1009ea47eSEdward Tomasz Napierala /*- 2009ea47eSEdward Tomasz Napierala * Copyright (c) 2012 The FreeBSD Foundation 3009ea47eSEdward Tomasz Napierala * All rights reserved. 4009ea47eSEdward Tomasz Napierala * 5009ea47eSEdward Tomasz Napierala * This software was developed by Edward Tomasz Napierala under sponsorship 6009ea47eSEdward Tomasz Napierala * from the FreeBSD Foundation. 7009ea47eSEdward Tomasz Napierala * 8009ea47eSEdward Tomasz Napierala * Redistribution and use in source and binary forms, with or without 9009ea47eSEdward Tomasz Napierala * modification, are permitted provided that the following conditions 10009ea47eSEdward Tomasz Napierala * are met: 11009ea47eSEdward Tomasz Napierala * 1. Redistributions of source code must retain the above copyright 12009ea47eSEdward Tomasz Napierala * notice, this list of conditions and the following disclaimer. 13009ea47eSEdward Tomasz Napierala * 2. Redistributions in binary form must reproduce the above copyright 14009ea47eSEdward Tomasz Napierala * notice, this list of conditions and the following disclaimer in the 15009ea47eSEdward Tomasz Napierala * documentation and/or other materials provided with the distribution. 16009ea47eSEdward Tomasz Napierala * 17009ea47eSEdward Tomasz Napierala * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18009ea47eSEdward Tomasz Napierala * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19009ea47eSEdward Tomasz Napierala * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20009ea47eSEdward Tomasz Napierala * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21009ea47eSEdward Tomasz Napierala * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22009ea47eSEdward Tomasz Napierala * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23009ea47eSEdward Tomasz Napierala * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24009ea47eSEdward Tomasz Napierala * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25009ea47eSEdward Tomasz Napierala * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26009ea47eSEdward Tomasz Napierala * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27009ea47eSEdward Tomasz Napierala * SUCH DAMAGE. 28009ea47eSEdward Tomasz Napierala * 29009ea47eSEdward Tomasz Napierala */ 30009ea47eSEdward Tomasz Napierala 31b7a65e39SEdward Tomasz Napierala #include <sys/cdefs.h> 32b7a65e39SEdward Tomasz Napierala __FBSDID("$FreeBSD$"); 33b7a65e39SEdward Tomasz Napierala 34009ea47eSEdward Tomasz Napierala #include <sys/param.h> 35009ea47eSEdward Tomasz Napierala #include <sys/condvar.h> 36009ea47eSEdward Tomasz Napierala #include <sys/conf.h> 37a9f2f291SEdward Tomasz Napierala #include <sys/endian.h> 38009ea47eSEdward Tomasz Napierala #include <sys/eventhandler.h> 39009ea47eSEdward Tomasz Napierala #include <sys/file.h> 40009ea47eSEdward Tomasz Napierala #include <sys/kernel.h> 41009ea47eSEdward Tomasz Napierala #include <sys/kthread.h> 42009ea47eSEdward Tomasz Napierala #include <sys/lock.h> 43009ea47eSEdward Tomasz Napierala #include <sys/malloc.h> 44009ea47eSEdward Tomasz Napierala #include <sys/mutex.h> 45009ea47eSEdward Tomasz Napierala #include <sys/module.h> 46f41492b0SEdward Tomasz Napierala #include <sys/socket.h> 47009ea47eSEdward Tomasz Napierala #include <sys/sysctl.h> 48009ea47eSEdward Tomasz Napierala #include <sys/systm.h> 49009ea47eSEdward Tomasz Napierala #include <sys/sx.h> 50009ea47eSEdward Tomasz Napierala #include <vm/uma.h> 51009ea47eSEdward Tomasz Napierala 52009ea47eSEdward Tomasz Napierala #include <cam/cam.h> 53009ea47eSEdward Tomasz Napierala #include <cam/cam_ccb.h> 54009ea47eSEdward Tomasz Napierala #include <cam/cam_xpt.h> 55009ea47eSEdward Tomasz Napierala #include <cam/cam_debug.h> 56009ea47eSEdward Tomasz Napierala #include <cam/cam_sim.h> 57009ea47eSEdward Tomasz Napierala #include <cam/cam_xpt_sim.h> 58009ea47eSEdward Tomasz Napierala #include <cam/cam_xpt_periph.h> 59009ea47eSEdward Tomasz Napierala #include <cam/cam_periph.h> 60009ea47eSEdward Tomasz Napierala #include <cam/scsi/scsi_all.h> 61009ea47eSEdward Tomasz Napierala #include <cam/scsi/scsi_message.h> 62009ea47eSEdward Tomasz Napierala 63ddc5fd90SEdward Tomasz Napierala #include <dev/iscsi/icl.h> 64321b17ecSEdward Tomasz Napierala #include <dev/iscsi/icl_wrappers.h> 65ddc5fd90SEdward Tomasz Napierala #include <dev/iscsi/iscsi_ioctl.h> 66ddc5fd90SEdward Tomasz Napierala #include <dev/iscsi/iscsi_proto.h> 67ddc5fd90SEdward Tomasz Napierala #include <dev/iscsi/iscsi.h> 68009ea47eSEdward Tomasz Napierala 69009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 70009ea47eSEdward Tomasz Napierala #include <sys/socketvar.h> 71009ea47eSEdward Tomasz Napierala #endif 72009ea47eSEdward Tomasz Napierala 732ebde326SEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 742ebde326SEdward Tomasz Napierala FEATURE(iscsi_kernel_proxy, "iSCSI initiator built with ICL_KERNEL_PROXY"); 752ebde326SEdward Tomasz Napierala #endif 762ebde326SEdward Tomasz Napierala 77009ea47eSEdward Tomasz Napierala /* 78009ea47eSEdward Tomasz Napierala * XXX: This is global so the iscsi_unload() can access it. 79009ea47eSEdward Tomasz Napierala * Think about how to do this properly. 80009ea47eSEdward Tomasz Napierala */ 81009ea47eSEdward Tomasz Napierala static struct iscsi_softc *sc; 82009ea47eSEdward Tomasz Napierala 83009ea47eSEdward Tomasz Napierala SYSCTL_NODE(_kern, OID_AUTO, iscsi, CTLFLAG_RD, 0, "iSCSI initiator"); 84009ea47eSEdward Tomasz Napierala static int debug = 1; 85605a34b0SEdward Tomasz Napierala SYSCTL_INT(_kern_iscsi, OID_AUTO, debug, CTLFLAG_RWTUN, 861f6b2af2SAlexander Motin &debug, 0, "Enable debug messages"); 87009ea47eSEdward Tomasz Napierala static int ping_timeout = 5; 88605a34b0SEdward Tomasz Napierala SYSCTL_INT(_kern_iscsi, OID_AUTO, ping_timeout, CTLFLAG_RWTUN, &ping_timeout, 891f6b2af2SAlexander Motin 0, "Timeout for ping (NOP-Out) requests, in seconds"); 90009ea47eSEdward Tomasz Napierala static int iscsid_timeout = 60; 91605a34b0SEdward Tomasz Napierala SYSCTL_INT(_kern_iscsi, OID_AUTO, iscsid_timeout, CTLFLAG_RWTUN, &iscsid_timeout, 921f6b2af2SAlexander Motin 0, "Time to wait for iscsid(8) to handle reconnection, in seconds"); 93009ea47eSEdward Tomasz Napierala static int login_timeout = 60; 94605a34b0SEdward Tomasz Napierala SYSCTL_INT(_kern_iscsi, OID_AUTO, login_timeout, CTLFLAG_RWTUN, &login_timeout, 951f6b2af2SAlexander Motin 0, "Time to wait for iscsid(8) to finish Login Phase, in seconds"); 96009ea47eSEdward Tomasz Napierala static int maxtags = 255; 97605a34b0SEdward Tomasz Napierala SYSCTL_INT(_kern_iscsi, OID_AUTO, maxtags, CTLFLAG_RWTUN, &maxtags, 981f6b2af2SAlexander Motin 0, "Max number of IO requests queued"); 99f1f12e40SEdward Tomasz Napierala static int fail_on_disconnection = 0; 100f1f12e40SEdward Tomasz Napierala SYSCTL_INT(_kern_iscsi, OID_AUTO, fail_on_disconnection, CTLFLAG_RWTUN, 101f1f12e40SEdward Tomasz Napierala &fail_on_disconnection, 0, "Destroy CAM SIM on connection failure"); 102481b36c6SSteven Hartland static int fail_on_shutdown = 1; 103481b36c6SSteven Hartland SYSCTL_INT(_kern_iscsi, OID_AUTO, fail_on_shutdown, CTLFLAG_RWTUN, 104481b36c6SSteven Hartland &fail_on_shutdown, 0, "Fail disconnected sessions on shutdown"); 105009ea47eSEdward Tomasz Napierala 106009ea47eSEdward Tomasz Napierala static MALLOC_DEFINE(M_ISCSI, "iSCSI", "iSCSI initiator"); 107009ea47eSEdward Tomasz Napierala static uma_zone_t iscsi_outstanding_zone; 108009ea47eSEdward Tomasz Napierala 109009ea47eSEdward Tomasz Napierala #define CONN_SESSION(X) ((struct iscsi_session *)X->ic_prv0) 110009ea47eSEdward Tomasz Napierala #define PDU_SESSION(X) (CONN_SESSION(X->ip_conn)) 111009ea47eSEdward Tomasz Napierala 112009ea47eSEdward Tomasz Napierala #define ISCSI_DEBUG(X, ...) \ 113b1277ad1SEdward Tomasz Napierala do { \ 114b1277ad1SEdward Tomasz Napierala if (debug > 1) \ 115009ea47eSEdward Tomasz Napierala printf("%s: " X "\n", __func__, ## __VA_ARGS__);\ 116009ea47eSEdward Tomasz Napierala } while (0) 117009ea47eSEdward Tomasz Napierala 118009ea47eSEdward Tomasz Napierala #define ISCSI_WARN(X, ...) \ 119b1277ad1SEdward Tomasz Napierala do { \ 120009ea47eSEdward Tomasz Napierala if (debug > 0) { \ 121009ea47eSEdward Tomasz Napierala printf("WARNING: %s: " X "\n", \ 122009ea47eSEdward Tomasz Napierala __func__, ## __VA_ARGS__); \ 123b1277ad1SEdward Tomasz Napierala } \ 124009ea47eSEdward Tomasz Napierala } while (0) 125009ea47eSEdward Tomasz Napierala 126009ea47eSEdward Tomasz Napierala #define ISCSI_SESSION_DEBUG(S, X, ...) \ 127b1277ad1SEdward Tomasz Napierala do { \ 128009ea47eSEdward Tomasz Napierala if (debug > 1) { \ 129009ea47eSEdward Tomasz Napierala printf("%s: %s (%s): " X "\n", \ 130009ea47eSEdward Tomasz Napierala __func__, S->is_conf.isc_target_addr, \ 131009ea47eSEdward Tomasz Napierala S->is_conf.isc_target, ## __VA_ARGS__); \ 132b1277ad1SEdward Tomasz Napierala } \ 133009ea47eSEdward Tomasz Napierala } while (0) 134009ea47eSEdward Tomasz Napierala 135009ea47eSEdward Tomasz Napierala #define ISCSI_SESSION_WARN(S, X, ...) \ 136b1277ad1SEdward Tomasz Napierala do { \ 137009ea47eSEdward Tomasz Napierala if (debug > 0) { \ 138009ea47eSEdward Tomasz Napierala printf("WARNING: %s (%s): " X "\n", \ 139009ea47eSEdward Tomasz Napierala S->is_conf.isc_target_addr, \ 140009ea47eSEdward Tomasz Napierala S->is_conf.isc_target, ## __VA_ARGS__); \ 141b1277ad1SEdward Tomasz Napierala } \ 142009ea47eSEdward Tomasz Napierala } while (0) 143009ea47eSEdward Tomasz Napierala 144009ea47eSEdward Tomasz Napierala #define ISCSI_SESSION_LOCK(X) mtx_lock(&X->is_lock) 145009ea47eSEdward Tomasz Napierala #define ISCSI_SESSION_UNLOCK(X) mtx_unlock(&X->is_lock) 146009ea47eSEdward Tomasz Napierala #define ISCSI_SESSION_LOCK_ASSERT(X) mtx_assert(&X->is_lock, MA_OWNED) 147c215ad3aSAlexander Motin #define ISCSI_SESSION_LOCK_ASSERT_NOT(X) mtx_assert(&X->is_lock, MA_NOTOWNED) 148009ea47eSEdward Tomasz Napierala 149009ea47eSEdward Tomasz Napierala static int iscsi_ioctl(struct cdev *dev, u_long cmd, caddr_t arg, 150009ea47eSEdward Tomasz Napierala int mode, struct thread *td); 151009ea47eSEdward Tomasz Napierala 152009ea47eSEdward Tomasz Napierala static struct cdevsw iscsi_cdevsw = { 153009ea47eSEdward Tomasz Napierala .d_version = D_VERSION, 154009ea47eSEdward Tomasz Napierala .d_ioctl = iscsi_ioctl, 155009ea47eSEdward Tomasz Napierala .d_name = "iscsi", 156009ea47eSEdward Tomasz Napierala }; 157009ea47eSEdward Tomasz Napierala 158009ea47eSEdward Tomasz Napierala static void iscsi_pdu_queue_locked(struct icl_pdu *request); 159009ea47eSEdward Tomasz Napierala static void iscsi_pdu_queue(struct icl_pdu *request); 160009ea47eSEdward Tomasz Napierala static void iscsi_pdu_update_statsn(const struct icl_pdu *response); 161009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_nop_in(struct icl_pdu *response); 162009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_scsi_response(struct icl_pdu *response); 163aa75114cSAlexander Motin static void iscsi_pdu_handle_task_response(struct icl_pdu *response); 164009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_data_in(struct icl_pdu *response); 165009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_logout_response(struct icl_pdu *response); 166009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_r2t(struct icl_pdu *response); 167009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_async_message(struct icl_pdu *response); 168009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_reject(struct icl_pdu *response); 169009ea47eSEdward Tomasz Napierala static void iscsi_session_reconnect(struct iscsi_session *is); 170009ea47eSEdward Tomasz Napierala static void iscsi_session_terminate(struct iscsi_session *is); 171009ea47eSEdward Tomasz Napierala static void iscsi_action(struct cam_sim *sim, union ccb *ccb); 172009ea47eSEdward Tomasz Napierala static void iscsi_poll(struct cam_sim *sim); 173009ea47eSEdward Tomasz Napierala static struct iscsi_outstanding *iscsi_outstanding_find(struct iscsi_session *is, 174009ea47eSEdward Tomasz Napierala uint32_t initiator_task_tag); 175aa75114cSAlexander Motin static struct iscsi_outstanding *iscsi_outstanding_add(struct iscsi_session *is, 176604c023fSEdward Tomasz Napierala struct icl_pdu *request, union ccb *ccb, 177604c023fSEdward Tomasz Napierala uint32_t *initiator_task_tagp); 178009ea47eSEdward Tomasz Napierala static void iscsi_outstanding_remove(struct iscsi_session *is, 179009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io); 180009ea47eSEdward Tomasz Napierala 181009ea47eSEdward Tomasz Napierala static bool 182009ea47eSEdward Tomasz Napierala iscsi_pdu_prepare(struct icl_pdu *request) 183009ea47eSEdward Tomasz Napierala { 184009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 185009ea47eSEdward Tomasz Napierala struct iscsi_bhs_scsi_command *bhssc; 186009ea47eSEdward Tomasz Napierala 187009ea47eSEdward Tomasz Napierala is = PDU_SESSION(request); 188009ea47eSEdward Tomasz Napierala 189009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 190009ea47eSEdward Tomasz Napierala 191009ea47eSEdward Tomasz Napierala /* 192009ea47eSEdward Tomasz Napierala * We're only using fields common for all the request 193009ea47eSEdward Tomasz Napierala * (initiator -> target) PDUs. 194009ea47eSEdward Tomasz Napierala */ 195009ea47eSEdward Tomasz Napierala bhssc = (struct iscsi_bhs_scsi_command *)request->ip_bhs; 196009ea47eSEdward Tomasz Napierala 197009ea47eSEdward Tomasz Napierala /* 198009ea47eSEdward Tomasz Napierala * Data-Out PDU does not contain CmdSN. 199009ea47eSEdward Tomasz Napierala */ 200009ea47eSEdward Tomasz Napierala if (bhssc->bhssc_opcode != ISCSI_BHS_OPCODE_SCSI_DATA_OUT) { 2012124e3b0SAlexander Motin if (ISCSI_SNGT(is->is_cmdsn, is->is_maxcmdsn) && 202009ea47eSEdward Tomasz Napierala (bhssc->bhssc_opcode & ISCSI_BHS_OPCODE_IMMEDIATE) == 0) { 203009ea47eSEdward Tomasz Napierala /* 204009ea47eSEdward Tomasz Napierala * Current MaxCmdSN prevents us from sending any more 205009ea47eSEdward Tomasz Napierala * SCSI Command PDUs to the target; postpone the PDU. 206009ea47eSEdward Tomasz Napierala * It will get resent by either iscsi_pdu_queue(), 207009ea47eSEdward Tomasz Napierala * or by maintenance thread. 208009ea47eSEdward Tomasz Napierala */ 209009ea47eSEdward Tomasz Napierala #if 0 2102124e3b0SAlexander Motin ISCSI_SESSION_DEBUG(is, "postponing send, CmdSN %u, " 2112124e3b0SAlexander Motin "ExpCmdSN %u, MaxCmdSN %u, opcode 0x%x", 2122124e3b0SAlexander Motin is->is_cmdsn, is->is_expcmdsn, is->is_maxcmdsn, 2132124e3b0SAlexander Motin bhssc->bhssc_opcode); 214009ea47eSEdward Tomasz Napierala #endif 215009ea47eSEdward Tomasz Napierala return (true); 216009ea47eSEdward Tomasz Napierala } 217009ea47eSEdward Tomasz Napierala bhssc->bhssc_cmdsn = htonl(is->is_cmdsn); 218009ea47eSEdward Tomasz Napierala if ((bhssc->bhssc_opcode & ISCSI_BHS_OPCODE_IMMEDIATE) == 0) 219009ea47eSEdward Tomasz Napierala is->is_cmdsn++; 220009ea47eSEdward Tomasz Napierala } 221009ea47eSEdward Tomasz Napierala bhssc->bhssc_expstatsn = htonl(is->is_statsn + 1); 222009ea47eSEdward Tomasz Napierala 223009ea47eSEdward Tomasz Napierala return (false); 224009ea47eSEdward Tomasz Napierala } 225009ea47eSEdward Tomasz Napierala 226009ea47eSEdward Tomasz Napierala static void 227009ea47eSEdward Tomasz Napierala iscsi_session_send_postponed(struct iscsi_session *is) 228009ea47eSEdward Tomasz Napierala { 229009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 230009ea47eSEdward Tomasz Napierala bool postpone; 231009ea47eSEdward Tomasz Napierala 232009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 233009ea47eSEdward Tomasz Napierala 2344c9ea0ceSAlexander Motin if (STAILQ_EMPTY(&is->is_postponed)) 2354c9ea0ceSAlexander Motin return; 2364c9ea0ceSAlexander Motin while ((request = STAILQ_FIRST(&is->is_postponed)) != NULL) { 237009ea47eSEdward Tomasz Napierala postpone = iscsi_pdu_prepare(request); 238009ea47eSEdward Tomasz Napierala if (postpone) 2394c9ea0ceSAlexander Motin return; 24016c158a5SEdward Tomasz Napierala STAILQ_REMOVE_HEAD(&is->is_postponed, ip_next); 241009ea47eSEdward Tomasz Napierala icl_pdu_queue(request); 242009ea47eSEdward Tomasz Napierala } 2434c9ea0ceSAlexander Motin xpt_release_simq(is->is_sim, 1); 244009ea47eSEdward Tomasz Napierala } 245009ea47eSEdward Tomasz Napierala 246009ea47eSEdward Tomasz Napierala static void 247009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(struct icl_pdu *request) 248009ea47eSEdward Tomasz Napierala { 249009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 250009ea47eSEdward Tomasz Napierala bool postpone; 251009ea47eSEdward Tomasz Napierala 252009ea47eSEdward Tomasz Napierala is = PDU_SESSION(request); 253009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 254009ea47eSEdward Tomasz Napierala iscsi_session_send_postponed(is); 255009ea47eSEdward Tomasz Napierala postpone = iscsi_pdu_prepare(request); 256009ea47eSEdward Tomasz Napierala if (postpone) { 2574c9ea0ceSAlexander Motin if (STAILQ_EMPTY(&is->is_postponed)) 2584c9ea0ceSAlexander Motin xpt_freeze_simq(is->is_sim, 1); 25916c158a5SEdward Tomasz Napierala STAILQ_INSERT_TAIL(&is->is_postponed, request, ip_next); 260009ea47eSEdward Tomasz Napierala return; 261009ea47eSEdward Tomasz Napierala } 262009ea47eSEdward Tomasz Napierala icl_pdu_queue(request); 263009ea47eSEdward Tomasz Napierala } 264009ea47eSEdward Tomasz Napierala 265009ea47eSEdward Tomasz Napierala static void 266009ea47eSEdward Tomasz Napierala iscsi_pdu_queue(struct icl_pdu *request) 267009ea47eSEdward Tomasz Napierala { 268009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 269009ea47eSEdward Tomasz Napierala 270009ea47eSEdward Tomasz Napierala is = PDU_SESSION(request); 271009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 272009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(request); 273009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 274009ea47eSEdward Tomasz Napierala } 275009ea47eSEdward Tomasz Napierala 276009ea47eSEdward Tomasz Napierala static void 277009ea47eSEdward Tomasz Napierala iscsi_session_logout(struct iscsi_session *is) 278009ea47eSEdward Tomasz Napierala { 279009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 280009ea47eSEdward Tomasz Napierala struct iscsi_bhs_logout_request *bhslr; 281009ea47eSEdward Tomasz Napierala 282d2d52b00SEdward Tomasz Napierala request = icl_pdu_new(is->is_conn, M_NOWAIT); 283009ea47eSEdward Tomasz Napierala if (request == NULL) 284009ea47eSEdward Tomasz Napierala return; 285009ea47eSEdward Tomasz Napierala 286009ea47eSEdward Tomasz Napierala bhslr = (struct iscsi_bhs_logout_request *)request->ip_bhs; 287009ea47eSEdward Tomasz Napierala bhslr->bhslr_opcode = ISCSI_BHS_OPCODE_LOGOUT_REQUEST; 288009ea47eSEdward Tomasz Napierala bhslr->bhslr_reason = BHSLR_REASON_CLOSE_SESSION; 289009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(request); 290009ea47eSEdward Tomasz Napierala } 291009ea47eSEdward Tomasz Napierala 292009ea47eSEdward Tomasz Napierala static void 293aa75114cSAlexander Motin iscsi_session_terminate_task(struct iscsi_session *is, 294aa75114cSAlexander Motin struct iscsi_outstanding *io, bool requeue) 295aa75114cSAlexander Motin { 296aa75114cSAlexander Motin 297e204e2cdSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 298e204e2cdSEdward Tomasz Napierala 299aa75114cSAlexander Motin if (io->io_ccb != NULL) { 300aa75114cSAlexander Motin io->io_ccb->ccb_h.status &= ~(CAM_SIM_QUEUED | CAM_STATUS_MASK); 301aa75114cSAlexander Motin if (requeue) 302aa75114cSAlexander Motin io->io_ccb->ccb_h.status |= CAM_REQUEUE_REQ; 303aa75114cSAlexander Motin else 304aa75114cSAlexander Motin io->io_ccb->ccb_h.status |= CAM_REQ_ABORTED; 305aa75114cSAlexander Motin if ((io->io_ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 306aa75114cSAlexander Motin io->io_ccb->ccb_h.status |= CAM_DEV_QFRZN; 307aa75114cSAlexander Motin xpt_freeze_devq(io->io_ccb->ccb_h.path, 1); 308aa75114cSAlexander Motin ISCSI_SESSION_DEBUG(is, "freezing devq"); 309aa75114cSAlexander Motin } 310aa75114cSAlexander Motin xpt_done(io->io_ccb); 311aa75114cSAlexander Motin } 312aa75114cSAlexander Motin iscsi_outstanding_remove(is, io); 313aa75114cSAlexander Motin } 314aa75114cSAlexander Motin 315aa75114cSAlexander Motin static void 316009ea47eSEdward Tomasz Napierala iscsi_session_terminate_tasks(struct iscsi_session *is, bool requeue) 317009ea47eSEdward Tomasz Napierala { 318009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io, *tmp; 319009ea47eSEdward Tomasz Napierala 320009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 321009ea47eSEdward Tomasz Napierala 322009ea47eSEdward Tomasz Napierala TAILQ_FOREACH_SAFE(io, &is->is_outstanding, io_next, tmp) { 323aa75114cSAlexander Motin iscsi_session_terminate_task(is, io, requeue); 324009ea47eSEdward Tomasz Napierala } 325009ea47eSEdward Tomasz Napierala } 326009ea47eSEdward Tomasz Napierala 327009ea47eSEdward Tomasz Napierala static void 328f1f12e40SEdward Tomasz Napierala iscsi_session_cleanup(struct iscsi_session *is, bool destroy_sim) 329009ea47eSEdward Tomasz Napierala { 330009ea47eSEdward Tomasz Napierala struct icl_pdu *pdu; 331009ea47eSEdward Tomasz Napierala 332f1f12e40SEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 333009ea47eSEdward Tomasz Napierala 334009ea47eSEdward Tomasz Napierala /* 335009ea47eSEdward Tomasz Napierala * Don't queue any new PDUs. 336009ea47eSEdward Tomasz Napierala */ 337009ea47eSEdward Tomasz Napierala if (is->is_sim != NULL && is->is_simq_frozen == false) { 338009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing"); 339009ea47eSEdward Tomasz Napierala xpt_freeze_simq(is->is_sim, 1); 340009ea47eSEdward Tomasz Napierala is->is_simq_frozen = true; 341009ea47eSEdward Tomasz Napierala } 342009ea47eSEdward Tomasz Napierala 343009ea47eSEdward Tomasz Napierala /* 344009ea47eSEdward Tomasz Napierala * Remove postponed PDUs. 345009ea47eSEdward Tomasz Napierala */ 3464c9ea0ceSAlexander Motin if (!STAILQ_EMPTY(&is->is_postponed)) 3474c9ea0ceSAlexander Motin xpt_release_simq(is->is_sim, 1); 3484c9ea0ceSAlexander Motin while ((pdu = STAILQ_FIRST(&is->is_postponed)) != NULL) { 34916c158a5SEdward Tomasz Napierala STAILQ_REMOVE_HEAD(&is->is_postponed, ip_next); 350009ea47eSEdward Tomasz Napierala icl_pdu_free(pdu); 351009ea47eSEdward Tomasz Napierala } 352009ea47eSEdward Tomasz Napierala 353f1f12e40SEdward Tomasz Napierala if (destroy_sim == false) { 354009ea47eSEdward Tomasz Napierala /* 355009ea47eSEdward Tomasz Napierala * Terminate SCSI tasks, asking CAM to requeue them. 356009ea47eSEdward Tomasz Napierala */ 357009ea47eSEdward Tomasz Napierala iscsi_session_terminate_tasks(is, true); 358f1f12e40SEdward Tomasz Napierala return; 359f1f12e40SEdward Tomasz Napierala } 360f1f12e40SEdward Tomasz Napierala 361f1f12e40SEdward Tomasz Napierala iscsi_session_terminate_tasks(is, false); 362f1f12e40SEdward Tomasz Napierala 363f1f12e40SEdward Tomasz Napierala if (is->is_sim == NULL) 364f1f12e40SEdward Tomasz Napierala return; 365f1f12e40SEdward Tomasz Napierala 366f1f12e40SEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "deregistering SIM"); 367f1f12e40SEdward Tomasz Napierala xpt_async(AC_LOST_DEVICE, is->is_path, NULL); 368f1f12e40SEdward Tomasz Napierala 369f1f12e40SEdward Tomasz Napierala if (is->is_simq_frozen) { 370f1f12e40SEdward Tomasz Napierala xpt_release_simq(is->is_sim, 1); 371f1f12e40SEdward Tomasz Napierala is->is_simq_frozen = false; 372f1f12e40SEdward Tomasz Napierala } 373f1f12e40SEdward Tomasz Napierala 374f1f12e40SEdward Tomasz Napierala xpt_free_path(is->is_path); 375f1f12e40SEdward Tomasz Napierala is->is_path = NULL; 376f1f12e40SEdward Tomasz Napierala xpt_bus_deregister(cam_sim_path(is->is_sim)); 377f1f12e40SEdward Tomasz Napierala cam_sim_free(is->is_sim, TRUE /*free_devq*/); 378f1f12e40SEdward Tomasz Napierala is->is_sim = NULL; 379f1f12e40SEdward Tomasz Napierala is->is_devq = NULL; 380f1f12e40SEdward Tomasz Napierala } 381f1f12e40SEdward Tomasz Napierala 382f1f12e40SEdward Tomasz Napierala static void 383f1f12e40SEdward Tomasz Napierala iscsi_maintenance_thread_reconnect(struct iscsi_session *is) 384f1f12e40SEdward Tomasz Napierala { 385f1f12e40SEdward Tomasz Napierala 386f1f12e40SEdward Tomasz Napierala icl_conn_close(is->is_conn); 387f1f12e40SEdward Tomasz Napierala 388f1f12e40SEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 389f1f12e40SEdward Tomasz Napierala 390f1f12e40SEdward Tomasz Napierala is->is_connected = false; 391f1f12e40SEdward Tomasz Napierala is->is_reconnecting = false; 392f1f12e40SEdward Tomasz Napierala is->is_login_phase = false; 393f1f12e40SEdward Tomasz Napierala 394f1f12e40SEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 395f1f12e40SEdward Tomasz Napierala if (is->is_login_pdu != NULL) { 396f1f12e40SEdward Tomasz Napierala icl_pdu_free(is->is_login_pdu); 397f1f12e40SEdward Tomasz Napierala is->is_login_pdu = NULL; 398f1f12e40SEdward Tomasz Napierala } 399f1f12e40SEdward Tomasz Napierala cv_signal(&is->is_login_cv); 400f1f12e40SEdward Tomasz Napierala #endif 401f1f12e40SEdward Tomasz Napierala 402f1f12e40SEdward Tomasz Napierala if (fail_on_disconnection) { 403f1f12e40SEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "connection failed, destroying devices"); 404f1f12e40SEdward Tomasz Napierala iscsi_session_cleanup(is, true); 405f1f12e40SEdward Tomasz Napierala } else { 406f1f12e40SEdward Tomasz Napierala iscsi_session_cleanup(is, false); 407f1f12e40SEdward Tomasz Napierala } 408009ea47eSEdward Tomasz Napierala 409009ea47eSEdward Tomasz Napierala KASSERT(TAILQ_EMPTY(&is->is_outstanding), 410009ea47eSEdward Tomasz Napierala ("destroying session with active tasks")); 41116c158a5SEdward Tomasz Napierala KASSERT(STAILQ_EMPTY(&is->is_postponed), 412009ea47eSEdward Tomasz Napierala ("destroying session with postponed PDUs")); 413009ea47eSEdward Tomasz Napierala 414ba165a31SEdward Tomasz Napierala if (is->is_conf.isc_enable == 0 && is->is_conf.isc_discovery == 0) { 415ba165a31SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 416ba165a31SEdward Tomasz Napierala return; 417ba165a31SEdward Tomasz Napierala } 418ba165a31SEdward Tomasz Napierala 419009ea47eSEdward Tomasz Napierala /* 420009ea47eSEdward Tomasz Napierala * Request immediate reconnection from iscsid(8). 421009ea47eSEdward Tomasz Napierala */ 422009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "waking up iscsid(8)"); 423009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = true; 424009ea47eSEdward Tomasz Napierala strlcpy(is->is_reason, "Waiting for iscsid(8)", sizeof(is->is_reason)); 425009ea47eSEdward Tomasz Napierala is->is_timeout = 0; 426009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 427009ea47eSEdward Tomasz Napierala cv_signal(&is->is_softc->sc_cv); 428009ea47eSEdward Tomasz Napierala } 429009ea47eSEdward Tomasz Napierala 430009ea47eSEdward Tomasz Napierala static void 431009ea47eSEdward Tomasz Napierala iscsi_maintenance_thread_terminate(struct iscsi_session *is) 432009ea47eSEdward Tomasz Napierala { 433009ea47eSEdward Tomasz Napierala struct iscsi_softc *sc; 434009ea47eSEdward Tomasz Napierala 435009ea47eSEdward Tomasz Napierala sc = is->is_softc; 436009ea47eSEdward Tomasz Napierala sx_xlock(&sc->sc_lock); 437*20e9cab5SAndriy Gapon TAILQ_REMOVE(&sc->sc_sessions, is, is_next); 438*20e9cab5SAndriy Gapon sx_xunlock(&sc->sc_lock); 439009ea47eSEdward Tomasz Napierala 440009ea47eSEdward Tomasz Napierala icl_conn_close(is->is_conn); 441674074daSEdward Tomasz Napierala callout_drain(&is->is_callout); 442009ea47eSEdward Tomasz Napierala 443009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 444009ea47eSEdward Tomasz Napierala 445009ea47eSEdward Tomasz Napierala KASSERT(is->is_terminating, ("is_terminating == false")); 446009ea47eSEdward Tomasz Napierala 447009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 448009ea47eSEdward Tomasz Napierala if (is->is_login_pdu != NULL) { 449009ea47eSEdward Tomasz Napierala icl_pdu_free(is->is_login_pdu); 450009ea47eSEdward Tomasz Napierala is->is_login_pdu = NULL; 451009ea47eSEdward Tomasz Napierala } 452009ea47eSEdward Tomasz Napierala cv_signal(&is->is_login_cv); 453009ea47eSEdward Tomasz Napierala #endif 454009ea47eSEdward Tomasz Napierala 455f1f12e40SEdward Tomasz Napierala iscsi_session_cleanup(is, true); 456009ea47eSEdward Tomasz Napierala 457009ea47eSEdward Tomasz Napierala KASSERT(TAILQ_EMPTY(&is->is_outstanding), 458009ea47eSEdward Tomasz Napierala ("destroying session with active tasks")); 45916c158a5SEdward Tomasz Napierala KASSERT(STAILQ_EMPTY(&is->is_postponed), 460009ea47eSEdward Tomasz Napierala ("destroying session with postponed PDUs")); 461009ea47eSEdward Tomasz Napierala 462009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 463009ea47eSEdward Tomasz Napierala 464009ea47eSEdward Tomasz Napierala icl_conn_free(is->is_conn); 465009ea47eSEdward Tomasz Napierala mtx_destroy(&is->is_lock); 466009ea47eSEdward Tomasz Napierala cv_destroy(&is->is_maintenance_cv); 467009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 468009ea47eSEdward Tomasz Napierala cv_destroy(&is->is_login_cv); 469009ea47eSEdward Tomasz Napierala #endif 470481b36c6SSteven Hartland 471009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "terminated"); 472009ea47eSEdward Tomasz Napierala free(is, M_ISCSI); 473009ea47eSEdward Tomasz Napierala 474009ea47eSEdward Tomasz Napierala /* 475009ea47eSEdward Tomasz Napierala * The iscsi_unload() routine might be waiting. 476009ea47eSEdward Tomasz Napierala */ 477009ea47eSEdward Tomasz Napierala cv_signal(&sc->sc_cv); 478009ea47eSEdward Tomasz Napierala } 479009ea47eSEdward Tomasz Napierala 480009ea47eSEdward Tomasz Napierala static void 481009ea47eSEdward Tomasz Napierala iscsi_maintenance_thread(void *arg) 482009ea47eSEdward Tomasz Napierala { 4835b338bc0SAlexander Motin struct iscsi_session *is = arg; 484009ea47eSEdward Tomasz Napierala 485009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 4865b338bc0SAlexander Motin for (;;) { 487009ea47eSEdward Tomasz Napierala if (is->is_reconnecting == false && 488009ea47eSEdward Tomasz Napierala is->is_terminating == false && 4895b338bc0SAlexander Motin (STAILQ_EMPTY(&is->is_postponed) || 4905b338bc0SAlexander Motin ISCSI_SNGT(is->is_cmdsn, is->is_maxcmdsn))) 491009ea47eSEdward Tomasz Napierala cv_wait(&is->is_maintenance_cv, &is->is_lock); 492009ea47eSEdward Tomasz Napierala 493481b36c6SSteven Hartland /* Terminate supersedes reconnect. */ 494009ea47eSEdward Tomasz Napierala if (is->is_terminating) { 495009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 496009ea47eSEdward Tomasz Napierala iscsi_maintenance_thread_terminate(is); 497009ea47eSEdward Tomasz Napierala kthread_exit(); 498009ea47eSEdward Tomasz Napierala return; 499009ea47eSEdward Tomasz Napierala } 500009ea47eSEdward Tomasz Napierala 501481b36c6SSteven Hartland if (is->is_reconnecting) { 502481b36c6SSteven Hartland ISCSI_SESSION_UNLOCK(is); 503481b36c6SSteven Hartland iscsi_maintenance_thread_reconnect(is); 5045b338bc0SAlexander Motin ISCSI_SESSION_LOCK(is); 505481b36c6SSteven Hartland continue; 506481b36c6SSteven Hartland } 507481b36c6SSteven Hartland 508009ea47eSEdward Tomasz Napierala iscsi_session_send_postponed(is); 509009ea47eSEdward Tomasz Napierala } 5105b338bc0SAlexander Motin ISCSI_SESSION_UNLOCK(is); 511009ea47eSEdward Tomasz Napierala } 512009ea47eSEdward Tomasz Napierala 513009ea47eSEdward Tomasz Napierala static void 514009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(struct iscsi_session *is) 515009ea47eSEdward Tomasz Napierala { 516009ea47eSEdward Tomasz Napierala 517009ea47eSEdward Tomasz Napierala /* 518009ea47eSEdward Tomasz Napierala * XXX: We can't use locking here, because 519009ea47eSEdward Tomasz Napierala * it's being called from various contexts. 520009ea47eSEdward Tomasz Napierala * Hope it doesn't break anything. 521009ea47eSEdward Tomasz Napierala */ 522009ea47eSEdward Tomasz Napierala if (is->is_reconnecting) 523009ea47eSEdward Tomasz Napierala return; 524009ea47eSEdward Tomasz Napierala 525009ea47eSEdward Tomasz Napierala is->is_reconnecting = true; 526009ea47eSEdward Tomasz Napierala cv_signal(&is->is_maintenance_cv); 527009ea47eSEdward Tomasz Napierala } 528009ea47eSEdward Tomasz Napierala 529009ea47eSEdward Tomasz Napierala static void 530009ea47eSEdward Tomasz Napierala iscsi_session_terminate(struct iscsi_session *is) 531009ea47eSEdward Tomasz Napierala { 532674074daSEdward Tomasz Napierala 533009ea47eSEdward Tomasz Napierala if (is->is_terminating) 534009ea47eSEdward Tomasz Napierala return; 535009ea47eSEdward Tomasz Napierala 536009ea47eSEdward Tomasz Napierala is->is_terminating = true; 537009ea47eSEdward Tomasz Napierala 538009ea47eSEdward Tomasz Napierala #if 0 539009ea47eSEdward Tomasz Napierala iscsi_session_logout(is); 540009ea47eSEdward Tomasz Napierala #endif 541009ea47eSEdward Tomasz Napierala cv_signal(&is->is_maintenance_cv); 542009ea47eSEdward Tomasz Napierala } 543009ea47eSEdward Tomasz Napierala 544009ea47eSEdward Tomasz Napierala static void 545009ea47eSEdward Tomasz Napierala iscsi_callout(void *context) 546009ea47eSEdward Tomasz Napierala { 547009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 548009ea47eSEdward Tomasz Napierala struct iscsi_bhs_nop_out *bhsno; 549009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 550009ea47eSEdward Tomasz Napierala bool reconnect_needed = false; 551009ea47eSEdward Tomasz Napierala 552009ea47eSEdward Tomasz Napierala is = context; 553009ea47eSEdward Tomasz Napierala 554674074daSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 555674074daSEdward Tomasz Napierala if (is->is_terminating) { 556674074daSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 557009ea47eSEdward Tomasz Napierala return; 558674074daSEdward Tomasz Napierala } 559009ea47eSEdward Tomasz Napierala 560009ea47eSEdward Tomasz Napierala callout_schedule(&is->is_callout, 1 * hz); 561009ea47eSEdward Tomasz Napierala 562ba165a31SEdward Tomasz Napierala if (is->is_conf.isc_enable == 0) 563ba165a31SEdward Tomasz Napierala goto out; 564ba165a31SEdward Tomasz Napierala 565009ea47eSEdward Tomasz Napierala is->is_timeout++; 566009ea47eSEdward Tomasz Napierala 567009ea47eSEdward Tomasz Napierala if (is->is_waiting_for_iscsid) { 5682c5b89e5SEdward Tomasz Napierala if (iscsid_timeout > 0 && is->is_timeout > iscsid_timeout) { 569009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "timed out waiting for iscsid(8) " 570009ea47eSEdward Tomasz Napierala "for %d seconds; reconnecting", 571009ea47eSEdward Tomasz Napierala is->is_timeout); 572009ea47eSEdward Tomasz Napierala reconnect_needed = true; 573009ea47eSEdward Tomasz Napierala } 574009ea47eSEdward Tomasz Napierala goto out; 575009ea47eSEdward Tomasz Napierala } 576009ea47eSEdward Tomasz Napierala 577009ea47eSEdward Tomasz Napierala if (is->is_login_phase) { 5782c5b89e5SEdward Tomasz Napierala if (login_timeout > 0 && is->is_timeout > login_timeout) { 579009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "login timed out after %d seconds; " 580009ea47eSEdward Tomasz Napierala "reconnecting", is->is_timeout); 581009ea47eSEdward Tomasz Napierala reconnect_needed = true; 582009ea47eSEdward Tomasz Napierala } 583009ea47eSEdward Tomasz Napierala goto out; 584009ea47eSEdward Tomasz Napierala } 585009ea47eSEdward Tomasz Napierala 5862c5b89e5SEdward Tomasz Napierala if (ping_timeout <= 0) { 5872c5b89e5SEdward Tomasz Napierala /* 5882c5b89e5SEdward Tomasz Napierala * Pings are disabled. Don't send NOP-Out in this case. 5892c5b89e5SEdward Tomasz Napierala * Reset the timeout, to avoid triggering reconnection, 5902c5b89e5SEdward Tomasz Napierala * should the user decide to reenable them. 5912c5b89e5SEdward Tomasz Napierala */ 5922c5b89e5SEdward Tomasz Napierala is->is_timeout = 0; 5932c5b89e5SEdward Tomasz Napierala goto out; 5942c5b89e5SEdward Tomasz Napierala } 5952c5b89e5SEdward Tomasz Napierala 596009ea47eSEdward Tomasz Napierala if (is->is_timeout >= ping_timeout) { 597009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "no ping reply (NOP-In) after %d seconds; " 598009ea47eSEdward Tomasz Napierala "reconnecting", ping_timeout); 599009ea47eSEdward Tomasz Napierala reconnect_needed = true; 600009ea47eSEdward Tomasz Napierala goto out; 601009ea47eSEdward Tomasz Napierala } 602009ea47eSEdward Tomasz Napierala 603009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 604009ea47eSEdward Tomasz Napierala 605009ea47eSEdward Tomasz Napierala /* 606009ea47eSEdward Tomasz Napierala * If the ping was reset less than one second ago - which means 607009ea47eSEdward Tomasz Napierala * that we've received some PDU during the last second - assume 608009ea47eSEdward Tomasz Napierala * the traffic flows correctly and don't bother sending a NOP-Out. 609009ea47eSEdward Tomasz Napierala * 610009ea47eSEdward Tomasz Napierala * (It's 2 - one for one second, and one for incrementing is_timeout 611009ea47eSEdward Tomasz Napierala * earlier in this routine.) 612009ea47eSEdward Tomasz Napierala */ 613009ea47eSEdward Tomasz Napierala if (is->is_timeout < 2) 614009ea47eSEdward Tomasz Napierala return; 615009ea47eSEdward Tomasz Napierala 616d2d52b00SEdward Tomasz Napierala request = icl_pdu_new(is->is_conn, M_NOWAIT); 61746aaea89SEdward Tomasz Napierala if (request == NULL) { 61846aaea89SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate PDU"); 61946aaea89SEdward Tomasz Napierala return; 62046aaea89SEdward Tomasz Napierala } 621009ea47eSEdward Tomasz Napierala bhsno = (struct iscsi_bhs_nop_out *)request->ip_bhs; 622009ea47eSEdward Tomasz Napierala bhsno->bhsno_opcode = ISCSI_BHS_OPCODE_NOP_OUT | 623009ea47eSEdward Tomasz Napierala ISCSI_BHS_OPCODE_IMMEDIATE; 624009ea47eSEdward Tomasz Napierala bhsno->bhsno_flags = 0x80; 625009ea47eSEdward Tomasz Napierala bhsno->bhsno_target_transfer_tag = 0xffffffff; 626009ea47eSEdward Tomasz Napierala iscsi_pdu_queue(request); 627009ea47eSEdward Tomasz Napierala return; 628009ea47eSEdward Tomasz Napierala 629009ea47eSEdward Tomasz Napierala out: 630481b36c6SSteven Hartland if (is->is_terminating) { 631481b36c6SSteven Hartland ISCSI_SESSION_UNLOCK(is); 632481b36c6SSteven Hartland return; 633481b36c6SSteven Hartland } 634481b36c6SSteven Hartland 635009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 636009ea47eSEdward Tomasz Napierala 637009ea47eSEdward Tomasz Napierala if (reconnect_needed) 638009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 639009ea47eSEdward Tomasz Napierala } 640009ea47eSEdward Tomasz Napierala 641009ea47eSEdward Tomasz Napierala static void 642009ea47eSEdward Tomasz Napierala iscsi_pdu_update_statsn(const struct icl_pdu *response) 643009ea47eSEdward Tomasz Napierala { 644009ea47eSEdward Tomasz Napierala const struct iscsi_bhs_data_in *bhsdi; 645009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 6462124e3b0SAlexander Motin uint32_t expcmdsn, maxcmdsn, statsn; 647009ea47eSEdward Tomasz Napierala 648009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 649009ea47eSEdward Tomasz Napierala 650009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 651009ea47eSEdward Tomasz Napierala 652009ea47eSEdward Tomasz Napierala /* 653009ea47eSEdward Tomasz Napierala * We're only using fields common for all the response 654009ea47eSEdward Tomasz Napierala * (target -> initiator) PDUs. 655009ea47eSEdward Tomasz Napierala */ 656009ea47eSEdward Tomasz Napierala bhsdi = (const struct iscsi_bhs_data_in *)response->ip_bhs; 657009ea47eSEdward Tomasz Napierala /* 658009ea47eSEdward Tomasz Napierala * Ok, I lied. In case of Data-In, "The fields StatSN, Status, 659009ea47eSEdward Tomasz Napierala * and Residual Count only have meaningful content if the S bit 660009ea47eSEdward Tomasz Napierala * is set to 1", so we also need to check the bit specific for 661009ea47eSEdward Tomasz Napierala * Data-In PDU. 662009ea47eSEdward Tomasz Napierala */ 663009ea47eSEdward Tomasz Napierala if (bhsdi->bhsdi_opcode != ISCSI_BHS_OPCODE_SCSI_DATA_IN || 664009ea47eSEdward Tomasz Napierala (bhsdi->bhsdi_flags & BHSDI_FLAGS_S) != 0) { 6652124e3b0SAlexander Motin statsn = ntohl(bhsdi->bhsdi_statsn); 6662124e3b0SAlexander Motin if (statsn != is->is_statsn && statsn != (is->is_statsn + 1)) { 6672124e3b0SAlexander Motin /* XXX: This is normal situation for MCS */ 6682124e3b0SAlexander Motin ISCSI_SESSION_WARN(is, "PDU 0x%x StatSN %u != " 6692124e3b0SAlexander Motin "session ExpStatSN %u (or + 1); reconnecting", 6702124e3b0SAlexander Motin bhsdi->bhsdi_opcode, statsn, is->is_statsn); 6712124e3b0SAlexander Motin iscsi_session_reconnect(is); 672009ea47eSEdward Tomasz Napierala } 6732124e3b0SAlexander Motin if (ISCSI_SNGT(statsn, is->is_statsn)) 6742124e3b0SAlexander Motin is->is_statsn = statsn; 675009ea47eSEdward Tomasz Napierala } 676009ea47eSEdward Tomasz Napierala 677009ea47eSEdward Tomasz Napierala expcmdsn = ntohl(bhsdi->bhsdi_expcmdsn); 678009ea47eSEdward Tomasz Napierala maxcmdsn = ntohl(bhsdi->bhsdi_maxcmdsn); 679009ea47eSEdward Tomasz Napierala 6802124e3b0SAlexander Motin if (ISCSI_SNLT(maxcmdsn + 1, expcmdsn)) { 6812124e3b0SAlexander Motin ISCSI_SESSION_DEBUG(is, 6822124e3b0SAlexander Motin "PDU MaxCmdSN %u + 1 < PDU ExpCmdSN %u; ignoring", 683009ea47eSEdward Tomasz Napierala maxcmdsn, expcmdsn); 684009ea47eSEdward Tomasz Napierala } else { 6852124e3b0SAlexander Motin if (ISCSI_SNGT(maxcmdsn, is->is_maxcmdsn)) { 686009ea47eSEdward Tomasz Napierala is->is_maxcmdsn = maxcmdsn; 687009ea47eSEdward Tomasz Napierala 688009ea47eSEdward Tomasz Napierala /* 689009ea47eSEdward Tomasz Napierala * Command window increased; kick the maintanance thread 690009ea47eSEdward Tomasz Napierala * to send out postponed commands. 691009ea47eSEdward Tomasz Napierala */ 69216c158a5SEdward Tomasz Napierala if (!STAILQ_EMPTY(&is->is_postponed)) 693009ea47eSEdward Tomasz Napierala cv_signal(&is->is_maintenance_cv); 6942124e3b0SAlexander Motin } else if (ISCSI_SNLT(maxcmdsn, is->is_maxcmdsn)) { 6952124e3b0SAlexander Motin /* XXX: This is normal situation for MCS */ 6962124e3b0SAlexander Motin ISCSI_SESSION_DEBUG(is, 6972124e3b0SAlexander Motin "PDU MaxCmdSN %u < session MaxCmdSN %u; ignoring", 698009ea47eSEdward Tomasz Napierala maxcmdsn, is->is_maxcmdsn); 699009ea47eSEdward Tomasz Napierala } 700009ea47eSEdward Tomasz Napierala 7012124e3b0SAlexander Motin if (ISCSI_SNGT(expcmdsn, is->is_expcmdsn)) { 702009ea47eSEdward Tomasz Napierala is->is_expcmdsn = expcmdsn; 7032124e3b0SAlexander Motin } else if (ISCSI_SNLT(expcmdsn, is->is_expcmdsn)) { 7042124e3b0SAlexander Motin /* XXX: This is normal situation for MCS */ 7052124e3b0SAlexander Motin ISCSI_SESSION_DEBUG(is, 7062124e3b0SAlexander Motin "PDU ExpCmdSN %u < session ExpCmdSN %u; ignoring", 707009ea47eSEdward Tomasz Napierala expcmdsn, is->is_expcmdsn); 708009ea47eSEdward Tomasz Napierala } 709009ea47eSEdward Tomasz Napierala } 710009ea47eSEdward Tomasz Napierala 711009ea47eSEdward Tomasz Napierala /* 712009ea47eSEdward Tomasz Napierala * Every incoming PDU - not just NOP-In - resets the ping timer. 713009ea47eSEdward Tomasz Napierala * The purpose of the timeout is to reset the connection when it stalls; 714009ea47eSEdward Tomasz Napierala * we don't want this to happen when NOP-In or NOP-Out ends up delayed 715009ea47eSEdward Tomasz Napierala * in some queue. 716009ea47eSEdward Tomasz Napierala */ 717009ea47eSEdward Tomasz Napierala is->is_timeout = 0; 718009ea47eSEdward Tomasz Napierala } 719009ea47eSEdward Tomasz Napierala 720009ea47eSEdward Tomasz Napierala static void 721009ea47eSEdward Tomasz Napierala iscsi_receive_callback(struct icl_pdu *response) 722009ea47eSEdward Tomasz Napierala { 723009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 724009ea47eSEdward Tomasz Napierala 725009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 726009ea47eSEdward Tomasz Napierala 727009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 728009ea47eSEdward Tomasz Napierala 729d66a906bSEdward Tomasz Napierala iscsi_pdu_update_statsn(response); 730d66a906bSEdward Tomasz Napierala 731009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 732009ea47eSEdward Tomasz Napierala if (is->is_login_phase) { 733009ea47eSEdward Tomasz Napierala if (is->is_login_pdu == NULL) 734009ea47eSEdward Tomasz Napierala is->is_login_pdu = response; 735009ea47eSEdward Tomasz Napierala else 736009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 737009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 738009ea47eSEdward Tomasz Napierala cv_signal(&is->is_login_cv); 739009ea47eSEdward Tomasz Napierala return; 740009ea47eSEdward Tomasz Napierala } 741009ea47eSEdward Tomasz Napierala #endif 742009ea47eSEdward Tomasz Napierala 743009ea47eSEdward Tomasz Napierala /* 744009ea47eSEdward Tomasz Napierala * The handling routine is responsible for freeing the PDU 745009ea47eSEdward Tomasz Napierala * when it's no longer needed. 746009ea47eSEdward Tomasz Napierala */ 747009ea47eSEdward Tomasz Napierala switch (response->ip_bhs->bhs_opcode) { 748009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_NOP_IN: 749009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_nop_in(response); 750c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 751009ea47eSEdward Tomasz Napierala break; 752009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_SCSI_RESPONSE: 753009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_scsi_response(response); 754c215ad3aSAlexander Motin /* Session lock dropped inside. */ 755c215ad3aSAlexander Motin ISCSI_SESSION_LOCK_ASSERT_NOT(is); 756009ea47eSEdward Tomasz Napierala break; 757aa75114cSAlexander Motin case ISCSI_BHS_OPCODE_TASK_RESPONSE: 758aa75114cSAlexander Motin iscsi_pdu_handle_task_response(response); 759c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 760aa75114cSAlexander Motin break; 761009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_SCSI_DATA_IN: 762009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_data_in(response); 763c215ad3aSAlexander Motin /* Session lock dropped inside. */ 764c215ad3aSAlexander Motin ISCSI_SESSION_LOCK_ASSERT_NOT(is); 765009ea47eSEdward Tomasz Napierala break; 766009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_LOGOUT_RESPONSE: 767009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_logout_response(response); 768c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 769009ea47eSEdward Tomasz Napierala break; 770009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_R2T: 771009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_r2t(response); 772c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 773009ea47eSEdward Tomasz Napierala break; 774009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_ASYNC_MESSAGE: 775009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_async_message(response); 776c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 777009ea47eSEdward Tomasz Napierala break; 778009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_REJECT: 779009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_reject(response); 780c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 781009ea47eSEdward Tomasz Napierala break; 782009ea47eSEdward Tomasz Napierala default: 783009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "received PDU with unsupported " 784009ea47eSEdward Tomasz Napierala "opcode 0x%x; reconnecting", 785009ea47eSEdward Tomasz Napierala response->ip_bhs->bhs_opcode); 786009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 787c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 788009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 789009ea47eSEdward Tomasz Napierala } 790009ea47eSEdward Tomasz Napierala } 791009ea47eSEdward Tomasz Napierala 792009ea47eSEdward Tomasz Napierala static void 793009ea47eSEdward Tomasz Napierala iscsi_error_callback(struct icl_conn *ic) 794009ea47eSEdward Tomasz Napierala { 795009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 796009ea47eSEdward Tomasz Napierala 797009ea47eSEdward Tomasz Napierala is = CONN_SESSION(ic); 798009ea47eSEdward Tomasz Napierala 799009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "connection error; reconnecting"); 800009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 801009ea47eSEdward Tomasz Napierala } 802009ea47eSEdward Tomasz Napierala 803009ea47eSEdward Tomasz Napierala static void 804009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_nop_in(struct icl_pdu *response) 805009ea47eSEdward Tomasz Napierala { 8061008ac5eSEdward Tomasz Napierala struct iscsi_session *is; 807009ea47eSEdward Tomasz Napierala struct iscsi_bhs_nop_out *bhsno; 808009ea47eSEdward Tomasz Napierala struct iscsi_bhs_nop_in *bhsni; 809009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 8101008ac5eSEdward Tomasz Napierala void *data = NULL; 8111008ac5eSEdward Tomasz Napierala size_t datasize; 8121008ac5eSEdward Tomasz Napierala int error; 813009ea47eSEdward Tomasz Napierala 8141008ac5eSEdward Tomasz Napierala is = PDU_SESSION(response); 815009ea47eSEdward Tomasz Napierala bhsni = (struct iscsi_bhs_nop_in *)response->ip_bhs; 816009ea47eSEdward Tomasz Napierala 817009ea47eSEdward Tomasz Napierala if (bhsni->bhsni_target_transfer_tag == 0xffffffff) { 818009ea47eSEdward Tomasz Napierala /* 819009ea47eSEdward Tomasz Napierala * Nothing to do; iscsi_pdu_update_statsn() already 820009ea47eSEdward Tomasz Napierala * zeroed the timeout. 821009ea47eSEdward Tomasz Napierala */ 822009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 823009ea47eSEdward Tomasz Napierala return; 824009ea47eSEdward Tomasz Napierala } 825009ea47eSEdward Tomasz Napierala 8261008ac5eSEdward Tomasz Napierala datasize = icl_pdu_data_segment_length(response); 8271008ac5eSEdward Tomasz Napierala if (datasize > 0) { 8281008ac5eSEdward Tomasz Napierala data = malloc(datasize, M_ISCSI, M_NOWAIT | M_ZERO); 8291008ac5eSEdward Tomasz Napierala if (data == NULL) { 8301008ac5eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate memory; " 8311008ac5eSEdward Tomasz Napierala "reconnecting"); 8321008ac5eSEdward Tomasz Napierala icl_pdu_free(response); 8331008ac5eSEdward Tomasz Napierala iscsi_session_reconnect(is); 8341008ac5eSEdward Tomasz Napierala return; 8351008ac5eSEdward Tomasz Napierala } 8361008ac5eSEdward Tomasz Napierala icl_pdu_get_data(response, 0, data, datasize); 8371008ac5eSEdward Tomasz Napierala } 8381008ac5eSEdward Tomasz Napierala 839d2d52b00SEdward Tomasz Napierala request = icl_pdu_new(response->ip_conn, M_NOWAIT); 840009ea47eSEdward Tomasz Napierala if (request == NULL) { 8411008ac5eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate memory; " 8421008ac5eSEdward Tomasz Napierala "reconnecting"); 8431008ac5eSEdward Tomasz Napierala free(data, M_ISCSI); 844009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 8451008ac5eSEdward Tomasz Napierala iscsi_session_reconnect(is); 846009ea47eSEdward Tomasz Napierala return; 847009ea47eSEdward Tomasz Napierala } 848009ea47eSEdward Tomasz Napierala bhsno = (struct iscsi_bhs_nop_out *)request->ip_bhs; 849009ea47eSEdward Tomasz Napierala bhsno->bhsno_opcode = ISCSI_BHS_OPCODE_NOP_OUT | 850009ea47eSEdward Tomasz Napierala ISCSI_BHS_OPCODE_IMMEDIATE; 851009ea47eSEdward Tomasz Napierala bhsno->bhsno_flags = 0x80; 8521008ac5eSEdward Tomasz Napierala bhsno->bhsno_initiator_task_tag = 0xffffffff; 853009ea47eSEdward Tomasz Napierala bhsno->bhsno_target_transfer_tag = bhsni->bhsni_target_transfer_tag; 8541008ac5eSEdward Tomasz Napierala if (datasize > 0) { 8551008ac5eSEdward Tomasz Napierala error = icl_pdu_append_data(request, data, datasize, M_NOWAIT); 8561008ac5eSEdward Tomasz Napierala if (error != 0) { 8571008ac5eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate memory; " 8581008ac5eSEdward Tomasz Napierala "reconnecting"); 8591008ac5eSEdward Tomasz Napierala free(data, M_ISCSI); 8601008ac5eSEdward Tomasz Napierala icl_pdu_free(request); 8611008ac5eSEdward Tomasz Napierala icl_pdu_free(response); 8621008ac5eSEdward Tomasz Napierala iscsi_session_reconnect(is); 8631008ac5eSEdward Tomasz Napierala return; 8641008ac5eSEdward Tomasz Napierala } 8651008ac5eSEdward Tomasz Napierala free(data, M_ISCSI); 8661008ac5eSEdward Tomasz Napierala } 867009ea47eSEdward Tomasz Napierala 868009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 869009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(request); 870009ea47eSEdward Tomasz Napierala } 871009ea47eSEdward Tomasz Napierala 872009ea47eSEdward Tomasz Napierala static void 873009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_scsi_response(struct icl_pdu *response) 874009ea47eSEdward Tomasz Napierala { 875009ea47eSEdward Tomasz Napierala struct iscsi_bhs_scsi_response *bhssr; 876009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io; 877009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 87873e2e95dSAlexander Motin union ccb *ccb; 879009ea47eSEdward Tomasz Napierala struct ccb_scsiio *csio; 88073e2e95dSAlexander Motin size_t data_segment_len, received; 881009ea47eSEdward Tomasz Napierala uint16_t sense_len; 882bcec64bcSEdward Tomasz Napierala uint32_t resid; 883009ea47eSEdward Tomasz Napierala 884009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 885009ea47eSEdward Tomasz Napierala 886009ea47eSEdward Tomasz Napierala bhssr = (struct iscsi_bhs_scsi_response *)response->ip_bhs; 887009ea47eSEdward Tomasz Napierala io = iscsi_outstanding_find(is, bhssr->bhssr_initiator_task_tag); 888aa75114cSAlexander Motin if (io == NULL || io->io_ccb == NULL) { 889009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "bad itt 0x%x", bhssr->bhssr_initiator_task_tag); 890009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 891009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 892c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 893009ea47eSEdward Tomasz Napierala return; 894009ea47eSEdward Tomasz Napierala } 895009ea47eSEdward Tomasz Napierala 89673e2e95dSAlexander Motin ccb = io->io_ccb; 897bcec64bcSEdward Tomasz Napierala 898bcec64bcSEdward Tomasz Napierala /* 899bcec64bcSEdward Tomasz Napierala * With iSER, after getting good response we can be sure 900bcec64bcSEdward Tomasz Napierala * that all the data has been successfully transferred. 901bcec64bcSEdward Tomasz Napierala */ 902bcec64bcSEdward Tomasz Napierala if (is->is_conn->ic_iser) { 903bcec64bcSEdward Tomasz Napierala resid = ntohl(bhssr->bhssr_residual_count); 904bcec64bcSEdward Tomasz Napierala if (bhssr->bhssr_flags & BHSSR_FLAGS_RESIDUAL_UNDERFLOW) { 905bcec64bcSEdward Tomasz Napierala io->io_received = ccb->csio.dxfer_len - resid; 906bcec64bcSEdward Tomasz Napierala } else if (bhssr->bhssr_flags & BHSSR_FLAGS_RESIDUAL_OVERFLOW) { 907bcec64bcSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "overflow: target indicates %d", resid); 908bcec64bcSEdward Tomasz Napierala } else { 909bcec64bcSEdward Tomasz Napierala io->io_received = ccb->csio.dxfer_len; 910bcec64bcSEdward Tomasz Napierala } 911bcec64bcSEdward Tomasz Napierala } 912bcec64bcSEdward Tomasz Napierala 91373e2e95dSAlexander Motin received = io->io_received; 914c215ad3aSAlexander Motin iscsi_outstanding_remove(is, io); 915c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 916c215ad3aSAlexander Motin 917009ea47eSEdward Tomasz Napierala if (bhssr->bhssr_response != BHSSR_RESPONSE_COMMAND_COMPLETED) { 918009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "service response 0x%x", bhssr->bhssr_response); 91973e2e95dSAlexander Motin if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 92073e2e95dSAlexander Motin xpt_freeze_devq(ccb->ccb_h.path, 1); 921009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 922009ea47eSEdward Tomasz Napierala } 92373e2e95dSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP_ERR | CAM_DEV_QFRZN; 924009ea47eSEdward Tomasz Napierala } else if (bhssr->bhssr_status == 0) { 92573e2e95dSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP; 926009ea47eSEdward Tomasz Napierala } else { 92773e2e95dSAlexander Motin if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 92873e2e95dSAlexander Motin xpt_freeze_devq(ccb->ccb_h.path, 1); 929009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 930009ea47eSEdward Tomasz Napierala } 93173e2e95dSAlexander Motin ccb->ccb_h.status = CAM_SCSI_STATUS_ERROR | CAM_DEV_QFRZN; 93273e2e95dSAlexander Motin ccb->csio.scsi_status = bhssr->bhssr_status; 933009ea47eSEdward Tomasz Napierala } 934009ea47eSEdward Tomasz Napierala 93573e2e95dSAlexander Motin csio = &ccb->csio; 936009ea47eSEdward Tomasz Napierala data_segment_len = icl_pdu_data_segment_length(response); 937009ea47eSEdward Tomasz Napierala if (data_segment_len > 0) { 938009ea47eSEdward Tomasz Napierala if (data_segment_len < sizeof(sense_len)) { 939009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "truncated data segment (%zd bytes)", 940009ea47eSEdward Tomasz Napierala data_segment_len); 94173e2e95dSAlexander Motin if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 94273e2e95dSAlexander Motin xpt_freeze_devq(ccb->ccb_h.path, 1); 943009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 944009ea47eSEdward Tomasz Napierala } 94573e2e95dSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP_ERR | CAM_DEV_QFRZN; 946009ea47eSEdward Tomasz Napierala goto out; 947009ea47eSEdward Tomasz Napierala } 948009ea47eSEdward Tomasz Napierala icl_pdu_get_data(response, 0, &sense_len, sizeof(sense_len)); 949009ea47eSEdward Tomasz Napierala sense_len = ntohs(sense_len); 950009ea47eSEdward Tomasz Napierala #if 0 951009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "sense_len %d, data len %zd", 952009ea47eSEdward Tomasz Napierala sense_len, data_segment_len); 953009ea47eSEdward Tomasz Napierala #endif 954009ea47eSEdward Tomasz Napierala if (sizeof(sense_len) + sense_len > data_segment_len) { 955009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "truncated data segment " 956009ea47eSEdward Tomasz Napierala "(%zd bytes, should be %zd)", 957009ea47eSEdward Tomasz Napierala data_segment_len, sizeof(sense_len) + sense_len); 95873e2e95dSAlexander Motin if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 95973e2e95dSAlexander Motin xpt_freeze_devq(ccb->ccb_h.path, 1); 960009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 961009ea47eSEdward Tomasz Napierala } 96273e2e95dSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP_ERR | CAM_DEV_QFRZN; 963009ea47eSEdward Tomasz Napierala goto out; 964009ea47eSEdward Tomasz Napierala } else if (sizeof(sense_len) + sense_len < data_segment_len) 965009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "oversize data segment " 966009ea47eSEdward Tomasz Napierala "(%zd bytes, should be %zd)", 967009ea47eSEdward Tomasz Napierala data_segment_len, sizeof(sense_len) + sense_len); 968009ea47eSEdward Tomasz Napierala if (sense_len > csio->sense_len) { 969009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "truncating sense from %d to %d", 970009ea47eSEdward Tomasz Napierala sense_len, csio->sense_len); 971009ea47eSEdward Tomasz Napierala sense_len = csio->sense_len; 972009ea47eSEdward Tomasz Napierala } 973009ea47eSEdward Tomasz Napierala icl_pdu_get_data(response, sizeof(sense_len), &csio->sense_data, sense_len); 974009ea47eSEdward Tomasz Napierala csio->sense_resid = csio->sense_len - sense_len; 97573e2e95dSAlexander Motin ccb->ccb_h.status |= CAM_AUTOSNS_VALID; 976009ea47eSEdward Tomasz Napierala } 977009ea47eSEdward Tomasz Napierala 978009ea47eSEdward Tomasz Napierala out: 979009ea47eSEdward Tomasz Napierala if (bhssr->bhssr_flags & BHSSR_FLAGS_RESIDUAL_UNDERFLOW) 980009ea47eSEdward Tomasz Napierala csio->resid = ntohl(bhssr->bhssr_residual_count); 981009ea47eSEdward Tomasz Napierala 982009ea47eSEdward Tomasz Napierala if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) { 98373e2e95dSAlexander Motin KASSERT(received <= csio->dxfer_len, 98473e2e95dSAlexander Motin ("received > csio->dxfer_len")); 98573e2e95dSAlexander Motin if (received < csio->dxfer_len) { 98673e2e95dSAlexander Motin if (csio->resid != csio->dxfer_len - received) { 987009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "underflow mismatch: " 988009ea47eSEdward Tomasz Napierala "target indicates %d, we calculated %zd", 98973e2e95dSAlexander Motin csio->resid, csio->dxfer_len - received); 990009ea47eSEdward Tomasz Napierala } 99173e2e95dSAlexander Motin csio->resid = csio->dxfer_len - received; 992009ea47eSEdward Tomasz Napierala } 993009ea47eSEdward Tomasz Napierala } 994009ea47eSEdward Tomasz Napierala 99573e2e95dSAlexander Motin xpt_done(ccb); 996009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 997009ea47eSEdward Tomasz Napierala } 998009ea47eSEdward Tomasz Napierala 999009ea47eSEdward Tomasz Napierala static void 1000aa75114cSAlexander Motin iscsi_pdu_handle_task_response(struct icl_pdu *response) 1001aa75114cSAlexander Motin { 1002aa75114cSAlexander Motin struct iscsi_bhs_task_management_response *bhstmr; 1003aa75114cSAlexander Motin struct iscsi_outstanding *io, *aio; 1004aa75114cSAlexander Motin struct iscsi_session *is; 1005aa75114cSAlexander Motin 1006aa75114cSAlexander Motin is = PDU_SESSION(response); 1007aa75114cSAlexander Motin 1008aa75114cSAlexander Motin bhstmr = (struct iscsi_bhs_task_management_response *)response->ip_bhs; 1009aa75114cSAlexander Motin io = iscsi_outstanding_find(is, bhstmr->bhstmr_initiator_task_tag); 1010aa75114cSAlexander Motin if (io == NULL || io->io_ccb != NULL) { 1011aa75114cSAlexander Motin ISCSI_SESSION_WARN(is, "bad itt 0x%x", 1012aa75114cSAlexander Motin bhstmr->bhstmr_initiator_task_tag); 1013aa75114cSAlexander Motin icl_pdu_free(response); 1014aa75114cSAlexander Motin iscsi_session_reconnect(is); 1015aa75114cSAlexander Motin return; 1016aa75114cSAlexander Motin } 1017aa75114cSAlexander Motin 1018aa75114cSAlexander Motin if (bhstmr->bhstmr_response != BHSTMR_RESPONSE_FUNCTION_COMPLETE) { 1019aa75114cSAlexander Motin ISCSI_SESSION_WARN(is, "task response 0x%x", 1020aa75114cSAlexander Motin bhstmr->bhstmr_response); 1021aa75114cSAlexander Motin } else { 1022aa75114cSAlexander Motin aio = iscsi_outstanding_find(is, io->io_datasn); 1023aa75114cSAlexander Motin if (aio != NULL && aio->io_ccb != NULL) 1024aa75114cSAlexander Motin iscsi_session_terminate_task(is, aio, false); 1025aa75114cSAlexander Motin } 1026aa75114cSAlexander Motin 1027aa75114cSAlexander Motin iscsi_outstanding_remove(is, io); 1028aa75114cSAlexander Motin icl_pdu_free(response); 1029aa75114cSAlexander Motin } 1030aa75114cSAlexander Motin 1031aa75114cSAlexander Motin static void 1032009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_data_in(struct icl_pdu *response) 1033009ea47eSEdward Tomasz Napierala { 1034009ea47eSEdward Tomasz Napierala struct iscsi_bhs_data_in *bhsdi; 1035009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io; 1036009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 103773e2e95dSAlexander Motin union ccb *ccb; 1038009ea47eSEdward Tomasz Napierala struct ccb_scsiio *csio; 103973e2e95dSAlexander Motin size_t data_segment_len, received, oreceived; 1040009ea47eSEdward Tomasz Napierala 1041009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 1042009ea47eSEdward Tomasz Napierala bhsdi = (struct iscsi_bhs_data_in *)response->ip_bhs; 1043009ea47eSEdward Tomasz Napierala io = iscsi_outstanding_find(is, bhsdi->bhsdi_initiator_task_tag); 1044aa75114cSAlexander Motin if (io == NULL || io->io_ccb == NULL) { 1045009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "bad itt 0x%x", bhsdi->bhsdi_initiator_task_tag); 1046009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1047009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1048c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 1049009ea47eSEdward Tomasz Napierala return; 1050009ea47eSEdward Tomasz Napierala } 1051009ea47eSEdward Tomasz Napierala 1052009ea47eSEdward Tomasz Napierala data_segment_len = icl_pdu_data_segment_length(response); 1053009ea47eSEdward Tomasz Napierala if (data_segment_len == 0) { 1054009ea47eSEdward Tomasz Napierala /* 1055009ea47eSEdward Tomasz Napierala * "The sending of 0 length data segments should be avoided, 1056009ea47eSEdward Tomasz Napierala * but initiators and targets MUST be able to properly receive 1057009ea47eSEdward Tomasz Napierala * 0 length data segments." 1058009ea47eSEdward Tomasz Napierala */ 1059c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 1060009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1061009ea47eSEdward Tomasz Napierala return; 1062009ea47eSEdward Tomasz Napierala } 1063009ea47eSEdward Tomasz Napierala 1064009ea47eSEdward Tomasz Napierala /* 1065009ea47eSEdward Tomasz Napierala * We need to track this for security reasons - without it, malicious target 1066009ea47eSEdward Tomasz Napierala * could respond to SCSI READ without sending Data-In PDUs, which would result 1067009ea47eSEdward Tomasz Napierala * in read operation on the initiator side returning random kernel data. 1068009ea47eSEdward Tomasz Napierala */ 1069009ea47eSEdward Tomasz Napierala if (ntohl(bhsdi->bhsdi_buffer_offset) != io->io_received) { 1070009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "data out of order; expected offset %zd, got %zd", 1071009ea47eSEdward Tomasz Napierala io->io_received, (size_t)ntohl(bhsdi->bhsdi_buffer_offset)); 1072009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1073009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1074c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 1075009ea47eSEdward Tomasz Napierala return; 1076009ea47eSEdward Tomasz Napierala } 1077009ea47eSEdward Tomasz Napierala 107873e2e95dSAlexander Motin ccb = io->io_ccb; 107973e2e95dSAlexander Motin csio = &ccb->csio; 1080009ea47eSEdward Tomasz Napierala 1081d43c9ec1SEdward Tomasz Napierala if (io->io_received + data_segment_len > csio->dxfer_len) { 1082009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "oversize data segment (%zd bytes " 1083d43c9ec1SEdward Tomasz Napierala "at offset %zd, buffer is %d)", 1084d43c9ec1SEdward Tomasz Napierala data_segment_len, io->io_received, csio->dxfer_len); 1085009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1086009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1087c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 1088009ea47eSEdward Tomasz Napierala return; 1089009ea47eSEdward Tomasz Napierala } 1090009ea47eSEdward Tomasz Napierala 109173e2e95dSAlexander Motin oreceived = io->io_received; 1092009ea47eSEdward Tomasz Napierala io->io_received += data_segment_len; 109373e2e95dSAlexander Motin received = io->io_received; 1094c215ad3aSAlexander Motin if ((bhsdi->bhsdi_flags & BHSDI_FLAGS_S) != 0) 1095c215ad3aSAlexander Motin iscsi_outstanding_remove(is, io); 1096c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 1097c215ad3aSAlexander Motin 109873e2e95dSAlexander Motin icl_pdu_get_data(response, 0, csio->data_ptr + oreceived, data_segment_len); 1099009ea47eSEdward Tomasz Napierala 1100009ea47eSEdward Tomasz Napierala /* 1101009ea47eSEdward Tomasz Napierala * XXX: Check DataSN. 1102009ea47eSEdward Tomasz Napierala * XXX: Check F. 1103009ea47eSEdward Tomasz Napierala */ 110469647b7bSEdward Tomasz Napierala if ((bhsdi->bhsdi_flags & BHSDI_FLAGS_S) == 0) { 110569647b7bSEdward Tomasz Napierala /* 110669647b7bSEdward Tomasz Napierala * Nothing more to do. 110769647b7bSEdward Tomasz Napierala */ 110869647b7bSEdward Tomasz Napierala icl_pdu_free(response); 110969647b7bSEdward Tomasz Napierala return; 111069647b7bSEdward Tomasz Napierala } 111169647b7bSEdward Tomasz Napierala 1112009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "got S flag; status 0x%x", bhsdi->bhsdi_status); 1113009ea47eSEdward Tomasz Napierala if (bhsdi->bhsdi_status == 0) { 111473e2e95dSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP; 1115009ea47eSEdward Tomasz Napierala } else { 111673e2e95dSAlexander Motin if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 111773e2e95dSAlexander Motin xpt_freeze_devq(ccb->ccb_h.path, 1); 1118009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 1119009ea47eSEdward Tomasz Napierala } 112073e2e95dSAlexander Motin ccb->ccb_h.status = CAM_SCSI_STATUS_ERROR | CAM_DEV_QFRZN; 1121009ea47eSEdward Tomasz Napierala csio->scsi_status = bhsdi->bhsdi_status; 1122009ea47eSEdward Tomasz Napierala } 112369647b7bSEdward Tomasz Napierala 112469647b7bSEdward Tomasz Napierala if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) { 112573e2e95dSAlexander Motin KASSERT(received <= csio->dxfer_len, 112673e2e95dSAlexander Motin ("received > csio->dxfer_len")); 112773e2e95dSAlexander Motin if (received < csio->dxfer_len) { 112869647b7bSEdward Tomasz Napierala csio->resid = ntohl(bhsdi->bhsdi_residual_count); 112973e2e95dSAlexander Motin if (csio->resid != csio->dxfer_len - received) { 113069647b7bSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "underflow mismatch: " 113169647b7bSEdward Tomasz Napierala "target indicates %d, we calculated %zd", 113273e2e95dSAlexander Motin csio->resid, csio->dxfer_len - received); 113369647b7bSEdward Tomasz Napierala } 113473e2e95dSAlexander Motin csio->resid = csio->dxfer_len - received; 113569647b7bSEdward Tomasz Napierala } 1136009ea47eSEdward Tomasz Napierala } 1137009ea47eSEdward Tomasz Napierala 113873e2e95dSAlexander Motin xpt_done(ccb); 1139009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1140009ea47eSEdward Tomasz Napierala } 1141009ea47eSEdward Tomasz Napierala 1142009ea47eSEdward Tomasz Napierala static void 1143009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_logout_response(struct icl_pdu *response) 1144009ea47eSEdward Tomasz Napierala { 1145009ea47eSEdward Tomasz Napierala 1146009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(PDU_SESSION(response), "logout response"); 1147009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1148009ea47eSEdward Tomasz Napierala } 1149009ea47eSEdward Tomasz Napierala 1150009ea47eSEdward Tomasz Napierala static void 1151009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_r2t(struct icl_pdu *response) 1152009ea47eSEdward Tomasz Napierala { 1153009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 1154009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1155009ea47eSEdward Tomasz Napierala struct iscsi_bhs_r2t *bhsr2t; 1156009ea47eSEdward Tomasz Napierala struct iscsi_bhs_data_out *bhsdo; 1157009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io; 1158009ea47eSEdward Tomasz Napierala struct ccb_scsiio *csio; 1159009ea47eSEdward Tomasz Napierala size_t off, len, total_len; 1160009ea47eSEdward Tomasz Napierala int error; 1161009ea47eSEdward Tomasz Napierala 1162009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 1163009ea47eSEdward Tomasz Napierala 1164009ea47eSEdward Tomasz Napierala bhsr2t = (struct iscsi_bhs_r2t *)response->ip_bhs; 1165009ea47eSEdward Tomasz Napierala io = iscsi_outstanding_find(is, bhsr2t->bhsr2t_initiator_task_tag); 1166aa75114cSAlexander Motin if (io == NULL || io->io_ccb == NULL) { 1167009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "bad itt 0x%x; reconnecting", 1168009ea47eSEdward Tomasz Napierala bhsr2t->bhsr2t_initiator_task_tag); 1169009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1170009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1171009ea47eSEdward Tomasz Napierala return; 1172009ea47eSEdward Tomasz Napierala } 1173009ea47eSEdward Tomasz Napierala 1174009ea47eSEdward Tomasz Napierala csio = &io->io_ccb->csio; 1175009ea47eSEdward Tomasz Napierala 1176009ea47eSEdward Tomasz Napierala if ((csio->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_OUT) { 1177009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "received R2T for read command; reconnecting"); 1178009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1179009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1180009ea47eSEdward Tomasz Napierala return; 1181009ea47eSEdward Tomasz Napierala } 1182009ea47eSEdward Tomasz Napierala 1183009ea47eSEdward Tomasz Napierala /* 1184009ea47eSEdward Tomasz Napierala * XXX: Verify R2TSN. 1185009ea47eSEdward Tomasz Napierala */ 1186009ea47eSEdward Tomasz Napierala 1187009ea47eSEdward Tomasz Napierala io->io_datasn = 0; 1188d43c9ec1SEdward Tomasz Napierala 1189009ea47eSEdward Tomasz Napierala off = ntohl(bhsr2t->bhsr2t_buffer_offset); 1190d43c9ec1SEdward Tomasz Napierala if (off > csio->dxfer_len) { 1191d43c9ec1SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target requested invalid offset " 1192d43c9ec1SEdward Tomasz Napierala "%zd, buffer is is %d; reconnecting", off, csio->dxfer_len); 1193d43c9ec1SEdward Tomasz Napierala icl_pdu_free(response); 1194d43c9ec1SEdward Tomasz Napierala iscsi_session_reconnect(is); 1195d43c9ec1SEdward Tomasz Napierala return; 1196d43c9ec1SEdward Tomasz Napierala } 1197d43c9ec1SEdward Tomasz Napierala 1198009ea47eSEdward Tomasz Napierala total_len = ntohl(bhsr2t->bhsr2t_desired_data_transfer_length); 1199d43c9ec1SEdward Tomasz Napierala if (total_len == 0 || total_len > csio->dxfer_len) { 1200d43c9ec1SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target requested invalid length " 1201d43c9ec1SEdward Tomasz Napierala "%zd, buffer is %d; reconnecting", total_len, csio->dxfer_len); 1202d43c9ec1SEdward Tomasz Napierala icl_pdu_free(response); 1203d43c9ec1SEdward Tomasz Napierala iscsi_session_reconnect(is); 1204d43c9ec1SEdward Tomasz Napierala return; 1205d43c9ec1SEdward Tomasz Napierala } 1206009ea47eSEdward Tomasz Napierala 1207009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "r2t; off %zd, len %zd", off, total_len); 1208009ea47eSEdward Tomasz Napierala 1209009ea47eSEdward Tomasz Napierala for (;;) { 1210009ea47eSEdward Tomasz Napierala len = total_len; 1211009ea47eSEdward Tomasz Napierala 121297b84d34SNavdeep Parhar if (len > is->is_max_send_data_segment_length) 121397b84d34SNavdeep Parhar len = is->is_max_send_data_segment_length; 1214009ea47eSEdward Tomasz Napierala 1215009ea47eSEdward Tomasz Napierala if (off + len > csio->dxfer_len) { 1216d43c9ec1SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target requested invalid " 1217d43c9ec1SEdward Tomasz Napierala "length/offset %zd, buffer is %d; reconnecting", 1218009ea47eSEdward Tomasz Napierala off + len, csio->dxfer_len); 1219009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1220009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1221009ea47eSEdward Tomasz Napierala return; 1222009ea47eSEdward Tomasz Napierala } 1223009ea47eSEdward Tomasz Napierala 1224d2d52b00SEdward Tomasz Napierala request = icl_pdu_new(response->ip_conn, M_NOWAIT); 1225009ea47eSEdward Tomasz Napierala if (request == NULL) { 1226009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1227009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1228009ea47eSEdward Tomasz Napierala return; 1229009ea47eSEdward Tomasz Napierala } 1230009ea47eSEdward Tomasz Napierala 1231009ea47eSEdward Tomasz Napierala bhsdo = (struct iscsi_bhs_data_out *)request->ip_bhs; 1232009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_opcode = ISCSI_BHS_OPCODE_SCSI_DATA_OUT; 1233009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_lun = bhsr2t->bhsr2t_lun; 1234009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_initiator_task_tag = 1235009ea47eSEdward Tomasz Napierala bhsr2t->bhsr2t_initiator_task_tag; 1236009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_target_transfer_tag = 1237009ea47eSEdward Tomasz Napierala bhsr2t->bhsr2t_target_transfer_tag; 1238009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_datasn = htonl(io->io_datasn++); 1239009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_buffer_offset = htonl(off); 1240d43c9ec1SEdward Tomasz Napierala error = icl_pdu_append_data(request, csio->data_ptr + off, len, 1241d43c9ec1SEdward Tomasz Napierala M_NOWAIT); 1242009ea47eSEdward Tomasz Napierala if (error != 0) { 1243d43c9ec1SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate memory; " 1244d43c9ec1SEdward Tomasz Napierala "reconnecting"); 1245009ea47eSEdward Tomasz Napierala icl_pdu_free(request); 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 off += len; 1252009ea47eSEdward Tomasz Napierala total_len -= len; 1253009ea47eSEdward Tomasz Napierala 1254009ea47eSEdward Tomasz Napierala if (total_len == 0) { 1255009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_flags |= BHSDO_FLAGS_F; 1256009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "setting F, off %zd", off); 1257009ea47eSEdward Tomasz Napierala } else { 1258009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "not finished, off %zd", off); 1259009ea47eSEdward Tomasz Napierala } 1260009ea47eSEdward Tomasz Napierala 1261009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(request); 1262009ea47eSEdward Tomasz Napierala 1263009ea47eSEdward Tomasz Napierala if (total_len == 0) 1264009ea47eSEdward Tomasz Napierala break; 1265009ea47eSEdward Tomasz Napierala } 1266009ea47eSEdward Tomasz Napierala 1267009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1268009ea47eSEdward Tomasz Napierala } 1269009ea47eSEdward Tomasz Napierala 1270009ea47eSEdward Tomasz Napierala static void 1271009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_async_message(struct icl_pdu *response) 1272009ea47eSEdward Tomasz Napierala { 1273009ea47eSEdward Tomasz Napierala struct iscsi_bhs_asynchronous_message *bhsam; 1274009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1275009ea47eSEdward Tomasz Napierala 1276009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 1277009ea47eSEdward Tomasz Napierala bhsam = (struct iscsi_bhs_asynchronous_message *)response->ip_bhs; 1278009ea47eSEdward Tomasz Napierala switch (bhsam->bhsam_async_event) { 1279009ea47eSEdward Tomasz Napierala case BHSAM_EVENT_TARGET_REQUESTS_LOGOUT: 1280009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target requests logout; removing session"); 1281009ea47eSEdward Tomasz Napierala iscsi_session_logout(is); 1282009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1283009ea47eSEdward Tomasz Napierala break; 1284009ea47eSEdward Tomasz Napierala case BHSAM_EVENT_TARGET_TERMINATES_CONNECTION: 1285009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target indicates it will drop drop the connection"); 1286009ea47eSEdward Tomasz Napierala break; 1287009ea47eSEdward Tomasz Napierala case BHSAM_EVENT_TARGET_TERMINATES_SESSION: 1288009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target indicates it will drop drop the session"); 1289009ea47eSEdward Tomasz Napierala break; 1290009ea47eSEdward Tomasz Napierala default: 1291009ea47eSEdward Tomasz Napierala /* 1292009ea47eSEdward Tomasz Napierala * XXX: Technically, we're obligated to also handle 1293009ea47eSEdward Tomasz Napierala * parameter renegotiation. 1294009ea47eSEdward Tomasz Napierala */ 1295009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "ignoring AsyncEvent %d", bhsam->bhsam_async_event); 1296009ea47eSEdward Tomasz Napierala break; 1297009ea47eSEdward Tomasz Napierala } 1298009ea47eSEdward Tomasz Napierala 1299009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1300009ea47eSEdward Tomasz Napierala } 1301009ea47eSEdward Tomasz Napierala 1302009ea47eSEdward Tomasz Napierala static void 1303009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_reject(struct icl_pdu *response) 1304009ea47eSEdward Tomasz Napierala { 1305009ea47eSEdward Tomasz Napierala struct iscsi_bhs_reject *bhsr; 1306009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1307009ea47eSEdward Tomasz Napierala 1308009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 1309009ea47eSEdward Tomasz Napierala bhsr = (struct iscsi_bhs_reject *)response->ip_bhs; 1310009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "received Reject PDU, reason 0x%x; protocol error?", 1311009ea47eSEdward Tomasz Napierala bhsr->bhsr_reason); 1312009ea47eSEdward Tomasz Napierala 1313009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1314009ea47eSEdward Tomasz Napierala } 1315009ea47eSEdward Tomasz Napierala 1316009ea47eSEdward Tomasz Napierala static int 1317009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_wait(struct iscsi_softc *sc, 1318009ea47eSEdward Tomasz Napierala struct iscsi_daemon_request *request) 1319009ea47eSEdward Tomasz Napierala { 1320009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 132197b84d34SNavdeep Parhar struct icl_drv_limits idl; 1322009ea47eSEdward Tomasz Napierala int error; 1323009ea47eSEdward Tomasz Napierala 1324009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1325009ea47eSEdward Tomasz Napierala for (;;) { 1326009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 13272be596adSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1328ba165a31SEdward Tomasz Napierala if (is->is_conf.isc_enable == 0 && 1329ba165a31SEdward Tomasz Napierala is->is_conf.isc_discovery == 0) { 1330ba165a31SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1331ba165a31SEdward Tomasz Napierala continue; 1332ba165a31SEdward Tomasz Napierala } 1333009ea47eSEdward Tomasz Napierala if (is->is_waiting_for_iscsid) 1334009ea47eSEdward Tomasz Napierala break; 13352be596adSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1336009ea47eSEdward Tomasz Napierala } 1337009ea47eSEdward Tomasz Napierala 1338009ea47eSEdward Tomasz Napierala if (is == NULL) { 1339009ea47eSEdward Tomasz Napierala /* 1340009ea47eSEdward Tomasz Napierala * No session requires attention from iscsid(8); wait. 1341009ea47eSEdward Tomasz Napierala */ 1342009ea47eSEdward Tomasz Napierala error = cv_wait_sig(&sc->sc_cv, &sc->sc_lock); 1343009ea47eSEdward Tomasz Napierala if (error != 0) { 1344009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1345009ea47eSEdward Tomasz Napierala return (error); 1346009ea47eSEdward Tomasz Napierala } 1347009ea47eSEdward Tomasz Napierala continue; 1348009ea47eSEdward Tomasz Napierala } 1349009ea47eSEdward Tomasz Napierala 1350009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = false; 1351009ea47eSEdward Tomasz Napierala is->is_login_phase = true; 1352009ea47eSEdward Tomasz Napierala is->is_reason[0] = '\0'; 1353009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1354009ea47eSEdward Tomasz Napierala 1355009ea47eSEdward Tomasz Napierala request->idr_session_id = is->is_id; 1356ffe82e05SAlexander Motin memcpy(&request->idr_isid, &is->is_isid, 1357ffe82e05SAlexander Motin sizeof(request->idr_isid)); 1358ffe82e05SAlexander Motin request->idr_tsih = 0; /* New or reinstated session. */ 1359009ea47eSEdward Tomasz Napierala memcpy(&request->idr_conf, &is->is_conf, 1360009ea47eSEdward Tomasz Napierala sizeof(request->idr_conf)); 1361009ea47eSEdward Tomasz Napierala 136282babffbSEdward Tomasz Napierala error = icl_limits(is->is_conf.isc_offload, 136397b84d34SNavdeep Parhar is->is_conf.isc_iser, &idl); 136482babffbSEdward Tomasz Napierala if (error != 0) { 136582babffbSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "icl_limits for offload \"%s\" " 136682babffbSEdward Tomasz Napierala "failed with error %d", is->is_conf.isc_offload, 136782babffbSEdward Tomasz Napierala error); 136882babffbSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 136982babffbSEdward Tomasz Napierala return (error); 137082babffbSEdward Tomasz Napierala } 137197b84d34SNavdeep Parhar request->idr_limits.isl_max_recv_data_segment_length = 137297b84d34SNavdeep Parhar idl.idl_max_recv_data_segment_length; 137397b84d34SNavdeep Parhar request->idr_limits.isl_max_send_data_segment_length = 137448214203SNavdeep Parhar idl.idl_max_send_data_segment_length; 137597b84d34SNavdeep Parhar request->idr_limits.isl_max_burst_length = 137697b84d34SNavdeep Parhar idl.idl_max_burst_length; 137797b84d34SNavdeep Parhar request->idr_limits.isl_first_burst_length = 137897b84d34SNavdeep Parhar idl.idl_first_burst_length; 137982babffbSEdward Tomasz Napierala 1380009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1381009ea47eSEdward Tomasz Napierala return (0); 1382009ea47eSEdward Tomasz Napierala } 1383009ea47eSEdward Tomasz Napierala } 1384009ea47eSEdward Tomasz Napierala 1385009ea47eSEdward Tomasz Napierala static int 1386009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_handoff(struct iscsi_softc *sc, 1387009ea47eSEdward Tomasz Napierala struct iscsi_daemon_handoff *handoff) 1388009ea47eSEdward Tomasz Napierala { 1389009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1390f5cadbc4SNavdeep Parhar struct icl_conn *ic; 1391009ea47eSEdward Tomasz Napierala int error; 1392009ea47eSEdward Tomasz Napierala 1393009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1394009ea47eSEdward Tomasz Napierala 1395009ea47eSEdward Tomasz Napierala /* 1396009ea47eSEdward Tomasz Napierala * Find the session to hand off socket to. 1397009ea47eSEdward Tomasz Napierala */ 1398009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1399009ea47eSEdward Tomasz Napierala if (is->is_id == handoff->idh_session_id) 1400009ea47eSEdward Tomasz Napierala break; 1401009ea47eSEdward Tomasz Napierala } 1402009ea47eSEdward Tomasz Napierala if (is == NULL) { 1403009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1404009ea47eSEdward Tomasz Napierala return (ESRCH); 1405009ea47eSEdward Tomasz Napierala } 1406009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1407f5cadbc4SNavdeep Parhar ic = is->is_conn; 1408009ea47eSEdward Tomasz Napierala if (is->is_conf.isc_discovery || is->is_terminating) { 1409009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1410009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1411009ea47eSEdward Tomasz Napierala return (EINVAL); 1412009ea47eSEdward Tomasz Napierala } 14130260023fSEdward Tomasz Napierala if (is->is_connected) { 14140260023fSEdward Tomasz Napierala /* 14150260023fSEdward Tomasz Napierala * This might have happened because another iscsid(8) 14160260023fSEdward Tomasz Napierala * instance handed off the connection in the meantime. 14170260023fSEdward Tomasz Napierala * Just return. 14180260023fSEdward Tomasz Napierala */ 14190260023fSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "handoff on already connected " 14200260023fSEdward Tomasz Napierala "session"); 14210260023fSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 14220260023fSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 14230260023fSEdward Tomasz Napierala return (EBUSY); 14240260023fSEdward Tomasz Napierala } 1425009ea47eSEdward Tomasz Napierala 1426009ea47eSEdward Tomasz Napierala strlcpy(is->is_target_alias, handoff->idh_target_alias, 1427009ea47eSEdward Tomasz Napierala sizeof(is->is_target_alias)); 1428ffe82e05SAlexander Motin is->is_tsih = handoff->idh_tsih; 1429009ea47eSEdward Tomasz Napierala is->is_statsn = handoff->idh_statsn; 1430009ea47eSEdward Tomasz Napierala is->is_initial_r2t = handoff->idh_initial_r2t; 1431009ea47eSEdward Tomasz Napierala is->is_immediate_data = handoff->idh_immediate_data; 1432c8b73c2cSNavdeep Parhar 143397b84d34SNavdeep Parhar is->is_max_recv_data_segment_length = 143497b84d34SNavdeep Parhar handoff->idh_max_recv_data_segment_length; 143597b84d34SNavdeep Parhar is->is_max_send_data_segment_length = 143697b84d34SNavdeep Parhar handoff->idh_max_send_data_segment_length; 1437009ea47eSEdward Tomasz Napierala is->is_max_burst_length = handoff->idh_max_burst_length; 1438009ea47eSEdward Tomasz Napierala is->is_first_burst_length = handoff->idh_first_burst_length; 1439009ea47eSEdward Tomasz Napierala 1440009ea47eSEdward Tomasz Napierala if (handoff->idh_header_digest == ISCSI_DIGEST_CRC32C) 1441f5cadbc4SNavdeep Parhar ic->ic_header_crc32c = true; 1442009ea47eSEdward Tomasz Napierala else 1443f5cadbc4SNavdeep Parhar ic->ic_header_crc32c = false; 1444009ea47eSEdward Tomasz Napierala if (handoff->idh_data_digest == ISCSI_DIGEST_CRC32C) 1445f5cadbc4SNavdeep Parhar ic->ic_data_crc32c = true; 1446009ea47eSEdward Tomasz Napierala else 1447f5cadbc4SNavdeep Parhar ic->ic_data_crc32c = false; 1448b218ca6fSEdward Tomasz Napierala ic->ic_maxtags = maxtags; 1449009ea47eSEdward Tomasz Napierala 1450009ea47eSEdward Tomasz Napierala is->is_cmdsn = 0; 1451cf23c509SEdward Tomasz Napierala is->is_expcmdsn = 0; 1452cf23c509SEdward Tomasz Napierala is->is_maxcmdsn = 0; 1453009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = false; 1454009ea47eSEdward Tomasz Napierala is->is_login_phase = false; 1455009ea47eSEdward Tomasz Napierala is->is_timeout = 0; 1456009ea47eSEdward Tomasz Napierala is->is_connected = true; 1457009ea47eSEdward Tomasz Napierala is->is_reason[0] = '\0'; 1458009ea47eSEdward Tomasz Napierala 1459009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1460009ea47eSEdward Tomasz Napierala 146157a4f20bSEdward Tomasz Napierala /* 1462906a424bSEdward Tomasz Napierala * If we're going through the proxy, the idh_socket will be 0, 1463906a424bSEdward Tomasz Napierala * and the ICL module can simply ignore this call. It can also 1464906a424bSEdward Tomasz Napierala * use it to determine it's no longer in the Login phase. 146557a4f20bSEdward Tomasz Napierala */ 1466f5cadbc4SNavdeep Parhar error = icl_conn_handoff(ic, handoff->idh_socket); 1467009ea47eSEdward Tomasz Napierala if (error != 0) { 1468009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1469009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1470009ea47eSEdward Tomasz Napierala return (error); 1471009ea47eSEdward Tomasz Napierala } 1472009ea47eSEdward Tomasz Napierala 1473009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1474009ea47eSEdward Tomasz Napierala 1475009ea47eSEdward Tomasz Napierala if (is->is_sim != NULL) { 1476009ea47eSEdward Tomasz Napierala /* 1477009ea47eSEdward Tomasz Napierala * When reconnecting, there already is SIM allocated for the session. 1478009ea47eSEdward Tomasz Napierala */ 1479009ea47eSEdward Tomasz Napierala KASSERT(is->is_simq_frozen, ("reconnect without frozen simq")); 1480009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1481009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "releasing"); 1482009ea47eSEdward Tomasz Napierala xpt_release_simq(is->is_sim, 1); 1483009ea47eSEdward Tomasz Napierala is->is_simq_frozen = false; 1484009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1485009ea47eSEdward Tomasz Napierala 1486009ea47eSEdward Tomasz Napierala } else { 1487009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1488b218ca6fSEdward Tomasz Napierala is->is_devq = cam_simq_alloc(ic->ic_maxtags); 1489009ea47eSEdward Tomasz Napierala if (is->is_devq == NULL) { 1490009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate simq"); 1491009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1492009ea47eSEdward Tomasz Napierala return (ENOMEM); 1493009ea47eSEdward Tomasz Napierala } 1494009ea47eSEdward Tomasz Napierala 1495009ea47eSEdward Tomasz Napierala is->is_sim = cam_sim_alloc(iscsi_action, iscsi_poll, "iscsi", 1496009ea47eSEdward Tomasz Napierala is, is->is_id /* unit */, &is->is_lock, 1497b218ca6fSEdward Tomasz Napierala 1, ic->ic_maxtags, is->is_devq); 1498009ea47eSEdward Tomasz Napierala if (is->is_sim == NULL) { 1499009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1500009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate SIM"); 1501009ea47eSEdward Tomasz Napierala cam_simq_free(is->is_devq); 1502009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1503009ea47eSEdward Tomasz Napierala return (ENOMEM); 1504009ea47eSEdward Tomasz Napierala } 1505009ea47eSEdward Tomasz Napierala 1506009ea47eSEdward Tomasz Napierala error = xpt_bus_register(is->is_sim, NULL, 0); 1507009ea47eSEdward Tomasz Napierala if (error != 0) { 1508009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1509009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to register bus"); 1510009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1511009ea47eSEdward Tomasz Napierala return (ENOMEM); 1512009ea47eSEdward Tomasz Napierala } 1513009ea47eSEdward Tomasz Napierala 1514009ea47eSEdward Tomasz Napierala error = xpt_create_path(&is->is_path, /*periph*/NULL, 1515009ea47eSEdward Tomasz Napierala cam_sim_path(is->is_sim), CAM_TARGET_WILDCARD, 1516009ea47eSEdward Tomasz Napierala CAM_LUN_WILDCARD); 1517009ea47eSEdward Tomasz Napierala if (error != CAM_REQ_CMP) { 1518009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1519009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to create path"); 1520009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1521009ea47eSEdward Tomasz Napierala return (ENOMEM); 1522009ea47eSEdward Tomasz Napierala } 1523009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1524009ea47eSEdward Tomasz Napierala } 1525009ea47eSEdward Tomasz Napierala 1526009ea47eSEdward Tomasz Napierala return (0); 1527009ea47eSEdward Tomasz Napierala } 1528009ea47eSEdward Tomasz Napierala 1529009ea47eSEdward Tomasz Napierala static int 1530009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_fail(struct iscsi_softc *sc, 1531009ea47eSEdward Tomasz Napierala struct iscsi_daemon_fail *fail) 1532009ea47eSEdward Tomasz Napierala { 1533009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1534009ea47eSEdward Tomasz Napierala 1535009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1536009ea47eSEdward Tomasz Napierala 1537009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1538009ea47eSEdward Tomasz Napierala if (is->is_id == fail->idf_session_id) 1539009ea47eSEdward Tomasz Napierala break; 1540009ea47eSEdward Tomasz Napierala } 1541009ea47eSEdward Tomasz Napierala if (is == NULL) { 1542009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1543009ea47eSEdward Tomasz Napierala return (ESRCH); 1544009ea47eSEdward Tomasz Napierala } 1545009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1546009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "iscsid(8) failed: %s", 1547009ea47eSEdward Tomasz Napierala fail->idf_reason); 1548009ea47eSEdward Tomasz Napierala strlcpy(is->is_reason, fail->idf_reason, sizeof(is->is_reason)); 1549009ea47eSEdward Tomasz Napierala //is->is_waiting_for_iscsid = false; 1550009ea47eSEdward Tomasz Napierala //is->is_login_phase = true; 1551009ea47eSEdward Tomasz Napierala //iscsi_session_reconnect(is); 1552009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1553009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1554009ea47eSEdward Tomasz Napierala 1555009ea47eSEdward Tomasz Napierala return (0); 1556009ea47eSEdward Tomasz Napierala } 1557009ea47eSEdward Tomasz Napierala 1558009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 1559009ea47eSEdward Tomasz Napierala static int 1560009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_connect(struct iscsi_softc *sc, 1561009ea47eSEdward Tomasz Napierala struct iscsi_daemon_connect *idc) 1562009ea47eSEdward Tomasz Napierala { 1563009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1564009ea47eSEdward Tomasz Napierala struct sockaddr *from_sa, *to_sa; 1565009ea47eSEdward Tomasz Napierala int error; 1566009ea47eSEdward Tomasz Napierala 1567009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1568009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1569009ea47eSEdward Tomasz Napierala if (is->is_id == idc->idc_session_id) 1570009ea47eSEdward Tomasz Napierala break; 1571009ea47eSEdward Tomasz Napierala } 1572009ea47eSEdward Tomasz Napierala if (is == NULL) { 1573009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1574009ea47eSEdward Tomasz Napierala return (ESRCH); 1575009ea47eSEdward Tomasz Napierala } 1576009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1577009ea47eSEdward Tomasz Napierala 1578009ea47eSEdward Tomasz Napierala if (idc->idc_from_addrlen > 0) { 1579009ea47eSEdward Tomasz Napierala error = getsockaddr(&from_sa, (void *)idc->idc_from_addr, idc->idc_from_addrlen); 158057a4f20bSEdward Tomasz Napierala if (error != 0) { 158157a4f20bSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, 158257a4f20bSEdward Tomasz Napierala "getsockaddr failed with error %d", error); 1583009ea47eSEdward Tomasz Napierala return (error); 158457a4f20bSEdward Tomasz Napierala } 1585009ea47eSEdward Tomasz Napierala } else { 1586009ea47eSEdward Tomasz Napierala from_sa = NULL; 1587009ea47eSEdward Tomasz Napierala } 1588009ea47eSEdward Tomasz Napierala error = getsockaddr(&to_sa, (void *)idc->idc_to_addr, idc->idc_to_addrlen); 1589009ea47eSEdward Tomasz Napierala if (error != 0) { 159057a4f20bSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "getsockaddr failed with error %d", 159157a4f20bSEdward Tomasz Napierala error); 1592009ea47eSEdward Tomasz Napierala free(from_sa, M_SONAME); 1593009ea47eSEdward Tomasz Napierala return (error); 1594009ea47eSEdward Tomasz Napierala } 1595009ea47eSEdward Tomasz Napierala 1596009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1597a3fd63f2SEdward Tomasz Napierala is->is_statsn = 0; 1598a3fd63f2SEdward Tomasz Napierala is->is_cmdsn = 0; 1599a3fd63f2SEdward Tomasz Napierala is->is_expcmdsn = 0; 1600a3fd63f2SEdward Tomasz Napierala is->is_maxcmdsn = 0; 1601009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = false; 1602009ea47eSEdward Tomasz Napierala is->is_login_phase = true; 1603009ea47eSEdward Tomasz Napierala is->is_timeout = 0; 1604009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1605009ea47eSEdward Tomasz Napierala 1606f41492b0SEdward Tomasz Napierala error = icl_conn_connect(is->is_conn, idc->idc_domain, 1607009ea47eSEdward Tomasz Napierala idc->idc_socktype, idc->idc_protocol, from_sa, to_sa); 1608009ea47eSEdward Tomasz Napierala free(from_sa, M_SONAME); 1609009ea47eSEdward Tomasz Napierala free(to_sa, M_SONAME); 1610009ea47eSEdward Tomasz Napierala 1611009ea47eSEdward Tomasz Napierala /* 1612009ea47eSEdward Tomasz Napierala * Digests are always disabled during login phase. 1613009ea47eSEdward Tomasz Napierala */ 1614009ea47eSEdward Tomasz Napierala is->is_conn->ic_header_crc32c = false; 1615009ea47eSEdward Tomasz Napierala is->is_conn->ic_data_crc32c = false; 1616009ea47eSEdward Tomasz Napierala 1617009ea47eSEdward Tomasz Napierala return (error); 1618009ea47eSEdward Tomasz Napierala } 1619009ea47eSEdward Tomasz Napierala 1620009ea47eSEdward Tomasz Napierala static int 1621009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_send(struct iscsi_softc *sc, 1622009ea47eSEdward Tomasz Napierala struct iscsi_daemon_send *ids) 1623009ea47eSEdward Tomasz Napierala { 1624009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1625009ea47eSEdward Tomasz Napierala struct icl_pdu *ip; 1626009ea47eSEdward Tomasz Napierala size_t datalen; 1627009ea47eSEdward Tomasz Napierala void *data; 1628009ea47eSEdward Tomasz Napierala int error; 1629009ea47eSEdward Tomasz Napierala 1630009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1631009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1632009ea47eSEdward Tomasz Napierala if (is->is_id == ids->ids_session_id) 1633009ea47eSEdward Tomasz Napierala break; 1634009ea47eSEdward Tomasz Napierala } 1635009ea47eSEdward Tomasz Napierala if (is == NULL) { 1636009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1637009ea47eSEdward Tomasz Napierala return (ESRCH); 1638009ea47eSEdward Tomasz Napierala } 1639009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1640009ea47eSEdward Tomasz Napierala 1641009ea47eSEdward Tomasz Napierala if (is->is_login_phase == false) 1642009ea47eSEdward Tomasz Napierala return (EBUSY); 1643009ea47eSEdward Tomasz Napierala 1644009ea47eSEdward Tomasz Napierala if (is->is_terminating || is->is_reconnecting) 1645009ea47eSEdward Tomasz Napierala return (EIO); 1646009ea47eSEdward Tomasz Napierala 1647009ea47eSEdward Tomasz Napierala datalen = ids->ids_data_segment_len; 164897b84d34SNavdeep Parhar if (datalen > is->is_max_send_data_segment_length) 1649009ea47eSEdward Tomasz Napierala return (EINVAL); 1650009ea47eSEdward Tomasz Napierala if (datalen > 0) { 1651009ea47eSEdward Tomasz Napierala data = malloc(datalen, M_ISCSI, M_WAITOK); 1652009ea47eSEdward Tomasz Napierala error = copyin(ids->ids_data_segment, data, datalen); 1653009ea47eSEdward Tomasz Napierala if (error != 0) { 1654009ea47eSEdward Tomasz Napierala free(data, M_ISCSI); 1655009ea47eSEdward Tomasz Napierala return (error); 1656009ea47eSEdward Tomasz Napierala } 1657009ea47eSEdward Tomasz Napierala } 1658009ea47eSEdward Tomasz Napierala 1659d2d52b00SEdward Tomasz Napierala ip = icl_pdu_new(is->is_conn, M_WAITOK); 1660009ea47eSEdward Tomasz Napierala memcpy(ip->ip_bhs, ids->ids_bhs, sizeof(*ip->ip_bhs)); 1661009ea47eSEdward Tomasz Napierala if (datalen > 0) { 1662009ea47eSEdward Tomasz Napierala error = icl_pdu_append_data(ip, data, datalen, M_WAITOK); 1663009ea47eSEdward Tomasz Napierala KASSERT(error == 0, ("icl_pdu_append_data(..., M_WAITOK) failed")); 1664009ea47eSEdward Tomasz Napierala free(data, M_ISCSI); 1665009ea47eSEdward Tomasz Napierala } 1666d66a906bSEdward Tomasz Napierala iscsi_pdu_queue(ip); 1667009ea47eSEdward Tomasz Napierala 1668009ea47eSEdward Tomasz Napierala return (0); 1669009ea47eSEdward Tomasz Napierala } 1670009ea47eSEdward Tomasz Napierala 1671009ea47eSEdward Tomasz Napierala static int 1672009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_receive(struct iscsi_softc *sc, 1673009ea47eSEdward Tomasz Napierala struct iscsi_daemon_receive *idr) 1674009ea47eSEdward Tomasz Napierala { 1675009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1676009ea47eSEdward Tomasz Napierala struct icl_pdu *ip; 1677009ea47eSEdward Tomasz Napierala void *data; 16782f0586b2SEdward Tomasz Napierala int error; 1679009ea47eSEdward Tomasz Napierala 1680009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1681009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1682009ea47eSEdward Tomasz Napierala if (is->is_id == idr->idr_session_id) 1683009ea47eSEdward Tomasz Napierala break; 1684009ea47eSEdward Tomasz Napierala } 1685009ea47eSEdward Tomasz Napierala if (is == NULL) { 1686009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1687009ea47eSEdward Tomasz Napierala return (ESRCH); 1688009ea47eSEdward Tomasz Napierala } 1689009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1690009ea47eSEdward Tomasz Napierala 1691009ea47eSEdward Tomasz Napierala if (is->is_login_phase == false) 1692009ea47eSEdward Tomasz Napierala return (EBUSY); 1693009ea47eSEdward Tomasz Napierala 1694009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1695009ea47eSEdward Tomasz Napierala while (is->is_login_pdu == NULL && 1696009ea47eSEdward Tomasz Napierala is->is_terminating == false && 16972f0586b2SEdward Tomasz Napierala is->is_reconnecting == false) { 16982f0586b2SEdward Tomasz Napierala error = cv_wait_sig(&is->is_login_cv, &is->is_lock); 16992f0586b2SEdward Tomasz Napierala if (error != 0) { 17002f0586b2SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 17012f0586b2SEdward Tomasz Napierala return (error); 17022f0586b2SEdward Tomasz Napierala } 17032f0586b2SEdward Tomasz Napierala } 1704009ea47eSEdward Tomasz Napierala if (is->is_terminating || is->is_reconnecting) { 1705009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1706009ea47eSEdward Tomasz Napierala return (EIO); 1707009ea47eSEdward Tomasz Napierala } 1708009ea47eSEdward Tomasz Napierala ip = is->is_login_pdu; 1709009ea47eSEdward Tomasz Napierala is->is_login_pdu = NULL; 1710009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1711009ea47eSEdward Tomasz Napierala 1712009ea47eSEdward Tomasz Napierala if (ip->ip_data_len > idr->idr_data_segment_len) { 1713009ea47eSEdward Tomasz Napierala icl_pdu_free(ip); 1714009ea47eSEdward Tomasz Napierala return (EMSGSIZE); 1715009ea47eSEdward Tomasz Napierala } 1716009ea47eSEdward Tomasz Napierala 1717009ea47eSEdward Tomasz Napierala copyout(ip->ip_bhs, idr->idr_bhs, sizeof(*ip->ip_bhs)); 1718009ea47eSEdward Tomasz Napierala if (ip->ip_data_len > 0) { 1719009ea47eSEdward Tomasz Napierala data = malloc(ip->ip_data_len, M_ISCSI, M_WAITOK); 1720009ea47eSEdward Tomasz Napierala icl_pdu_get_data(ip, 0, data, ip->ip_data_len); 1721009ea47eSEdward Tomasz Napierala copyout(data, idr->idr_data_segment, ip->ip_data_len); 1722009ea47eSEdward Tomasz Napierala free(data, M_ISCSI); 1723009ea47eSEdward Tomasz Napierala } 1724009ea47eSEdward Tomasz Napierala 1725009ea47eSEdward Tomasz Napierala icl_pdu_free(ip); 1726009ea47eSEdward Tomasz Napierala 1727009ea47eSEdward Tomasz Napierala return (0); 1728009ea47eSEdward Tomasz Napierala } 1729009ea47eSEdward Tomasz Napierala #endif /* ICL_KERNEL_PROXY */ 1730009ea47eSEdward Tomasz Napierala 1731009ea47eSEdward Tomasz Napierala static void 1732009ea47eSEdward Tomasz Napierala iscsi_sanitize_session_conf(struct iscsi_session_conf *isc) 1733009ea47eSEdward Tomasz Napierala { 1734009ea47eSEdward Tomasz Napierala /* 1735009ea47eSEdward Tomasz Napierala * Just make sure all the fields are null-terminated. 1736009ea47eSEdward Tomasz Napierala * 1737009ea47eSEdward Tomasz Napierala * XXX: This is not particularly secure. We should 1738009ea47eSEdward Tomasz Napierala * create our own conf and then copy in relevant 1739009ea47eSEdward Tomasz Napierala * fields. 1740009ea47eSEdward Tomasz Napierala */ 1741009ea47eSEdward Tomasz Napierala isc->isc_initiator[ISCSI_NAME_LEN - 1] = '\0'; 1742009ea47eSEdward Tomasz Napierala isc->isc_initiator_addr[ISCSI_ADDR_LEN - 1] = '\0'; 1743009ea47eSEdward Tomasz Napierala isc->isc_initiator_alias[ISCSI_ALIAS_LEN - 1] = '\0'; 1744009ea47eSEdward Tomasz Napierala isc->isc_target[ISCSI_NAME_LEN - 1] = '\0'; 1745009ea47eSEdward Tomasz Napierala isc->isc_target_addr[ISCSI_ADDR_LEN - 1] = '\0'; 1746009ea47eSEdward Tomasz Napierala isc->isc_user[ISCSI_NAME_LEN - 1] = '\0'; 1747009ea47eSEdward Tomasz Napierala isc->isc_secret[ISCSI_SECRET_LEN - 1] = '\0'; 1748009ea47eSEdward Tomasz Napierala isc->isc_mutual_user[ISCSI_NAME_LEN - 1] = '\0'; 1749009ea47eSEdward Tomasz Napierala isc->isc_mutual_secret[ISCSI_SECRET_LEN - 1] = '\0'; 1750009ea47eSEdward Tomasz Napierala } 1751009ea47eSEdward Tomasz Napierala 175251be90b5SEdward Tomasz Napierala static bool 175351be90b5SEdward Tomasz Napierala iscsi_valid_session_conf(const struct iscsi_session_conf *isc) 175451be90b5SEdward Tomasz Napierala { 175551be90b5SEdward Tomasz Napierala 175651be90b5SEdward Tomasz Napierala if (isc->isc_initiator[0] == '\0') { 175751be90b5SEdward Tomasz Napierala ISCSI_DEBUG("empty isc_initiator"); 175851be90b5SEdward Tomasz Napierala return (false); 175951be90b5SEdward Tomasz Napierala } 176051be90b5SEdward Tomasz Napierala 176151be90b5SEdward Tomasz Napierala if (isc->isc_target_addr[0] == '\0') { 176251be90b5SEdward Tomasz Napierala ISCSI_DEBUG("empty isc_target_addr"); 176351be90b5SEdward Tomasz Napierala return (false); 176451be90b5SEdward Tomasz Napierala } 176551be90b5SEdward Tomasz Napierala 176651be90b5SEdward Tomasz Napierala if (isc->isc_discovery != 0 && isc->isc_target[0] != 0) { 176751be90b5SEdward Tomasz Napierala ISCSI_DEBUG("non-empty isc_target for discovery session"); 176851be90b5SEdward Tomasz Napierala return (false); 176951be90b5SEdward Tomasz Napierala } 177051be90b5SEdward Tomasz Napierala 177151be90b5SEdward Tomasz Napierala if (isc->isc_discovery == 0 && isc->isc_target[0] == 0) { 177251be90b5SEdward Tomasz Napierala ISCSI_DEBUG("empty isc_target for non-discovery session"); 177351be90b5SEdward Tomasz Napierala return (false); 177451be90b5SEdward Tomasz Napierala } 177551be90b5SEdward Tomasz Napierala 177651be90b5SEdward Tomasz Napierala return (true); 177751be90b5SEdward Tomasz Napierala } 177851be90b5SEdward Tomasz Napierala 1779009ea47eSEdward Tomasz Napierala static int 1780009ea47eSEdward Tomasz Napierala iscsi_ioctl_session_add(struct iscsi_softc *sc, struct iscsi_session_add *isa) 1781009ea47eSEdward Tomasz Napierala { 1782009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1783009ea47eSEdward Tomasz Napierala const struct iscsi_session *is2; 1784009ea47eSEdward Tomasz Napierala int error; 1785009ea47eSEdward Tomasz Napierala 1786009ea47eSEdward Tomasz Napierala iscsi_sanitize_session_conf(&isa->isa_conf); 178751be90b5SEdward Tomasz Napierala if (iscsi_valid_session_conf(&isa->isa_conf) == false) 178851be90b5SEdward Tomasz Napierala return (EINVAL); 1789009ea47eSEdward Tomasz Napierala 1790009ea47eSEdward Tomasz Napierala is = malloc(sizeof(*is), M_ISCSI, M_ZERO | M_WAITOK); 1791009ea47eSEdward Tomasz Napierala memcpy(&is->is_conf, &isa->isa_conf, sizeof(is->is_conf)); 1792009ea47eSEdward Tomasz Napierala 1793009ea47eSEdward Tomasz Napierala sx_xlock(&sc->sc_lock); 1794009ea47eSEdward Tomasz Napierala 1795009ea47eSEdward Tomasz Napierala /* 1796009ea47eSEdward Tomasz Napierala * Prevent duplicates. 1797009ea47eSEdward Tomasz Napierala */ 1798009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is2, &sc->sc_sessions, is_next) { 17997843bd03SEdward Tomasz Napierala if (!!is->is_conf.isc_discovery != 18007843bd03SEdward Tomasz Napierala !!is2->is_conf.isc_discovery) 18017843bd03SEdward Tomasz Napierala continue; 18027843bd03SEdward Tomasz Napierala 18037843bd03SEdward Tomasz Napierala if (strcmp(is->is_conf.isc_target_addr, 18047843bd03SEdward Tomasz Napierala is2->is_conf.isc_target_addr) != 0) 18057843bd03SEdward Tomasz Napierala continue; 18067843bd03SEdward Tomasz Napierala 18077843bd03SEdward Tomasz Napierala if (is->is_conf.isc_discovery == 0 && 18087843bd03SEdward Tomasz Napierala strcmp(is->is_conf.isc_target, 18097843bd03SEdward Tomasz Napierala is2->is_conf.isc_target) != 0) 18107843bd03SEdward Tomasz Napierala continue; 18117843bd03SEdward Tomasz Napierala 1812009ea47eSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 18137843bd03SEdward Tomasz Napierala free(is, M_ISCSI); 1814009ea47eSEdward Tomasz Napierala return (EBUSY); 1815009ea47eSEdward Tomasz Napierala } 1816009ea47eSEdward Tomasz Napierala 181782babffbSEdward Tomasz Napierala is->is_conn = icl_new_conn(is->is_conf.isc_offload, 1818b8911594SEdward Tomasz Napierala is->is_conf.isc_iser, "iscsi", &is->is_lock); 181982babffbSEdward Tomasz Napierala if (is->is_conn == NULL) { 182082babffbSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 182182babffbSEdward Tomasz Napierala free(is, M_ISCSI); 182282babffbSEdward Tomasz Napierala return (EINVAL); 182382babffbSEdward Tomasz Napierala } 1824009ea47eSEdward Tomasz Napierala is->is_conn->ic_receive = iscsi_receive_callback; 1825009ea47eSEdward Tomasz Napierala is->is_conn->ic_error = iscsi_error_callback; 1826009ea47eSEdward Tomasz Napierala is->is_conn->ic_prv0 = is; 1827009ea47eSEdward Tomasz Napierala TAILQ_INIT(&is->is_outstanding); 182816c158a5SEdward Tomasz Napierala STAILQ_INIT(&is->is_postponed); 1829009ea47eSEdward Tomasz Napierala mtx_init(&is->is_lock, "iscsi_lock", NULL, MTX_DEF); 1830009ea47eSEdward Tomasz Napierala cv_init(&is->is_maintenance_cv, "iscsi_mt"); 1831009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 1832009ea47eSEdward Tomasz Napierala cv_init(&is->is_login_cv, "iscsi_login"); 1833009ea47eSEdward Tomasz Napierala #endif 1834009ea47eSEdward Tomasz Napierala 1835009ea47eSEdward Tomasz Napierala is->is_softc = sc; 1836009ea47eSEdward Tomasz Napierala sc->sc_last_session_id++; 1837009ea47eSEdward Tomasz Napierala is->is_id = sc->sc_last_session_id; 1838ffe82e05SAlexander Motin is->is_isid[0] = 0x80; /* RFC 3720, 10.12.5: 10b, "Random" ISID. */ 1839ffe82e05SAlexander Motin arc4rand(&is->is_isid[1], 5, 0); 1840ffe82e05SAlexander Motin is->is_tsih = 0; 1841009ea47eSEdward Tomasz Napierala callout_init(&is->is_callout, 1); 1842009ea47eSEdward Tomasz Napierala 1843009ea47eSEdward Tomasz Napierala error = kthread_add(iscsi_maintenance_thread, is, NULL, NULL, 0, 0, "iscsimt"); 1844009ea47eSEdward Tomasz Napierala if (error != 0) { 1845009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "kthread_add(9) failed with error %d", error); 184609f2b94bSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 1847009ea47eSEdward Tomasz Napierala return (error); 1848009ea47eSEdward Tomasz Napierala } 1849009ea47eSEdward Tomasz Napierala 185009f2b94bSEdward Tomasz Napierala callout_reset(&is->is_callout, 1 * hz, iscsi_callout, is); 185109f2b94bSEdward Tomasz Napierala TAILQ_INSERT_TAIL(&sc->sc_sessions, is, is_next); 185209f2b94bSEdward Tomasz Napierala 18532be596adSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1854ba165a31SEdward Tomasz Napierala /* 1855ba165a31SEdward Tomasz Napierala * Don't notify iscsid(8) if the session is disabled and it's not 1856ba165a31SEdward Tomasz Napierala * a discovery session, 1857ba165a31SEdward Tomasz Napierala */ 1858ba165a31SEdward Tomasz Napierala if (is->is_conf.isc_enable == 0 && is->is_conf.isc_discovery == 0) { 1859ba165a31SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1860ba165a31SEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 1861ba165a31SEdward Tomasz Napierala return (0); 1862ba165a31SEdward Tomasz Napierala } 1863ba165a31SEdward Tomasz Napierala 1864009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = true; 1865009ea47eSEdward Tomasz Napierala strlcpy(is->is_reason, "Waiting for iscsid(8)", sizeof(is->is_reason)); 18662be596adSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1867009ea47eSEdward Tomasz Napierala cv_signal(&sc->sc_cv); 1868009ea47eSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 1869009ea47eSEdward Tomasz Napierala return (0); 1870009ea47eSEdward Tomasz Napierala } 1871009ea47eSEdward Tomasz Napierala 1872009ea47eSEdward Tomasz Napierala static bool 1873009ea47eSEdward Tomasz Napierala iscsi_session_conf_matches(unsigned int id1, const struct iscsi_session_conf *c1, 1874009ea47eSEdward Tomasz Napierala unsigned int id2, const struct iscsi_session_conf *c2) 1875009ea47eSEdward Tomasz Napierala { 18766cc1e267SEdward Tomasz Napierala 18776cc1e267SEdward Tomasz Napierala if (id2 != 0 && id2 != id1) 1878009ea47eSEdward Tomasz Napierala return (false); 18796cc1e267SEdward Tomasz Napierala if (c2->isc_target[0] != '\0' && 18806cc1e267SEdward Tomasz Napierala strcmp(c1->isc_target, c2->isc_target) != 0) 18816cc1e267SEdward Tomasz Napierala return (false); 18826cc1e267SEdward Tomasz Napierala if (c2->isc_target_addr[0] != '\0' && 18836cc1e267SEdward Tomasz Napierala strcmp(c1->isc_target_addr, c2->isc_target_addr) != 0) 18846cc1e267SEdward Tomasz Napierala return (false); 18856cc1e267SEdward Tomasz Napierala return (true); 1886009ea47eSEdward Tomasz Napierala } 1887009ea47eSEdward Tomasz Napierala 1888009ea47eSEdward Tomasz Napierala static int 1889009ea47eSEdward Tomasz Napierala iscsi_ioctl_session_remove(struct iscsi_softc *sc, 1890009ea47eSEdward Tomasz Napierala struct iscsi_session_remove *isr) 1891009ea47eSEdward Tomasz Napierala { 1892009ea47eSEdward Tomasz Napierala struct iscsi_session *is, *tmp; 1893009ea47eSEdward Tomasz Napierala bool found = false; 1894009ea47eSEdward Tomasz Napierala 1895009ea47eSEdward Tomasz Napierala iscsi_sanitize_session_conf(&isr->isr_conf); 1896009ea47eSEdward Tomasz Napierala 1897009ea47eSEdward Tomasz Napierala sx_xlock(&sc->sc_lock); 1898009ea47eSEdward Tomasz Napierala TAILQ_FOREACH_SAFE(is, &sc->sc_sessions, is_next, tmp) { 1899009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1900009ea47eSEdward Tomasz Napierala if (iscsi_session_conf_matches(is->is_id, &is->is_conf, 1901009ea47eSEdward Tomasz Napierala isr->isr_session_id, &isr->isr_conf)) { 1902009ea47eSEdward Tomasz Napierala found = true; 1903009ea47eSEdward Tomasz Napierala iscsi_session_logout(is); 1904009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1905009ea47eSEdward Tomasz Napierala } 1906009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1907009ea47eSEdward Tomasz Napierala } 1908009ea47eSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 1909009ea47eSEdward Tomasz Napierala 1910009ea47eSEdward Tomasz Napierala if (!found) 1911009ea47eSEdward Tomasz Napierala return (ESRCH); 1912009ea47eSEdward Tomasz Napierala 1913009ea47eSEdward Tomasz Napierala return (0); 1914009ea47eSEdward Tomasz Napierala } 1915009ea47eSEdward Tomasz Napierala 1916009ea47eSEdward Tomasz Napierala static int 1917009ea47eSEdward Tomasz Napierala iscsi_ioctl_session_list(struct iscsi_softc *sc, struct iscsi_session_list *isl) 1918009ea47eSEdward Tomasz Napierala { 1919009ea47eSEdward Tomasz Napierala int error; 1920009ea47eSEdward Tomasz Napierala unsigned int i = 0; 1921009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1922009ea47eSEdward Tomasz Napierala struct iscsi_session_state iss; 1923009ea47eSEdward Tomasz Napierala 1924009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1925009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1926009ea47eSEdward Tomasz Napierala if (i >= isl->isl_nentries) { 1927009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1928009ea47eSEdward Tomasz Napierala return (EMSGSIZE); 1929009ea47eSEdward Tomasz Napierala } 1930009ea47eSEdward Tomasz Napierala memset(&iss, 0, sizeof(iss)); 1931009ea47eSEdward Tomasz Napierala memcpy(&iss.iss_conf, &is->is_conf, sizeof(iss.iss_conf)); 1932009ea47eSEdward Tomasz Napierala iss.iss_id = is->is_id; 1933009ea47eSEdward Tomasz Napierala strlcpy(iss.iss_target_alias, is->is_target_alias, sizeof(iss.iss_target_alias)); 1934009ea47eSEdward Tomasz Napierala strlcpy(iss.iss_reason, is->is_reason, sizeof(iss.iss_reason)); 193582babffbSEdward Tomasz Napierala strlcpy(iss.iss_offload, is->is_conn->ic_offload, sizeof(iss.iss_offload)); 1936009ea47eSEdward Tomasz Napierala 1937009ea47eSEdward Tomasz Napierala if (is->is_conn->ic_header_crc32c) 1938009ea47eSEdward Tomasz Napierala iss.iss_header_digest = ISCSI_DIGEST_CRC32C; 1939009ea47eSEdward Tomasz Napierala else 1940009ea47eSEdward Tomasz Napierala iss.iss_header_digest = ISCSI_DIGEST_NONE; 1941009ea47eSEdward Tomasz Napierala 1942009ea47eSEdward Tomasz Napierala if (is->is_conn->ic_data_crc32c) 1943009ea47eSEdward Tomasz Napierala iss.iss_data_digest = ISCSI_DIGEST_CRC32C; 1944009ea47eSEdward Tomasz Napierala else 1945009ea47eSEdward Tomasz Napierala iss.iss_data_digest = ISCSI_DIGEST_NONE; 1946009ea47eSEdward Tomasz Napierala 194797b84d34SNavdeep Parhar iss.iss_max_send_data_segment_length = 194897b84d34SNavdeep Parhar is->is_max_send_data_segment_length; 194997b84d34SNavdeep Parhar iss.iss_max_recv_data_segment_length = 195097b84d34SNavdeep Parhar is->is_max_recv_data_segment_length; 19514e5408f1SEdward Tomasz Napierala iss.iss_max_burst_length = is->is_max_burst_length; 19524e5408f1SEdward Tomasz Napierala iss.iss_first_burst_length = is->is_first_burst_length; 1953009ea47eSEdward Tomasz Napierala iss.iss_immediate_data = is->is_immediate_data; 1954009ea47eSEdward Tomasz Napierala iss.iss_connected = is->is_connected; 1955009ea47eSEdward Tomasz Napierala 1956009ea47eSEdward Tomasz Napierala error = copyout(&iss, isl->isl_pstates + i, sizeof(iss)); 1957009ea47eSEdward Tomasz Napierala if (error != 0) { 1958009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1959009ea47eSEdward Tomasz Napierala return (error); 1960009ea47eSEdward Tomasz Napierala } 1961009ea47eSEdward Tomasz Napierala i++; 1962009ea47eSEdward Tomasz Napierala } 1963009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1964009ea47eSEdward Tomasz Napierala 1965009ea47eSEdward Tomasz Napierala isl->isl_nentries = i; 1966009ea47eSEdward Tomasz Napierala 1967009ea47eSEdward Tomasz Napierala return (0); 1968009ea47eSEdward Tomasz Napierala } 1969009ea47eSEdward Tomasz Napierala 1970009ea47eSEdward Tomasz Napierala static int 197151be90b5SEdward Tomasz Napierala iscsi_ioctl_session_modify(struct iscsi_softc *sc, 197251be90b5SEdward Tomasz Napierala struct iscsi_session_modify *ism) 197351be90b5SEdward Tomasz Napierala { 197451be90b5SEdward Tomasz Napierala struct iscsi_session *is; 197551be90b5SEdward Tomasz Napierala 197651be90b5SEdward Tomasz Napierala iscsi_sanitize_session_conf(&ism->ism_conf); 197751be90b5SEdward Tomasz Napierala if (iscsi_valid_session_conf(&ism->ism_conf) == false) 197851be90b5SEdward Tomasz Napierala return (EINVAL); 197951be90b5SEdward Tomasz Napierala 198051be90b5SEdward Tomasz Napierala sx_xlock(&sc->sc_lock); 198151be90b5SEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 198251be90b5SEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 198351be90b5SEdward Tomasz Napierala if (is->is_id == ism->ism_session_id) 198451be90b5SEdward Tomasz Napierala break; 198551be90b5SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 198651be90b5SEdward Tomasz Napierala } 198751be90b5SEdward Tomasz Napierala if (is == NULL) { 198851be90b5SEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 198951be90b5SEdward Tomasz Napierala return (ESRCH); 199051be90b5SEdward Tomasz Napierala } 199151be90b5SEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 199251be90b5SEdward Tomasz Napierala 199351be90b5SEdward Tomasz Napierala memcpy(&is->is_conf, &ism->ism_conf, sizeof(is->is_conf)); 199451be90b5SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 199551be90b5SEdward Tomasz Napierala 199651be90b5SEdward Tomasz Napierala iscsi_session_reconnect(is); 199751be90b5SEdward Tomasz Napierala 199851be90b5SEdward Tomasz Napierala return (0); 199951be90b5SEdward Tomasz Napierala } 200051be90b5SEdward Tomasz Napierala 200151be90b5SEdward Tomasz Napierala static int 2002009ea47eSEdward Tomasz Napierala iscsi_ioctl(struct cdev *dev, u_long cmd, caddr_t arg, int mode, 2003009ea47eSEdward Tomasz Napierala struct thread *td) 2004009ea47eSEdward Tomasz Napierala { 2005009ea47eSEdward Tomasz Napierala struct iscsi_softc *sc; 2006009ea47eSEdward Tomasz Napierala 2007009ea47eSEdward Tomasz Napierala sc = dev->si_drv1; 2008009ea47eSEdward Tomasz Napierala 2009009ea47eSEdward Tomasz Napierala switch (cmd) { 2010009ea47eSEdward Tomasz Napierala case ISCSIDWAIT: 2011009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_wait(sc, 2012009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_request *)arg)); 2013009ea47eSEdward Tomasz Napierala case ISCSIDHANDOFF: 2014009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_handoff(sc, 2015009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_handoff *)arg)); 2016009ea47eSEdward Tomasz Napierala case ISCSIDFAIL: 2017009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_fail(sc, 2018009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_fail *)arg)); 2019009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 2020009ea47eSEdward Tomasz Napierala case ISCSIDCONNECT: 2021009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_connect(sc, 2022009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_connect *)arg)); 2023009ea47eSEdward Tomasz Napierala case ISCSIDSEND: 2024009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_send(sc, 2025009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_send *)arg)); 2026009ea47eSEdward Tomasz Napierala case ISCSIDRECEIVE: 2027009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_receive(sc, 2028009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_receive *)arg)); 2029009ea47eSEdward Tomasz Napierala #endif /* ICL_KERNEL_PROXY */ 2030009ea47eSEdward Tomasz Napierala case ISCSISADD: 2031009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_session_add(sc, 2032009ea47eSEdward Tomasz Napierala (struct iscsi_session_add *)arg)); 2033009ea47eSEdward Tomasz Napierala case ISCSISREMOVE: 2034009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_session_remove(sc, 2035009ea47eSEdward Tomasz Napierala (struct iscsi_session_remove *)arg)); 2036009ea47eSEdward Tomasz Napierala case ISCSISLIST: 2037009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_session_list(sc, 2038009ea47eSEdward Tomasz Napierala (struct iscsi_session_list *)arg)); 203951be90b5SEdward Tomasz Napierala case ISCSISMODIFY: 204051be90b5SEdward Tomasz Napierala return (iscsi_ioctl_session_modify(sc, 204151be90b5SEdward Tomasz Napierala (struct iscsi_session_modify *)arg)); 2042009ea47eSEdward Tomasz Napierala default: 2043009ea47eSEdward Tomasz Napierala return (EINVAL); 2044009ea47eSEdward Tomasz Napierala } 2045009ea47eSEdward Tomasz Napierala } 2046009ea47eSEdward Tomasz Napierala 2047009ea47eSEdward Tomasz Napierala static struct iscsi_outstanding * 2048009ea47eSEdward Tomasz Napierala iscsi_outstanding_find(struct iscsi_session *is, uint32_t initiator_task_tag) 2049009ea47eSEdward Tomasz Napierala { 2050009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io; 2051009ea47eSEdward Tomasz Napierala 2052009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 2053009ea47eSEdward Tomasz Napierala 2054009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(io, &is->is_outstanding, io_next) { 2055009ea47eSEdward Tomasz Napierala if (io->io_initiator_task_tag == initiator_task_tag) 2056009ea47eSEdward Tomasz Napierala return (io); 2057009ea47eSEdward Tomasz Napierala } 2058009ea47eSEdward Tomasz Napierala return (NULL); 2059009ea47eSEdward Tomasz Napierala } 2060009ea47eSEdward Tomasz Napierala 2061aa75114cSAlexander Motin static struct iscsi_outstanding * 2062aa75114cSAlexander Motin iscsi_outstanding_find_ccb(struct iscsi_session *is, union ccb *ccb) 2063aa75114cSAlexander Motin { 2064aa75114cSAlexander Motin struct iscsi_outstanding *io; 2065aa75114cSAlexander Motin 2066aa75114cSAlexander Motin ISCSI_SESSION_LOCK_ASSERT(is); 2067aa75114cSAlexander Motin 2068aa75114cSAlexander Motin TAILQ_FOREACH(io, &is->is_outstanding, io_next) { 2069aa75114cSAlexander Motin if (io->io_ccb == ccb) 2070aa75114cSAlexander Motin return (io); 2071aa75114cSAlexander Motin } 2072aa75114cSAlexander Motin return (NULL); 2073aa75114cSAlexander Motin } 2074aa75114cSAlexander Motin 2075aa75114cSAlexander Motin static struct iscsi_outstanding * 2076604c023fSEdward Tomasz Napierala iscsi_outstanding_add(struct iscsi_session *is, struct icl_pdu *request, 20777a03d007SEdward Tomasz Napierala union ccb *ccb, uint32_t *initiator_task_tagp) 2078009ea47eSEdward Tomasz Napierala { 2079009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io; 20807a03d007SEdward Tomasz Napierala int error; 2081009ea47eSEdward Tomasz Napierala 2082009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 2083009ea47eSEdward Tomasz Napierala 2084009ea47eSEdward Tomasz Napierala io = uma_zalloc(iscsi_outstanding_zone, M_NOWAIT | M_ZERO); 2085009ea47eSEdward Tomasz Napierala if (io == NULL) { 20867a03d007SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate %zd bytes", 20877a03d007SEdward Tomasz Napierala sizeof(*io)); 2088aa75114cSAlexander Motin return (NULL); 2089009ea47eSEdward Tomasz Napierala } 20907a03d007SEdward Tomasz Napierala 2091604c023fSEdward Tomasz Napierala error = icl_conn_task_setup(is->is_conn, request, &ccb->csio, 20927a03d007SEdward Tomasz Napierala initiator_task_tagp, &io->io_icl_prv); 20937a03d007SEdward Tomasz Napierala if (error != 0) { 20947a03d007SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, 20957a03d007SEdward Tomasz Napierala "icl_conn_task_setup() failed with error %d", error); 20967a03d007SEdward Tomasz Napierala uma_zfree(iscsi_outstanding_zone, io); 20977a03d007SEdward Tomasz Napierala return (NULL); 20987a03d007SEdward Tomasz Napierala } 20997a03d007SEdward Tomasz Napierala 21007a03d007SEdward Tomasz Napierala KASSERT(iscsi_outstanding_find(is, *initiator_task_tagp) == NULL, 21017a03d007SEdward Tomasz Napierala ("initiator_task_tag 0x%x already added", *initiator_task_tagp)); 21027a03d007SEdward Tomasz Napierala 21037a03d007SEdward Tomasz Napierala io->io_initiator_task_tag = *initiator_task_tagp; 2104009ea47eSEdward Tomasz Napierala io->io_ccb = ccb; 2105009ea47eSEdward Tomasz Napierala TAILQ_INSERT_TAIL(&is->is_outstanding, io, io_next); 2106aa75114cSAlexander Motin return (io); 2107009ea47eSEdward Tomasz Napierala } 2108009ea47eSEdward Tomasz Napierala 2109009ea47eSEdward Tomasz Napierala static void 2110009ea47eSEdward Tomasz Napierala iscsi_outstanding_remove(struct iscsi_session *is, struct iscsi_outstanding *io) 2111009ea47eSEdward Tomasz Napierala { 2112009ea47eSEdward Tomasz Napierala 2113009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 2114009ea47eSEdward Tomasz Napierala 21157a03d007SEdward Tomasz Napierala icl_conn_task_done(is->is_conn, io->io_icl_prv); 2116009ea47eSEdward Tomasz Napierala TAILQ_REMOVE(&is->is_outstanding, io, io_next); 2117009ea47eSEdward Tomasz Napierala uma_zfree(iscsi_outstanding_zone, io); 2118009ea47eSEdward Tomasz Napierala } 2119009ea47eSEdward Tomasz Napierala 2120009ea47eSEdward Tomasz Napierala static void 2121aa75114cSAlexander Motin iscsi_action_abort(struct iscsi_session *is, union ccb *ccb) 2122aa75114cSAlexander Motin { 2123aa75114cSAlexander Motin struct icl_pdu *request; 2124aa75114cSAlexander Motin struct iscsi_bhs_task_management_request *bhstmr; 2125aa75114cSAlexander Motin struct ccb_abort *cab = &ccb->cab; 2126aa75114cSAlexander Motin struct iscsi_outstanding *io, *aio; 21277a03d007SEdward Tomasz Napierala uint32_t initiator_task_tag; 2128aa75114cSAlexander Motin 2129aa75114cSAlexander Motin ISCSI_SESSION_LOCK_ASSERT(is); 2130aa75114cSAlexander Motin 2131aa75114cSAlexander Motin #if 0 2132aa75114cSAlexander Motin KASSERT(is->is_login_phase == false, ("%s called during Login Phase", __func__)); 2133aa75114cSAlexander Motin #else 2134aa75114cSAlexander Motin if (is->is_login_phase) { 2135aa75114cSAlexander Motin ccb->ccb_h.status = CAM_REQ_ABORTED; 2136aa75114cSAlexander Motin xpt_done(ccb); 2137aa75114cSAlexander Motin return; 2138aa75114cSAlexander Motin } 2139aa75114cSAlexander Motin #endif 2140aa75114cSAlexander Motin 2141aa75114cSAlexander Motin aio = iscsi_outstanding_find_ccb(is, cab->abort_ccb); 2142aa75114cSAlexander Motin if (aio == NULL) { 2143aa75114cSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP; 2144aa75114cSAlexander Motin xpt_done(ccb); 2145aa75114cSAlexander Motin return; 2146aa75114cSAlexander Motin } 2147aa75114cSAlexander Motin 2148d2d52b00SEdward Tomasz Napierala request = icl_pdu_new(is->is_conn, M_NOWAIT); 2149aa75114cSAlexander Motin if (request == NULL) { 2150aa75114cSAlexander Motin ccb->ccb_h.status = CAM_RESRC_UNAVAIL; 2151aa75114cSAlexander Motin xpt_done(ccb); 2152aa75114cSAlexander Motin return; 2153aa75114cSAlexander Motin } 2154aa75114cSAlexander Motin 21557a03d007SEdward Tomasz Napierala initiator_task_tag = is->is_initiator_task_tag++; 2156aa75114cSAlexander Motin 2157604c023fSEdward Tomasz Napierala io = iscsi_outstanding_add(is, request, NULL, &initiator_task_tag); 2158aa75114cSAlexander Motin if (io == NULL) { 2159aa75114cSAlexander Motin icl_pdu_free(request); 2160aa75114cSAlexander Motin ccb->ccb_h.status = CAM_RESRC_UNAVAIL; 2161aa75114cSAlexander Motin xpt_done(ccb); 2162aa75114cSAlexander Motin return; 2163aa75114cSAlexander Motin } 2164aa75114cSAlexander Motin io->io_datasn = aio->io_initiator_task_tag; 21657a03d007SEdward Tomasz Napierala 21667a03d007SEdward Tomasz Napierala bhstmr = (struct iscsi_bhs_task_management_request *)request->ip_bhs; 21677a03d007SEdward Tomasz Napierala bhstmr->bhstmr_opcode = ISCSI_BHS_OPCODE_TASK_REQUEST; 21687a03d007SEdward Tomasz Napierala bhstmr->bhstmr_function = 0x80 | BHSTMR_FUNCTION_ABORT_TASK; 21697a03d007SEdward Tomasz Napierala bhstmr->bhstmr_lun = htobe64(CAM_EXTLUN_BYTE_SWIZZLE(ccb->ccb_h.target_lun)); 21707a03d007SEdward Tomasz Napierala bhstmr->bhstmr_initiator_task_tag = initiator_task_tag; 21717a03d007SEdward Tomasz Napierala bhstmr->bhstmr_referenced_task_tag = aio->io_initiator_task_tag; 21727a03d007SEdward Tomasz Napierala 2173aa75114cSAlexander Motin iscsi_pdu_queue_locked(request); 2174aa75114cSAlexander Motin } 2175aa75114cSAlexander Motin 2176aa75114cSAlexander Motin static void 2177009ea47eSEdward Tomasz Napierala iscsi_action_scsiio(struct iscsi_session *is, union ccb *ccb) 2178009ea47eSEdward Tomasz Napierala { 2179009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 2180009ea47eSEdward Tomasz Napierala struct iscsi_bhs_scsi_command *bhssc; 2181009ea47eSEdward Tomasz Napierala struct ccb_scsiio *csio; 2182aa75114cSAlexander Motin struct iscsi_outstanding *io; 2183009ea47eSEdward Tomasz Napierala size_t len; 21847a03d007SEdward Tomasz Napierala uint32_t initiator_task_tag; 2185009ea47eSEdward Tomasz Napierala int error; 2186009ea47eSEdward Tomasz Napierala 2187009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 2188009ea47eSEdward Tomasz Napierala 2189009ea47eSEdward Tomasz Napierala #if 0 2190009ea47eSEdward Tomasz Napierala KASSERT(is->is_login_phase == false, ("%s called during Login Phase", __func__)); 2191009ea47eSEdward Tomasz Napierala #else 2192009ea47eSEdward Tomasz Napierala if (is->is_login_phase) { 2193009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "called during login phase"); 2194009ea47eSEdward Tomasz Napierala if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 2195009ea47eSEdward Tomasz Napierala xpt_freeze_devq(ccb->ccb_h.path, 1); 2196009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 2197009ea47eSEdward Tomasz Napierala } 2198009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_REQ_ABORTED | CAM_DEV_QFRZN; 2199009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2200009ea47eSEdward Tomasz Napierala return; 2201009ea47eSEdward Tomasz Napierala } 2202009ea47eSEdward Tomasz Napierala #endif 2203009ea47eSEdward Tomasz Napierala 2204d2d52b00SEdward Tomasz Napierala request = icl_pdu_new(is->is_conn, M_NOWAIT); 2205009ea47eSEdward Tomasz Napierala if (request == NULL) { 2206009ea47eSEdward Tomasz Napierala if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 2207009ea47eSEdward Tomasz Napierala xpt_freeze_devq(ccb->ccb_h.path, 1); 2208009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 2209009ea47eSEdward Tomasz Napierala } 2210009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_RESRC_UNAVAIL | CAM_DEV_QFRZN; 2211009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2212009ea47eSEdward Tomasz Napierala return; 2213009ea47eSEdward Tomasz Napierala } 2214009ea47eSEdward Tomasz Napierala 22157a03d007SEdward Tomasz Napierala initiator_task_tag = is->is_initiator_task_tag++; 2216604c023fSEdward Tomasz Napierala io = iscsi_outstanding_add(is, request, ccb, &initiator_task_tag); 22177a03d007SEdward Tomasz Napierala if (io == NULL) { 22187a03d007SEdward Tomasz Napierala icl_pdu_free(request); 22197a03d007SEdward Tomasz Napierala if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 22207a03d007SEdward Tomasz Napierala xpt_freeze_devq(ccb->ccb_h.path, 1); 22217a03d007SEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 22227a03d007SEdward Tomasz Napierala } 22237a03d007SEdward Tomasz Napierala ccb->ccb_h.status = CAM_RESRC_UNAVAIL | CAM_DEV_QFRZN; 22247a03d007SEdward Tomasz Napierala xpt_done(ccb); 22257a03d007SEdward Tomasz Napierala return; 22267a03d007SEdward Tomasz Napierala } 22277a03d007SEdward Tomasz Napierala 2228009ea47eSEdward Tomasz Napierala csio = &ccb->csio; 2229009ea47eSEdward Tomasz Napierala bhssc = (struct iscsi_bhs_scsi_command *)request->ip_bhs; 2230009ea47eSEdward Tomasz Napierala bhssc->bhssc_opcode = ISCSI_BHS_OPCODE_SCSI_COMMAND; 2231009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_F; 2232009ea47eSEdward Tomasz Napierala switch (csio->ccb_h.flags & CAM_DIR_MASK) { 2233009ea47eSEdward Tomasz Napierala case CAM_DIR_IN: 2234009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_R; 2235009ea47eSEdward Tomasz Napierala break; 2236009ea47eSEdward Tomasz Napierala case CAM_DIR_OUT: 2237009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_W; 2238009ea47eSEdward Tomasz Napierala break; 2239009ea47eSEdward Tomasz Napierala } 2240009ea47eSEdward Tomasz Napierala 2241462cf3baSAlexander Motin if ((ccb->ccb_h.flags & CAM_TAG_ACTION_VALID) != 0) { 2242009ea47eSEdward Tomasz Napierala switch (csio->tag_action) { 2243009ea47eSEdward Tomasz Napierala case MSG_HEAD_OF_Q_TAG: 2244009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_HOQ; 2245009ea47eSEdward Tomasz Napierala break; 2246009ea47eSEdward Tomasz Napierala case MSG_ORDERED_Q_TAG: 2247009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_ORDERED; 2248009ea47eSEdward Tomasz Napierala break; 2249009ea47eSEdward Tomasz Napierala case MSG_ACA_TASK: 2250009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_ACA; 2251009ea47eSEdward Tomasz Napierala break; 2252009ea47eSEdward Tomasz Napierala case MSG_SIMPLE_Q_TAG: 2253009ea47eSEdward Tomasz Napierala default: 2254009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_SIMPLE; 2255009ea47eSEdward Tomasz Napierala break; 2256009ea47eSEdward Tomasz Napierala } 2257462cf3baSAlexander Motin } else 2258462cf3baSAlexander Motin bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_UNTAGGED; 2259009ea47eSEdward Tomasz Napierala 2260a9f2f291SEdward Tomasz Napierala bhssc->bhssc_lun = htobe64(CAM_EXTLUN_BYTE_SWIZZLE(ccb->ccb_h.target_lun)); 22617a03d007SEdward Tomasz Napierala bhssc->bhssc_initiator_task_tag = initiator_task_tag; 2262009ea47eSEdward Tomasz Napierala bhssc->bhssc_expected_data_transfer_length = htonl(csio->dxfer_len); 2263009ea47eSEdward Tomasz Napierala KASSERT(csio->cdb_len <= sizeof(bhssc->bhssc_cdb), 2264009ea47eSEdward Tomasz Napierala ("unsupported CDB size %zd", (size_t)csio->cdb_len)); 2265009ea47eSEdward Tomasz Napierala 2266009ea47eSEdward Tomasz Napierala if (csio->ccb_h.flags & CAM_CDB_POINTER) 2267009ea47eSEdward Tomasz Napierala memcpy(&bhssc->bhssc_cdb, csio->cdb_io.cdb_ptr, csio->cdb_len); 2268009ea47eSEdward Tomasz Napierala else 2269009ea47eSEdward Tomasz Napierala memcpy(&bhssc->bhssc_cdb, csio->cdb_io.cdb_bytes, csio->cdb_len); 2270009ea47eSEdward Tomasz Napierala 2271009ea47eSEdward Tomasz Napierala if (is->is_immediate_data && 2272009ea47eSEdward Tomasz Napierala (csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT) { 2273009ea47eSEdward Tomasz Napierala len = csio->dxfer_len; 2274009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "adding %zd of immediate data", len); 2275009ea47eSEdward Tomasz Napierala if (len > is->is_first_burst_length) { 227697b84d34SNavdeep Parhar ISCSI_SESSION_DEBUG(is, "len %zd -> %d", len, is->is_first_burst_length); 2277009ea47eSEdward Tomasz Napierala len = is->is_first_burst_length; 2278009ea47eSEdward Tomasz Napierala } 227997b84d34SNavdeep Parhar if (len > is->is_max_send_data_segment_length) { 228097b84d34SNavdeep Parhar ISCSI_SESSION_DEBUG(is, "len %zd -> %d", len, 228197b84d34SNavdeep Parhar is->is_max_send_data_segment_length); 228297b84d34SNavdeep Parhar len = is->is_max_send_data_segment_length; 22833f9e1172SAlexander Motin } 2284009ea47eSEdward Tomasz Napierala 2285009ea47eSEdward Tomasz Napierala error = icl_pdu_append_data(request, csio->data_ptr, len, M_NOWAIT); 2286009ea47eSEdward Tomasz Napierala if (error != 0) { 2287938bcb04SEdward Tomasz Napierala iscsi_outstanding_remove(is, io); 2288009ea47eSEdward Tomasz Napierala icl_pdu_free(request); 2289009ea47eSEdward Tomasz Napierala if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 2290009ea47eSEdward Tomasz Napierala xpt_freeze_devq(ccb->ccb_h.path, 1); 2291009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 2292009ea47eSEdward Tomasz Napierala } 2293009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_RESRC_UNAVAIL | CAM_DEV_QFRZN; 2294009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2295009ea47eSEdward Tomasz Napierala return; 2296009ea47eSEdward Tomasz Napierala } 2297009ea47eSEdward Tomasz Napierala } 2298009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(request); 2299009ea47eSEdward Tomasz Napierala } 2300009ea47eSEdward Tomasz Napierala 2301009ea47eSEdward Tomasz Napierala static void 2302009ea47eSEdward Tomasz Napierala iscsi_action(struct cam_sim *sim, union ccb *ccb) 2303009ea47eSEdward Tomasz Napierala { 2304009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 2305009ea47eSEdward Tomasz Napierala 2306009ea47eSEdward Tomasz Napierala is = cam_sim_softc(sim); 2307009ea47eSEdward Tomasz Napierala 2308009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 2309009ea47eSEdward Tomasz Napierala 2310f1f12e40SEdward Tomasz Napierala if (is->is_terminating || 2311f1f12e40SEdward Tomasz Napierala (is->is_connected == false && fail_on_disconnection)) { 2312009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_DEV_NOT_THERE; 2313009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2314009ea47eSEdward Tomasz Napierala return; 2315009ea47eSEdward Tomasz Napierala } 2316009ea47eSEdward Tomasz Napierala 2317009ea47eSEdward Tomasz Napierala switch (ccb->ccb_h.func_code) { 2318009ea47eSEdward Tomasz Napierala case XPT_PATH_INQ: 2319009ea47eSEdward Tomasz Napierala { 2320009ea47eSEdward Tomasz Napierala struct ccb_pathinq *cpi = &ccb->cpi; 2321009ea47eSEdward Tomasz Napierala 2322009ea47eSEdward Tomasz Napierala cpi->version_num = 1; 2323009ea47eSEdward Tomasz Napierala cpi->hba_inquiry = PI_TAG_ABLE; 2324009ea47eSEdward Tomasz Napierala cpi->target_sprt = 0; 2325a9f2f291SEdward Tomasz Napierala cpi->hba_misc = PIM_EXTLUNS; 23267deb68abSEdward Tomasz Napierala /* 23277deb68abSEdward Tomasz Napierala * XXX: It shouldn't ever be NULL; this could be turned 23287deb68abSEdward Tomasz Napierala * into a KASSERT eventually. 23297deb68abSEdward Tomasz Napierala */ 23307deb68abSEdward Tomasz Napierala if (is->is_conn == NULL) 23317deb68abSEdward Tomasz Napierala ISCSI_WARN("NULL conn"); 23327deb68abSEdward Tomasz Napierala else if (is->is_conn->ic_unmapped) 23337deb68abSEdward Tomasz Napierala cpi->hba_misc |= PIM_UNMAPPED; 2334009ea47eSEdward Tomasz Napierala cpi->hba_eng_cnt = 0; 2335009ea47eSEdward Tomasz Napierala cpi->max_target = 0; 233617cf3eb1SEdward Tomasz Napierala /* 233717cf3eb1SEdward Tomasz Napierala * Note that the variable below is only relevant for targets 233817cf3eb1SEdward Tomasz Napierala * that don't claim compliance with anything above SPC2, which 233917cf3eb1SEdward Tomasz Napierala * means they don't support REPORT_LUNS. 234017cf3eb1SEdward Tomasz Napierala */ 234117cf3eb1SEdward Tomasz Napierala cpi->max_lun = 255; 2342a9f2f291SEdward Tomasz Napierala cpi->initiator_id = ~0; 23437843bd03SEdward Tomasz Napierala strlcpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); 23447843bd03SEdward Tomasz Napierala strlcpy(cpi->hba_vid, "iSCSI", HBA_IDLEN); 23457843bd03SEdward Tomasz Napierala strlcpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); 2346009ea47eSEdward Tomasz Napierala cpi->unit_number = cam_sim_unit(sim); 2347009ea47eSEdward Tomasz Napierala cpi->bus_id = cam_sim_bus(sim); 2348009ea47eSEdward Tomasz Napierala cpi->base_transfer_speed = 150000; /* XXX */ 2349009ea47eSEdward Tomasz Napierala cpi->transport = XPORT_ISCSI; 2350009ea47eSEdward Tomasz Napierala cpi->transport_version = 0; 2351009ea47eSEdward Tomasz Napierala cpi->protocol = PROTO_SCSI; 2352009ea47eSEdward Tomasz Napierala cpi->protocol_version = SCSI_REV_SPC3; 2353009ea47eSEdward Tomasz Napierala cpi->maxio = MAXPHYS; 2354009ea47eSEdward Tomasz Napierala cpi->ccb_h.status = CAM_REQ_CMP; 2355009ea47eSEdward Tomasz Napierala break; 2356009ea47eSEdward Tomasz Napierala } 2357462cf3baSAlexander Motin case XPT_GET_TRAN_SETTINGS: 2358462cf3baSAlexander Motin { 2359462cf3baSAlexander Motin struct ccb_trans_settings *cts; 2360462cf3baSAlexander Motin struct ccb_trans_settings_scsi *scsi; 2361462cf3baSAlexander Motin 2362462cf3baSAlexander Motin cts = &ccb->cts; 2363462cf3baSAlexander Motin scsi = &cts->proto_specific.scsi; 2364462cf3baSAlexander Motin 2365462cf3baSAlexander Motin cts->protocol = PROTO_SCSI; 2366462cf3baSAlexander Motin cts->protocol_version = SCSI_REV_SPC3; 2367462cf3baSAlexander Motin cts->transport = XPORT_ISCSI; 2368462cf3baSAlexander Motin cts->transport_version = 0; 2369462cf3baSAlexander Motin scsi->valid = CTS_SCSI_VALID_TQ; 2370462cf3baSAlexander Motin scsi->flags = CTS_SCSI_FLAGS_TAG_ENB; 2371462cf3baSAlexander Motin cts->ccb_h.status = CAM_REQ_CMP; 2372462cf3baSAlexander Motin break; 2373462cf3baSAlexander Motin } 2374009ea47eSEdward Tomasz Napierala case XPT_CALC_GEOMETRY: 2375009ea47eSEdward Tomasz Napierala cam_calc_geometry(&ccb->ccg, /*extended*/1); 2376009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_REQ_CMP; 2377009ea47eSEdward Tomasz Napierala break; 2378009ea47eSEdward Tomasz Napierala #if 0 2379009ea47eSEdward Tomasz Napierala /* 2380009ea47eSEdward Tomasz Napierala * XXX: What's the point? 2381009ea47eSEdward Tomasz Napierala */ 2382009ea47eSEdward Tomasz Napierala case XPT_RESET_BUS: 2383009ea47eSEdward Tomasz Napierala case XPT_TERM_IO: 2384009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "faking success for reset, abort, or term_io"); 2385009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_REQ_CMP; 2386009ea47eSEdward Tomasz Napierala break; 2387009ea47eSEdward Tomasz Napierala #endif 2388aa75114cSAlexander Motin case XPT_ABORT: 2389aa75114cSAlexander Motin iscsi_action_abort(is, ccb); 2390aa75114cSAlexander Motin return; 2391009ea47eSEdward Tomasz Napierala case XPT_SCSI_IO: 2392009ea47eSEdward Tomasz Napierala iscsi_action_scsiio(is, ccb); 2393009ea47eSEdward Tomasz Napierala return; 2394009ea47eSEdward Tomasz Napierala default: 2395009ea47eSEdward Tomasz Napierala #if 0 2396009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "got unsupported code 0x%x", ccb->ccb_h.func_code); 2397009ea47eSEdward Tomasz Napierala #endif 2398009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_FUNC_NOTAVAIL; 2399009ea47eSEdward Tomasz Napierala break; 2400009ea47eSEdward Tomasz Napierala } 2401009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2402009ea47eSEdward Tomasz Napierala } 2403009ea47eSEdward Tomasz Napierala 2404009ea47eSEdward Tomasz Napierala static void 2405009ea47eSEdward Tomasz Napierala iscsi_poll(struct cam_sim *sim) 2406009ea47eSEdward Tomasz Napierala { 2407009ea47eSEdward Tomasz Napierala 2408009ea47eSEdward Tomasz Napierala KASSERT(0, ("%s: you're not supposed to be here", __func__)); 2409009ea47eSEdward Tomasz Napierala } 2410009ea47eSEdward Tomasz Napierala 2411009ea47eSEdward Tomasz Napierala static void 2412481b36c6SSteven Hartland iscsi_terminate_sessions(struct iscsi_softc *sc) 2413009ea47eSEdward Tomasz Napierala { 2414009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 2415009ea47eSEdward Tomasz Napierala 2416481b36c6SSteven Hartland sx_slock(&sc->sc_lock); 2417481b36c6SSteven Hartland TAILQ_FOREACH(is, &sc->sc_sessions, is_next) 2418481b36c6SSteven Hartland iscsi_session_terminate(is); 2419481b36c6SSteven Hartland while(!TAILQ_EMPTY(&sc->sc_sessions)) { 2420481b36c6SSteven Hartland ISCSI_DEBUG("waiting for sessions to terminate"); 2421481b36c6SSteven Hartland cv_wait(&sc->sc_cv, &sc->sc_lock); 2422481b36c6SSteven Hartland } 2423481b36c6SSteven Hartland ISCSI_DEBUG("all sessions terminated"); 2424481b36c6SSteven Hartland sx_sunlock(&sc->sc_lock); 2425481b36c6SSteven Hartland } 2426481b36c6SSteven Hartland 2427481b36c6SSteven Hartland static void 2428481b36c6SSteven Hartland iscsi_shutdown_pre(struct iscsi_softc *sc) 2429481b36c6SSteven Hartland { 2430481b36c6SSteven Hartland struct iscsi_session *is; 2431481b36c6SSteven Hartland 2432481b36c6SSteven Hartland if (!fail_on_shutdown) 2433481b36c6SSteven Hartland return; 2434009ea47eSEdward Tomasz Napierala 2435e553ca49SEdward Tomasz Napierala /* 2436e553ca49SEdward Tomasz Napierala * If we have any sessions waiting for reconnection, request 2437e553ca49SEdward Tomasz Napierala * maintenance thread to fail them immediately instead of waiting 2438e553ca49SEdward Tomasz Napierala * for reconnect timeout. 2439481b36c6SSteven Hartland * 2440481b36c6SSteven Hartland * This prevents LUNs with mounted filesystems that are supported 2441481b36c6SSteven Hartland * by disconnected iSCSI sessions from hanging, however it will 2442481b36c6SSteven Hartland * fail all queued BIOs. 2443e553ca49SEdward Tomasz Napierala */ 2444481b36c6SSteven Hartland ISCSI_DEBUG("forcing failing all disconnected sessions due to shutdown"); 2445481b36c6SSteven Hartland 2446481b36c6SSteven Hartland fail_on_disconnection = 1; 2447481b36c6SSteven Hartland 2448009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 2449e553ca49SEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 2450e553ca49SEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 2451481b36c6SSteven Hartland if (!is->is_connected) { 2452481b36c6SSteven Hartland ISCSI_SESSION_DEBUG(is, "force failing disconnected session early"); 2453e553ca49SEdward Tomasz Napierala iscsi_session_reconnect(is); 2454481b36c6SSteven Hartland } 2455e553ca49SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 2456e553ca49SEdward Tomasz Napierala } 2457009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 2458009ea47eSEdward Tomasz Napierala } 2459009ea47eSEdward Tomasz Napierala 2460481b36c6SSteven Hartland static void 2461481b36c6SSteven Hartland iscsi_shutdown_post(struct iscsi_softc *sc) 2462481b36c6SSteven Hartland { 2463481b36c6SSteven Hartland 2464481b36c6SSteven Hartland ISCSI_DEBUG("removing all sessions due to shutdown"); 2465481b36c6SSteven Hartland iscsi_terminate_sessions(sc); 2466481b36c6SSteven Hartland } 2467481b36c6SSteven Hartland 2468009ea47eSEdward Tomasz Napierala static int 2469009ea47eSEdward Tomasz Napierala iscsi_load(void) 2470009ea47eSEdward Tomasz Napierala { 2471009ea47eSEdward Tomasz Napierala int error; 2472009ea47eSEdward Tomasz Napierala 2473009ea47eSEdward Tomasz Napierala sc = malloc(sizeof(*sc), M_ISCSI, M_ZERO | M_WAITOK); 2474009ea47eSEdward Tomasz Napierala sx_init(&sc->sc_lock, "iscsi"); 2475009ea47eSEdward Tomasz Napierala TAILQ_INIT(&sc->sc_sessions); 2476009ea47eSEdward Tomasz Napierala cv_init(&sc->sc_cv, "iscsi_cv"); 2477009ea47eSEdward Tomasz Napierala 2478009ea47eSEdward Tomasz Napierala iscsi_outstanding_zone = uma_zcreate("iscsi_outstanding", 2479009ea47eSEdward Tomasz Napierala sizeof(struct iscsi_outstanding), NULL, NULL, NULL, NULL, 2480c28c09c1SEdward Tomasz Napierala UMA_ALIGN_PTR, 0); 2481009ea47eSEdward Tomasz Napierala 2482009ea47eSEdward Tomasz Napierala error = make_dev_p(MAKEDEV_CHECKNAME, &sc->sc_cdev, &iscsi_cdevsw, 2483009ea47eSEdward Tomasz Napierala NULL, UID_ROOT, GID_WHEEL, 0600, "iscsi"); 2484009ea47eSEdward Tomasz Napierala if (error != 0) { 2485009ea47eSEdward Tomasz Napierala ISCSI_WARN("failed to create device node, error %d", error); 2486009ea47eSEdward Tomasz Napierala return (error); 2487009ea47eSEdward Tomasz Napierala } 2488009ea47eSEdward Tomasz Napierala sc->sc_cdev->si_drv1 = sc; 2489009ea47eSEdward Tomasz Napierala 2490481b36c6SSteven Hartland sc->sc_shutdown_pre_eh = EVENTHANDLER_REGISTER(shutdown_pre_sync, 2491481b36c6SSteven Hartland iscsi_shutdown_pre, sc, SHUTDOWN_PRI_FIRST); 2492481b36c6SSteven Hartland /* 2493481b36c6SSteven Hartland * shutdown_post_sync needs to run after filesystem shutdown and before 2494481b36c6SSteven Hartland * CAM shutdown - otherwise when rebooting with an iSCSI session that is 2495481b36c6SSteven Hartland * disconnected but has outstanding requests, dashutdown() will hang on 2496481b36c6SSteven Hartland * cam_periph_runccb(). 2497481b36c6SSteven Hartland */ 2498481b36c6SSteven Hartland sc->sc_shutdown_post_eh = EVENTHANDLER_REGISTER(shutdown_post_sync, 2499481b36c6SSteven Hartland iscsi_shutdown_post, sc, SHUTDOWN_PRI_DEFAULT - 1); 2500009ea47eSEdward Tomasz Napierala 2501009ea47eSEdward Tomasz Napierala return (0); 2502009ea47eSEdward Tomasz Napierala } 2503009ea47eSEdward Tomasz Napierala 2504009ea47eSEdward Tomasz Napierala static int 2505009ea47eSEdward Tomasz Napierala iscsi_unload(void) 2506009ea47eSEdward Tomasz Napierala { 2507009ea47eSEdward Tomasz Napierala 2508a667cf73SEdward Tomasz Napierala if (sc->sc_cdev != NULL) { 2509009ea47eSEdward Tomasz Napierala ISCSI_DEBUG("removing device node"); 2510009ea47eSEdward Tomasz Napierala destroy_dev(sc->sc_cdev); 2511009ea47eSEdward Tomasz Napierala ISCSI_DEBUG("device node removed"); 2512a667cf73SEdward Tomasz Napierala } 2513009ea47eSEdward Tomasz Napierala 2514481b36c6SSteven Hartland if (sc->sc_shutdown_pre_eh != NULL) 2515481b36c6SSteven Hartland EVENTHANDLER_DEREGISTER(shutdown_pre_sync, sc->sc_shutdown_pre_eh); 2516481b36c6SSteven Hartland if (sc->sc_shutdown_post_eh != NULL) 2517481b36c6SSteven Hartland EVENTHANDLER_DEREGISTER(shutdown_post_sync, sc->sc_shutdown_post_eh); 2518009ea47eSEdward Tomasz Napierala 2519481b36c6SSteven Hartland iscsi_terminate_sessions(sc); 2520009ea47eSEdward Tomasz Napierala 2521009ea47eSEdward Tomasz Napierala uma_zdestroy(iscsi_outstanding_zone); 2522009ea47eSEdward Tomasz Napierala sx_destroy(&sc->sc_lock); 2523009ea47eSEdward Tomasz Napierala cv_destroy(&sc->sc_cv); 2524009ea47eSEdward Tomasz Napierala free(sc, M_ISCSI); 2525009ea47eSEdward Tomasz Napierala return (0); 2526009ea47eSEdward Tomasz Napierala } 2527009ea47eSEdward Tomasz Napierala 2528009ea47eSEdward Tomasz Napierala static int 2529009ea47eSEdward Tomasz Napierala iscsi_quiesce(void) 2530009ea47eSEdward Tomasz Napierala { 2531009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 2532009ea47eSEdward Tomasz Napierala if (!TAILQ_EMPTY(&sc->sc_sessions)) { 2533009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 2534009ea47eSEdward Tomasz Napierala return (EBUSY); 2535009ea47eSEdward Tomasz Napierala } 2536009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 2537009ea47eSEdward Tomasz Napierala return (0); 2538009ea47eSEdward Tomasz Napierala } 2539009ea47eSEdward Tomasz Napierala 2540009ea47eSEdward Tomasz Napierala static int 2541009ea47eSEdward Tomasz Napierala iscsi_modevent(module_t mod, int what, void *arg) 2542009ea47eSEdward Tomasz Napierala { 2543009ea47eSEdward Tomasz Napierala int error; 2544009ea47eSEdward Tomasz Napierala 2545009ea47eSEdward Tomasz Napierala switch (what) { 2546009ea47eSEdward Tomasz Napierala case MOD_LOAD: 2547009ea47eSEdward Tomasz Napierala error = iscsi_load(); 2548009ea47eSEdward Tomasz Napierala break; 2549009ea47eSEdward Tomasz Napierala case MOD_UNLOAD: 2550009ea47eSEdward Tomasz Napierala error = iscsi_unload(); 2551009ea47eSEdward Tomasz Napierala break; 2552009ea47eSEdward Tomasz Napierala case MOD_QUIESCE: 2553009ea47eSEdward Tomasz Napierala error = iscsi_quiesce(); 2554009ea47eSEdward Tomasz Napierala break; 2555009ea47eSEdward Tomasz Napierala default: 2556009ea47eSEdward Tomasz Napierala error = EINVAL; 2557009ea47eSEdward Tomasz Napierala break; 2558009ea47eSEdward Tomasz Napierala } 2559009ea47eSEdward Tomasz Napierala return (error); 2560009ea47eSEdward Tomasz Napierala } 2561009ea47eSEdward Tomasz Napierala 2562009ea47eSEdward Tomasz Napierala moduledata_t iscsi_data = { 2563009ea47eSEdward Tomasz Napierala "iscsi", 2564009ea47eSEdward Tomasz Napierala iscsi_modevent, 2565009ea47eSEdward Tomasz Napierala 0 2566009ea47eSEdward Tomasz Napierala }; 2567009ea47eSEdward Tomasz Napierala 2568009ea47eSEdward Tomasz Napierala DECLARE_MODULE(iscsi, iscsi_data, SI_SUB_DRIVERS, SI_ORDER_MIDDLE); 2569009ea47eSEdward Tomasz Napierala MODULE_DEPEND(iscsi, cam, 1, 1, 1); 2570009ea47eSEdward Tomasz Napierala MODULE_DEPEND(iscsi, icl, 1, 1, 1); 2571