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> 46009ea47eSEdward Tomasz Napierala #include <sys/sysctl.h> 47009ea47eSEdward Tomasz Napierala #include <sys/systm.h> 48009ea47eSEdward Tomasz Napierala #include <sys/sx.h> 49009ea47eSEdward Tomasz Napierala #include <vm/uma.h> 50009ea47eSEdward Tomasz Napierala 51009ea47eSEdward Tomasz Napierala #include <cam/cam.h> 52009ea47eSEdward Tomasz Napierala #include <cam/cam_ccb.h> 53009ea47eSEdward Tomasz Napierala #include <cam/cam_xpt.h> 54009ea47eSEdward Tomasz Napierala #include <cam/cam_debug.h> 55009ea47eSEdward Tomasz Napierala #include <cam/cam_sim.h> 56009ea47eSEdward Tomasz Napierala #include <cam/cam_xpt_sim.h> 57009ea47eSEdward Tomasz Napierala #include <cam/cam_xpt_periph.h> 58009ea47eSEdward Tomasz Napierala #include <cam/cam_periph.h> 59009ea47eSEdward Tomasz Napierala #include <cam/scsi/scsi_all.h> 60009ea47eSEdward Tomasz Napierala #include <cam/scsi/scsi_message.h> 61009ea47eSEdward Tomasz Napierala 62ddc5fd90SEdward Tomasz Napierala #include <dev/iscsi/icl.h> 63321b17ecSEdward Tomasz Napierala #include <dev/iscsi/icl_wrappers.h> 64ddc5fd90SEdward Tomasz Napierala #include <dev/iscsi/iscsi_ioctl.h> 65ddc5fd90SEdward Tomasz Napierala #include <dev/iscsi/iscsi_proto.h> 66ddc5fd90SEdward Tomasz Napierala #include <dev/iscsi/iscsi.h> 67009ea47eSEdward Tomasz Napierala 68009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 69009ea47eSEdward Tomasz Napierala #include <sys/socketvar.h> 70009ea47eSEdward Tomasz Napierala #endif 71009ea47eSEdward Tomasz Napierala 722ebde326SEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 732ebde326SEdward Tomasz Napierala FEATURE(iscsi_kernel_proxy, "iSCSI initiator built with ICL_KERNEL_PROXY"); 742ebde326SEdward Tomasz Napierala #endif 752ebde326SEdward Tomasz Napierala 76009ea47eSEdward Tomasz Napierala /* 77009ea47eSEdward Tomasz Napierala * XXX: This is global so the iscsi_unload() can access it. 78009ea47eSEdward Tomasz Napierala * Think about how to do this properly. 79009ea47eSEdward Tomasz Napierala */ 80009ea47eSEdward Tomasz Napierala static struct iscsi_softc *sc; 81009ea47eSEdward Tomasz Napierala 82009ea47eSEdward Tomasz Napierala SYSCTL_NODE(_kern, OID_AUTO, iscsi, CTLFLAG_RD, 0, "iSCSI initiator"); 83009ea47eSEdward Tomasz Napierala static int debug = 1; 84605a34b0SEdward Tomasz Napierala SYSCTL_INT(_kern_iscsi, OID_AUTO, debug, CTLFLAG_RWTUN, 851f6b2af2SAlexander Motin &debug, 0, "Enable debug messages"); 86009ea47eSEdward Tomasz Napierala static int ping_timeout = 5; 87605a34b0SEdward Tomasz Napierala SYSCTL_INT(_kern_iscsi, OID_AUTO, ping_timeout, CTLFLAG_RWTUN, &ping_timeout, 881f6b2af2SAlexander Motin 0, "Timeout for ping (NOP-Out) requests, in seconds"); 89009ea47eSEdward Tomasz Napierala static int iscsid_timeout = 60; 90605a34b0SEdward Tomasz Napierala SYSCTL_INT(_kern_iscsi, OID_AUTO, iscsid_timeout, CTLFLAG_RWTUN, &iscsid_timeout, 911f6b2af2SAlexander Motin 0, "Time to wait for iscsid(8) to handle reconnection, in seconds"); 92009ea47eSEdward Tomasz Napierala static int login_timeout = 60; 93605a34b0SEdward Tomasz Napierala SYSCTL_INT(_kern_iscsi, OID_AUTO, login_timeout, CTLFLAG_RWTUN, &login_timeout, 941f6b2af2SAlexander Motin 0, "Time to wait for iscsid(8) to finish Login Phase, in seconds"); 95009ea47eSEdward Tomasz Napierala static int maxtags = 255; 96605a34b0SEdward Tomasz Napierala SYSCTL_INT(_kern_iscsi, OID_AUTO, maxtags, CTLFLAG_RWTUN, &maxtags, 971f6b2af2SAlexander Motin 0, "Max number of IO requests queued"); 98f1f12e40SEdward Tomasz Napierala static int fail_on_disconnection = 0; 99f1f12e40SEdward Tomasz Napierala SYSCTL_INT(_kern_iscsi, OID_AUTO, fail_on_disconnection, CTLFLAG_RWTUN, 100f1f12e40SEdward Tomasz Napierala &fail_on_disconnection, 0, "Destroy CAM SIM on connection failure"); 101481b36c6SSteven Hartland static int fail_on_shutdown = 1; 102481b36c6SSteven Hartland SYSCTL_INT(_kern_iscsi, OID_AUTO, fail_on_shutdown, CTLFLAG_RWTUN, 103481b36c6SSteven Hartland &fail_on_shutdown, 0, "Fail disconnected sessions on shutdown"); 104009ea47eSEdward Tomasz Napierala 105009ea47eSEdward Tomasz Napierala static MALLOC_DEFINE(M_ISCSI, "iSCSI", "iSCSI initiator"); 106009ea47eSEdward Tomasz Napierala static uma_zone_t iscsi_outstanding_zone; 107009ea47eSEdward Tomasz Napierala 108009ea47eSEdward Tomasz Napierala #define CONN_SESSION(X) ((struct iscsi_session *)X->ic_prv0) 109009ea47eSEdward Tomasz Napierala #define PDU_SESSION(X) (CONN_SESSION(X->ip_conn)) 110009ea47eSEdward Tomasz Napierala 111009ea47eSEdward Tomasz Napierala #define ISCSI_DEBUG(X, ...) \ 112b1277ad1SEdward Tomasz Napierala do { \ 113b1277ad1SEdward Tomasz Napierala if (debug > 1) \ 114009ea47eSEdward Tomasz Napierala printf("%s: " X "\n", __func__, ## __VA_ARGS__);\ 115009ea47eSEdward Tomasz Napierala } while (0) 116009ea47eSEdward Tomasz Napierala 117009ea47eSEdward Tomasz Napierala #define ISCSI_WARN(X, ...) \ 118b1277ad1SEdward Tomasz Napierala do { \ 119009ea47eSEdward Tomasz Napierala if (debug > 0) { \ 120009ea47eSEdward Tomasz Napierala printf("WARNING: %s: " X "\n", \ 121009ea47eSEdward Tomasz Napierala __func__, ## __VA_ARGS__); \ 122b1277ad1SEdward Tomasz Napierala } \ 123009ea47eSEdward Tomasz Napierala } while (0) 124009ea47eSEdward Tomasz Napierala 125009ea47eSEdward Tomasz Napierala #define ISCSI_SESSION_DEBUG(S, X, ...) \ 126b1277ad1SEdward Tomasz Napierala do { \ 127009ea47eSEdward Tomasz Napierala if (debug > 1) { \ 128009ea47eSEdward Tomasz Napierala printf("%s: %s (%s): " X "\n", \ 129009ea47eSEdward Tomasz Napierala __func__, S->is_conf.isc_target_addr, \ 130009ea47eSEdward Tomasz Napierala S->is_conf.isc_target, ## __VA_ARGS__); \ 131b1277ad1SEdward Tomasz Napierala } \ 132009ea47eSEdward Tomasz Napierala } while (0) 133009ea47eSEdward Tomasz Napierala 134009ea47eSEdward Tomasz Napierala #define ISCSI_SESSION_WARN(S, X, ...) \ 135b1277ad1SEdward Tomasz Napierala do { \ 136009ea47eSEdward Tomasz Napierala if (debug > 0) { \ 137009ea47eSEdward Tomasz Napierala printf("WARNING: %s (%s): " X "\n", \ 138009ea47eSEdward Tomasz Napierala S->is_conf.isc_target_addr, \ 139009ea47eSEdward Tomasz Napierala S->is_conf.isc_target, ## __VA_ARGS__); \ 140b1277ad1SEdward Tomasz Napierala } \ 141009ea47eSEdward Tomasz Napierala } while (0) 142009ea47eSEdward Tomasz Napierala 143009ea47eSEdward Tomasz Napierala #define ISCSI_SESSION_LOCK(X) mtx_lock(&X->is_lock) 144009ea47eSEdward Tomasz Napierala #define ISCSI_SESSION_UNLOCK(X) mtx_unlock(&X->is_lock) 145009ea47eSEdward Tomasz Napierala #define ISCSI_SESSION_LOCK_ASSERT(X) mtx_assert(&X->is_lock, MA_OWNED) 146c215ad3aSAlexander Motin #define ISCSI_SESSION_LOCK_ASSERT_NOT(X) mtx_assert(&X->is_lock, MA_NOTOWNED) 147009ea47eSEdward Tomasz Napierala 148009ea47eSEdward Tomasz Napierala static int iscsi_ioctl(struct cdev *dev, u_long cmd, caddr_t arg, 149009ea47eSEdward Tomasz Napierala int mode, struct thread *td); 150009ea47eSEdward Tomasz Napierala 151009ea47eSEdward Tomasz Napierala static struct cdevsw iscsi_cdevsw = { 152009ea47eSEdward Tomasz Napierala .d_version = D_VERSION, 153009ea47eSEdward Tomasz Napierala .d_ioctl = iscsi_ioctl, 154009ea47eSEdward Tomasz Napierala .d_name = "iscsi", 155009ea47eSEdward Tomasz Napierala }; 156009ea47eSEdward Tomasz Napierala 157009ea47eSEdward Tomasz Napierala static void iscsi_pdu_queue_locked(struct icl_pdu *request); 158009ea47eSEdward Tomasz Napierala static void iscsi_pdu_queue(struct icl_pdu *request); 159009ea47eSEdward Tomasz Napierala static void iscsi_pdu_update_statsn(const struct icl_pdu *response); 160009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_nop_in(struct icl_pdu *response); 161009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_scsi_response(struct icl_pdu *response); 162aa75114cSAlexander Motin static void iscsi_pdu_handle_task_response(struct icl_pdu *response); 163009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_data_in(struct icl_pdu *response); 164009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_logout_response(struct icl_pdu *response); 165009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_r2t(struct icl_pdu *response); 166009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_async_message(struct icl_pdu *response); 167009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_reject(struct icl_pdu *response); 168009ea47eSEdward Tomasz Napierala static void iscsi_session_reconnect(struct iscsi_session *is); 169009ea47eSEdward Tomasz Napierala static void iscsi_session_terminate(struct iscsi_session *is); 170009ea47eSEdward Tomasz Napierala static void iscsi_action(struct cam_sim *sim, union ccb *ccb); 171009ea47eSEdward Tomasz Napierala static void iscsi_poll(struct cam_sim *sim); 172009ea47eSEdward Tomasz Napierala static struct iscsi_outstanding *iscsi_outstanding_find(struct iscsi_session *is, 173009ea47eSEdward Tomasz Napierala uint32_t initiator_task_tag); 174aa75114cSAlexander Motin static struct iscsi_outstanding *iscsi_outstanding_add(struct iscsi_session *is, 1757a03d007SEdward Tomasz Napierala union ccb *ccb, uint32_t *initiator_task_tagp); 176009ea47eSEdward Tomasz Napierala static void iscsi_outstanding_remove(struct iscsi_session *is, 177009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io); 178009ea47eSEdward Tomasz Napierala 179009ea47eSEdward Tomasz Napierala static bool 180009ea47eSEdward Tomasz Napierala iscsi_pdu_prepare(struct icl_pdu *request) 181009ea47eSEdward Tomasz Napierala { 182009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 183009ea47eSEdward Tomasz Napierala struct iscsi_bhs_scsi_command *bhssc; 184009ea47eSEdward Tomasz Napierala 185009ea47eSEdward Tomasz Napierala is = PDU_SESSION(request); 186009ea47eSEdward Tomasz Napierala 187009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 188009ea47eSEdward Tomasz Napierala 189009ea47eSEdward Tomasz Napierala /* 190009ea47eSEdward Tomasz Napierala * We're only using fields common for all the request 191009ea47eSEdward Tomasz Napierala * (initiator -> target) PDUs. 192009ea47eSEdward Tomasz Napierala */ 193009ea47eSEdward Tomasz Napierala bhssc = (struct iscsi_bhs_scsi_command *)request->ip_bhs; 194009ea47eSEdward Tomasz Napierala 195009ea47eSEdward Tomasz Napierala /* 196009ea47eSEdward Tomasz Napierala * Data-Out PDU does not contain CmdSN. 197009ea47eSEdward Tomasz Napierala */ 198009ea47eSEdward Tomasz Napierala if (bhssc->bhssc_opcode != ISCSI_BHS_OPCODE_SCSI_DATA_OUT) { 1992124e3b0SAlexander Motin if (ISCSI_SNGT(is->is_cmdsn, is->is_maxcmdsn) && 200009ea47eSEdward Tomasz Napierala (bhssc->bhssc_opcode & ISCSI_BHS_OPCODE_IMMEDIATE) == 0) { 201009ea47eSEdward Tomasz Napierala /* 202009ea47eSEdward Tomasz Napierala * Current MaxCmdSN prevents us from sending any more 203009ea47eSEdward Tomasz Napierala * SCSI Command PDUs to the target; postpone the PDU. 204009ea47eSEdward Tomasz Napierala * It will get resent by either iscsi_pdu_queue(), 205009ea47eSEdward Tomasz Napierala * or by maintenance thread. 206009ea47eSEdward Tomasz Napierala */ 207009ea47eSEdward Tomasz Napierala #if 0 2082124e3b0SAlexander Motin ISCSI_SESSION_DEBUG(is, "postponing send, CmdSN %u, " 2092124e3b0SAlexander Motin "ExpCmdSN %u, MaxCmdSN %u, opcode 0x%x", 2102124e3b0SAlexander Motin is->is_cmdsn, is->is_expcmdsn, is->is_maxcmdsn, 2112124e3b0SAlexander Motin bhssc->bhssc_opcode); 212009ea47eSEdward Tomasz Napierala #endif 213009ea47eSEdward Tomasz Napierala return (true); 214009ea47eSEdward Tomasz Napierala } 215009ea47eSEdward Tomasz Napierala bhssc->bhssc_cmdsn = htonl(is->is_cmdsn); 216009ea47eSEdward Tomasz Napierala if ((bhssc->bhssc_opcode & ISCSI_BHS_OPCODE_IMMEDIATE) == 0) 217009ea47eSEdward Tomasz Napierala is->is_cmdsn++; 218009ea47eSEdward Tomasz Napierala } 219009ea47eSEdward Tomasz Napierala bhssc->bhssc_expstatsn = htonl(is->is_statsn + 1); 220009ea47eSEdward Tomasz Napierala 221009ea47eSEdward Tomasz Napierala return (false); 222009ea47eSEdward Tomasz Napierala } 223009ea47eSEdward Tomasz Napierala 224009ea47eSEdward Tomasz Napierala static void 225009ea47eSEdward Tomasz Napierala iscsi_session_send_postponed(struct iscsi_session *is) 226009ea47eSEdward Tomasz Napierala { 227009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 228009ea47eSEdward Tomasz Napierala bool postpone; 229009ea47eSEdward Tomasz Napierala 230009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 231009ea47eSEdward Tomasz Napierala 23216c158a5SEdward Tomasz Napierala while (!STAILQ_EMPTY(&is->is_postponed)) { 23316c158a5SEdward Tomasz Napierala request = STAILQ_FIRST(&is->is_postponed); 234009ea47eSEdward Tomasz Napierala postpone = iscsi_pdu_prepare(request); 235009ea47eSEdward Tomasz Napierala if (postpone) 236009ea47eSEdward Tomasz Napierala break; 23716c158a5SEdward Tomasz Napierala STAILQ_REMOVE_HEAD(&is->is_postponed, ip_next); 238009ea47eSEdward Tomasz Napierala icl_pdu_queue(request); 239009ea47eSEdward Tomasz Napierala } 240009ea47eSEdward Tomasz Napierala } 241009ea47eSEdward Tomasz Napierala 242009ea47eSEdward Tomasz Napierala static void 243009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(struct icl_pdu *request) 244009ea47eSEdward Tomasz Napierala { 245009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 246009ea47eSEdward Tomasz Napierala bool postpone; 247009ea47eSEdward Tomasz Napierala 248009ea47eSEdward Tomasz Napierala is = PDU_SESSION(request); 249009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 250009ea47eSEdward Tomasz Napierala iscsi_session_send_postponed(is); 251009ea47eSEdward Tomasz Napierala postpone = iscsi_pdu_prepare(request); 252009ea47eSEdward Tomasz Napierala if (postpone) { 25316c158a5SEdward Tomasz Napierala STAILQ_INSERT_TAIL(&is->is_postponed, request, ip_next); 254009ea47eSEdward Tomasz Napierala return; 255009ea47eSEdward Tomasz Napierala } 256009ea47eSEdward Tomasz Napierala icl_pdu_queue(request); 257009ea47eSEdward Tomasz Napierala } 258009ea47eSEdward Tomasz Napierala 259009ea47eSEdward Tomasz Napierala static void 260009ea47eSEdward Tomasz Napierala iscsi_pdu_queue(struct icl_pdu *request) 261009ea47eSEdward Tomasz Napierala { 262009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 263009ea47eSEdward Tomasz Napierala 264009ea47eSEdward Tomasz Napierala is = PDU_SESSION(request); 265009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 266009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(request); 267009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 268009ea47eSEdward Tomasz Napierala } 269009ea47eSEdward Tomasz Napierala 270009ea47eSEdward Tomasz Napierala static void 271009ea47eSEdward Tomasz Napierala iscsi_session_logout(struct iscsi_session *is) 272009ea47eSEdward Tomasz Napierala { 273009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 274009ea47eSEdward Tomasz Napierala struct iscsi_bhs_logout_request *bhslr; 275009ea47eSEdward Tomasz Napierala 276d2d52b00SEdward Tomasz Napierala request = icl_pdu_new(is->is_conn, M_NOWAIT); 277009ea47eSEdward Tomasz Napierala if (request == NULL) 278009ea47eSEdward Tomasz Napierala return; 279009ea47eSEdward Tomasz Napierala 280009ea47eSEdward Tomasz Napierala bhslr = (struct iscsi_bhs_logout_request *)request->ip_bhs; 281009ea47eSEdward Tomasz Napierala bhslr->bhslr_opcode = ISCSI_BHS_OPCODE_LOGOUT_REQUEST; 282009ea47eSEdward Tomasz Napierala bhslr->bhslr_reason = BHSLR_REASON_CLOSE_SESSION; 283009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(request); 284009ea47eSEdward Tomasz Napierala } 285009ea47eSEdward Tomasz Napierala 286009ea47eSEdward Tomasz Napierala static void 287aa75114cSAlexander Motin iscsi_session_terminate_task(struct iscsi_session *is, 288aa75114cSAlexander Motin struct iscsi_outstanding *io, bool requeue) 289aa75114cSAlexander Motin { 290aa75114cSAlexander Motin 291*e204e2cdSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 292*e204e2cdSEdward Tomasz Napierala 293aa75114cSAlexander Motin if (io->io_ccb != NULL) { 294aa75114cSAlexander Motin io->io_ccb->ccb_h.status &= ~(CAM_SIM_QUEUED | CAM_STATUS_MASK); 295aa75114cSAlexander Motin if (requeue) 296aa75114cSAlexander Motin io->io_ccb->ccb_h.status |= CAM_REQUEUE_REQ; 297aa75114cSAlexander Motin else 298aa75114cSAlexander Motin io->io_ccb->ccb_h.status |= CAM_REQ_ABORTED; 299aa75114cSAlexander Motin if ((io->io_ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 300aa75114cSAlexander Motin io->io_ccb->ccb_h.status |= CAM_DEV_QFRZN; 301aa75114cSAlexander Motin xpt_freeze_devq(io->io_ccb->ccb_h.path, 1); 302aa75114cSAlexander Motin ISCSI_SESSION_DEBUG(is, "freezing devq"); 303aa75114cSAlexander Motin } 304aa75114cSAlexander Motin xpt_done(io->io_ccb); 305aa75114cSAlexander Motin } 306aa75114cSAlexander Motin iscsi_outstanding_remove(is, io); 307aa75114cSAlexander Motin } 308aa75114cSAlexander Motin 309aa75114cSAlexander Motin static void 310009ea47eSEdward Tomasz Napierala iscsi_session_terminate_tasks(struct iscsi_session *is, bool requeue) 311009ea47eSEdward Tomasz Napierala { 312009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io, *tmp; 313009ea47eSEdward Tomasz Napierala 314009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 315009ea47eSEdward Tomasz Napierala 316009ea47eSEdward Tomasz Napierala TAILQ_FOREACH_SAFE(io, &is->is_outstanding, io_next, tmp) { 317aa75114cSAlexander Motin iscsi_session_terminate_task(is, io, requeue); 318009ea47eSEdward Tomasz Napierala } 319009ea47eSEdward Tomasz Napierala } 320009ea47eSEdward Tomasz Napierala 321009ea47eSEdward Tomasz Napierala static void 322f1f12e40SEdward Tomasz Napierala iscsi_session_cleanup(struct iscsi_session *is, bool destroy_sim) 323009ea47eSEdward Tomasz Napierala { 324009ea47eSEdward Tomasz Napierala struct icl_pdu *pdu; 325009ea47eSEdward Tomasz Napierala 326f1f12e40SEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 327009ea47eSEdward Tomasz Napierala 328009ea47eSEdward Tomasz Napierala /* 329009ea47eSEdward Tomasz Napierala * Don't queue any new PDUs. 330009ea47eSEdward Tomasz Napierala */ 331009ea47eSEdward Tomasz Napierala if (is->is_sim != NULL && is->is_simq_frozen == false) { 332009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing"); 333009ea47eSEdward Tomasz Napierala xpt_freeze_simq(is->is_sim, 1); 334009ea47eSEdward Tomasz Napierala is->is_simq_frozen = true; 335009ea47eSEdward Tomasz Napierala } 336009ea47eSEdward Tomasz Napierala 337009ea47eSEdward Tomasz Napierala /* 338009ea47eSEdward Tomasz Napierala * Remove postponed PDUs. 339009ea47eSEdward Tomasz Napierala */ 34016c158a5SEdward Tomasz Napierala while (!STAILQ_EMPTY(&is->is_postponed)) { 34116c158a5SEdward Tomasz Napierala pdu = STAILQ_FIRST(&is->is_postponed); 34216c158a5SEdward Tomasz Napierala STAILQ_REMOVE_HEAD(&is->is_postponed, ip_next); 343009ea47eSEdward Tomasz Napierala icl_pdu_free(pdu); 344009ea47eSEdward Tomasz Napierala } 345009ea47eSEdward Tomasz Napierala 346f1f12e40SEdward Tomasz Napierala if (destroy_sim == false) { 347009ea47eSEdward Tomasz Napierala /* 348009ea47eSEdward Tomasz Napierala * Terminate SCSI tasks, asking CAM to requeue them. 349009ea47eSEdward Tomasz Napierala */ 350009ea47eSEdward Tomasz Napierala iscsi_session_terminate_tasks(is, true); 351f1f12e40SEdward Tomasz Napierala return; 352f1f12e40SEdward Tomasz Napierala } 353f1f12e40SEdward Tomasz Napierala 354f1f12e40SEdward Tomasz Napierala iscsi_session_terminate_tasks(is, false); 355f1f12e40SEdward Tomasz Napierala 356f1f12e40SEdward Tomasz Napierala if (is->is_sim == NULL) 357f1f12e40SEdward Tomasz Napierala return; 358f1f12e40SEdward Tomasz Napierala 359f1f12e40SEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "deregistering SIM"); 360f1f12e40SEdward Tomasz Napierala xpt_async(AC_LOST_DEVICE, is->is_path, NULL); 361f1f12e40SEdward Tomasz Napierala 362f1f12e40SEdward Tomasz Napierala if (is->is_simq_frozen) { 363f1f12e40SEdward Tomasz Napierala xpt_release_simq(is->is_sim, 1); 364f1f12e40SEdward Tomasz Napierala is->is_simq_frozen = false; 365f1f12e40SEdward Tomasz Napierala } 366f1f12e40SEdward Tomasz Napierala 367f1f12e40SEdward Tomasz Napierala xpt_free_path(is->is_path); 368f1f12e40SEdward Tomasz Napierala is->is_path = NULL; 369f1f12e40SEdward Tomasz Napierala xpt_bus_deregister(cam_sim_path(is->is_sim)); 370f1f12e40SEdward Tomasz Napierala cam_sim_free(is->is_sim, TRUE /*free_devq*/); 371f1f12e40SEdward Tomasz Napierala is->is_sim = NULL; 372f1f12e40SEdward Tomasz Napierala is->is_devq = NULL; 373f1f12e40SEdward Tomasz Napierala } 374f1f12e40SEdward Tomasz Napierala 375f1f12e40SEdward Tomasz Napierala static void 376f1f12e40SEdward Tomasz Napierala iscsi_maintenance_thread_reconnect(struct iscsi_session *is) 377f1f12e40SEdward Tomasz Napierala { 378f1f12e40SEdward Tomasz Napierala 379f1f12e40SEdward Tomasz Napierala icl_conn_close(is->is_conn); 380f1f12e40SEdward Tomasz Napierala 381f1f12e40SEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 382f1f12e40SEdward Tomasz Napierala 383f1f12e40SEdward Tomasz Napierala is->is_connected = false; 384f1f12e40SEdward Tomasz Napierala is->is_reconnecting = false; 385f1f12e40SEdward Tomasz Napierala is->is_login_phase = false; 386f1f12e40SEdward Tomasz Napierala 387f1f12e40SEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 388f1f12e40SEdward Tomasz Napierala if (is->is_login_pdu != NULL) { 389f1f12e40SEdward Tomasz Napierala icl_pdu_free(is->is_login_pdu); 390f1f12e40SEdward Tomasz Napierala is->is_login_pdu = NULL; 391f1f12e40SEdward Tomasz Napierala } 392f1f12e40SEdward Tomasz Napierala cv_signal(&is->is_login_cv); 393f1f12e40SEdward Tomasz Napierala #endif 394f1f12e40SEdward Tomasz Napierala 395f1f12e40SEdward Tomasz Napierala if (fail_on_disconnection) { 396f1f12e40SEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "connection failed, destroying devices"); 397f1f12e40SEdward Tomasz Napierala iscsi_session_cleanup(is, true); 398f1f12e40SEdward Tomasz Napierala } else { 399f1f12e40SEdward Tomasz Napierala iscsi_session_cleanup(is, false); 400f1f12e40SEdward Tomasz Napierala } 401009ea47eSEdward Tomasz Napierala 402009ea47eSEdward Tomasz Napierala KASSERT(TAILQ_EMPTY(&is->is_outstanding), 403009ea47eSEdward Tomasz Napierala ("destroying session with active tasks")); 40416c158a5SEdward Tomasz Napierala KASSERT(STAILQ_EMPTY(&is->is_postponed), 405009ea47eSEdward Tomasz Napierala ("destroying session with postponed PDUs")); 406009ea47eSEdward Tomasz Napierala 407009ea47eSEdward Tomasz Napierala /* 408009ea47eSEdward Tomasz Napierala * Request immediate reconnection from iscsid(8). 409009ea47eSEdward Tomasz Napierala */ 410009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "waking up iscsid(8)"); 411009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = true; 412009ea47eSEdward Tomasz Napierala strlcpy(is->is_reason, "Waiting for iscsid(8)", sizeof(is->is_reason)); 413009ea47eSEdward Tomasz Napierala is->is_timeout = 0; 414009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 415009ea47eSEdward Tomasz Napierala cv_signal(&is->is_softc->sc_cv); 416009ea47eSEdward Tomasz Napierala } 417009ea47eSEdward Tomasz Napierala 418009ea47eSEdward Tomasz Napierala static void 419009ea47eSEdward Tomasz Napierala iscsi_maintenance_thread_terminate(struct iscsi_session *is) 420009ea47eSEdward Tomasz Napierala { 421009ea47eSEdward Tomasz Napierala struct iscsi_softc *sc; 422009ea47eSEdward Tomasz Napierala 423009ea47eSEdward Tomasz Napierala sc = is->is_softc; 424009ea47eSEdward Tomasz Napierala sx_xlock(&sc->sc_lock); 425009ea47eSEdward Tomasz Napierala 426009ea47eSEdward Tomasz Napierala icl_conn_close(is->is_conn); 427674074daSEdward Tomasz Napierala callout_drain(&is->is_callout); 428009ea47eSEdward Tomasz Napierala 429009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 430009ea47eSEdward Tomasz Napierala 431009ea47eSEdward Tomasz Napierala KASSERT(is->is_terminating, ("is_terminating == false")); 432009ea47eSEdward Tomasz Napierala 433009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 434009ea47eSEdward Tomasz Napierala if (is->is_login_pdu != NULL) { 435009ea47eSEdward Tomasz Napierala icl_pdu_free(is->is_login_pdu); 436009ea47eSEdward Tomasz Napierala is->is_login_pdu = NULL; 437009ea47eSEdward Tomasz Napierala } 438009ea47eSEdward Tomasz Napierala cv_signal(&is->is_login_cv); 439009ea47eSEdward Tomasz Napierala #endif 440009ea47eSEdward Tomasz Napierala 441f1f12e40SEdward Tomasz Napierala iscsi_session_cleanup(is, true); 442009ea47eSEdward Tomasz Napierala 443009ea47eSEdward Tomasz Napierala KASSERT(TAILQ_EMPTY(&is->is_outstanding), 444009ea47eSEdward Tomasz Napierala ("destroying session with active tasks")); 44516c158a5SEdward Tomasz Napierala KASSERT(STAILQ_EMPTY(&is->is_postponed), 446009ea47eSEdward Tomasz Napierala ("destroying session with postponed PDUs")); 447009ea47eSEdward Tomasz Napierala 448009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 449009ea47eSEdward Tomasz Napierala 450009ea47eSEdward Tomasz Napierala icl_conn_free(is->is_conn); 451009ea47eSEdward Tomasz Napierala mtx_destroy(&is->is_lock); 452009ea47eSEdward Tomasz Napierala cv_destroy(&is->is_maintenance_cv); 453009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 454009ea47eSEdward Tomasz Napierala cv_destroy(&is->is_login_cv); 455009ea47eSEdward Tomasz Napierala #endif 456481b36c6SSteven Hartland TAILQ_REMOVE(&sc->sc_sessions, is, is_next); 457481b36c6SSteven Hartland sx_xunlock(&sc->sc_lock); 458481b36c6SSteven Hartland 459009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "terminated"); 460009ea47eSEdward Tomasz Napierala free(is, M_ISCSI); 461009ea47eSEdward Tomasz Napierala 462009ea47eSEdward Tomasz Napierala /* 463009ea47eSEdward Tomasz Napierala * The iscsi_unload() routine might be waiting. 464009ea47eSEdward Tomasz Napierala */ 465009ea47eSEdward Tomasz Napierala cv_signal(&sc->sc_cv); 466009ea47eSEdward Tomasz Napierala } 467009ea47eSEdward Tomasz Napierala 468009ea47eSEdward Tomasz Napierala static void 469009ea47eSEdward Tomasz Napierala iscsi_maintenance_thread(void *arg) 470009ea47eSEdward Tomasz Napierala { 471009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 472009ea47eSEdward Tomasz Napierala 473009ea47eSEdward Tomasz Napierala is = arg; 474009ea47eSEdward Tomasz Napierala 475009ea47eSEdward Tomasz Napierala for (;;) { 476009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 477009ea47eSEdward Tomasz Napierala if (is->is_reconnecting == false && 478009ea47eSEdward Tomasz Napierala is->is_terminating == false && 47916c158a5SEdward Tomasz Napierala STAILQ_EMPTY(&is->is_postponed)) 480009ea47eSEdward Tomasz Napierala cv_wait(&is->is_maintenance_cv, &is->is_lock); 481009ea47eSEdward Tomasz Napierala 482481b36c6SSteven Hartland /* Terminate supersedes reconnect. */ 483009ea47eSEdward Tomasz Napierala if (is->is_terminating) { 484009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 485009ea47eSEdward Tomasz Napierala iscsi_maintenance_thread_terminate(is); 486009ea47eSEdward Tomasz Napierala kthread_exit(); 487009ea47eSEdward Tomasz Napierala return; 488009ea47eSEdward Tomasz Napierala } 489009ea47eSEdward Tomasz Napierala 490481b36c6SSteven Hartland if (is->is_reconnecting) { 491481b36c6SSteven Hartland ISCSI_SESSION_UNLOCK(is); 492481b36c6SSteven Hartland iscsi_maintenance_thread_reconnect(is); 493481b36c6SSteven Hartland continue; 494481b36c6SSteven Hartland } 495481b36c6SSteven Hartland 496009ea47eSEdward Tomasz Napierala iscsi_session_send_postponed(is); 497009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 498009ea47eSEdward Tomasz Napierala } 499009ea47eSEdward Tomasz Napierala } 500009ea47eSEdward Tomasz Napierala 501009ea47eSEdward Tomasz Napierala static void 502009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(struct iscsi_session *is) 503009ea47eSEdward Tomasz Napierala { 504009ea47eSEdward Tomasz Napierala 505009ea47eSEdward Tomasz Napierala /* 506009ea47eSEdward Tomasz Napierala * XXX: We can't use locking here, because 507009ea47eSEdward Tomasz Napierala * it's being called from various contexts. 508009ea47eSEdward Tomasz Napierala * Hope it doesn't break anything. 509009ea47eSEdward Tomasz Napierala */ 510009ea47eSEdward Tomasz Napierala if (is->is_reconnecting) 511009ea47eSEdward Tomasz Napierala return; 512009ea47eSEdward Tomasz Napierala 513009ea47eSEdward Tomasz Napierala is->is_reconnecting = true; 514009ea47eSEdward Tomasz Napierala cv_signal(&is->is_maintenance_cv); 515009ea47eSEdward Tomasz Napierala } 516009ea47eSEdward Tomasz Napierala 517009ea47eSEdward Tomasz Napierala static void 518009ea47eSEdward Tomasz Napierala iscsi_session_terminate(struct iscsi_session *is) 519009ea47eSEdward Tomasz Napierala { 520674074daSEdward Tomasz Napierala 521009ea47eSEdward Tomasz Napierala if (is->is_terminating) 522009ea47eSEdward Tomasz Napierala return; 523009ea47eSEdward Tomasz Napierala 524009ea47eSEdward Tomasz Napierala is->is_terminating = true; 525009ea47eSEdward Tomasz Napierala 526009ea47eSEdward Tomasz Napierala #if 0 527009ea47eSEdward Tomasz Napierala iscsi_session_logout(is); 528009ea47eSEdward Tomasz Napierala #endif 529009ea47eSEdward Tomasz Napierala cv_signal(&is->is_maintenance_cv); 530009ea47eSEdward Tomasz Napierala } 531009ea47eSEdward Tomasz Napierala 532009ea47eSEdward Tomasz Napierala static void 533009ea47eSEdward Tomasz Napierala iscsi_callout(void *context) 534009ea47eSEdward Tomasz Napierala { 535009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 536009ea47eSEdward Tomasz Napierala struct iscsi_bhs_nop_out *bhsno; 537009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 538009ea47eSEdward Tomasz Napierala bool reconnect_needed = false; 539009ea47eSEdward Tomasz Napierala 540009ea47eSEdward Tomasz Napierala is = context; 541009ea47eSEdward Tomasz Napierala 542674074daSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 543674074daSEdward Tomasz Napierala if (is->is_terminating) { 544674074daSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 545009ea47eSEdward Tomasz Napierala return; 546674074daSEdward Tomasz Napierala } 547009ea47eSEdward Tomasz Napierala 548009ea47eSEdward Tomasz Napierala callout_schedule(&is->is_callout, 1 * hz); 549009ea47eSEdward Tomasz Napierala 550009ea47eSEdward Tomasz Napierala is->is_timeout++; 551009ea47eSEdward Tomasz Napierala 552009ea47eSEdward Tomasz Napierala if (is->is_waiting_for_iscsid) { 5532c5b89e5SEdward Tomasz Napierala if (iscsid_timeout > 0 && is->is_timeout > iscsid_timeout) { 554009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "timed out waiting for iscsid(8) " 555009ea47eSEdward Tomasz Napierala "for %d seconds; reconnecting", 556009ea47eSEdward Tomasz Napierala is->is_timeout); 557009ea47eSEdward Tomasz Napierala reconnect_needed = true; 558009ea47eSEdward Tomasz Napierala } 559009ea47eSEdward Tomasz Napierala goto out; 560009ea47eSEdward Tomasz Napierala } 561009ea47eSEdward Tomasz Napierala 562009ea47eSEdward Tomasz Napierala if (is->is_login_phase) { 5632c5b89e5SEdward Tomasz Napierala if (login_timeout > 0 && is->is_timeout > login_timeout) { 564009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "login timed out after %d seconds; " 565009ea47eSEdward Tomasz Napierala "reconnecting", is->is_timeout); 566009ea47eSEdward Tomasz Napierala reconnect_needed = true; 567009ea47eSEdward Tomasz Napierala } 568009ea47eSEdward Tomasz Napierala goto out; 569009ea47eSEdward Tomasz Napierala } 570009ea47eSEdward Tomasz Napierala 5712c5b89e5SEdward Tomasz Napierala if (ping_timeout <= 0) { 5722c5b89e5SEdward Tomasz Napierala /* 5732c5b89e5SEdward Tomasz Napierala * Pings are disabled. Don't send NOP-Out in this case. 5742c5b89e5SEdward Tomasz Napierala * Reset the timeout, to avoid triggering reconnection, 5752c5b89e5SEdward Tomasz Napierala * should the user decide to reenable them. 5762c5b89e5SEdward Tomasz Napierala */ 5772c5b89e5SEdward Tomasz Napierala is->is_timeout = 0; 5782c5b89e5SEdward Tomasz Napierala goto out; 5792c5b89e5SEdward Tomasz Napierala } 5802c5b89e5SEdward Tomasz Napierala 581009ea47eSEdward Tomasz Napierala if (is->is_timeout >= ping_timeout) { 582009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "no ping reply (NOP-In) after %d seconds; " 583009ea47eSEdward Tomasz Napierala "reconnecting", ping_timeout); 584009ea47eSEdward Tomasz Napierala reconnect_needed = true; 585009ea47eSEdward Tomasz Napierala goto out; 586009ea47eSEdward Tomasz Napierala } 587009ea47eSEdward Tomasz Napierala 588009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 589009ea47eSEdward Tomasz Napierala 590009ea47eSEdward Tomasz Napierala /* 591009ea47eSEdward Tomasz Napierala * If the ping was reset less than one second ago - which means 592009ea47eSEdward Tomasz Napierala * that we've received some PDU during the last second - assume 593009ea47eSEdward Tomasz Napierala * the traffic flows correctly and don't bother sending a NOP-Out. 594009ea47eSEdward Tomasz Napierala * 595009ea47eSEdward Tomasz Napierala * (It's 2 - one for one second, and one for incrementing is_timeout 596009ea47eSEdward Tomasz Napierala * earlier in this routine.) 597009ea47eSEdward Tomasz Napierala */ 598009ea47eSEdward Tomasz Napierala if (is->is_timeout < 2) 599009ea47eSEdward Tomasz Napierala return; 600009ea47eSEdward Tomasz Napierala 601d2d52b00SEdward Tomasz Napierala request = icl_pdu_new(is->is_conn, M_NOWAIT); 60246aaea89SEdward Tomasz Napierala if (request == NULL) { 60346aaea89SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate PDU"); 60446aaea89SEdward Tomasz Napierala return; 60546aaea89SEdward Tomasz Napierala } 606009ea47eSEdward Tomasz Napierala bhsno = (struct iscsi_bhs_nop_out *)request->ip_bhs; 607009ea47eSEdward Tomasz Napierala bhsno->bhsno_opcode = ISCSI_BHS_OPCODE_NOP_OUT | 608009ea47eSEdward Tomasz Napierala ISCSI_BHS_OPCODE_IMMEDIATE; 609009ea47eSEdward Tomasz Napierala bhsno->bhsno_flags = 0x80; 610009ea47eSEdward Tomasz Napierala bhsno->bhsno_target_transfer_tag = 0xffffffff; 611009ea47eSEdward Tomasz Napierala iscsi_pdu_queue(request); 612009ea47eSEdward Tomasz Napierala return; 613009ea47eSEdward Tomasz Napierala 614009ea47eSEdward Tomasz Napierala out: 615481b36c6SSteven Hartland if (is->is_terminating) { 616481b36c6SSteven Hartland ISCSI_SESSION_UNLOCK(is); 617481b36c6SSteven Hartland return; 618481b36c6SSteven Hartland } 619481b36c6SSteven Hartland 620009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 621009ea47eSEdward Tomasz Napierala 622009ea47eSEdward Tomasz Napierala if (reconnect_needed) 623009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 624009ea47eSEdward Tomasz Napierala } 625009ea47eSEdward Tomasz Napierala 626009ea47eSEdward Tomasz Napierala static void 627009ea47eSEdward Tomasz Napierala iscsi_pdu_update_statsn(const struct icl_pdu *response) 628009ea47eSEdward Tomasz Napierala { 629009ea47eSEdward Tomasz Napierala const struct iscsi_bhs_data_in *bhsdi; 630009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 6312124e3b0SAlexander Motin uint32_t expcmdsn, maxcmdsn, statsn; 632009ea47eSEdward Tomasz Napierala 633009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 634009ea47eSEdward Tomasz Napierala 635009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 636009ea47eSEdward Tomasz Napierala 637009ea47eSEdward Tomasz Napierala /* 638009ea47eSEdward Tomasz Napierala * We're only using fields common for all the response 639009ea47eSEdward Tomasz Napierala * (target -> initiator) PDUs. 640009ea47eSEdward Tomasz Napierala */ 641009ea47eSEdward Tomasz Napierala bhsdi = (const struct iscsi_bhs_data_in *)response->ip_bhs; 642009ea47eSEdward Tomasz Napierala /* 643009ea47eSEdward Tomasz Napierala * Ok, I lied. In case of Data-In, "The fields StatSN, Status, 644009ea47eSEdward Tomasz Napierala * and Residual Count only have meaningful content if the S bit 645009ea47eSEdward Tomasz Napierala * is set to 1", so we also need to check the bit specific for 646009ea47eSEdward Tomasz Napierala * Data-In PDU. 647009ea47eSEdward Tomasz Napierala */ 648009ea47eSEdward Tomasz Napierala if (bhsdi->bhsdi_opcode != ISCSI_BHS_OPCODE_SCSI_DATA_IN || 649009ea47eSEdward Tomasz Napierala (bhsdi->bhsdi_flags & BHSDI_FLAGS_S) != 0) { 6502124e3b0SAlexander Motin statsn = ntohl(bhsdi->bhsdi_statsn); 6512124e3b0SAlexander Motin if (statsn != is->is_statsn && statsn != (is->is_statsn + 1)) { 6522124e3b0SAlexander Motin /* XXX: This is normal situation for MCS */ 6532124e3b0SAlexander Motin ISCSI_SESSION_WARN(is, "PDU 0x%x StatSN %u != " 6542124e3b0SAlexander Motin "session ExpStatSN %u (or + 1); reconnecting", 6552124e3b0SAlexander Motin bhsdi->bhsdi_opcode, statsn, is->is_statsn); 6562124e3b0SAlexander Motin iscsi_session_reconnect(is); 657009ea47eSEdward Tomasz Napierala } 6582124e3b0SAlexander Motin if (ISCSI_SNGT(statsn, is->is_statsn)) 6592124e3b0SAlexander Motin is->is_statsn = statsn; 660009ea47eSEdward Tomasz Napierala } 661009ea47eSEdward Tomasz Napierala 662009ea47eSEdward Tomasz Napierala expcmdsn = ntohl(bhsdi->bhsdi_expcmdsn); 663009ea47eSEdward Tomasz Napierala maxcmdsn = ntohl(bhsdi->bhsdi_maxcmdsn); 664009ea47eSEdward Tomasz Napierala 6652124e3b0SAlexander Motin if (ISCSI_SNLT(maxcmdsn + 1, expcmdsn)) { 6662124e3b0SAlexander Motin ISCSI_SESSION_DEBUG(is, 6672124e3b0SAlexander Motin "PDU MaxCmdSN %u + 1 < PDU ExpCmdSN %u; ignoring", 668009ea47eSEdward Tomasz Napierala maxcmdsn, expcmdsn); 669009ea47eSEdward Tomasz Napierala } else { 6702124e3b0SAlexander Motin if (ISCSI_SNGT(maxcmdsn, is->is_maxcmdsn)) { 671009ea47eSEdward Tomasz Napierala is->is_maxcmdsn = maxcmdsn; 672009ea47eSEdward Tomasz Napierala 673009ea47eSEdward Tomasz Napierala /* 674009ea47eSEdward Tomasz Napierala * Command window increased; kick the maintanance thread 675009ea47eSEdward Tomasz Napierala * to send out postponed commands. 676009ea47eSEdward Tomasz Napierala */ 67716c158a5SEdward Tomasz Napierala if (!STAILQ_EMPTY(&is->is_postponed)) 678009ea47eSEdward Tomasz Napierala cv_signal(&is->is_maintenance_cv); 6792124e3b0SAlexander Motin } else if (ISCSI_SNLT(maxcmdsn, is->is_maxcmdsn)) { 6802124e3b0SAlexander Motin /* XXX: This is normal situation for MCS */ 6812124e3b0SAlexander Motin ISCSI_SESSION_DEBUG(is, 6822124e3b0SAlexander Motin "PDU MaxCmdSN %u < session MaxCmdSN %u; ignoring", 683009ea47eSEdward Tomasz Napierala maxcmdsn, is->is_maxcmdsn); 684009ea47eSEdward Tomasz Napierala } 685009ea47eSEdward Tomasz Napierala 6862124e3b0SAlexander Motin if (ISCSI_SNGT(expcmdsn, is->is_expcmdsn)) { 687009ea47eSEdward Tomasz Napierala is->is_expcmdsn = expcmdsn; 6882124e3b0SAlexander Motin } else if (ISCSI_SNLT(expcmdsn, is->is_expcmdsn)) { 6892124e3b0SAlexander Motin /* XXX: This is normal situation for MCS */ 6902124e3b0SAlexander Motin ISCSI_SESSION_DEBUG(is, 6912124e3b0SAlexander Motin "PDU ExpCmdSN %u < session ExpCmdSN %u; ignoring", 692009ea47eSEdward Tomasz Napierala expcmdsn, is->is_expcmdsn); 693009ea47eSEdward Tomasz Napierala } 694009ea47eSEdward Tomasz Napierala } 695009ea47eSEdward Tomasz Napierala 696009ea47eSEdward Tomasz Napierala /* 697009ea47eSEdward Tomasz Napierala * Every incoming PDU - not just NOP-In - resets the ping timer. 698009ea47eSEdward Tomasz Napierala * The purpose of the timeout is to reset the connection when it stalls; 699009ea47eSEdward Tomasz Napierala * we don't want this to happen when NOP-In or NOP-Out ends up delayed 700009ea47eSEdward Tomasz Napierala * in some queue. 701009ea47eSEdward Tomasz Napierala */ 702009ea47eSEdward Tomasz Napierala is->is_timeout = 0; 703009ea47eSEdward Tomasz Napierala } 704009ea47eSEdward Tomasz Napierala 705009ea47eSEdward Tomasz Napierala static void 706009ea47eSEdward Tomasz Napierala iscsi_receive_callback(struct icl_pdu *response) 707009ea47eSEdward Tomasz Napierala { 708009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 709009ea47eSEdward Tomasz Napierala 710009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 711009ea47eSEdward Tomasz Napierala 712009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 713009ea47eSEdward Tomasz Napierala 714009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 715009ea47eSEdward Tomasz Napierala if (is->is_login_phase) { 716009ea47eSEdward Tomasz Napierala if (is->is_login_pdu == NULL) 717009ea47eSEdward Tomasz Napierala is->is_login_pdu = response; 718009ea47eSEdward Tomasz Napierala else 719009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 720009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 721009ea47eSEdward Tomasz Napierala cv_signal(&is->is_login_cv); 722009ea47eSEdward Tomasz Napierala return; 723009ea47eSEdward Tomasz Napierala } 724009ea47eSEdward Tomasz Napierala #endif 725009ea47eSEdward Tomasz Napierala 726009ea47eSEdward Tomasz Napierala iscsi_pdu_update_statsn(response); 727009ea47eSEdward Tomasz Napierala 728009ea47eSEdward Tomasz Napierala /* 729009ea47eSEdward Tomasz Napierala * The handling routine is responsible for freeing the PDU 730009ea47eSEdward Tomasz Napierala * when it's no longer needed. 731009ea47eSEdward Tomasz Napierala */ 732009ea47eSEdward Tomasz Napierala switch (response->ip_bhs->bhs_opcode) { 733009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_NOP_IN: 734009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_nop_in(response); 735c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 736009ea47eSEdward Tomasz Napierala break; 737009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_SCSI_RESPONSE: 738009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_scsi_response(response); 739c215ad3aSAlexander Motin /* Session lock dropped inside. */ 740c215ad3aSAlexander Motin ISCSI_SESSION_LOCK_ASSERT_NOT(is); 741009ea47eSEdward Tomasz Napierala break; 742aa75114cSAlexander Motin case ISCSI_BHS_OPCODE_TASK_RESPONSE: 743aa75114cSAlexander Motin iscsi_pdu_handle_task_response(response); 744c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 745aa75114cSAlexander Motin break; 746009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_SCSI_DATA_IN: 747009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_data_in(response); 748c215ad3aSAlexander Motin /* Session lock dropped inside. */ 749c215ad3aSAlexander Motin ISCSI_SESSION_LOCK_ASSERT_NOT(is); 750009ea47eSEdward Tomasz Napierala break; 751009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_LOGOUT_RESPONSE: 752009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_logout_response(response); 753c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 754009ea47eSEdward Tomasz Napierala break; 755009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_R2T: 756009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_r2t(response); 757c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 758009ea47eSEdward Tomasz Napierala break; 759009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_ASYNC_MESSAGE: 760009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_async_message(response); 761c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 762009ea47eSEdward Tomasz Napierala break; 763009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_REJECT: 764009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_reject(response); 765c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 766009ea47eSEdward Tomasz Napierala break; 767009ea47eSEdward Tomasz Napierala default: 768009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "received PDU with unsupported " 769009ea47eSEdward Tomasz Napierala "opcode 0x%x; reconnecting", 770009ea47eSEdward Tomasz Napierala response->ip_bhs->bhs_opcode); 771009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 772c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 773009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 774009ea47eSEdward Tomasz Napierala } 775009ea47eSEdward Tomasz Napierala } 776009ea47eSEdward Tomasz Napierala 777009ea47eSEdward Tomasz Napierala static void 778009ea47eSEdward Tomasz Napierala iscsi_error_callback(struct icl_conn *ic) 779009ea47eSEdward Tomasz Napierala { 780009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 781009ea47eSEdward Tomasz Napierala 782009ea47eSEdward Tomasz Napierala is = CONN_SESSION(ic); 783009ea47eSEdward Tomasz Napierala 784009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "connection error; reconnecting"); 785009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 786009ea47eSEdward Tomasz Napierala } 787009ea47eSEdward Tomasz Napierala 788009ea47eSEdward Tomasz Napierala static void 789009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_nop_in(struct icl_pdu *response) 790009ea47eSEdward Tomasz Napierala { 7911008ac5eSEdward Tomasz Napierala struct iscsi_session *is; 792009ea47eSEdward Tomasz Napierala struct iscsi_bhs_nop_out *bhsno; 793009ea47eSEdward Tomasz Napierala struct iscsi_bhs_nop_in *bhsni; 794009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 7951008ac5eSEdward Tomasz Napierala void *data = NULL; 7961008ac5eSEdward Tomasz Napierala size_t datasize; 7971008ac5eSEdward Tomasz Napierala int error; 798009ea47eSEdward Tomasz Napierala 7991008ac5eSEdward Tomasz Napierala is = PDU_SESSION(response); 800009ea47eSEdward Tomasz Napierala bhsni = (struct iscsi_bhs_nop_in *)response->ip_bhs; 801009ea47eSEdward Tomasz Napierala 802009ea47eSEdward Tomasz Napierala if (bhsni->bhsni_target_transfer_tag == 0xffffffff) { 803009ea47eSEdward Tomasz Napierala /* 804009ea47eSEdward Tomasz Napierala * Nothing to do; iscsi_pdu_update_statsn() already 805009ea47eSEdward Tomasz Napierala * zeroed the timeout. 806009ea47eSEdward Tomasz Napierala */ 807009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 808009ea47eSEdward Tomasz Napierala return; 809009ea47eSEdward Tomasz Napierala } 810009ea47eSEdward Tomasz Napierala 8111008ac5eSEdward Tomasz Napierala datasize = icl_pdu_data_segment_length(response); 8121008ac5eSEdward Tomasz Napierala if (datasize > 0) { 8131008ac5eSEdward Tomasz Napierala data = malloc(datasize, M_ISCSI, M_NOWAIT | M_ZERO); 8141008ac5eSEdward Tomasz Napierala if (data == NULL) { 8151008ac5eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate memory; " 8161008ac5eSEdward Tomasz Napierala "reconnecting"); 8171008ac5eSEdward Tomasz Napierala icl_pdu_free(response); 8181008ac5eSEdward Tomasz Napierala iscsi_session_reconnect(is); 8191008ac5eSEdward Tomasz Napierala return; 8201008ac5eSEdward Tomasz Napierala } 8211008ac5eSEdward Tomasz Napierala icl_pdu_get_data(response, 0, data, datasize); 8221008ac5eSEdward Tomasz Napierala } 8231008ac5eSEdward Tomasz Napierala 824d2d52b00SEdward Tomasz Napierala request = icl_pdu_new(response->ip_conn, M_NOWAIT); 825009ea47eSEdward Tomasz Napierala if (request == NULL) { 8261008ac5eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate memory; " 8271008ac5eSEdward Tomasz Napierala "reconnecting"); 8281008ac5eSEdward Tomasz Napierala free(data, M_ISCSI); 829009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 8301008ac5eSEdward Tomasz Napierala iscsi_session_reconnect(is); 831009ea47eSEdward Tomasz Napierala return; 832009ea47eSEdward Tomasz Napierala } 833009ea47eSEdward Tomasz Napierala bhsno = (struct iscsi_bhs_nop_out *)request->ip_bhs; 834009ea47eSEdward Tomasz Napierala bhsno->bhsno_opcode = ISCSI_BHS_OPCODE_NOP_OUT | 835009ea47eSEdward Tomasz Napierala ISCSI_BHS_OPCODE_IMMEDIATE; 836009ea47eSEdward Tomasz Napierala bhsno->bhsno_flags = 0x80; 8371008ac5eSEdward Tomasz Napierala bhsno->bhsno_initiator_task_tag = 0xffffffff; 838009ea47eSEdward Tomasz Napierala bhsno->bhsno_target_transfer_tag = bhsni->bhsni_target_transfer_tag; 8391008ac5eSEdward Tomasz Napierala if (datasize > 0) { 8401008ac5eSEdward Tomasz Napierala error = icl_pdu_append_data(request, data, datasize, M_NOWAIT); 8411008ac5eSEdward Tomasz Napierala if (error != 0) { 8421008ac5eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate memory; " 8431008ac5eSEdward Tomasz Napierala "reconnecting"); 8441008ac5eSEdward Tomasz Napierala free(data, M_ISCSI); 8451008ac5eSEdward Tomasz Napierala icl_pdu_free(request); 8461008ac5eSEdward Tomasz Napierala icl_pdu_free(response); 8471008ac5eSEdward Tomasz Napierala iscsi_session_reconnect(is); 8481008ac5eSEdward Tomasz Napierala return; 8491008ac5eSEdward Tomasz Napierala } 8501008ac5eSEdward Tomasz Napierala free(data, M_ISCSI); 8511008ac5eSEdward Tomasz Napierala } 852009ea47eSEdward Tomasz Napierala 853009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 854009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(request); 855009ea47eSEdward Tomasz Napierala } 856009ea47eSEdward Tomasz Napierala 857009ea47eSEdward Tomasz Napierala static void 858009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_scsi_response(struct icl_pdu *response) 859009ea47eSEdward Tomasz Napierala { 860009ea47eSEdward Tomasz Napierala struct iscsi_bhs_scsi_response *bhssr; 861009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io; 862009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 86373e2e95dSAlexander Motin union ccb *ccb; 864009ea47eSEdward Tomasz Napierala struct ccb_scsiio *csio; 86573e2e95dSAlexander Motin size_t data_segment_len, received; 866009ea47eSEdward Tomasz Napierala uint16_t sense_len; 867009ea47eSEdward Tomasz Napierala 868009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 869009ea47eSEdward Tomasz Napierala 870009ea47eSEdward Tomasz Napierala bhssr = (struct iscsi_bhs_scsi_response *)response->ip_bhs; 871009ea47eSEdward Tomasz Napierala io = iscsi_outstanding_find(is, bhssr->bhssr_initiator_task_tag); 872aa75114cSAlexander Motin if (io == NULL || io->io_ccb == NULL) { 873009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "bad itt 0x%x", bhssr->bhssr_initiator_task_tag); 874009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 875009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 876c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 877009ea47eSEdward Tomasz Napierala return; 878009ea47eSEdward Tomasz Napierala } 879009ea47eSEdward Tomasz Napierala 88073e2e95dSAlexander Motin ccb = io->io_ccb; 88173e2e95dSAlexander Motin received = io->io_received; 882c215ad3aSAlexander Motin iscsi_outstanding_remove(is, io); 883c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 884c215ad3aSAlexander Motin 885009ea47eSEdward Tomasz Napierala if (bhssr->bhssr_response != BHSSR_RESPONSE_COMMAND_COMPLETED) { 886009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "service response 0x%x", bhssr->bhssr_response); 88773e2e95dSAlexander Motin if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 88873e2e95dSAlexander Motin xpt_freeze_devq(ccb->ccb_h.path, 1); 889009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 890009ea47eSEdward Tomasz Napierala } 89173e2e95dSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP_ERR | CAM_DEV_QFRZN; 892009ea47eSEdward Tomasz Napierala } else if (bhssr->bhssr_status == 0) { 89373e2e95dSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP; 894009ea47eSEdward Tomasz Napierala } else { 89573e2e95dSAlexander Motin if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 89673e2e95dSAlexander Motin xpt_freeze_devq(ccb->ccb_h.path, 1); 897009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 898009ea47eSEdward Tomasz Napierala } 89973e2e95dSAlexander Motin ccb->ccb_h.status = CAM_SCSI_STATUS_ERROR | CAM_DEV_QFRZN; 90073e2e95dSAlexander Motin ccb->csio.scsi_status = bhssr->bhssr_status; 901009ea47eSEdward Tomasz Napierala } 902009ea47eSEdward Tomasz Napierala 90373e2e95dSAlexander Motin csio = &ccb->csio; 904009ea47eSEdward Tomasz Napierala data_segment_len = icl_pdu_data_segment_length(response); 905009ea47eSEdward Tomasz Napierala if (data_segment_len > 0) { 906009ea47eSEdward Tomasz Napierala if (data_segment_len < sizeof(sense_len)) { 907009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "truncated data segment (%zd bytes)", 908009ea47eSEdward Tomasz Napierala data_segment_len); 90973e2e95dSAlexander Motin if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 91073e2e95dSAlexander Motin xpt_freeze_devq(ccb->ccb_h.path, 1); 911009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 912009ea47eSEdward Tomasz Napierala } 91373e2e95dSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP_ERR | CAM_DEV_QFRZN; 914009ea47eSEdward Tomasz Napierala goto out; 915009ea47eSEdward Tomasz Napierala } 916009ea47eSEdward Tomasz Napierala icl_pdu_get_data(response, 0, &sense_len, sizeof(sense_len)); 917009ea47eSEdward Tomasz Napierala sense_len = ntohs(sense_len); 918009ea47eSEdward Tomasz Napierala #if 0 919009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "sense_len %d, data len %zd", 920009ea47eSEdward Tomasz Napierala sense_len, data_segment_len); 921009ea47eSEdward Tomasz Napierala #endif 922009ea47eSEdward Tomasz Napierala if (sizeof(sense_len) + sense_len > data_segment_len) { 923009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "truncated data segment " 924009ea47eSEdward Tomasz Napierala "(%zd bytes, should be %zd)", 925009ea47eSEdward Tomasz Napierala data_segment_len, sizeof(sense_len) + sense_len); 92673e2e95dSAlexander Motin if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 92773e2e95dSAlexander Motin xpt_freeze_devq(ccb->ccb_h.path, 1); 928009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 929009ea47eSEdward Tomasz Napierala } 93073e2e95dSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP_ERR | CAM_DEV_QFRZN; 931009ea47eSEdward Tomasz Napierala goto out; 932009ea47eSEdward Tomasz Napierala } else if (sizeof(sense_len) + sense_len < data_segment_len) 933009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "oversize data segment " 934009ea47eSEdward Tomasz Napierala "(%zd bytes, should be %zd)", 935009ea47eSEdward Tomasz Napierala data_segment_len, sizeof(sense_len) + sense_len); 936009ea47eSEdward Tomasz Napierala if (sense_len > csio->sense_len) { 937009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "truncating sense from %d to %d", 938009ea47eSEdward Tomasz Napierala sense_len, csio->sense_len); 939009ea47eSEdward Tomasz Napierala sense_len = csio->sense_len; 940009ea47eSEdward Tomasz Napierala } 941009ea47eSEdward Tomasz Napierala icl_pdu_get_data(response, sizeof(sense_len), &csio->sense_data, sense_len); 942009ea47eSEdward Tomasz Napierala csio->sense_resid = csio->sense_len - sense_len; 94373e2e95dSAlexander Motin ccb->ccb_h.status |= CAM_AUTOSNS_VALID; 944009ea47eSEdward Tomasz Napierala } 945009ea47eSEdward Tomasz Napierala 946009ea47eSEdward Tomasz Napierala out: 947009ea47eSEdward Tomasz Napierala if (bhssr->bhssr_flags & BHSSR_FLAGS_RESIDUAL_UNDERFLOW) 948009ea47eSEdward Tomasz Napierala csio->resid = ntohl(bhssr->bhssr_residual_count); 949009ea47eSEdward Tomasz Napierala 950009ea47eSEdward Tomasz Napierala if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) { 95173e2e95dSAlexander Motin KASSERT(received <= csio->dxfer_len, 95273e2e95dSAlexander Motin ("received > csio->dxfer_len")); 95373e2e95dSAlexander Motin if (received < csio->dxfer_len) { 95473e2e95dSAlexander Motin if (csio->resid != csio->dxfer_len - received) { 955009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "underflow mismatch: " 956009ea47eSEdward Tomasz Napierala "target indicates %d, we calculated %zd", 95773e2e95dSAlexander Motin csio->resid, csio->dxfer_len - received); 958009ea47eSEdward Tomasz Napierala } 95973e2e95dSAlexander Motin csio->resid = csio->dxfer_len - received; 960009ea47eSEdward Tomasz Napierala } 961009ea47eSEdward Tomasz Napierala } 962009ea47eSEdward Tomasz Napierala 96373e2e95dSAlexander Motin xpt_done(ccb); 964009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 965009ea47eSEdward Tomasz Napierala } 966009ea47eSEdward Tomasz Napierala 967009ea47eSEdward Tomasz Napierala static void 968aa75114cSAlexander Motin iscsi_pdu_handle_task_response(struct icl_pdu *response) 969aa75114cSAlexander Motin { 970aa75114cSAlexander Motin struct iscsi_bhs_task_management_response *bhstmr; 971aa75114cSAlexander Motin struct iscsi_outstanding *io, *aio; 972aa75114cSAlexander Motin struct iscsi_session *is; 973aa75114cSAlexander Motin 974aa75114cSAlexander Motin is = PDU_SESSION(response); 975aa75114cSAlexander Motin 976aa75114cSAlexander Motin bhstmr = (struct iscsi_bhs_task_management_response *)response->ip_bhs; 977aa75114cSAlexander Motin io = iscsi_outstanding_find(is, bhstmr->bhstmr_initiator_task_tag); 978aa75114cSAlexander Motin if (io == NULL || io->io_ccb != NULL) { 979aa75114cSAlexander Motin ISCSI_SESSION_WARN(is, "bad itt 0x%x", 980aa75114cSAlexander Motin bhstmr->bhstmr_initiator_task_tag); 981aa75114cSAlexander Motin icl_pdu_free(response); 982aa75114cSAlexander Motin iscsi_session_reconnect(is); 983aa75114cSAlexander Motin return; 984aa75114cSAlexander Motin } 985aa75114cSAlexander Motin 986aa75114cSAlexander Motin if (bhstmr->bhstmr_response != BHSTMR_RESPONSE_FUNCTION_COMPLETE) { 987aa75114cSAlexander Motin ISCSI_SESSION_WARN(is, "task response 0x%x", 988aa75114cSAlexander Motin bhstmr->bhstmr_response); 989aa75114cSAlexander Motin } else { 990aa75114cSAlexander Motin aio = iscsi_outstanding_find(is, io->io_datasn); 991aa75114cSAlexander Motin if (aio != NULL && aio->io_ccb != NULL) 992aa75114cSAlexander Motin iscsi_session_terminate_task(is, aio, false); 993aa75114cSAlexander Motin } 994aa75114cSAlexander Motin 995aa75114cSAlexander Motin iscsi_outstanding_remove(is, io); 996aa75114cSAlexander Motin icl_pdu_free(response); 997aa75114cSAlexander Motin } 998aa75114cSAlexander Motin 999aa75114cSAlexander Motin static void 1000009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_data_in(struct icl_pdu *response) 1001009ea47eSEdward Tomasz Napierala { 1002009ea47eSEdward Tomasz Napierala struct iscsi_bhs_data_in *bhsdi; 1003009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io; 1004009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 100573e2e95dSAlexander Motin union ccb *ccb; 1006009ea47eSEdward Tomasz Napierala struct ccb_scsiio *csio; 100773e2e95dSAlexander Motin size_t data_segment_len, received, oreceived; 1008009ea47eSEdward Tomasz Napierala 1009009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 1010009ea47eSEdward Tomasz Napierala bhsdi = (struct iscsi_bhs_data_in *)response->ip_bhs; 1011009ea47eSEdward Tomasz Napierala io = iscsi_outstanding_find(is, bhsdi->bhsdi_initiator_task_tag); 1012aa75114cSAlexander Motin if (io == NULL || io->io_ccb == NULL) { 1013009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "bad itt 0x%x", bhsdi->bhsdi_initiator_task_tag); 1014009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1015009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1016c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 1017009ea47eSEdward Tomasz Napierala return; 1018009ea47eSEdward Tomasz Napierala } 1019009ea47eSEdward Tomasz Napierala 1020009ea47eSEdward Tomasz Napierala data_segment_len = icl_pdu_data_segment_length(response); 1021009ea47eSEdward Tomasz Napierala if (data_segment_len == 0) { 1022009ea47eSEdward Tomasz Napierala /* 1023009ea47eSEdward Tomasz Napierala * "The sending of 0 length data segments should be avoided, 1024009ea47eSEdward Tomasz Napierala * but initiators and targets MUST be able to properly receive 1025009ea47eSEdward Tomasz Napierala * 0 length data segments." 1026009ea47eSEdward Tomasz Napierala */ 1027c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 1028009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1029009ea47eSEdward Tomasz Napierala return; 1030009ea47eSEdward Tomasz Napierala } 1031009ea47eSEdward Tomasz Napierala 1032009ea47eSEdward Tomasz Napierala /* 1033009ea47eSEdward Tomasz Napierala * We need to track this for security reasons - without it, malicious target 1034009ea47eSEdward Tomasz Napierala * could respond to SCSI READ without sending Data-In PDUs, which would result 1035009ea47eSEdward Tomasz Napierala * in read operation on the initiator side returning random kernel data. 1036009ea47eSEdward Tomasz Napierala */ 1037009ea47eSEdward Tomasz Napierala if (ntohl(bhsdi->bhsdi_buffer_offset) != io->io_received) { 1038009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "data out of order; expected offset %zd, got %zd", 1039009ea47eSEdward Tomasz Napierala io->io_received, (size_t)ntohl(bhsdi->bhsdi_buffer_offset)); 1040009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1041009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1042c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 1043009ea47eSEdward Tomasz Napierala return; 1044009ea47eSEdward Tomasz Napierala } 1045009ea47eSEdward Tomasz Napierala 104673e2e95dSAlexander Motin ccb = io->io_ccb; 104773e2e95dSAlexander Motin csio = &ccb->csio; 1048009ea47eSEdward Tomasz Napierala 1049d43c9ec1SEdward Tomasz Napierala if (io->io_received + data_segment_len > csio->dxfer_len) { 1050009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "oversize data segment (%zd bytes " 1051d43c9ec1SEdward Tomasz Napierala "at offset %zd, buffer is %d)", 1052d43c9ec1SEdward Tomasz Napierala data_segment_len, io->io_received, csio->dxfer_len); 1053009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1054009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1055c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 1056009ea47eSEdward Tomasz Napierala return; 1057009ea47eSEdward Tomasz Napierala } 1058009ea47eSEdward Tomasz Napierala 105973e2e95dSAlexander Motin oreceived = io->io_received; 1060009ea47eSEdward Tomasz Napierala io->io_received += data_segment_len; 106173e2e95dSAlexander Motin received = io->io_received; 1062c215ad3aSAlexander Motin if ((bhsdi->bhsdi_flags & BHSDI_FLAGS_S) != 0) 1063c215ad3aSAlexander Motin iscsi_outstanding_remove(is, io); 1064c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 1065c215ad3aSAlexander Motin 106673e2e95dSAlexander Motin icl_pdu_get_data(response, 0, csio->data_ptr + oreceived, data_segment_len); 1067009ea47eSEdward Tomasz Napierala 1068009ea47eSEdward Tomasz Napierala /* 1069009ea47eSEdward Tomasz Napierala * XXX: Check DataSN. 1070009ea47eSEdward Tomasz Napierala * XXX: Check F. 1071009ea47eSEdward Tomasz Napierala */ 107269647b7bSEdward Tomasz Napierala if ((bhsdi->bhsdi_flags & BHSDI_FLAGS_S) == 0) { 107369647b7bSEdward Tomasz Napierala /* 107469647b7bSEdward Tomasz Napierala * Nothing more to do. 107569647b7bSEdward Tomasz Napierala */ 107669647b7bSEdward Tomasz Napierala icl_pdu_free(response); 107769647b7bSEdward Tomasz Napierala return; 107869647b7bSEdward Tomasz Napierala } 107969647b7bSEdward Tomasz Napierala 1080009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "got S flag; status 0x%x", bhsdi->bhsdi_status); 1081009ea47eSEdward Tomasz Napierala if (bhsdi->bhsdi_status == 0) { 108273e2e95dSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP; 1083009ea47eSEdward Tomasz Napierala } else { 108473e2e95dSAlexander Motin if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 108573e2e95dSAlexander Motin xpt_freeze_devq(ccb->ccb_h.path, 1); 1086009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 1087009ea47eSEdward Tomasz Napierala } 108873e2e95dSAlexander Motin ccb->ccb_h.status = CAM_SCSI_STATUS_ERROR | CAM_DEV_QFRZN; 1089009ea47eSEdward Tomasz Napierala csio->scsi_status = bhsdi->bhsdi_status; 1090009ea47eSEdward Tomasz Napierala } 109169647b7bSEdward Tomasz Napierala 109269647b7bSEdward Tomasz Napierala if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) { 109373e2e95dSAlexander Motin KASSERT(received <= csio->dxfer_len, 109473e2e95dSAlexander Motin ("received > csio->dxfer_len")); 109573e2e95dSAlexander Motin if (received < csio->dxfer_len) { 109669647b7bSEdward Tomasz Napierala csio->resid = ntohl(bhsdi->bhsdi_residual_count); 109773e2e95dSAlexander Motin if (csio->resid != csio->dxfer_len - received) { 109869647b7bSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "underflow mismatch: " 109969647b7bSEdward Tomasz Napierala "target indicates %d, we calculated %zd", 110073e2e95dSAlexander Motin csio->resid, csio->dxfer_len - received); 110169647b7bSEdward Tomasz Napierala } 110273e2e95dSAlexander Motin csio->resid = csio->dxfer_len - received; 110369647b7bSEdward Tomasz Napierala } 1104009ea47eSEdward Tomasz Napierala } 1105009ea47eSEdward Tomasz Napierala 110673e2e95dSAlexander Motin xpt_done(ccb); 1107009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1108009ea47eSEdward Tomasz Napierala } 1109009ea47eSEdward Tomasz Napierala 1110009ea47eSEdward Tomasz Napierala static void 1111009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_logout_response(struct icl_pdu *response) 1112009ea47eSEdward Tomasz Napierala { 1113009ea47eSEdward Tomasz Napierala 1114009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(PDU_SESSION(response), "logout response"); 1115009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1116009ea47eSEdward Tomasz Napierala } 1117009ea47eSEdward Tomasz Napierala 1118009ea47eSEdward Tomasz Napierala static void 1119009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_r2t(struct icl_pdu *response) 1120009ea47eSEdward Tomasz Napierala { 1121009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 1122009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1123009ea47eSEdward Tomasz Napierala struct iscsi_bhs_r2t *bhsr2t; 1124009ea47eSEdward Tomasz Napierala struct iscsi_bhs_data_out *bhsdo; 1125009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io; 1126009ea47eSEdward Tomasz Napierala struct ccb_scsiio *csio; 1127009ea47eSEdward Tomasz Napierala size_t off, len, total_len; 1128009ea47eSEdward Tomasz Napierala int error; 1129009ea47eSEdward Tomasz Napierala 1130009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 1131009ea47eSEdward Tomasz Napierala 1132009ea47eSEdward Tomasz Napierala bhsr2t = (struct iscsi_bhs_r2t *)response->ip_bhs; 1133009ea47eSEdward Tomasz Napierala io = iscsi_outstanding_find(is, bhsr2t->bhsr2t_initiator_task_tag); 1134aa75114cSAlexander Motin if (io == NULL || io->io_ccb == NULL) { 1135009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "bad itt 0x%x; reconnecting", 1136009ea47eSEdward Tomasz Napierala bhsr2t->bhsr2t_initiator_task_tag); 1137009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1138009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1139009ea47eSEdward Tomasz Napierala return; 1140009ea47eSEdward Tomasz Napierala } 1141009ea47eSEdward Tomasz Napierala 1142009ea47eSEdward Tomasz Napierala csio = &io->io_ccb->csio; 1143009ea47eSEdward Tomasz Napierala 1144009ea47eSEdward Tomasz Napierala if ((csio->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_OUT) { 1145009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "received R2T for read command; reconnecting"); 1146009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1147009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1148009ea47eSEdward Tomasz Napierala return; 1149009ea47eSEdward Tomasz Napierala } 1150009ea47eSEdward Tomasz Napierala 1151009ea47eSEdward Tomasz Napierala /* 1152009ea47eSEdward Tomasz Napierala * XXX: Verify R2TSN. 1153009ea47eSEdward Tomasz Napierala */ 1154009ea47eSEdward Tomasz Napierala 1155009ea47eSEdward Tomasz Napierala io->io_datasn = 0; 1156d43c9ec1SEdward Tomasz Napierala 1157009ea47eSEdward Tomasz Napierala off = ntohl(bhsr2t->bhsr2t_buffer_offset); 1158d43c9ec1SEdward Tomasz Napierala if (off > csio->dxfer_len) { 1159d43c9ec1SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target requested invalid offset " 1160d43c9ec1SEdward Tomasz Napierala "%zd, buffer is is %d; reconnecting", off, csio->dxfer_len); 1161d43c9ec1SEdward Tomasz Napierala icl_pdu_free(response); 1162d43c9ec1SEdward Tomasz Napierala iscsi_session_reconnect(is); 1163d43c9ec1SEdward Tomasz Napierala return; 1164d43c9ec1SEdward Tomasz Napierala } 1165d43c9ec1SEdward Tomasz Napierala 1166009ea47eSEdward Tomasz Napierala total_len = ntohl(bhsr2t->bhsr2t_desired_data_transfer_length); 1167d43c9ec1SEdward Tomasz Napierala if (total_len == 0 || total_len > csio->dxfer_len) { 1168d43c9ec1SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target requested invalid length " 1169d43c9ec1SEdward Tomasz Napierala "%zd, buffer is %d; reconnecting", total_len, csio->dxfer_len); 1170d43c9ec1SEdward Tomasz Napierala icl_pdu_free(response); 1171d43c9ec1SEdward Tomasz Napierala iscsi_session_reconnect(is); 1172d43c9ec1SEdward Tomasz Napierala return; 1173d43c9ec1SEdward Tomasz Napierala } 1174009ea47eSEdward Tomasz Napierala 1175009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "r2t; off %zd, len %zd", off, total_len); 1176009ea47eSEdward Tomasz Napierala 1177009ea47eSEdward Tomasz Napierala for (;;) { 1178009ea47eSEdward Tomasz Napierala len = total_len; 1179009ea47eSEdward Tomasz Napierala 1180009ea47eSEdward Tomasz Napierala if (len > is->is_max_data_segment_length) 1181009ea47eSEdward Tomasz Napierala len = is->is_max_data_segment_length; 1182009ea47eSEdward Tomasz Napierala 1183009ea47eSEdward Tomasz Napierala if (off + len > csio->dxfer_len) { 1184d43c9ec1SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target requested invalid " 1185d43c9ec1SEdward Tomasz Napierala "length/offset %zd, buffer is %d; reconnecting", 1186009ea47eSEdward Tomasz Napierala off + len, csio->dxfer_len); 1187009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1188009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1189009ea47eSEdward Tomasz Napierala return; 1190009ea47eSEdward Tomasz Napierala } 1191009ea47eSEdward Tomasz Napierala 1192d2d52b00SEdward Tomasz Napierala request = icl_pdu_new(response->ip_conn, M_NOWAIT); 1193009ea47eSEdward Tomasz Napierala if (request == NULL) { 1194009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1195009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1196009ea47eSEdward Tomasz Napierala return; 1197009ea47eSEdward Tomasz Napierala } 1198009ea47eSEdward Tomasz Napierala 1199009ea47eSEdward Tomasz Napierala bhsdo = (struct iscsi_bhs_data_out *)request->ip_bhs; 1200009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_opcode = ISCSI_BHS_OPCODE_SCSI_DATA_OUT; 1201009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_lun = bhsr2t->bhsr2t_lun; 1202009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_initiator_task_tag = 1203009ea47eSEdward Tomasz Napierala bhsr2t->bhsr2t_initiator_task_tag; 1204009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_target_transfer_tag = 1205009ea47eSEdward Tomasz Napierala bhsr2t->bhsr2t_target_transfer_tag; 1206009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_datasn = htonl(io->io_datasn++); 1207009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_buffer_offset = htonl(off); 1208d43c9ec1SEdward Tomasz Napierala error = icl_pdu_append_data(request, csio->data_ptr + off, len, 1209d43c9ec1SEdward Tomasz Napierala M_NOWAIT); 1210009ea47eSEdward Tomasz Napierala if (error != 0) { 1211d43c9ec1SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate memory; " 1212d43c9ec1SEdward Tomasz Napierala "reconnecting"); 1213009ea47eSEdward Tomasz Napierala icl_pdu_free(request); 1214009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1215009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1216009ea47eSEdward Tomasz Napierala return; 1217009ea47eSEdward Tomasz Napierala } 1218009ea47eSEdward Tomasz Napierala 1219009ea47eSEdward Tomasz Napierala off += len; 1220009ea47eSEdward Tomasz Napierala total_len -= len; 1221009ea47eSEdward Tomasz Napierala 1222009ea47eSEdward Tomasz Napierala if (total_len == 0) { 1223009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_flags |= BHSDO_FLAGS_F; 1224009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "setting F, off %zd", off); 1225009ea47eSEdward Tomasz Napierala } else { 1226009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "not finished, off %zd", off); 1227009ea47eSEdward Tomasz Napierala } 1228009ea47eSEdward Tomasz Napierala 1229009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(request); 1230009ea47eSEdward Tomasz Napierala 1231009ea47eSEdward Tomasz Napierala if (total_len == 0) 1232009ea47eSEdward Tomasz Napierala break; 1233009ea47eSEdward Tomasz Napierala } 1234009ea47eSEdward Tomasz Napierala 1235009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1236009ea47eSEdward Tomasz Napierala } 1237009ea47eSEdward Tomasz Napierala 1238009ea47eSEdward Tomasz Napierala static void 1239009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_async_message(struct icl_pdu *response) 1240009ea47eSEdward Tomasz Napierala { 1241009ea47eSEdward Tomasz Napierala struct iscsi_bhs_asynchronous_message *bhsam; 1242009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1243009ea47eSEdward Tomasz Napierala 1244009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 1245009ea47eSEdward Tomasz Napierala bhsam = (struct iscsi_bhs_asynchronous_message *)response->ip_bhs; 1246009ea47eSEdward Tomasz Napierala switch (bhsam->bhsam_async_event) { 1247009ea47eSEdward Tomasz Napierala case BHSAM_EVENT_TARGET_REQUESTS_LOGOUT: 1248009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target requests logout; removing session"); 1249009ea47eSEdward Tomasz Napierala iscsi_session_logout(is); 1250009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1251009ea47eSEdward Tomasz Napierala break; 1252009ea47eSEdward Tomasz Napierala case BHSAM_EVENT_TARGET_TERMINATES_CONNECTION: 1253009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target indicates it will drop drop the connection"); 1254009ea47eSEdward Tomasz Napierala break; 1255009ea47eSEdward Tomasz Napierala case BHSAM_EVENT_TARGET_TERMINATES_SESSION: 1256009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target indicates it will drop drop the session"); 1257009ea47eSEdward Tomasz Napierala break; 1258009ea47eSEdward Tomasz Napierala default: 1259009ea47eSEdward Tomasz Napierala /* 1260009ea47eSEdward Tomasz Napierala * XXX: Technically, we're obligated to also handle 1261009ea47eSEdward Tomasz Napierala * parameter renegotiation. 1262009ea47eSEdward Tomasz Napierala */ 1263009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "ignoring AsyncEvent %d", bhsam->bhsam_async_event); 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_reject(struct icl_pdu *response) 1272009ea47eSEdward Tomasz Napierala { 1273009ea47eSEdward Tomasz Napierala struct iscsi_bhs_reject *bhsr; 1274009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1275009ea47eSEdward Tomasz Napierala 1276009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 1277009ea47eSEdward Tomasz Napierala bhsr = (struct iscsi_bhs_reject *)response->ip_bhs; 1278009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "received Reject PDU, reason 0x%x; protocol error?", 1279009ea47eSEdward Tomasz Napierala bhsr->bhsr_reason); 1280009ea47eSEdward Tomasz Napierala 1281009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1282009ea47eSEdward Tomasz Napierala } 1283009ea47eSEdward Tomasz Napierala 1284009ea47eSEdward Tomasz Napierala static int 1285009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_wait(struct iscsi_softc *sc, 1286009ea47eSEdward Tomasz Napierala struct iscsi_daemon_request *request) 1287009ea47eSEdward Tomasz Napierala { 1288009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1289009ea47eSEdward Tomasz Napierala int error; 1290009ea47eSEdward Tomasz Napierala 1291009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1292009ea47eSEdward Tomasz Napierala for (;;) { 1293009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 12942be596adSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1295009ea47eSEdward Tomasz Napierala if (is->is_waiting_for_iscsid) 1296009ea47eSEdward Tomasz Napierala break; 12972be596adSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1298009ea47eSEdward Tomasz Napierala } 1299009ea47eSEdward Tomasz Napierala 1300009ea47eSEdward Tomasz Napierala if (is == NULL) { 1301009ea47eSEdward Tomasz Napierala /* 1302009ea47eSEdward Tomasz Napierala * No session requires attention from iscsid(8); wait. 1303009ea47eSEdward Tomasz Napierala */ 1304009ea47eSEdward Tomasz Napierala error = cv_wait_sig(&sc->sc_cv, &sc->sc_lock); 1305009ea47eSEdward Tomasz Napierala if (error != 0) { 1306009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1307009ea47eSEdward Tomasz Napierala return (error); 1308009ea47eSEdward Tomasz Napierala } 1309009ea47eSEdward Tomasz Napierala continue; 1310009ea47eSEdward Tomasz Napierala } 1311009ea47eSEdward Tomasz Napierala 1312009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = false; 1313009ea47eSEdward Tomasz Napierala is->is_login_phase = true; 1314009ea47eSEdward Tomasz Napierala is->is_reason[0] = '\0'; 1315009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1316009ea47eSEdward Tomasz Napierala 1317009ea47eSEdward Tomasz Napierala request->idr_session_id = is->is_id; 1318ffe82e05SAlexander Motin memcpy(&request->idr_isid, &is->is_isid, 1319ffe82e05SAlexander Motin sizeof(request->idr_isid)); 1320ffe82e05SAlexander Motin request->idr_tsih = 0; /* New or reinstated session. */ 1321009ea47eSEdward Tomasz Napierala memcpy(&request->idr_conf, &is->is_conf, 1322009ea47eSEdward Tomasz Napierala sizeof(request->idr_conf)); 1323009ea47eSEdward Tomasz Napierala 132482babffbSEdward Tomasz Napierala error = icl_limits(is->is_conf.isc_offload, 132582babffbSEdward Tomasz Napierala &request->idr_limits.isl_max_data_segment_length); 132682babffbSEdward Tomasz Napierala if (error != 0) { 132782babffbSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "icl_limits for offload \"%s\" " 132882babffbSEdward Tomasz Napierala "failed with error %d", is->is_conf.isc_offload, 132982babffbSEdward Tomasz Napierala error); 133082babffbSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 133182babffbSEdward Tomasz Napierala return (error); 133282babffbSEdward Tomasz Napierala } 133382babffbSEdward Tomasz Napierala 1334009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1335009ea47eSEdward Tomasz Napierala return (0); 1336009ea47eSEdward Tomasz Napierala } 1337009ea47eSEdward Tomasz Napierala } 1338009ea47eSEdward Tomasz Napierala 1339009ea47eSEdward Tomasz Napierala static int 1340009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_handoff(struct iscsi_softc *sc, 1341009ea47eSEdward Tomasz Napierala struct iscsi_daemon_handoff *handoff) 1342009ea47eSEdward Tomasz Napierala { 1343009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1344f5cadbc4SNavdeep Parhar struct icl_conn *ic; 1345009ea47eSEdward Tomasz Napierala int error; 1346009ea47eSEdward Tomasz Napierala 1347009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1348009ea47eSEdward Tomasz Napierala 1349009ea47eSEdward Tomasz Napierala /* 1350009ea47eSEdward Tomasz Napierala * Find the session to hand off socket to. 1351009ea47eSEdward Tomasz Napierala */ 1352009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1353009ea47eSEdward Tomasz Napierala if (is->is_id == handoff->idh_session_id) 1354009ea47eSEdward Tomasz Napierala break; 1355009ea47eSEdward Tomasz Napierala } 1356009ea47eSEdward Tomasz Napierala if (is == NULL) { 1357009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1358009ea47eSEdward Tomasz Napierala return (ESRCH); 1359009ea47eSEdward Tomasz Napierala } 1360009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1361f5cadbc4SNavdeep Parhar ic = is->is_conn; 1362009ea47eSEdward Tomasz Napierala if (is->is_conf.isc_discovery || is->is_terminating) { 1363009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1364009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1365009ea47eSEdward Tomasz Napierala return (EINVAL); 1366009ea47eSEdward Tomasz Napierala } 13670260023fSEdward Tomasz Napierala if (is->is_connected) { 13680260023fSEdward Tomasz Napierala /* 13690260023fSEdward Tomasz Napierala * This might have happened because another iscsid(8) 13700260023fSEdward Tomasz Napierala * instance handed off the connection in the meantime. 13710260023fSEdward Tomasz Napierala * Just return. 13720260023fSEdward Tomasz Napierala */ 13730260023fSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "handoff on already connected " 13740260023fSEdward Tomasz Napierala "session"); 13750260023fSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 13760260023fSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 13770260023fSEdward Tomasz Napierala return (EBUSY); 13780260023fSEdward Tomasz Napierala } 1379009ea47eSEdward Tomasz Napierala 1380009ea47eSEdward Tomasz Napierala strlcpy(is->is_target_alias, handoff->idh_target_alias, 1381009ea47eSEdward Tomasz Napierala sizeof(is->is_target_alias)); 1382ffe82e05SAlexander Motin is->is_tsih = handoff->idh_tsih; 1383009ea47eSEdward Tomasz Napierala is->is_statsn = handoff->idh_statsn; 1384009ea47eSEdward Tomasz Napierala is->is_initial_r2t = handoff->idh_initial_r2t; 1385009ea47eSEdward Tomasz Napierala is->is_immediate_data = handoff->idh_immediate_data; 1386c8b73c2cSNavdeep Parhar 1387c8b73c2cSNavdeep Parhar /* 1388c8b73c2cSNavdeep Parhar * Cap MaxRecvDataSegmentLength obtained from the target to the maximum 1389c8b73c2cSNavdeep Parhar * size supported by our ICL module. 1390c8b73c2cSNavdeep Parhar */ 13917ceec7e4SNavdeep Parhar is->is_max_data_segment_length = min(ic->ic_max_data_segment_length, 13927ceec7e4SNavdeep Parhar handoff->idh_max_data_segment_length); 1393009ea47eSEdward Tomasz Napierala is->is_max_burst_length = handoff->idh_max_burst_length; 1394009ea47eSEdward Tomasz Napierala is->is_first_burst_length = handoff->idh_first_burst_length; 1395009ea47eSEdward Tomasz Napierala 1396009ea47eSEdward Tomasz Napierala if (handoff->idh_header_digest == ISCSI_DIGEST_CRC32C) 1397f5cadbc4SNavdeep Parhar ic->ic_header_crc32c = true; 1398009ea47eSEdward Tomasz Napierala else 1399f5cadbc4SNavdeep Parhar ic->ic_header_crc32c = false; 1400009ea47eSEdward Tomasz Napierala if (handoff->idh_data_digest == ISCSI_DIGEST_CRC32C) 1401f5cadbc4SNavdeep Parhar ic->ic_data_crc32c = true; 1402009ea47eSEdward Tomasz Napierala else 1403f5cadbc4SNavdeep Parhar ic->ic_data_crc32c = false; 1404009ea47eSEdward Tomasz Napierala 1405009ea47eSEdward Tomasz Napierala is->is_cmdsn = 0; 1406cf23c509SEdward Tomasz Napierala is->is_expcmdsn = 0; 1407cf23c509SEdward Tomasz Napierala is->is_maxcmdsn = 0; 1408009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = false; 1409009ea47eSEdward Tomasz Napierala is->is_login_phase = false; 1410009ea47eSEdward Tomasz Napierala is->is_timeout = 0; 1411009ea47eSEdward Tomasz Napierala is->is_connected = true; 1412009ea47eSEdward Tomasz Napierala is->is_reason[0] = '\0'; 1413009ea47eSEdward Tomasz Napierala 1414009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1415009ea47eSEdward Tomasz Napierala 141657a4f20bSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 141757a4f20bSEdward Tomasz Napierala if (handoff->idh_socket != 0) { 141857a4f20bSEdward Tomasz Napierala #endif 141957a4f20bSEdward Tomasz Napierala /* 142057a4f20bSEdward Tomasz Napierala * Handoff without using ICL proxy. 142157a4f20bSEdward Tomasz Napierala */ 1422f5cadbc4SNavdeep Parhar error = icl_conn_handoff(ic, handoff->idh_socket); 1423009ea47eSEdward Tomasz Napierala if (error != 0) { 1424009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1425009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1426009ea47eSEdward Tomasz Napierala return (error); 1427009ea47eSEdward Tomasz Napierala } 142857a4f20bSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 142957a4f20bSEdward Tomasz Napierala } 1430009ea47eSEdward Tomasz Napierala #endif 1431009ea47eSEdward Tomasz Napierala 1432009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1433009ea47eSEdward Tomasz Napierala 1434009ea47eSEdward Tomasz Napierala if (is->is_sim != NULL) { 1435009ea47eSEdward Tomasz Napierala /* 1436009ea47eSEdward Tomasz Napierala * When reconnecting, there already is SIM allocated for the session. 1437009ea47eSEdward Tomasz Napierala */ 1438009ea47eSEdward Tomasz Napierala KASSERT(is->is_simq_frozen, ("reconnect without frozen simq")); 1439009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1440009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "releasing"); 1441009ea47eSEdward Tomasz Napierala xpt_release_simq(is->is_sim, 1); 1442009ea47eSEdward Tomasz Napierala is->is_simq_frozen = false; 1443009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1444009ea47eSEdward Tomasz Napierala 1445009ea47eSEdward Tomasz Napierala } else { 1446009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1447009ea47eSEdward Tomasz Napierala is->is_devq = cam_simq_alloc(maxtags); 1448009ea47eSEdward Tomasz Napierala if (is->is_devq == NULL) { 1449009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate simq"); 1450009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1451009ea47eSEdward Tomasz Napierala return (ENOMEM); 1452009ea47eSEdward Tomasz Napierala } 1453009ea47eSEdward Tomasz Napierala 1454009ea47eSEdward Tomasz Napierala is->is_sim = cam_sim_alloc(iscsi_action, iscsi_poll, "iscsi", 1455009ea47eSEdward Tomasz Napierala is, is->is_id /* unit */, &is->is_lock, 1456462cf3baSAlexander Motin 1, maxtags, is->is_devq); 1457009ea47eSEdward Tomasz Napierala if (is->is_sim == NULL) { 1458009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1459009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate SIM"); 1460009ea47eSEdward Tomasz Napierala cam_simq_free(is->is_devq); 1461009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1462009ea47eSEdward Tomasz Napierala return (ENOMEM); 1463009ea47eSEdward Tomasz Napierala } 1464009ea47eSEdward Tomasz Napierala 1465009ea47eSEdward Tomasz Napierala error = xpt_bus_register(is->is_sim, NULL, 0); 1466009ea47eSEdward Tomasz Napierala if (error != 0) { 1467009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1468009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to register bus"); 1469009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1470009ea47eSEdward Tomasz Napierala return (ENOMEM); 1471009ea47eSEdward Tomasz Napierala } 1472009ea47eSEdward Tomasz Napierala 1473009ea47eSEdward Tomasz Napierala error = xpt_create_path(&is->is_path, /*periph*/NULL, 1474009ea47eSEdward Tomasz Napierala cam_sim_path(is->is_sim), CAM_TARGET_WILDCARD, 1475009ea47eSEdward Tomasz Napierala CAM_LUN_WILDCARD); 1476009ea47eSEdward Tomasz Napierala if (error != CAM_REQ_CMP) { 1477009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1478009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to create path"); 1479009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1480009ea47eSEdward Tomasz Napierala return (ENOMEM); 1481009ea47eSEdward Tomasz Napierala } 1482009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1483009ea47eSEdward Tomasz Napierala } 1484009ea47eSEdward Tomasz Napierala 1485009ea47eSEdward Tomasz Napierala return (0); 1486009ea47eSEdward Tomasz Napierala } 1487009ea47eSEdward Tomasz Napierala 1488009ea47eSEdward Tomasz Napierala static int 1489009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_fail(struct iscsi_softc *sc, 1490009ea47eSEdward Tomasz Napierala struct iscsi_daemon_fail *fail) 1491009ea47eSEdward Tomasz Napierala { 1492009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1493009ea47eSEdward Tomasz Napierala 1494009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1495009ea47eSEdward Tomasz Napierala 1496009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1497009ea47eSEdward Tomasz Napierala if (is->is_id == fail->idf_session_id) 1498009ea47eSEdward Tomasz Napierala break; 1499009ea47eSEdward Tomasz Napierala } 1500009ea47eSEdward Tomasz Napierala if (is == NULL) { 1501009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1502009ea47eSEdward Tomasz Napierala return (ESRCH); 1503009ea47eSEdward Tomasz Napierala } 1504009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1505009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "iscsid(8) failed: %s", 1506009ea47eSEdward Tomasz Napierala fail->idf_reason); 1507009ea47eSEdward Tomasz Napierala strlcpy(is->is_reason, fail->idf_reason, sizeof(is->is_reason)); 1508009ea47eSEdward Tomasz Napierala //is->is_waiting_for_iscsid = false; 1509009ea47eSEdward Tomasz Napierala //is->is_login_phase = true; 1510009ea47eSEdward Tomasz Napierala //iscsi_session_reconnect(is); 1511009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1512009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1513009ea47eSEdward Tomasz Napierala 1514009ea47eSEdward Tomasz Napierala return (0); 1515009ea47eSEdward Tomasz Napierala } 1516009ea47eSEdward Tomasz Napierala 1517009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 1518009ea47eSEdward Tomasz Napierala static int 1519009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_connect(struct iscsi_softc *sc, 1520009ea47eSEdward Tomasz Napierala struct iscsi_daemon_connect *idc) 1521009ea47eSEdward Tomasz Napierala { 1522009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1523009ea47eSEdward Tomasz Napierala struct sockaddr *from_sa, *to_sa; 1524009ea47eSEdward Tomasz Napierala int error; 1525009ea47eSEdward Tomasz Napierala 1526009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1527009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1528009ea47eSEdward Tomasz Napierala if (is->is_id == idc->idc_session_id) 1529009ea47eSEdward Tomasz Napierala break; 1530009ea47eSEdward Tomasz Napierala } 1531009ea47eSEdward Tomasz Napierala if (is == NULL) { 1532009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1533009ea47eSEdward Tomasz Napierala return (ESRCH); 1534009ea47eSEdward Tomasz Napierala } 1535009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1536009ea47eSEdward Tomasz Napierala 1537009ea47eSEdward Tomasz Napierala if (idc->idc_from_addrlen > 0) { 1538009ea47eSEdward Tomasz Napierala error = getsockaddr(&from_sa, (void *)idc->idc_from_addr, idc->idc_from_addrlen); 153957a4f20bSEdward Tomasz Napierala if (error != 0) { 154057a4f20bSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, 154157a4f20bSEdward Tomasz Napierala "getsockaddr failed with error %d", error); 1542009ea47eSEdward Tomasz Napierala return (error); 154357a4f20bSEdward Tomasz Napierala } 1544009ea47eSEdward Tomasz Napierala } else { 1545009ea47eSEdward Tomasz Napierala from_sa = NULL; 1546009ea47eSEdward Tomasz Napierala } 1547009ea47eSEdward Tomasz Napierala error = getsockaddr(&to_sa, (void *)idc->idc_to_addr, idc->idc_to_addrlen); 1548009ea47eSEdward Tomasz Napierala if (error != 0) { 154957a4f20bSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "getsockaddr failed with error %d", 155057a4f20bSEdward Tomasz Napierala error); 1551009ea47eSEdward Tomasz Napierala free(from_sa, M_SONAME); 1552009ea47eSEdward Tomasz Napierala return (error); 1553009ea47eSEdward Tomasz Napierala } 1554009ea47eSEdward Tomasz Napierala 1555009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1556009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = false; 1557009ea47eSEdward Tomasz Napierala is->is_login_phase = true; 1558009ea47eSEdward Tomasz Napierala is->is_timeout = 0; 1559009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1560009ea47eSEdward Tomasz Napierala 1561009ea47eSEdward Tomasz Napierala error = icl_conn_connect(is->is_conn, idc->idc_iser, idc->idc_domain, 1562009ea47eSEdward Tomasz Napierala idc->idc_socktype, idc->idc_protocol, from_sa, to_sa); 1563009ea47eSEdward Tomasz Napierala free(from_sa, M_SONAME); 1564009ea47eSEdward Tomasz Napierala free(to_sa, M_SONAME); 1565009ea47eSEdward Tomasz Napierala 1566009ea47eSEdward Tomasz Napierala /* 1567009ea47eSEdward Tomasz Napierala * Digests are always disabled during login phase. 1568009ea47eSEdward Tomasz Napierala */ 1569009ea47eSEdward Tomasz Napierala is->is_conn->ic_header_crc32c = false; 1570009ea47eSEdward Tomasz Napierala is->is_conn->ic_data_crc32c = false; 1571009ea47eSEdward Tomasz Napierala 1572009ea47eSEdward Tomasz Napierala return (error); 1573009ea47eSEdward Tomasz Napierala } 1574009ea47eSEdward Tomasz Napierala 1575009ea47eSEdward Tomasz Napierala static int 1576009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_send(struct iscsi_softc *sc, 1577009ea47eSEdward Tomasz Napierala struct iscsi_daemon_send *ids) 1578009ea47eSEdward Tomasz Napierala { 1579009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1580009ea47eSEdward Tomasz Napierala struct icl_pdu *ip; 1581009ea47eSEdward Tomasz Napierala size_t datalen; 1582009ea47eSEdward Tomasz Napierala void *data; 1583009ea47eSEdward Tomasz Napierala int error; 1584009ea47eSEdward Tomasz Napierala 1585009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1586009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1587009ea47eSEdward Tomasz Napierala if (is->is_id == ids->ids_session_id) 1588009ea47eSEdward Tomasz Napierala break; 1589009ea47eSEdward Tomasz Napierala } 1590009ea47eSEdward Tomasz Napierala if (is == NULL) { 1591009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1592009ea47eSEdward Tomasz Napierala return (ESRCH); 1593009ea47eSEdward Tomasz Napierala } 1594009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1595009ea47eSEdward Tomasz Napierala 1596009ea47eSEdward Tomasz Napierala if (is->is_login_phase == false) 1597009ea47eSEdward Tomasz Napierala return (EBUSY); 1598009ea47eSEdward Tomasz Napierala 1599009ea47eSEdward Tomasz Napierala if (is->is_terminating || is->is_reconnecting) 1600009ea47eSEdward Tomasz Napierala return (EIO); 1601009ea47eSEdward Tomasz Napierala 1602009ea47eSEdward Tomasz Napierala datalen = ids->ids_data_segment_len; 1603009ea47eSEdward Tomasz Napierala if (datalen > ISCSI_MAX_DATA_SEGMENT_LENGTH) 1604009ea47eSEdward Tomasz Napierala return (EINVAL); 1605009ea47eSEdward Tomasz Napierala if (datalen > 0) { 1606009ea47eSEdward Tomasz Napierala data = malloc(datalen, M_ISCSI, M_WAITOK); 1607009ea47eSEdward Tomasz Napierala error = copyin(ids->ids_data_segment, data, datalen); 1608009ea47eSEdward Tomasz Napierala if (error != 0) { 1609009ea47eSEdward Tomasz Napierala free(data, M_ISCSI); 1610009ea47eSEdward Tomasz Napierala return (error); 1611009ea47eSEdward Tomasz Napierala } 1612009ea47eSEdward Tomasz Napierala } 1613009ea47eSEdward Tomasz Napierala 1614d2d52b00SEdward Tomasz Napierala ip = icl_pdu_new(is->is_conn, M_WAITOK); 1615009ea47eSEdward Tomasz Napierala memcpy(ip->ip_bhs, ids->ids_bhs, sizeof(*ip->ip_bhs)); 1616009ea47eSEdward Tomasz Napierala if (datalen > 0) { 1617009ea47eSEdward Tomasz Napierala error = icl_pdu_append_data(ip, data, datalen, M_WAITOK); 1618009ea47eSEdward Tomasz Napierala KASSERT(error == 0, ("icl_pdu_append_data(..., M_WAITOK) failed")); 1619009ea47eSEdward Tomasz Napierala free(data, M_ISCSI); 1620009ea47eSEdward Tomasz Napierala } 1621009ea47eSEdward Tomasz Napierala icl_pdu_queue(ip); 1622009ea47eSEdward Tomasz Napierala 1623009ea47eSEdward Tomasz Napierala return (0); 1624009ea47eSEdward Tomasz Napierala } 1625009ea47eSEdward Tomasz Napierala 1626009ea47eSEdward Tomasz Napierala static int 1627009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_receive(struct iscsi_softc *sc, 1628009ea47eSEdward Tomasz Napierala struct iscsi_daemon_receive *idr) 1629009ea47eSEdward Tomasz Napierala { 1630009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1631009ea47eSEdward Tomasz Napierala struct icl_pdu *ip; 1632009ea47eSEdward Tomasz Napierala void *data; 1633009ea47eSEdward Tomasz Napierala 1634009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1635009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1636009ea47eSEdward Tomasz Napierala if (is->is_id == idr->idr_session_id) 1637009ea47eSEdward Tomasz Napierala break; 1638009ea47eSEdward Tomasz Napierala } 1639009ea47eSEdward Tomasz Napierala if (is == NULL) { 1640009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1641009ea47eSEdward Tomasz Napierala return (ESRCH); 1642009ea47eSEdward Tomasz Napierala } 1643009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1644009ea47eSEdward Tomasz Napierala 1645009ea47eSEdward Tomasz Napierala if (is->is_login_phase == false) 1646009ea47eSEdward Tomasz Napierala return (EBUSY); 1647009ea47eSEdward Tomasz Napierala 1648009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1649009ea47eSEdward Tomasz Napierala while (is->is_login_pdu == NULL && 1650009ea47eSEdward Tomasz Napierala is->is_terminating == false && 1651009ea47eSEdward Tomasz Napierala is->is_reconnecting == false) 1652009ea47eSEdward Tomasz Napierala cv_wait(&is->is_login_cv, &is->is_lock); 1653009ea47eSEdward Tomasz Napierala if (is->is_terminating || is->is_reconnecting) { 1654009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1655009ea47eSEdward Tomasz Napierala return (EIO); 1656009ea47eSEdward Tomasz Napierala } 1657009ea47eSEdward Tomasz Napierala ip = is->is_login_pdu; 1658009ea47eSEdward Tomasz Napierala is->is_login_pdu = NULL; 1659009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1660009ea47eSEdward Tomasz Napierala 1661009ea47eSEdward Tomasz Napierala if (ip->ip_data_len > idr->idr_data_segment_len) { 1662009ea47eSEdward Tomasz Napierala icl_pdu_free(ip); 1663009ea47eSEdward Tomasz Napierala return (EMSGSIZE); 1664009ea47eSEdward Tomasz Napierala } 1665009ea47eSEdward Tomasz Napierala 1666009ea47eSEdward Tomasz Napierala copyout(ip->ip_bhs, idr->idr_bhs, sizeof(*ip->ip_bhs)); 1667009ea47eSEdward Tomasz Napierala if (ip->ip_data_len > 0) { 1668009ea47eSEdward Tomasz Napierala data = malloc(ip->ip_data_len, M_ISCSI, M_WAITOK); 1669009ea47eSEdward Tomasz Napierala icl_pdu_get_data(ip, 0, data, ip->ip_data_len); 1670009ea47eSEdward Tomasz Napierala copyout(data, idr->idr_data_segment, ip->ip_data_len); 1671009ea47eSEdward Tomasz Napierala free(data, M_ISCSI); 1672009ea47eSEdward Tomasz Napierala } 1673009ea47eSEdward Tomasz Napierala 1674009ea47eSEdward Tomasz Napierala icl_pdu_free(ip); 1675009ea47eSEdward Tomasz Napierala 1676009ea47eSEdward Tomasz Napierala return (0); 1677009ea47eSEdward Tomasz Napierala } 1678009ea47eSEdward Tomasz Napierala #endif /* ICL_KERNEL_PROXY */ 1679009ea47eSEdward Tomasz Napierala 1680009ea47eSEdward Tomasz Napierala static void 1681009ea47eSEdward Tomasz Napierala iscsi_sanitize_session_conf(struct iscsi_session_conf *isc) 1682009ea47eSEdward Tomasz Napierala { 1683009ea47eSEdward Tomasz Napierala /* 1684009ea47eSEdward Tomasz Napierala * Just make sure all the fields are null-terminated. 1685009ea47eSEdward Tomasz Napierala * 1686009ea47eSEdward Tomasz Napierala * XXX: This is not particularly secure. We should 1687009ea47eSEdward Tomasz Napierala * create our own conf and then copy in relevant 1688009ea47eSEdward Tomasz Napierala * fields. 1689009ea47eSEdward Tomasz Napierala */ 1690009ea47eSEdward Tomasz Napierala isc->isc_initiator[ISCSI_NAME_LEN - 1] = '\0'; 1691009ea47eSEdward Tomasz Napierala isc->isc_initiator_addr[ISCSI_ADDR_LEN - 1] = '\0'; 1692009ea47eSEdward Tomasz Napierala isc->isc_initiator_alias[ISCSI_ALIAS_LEN - 1] = '\0'; 1693009ea47eSEdward Tomasz Napierala isc->isc_target[ISCSI_NAME_LEN - 1] = '\0'; 1694009ea47eSEdward Tomasz Napierala isc->isc_target_addr[ISCSI_ADDR_LEN - 1] = '\0'; 1695009ea47eSEdward Tomasz Napierala isc->isc_user[ISCSI_NAME_LEN - 1] = '\0'; 1696009ea47eSEdward Tomasz Napierala isc->isc_secret[ISCSI_SECRET_LEN - 1] = '\0'; 1697009ea47eSEdward Tomasz Napierala isc->isc_mutual_user[ISCSI_NAME_LEN - 1] = '\0'; 1698009ea47eSEdward Tomasz Napierala isc->isc_mutual_secret[ISCSI_SECRET_LEN - 1] = '\0'; 1699009ea47eSEdward Tomasz Napierala } 1700009ea47eSEdward Tomasz Napierala 170151be90b5SEdward Tomasz Napierala static bool 170251be90b5SEdward Tomasz Napierala iscsi_valid_session_conf(const struct iscsi_session_conf *isc) 170351be90b5SEdward Tomasz Napierala { 170451be90b5SEdward Tomasz Napierala 170551be90b5SEdward Tomasz Napierala if (isc->isc_initiator[0] == '\0') { 170651be90b5SEdward Tomasz Napierala ISCSI_DEBUG("empty isc_initiator"); 170751be90b5SEdward Tomasz Napierala return (false); 170851be90b5SEdward Tomasz Napierala } 170951be90b5SEdward Tomasz Napierala 171051be90b5SEdward Tomasz Napierala if (isc->isc_target_addr[0] == '\0') { 171151be90b5SEdward Tomasz Napierala ISCSI_DEBUG("empty isc_target_addr"); 171251be90b5SEdward Tomasz Napierala return (false); 171351be90b5SEdward Tomasz Napierala } 171451be90b5SEdward Tomasz Napierala 171551be90b5SEdward Tomasz Napierala if (isc->isc_discovery != 0 && isc->isc_target[0] != 0) { 171651be90b5SEdward Tomasz Napierala ISCSI_DEBUG("non-empty isc_target for discovery session"); 171751be90b5SEdward Tomasz Napierala return (false); 171851be90b5SEdward Tomasz Napierala } 171951be90b5SEdward Tomasz Napierala 172051be90b5SEdward Tomasz Napierala if (isc->isc_discovery == 0 && isc->isc_target[0] == 0) { 172151be90b5SEdward Tomasz Napierala ISCSI_DEBUG("empty isc_target for non-discovery session"); 172251be90b5SEdward Tomasz Napierala return (false); 172351be90b5SEdward Tomasz Napierala } 172451be90b5SEdward Tomasz Napierala 172551be90b5SEdward Tomasz Napierala return (true); 172651be90b5SEdward Tomasz Napierala } 172751be90b5SEdward Tomasz Napierala 1728009ea47eSEdward Tomasz Napierala static int 1729009ea47eSEdward Tomasz Napierala iscsi_ioctl_session_add(struct iscsi_softc *sc, struct iscsi_session_add *isa) 1730009ea47eSEdward Tomasz Napierala { 1731009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1732009ea47eSEdward Tomasz Napierala const struct iscsi_session *is2; 1733009ea47eSEdward Tomasz Napierala int error; 1734009ea47eSEdward Tomasz Napierala 1735009ea47eSEdward Tomasz Napierala iscsi_sanitize_session_conf(&isa->isa_conf); 173651be90b5SEdward Tomasz Napierala if (iscsi_valid_session_conf(&isa->isa_conf) == false) 173751be90b5SEdward Tomasz Napierala return (EINVAL); 1738009ea47eSEdward Tomasz Napierala 1739009ea47eSEdward Tomasz Napierala is = malloc(sizeof(*is), M_ISCSI, M_ZERO | M_WAITOK); 1740009ea47eSEdward Tomasz Napierala memcpy(&is->is_conf, &isa->isa_conf, sizeof(is->is_conf)); 1741009ea47eSEdward Tomasz Napierala 1742009ea47eSEdward Tomasz Napierala sx_xlock(&sc->sc_lock); 1743009ea47eSEdward Tomasz Napierala 1744009ea47eSEdward Tomasz Napierala /* 1745009ea47eSEdward Tomasz Napierala * Prevent duplicates. 1746009ea47eSEdward Tomasz Napierala */ 1747009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is2, &sc->sc_sessions, is_next) { 17487843bd03SEdward Tomasz Napierala if (!!is->is_conf.isc_discovery != 17497843bd03SEdward Tomasz Napierala !!is2->is_conf.isc_discovery) 17507843bd03SEdward Tomasz Napierala continue; 17517843bd03SEdward Tomasz Napierala 17527843bd03SEdward Tomasz Napierala if (strcmp(is->is_conf.isc_target_addr, 17537843bd03SEdward Tomasz Napierala is2->is_conf.isc_target_addr) != 0) 17547843bd03SEdward Tomasz Napierala continue; 17557843bd03SEdward Tomasz Napierala 17567843bd03SEdward Tomasz Napierala if (is->is_conf.isc_discovery == 0 && 17577843bd03SEdward Tomasz Napierala strcmp(is->is_conf.isc_target, 17587843bd03SEdward Tomasz Napierala is2->is_conf.isc_target) != 0) 17597843bd03SEdward Tomasz Napierala continue; 17607843bd03SEdward Tomasz Napierala 1761009ea47eSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 17627843bd03SEdward Tomasz Napierala free(is, M_ISCSI); 1763009ea47eSEdward Tomasz Napierala return (EBUSY); 1764009ea47eSEdward Tomasz Napierala } 1765009ea47eSEdward Tomasz Napierala 176682babffbSEdward Tomasz Napierala is->is_conn = icl_new_conn(is->is_conf.isc_offload, 176782babffbSEdward Tomasz Napierala "iscsi", &is->is_lock); 176882babffbSEdward Tomasz Napierala if (is->is_conn == NULL) { 176982babffbSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 177082babffbSEdward Tomasz Napierala free(is, M_ISCSI); 177182babffbSEdward Tomasz Napierala return (EINVAL); 177282babffbSEdward Tomasz Napierala } 1773009ea47eSEdward Tomasz Napierala is->is_conn->ic_receive = iscsi_receive_callback; 1774009ea47eSEdward Tomasz Napierala is->is_conn->ic_error = iscsi_error_callback; 1775009ea47eSEdward Tomasz Napierala is->is_conn->ic_prv0 = is; 1776009ea47eSEdward Tomasz Napierala TAILQ_INIT(&is->is_outstanding); 177716c158a5SEdward Tomasz Napierala STAILQ_INIT(&is->is_postponed); 1778009ea47eSEdward Tomasz Napierala mtx_init(&is->is_lock, "iscsi_lock", NULL, MTX_DEF); 1779009ea47eSEdward Tomasz Napierala cv_init(&is->is_maintenance_cv, "iscsi_mt"); 1780009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 1781009ea47eSEdward Tomasz Napierala cv_init(&is->is_login_cv, "iscsi_login"); 1782009ea47eSEdward Tomasz Napierala #endif 1783009ea47eSEdward Tomasz Napierala 1784009ea47eSEdward Tomasz Napierala is->is_softc = sc; 1785009ea47eSEdward Tomasz Napierala sc->sc_last_session_id++; 1786009ea47eSEdward Tomasz Napierala is->is_id = sc->sc_last_session_id; 1787ffe82e05SAlexander Motin is->is_isid[0] = 0x80; /* RFC 3720, 10.12.5: 10b, "Random" ISID. */ 1788ffe82e05SAlexander Motin arc4rand(&is->is_isid[1], 5, 0); 1789ffe82e05SAlexander Motin is->is_tsih = 0; 1790009ea47eSEdward Tomasz Napierala callout_init(&is->is_callout, 1); 1791009ea47eSEdward Tomasz Napierala 1792009ea47eSEdward Tomasz Napierala error = kthread_add(iscsi_maintenance_thread, is, NULL, NULL, 0, 0, "iscsimt"); 1793009ea47eSEdward Tomasz Napierala if (error != 0) { 1794009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "kthread_add(9) failed with error %d", error); 179509f2b94bSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 1796009ea47eSEdward Tomasz Napierala return (error); 1797009ea47eSEdward Tomasz Napierala } 1798009ea47eSEdward Tomasz Napierala 179909f2b94bSEdward Tomasz Napierala callout_reset(&is->is_callout, 1 * hz, iscsi_callout, is); 180009f2b94bSEdward Tomasz Napierala TAILQ_INSERT_TAIL(&sc->sc_sessions, is, is_next); 180109f2b94bSEdward Tomasz Napierala 1802009ea47eSEdward Tomasz Napierala /* 1803009ea47eSEdward Tomasz Napierala * Trigger immediate reconnection. 1804009ea47eSEdward Tomasz Napierala */ 18052be596adSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1806009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = true; 1807009ea47eSEdward Tomasz Napierala strlcpy(is->is_reason, "Waiting for iscsid(8)", sizeof(is->is_reason)); 18082be596adSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1809009ea47eSEdward Tomasz Napierala cv_signal(&sc->sc_cv); 1810009ea47eSEdward Tomasz Napierala 1811009ea47eSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 1812009ea47eSEdward Tomasz Napierala 1813009ea47eSEdward Tomasz Napierala return (0); 1814009ea47eSEdward Tomasz Napierala } 1815009ea47eSEdward Tomasz Napierala 1816009ea47eSEdward Tomasz Napierala static bool 1817009ea47eSEdward Tomasz Napierala iscsi_session_conf_matches(unsigned int id1, const struct iscsi_session_conf *c1, 1818009ea47eSEdward Tomasz Napierala unsigned int id2, const struct iscsi_session_conf *c2) 1819009ea47eSEdward Tomasz Napierala { 18206cc1e267SEdward Tomasz Napierala 18216cc1e267SEdward Tomasz Napierala if (id2 != 0 && id2 != id1) 1822009ea47eSEdward Tomasz Napierala return (false); 18236cc1e267SEdward Tomasz Napierala if (c2->isc_target[0] != '\0' && 18246cc1e267SEdward Tomasz Napierala strcmp(c1->isc_target, c2->isc_target) != 0) 18256cc1e267SEdward Tomasz Napierala return (false); 18266cc1e267SEdward Tomasz Napierala if (c2->isc_target_addr[0] != '\0' && 18276cc1e267SEdward Tomasz Napierala strcmp(c1->isc_target_addr, c2->isc_target_addr) != 0) 18286cc1e267SEdward Tomasz Napierala return (false); 18296cc1e267SEdward Tomasz Napierala return (true); 1830009ea47eSEdward Tomasz Napierala } 1831009ea47eSEdward Tomasz Napierala 1832009ea47eSEdward Tomasz Napierala static int 1833009ea47eSEdward Tomasz Napierala iscsi_ioctl_session_remove(struct iscsi_softc *sc, 1834009ea47eSEdward Tomasz Napierala struct iscsi_session_remove *isr) 1835009ea47eSEdward Tomasz Napierala { 1836009ea47eSEdward Tomasz Napierala struct iscsi_session *is, *tmp; 1837009ea47eSEdward Tomasz Napierala bool found = false; 1838009ea47eSEdward Tomasz Napierala 1839009ea47eSEdward Tomasz Napierala iscsi_sanitize_session_conf(&isr->isr_conf); 1840009ea47eSEdward Tomasz Napierala 1841009ea47eSEdward Tomasz Napierala sx_xlock(&sc->sc_lock); 1842009ea47eSEdward Tomasz Napierala TAILQ_FOREACH_SAFE(is, &sc->sc_sessions, is_next, tmp) { 1843009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1844009ea47eSEdward Tomasz Napierala if (iscsi_session_conf_matches(is->is_id, &is->is_conf, 1845009ea47eSEdward Tomasz Napierala isr->isr_session_id, &isr->isr_conf)) { 1846009ea47eSEdward Tomasz Napierala found = true; 1847009ea47eSEdward Tomasz Napierala iscsi_session_logout(is); 1848009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1849009ea47eSEdward Tomasz Napierala } 1850009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1851009ea47eSEdward Tomasz Napierala } 1852009ea47eSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 1853009ea47eSEdward Tomasz Napierala 1854009ea47eSEdward Tomasz Napierala if (!found) 1855009ea47eSEdward Tomasz Napierala return (ESRCH); 1856009ea47eSEdward Tomasz Napierala 1857009ea47eSEdward Tomasz Napierala return (0); 1858009ea47eSEdward Tomasz Napierala } 1859009ea47eSEdward Tomasz Napierala 1860009ea47eSEdward Tomasz Napierala static int 1861009ea47eSEdward Tomasz Napierala iscsi_ioctl_session_list(struct iscsi_softc *sc, struct iscsi_session_list *isl) 1862009ea47eSEdward Tomasz Napierala { 1863009ea47eSEdward Tomasz Napierala int error; 1864009ea47eSEdward Tomasz Napierala unsigned int i = 0; 1865009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1866009ea47eSEdward Tomasz Napierala struct iscsi_session_state iss; 1867009ea47eSEdward Tomasz Napierala 1868009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1869009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1870009ea47eSEdward Tomasz Napierala if (i >= isl->isl_nentries) { 1871009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1872009ea47eSEdward Tomasz Napierala return (EMSGSIZE); 1873009ea47eSEdward Tomasz Napierala } 1874009ea47eSEdward Tomasz Napierala memset(&iss, 0, sizeof(iss)); 1875009ea47eSEdward Tomasz Napierala memcpy(&iss.iss_conf, &is->is_conf, sizeof(iss.iss_conf)); 1876009ea47eSEdward Tomasz Napierala iss.iss_id = is->is_id; 1877009ea47eSEdward Tomasz Napierala strlcpy(iss.iss_target_alias, is->is_target_alias, sizeof(iss.iss_target_alias)); 1878009ea47eSEdward Tomasz Napierala strlcpy(iss.iss_reason, is->is_reason, sizeof(iss.iss_reason)); 187982babffbSEdward Tomasz Napierala strlcpy(iss.iss_offload, is->is_conn->ic_offload, sizeof(iss.iss_offload)); 1880009ea47eSEdward Tomasz Napierala 1881009ea47eSEdward Tomasz Napierala if (is->is_conn->ic_header_crc32c) 1882009ea47eSEdward Tomasz Napierala iss.iss_header_digest = ISCSI_DIGEST_CRC32C; 1883009ea47eSEdward Tomasz Napierala else 1884009ea47eSEdward Tomasz Napierala iss.iss_header_digest = ISCSI_DIGEST_NONE; 1885009ea47eSEdward Tomasz Napierala 1886009ea47eSEdward Tomasz Napierala if (is->is_conn->ic_data_crc32c) 1887009ea47eSEdward Tomasz Napierala iss.iss_data_digest = ISCSI_DIGEST_CRC32C; 1888009ea47eSEdward Tomasz Napierala else 1889009ea47eSEdward Tomasz Napierala iss.iss_data_digest = ISCSI_DIGEST_NONE; 1890009ea47eSEdward Tomasz Napierala 1891009ea47eSEdward Tomasz Napierala iss.iss_max_data_segment_length = is->is_max_data_segment_length; 1892009ea47eSEdward Tomasz Napierala iss.iss_immediate_data = is->is_immediate_data; 1893009ea47eSEdward Tomasz Napierala iss.iss_connected = is->is_connected; 1894009ea47eSEdward Tomasz Napierala 1895009ea47eSEdward Tomasz Napierala error = copyout(&iss, isl->isl_pstates + i, sizeof(iss)); 1896009ea47eSEdward Tomasz Napierala if (error != 0) { 1897009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1898009ea47eSEdward Tomasz Napierala return (error); 1899009ea47eSEdward Tomasz Napierala } 1900009ea47eSEdward Tomasz Napierala i++; 1901009ea47eSEdward Tomasz Napierala } 1902009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1903009ea47eSEdward Tomasz Napierala 1904009ea47eSEdward Tomasz Napierala isl->isl_nentries = i; 1905009ea47eSEdward Tomasz Napierala 1906009ea47eSEdward Tomasz Napierala return (0); 1907009ea47eSEdward Tomasz Napierala } 1908009ea47eSEdward Tomasz Napierala 1909009ea47eSEdward Tomasz Napierala static int 191051be90b5SEdward Tomasz Napierala iscsi_ioctl_session_modify(struct iscsi_softc *sc, 191151be90b5SEdward Tomasz Napierala struct iscsi_session_modify *ism) 191251be90b5SEdward Tomasz Napierala { 191351be90b5SEdward Tomasz Napierala struct iscsi_session *is; 191451be90b5SEdward Tomasz Napierala 191551be90b5SEdward Tomasz Napierala iscsi_sanitize_session_conf(&ism->ism_conf); 191651be90b5SEdward Tomasz Napierala if (iscsi_valid_session_conf(&ism->ism_conf) == false) 191751be90b5SEdward Tomasz Napierala return (EINVAL); 191851be90b5SEdward Tomasz Napierala 191951be90b5SEdward Tomasz Napierala sx_xlock(&sc->sc_lock); 192051be90b5SEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 192151be90b5SEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 192251be90b5SEdward Tomasz Napierala if (is->is_id == ism->ism_session_id) 192351be90b5SEdward Tomasz Napierala break; 192451be90b5SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 192551be90b5SEdward Tomasz Napierala } 192651be90b5SEdward Tomasz Napierala if (is == NULL) { 192751be90b5SEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 192851be90b5SEdward Tomasz Napierala return (ESRCH); 192951be90b5SEdward Tomasz Napierala } 193051be90b5SEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 193151be90b5SEdward Tomasz Napierala 193251be90b5SEdward Tomasz Napierala memcpy(&is->is_conf, &ism->ism_conf, sizeof(is->is_conf)); 193351be90b5SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 193451be90b5SEdward Tomasz Napierala 193551be90b5SEdward Tomasz Napierala iscsi_session_reconnect(is); 193651be90b5SEdward Tomasz Napierala 193751be90b5SEdward Tomasz Napierala return (0); 193851be90b5SEdward Tomasz Napierala } 193951be90b5SEdward Tomasz Napierala 194051be90b5SEdward Tomasz Napierala static int 1941009ea47eSEdward Tomasz Napierala iscsi_ioctl(struct cdev *dev, u_long cmd, caddr_t arg, int mode, 1942009ea47eSEdward Tomasz Napierala struct thread *td) 1943009ea47eSEdward Tomasz Napierala { 1944009ea47eSEdward Tomasz Napierala struct iscsi_softc *sc; 1945009ea47eSEdward Tomasz Napierala 1946009ea47eSEdward Tomasz Napierala sc = dev->si_drv1; 1947009ea47eSEdward Tomasz Napierala 1948009ea47eSEdward Tomasz Napierala switch (cmd) { 1949009ea47eSEdward Tomasz Napierala case ISCSIDWAIT: 1950009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_wait(sc, 1951009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_request *)arg)); 1952009ea47eSEdward Tomasz Napierala case ISCSIDHANDOFF: 1953009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_handoff(sc, 1954009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_handoff *)arg)); 1955009ea47eSEdward Tomasz Napierala case ISCSIDFAIL: 1956009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_fail(sc, 1957009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_fail *)arg)); 1958009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 1959009ea47eSEdward Tomasz Napierala case ISCSIDCONNECT: 1960009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_connect(sc, 1961009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_connect *)arg)); 1962009ea47eSEdward Tomasz Napierala case ISCSIDSEND: 1963009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_send(sc, 1964009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_send *)arg)); 1965009ea47eSEdward Tomasz Napierala case ISCSIDRECEIVE: 1966009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_receive(sc, 1967009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_receive *)arg)); 1968009ea47eSEdward Tomasz Napierala #endif /* ICL_KERNEL_PROXY */ 1969009ea47eSEdward Tomasz Napierala case ISCSISADD: 1970009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_session_add(sc, 1971009ea47eSEdward Tomasz Napierala (struct iscsi_session_add *)arg)); 1972009ea47eSEdward Tomasz Napierala case ISCSISREMOVE: 1973009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_session_remove(sc, 1974009ea47eSEdward Tomasz Napierala (struct iscsi_session_remove *)arg)); 1975009ea47eSEdward Tomasz Napierala case ISCSISLIST: 1976009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_session_list(sc, 1977009ea47eSEdward Tomasz Napierala (struct iscsi_session_list *)arg)); 197851be90b5SEdward Tomasz Napierala case ISCSISMODIFY: 197951be90b5SEdward Tomasz Napierala return (iscsi_ioctl_session_modify(sc, 198051be90b5SEdward Tomasz Napierala (struct iscsi_session_modify *)arg)); 1981009ea47eSEdward Tomasz Napierala default: 1982009ea47eSEdward Tomasz Napierala return (EINVAL); 1983009ea47eSEdward Tomasz Napierala } 1984009ea47eSEdward Tomasz Napierala } 1985009ea47eSEdward Tomasz Napierala 1986009ea47eSEdward Tomasz Napierala static struct iscsi_outstanding * 1987009ea47eSEdward Tomasz Napierala iscsi_outstanding_find(struct iscsi_session *is, uint32_t initiator_task_tag) 1988009ea47eSEdward Tomasz Napierala { 1989009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io; 1990009ea47eSEdward Tomasz Napierala 1991009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 1992009ea47eSEdward Tomasz Napierala 1993009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(io, &is->is_outstanding, io_next) { 1994009ea47eSEdward Tomasz Napierala if (io->io_initiator_task_tag == initiator_task_tag) 1995009ea47eSEdward Tomasz Napierala return (io); 1996009ea47eSEdward Tomasz Napierala } 1997009ea47eSEdward Tomasz Napierala return (NULL); 1998009ea47eSEdward Tomasz Napierala } 1999009ea47eSEdward Tomasz Napierala 2000aa75114cSAlexander Motin static struct iscsi_outstanding * 2001aa75114cSAlexander Motin iscsi_outstanding_find_ccb(struct iscsi_session *is, union ccb *ccb) 2002aa75114cSAlexander Motin { 2003aa75114cSAlexander Motin struct iscsi_outstanding *io; 2004aa75114cSAlexander Motin 2005aa75114cSAlexander Motin ISCSI_SESSION_LOCK_ASSERT(is); 2006aa75114cSAlexander Motin 2007aa75114cSAlexander Motin TAILQ_FOREACH(io, &is->is_outstanding, io_next) { 2008aa75114cSAlexander Motin if (io->io_ccb == ccb) 2009aa75114cSAlexander Motin return (io); 2010aa75114cSAlexander Motin } 2011aa75114cSAlexander Motin return (NULL); 2012aa75114cSAlexander Motin } 2013aa75114cSAlexander Motin 2014aa75114cSAlexander Motin static struct iscsi_outstanding * 2015009ea47eSEdward Tomasz Napierala iscsi_outstanding_add(struct iscsi_session *is, 20167a03d007SEdward Tomasz Napierala union ccb *ccb, uint32_t *initiator_task_tagp) 2017009ea47eSEdward Tomasz Napierala { 2018009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io; 20197a03d007SEdward Tomasz Napierala int error; 2020009ea47eSEdward Tomasz Napierala 2021009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 2022009ea47eSEdward Tomasz Napierala 2023009ea47eSEdward Tomasz Napierala io = uma_zalloc(iscsi_outstanding_zone, M_NOWAIT | M_ZERO); 2024009ea47eSEdward Tomasz Napierala if (io == NULL) { 20257a03d007SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate %zd bytes", 20267a03d007SEdward Tomasz Napierala sizeof(*io)); 2027aa75114cSAlexander Motin return (NULL); 2028009ea47eSEdward Tomasz Napierala } 20297a03d007SEdward Tomasz Napierala 20307a03d007SEdward Tomasz Napierala error = icl_conn_task_setup(is->is_conn, &ccb->csio, 20317a03d007SEdward Tomasz Napierala initiator_task_tagp, &io->io_icl_prv); 20327a03d007SEdward Tomasz Napierala if (error != 0) { 20337a03d007SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, 20347a03d007SEdward Tomasz Napierala "icl_conn_task_setup() failed with error %d", error); 20357a03d007SEdward Tomasz Napierala uma_zfree(iscsi_outstanding_zone, io); 20367a03d007SEdward Tomasz Napierala return (NULL); 20377a03d007SEdward Tomasz Napierala } 20387a03d007SEdward Tomasz Napierala 20397a03d007SEdward Tomasz Napierala KASSERT(iscsi_outstanding_find(is, *initiator_task_tagp) == NULL, 20407a03d007SEdward Tomasz Napierala ("initiator_task_tag 0x%x already added", *initiator_task_tagp)); 20417a03d007SEdward Tomasz Napierala 20427a03d007SEdward Tomasz Napierala io->io_initiator_task_tag = *initiator_task_tagp; 2043009ea47eSEdward Tomasz Napierala io->io_ccb = ccb; 2044009ea47eSEdward Tomasz Napierala TAILQ_INSERT_TAIL(&is->is_outstanding, io, io_next); 2045aa75114cSAlexander Motin return (io); 2046009ea47eSEdward Tomasz Napierala } 2047009ea47eSEdward Tomasz Napierala 2048009ea47eSEdward Tomasz Napierala static void 2049009ea47eSEdward Tomasz Napierala iscsi_outstanding_remove(struct iscsi_session *is, struct iscsi_outstanding *io) 2050009ea47eSEdward Tomasz Napierala { 2051009ea47eSEdward Tomasz Napierala 2052009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 2053009ea47eSEdward Tomasz Napierala 20547a03d007SEdward Tomasz Napierala icl_conn_task_done(is->is_conn, io->io_icl_prv); 2055009ea47eSEdward Tomasz Napierala TAILQ_REMOVE(&is->is_outstanding, io, io_next); 2056009ea47eSEdward Tomasz Napierala uma_zfree(iscsi_outstanding_zone, io); 2057009ea47eSEdward Tomasz Napierala } 2058009ea47eSEdward Tomasz Napierala 2059009ea47eSEdward Tomasz Napierala static void 2060aa75114cSAlexander Motin iscsi_action_abort(struct iscsi_session *is, union ccb *ccb) 2061aa75114cSAlexander Motin { 2062aa75114cSAlexander Motin struct icl_pdu *request; 2063aa75114cSAlexander Motin struct iscsi_bhs_task_management_request *bhstmr; 2064aa75114cSAlexander Motin struct ccb_abort *cab = &ccb->cab; 2065aa75114cSAlexander Motin struct iscsi_outstanding *io, *aio; 20667a03d007SEdward Tomasz Napierala uint32_t initiator_task_tag; 2067aa75114cSAlexander Motin 2068aa75114cSAlexander Motin ISCSI_SESSION_LOCK_ASSERT(is); 2069aa75114cSAlexander Motin 2070aa75114cSAlexander Motin #if 0 2071aa75114cSAlexander Motin KASSERT(is->is_login_phase == false, ("%s called during Login Phase", __func__)); 2072aa75114cSAlexander Motin #else 2073aa75114cSAlexander Motin if (is->is_login_phase) { 2074aa75114cSAlexander Motin ccb->ccb_h.status = CAM_REQ_ABORTED; 2075aa75114cSAlexander Motin xpt_done(ccb); 2076aa75114cSAlexander Motin return; 2077aa75114cSAlexander Motin } 2078aa75114cSAlexander Motin #endif 2079aa75114cSAlexander Motin 2080aa75114cSAlexander Motin aio = iscsi_outstanding_find_ccb(is, cab->abort_ccb); 2081aa75114cSAlexander Motin if (aio == NULL) { 2082aa75114cSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP; 2083aa75114cSAlexander Motin xpt_done(ccb); 2084aa75114cSAlexander Motin return; 2085aa75114cSAlexander Motin } 2086aa75114cSAlexander Motin 2087d2d52b00SEdward Tomasz Napierala request = icl_pdu_new(is->is_conn, M_NOWAIT); 2088aa75114cSAlexander Motin if (request == NULL) { 2089aa75114cSAlexander Motin ccb->ccb_h.status = CAM_RESRC_UNAVAIL; 2090aa75114cSAlexander Motin xpt_done(ccb); 2091aa75114cSAlexander Motin return; 2092aa75114cSAlexander Motin } 2093aa75114cSAlexander Motin 20947a03d007SEdward Tomasz Napierala initiator_task_tag = is->is_initiator_task_tag++; 2095aa75114cSAlexander Motin 20967a03d007SEdward Tomasz Napierala io = iscsi_outstanding_add(is, NULL, &initiator_task_tag); 2097aa75114cSAlexander Motin if (io == NULL) { 2098aa75114cSAlexander Motin icl_pdu_free(request); 2099aa75114cSAlexander Motin ccb->ccb_h.status = CAM_RESRC_UNAVAIL; 2100aa75114cSAlexander Motin xpt_done(ccb); 2101aa75114cSAlexander Motin return; 2102aa75114cSAlexander Motin } 2103aa75114cSAlexander Motin io->io_datasn = aio->io_initiator_task_tag; 21047a03d007SEdward Tomasz Napierala 21057a03d007SEdward Tomasz Napierala bhstmr = (struct iscsi_bhs_task_management_request *)request->ip_bhs; 21067a03d007SEdward Tomasz Napierala bhstmr->bhstmr_opcode = ISCSI_BHS_OPCODE_TASK_REQUEST; 21077a03d007SEdward Tomasz Napierala bhstmr->bhstmr_function = 0x80 | BHSTMR_FUNCTION_ABORT_TASK; 21087a03d007SEdward Tomasz Napierala bhstmr->bhstmr_lun = htobe64(CAM_EXTLUN_BYTE_SWIZZLE(ccb->ccb_h.target_lun)); 21097a03d007SEdward Tomasz Napierala bhstmr->bhstmr_initiator_task_tag = initiator_task_tag; 21107a03d007SEdward Tomasz Napierala bhstmr->bhstmr_referenced_task_tag = aio->io_initiator_task_tag; 21117a03d007SEdward Tomasz Napierala 2112aa75114cSAlexander Motin iscsi_pdu_queue_locked(request); 2113aa75114cSAlexander Motin } 2114aa75114cSAlexander Motin 2115aa75114cSAlexander Motin static void 2116009ea47eSEdward Tomasz Napierala iscsi_action_scsiio(struct iscsi_session *is, union ccb *ccb) 2117009ea47eSEdward Tomasz Napierala { 2118009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 2119009ea47eSEdward Tomasz Napierala struct iscsi_bhs_scsi_command *bhssc; 2120009ea47eSEdward Tomasz Napierala struct ccb_scsiio *csio; 2121aa75114cSAlexander Motin struct iscsi_outstanding *io; 2122009ea47eSEdward Tomasz Napierala size_t len; 21237a03d007SEdward Tomasz Napierala uint32_t initiator_task_tag; 2124009ea47eSEdward Tomasz Napierala int error; 2125009ea47eSEdward Tomasz Napierala 2126009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 2127009ea47eSEdward Tomasz Napierala 2128009ea47eSEdward Tomasz Napierala #if 0 2129009ea47eSEdward Tomasz Napierala KASSERT(is->is_login_phase == false, ("%s called during Login Phase", __func__)); 2130009ea47eSEdward Tomasz Napierala #else 2131009ea47eSEdward Tomasz Napierala if (is->is_login_phase) { 2132009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "called during login phase"); 2133009ea47eSEdward Tomasz Napierala if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 2134009ea47eSEdward Tomasz Napierala xpt_freeze_devq(ccb->ccb_h.path, 1); 2135009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 2136009ea47eSEdward Tomasz Napierala } 2137009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_REQ_ABORTED | CAM_DEV_QFRZN; 2138009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2139009ea47eSEdward Tomasz Napierala return; 2140009ea47eSEdward Tomasz Napierala } 2141009ea47eSEdward Tomasz Napierala #endif 2142009ea47eSEdward Tomasz Napierala 2143d2d52b00SEdward Tomasz Napierala request = icl_pdu_new(is->is_conn, M_NOWAIT); 2144009ea47eSEdward Tomasz Napierala if (request == NULL) { 2145009ea47eSEdward Tomasz Napierala if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 2146009ea47eSEdward Tomasz Napierala xpt_freeze_devq(ccb->ccb_h.path, 1); 2147009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 2148009ea47eSEdward Tomasz Napierala } 2149009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_RESRC_UNAVAIL | CAM_DEV_QFRZN; 2150009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2151009ea47eSEdward Tomasz Napierala return; 2152009ea47eSEdward Tomasz Napierala } 2153009ea47eSEdward Tomasz Napierala 21547a03d007SEdward Tomasz Napierala initiator_task_tag = is->is_initiator_task_tag++; 21557a03d007SEdward Tomasz Napierala io = iscsi_outstanding_add(is, ccb, &initiator_task_tag); 21567a03d007SEdward Tomasz Napierala if (io == NULL) { 21577a03d007SEdward Tomasz Napierala icl_pdu_free(request); 21587a03d007SEdward Tomasz Napierala if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 21597a03d007SEdward Tomasz Napierala xpt_freeze_devq(ccb->ccb_h.path, 1); 21607a03d007SEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 21617a03d007SEdward Tomasz Napierala } 21627a03d007SEdward Tomasz Napierala ccb->ccb_h.status = CAM_RESRC_UNAVAIL | CAM_DEV_QFRZN; 21637a03d007SEdward Tomasz Napierala xpt_done(ccb); 21647a03d007SEdward Tomasz Napierala return; 21657a03d007SEdward Tomasz Napierala } 21667a03d007SEdward Tomasz Napierala 2167009ea47eSEdward Tomasz Napierala csio = &ccb->csio; 2168009ea47eSEdward Tomasz Napierala bhssc = (struct iscsi_bhs_scsi_command *)request->ip_bhs; 2169009ea47eSEdward Tomasz Napierala bhssc->bhssc_opcode = ISCSI_BHS_OPCODE_SCSI_COMMAND; 2170009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_F; 2171009ea47eSEdward Tomasz Napierala switch (csio->ccb_h.flags & CAM_DIR_MASK) { 2172009ea47eSEdward Tomasz Napierala case CAM_DIR_IN: 2173009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_R; 2174009ea47eSEdward Tomasz Napierala break; 2175009ea47eSEdward Tomasz Napierala case CAM_DIR_OUT: 2176009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_W; 2177009ea47eSEdward Tomasz Napierala break; 2178009ea47eSEdward Tomasz Napierala } 2179009ea47eSEdward Tomasz Napierala 2180462cf3baSAlexander Motin if ((ccb->ccb_h.flags & CAM_TAG_ACTION_VALID) != 0) { 2181009ea47eSEdward Tomasz Napierala switch (csio->tag_action) { 2182009ea47eSEdward Tomasz Napierala case MSG_HEAD_OF_Q_TAG: 2183009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_HOQ; 2184009ea47eSEdward Tomasz Napierala break; 2185009ea47eSEdward Tomasz Napierala case MSG_ORDERED_Q_TAG: 2186009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_ORDERED; 2187009ea47eSEdward Tomasz Napierala break; 2188009ea47eSEdward Tomasz Napierala case MSG_ACA_TASK: 2189009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_ACA; 2190009ea47eSEdward Tomasz Napierala break; 2191009ea47eSEdward Tomasz Napierala case MSG_SIMPLE_Q_TAG: 2192009ea47eSEdward Tomasz Napierala default: 2193009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_SIMPLE; 2194009ea47eSEdward Tomasz Napierala break; 2195009ea47eSEdward Tomasz Napierala } 2196462cf3baSAlexander Motin } else 2197462cf3baSAlexander Motin bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_UNTAGGED; 2198009ea47eSEdward Tomasz Napierala 2199a9f2f291SEdward Tomasz Napierala bhssc->bhssc_lun = htobe64(CAM_EXTLUN_BYTE_SWIZZLE(ccb->ccb_h.target_lun)); 22007a03d007SEdward Tomasz Napierala bhssc->bhssc_initiator_task_tag = initiator_task_tag; 2201009ea47eSEdward Tomasz Napierala bhssc->bhssc_expected_data_transfer_length = htonl(csio->dxfer_len); 2202009ea47eSEdward Tomasz Napierala KASSERT(csio->cdb_len <= sizeof(bhssc->bhssc_cdb), 2203009ea47eSEdward Tomasz Napierala ("unsupported CDB size %zd", (size_t)csio->cdb_len)); 2204009ea47eSEdward Tomasz Napierala 2205009ea47eSEdward Tomasz Napierala if (csio->ccb_h.flags & CAM_CDB_POINTER) 2206009ea47eSEdward Tomasz Napierala memcpy(&bhssc->bhssc_cdb, csio->cdb_io.cdb_ptr, csio->cdb_len); 2207009ea47eSEdward Tomasz Napierala else 2208009ea47eSEdward Tomasz Napierala memcpy(&bhssc->bhssc_cdb, csio->cdb_io.cdb_bytes, csio->cdb_len); 2209009ea47eSEdward Tomasz Napierala 2210009ea47eSEdward Tomasz Napierala if (is->is_immediate_data && 2211009ea47eSEdward Tomasz Napierala (csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT) { 2212009ea47eSEdward Tomasz Napierala len = csio->dxfer_len; 2213009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "adding %zd of immediate data", len); 2214009ea47eSEdward Tomasz Napierala if (len > is->is_first_burst_length) { 2215009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "len %zd -> %zd", len, is->is_first_burst_length); 2216009ea47eSEdward Tomasz Napierala len = is->is_first_burst_length; 2217009ea47eSEdward Tomasz Napierala } 22183f9e1172SAlexander Motin if (len > is->is_max_data_segment_length) { 22193f9e1172SAlexander Motin ISCSI_SESSION_DEBUG(is, "len %zd -> %zd", len, is->is_max_data_segment_length); 22203f9e1172SAlexander Motin len = is->is_max_data_segment_length; 22213f9e1172SAlexander Motin } 2222009ea47eSEdward Tomasz Napierala 2223009ea47eSEdward Tomasz Napierala error = icl_pdu_append_data(request, csio->data_ptr, len, M_NOWAIT); 2224009ea47eSEdward Tomasz Napierala if (error != 0) { 2225009ea47eSEdward Tomasz Napierala icl_pdu_free(request); 2226009ea47eSEdward Tomasz Napierala if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 2227009ea47eSEdward Tomasz Napierala xpt_freeze_devq(ccb->ccb_h.path, 1); 2228009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 2229009ea47eSEdward Tomasz Napierala } 2230009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_RESRC_UNAVAIL | CAM_DEV_QFRZN; 2231009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2232009ea47eSEdward Tomasz Napierala return; 2233009ea47eSEdward Tomasz Napierala } 2234009ea47eSEdward Tomasz Napierala } 2235009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(request); 2236009ea47eSEdward Tomasz Napierala } 2237009ea47eSEdward Tomasz Napierala 2238009ea47eSEdward Tomasz Napierala static void 2239009ea47eSEdward Tomasz Napierala iscsi_action(struct cam_sim *sim, union ccb *ccb) 2240009ea47eSEdward Tomasz Napierala { 2241009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 2242009ea47eSEdward Tomasz Napierala 2243009ea47eSEdward Tomasz Napierala is = cam_sim_softc(sim); 2244009ea47eSEdward Tomasz Napierala 2245009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 2246009ea47eSEdward Tomasz Napierala 2247f1f12e40SEdward Tomasz Napierala if (is->is_terminating || 2248f1f12e40SEdward Tomasz Napierala (is->is_connected == false && fail_on_disconnection)) { 2249009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_DEV_NOT_THERE; 2250009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2251009ea47eSEdward Tomasz Napierala return; 2252009ea47eSEdward Tomasz Napierala } 2253009ea47eSEdward Tomasz Napierala 2254009ea47eSEdward Tomasz Napierala switch (ccb->ccb_h.func_code) { 2255009ea47eSEdward Tomasz Napierala case XPT_PATH_INQ: 2256009ea47eSEdward Tomasz Napierala { 2257009ea47eSEdward Tomasz Napierala struct ccb_pathinq *cpi = &ccb->cpi; 2258009ea47eSEdward Tomasz Napierala 2259009ea47eSEdward Tomasz Napierala cpi->version_num = 1; 2260009ea47eSEdward Tomasz Napierala cpi->hba_inquiry = PI_TAG_ABLE; 2261009ea47eSEdward Tomasz Napierala cpi->target_sprt = 0; 2262a9f2f291SEdward Tomasz Napierala cpi->hba_misc = PIM_EXTLUNS; 2263009ea47eSEdward Tomasz Napierala cpi->hba_eng_cnt = 0; 2264009ea47eSEdward Tomasz Napierala cpi->max_target = 0; 226517cf3eb1SEdward Tomasz Napierala /* 226617cf3eb1SEdward Tomasz Napierala * Note that the variable below is only relevant for targets 226717cf3eb1SEdward Tomasz Napierala * that don't claim compliance with anything above SPC2, which 226817cf3eb1SEdward Tomasz Napierala * means they don't support REPORT_LUNS. 226917cf3eb1SEdward Tomasz Napierala */ 227017cf3eb1SEdward Tomasz Napierala cpi->max_lun = 255; 2271a9f2f291SEdward Tomasz Napierala cpi->initiator_id = ~0; 22727843bd03SEdward Tomasz Napierala strlcpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); 22737843bd03SEdward Tomasz Napierala strlcpy(cpi->hba_vid, "iSCSI", HBA_IDLEN); 22747843bd03SEdward Tomasz Napierala strlcpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); 2275009ea47eSEdward Tomasz Napierala cpi->unit_number = cam_sim_unit(sim); 2276009ea47eSEdward Tomasz Napierala cpi->bus_id = cam_sim_bus(sim); 2277009ea47eSEdward Tomasz Napierala cpi->base_transfer_speed = 150000; /* XXX */ 2278009ea47eSEdward Tomasz Napierala cpi->transport = XPORT_ISCSI; 2279009ea47eSEdward Tomasz Napierala cpi->transport_version = 0; 2280009ea47eSEdward Tomasz Napierala cpi->protocol = PROTO_SCSI; 2281009ea47eSEdward Tomasz Napierala cpi->protocol_version = SCSI_REV_SPC3; 2282009ea47eSEdward Tomasz Napierala cpi->maxio = MAXPHYS; 2283009ea47eSEdward Tomasz Napierala cpi->ccb_h.status = CAM_REQ_CMP; 2284009ea47eSEdward Tomasz Napierala break; 2285009ea47eSEdward Tomasz Napierala } 2286462cf3baSAlexander Motin case XPT_GET_TRAN_SETTINGS: 2287462cf3baSAlexander Motin { 2288462cf3baSAlexander Motin struct ccb_trans_settings *cts; 2289462cf3baSAlexander Motin struct ccb_trans_settings_scsi *scsi; 2290462cf3baSAlexander Motin 2291462cf3baSAlexander Motin cts = &ccb->cts; 2292462cf3baSAlexander Motin scsi = &cts->proto_specific.scsi; 2293462cf3baSAlexander Motin 2294462cf3baSAlexander Motin cts->protocol = PROTO_SCSI; 2295462cf3baSAlexander Motin cts->protocol_version = SCSI_REV_SPC3; 2296462cf3baSAlexander Motin cts->transport = XPORT_ISCSI; 2297462cf3baSAlexander Motin cts->transport_version = 0; 2298462cf3baSAlexander Motin scsi->valid = CTS_SCSI_VALID_TQ; 2299462cf3baSAlexander Motin scsi->flags = CTS_SCSI_FLAGS_TAG_ENB; 2300462cf3baSAlexander Motin cts->ccb_h.status = CAM_REQ_CMP; 2301462cf3baSAlexander Motin break; 2302462cf3baSAlexander Motin } 2303009ea47eSEdward Tomasz Napierala case XPT_CALC_GEOMETRY: 2304009ea47eSEdward Tomasz Napierala cam_calc_geometry(&ccb->ccg, /*extended*/1); 2305009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_REQ_CMP; 2306009ea47eSEdward Tomasz Napierala break; 2307009ea47eSEdward Tomasz Napierala #if 0 2308009ea47eSEdward Tomasz Napierala /* 2309009ea47eSEdward Tomasz Napierala * XXX: What's the point? 2310009ea47eSEdward Tomasz Napierala */ 2311009ea47eSEdward Tomasz Napierala case XPT_RESET_BUS: 2312009ea47eSEdward Tomasz Napierala case XPT_TERM_IO: 2313009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "faking success for reset, abort, or term_io"); 2314009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_REQ_CMP; 2315009ea47eSEdward Tomasz Napierala break; 2316009ea47eSEdward Tomasz Napierala #endif 2317aa75114cSAlexander Motin case XPT_ABORT: 2318aa75114cSAlexander Motin iscsi_action_abort(is, ccb); 2319aa75114cSAlexander Motin return; 2320009ea47eSEdward Tomasz Napierala case XPT_SCSI_IO: 2321009ea47eSEdward Tomasz Napierala iscsi_action_scsiio(is, ccb); 2322009ea47eSEdward Tomasz Napierala return; 2323009ea47eSEdward Tomasz Napierala default: 2324009ea47eSEdward Tomasz Napierala #if 0 2325009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "got unsupported code 0x%x", ccb->ccb_h.func_code); 2326009ea47eSEdward Tomasz Napierala #endif 2327009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_FUNC_NOTAVAIL; 2328009ea47eSEdward Tomasz Napierala break; 2329009ea47eSEdward Tomasz Napierala } 2330009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2331009ea47eSEdward Tomasz Napierala } 2332009ea47eSEdward Tomasz Napierala 2333009ea47eSEdward Tomasz Napierala static void 2334009ea47eSEdward Tomasz Napierala iscsi_poll(struct cam_sim *sim) 2335009ea47eSEdward Tomasz Napierala { 2336009ea47eSEdward Tomasz Napierala 2337009ea47eSEdward Tomasz Napierala KASSERT(0, ("%s: you're not supposed to be here", __func__)); 2338009ea47eSEdward Tomasz Napierala } 2339009ea47eSEdward Tomasz Napierala 2340009ea47eSEdward Tomasz Napierala static void 2341481b36c6SSteven Hartland iscsi_terminate_sessions(struct iscsi_softc *sc) 2342009ea47eSEdward Tomasz Napierala { 2343009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 2344009ea47eSEdward Tomasz Napierala 2345481b36c6SSteven Hartland sx_slock(&sc->sc_lock); 2346481b36c6SSteven Hartland TAILQ_FOREACH(is, &sc->sc_sessions, is_next) 2347481b36c6SSteven Hartland iscsi_session_terminate(is); 2348481b36c6SSteven Hartland while(!TAILQ_EMPTY(&sc->sc_sessions)) { 2349481b36c6SSteven Hartland ISCSI_DEBUG("waiting for sessions to terminate"); 2350481b36c6SSteven Hartland cv_wait(&sc->sc_cv, &sc->sc_lock); 2351481b36c6SSteven Hartland } 2352481b36c6SSteven Hartland ISCSI_DEBUG("all sessions terminated"); 2353481b36c6SSteven Hartland sx_sunlock(&sc->sc_lock); 2354481b36c6SSteven Hartland } 2355481b36c6SSteven Hartland 2356481b36c6SSteven Hartland static void 2357481b36c6SSteven Hartland iscsi_shutdown_pre(struct iscsi_softc *sc) 2358481b36c6SSteven Hartland { 2359481b36c6SSteven Hartland struct iscsi_session *is; 2360481b36c6SSteven Hartland 2361481b36c6SSteven Hartland if (!fail_on_shutdown) 2362481b36c6SSteven Hartland return; 2363009ea47eSEdward Tomasz Napierala 2364e553ca49SEdward Tomasz Napierala /* 2365e553ca49SEdward Tomasz Napierala * If we have any sessions waiting for reconnection, request 2366e553ca49SEdward Tomasz Napierala * maintenance thread to fail them immediately instead of waiting 2367e553ca49SEdward Tomasz Napierala * for reconnect timeout. 2368481b36c6SSteven Hartland * 2369481b36c6SSteven Hartland * This prevents LUNs with mounted filesystems that are supported 2370481b36c6SSteven Hartland * by disconnected iSCSI sessions from hanging, however it will 2371481b36c6SSteven Hartland * fail all queued BIOs. 2372e553ca49SEdward Tomasz Napierala */ 2373481b36c6SSteven Hartland ISCSI_DEBUG("forcing failing all disconnected sessions due to shutdown"); 2374481b36c6SSteven Hartland 2375481b36c6SSteven Hartland fail_on_disconnection = 1; 2376481b36c6SSteven Hartland 2377009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 2378e553ca49SEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 2379e553ca49SEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 2380481b36c6SSteven Hartland if (!is->is_connected) { 2381481b36c6SSteven Hartland ISCSI_SESSION_DEBUG(is, "force failing disconnected session early"); 2382e553ca49SEdward Tomasz Napierala iscsi_session_reconnect(is); 2383481b36c6SSteven Hartland } 2384e553ca49SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 2385e553ca49SEdward Tomasz Napierala } 2386009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 2387009ea47eSEdward Tomasz Napierala } 2388009ea47eSEdward Tomasz Napierala 2389481b36c6SSteven Hartland static void 2390481b36c6SSteven Hartland iscsi_shutdown_post(struct iscsi_softc *sc) 2391481b36c6SSteven Hartland { 2392481b36c6SSteven Hartland 2393481b36c6SSteven Hartland ISCSI_DEBUG("removing all sessions due to shutdown"); 2394481b36c6SSteven Hartland iscsi_terminate_sessions(sc); 2395481b36c6SSteven Hartland } 2396481b36c6SSteven Hartland 2397009ea47eSEdward Tomasz Napierala static int 2398009ea47eSEdward Tomasz Napierala iscsi_load(void) 2399009ea47eSEdward Tomasz Napierala { 2400009ea47eSEdward Tomasz Napierala int error; 2401009ea47eSEdward Tomasz Napierala 2402009ea47eSEdward Tomasz Napierala sc = malloc(sizeof(*sc), M_ISCSI, M_ZERO | M_WAITOK); 2403009ea47eSEdward Tomasz Napierala sx_init(&sc->sc_lock, "iscsi"); 2404009ea47eSEdward Tomasz Napierala TAILQ_INIT(&sc->sc_sessions); 2405009ea47eSEdward Tomasz Napierala cv_init(&sc->sc_cv, "iscsi_cv"); 2406009ea47eSEdward Tomasz Napierala 2407009ea47eSEdward Tomasz Napierala iscsi_outstanding_zone = uma_zcreate("iscsi_outstanding", 2408009ea47eSEdward Tomasz Napierala sizeof(struct iscsi_outstanding), NULL, NULL, NULL, NULL, 2409c28c09c1SEdward Tomasz Napierala UMA_ALIGN_PTR, 0); 2410009ea47eSEdward Tomasz Napierala 2411009ea47eSEdward Tomasz Napierala error = make_dev_p(MAKEDEV_CHECKNAME, &sc->sc_cdev, &iscsi_cdevsw, 2412009ea47eSEdward Tomasz Napierala NULL, UID_ROOT, GID_WHEEL, 0600, "iscsi"); 2413009ea47eSEdward Tomasz Napierala if (error != 0) { 2414009ea47eSEdward Tomasz Napierala ISCSI_WARN("failed to create device node, error %d", error); 2415009ea47eSEdward Tomasz Napierala return (error); 2416009ea47eSEdward Tomasz Napierala } 2417009ea47eSEdward Tomasz Napierala sc->sc_cdev->si_drv1 = sc; 2418009ea47eSEdward Tomasz Napierala 2419481b36c6SSteven Hartland sc->sc_shutdown_pre_eh = EVENTHANDLER_REGISTER(shutdown_pre_sync, 2420481b36c6SSteven Hartland iscsi_shutdown_pre, sc, SHUTDOWN_PRI_FIRST); 2421481b36c6SSteven Hartland /* 2422481b36c6SSteven Hartland * shutdown_post_sync needs to run after filesystem shutdown and before 2423481b36c6SSteven Hartland * CAM shutdown - otherwise when rebooting with an iSCSI session that is 2424481b36c6SSteven Hartland * disconnected but has outstanding requests, dashutdown() will hang on 2425481b36c6SSteven Hartland * cam_periph_runccb(). 2426481b36c6SSteven Hartland */ 2427481b36c6SSteven Hartland sc->sc_shutdown_post_eh = EVENTHANDLER_REGISTER(shutdown_post_sync, 2428481b36c6SSteven Hartland iscsi_shutdown_post, sc, SHUTDOWN_PRI_DEFAULT - 1); 2429009ea47eSEdward Tomasz Napierala 2430009ea47eSEdward Tomasz Napierala return (0); 2431009ea47eSEdward Tomasz Napierala } 2432009ea47eSEdward Tomasz Napierala 2433009ea47eSEdward Tomasz Napierala static int 2434009ea47eSEdward Tomasz Napierala iscsi_unload(void) 2435009ea47eSEdward Tomasz Napierala { 2436009ea47eSEdward Tomasz Napierala 2437a667cf73SEdward Tomasz Napierala if (sc->sc_cdev != NULL) { 2438009ea47eSEdward Tomasz Napierala ISCSI_DEBUG("removing device node"); 2439009ea47eSEdward Tomasz Napierala destroy_dev(sc->sc_cdev); 2440009ea47eSEdward Tomasz Napierala ISCSI_DEBUG("device node removed"); 2441a667cf73SEdward Tomasz Napierala } 2442009ea47eSEdward Tomasz Napierala 2443481b36c6SSteven Hartland if (sc->sc_shutdown_pre_eh != NULL) 2444481b36c6SSteven Hartland EVENTHANDLER_DEREGISTER(shutdown_pre_sync, sc->sc_shutdown_pre_eh); 2445481b36c6SSteven Hartland if (sc->sc_shutdown_post_eh != NULL) 2446481b36c6SSteven Hartland EVENTHANDLER_DEREGISTER(shutdown_post_sync, sc->sc_shutdown_post_eh); 2447009ea47eSEdward Tomasz Napierala 2448481b36c6SSteven Hartland iscsi_terminate_sessions(sc); 2449009ea47eSEdward Tomasz Napierala 2450009ea47eSEdward Tomasz Napierala uma_zdestroy(iscsi_outstanding_zone); 2451009ea47eSEdward Tomasz Napierala sx_destroy(&sc->sc_lock); 2452009ea47eSEdward Tomasz Napierala cv_destroy(&sc->sc_cv); 2453009ea47eSEdward Tomasz Napierala free(sc, M_ISCSI); 2454009ea47eSEdward Tomasz Napierala return (0); 2455009ea47eSEdward Tomasz Napierala } 2456009ea47eSEdward Tomasz Napierala 2457009ea47eSEdward Tomasz Napierala static int 2458009ea47eSEdward Tomasz Napierala iscsi_quiesce(void) 2459009ea47eSEdward Tomasz Napierala { 2460009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 2461009ea47eSEdward Tomasz Napierala if (!TAILQ_EMPTY(&sc->sc_sessions)) { 2462009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 2463009ea47eSEdward Tomasz Napierala return (EBUSY); 2464009ea47eSEdward Tomasz Napierala } 2465009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 2466009ea47eSEdward Tomasz Napierala return (0); 2467009ea47eSEdward Tomasz Napierala } 2468009ea47eSEdward Tomasz Napierala 2469009ea47eSEdward Tomasz Napierala static int 2470009ea47eSEdward Tomasz Napierala iscsi_modevent(module_t mod, int what, void *arg) 2471009ea47eSEdward Tomasz Napierala { 2472009ea47eSEdward Tomasz Napierala int error; 2473009ea47eSEdward Tomasz Napierala 2474009ea47eSEdward Tomasz Napierala switch (what) { 2475009ea47eSEdward Tomasz Napierala case MOD_LOAD: 2476009ea47eSEdward Tomasz Napierala error = iscsi_load(); 2477009ea47eSEdward Tomasz Napierala break; 2478009ea47eSEdward Tomasz Napierala case MOD_UNLOAD: 2479009ea47eSEdward Tomasz Napierala error = iscsi_unload(); 2480009ea47eSEdward Tomasz Napierala break; 2481009ea47eSEdward Tomasz Napierala case MOD_QUIESCE: 2482009ea47eSEdward Tomasz Napierala error = iscsi_quiesce(); 2483009ea47eSEdward Tomasz Napierala break; 2484009ea47eSEdward Tomasz Napierala default: 2485009ea47eSEdward Tomasz Napierala error = EINVAL; 2486009ea47eSEdward Tomasz Napierala break; 2487009ea47eSEdward Tomasz Napierala } 2488009ea47eSEdward Tomasz Napierala return (error); 2489009ea47eSEdward Tomasz Napierala } 2490009ea47eSEdward Tomasz Napierala 2491009ea47eSEdward Tomasz Napierala moduledata_t iscsi_data = { 2492009ea47eSEdward Tomasz Napierala "iscsi", 2493009ea47eSEdward Tomasz Napierala iscsi_modevent, 2494009ea47eSEdward Tomasz Napierala 0 2495009ea47eSEdward Tomasz Napierala }; 2496009ea47eSEdward Tomasz Napierala 2497009ea47eSEdward Tomasz Napierala DECLARE_MODULE(iscsi, iscsi_data, SI_SUB_DRIVERS, SI_ORDER_MIDDLE); 2498009ea47eSEdward Tomasz Napierala MODULE_DEPEND(iscsi, cam, 1, 1, 1); 2499009ea47eSEdward Tomasz Napierala MODULE_DEPEND(iscsi, icl, 1, 1, 1); 2500