tomasz Napierala 1424009ea47eSEdward Tomasz Napierala static void 1425009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_reject(struct icl_pdu *response) 1426009ea47eSEdward Tomasz Napierala { 1427009ea47eSEdward Tomasz Napierala struct iscsi_bhs_reject *bhsr; 1428009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1429009ea47eSEdward Tomasz Napierala 1430009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 1431009ea47eSEdward Tomasz Napierala bhsr = (struct iscsi_bhs_reject *)response->ip_bhs; 1432009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "received Reject PDU, reason 0x%x; protocol error?", 1433009ea47eSEdward Tomasz Napierala bhsr->bhsr_reason); 1434009ea47eSEdward Tomasz Napierala 1435009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1436009ea47eSEdward Tomasz Napierala } 1437009ea47eSEdward Tomasz Napierala 1438009ea47eSEdward Tomasz Napierala static int 1439009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_wait(struct iscsi_softc *sc, 14407b02c1e8SJohn Baldwin struct iscsi_daemon_request *request, bool freebsd13) 1441009ea47eSEdward Tomasz Napierala { 1442009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1443009ea47eSEdward Tomasz Napierala int error; 1444009ea47eSEdward Tomasz Napierala 1445009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1446009ea47eSEdward Tomasz Napierala for (;;) { 1447009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 14482be596adSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1449ba165a31SEdward Tomasz Napierala if (is->is_conf.isc_enable == 0 && 1450ba165a31SEdward Tomasz Napierala is->is_conf.isc_discovery == 0) { 1451ba165a31SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1452ba165a31SEdward Tomasz Napierala continue; 1453ba165a31SEdward Tomasz Napierala } 1454009ea47eSEdward Tomasz Napierala if (is->is_waiting_for_iscsid) 1455009ea47eSEdward Tomasz Napierala break; 14562be596adSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1457009ea47eSEdward Tomasz Napierala } 1458009ea47eSEdward Tomasz Napierala 1459009ea47eSEdward Tomasz Napierala if (is == NULL) { 146089df4847SJohn Baldwin if (sc->sc_unloading) { 146189df4847SJohn Baldwin sx_sunlock(&sc->sc_lock); 146289df4847SJohn Baldwin return (ENXIO); 146389df4847SJohn Baldwin } 146489df4847SJohn Baldwin 1465009ea47eSEdward Tomasz Napierala /* 1466009ea47eSEdward Tomasz Napierala * No session requires attention from iscsid(8); wait. 1467009ea47eSEdward Tomasz Napierala */ 1468009ea47eSEdward Tomasz Napierala error = cv_wait_sig(&sc->sc_cv, &sc->sc_lock); 1469009ea47eSEdward Tomasz Napierala if (error != 0) { 1470009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1471009ea47eSEdward Tomasz Napierala return (error); 1472009ea47eSEdward Tomasz Napierala } 1473009ea47eSEdward Tomasz Napierala continue; 1474009ea47eSEdward Tomasz Napierala } 1475009ea47eSEdward Tomasz Napierala 1476009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = false; 1477009ea47eSEdward Tomasz Napierala is->is_login_phase = true; 1478009ea47eSEdward Tomasz Napierala is->is_reason[0] = '\0'; 1479009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1480009ea47eSEdward Tomasz Napierala 1481009ea47eSEdward Tomasz Napierala request->idr_session_id = is->is_id; 1482ffe82e05SAlexander Motin memcpy(&request->idr_isid, &is->is_isid, 1483ffe82e05SAlexander Motin sizeof(request->idr_isid)); 1484ffe82e05SAlexander Motin request->idr_tsih = 0; /* New or reinstated session. */ 1485009ea47eSEdward Tomasz Napierala memcpy(&request->idr_conf, &is->is_conf, 1486009ea47eSEdward Tomasz Napierala sizeof(request->idr_conf)); 1487009ea47eSEdward Tomasz Napierala 14887b02c1e8SJohn Baldwin #ifdef COMPAT_FREEBSD13 14897b02c1e8SJohn Baldwin if (freebsd13) { 14907b02c1e8SJohn Baldwin struct icl_drv_limits idl; 14917b02c1e8SJohn Baldwin struct iscsi_daemon_request13 *request13; 14927b02c1e8SJohn Baldwin 149382babffbSEdward Tomasz Napierala error = icl_limits(is->is_conf.isc_offload, 14947b02c1e8SJohn Baldwin is->is_conf.isc_iser, 0, &idl); 149582babffbSEdward Tomasz Napierala if (error != 0) { 14967b02c1e8SJohn Baldwin ISCSI_SESSION_WARN(is, "icl_limits for " 14977b02c1e8SJohn Baldwin "offload \"%s\" failed with error %d", 14987b02c1e8SJohn Baldwin is->is_conf.isc_offload, error); 149982babffbSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 150082babffbSEdward Tomasz Napierala return (error); 150182babffbSEdward Tomasz Napierala } 15027b02c1e8SJohn Baldwin request13 = (struct iscsi_daemon_request13 *)request; 15037b02c1e8SJohn Baldwin request13->idr_limits.isl_max_recv_data_segment_length = 150497b84d34SNavdeep Parhar idl.idl_max_recv_data_segment_length; 15057b02c1e8SJohn Baldwin request13->idr_limits.isl_max_send_data_segment_length = 150648214203SNavdeep Parhar idl.idl_max_send_data_segment_length; 15077b02c1e8SJohn Baldwin request13->idr_limits.isl_max_burst_length = 150897b84d34SNavdeep Parhar idl.idl_max_burst_length; 15097b02c1e8SJohn Baldwin request13->idr_limits.isl_first_burst_length = 151097b84d34SNavdeep Parhar idl.idl_first_burst_length; 15117b02c1e8SJohn Baldwin } 15127b02c1e8SJohn Baldwin #endif 1513009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1514009ea47eSEdward Tomasz Napierala return (0); 1515009ea47eSEdward Tomasz Napierala } 1516009ea47eSEdward Tomasz Napierala } 1517009ea47eSEdward Tomasz Napierala 1518009ea47eSEdward Tomasz Napierala static int 15197b02c1e8SJohn Baldwin iscsi_ioctl_daemon_limits(struct iscsi_softc *sc, 15207b02c1e8SJohn Baldwin struct iscsi_daemon_limits *limits) 15217b02c1e8SJohn Baldwin { 15227b02c1e8SJohn Baldwin struct icl_drv_limits idl; 15237b02c1e8SJohn Baldwin struct iscsi_session *is; 15247b02c1e8SJohn Baldwin int error; 15257b02c1e8SJohn Baldwin 15267b02c1e8SJohn Baldwin sx_slock(&sc->sc_lock); 15277b02c1e8SJohn Baldwin 15287b02c1e8SJohn Baldwin /* 15297b02c1e8SJohn Baldwin * Find the session to fetch limits for. 15307b02c1e8SJohn Baldwin */ 15317b02c1e8SJohn Baldwin TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 15327b02c1e8SJohn Baldwin if (is->is_id == limits->idl_session_id) 15337b02c1e8SJohn Baldwin break; 15347b02c1e8SJohn Baldwin } 15357b02c1e8SJohn Baldwin if (is == NULL) { 15367b02c1e8SJohn Baldwin sx_sunlock(&sc->sc_lock); 15377b02c1e8SJohn Baldwin return (ESRCH); 15387b02c1e8SJohn Baldwin } 15397b02c1e8SJohn Baldwin 15407b02c1e8SJohn Baldwin error = icl_limits(is->is_conf.isc_offload, is->is_conf.isc_iser, 15417b02c1e8SJohn Baldwin limits->idl_socket, &idl); 15427b02c1e8SJohn Baldwin sx_sunlock(&sc->sc_lock); 15437b02c1e8SJohn Baldwin if (error != 0) { 15447b02c1e8SJohn Baldwin ISCSI_SESSION_WARN(is, "icl_limits for offload \"%s\" " 15457b02c1e8SJohn Baldwin "failed with error %d", is->is_conf.isc_offload, error); 15467b02c1e8SJohn Baldwin return (error); 15477b02c1e8SJohn Baldwin } 15487b02c1e8SJohn Baldwin limits->idl_limits.isl_max_recv_data_segment_length = 15497b02c1e8SJohn Baldwin idl.idl_max_recv_data_segment_length; 15507b02c1e8SJohn Baldwin limits->idl_limits.isl_max_send_data_segment_length = 15517b02c1e8SJohn Baldwin idl.idl_max_send_data_segment_length; 15527b02c1e8SJohn Baldwin limits->idl_limits.isl_max_burst_length = 15537b02c1e8SJohn Baldwin idl.idl_max_burst_length; 15547b02c1e8SJohn Baldwin limits->idl_limits.isl_first_burst_length = 15557b02c1e8SJohn Baldwin idl.idl_first_burst_length; 15567b02c1e8SJohn Baldwin 15577b02c1e8SJohn Baldwin return (0); 15587b02c1e8SJohn Baldwin } 15597b02c1e8SJohn Baldwin 15607b02c1e8SJohn Baldwin static int 1561009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_handoff(struct iscsi_softc *sc, 1562009ea47eSEdward Tomasz Napierala struct iscsi_daemon_handoff *handoff) 1563009ea47eSEdward Tomasz Napierala { 1564009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1565f5cadbc4SNavdeep Parhar struct icl_conn *ic; 1566009ea47eSEdward Tomasz Napierala int error; 1567009ea47eSEdward Tomasz Napierala 1568009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1569009ea47eSEdward Tomasz Napierala 1570009ea47eSEdward Tomasz Napierala /* 1571009ea47eSEdward Tomasz Napierala * Find the session to hand off socket to. 1572009ea47eSEdward Tomasz Napierala */ 1573009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1574009ea47eSEdward Tomasz Napierala if (is->is_id == handoff->idh_session_id) 1575009ea47eSEdward Tomasz Napierala break; 1576009ea47eSEdward Tomasz Napierala } 1577009ea47eSEdward Tomasz Napierala if (is == NULL) { 1578009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1579009ea47eSEdward Tomasz Napierala return (ESRCH); 1580009ea47eSEdward Tomasz Napierala } 1581009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1582f5cadbc4SNavdeep Parhar ic = is->is_conn; 1583009ea47eSEdward Tomasz Napierala if (is->is_conf.isc_discovery || is->is_terminating) { 1584009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1585009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1586009ea47eSEdward Tomasz Napierala return (EINVAL); 1587009ea47eSEdward Tomasz Napierala } 15880260023fSEdward Tomasz Napierala if (is->is_connected) { 15890260023fSEdward Tomasz Napierala /* 15900260023fSEdward Tomasz Napierala * This might have happened because another iscsid(8) 15910260023fSEdward Tomasz Napierala * instance handed off the connection in the meantime. 15920260023fSEdward Tomasz Napierala * Just return. 15930260023fSEdward Tomasz Napierala */ 15940260023fSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "handoff on already connected " 15950260023fSEdward Tomasz Napierala "session"); 15960260023fSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 15970260023fSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 15980260023fSEdward Tomasz Napierala return (EBUSY); 15990260023fSEdward Tomasz Napierala } 1600009ea47eSEdward Tomasz Napierala 1601009ea47eSEdward Tomasz Napierala strlcpy(is->is_target_alias, handoff->idh_target_alias, 1602009ea47eSEdward Tomasz Napierala sizeof(is->is_target_alias)); 1603ffe82e05SAlexander Motin is->is_tsih = handoff->idh_tsih; 1604009ea47eSEdward Tomasz Napierala is->is_statsn = handoff->idh_statsn; 16057dbbd1aeSAlexander Motin is->is_protocol_level = handoff->idh_protocol_level; 1606009ea47eSEdward Tomasz Napierala is->is_initial_r2t = handoff->idh_initial_r2t; 1607009ea47eSEdward Tomasz Napierala is->is_immediate_data = handoff->idh_immediate_data; 1608c8b73c2cSNavdeep Parhar 16090cc7d64aSJohn Baldwin ic->ic_max_recv_data_segment_length = 161097b84d34SNavdeep Parhar handoff->idh_max_recv_data_segment_length; 16110cc7d64aSJohn Baldwin ic->ic_max_send_data_segment_length = 161297b84d34SNavdeep Parhar handoff->idh_max_send_data_segment_length; 1613009ea47eSEdward Tomasz Napierala is->is_max_burst_length = handoff->idh_max_burst_length; 1614009ea47eSEdward Tomasz Napierala is->is_first_burst_length = handoff->idh_first_burst_length; 1615009ea47eSEdward Tomasz Napierala 1616009ea47eSEdward Tomasz Napierala if (handoff->idh_header_digest == ISCSI_DIGEST_CRC32C) 1617f5cadbc4SNavdeep Parhar ic->ic_header_crc32c = true; 1618009ea47eSEdward Tomasz Napierala else 1619f5cadbc4SNavdeep Parhar ic->ic_header_crc32c = false; 1620009ea47eSEdward Tomasz Napierala if (handoff->idh_data_digest == ISCSI_DIGEST_CRC32C) 1621f5cadbc4SNavdeep Parhar ic->ic_data_crc32c = true; 1622009ea47eSEdward Tomasz Napierala else 1623f5cadbc4SNavdeep Parhar ic->ic_data_crc32c = false; 1624b218ca6fSEdward Tomasz Napierala ic->ic_maxtags = maxtags; 1625009ea47eSEdward Tomasz Napierala 1626009ea47eSEdward Tomasz Napierala is->is_cmdsn = 0; 1627cf23c509SEdward Tomasz Napierala is->is_expcmdsn = 0; 1628cf23c509SEdward Tomasz Napierala is->is_maxcmdsn = 0; 1629009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = false; 1630009ea47eSEdward Tomasz Napierala is->is_login_phase = false; 1631009ea47eSEdward Tomasz Napierala is->is_timeout = 0; 1632bd6bb493SRichard Scheffenegger is->is_ping_timeout = is->is_conf.isc_ping_timeout; 1633bd6bb493SRichard Scheffenegger if (is->is_ping_timeout < 0) 1634bd6bb493SRichard Scheffenegger is->is_ping_timeout = ping_timeout; 1635bd6bb493SRichard Scheffenegger is->is_login_timeout = is->is_conf.isc_login_timeout; 1636bd6bb493SRichard Scheffenegger if (is->is_login_timeout < 0) 1637bd6bb493SRichard Scheffenegger is->is_login_timeout = login_timeout; 1638009ea47eSEdward Tomasz Napierala is->is_connected = true; 1639009ea47eSEdward Tomasz Napierala is->is_reason[0] = '\0'; 1640009ea47eSEdward Tomasz Napierala 1641009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1642009ea47eSEdward Tomasz Napierala 164357a4f20bSEdward Tomasz Napierala /* 1644906a424bSEdward Tomasz Napierala * If we're going through the proxy, the idh_socket will be 0, 1645906a424bSEdward Tomasz Napierala * and the ICL module can simply ignore this call. It can also 1646906a424bSEdward Tomasz Napierala * use it to determine it's no longer in the Login phase. 164757a4f20bSEdward Tomasz Napierala */ 1648f5cadbc4SNavdeep Parhar error = icl_conn_handoff(ic, handoff->idh_socket); 1649009ea47eSEdward Tomasz Napierala if (error != 0) { 1650009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1651009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1652009ea47eSEdward Tomasz Napierala return (error); 1653009ea47eSEdward Tomasz Napierala } 1654009ea47eSEdward Tomasz Napierala 1655009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1656009ea47eSEdward Tomasz Napierala 1657009ea47eSEdward Tomasz Napierala if (is->is_sim != NULL) { 1658009ea47eSEdward Tomasz Napierala /* 1659009ea47eSEdward Tomasz Napierala * When reconnecting, there already is SIM allocated for the session. 1660009ea47eSEdward Tomasz Napierala */ 1661009ea47eSEdward Tomasz Napierala KASSERT(is->is_simq_frozen, ("reconnect without frozen simq")); 1662009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1663009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "releasing"); 1664009ea47eSEdward Tomasz Napierala is->is_simq_frozen = false; 1665186bcdaaSEdward Tomasz Napierala xpt_release_simq(is->is_sim, 1); 1666009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1667009ea47eSEdward Tomasz Napierala 1668009ea47eSEdward Tomasz Napierala } else { 1669009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1670b218ca6fSEdward Tomasz Napierala is->is_devq = cam_simq_alloc(ic->ic_maxtags); 1671009ea47eSEdward Tomasz Napierala if (is->is_devq == NULL) { 1672fa669505SKa Ho Ng ISCSI_SESSION_UNLOCK(is); 1673009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate simq"); 1674009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1675009ea47eSEdward Tomasz Napierala return (ENOMEM); 1676009ea47eSEdward Tomasz Napierala } 1677009ea47eSEdward Tomasz Napierala 167847769bc5SJohn Baldwin is->is_sim = cam_sim_alloc(iscsi_action, NULL, "iscsi", 1679009ea47eSEdward Tomasz Napierala is, is->is_id /* unit */, &is->is_lock, 1680b218ca6fSEdward Tomasz Napierala 1, ic->ic_maxtags, is->is_devq); 1681009ea47eSEdward Tomasz Napierala if (is->is_sim == NULL) { 1682009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1683009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate SIM"); 1684009ea47eSEdward Tomasz Napierala cam_simq_free(is->is_devq); 1685009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1686009ea47eSEdward Tomasz Napierala return (ENOMEM); 1687009ea47eSEdward Tomasz Napierala } 1688009ea47eSEdward Tomasz Napierala 168930f8afd0SWarner Losh if (xpt_bus_register(is->is_sim, NULL, 0) != 0) { 1690009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1691009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to register bus"); 1692009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1693009ea47eSEdward Tomasz Napierala return (ENOMEM); 1694009ea47eSEdward Tomasz Napierala } 1695009ea47eSEdward Tomasz Napierala 1696009ea47eSEdward Tomasz Napierala error = xpt_create_path(&is->is_path, /*periph*/NULL, 1697009ea47eSEdward Tomasz Napierala cam_sim_path(is->is_sim), CAM_TARGET_WILDCARD, 1698009ea47eSEdward Tomasz Napierala CAM_LUN_WILDCARD); 1699009ea47eSEdward Tomasz Napierala if (error != CAM_REQ_CMP) { 1700009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1701009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to create path"); 1702009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1703009ea47eSEdward Tomasz Napierala return (ENOMEM); 1704009ea47eSEdward Tomasz Napierala } 1705009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1706009ea47eSEdward Tomasz Napierala } 1707009ea47eSEdward Tomasz Napierala 1708009ea47eSEdward Tomasz Napierala return (0); 1709009ea47eSEdward Tomasz Napierala } 1710009ea47eSEdward Tomasz Napierala 1711009ea47eSEdward Tomasz Napierala static int 1712009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_fail(struct iscsi_softc *sc, 1713009ea47eSEdward Tomasz Napierala struct iscsi_daemon_fail *fail) 1714009ea47eSEdward Tomasz Napierala { 1715009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1716009ea47eSEdward Tomasz Napierala 1717009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1718009ea47eSEdward Tomasz Napierala 1719009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1720009ea47eSEdward Tomasz Napierala if (is->is_id == fail->idf_session_id) 1721009ea47eSEdward Tomasz Napierala break; 1722009ea47eSEdward Tomasz Napierala } 1723009ea47eSEdward Tomasz Napierala if (is == NULL) { 1724009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1725009ea47eSEdward Tomasz Napierala return (ESRCH); 1726009ea47eSEdward Tomasz Napierala } 1727009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1728009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "iscsid(8) failed: %s", 1729009ea47eSEdward Tomasz Napierala fail->idf_reason); 1730009ea47eSEdward Tomasz Napierala strlcpy(is->is_reason, fail->idf_reason, sizeof(is->is_reason)); 1731009ea47eSEdward Tomasz Napierala //is->is_waiting_for_iscsid = false; 1732009ea47eSEdward Tomasz Napierala //is->is_login_phase = true; 1733009ea47eSEdward Tomasz Napierala //iscsi_session_reconnect(is); 1734009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1735009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1736009ea47eSEdward Tomasz Napierala 1737009ea47eSEdward Tomasz Napierala return (0); 1738009ea47eSEdward Tomasz Napierala } 1739009ea47eSEdward Tomasz Napierala 1740009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 1741009ea47eSEdward Tomasz Napierala static int 1742009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_connect(struct iscsi_softc *sc, 1743009ea47eSEdward Tomasz Napierala struct iscsi_daemon_connect *idc) 1744009ea47eSEdward Tomasz Napierala { 1745009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1746009ea47eSEdward Tomasz Napierala struct sockaddr *from_sa, *to_sa; 1747009ea47eSEdward Tomasz Napierala int error; 1748009ea47eSEdward Tomasz Napierala 1749009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1750009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1751009ea47eSEdward Tomasz Napierala if (is->is_id == idc->idc_session_id) 1752009ea47eSEdward Tomasz Napierala break; 1753009ea47eSEdward Tomasz Napierala } 1754009ea47eSEdward Tomasz Napierala if (is == NULL) { 1755009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1756009ea47eSEdward Tomasz Napierala return (ESRCH); 1757009ea47eSEdward Tomasz Napierala } 1758009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1759009ea47eSEdward Tomasz Napierala 1760009ea47eSEdward Tomasz Napierala if (idc->idc_from_addrlen > 0) { 1761009ea47eSEdward Tomasz Napierala error = getsockaddr(&from_sa, (void *)idc->idc_from_addr, idc->idc_from_addrlen); 176257a4f20bSEdward Tomasz Napierala if (error != 0) { 176357a4f20bSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, 176457a4f20bSEdward Tomasz Napierala "getsockaddr failed with error %d", error); 1765009ea47eSEdward Tomasz Napierala return (error); 176657a4f20bSEdward Tomasz Napierala } 1767009ea47eSEdward Tomasz Napierala } else { 1768009ea47eSEdward Tomasz Napierala from_sa = NULL; 1769009ea47eSEdward Tomasz Napierala } 1770009ea47eSEdward Tomasz Napierala error = getsockaddr(&to_sa, (void *)idc->idc_to_addr, idc->idc_to_addrlen); 1771009ea47eSEdward Tomasz Napierala if (error != 0) { 177257a4f20bSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "getsockaddr failed with error %d", 177357a4f20bSEdward Tomasz Napierala error); 1774009ea47eSEdward Tomasz Napierala free(from_sa, M_SONAME); 1775009ea47eSEdward Tomasz Napierala return (error); 1776009ea47eSEdward Tomasz Napierala } 1777009ea47eSEdward Tomasz Napierala 1778009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1779a3fd63f2SEdward Tomasz Napierala is->is_statsn = 0; 1780a3fd63f2SEdward Tomasz Napierala is->is_cmdsn = 0; 1781a3fd63f2SEdward Tomasz Napierala is->is_expcmdsn = 0; 1782a3fd63f2SEdward Tomasz Napierala is->is_maxcmdsn = 0; 1783009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = false; 1784009ea47eSEdward Tomasz Napierala is->is_login_phase = true; 1785009ea47eSEdward Tomasz Napierala is->is_timeout = 0; 1786009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1787009ea47eSEdward Tomasz Napierala 1788f41492b0SEdward Tomasz Napierala error = icl_conn_connect(is->is_conn, idc->idc_domain, 1789009ea47eSEdward Tomasz Napierala idc->idc_socktype, idc->idc_protocol, from_sa, to_sa); 1790009ea47eSEdward Tomasz Napierala free(from_sa, M_SONAME); 1791009ea47eSEdward Tomasz Napierala free(to_sa, M_SONAME); 1792009ea47eSEdward Tomasz Napierala 1793009ea47eSEdward Tomasz Napierala /* 1794009ea47eSEdward Tomasz Napierala * Digests are always disabled during login phase. 1795009ea47eSEdward Tomasz Napierala */ 1796009ea47eSEdward Tomasz Napierala is->is_conn->ic_header_crc32c = false; 1797009ea47eSEdward Tomasz Napierala is->is_conn->ic_data_crc32c = false; 1798009ea47eSEdward Tomasz Napierala 1799009ea47eSEdward Tomasz Napierala return (error); 1800009ea47eSEdward Tomasz Napierala } 1801009ea47eSEdward Tomasz Napierala 1802009ea47eSEdward Tomasz Napierala static int 1803009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_send(struct iscsi_softc *sc, 1804009ea47eSEdward Tomasz Napierala struct iscsi_daemon_send *ids) 1805009ea47eSEdward Tomasz Napierala { 1806009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1807009ea47eSEdward Tomasz Napierala struct icl_pdu *ip; 1808009ea47eSEdward Tomasz Napierala size_t datalen; 1809009ea47eSEdward Tomasz Napierala void *data; 1810009ea47eSEdward Tomasz Napierala int error; 1811009ea47eSEdward Tomasz Napierala 1812009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1813009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1814009ea47eSEdward Tomasz Napierala if (is->is_id == ids->ids_session_id) 1815009ea47eSEdward Tomasz Napierala break; 1816009ea47eSEdward Tomasz Napierala } 1817009ea47eSEdward Tomasz Napierala if (is == NULL) { 1818009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1819009ea47eSEdward Tomasz Napierala return (ESRCH); 1820009ea47eSEdward Tomasz Napierala } 1821009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1822009ea47eSEdward Tomasz Napierala 1823009ea47eSEdward Tomasz Napierala if (is->is_login_phase == false) 1824009ea47eSEdward Tomasz Napierala return (EBUSY); 1825009ea47eSEdward Tomasz Napierala 1826009ea47eSEdward Tomasz Napierala if (is->is_terminating || is->is_reconnecting) 1827009ea47eSEdward Tomasz Napierala return (EIO); 1828009ea47eSEdward Tomasz Napierala 1829009ea47eSEdward Tomasz Napierala datalen = ids->ids_data_segment_len; 18300cc7d64aSJohn Baldwin if (datalen > is->is_conn->ic_max_send_data_segment_length) 1831009ea47eSEdward Tomasz Napierala return (EINVAL); 1832009ea47eSEdward Tomasz Napierala if (datalen > 0) { 1833009ea47eSEdward Tomasz Napierala data = malloc(datalen, M_ISCSI, M_WAITOK); 1834009ea47eSEdward Tomasz Napierala error = copyin(ids->ids_data_segment, data, datalen); 1835009ea47eSEdward Tomasz Napierala if (error != 0) { 1836009ea47eSEdward Tomasz Napierala free(data, M_ISCSI); 1837009ea47eSEdward Tomasz Napierala return (error); 1838009ea47eSEdward Tomasz Napierala } 1839009ea47eSEdward Tomasz Napierala } 1840009ea47eSEdward Tomasz Napierala 1841d2d52b00SEdward Tomasz Napierala ip = icl_pdu_new(is->is_conn, M_WAITOK); 1842009ea47eSEdward Tomasz Napierala memcpy(ip->ip_bhs, ids->ids_bhs, sizeof(*ip->ip_bhs)); 1843009ea47eSEdward Tomasz Napierala if (datalen > 0) { 1844009ea47eSEdward Tomasz Napierala error = icl_pdu_append_data(ip, data, datalen, M_WAITOK); 1845009ea47eSEdward Tomasz Napierala KASSERT(error == 0, ("icl_pdu_append_data(..., M_WAITOK) failed")); 1846009ea47eSEdward Tomasz Napierala free(data, M_ISCSI); 1847009ea47eSEdward Tomasz Napierala } 1848d66a906bSEdward Tomasz Napierala iscsi_pdu_queue(ip); 1849009ea47eSEdward Tomasz Napierala 1850009ea47eSEdward Tomasz Napierala return (0); 1851009ea47eSEdward Tomasz Napierala } 1852009ea47eSEdward Tomasz Napierala 1853009ea47eSEdward Tomasz Napierala static int 1854009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_receive(struct iscsi_softc *sc, 1855009ea47eSEdward Tomasz Napierala struct iscsi_daemon_receive *idr) 1856009ea47eSEdward Tomasz Napierala { 1857009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1858009ea47eSEdward Tomasz Napierala struct icl_pdu *ip; 1859009ea47eSEdward Tomasz Napierala void *data; 18602f0586b2SEdward Tomasz Napierala int error; 1861009ea47eSEdward Tomasz Napierala 1862009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1863009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1864009ea47eSEdward Tomasz Napierala if (is->is_id == idr->idr_session_id) 1865009ea47eSEdward Tomasz Napierala break; 1866009ea47eSEdward Tomasz Napierala } 1867009ea47eSEdward Tomasz Napierala if (is == NULL) { 1868009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1869009ea47eSEdward Tomasz Napierala return (ESRCH); 1870009ea47eSEdward Tomasz Napierala } 1871009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1872009ea47eSEdward Tomasz Napierala 1873009ea47eSEdward Tomasz Napierala if (is->is_login_phase == false) 1874009ea47eSEdward Tomasz Napierala return (EBUSY); 1875009ea47eSEdward Tomasz Napierala 1876009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1877009ea47eSEdward Tomasz Napierala while (is->is_login_pdu == NULL && 1878009ea47eSEdward Tomasz Napierala is->is_terminating == false && 18792f0586b2SEdward Tomasz Napierala is->is_reconnecting == false) { 18802f0586b2SEdward Tomasz Napierala error = cv_wait_sig(&is->is_login_cv, &is->is_lock); 18812f0586b2SEdward Tomasz Napierala if (error != 0) { 18822f0586b2SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 18832f0586b2SEdward Tomasz Napierala return (error); 18842f0586b2SEdward Tomasz Napierala } 18852f0586b2SEdward Tomasz Napierala } 1886009ea47eSEdward Tomasz Napierala if (is->is_terminating || is->is_reconnecting) { 1887009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1888009ea47eSEdward Tomasz Napierala return (EIO); 1889009ea47eSEdward Tomasz Napierala } 1890009ea47eSEdward Tomasz Napierala ip = is->is_login_pdu; 1891009ea47eSEdward Tomasz Napierala is->is_login_pdu = NULL; 1892009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1893009ea47eSEdward Tomasz Napierala 1894009ea47eSEdward Tomasz Napierala if (ip->ip_data_len > idr->idr_data_segment_len) { 1895009ea47eSEdward Tomasz Napierala icl_pdu_free(ip); 1896009ea47eSEdward Tomasz Napierala return (EMSGSIZE); 1897009ea47eSEdward Tomasz Napierala } 1898009ea47eSEdward Tomasz Napierala 1899009ea47eSEdward Tomasz Napierala copyout(ip->ip_bhs, idr->idr_bhs, sizeof(*ip->ip_bhs)); 1900009ea47eSEdward Tomasz Napierala if (ip->ip_data_len > 0) { 1901009ea47eSEdward Tomasz Napierala data = malloc(ip->ip_data_len, M_ISCSI, M_WAITOK); 1902009ea47eSEdward Tomasz Napierala icl_pdu_get_data(ip, 0, data, ip->ip_data_len); 1903009ea47eSEdward Tomasz Napierala copyout(data, idr->idr_data_segment, ip->ip_data_len); 1904009ea47eSEdward Tomasz Napierala free(data, M_ISCSI); 1905009ea47eSEdward Tomasz Napierala } 1906009ea47eSEdward Tomasz Napierala 1907009ea47eSEdward Tomasz Napierala icl_pdu_free(ip); 1908009ea47eSEdward Tomasz Napierala 1909009ea47eSEdward Tomasz Napierala return (0); 1910009ea47eSEdward Tomasz Napierala } 1911009ea47eSEdward Tomasz Napierala #endif /* ICL_KERNEL_PROXY */ 1912009ea47eSEdward Tomasz Napierala 1913009ea47eSEdward Tomasz Napierala static void 1914009ea47eSEdward Tomasz Napierala iscsi_sanitize_session_conf(struct iscsi_session_conf *isc) 1915009ea47eSEdward Tomasz Napierala { 1916009ea47eSEdward Tomasz Napierala /* 1917009ea47eSEdward Tomasz Napierala * Just make sure all the fields are null-terminated. 1918009ea47eSEdward Tomasz Napierala * 1919009ea47eSEdward Tomasz Napierala * XXX: This is not particularly secure. We should 1920009ea47eSEdward Tomasz Napierala * create our own conf and then copy in relevant 1921009ea47eSEdward Tomasz Napierala * fields. 1922009ea47eSEdward Tomasz Napierala */ 1923009ea47eSEdward Tomasz Napierala isc->isc_initiator[ISCSI_NAME_LEN - 1] = '\0'; 1924009ea47eSEdward Tomasz Napierala isc->isc_initiator_addr[ISCSI_ADDR_LEN - 1] = '\0'; 1925009ea47eSEdward Tomasz Napierala isc->isc_initiator_alias[ISCSI_ALIAS_LEN - 1] = '\0'; 1926009ea47eSEdward Tomasz Napierala isc->isc_target[ISCSI_NAME_LEN - 1] = '\0'; 1927009ea47eSEdward Tomasz Napierala isc->isc_target_addr[ISCSI_ADDR_LEN - 1] = '\0'; 1928009ea47eSEdward Tomasz Napierala isc->isc_user[ISCSI_NAME_LEN - 1] = '\0'; 1929009ea47eSEdward Tomasz Napierala isc->isc_secret[ISCSI_SECRET_LEN - 1] = '\0'; 1930009ea47eSEdward Tomasz Napierala isc->isc_mutual_user[ISCSI_NAME_LEN - 1] = '\0'; 1931009ea47eSEdward Tomasz Napierala isc->isc_mutual_secret[ISCSI_SECRET_LEN - 1] = '\0'; 1932009ea47eSEdward Tomasz Napierala } 1933009ea47eSEdward Tomasz Napierala 193451be90b5SEdward Tomasz Napierala static bool 193551be90b5SEdward Tomasz Napierala iscsi_valid_session_conf(const struct iscsi_session_conf *isc) 193651be90b5SEdward Tomasz Napierala { 193751be90b5SEdward Tomasz Napierala 193851be90b5SEdward Tomasz Napierala if (isc->isc_initiator[0] == '\0') { 193951be90b5SEdward Tomasz Napierala ISCSI_DEBUG("empty isc_initiator"); 194051be90b5SEdward Tomasz Napierala return (false); 194151be90b5SEdward Tomasz Napierala } 194251be90b5SEdward Tomasz Napierala 194351be90b5SEdward Tomasz Napierala if (isc->isc_target_addr[0] == '\0') { 194451be90b5SEdward Tomasz Napierala ISCSI_DEBUG("empty isc_target_addr"); 194551be90b5SEdward Tomasz Napierala return (false); 194651be90b5SEdward Tomasz Napierala } 194751be90b5SEdward Tomasz Napierala 194851be90b5SEdward Tomasz Napierala if (isc->isc_discovery != 0 && isc->isc_target[0] != 0) { 194951be90b5SEdward Tomasz Napierala ISCSI_DEBUG("non-empty isc_target for discovery session"); 195051be90b5SEdward Tomasz Napierala return (false); 195151be90b5SEdward Tomasz Napierala } 195251be90b5SEdward Tomasz Napierala 195351be90b5SEdward Tomasz Napierala if (isc->isc_discovery == 0 && isc->isc_target[0] == 0) { 195451be90b5SEdward Tomasz Napierala ISCSI_DEBUG("empty isc_target for non-discovery session"); 195551be90b5SEdward Tomasz Napierala return (false); 195651be90b5SEdward Tomasz Napierala } 195751be90b5SEdward Tomasz Napierala 195851be90b5SEdward Tomasz Napierala return (true); 195951be90b5SEdward Tomasz Napierala } 196051be90b5SEdward Tomasz Napierala 1961009ea47eSEdward Tomasz Napierala static int 1962009ea47eSEdward Tomasz Napierala iscsi_ioctl_session_add(struct iscsi_softc *sc, struct iscsi_session_add *isa) 1963009ea47eSEdward Tomasz Napierala { 1964009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1965009ea47eSEdward Tomasz Napierala const struct iscsi_session *is2; 1966009ea47eSEdward Tomasz Napierala int error; 1967972a7d95SRichard Scheffenegger sbintime_t sbt, pr; 1968009ea47eSEdward Tomasz Napierala 1969009ea47eSEdward Tomasz Napierala iscsi_sanitize_session_conf(&isa->isa_conf); 197051be90b5SEdward Tomasz Napierala if (iscsi_valid_session_conf(&isa->isa_conf) == false) 197151be90b5SEdward Tomasz Napierala return (EINVAL); 1972009ea47eSEdward Tomasz Napierala 1973009ea47eSEdward Tomasz Napierala is = malloc(sizeof(*is), M_ISCSI, M_ZERO | M_WAITOK); 1974009ea47eSEdward Tomasz Napierala memcpy(&is->is_conf, &isa->isa_conf, sizeof(is->is_conf)); 1975009ea47eSEdward Tomasz Napierala 1976009ea47eSEdward Tomasz Napierala sx_xlock(&sc->sc_lock); 1977009ea47eSEdward Tomasz Napierala 1978009ea47eSEdward Tomasz Napierala /* 1979009ea47eSEdward Tomasz Napierala * Prevent duplicates. 1980009ea47eSEdward Tomasz Napierala */ 1981009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is2, &sc->sc_sessions, is_next) { 19827843bd03SEdward Tomasz Napierala if (!!is->is_conf.isc_discovery != 19837843bd03SEdward Tomasz Napierala !!is2->is_conf.isc_discovery) 19847843bd03SEdward Tomasz Napierala continue; 19857843bd03SEdward Tomasz Napierala 19867843bd03SEdward Tomasz Napierala if (strcmp(is->is_conf.isc_target_addr, 19877843bd03SEdward Tomasz Napierala is2->is_conf.isc_target_addr) != 0) 19887843bd03SEdward Tomasz Napierala continue; 19897843bd03SEdward Tomasz Napierala 19907843bd03SEdward Tomasz Napierala if (is->is_conf.isc_discovery == 0 && 19917843bd03SEdward Tomasz Napierala strcmp(is->is_conf.isc_target, 19927843bd03SEdward Tomasz Napierala is2->is_conf.isc_target) != 0) 19937843bd03SEdward Tomasz Napierala continue; 19947843bd03SEdward Tomasz Napierala 1995009ea47eSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 19967843bd03SEdward Tomasz Napierala free(is, M_ISCSI); 1997009ea47eSEdward Tomasz Napierala return (EBUSY); 1998009ea47eSEdward Tomasz Napierala } 1999009ea47eSEdward Tomasz Napierala 200082babffbSEdward Tomasz Napierala is->is_conn = icl_new_conn(is->is_conf.isc_offload, 2001b8911594SEdward Tomasz Napierala is->is_conf.isc_iser, "iscsi", &is->is_lock); 200282babffbSEdward Tomasz Napierala if (is->is_conn == NULL) { 200382babffbSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 200482babffbSEdward Tomasz Napierala free(is, M_ISCSI); 200582babffbSEdward Tomasz Napierala return (EINVAL); 200682babffbSEdward Tomasz Napierala } 2007009ea47eSEdward Tomasz Napierala is->is_conn->ic_receive = iscsi_receive_callback; 2008009ea47eSEdward Tomasz Napierala is->is_conn->ic_error = iscsi_error_callback; 2009009ea47eSEdward Tomasz Napierala is->is_conn->ic_prv0 = is; 2010009ea47eSEdward Tomasz Napierala TAILQ_INIT(&is->is_outstanding); 201116c158a5SEdward Tomasz Napierala STAILQ_INIT(&is->is_postponed); 2012009ea47eSEdward Tomasz Napierala mtx_init(&is->is_lock, "iscsi_lock", NULL, MTX_DEF); 2013009ea47eSEdward Tomasz Napierala cv_init(&is->is_maintenance_cv, "iscsi_mt"); 2014009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 2015009ea47eSEdward Tomasz Napierala cv_init(&is->is_login_cv, "iscsi_login"); 2016009ea47eSEdward Tomasz Napierala #endif 2017009ea47eSEdward Tomasz Napierala 20180cc7d64aSJohn Baldwin /* 20190cc7d64aSJohn Baldwin * Set some default values, from RFC 3720, section 12. 20200cc7d64aSJohn Baldwin * 20210cc7d64aSJohn Baldwin * These values are updated by the handoff IOCTL, but are 20220cc7d64aSJohn Baldwin * needed prior to the handoff to support sending the ISER 20230cc7d64aSJohn Baldwin * login PDU. 20240cc7d64aSJohn Baldwin */ 20250cc7d64aSJohn Baldwin is->is_conn->ic_max_recv_data_segment_length = 8192; 20260cc7d64aSJohn Baldwin is->is_conn->ic_max_send_data_segment_length = 8192; 20270cc7d64aSJohn Baldwin is->is_max_burst_length = 262144; 20280cc7d64aSJohn Baldwin is->is_first_burst_length = 65536; 20290cc7d64aSJohn Baldwin 2030009ea47eSEdward Tomasz Napierala is->is_softc = sc; 2031009ea47eSEdward Tomasz Napierala sc->sc_last_session_id++; 2032009ea47eSEdward Tomasz Napierala is->is_id = sc->sc_last_session_id; 2033ffe82e05SAlexander Motin is->is_isid[0] = 0x80; /* RFC 3720, 10.12.5: 10b, "Random" ISID. */ 2034ffe82e05SAlexander Motin arc4rand(&is->is_isid[1], 5, 0); 2035ffe82e05SAlexander Motin is->is_tsih = 0; 2036009ea47eSEdward Tomasz Napierala callout_init(&is->is_callout, 1); 2037009ea47eSEdward Tomasz Napierala 2038009ea47eSEdward Tomasz Napierala error = kthread_add(iscsi_maintenance_thread, is, NULL, NULL, 0, 0, "iscsimt"); 2039009ea47eSEdward Tomasz Napierala if (error != 0) { 2040009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "kthread_add(9) failed with error %d", error); 204109f2b94bSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 2042009ea47eSEdward Tomasz Napierala return (error); 2043009ea47eSEdward Tomasz Napierala } 2044bd6bb493SRichard Scheffenegger is->is_ping_timeout = is->is_conf.isc_ping_timeout; 2045bd6bb493SRichard Scheffenegger if (is->is_ping_timeout < 0) 2046bd6bb493SRichard Scheffenegger is->is_ping_timeout = ping_timeout; 2047bd6bb493SRichard Scheffenegger is->is_login_timeout = is->is_conf.isc_login_timeout; 2048bd6bb493SRichard Scheffenegger if (is->is_login_timeout < 0) 2049bd6bb493SRichard Scheffenegger is->is_login_timeout = login_timeout; 2050009ea47eSEdward Tomasz Napierala 2051972a7d95SRichard Scheffenegger sbt = mstosbt(995); 2052972a7d95SRichard Scheffenegger pr = mstosbt(10); 2053972a7d95SRichard Scheffenegger callout_reset_sbt(&is->is_callout, sbt, pr, iscsi_callout, is, 0); 205409f2b94bSEdward Tomasz Napierala TAILQ_INSERT_TAIL(&sc->sc_sessions, is, is_next); 205509f2b94bSEdward Tomasz Napierala 20562be596adSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 2057ba165a31SEdward Tomasz Napierala /* 2058ba165a31SEdward Tomasz Napierala * Don't notify iscsid(8) if the session is disabled and it's not 2059ba165a31SEdward Tomasz Napierala * a discovery session, 2060ba165a31SEdward Tomasz Napierala */ 2061ba165a31SEdward Tomasz Napierala if (is->is_conf.isc_enable == 0 && is->is_conf.isc_discovery == 0) { 2062ba165a31SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 2063ba165a31SEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 2064ba165a31SEdward Tomasz Napierala return (0); 2065ba165a31SEdward Tomasz Napierala } 2066ba165a31SEdward Tomasz Napierala 2067009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = true; 2068009ea47eSEdward Tomasz Napierala strlcpy(is->is_reason, "Waiting for iscsid(8)", sizeof(is->is_reason)); 20692be596adSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 2070009ea47eSEdward Tomasz Napierala cv_signal(&sc->sc_cv); 2071009ea47eSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 2072009ea47eSEdward Tomasz Napierala return (0); 2073009ea47eSEdward Tomasz Napierala } 2074009ea47eSEdward Tomasz Napierala 2075009ea47eSEdward Tomasz Napierala static bool 2076009ea47eSEdward Tomasz Napierala iscsi_session_conf_matches(unsigned int id1, const struct iscsi_session_conf *c1, 2077009ea47eSEdward Tomasz Napierala unsigned int id2, const struct iscsi_session_conf *c2) 2078009ea47eSEdward Tomasz Napierala { 20796cc1e267SEdward Tomasz Napierala 20806cc1e267SEdward Tomasz Napierala if (id2 != 0 && id2 != id1) 2081009ea47eSEdward Tomasz Napierala return (false); 20826cc1e267SEdward Tomasz Napierala if (c2->isc_target[0] != '\0' && 20836cc1e267SEdward Tomasz Napierala strcmp(c1->isc_target, c2->isc_target) != 0) 20846cc1e267SEdward Tomasz Napierala return (false); 20856cc1e267SEdward Tomasz Napierala if (c2->isc_target_addr[0] != '\0' && 20866cc1e267SEdward Tomasz Napierala strcmp(c1->isc_target_addr, c2->isc_target_addr) != 0) 20876cc1e267SEdward Tomasz Napierala return (false); 20886cc1e267SEdward Tomasz Napierala return (true); 2089009ea47eSEdward Tomasz Napierala } 2090009ea47eSEdward Tomasz Napierala 2091009ea47eSEdward Tomasz Napierala static int 2092009ea47eSEdward Tomasz Napierala iscsi_ioctl_session_remove(struct iscsi_softc *sc, 2093009ea47eSEdward Tomasz Napierala struct iscsi_session_remove *isr) 2094009ea47eSEdward Tomasz Napierala { 2095009ea47eSEdward Tomasz Napierala struct iscsi_session *is, *tmp; 2096009ea47eSEdward Tomasz Napierala bool found = false; 2097009ea47eSEdward Tomasz Napierala 2098009ea47eSEdward Tomasz Napierala iscsi_sanitize_session_conf(&isr->isr_conf); 2099009ea47eSEdward Tomasz Napierala 2100009ea47eSEdward Tomasz Napierala sx_xlock(&sc->sc_lock); 2101009ea47eSEdward Tomasz Napierala TAILQ_FOREACH_SAFE(is, &sc->sc_sessions, is_next, tmp) { 2102009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 2103009ea47eSEdward Tomasz Napierala if (iscsi_session_conf_matches(is->is_id, &is->is_conf, 2104009ea47eSEdward Tomasz Napierala isr->isr_session_id, &isr->isr_conf)) { 2105009ea47eSEdward Tomasz Napierala found = true; 2106009ea47eSEdward Tomasz Napierala iscsi_session_logout(is); 2107009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 2108009ea47eSEdward Tomasz Napierala } 2109009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 2110009ea47eSEdward Tomasz Napierala } 2111009ea47eSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 2112009ea47eSEdward Tomasz Napierala 2113009ea47eSEdward Tomasz Napierala if (!found) 2114009ea47eSEdward Tomasz Napierala return (ESRCH); 2115009ea47eSEdward Tomasz Napierala 2116009ea47eSEdward Tomasz Napierala return (0); 2117009ea47eSEdward Tomasz Napierala } 2118009ea47eSEdward Tomasz Napierala 2119009ea47eSEdward Tomasz Napierala static int 2120009ea47eSEdward Tomasz Napierala iscsi_ioctl_session_list(struct iscsi_softc *sc, struct iscsi_session_list *isl) 2121009ea47eSEdward Tomasz Napierala { 2122009ea47eSEdward Tomasz Napierala int error; 2123009ea47eSEdward Tomasz Napierala unsigned int i = 0; 2124009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 2125009ea47eSEdward Tomasz Napierala struct iscsi_session_state iss; 2126009ea47eSEdward Tomasz Napierala 2127009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 2128009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 2129009ea47eSEdward Tomasz Napierala if (i >= isl->isl_nentries) { 2130009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 2131009ea47eSEdward Tomasz Napierala return (EMSGSIZE); 2132009ea47eSEdward Tomasz Napierala } 2133009ea47eSEdward Tomasz Napierala memset(&iss, 0, sizeof(iss)); 2134009ea47eSEdward Tomasz Napierala memcpy(&iss.iss_conf, &is->is_conf, sizeof(iss.iss_conf)); 2135009ea47eSEdward Tomasz Napierala iss.iss_id = is->is_id; 2136009ea47eSEdward Tomasz Napierala strlcpy(iss.iss_target_alias, is->is_target_alias, sizeof(iss.iss_target_alias)); 2137009ea47eSEdward Tomasz Napierala strlcpy(iss.iss_reason, is->is_reason, sizeof(iss.iss_reason)); 213882babffbSEdward Tomasz Napierala strlcpy(iss.iss_offload, is->is_conn->ic_offload, sizeof(iss.iss_offload)); 2139009ea47eSEdward Tomasz Napierala 2140009ea47eSEdward Tomasz Napierala if (is->is_conn->ic_header_crc32c) 2141009ea47eSEdward Tomasz Napierala iss.iss_header_digest = ISCSI_DIGEST_CRC32C; 2142009ea47eSEdward Tomasz Napierala else 2143009ea47eSEdward Tomasz Napierala iss.iss_header_digest = ISCSI_DIGEST_NONE; 2144009ea47eSEdward Tomasz Napierala 2145009ea47eSEdward Tomasz Napierala if (is->is_conn->ic_data_crc32c) 2146009ea47eSEdward Tomasz Napierala iss.iss_data_digest = ISCSI_DIGEST_CRC32C; 2147009ea47eSEdward Tomasz Napierala else 2148009ea47eSEdward Tomasz Napierala iss.iss_data_digest = ISCSI_DIGEST_NONE; 2149009ea47eSEdward Tomasz Napierala 215097b84d34SNavdeep Parhar iss.iss_max_send_data_segment_length = 21510cc7d64aSJohn Baldwin is->is_conn->ic_max_send_data_segment_length; 215297b84d34SNavdeep Parhar iss.iss_max_recv_data_segment_length = 21530cc7d64aSJohn Baldwin is->is_conn->ic_max_recv_data_segment_length; 21544e5408f1SEdward Tomasz Napierala iss.iss_max_burst_length = is->is_max_burst_length; 21554e5408f1SEdward Tomasz Napierala iss.iss_first_burst_length = is->is_first_burst_length; 2156009ea47eSEdward Tomasz Napierala iss.iss_immediate_data = is->is_immediate_data; 2157009ea47eSEdward Tomasz Napierala iss.iss_connected = is->is_connected; 2158009ea47eSEdward Tomasz Napierala 2159009ea47eSEdward Tomasz Napierala error = copyout(&iss, isl->isl_pstates + i, sizeof(iss)); 2160009ea47eSEdward Tomasz Napierala if (error != 0) { 2161009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 2162009ea47eSEdward Tomasz Napierala return (error); 2163009ea47eSEdward Tomasz Napierala } 2164009ea47eSEdward Tomasz Napierala i++; 2165009ea47eSEdward Tomasz Napierala } 2166009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 2167009ea47eSEdward Tomasz Napierala 2168009ea47eSEdward Tomasz Napierala isl->isl_nentries = i; 2169009ea47eSEdward Tomasz Napierala 2170009ea47eSEdward Tomasz Napierala return (0); 2171009ea47eSEdward Tomasz Napierala } 2172009ea47eSEdward Tomasz Napierala 2173009ea47eSEdward Tomasz Napierala static int 217451be90b5SEdward Tomasz Napierala iscsi_ioctl_session_modify(struct iscsi_softc *sc, 217551be90b5SEdward Tomasz Napierala struct iscsi_session_modify *ism) 217651be90b5SEdward Tomasz Napierala { 217751be90b5SEdward Tomasz Napierala struct iscsi_session *is; 21788ff2372aSEdward Tomasz Napierala const struct iscsi_session *is2; 217951be90b5SEdward Tomasz Napierala 218051be90b5SEdward Tomasz Napierala iscsi_sanitize_session_conf(&ism->ism_conf); 218151be90b5SEdward Tomasz Napierala if (iscsi_valid_session_conf(&ism->ism_conf) == false) 218251be90b5SEdward Tomasz Napierala return (EINVAL); 218351be90b5SEdward Tomasz Napierala 218451be90b5SEdward Tomasz Napierala sx_xlock(&sc->sc_lock); 218551be90b5SEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 218651be90b5SEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 21878ff2372aSEdward Tomasz Napierala if (is->is_id == ism->ism_session_id) { 21888ff2372aSEdward Tomasz Napierala /* Note that the session remains locked. */ 218951be90b5SEdward Tomasz Napierala break; 21908ff2372aSEdward Tomasz Napierala } 219151be90b5SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 219251be90b5SEdward Tomasz Napierala } 219351be90b5SEdward Tomasz Napierala if (is == NULL) { 219451be90b5SEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 219551be90b5SEdward Tomasz Napierala return (ESRCH); 219651be90b5SEdward Tomasz Napierala } 21978ff2372aSEdward Tomasz Napierala 21988ff2372aSEdward Tomasz Napierala /* 21998ff2372aSEdward Tomasz Napierala * Prevent duplicates. 22008ff2372aSEdward Tomasz Napierala */ 22018ff2372aSEdward Tomasz Napierala TAILQ_FOREACH(is2, &sc->sc_sessions, is_next) { 22028ff2372aSEdward Tomasz Napierala if (is == is2) 22038ff2372aSEdward Tomasz Napierala continue; 22048ff2372aSEdward Tomasz Napierala 22058ff2372aSEdward Tomasz Napierala if (!!ism->ism_conf.isc_discovery != 22068ff2372aSEdward Tomasz Napierala !!is2->is_conf.isc_discovery) 22078ff2372aSEdward Tomasz Napierala continue; 22088ff2372aSEdward Tomasz Napierala 22098ff2372aSEdward Tomasz Napierala if (strcmp(ism->ism_conf.isc_target_addr, 22108ff2372aSEdward Tomasz Napierala is2->is_conf.isc_target_addr) != 0) 22118ff2372aSEdward Tomasz Napierala continue; 22128ff2372aSEdward Tomasz Napierala 22138ff2372aSEdward Tomasz Napierala if (ism->ism_conf.isc_discovery == 0 && 22148ff2372aSEdward Tomasz Napierala strcmp(ism->ism_conf.isc_target, 22158ff2372aSEdward Tomasz Napierala is2->is_conf.isc_target) != 0) 22168ff2372aSEdward Tomasz Napierala continue; 22178ff2372aSEdward Tomasz Napierala 22188ff2372aSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 22198ff2372aSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 22208ff2372aSEdward Tomasz Napierala return (EBUSY); 22218ff2372aSEdward Tomasz Napierala } 22228ff2372aSEdward Tomasz Napierala 222351be90b5SEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 222451be90b5SEdward Tomasz Napierala 222551be90b5SEdward Tomasz Napierala memcpy(&is->is_conf, &ism->ism_conf, sizeof(is->is_conf)); 222651be90b5SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 222751be90b5SEdward Tomasz Napierala 222851be90b5SEdward Tomasz Napierala iscsi_session_reconnect(is); 222951be90b5SEdward Tomasz Napierala 223051be90b5SEdward Tomasz Napierala return (0); 223151be90b5SEdward Tomasz Napierala } 223251be90b5SEdward Tomasz Napierala 223351be90b5SEdward Tomasz Napierala static int 2234009ea47eSEdward Tomasz Napierala iscsi_ioctl(struct cdev *dev, u_long cmd, caddr_t arg, int mode, 2235009ea47eSEdward Tomasz Napierala struct thread *td) 2236009ea47eSEdward Tomasz Napierala { 2237009ea47eSEdward Tomasz Napierala struct iscsi_softc *sc; 2238009ea47eSEdward Tomasz Napierala 2239009ea47eSEdward Tomasz Napierala sc = dev->si_drv1; 2240009ea47eSEdward Tomasz Napierala 2241009ea47eSEdward Tomasz Napierala switch (cmd) { 2242009ea47eSEdward Tomasz Napierala case ISCSIDWAIT: 2243009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_wait(sc, 22447b02c1e8SJohn Baldwin (struct iscsi_daemon_request *)arg, false)); 22457b02c1e8SJohn Baldwin #ifdef COMPAT_FREEBSD13 22467b02c1e8SJohn Baldwin case ISCSIDWAIT13: 22477b02c1e8SJohn Baldwin return (iscsi_ioctl_daemon_wait(sc, 22487b02c1e8SJohn Baldwin (struct iscsi_daemon_request *)arg, true)); 22497b02c1e8SJohn Baldwin #endif 22507b02c1e8SJohn Baldwin case ISCSIDLIMITS: 22517b02c1e8SJohn Baldwin return (iscsi_ioctl_daemon_limits(sc, 22527b02c1e8SJohn Baldwin (struct iscsi_daemon_limits *)arg)); 2253009ea47eSEdward Tomasz Napierala case ISCSIDHANDOFF: 2254009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_handoff(sc, 2255009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_handoff *)arg)); 2256009ea47eSEdward Tomasz Napierala case ISCSIDFAIL: 2257009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_fail(sc, 2258009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_fail *)arg)); 2259009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 2260009ea47eSEdward Tomasz Napierala case ISCSIDCONNECT: 2261009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_connect(sc, 2262009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_connect *)arg)); 2263009ea47eSEdward Tomasz Napierala case ISCSIDSEND: 2264009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_send(sc, 2265009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_send *)arg)); 2266009ea47eSEdward Tomasz Napierala case ISCSIDRECEIVE: 2267009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_receive(sc, 2268009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_receive *)arg)); 2269009ea47eSEdward Tomasz Napierala #endif /* ICL_KERNEL_PROXY */ 2270009ea47eSEdward Tomasz Napierala case ISCSISADD: 2271009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_session_add(sc, 2272009ea47eSEdward Tomasz Napierala (struct iscsi_session_add *)arg)); 2273009ea47eSEdward Tomasz Napierala case ISCSISREMOVE: 2274009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_session_remove(sc, 2275009ea47eSEdward Tomasz Napierala (struct iscsi_session_remove *)arg)); 2276009ea47eSEdward Tomasz Napierala case ISCSISLIST: 2277009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_session_list(sc, 2278009ea47eSEdward Tomasz Napierala (struct iscsi_session_list *)arg)); 227951be90b5SEdward Tomasz Napierala case ISCSISMODIFY: 228051be90b5SEdward Tomasz Napierala return (iscsi_ioctl_session_modify(sc, 228151be90b5SEdward Tomasz Napierala (struct iscsi_session_modify *)arg)); 2282009ea47eSEdward Tomasz Napierala default: 2283009ea47eSEdward Tomasz Napierala return (EINVAL); 2284009ea47eSEdward Tomasz Napierala } 2285009ea47eSEdward Tomasz Napierala } 2286009ea47eSEdward Tomasz Napierala 2287009ea47eSEdward Tomasz Napierala static struct iscsi_outstanding * 2288009ea47eSEdward Tomasz Napierala iscsi_outstanding_find(struct iscsi_session *is, uint32_t initiator_task_tag) 2289009ea47eSEdward Tomasz Napierala { 2290009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io; 2291009ea47eSEdward Tomasz Napierala 2292009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 2293009ea47eSEdward Tomasz Napierala 2294009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(io, &is->is_outstanding, io_next) { 2295009ea47eSEdward Tomasz Napierala if (io->io_initiator_task_tag == initiator_task_tag) 2296009ea47eSEdward Tomasz Napierala return (io); 2297009ea47eSEdward Tomasz Napierala } 2298009ea47eSEdward Tomasz Napierala return (NULL); 2299009ea47eSEdward Tomasz Napierala } 2300009ea47eSEdward Tomasz Napierala 2301aa75114cSAlexander Motin static struct iscsi_outstanding * 2302aa75114cSAlexander Motin iscsi_outstanding_find_ccb(struct iscsi_session *is, union ccb *ccb) 2303aa75114cSAlexander Motin { 2304aa75114cSAlexander Motin struct iscsi_outstanding *io; 2305aa75114cSAlexander Motin 2306aa75114cSAlexander Motin ISCSI_SESSION_LOCK_ASSERT(is); 2307aa75114cSAlexander Motin 2308aa75114cSAlexander Motin TAILQ_FOREACH(io, &is->is_outstanding, io_next) { 2309aa75114cSAlexander Motin if (io->io_ccb == ccb) 2310aa75114cSAlexander Motin return (io); 2311aa75114cSAlexander Motin } 2312aa75114cSAlexander Motin return (NULL); 2313aa75114cSAlexander Motin } 2314aa75114cSAlexander Motin 2315aa75114cSAlexander Motin static struct iscsi_outstanding * 2316604c023fSEdward Tomasz Napierala iscsi_outstanding_add(struct iscsi_session *is, struct icl_pdu *request, 23177a03d007SEdward Tomasz Napierala union ccb *ccb, uint32_t *initiator_task_tagp) 2318009ea47eSEdward Tomasz Napierala { 2319009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io; 23207a03d007SEdward Tomasz Napierala int error; 2321009ea47eSEdward Tomasz Napierala 2322009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 2323009ea47eSEdward Tomasz Napierala 2324009ea47eSEdward Tomasz Napierala io = uma_zalloc(iscsi_outstanding_zone, M_NOWAIT | M_ZERO); 2325009ea47eSEdward Tomasz Napierala if (io == NULL) { 23267a03d007SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate %zd bytes", 23277a03d007SEdward Tomasz Napierala sizeof(*io)); 2328aa75114cSAlexander Motin return (NULL); 2329009ea47eSEdward Tomasz Napierala } 23307a03d007SEdward Tomasz Napierala 2331604c023fSEdward Tomasz Napierala error = icl_conn_task_setup(is->is_conn, request, &ccb->csio, 23327a03d007SEdward Tomasz Napierala initiator_task_tagp, &io->io_icl_prv); 23337a03d007SEdward Tomasz Napierala if (error != 0) { 23347a03d007SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, 23357a03d007SEdward Tomasz Napierala "icl_conn_task_setup() failed with error %d", error); 23367a03d007SEdward Tomasz Napierala uma_zfree(iscsi_outstanding_zone, io); 23377a03d007SEdward Tomasz Napierala return (NULL); 23387a03d007SEdward Tomasz Napierala } 23397a03d007SEdward Tomasz Napierala 23407a03d007SEdward Tomasz Napierala KASSERT(iscsi_outstanding_find(is, *initiator_task_tagp) == NULL, 23417a03d007SEdward Tomasz Napierala ("initiator_task_tag 0x%x already added", *initiator_task_tagp)); 23427a03d007SEdward Tomasz Napierala 23437a03d007SEdward Tomasz Napierala io->io_initiator_task_tag = *initiator_task_tagp; 2344009ea47eSEdward Tomasz Napierala io->io_ccb = ccb; 2345009ea47eSEdward Tomasz Napierala TAILQ_INSERT_TAIL(&is->is_outstanding, io, io_next); 2346aa75114cSAlexander Motin return (io); 2347009ea47eSEdward Tomasz Napierala } 2348009ea47eSEdward Tomasz Napierala 2349009ea47eSEdward Tomasz Napierala static void 2350009ea47eSEdward Tomasz Napierala iscsi_outstanding_remove(struct iscsi_session *is, struct iscsi_outstanding *io) 2351009ea47eSEdward Tomasz Napierala { 2352009ea47eSEdward Tomasz Napierala 2353009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 2354009ea47eSEdward Tomasz Napierala 23557a03d007SEdward Tomasz Napierala icl_conn_task_done(is->is_conn, io->io_icl_prv); 2356009ea47eSEdward Tomasz Napierala TAILQ_REMOVE(&is->is_outstanding, io, io_next); 2357009ea47eSEdward Tomasz Napierala uma_zfree(iscsi_outstanding_zone, io); 2358009ea47eSEdward Tomasz Napierala } 2359009ea47eSEdward Tomasz Napierala 2360009ea47eSEdward Tomasz Napierala static void 2361aa75114cSAlexander Motin iscsi_action_abort(struct iscsi_session *is, union ccb *ccb) 2362aa75114cSAlexander Motin { 2363aa75114cSAlexander Motin struct icl_pdu *request; 2364aa75114cSAlexander Motin struct iscsi_bhs_task_management_request *bhstmr; 2365aa75114cSAlexander Motin struct ccb_abort *cab = &ccb->cab; 2366aa75114cSAlexander Motin struct iscsi_outstanding *io, *aio; 23677a03d007SEdward Tomasz Napierala uint32_t initiator_task_tag; 2368aa75114cSAlexander Motin 2369aa75114cSAlexander Motin ISCSI_SESSION_LOCK_ASSERT(is); 2370aa75114cSAlexander Motin 2371aa75114cSAlexander Motin #if 0 2372aa75114cSAlexander Motin KASSERT(is->is_login_phase == false, ("%s called during Login Phase", __func__)); 2373aa75114cSAlexander Motin #else 2374aa75114cSAlexander Motin if (is->is_login_phase) { 2375aa75114cSAlexander Motin ccb->ccb_h.status = CAM_REQ_ABORTED; 2376aa75114cSAlexander Motin xpt_done(ccb); 2377aa75114cSAlexander Motin return; 2378aa75114cSAlexander Motin } 2379aa75114cSAlexander Motin #endif 2380aa75114cSAlexander Motin 2381aa75114cSAlexander Motin aio = iscsi_outstanding_find_ccb(is, cab->abort_ccb); 2382aa75114cSAlexander Motin if (aio == NULL) { 2383aa75114cSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP; 2384aa75114cSAlexander Motin xpt_done(ccb); 2385aa75114cSAlexander Motin return; 2386aa75114cSAlexander Motin } 2387aa75114cSAlexander Motin 2388d2d52b00SEdward Tomasz Napierala request = icl_pdu_new(is->is_conn, M_NOWAIT); 2389aa75114cSAlexander Motin if (request == NULL) { 2390aa75114cSAlexander Motin ccb->ccb_h.status = CAM_RESRC_UNAVAIL; 2391aa75114cSAlexander Motin xpt_done(ccb); 2392aa75114cSAlexander Motin return; 2393aa75114cSAlexander Motin } 2394aa75114cSAlexander Motin 23957a03d007SEdward Tomasz Napierala initiator_task_tag = is->is_initiator_task_tag++; 23969bee9a98SAlexander Motin if (initiator_task_tag == 0xffffffff) 23979bee9a98SAlexander Motin initiator_task_tag = is->is_initiator_task_tag++; 2398aa75114cSAlexander Motin 2399604c023fSEdward Tomasz Napierala io = iscsi_outstanding_add(is, request, NULL, &initiator_task_tag); 2400aa75114cSAlexander Motin if (io == NULL) { 2401aa75114cSAlexander Motin icl_pdu_free(request); 2402aa75114cSAlexander Motin ccb->ccb_h.status = CAM_RESRC_UNAVAIL; 2403aa75114cSAlexander Motin xpt_done(ccb); 2404aa75114cSAlexander Motin return; 2405aa75114cSAlexander Motin } 24063dd2a7a5SAlexander Motin io->io_referenced_task_tag = aio->io_initiator_task_tag; 24077a03d007SEdward Tomasz Napierala 24087a03d007SEdward Tomasz Napierala bhstmr = (struct iscsi_bhs_task_management_request *)request->ip_bhs; 24097a03d007SEdward Tomasz Napierala bhstmr->bhstmr_opcode = ISCSI_BHS_OPCODE_TASK_REQUEST; 24107a03d007SEdward Tomasz Napierala bhstmr->bhstmr_function = 0x80 | BHSTMR_FUNCTION_ABORT_TASK; 24117a03d007SEdward Tomasz Napierala bhstmr->bhstmr_lun = htobe64(CAM_EXTLUN_BYTE_SWIZZLE(ccb->ccb_h.target_lun)); 24127a03d007SEdward Tomasz Napierala bhstmr->bhstmr_initiator_task_tag = initiator_task_tag; 24137a03d007SEdward Tomasz Napierala bhstmr->bhstmr_referenced_task_tag = aio->io_initiator_task_tag; 24147a03d007SEdward Tomasz Napierala 2415aa75114cSAlexander Motin iscsi_pdu_queue_locked(request); 2416aa75114cSAlexander Motin } 2417aa75114cSAlexander Motin 2418aa75114cSAlexander Motin static void 2419009ea47eSEdward Tomasz Napierala iscsi_action_scsiio(struct iscsi_session *is, union ccb *ccb) 2420009ea47eSEdward Tomasz Napierala { 2421009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 2422009ea47eSEdward Tomasz Napierala struct iscsi_bhs_scsi_command *bhssc; 2423009ea47eSEdward Tomasz Napierala struct ccb_scsiio *csio; 2424aa75114cSAlexander Motin struct iscsi_outstanding *io; 2425009ea47eSEdward Tomasz Napierala size_t len; 24267a03d007SEdward Tomasz Napierala uint32_t initiator_task_tag; 2427009ea47eSEdward Tomasz Napierala int error; 2428009ea47eSEdward Tomasz Napierala 2429009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 2430009ea47eSEdward Tomasz Napierala 2431009ea47eSEdward Tomasz Napierala #if 0 2432009ea47eSEdward Tomasz Napierala KASSERT(is->is_login_phase == false, ("%s called during Login Phase", __func__)); 2433009ea47eSEdward Tomasz Napierala #else 2434009ea47eSEdward Tomasz Napierala if (is->is_login_phase) { 2435009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "called during login phase"); 2436009ea47eSEdward Tomasz Napierala if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 2437009ea47eSEdward Tomasz Napierala xpt_freeze_devq(ccb->ccb_h.path, 1); 2438009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 2439009ea47eSEdward Tomasz Napierala } 2440009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_REQ_ABORTED | CAM_DEV_QFRZN; 2441009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2442009ea47eSEdward Tomasz Napierala return; 2443009ea47eSEdward Tomasz Napierala } 2444009ea47eSEdward Tomasz Napierala #endif 2445009ea47eSEdward Tomasz Napierala 2446d2d52b00SEdward Tomasz Napierala request = icl_pdu_new(is->is_conn, M_NOWAIT); 2447009ea47eSEdward Tomasz Napierala if (request == NULL) { 2448009ea47eSEdward Tomasz Napierala if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 2449009ea47eSEdward Tomasz Napierala xpt_freeze_devq(ccb->ccb_h.path, 1); 2450009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 2451009ea47eSEdward Tomasz Napierala } 2452009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_RESRC_UNAVAIL | CAM_DEV_QFRZN; 2453009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2454009ea47eSEdward Tomasz Napierala return; 2455009ea47eSEdward Tomasz Napierala } 2456009ea47eSEdward Tomasz Napierala 24577a03d007SEdward Tomasz Napierala initiator_task_tag = is->is_initiator_task_tag++; 24589bee9a98SAlexander Motin if (initiator_task_tag == 0xffffffff) 24599bee9a98SAlexander Motin initiator_task_tag = is->is_initiator_task_tag++; 24609bee9a98SAlexander Motin 2461604c023fSEdward Tomasz Napierala io = iscsi_outstanding_add(is, request, ccb, &initiator_task_tag); 24627a03d007SEdward Tomasz Napierala if (io == NULL) { 24637a03d007SEdward Tomasz Napierala icl_pdu_free(request); 24647a03d007SEdward Tomasz Napierala if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 24657a03d007SEdward Tomasz Napierala xpt_freeze_devq(ccb->ccb_h.path, 1); 24667a03d007SEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 24677a03d007SEdward Tomasz Napierala } 24687a03d007SEdward Tomasz Napierala ccb->ccb_h.status = CAM_RESRC_UNAVAIL | CAM_DEV_QFRZN; 24697a03d007SEdward Tomasz Napierala xpt_done(ccb); 24707a03d007SEdward Tomasz Napierala return; 24717a03d007SEdward Tomasz Napierala } 24727a03d007SEdward Tomasz Napierala 2473009ea47eSEdward Tomasz Napierala csio = &ccb->csio; 2474009ea47eSEdward Tomasz Napierala bhssc = (struct iscsi_bhs_scsi_command *)request->ip_bhs; 2475009ea47eSEdward Tomasz Napierala bhssc->bhssc_opcode = ISCSI_BHS_OPCODE_SCSI_COMMAND; 2476009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_F; 2477009ea47eSEdward Tomasz Napierala switch (csio->ccb_h.flags & CAM_DIR_MASK) { 2478009ea47eSEdward Tomasz Napierala case CAM_DIR_IN: 2479009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_R; 2480009ea47eSEdward Tomasz Napierala break; 2481009ea47eSEdward Tomasz Napierala case CAM_DIR_OUT: 2482009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_W; 2483009ea47eSEdward Tomasz Napierala break; 2484009ea47eSEdward Tomasz Napierala } 2485009ea47eSEdward Tomasz Napierala 2486462cf3baSAlexander Motin if ((ccb->ccb_h.flags & CAM_TAG_ACTION_VALID) != 0) { 2487009ea47eSEdward Tomasz Napierala switch (csio->tag_action) { 2488009ea47eSEdward Tomasz Napierala case MSG_HEAD_OF_Q_TAG: 2489009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_HOQ; 2490009ea47eSEdward Tomasz Napierala break; 2491009ea47eSEdward Tomasz Napierala case MSG_ORDERED_Q_TAG: 2492009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_ORDERED; 2493009ea47eSEdward Tomasz Napierala break; 2494009ea47eSEdward Tomasz Napierala case MSG_ACA_TASK: 2495009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_ACA; 2496009ea47eSEdward Tomasz Napierala break; 2497009ea47eSEdward Tomasz Napierala case MSG_SIMPLE_Q_TAG: 2498009ea47eSEdward Tomasz Napierala default: 2499009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_SIMPLE; 2500009ea47eSEdward Tomasz Napierala break; 2501009ea47eSEdward Tomasz Napierala } 2502462cf3baSAlexander Motin } else 2503462cf3baSAlexander Motin bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_UNTAGGED; 2504009ea47eSEdward Tomasz Napierala 250588364968SAlexander Motin if (is->is_protocol_level >= 2) { 250688364968SAlexander Motin bhssc->bhssc_pri = (csio->priority << BHSSC_PRI_SHIFT) & 250788364968SAlexander Motin BHSSC_PRI_MASK; 250888364968SAlexander Motin } 250988364968SAlexander Motin 2510a9f2f291SEdward Tomasz Napierala bhssc->bhssc_lun = htobe64(CAM_EXTLUN_BYTE_SWIZZLE(ccb->ccb_h.target_lun)); 25117a03d007SEdward Tomasz Napierala bhssc->bhssc_initiator_task_tag = initiator_task_tag; 2512009ea47eSEdward Tomasz Napierala bhssc->bhssc_expected_data_transfer_length = htonl(csio->dxfer_len); 2513009ea47eSEdward Tomasz Napierala KASSERT(csio->cdb_len <= sizeof(bhssc->bhssc_cdb), 2514009ea47eSEdward Tomasz Napierala ("unsupported CDB size %zd", (size_t)csio->cdb_len)); 2515009ea47eSEdward Tomasz Napierala 2516009ea47eSEdward Tomasz Napierala if (csio->ccb_h.flags & CAM_CDB_POINTER) 2517009ea47eSEdward Tomasz Napierala memcpy(&bhssc->bhssc_cdb, csio->cdb_io.cdb_ptr, csio->cdb_len); 2518009ea47eSEdward Tomasz Napierala else 2519009ea47eSEdward Tomasz Napierala memcpy(&bhssc->bhssc_cdb, csio->cdb_io.cdb_bytes, csio->cdb_len); 2520009ea47eSEdward Tomasz Napierala 2521009ea47eSEdward Tomasz Napierala if (is->is_immediate_data && 2522009ea47eSEdward Tomasz Napierala (csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT) { 2523009ea47eSEdward Tomasz Napierala len = csio->dxfer_len; 2524009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "adding %zd of immediate data", len); 2525009ea47eSEdward Tomasz Napierala if (len > is->is_first_burst_length) { 252697b84d34SNavdeep Parhar ISCSI_SESSION_DEBUG(is, "len %zd -> %d", len, is->is_first_burst_length); 2527009ea47eSEdward Tomasz Napierala len = is->is_first_burst_length; 2528009ea47eSEdward Tomasz Napierala } 25290cc7d64aSJohn Baldwin if (len > is->is_conn->ic_max_send_data_segment_length) { 253097b84d34SNavdeep Parhar ISCSI_SESSION_DEBUG(is, "len %zd -> %d", len, 25310cc7d64aSJohn Baldwin is->is_conn->ic_max_send_data_segment_length); 25320cc7d64aSJohn Baldwin len = is->is_conn->ic_max_send_data_segment_length; 25333f9e1172SAlexander Motin } 2534009ea47eSEdward Tomasz Napierala 25357aab9c14SJohn Baldwin error = iscsi_pdu_append_data_csio(request, csio, 0, len, 25369c7a4875SJohn Baldwin M_NOWAIT | ICL_NOCOPY); 2537009ea47eSEdward Tomasz Napierala if (error != 0) { 2538938bcb04SEdward Tomasz Napierala iscsi_outstanding_remove(is, io); 2539009ea47eSEdward Tomasz Napierala icl_pdu_free(request); 2540009ea47eSEdward Tomasz Napierala if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 2541009ea47eSEdward Tomasz Napierala xpt_freeze_devq(ccb->ccb_h.path, 1); 2542009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 2543009ea47eSEdward Tomasz Napierala } 2544009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_RESRC_UNAVAIL | CAM_DEV_QFRZN; 2545009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2546009ea47eSEdward Tomasz Napierala return; 2547009ea47eSEdward Tomasz Napierala } 2548009ea47eSEdward Tomasz Napierala } 2549009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(request); 2550009ea47eSEdward Tomasz Napierala } 2551009ea47eSEdward Tomasz Napierala 2552009ea47eSEdward Tomasz Napierala static void 2553009ea47eSEdward Tomasz Napierala iscsi_action(struct cam_sim *sim, union ccb *ccb) 2554009ea47eSEdward Tomasz Napierala { 2555009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 2556009ea47eSEdward Tomasz Napierala 2557009ea47eSEdward Tomasz Napierala is = cam_sim_softc(sim); 2558009ea47eSEdward Tomasz Napierala 2559009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 2560009ea47eSEdward Tomasz Napierala 2561f1f12e40SEdward Tomasz Napierala if (is->is_terminating || 2562f1f12e40SEdward Tomasz Napierala (is->is_connected == false && fail_on_disconnection)) { 2563009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_DEV_NOT_THERE; 2564009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2565009ea47eSEdward Tomasz Napierala return; 2566009ea47eSEdward Tomasz Napierala } 2567009ea47eSEdward Tomasz Napierala 2568186bcdaaSEdward Tomasz Napierala /* 2569186bcdaaSEdward Tomasz Napierala * Make sure CAM doesn't sneak in a CCB just after freezing the queue. 2570186bcdaaSEdward Tomasz Napierala */ 2571186bcdaaSEdward Tomasz Napierala if (is->is_simq_frozen == true) { 2572186bcdaaSEdward Tomasz Napierala ccb->ccb_h.status &= ~(CAM_SIM_QUEUED | CAM_STATUS_MASK); 2573186bcdaaSEdward Tomasz Napierala ccb->ccb_h.status |= CAM_REQUEUE_REQ; 2574186bcdaaSEdward Tomasz Napierala /* Don't freeze the devq - the SIM queue is already frozen. */ 2575186bcdaaSEdward Tomasz Napierala xpt_done(ccb); 2576186bcdaaSEdward Tomasz Napierala return; 2577186bcdaaSEdward Tomasz Napierala } 2578186bcdaaSEdward Tomasz Napierala 2579009ea47eSEdward Tomasz Napierala switch (ccb->ccb_h.func_code) { 2580009ea47eSEdward Tomasz Napierala case XPT_PATH_INQ: 2581009ea47eSEdward Tomasz Napierala { 2582009ea47eSEdward Tomasz Napierala struct ccb_pathinq *cpi = &ccb->cpi; 2583009ea47eSEdward Tomasz Napierala 2584009ea47eSEdward Tomasz Napierala cpi->version_num = 1; 2585009ea47eSEdward Tomasz Napierala cpi->hba_inquiry = PI_TAG_ABLE; 2586009ea47eSEdward Tomasz Napierala cpi->target_sprt = 0; 2587a9f2f291SEdward Tomasz Napierala cpi->hba_misc = PIM_EXTLUNS; 25887deb68abSEdward Tomasz Napierala /* 25897deb68abSEdward Tomasz Napierala * XXX: It shouldn't ever be NULL; this could be turned 25907deb68abSEdward Tomasz Napierala * into a KASSERT eventually. 25917deb68abSEdward Tomasz Napierala */ 25927deb68abSEdward Tomasz Napierala if (is->is_conn == NULL) 25937deb68abSEdward Tomasz Napierala ISCSI_WARN("NULL conn"); 25947deb68abSEdward Tomasz Napierala else if (is->is_conn->ic_unmapped) 25957deb68abSEdward Tomasz Napierala cpi->hba_misc |= PIM_UNMAPPED; 2596009ea47eSEdward Tomasz Napierala cpi->hba_eng_cnt = 0; 2597009ea47eSEdward Tomasz Napierala cpi->max_target = 0; 259817cf3eb1SEdward Tomasz Napierala /* 259917cf3eb1SEdward Tomasz Napierala * Note that the variable below is only relevant for targets 260017cf3eb1SEdward Tomasz Napierala * that don't claim compliance with anything above SPC2, which 260117cf3eb1SEdward Tomasz Napierala * means they don't support REPORT_LUNS. 260217cf3eb1SEdward Tomasz Napierala */ 260317cf3eb1SEdward Tomasz Napierala cpi->max_lun = 255; 2604a9f2f291SEdward Tomasz Napierala cpi->initiator_id = ~0; 26057843bd03SEdward Tomasz Napierala strlcpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); 26067843bd03SEdward Tomasz Napierala strlcpy(cpi->hba_vid, "iSCSI", HBA_IDLEN); 26077843bd03SEdward Tomasz Napierala strlcpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); 2608009ea47eSEdward Tomasz Napierala cpi->unit_number = cam_sim_unit(sim); 2609009ea47eSEdward Tomasz Napierala cpi->bus_id = cam_sim_bus(sim); 2610009ea47eSEdward Tomasz Napierala cpi->base_transfer_speed = 150000; /* XXX */ 2611009ea47eSEdward Tomasz Napierala cpi->transport = XPORT_ISCSI; 2612009ea47eSEdward Tomasz Napierala cpi->transport_version = 0; 2613009ea47eSEdward Tomasz Napierala cpi->protocol = PROTO_SCSI; 2614009ea47eSEdward Tomasz Napierala cpi->protocol_version = SCSI_REV_SPC3; 2615cd853791SKonstantin Belousov cpi->maxio = maxphys; 2616009ea47eSEdward Tomasz Napierala cpi->ccb_h.status = CAM_REQ_CMP; 2617009ea47eSEdward Tomasz Napierala break; 2618009ea47eSEdward Tomasz Napierala } 2619462cf3baSAlexander Motin case XPT_GET_TRAN_SETTINGS: 2620462cf3baSAlexander Motin { 2621462cf3baSAlexander Motin struct ccb_trans_settings *cts; 2622462cf3baSAlexander Motin struct ccb_trans_settings_scsi *scsi; 2623462cf3baSAlexander Motin 2624462cf3baSAlexander Motin cts = &ccb->cts; 2625462cf3baSAlexander Motin scsi = &cts->proto_specific.scsi; 2626462cf3baSAlexander Motin 2627462cf3baSAlexander Motin cts->protocol = PROTO_SCSI; 2628462cf3baSAlexander Motin cts->protocol_version = SCSI_REV_SPC3; 2629462cf3baSAlexander Motin cts->transport = XPORT_ISCSI; 2630462cf3baSAlexander Motin cts->transport_version = 0; 2631462cf3baSAlexander Motin scsi->valid = CTS_SCSI_VALID_TQ; 2632462cf3baSAlexander Motin scsi->flags = CTS_SCSI_FLAGS_TAG_ENB; 2633462cf3baSAlexander Motin cts->ccb_h.status = CAM_REQ_CMP; 2634462cf3baSAlexander Motin break; 2635462cf3baSAlexander Motin } 2636009ea47eSEdward Tomasz Napierala case XPT_CALC_GEOMETRY: 2637009ea47eSEdward Tomasz Napierala cam_calc_geometry(&ccb->ccg, /*extended*/1); 2638009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_REQ_CMP; 2639009ea47eSEdward Tomasz Napierala break; 2640009ea47eSEdward Tomasz Napierala #if 0 2641009ea47eSEdward Tomasz Napierala /* 2642009ea47eSEdward Tomasz Napierala * XXX: What's the point? 2643009ea47eSEdward Tomasz Napierala */ 2644009ea47eSEdward Tomasz Napierala case XPT_RESET_BUS: 2645009ea47eSEdward Tomasz Napierala case XPT_TERM_IO: 2646009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "faking success for reset, abort, or term_io"); 2647009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_REQ_CMP; 2648009ea47eSEdward Tomasz Napierala break; 2649009ea47eSEdward Tomasz Napierala #endif 2650aa75114cSAlexander Motin case XPT_ABORT: 2651aa75114cSAlexander Motin iscsi_action_abort(is, ccb); 2652aa75114cSAlexander Motin return; 2653009ea47eSEdward Tomasz Napierala case XPT_SCSI_IO: 2654009ea47eSEdward Tomasz Napierala iscsi_action_scsiio(is, ccb); 2655009ea47eSEdward Tomasz Napierala return; 2656009ea47eSEdward Tomasz Napierala default: 2657009ea47eSEdward Tomasz Napierala #if 0 2658009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "got unsupported code 0x%x", ccb->ccb_h.func_code); 2659009ea47eSEdward Tomasz Napierala #endif 2660009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_FUNC_NOTAVAIL; 2661009ea47eSEdward Tomasz Napierala break; 2662009ea47eSEdward Tomasz Napierala } 2663009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2664009ea47eSEdward Tomasz Napierala } 2665009ea47eSEdward Tomasz Napierala 2666009ea47eSEdward Tomasz Napierala static void 2667481b36c6SSteven Hartland iscsi_terminate_sessions(struct iscsi_softc *sc) 2668009ea47eSEdward Tomasz Napierala { 2669009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 2670009ea47eSEdward Tomasz Napierala 2671481b36c6SSteven Hartland sx_slock(&sc->sc_lock); 2672481b36c6SSteven Hartland TAILQ_FOREACH(is, &sc->sc_sessions, is_next) 2673481b36c6SSteven Hartland iscsi_session_terminate(is); 2674481b36c6SSteven Hartland while(!TAILQ_EMPTY(&sc->sc_sessions)) { 2675481b36c6SSteven Hartland ISCSI_DEBUG("waiting for sessions to terminate"); 2676481b36c6SSteven Hartland cv_wait(&sc->sc_cv, &sc->sc_lock); 2677481b36c6SSteven Hartland } 2678481b36c6SSteven Hartland ISCSI_DEBUG("all sessions terminated"); 2679481b36c6SSteven Hartland sx_sunlock(&sc->sc_lock); 2680481b36c6SSteven Hartland } 2681481b36c6SSteven Hartland 2682481b36c6SSteven Hartland static void 2683481b36c6SSteven Hartland iscsi_shutdown_pre(struct iscsi_softc *sc) 2684481b36c6SSteven Hartland { 2685481b36c6SSteven Hartland struct iscsi_session *is; 2686481b36c6SSteven Hartland 2687481b36c6SSteven Hartland if (!fail_on_shutdown) 2688481b36c6SSteven Hartland return; 2689009ea47eSEdward Tomasz Napierala 2690e553ca49SEdward Tomasz Napierala /* 2691e553ca49SEdward Tomasz Napierala * If we have any sessions waiting for reconnection, request 2692e553ca49SEdward Tomasz Napierala * maintenance thread to fail them immediately instead of waiting 2693e553ca49SEdward Tomasz Napierala * for reconnect timeout. 2694481b36c6SSteven Hartland * 2695481b36c6SSteven Hartland * This prevents LUNs with mounted filesystems that are supported 2696481b36c6SSteven Hartland * by disconnected iSCSI sessions from hanging, however it will 2697481b36c6SSteven Hartland * fail all queued BIOs. 2698e553ca49SEdward Tomasz Napierala */ 2699481b36c6SSteven Hartland ISCSI_DEBUG("forcing failing all disconnected sessions due to shutdown"); 2700481b36c6SSteven Hartland 2701481b36c6SSteven Hartland fail_on_disconnection = 1; 2702481b36c6SSteven Hartland 2703009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 2704e553ca49SEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 2705e553ca49SEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 2706481b36c6SSteven Hartland if (!is->is_connected) { 2707481b36c6SSteven Hartland ISCSI_SESSION_DEBUG(is, "force failing disconnected session early"); 2708e553ca49SEdward Tomasz Napierala iscsi_session_reconnect(is); 2709481b36c6SSteven Hartland } 2710e553ca49SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 2711e553ca49SEdward Tomasz Napierala } 2712009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 2713009ea47eSEdward Tomasz Napierala } 2714009ea47eSEdward Tomasz Napierala 2715481b36c6SSteven Hartland static void 2716*4eb861d3SMitchell Horne iscsi_shutdown_post_sync(struct iscsi_softc *sc, int howto) 2717481b36c6SSteven Hartland { 2718481b36c6SSteven Hartland 2719*4eb861d3SMitchell Horne if ((howto & RB_NOSYNC) == 0) { 2720481b36c6SSteven Hartland ISCSI_DEBUG("removing all sessions due to shutdown"); 2721481b36c6SSteven Hartland iscsi_terminate_sessions(sc); 2722481b36c6SSteven Hartland } 2723e54fb4ffSAndriy Gapon } 2724481b36c6SSteven Hartland 2725009ea47eSEdward Tomasz Napierala static int 2726009ea47eSEdward Tomasz Napierala iscsi_load(void) 2727009ea47eSEdward Tomasz Napierala { 2728009ea47eSEdward Tomasz Napierala int error; 2729009ea47eSEdward Tomasz Napierala 2730009ea47eSEdward Tomasz Napierala sc = malloc(sizeof(*sc), M_ISCSI, M_ZERO | M_WAITOK); 2731009ea47eSEdward Tomasz Napierala sx_init(&sc->sc_lock, "iscsi"); 2732009ea47eSEdward Tomasz Napierala TAILQ_INIT(&sc->sc_sessions); 2733009ea47eSEdward Tomasz Napierala cv_init(&sc->sc_cv, "iscsi_cv"); 2734009ea47eSEdward Tomasz Napierala 2735009ea47eSEdward Tomasz Napierala iscsi_outstanding_zone = uma_zcreate("iscsi_outstanding", 2736009ea47eSEdward Tomasz Napierala sizeof(struct iscsi_outstanding), NULL, NULL, NULL, NULL, 2737c28c09c1SEdward Tomasz Napierala UMA_ALIGN_PTR, 0); 2738009ea47eSEdward Tomasz Napierala 2739009ea47eSEdward Tomasz Napierala error = make_dev_p(MAKEDEV_CHECKNAME, &sc->sc_cdev, &iscsi_cdevsw, 2740009ea47eSEdward Tomasz Napierala NULL, UID_ROOT, GID_WHEEL, 0600, "iscsi"); 2741009ea47eSEdward Tomasz Napierala if (error != 0) { 2742009ea47eSEdward Tomasz Napierala ISCSI_WARN("failed to create device node, error %d", error); 2743009ea47eSEdward Tomasz Napierala return (error); 2744009ea47eSEdward Tomasz Napierala } 2745009ea47eSEdward Tomasz Napierala sc->sc_cdev->si_drv1 = sc; 2746009ea47eSEdward Tomasz Napierala 2747481b36c6SSteven Hartland sc->sc_shutdown_pre_eh = EVENTHANDLER_REGISTER(shutdown_pre_sync, 2748481b36c6SSteven Hartland iscsi_shutdown_pre, sc, SHUTDOWN_PRI_FIRST); 2749481b36c6SSteven Hartland /* 2750481b36c6SSteven Hartland * shutdown_post_sync needs to run after filesystem shutdown and before 2751481b36c6SSteven Hartland * CAM shutdown - otherwise when rebooting with an iSCSI session that is 2752481b36c6SSteven Hartland * disconnected but has outstanding requests, dashutdown() will hang on 2753481b36c6SSteven Hartland * cam_periph_runccb(). 2754481b36c6SSteven Hartland */ 2755481b36c6SSteven Hartland sc->sc_shutdown_post_eh = EVENTHANDLER_REGISTER(shutdown_post_sync, 2756*4eb861d3SMitchell Horne iscsi_shutdown_post_sync, sc, SHUTDOWN_PRI_DEFAULT - 1); 2757009ea47eSEdward Tomasz Napierala 2758009ea47eSEdward Tomasz Napierala return (0); 2759009ea47eSEdward Tomasz Napierala } 2760009ea47eSEdward Tomasz Napierala 2761009ea47eSEdward Tomasz Napierala static int 2762009ea47eSEdward Tomasz Napierala iscsi_unload(void) 2763009ea47eSEdward Tomasz Napierala { 2764009ea47eSEdward Tomasz Napierala 276589df4847SJohn Baldwin /* Awaken any threads asleep in iscsi_ioctl(). */ 276689df4847SJohn Baldwin sx_xlock(&sc->sc_lock); 276789df4847SJohn Baldwin sc->sc_unloading = true; 276889df4847SJohn Baldwin cv_signal(&sc->sc_cv); 276989df4847SJohn Baldwin sx_xunlock(&sc->sc_lock); 277089df4847SJohn Baldwin 2771a667cf73SEdward Tomasz Napierala if (sc->sc_cdev != NULL) { 2772009ea47eSEdward Tomasz Napierala ISCSI_DEBUG("removing device node"); 2773009ea47eSEdward Tomasz Napierala destroy_dev(sc->sc_cdev); 2774009ea47eSEdward Tomasz Napierala ISCSI_DEBUG("device node removed"); 2775a667cf73SEdward Tomasz Napierala } 2776009ea47eSEdward Tomasz Napierala 2777481b36c6SSteven Hartland if (sc->sc_shutdown_pre_eh != NULL) 2778481b36c6SSteven Hartland EVENTHANDLER_DEREGISTER(shutdown_pre_sync, sc->sc_shutdown_pre_eh); 2779481b36c6SSteven Hartland if (sc->sc_shutdown_post_eh != NULL) 2780481b36c6SSteven Hartland EVENTHANDLER_DEREGISTER(shutdown_post_sync, sc->sc_shutdown_post_eh); 2781009ea47eSEdward Tomasz Napierala 2782481b36c6SSteven Hartland iscsi_terminate_sessions(sc); 2783009ea47eSEdward Tomasz Napierala 2784009ea47eSEdward Tomasz Napierala uma_zdestroy(iscsi_outstanding_zone); 2785009ea47eSEdward Tomasz Napierala sx_destroy(&sc->sc_lock); 2786009ea47eSEdward Tomasz Napierala cv_destroy(&sc->sc_cv); 2787009ea47eSEdward Tomasz Napierala free(sc, M_ISCSI); 2788009ea47eSEdward Tomasz Napierala return (0); 2789009ea47eSEdward Tomasz Napierala } 2790009ea47eSEdward Tomasz Napierala 2791009ea47eSEdward Tomasz Napierala static int 2792009ea47eSEdward Tomasz Napierala iscsi_quiesce(void) 2793009ea47eSEdward Tomasz Napierala { 2794009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 2795009ea47eSEdward Tomasz Napierala if (!TAILQ_EMPTY(&sc->sc_sessions)) { 2796009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 2797009ea47eSEdward Tomasz Napierala return (EBUSY); 2798009ea47eSEdward Tomasz Napierala } 2799009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 2800009ea47eSEdward Tomasz Napierala return (0); 2801009ea47eSEdward Tomasz Napierala } 2802009ea47eSEdward Tomasz Napierala 2803009ea47eSEdward Tomasz Napierala static int 2804009ea47eSEdward Tomasz Napierala iscsi_modevent(module_t mod, int what, void *arg) 2805009ea47eSEdward Tomasz Napierala { 2806009ea47eSEdward Tomasz Napierala int error; 2807009ea47eSEdward Tomasz Napierala 2808009ea47eSEdward Tomasz Napierala switch (what) { 2809009ea47eSEdward Tomasz Napierala case MOD_LOAD: 2810009ea47eSEdward Tomasz Napierala error = iscsi_load(); 2811009ea47eSEdward Tomasz Napierala break; 2812009ea47eSEdward Tomasz Napierala case MOD_UNLOAD: 2813009ea47eSEdward Tomasz Napierala error = iscsi_unload(); 2814009ea47eSEdward Tomasz Napierala break; 2815009ea47eSEdward Tomasz Napierala case MOD_QUIESCE: 2816009ea47eSEdward Tomasz Napierala error = iscsi_quiesce(); 2817009ea47eSEdward Tomasz Napierala break; 2818009ea47eSEdward Tomasz Napierala default: 2819009ea47eSEdward Tomasz Napierala error = EINVAL; 2820009ea47eSEdward Tomasz Napierala break; 2821009ea47eSEdward Tomasz Napierala } 2822009ea47eSEdward Tomasz Napierala return (error); 2823009ea47eSEdward Tomasz Napierala } 2824009ea47eSEdward Tomasz Napierala 2825009ea47eSEdward Tomasz Napierala moduledata_t iscsi_data = { 2826009ea47eSEdward Tomasz Napierala "iscsi", 2827009ea47eSEdward Tomasz Napierala iscsi_modevent, 2828009ea47eSEdward Tomasz Napierala 0 2829009ea47eSEdward Tomasz Napierala }; 2830009ea47eSEdward Tomasz Napierala 2831009ea47eSEdward Tomasz Napierala DECLARE_MODULE(iscsi, iscsi_data, SI_SUB_DRIVERS, SI_ORDER_MIDDLE); 2832009ea47eSEdward Tomasz Napierala MODULE_DEPEND(iscsi, cam, 1, 1, 1); 2833009ea47eSEdward Tomasz Napierala MODULE_DEPEND(iscsi, icl, 1, 1, 1); 2834