1009ea47eSEdward Tomasz Napierala /*- 2718cf2ccSPedro F. Giffuni * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 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> 33b7a65e39SEdward Tomasz Napierala __FBSDID("$FreeBSD$"); 34b7a65e39SEdward Tomasz Napierala 35009ea47eSEdward Tomasz Napierala #include <sys/param.h> 36009ea47eSEdward Tomasz Napierala #include <sys/condvar.h> 37009ea47eSEdward Tomasz Napierala #include <sys/conf.h> 38a9f2f291SEdward Tomasz Napierala #include <sys/endian.h> 39009ea47eSEdward Tomasz Napierala #include <sys/eventhandler.h> 40009ea47eSEdward Tomasz Napierala #include <sys/file.h> 41009ea47eSEdward Tomasz Napierala #include <sys/kernel.h> 42009ea47eSEdward Tomasz Napierala #include <sys/kthread.h> 43009ea47eSEdward Tomasz Napierala #include <sys/lock.h> 44009ea47eSEdward Tomasz Napierala #include <sys/malloc.h> 45bd6bb493SRichard Scheffenegger #include <sys/mbuf.h> 46009ea47eSEdward Tomasz Napierala #include <sys/mutex.h> 47009ea47eSEdward Tomasz Napierala #include <sys/module.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> 53009ea47eSEdward Tomasz Napierala #include <vm/uma.h> 54009ea47eSEdward Tomasz Napierala 55009ea47eSEdward Tomasz Napierala #include <cam/cam.h> 56009ea47eSEdward Tomasz Napierala #include <cam/cam_ccb.h> 57009ea47eSEdward Tomasz Napierala #include <cam/cam_xpt.h> 58009ea47eSEdward Tomasz Napierala #include <cam/cam_debug.h> 59009ea47eSEdward Tomasz Napierala #include <cam/cam_sim.h> 60009ea47eSEdward Tomasz Napierala #include <cam/cam_xpt_sim.h> 61009ea47eSEdward Tomasz Napierala #include <cam/cam_xpt_periph.h> 62009ea47eSEdward Tomasz Napierala #include <cam/cam_periph.h> 63009ea47eSEdward Tomasz Napierala #include <cam/scsi/scsi_all.h> 64009ea47eSEdward Tomasz Napierala #include <cam/scsi/scsi_message.h> 65009ea47eSEdward Tomasz Napierala 66ddc5fd90SEdward Tomasz Napierala #include <dev/iscsi/icl.h> 67321b17ecSEdward Tomasz Napierala #include <dev/iscsi/icl_wrappers.h> 68ddc5fd90SEdward Tomasz Napierala #include <dev/iscsi/iscsi_ioctl.h> 69ddc5fd90SEdward Tomasz Napierala #include <dev/iscsi/iscsi_proto.h> 70ddc5fd90SEdward Tomasz Napierala #include <dev/iscsi/iscsi.h> 71009ea47eSEdward Tomasz Napierala 72009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 73009ea47eSEdward Tomasz Napierala #include <sys/socketvar.h> 74009ea47eSEdward Tomasz Napierala #endif 75009ea47eSEdward Tomasz Napierala 762ebde326SEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 772ebde326SEdward Tomasz Napierala FEATURE(iscsi_kernel_proxy, "iSCSI initiator built with ICL_KERNEL_PROXY"); 782ebde326SEdward Tomasz Napierala #endif 792ebde326SEdward Tomasz Napierala 80009ea47eSEdward Tomasz Napierala /* 81009ea47eSEdward Tomasz Napierala * XXX: This is global so the iscsi_unload() can access it. 82009ea47eSEdward Tomasz Napierala * Think about how to do this properly. 83009ea47eSEdward Tomasz Napierala */ 84009ea47eSEdward Tomasz Napierala static struct iscsi_softc *sc; 85009ea47eSEdward Tomasz Napierala 86e0d69c5aSPawel Biernacki SYSCTL_NODE(_kern, OID_AUTO, iscsi, CTLFLAG_RD | CTLFLAG_MPSAFE, 0, 87e0d69c5aSPawel Biernacki "iSCSI initiator"); 88009ea47eSEdward Tomasz Napierala static int debug = 1; 89605a34b0SEdward Tomasz Napierala SYSCTL_INT(_kern_iscsi, OID_AUTO, debug, CTLFLAG_RWTUN, 901f6b2af2SAlexander Motin &debug, 0, "Enable debug messages"); 91bd6bb493SRichard Scheffenegger 92009ea47eSEdward Tomasz Napierala static int ping_timeout = 5; 93605a34b0SEdward Tomasz Napierala SYSCTL_INT(_kern_iscsi, OID_AUTO, ping_timeout, CTLFLAG_RWTUN, &ping_timeout, 941f6b2af2SAlexander Motin 0, "Timeout for ping (NOP-Out) requests, in seconds"); 95009ea47eSEdward Tomasz Napierala static int iscsid_timeout = 60; 96605a34b0SEdward Tomasz Napierala SYSCTL_INT(_kern_iscsi, OID_AUTO, iscsid_timeout, CTLFLAG_RWTUN, &iscsid_timeout, 971f6b2af2SAlexander Motin 0, "Time to wait for iscsid(8) to handle reconnection, in seconds"); 98009ea47eSEdward Tomasz Napierala static int login_timeout = 60; 99605a34b0SEdward Tomasz Napierala SYSCTL_INT(_kern_iscsi, OID_AUTO, login_timeout, CTLFLAG_RWTUN, &login_timeout, 1001f6b2af2SAlexander Motin 0, "Time to wait for iscsid(8) to finish Login Phase, in seconds"); 101009ea47eSEdward Tomasz Napierala static int maxtags = 255; 102605a34b0SEdward Tomasz Napierala SYSCTL_INT(_kern_iscsi, OID_AUTO, maxtags, CTLFLAG_RWTUN, &maxtags, 1031f6b2af2SAlexander Motin 0, "Max number of IO requests queued"); 104f1f12e40SEdward Tomasz Napierala static int fail_on_disconnection = 0; 105f1f12e40SEdward Tomasz Napierala SYSCTL_INT(_kern_iscsi, OID_AUTO, fail_on_disconnection, CTLFLAG_RWTUN, 106f1f12e40SEdward Tomasz Napierala &fail_on_disconnection, 0, "Destroy CAM SIM on connection failure"); 107481b36c6SSteven Hartland static int fail_on_shutdown = 1; 108481b36c6SSteven Hartland SYSCTL_INT(_kern_iscsi, OID_AUTO, fail_on_shutdown, CTLFLAG_RWTUN, 109481b36c6SSteven Hartland &fail_on_shutdown, 0, "Fail disconnected sessions on shutdown"); 110009ea47eSEdward Tomasz Napierala 111009ea47eSEdward Tomasz Napierala static MALLOC_DEFINE(M_ISCSI, "iSCSI", "iSCSI initiator"); 112009ea47eSEdward Tomasz Napierala static uma_zone_t iscsi_outstanding_zone; 113009ea47eSEdward Tomasz Napierala 114009ea47eSEdward Tomasz Napierala #define CONN_SESSION(X) ((struct iscsi_session *)X->ic_prv0) 115009ea47eSEdward Tomasz Napierala #define PDU_SESSION(X) (CONN_SESSION(X->ip_conn)) 116009ea47eSEdward Tomasz Napierala 117009ea47eSEdward Tomasz Napierala #define ISCSI_DEBUG(X, ...) \ 118b1277ad1SEdward Tomasz Napierala do { \ 119b1277ad1SEdward Tomasz Napierala if (debug > 1) \ 120009ea47eSEdward Tomasz Napierala printf("%s: " X "\n", __func__, ## __VA_ARGS__);\ 121009ea47eSEdward Tomasz Napierala } while (0) 122009ea47eSEdward Tomasz Napierala 123009ea47eSEdward Tomasz Napierala #define ISCSI_WARN(X, ...) \ 124b1277ad1SEdward Tomasz Napierala do { \ 125009ea47eSEdward Tomasz Napierala if (debug > 0) { \ 126009ea47eSEdward Tomasz Napierala printf("WARNING: %s: " X "\n", \ 127009ea47eSEdward Tomasz Napierala __func__, ## __VA_ARGS__); \ 128b1277ad1SEdward Tomasz Napierala } \ 129009ea47eSEdward Tomasz Napierala } while (0) 130009ea47eSEdward Tomasz Napierala 131009ea47eSEdward Tomasz Napierala #define ISCSI_SESSION_DEBUG(S, X, ...) \ 132b1277ad1SEdward Tomasz Napierala do { \ 133009ea47eSEdward Tomasz Napierala if (debug > 1) { \ 134009ea47eSEdward Tomasz Napierala printf("%s: %s (%s): " X "\n", \ 135009ea47eSEdward Tomasz Napierala __func__, S->is_conf.isc_target_addr, \ 136009ea47eSEdward Tomasz Napierala S->is_conf.isc_target, ## __VA_ARGS__); \ 137b1277ad1SEdward Tomasz Napierala } \ 138009ea47eSEdward Tomasz Napierala } while (0) 139009ea47eSEdward Tomasz Napierala 140009ea47eSEdward Tomasz Napierala #define ISCSI_SESSION_WARN(S, X, ...) \ 141b1277ad1SEdward Tomasz Napierala do { \ 142009ea47eSEdward Tomasz Napierala if (debug > 0) { \ 143009ea47eSEdward Tomasz Napierala printf("WARNING: %s (%s): " X "\n", \ 144009ea47eSEdward Tomasz Napierala S->is_conf.isc_target_addr, \ 145009ea47eSEdward Tomasz Napierala S->is_conf.isc_target, ## __VA_ARGS__); \ 146b1277ad1SEdward Tomasz Napierala } \ 147009ea47eSEdward Tomasz Napierala } while (0) 148009ea47eSEdward Tomasz Napierala 149009ea47eSEdward Tomasz Napierala #define ISCSI_SESSION_LOCK(X) mtx_lock(&X->is_lock) 150009ea47eSEdward Tomasz Napierala #define ISCSI_SESSION_UNLOCK(X) mtx_unlock(&X->is_lock) 151009ea47eSEdward Tomasz Napierala #define ISCSI_SESSION_LOCK_ASSERT(X) mtx_assert(&X->is_lock, MA_OWNED) 152c215ad3aSAlexander Motin #define ISCSI_SESSION_LOCK_ASSERT_NOT(X) mtx_assert(&X->is_lock, MA_NOTOWNED) 153009ea47eSEdward Tomasz Napierala 154009ea47eSEdward Tomasz Napierala static int iscsi_ioctl(struct cdev *dev, u_long cmd, caddr_t arg, 155009ea47eSEdward Tomasz Napierala int mode, struct thread *td); 156009ea47eSEdward Tomasz Napierala 157009ea47eSEdward Tomasz Napierala static struct cdevsw iscsi_cdevsw = { 158009ea47eSEdward Tomasz Napierala .d_version = D_VERSION, 159009ea47eSEdward Tomasz Napierala .d_ioctl = iscsi_ioctl, 160009ea47eSEdward Tomasz Napierala .d_name = "iscsi", 161009ea47eSEdward Tomasz Napierala }; 162009ea47eSEdward Tomasz Napierala 163009ea47eSEdward Tomasz Napierala static void iscsi_pdu_queue_locked(struct icl_pdu *request); 164009ea47eSEdward Tomasz Napierala static void iscsi_pdu_queue(struct icl_pdu *request); 165009ea47eSEdward Tomasz Napierala static void iscsi_pdu_update_statsn(const struct icl_pdu *response); 166009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_nop_in(struct icl_pdu *response); 167009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_scsi_response(struct icl_pdu *response); 168aa75114cSAlexander Motin static void iscsi_pdu_handle_task_response(struct icl_pdu *response); 169009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_data_in(struct icl_pdu *response); 170009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_logout_response(struct icl_pdu *response); 171009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_r2t(struct icl_pdu *response); 172009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_async_message(struct icl_pdu *response); 173009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_reject(struct icl_pdu *response); 174009ea47eSEdward Tomasz Napierala static void iscsi_session_reconnect(struct iscsi_session *is); 175009ea47eSEdward Tomasz Napierala static void iscsi_session_terminate(struct iscsi_session *is); 176009ea47eSEdward Tomasz Napierala static void iscsi_action(struct cam_sim *sim, union ccb *ccb); 177009ea47eSEdward Tomasz Napierala static struct iscsi_outstanding *iscsi_outstanding_find(struct iscsi_session *is, 178009ea47eSEdward Tomasz Napierala uint32_t initiator_task_tag); 179aa75114cSAlexander Motin static struct iscsi_outstanding *iscsi_outstanding_add(struct iscsi_session *is, 180604c023fSEdward Tomasz Napierala struct icl_pdu *request, union ccb *ccb, 181604c023fSEdward Tomasz Napierala uint32_t *initiator_task_tagp); 182009ea47eSEdward Tomasz Napierala static void iscsi_outstanding_remove(struct iscsi_session *is, 183009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io); 184009ea47eSEdward Tomasz Napierala 185009ea47eSEdward Tomasz Napierala static bool 186009ea47eSEdward Tomasz Napierala iscsi_pdu_prepare(struct icl_pdu *request) 187009ea47eSEdward Tomasz Napierala { 188009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 189009ea47eSEdward Tomasz Napierala struct iscsi_bhs_scsi_command *bhssc; 190009ea47eSEdward Tomasz Napierala 191009ea47eSEdward Tomasz Napierala is = PDU_SESSION(request); 192009ea47eSEdward Tomasz Napierala 193009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 194009ea47eSEdward Tomasz Napierala 195009ea47eSEdward Tomasz Napierala /* 196009ea47eSEdward Tomasz Napierala * We're only using fields common for all the request 197009ea47eSEdward Tomasz Napierala * (initiator -> target) PDUs. 198009ea47eSEdward Tomasz Napierala */ 199009ea47eSEdward Tomasz Napierala bhssc = (struct iscsi_bhs_scsi_command *)request->ip_bhs; 200009ea47eSEdward Tomasz Napierala 201009ea47eSEdward Tomasz Napierala /* 202009ea47eSEdward Tomasz Napierala * Data-Out PDU does not contain CmdSN. 203009ea47eSEdward Tomasz Napierala */ 204009ea47eSEdward Tomasz Napierala if (bhssc->bhssc_opcode != ISCSI_BHS_OPCODE_SCSI_DATA_OUT) { 2052124e3b0SAlexander Motin if (ISCSI_SNGT(is->is_cmdsn, is->is_maxcmdsn) && 206009ea47eSEdward Tomasz Napierala (bhssc->bhssc_opcode & ISCSI_BHS_OPCODE_IMMEDIATE) == 0) { 207009ea47eSEdward Tomasz Napierala /* 208009ea47eSEdward Tomasz Napierala * Current MaxCmdSN prevents us from sending any more 209009ea47eSEdward Tomasz Napierala * SCSI Command PDUs to the target; postpone the PDU. 210009ea47eSEdward Tomasz Napierala * It will get resent by either iscsi_pdu_queue(), 211009ea47eSEdward Tomasz Napierala * or by maintenance thread. 212009ea47eSEdward Tomasz Napierala */ 213009ea47eSEdward Tomasz Napierala #if 0 2142124e3b0SAlexander Motin ISCSI_SESSION_DEBUG(is, "postponing send, CmdSN %u, " 2152124e3b0SAlexander Motin "ExpCmdSN %u, MaxCmdSN %u, opcode 0x%x", 2162124e3b0SAlexander Motin is->is_cmdsn, is->is_expcmdsn, is->is_maxcmdsn, 2172124e3b0SAlexander Motin bhssc->bhssc_opcode); 218009ea47eSEdward Tomasz Napierala #endif 219009ea47eSEdward Tomasz Napierala return (true); 220009ea47eSEdward Tomasz Napierala } 221009ea47eSEdward Tomasz Napierala bhssc->bhssc_cmdsn = htonl(is->is_cmdsn); 222009ea47eSEdward Tomasz Napierala if ((bhssc->bhssc_opcode & ISCSI_BHS_OPCODE_IMMEDIATE) == 0) 223009ea47eSEdward Tomasz Napierala is->is_cmdsn++; 224009ea47eSEdward Tomasz Napierala } 225009ea47eSEdward Tomasz Napierala bhssc->bhssc_expstatsn = htonl(is->is_statsn + 1); 226009ea47eSEdward Tomasz Napierala 227009ea47eSEdward Tomasz Napierala return (false); 228009ea47eSEdward Tomasz Napierala } 229009ea47eSEdward Tomasz Napierala 230009ea47eSEdward Tomasz Napierala static void 231009ea47eSEdward Tomasz Napierala iscsi_session_send_postponed(struct iscsi_session *is) 232009ea47eSEdward Tomasz Napierala { 233009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 234009ea47eSEdward Tomasz Napierala bool postpone; 235009ea47eSEdward Tomasz Napierala 236009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 237009ea47eSEdward Tomasz Napierala 2384c9ea0ceSAlexander Motin if (STAILQ_EMPTY(&is->is_postponed)) 2394c9ea0ceSAlexander Motin return; 2404c9ea0ceSAlexander Motin while ((request = STAILQ_FIRST(&is->is_postponed)) != NULL) { 241009ea47eSEdward Tomasz Napierala postpone = iscsi_pdu_prepare(request); 242009ea47eSEdward Tomasz Napierala if (postpone) 2434c9ea0ceSAlexander Motin return; 24416c158a5SEdward Tomasz Napierala STAILQ_REMOVE_HEAD(&is->is_postponed, ip_next); 245009ea47eSEdward Tomasz Napierala icl_pdu_queue(request); 246009ea47eSEdward Tomasz Napierala } 2474c9ea0ceSAlexander Motin xpt_release_simq(is->is_sim, 1); 248009ea47eSEdward Tomasz Napierala } 249009ea47eSEdward Tomasz Napierala 250009ea47eSEdward Tomasz Napierala static void 251009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(struct icl_pdu *request) 252009ea47eSEdward Tomasz Napierala { 253009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 254009ea47eSEdward Tomasz Napierala bool postpone; 255009ea47eSEdward Tomasz Napierala 256009ea47eSEdward Tomasz Napierala is = PDU_SESSION(request); 257009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 258009ea47eSEdward Tomasz Napierala iscsi_session_send_postponed(is); 259009ea47eSEdward Tomasz Napierala postpone = iscsi_pdu_prepare(request); 260009ea47eSEdward Tomasz Napierala if (postpone) { 2614c9ea0ceSAlexander Motin if (STAILQ_EMPTY(&is->is_postponed)) 2624c9ea0ceSAlexander Motin xpt_freeze_simq(is->is_sim, 1); 26316c158a5SEdward Tomasz Napierala STAILQ_INSERT_TAIL(&is->is_postponed, request, ip_next); 264009ea47eSEdward Tomasz Napierala return; 265009ea47eSEdward Tomasz Napierala } 266009ea47eSEdward Tomasz Napierala icl_pdu_queue(request); 267009ea47eSEdward Tomasz Napierala } 268009ea47eSEdward Tomasz Napierala 269009ea47eSEdward Tomasz Napierala static void 270009ea47eSEdward Tomasz Napierala iscsi_pdu_queue(struct icl_pdu *request) 271009ea47eSEdward Tomasz Napierala { 272009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 273009ea47eSEdward Tomasz Napierala 274009ea47eSEdward Tomasz Napierala is = PDU_SESSION(request); 275009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 276009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(request); 277009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 278009ea47eSEdward Tomasz Napierala } 279009ea47eSEdward Tomasz Napierala 280009ea47eSEdward Tomasz Napierala static void 281009ea47eSEdward Tomasz Napierala iscsi_session_logout(struct iscsi_session *is) 282009ea47eSEdward Tomasz Napierala { 283009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 284009ea47eSEdward Tomasz Napierala struct iscsi_bhs_logout_request *bhslr; 285009ea47eSEdward Tomasz Napierala 286d2d52b00SEdward Tomasz Napierala request = icl_pdu_new(is->is_conn, M_NOWAIT); 287009ea47eSEdward Tomasz Napierala if (request == NULL) 288009ea47eSEdward Tomasz Napierala return; 289009ea47eSEdward Tomasz Napierala 290009ea47eSEdward Tomasz Napierala bhslr = (struct iscsi_bhs_logout_request *)request->ip_bhs; 291009ea47eSEdward Tomasz Napierala bhslr->bhslr_opcode = ISCSI_BHS_OPCODE_LOGOUT_REQUEST; 292009ea47eSEdward Tomasz Napierala bhslr->bhslr_reason = BHSLR_REASON_CLOSE_SESSION; 293009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(request); 294009ea47eSEdward Tomasz Napierala } 295009ea47eSEdward Tomasz Napierala 296009ea47eSEdward Tomasz Napierala static void 297aa75114cSAlexander Motin iscsi_session_terminate_task(struct iscsi_session *is, 298ad10496cSAndriy Gapon struct iscsi_outstanding *io, cam_status status) 299aa75114cSAlexander Motin { 300aa75114cSAlexander Motin 301e204e2cdSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 302e204e2cdSEdward Tomasz Napierala 303aa75114cSAlexander Motin if (io->io_ccb != NULL) { 304aa75114cSAlexander Motin io->io_ccb->ccb_h.status &= ~(CAM_SIM_QUEUED | CAM_STATUS_MASK); 305ad10496cSAndriy Gapon io->io_ccb->ccb_h.status |= status; 306aa75114cSAlexander Motin if ((io->io_ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 307aa75114cSAlexander Motin io->io_ccb->ccb_h.status |= CAM_DEV_QFRZN; 308aa75114cSAlexander Motin xpt_freeze_devq(io->io_ccb->ccb_h.path, 1); 309aa75114cSAlexander Motin ISCSI_SESSION_DEBUG(is, "freezing devq"); 310aa75114cSAlexander Motin } 311aa75114cSAlexander Motin xpt_done(io->io_ccb); 312aa75114cSAlexander Motin } 313aa75114cSAlexander Motin iscsi_outstanding_remove(is, io); 314aa75114cSAlexander Motin } 315aa75114cSAlexander Motin 316aa75114cSAlexander Motin static void 317ad10496cSAndriy Gapon iscsi_session_terminate_tasks(struct iscsi_session *is, cam_status status) 318009ea47eSEdward Tomasz Napierala { 319009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io, *tmp; 320009ea47eSEdward Tomasz Napierala 321009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 322009ea47eSEdward Tomasz Napierala 323009ea47eSEdward Tomasz Napierala TAILQ_FOREACH_SAFE(io, &is->is_outstanding, io_next, tmp) { 324ad10496cSAndriy Gapon iscsi_session_terminate_task(is, io, status); 325009ea47eSEdward Tomasz Napierala } 326009ea47eSEdward Tomasz Napierala } 327009ea47eSEdward Tomasz Napierala 328009ea47eSEdward Tomasz Napierala static void 329f1f12e40SEdward Tomasz Napierala iscsi_session_cleanup(struct iscsi_session *is, bool destroy_sim) 330009ea47eSEdward Tomasz Napierala { 331009ea47eSEdward Tomasz Napierala struct icl_pdu *pdu; 332009ea47eSEdward Tomasz Napierala 333f1f12e40SEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 334009ea47eSEdward Tomasz Napierala 335009ea47eSEdward Tomasz Napierala /* 336009ea47eSEdward Tomasz Napierala * Don't queue any new PDUs. 337009ea47eSEdward Tomasz Napierala */ 338009ea47eSEdward Tomasz Napierala if (is->is_sim != NULL && is->is_simq_frozen == false) { 339009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing"); 340009ea47eSEdward Tomasz Napierala xpt_freeze_simq(is->is_sim, 1); 341009ea47eSEdward Tomasz Napierala is->is_simq_frozen = true; 342009ea47eSEdward Tomasz Napierala } 343009ea47eSEdward Tomasz Napierala 344009ea47eSEdward Tomasz Napierala /* 345009ea47eSEdward Tomasz Napierala * Remove postponed PDUs. 346009ea47eSEdward Tomasz Napierala */ 3474c9ea0ceSAlexander Motin if (!STAILQ_EMPTY(&is->is_postponed)) 3484c9ea0ceSAlexander Motin xpt_release_simq(is->is_sim, 1); 3494c9ea0ceSAlexander Motin while ((pdu = STAILQ_FIRST(&is->is_postponed)) != NULL) { 35016c158a5SEdward Tomasz Napierala STAILQ_REMOVE_HEAD(&is->is_postponed, ip_next); 351009ea47eSEdward Tomasz Napierala icl_pdu_free(pdu); 352009ea47eSEdward Tomasz Napierala } 353009ea47eSEdward Tomasz Napierala 354f1f12e40SEdward Tomasz Napierala if (destroy_sim == false) { 355009ea47eSEdward Tomasz Napierala /* 356009ea47eSEdward Tomasz Napierala * Terminate SCSI tasks, asking CAM to requeue them. 357009ea47eSEdward Tomasz Napierala */ 358ad10496cSAndriy Gapon iscsi_session_terminate_tasks(is, CAM_REQUEUE_REQ); 359f1f12e40SEdward Tomasz Napierala return; 360f1f12e40SEdward Tomasz Napierala } 361f1f12e40SEdward Tomasz Napierala 362ad10496cSAndriy Gapon iscsi_session_terminate_tasks(is, CAM_DEV_NOT_THERE); 363f1f12e40SEdward Tomasz Napierala 364f1f12e40SEdward Tomasz Napierala if (is->is_sim == NULL) 365f1f12e40SEdward Tomasz Napierala return; 366f1f12e40SEdward Tomasz Napierala 367f1f12e40SEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "deregistering SIM"); 368f1f12e40SEdward Tomasz Napierala xpt_async(AC_LOST_DEVICE, is->is_path, NULL); 369f1f12e40SEdward Tomasz Napierala 370f1f12e40SEdward Tomasz Napierala if (is->is_simq_frozen) { 371f1f12e40SEdward Tomasz Napierala is->is_simq_frozen = false; 372186bcdaaSEdward Tomasz Napierala xpt_release_simq(is->is_sim, 1); 373f1f12e40SEdward Tomasz Napierala } 374f1f12e40SEdward Tomasz Napierala 375f1f12e40SEdward Tomasz Napierala xpt_free_path(is->is_path); 376f1f12e40SEdward Tomasz Napierala is->is_path = NULL; 377f1f12e40SEdward Tomasz Napierala xpt_bus_deregister(cam_sim_path(is->is_sim)); 378f1f12e40SEdward Tomasz Napierala cam_sim_free(is->is_sim, TRUE /*free_devq*/); 379f1f12e40SEdward Tomasz Napierala is->is_sim = NULL; 380f1f12e40SEdward Tomasz Napierala is->is_devq = NULL; 381f1f12e40SEdward Tomasz Napierala } 382f1f12e40SEdward Tomasz Napierala 383f1f12e40SEdward Tomasz Napierala static void 384f1f12e40SEdward Tomasz Napierala iscsi_maintenance_thread_reconnect(struct iscsi_session *is) 385f1f12e40SEdward Tomasz Napierala { 386bd6bb493SRichard Scheffenegger /* 387bd6bb493SRichard Scheffenegger * As we will be reconnecting shortly, 388bd6bb493SRichard Scheffenegger * discard outstanding data immediately on 389bd6bb493SRichard Scheffenegger * close(), also notify peer via RST if 390bd6bb493SRichard Scheffenegger * any packets come in. 391bd6bb493SRichard Scheffenegger */ 392bd6bb493SRichard Scheffenegger struct socket *so; 393bd6bb493SRichard Scheffenegger so = is->is_conn->ic_socket; 394bd6bb493SRichard Scheffenegger if (so != NULL) { 395bd6bb493SRichard Scheffenegger struct sockopt sopt; 396bd6bb493SRichard Scheffenegger struct linger sl; 397bd6bb493SRichard Scheffenegger sopt.sopt_dir = SOPT_SET; 398bd6bb493SRichard Scheffenegger sopt.sopt_level = SOL_SOCKET; 399bd6bb493SRichard Scheffenegger sopt.sopt_name = SO_LINGER; 400bd6bb493SRichard Scheffenegger sopt.sopt_val = &sl; 401bd6bb493SRichard Scheffenegger sopt.sopt_valsize = sizeof(sl); 402bd6bb493SRichard Scheffenegger sl.l_onoff = 1; /* non-zero value enables linger option in kernel */ 403bd6bb493SRichard Scheffenegger sl.l_linger = 0; /* timeout interval in seconds */ 404bd6bb493SRichard Scheffenegger sosetopt(is->is_conn->ic_socket, &sopt); 405bd6bb493SRichard Scheffenegger } 406f1f12e40SEdward Tomasz Napierala 407f1f12e40SEdward Tomasz Napierala icl_conn_close(is->is_conn); 408f1f12e40SEdward Tomasz Napierala 409f1f12e40SEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 410f1f12e40SEdward Tomasz Napierala 411f1f12e40SEdward Tomasz Napierala is->is_connected = false; 412f1f12e40SEdward Tomasz Napierala is->is_reconnecting = false; 413f1f12e40SEdward Tomasz Napierala is->is_login_phase = false; 414f1f12e40SEdward Tomasz Napierala 415f1f12e40SEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 416f1f12e40SEdward Tomasz Napierala if (is->is_login_pdu != NULL) { 417f1f12e40SEdward Tomasz Napierala icl_pdu_free(is->is_login_pdu); 418f1f12e40SEdward Tomasz Napierala is->is_login_pdu = NULL; 419f1f12e40SEdward Tomasz Napierala } 420f1f12e40SEdward Tomasz Napierala cv_signal(&is->is_login_cv); 421f1f12e40SEdward Tomasz Napierala #endif 422f1f12e40SEdward Tomasz Napierala 423f1f12e40SEdward Tomasz Napierala if (fail_on_disconnection) { 424f1f12e40SEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "connection failed, destroying devices"); 425f1f12e40SEdward Tomasz Napierala iscsi_session_cleanup(is, true); 426f1f12e40SEdward Tomasz Napierala } else { 427f1f12e40SEdward Tomasz Napierala iscsi_session_cleanup(is, false); 428f1f12e40SEdward Tomasz Napierala } 429009ea47eSEdward Tomasz Napierala 430009ea47eSEdward Tomasz Napierala KASSERT(TAILQ_EMPTY(&is->is_outstanding), 431009ea47eSEdward Tomasz Napierala ("destroying session with active tasks")); 43216c158a5SEdward Tomasz Napierala KASSERT(STAILQ_EMPTY(&is->is_postponed), 433009ea47eSEdward Tomasz Napierala ("destroying session with postponed PDUs")); 434009ea47eSEdward Tomasz Napierala 435ba165a31SEdward Tomasz Napierala if (is->is_conf.isc_enable == 0 && is->is_conf.isc_discovery == 0) { 436ba165a31SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 437ba165a31SEdward Tomasz Napierala return; 438ba165a31SEdward Tomasz Napierala } 439ba165a31SEdward Tomasz Napierala 440009ea47eSEdward Tomasz Napierala /* 441009ea47eSEdward Tomasz Napierala * Request immediate reconnection from iscsid(8). 442009ea47eSEdward Tomasz Napierala */ 443009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "waking up iscsid(8)"); 444009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = true; 445009ea47eSEdward Tomasz Napierala strlcpy(is->is_reason, "Waiting for iscsid(8)", sizeof(is->is_reason)); 446009ea47eSEdward Tomasz Napierala is->is_timeout = 0; 447009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 448009ea47eSEdward Tomasz Napierala cv_signal(&is->is_softc->sc_cv); 449009ea47eSEdward Tomasz Napierala } 450009ea47eSEdward Tomasz Napierala 451009ea47eSEdward Tomasz Napierala static void 452009ea47eSEdward Tomasz Napierala iscsi_maintenance_thread_terminate(struct iscsi_session *is) 453009ea47eSEdward Tomasz Napierala { 454009ea47eSEdward Tomasz Napierala struct iscsi_softc *sc; 455009ea47eSEdward Tomasz Napierala 456009ea47eSEdward Tomasz Napierala sc = is->is_softc; 457009ea47eSEdward Tomasz Napierala sx_xlock(&sc->sc_lock); 45820e9cab5SAndriy Gapon TAILQ_REMOVE(&sc->sc_sessions, is, is_next); 45920e9cab5SAndriy Gapon sx_xunlock(&sc->sc_lock); 460009ea47eSEdward Tomasz Napierala 461009ea47eSEdward Tomasz Napierala icl_conn_close(is->is_conn); 462674074daSEdward Tomasz Napierala callout_drain(&is->is_callout); 463009ea47eSEdward Tomasz Napierala 464009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 465009ea47eSEdward Tomasz Napierala 466009ea47eSEdward Tomasz Napierala KASSERT(is->is_terminating, ("is_terminating == false")); 467009ea47eSEdward Tomasz Napierala 468009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 469009ea47eSEdward Tomasz Napierala if (is->is_login_pdu != NULL) { 470009ea47eSEdward Tomasz Napierala icl_pdu_free(is->is_login_pdu); 471009ea47eSEdward Tomasz Napierala is->is_login_pdu = NULL; 472009ea47eSEdward Tomasz Napierala } 473009ea47eSEdward Tomasz Napierala cv_signal(&is->is_login_cv); 474009ea47eSEdward Tomasz Napierala #endif 475009ea47eSEdward Tomasz Napierala 476f1f12e40SEdward Tomasz Napierala iscsi_session_cleanup(is, true); 477009ea47eSEdward Tomasz Napierala 478009ea47eSEdward Tomasz Napierala KASSERT(TAILQ_EMPTY(&is->is_outstanding), 479009ea47eSEdward Tomasz Napierala ("destroying session with active tasks")); 48016c158a5SEdward Tomasz Napierala KASSERT(STAILQ_EMPTY(&is->is_postponed), 481009ea47eSEdward Tomasz Napierala ("destroying session with postponed PDUs")); 482009ea47eSEdward Tomasz Napierala 483009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 484009ea47eSEdward Tomasz Napierala 485009ea47eSEdward Tomasz Napierala icl_conn_free(is->is_conn); 486009ea47eSEdward Tomasz Napierala mtx_destroy(&is->is_lock); 487009ea47eSEdward Tomasz Napierala cv_destroy(&is->is_maintenance_cv); 488009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 489009ea47eSEdward Tomasz Napierala cv_destroy(&is->is_login_cv); 490009ea47eSEdward Tomasz Napierala #endif 491481b36c6SSteven Hartland 492009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "terminated"); 493009ea47eSEdward Tomasz Napierala free(is, M_ISCSI); 494009ea47eSEdward Tomasz Napierala 495009ea47eSEdward Tomasz Napierala /* 496009ea47eSEdward Tomasz Napierala * The iscsi_unload() routine might be waiting. 497009ea47eSEdward Tomasz Napierala */ 498009ea47eSEdward Tomasz Napierala cv_signal(&sc->sc_cv); 499009ea47eSEdward Tomasz Napierala } 500009ea47eSEdward Tomasz Napierala 501009ea47eSEdward Tomasz Napierala static void 502009ea47eSEdward Tomasz Napierala iscsi_maintenance_thread(void *arg) 503009ea47eSEdward Tomasz Napierala { 5045b338bc0SAlexander Motin struct iscsi_session *is = arg; 505009ea47eSEdward Tomasz Napierala 506009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 5075b338bc0SAlexander Motin for (;;) { 508009ea47eSEdward Tomasz Napierala if (is->is_reconnecting == false && 509009ea47eSEdward Tomasz Napierala is->is_terminating == false && 5105b338bc0SAlexander Motin (STAILQ_EMPTY(&is->is_postponed) || 5115b338bc0SAlexander Motin ISCSI_SNGT(is->is_cmdsn, is->is_maxcmdsn))) 512009ea47eSEdward Tomasz Napierala cv_wait(&is->is_maintenance_cv, &is->is_lock); 513009ea47eSEdward Tomasz Napierala 514481b36c6SSteven Hartland /* Terminate supersedes reconnect. */ 515009ea47eSEdward Tomasz Napierala if (is->is_terminating) { 516009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 517009ea47eSEdward Tomasz Napierala iscsi_maintenance_thread_terminate(is); 518009ea47eSEdward Tomasz Napierala kthread_exit(); 519009ea47eSEdward Tomasz Napierala return; 520009ea47eSEdward Tomasz Napierala } 521009ea47eSEdward Tomasz Napierala 522481b36c6SSteven Hartland if (is->is_reconnecting) { 523481b36c6SSteven Hartland ISCSI_SESSION_UNLOCK(is); 524481b36c6SSteven Hartland iscsi_maintenance_thread_reconnect(is); 5255b338bc0SAlexander Motin ISCSI_SESSION_LOCK(is); 526481b36c6SSteven Hartland continue; 527481b36c6SSteven Hartland } 528481b36c6SSteven Hartland 529009ea47eSEdward Tomasz Napierala iscsi_session_send_postponed(is); 530009ea47eSEdward Tomasz Napierala } 5315b338bc0SAlexander Motin ISCSI_SESSION_UNLOCK(is); 532009ea47eSEdward Tomasz Napierala } 533009ea47eSEdward Tomasz Napierala 534009ea47eSEdward Tomasz Napierala static void 535009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(struct iscsi_session *is) 536009ea47eSEdward Tomasz Napierala { 537009ea47eSEdward Tomasz Napierala 538009ea47eSEdward Tomasz Napierala /* 539009ea47eSEdward Tomasz Napierala * XXX: We can't use locking here, because 540009ea47eSEdward Tomasz Napierala * it's being called from various contexts. 541009ea47eSEdward Tomasz Napierala * Hope it doesn't break anything. 542009ea47eSEdward Tomasz Napierala */ 543009ea47eSEdward Tomasz Napierala if (is->is_reconnecting) 544009ea47eSEdward Tomasz Napierala return; 545009ea47eSEdward Tomasz Napierala 546009ea47eSEdward Tomasz Napierala is->is_reconnecting = true; 547009ea47eSEdward Tomasz Napierala cv_signal(&is->is_maintenance_cv); 548009ea47eSEdward Tomasz Napierala } 549009ea47eSEdward Tomasz Napierala 550009ea47eSEdward Tomasz Napierala static void 551009ea47eSEdward Tomasz Napierala iscsi_session_terminate(struct iscsi_session *is) 552009ea47eSEdward Tomasz Napierala { 553674074daSEdward Tomasz Napierala 554009ea47eSEdward Tomasz Napierala if (is->is_terminating) 555009ea47eSEdward Tomasz Napierala return; 556009ea47eSEdward Tomasz Napierala 557009ea47eSEdward Tomasz Napierala is->is_terminating = true; 558009ea47eSEdward Tomasz Napierala 559009ea47eSEdward Tomasz Napierala #if 0 560009ea47eSEdward Tomasz Napierala iscsi_session_logout(is); 561009ea47eSEdward Tomasz Napierala #endif 562009ea47eSEdward Tomasz Napierala cv_signal(&is->is_maintenance_cv); 563009ea47eSEdward Tomasz Napierala } 564009ea47eSEdward Tomasz Napierala 565009ea47eSEdward Tomasz Napierala static void 566009ea47eSEdward Tomasz Napierala iscsi_callout(void *context) 567009ea47eSEdward Tomasz Napierala { 568009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 569009ea47eSEdward Tomasz Napierala struct iscsi_bhs_nop_out *bhsno; 570009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 571009ea47eSEdward Tomasz Napierala bool reconnect_needed = false; 572972a7d95SRichard Scheffenegger sbintime_t sbt, pr; 573009ea47eSEdward Tomasz Napierala 574009ea47eSEdward Tomasz Napierala is = context; 575009ea47eSEdward Tomasz Napierala 576674074daSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 577674074daSEdward Tomasz Napierala if (is->is_terminating) { 578674074daSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 579009ea47eSEdward Tomasz Napierala return; 580674074daSEdward Tomasz Napierala } 581009ea47eSEdward Tomasz Napierala 582972a7d95SRichard Scheffenegger sbt = mstosbt(995); 583972a7d95SRichard Scheffenegger pr = mstosbt(10); 584972a7d95SRichard Scheffenegger callout_schedule_sbt(&is->is_callout, sbt, pr, 0); 585009ea47eSEdward Tomasz Napierala 586ba165a31SEdward Tomasz Napierala if (is->is_conf.isc_enable == 0) 587ba165a31SEdward Tomasz Napierala goto out; 588ba165a31SEdward Tomasz Napierala 589009ea47eSEdward Tomasz Napierala is->is_timeout++; 590009ea47eSEdward Tomasz Napierala 591009ea47eSEdward Tomasz Napierala if (is->is_waiting_for_iscsid) { 5922c5b89e5SEdward Tomasz Napierala if (iscsid_timeout > 0 && is->is_timeout > iscsid_timeout) { 593009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "timed out waiting for iscsid(8) " 594009ea47eSEdward Tomasz Napierala "for %d seconds; reconnecting", 595009ea47eSEdward Tomasz Napierala is->is_timeout); 596009ea47eSEdward Tomasz Napierala reconnect_needed = true; 597009ea47eSEdward Tomasz Napierala } 598009ea47eSEdward Tomasz Napierala goto out; 599009ea47eSEdward Tomasz Napierala } 600009ea47eSEdward Tomasz Napierala 601009ea47eSEdward Tomasz Napierala if (is->is_login_phase) { 602bd6bb493SRichard Scheffenegger if (is->is_login_timeout > 0 && is->is_timeout > is->is_login_timeout) { 603009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "login timed out after %d seconds; " 604009ea47eSEdward Tomasz Napierala "reconnecting", is->is_timeout); 605009ea47eSEdward Tomasz Napierala reconnect_needed = true; 606009ea47eSEdward Tomasz Napierala } 607009ea47eSEdward Tomasz Napierala goto out; 608009ea47eSEdward Tomasz Napierala } 609009ea47eSEdward Tomasz Napierala 610bd6bb493SRichard Scheffenegger if (is->is_ping_timeout <= 0) { 6112c5b89e5SEdward Tomasz Napierala /* 6122c5b89e5SEdward Tomasz Napierala * Pings are disabled. Don't send NOP-Out in this case. 6132c5b89e5SEdward Tomasz Napierala * Reset the timeout, to avoid triggering reconnection, 6142c5b89e5SEdward Tomasz Napierala * should the user decide to reenable them. 6152c5b89e5SEdward Tomasz Napierala */ 6162c5b89e5SEdward Tomasz Napierala is->is_timeout = 0; 6172c5b89e5SEdward Tomasz Napierala goto out; 6182c5b89e5SEdward Tomasz Napierala } 6192c5b89e5SEdward Tomasz Napierala 620bd6bb493SRichard Scheffenegger if (is->is_timeout >= is->is_ping_timeout) { 621009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "no ping reply (NOP-In) after %d seconds; " 622bd6bb493SRichard Scheffenegger "reconnecting", is->is_ping_timeout); 623009ea47eSEdward Tomasz Napierala reconnect_needed = true; 624009ea47eSEdward Tomasz Napierala goto out; 625009ea47eSEdward Tomasz Napierala } 626009ea47eSEdward Tomasz Napierala 627009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 628009ea47eSEdward Tomasz Napierala 629009ea47eSEdward Tomasz Napierala /* 630009ea47eSEdward Tomasz Napierala * If the ping was reset less than one second ago - which means 631009ea47eSEdward Tomasz Napierala * that we've received some PDU during the last second - assume 632009ea47eSEdward Tomasz Napierala * the traffic flows correctly and don't bother sending a NOP-Out. 633009ea47eSEdward Tomasz Napierala * 634009ea47eSEdward Tomasz Napierala * (It's 2 - one for one second, and one for incrementing is_timeout 635009ea47eSEdward Tomasz Napierala * earlier in this routine.) 636009ea47eSEdward Tomasz Napierala */ 637009ea47eSEdward Tomasz Napierala if (is->is_timeout < 2) 638009ea47eSEdward Tomasz Napierala return; 639009ea47eSEdward Tomasz Napierala 640d2d52b00SEdward Tomasz Napierala request = icl_pdu_new(is->is_conn, M_NOWAIT); 64146aaea89SEdward Tomasz Napierala if (request == NULL) { 64246aaea89SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate PDU"); 64346aaea89SEdward Tomasz Napierala return; 64446aaea89SEdward Tomasz Napierala } 645009ea47eSEdward Tomasz Napierala bhsno = (struct iscsi_bhs_nop_out *)request->ip_bhs; 646009ea47eSEdward Tomasz Napierala bhsno->bhsno_opcode = ISCSI_BHS_OPCODE_NOP_OUT | 647009ea47eSEdward Tomasz Napierala ISCSI_BHS_OPCODE_IMMEDIATE; 648009ea47eSEdward Tomasz Napierala bhsno->bhsno_flags = 0x80; 649009ea47eSEdward Tomasz Napierala bhsno->bhsno_target_transfer_tag = 0xffffffff; 650009ea47eSEdward Tomasz Napierala iscsi_pdu_queue(request); 651009ea47eSEdward Tomasz Napierala return; 652009ea47eSEdward Tomasz Napierala 653009ea47eSEdward Tomasz Napierala out: 654481b36c6SSteven Hartland if (is->is_terminating) { 655481b36c6SSteven Hartland ISCSI_SESSION_UNLOCK(is); 656481b36c6SSteven Hartland return; 657481b36c6SSteven Hartland } 658481b36c6SSteven Hartland 659009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 660009ea47eSEdward Tomasz Napierala 661009ea47eSEdward Tomasz Napierala if (reconnect_needed) 662009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 663009ea47eSEdward Tomasz Napierala } 664009ea47eSEdward Tomasz Napierala 665009ea47eSEdward Tomasz Napierala static void 666009ea47eSEdward Tomasz Napierala iscsi_pdu_update_statsn(const struct icl_pdu *response) 667009ea47eSEdward Tomasz Napierala { 668009ea47eSEdward Tomasz Napierala const struct iscsi_bhs_data_in *bhsdi; 669009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 6702124e3b0SAlexander Motin uint32_t expcmdsn, maxcmdsn, statsn; 671009ea47eSEdward Tomasz Napierala 672009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 673009ea47eSEdward Tomasz Napierala 674009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 675009ea47eSEdward Tomasz Napierala 676009ea47eSEdward Tomasz Napierala /* 677009ea47eSEdward Tomasz Napierala * We're only using fields common for all the response 678009ea47eSEdward Tomasz Napierala * (target -> initiator) PDUs. 679009ea47eSEdward Tomasz Napierala */ 680009ea47eSEdward Tomasz Napierala bhsdi = (const struct iscsi_bhs_data_in *)response->ip_bhs; 681009ea47eSEdward Tomasz Napierala /* 682009ea47eSEdward Tomasz Napierala * Ok, I lied. In case of Data-In, "The fields StatSN, Status, 683009ea47eSEdward Tomasz Napierala * and Residual Count only have meaningful content if the S bit 684009ea47eSEdward Tomasz Napierala * is set to 1", so we also need to check the bit specific for 685009ea47eSEdward Tomasz Napierala * Data-In PDU. 686009ea47eSEdward Tomasz Napierala */ 687009ea47eSEdward Tomasz Napierala if (bhsdi->bhsdi_opcode != ISCSI_BHS_OPCODE_SCSI_DATA_IN || 688009ea47eSEdward Tomasz Napierala (bhsdi->bhsdi_flags & BHSDI_FLAGS_S) != 0) { 6892124e3b0SAlexander Motin statsn = ntohl(bhsdi->bhsdi_statsn); 6902124e3b0SAlexander Motin if (statsn != is->is_statsn && statsn != (is->is_statsn + 1)) { 6912124e3b0SAlexander Motin /* XXX: This is normal situation for MCS */ 6922124e3b0SAlexander Motin ISCSI_SESSION_WARN(is, "PDU 0x%x StatSN %u != " 6932124e3b0SAlexander Motin "session ExpStatSN %u (or + 1); reconnecting", 6942124e3b0SAlexander Motin bhsdi->bhsdi_opcode, statsn, is->is_statsn); 6952124e3b0SAlexander Motin iscsi_session_reconnect(is); 696009ea47eSEdward Tomasz Napierala } 6972124e3b0SAlexander Motin if (ISCSI_SNGT(statsn, is->is_statsn)) 6982124e3b0SAlexander Motin is->is_statsn = statsn; 699009ea47eSEdward Tomasz Napierala } 700009ea47eSEdward Tomasz Napierala 701009ea47eSEdward Tomasz Napierala expcmdsn = ntohl(bhsdi->bhsdi_expcmdsn); 702009ea47eSEdward Tomasz Napierala maxcmdsn = ntohl(bhsdi->bhsdi_maxcmdsn); 703009ea47eSEdward Tomasz Napierala 7042124e3b0SAlexander Motin if (ISCSI_SNLT(maxcmdsn + 1, expcmdsn)) { 7052124e3b0SAlexander Motin ISCSI_SESSION_DEBUG(is, 7062124e3b0SAlexander Motin "PDU MaxCmdSN %u + 1 < PDU ExpCmdSN %u; ignoring", 707009ea47eSEdward Tomasz Napierala maxcmdsn, expcmdsn); 708009ea47eSEdward Tomasz Napierala } else { 7092124e3b0SAlexander Motin if (ISCSI_SNGT(maxcmdsn, is->is_maxcmdsn)) { 710009ea47eSEdward Tomasz Napierala is->is_maxcmdsn = maxcmdsn; 711009ea47eSEdward Tomasz Napierala 712009ea47eSEdward Tomasz Napierala /* 713009ea47eSEdward Tomasz Napierala * Command window increased; kick the maintanance thread 714009ea47eSEdward Tomasz Napierala * to send out postponed commands. 715009ea47eSEdward Tomasz Napierala */ 71616c158a5SEdward Tomasz Napierala if (!STAILQ_EMPTY(&is->is_postponed)) 717009ea47eSEdward Tomasz Napierala cv_signal(&is->is_maintenance_cv); 7182124e3b0SAlexander Motin } else if (ISCSI_SNLT(maxcmdsn, is->is_maxcmdsn)) { 7192124e3b0SAlexander Motin /* XXX: This is normal situation for MCS */ 7202124e3b0SAlexander Motin ISCSI_SESSION_DEBUG(is, 7212124e3b0SAlexander Motin "PDU MaxCmdSN %u < session MaxCmdSN %u; ignoring", 722009ea47eSEdward Tomasz Napierala maxcmdsn, is->is_maxcmdsn); 723009ea47eSEdward Tomasz Napierala } 724009ea47eSEdward Tomasz Napierala 7252124e3b0SAlexander Motin if (ISCSI_SNGT(expcmdsn, is->is_expcmdsn)) { 726009ea47eSEdward Tomasz Napierala is->is_expcmdsn = expcmdsn; 7272124e3b0SAlexander Motin } else if (ISCSI_SNLT(expcmdsn, is->is_expcmdsn)) { 7282124e3b0SAlexander Motin /* XXX: This is normal situation for MCS */ 7292124e3b0SAlexander Motin ISCSI_SESSION_DEBUG(is, 7302124e3b0SAlexander Motin "PDU ExpCmdSN %u < session ExpCmdSN %u; ignoring", 731009ea47eSEdward Tomasz Napierala expcmdsn, is->is_expcmdsn); 732009ea47eSEdward Tomasz Napierala } 733009ea47eSEdward Tomasz Napierala } 734009ea47eSEdward Tomasz Napierala 735009ea47eSEdward Tomasz Napierala /* 736009ea47eSEdward Tomasz Napierala * Every incoming PDU - not just NOP-In - resets the ping timer. 737009ea47eSEdward Tomasz Napierala * The purpose of the timeout is to reset the connection when it stalls; 738009ea47eSEdward Tomasz Napierala * we don't want this to happen when NOP-In or NOP-Out ends up delayed 739009ea47eSEdward Tomasz Napierala * in some queue. 740009ea47eSEdward Tomasz Napierala */ 741009ea47eSEdward Tomasz Napierala is->is_timeout = 0; 742009ea47eSEdward Tomasz Napierala } 743009ea47eSEdward Tomasz Napierala 744009ea47eSEdward Tomasz Napierala static void 745009ea47eSEdward Tomasz Napierala iscsi_receive_callback(struct icl_pdu *response) 746009ea47eSEdward Tomasz Napierala { 747009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 748009ea47eSEdward Tomasz Napierala 749009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 750009ea47eSEdward Tomasz Napierala 751009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 752009ea47eSEdward Tomasz Napierala 753d66a906bSEdward Tomasz Napierala iscsi_pdu_update_statsn(response); 754d66a906bSEdward Tomasz Napierala 755009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 756009ea47eSEdward Tomasz Napierala if (is->is_login_phase) { 757009ea47eSEdward Tomasz Napierala if (is->is_login_pdu == NULL) 758009ea47eSEdward Tomasz Napierala is->is_login_pdu = response; 759009ea47eSEdward Tomasz Napierala else 760009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 761009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 762009ea47eSEdward Tomasz Napierala cv_signal(&is->is_login_cv); 763009ea47eSEdward Tomasz Napierala return; 764009ea47eSEdward Tomasz Napierala } 765009ea47eSEdward Tomasz Napierala #endif 766009ea47eSEdward Tomasz Napierala 767009ea47eSEdward Tomasz Napierala /* 768009ea47eSEdward Tomasz Napierala * The handling routine is responsible for freeing the PDU 769009ea47eSEdward Tomasz Napierala * when it's no longer needed. 770009ea47eSEdward Tomasz Napierala */ 771009ea47eSEdward Tomasz Napierala switch (response->ip_bhs->bhs_opcode) { 772009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_NOP_IN: 773009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_nop_in(response); 774c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 775009ea47eSEdward Tomasz Napierala break; 776009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_SCSI_RESPONSE: 777009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_scsi_response(response); 778c215ad3aSAlexander Motin /* Session lock dropped inside. */ 779c215ad3aSAlexander Motin ISCSI_SESSION_LOCK_ASSERT_NOT(is); 780009ea47eSEdward Tomasz Napierala break; 781aa75114cSAlexander Motin case ISCSI_BHS_OPCODE_TASK_RESPONSE: 782aa75114cSAlexander Motin iscsi_pdu_handle_task_response(response); 783c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 784aa75114cSAlexander Motin break; 785009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_SCSI_DATA_IN: 786009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_data_in(response); 787c215ad3aSAlexander Motin /* Session lock dropped inside. */ 788c215ad3aSAlexander Motin ISCSI_SESSION_LOCK_ASSERT_NOT(is); 789009ea47eSEdward Tomasz Napierala break; 790009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_LOGOUT_RESPONSE: 791009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_logout_response(response); 792c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 793009ea47eSEdward Tomasz Napierala break; 794009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_R2T: 795009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_r2t(response); 796c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 797009ea47eSEdward Tomasz Napierala break; 798009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_ASYNC_MESSAGE: 799009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_async_message(response); 800c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 801009ea47eSEdward Tomasz Napierala break; 802009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_REJECT: 803009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_reject(response); 804c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 805009ea47eSEdward Tomasz Napierala break; 806009ea47eSEdward Tomasz Napierala default: 807009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "received PDU with unsupported " 808009ea47eSEdward Tomasz Napierala "opcode 0x%x; reconnecting", 809009ea47eSEdward Tomasz Napierala response->ip_bhs->bhs_opcode); 810009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 811c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 812009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 813009ea47eSEdward Tomasz Napierala } 814009ea47eSEdward Tomasz Napierala } 815009ea47eSEdward Tomasz Napierala 816009ea47eSEdward Tomasz Napierala static void 817009ea47eSEdward Tomasz Napierala iscsi_error_callback(struct icl_conn *ic) 818009ea47eSEdward Tomasz Napierala { 819009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 820009ea47eSEdward Tomasz Napierala 821009ea47eSEdward Tomasz Napierala is = CONN_SESSION(ic); 822009ea47eSEdward Tomasz Napierala 823009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "connection error; reconnecting"); 824009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 825009ea47eSEdward Tomasz Napierala } 826009ea47eSEdward Tomasz Napierala 827009ea47eSEdward Tomasz Napierala static void 828009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_nop_in(struct icl_pdu *response) 829009ea47eSEdward Tomasz Napierala { 8301008ac5eSEdward Tomasz Napierala struct iscsi_session *is; 831009ea47eSEdward Tomasz Napierala struct iscsi_bhs_nop_out *bhsno; 832009ea47eSEdward Tomasz Napierala struct iscsi_bhs_nop_in *bhsni; 833009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 8341008ac5eSEdward Tomasz Napierala void *data = NULL; 8351008ac5eSEdward Tomasz Napierala size_t datasize; 8361008ac5eSEdward Tomasz Napierala int error; 837009ea47eSEdward Tomasz Napierala 8381008ac5eSEdward Tomasz Napierala is = PDU_SESSION(response); 839009ea47eSEdward Tomasz Napierala bhsni = (struct iscsi_bhs_nop_in *)response->ip_bhs; 840009ea47eSEdward Tomasz Napierala 841009ea47eSEdward Tomasz Napierala if (bhsni->bhsni_target_transfer_tag == 0xffffffff) { 842009ea47eSEdward Tomasz Napierala /* 843009ea47eSEdward Tomasz Napierala * Nothing to do; iscsi_pdu_update_statsn() already 844009ea47eSEdward Tomasz Napierala * zeroed the timeout. 845009ea47eSEdward Tomasz Napierala */ 846009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 847009ea47eSEdward Tomasz Napierala return; 848009ea47eSEdward Tomasz Napierala } 849009ea47eSEdward Tomasz Napierala 8501008ac5eSEdward Tomasz Napierala datasize = icl_pdu_data_segment_length(response); 8511008ac5eSEdward Tomasz Napierala if (datasize > 0) { 8521008ac5eSEdward Tomasz Napierala data = malloc(datasize, M_ISCSI, M_NOWAIT | M_ZERO); 8531008ac5eSEdward Tomasz Napierala if (data == NULL) { 8541008ac5eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate memory; " 8551008ac5eSEdward Tomasz Napierala "reconnecting"); 8561008ac5eSEdward Tomasz Napierala icl_pdu_free(response); 8571008ac5eSEdward Tomasz Napierala iscsi_session_reconnect(is); 8581008ac5eSEdward Tomasz Napierala return; 8591008ac5eSEdward Tomasz Napierala } 8601008ac5eSEdward Tomasz Napierala icl_pdu_get_data(response, 0, data, datasize); 8611008ac5eSEdward Tomasz Napierala } 8621008ac5eSEdward Tomasz Napierala 863d2d52b00SEdward Tomasz Napierala request = icl_pdu_new(response->ip_conn, M_NOWAIT); 864009ea47eSEdward Tomasz Napierala if (request == NULL) { 8651008ac5eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate memory; " 8661008ac5eSEdward Tomasz Napierala "reconnecting"); 8671008ac5eSEdward Tomasz Napierala free(data, M_ISCSI); 868009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 8691008ac5eSEdward Tomasz Napierala iscsi_session_reconnect(is); 870009ea47eSEdward Tomasz Napierala return; 871009ea47eSEdward Tomasz Napierala } 872009ea47eSEdward Tomasz Napierala bhsno = (struct iscsi_bhs_nop_out *)request->ip_bhs; 873009ea47eSEdward Tomasz Napierala bhsno->bhsno_opcode = ISCSI_BHS_OPCODE_NOP_OUT | 874009ea47eSEdward Tomasz Napierala ISCSI_BHS_OPCODE_IMMEDIATE; 875009ea47eSEdward Tomasz Napierala bhsno->bhsno_flags = 0x80; 8761008ac5eSEdward Tomasz Napierala bhsno->bhsno_initiator_task_tag = 0xffffffff; 877009ea47eSEdward Tomasz Napierala bhsno->bhsno_target_transfer_tag = bhsni->bhsni_target_transfer_tag; 8781008ac5eSEdward Tomasz Napierala if (datasize > 0) { 8791008ac5eSEdward Tomasz Napierala error = icl_pdu_append_data(request, data, datasize, M_NOWAIT); 8801008ac5eSEdward Tomasz Napierala if (error != 0) { 8811008ac5eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate memory; " 8821008ac5eSEdward Tomasz Napierala "reconnecting"); 8831008ac5eSEdward Tomasz Napierala free(data, M_ISCSI); 8841008ac5eSEdward Tomasz Napierala icl_pdu_free(request); 8851008ac5eSEdward Tomasz Napierala icl_pdu_free(response); 8861008ac5eSEdward Tomasz Napierala iscsi_session_reconnect(is); 8871008ac5eSEdward Tomasz Napierala return; 8881008ac5eSEdward Tomasz Napierala } 8891008ac5eSEdward Tomasz Napierala free(data, M_ISCSI); 8901008ac5eSEdward Tomasz Napierala } 891009ea47eSEdward Tomasz Napierala 892009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 893009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(request); 894009ea47eSEdward Tomasz Napierala } 895009ea47eSEdward Tomasz Napierala 896009ea47eSEdward Tomasz Napierala static void 897009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_scsi_response(struct icl_pdu *response) 898009ea47eSEdward Tomasz Napierala { 899009ea47eSEdward Tomasz Napierala struct iscsi_bhs_scsi_response *bhssr; 900009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io; 901009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 90273e2e95dSAlexander Motin union ccb *ccb; 903009ea47eSEdward Tomasz Napierala struct ccb_scsiio *csio; 90473e2e95dSAlexander Motin size_t data_segment_len, received; 905009ea47eSEdward Tomasz Napierala uint16_t sense_len; 906bcec64bcSEdward Tomasz Napierala uint32_t resid; 907009ea47eSEdward Tomasz Napierala 908009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 909009ea47eSEdward Tomasz Napierala 910009ea47eSEdward Tomasz Napierala bhssr = (struct iscsi_bhs_scsi_response *)response->ip_bhs; 911009ea47eSEdward Tomasz Napierala io = iscsi_outstanding_find(is, bhssr->bhssr_initiator_task_tag); 912aa75114cSAlexander Motin if (io == NULL || io->io_ccb == NULL) { 913009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "bad itt 0x%x", bhssr->bhssr_initiator_task_tag); 914009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 915009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 916c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 917009ea47eSEdward Tomasz Napierala return; 918009ea47eSEdward Tomasz Napierala } 919009ea47eSEdward Tomasz Napierala 92073e2e95dSAlexander Motin ccb = io->io_ccb; 921cdbc4a07SJohn Baldwin if (bhssr->bhssr_response == BHSSR_RESPONSE_COMMAND_COMPLETED) { 9224f0f5bf9SJohn Baldwin if (ntohl(bhssr->bhssr_expdatasn) != io->io_datasn) { 9234f0f5bf9SJohn Baldwin ISCSI_SESSION_WARN(is, 9244f0f5bf9SJohn Baldwin "ExpDataSN mismatch in SCSI Response (%u vs %u)", 9254f0f5bf9SJohn Baldwin ntohl(bhssr->bhssr_expdatasn), io->io_datasn); 926cdbc4a07SJohn Baldwin 927cdbc4a07SJohn Baldwin /* 928cdbc4a07SJohn Baldwin * XXX: Permit an ExpDataSN of zero for errors. 929cdbc4a07SJohn Baldwin * 930cdbc4a07SJohn Baldwin * This doesn't conform to RFC 7143, but some 931cdbc4a07SJohn Baldwin * targets seem to do this. 932cdbc4a07SJohn Baldwin */ 933cdbc4a07SJohn Baldwin if (bhssr->bhssr_status != 0 && 934cdbc4a07SJohn Baldwin bhssr->bhssr_expdatasn == htonl(0)) 935cdbc4a07SJohn Baldwin goto skip_expdatasn; 936cdbc4a07SJohn Baldwin 9374f0f5bf9SJohn Baldwin icl_pdu_free(response); 9384f0f5bf9SJohn Baldwin iscsi_session_reconnect(is); 9394f0f5bf9SJohn Baldwin ISCSI_SESSION_UNLOCK(is); 9404f0f5bf9SJohn Baldwin return; 9414f0f5bf9SJohn Baldwin } 942cdbc4a07SJohn Baldwin } else { 943cdbc4a07SJohn Baldwin if (bhssr->bhssr_expdatasn != htonl(0)) { 944cdbc4a07SJohn Baldwin ISCSI_SESSION_WARN(is, 945cdbc4a07SJohn Baldwin "ExpDataSN mismatch in SCSI Response (%u vs 0)", 946cdbc4a07SJohn Baldwin ntohl(bhssr->bhssr_expdatasn)); 947cdbc4a07SJohn Baldwin icl_pdu_free(response); 948cdbc4a07SJohn Baldwin iscsi_session_reconnect(is); 949cdbc4a07SJohn Baldwin ISCSI_SESSION_UNLOCK(is); 950cdbc4a07SJohn Baldwin return; 951cdbc4a07SJohn Baldwin } 952cdbc4a07SJohn Baldwin } 953cdbc4a07SJohn Baldwin skip_expdatasn: 954bcec64bcSEdward Tomasz Napierala 955bcec64bcSEdward Tomasz Napierala /* 956bcec64bcSEdward Tomasz Napierala * With iSER, after getting good response we can be sure 957bcec64bcSEdward Tomasz Napierala * that all the data has been successfully transferred. 958bcec64bcSEdward Tomasz Napierala */ 959bcec64bcSEdward Tomasz Napierala if (is->is_conn->ic_iser) { 960bcec64bcSEdward Tomasz Napierala resid = ntohl(bhssr->bhssr_residual_count); 961bcec64bcSEdward Tomasz Napierala if (bhssr->bhssr_flags & BHSSR_FLAGS_RESIDUAL_UNDERFLOW) { 962bcec64bcSEdward Tomasz Napierala io->io_received = ccb->csio.dxfer_len - resid; 963bcec64bcSEdward Tomasz Napierala } else if (bhssr->bhssr_flags & BHSSR_FLAGS_RESIDUAL_OVERFLOW) { 964bcec64bcSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "overflow: target indicates %d", resid); 965bcec64bcSEdward Tomasz Napierala } else { 966bcec64bcSEdward Tomasz Napierala io->io_received = ccb->csio.dxfer_len; 967bcec64bcSEdward Tomasz Napierala } 968bcec64bcSEdward Tomasz Napierala } 969bcec64bcSEdward Tomasz Napierala 97073e2e95dSAlexander Motin received = io->io_received; 971c215ad3aSAlexander Motin iscsi_outstanding_remove(is, io); 972c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 973c215ad3aSAlexander Motin 974009ea47eSEdward Tomasz Napierala if (bhssr->bhssr_response != BHSSR_RESPONSE_COMMAND_COMPLETED) { 975009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "service response 0x%x", bhssr->bhssr_response); 97673e2e95dSAlexander Motin if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 97773e2e95dSAlexander Motin xpt_freeze_devq(ccb->ccb_h.path, 1); 978009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 979009ea47eSEdward Tomasz Napierala } 98073e2e95dSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP_ERR | CAM_DEV_QFRZN; 981009ea47eSEdward Tomasz Napierala } else if (bhssr->bhssr_status == 0) { 98273e2e95dSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP; 983009ea47eSEdward Tomasz Napierala } else { 98473e2e95dSAlexander Motin if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 98573e2e95dSAlexander Motin xpt_freeze_devq(ccb->ccb_h.path, 1); 986009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 987009ea47eSEdward Tomasz Napierala } 98873e2e95dSAlexander Motin ccb->ccb_h.status = CAM_SCSI_STATUS_ERROR | CAM_DEV_QFRZN; 98973e2e95dSAlexander Motin ccb->csio.scsi_status = bhssr->bhssr_status; 990009ea47eSEdward Tomasz Napierala } 991009ea47eSEdward Tomasz Napierala 99273e2e95dSAlexander Motin csio = &ccb->csio; 993009ea47eSEdward Tomasz Napierala data_segment_len = icl_pdu_data_segment_length(response); 994009ea47eSEdward Tomasz Napierala if (data_segment_len > 0) { 995009ea47eSEdward Tomasz Napierala if (data_segment_len < sizeof(sense_len)) { 996009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "truncated data segment (%zd bytes)", 997009ea47eSEdward Tomasz Napierala data_segment_len); 99873e2e95dSAlexander Motin if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 99973e2e95dSAlexander Motin xpt_freeze_devq(ccb->ccb_h.path, 1); 1000009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 1001009ea47eSEdward Tomasz Napierala } 100273e2e95dSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP_ERR | CAM_DEV_QFRZN; 1003009ea47eSEdward Tomasz Napierala goto out; 1004009ea47eSEdward Tomasz Napierala } 1005009ea47eSEdward Tomasz Napierala icl_pdu_get_data(response, 0, &sense_len, sizeof(sense_len)); 1006009ea47eSEdward Tomasz Napierala sense_len = ntohs(sense_len); 1007009ea47eSEdward Tomasz Napierala #if 0 1008009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "sense_len %d, data len %zd", 1009009ea47eSEdward Tomasz Napierala sense_len, data_segment_len); 1010009ea47eSEdward Tomasz Napierala #endif 1011009ea47eSEdward Tomasz Napierala if (sizeof(sense_len) + sense_len > data_segment_len) { 1012009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "truncated data segment " 1013009ea47eSEdward Tomasz Napierala "(%zd bytes, should be %zd)", 1014009ea47eSEdward Tomasz Napierala data_segment_len, sizeof(sense_len) + sense_len); 101573e2e95dSAlexander Motin if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 101673e2e95dSAlexander Motin xpt_freeze_devq(ccb->ccb_h.path, 1); 1017009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 1018009ea47eSEdward Tomasz Napierala } 101973e2e95dSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP_ERR | CAM_DEV_QFRZN; 1020009ea47eSEdward Tomasz Napierala goto out; 1021009ea47eSEdward Tomasz Napierala } else if (sizeof(sense_len) + sense_len < data_segment_len) 1022009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "oversize data segment " 1023009ea47eSEdward Tomasz Napierala "(%zd bytes, should be %zd)", 1024009ea47eSEdward Tomasz Napierala data_segment_len, sizeof(sense_len) + sense_len); 1025009ea47eSEdward Tomasz Napierala if (sense_len > csio->sense_len) { 1026009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "truncating sense from %d to %d", 1027009ea47eSEdward Tomasz Napierala sense_len, csio->sense_len); 1028009ea47eSEdward Tomasz Napierala sense_len = csio->sense_len; 1029009ea47eSEdward Tomasz Napierala } 1030009ea47eSEdward Tomasz Napierala icl_pdu_get_data(response, sizeof(sense_len), &csio->sense_data, sense_len); 1031009ea47eSEdward Tomasz Napierala csio->sense_resid = csio->sense_len - sense_len; 103273e2e95dSAlexander Motin ccb->ccb_h.status |= CAM_AUTOSNS_VALID; 1033009ea47eSEdward Tomasz Napierala } 1034009ea47eSEdward Tomasz Napierala 1035009ea47eSEdward Tomasz Napierala out: 1036009ea47eSEdward Tomasz Napierala if (bhssr->bhssr_flags & BHSSR_FLAGS_RESIDUAL_UNDERFLOW) 1037009ea47eSEdward Tomasz Napierala csio->resid = ntohl(bhssr->bhssr_residual_count); 1038009ea47eSEdward Tomasz Napierala 1039009ea47eSEdward Tomasz Napierala if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) { 104073e2e95dSAlexander Motin KASSERT(received <= csio->dxfer_len, 104173e2e95dSAlexander Motin ("received > csio->dxfer_len")); 104273e2e95dSAlexander Motin if (received < csio->dxfer_len) { 104373e2e95dSAlexander Motin if (csio->resid != csio->dxfer_len - received) { 1044009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "underflow mismatch: " 1045009ea47eSEdward Tomasz Napierala "target indicates %d, we calculated %zd", 104673e2e95dSAlexander Motin csio->resid, csio->dxfer_len - received); 1047009ea47eSEdward Tomasz Napierala } 104873e2e95dSAlexander Motin csio->resid = csio->dxfer_len - received; 1049009ea47eSEdward Tomasz Napierala } 1050009ea47eSEdward Tomasz Napierala } 1051009ea47eSEdward Tomasz Napierala 105273e2e95dSAlexander Motin xpt_done(ccb); 1053009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1054009ea47eSEdward Tomasz Napierala } 1055009ea47eSEdward Tomasz Napierala 1056009ea47eSEdward Tomasz Napierala static void 1057aa75114cSAlexander Motin iscsi_pdu_handle_task_response(struct icl_pdu *response) 1058aa75114cSAlexander Motin { 1059aa75114cSAlexander Motin struct iscsi_bhs_task_management_response *bhstmr; 1060aa75114cSAlexander Motin struct iscsi_outstanding *io, *aio; 1061aa75114cSAlexander Motin struct iscsi_session *is; 1062aa75114cSAlexander Motin 1063aa75114cSAlexander Motin is = PDU_SESSION(response); 1064aa75114cSAlexander Motin 1065aa75114cSAlexander Motin bhstmr = (struct iscsi_bhs_task_management_response *)response->ip_bhs; 1066aa75114cSAlexander Motin io = iscsi_outstanding_find(is, bhstmr->bhstmr_initiator_task_tag); 1067aa75114cSAlexander Motin if (io == NULL || io->io_ccb != NULL) { 1068aa75114cSAlexander Motin ISCSI_SESSION_WARN(is, "bad itt 0x%x", 1069aa75114cSAlexander Motin bhstmr->bhstmr_initiator_task_tag); 1070aa75114cSAlexander Motin icl_pdu_free(response); 1071aa75114cSAlexander Motin iscsi_session_reconnect(is); 1072aa75114cSAlexander Motin return; 1073aa75114cSAlexander Motin } 1074aa75114cSAlexander Motin 1075aa75114cSAlexander Motin if (bhstmr->bhstmr_response != BHSTMR_RESPONSE_FUNCTION_COMPLETE) { 1076aa75114cSAlexander Motin ISCSI_SESSION_WARN(is, "task response 0x%x", 1077aa75114cSAlexander Motin bhstmr->bhstmr_response); 1078aa75114cSAlexander Motin } else { 10793dd2a7a5SAlexander Motin aio = iscsi_outstanding_find(is, io->io_referenced_task_tag); 1080aa75114cSAlexander Motin if (aio != NULL && aio->io_ccb != NULL) 1081ad10496cSAndriy Gapon iscsi_session_terminate_task(is, aio, CAM_REQ_ABORTED); 1082aa75114cSAlexander Motin } 1083aa75114cSAlexander Motin 1084aa75114cSAlexander Motin iscsi_outstanding_remove(is, io); 1085aa75114cSAlexander Motin icl_pdu_free(response); 1086aa75114cSAlexander Motin } 1087aa75114cSAlexander Motin 1088aa75114cSAlexander Motin static void 1089009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_data_in(struct icl_pdu *response) 1090009ea47eSEdward Tomasz Napierala { 1091009ea47eSEdward Tomasz Napierala struct iscsi_bhs_data_in *bhsdi; 1092009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io; 1093009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 109473e2e95dSAlexander Motin union ccb *ccb; 1095009ea47eSEdward Tomasz Napierala struct ccb_scsiio *csio; 109673e2e95dSAlexander Motin size_t data_segment_len, received, oreceived; 1097009ea47eSEdward Tomasz Napierala 1098009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 1099009ea47eSEdward Tomasz Napierala bhsdi = (struct iscsi_bhs_data_in *)response->ip_bhs; 1100009ea47eSEdward Tomasz Napierala io = iscsi_outstanding_find(is, bhsdi->bhsdi_initiator_task_tag); 1101aa75114cSAlexander Motin if (io == NULL || io->io_ccb == NULL) { 1102009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "bad itt 0x%x", bhsdi->bhsdi_initiator_task_tag); 1103009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1104009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1105c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 1106009ea47eSEdward Tomasz Napierala return; 1107009ea47eSEdward Tomasz Napierala } 1108009ea47eSEdward Tomasz Napierala 11094f0f5bf9SJohn Baldwin if (io->io_datasn != ntohl(bhsdi->bhsdi_datasn)) { 11104f0f5bf9SJohn Baldwin ISCSI_SESSION_WARN(is, "received Data-In PDU with " 11114f0f5bf9SJohn Baldwin "DataSN %u, while expected %u; dropping connection", 11124f0f5bf9SJohn Baldwin ntohl(bhsdi->bhsdi_datasn), io->io_datasn); 11134f0f5bf9SJohn Baldwin icl_pdu_free(response); 11144f0f5bf9SJohn Baldwin iscsi_session_reconnect(is); 11154f0f5bf9SJohn Baldwin ISCSI_SESSION_UNLOCK(is); 11164f0f5bf9SJohn Baldwin return; 11174f0f5bf9SJohn Baldwin } 11184f0f5bf9SJohn Baldwin io->io_datasn += response->ip_additional_pdus + 1; 11194f0f5bf9SJohn Baldwin 1120009ea47eSEdward Tomasz Napierala data_segment_len = icl_pdu_data_segment_length(response); 1121009ea47eSEdward Tomasz Napierala if (data_segment_len == 0) { 1122009ea47eSEdward Tomasz Napierala /* 1123009ea47eSEdward Tomasz Napierala * "The sending of 0 length data segments should be avoided, 1124009ea47eSEdward Tomasz Napierala * but initiators and targets MUST be able to properly receive 1125009ea47eSEdward Tomasz Napierala * 0 length data segments." 1126009ea47eSEdward Tomasz Napierala */ 1127c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 1128009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1129009ea47eSEdward Tomasz Napierala return; 1130009ea47eSEdward Tomasz Napierala } 1131009ea47eSEdward Tomasz Napierala 1132009ea47eSEdward Tomasz Napierala /* 1133009ea47eSEdward Tomasz Napierala * We need to track this for security reasons - without it, malicious target 1134009ea47eSEdward Tomasz Napierala * could respond to SCSI READ without sending Data-In PDUs, which would result 1135009ea47eSEdward Tomasz Napierala * in read operation on the initiator side returning random kernel data. 1136009ea47eSEdward Tomasz Napierala */ 1137009ea47eSEdward Tomasz Napierala if (ntohl(bhsdi->bhsdi_buffer_offset) != io->io_received) { 1138009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "data out of order; expected offset %zd, got %zd", 1139009ea47eSEdward Tomasz Napierala io->io_received, (size_t)ntohl(bhsdi->bhsdi_buffer_offset)); 1140009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1141009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1142c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 1143009ea47eSEdward Tomasz Napierala return; 1144009ea47eSEdward Tomasz Napierala } 1145009ea47eSEdward Tomasz Napierala 114673e2e95dSAlexander Motin ccb = io->io_ccb; 114773e2e95dSAlexander Motin csio = &ccb->csio; 1148009ea47eSEdward Tomasz Napierala 1149d43c9ec1SEdward Tomasz Napierala if (io->io_received + data_segment_len > csio->dxfer_len) { 1150009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "oversize data segment (%zd bytes " 1151d43c9ec1SEdward Tomasz Napierala "at offset %zd, buffer is %d)", 1152d43c9ec1SEdward Tomasz Napierala data_segment_len, io->io_received, csio->dxfer_len); 1153009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1154009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1155c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 1156009ea47eSEdward Tomasz Napierala return; 1157009ea47eSEdward Tomasz Napierala } 1158009ea47eSEdward Tomasz Napierala 115973e2e95dSAlexander Motin oreceived = io->io_received; 1160009ea47eSEdward Tomasz Napierala io->io_received += data_segment_len; 116173e2e95dSAlexander Motin received = io->io_received; 1162c215ad3aSAlexander Motin if ((bhsdi->bhsdi_flags & BHSDI_FLAGS_S) != 0) 1163c215ad3aSAlexander Motin iscsi_outstanding_remove(is, io); 1164c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 1165c215ad3aSAlexander Motin 116673e2e95dSAlexander Motin icl_pdu_get_data(response, 0, csio->data_ptr + oreceived, data_segment_len); 1167009ea47eSEdward Tomasz Napierala 1168009ea47eSEdward Tomasz Napierala /* 1169009ea47eSEdward Tomasz Napierala * XXX: Check F. 1170009ea47eSEdward Tomasz Napierala */ 117169647b7bSEdward Tomasz Napierala if ((bhsdi->bhsdi_flags & BHSDI_FLAGS_S) == 0) { 117269647b7bSEdward Tomasz Napierala /* 117369647b7bSEdward Tomasz Napierala * Nothing more to do. 117469647b7bSEdward Tomasz Napierala */ 117569647b7bSEdward Tomasz Napierala icl_pdu_free(response); 117669647b7bSEdward Tomasz Napierala return; 117769647b7bSEdward Tomasz Napierala } 117869647b7bSEdward Tomasz Napierala 1179009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "got S flag; status 0x%x", bhsdi->bhsdi_status); 1180009ea47eSEdward Tomasz Napierala if (bhsdi->bhsdi_status == 0) { 118173e2e95dSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP; 1182009ea47eSEdward Tomasz Napierala } else { 118373e2e95dSAlexander Motin if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 118473e2e95dSAlexander Motin xpt_freeze_devq(ccb->ccb_h.path, 1); 1185009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 1186009ea47eSEdward Tomasz Napierala } 118773e2e95dSAlexander Motin ccb->ccb_h.status = CAM_SCSI_STATUS_ERROR | CAM_DEV_QFRZN; 1188009ea47eSEdward Tomasz Napierala csio->scsi_status = bhsdi->bhsdi_status; 1189009ea47eSEdward Tomasz Napierala } 119069647b7bSEdward Tomasz Napierala 119169647b7bSEdward Tomasz Napierala if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) { 119273e2e95dSAlexander Motin KASSERT(received <= csio->dxfer_len, 119373e2e95dSAlexander Motin ("received > csio->dxfer_len")); 119473e2e95dSAlexander Motin if (received < csio->dxfer_len) { 119569647b7bSEdward Tomasz Napierala csio->resid = ntohl(bhsdi->bhsdi_residual_count); 119673e2e95dSAlexander Motin if (csio->resid != csio->dxfer_len - received) { 119769647b7bSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "underflow mismatch: " 119869647b7bSEdward Tomasz Napierala "target indicates %d, we calculated %zd", 119973e2e95dSAlexander Motin csio->resid, csio->dxfer_len - received); 120069647b7bSEdward Tomasz Napierala } 120173e2e95dSAlexander Motin csio->resid = csio->dxfer_len - received; 120269647b7bSEdward Tomasz Napierala } 1203009ea47eSEdward Tomasz Napierala } 1204009ea47eSEdward Tomasz Napierala 120573e2e95dSAlexander Motin xpt_done(ccb); 1206009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1207009ea47eSEdward Tomasz Napierala } 1208009ea47eSEdward Tomasz Napierala 1209009ea47eSEdward Tomasz Napierala static void 1210009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_logout_response(struct icl_pdu *response) 1211009ea47eSEdward Tomasz Napierala { 1212009ea47eSEdward Tomasz Napierala 1213009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(PDU_SESSION(response), "logout response"); 1214009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1215009ea47eSEdward Tomasz Napierala } 1216009ea47eSEdward Tomasz Napierala 1217009ea47eSEdward Tomasz Napierala static void 1218009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_r2t(struct icl_pdu *response) 1219009ea47eSEdward Tomasz Napierala { 1220009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 1221009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1222009ea47eSEdward Tomasz Napierala struct iscsi_bhs_r2t *bhsr2t; 1223009ea47eSEdward Tomasz Napierala struct iscsi_bhs_data_out *bhsdo; 1224009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io; 1225009ea47eSEdward Tomasz Napierala struct ccb_scsiio *csio; 1226f0594f52SJohn Baldwin size_t off, len, max_send_data_segment_length, total_len; 1227009ea47eSEdward Tomasz Napierala int error; 12283dd2a7a5SAlexander Motin uint32_t datasn = 0; 1229009ea47eSEdward Tomasz Napierala 1230009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 1231009ea47eSEdward Tomasz Napierala 1232009ea47eSEdward Tomasz Napierala bhsr2t = (struct iscsi_bhs_r2t *)response->ip_bhs; 1233009ea47eSEdward Tomasz Napierala io = iscsi_outstanding_find(is, bhsr2t->bhsr2t_initiator_task_tag); 1234aa75114cSAlexander Motin if (io == NULL || io->io_ccb == NULL) { 1235009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "bad itt 0x%x; reconnecting", 1236009ea47eSEdward Tomasz Napierala bhsr2t->bhsr2t_initiator_task_tag); 1237009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1238009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1239009ea47eSEdward Tomasz Napierala return; 1240009ea47eSEdward Tomasz Napierala } 1241009ea47eSEdward Tomasz Napierala 1242009ea47eSEdward Tomasz Napierala csio = &io->io_ccb->csio; 1243009ea47eSEdward Tomasz Napierala 1244009ea47eSEdward Tomasz Napierala if ((csio->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_OUT) { 1245009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "received R2T for read command; reconnecting"); 1246009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1247009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1248009ea47eSEdward Tomasz Napierala return; 1249009ea47eSEdward Tomasz Napierala } 1250009ea47eSEdward Tomasz Napierala 1251009ea47eSEdward Tomasz Napierala /* 1252009ea47eSEdward Tomasz Napierala * XXX: Verify R2TSN. 1253009ea47eSEdward Tomasz Napierala */ 1254009ea47eSEdward Tomasz Napierala 1255009ea47eSEdward Tomasz Napierala off = ntohl(bhsr2t->bhsr2t_buffer_offset); 1256d43c9ec1SEdward Tomasz Napierala if (off > csio->dxfer_len) { 1257d43c9ec1SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target requested invalid offset " 1258d43c9ec1SEdward Tomasz Napierala "%zd, buffer is is %d; reconnecting", off, csio->dxfer_len); 1259d43c9ec1SEdward Tomasz Napierala icl_pdu_free(response); 1260d43c9ec1SEdward Tomasz Napierala iscsi_session_reconnect(is); 1261d43c9ec1SEdward Tomasz Napierala return; 1262d43c9ec1SEdward Tomasz Napierala } 1263d43c9ec1SEdward Tomasz Napierala 1264009ea47eSEdward Tomasz Napierala total_len = ntohl(bhsr2t->bhsr2t_desired_data_transfer_length); 1265d43c9ec1SEdward Tomasz Napierala if (total_len == 0 || total_len > csio->dxfer_len) { 1266d43c9ec1SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target requested invalid length " 1267d43c9ec1SEdward Tomasz Napierala "%zd, buffer is %d; reconnecting", total_len, csio->dxfer_len); 1268d43c9ec1SEdward Tomasz Napierala icl_pdu_free(response); 1269d43c9ec1SEdward Tomasz Napierala iscsi_session_reconnect(is); 1270d43c9ec1SEdward Tomasz Napierala return; 1271d43c9ec1SEdward Tomasz Napierala } 1272009ea47eSEdward Tomasz Napierala 1273009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "r2t; off %zd, len %zd", off, total_len); 1274009ea47eSEdward Tomasz Napierala 1275f0594f52SJohn Baldwin if (is->is_conn->ic_hw_isomax != 0) 1276f0594f52SJohn Baldwin max_send_data_segment_length = is->is_conn->ic_hw_isomax; 1277f0594f52SJohn Baldwin else 1278f0594f52SJohn Baldwin max_send_data_segment_length = 1279f0594f52SJohn Baldwin is->is_conn->ic_max_send_data_segment_length; 1280009ea47eSEdward Tomasz Napierala for (;;) { 1281009ea47eSEdward Tomasz Napierala len = total_len; 1282009ea47eSEdward Tomasz Napierala 1283f0594f52SJohn Baldwin if (len > max_send_data_segment_length) 1284f0594f52SJohn Baldwin len = max_send_data_segment_length; 1285009ea47eSEdward Tomasz Napierala 1286009ea47eSEdward Tomasz Napierala if (off + len > csio->dxfer_len) { 1287d43c9ec1SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target requested invalid " 1288d43c9ec1SEdward Tomasz Napierala "length/offset %zd, buffer is %d; reconnecting", 1289009ea47eSEdward Tomasz Napierala off + len, csio->dxfer_len); 1290009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1291009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1292009ea47eSEdward Tomasz Napierala return; 1293009ea47eSEdward Tomasz Napierala } 1294009ea47eSEdward Tomasz Napierala 1295d2d52b00SEdward Tomasz Napierala request = icl_pdu_new(response->ip_conn, M_NOWAIT); 1296009ea47eSEdward Tomasz Napierala if (request == NULL) { 1297009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1298009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1299009ea47eSEdward Tomasz Napierala return; 1300009ea47eSEdward Tomasz Napierala } 1301009ea47eSEdward Tomasz Napierala 1302009ea47eSEdward Tomasz Napierala bhsdo = (struct iscsi_bhs_data_out *)request->ip_bhs; 1303009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_opcode = ISCSI_BHS_OPCODE_SCSI_DATA_OUT; 1304009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_lun = bhsr2t->bhsr2t_lun; 1305009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_initiator_task_tag = 1306009ea47eSEdward Tomasz Napierala bhsr2t->bhsr2t_initiator_task_tag; 1307009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_target_transfer_tag = 1308009ea47eSEdward Tomasz Napierala bhsr2t->bhsr2t_target_transfer_tag; 1309f0594f52SJohn Baldwin bhsdo->bhsdo_datasn = htonl(datasn); 1310009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_buffer_offset = htonl(off); 1311d43c9ec1SEdward Tomasz Napierala error = icl_pdu_append_data(request, csio->data_ptr + off, len, 1312*9c7a4875SJohn Baldwin M_NOWAIT | ICL_NOCOPY); 1313009ea47eSEdward Tomasz Napierala if (error != 0) { 1314d43c9ec1SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate memory; " 1315d43c9ec1SEdward Tomasz Napierala "reconnecting"); 1316009ea47eSEdward Tomasz Napierala icl_pdu_free(request); 1317009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1318009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1319009ea47eSEdward Tomasz Napierala return; 1320009ea47eSEdward Tomasz Napierala } 1321009ea47eSEdward Tomasz Napierala 1322f0594f52SJohn Baldwin datasn += howmany(len, 1323f0594f52SJohn Baldwin is->is_conn->ic_max_send_data_segment_length); 1324009ea47eSEdward Tomasz Napierala off += len; 1325009ea47eSEdward Tomasz Napierala total_len -= len; 1326009ea47eSEdward Tomasz Napierala 1327009ea47eSEdward Tomasz Napierala if (total_len == 0) { 1328009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_flags |= BHSDO_FLAGS_F; 1329009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "setting F, off %zd", off); 1330009ea47eSEdward Tomasz Napierala } else { 1331009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "not finished, off %zd", off); 1332009ea47eSEdward Tomasz Napierala } 1333009ea47eSEdward Tomasz Napierala 1334009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(request); 1335009ea47eSEdward Tomasz Napierala 1336009ea47eSEdward Tomasz Napierala if (total_len == 0) 1337009ea47eSEdward Tomasz Napierala break; 1338009ea47eSEdward Tomasz Napierala } 1339009ea47eSEdward Tomasz Napierala 1340009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1341009ea47eSEdward Tomasz Napierala } 1342009ea47eSEdward Tomasz Napierala 1343009ea47eSEdward Tomasz Napierala static void 1344009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_async_message(struct icl_pdu *response) 1345009ea47eSEdward Tomasz Napierala { 1346009ea47eSEdward Tomasz Napierala struct iscsi_bhs_asynchronous_message *bhsam; 1347009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1348009ea47eSEdward Tomasz Napierala 1349009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 1350009ea47eSEdward Tomasz Napierala bhsam = (struct iscsi_bhs_asynchronous_message *)response->ip_bhs; 1351009ea47eSEdward Tomasz Napierala switch (bhsam->bhsam_async_event) { 1352009ea47eSEdward Tomasz Napierala case BHSAM_EVENT_TARGET_REQUESTS_LOGOUT: 1353009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target requests logout; removing session"); 1354009ea47eSEdward Tomasz Napierala iscsi_session_logout(is); 1355009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1356009ea47eSEdward Tomasz Napierala break; 1357009ea47eSEdward Tomasz Napierala case BHSAM_EVENT_TARGET_TERMINATES_CONNECTION: 13586960c4e1SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target indicates it will drop the connection"); 1359009ea47eSEdward Tomasz Napierala break; 1360009ea47eSEdward Tomasz Napierala case BHSAM_EVENT_TARGET_TERMINATES_SESSION: 13616960c4e1SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target indicates it will drop the session"); 1362009ea47eSEdward Tomasz Napierala break; 1363009ea47eSEdward Tomasz Napierala default: 1364009ea47eSEdward Tomasz Napierala /* 1365009ea47eSEdward Tomasz Napierala * XXX: Technically, we're obligated to also handle 1366009ea47eSEdward Tomasz Napierala * parameter renegotiation. 1367009ea47eSEdward Tomasz Napierala */ 1368009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "ignoring AsyncEvent %d", bhsam->bhsam_async_event); 1369009ea47eSEdward Tomasz Napierala break; 1370009ea47eSEdward Tomasz Napierala } 1371009ea47eSEdward Tomasz Napierala 1372009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1373009ea47eSEdward Tomasz Napierala } 1374009ea47eSEdward Tomasz Napierala 1375009ea47eSEdward Tomasz Napierala static void 1376009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_reject(struct icl_pdu *response) 1377009ea47eSEdward Tomasz Napierala { 1378009ea47eSEdward Tomasz Napierala struct iscsi_bhs_reject *bhsr; 1379009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1380009ea47eSEdward Tomasz Napierala 1381009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 1382009ea47eSEdward Tomasz Napierala bhsr = (struct iscsi_bhs_reject *)response->ip_bhs; 1383009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "received Reject PDU, reason 0x%x; protocol error?", 1384009ea47eSEdward Tomasz Napierala bhsr->bhsr_reason); 1385009ea47eSEdward Tomasz Napierala 1386009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1387009ea47eSEdward Tomasz Napierala } 1388009ea47eSEdward Tomasz Napierala 1389009ea47eSEdward Tomasz Napierala static int 1390009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_wait(struct iscsi_softc *sc, 1391009ea47eSEdward Tomasz Napierala struct iscsi_daemon_request *request) 1392009ea47eSEdward Tomasz Napierala { 1393009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 139497b84d34SNavdeep Parhar struct icl_drv_limits idl; 1395009ea47eSEdward Tomasz Napierala int error; 1396009ea47eSEdward Tomasz Napierala 1397009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1398009ea47eSEdward Tomasz Napierala for (;;) { 1399009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 14002be596adSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1401ba165a31SEdward Tomasz Napierala if (is->is_conf.isc_enable == 0 && 1402ba165a31SEdward Tomasz Napierala is->is_conf.isc_discovery == 0) { 1403ba165a31SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1404ba165a31SEdward Tomasz Napierala continue; 1405ba165a31SEdward Tomasz Napierala } 1406009ea47eSEdward Tomasz Napierala if (is->is_waiting_for_iscsid) 1407009ea47eSEdward Tomasz Napierala break; 14082be596adSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1409009ea47eSEdward Tomasz Napierala } 1410009ea47eSEdward Tomasz Napierala 1411009ea47eSEdward Tomasz Napierala if (is == NULL) { 141289df4847SJohn Baldwin if (sc->sc_unloading) { 141389df4847SJohn Baldwin sx_sunlock(&sc->sc_lock); 141489df4847SJohn Baldwin return (ENXIO); 141589df4847SJohn Baldwin } 141689df4847SJohn Baldwin 1417009ea47eSEdward Tomasz Napierala /* 1418009ea47eSEdward Tomasz Napierala * No session requires attention from iscsid(8); wait. 1419009ea47eSEdward Tomasz Napierala */ 1420009ea47eSEdward Tomasz Napierala error = cv_wait_sig(&sc->sc_cv, &sc->sc_lock); 1421009ea47eSEdward Tomasz Napierala if (error != 0) { 1422009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1423009ea47eSEdward Tomasz Napierala return (error); 1424009ea47eSEdward Tomasz Napierala } 1425009ea47eSEdward Tomasz Napierala continue; 1426009ea47eSEdward Tomasz Napierala } 1427009ea47eSEdward Tomasz Napierala 1428009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = false; 1429009ea47eSEdward Tomasz Napierala is->is_login_phase = true; 1430009ea47eSEdward Tomasz Napierala is->is_reason[0] = '\0'; 1431009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1432009ea47eSEdward Tomasz Napierala 1433009ea47eSEdward Tomasz Napierala request->idr_session_id = is->is_id; 1434ffe82e05SAlexander Motin memcpy(&request->idr_isid, &is->is_isid, 1435ffe82e05SAlexander Motin sizeof(request->idr_isid)); 1436ffe82e05SAlexander Motin request->idr_tsih = 0; /* New or reinstated session. */ 1437009ea47eSEdward Tomasz Napierala memcpy(&request->idr_conf, &is->is_conf, 1438009ea47eSEdward Tomasz Napierala sizeof(request->idr_conf)); 1439009ea47eSEdward Tomasz Napierala 144082babffbSEdward Tomasz Napierala error = icl_limits(is->is_conf.isc_offload, 144197b84d34SNavdeep Parhar is->is_conf.isc_iser, &idl); 144282babffbSEdward Tomasz Napierala if (error != 0) { 144382babffbSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "icl_limits for offload \"%s\" " 144482babffbSEdward Tomasz Napierala "failed with error %d", is->is_conf.isc_offload, 144582babffbSEdward Tomasz Napierala error); 144682babffbSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 144782babffbSEdward Tomasz Napierala return (error); 144882babffbSEdward Tomasz Napierala } 144997b84d34SNavdeep Parhar request->idr_limits.isl_max_recv_data_segment_length = 145097b84d34SNavdeep Parhar idl.idl_max_recv_data_segment_length; 145197b84d34SNavdeep Parhar request->idr_limits.isl_max_send_data_segment_length = 145248214203SNavdeep Parhar idl.idl_max_send_data_segment_length; 145397b84d34SNavdeep Parhar request->idr_limits.isl_max_burst_length = 145497b84d34SNavdeep Parhar idl.idl_max_burst_length; 145597b84d34SNavdeep Parhar request->idr_limits.isl_first_burst_length = 145697b84d34SNavdeep Parhar idl.idl_first_burst_length; 145782babffbSEdward Tomasz Napierala 1458009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1459009ea47eSEdward Tomasz Napierala return (0); 1460009ea47eSEdward Tomasz Napierala } 1461009ea47eSEdward Tomasz Napierala } 1462009ea47eSEdward Tomasz Napierala 1463009ea47eSEdward Tomasz Napierala static int 1464009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_handoff(struct iscsi_softc *sc, 1465009ea47eSEdward Tomasz Napierala struct iscsi_daemon_handoff *handoff) 1466009ea47eSEdward Tomasz Napierala { 1467009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1468f5cadbc4SNavdeep Parhar struct icl_conn *ic; 1469009ea47eSEdward Tomasz Napierala int error; 1470009ea47eSEdward Tomasz Napierala 1471009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1472009ea47eSEdward Tomasz Napierala 1473009ea47eSEdward Tomasz Napierala /* 1474009ea47eSEdward Tomasz Napierala * Find the session to hand off socket to. 1475009ea47eSEdward Tomasz Napierala */ 1476009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1477009ea47eSEdward Tomasz Napierala if (is->is_id == handoff->idh_session_id) 1478009ea47eSEdward Tomasz Napierala break; 1479009ea47eSEdward Tomasz Napierala } 1480009ea47eSEdward Tomasz Napierala if (is == NULL) { 1481009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1482009ea47eSEdward Tomasz Napierala return (ESRCH); 1483009ea47eSEdward Tomasz Napierala } 1484009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1485f5cadbc4SNavdeep Parhar ic = is->is_conn; 1486009ea47eSEdward Tomasz Napierala if (is->is_conf.isc_discovery || is->is_terminating) { 1487009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1488009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1489009ea47eSEdward Tomasz Napierala return (EINVAL); 1490009ea47eSEdward Tomasz Napierala } 14910260023fSEdward Tomasz Napierala if (is->is_connected) { 14920260023fSEdward Tomasz Napierala /* 14930260023fSEdward Tomasz Napierala * This might have happened because another iscsid(8) 14940260023fSEdward Tomasz Napierala * instance handed off the connection in the meantime. 14950260023fSEdward Tomasz Napierala * Just return. 14960260023fSEdward Tomasz Napierala */ 14970260023fSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "handoff on already connected " 14980260023fSEdward Tomasz Napierala "session"); 14990260023fSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 15000260023fSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 15010260023fSEdward Tomasz Napierala return (EBUSY); 15020260023fSEdward Tomasz Napierala } 1503009ea47eSEdward Tomasz Napierala 1504009ea47eSEdward Tomasz Napierala strlcpy(is->is_target_alias, handoff->idh_target_alias, 1505009ea47eSEdward Tomasz Napierala sizeof(is->is_target_alias)); 1506ffe82e05SAlexander Motin is->is_tsih = handoff->idh_tsih; 1507009ea47eSEdward Tomasz Napierala is->is_statsn = handoff->idh_statsn; 15087dbbd1aeSAlexander Motin is->is_protocol_level = handoff->idh_protocol_level; 1509009ea47eSEdward Tomasz Napierala is->is_initial_r2t = handoff->idh_initial_r2t; 1510009ea47eSEdward Tomasz Napierala is->is_immediate_data = handoff->idh_immediate_data; 1511c8b73c2cSNavdeep Parhar 15120cc7d64aSJohn Baldwin ic->ic_max_recv_data_segment_length = 151397b84d34SNavdeep Parhar handoff->idh_max_recv_data_segment_length; 15140cc7d64aSJohn Baldwin ic->ic_max_send_data_segment_length = 151597b84d34SNavdeep Parhar handoff->idh_max_send_data_segment_length; 1516009ea47eSEdward Tomasz Napierala is->is_max_burst_length = handoff->idh_max_burst_length; 1517009ea47eSEdward Tomasz Napierala is->is_first_burst_length = handoff->idh_first_burst_length; 1518009ea47eSEdward Tomasz Napierala 1519009ea47eSEdward Tomasz Napierala if (handoff->idh_header_digest == ISCSI_DIGEST_CRC32C) 1520f5cadbc4SNavdeep Parhar ic->ic_header_crc32c = true; 1521009ea47eSEdward Tomasz Napierala else 1522f5cadbc4SNavdeep Parhar ic->ic_header_crc32c = false; 1523009ea47eSEdward Tomasz Napierala if (handoff->idh_data_digest == ISCSI_DIGEST_CRC32C) 1524f5cadbc4SNavdeep Parhar ic->ic_data_crc32c = true; 1525009ea47eSEdward Tomasz Napierala else 1526f5cadbc4SNavdeep Parhar ic->ic_data_crc32c = false; 1527b218ca6fSEdward Tomasz Napierala ic->ic_maxtags = maxtags; 1528009ea47eSEdward Tomasz Napierala 1529009ea47eSEdward Tomasz Napierala is->is_cmdsn = 0; 1530cf23c509SEdward Tomasz Napierala is->is_expcmdsn = 0; 1531cf23c509SEdward Tomasz Napierala is->is_maxcmdsn = 0; 1532009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = false; 1533009ea47eSEdward Tomasz Napierala is->is_login_phase = false; 1534009ea47eSEdward Tomasz Napierala is->is_timeout = 0; 1535bd6bb493SRichard Scheffenegger is->is_ping_timeout = is->is_conf.isc_ping_timeout; 1536bd6bb493SRichard Scheffenegger if (is->is_ping_timeout < 0) 1537bd6bb493SRichard Scheffenegger is->is_ping_timeout = ping_timeout; 1538bd6bb493SRichard Scheffenegger is->is_login_timeout = is->is_conf.isc_login_timeout; 1539bd6bb493SRichard Scheffenegger if (is->is_login_timeout < 0) 1540bd6bb493SRichard Scheffenegger is->is_login_timeout = login_timeout; 1541009ea47eSEdward Tomasz Napierala is->is_connected = true; 1542009ea47eSEdward Tomasz Napierala is->is_reason[0] = '\0'; 1543009ea47eSEdward Tomasz Napierala 1544009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1545009ea47eSEdward Tomasz Napierala 154657a4f20bSEdward Tomasz Napierala /* 1547906a424bSEdward Tomasz Napierala * If we're going through the proxy, the idh_socket will be 0, 1548906a424bSEdward Tomasz Napierala * and the ICL module can simply ignore this call. It can also 1549906a424bSEdward Tomasz Napierala * use it to determine it's no longer in the Login phase. 155057a4f20bSEdward Tomasz Napierala */ 1551f5cadbc4SNavdeep Parhar error = icl_conn_handoff(ic, handoff->idh_socket); 1552009ea47eSEdward Tomasz Napierala if (error != 0) { 1553009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1554009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1555009ea47eSEdward Tomasz Napierala return (error); 1556009ea47eSEdward Tomasz Napierala } 1557009ea47eSEdward Tomasz Napierala 1558009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1559009ea47eSEdward Tomasz Napierala 1560009ea47eSEdward Tomasz Napierala if (is->is_sim != NULL) { 1561009ea47eSEdward Tomasz Napierala /* 1562009ea47eSEdward Tomasz Napierala * When reconnecting, there already is SIM allocated for the session. 1563009ea47eSEdward Tomasz Napierala */ 1564009ea47eSEdward Tomasz Napierala KASSERT(is->is_simq_frozen, ("reconnect without frozen simq")); 1565009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1566009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "releasing"); 1567009ea47eSEdward Tomasz Napierala is->is_simq_frozen = false; 1568186bcdaaSEdward Tomasz Napierala xpt_release_simq(is->is_sim, 1); 1569009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1570009ea47eSEdward Tomasz Napierala 1571009ea47eSEdward Tomasz Napierala } else { 1572009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1573b218ca6fSEdward Tomasz Napierala is->is_devq = cam_simq_alloc(ic->ic_maxtags); 1574009ea47eSEdward Tomasz Napierala if (is->is_devq == NULL) { 1575fa669505SKa Ho Ng ISCSI_SESSION_UNLOCK(is); 1576009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate simq"); 1577009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1578009ea47eSEdward Tomasz Napierala return (ENOMEM); 1579009ea47eSEdward Tomasz Napierala } 1580009ea47eSEdward Tomasz Napierala 158147769bc5SJohn Baldwin is->is_sim = cam_sim_alloc(iscsi_action, NULL, "iscsi", 1582009ea47eSEdward Tomasz Napierala is, is->is_id /* unit */, &is->is_lock, 1583b218ca6fSEdward Tomasz Napierala 1, ic->ic_maxtags, is->is_devq); 1584009ea47eSEdward Tomasz Napierala if (is->is_sim == NULL) { 1585009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1586009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate SIM"); 1587009ea47eSEdward Tomasz Napierala cam_simq_free(is->is_devq); 1588009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1589009ea47eSEdward Tomasz Napierala return (ENOMEM); 1590009ea47eSEdward Tomasz Napierala } 1591009ea47eSEdward Tomasz Napierala 159230f8afd0SWarner Losh if (xpt_bus_register(is->is_sim, NULL, 0) != 0) { 1593009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1594009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to register bus"); 1595009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1596009ea47eSEdward Tomasz Napierala return (ENOMEM); 1597009ea47eSEdward Tomasz Napierala } 1598009ea47eSEdward Tomasz Napierala 1599009ea47eSEdward Tomasz Napierala error = xpt_create_path(&is->is_path, /*periph*/NULL, 1600009ea47eSEdward Tomasz Napierala cam_sim_path(is->is_sim), CAM_TARGET_WILDCARD, 1601009ea47eSEdward Tomasz Napierala CAM_LUN_WILDCARD); 1602009ea47eSEdward Tomasz Napierala if (error != CAM_REQ_CMP) { 1603009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1604009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to create path"); 1605009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1606009ea47eSEdward Tomasz Napierala return (ENOMEM); 1607009ea47eSEdward Tomasz Napierala } 1608009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1609009ea47eSEdward Tomasz Napierala } 1610009ea47eSEdward Tomasz Napierala 1611009ea47eSEdward Tomasz Napierala return (0); 1612009ea47eSEdward Tomasz Napierala } 1613009ea47eSEdward Tomasz Napierala 1614009ea47eSEdward Tomasz Napierala static int 1615009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_fail(struct iscsi_softc *sc, 1616009ea47eSEdward Tomasz Napierala struct iscsi_daemon_fail *fail) 1617009ea47eSEdward Tomasz Napierala { 1618009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1619009ea47eSEdward Tomasz Napierala 1620009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1621009ea47eSEdward Tomasz Napierala 1622009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1623009ea47eSEdward Tomasz Napierala if (is->is_id == fail->idf_session_id) 1624009ea47eSEdward Tomasz Napierala break; 1625009ea47eSEdward Tomasz Napierala } 1626009ea47eSEdward Tomasz Napierala if (is == NULL) { 1627009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1628009ea47eSEdward Tomasz Napierala return (ESRCH); 1629009ea47eSEdward Tomasz Napierala } 1630009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1631009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "iscsid(8) failed: %s", 1632009ea47eSEdward Tomasz Napierala fail->idf_reason); 1633009ea47eSEdward Tomasz Napierala strlcpy(is->is_reason, fail->idf_reason, sizeof(is->is_reason)); 1634009ea47eSEdward Tomasz Napierala //is->is_waiting_for_iscsid = false; 1635009ea47eSEdward Tomasz Napierala //is->is_login_phase = true; 1636009ea47eSEdward Tomasz Napierala //iscsi_session_reconnect(is); 1637009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1638009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1639009ea47eSEdward Tomasz Napierala 1640009ea47eSEdward Tomasz Napierala return (0); 1641009ea47eSEdward Tomasz Napierala } 1642009ea47eSEdward Tomasz Napierala 1643009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 1644009ea47eSEdward Tomasz Napierala static int 1645009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_connect(struct iscsi_softc *sc, 1646009ea47eSEdward Tomasz Napierala struct iscsi_daemon_connect *idc) 1647009ea47eSEdward Tomasz Napierala { 1648009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1649009ea47eSEdward Tomasz Napierala struct sockaddr *from_sa, *to_sa; 1650009ea47eSEdward Tomasz Napierala int error; 1651009ea47eSEdward Tomasz Napierala 1652009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1653009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1654009ea47eSEdward Tomasz Napierala if (is->is_id == idc->idc_session_id) 1655009ea47eSEdward Tomasz Napierala break; 1656009ea47eSEdward Tomasz Napierala } 1657009ea47eSEdward Tomasz Napierala if (is == NULL) { 1658009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1659009ea47eSEdward Tomasz Napierala return (ESRCH); 1660009ea47eSEdward Tomasz Napierala } 1661009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1662009ea47eSEdward Tomasz Napierala 1663009ea47eSEdward Tomasz Napierala if (idc->idc_from_addrlen > 0) { 1664009ea47eSEdward Tomasz Napierala error = getsockaddr(&from_sa, (void *)idc->idc_from_addr, idc->idc_from_addrlen); 166557a4f20bSEdward Tomasz Napierala if (error != 0) { 166657a4f20bSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, 166757a4f20bSEdward Tomasz Napierala "getsockaddr failed with error %d", error); 1668009ea47eSEdward Tomasz Napierala return (error); 166957a4f20bSEdward Tomasz Napierala } 1670009ea47eSEdward Tomasz Napierala } else { 1671009ea47eSEdward Tomasz Napierala from_sa = NULL; 1672009ea47eSEdward Tomasz Napierala } 1673009ea47eSEdward Tomasz Napierala error = getsockaddr(&to_sa, (void *)idc->idc_to_addr, idc->idc_to_addrlen); 1674009ea47eSEdward Tomasz Napierala if (error != 0) { 167557a4f20bSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "getsockaddr failed with error %d", 167657a4f20bSEdward Tomasz Napierala error); 1677009ea47eSEdward Tomasz Napierala free(from_sa, M_SONAME); 1678009ea47eSEdward Tomasz Napierala return (error); 1679009ea47eSEdward Tomasz Napierala } 1680009ea47eSEdward Tomasz Napierala 1681009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1682a3fd63f2SEdward Tomasz Napierala is->is_statsn = 0; 1683a3fd63f2SEdward Tomasz Napierala is->is_cmdsn = 0; 1684a3fd63f2SEdward Tomasz Napierala is->is_expcmdsn = 0; 1685a3fd63f2SEdward Tomasz Napierala is->is_maxcmdsn = 0; 1686009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = false; 1687009ea47eSEdward Tomasz Napierala is->is_login_phase = true; 1688009ea47eSEdward Tomasz Napierala is->is_timeout = 0; 1689009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1690009ea47eSEdward Tomasz Napierala 1691f41492b0SEdward Tomasz Napierala error = icl_conn_connect(is->is_conn, idc->idc_domain, 1692009ea47eSEdward Tomasz Napierala idc->idc_socktype, idc->idc_protocol, from_sa, to_sa); 1693009ea47eSEdward Tomasz Napierala free(from_sa, M_SONAME); 1694009ea47eSEdward Tomasz Napierala free(to_sa, M_SONAME); 1695009ea47eSEdward Tomasz Napierala 1696009ea47eSEdward Tomasz Napierala /* 1697009ea47eSEdward Tomasz Napierala * Digests are always disabled during login phase. 1698009ea47eSEdward Tomasz Napierala */ 1699009ea47eSEdward Tomasz Napierala is->is_conn->ic_header_crc32c = false; 1700009ea47eSEdward Tomasz Napierala is->is_conn->ic_data_crc32c = false; 1701009ea47eSEdward Tomasz Napierala 1702009ea47eSEdward Tomasz Napierala return (error); 1703009ea47eSEdward Tomasz Napierala } 1704009ea47eSEdward Tomasz Napierala 1705009ea47eSEdward Tomasz Napierala static int 1706009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_send(struct iscsi_softc *sc, 1707009ea47eSEdward Tomasz Napierala struct iscsi_daemon_send *ids) 1708009ea47eSEdward Tomasz Napierala { 1709009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1710009ea47eSEdward Tomasz Napierala struct icl_pdu *ip; 1711009ea47eSEdward Tomasz Napierala size_t datalen; 1712009ea47eSEdward Tomasz Napierala void *data; 1713009ea47eSEdward Tomasz Napierala int error; 1714009ea47eSEdward Tomasz Napierala 1715009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1716009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1717009ea47eSEdward Tomasz Napierala if (is->is_id == ids->ids_session_id) 1718009ea47eSEdward Tomasz Napierala break; 1719009ea47eSEdward Tomasz Napierala } 1720009ea47eSEdward Tomasz Napierala if (is == NULL) { 1721009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1722009ea47eSEdward Tomasz Napierala return (ESRCH); 1723009ea47eSEdward Tomasz Napierala } 1724009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1725009ea47eSEdward Tomasz Napierala 1726009ea47eSEdward Tomasz Napierala if (is->is_login_phase == false) 1727009ea47eSEdward Tomasz Napierala return (EBUSY); 1728009ea47eSEdward Tomasz Napierala 1729009ea47eSEdward Tomasz Napierala if (is->is_terminating || is->is_reconnecting) 1730009ea47eSEdward Tomasz Napierala return (EIO); 1731009ea47eSEdward Tomasz Napierala 1732009ea47eSEdward Tomasz Napierala datalen = ids->ids_data_segment_len; 17330cc7d64aSJohn Baldwin if (datalen > is->is_conn->ic_max_send_data_segment_length) 1734009ea47eSEdward Tomasz Napierala return (EINVAL); 1735009ea47eSEdward Tomasz Napierala if (datalen > 0) { 1736009ea47eSEdward Tomasz Napierala data = malloc(datalen, M_ISCSI, M_WAITOK); 1737009ea47eSEdward Tomasz Napierala error = copyin(ids->ids_data_segment, data, datalen); 1738009ea47eSEdward Tomasz Napierala if (error != 0) { 1739009ea47eSEdward Tomasz Napierala free(data, M_ISCSI); 1740009ea47eSEdward Tomasz Napierala return (error); 1741009ea47eSEdward Tomasz Napierala } 1742009ea47eSEdward Tomasz Napierala } 1743009ea47eSEdward Tomasz Napierala 1744d2d52b00SEdward Tomasz Napierala ip = icl_pdu_new(is->is_conn, M_WAITOK); 1745009ea47eSEdward Tomasz Napierala memcpy(ip->ip_bhs, ids->ids_bhs, sizeof(*ip->ip_bhs)); 1746009ea47eSEdward Tomasz Napierala if (datalen > 0) { 1747009ea47eSEdward Tomasz Napierala error = icl_pdu_append_data(ip, data, datalen, M_WAITOK); 1748009ea47eSEdward Tomasz Napierala KASSERT(error == 0, ("icl_pdu_append_data(..., M_WAITOK) failed")); 1749009ea47eSEdward Tomasz Napierala free(data, M_ISCSI); 1750009ea47eSEdward Tomasz Napierala } 1751d66a906bSEdward Tomasz Napierala iscsi_pdu_queue(ip); 1752009ea47eSEdward Tomasz Napierala 1753009ea47eSEdward Tomasz Napierala return (0); 1754009ea47eSEdward Tomasz Napierala } 1755009ea47eSEdward Tomasz Napierala 1756009ea47eSEdward Tomasz Napierala static int 1757009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_receive(struct iscsi_softc *sc, 1758009ea47eSEdward Tomasz Napierala struct iscsi_daemon_receive *idr) 1759009ea47eSEdward Tomasz Napierala { 1760009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1761009ea47eSEdward Tomasz Napierala struct icl_pdu *ip; 1762009ea47eSEdward Tomasz Napierala void *data; 17632f0586b2SEdward Tomasz Napierala int error; 1764009ea47eSEdward Tomasz Napierala 1765009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1766009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1767009ea47eSEdward Tomasz Napierala if (is->is_id == idr->idr_session_id) 1768009ea47eSEdward Tomasz Napierala break; 1769009ea47eSEdward Tomasz Napierala } 1770009ea47eSEdward Tomasz Napierala if (is == NULL) { 1771009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1772009ea47eSEdward Tomasz Napierala return (ESRCH); 1773009ea47eSEdward Tomasz Napierala } 1774009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1775009ea47eSEdward Tomasz Napierala 1776009ea47eSEdward Tomasz Napierala if (is->is_login_phase == false) 1777009ea47eSEdward Tomasz Napierala return (EBUSY); 1778009ea47eSEdward Tomasz Napierala 1779009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1780009ea47eSEdward Tomasz Napierala while (is->is_login_pdu == NULL && 1781009ea47eSEdward Tomasz Napierala is->is_terminating == false && 17822f0586b2SEdward Tomasz Napierala is->is_reconnecting == false) { 17832f0586b2SEdward Tomasz Napierala error = cv_wait_sig(&is->is_login_cv, &is->is_lock); 17842f0586b2SEdward Tomasz Napierala if (error != 0) { 17852f0586b2SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 17862f0586b2SEdward Tomasz Napierala return (error); 17872f0586b2SEdward Tomasz Napierala } 17882f0586b2SEdward Tomasz Napierala } 1789009ea47eSEdward Tomasz Napierala if (is->is_terminating || is->is_reconnecting) { 1790009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1791009ea47eSEdward Tomasz Napierala return (EIO); 1792009ea47eSEdward Tomasz Napierala } 1793009ea47eSEdward Tomasz Napierala ip = is->is_login_pdu; 1794009ea47eSEdward Tomasz Napierala is->is_login_pdu = NULL; 1795009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1796009ea47eSEdward Tomasz Napierala 1797009ea47eSEdward Tomasz Napierala if (ip->ip_data_len > idr->idr_data_segment_len) { 1798009ea47eSEdward Tomasz Napierala icl_pdu_free(ip); 1799009ea47eSEdward Tomasz Napierala return (EMSGSIZE); 1800009ea47eSEdward Tomasz Napierala } 1801009ea47eSEdward Tomasz Napierala 1802009ea47eSEdward Tomasz Napierala copyout(ip->ip_bhs, idr->idr_bhs, sizeof(*ip->ip_bhs)); 1803009ea47eSEdward Tomasz Napierala if (ip->ip_data_len > 0) { 1804009ea47eSEdward Tomasz Napierala data = malloc(ip->ip_data_len, M_ISCSI, M_WAITOK); 1805009ea47eSEdward Tomasz Napierala icl_pdu_get_data(ip, 0, data, ip->ip_data_len); 1806009ea47eSEdward Tomasz Napierala copyout(data, idr->idr_data_segment, ip->ip_data_len); 1807009ea47eSEdward Tomasz Napierala free(data, M_ISCSI); 1808009ea47eSEdward Tomasz Napierala } 1809009ea47eSEdward Tomasz Napierala 1810009ea47eSEdward Tomasz Napierala icl_pdu_free(ip); 1811009ea47eSEdward Tomasz Napierala 1812009ea47eSEdward Tomasz Napierala return (0); 1813009ea47eSEdward Tomasz Napierala } 1814009ea47eSEdward Tomasz Napierala #endif /* ICL_KERNEL_PROXY */ 1815009ea47eSEdward Tomasz Napierala 1816009ea47eSEdward Tomasz Napierala static void 1817009ea47eSEdward Tomasz Napierala iscsi_sanitize_session_conf(struct iscsi_session_conf *isc) 1818009ea47eSEdward Tomasz Napierala { 1819009ea47eSEdward Tomasz Napierala /* 1820009ea47eSEdward Tomasz Napierala * Just make sure all the fields are null-terminated. 1821009ea47eSEdward Tomasz Napierala * 1822009ea47eSEdward Tomasz Napierala * XXX: This is not particularly secure. We should 1823009ea47eSEdward Tomasz Napierala * create our own conf and then copy in relevant 1824009ea47eSEdward Tomasz Napierala * fields. 1825009ea47eSEdward Tomasz Napierala */ 1826009ea47eSEdward Tomasz Napierala isc->isc_initiator[ISCSI_NAME_LEN - 1] = '\0'; 1827009ea47eSEdward Tomasz Napierala isc->isc_initiator_addr[ISCSI_ADDR_LEN - 1] = '\0'; 1828009ea47eSEdward Tomasz Napierala isc->isc_initiator_alias[ISCSI_ALIAS_LEN - 1] = '\0'; 1829009ea47eSEdward Tomasz Napierala isc->isc_target[ISCSI_NAME_LEN - 1] = '\0'; 1830009ea47eSEdward Tomasz Napierala isc->isc_target_addr[ISCSI_ADDR_LEN - 1] = '\0'; 1831009ea47eSEdward Tomasz Napierala isc->isc_user[ISCSI_NAME_LEN - 1] = '\0'; 1832009ea47eSEdward Tomasz Napierala isc->isc_secret[ISCSI_SECRET_LEN - 1] = '\0'; 1833009ea47eSEdward Tomasz Napierala isc->isc_mutual_user[ISCSI_NAME_LEN - 1] = '\0'; 1834009ea47eSEdward Tomasz Napierala isc->isc_mutual_secret[ISCSI_SECRET_LEN - 1] = '\0'; 1835009ea47eSEdward Tomasz Napierala } 1836009ea47eSEdward Tomasz Napierala 183751be90b5SEdward Tomasz Napierala static bool 183851be90b5SEdward Tomasz Napierala iscsi_valid_session_conf(const struct iscsi_session_conf *isc) 183951be90b5SEdward Tomasz Napierala { 184051be90b5SEdward Tomasz Napierala 184151be90b5SEdward Tomasz Napierala if (isc->isc_initiator[0] == '\0') { 184251be90b5SEdward Tomasz Napierala ISCSI_DEBUG("empty isc_initiator"); 184351be90b5SEdward Tomasz Napierala return (false); 184451be90b5SEdward Tomasz Napierala } 184551be90b5SEdward Tomasz Napierala 184651be90b5SEdward Tomasz Napierala if (isc->isc_target_addr[0] == '\0') { 184751be90b5SEdward Tomasz Napierala ISCSI_DEBUG("empty isc_target_addr"); 184851be90b5SEdward Tomasz Napierala return (false); 184951be90b5SEdward Tomasz Napierala } 185051be90b5SEdward Tomasz Napierala 185151be90b5SEdward Tomasz Napierala if (isc->isc_discovery != 0 && isc->isc_target[0] != 0) { 185251be90b5SEdward Tomasz Napierala ISCSI_DEBUG("non-empty isc_target for discovery session"); 185351be90b5SEdward Tomasz Napierala return (false); 185451be90b5SEdward Tomasz Napierala } 185551be90b5SEdward Tomasz Napierala 185651be90b5SEdward Tomasz Napierala if (isc->isc_discovery == 0 && isc->isc_target[0] == 0) { 185751be90b5SEdward Tomasz Napierala ISCSI_DEBUG("empty isc_target for non-discovery session"); 185851be90b5SEdward Tomasz Napierala return (false); 185951be90b5SEdward Tomasz Napierala } 186051be90b5SEdward Tomasz Napierala 186151be90b5SEdward Tomasz Napierala return (true); 186251be90b5SEdward Tomasz Napierala } 186351be90b5SEdward Tomasz Napierala 1864009ea47eSEdward Tomasz Napierala static int 1865009ea47eSEdward Tomasz Napierala iscsi_ioctl_session_add(struct iscsi_softc *sc, struct iscsi_session_add *isa) 1866009ea47eSEdward Tomasz Napierala { 1867009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1868009ea47eSEdward Tomasz Napierala const struct iscsi_session *is2; 1869009ea47eSEdward Tomasz Napierala int error; 1870972a7d95SRichard Scheffenegger sbintime_t sbt, pr; 1871009ea47eSEdward Tomasz Napierala 1872009ea47eSEdward Tomasz Napierala iscsi_sanitize_session_conf(&isa->isa_conf); 187351be90b5SEdward Tomasz Napierala if (iscsi_valid_session_conf(&isa->isa_conf) == false) 187451be90b5SEdward Tomasz Napierala return (EINVAL); 1875009ea47eSEdward Tomasz Napierala 1876009ea47eSEdward Tomasz Napierala is = malloc(sizeof(*is), M_ISCSI, M_ZERO | M_WAITOK); 1877009ea47eSEdward Tomasz Napierala memcpy(&is->is_conf, &isa->isa_conf, sizeof(is->is_conf)); 1878009ea47eSEdward Tomasz Napierala 1879009ea47eSEdward Tomasz Napierala sx_xlock(&sc->sc_lock); 1880009ea47eSEdward Tomasz Napierala 1881009ea47eSEdward Tomasz Napierala /* 1882009ea47eSEdward Tomasz Napierala * Prevent duplicates. 1883009ea47eSEdward Tomasz Napierala */ 1884009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is2, &sc->sc_sessions, is_next) { 18857843bd03SEdward Tomasz Napierala if (!!is->is_conf.isc_discovery != 18867843bd03SEdward Tomasz Napierala !!is2->is_conf.isc_discovery) 18877843bd03SEdward Tomasz Napierala continue; 18887843bd03SEdward Tomasz Napierala 18897843bd03SEdward Tomasz Napierala if (strcmp(is->is_conf.isc_target_addr, 18907843bd03SEdward Tomasz Napierala is2->is_conf.isc_target_addr) != 0) 18917843bd03SEdward Tomasz Napierala continue; 18927843bd03SEdward Tomasz Napierala 18937843bd03SEdward Tomasz Napierala if (is->is_conf.isc_discovery == 0 && 18947843bd03SEdward Tomasz Napierala strcmp(is->is_conf.isc_target, 18957843bd03SEdward Tomasz Napierala is2->is_conf.isc_target) != 0) 18967843bd03SEdward Tomasz Napierala continue; 18977843bd03SEdward Tomasz Napierala 1898009ea47eSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 18997843bd03SEdward Tomasz Napierala free(is, M_ISCSI); 1900009ea47eSEdward Tomasz Napierala return (EBUSY); 1901009ea47eSEdward Tomasz Napierala } 1902009ea47eSEdward Tomasz Napierala 190382babffbSEdward Tomasz Napierala is->is_conn = icl_new_conn(is->is_conf.isc_offload, 1904b8911594SEdward Tomasz Napierala is->is_conf.isc_iser, "iscsi", &is->is_lock); 190582babffbSEdward Tomasz Napierala if (is->is_conn == NULL) { 190682babffbSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 190782babffbSEdward Tomasz Napierala free(is, M_ISCSI); 190882babffbSEdward Tomasz Napierala return (EINVAL); 190982babffbSEdward Tomasz Napierala } 1910009ea47eSEdward Tomasz Napierala is->is_conn->ic_receive = iscsi_receive_callback; 1911009ea47eSEdward Tomasz Napierala is->is_conn->ic_error = iscsi_error_callback; 1912009ea47eSEdward Tomasz Napierala is->is_conn->ic_prv0 = is; 1913009ea47eSEdward Tomasz Napierala TAILQ_INIT(&is->is_outstanding); 191416c158a5SEdward Tomasz Napierala STAILQ_INIT(&is->is_postponed); 1915009ea47eSEdward Tomasz Napierala mtx_init(&is->is_lock, "iscsi_lock", NULL, MTX_DEF); 1916009ea47eSEdward Tomasz Napierala cv_init(&is->is_maintenance_cv, "iscsi_mt"); 1917009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 1918009ea47eSEdward Tomasz Napierala cv_init(&is->is_login_cv, "iscsi_login"); 1919009ea47eSEdward Tomasz Napierala #endif 1920009ea47eSEdward Tomasz Napierala 19210cc7d64aSJohn Baldwin /* 19220cc7d64aSJohn Baldwin * Set some default values, from RFC 3720, section 12. 19230cc7d64aSJohn Baldwin * 19240cc7d64aSJohn Baldwin * These values are updated by the handoff IOCTL, but are 19250cc7d64aSJohn Baldwin * needed prior to the handoff to support sending the ISER 19260cc7d64aSJohn Baldwin * login PDU. 19270cc7d64aSJohn Baldwin */ 19280cc7d64aSJohn Baldwin is->is_conn->ic_max_recv_data_segment_length = 8192; 19290cc7d64aSJohn Baldwin is->is_conn->ic_max_send_data_segment_length = 8192; 19300cc7d64aSJohn Baldwin is->is_max_burst_length = 262144; 19310cc7d64aSJohn Baldwin is->is_first_burst_length = 65536; 19320cc7d64aSJohn Baldwin 1933009ea47eSEdward Tomasz Napierala is->is_softc = sc; 1934009ea47eSEdward Tomasz Napierala sc->sc_last_session_id++; 1935009ea47eSEdward Tomasz Napierala is->is_id = sc->sc_last_session_id; 1936ffe82e05SAlexander Motin is->is_isid[0] = 0x80; /* RFC 3720, 10.12.5: 10b, "Random" ISID. */ 1937ffe82e05SAlexander Motin arc4rand(&is->is_isid[1], 5, 0); 1938ffe82e05SAlexander Motin is->is_tsih = 0; 1939009ea47eSEdward Tomasz Napierala callout_init(&is->is_callout, 1); 1940009ea47eSEdward Tomasz Napierala 1941009ea47eSEdward Tomasz Napierala error = kthread_add(iscsi_maintenance_thread, is, NULL, NULL, 0, 0, "iscsimt"); 1942009ea47eSEdward Tomasz Napierala if (error != 0) { 1943009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "kthread_add(9) failed with error %d", error); 194409f2b94bSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 1945009ea47eSEdward Tomasz Napierala return (error); 1946009ea47eSEdward Tomasz Napierala } 1947bd6bb493SRichard Scheffenegger is->is_ping_timeout = is->is_conf.isc_ping_timeout; 1948bd6bb493SRichard Scheffenegger if (is->is_ping_timeout < 0) 1949bd6bb493SRichard Scheffenegger is->is_ping_timeout = ping_timeout; 1950bd6bb493SRichard Scheffenegger is->is_login_timeout = is->is_conf.isc_login_timeout; 1951bd6bb493SRichard Scheffenegger if (is->is_login_timeout < 0) 1952bd6bb493SRichard Scheffenegger is->is_login_timeout = login_timeout; 1953009ea47eSEdward Tomasz Napierala 1954972a7d95SRichard Scheffenegger sbt = mstosbt(995); 1955972a7d95SRichard Scheffenegger pr = mstosbt(10); 1956972a7d95SRichard Scheffenegger callout_reset_sbt(&is->is_callout, sbt, pr, iscsi_callout, is, 0); 195709f2b94bSEdward Tomasz Napierala TAILQ_INSERT_TAIL(&sc->sc_sessions, is, is_next); 195809f2b94bSEdward Tomasz Napierala 19592be596adSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1960ba165a31SEdward Tomasz Napierala /* 1961ba165a31SEdward Tomasz Napierala * Don't notify iscsid(8) if the session is disabled and it's not 1962ba165a31SEdward Tomasz Napierala * a discovery session, 1963ba165a31SEdward Tomasz Napierala */ 1964ba165a31SEdward Tomasz Napierala if (is->is_conf.isc_enable == 0 && is->is_conf.isc_discovery == 0) { 1965ba165a31SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1966ba165a31SEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 1967ba165a31SEdward Tomasz Napierala return (0); 1968ba165a31SEdward Tomasz Napierala } 1969ba165a31SEdward Tomasz Napierala 1970009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = true; 1971009ea47eSEdward Tomasz Napierala strlcpy(is->is_reason, "Waiting for iscsid(8)", sizeof(is->is_reason)); 19722be596adSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1973009ea47eSEdward Tomasz Napierala cv_signal(&sc->sc_cv); 1974009ea47eSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 1975009ea47eSEdward Tomasz Napierala return (0); 1976009ea47eSEdward Tomasz Napierala } 1977009ea47eSEdward Tomasz Napierala 1978009ea47eSEdward Tomasz Napierala static bool 1979009ea47eSEdward Tomasz Napierala iscsi_session_conf_matches(unsigned int id1, const struct iscsi_session_conf *c1, 1980009ea47eSEdward Tomasz Napierala unsigned int id2, const struct iscsi_session_conf *c2) 1981009ea47eSEdward Tomasz Napierala { 19826cc1e267SEdward Tomasz Napierala 19836cc1e267SEdward Tomasz Napierala if (id2 != 0 && id2 != id1) 1984009ea47eSEdward Tomasz Napierala return (false); 19856cc1e267SEdward Tomasz Napierala if (c2->isc_target[0] != '\0' && 19866cc1e267SEdward Tomasz Napierala strcmp(c1->isc_target, c2->isc_target) != 0) 19876cc1e267SEdward Tomasz Napierala return (false); 19886cc1e267SEdward Tomasz Napierala if (c2->isc_target_addr[0] != '\0' && 19896cc1e267SEdward Tomasz Napierala strcmp(c1->isc_target_addr, c2->isc_target_addr) != 0) 19906cc1e267SEdward Tomasz Napierala return (false); 19916cc1e267SEdward Tomasz Napierala return (true); 1992009ea47eSEdward Tomasz Napierala } 1993009ea47eSEdward Tomasz Napierala 1994009ea47eSEdward Tomasz Napierala static int 1995009ea47eSEdward Tomasz Napierala iscsi_ioctl_session_remove(struct iscsi_softc *sc, 1996009ea47eSEdward Tomasz Napierala struct iscsi_session_remove *isr) 1997009ea47eSEdward Tomasz Napierala { 1998009ea47eSEdward Tomasz Napierala struct iscsi_session *is, *tmp; 1999009ea47eSEdward Tomasz Napierala bool found = false; 2000009ea47eSEdward Tomasz Napierala 2001009ea47eSEdward Tomasz Napierala iscsi_sanitize_session_conf(&isr->isr_conf); 2002009ea47eSEdward Tomasz Napierala 2003009ea47eSEdward Tomasz Napierala sx_xlock(&sc->sc_lock); 2004009ea47eSEdward Tomasz Napierala TAILQ_FOREACH_SAFE(is, &sc->sc_sessions, is_next, tmp) { 2005009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 2006009ea47eSEdward Tomasz Napierala if (iscsi_session_conf_matches(is->is_id, &is->is_conf, 2007009ea47eSEdward Tomasz Napierala isr->isr_session_id, &isr->isr_conf)) { 2008009ea47eSEdward Tomasz Napierala found = true; 2009009ea47eSEdward Tomasz Napierala iscsi_session_logout(is); 2010009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 2011009ea47eSEdward Tomasz Napierala } 2012009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 2013009ea47eSEdward Tomasz Napierala } 2014009ea47eSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 2015009ea47eSEdward Tomasz Napierala 2016009ea47eSEdward Tomasz Napierala if (!found) 2017009ea47eSEdward Tomasz Napierala return (ESRCH); 2018009ea47eSEdward Tomasz Napierala 2019009ea47eSEdward Tomasz Napierala return (0); 2020009ea47eSEdward Tomasz Napierala } 2021009ea47eSEdward Tomasz Napierala 2022009ea47eSEdward Tomasz Napierala static int 2023009ea47eSEdward Tomasz Napierala iscsi_ioctl_session_list(struct iscsi_softc *sc, struct iscsi_session_list *isl) 2024009ea47eSEdward Tomasz Napierala { 2025009ea47eSEdward Tomasz Napierala int error; 2026009ea47eSEdward Tomasz Napierala unsigned int i = 0; 2027009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 2028009ea47eSEdward Tomasz Napierala struct iscsi_session_state iss; 2029009ea47eSEdward Tomasz Napierala 2030009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 2031009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 2032009ea47eSEdward Tomasz Napierala if (i >= isl->isl_nentries) { 2033009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 2034009ea47eSEdward Tomasz Napierala return (EMSGSIZE); 2035009ea47eSEdward Tomasz Napierala } 2036009ea47eSEdward Tomasz Napierala memset(&iss, 0, sizeof(iss)); 2037009ea47eSEdward Tomasz Napierala memcpy(&iss.iss_conf, &is->is_conf, sizeof(iss.iss_conf)); 2038009ea47eSEdward Tomasz Napierala iss.iss_id = is->is_id; 2039009ea47eSEdward Tomasz Napierala strlcpy(iss.iss_target_alias, is->is_target_alias, sizeof(iss.iss_target_alias)); 2040009ea47eSEdward Tomasz Napierala strlcpy(iss.iss_reason, is->is_reason, sizeof(iss.iss_reason)); 204182babffbSEdward Tomasz Napierala strlcpy(iss.iss_offload, is->is_conn->ic_offload, sizeof(iss.iss_offload)); 2042009ea47eSEdward Tomasz Napierala 2043009ea47eSEdward Tomasz Napierala if (is->is_conn->ic_header_crc32c) 2044009ea47eSEdward Tomasz Napierala iss.iss_header_digest = ISCSI_DIGEST_CRC32C; 2045009ea47eSEdward Tomasz Napierala else 2046009ea47eSEdward Tomasz Napierala iss.iss_header_digest = ISCSI_DIGEST_NONE; 2047009ea47eSEdward Tomasz Napierala 2048009ea47eSEdward Tomasz Napierala if (is->is_conn->ic_data_crc32c) 2049009ea47eSEdward Tomasz Napierala iss.iss_data_digest = ISCSI_DIGEST_CRC32C; 2050009ea47eSEdward Tomasz Napierala else 2051009ea47eSEdward Tomasz Napierala iss.iss_data_digest = ISCSI_DIGEST_NONE; 2052009ea47eSEdward Tomasz Napierala 205397b84d34SNavdeep Parhar iss.iss_max_send_data_segment_length = 20540cc7d64aSJohn Baldwin is->is_conn->ic_max_send_data_segment_length; 205597b84d34SNavdeep Parhar iss.iss_max_recv_data_segment_length = 20560cc7d64aSJohn Baldwin is->is_conn->ic_max_recv_data_segment_length; 20574e5408f1SEdward Tomasz Napierala iss.iss_max_burst_length = is->is_max_burst_length; 20584e5408f1SEdward Tomasz Napierala iss.iss_first_burst_length = is->is_first_burst_length; 2059009ea47eSEdward Tomasz Napierala iss.iss_immediate_data = is->is_immediate_data; 2060009ea47eSEdward Tomasz Napierala iss.iss_connected = is->is_connected; 2061009ea47eSEdward Tomasz Napierala 2062009ea47eSEdward Tomasz Napierala error = copyout(&iss, isl->isl_pstates + i, sizeof(iss)); 2063009ea47eSEdward Tomasz Napierala if (error != 0) { 2064009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 2065009ea47eSEdward Tomasz Napierala return (error); 2066009ea47eSEdward Tomasz Napierala } 2067009ea47eSEdward Tomasz Napierala i++; 2068009ea47eSEdward Tomasz Napierala } 2069009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 2070009ea47eSEdward Tomasz Napierala 2071009ea47eSEdward Tomasz Napierala isl->isl_nentries = i; 2072009ea47eSEdward Tomasz Napierala 2073009ea47eSEdward Tomasz Napierala return (0); 2074009ea47eSEdward Tomasz Napierala } 2075009ea47eSEdward Tomasz Napierala 2076009ea47eSEdward Tomasz Napierala static int 207751be90b5SEdward Tomasz Napierala iscsi_ioctl_session_modify(struct iscsi_softc *sc, 207851be90b5SEdward Tomasz Napierala struct iscsi_session_modify *ism) 207951be90b5SEdward Tomasz Napierala { 208051be90b5SEdward Tomasz Napierala struct iscsi_session *is; 20818ff2372aSEdward Tomasz Napierala const struct iscsi_session *is2; 208251be90b5SEdward Tomasz Napierala 208351be90b5SEdward Tomasz Napierala iscsi_sanitize_session_conf(&ism->ism_conf); 208451be90b5SEdward Tomasz Napierala if (iscsi_valid_session_conf(&ism->ism_conf) == false) 208551be90b5SEdward Tomasz Napierala return (EINVAL); 208651be90b5SEdward Tomasz Napierala 208751be90b5SEdward Tomasz Napierala sx_xlock(&sc->sc_lock); 208851be90b5SEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 208951be90b5SEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 20908ff2372aSEdward Tomasz Napierala if (is->is_id == ism->ism_session_id) { 20918ff2372aSEdward Tomasz Napierala /* Note that the session remains locked. */ 209251be90b5SEdward Tomasz Napierala break; 20938ff2372aSEdward Tomasz Napierala } 209451be90b5SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 209551be90b5SEdward Tomasz Napierala } 209651be90b5SEdward Tomasz Napierala if (is == NULL) { 209751be90b5SEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 209851be90b5SEdward Tomasz Napierala return (ESRCH); 209951be90b5SEdward Tomasz Napierala } 21008ff2372aSEdward Tomasz Napierala 21018ff2372aSEdward Tomasz Napierala /* 21028ff2372aSEdward Tomasz Napierala * Prevent duplicates. 21038ff2372aSEdward Tomasz Napierala */ 21048ff2372aSEdward Tomasz Napierala TAILQ_FOREACH(is2, &sc->sc_sessions, is_next) { 21058ff2372aSEdward Tomasz Napierala if (is == is2) 21068ff2372aSEdward Tomasz Napierala continue; 21078ff2372aSEdward Tomasz Napierala 21088ff2372aSEdward Tomasz Napierala if (!!ism->ism_conf.isc_discovery != 21098ff2372aSEdward Tomasz Napierala !!is2->is_conf.isc_discovery) 21108ff2372aSEdward Tomasz Napierala continue; 21118ff2372aSEdward Tomasz Napierala 21128ff2372aSEdward Tomasz Napierala if (strcmp(ism->ism_conf.isc_target_addr, 21138ff2372aSEdward Tomasz Napierala is2->is_conf.isc_target_addr) != 0) 21148ff2372aSEdward Tomasz Napierala continue; 21158ff2372aSEdward Tomasz Napierala 21168ff2372aSEdward Tomasz Napierala if (ism->ism_conf.isc_discovery == 0 && 21178ff2372aSEdward Tomasz Napierala strcmp(ism->ism_conf.isc_target, 21188ff2372aSEdward Tomasz Napierala is2->is_conf.isc_target) != 0) 21198ff2372aSEdward Tomasz Napierala continue; 21208ff2372aSEdward Tomasz Napierala 21218ff2372aSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 21228ff2372aSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 21238ff2372aSEdward Tomasz Napierala return (EBUSY); 21248ff2372aSEdward Tomasz Napierala } 21258ff2372aSEdward Tomasz Napierala 212651be90b5SEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 212751be90b5SEdward Tomasz Napierala 212851be90b5SEdward Tomasz Napierala memcpy(&is->is_conf, &ism->ism_conf, sizeof(is->is_conf)); 212951be90b5SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 213051be90b5SEdward Tomasz Napierala 213151be90b5SEdward Tomasz Napierala iscsi_session_reconnect(is); 213251be90b5SEdward Tomasz Napierala 213351be90b5SEdward Tomasz Napierala return (0); 213451be90b5SEdward Tomasz Napierala } 213551be90b5SEdward Tomasz Napierala 213651be90b5SEdward Tomasz Napierala static int 2137009ea47eSEdward Tomasz Napierala iscsi_ioctl(struct cdev *dev, u_long cmd, caddr_t arg, int mode, 2138009ea47eSEdward Tomasz Napierala struct thread *td) 2139009ea47eSEdward Tomasz Napierala { 2140009ea47eSEdward Tomasz Napierala struct iscsi_softc *sc; 2141009ea47eSEdward Tomasz Napierala 2142009ea47eSEdward Tomasz Napierala sc = dev->si_drv1; 2143009ea47eSEdward Tomasz Napierala 2144009ea47eSEdward Tomasz Napierala switch (cmd) { 2145009ea47eSEdward Tomasz Napierala case ISCSIDWAIT: 2146009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_wait(sc, 2147009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_request *)arg)); 2148009ea47eSEdward Tomasz Napierala case ISCSIDHANDOFF: 2149009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_handoff(sc, 2150009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_handoff *)arg)); 2151009ea47eSEdward Tomasz Napierala case ISCSIDFAIL: 2152009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_fail(sc, 2153009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_fail *)arg)); 2154009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 2155009ea47eSEdward Tomasz Napierala case ISCSIDCONNECT: 2156009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_connect(sc, 2157009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_connect *)arg)); 2158009ea47eSEdward Tomasz Napierala case ISCSIDSEND: 2159009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_send(sc, 2160009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_send *)arg)); 2161009ea47eSEdward Tomasz Napierala case ISCSIDRECEIVE: 2162009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_receive(sc, 2163009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_receive *)arg)); 2164009ea47eSEdward Tomasz Napierala #endif /* ICL_KERNEL_PROXY */ 2165009ea47eSEdward Tomasz Napierala case ISCSISADD: 2166009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_session_add(sc, 2167009ea47eSEdward Tomasz Napierala (struct iscsi_session_add *)arg)); 2168009ea47eSEdward Tomasz Napierala case ISCSISREMOVE: 2169009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_session_remove(sc, 2170009ea47eSEdward Tomasz Napierala (struct iscsi_session_remove *)arg)); 2171009ea47eSEdward Tomasz Napierala case ISCSISLIST: 2172009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_session_list(sc, 2173009ea47eSEdward Tomasz Napierala (struct iscsi_session_list *)arg)); 217451be90b5SEdward Tomasz Napierala case ISCSISMODIFY: 217551be90b5SEdward Tomasz Napierala return (iscsi_ioctl_session_modify(sc, 217651be90b5SEdward Tomasz Napierala (struct iscsi_session_modify *)arg)); 2177009ea47eSEdward Tomasz Napierala default: 2178009ea47eSEdward Tomasz Napierala return (EINVAL); 2179009ea47eSEdward Tomasz Napierala } 2180009ea47eSEdward Tomasz Napierala } 2181009ea47eSEdward Tomasz Napierala 2182009ea47eSEdward Tomasz Napierala static struct iscsi_outstanding * 2183009ea47eSEdward Tomasz Napierala iscsi_outstanding_find(struct iscsi_session *is, uint32_t initiator_task_tag) 2184009ea47eSEdward Tomasz Napierala { 2185009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io; 2186009ea47eSEdward Tomasz Napierala 2187009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 2188009ea47eSEdward Tomasz Napierala 2189009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(io, &is->is_outstanding, io_next) { 2190009ea47eSEdward Tomasz Napierala if (io->io_initiator_task_tag == initiator_task_tag) 2191009ea47eSEdward Tomasz Napierala return (io); 2192009ea47eSEdward Tomasz Napierala } 2193009ea47eSEdward Tomasz Napierala return (NULL); 2194009ea47eSEdward Tomasz Napierala } 2195009ea47eSEdward Tomasz Napierala 2196aa75114cSAlexander Motin static struct iscsi_outstanding * 2197aa75114cSAlexander Motin iscsi_outstanding_find_ccb(struct iscsi_session *is, union ccb *ccb) 2198aa75114cSAlexander Motin { 2199aa75114cSAlexander Motin struct iscsi_outstanding *io; 2200aa75114cSAlexander Motin 2201aa75114cSAlexander Motin ISCSI_SESSION_LOCK_ASSERT(is); 2202aa75114cSAlexander Motin 2203aa75114cSAlexander Motin TAILQ_FOREACH(io, &is->is_outstanding, io_next) { 2204aa75114cSAlexander Motin if (io->io_ccb == ccb) 2205aa75114cSAlexander Motin return (io); 2206aa75114cSAlexander Motin } 2207aa75114cSAlexander Motin return (NULL); 2208aa75114cSAlexander Motin } 2209aa75114cSAlexander Motin 2210aa75114cSAlexander Motin static struct iscsi_outstanding * 2211604c023fSEdward Tomasz Napierala iscsi_outstanding_add(struct iscsi_session *is, struct icl_pdu *request, 22127a03d007SEdward Tomasz Napierala union ccb *ccb, uint32_t *initiator_task_tagp) 2213009ea47eSEdward Tomasz Napierala { 2214009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io; 22157a03d007SEdward Tomasz Napierala int error; 2216009ea47eSEdward Tomasz Napierala 2217009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 2218009ea47eSEdward Tomasz Napierala 2219009ea47eSEdward Tomasz Napierala io = uma_zalloc(iscsi_outstanding_zone, M_NOWAIT | M_ZERO); 2220009ea47eSEdward Tomasz Napierala if (io == NULL) { 22217a03d007SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate %zd bytes", 22227a03d007SEdward Tomasz Napierala sizeof(*io)); 2223aa75114cSAlexander Motin return (NULL); 2224009ea47eSEdward Tomasz Napierala } 22257a03d007SEdward Tomasz Napierala 2226604c023fSEdward Tomasz Napierala error = icl_conn_task_setup(is->is_conn, request, &ccb->csio, 22277a03d007SEdward Tomasz Napierala initiator_task_tagp, &io->io_icl_prv); 22287a03d007SEdward Tomasz Napierala if (error != 0) { 22297a03d007SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, 22307a03d007SEdward Tomasz Napierala "icl_conn_task_setup() failed with error %d", error); 22317a03d007SEdward Tomasz Napierala uma_zfree(iscsi_outstanding_zone, io); 22327a03d007SEdward Tomasz Napierala return (NULL); 22337a03d007SEdward Tomasz Napierala } 22347a03d007SEdward Tomasz Napierala 22357a03d007SEdward Tomasz Napierala KASSERT(iscsi_outstanding_find(is, *initiator_task_tagp) == NULL, 22367a03d007SEdward Tomasz Napierala ("initiator_task_tag 0x%x already added", *initiator_task_tagp)); 22377a03d007SEdward Tomasz Napierala 22387a03d007SEdward Tomasz Napierala io->io_initiator_task_tag = *initiator_task_tagp; 2239009ea47eSEdward Tomasz Napierala io->io_ccb = ccb; 2240009ea47eSEdward Tomasz Napierala TAILQ_INSERT_TAIL(&is->is_outstanding, io, io_next); 2241aa75114cSAlexander Motin return (io); 2242009ea47eSEdward Tomasz Napierala } 2243009ea47eSEdward Tomasz Napierala 2244009ea47eSEdward Tomasz Napierala static void 2245009ea47eSEdward Tomasz Napierala iscsi_outstanding_remove(struct iscsi_session *is, struct iscsi_outstanding *io) 2246009ea47eSEdward Tomasz Napierala { 2247009ea47eSEdward Tomasz Napierala 2248009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 2249009ea47eSEdward Tomasz Napierala 22507a03d007SEdward Tomasz Napierala icl_conn_task_done(is->is_conn, io->io_icl_prv); 2251009ea47eSEdward Tomasz Napierala TAILQ_REMOVE(&is->is_outstanding, io, io_next); 2252009ea47eSEdward Tomasz Napierala uma_zfree(iscsi_outstanding_zone, io); 2253009ea47eSEdward Tomasz Napierala } 2254009ea47eSEdward Tomasz Napierala 2255009ea47eSEdward Tomasz Napierala static void 2256aa75114cSAlexander Motin iscsi_action_abort(struct iscsi_session *is, union ccb *ccb) 2257aa75114cSAlexander Motin { 2258aa75114cSAlexander Motin struct icl_pdu *request; 2259aa75114cSAlexander Motin struct iscsi_bhs_task_management_request *bhstmr; 2260aa75114cSAlexander Motin struct ccb_abort *cab = &ccb->cab; 2261aa75114cSAlexander Motin struct iscsi_outstanding *io, *aio; 22627a03d007SEdward Tomasz Napierala uint32_t initiator_task_tag; 2263aa75114cSAlexander Motin 2264aa75114cSAlexander Motin ISCSI_SESSION_LOCK_ASSERT(is); 2265aa75114cSAlexander Motin 2266aa75114cSAlexander Motin #if 0 2267aa75114cSAlexander Motin KASSERT(is->is_login_phase == false, ("%s called during Login Phase", __func__)); 2268aa75114cSAlexander Motin #else 2269aa75114cSAlexander Motin if (is->is_login_phase) { 2270aa75114cSAlexander Motin ccb->ccb_h.status = CAM_REQ_ABORTED; 2271aa75114cSAlexander Motin xpt_done(ccb); 2272aa75114cSAlexander Motin return; 2273aa75114cSAlexander Motin } 2274aa75114cSAlexander Motin #endif 2275aa75114cSAlexander Motin 2276aa75114cSAlexander Motin aio = iscsi_outstanding_find_ccb(is, cab->abort_ccb); 2277aa75114cSAlexander Motin if (aio == NULL) { 2278aa75114cSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP; 2279aa75114cSAlexander Motin xpt_done(ccb); 2280aa75114cSAlexander Motin return; 2281aa75114cSAlexander Motin } 2282aa75114cSAlexander Motin 2283d2d52b00SEdward Tomasz Napierala request = icl_pdu_new(is->is_conn, M_NOWAIT); 2284aa75114cSAlexander Motin if (request == NULL) { 2285aa75114cSAlexander Motin ccb->ccb_h.status = CAM_RESRC_UNAVAIL; 2286aa75114cSAlexander Motin xpt_done(ccb); 2287aa75114cSAlexander Motin return; 2288aa75114cSAlexander Motin } 2289aa75114cSAlexander Motin 22907a03d007SEdward Tomasz Napierala initiator_task_tag = is->is_initiator_task_tag++; 22919bee9a98SAlexander Motin if (initiator_task_tag == 0xffffffff) 22929bee9a98SAlexander Motin initiator_task_tag = is->is_initiator_task_tag++; 2293aa75114cSAlexander Motin 2294604c023fSEdward Tomasz Napierala io = iscsi_outstanding_add(is, request, NULL, &initiator_task_tag); 2295aa75114cSAlexander Motin if (io == NULL) { 2296aa75114cSAlexander Motin icl_pdu_free(request); 2297aa75114cSAlexander Motin ccb->ccb_h.status = CAM_RESRC_UNAVAIL; 2298aa75114cSAlexander Motin xpt_done(ccb); 2299aa75114cSAlexander Motin return; 2300aa75114cSAlexander Motin } 23013dd2a7a5SAlexander Motin io->io_referenced_task_tag = aio->io_initiator_task_tag; 23027a03d007SEdward Tomasz Napierala 23037a03d007SEdward Tomasz Napierala bhstmr = (struct iscsi_bhs_task_management_request *)request->ip_bhs; 23047a03d007SEdward Tomasz Napierala bhstmr->bhstmr_opcode = ISCSI_BHS_OPCODE_TASK_REQUEST; 23057a03d007SEdward Tomasz Napierala bhstmr->bhstmr_function = 0x80 | BHSTMR_FUNCTION_ABORT_TASK; 23067a03d007SEdward Tomasz Napierala bhstmr->bhstmr_lun = htobe64(CAM_EXTLUN_BYTE_SWIZZLE(ccb->ccb_h.target_lun)); 23077a03d007SEdward Tomasz Napierala bhstmr->bhstmr_initiator_task_tag = initiator_task_tag; 23087a03d007SEdward Tomasz Napierala bhstmr->bhstmr_referenced_task_tag = aio->io_initiator_task_tag; 23097a03d007SEdward Tomasz Napierala 2310aa75114cSAlexander Motin iscsi_pdu_queue_locked(request); 2311aa75114cSAlexander Motin } 2312aa75114cSAlexander Motin 2313aa75114cSAlexander Motin static void 2314009ea47eSEdward Tomasz Napierala iscsi_action_scsiio(struct iscsi_session *is, union ccb *ccb) 2315009ea47eSEdward Tomasz Napierala { 2316009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 2317009ea47eSEdward Tomasz Napierala struct iscsi_bhs_scsi_command *bhssc; 2318009ea47eSEdward Tomasz Napierala struct ccb_scsiio *csio; 2319aa75114cSAlexander Motin struct iscsi_outstanding *io; 2320009ea47eSEdward Tomasz Napierala size_t len; 23217a03d007SEdward Tomasz Napierala uint32_t initiator_task_tag; 2322009ea47eSEdward Tomasz Napierala int error; 2323009ea47eSEdward Tomasz Napierala 2324009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 2325009ea47eSEdward Tomasz Napierala 2326009ea47eSEdward Tomasz Napierala #if 0 2327009ea47eSEdward Tomasz Napierala KASSERT(is->is_login_phase == false, ("%s called during Login Phase", __func__)); 2328009ea47eSEdward Tomasz Napierala #else 2329009ea47eSEdward Tomasz Napierala if (is->is_login_phase) { 2330009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "called during login phase"); 2331009ea47eSEdward Tomasz Napierala if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 2332009ea47eSEdward Tomasz Napierala xpt_freeze_devq(ccb->ccb_h.path, 1); 2333009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 2334009ea47eSEdward Tomasz Napierala } 2335009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_REQ_ABORTED | CAM_DEV_QFRZN; 2336009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2337009ea47eSEdward Tomasz Napierala return; 2338009ea47eSEdward Tomasz Napierala } 2339009ea47eSEdward Tomasz Napierala #endif 2340009ea47eSEdward Tomasz Napierala 2341d2d52b00SEdward Tomasz Napierala request = icl_pdu_new(is->is_conn, M_NOWAIT); 2342009ea47eSEdward Tomasz Napierala if (request == NULL) { 2343009ea47eSEdward Tomasz Napierala if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 2344009ea47eSEdward Tomasz Napierala xpt_freeze_devq(ccb->ccb_h.path, 1); 2345009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 2346009ea47eSEdward Tomasz Napierala } 2347009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_RESRC_UNAVAIL | CAM_DEV_QFRZN; 2348009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2349009ea47eSEdward Tomasz Napierala return; 2350009ea47eSEdward Tomasz Napierala } 2351009ea47eSEdward Tomasz Napierala 23527a03d007SEdward Tomasz Napierala initiator_task_tag = is->is_initiator_task_tag++; 23539bee9a98SAlexander Motin if (initiator_task_tag == 0xffffffff) 23549bee9a98SAlexander Motin initiator_task_tag = is->is_initiator_task_tag++; 23559bee9a98SAlexander Motin 2356604c023fSEdward Tomasz Napierala io = iscsi_outstanding_add(is, request, ccb, &initiator_task_tag); 23577a03d007SEdward Tomasz Napierala if (io == NULL) { 23587a03d007SEdward Tomasz Napierala icl_pdu_free(request); 23597a03d007SEdward Tomasz Napierala if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 23607a03d007SEdward Tomasz Napierala xpt_freeze_devq(ccb->ccb_h.path, 1); 23617a03d007SEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 23627a03d007SEdward Tomasz Napierala } 23637a03d007SEdward Tomasz Napierala ccb->ccb_h.status = CAM_RESRC_UNAVAIL | CAM_DEV_QFRZN; 23647a03d007SEdward Tomasz Napierala xpt_done(ccb); 23657a03d007SEdward Tomasz Napierala return; 23667a03d007SEdward Tomasz Napierala } 23677a03d007SEdward Tomasz Napierala 2368009ea47eSEdward Tomasz Napierala csio = &ccb->csio; 2369009ea47eSEdward Tomasz Napierala bhssc = (struct iscsi_bhs_scsi_command *)request->ip_bhs; 2370009ea47eSEdward Tomasz Napierala bhssc->bhssc_opcode = ISCSI_BHS_OPCODE_SCSI_COMMAND; 2371009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_F; 2372009ea47eSEdward Tomasz Napierala switch (csio->ccb_h.flags & CAM_DIR_MASK) { 2373009ea47eSEdward Tomasz Napierala case CAM_DIR_IN: 2374009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_R; 2375009ea47eSEdward Tomasz Napierala break; 2376009ea47eSEdward Tomasz Napierala case CAM_DIR_OUT: 2377009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_W; 2378009ea47eSEdward Tomasz Napierala break; 2379009ea47eSEdward Tomasz Napierala } 2380009ea47eSEdward Tomasz Napierala 2381462cf3baSAlexander Motin if ((ccb->ccb_h.flags & CAM_TAG_ACTION_VALID) != 0) { 2382009ea47eSEdward Tomasz Napierala switch (csio->tag_action) { 2383009ea47eSEdward Tomasz Napierala case MSG_HEAD_OF_Q_TAG: 2384009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_HOQ; 2385009ea47eSEdward Tomasz Napierala break; 2386009ea47eSEdward Tomasz Napierala case MSG_ORDERED_Q_TAG: 2387009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_ORDERED; 2388009ea47eSEdward Tomasz Napierala break; 2389009ea47eSEdward Tomasz Napierala case MSG_ACA_TASK: 2390009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_ACA; 2391009ea47eSEdward Tomasz Napierala break; 2392009ea47eSEdward Tomasz Napierala case MSG_SIMPLE_Q_TAG: 2393009ea47eSEdward Tomasz Napierala default: 2394009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_SIMPLE; 2395009ea47eSEdward Tomasz Napierala break; 2396009ea47eSEdward Tomasz Napierala } 2397462cf3baSAlexander Motin } else 2398462cf3baSAlexander Motin bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_UNTAGGED; 2399009ea47eSEdward Tomasz Napierala 240088364968SAlexander Motin if (is->is_protocol_level >= 2) { 240188364968SAlexander Motin bhssc->bhssc_pri = (csio->priority << BHSSC_PRI_SHIFT) & 240288364968SAlexander Motin BHSSC_PRI_MASK; 240388364968SAlexander Motin } 240488364968SAlexander Motin 2405a9f2f291SEdward Tomasz Napierala bhssc->bhssc_lun = htobe64(CAM_EXTLUN_BYTE_SWIZZLE(ccb->ccb_h.target_lun)); 24067a03d007SEdward Tomasz Napierala bhssc->bhssc_initiator_task_tag = initiator_task_tag; 2407009ea47eSEdward Tomasz Napierala bhssc->bhssc_expected_data_transfer_length = htonl(csio->dxfer_len); 2408009ea47eSEdward Tomasz Napierala KASSERT(csio->cdb_len <= sizeof(bhssc->bhssc_cdb), 2409009ea47eSEdward Tomasz Napierala ("unsupported CDB size %zd", (size_t)csio->cdb_len)); 2410009ea47eSEdward Tomasz Napierala 2411009ea47eSEdward Tomasz Napierala if (csio->ccb_h.flags & CAM_CDB_POINTER) 2412009ea47eSEdward Tomasz Napierala memcpy(&bhssc->bhssc_cdb, csio->cdb_io.cdb_ptr, csio->cdb_len); 2413009ea47eSEdward Tomasz Napierala else 2414009ea47eSEdward Tomasz Napierala memcpy(&bhssc->bhssc_cdb, csio->cdb_io.cdb_bytes, csio->cdb_len); 2415009ea47eSEdward Tomasz Napierala 2416009ea47eSEdward Tomasz Napierala if (is->is_immediate_data && 2417009ea47eSEdward Tomasz Napierala (csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT) { 2418009ea47eSEdward Tomasz Napierala len = csio->dxfer_len; 2419009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "adding %zd of immediate data", len); 2420009ea47eSEdward Tomasz Napierala if (len > is->is_first_burst_length) { 242197b84d34SNavdeep Parhar ISCSI_SESSION_DEBUG(is, "len %zd -> %d", len, is->is_first_burst_length); 2422009ea47eSEdward Tomasz Napierala len = is->is_first_burst_length; 2423009ea47eSEdward Tomasz Napierala } 24240cc7d64aSJohn Baldwin if (len > is->is_conn->ic_max_send_data_segment_length) { 242597b84d34SNavdeep Parhar ISCSI_SESSION_DEBUG(is, "len %zd -> %d", len, 24260cc7d64aSJohn Baldwin is->is_conn->ic_max_send_data_segment_length); 24270cc7d64aSJohn Baldwin len = is->is_conn->ic_max_send_data_segment_length; 24283f9e1172SAlexander Motin } 2429009ea47eSEdward Tomasz Napierala 2430*9c7a4875SJohn Baldwin error = icl_pdu_append_data(request, csio->data_ptr, len, 2431*9c7a4875SJohn Baldwin M_NOWAIT | ICL_NOCOPY); 2432009ea47eSEdward Tomasz Napierala if (error != 0) { 2433938bcb04SEdward Tomasz Napierala iscsi_outstanding_remove(is, io); 2434009ea47eSEdward Tomasz Napierala icl_pdu_free(request); 2435009ea47eSEdward Tomasz Napierala if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 2436009ea47eSEdward Tomasz Napierala xpt_freeze_devq(ccb->ccb_h.path, 1); 2437009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 2438009ea47eSEdward Tomasz Napierala } 2439009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_RESRC_UNAVAIL | CAM_DEV_QFRZN; 2440009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2441009ea47eSEdward Tomasz Napierala return; 2442009ea47eSEdward Tomasz Napierala } 2443009ea47eSEdward Tomasz Napierala } 2444009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(request); 2445009ea47eSEdward Tomasz Napierala } 2446009ea47eSEdward Tomasz Napierala 2447009ea47eSEdward Tomasz Napierala static void 2448009ea47eSEdward Tomasz Napierala iscsi_action(struct cam_sim *sim, union ccb *ccb) 2449009ea47eSEdward Tomasz Napierala { 2450009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 2451009ea47eSEdward Tomasz Napierala 2452009ea47eSEdward Tomasz Napierala is = cam_sim_softc(sim); 2453009ea47eSEdward Tomasz Napierala 2454009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 2455009ea47eSEdward Tomasz Napierala 2456f1f12e40SEdward Tomasz Napierala if (is->is_terminating || 2457f1f12e40SEdward Tomasz Napierala (is->is_connected == false && fail_on_disconnection)) { 2458009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_DEV_NOT_THERE; 2459009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2460009ea47eSEdward Tomasz Napierala return; 2461009ea47eSEdward Tomasz Napierala } 2462009ea47eSEdward Tomasz Napierala 2463186bcdaaSEdward Tomasz Napierala /* 2464186bcdaaSEdward Tomasz Napierala * Make sure CAM doesn't sneak in a CCB just after freezing the queue. 2465186bcdaaSEdward Tomasz Napierala */ 2466186bcdaaSEdward Tomasz Napierala if (is->is_simq_frozen == true) { 2467186bcdaaSEdward Tomasz Napierala ccb->ccb_h.status &= ~(CAM_SIM_QUEUED | CAM_STATUS_MASK); 2468186bcdaaSEdward Tomasz Napierala ccb->ccb_h.status |= CAM_REQUEUE_REQ; 2469186bcdaaSEdward Tomasz Napierala /* Don't freeze the devq - the SIM queue is already frozen. */ 2470186bcdaaSEdward Tomasz Napierala xpt_done(ccb); 2471186bcdaaSEdward Tomasz Napierala return; 2472186bcdaaSEdward Tomasz Napierala } 2473186bcdaaSEdward Tomasz Napierala 2474009ea47eSEdward Tomasz Napierala switch (ccb->ccb_h.func_code) { 2475009ea47eSEdward Tomasz Napierala case XPT_PATH_INQ: 2476009ea47eSEdward Tomasz Napierala { 2477009ea47eSEdward Tomasz Napierala struct ccb_pathinq *cpi = &ccb->cpi; 2478009ea47eSEdward Tomasz Napierala 2479009ea47eSEdward Tomasz Napierala cpi->version_num = 1; 2480009ea47eSEdward Tomasz Napierala cpi->hba_inquiry = PI_TAG_ABLE; 2481009ea47eSEdward Tomasz Napierala cpi->target_sprt = 0; 2482a9f2f291SEdward Tomasz Napierala cpi->hba_misc = PIM_EXTLUNS; 24837deb68abSEdward Tomasz Napierala /* 24847deb68abSEdward Tomasz Napierala * XXX: It shouldn't ever be NULL; this could be turned 24857deb68abSEdward Tomasz Napierala * into a KASSERT eventually. 24867deb68abSEdward Tomasz Napierala */ 24877deb68abSEdward Tomasz Napierala if (is->is_conn == NULL) 24887deb68abSEdward Tomasz Napierala ISCSI_WARN("NULL conn"); 24897deb68abSEdward Tomasz Napierala else if (is->is_conn->ic_unmapped) 24907deb68abSEdward Tomasz Napierala cpi->hba_misc |= PIM_UNMAPPED; 2491009ea47eSEdward Tomasz Napierala cpi->hba_eng_cnt = 0; 2492009ea47eSEdward Tomasz Napierala cpi->max_target = 0; 249317cf3eb1SEdward Tomasz Napierala /* 249417cf3eb1SEdward Tomasz Napierala * Note that the variable below is only relevant for targets 249517cf3eb1SEdward Tomasz Napierala * that don't claim compliance with anything above SPC2, which 249617cf3eb1SEdward Tomasz Napierala * means they don't support REPORT_LUNS. 249717cf3eb1SEdward Tomasz Napierala */ 249817cf3eb1SEdward Tomasz Napierala cpi->max_lun = 255; 2499a9f2f291SEdward Tomasz Napierala cpi->initiator_id = ~0; 25007843bd03SEdward Tomasz Napierala strlcpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); 25017843bd03SEdward Tomasz Napierala strlcpy(cpi->hba_vid, "iSCSI", HBA_IDLEN); 25027843bd03SEdward Tomasz Napierala strlcpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); 2503009ea47eSEdward Tomasz Napierala cpi->unit_number = cam_sim_unit(sim); 2504009ea47eSEdward Tomasz Napierala cpi->bus_id = cam_sim_bus(sim); 2505009ea47eSEdward Tomasz Napierala cpi->base_transfer_speed = 150000; /* XXX */ 2506009ea47eSEdward Tomasz Napierala cpi->transport = XPORT_ISCSI; 2507009ea47eSEdward Tomasz Napierala cpi->transport_version = 0; 2508009ea47eSEdward Tomasz Napierala cpi->protocol = PROTO_SCSI; 2509009ea47eSEdward Tomasz Napierala cpi->protocol_version = SCSI_REV_SPC3; 2510cd853791SKonstantin Belousov cpi->maxio = maxphys; 2511009ea47eSEdward Tomasz Napierala cpi->ccb_h.status = CAM_REQ_CMP; 2512009ea47eSEdward Tomasz Napierala break; 2513009ea47eSEdward Tomasz Napierala } 2514462cf3baSAlexander Motin case XPT_GET_TRAN_SETTINGS: 2515462cf3baSAlexander Motin { 2516462cf3baSAlexander Motin struct ccb_trans_settings *cts; 2517462cf3baSAlexander Motin struct ccb_trans_settings_scsi *scsi; 2518462cf3baSAlexander Motin 2519462cf3baSAlexander Motin cts = &ccb->cts; 2520462cf3baSAlexander Motin scsi = &cts->proto_specific.scsi; 2521462cf3baSAlexander Motin 2522462cf3baSAlexander Motin cts->protocol = PROTO_SCSI; 2523462cf3baSAlexander Motin cts->protocol_version = SCSI_REV_SPC3; 2524462cf3baSAlexander Motin cts->transport = XPORT_ISCSI; 2525462cf3baSAlexander Motin cts->transport_version = 0; 2526462cf3baSAlexander Motin scsi->valid = CTS_SCSI_VALID_TQ; 2527462cf3baSAlexander Motin scsi->flags = CTS_SCSI_FLAGS_TAG_ENB; 2528462cf3baSAlexander Motin cts->ccb_h.status = CAM_REQ_CMP; 2529462cf3baSAlexander Motin break; 2530462cf3baSAlexander Motin } 2531009ea47eSEdward Tomasz Napierala case XPT_CALC_GEOMETRY: 2532009ea47eSEdward Tomasz Napierala cam_calc_geometry(&ccb->ccg, /*extended*/1); 2533009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_REQ_CMP; 2534009ea47eSEdward Tomasz Napierala break; 2535009ea47eSEdward Tomasz Napierala #if 0 2536009ea47eSEdward Tomasz Napierala /* 2537009ea47eSEdward Tomasz Napierala * XXX: What's the point? 2538009ea47eSEdward Tomasz Napierala */ 2539009ea47eSEdward Tomasz Napierala case XPT_RESET_BUS: 2540009ea47eSEdward Tomasz Napierala case XPT_TERM_IO: 2541009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "faking success for reset, abort, or term_io"); 2542009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_REQ_CMP; 2543009ea47eSEdward Tomasz Napierala break; 2544009ea47eSEdward Tomasz Napierala #endif 2545aa75114cSAlexander Motin case XPT_ABORT: 2546aa75114cSAlexander Motin iscsi_action_abort(is, ccb); 2547aa75114cSAlexander Motin return; 2548009ea47eSEdward Tomasz Napierala case XPT_SCSI_IO: 2549009ea47eSEdward Tomasz Napierala iscsi_action_scsiio(is, ccb); 2550009ea47eSEdward Tomasz Napierala return; 2551009ea47eSEdward Tomasz Napierala default: 2552009ea47eSEdward Tomasz Napierala #if 0 2553009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "got unsupported code 0x%x", ccb->ccb_h.func_code); 2554009ea47eSEdward Tomasz Napierala #endif 2555009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_FUNC_NOTAVAIL; 2556009ea47eSEdward Tomasz Napierala break; 2557009ea47eSEdward Tomasz Napierala } 2558009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2559009ea47eSEdward Tomasz Napierala } 2560009ea47eSEdward Tomasz Napierala 2561009ea47eSEdward Tomasz Napierala static void 2562481b36c6SSteven Hartland iscsi_terminate_sessions(struct iscsi_softc *sc) 2563009ea47eSEdward Tomasz Napierala { 2564009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 2565009ea47eSEdward Tomasz Napierala 2566481b36c6SSteven Hartland sx_slock(&sc->sc_lock); 2567481b36c6SSteven Hartland TAILQ_FOREACH(is, &sc->sc_sessions, is_next) 2568481b36c6SSteven Hartland iscsi_session_terminate(is); 2569481b36c6SSteven Hartland while(!TAILQ_EMPTY(&sc->sc_sessions)) { 2570481b36c6SSteven Hartland ISCSI_DEBUG("waiting for sessions to terminate"); 2571481b36c6SSteven Hartland cv_wait(&sc->sc_cv, &sc->sc_lock); 2572481b36c6SSteven Hartland } 2573481b36c6SSteven Hartland ISCSI_DEBUG("all sessions terminated"); 2574481b36c6SSteven Hartland sx_sunlock(&sc->sc_lock); 2575481b36c6SSteven Hartland } 2576481b36c6SSteven Hartland 2577481b36c6SSteven Hartland static void 2578481b36c6SSteven Hartland iscsi_shutdown_pre(struct iscsi_softc *sc) 2579481b36c6SSteven Hartland { 2580481b36c6SSteven Hartland struct iscsi_session *is; 2581481b36c6SSteven Hartland 2582481b36c6SSteven Hartland if (!fail_on_shutdown) 2583481b36c6SSteven Hartland return; 2584009ea47eSEdward Tomasz Napierala 2585e553ca49SEdward Tomasz Napierala /* 2586e553ca49SEdward Tomasz Napierala * If we have any sessions waiting for reconnection, request 2587e553ca49SEdward Tomasz Napierala * maintenance thread to fail them immediately instead of waiting 2588e553ca49SEdward Tomasz Napierala * for reconnect timeout. 2589481b36c6SSteven Hartland * 2590481b36c6SSteven Hartland * This prevents LUNs with mounted filesystems that are supported 2591481b36c6SSteven Hartland * by disconnected iSCSI sessions from hanging, however it will 2592481b36c6SSteven Hartland * fail all queued BIOs. 2593e553ca49SEdward Tomasz Napierala */ 2594481b36c6SSteven Hartland ISCSI_DEBUG("forcing failing all disconnected sessions due to shutdown"); 2595481b36c6SSteven Hartland 2596481b36c6SSteven Hartland fail_on_disconnection = 1; 2597481b36c6SSteven Hartland 2598009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 2599e553ca49SEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 2600e553ca49SEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 2601481b36c6SSteven Hartland if (!is->is_connected) { 2602481b36c6SSteven Hartland ISCSI_SESSION_DEBUG(is, "force failing disconnected session early"); 2603e553ca49SEdward Tomasz Napierala iscsi_session_reconnect(is); 2604481b36c6SSteven Hartland } 2605e553ca49SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 2606e553ca49SEdward Tomasz Napierala } 2607009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 2608009ea47eSEdward Tomasz Napierala } 2609009ea47eSEdward Tomasz Napierala 2610481b36c6SSteven Hartland static void 2611481b36c6SSteven Hartland iscsi_shutdown_post(struct iscsi_softc *sc) 2612481b36c6SSteven Hartland { 2613481b36c6SSteven Hartland 2614879e0604SMateusz Guzik if (!KERNEL_PANICKED()) { 2615481b36c6SSteven Hartland ISCSI_DEBUG("removing all sessions due to shutdown"); 2616481b36c6SSteven Hartland iscsi_terminate_sessions(sc); 2617481b36c6SSteven Hartland } 2618e54fb4ffSAndriy Gapon } 2619481b36c6SSteven Hartland 2620009ea47eSEdward Tomasz Napierala static int 2621009ea47eSEdward Tomasz Napierala iscsi_load(void) 2622009ea47eSEdward Tomasz Napierala { 2623009ea47eSEdward Tomasz Napierala int error; 2624009ea47eSEdward Tomasz Napierala 2625009ea47eSEdward Tomasz Napierala sc = malloc(sizeof(*sc), M_ISCSI, M_ZERO | M_WAITOK); 2626009ea47eSEdward Tomasz Napierala sx_init(&sc->sc_lock, "iscsi"); 2627009ea47eSEdward Tomasz Napierala TAILQ_INIT(&sc->sc_sessions); 2628009ea47eSEdward Tomasz Napierala cv_init(&sc->sc_cv, "iscsi_cv"); 2629009ea47eSEdward Tomasz Napierala 2630009ea47eSEdward Tomasz Napierala iscsi_outstanding_zone = uma_zcreate("iscsi_outstanding", 2631009ea47eSEdward Tomasz Napierala sizeof(struct iscsi_outstanding), NULL, NULL, NULL, NULL, 2632c28c09c1SEdward Tomasz Napierala UMA_ALIGN_PTR, 0); 2633009ea47eSEdward Tomasz Napierala 2634009ea47eSEdward Tomasz Napierala error = make_dev_p(MAKEDEV_CHECKNAME, &sc->sc_cdev, &iscsi_cdevsw, 2635009ea47eSEdward Tomasz Napierala NULL, UID_ROOT, GID_WHEEL, 0600, "iscsi"); 2636009ea47eSEdward Tomasz Napierala if (error != 0) { 2637009ea47eSEdward Tomasz Napierala ISCSI_WARN("failed to create device node, error %d", error); 2638009ea47eSEdward Tomasz Napierala return (error); 2639009ea47eSEdward Tomasz Napierala } 2640009ea47eSEdward Tomasz Napierala sc->sc_cdev->si_drv1 = sc; 2641009ea47eSEdward Tomasz Napierala 2642481b36c6SSteven Hartland sc->sc_shutdown_pre_eh = EVENTHANDLER_REGISTER(shutdown_pre_sync, 2643481b36c6SSteven Hartland iscsi_shutdown_pre, sc, SHUTDOWN_PRI_FIRST); 2644481b36c6SSteven Hartland /* 2645481b36c6SSteven Hartland * shutdown_post_sync needs to run after filesystem shutdown and before 2646481b36c6SSteven Hartland * CAM shutdown - otherwise when rebooting with an iSCSI session that is 2647481b36c6SSteven Hartland * disconnected but has outstanding requests, dashutdown() will hang on 2648481b36c6SSteven Hartland * cam_periph_runccb(). 2649481b36c6SSteven Hartland */ 2650481b36c6SSteven Hartland sc->sc_shutdown_post_eh = EVENTHANDLER_REGISTER(shutdown_post_sync, 2651481b36c6SSteven Hartland iscsi_shutdown_post, sc, SHUTDOWN_PRI_DEFAULT - 1); 2652009ea47eSEdward Tomasz Napierala 2653009ea47eSEdward Tomasz Napierala return (0); 2654009ea47eSEdward Tomasz Napierala } 2655009ea47eSEdward Tomasz Napierala 2656009ea47eSEdward Tomasz Napierala static int 2657009ea47eSEdward Tomasz Napierala iscsi_unload(void) 2658009ea47eSEdward Tomasz Napierala { 2659009ea47eSEdward Tomasz Napierala 266089df4847SJohn Baldwin /* Awaken any threads asleep in iscsi_ioctl(). */ 266189df4847SJohn Baldwin sx_xlock(&sc->sc_lock); 266289df4847SJohn Baldwin sc->sc_unloading = true; 266389df4847SJohn Baldwin cv_signal(&sc->sc_cv); 266489df4847SJohn Baldwin sx_xunlock(&sc->sc_lock); 266589df4847SJohn Baldwin 2666a667cf73SEdward Tomasz Napierala if (sc->sc_cdev != NULL) { 2667009ea47eSEdward Tomasz Napierala ISCSI_DEBUG("removing device node"); 2668009ea47eSEdward Tomasz Napierala destroy_dev(sc->sc_cdev); 2669009ea47eSEdward Tomasz Napierala ISCSI_DEBUG("device node removed"); 2670a667cf73SEdward Tomasz Napierala } 2671009ea47eSEdward Tomasz Napierala 2672481b36c6SSteven Hartland if (sc->sc_shutdown_pre_eh != NULL) 2673481b36c6SSteven Hartland EVENTHANDLER_DEREGISTER(shutdown_pre_sync, sc->sc_shutdown_pre_eh); 2674481b36c6SSteven Hartland if (sc->sc_shutdown_post_eh != NULL) 2675481b36c6SSteven Hartland EVENTHANDLER_DEREGISTER(shutdown_post_sync, sc->sc_shutdown_post_eh); 2676009ea47eSEdward Tomasz Napierala 2677481b36c6SSteven Hartland iscsi_terminate_sessions(sc); 2678009ea47eSEdward Tomasz Napierala 2679009ea47eSEdward Tomasz Napierala uma_zdestroy(iscsi_outstanding_zone); 2680009ea47eSEdward Tomasz Napierala sx_destroy(&sc->sc_lock); 2681009ea47eSEdward Tomasz Napierala cv_destroy(&sc->sc_cv); 2682009ea47eSEdward Tomasz Napierala free(sc, M_ISCSI); 2683009ea47eSEdward Tomasz Napierala return (0); 2684009ea47eSEdward Tomasz Napierala } 2685009ea47eSEdward Tomasz Napierala 2686009ea47eSEdward Tomasz Napierala static int 2687009ea47eSEdward Tomasz Napierala iscsi_quiesce(void) 2688009ea47eSEdward Tomasz Napierala { 2689009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 2690009ea47eSEdward Tomasz Napierala if (!TAILQ_EMPTY(&sc->sc_sessions)) { 2691009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 2692009ea47eSEdward Tomasz Napierala return (EBUSY); 2693009ea47eSEdward Tomasz Napierala } 2694009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 2695009ea47eSEdward Tomasz Napierala return (0); 2696009ea47eSEdward Tomasz Napierala } 2697009ea47eSEdward Tomasz Napierala 2698009ea47eSEdward Tomasz Napierala static int 2699009ea47eSEdward Tomasz Napierala iscsi_modevent(module_t mod, int what, void *arg) 2700009ea47eSEdward Tomasz Napierala { 2701009ea47eSEdward Tomasz Napierala int error; 2702009ea47eSEdward Tomasz Napierala 2703009ea47eSEdward Tomasz Napierala switch (what) { 2704009ea47eSEdward Tomasz Napierala case MOD_LOAD: 2705009ea47eSEdward Tomasz Napierala error = iscsi_load(); 2706009ea47eSEdward Tomasz Napierala break; 2707009ea47eSEdward Tomasz Napierala case MOD_UNLOAD: 2708009ea47eSEdward Tomasz Napierala error = iscsi_unload(); 2709009ea47eSEdward Tomasz Napierala break; 2710009ea47eSEdward Tomasz Napierala case MOD_QUIESCE: 2711009ea47eSEdward Tomasz Napierala error = iscsi_quiesce(); 2712009ea47eSEdward Tomasz Napierala break; 2713009ea47eSEdward Tomasz Napierala default: 2714009ea47eSEdward Tomasz Napierala error = EINVAL; 2715009ea47eSEdward Tomasz Napierala break; 2716009ea47eSEdward Tomasz Napierala } 2717009ea47eSEdward Tomasz Napierala return (error); 2718009ea47eSEdward Tomasz Napierala } 2719009ea47eSEdward Tomasz Napierala 2720009ea47eSEdward Tomasz Napierala moduledata_t iscsi_data = { 2721009ea47eSEdward Tomasz Napierala "iscsi", 2722009ea47eSEdward Tomasz Napierala iscsi_modevent, 2723009ea47eSEdward Tomasz Napierala 0 2724009ea47eSEdward Tomasz Napierala }; 2725009ea47eSEdward Tomasz Napierala 2726009ea47eSEdward Tomasz Napierala DECLARE_MODULE(iscsi, iscsi_data, SI_SUB_DRIVERS, SI_ORDER_MIDDLE); 2727009ea47eSEdward Tomasz Napierala MODULE_DEPEND(iscsi, cam, 1, 1, 1); 2728009ea47eSEdward Tomasz Napierala MODULE_DEPEND(iscsi, icl, 1, 1, 1); 2729