1009ea47eSEdward Tomasz Napierala /*- 2009ea47eSEdward Tomasz Napierala * Copyright (c) 2012 The FreeBSD Foundation 3009ea47eSEdward Tomasz Napierala * All rights reserved. 4009ea47eSEdward Tomasz Napierala * 5009ea47eSEdward Tomasz Napierala * This software was developed by Edward Tomasz Napierala under sponsorship 6009ea47eSEdward Tomasz Napierala * from the FreeBSD Foundation. 7009ea47eSEdward Tomasz Napierala * 8009ea47eSEdward Tomasz Napierala * Redistribution and use in source and binary forms, with or without 9009ea47eSEdward Tomasz Napierala * modification, are permitted provided that the following conditions 10009ea47eSEdward Tomasz Napierala * are met: 11009ea47eSEdward Tomasz Napierala * 1. Redistributions of source code must retain the above copyright 12009ea47eSEdward Tomasz Napierala * notice, this list of conditions and the following disclaimer. 13009ea47eSEdward Tomasz Napierala * 2. Redistributions in binary form must reproduce the above copyright 14009ea47eSEdward Tomasz Napierala * notice, this list of conditions and the following disclaimer in the 15009ea47eSEdward Tomasz Napierala * documentation and/or other materials provided with the distribution. 16009ea47eSEdward Tomasz Napierala * 17009ea47eSEdward Tomasz Napierala * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18009ea47eSEdward Tomasz Napierala * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19009ea47eSEdward Tomasz Napierala * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20009ea47eSEdward Tomasz Napierala * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21009ea47eSEdward Tomasz Napierala * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22009ea47eSEdward Tomasz Napierala * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23009ea47eSEdward Tomasz Napierala * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24009ea47eSEdward Tomasz Napierala * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25009ea47eSEdward Tomasz Napierala * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26009ea47eSEdward Tomasz Napierala * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27009ea47eSEdward Tomasz Napierala * SUCH DAMAGE. 28009ea47eSEdward Tomasz Napierala * 29009ea47eSEdward Tomasz Napierala */ 30009ea47eSEdward Tomasz Napierala 31b7a65e39SEdward Tomasz Napierala #include <sys/cdefs.h> 32b7a65e39SEdward Tomasz Napierala __FBSDID("$FreeBSD$"); 33b7a65e39SEdward Tomasz Napierala 34009ea47eSEdward Tomasz Napierala #include <sys/param.h> 35009ea47eSEdward Tomasz Napierala #include <sys/condvar.h> 36009ea47eSEdward Tomasz Napierala #include <sys/conf.h> 37a9f2f291SEdward Tomasz Napierala #include <sys/endian.h> 38009ea47eSEdward Tomasz Napierala #include <sys/eventhandler.h> 39009ea47eSEdward Tomasz Napierala #include <sys/file.h> 40009ea47eSEdward Tomasz Napierala #include <sys/kernel.h> 41009ea47eSEdward Tomasz Napierala #include <sys/kthread.h> 42009ea47eSEdward Tomasz Napierala #include <sys/lock.h> 43009ea47eSEdward Tomasz Napierala #include <sys/malloc.h> 44009ea47eSEdward Tomasz Napierala #include <sys/mutex.h> 45009ea47eSEdward Tomasz Napierala #include <sys/module.h> 46f41492b0SEdward Tomasz Napierala #include <sys/socket.h> 47009ea47eSEdward Tomasz Napierala #include <sys/sysctl.h> 48009ea47eSEdward Tomasz Napierala #include <sys/systm.h> 49009ea47eSEdward Tomasz Napierala #include <sys/sx.h> 50009ea47eSEdward Tomasz Napierala #include <vm/uma.h> 51009ea47eSEdward Tomasz Napierala 52009ea47eSEdward Tomasz Napierala #include <cam/cam.h> 53009ea47eSEdward Tomasz Napierala #include <cam/cam_ccb.h> 54009ea47eSEdward Tomasz Napierala #include <cam/cam_xpt.h> 55009ea47eSEdward Tomasz Napierala #include <cam/cam_debug.h> 56009ea47eSEdward Tomasz Napierala #include <cam/cam_sim.h> 57009ea47eSEdward Tomasz Napierala #include <cam/cam_xpt_sim.h> 58009ea47eSEdward Tomasz Napierala #include <cam/cam_xpt_periph.h> 59009ea47eSEdward Tomasz Napierala #include <cam/cam_periph.h> 60009ea47eSEdward Tomasz Napierala #include <cam/scsi/scsi_all.h> 61009ea47eSEdward Tomasz Napierala #include <cam/scsi/scsi_message.h> 62009ea47eSEdward Tomasz Napierala 63ddc5fd90SEdward Tomasz Napierala #include <dev/iscsi/icl.h> 64321b17ecSEdward Tomasz Napierala #include <dev/iscsi/icl_wrappers.h> 65ddc5fd90SEdward Tomasz Napierala #include <dev/iscsi/iscsi_ioctl.h> 66ddc5fd90SEdward Tomasz Napierala #include <dev/iscsi/iscsi_proto.h> 67ddc5fd90SEdward Tomasz Napierala #include <dev/iscsi/iscsi.h> 68009ea47eSEdward Tomasz Napierala 69009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 70009ea47eSEdward Tomasz Napierala #include <sys/socketvar.h> 71009ea47eSEdward Tomasz Napierala #endif 72009ea47eSEdward Tomasz Napierala 732ebde326SEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 742ebde326SEdward Tomasz Napierala FEATURE(iscsi_kernel_proxy, "iSCSI initiator built with ICL_KERNEL_PROXY"); 752ebde326SEdward Tomasz Napierala #endif 762ebde326SEdward Tomasz Napierala 77009ea47eSEdward Tomasz Napierala /* 78009ea47eSEdward Tomasz Napierala * XXX: This is global so the iscsi_unload() can access it. 79009ea47eSEdward Tomasz Napierala * Think about how to do this properly. 80009ea47eSEdward Tomasz Napierala */ 81009ea47eSEdward Tomasz Napierala static struct iscsi_softc *sc; 82009ea47eSEdward Tomasz Napierala 83009ea47eSEdward Tomasz Napierala SYSCTL_NODE(_kern, OID_AUTO, iscsi, CTLFLAG_RD, 0, "iSCSI initiator"); 84009ea47eSEdward Tomasz Napierala static int debug = 1; 85605a34b0SEdward Tomasz Napierala SYSCTL_INT(_kern_iscsi, OID_AUTO, debug, CTLFLAG_RWTUN, 861f6b2af2SAlexander Motin &debug, 0, "Enable debug messages"); 87009ea47eSEdward Tomasz Napierala static int ping_timeout = 5; 88605a34b0SEdward Tomasz Napierala SYSCTL_INT(_kern_iscsi, OID_AUTO, ping_timeout, CTLFLAG_RWTUN, &ping_timeout, 891f6b2af2SAlexander Motin 0, "Timeout for ping (NOP-Out) requests, in seconds"); 90009ea47eSEdward Tomasz Napierala static int iscsid_timeout = 60; 91605a34b0SEdward Tomasz Napierala SYSCTL_INT(_kern_iscsi, OID_AUTO, iscsid_timeout, CTLFLAG_RWTUN, &iscsid_timeout, 921f6b2af2SAlexander Motin 0, "Time to wait for iscsid(8) to handle reconnection, in seconds"); 93009ea47eSEdward Tomasz Napierala static int login_timeout = 60; 94605a34b0SEdward Tomasz Napierala SYSCTL_INT(_kern_iscsi, OID_AUTO, login_timeout, CTLFLAG_RWTUN, &login_timeout, 951f6b2af2SAlexander Motin 0, "Time to wait for iscsid(8) to finish Login Phase, in seconds"); 96009ea47eSEdward Tomasz Napierala static int maxtags = 255; 97605a34b0SEdward Tomasz Napierala SYSCTL_INT(_kern_iscsi, OID_AUTO, maxtags, CTLFLAG_RWTUN, &maxtags, 981f6b2af2SAlexander Motin 0, "Max number of IO requests queued"); 99f1f12e40SEdward Tomasz Napierala static int fail_on_disconnection = 0; 100f1f12e40SEdward Tomasz Napierala SYSCTL_INT(_kern_iscsi, OID_AUTO, fail_on_disconnection, CTLFLAG_RWTUN, 101f1f12e40SEdward Tomasz Napierala &fail_on_disconnection, 0, "Destroy CAM SIM on connection failure"); 102481b36c6SSteven Hartland static int fail_on_shutdown = 1; 103481b36c6SSteven Hartland SYSCTL_INT(_kern_iscsi, OID_AUTO, fail_on_shutdown, CTLFLAG_RWTUN, 104481b36c6SSteven Hartland &fail_on_shutdown, 0, "Fail disconnected sessions on shutdown"); 105009ea47eSEdward Tomasz Napierala 106009ea47eSEdward Tomasz Napierala static MALLOC_DEFINE(M_ISCSI, "iSCSI", "iSCSI initiator"); 107009ea47eSEdward Tomasz Napierala static uma_zone_t iscsi_outstanding_zone; 108009ea47eSEdward Tomasz Napierala 109009ea47eSEdward Tomasz Napierala #define CONN_SESSION(X) ((struct iscsi_session *)X->ic_prv0) 110009ea47eSEdward Tomasz Napierala #define PDU_SESSION(X) (CONN_SESSION(X->ip_conn)) 111009ea47eSEdward Tomasz Napierala 112009ea47eSEdward Tomasz Napierala #define ISCSI_DEBUG(X, ...) \ 113b1277ad1SEdward Tomasz Napierala do { \ 114b1277ad1SEdward Tomasz Napierala if (debug > 1) \ 115009ea47eSEdward Tomasz Napierala printf("%s: " X "\n", __func__, ## __VA_ARGS__);\ 116009ea47eSEdward Tomasz Napierala } while (0) 117009ea47eSEdward Tomasz Napierala 118009ea47eSEdward Tomasz Napierala #define ISCSI_WARN(X, ...) \ 119b1277ad1SEdward Tomasz Napierala do { \ 120009ea47eSEdward Tomasz Napierala if (debug > 0) { \ 121009ea47eSEdward Tomasz Napierala printf("WARNING: %s: " X "\n", \ 122009ea47eSEdward Tomasz Napierala __func__, ## __VA_ARGS__); \ 123b1277ad1SEdward Tomasz Napierala } \ 124009ea47eSEdward Tomasz Napierala } while (0) 125009ea47eSEdward Tomasz Napierala 126009ea47eSEdward Tomasz Napierala #define ISCSI_SESSION_DEBUG(S, X, ...) \ 127b1277ad1SEdward Tomasz Napierala do { \ 128009ea47eSEdward Tomasz Napierala if (debug > 1) { \ 129009ea47eSEdward Tomasz Napierala printf("%s: %s (%s): " X "\n", \ 130009ea47eSEdward Tomasz Napierala __func__, S->is_conf.isc_target_addr, \ 131009ea47eSEdward Tomasz Napierala S->is_conf.isc_target, ## __VA_ARGS__); \ 132b1277ad1SEdward Tomasz Napierala } \ 133009ea47eSEdward Tomasz Napierala } while (0) 134009ea47eSEdward Tomasz Napierala 135009ea47eSEdward Tomasz Napierala #define ISCSI_SESSION_WARN(S, X, ...) \ 136b1277ad1SEdward Tomasz Napierala do { \ 137009ea47eSEdward Tomasz Napierala if (debug > 0) { \ 138009ea47eSEdward Tomasz Napierala printf("WARNING: %s (%s): " X "\n", \ 139009ea47eSEdward Tomasz Napierala S->is_conf.isc_target_addr, \ 140009ea47eSEdward Tomasz Napierala S->is_conf.isc_target, ## __VA_ARGS__); \ 141b1277ad1SEdward Tomasz Napierala } \ 142009ea47eSEdward Tomasz Napierala } while (0) 143009ea47eSEdward Tomasz Napierala 144009ea47eSEdward Tomasz Napierala #define ISCSI_SESSION_LOCK(X) mtx_lock(&X->is_lock) 145009ea47eSEdward Tomasz Napierala #define ISCSI_SESSION_UNLOCK(X) mtx_unlock(&X->is_lock) 146009ea47eSEdward Tomasz Napierala #define ISCSI_SESSION_LOCK_ASSERT(X) mtx_assert(&X->is_lock, MA_OWNED) 147c215ad3aSAlexander Motin #define ISCSI_SESSION_LOCK_ASSERT_NOT(X) mtx_assert(&X->is_lock, MA_NOTOWNED) 148009ea47eSEdward Tomasz Napierala 149009ea47eSEdward Tomasz Napierala static int iscsi_ioctl(struct cdev *dev, u_long cmd, caddr_t arg, 150009ea47eSEdward Tomasz Napierala int mode, struct thread *td); 151009ea47eSEdward Tomasz Napierala 152009ea47eSEdward Tomasz Napierala static struct cdevsw iscsi_cdevsw = { 153009ea47eSEdward Tomasz Napierala .d_version = D_VERSION, 154009ea47eSEdward Tomasz Napierala .d_ioctl = iscsi_ioctl, 155009ea47eSEdward Tomasz Napierala .d_name = "iscsi", 156009ea47eSEdward Tomasz Napierala }; 157009ea47eSEdward Tomasz Napierala 158009ea47eSEdward Tomasz Napierala static void iscsi_pdu_queue_locked(struct icl_pdu *request); 159009ea47eSEdward Tomasz Napierala static void iscsi_pdu_queue(struct icl_pdu *request); 160009ea47eSEdward Tomasz Napierala static void iscsi_pdu_update_statsn(const struct icl_pdu *response); 161009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_nop_in(struct icl_pdu *response); 162009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_scsi_response(struct icl_pdu *response); 163aa75114cSAlexander Motin static void iscsi_pdu_handle_task_response(struct icl_pdu *response); 164009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_data_in(struct icl_pdu *response); 165009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_logout_response(struct icl_pdu *response); 166009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_r2t(struct icl_pdu *response); 167009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_async_message(struct icl_pdu *response); 168009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_reject(struct icl_pdu *response); 169009ea47eSEdward Tomasz Napierala static void iscsi_session_reconnect(struct iscsi_session *is); 170009ea47eSEdward Tomasz Napierala static void iscsi_session_terminate(struct iscsi_session *is); 171009ea47eSEdward Tomasz Napierala static void iscsi_action(struct cam_sim *sim, union ccb *ccb); 172009ea47eSEdward Tomasz Napierala static void iscsi_poll(struct cam_sim *sim); 173009ea47eSEdward Tomasz Napierala static struct iscsi_outstanding *iscsi_outstanding_find(struct iscsi_session *is, 174009ea47eSEdward Tomasz Napierala uint32_t initiator_task_tag); 175aa75114cSAlexander Motin static struct iscsi_outstanding *iscsi_outstanding_add(struct iscsi_session *is, 176604c023fSEdward Tomasz Napierala struct icl_pdu *request, union ccb *ccb, 177604c023fSEdward Tomasz Napierala uint32_t *initiator_task_tagp); 178009ea47eSEdward Tomasz Napierala static void iscsi_outstanding_remove(struct iscsi_session *is, 179009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io); 180009ea47eSEdward Tomasz Napierala 181009ea47eSEdward Tomasz Napierala static bool 182009ea47eSEdward Tomasz Napierala iscsi_pdu_prepare(struct icl_pdu *request) 183009ea47eSEdward Tomasz Napierala { 184009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 185009ea47eSEdward Tomasz Napierala struct iscsi_bhs_scsi_command *bhssc; 186009ea47eSEdward Tomasz Napierala 187009ea47eSEdward Tomasz Napierala is = PDU_SESSION(request); 188009ea47eSEdward Tomasz Napierala 189009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 190009ea47eSEdward Tomasz Napierala 191009ea47eSEdward Tomasz Napierala /* 192009ea47eSEdward Tomasz Napierala * We're only using fields common for all the request 193009ea47eSEdward Tomasz Napierala * (initiator -> target) PDUs. 194009ea47eSEdward Tomasz Napierala */ 195009ea47eSEdward Tomasz Napierala bhssc = (struct iscsi_bhs_scsi_command *)request->ip_bhs; 196009ea47eSEdward Tomasz Napierala 197009ea47eSEdward Tomasz Napierala /* 198009ea47eSEdward Tomasz Napierala * Data-Out PDU does not contain CmdSN. 199009ea47eSEdward Tomasz Napierala */ 200009ea47eSEdward Tomasz Napierala if (bhssc->bhssc_opcode != ISCSI_BHS_OPCODE_SCSI_DATA_OUT) { 2012124e3b0SAlexander Motin if (ISCSI_SNGT(is->is_cmdsn, is->is_maxcmdsn) && 202009ea47eSEdward Tomasz Napierala (bhssc->bhssc_opcode & ISCSI_BHS_OPCODE_IMMEDIATE) == 0) { 203009ea47eSEdward Tomasz Napierala /* 204009ea47eSEdward Tomasz Napierala * Current MaxCmdSN prevents us from sending any more 205009ea47eSEdward Tomasz Napierala * SCSI Command PDUs to the target; postpone the PDU. 206009ea47eSEdward Tomasz Napierala * It will get resent by either iscsi_pdu_queue(), 207009ea47eSEdward Tomasz Napierala * or by maintenance thread. 208009ea47eSEdward Tomasz Napierala */ 209009ea47eSEdward Tomasz Napierala #if 0 2102124e3b0SAlexander Motin ISCSI_SESSION_DEBUG(is, "postponing send, CmdSN %u, " 2112124e3b0SAlexander Motin "ExpCmdSN %u, MaxCmdSN %u, opcode 0x%x", 2122124e3b0SAlexander Motin is->is_cmdsn, is->is_expcmdsn, is->is_maxcmdsn, 2132124e3b0SAlexander Motin bhssc->bhssc_opcode); 214009ea47eSEdward Tomasz Napierala #endif 215009ea47eSEdward Tomasz Napierala return (true); 216009ea47eSEdward Tomasz Napierala } 217009ea47eSEdward Tomasz Napierala bhssc->bhssc_cmdsn = htonl(is->is_cmdsn); 218009ea47eSEdward Tomasz Napierala if ((bhssc->bhssc_opcode & ISCSI_BHS_OPCODE_IMMEDIATE) == 0) 219009ea47eSEdward Tomasz Napierala is->is_cmdsn++; 220009ea47eSEdward Tomasz Napierala } 221009ea47eSEdward Tomasz Napierala bhssc->bhssc_expstatsn = htonl(is->is_statsn + 1); 222009ea47eSEdward Tomasz Napierala 223009ea47eSEdward Tomasz Napierala return (false); 224009ea47eSEdward Tomasz Napierala } 225009ea47eSEdward Tomasz Napierala 226009ea47eSEdward Tomasz Napierala static void 227009ea47eSEdward Tomasz Napierala iscsi_session_send_postponed(struct iscsi_session *is) 228009ea47eSEdward Tomasz Napierala { 229009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 230009ea47eSEdward Tomasz Napierala bool postpone; 231009ea47eSEdward Tomasz Napierala 232009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 233009ea47eSEdward Tomasz Napierala 23416c158a5SEdward Tomasz Napierala while (!STAILQ_EMPTY(&is->is_postponed)) { 23516c158a5SEdward Tomasz Napierala request = STAILQ_FIRST(&is->is_postponed); 236009ea47eSEdward Tomasz Napierala postpone = iscsi_pdu_prepare(request); 237009ea47eSEdward Tomasz Napierala if (postpone) 238009ea47eSEdward Tomasz Napierala break; 23916c158a5SEdward Tomasz Napierala STAILQ_REMOVE_HEAD(&is->is_postponed, ip_next); 240009ea47eSEdward Tomasz Napierala icl_pdu_queue(request); 241009ea47eSEdward Tomasz Napierala } 242009ea47eSEdward Tomasz Napierala } 243009ea47eSEdward Tomasz Napierala 244009ea47eSEdward Tomasz Napierala static void 245009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(struct icl_pdu *request) 246009ea47eSEdward Tomasz Napierala { 247009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 248009ea47eSEdward Tomasz Napierala bool postpone; 249009ea47eSEdward Tomasz Napierala 250009ea47eSEdward Tomasz Napierala is = PDU_SESSION(request); 251009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 252009ea47eSEdward Tomasz Napierala iscsi_session_send_postponed(is); 253009ea47eSEdward Tomasz Napierala postpone = iscsi_pdu_prepare(request); 254009ea47eSEdward Tomasz Napierala if (postpone) { 25516c158a5SEdward Tomasz Napierala STAILQ_INSERT_TAIL(&is->is_postponed, request, ip_next); 256009ea47eSEdward Tomasz Napierala return; 257009ea47eSEdward Tomasz Napierala } 258009ea47eSEdward Tomasz Napierala icl_pdu_queue(request); 259009ea47eSEdward Tomasz Napierala } 260009ea47eSEdward Tomasz Napierala 261009ea47eSEdward Tomasz Napierala static void 262009ea47eSEdward Tomasz Napierala iscsi_pdu_queue(struct icl_pdu *request) 263009ea47eSEdward Tomasz Napierala { 264009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 265009ea47eSEdward Tomasz Napierala 266009ea47eSEdward Tomasz Napierala is = PDU_SESSION(request); 267009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 268009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(request); 269009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 270009ea47eSEdward Tomasz Napierala } 271009ea47eSEdward Tomasz Napierala 272009ea47eSEdward Tomasz Napierala static void 273009ea47eSEdward Tomasz Napierala iscsi_session_logout(struct iscsi_session *is) 274009ea47eSEdward Tomasz Napierala { 275009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 276009ea47eSEdward Tomasz Napierala struct iscsi_bhs_logout_request *bhslr; 277009ea47eSEdward Tomasz Napierala 278d2d52b00SEdward Tomasz Napierala request = icl_pdu_new(is->is_conn, M_NOWAIT); 279009ea47eSEdward Tomasz Napierala if (request == NULL) 280009ea47eSEdward Tomasz Napierala return; 281009ea47eSEdward Tomasz Napierala 282009ea47eSEdward Tomasz Napierala bhslr = (struct iscsi_bhs_logout_request *)request->ip_bhs; 283009ea47eSEdward Tomasz Napierala bhslr->bhslr_opcode = ISCSI_BHS_OPCODE_LOGOUT_REQUEST; 284009ea47eSEdward Tomasz Napierala bhslr->bhslr_reason = BHSLR_REASON_CLOSE_SESSION; 285009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(request); 286009ea47eSEdward Tomasz Napierala } 287009ea47eSEdward Tomasz Napierala 288009ea47eSEdward Tomasz Napierala static void 289aa75114cSAlexander Motin iscsi_session_terminate_task(struct iscsi_session *is, 290aa75114cSAlexander Motin struct iscsi_outstanding *io, bool requeue) 291aa75114cSAlexander Motin { 292aa75114cSAlexander Motin 293e204e2cdSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 294e204e2cdSEdward Tomasz Napierala 295aa75114cSAlexander Motin if (io->io_ccb != NULL) { 296aa75114cSAlexander Motin io->io_ccb->ccb_h.status &= ~(CAM_SIM_QUEUED | CAM_STATUS_MASK); 297aa75114cSAlexander Motin if (requeue) 298aa75114cSAlexander Motin io->io_ccb->ccb_h.status |= CAM_REQUEUE_REQ; 299aa75114cSAlexander Motin else 300aa75114cSAlexander Motin io->io_ccb->ccb_h.status |= CAM_REQ_ABORTED; 301aa75114cSAlexander Motin if ((io->io_ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 302aa75114cSAlexander Motin io->io_ccb->ccb_h.status |= CAM_DEV_QFRZN; 303aa75114cSAlexander Motin xpt_freeze_devq(io->io_ccb->ccb_h.path, 1); 304aa75114cSAlexander Motin ISCSI_SESSION_DEBUG(is, "freezing devq"); 305aa75114cSAlexander Motin } 306aa75114cSAlexander Motin xpt_done(io->io_ccb); 307aa75114cSAlexander Motin } 308aa75114cSAlexander Motin iscsi_outstanding_remove(is, io); 309aa75114cSAlexander Motin } 310aa75114cSAlexander Motin 311aa75114cSAlexander Motin static void 312009ea47eSEdward Tomasz Napierala iscsi_session_terminate_tasks(struct iscsi_session *is, bool requeue) 313009ea47eSEdward Tomasz Napierala { 314009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io, *tmp; 315009ea47eSEdward Tomasz Napierala 316009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 317009ea47eSEdward Tomasz Napierala 318009ea47eSEdward Tomasz Napierala TAILQ_FOREACH_SAFE(io, &is->is_outstanding, io_next, tmp) { 319aa75114cSAlexander Motin iscsi_session_terminate_task(is, io, requeue); 320009ea47eSEdward Tomasz Napierala } 321009ea47eSEdward Tomasz Napierala } 322009ea47eSEdward Tomasz Napierala 323009ea47eSEdward Tomasz Napierala static void 324f1f12e40SEdward Tomasz Napierala iscsi_session_cleanup(struct iscsi_session *is, bool destroy_sim) 325009ea47eSEdward Tomasz Napierala { 326009ea47eSEdward Tomasz Napierala struct icl_pdu *pdu; 327009ea47eSEdward Tomasz Napierala 328f1f12e40SEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 329009ea47eSEdward Tomasz Napierala 330009ea47eSEdward Tomasz Napierala /* 331009ea47eSEdward Tomasz Napierala * Don't queue any new PDUs. 332009ea47eSEdward Tomasz Napierala */ 333009ea47eSEdward Tomasz Napierala if (is->is_sim != NULL && is->is_simq_frozen == false) { 334009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing"); 335009ea47eSEdward Tomasz Napierala xpt_freeze_simq(is->is_sim, 1); 336009ea47eSEdward Tomasz Napierala is->is_simq_frozen = true; 337009ea47eSEdward Tomasz Napierala } 338009ea47eSEdward Tomasz Napierala 339009ea47eSEdward Tomasz Napierala /* 340009ea47eSEdward Tomasz Napierala * Remove postponed PDUs. 341009ea47eSEdward Tomasz Napierala */ 34216c158a5SEdward Tomasz Napierala while (!STAILQ_EMPTY(&is->is_postponed)) { 34316c158a5SEdward Tomasz Napierala pdu = STAILQ_FIRST(&is->is_postponed); 34416c158a5SEdward Tomasz Napierala STAILQ_REMOVE_HEAD(&is->is_postponed, ip_next); 345009ea47eSEdward Tomasz Napierala icl_pdu_free(pdu); 346009ea47eSEdward Tomasz Napierala } 347009ea47eSEdward Tomasz Napierala 348f1f12e40SEdward Tomasz Napierala if (destroy_sim == false) { 349009ea47eSEdward Tomasz Napierala /* 350009ea47eSEdward Tomasz Napierala * Terminate SCSI tasks, asking CAM to requeue them. 351009ea47eSEdward Tomasz Napierala */ 352009ea47eSEdward Tomasz Napierala iscsi_session_terminate_tasks(is, true); 353f1f12e40SEdward Tomasz Napierala return; 354f1f12e40SEdward Tomasz Napierala } 355f1f12e40SEdward Tomasz Napierala 356f1f12e40SEdward Tomasz Napierala iscsi_session_terminate_tasks(is, false); 357f1f12e40SEdward Tomasz Napierala 358f1f12e40SEdward Tomasz Napierala if (is->is_sim == NULL) 359f1f12e40SEdward Tomasz Napierala return; 360f1f12e40SEdward Tomasz Napierala 361f1f12e40SEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "deregistering SIM"); 362f1f12e40SEdward Tomasz Napierala xpt_async(AC_LOST_DEVICE, is->is_path, NULL); 363f1f12e40SEdward Tomasz Napierala 364f1f12e40SEdward Tomasz Napierala if (is->is_simq_frozen) { 365f1f12e40SEdward Tomasz Napierala xpt_release_simq(is->is_sim, 1); 366f1f12e40SEdward Tomasz Napierala is->is_simq_frozen = false; 367f1f12e40SEdward Tomasz Napierala } 368f1f12e40SEdward Tomasz Napierala 369f1f12e40SEdward Tomasz Napierala xpt_free_path(is->is_path); 370f1f12e40SEdward Tomasz Napierala is->is_path = NULL; 371f1f12e40SEdward Tomasz Napierala xpt_bus_deregister(cam_sim_path(is->is_sim)); 372f1f12e40SEdward Tomasz Napierala cam_sim_free(is->is_sim, TRUE /*free_devq*/); 373f1f12e40SEdward Tomasz Napierala is->is_sim = NULL; 374f1f12e40SEdward Tomasz Napierala is->is_devq = NULL; 375f1f12e40SEdward Tomasz Napierala } 376f1f12e40SEdward Tomasz Napierala 377f1f12e40SEdward Tomasz Napierala static void 378f1f12e40SEdward Tomasz Napierala iscsi_maintenance_thread_reconnect(struct iscsi_session *is) 379f1f12e40SEdward Tomasz Napierala { 380f1f12e40SEdward Tomasz Napierala 381f1f12e40SEdward Tomasz Napierala icl_conn_close(is->is_conn); 382f1f12e40SEdward Tomasz Napierala 383f1f12e40SEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 384f1f12e40SEdward Tomasz Napierala 385f1f12e40SEdward Tomasz Napierala is->is_connected = false; 386f1f12e40SEdward Tomasz Napierala is->is_reconnecting = false; 387f1f12e40SEdward Tomasz Napierala is->is_login_phase = false; 388f1f12e40SEdward Tomasz Napierala 389f1f12e40SEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 390f1f12e40SEdward Tomasz Napierala if (is->is_login_pdu != NULL) { 391f1f12e40SEdward Tomasz Napierala icl_pdu_free(is->is_login_pdu); 392f1f12e40SEdward Tomasz Napierala is->is_login_pdu = NULL; 393f1f12e40SEdward Tomasz Napierala } 394f1f12e40SEdward Tomasz Napierala cv_signal(&is->is_login_cv); 395f1f12e40SEdward Tomasz Napierala #endif 396f1f12e40SEdward Tomasz Napierala 397f1f12e40SEdward Tomasz Napierala if (fail_on_disconnection) { 398f1f12e40SEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "connection failed, destroying devices"); 399f1f12e40SEdward Tomasz Napierala iscsi_session_cleanup(is, true); 400f1f12e40SEdward Tomasz Napierala } else { 401f1f12e40SEdward Tomasz Napierala iscsi_session_cleanup(is, false); 402f1f12e40SEdward Tomasz Napierala } 403009ea47eSEdward Tomasz Napierala 404009ea47eSEdward Tomasz Napierala KASSERT(TAILQ_EMPTY(&is->is_outstanding), 405009ea47eSEdward Tomasz Napierala ("destroying session with active tasks")); 40616c158a5SEdward Tomasz Napierala KASSERT(STAILQ_EMPTY(&is->is_postponed), 407009ea47eSEdward Tomasz Napierala ("destroying session with postponed PDUs")); 408009ea47eSEdward Tomasz Napierala 409009ea47eSEdward Tomasz Napierala /* 410009ea47eSEdward Tomasz Napierala * Request immediate reconnection from iscsid(8). 411009ea47eSEdward Tomasz Napierala */ 412009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "waking up iscsid(8)"); 413009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = true; 414009ea47eSEdward Tomasz Napierala strlcpy(is->is_reason, "Waiting for iscsid(8)", sizeof(is->is_reason)); 415009ea47eSEdward Tomasz Napierala is->is_timeout = 0; 416009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 417009ea47eSEdward Tomasz Napierala cv_signal(&is->is_softc->sc_cv); 418009ea47eSEdward Tomasz Napierala } 419009ea47eSEdward Tomasz Napierala 420009ea47eSEdward Tomasz Napierala static void 421009ea47eSEdward Tomasz Napierala iscsi_maintenance_thread_terminate(struct iscsi_session *is) 422009ea47eSEdward Tomasz Napierala { 423009ea47eSEdward Tomasz Napierala struct iscsi_softc *sc; 424009ea47eSEdward Tomasz Napierala 425009ea47eSEdward Tomasz Napierala sc = is->is_softc; 426009ea47eSEdward Tomasz Napierala sx_xlock(&sc->sc_lock); 427009ea47eSEdward Tomasz Napierala 428009ea47eSEdward Tomasz Napierala icl_conn_close(is->is_conn); 429674074daSEdward Tomasz Napierala callout_drain(&is->is_callout); 430009ea47eSEdward Tomasz Napierala 431009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 432009ea47eSEdward Tomasz Napierala 433009ea47eSEdward Tomasz Napierala KASSERT(is->is_terminating, ("is_terminating == false")); 434009ea47eSEdward Tomasz Napierala 435009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 436009ea47eSEdward Tomasz Napierala if (is->is_login_pdu != NULL) { 437009ea47eSEdward Tomasz Napierala icl_pdu_free(is->is_login_pdu); 438009ea47eSEdward Tomasz Napierala is->is_login_pdu = NULL; 439009ea47eSEdward Tomasz Napierala } 440009ea47eSEdward Tomasz Napierala cv_signal(&is->is_login_cv); 441009ea47eSEdward Tomasz Napierala #endif 442009ea47eSEdward Tomasz Napierala 443f1f12e40SEdward Tomasz Napierala iscsi_session_cleanup(is, true); 444009ea47eSEdward Tomasz Napierala 445009ea47eSEdward Tomasz Napierala KASSERT(TAILQ_EMPTY(&is->is_outstanding), 446009ea47eSEdward Tomasz Napierala ("destroying session with active tasks")); 44716c158a5SEdward Tomasz Napierala KASSERT(STAILQ_EMPTY(&is->is_postponed), 448009ea47eSEdward Tomasz Napierala ("destroying session with postponed PDUs")); 449009ea47eSEdward Tomasz Napierala 450009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 451009ea47eSEdward Tomasz Napierala 452009ea47eSEdward Tomasz Napierala icl_conn_free(is->is_conn); 453009ea47eSEdward Tomasz Napierala mtx_destroy(&is->is_lock); 454009ea47eSEdward Tomasz Napierala cv_destroy(&is->is_maintenance_cv); 455009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 456009ea47eSEdward Tomasz Napierala cv_destroy(&is->is_login_cv); 457009ea47eSEdward Tomasz Napierala #endif 458481b36c6SSteven Hartland TAILQ_REMOVE(&sc->sc_sessions, is, is_next); 459481b36c6SSteven Hartland sx_xunlock(&sc->sc_lock); 460481b36c6SSteven Hartland 461009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "terminated"); 462009ea47eSEdward Tomasz Napierala free(is, M_ISCSI); 463009ea47eSEdward Tomasz Napierala 464009ea47eSEdward Tomasz Napierala /* 465009ea47eSEdward Tomasz Napierala * The iscsi_unload() routine might be waiting. 466009ea47eSEdward Tomasz Napierala */ 467009ea47eSEdward Tomasz Napierala cv_signal(&sc->sc_cv); 468009ea47eSEdward Tomasz Napierala } 469009ea47eSEdward Tomasz Napierala 470009ea47eSEdward Tomasz Napierala static void 471009ea47eSEdward Tomasz Napierala iscsi_maintenance_thread(void *arg) 472009ea47eSEdward Tomasz Napierala { 473009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 474009ea47eSEdward Tomasz Napierala 475009ea47eSEdward Tomasz Napierala is = arg; 476009ea47eSEdward Tomasz Napierala 477009ea47eSEdward Tomasz Napierala for (;;) { 478009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 479009ea47eSEdward Tomasz Napierala if (is->is_reconnecting == false && 480009ea47eSEdward Tomasz Napierala is->is_terminating == false && 48116c158a5SEdward Tomasz Napierala STAILQ_EMPTY(&is->is_postponed)) 482009ea47eSEdward Tomasz Napierala cv_wait(&is->is_maintenance_cv, &is->is_lock); 483009ea47eSEdward Tomasz Napierala 484481b36c6SSteven Hartland /* Terminate supersedes reconnect. */ 485009ea47eSEdward Tomasz Napierala if (is->is_terminating) { 486009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 487009ea47eSEdward Tomasz Napierala iscsi_maintenance_thread_terminate(is); 488009ea47eSEdward Tomasz Napierala kthread_exit(); 489009ea47eSEdward Tomasz Napierala return; 490009ea47eSEdward Tomasz Napierala } 491009ea47eSEdward Tomasz Napierala 492481b36c6SSteven Hartland if (is->is_reconnecting) { 493481b36c6SSteven Hartland ISCSI_SESSION_UNLOCK(is); 494481b36c6SSteven Hartland iscsi_maintenance_thread_reconnect(is); 495481b36c6SSteven Hartland continue; 496481b36c6SSteven Hartland } 497481b36c6SSteven Hartland 498009ea47eSEdward Tomasz Napierala iscsi_session_send_postponed(is); 499009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 500009ea47eSEdward Tomasz Napierala } 501009ea47eSEdward Tomasz Napierala } 502009ea47eSEdward Tomasz Napierala 503009ea47eSEdward Tomasz Napierala static void 504009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(struct iscsi_session *is) 505009ea47eSEdward Tomasz Napierala { 506009ea47eSEdward Tomasz Napierala 507009ea47eSEdward Tomasz Napierala /* 508009ea47eSEdward Tomasz Napierala * XXX: We can't use locking here, because 509009ea47eSEdward Tomasz Napierala * it's being called from various contexts. 510009ea47eSEdward Tomasz Napierala * Hope it doesn't break anything. 511009ea47eSEdward Tomasz Napierala */ 512009ea47eSEdward Tomasz Napierala if (is->is_reconnecting) 513009ea47eSEdward Tomasz Napierala return; 514009ea47eSEdward Tomasz Napierala 515009ea47eSEdward Tomasz Napierala is->is_reconnecting = true; 516009ea47eSEdward Tomasz Napierala cv_signal(&is->is_maintenance_cv); 517009ea47eSEdward Tomasz Napierala } 518009ea47eSEdward Tomasz Napierala 519009ea47eSEdward Tomasz Napierala static void 520009ea47eSEdward Tomasz Napierala iscsi_session_terminate(struct iscsi_session *is) 521009ea47eSEdward Tomasz Napierala { 522674074daSEdward Tomasz Napierala 523009ea47eSEdward Tomasz Napierala if (is->is_terminating) 524009ea47eSEdward Tomasz Napierala return; 525009ea47eSEdward Tomasz Napierala 526009ea47eSEdward Tomasz Napierala is->is_terminating = true; 527009ea47eSEdward Tomasz Napierala 528009ea47eSEdward Tomasz Napierala #if 0 529009ea47eSEdward Tomasz Napierala iscsi_session_logout(is); 530009ea47eSEdward Tomasz Napierala #endif 531009ea47eSEdward Tomasz Napierala cv_signal(&is->is_maintenance_cv); 532009ea47eSEdward Tomasz Napierala } 533009ea47eSEdward Tomasz Napierala 534009ea47eSEdward Tomasz Napierala static void 535009ea47eSEdward Tomasz Napierala iscsi_callout(void *context) 536009ea47eSEdward Tomasz Napierala { 537009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 538009ea47eSEdward Tomasz Napierala struct iscsi_bhs_nop_out *bhsno; 539009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 540009ea47eSEdward Tomasz Napierala bool reconnect_needed = false; 541009ea47eSEdward Tomasz Napierala 542009ea47eSEdward Tomasz Napierala is = context; 543009ea47eSEdward Tomasz Napierala 544674074daSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 545674074daSEdward Tomasz Napierala if (is->is_terminating) { 546674074daSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 547009ea47eSEdward Tomasz Napierala return; 548674074daSEdward Tomasz Napierala } 549009ea47eSEdward Tomasz Napierala 550009ea47eSEdward Tomasz Napierala callout_schedule(&is->is_callout, 1 * hz); 551009ea47eSEdward Tomasz Napierala 552009ea47eSEdward Tomasz Napierala is->is_timeout++; 553009ea47eSEdward Tomasz Napierala 554009ea47eSEdward Tomasz Napierala if (is->is_waiting_for_iscsid) { 5552c5b89e5SEdward Tomasz Napierala if (iscsid_timeout > 0 && is->is_timeout > iscsid_timeout) { 556009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "timed out waiting for iscsid(8) " 557009ea47eSEdward Tomasz Napierala "for %d seconds; reconnecting", 558009ea47eSEdward Tomasz Napierala is->is_timeout); 559009ea47eSEdward Tomasz Napierala reconnect_needed = true; 560009ea47eSEdward Tomasz Napierala } 561009ea47eSEdward Tomasz Napierala goto out; 562009ea47eSEdward Tomasz Napierala } 563009ea47eSEdward Tomasz Napierala 564009ea47eSEdward Tomasz Napierala if (is->is_login_phase) { 5652c5b89e5SEdward Tomasz Napierala if (login_timeout > 0 && is->is_timeout > login_timeout) { 566009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "login timed out after %d seconds; " 567009ea47eSEdward Tomasz Napierala "reconnecting", is->is_timeout); 568009ea47eSEdward Tomasz Napierala reconnect_needed = true; 569009ea47eSEdward Tomasz Napierala } 570009ea47eSEdward Tomasz Napierala goto out; 571009ea47eSEdward Tomasz Napierala } 572009ea47eSEdward Tomasz Napierala 5732c5b89e5SEdward Tomasz Napierala if (ping_timeout <= 0) { 5742c5b89e5SEdward Tomasz Napierala /* 5752c5b89e5SEdward Tomasz Napierala * Pings are disabled. Don't send NOP-Out in this case. 5762c5b89e5SEdward Tomasz Napierala * Reset the timeout, to avoid triggering reconnection, 5772c5b89e5SEdward Tomasz Napierala * should the user decide to reenable them. 5782c5b89e5SEdward Tomasz Napierala */ 5792c5b89e5SEdward Tomasz Napierala is->is_timeout = 0; 5802c5b89e5SEdward Tomasz Napierala goto out; 5812c5b89e5SEdward Tomasz Napierala } 5822c5b89e5SEdward Tomasz Napierala 583009ea47eSEdward Tomasz Napierala if (is->is_timeout >= ping_timeout) { 584009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "no ping reply (NOP-In) after %d seconds; " 585009ea47eSEdward Tomasz Napierala "reconnecting", ping_timeout); 586009ea47eSEdward Tomasz Napierala reconnect_needed = true; 587009ea47eSEdward Tomasz Napierala goto out; 588009ea47eSEdward Tomasz Napierala } 589009ea47eSEdward Tomasz Napierala 590009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 591009ea47eSEdward Tomasz Napierala 592009ea47eSEdward Tomasz Napierala /* 593009ea47eSEdward Tomasz Napierala * If the ping was reset less than one second ago - which means 594009ea47eSEdward Tomasz Napierala * that we've received some PDU during the last second - assume 595009ea47eSEdward Tomasz Napierala * the traffic flows correctly and don't bother sending a NOP-Out. 596009ea47eSEdward Tomasz Napierala * 597009ea47eSEdward Tomasz Napierala * (It's 2 - one for one second, and one for incrementing is_timeout 598009ea47eSEdward Tomasz Napierala * earlier in this routine.) 599009ea47eSEdward Tomasz Napierala */ 600009ea47eSEdward Tomasz Napierala if (is->is_timeout < 2) 601009ea47eSEdward Tomasz Napierala return; 602009ea47eSEdward Tomasz Napierala 603d2d52b00SEdward Tomasz Napierala request = icl_pdu_new(is->is_conn, M_NOWAIT); 60446aaea89SEdward Tomasz Napierala if (request == NULL) { 60546aaea89SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate PDU"); 60646aaea89SEdward Tomasz Napierala return; 60746aaea89SEdward Tomasz Napierala } 608009ea47eSEdward Tomasz Napierala bhsno = (struct iscsi_bhs_nop_out *)request->ip_bhs; 609009ea47eSEdward Tomasz Napierala bhsno->bhsno_opcode = ISCSI_BHS_OPCODE_NOP_OUT | 610009ea47eSEdward Tomasz Napierala ISCSI_BHS_OPCODE_IMMEDIATE; 611009ea47eSEdward Tomasz Napierala bhsno->bhsno_flags = 0x80; 612009ea47eSEdward Tomasz Napierala bhsno->bhsno_target_transfer_tag = 0xffffffff; 613009ea47eSEdward Tomasz Napierala iscsi_pdu_queue(request); 614009ea47eSEdward Tomasz Napierala return; 615009ea47eSEdward Tomasz Napierala 616009ea47eSEdward Tomasz Napierala out: 617481b36c6SSteven Hartland if (is->is_terminating) { 618481b36c6SSteven Hartland ISCSI_SESSION_UNLOCK(is); 619481b36c6SSteven Hartland return; 620481b36c6SSteven Hartland } 621481b36c6SSteven Hartland 622009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 623009ea47eSEdward Tomasz Napierala 624009ea47eSEdward Tomasz Napierala if (reconnect_needed) 625009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 626009ea47eSEdward Tomasz Napierala } 627009ea47eSEdward Tomasz Napierala 628009ea47eSEdward Tomasz Napierala static void 629009ea47eSEdward Tomasz Napierala iscsi_pdu_update_statsn(const struct icl_pdu *response) 630009ea47eSEdward Tomasz Napierala { 631009ea47eSEdward Tomasz Napierala const struct iscsi_bhs_data_in *bhsdi; 632009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 6332124e3b0SAlexander Motin uint32_t expcmdsn, maxcmdsn, statsn; 634009ea47eSEdward Tomasz Napierala 635009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 636009ea47eSEdward Tomasz Napierala 637009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 638009ea47eSEdward Tomasz Napierala 639009ea47eSEdward Tomasz Napierala /* 640009ea47eSEdward Tomasz Napierala * We're only using fields common for all the response 641009ea47eSEdward Tomasz Napierala * (target -> initiator) PDUs. 642009ea47eSEdward Tomasz Napierala */ 643009ea47eSEdward Tomasz Napierala bhsdi = (const struct iscsi_bhs_data_in *)response->ip_bhs; 644009ea47eSEdward Tomasz Napierala /* 645009ea47eSEdward Tomasz Napierala * Ok, I lied. In case of Data-In, "The fields StatSN, Status, 646009ea47eSEdward Tomasz Napierala * and Residual Count only have meaningful content if the S bit 647009ea47eSEdward Tomasz Napierala * is set to 1", so we also need to check the bit specific for 648009ea47eSEdward Tomasz Napierala * Data-In PDU. 649009ea47eSEdward Tomasz Napierala */ 650009ea47eSEdward Tomasz Napierala if (bhsdi->bhsdi_opcode != ISCSI_BHS_OPCODE_SCSI_DATA_IN || 651009ea47eSEdward Tomasz Napierala (bhsdi->bhsdi_flags & BHSDI_FLAGS_S) != 0) { 6522124e3b0SAlexander Motin statsn = ntohl(bhsdi->bhsdi_statsn); 6532124e3b0SAlexander Motin if (statsn != is->is_statsn && statsn != (is->is_statsn + 1)) { 6542124e3b0SAlexander Motin /* XXX: This is normal situation for MCS */ 6552124e3b0SAlexander Motin ISCSI_SESSION_WARN(is, "PDU 0x%x StatSN %u != " 6562124e3b0SAlexander Motin "session ExpStatSN %u (or + 1); reconnecting", 6572124e3b0SAlexander Motin bhsdi->bhsdi_opcode, statsn, is->is_statsn); 6582124e3b0SAlexander Motin iscsi_session_reconnect(is); 659009ea47eSEdward Tomasz Napierala } 6602124e3b0SAlexander Motin if (ISCSI_SNGT(statsn, is->is_statsn)) 6612124e3b0SAlexander Motin is->is_statsn = statsn; 662009ea47eSEdward Tomasz Napierala } 663009ea47eSEdward Tomasz Napierala 664009ea47eSEdward Tomasz Napierala expcmdsn = ntohl(bhsdi->bhsdi_expcmdsn); 665009ea47eSEdward Tomasz Napierala maxcmdsn = ntohl(bhsdi->bhsdi_maxcmdsn); 666009ea47eSEdward Tomasz Napierala 6672124e3b0SAlexander Motin if (ISCSI_SNLT(maxcmdsn + 1, expcmdsn)) { 6682124e3b0SAlexander Motin ISCSI_SESSION_DEBUG(is, 6692124e3b0SAlexander Motin "PDU MaxCmdSN %u + 1 < PDU ExpCmdSN %u; ignoring", 670009ea47eSEdward Tomasz Napierala maxcmdsn, expcmdsn); 671009ea47eSEdward Tomasz Napierala } else { 6722124e3b0SAlexander Motin if (ISCSI_SNGT(maxcmdsn, is->is_maxcmdsn)) { 673009ea47eSEdward Tomasz Napierala is->is_maxcmdsn = maxcmdsn; 674009ea47eSEdward Tomasz Napierala 675009ea47eSEdward Tomasz Napierala /* 676009ea47eSEdward Tomasz Napierala * Command window increased; kick the maintanance thread 677009ea47eSEdward Tomasz Napierala * to send out postponed commands. 678009ea47eSEdward Tomasz Napierala */ 67916c158a5SEdward Tomasz Napierala if (!STAILQ_EMPTY(&is->is_postponed)) 680009ea47eSEdward Tomasz Napierala cv_signal(&is->is_maintenance_cv); 6812124e3b0SAlexander Motin } else if (ISCSI_SNLT(maxcmdsn, is->is_maxcmdsn)) { 6822124e3b0SAlexander Motin /* XXX: This is normal situation for MCS */ 6832124e3b0SAlexander Motin ISCSI_SESSION_DEBUG(is, 6842124e3b0SAlexander Motin "PDU MaxCmdSN %u < session MaxCmdSN %u; ignoring", 685009ea47eSEdward Tomasz Napierala maxcmdsn, is->is_maxcmdsn); 686009ea47eSEdward Tomasz Napierala } 687009ea47eSEdward Tomasz Napierala 6882124e3b0SAlexander Motin if (ISCSI_SNGT(expcmdsn, is->is_expcmdsn)) { 689009ea47eSEdward Tomasz Napierala is->is_expcmdsn = expcmdsn; 6902124e3b0SAlexander Motin } else if (ISCSI_SNLT(expcmdsn, is->is_expcmdsn)) { 6912124e3b0SAlexander Motin /* XXX: This is normal situation for MCS */ 6922124e3b0SAlexander Motin ISCSI_SESSION_DEBUG(is, 6932124e3b0SAlexander Motin "PDU ExpCmdSN %u < session ExpCmdSN %u; ignoring", 694009ea47eSEdward Tomasz Napierala expcmdsn, is->is_expcmdsn); 695009ea47eSEdward Tomasz Napierala } 696009ea47eSEdward Tomasz Napierala } 697009ea47eSEdward Tomasz Napierala 698009ea47eSEdward Tomasz Napierala /* 699009ea47eSEdward Tomasz Napierala * Every incoming PDU - not just NOP-In - resets the ping timer. 700009ea47eSEdward Tomasz Napierala * The purpose of the timeout is to reset the connection when it stalls; 701009ea47eSEdward Tomasz Napierala * we don't want this to happen when NOP-In or NOP-Out ends up delayed 702009ea47eSEdward Tomasz Napierala * in some queue. 703009ea47eSEdward Tomasz Napierala */ 704009ea47eSEdward Tomasz Napierala is->is_timeout = 0; 705009ea47eSEdward Tomasz Napierala } 706009ea47eSEdward Tomasz Napierala 707009ea47eSEdward Tomasz Napierala static void 708009ea47eSEdward Tomasz Napierala iscsi_receive_callback(struct icl_pdu *response) 709009ea47eSEdward Tomasz Napierala { 710009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 711009ea47eSEdward Tomasz Napierala 712009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 713009ea47eSEdward Tomasz Napierala 714009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 715009ea47eSEdward Tomasz Napierala 716d66a906bSEdward Tomasz Napierala iscsi_pdu_update_statsn(response); 717d66a906bSEdward Tomasz Napierala 718009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 719009ea47eSEdward Tomasz Napierala if (is->is_login_phase) { 720009ea47eSEdward Tomasz Napierala if (is->is_login_pdu == NULL) 721009ea47eSEdward Tomasz Napierala is->is_login_pdu = response; 722009ea47eSEdward Tomasz Napierala else 723009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 724009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 725009ea47eSEdward Tomasz Napierala cv_signal(&is->is_login_cv); 726009ea47eSEdward Tomasz Napierala return; 727009ea47eSEdward Tomasz Napierala } 728009ea47eSEdward Tomasz Napierala #endif 729009ea47eSEdward Tomasz Napierala 730009ea47eSEdward Tomasz Napierala /* 731009ea47eSEdward Tomasz Napierala * The handling routine is responsible for freeing the PDU 732009ea47eSEdward Tomasz Napierala * when it's no longer needed. 733009ea47eSEdward Tomasz Napierala */ 734009ea47eSEdward Tomasz Napierala switch (response->ip_bhs->bhs_opcode) { 735009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_NOP_IN: 736009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_nop_in(response); 737c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 738009ea47eSEdward Tomasz Napierala break; 739009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_SCSI_RESPONSE: 740009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_scsi_response(response); 741c215ad3aSAlexander Motin /* Session lock dropped inside. */ 742c215ad3aSAlexander Motin ISCSI_SESSION_LOCK_ASSERT_NOT(is); 743009ea47eSEdward Tomasz Napierala break; 744aa75114cSAlexander Motin case ISCSI_BHS_OPCODE_TASK_RESPONSE: 745aa75114cSAlexander Motin iscsi_pdu_handle_task_response(response); 746c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 747aa75114cSAlexander Motin break; 748009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_SCSI_DATA_IN: 749009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_data_in(response); 750c215ad3aSAlexander Motin /* Session lock dropped inside. */ 751c215ad3aSAlexander Motin ISCSI_SESSION_LOCK_ASSERT_NOT(is); 752009ea47eSEdward Tomasz Napierala break; 753009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_LOGOUT_RESPONSE: 754009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_logout_response(response); 755c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 756009ea47eSEdward Tomasz Napierala break; 757009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_R2T: 758009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_r2t(response); 759c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 760009ea47eSEdward Tomasz Napierala break; 761009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_ASYNC_MESSAGE: 762009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_async_message(response); 763c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 764009ea47eSEdward Tomasz Napierala break; 765009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_REJECT: 766009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_reject(response); 767c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 768009ea47eSEdward Tomasz Napierala break; 769009ea47eSEdward Tomasz Napierala default: 770009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "received PDU with unsupported " 771009ea47eSEdward Tomasz Napierala "opcode 0x%x; reconnecting", 772009ea47eSEdward Tomasz Napierala response->ip_bhs->bhs_opcode); 773009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 774c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 775009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 776009ea47eSEdward Tomasz Napierala } 777009ea47eSEdward Tomasz Napierala } 778009ea47eSEdward Tomasz Napierala 779009ea47eSEdward Tomasz Napierala static void 780009ea47eSEdward Tomasz Napierala iscsi_error_callback(struct icl_conn *ic) 781009ea47eSEdward Tomasz Napierala { 782009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 783009ea47eSEdward Tomasz Napierala 784009ea47eSEdward Tomasz Napierala is = CONN_SESSION(ic); 785009ea47eSEdward Tomasz Napierala 786009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "connection error; reconnecting"); 787009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 788009ea47eSEdward Tomasz Napierala } 789009ea47eSEdward Tomasz Napierala 790009ea47eSEdward Tomasz Napierala static void 791009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_nop_in(struct icl_pdu *response) 792009ea47eSEdward Tomasz Napierala { 7931008ac5eSEdward Tomasz Napierala struct iscsi_session *is; 794009ea47eSEdward Tomasz Napierala struct iscsi_bhs_nop_out *bhsno; 795009ea47eSEdward Tomasz Napierala struct iscsi_bhs_nop_in *bhsni; 796009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 7971008ac5eSEdward Tomasz Napierala void *data = NULL; 7981008ac5eSEdward Tomasz Napierala size_t datasize; 7991008ac5eSEdward Tomasz Napierala int error; 800009ea47eSEdward Tomasz Napierala 8011008ac5eSEdward Tomasz Napierala is = PDU_SESSION(response); 802009ea47eSEdward Tomasz Napierala bhsni = (struct iscsi_bhs_nop_in *)response->ip_bhs; 803009ea47eSEdward Tomasz Napierala 804009ea47eSEdward Tomasz Napierala if (bhsni->bhsni_target_transfer_tag == 0xffffffff) { 805009ea47eSEdward Tomasz Napierala /* 806009ea47eSEdward Tomasz Napierala * Nothing to do; iscsi_pdu_update_statsn() already 807009ea47eSEdward Tomasz Napierala * zeroed the timeout. 808009ea47eSEdward Tomasz Napierala */ 809009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 810009ea47eSEdward Tomasz Napierala return; 811009ea47eSEdward Tomasz Napierala } 812009ea47eSEdward Tomasz Napierala 8131008ac5eSEdward Tomasz Napierala datasize = icl_pdu_data_segment_length(response); 8141008ac5eSEdward Tomasz Napierala if (datasize > 0) { 8151008ac5eSEdward Tomasz Napierala data = malloc(datasize, M_ISCSI, M_NOWAIT | M_ZERO); 8161008ac5eSEdward Tomasz Napierala if (data == NULL) { 8171008ac5eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate memory; " 8181008ac5eSEdward Tomasz Napierala "reconnecting"); 8191008ac5eSEdward Tomasz Napierala icl_pdu_free(response); 8201008ac5eSEdward Tomasz Napierala iscsi_session_reconnect(is); 8211008ac5eSEdward Tomasz Napierala return; 8221008ac5eSEdward Tomasz Napierala } 8231008ac5eSEdward Tomasz Napierala icl_pdu_get_data(response, 0, data, datasize); 8241008ac5eSEdward Tomasz Napierala } 8251008ac5eSEdward Tomasz Napierala 826d2d52b00SEdward Tomasz Napierala request = icl_pdu_new(response->ip_conn, M_NOWAIT); 827009ea47eSEdward Tomasz Napierala if (request == NULL) { 8281008ac5eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate memory; " 8291008ac5eSEdward Tomasz Napierala "reconnecting"); 8301008ac5eSEdward Tomasz Napierala free(data, M_ISCSI); 831009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 8321008ac5eSEdward Tomasz Napierala iscsi_session_reconnect(is); 833009ea47eSEdward Tomasz Napierala return; 834009ea47eSEdward Tomasz Napierala } 835009ea47eSEdward Tomasz Napierala bhsno = (struct iscsi_bhs_nop_out *)request->ip_bhs; 836009ea47eSEdward Tomasz Napierala bhsno->bhsno_opcode = ISCSI_BHS_OPCODE_NOP_OUT | 837009ea47eSEdward Tomasz Napierala ISCSI_BHS_OPCODE_IMMEDIATE; 838009ea47eSEdward Tomasz Napierala bhsno->bhsno_flags = 0x80; 8391008ac5eSEdward Tomasz Napierala bhsno->bhsno_initiator_task_tag = 0xffffffff; 840009ea47eSEdward Tomasz Napierala bhsno->bhsno_target_transfer_tag = bhsni->bhsni_target_transfer_tag; 8411008ac5eSEdward Tomasz Napierala if (datasize > 0) { 8421008ac5eSEdward Tomasz Napierala error = icl_pdu_append_data(request, data, datasize, M_NOWAIT); 8431008ac5eSEdward Tomasz Napierala if (error != 0) { 8441008ac5eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate memory; " 8451008ac5eSEdward Tomasz Napierala "reconnecting"); 8461008ac5eSEdward Tomasz Napierala free(data, M_ISCSI); 8471008ac5eSEdward Tomasz Napierala icl_pdu_free(request); 8481008ac5eSEdward Tomasz Napierala icl_pdu_free(response); 8491008ac5eSEdward Tomasz Napierala iscsi_session_reconnect(is); 8501008ac5eSEdward Tomasz Napierala return; 8511008ac5eSEdward Tomasz Napierala } 8521008ac5eSEdward Tomasz Napierala free(data, M_ISCSI); 8531008ac5eSEdward Tomasz Napierala } 854009ea47eSEdward Tomasz Napierala 855009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 856009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(request); 857009ea47eSEdward Tomasz Napierala } 858009ea47eSEdward Tomasz Napierala 859009ea47eSEdward Tomasz Napierala static void 860009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_scsi_response(struct icl_pdu *response) 861009ea47eSEdward Tomasz Napierala { 862009ea47eSEdward Tomasz Napierala struct iscsi_bhs_scsi_response *bhssr; 863009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io; 864009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 86573e2e95dSAlexander Motin union ccb *ccb; 866009ea47eSEdward Tomasz Napierala struct ccb_scsiio *csio; 86773e2e95dSAlexander Motin size_t data_segment_len, received; 868009ea47eSEdward Tomasz Napierala uint16_t sense_len; 869009ea47eSEdward Tomasz Napierala 870009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 871009ea47eSEdward Tomasz Napierala 872009ea47eSEdward Tomasz Napierala bhssr = (struct iscsi_bhs_scsi_response *)response->ip_bhs; 873009ea47eSEdward Tomasz Napierala io = iscsi_outstanding_find(is, bhssr->bhssr_initiator_task_tag); 874aa75114cSAlexander Motin if (io == NULL || io->io_ccb == NULL) { 875009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "bad itt 0x%x", bhssr->bhssr_initiator_task_tag); 876009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 877009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 878c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 879009ea47eSEdward Tomasz Napierala return; 880009ea47eSEdward Tomasz Napierala } 881009ea47eSEdward Tomasz Napierala 88273e2e95dSAlexander Motin ccb = io->io_ccb; 88373e2e95dSAlexander Motin received = io->io_received; 884c215ad3aSAlexander Motin iscsi_outstanding_remove(is, io); 885c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 886c215ad3aSAlexander Motin 887009ea47eSEdward Tomasz Napierala if (bhssr->bhssr_response != BHSSR_RESPONSE_COMMAND_COMPLETED) { 888009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "service response 0x%x", bhssr->bhssr_response); 88973e2e95dSAlexander Motin if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 89073e2e95dSAlexander Motin xpt_freeze_devq(ccb->ccb_h.path, 1); 891009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 892009ea47eSEdward Tomasz Napierala } 89373e2e95dSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP_ERR | CAM_DEV_QFRZN; 894009ea47eSEdward Tomasz Napierala } else if (bhssr->bhssr_status == 0) { 89573e2e95dSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP; 896009ea47eSEdward Tomasz Napierala } else { 89773e2e95dSAlexander Motin if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 89873e2e95dSAlexander Motin xpt_freeze_devq(ccb->ccb_h.path, 1); 899009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 900009ea47eSEdward Tomasz Napierala } 90173e2e95dSAlexander Motin ccb->ccb_h.status = CAM_SCSI_STATUS_ERROR | CAM_DEV_QFRZN; 90273e2e95dSAlexander Motin ccb->csio.scsi_status = bhssr->bhssr_status; 903009ea47eSEdward Tomasz Napierala } 904009ea47eSEdward Tomasz Napierala 90573e2e95dSAlexander Motin csio = &ccb->csio; 906009ea47eSEdward Tomasz Napierala data_segment_len = icl_pdu_data_segment_length(response); 907009ea47eSEdward Tomasz Napierala if (data_segment_len > 0) { 908009ea47eSEdward Tomasz Napierala if (data_segment_len < sizeof(sense_len)) { 909009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "truncated data segment (%zd bytes)", 910009ea47eSEdward Tomasz Napierala data_segment_len); 91173e2e95dSAlexander Motin if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 91273e2e95dSAlexander Motin xpt_freeze_devq(ccb->ccb_h.path, 1); 913009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 914009ea47eSEdward Tomasz Napierala } 91573e2e95dSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP_ERR | CAM_DEV_QFRZN; 916009ea47eSEdward Tomasz Napierala goto out; 917009ea47eSEdward Tomasz Napierala } 918009ea47eSEdward Tomasz Napierala icl_pdu_get_data(response, 0, &sense_len, sizeof(sense_len)); 919009ea47eSEdward Tomasz Napierala sense_len = ntohs(sense_len); 920009ea47eSEdward Tomasz Napierala #if 0 921009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "sense_len %d, data len %zd", 922009ea47eSEdward Tomasz Napierala sense_len, data_segment_len); 923009ea47eSEdward Tomasz Napierala #endif 924009ea47eSEdward Tomasz Napierala if (sizeof(sense_len) + sense_len > data_segment_len) { 925009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "truncated data segment " 926009ea47eSEdward Tomasz Napierala "(%zd bytes, should be %zd)", 927009ea47eSEdward Tomasz Napierala data_segment_len, sizeof(sense_len) + sense_len); 92873e2e95dSAlexander Motin if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 92973e2e95dSAlexander Motin xpt_freeze_devq(ccb->ccb_h.path, 1); 930009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 931009ea47eSEdward Tomasz Napierala } 93273e2e95dSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP_ERR | CAM_DEV_QFRZN; 933009ea47eSEdward Tomasz Napierala goto out; 934009ea47eSEdward Tomasz Napierala } else if (sizeof(sense_len) + sense_len < data_segment_len) 935009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "oversize data segment " 936009ea47eSEdward Tomasz Napierala "(%zd bytes, should be %zd)", 937009ea47eSEdward Tomasz Napierala data_segment_len, sizeof(sense_len) + sense_len); 938009ea47eSEdward Tomasz Napierala if (sense_len > csio->sense_len) { 939009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "truncating sense from %d to %d", 940009ea47eSEdward Tomasz Napierala sense_len, csio->sense_len); 941009ea47eSEdward Tomasz Napierala sense_len = csio->sense_len; 942009ea47eSEdward Tomasz Napierala } 943009ea47eSEdward Tomasz Napierala icl_pdu_get_data(response, sizeof(sense_len), &csio->sense_data, sense_len); 944009ea47eSEdward Tomasz Napierala csio->sense_resid = csio->sense_len - sense_len; 94573e2e95dSAlexander Motin ccb->ccb_h.status |= CAM_AUTOSNS_VALID; 946009ea47eSEdward Tomasz Napierala } 947009ea47eSEdward Tomasz Napierala 948009ea47eSEdward Tomasz Napierala out: 949009ea47eSEdward Tomasz Napierala if (bhssr->bhssr_flags & BHSSR_FLAGS_RESIDUAL_UNDERFLOW) 950009ea47eSEdward Tomasz Napierala csio->resid = ntohl(bhssr->bhssr_residual_count); 951009ea47eSEdward Tomasz Napierala 952009ea47eSEdward Tomasz Napierala if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) { 95373e2e95dSAlexander Motin KASSERT(received <= csio->dxfer_len, 95473e2e95dSAlexander Motin ("received > csio->dxfer_len")); 95573e2e95dSAlexander Motin if (received < csio->dxfer_len) { 95673e2e95dSAlexander Motin if (csio->resid != csio->dxfer_len - received) { 957009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "underflow mismatch: " 958009ea47eSEdward Tomasz Napierala "target indicates %d, we calculated %zd", 95973e2e95dSAlexander Motin csio->resid, csio->dxfer_len - received); 960009ea47eSEdward Tomasz Napierala } 96173e2e95dSAlexander Motin csio->resid = csio->dxfer_len - received; 962009ea47eSEdward Tomasz Napierala } 963009ea47eSEdward Tomasz Napierala } 964009ea47eSEdward Tomasz Napierala 96573e2e95dSAlexander Motin xpt_done(ccb); 966009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 967009ea47eSEdward Tomasz Napierala } 968009ea47eSEdward Tomasz Napierala 969009ea47eSEdward Tomasz Napierala static void 970aa75114cSAlexander Motin iscsi_pdu_handle_task_response(struct icl_pdu *response) 971aa75114cSAlexander Motin { 972aa75114cSAlexander Motin struct iscsi_bhs_task_management_response *bhstmr; 973aa75114cSAlexander Motin struct iscsi_outstanding *io, *aio; 974aa75114cSAlexander Motin struct iscsi_session *is; 975aa75114cSAlexander Motin 976aa75114cSAlexander Motin is = PDU_SESSION(response); 977aa75114cSAlexander Motin 978aa75114cSAlexander Motin bhstmr = (struct iscsi_bhs_task_management_response *)response->ip_bhs; 979aa75114cSAlexander Motin io = iscsi_outstanding_find(is, bhstmr->bhstmr_initiator_task_tag); 980aa75114cSAlexander Motin if (io == NULL || io->io_ccb != NULL) { 981aa75114cSAlexander Motin ISCSI_SESSION_WARN(is, "bad itt 0x%x", 982aa75114cSAlexander Motin bhstmr->bhstmr_initiator_task_tag); 983aa75114cSAlexander Motin icl_pdu_free(response); 984aa75114cSAlexander Motin iscsi_session_reconnect(is); 985aa75114cSAlexander Motin return; 986aa75114cSAlexander Motin } 987aa75114cSAlexander Motin 988aa75114cSAlexander Motin if (bhstmr->bhstmr_response != BHSTMR_RESPONSE_FUNCTION_COMPLETE) { 989aa75114cSAlexander Motin ISCSI_SESSION_WARN(is, "task response 0x%x", 990aa75114cSAlexander Motin bhstmr->bhstmr_response); 991aa75114cSAlexander Motin } else { 992aa75114cSAlexander Motin aio = iscsi_outstanding_find(is, io->io_datasn); 993aa75114cSAlexander Motin if (aio != NULL && aio->io_ccb != NULL) 994aa75114cSAlexander Motin iscsi_session_terminate_task(is, aio, false); 995aa75114cSAlexander Motin } 996aa75114cSAlexander Motin 997aa75114cSAlexander Motin iscsi_outstanding_remove(is, io); 998aa75114cSAlexander Motin icl_pdu_free(response); 999aa75114cSAlexander Motin } 1000aa75114cSAlexander Motin 1001aa75114cSAlexander Motin static void 1002009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_data_in(struct icl_pdu *response) 1003009ea47eSEdward Tomasz Napierala { 1004009ea47eSEdward Tomasz Napierala struct iscsi_bhs_data_in *bhsdi; 1005009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io; 1006009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 100773e2e95dSAlexander Motin union ccb *ccb; 1008009ea47eSEdward Tomasz Napierala struct ccb_scsiio *csio; 100973e2e95dSAlexander Motin size_t data_segment_len, received, oreceived; 1010009ea47eSEdward Tomasz Napierala 1011009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 1012009ea47eSEdward Tomasz Napierala bhsdi = (struct iscsi_bhs_data_in *)response->ip_bhs; 1013009ea47eSEdward Tomasz Napierala io = iscsi_outstanding_find(is, bhsdi->bhsdi_initiator_task_tag); 1014aa75114cSAlexander Motin if (io == NULL || io->io_ccb == NULL) { 1015009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "bad itt 0x%x", bhsdi->bhsdi_initiator_task_tag); 1016009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1017009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1018c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 1019009ea47eSEdward Tomasz Napierala return; 1020009ea47eSEdward Tomasz Napierala } 1021009ea47eSEdward Tomasz Napierala 1022009ea47eSEdward Tomasz Napierala data_segment_len = icl_pdu_data_segment_length(response); 1023009ea47eSEdward Tomasz Napierala if (data_segment_len == 0) { 1024009ea47eSEdward Tomasz Napierala /* 1025009ea47eSEdward Tomasz Napierala * "The sending of 0 length data segments should be avoided, 1026009ea47eSEdward Tomasz Napierala * but initiators and targets MUST be able to properly receive 1027009ea47eSEdward Tomasz Napierala * 0 length data segments." 1028009ea47eSEdward Tomasz Napierala */ 1029c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 1030009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1031009ea47eSEdward Tomasz Napierala return; 1032009ea47eSEdward Tomasz Napierala } 1033009ea47eSEdward Tomasz Napierala 1034009ea47eSEdward Tomasz Napierala /* 1035009ea47eSEdward Tomasz Napierala * We need to track this for security reasons - without it, malicious target 1036009ea47eSEdward Tomasz Napierala * could respond to SCSI READ without sending Data-In PDUs, which would result 1037009ea47eSEdward Tomasz Napierala * in read operation on the initiator side returning random kernel data. 1038009ea47eSEdward Tomasz Napierala */ 1039009ea47eSEdward Tomasz Napierala if (ntohl(bhsdi->bhsdi_buffer_offset) != io->io_received) { 1040009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "data out of order; expected offset %zd, got %zd", 1041009ea47eSEdward Tomasz Napierala io->io_received, (size_t)ntohl(bhsdi->bhsdi_buffer_offset)); 1042009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1043009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1044c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 1045009ea47eSEdward Tomasz Napierala return; 1046009ea47eSEdward Tomasz Napierala } 1047009ea47eSEdward Tomasz Napierala 104873e2e95dSAlexander Motin ccb = io->io_ccb; 104973e2e95dSAlexander Motin csio = &ccb->csio; 1050009ea47eSEdward Tomasz Napierala 1051d43c9ec1SEdward Tomasz Napierala if (io->io_received + data_segment_len > csio->dxfer_len) { 1052009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "oversize data segment (%zd bytes " 1053d43c9ec1SEdward Tomasz Napierala "at offset %zd, buffer is %d)", 1054d43c9ec1SEdward Tomasz Napierala data_segment_len, io->io_received, csio->dxfer_len); 1055009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1056009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1057c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 1058009ea47eSEdward Tomasz Napierala return; 1059009ea47eSEdward Tomasz Napierala } 1060009ea47eSEdward Tomasz Napierala 106173e2e95dSAlexander Motin oreceived = io->io_received; 1062009ea47eSEdward Tomasz Napierala io->io_received += data_segment_len; 106373e2e95dSAlexander Motin received = io->io_received; 1064c215ad3aSAlexander Motin if ((bhsdi->bhsdi_flags & BHSDI_FLAGS_S) != 0) 1065c215ad3aSAlexander Motin iscsi_outstanding_remove(is, io); 1066c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 1067c215ad3aSAlexander Motin 106873e2e95dSAlexander Motin icl_pdu_get_data(response, 0, csio->data_ptr + oreceived, data_segment_len); 1069009ea47eSEdward Tomasz Napierala 1070009ea47eSEdward Tomasz Napierala /* 1071009ea47eSEdward Tomasz Napierala * XXX: Check DataSN. 1072009ea47eSEdward Tomasz Napierala * XXX: Check F. 1073009ea47eSEdward Tomasz Napierala */ 107469647b7bSEdward Tomasz Napierala if ((bhsdi->bhsdi_flags & BHSDI_FLAGS_S) == 0) { 107569647b7bSEdward Tomasz Napierala /* 107669647b7bSEdward Tomasz Napierala * Nothing more to do. 107769647b7bSEdward Tomasz Napierala */ 107869647b7bSEdward Tomasz Napierala icl_pdu_free(response); 107969647b7bSEdward Tomasz Napierala return; 108069647b7bSEdward Tomasz Napierala } 108169647b7bSEdward Tomasz Napierala 1082009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "got S flag; status 0x%x", bhsdi->bhsdi_status); 1083009ea47eSEdward Tomasz Napierala if (bhsdi->bhsdi_status == 0) { 108473e2e95dSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP; 1085009ea47eSEdward Tomasz Napierala } else { 108673e2e95dSAlexander Motin if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 108773e2e95dSAlexander Motin xpt_freeze_devq(ccb->ccb_h.path, 1); 1088009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 1089009ea47eSEdward Tomasz Napierala } 109073e2e95dSAlexander Motin ccb->ccb_h.status = CAM_SCSI_STATUS_ERROR | CAM_DEV_QFRZN; 1091009ea47eSEdward Tomasz Napierala csio->scsi_status = bhsdi->bhsdi_status; 1092009ea47eSEdward Tomasz Napierala } 109369647b7bSEdward Tomasz Napierala 109469647b7bSEdward Tomasz Napierala if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) { 109573e2e95dSAlexander Motin KASSERT(received <= csio->dxfer_len, 109673e2e95dSAlexander Motin ("received > csio->dxfer_len")); 109773e2e95dSAlexander Motin if (received < csio->dxfer_len) { 109869647b7bSEdward Tomasz Napierala csio->resid = ntohl(bhsdi->bhsdi_residual_count); 109973e2e95dSAlexander Motin if (csio->resid != csio->dxfer_len - received) { 110069647b7bSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "underflow mismatch: " 110169647b7bSEdward Tomasz Napierala "target indicates %d, we calculated %zd", 110273e2e95dSAlexander Motin csio->resid, csio->dxfer_len - received); 110369647b7bSEdward Tomasz Napierala } 110473e2e95dSAlexander Motin csio->resid = csio->dxfer_len - received; 110569647b7bSEdward Tomasz Napierala } 1106009ea47eSEdward Tomasz Napierala } 1107009ea47eSEdward Tomasz Napierala 110873e2e95dSAlexander Motin xpt_done(ccb); 1109009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1110009ea47eSEdward Tomasz Napierala } 1111009ea47eSEdward Tomasz Napierala 1112009ea47eSEdward Tomasz Napierala static void 1113009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_logout_response(struct icl_pdu *response) 1114009ea47eSEdward Tomasz Napierala { 1115009ea47eSEdward Tomasz Napierala 1116009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(PDU_SESSION(response), "logout response"); 1117009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1118009ea47eSEdward Tomasz Napierala } 1119009ea47eSEdward Tomasz Napierala 1120009ea47eSEdward Tomasz Napierala static void 1121009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_r2t(struct icl_pdu *response) 1122009ea47eSEdward Tomasz Napierala { 1123009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 1124009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1125009ea47eSEdward Tomasz Napierala struct iscsi_bhs_r2t *bhsr2t; 1126009ea47eSEdward Tomasz Napierala struct iscsi_bhs_data_out *bhsdo; 1127009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io; 1128009ea47eSEdward Tomasz Napierala struct ccb_scsiio *csio; 1129009ea47eSEdward Tomasz Napierala size_t off, len, total_len; 1130009ea47eSEdward Tomasz Napierala int error; 1131009ea47eSEdward Tomasz Napierala 1132009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 1133009ea47eSEdward Tomasz Napierala 1134009ea47eSEdward Tomasz Napierala bhsr2t = (struct iscsi_bhs_r2t *)response->ip_bhs; 1135009ea47eSEdward Tomasz Napierala io = iscsi_outstanding_find(is, bhsr2t->bhsr2t_initiator_task_tag); 1136aa75114cSAlexander Motin if (io == NULL || io->io_ccb == NULL) { 1137009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "bad itt 0x%x; reconnecting", 1138009ea47eSEdward Tomasz Napierala bhsr2t->bhsr2t_initiator_task_tag); 1139009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1140009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1141009ea47eSEdward Tomasz Napierala return; 1142009ea47eSEdward Tomasz Napierala } 1143009ea47eSEdward Tomasz Napierala 1144009ea47eSEdward Tomasz Napierala csio = &io->io_ccb->csio; 1145009ea47eSEdward Tomasz Napierala 1146009ea47eSEdward Tomasz Napierala if ((csio->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_OUT) { 1147009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "received R2T for read command; reconnecting"); 1148009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1149009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1150009ea47eSEdward Tomasz Napierala return; 1151009ea47eSEdward Tomasz Napierala } 1152009ea47eSEdward Tomasz Napierala 1153009ea47eSEdward Tomasz Napierala /* 1154009ea47eSEdward Tomasz Napierala * XXX: Verify R2TSN. 1155009ea47eSEdward Tomasz Napierala */ 1156009ea47eSEdward Tomasz Napierala 1157009ea47eSEdward Tomasz Napierala io->io_datasn = 0; 1158d43c9ec1SEdward Tomasz Napierala 1159009ea47eSEdward Tomasz Napierala off = ntohl(bhsr2t->bhsr2t_buffer_offset); 1160d43c9ec1SEdward Tomasz Napierala if (off > csio->dxfer_len) { 1161d43c9ec1SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target requested invalid offset " 1162d43c9ec1SEdward Tomasz Napierala "%zd, buffer is is %d; reconnecting", off, csio->dxfer_len); 1163d43c9ec1SEdward Tomasz Napierala icl_pdu_free(response); 1164d43c9ec1SEdward Tomasz Napierala iscsi_session_reconnect(is); 1165d43c9ec1SEdward Tomasz Napierala return; 1166d43c9ec1SEdward Tomasz Napierala } 1167d43c9ec1SEdward Tomasz Napierala 1168009ea47eSEdward Tomasz Napierala total_len = ntohl(bhsr2t->bhsr2t_desired_data_transfer_length); 1169d43c9ec1SEdward Tomasz Napierala if (total_len == 0 || total_len > csio->dxfer_len) { 1170d43c9ec1SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target requested invalid length " 1171d43c9ec1SEdward Tomasz Napierala "%zd, buffer is %d; reconnecting", total_len, csio->dxfer_len); 1172d43c9ec1SEdward Tomasz Napierala icl_pdu_free(response); 1173d43c9ec1SEdward Tomasz Napierala iscsi_session_reconnect(is); 1174d43c9ec1SEdward Tomasz Napierala return; 1175d43c9ec1SEdward Tomasz Napierala } 1176009ea47eSEdward Tomasz Napierala 1177009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "r2t; off %zd, len %zd", off, total_len); 1178009ea47eSEdward Tomasz Napierala 1179009ea47eSEdward Tomasz Napierala for (;;) { 1180009ea47eSEdward Tomasz Napierala len = total_len; 1181009ea47eSEdward Tomasz Napierala 1182009ea47eSEdward Tomasz Napierala if (len > is->is_max_data_segment_length) 1183009ea47eSEdward Tomasz Napierala len = is->is_max_data_segment_length; 1184009ea47eSEdward Tomasz Napierala 1185009ea47eSEdward Tomasz Napierala if (off + len > csio->dxfer_len) { 1186d43c9ec1SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target requested invalid " 1187d43c9ec1SEdward Tomasz Napierala "length/offset %zd, buffer is %d; reconnecting", 1188009ea47eSEdward Tomasz Napierala off + len, csio->dxfer_len); 1189009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1190009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1191009ea47eSEdward Tomasz Napierala return; 1192009ea47eSEdward Tomasz Napierala } 1193009ea47eSEdward Tomasz Napierala 1194d2d52b00SEdward Tomasz Napierala request = icl_pdu_new(response->ip_conn, M_NOWAIT); 1195009ea47eSEdward Tomasz Napierala if (request == NULL) { 1196009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1197009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1198009ea47eSEdward Tomasz Napierala return; 1199009ea47eSEdward Tomasz Napierala } 1200009ea47eSEdward Tomasz Napierala 1201009ea47eSEdward Tomasz Napierala bhsdo = (struct iscsi_bhs_data_out *)request->ip_bhs; 1202009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_opcode = ISCSI_BHS_OPCODE_SCSI_DATA_OUT; 1203009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_lun = bhsr2t->bhsr2t_lun; 1204009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_initiator_task_tag = 1205009ea47eSEdward Tomasz Napierala bhsr2t->bhsr2t_initiator_task_tag; 1206009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_target_transfer_tag = 1207009ea47eSEdward Tomasz Napierala bhsr2t->bhsr2t_target_transfer_tag; 1208009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_datasn = htonl(io->io_datasn++); 1209009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_buffer_offset = htonl(off); 1210d43c9ec1SEdward Tomasz Napierala error = icl_pdu_append_data(request, csio->data_ptr + off, len, 1211d43c9ec1SEdward Tomasz Napierala M_NOWAIT); 1212009ea47eSEdward Tomasz Napierala if (error != 0) { 1213d43c9ec1SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate memory; " 1214d43c9ec1SEdward Tomasz Napierala "reconnecting"); 1215009ea47eSEdward Tomasz Napierala icl_pdu_free(request); 1216009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1217009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1218009ea47eSEdward Tomasz Napierala return; 1219009ea47eSEdward Tomasz Napierala } 1220009ea47eSEdward Tomasz Napierala 1221009ea47eSEdward Tomasz Napierala off += len; 1222009ea47eSEdward Tomasz Napierala total_len -= len; 1223009ea47eSEdward Tomasz Napierala 1224009ea47eSEdward Tomasz Napierala if (total_len == 0) { 1225009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_flags |= BHSDO_FLAGS_F; 1226009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "setting F, off %zd", off); 1227009ea47eSEdward Tomasz Napierala } else { 1228009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "not finished, off %zd", off); 1229009ea47eSEdward Tomasz Napierala } 1230009ea47eSEdward Tomasz Napierala 1231009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(request); 1232009ea47eSEdward Tomasz Napierala 1233009ea47eSEdward Tomasz Napierala if (total_len == 0) 1234009ea47eSEdward Tomasz Napierala break; 1235009ea47eSEdward Tomasz Napierala } 1236009ea47eSEdward Tomasz Napierala 1237009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1238009ea47eSEdward Tomasz Napierala } 1239009ea47eSEdward Tomasz Napierala 1240009ea47eSEdward Tomasz Napierala static void 1241009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_async_message(struct icl_pdu *response) 1242009ea47eSEdward Tomasz Napierala { 1243009ea47eSEdward Tomasz Napierala struct iscsi_bhs_asynchronous_message *bhsam; 1244009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1245009ea47eSEdward Tomasz Napierala 1246009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 1247009ea47eSEdward Tomasz Napierala bhsam = (struct iscsi_bhs_asynchronous_message *)response->ip_bhs; 1248009ea47eSEdward Tomasz Napierala switch (bhsam->bhsam_async_event) { 1249009ea47eSEdward Tomasz Napierala case BHSAM_EVENT_TARGET_REQUESTS_LOGOUT: 1250009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target requests logout; removing session"); 1251009ea47eSEdward Tomasz Napierala iscsi_session_logout(is); 1252009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1253009ea47eSEdward Tomasz Napierala break; 1254009ea47eSEdward Tomasz Napierala case BHSAM_EVENT_TARGET_TERMINATES_CONNECTION: 1255009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target indicates it will drop drop the connection"); 1256009ea47eSEdward Tomasz Napierala break; 1257009ea47eSEdward Tomasz Napierala case BHSAM_EVENT_TARGET_TERMINATES_SESSION: 1258009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target indicates it will drop drop the session"); 1259009ea47eSEdward Tomasz Napierala break; 1260009ea47eSEdward Tomasz Napierala default: 1261009ea47eSEdward Tomasz Napierala /* 1262009ea47eSEdward Tomasz Napierala * XXX: Technically, we're obligated to also handle 1263009ea47eSEdward Tomasz Napierala * parameter renegotiation. 1264009ea47eSEdward Tomasz Napierala */ 1265009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "ignoring AsyncEvent %d", bhsam->bhsam_async_event); 1266009ea47eSEdward Tomasz Napierala break; 1267009ea47eSEdward Tomasz Napierala } 1268009ea47eSEdward Tomasz Napierala 1269009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1270009ea47eSEdward Tomasz Napierala } 1271009ea47eSEdward Tomasz Napierala 1272009ea47eSEdward Tomasz Napierala static void 1273009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_reject(struct icl_pdu *response) 1274009ea47eSEdward Tomasz Napierala { 1275009ea47eSEdward Tomasz Napierala struct iscsi_bhs_reject *bhsr; 1276009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1277009ea47eSEdward Tomasz Napierala 1278009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 1279009ea47eSEdward Tomasz Napierala bhsr = (struct iscsi_bhs_reject *)response->ip_bhs; 1280009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "received Reject PDU, reason 0x%x; protocol error?", 1281009ea47eSEdward Tomasz Napierala bhsr->bhsr_reason); 1282009ea47eSEdward Tomasz Napierala 1283009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1284009ea47eSEdward Tomasz Napierala } 1285009ea47eSEdward Tomasz Napierala 1286009ea47eSEdward Tomasz Napierala static int 1287009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_wait(struct iscsi_softc *sc, 1288009ea47eSEdward Tomasz Napierala struct iscsi_daemon_request *request) 1289009ea47eSEdward Tomasz Napierala { 1290009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1291009ea47eSEdward Tomasz Napierala int error; 1292009ea47eSEdward Tomasz Napierala 1293009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1294009ea47eSEdward Tomasz Napierala for (;;) { 1295009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 12962be596adSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1297009ea47eSEdward Tomasz Napierala if (is->is_waiting_for_iscsid) 1298009ea47eSEdward Tomasz Napierala break; 12992be596adSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1300009ea47eSEdward Tomasz Napierala } 1301009ea47eSEdward Tomasz Napierala 1302009ea47eSEdward Tomasz Napierala if (is == NULL) { 1303009ea47eSEdward Tomasz Napierala /* 1304009ea47eSEdward Tomasz Napierala * No session requires attention from iscsid(8); wait. 1305009ea47eSEdward Tomasz Napierala */ 1306009ea47eSEdward Tomasz Napierala error = cv_wait_sig(&sc->sc_cv, &sc->sc_lock); 1307009ea47eSEdward Tomasz Napierala if (error != 0) { 1308009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1309009ea47eSEdward Tomasz Napierala return (error); 1310009ea47eSEdward Tomasz Napierala } 1311009ea47eSEdward Tomasz Napierala continue; 1312009ea47eSEdward Tomasz Napierala } 1313009ea47eSEdward Tomasz Napierala 1314009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = false; 1315009ea47eSEdward Tomasz Napierala is->is_login_phase = true; 1316009ea47eSEdward Tomasz Napierala is->is_reason[0] = '\0'; 1317009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1318009ea47eSEdward Tomasz Napierala 1319009ea47eSEdward Tomasz Napierala request->idr_session_id = is->is_id; 1320ffe82e05SAlexander Motin memcpy(&request->idr_isid, &is->is_isid, 1321ffe82e05SAlexander Motin sizeof(request->idr_isid)); 1322ffe82e05SAlexander Motin request->idr_tsih = 0; /* New or reinstated session. */ 1323009ea47eSEdward Tomasz Napierala memcpy(&request->idr_conf, &is->is_conf, 1324009ea47eSEdward Tomasz Napierala sizeof(request->idr_conf)); 1325009ea47eSEdward Tomasz Napierala 132682babffbSEdward Tomasz Napierala error = icl_limits(is->is_conf.isc_offload, 132782babffbSEdward Tomasz Napierala &request->idr_limits.isl_max_data_segment_length); 132882babffbSEdward Tomasz Napierala if (error != 0) { 132982babffbSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "icl_limits for offload \"%s\" " 133082babffbSEdward Tomasz Napierala "failed with error %d", is->is_conf.isc_offload, 133182babffbSEdward Tomasz Napierala error); 133282babffbSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 133382babffbSEdward Tomasz Napierala return (error); 133482babffbSEdward Tomasz Napierala } 133582babffbSEdward Tomasz Napierala 1336009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1337009ea47eSEdward Tomasz Napierala return (0); 1338009ea47eSEdward Tomasz Napierala } 1339009ea47eSEdward Tomasz Napierala } 1340009ea47eSEdward Tomasz Napierala 1341009ea47eSEdward Tomasz Napierala static int 1342009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_handoff(struct iscsi_softc *sc, 1343009ea47eSEdward Tomasz Napierala struct iscsi_daemon_handoff *handoff) 1344009ea47eSEdward Tomasz Napierala { 1345009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1346f5cadbc4SNavdeep Parhar struct icl_conn *ic; 1347009ea47eSEdward Tomasz Napierala int error; 1348009ea47eSEdward Tomasz Napierala 1349009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1350009ea47eSEdward Tomasz Napierala 1351009ea47eSEdward Tomasz Napierala /* 1352009ea47eSEdward Tomasz Napierala * Find the session to hand off socket to. 1353009ea47eSEdward Tomasz Napierala */ 1354009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1355009ea47eSEdward Tomasz Napierala if (is->is_id == handoff->idh_session_id) 1356009ea47eSEdward Tomasz Napierala break; 1357009ea47eSEdward Tomasz Napierala } 1358009ea47eSEdward Tomasz Napierala if (is == NULL) { 1359009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1360009ea47eSEdward Tomasz Napierala return (ESRCH); 1361009ea47eSEdward Tomasz Napierala } 1362009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1363f5cadbc4SNavdeep Parhar ic = is->is_conn; 1364009ea47eSEdward Tomasz Napierala if (is->is_conf.isc_discovery || is->is_terminating) { 1365009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1366009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1367009ea47eSEdward Tomasz Napierala return (EINVAL); 1368009ea47eSEdward Tomasz Napierala } 13690260023fSEdward Tomasz Napierala if (is->is_connected) { 13700260023fSEdward Tomasz Napierala /* 13710260023fSEdward Tomasz Napierala * This might have happened because another iscsid(8) 13720260023fSEdward Tomasz Napierala * instance handed off the connection in the meantime. 13730260023fSEdward Tomasz Napierala * Just return. 13740260023fSEdward Tomasz Napierala */ 13750260023fSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "handoff on already connected " 13760260023fSEdward Tomasz Napierala "session"); 13770260023fSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 13780260023fSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 13790260023fSEdward Tomasz Napierala return (EBUSY); 13800260023fSEdward Tomasz Napierala } 1381009ea47eSEdward Tomasz Napierala 1382009ea47eSEdward Tomasz Napierala strlcpy(is->is_target_alias, handoff->idh_target_alias, 1383009ea47eSEdward Tomasz Napierala sizeof(is->is_target_alias)); 1384ffe82e05SAlexander Motin is->is_tsih = handoff->idh_tsih; 1385009ea47eSEdward Tomasz Napierala is->is_statsn = handoff->idh_statsn; 1386009ea47eSEdward Tomasz Napierala is->is_initial_r2t = handoff->idh_initial_r2t; 1387009ea47eSEdward Tomasz Napierala is->is_immediate_data = handoff->idh_immediate_data; 1388c8b73c2cSNavdeep Parhar 1389c8b73c2cSNavdeep Parhar /* 1390c8b73c2cSNavdeep Parhar * Cap MaxRecvDataSegmentLength obtained from the target to the maximum 1391c8b73c2cSNavdeep Parhar * size supported by our ICL module. 1392c8b73c2cSNavdeep Parhar */ 13937ceec7e4SNavdeep Parhar is->is_max_data_segment_length = min(ic->ic_max_data_segment_length, 13947ceec7e4SNavdeep Parhar handoff->idh_max_data_segment_length); 1395009ea47eSEdward Tomasz Napierala is->is_max_burst_length = handoff->idh_max_burst_length; 1396009ea47eSEdward Tomasz Napierala is->is_first_burst_length = handoff->idh_first_burst_length; 1397009ea47eSEdward Tomasz Napierala 1398009ea47eSEdward Tomasz Napierala if (handoff->idh_header_digest == ISCSI_DIGEST_CRC32C) 1399f5cadbc4SNavdeep Parhar ic->ic_header_crc32c = true; 1400009ea47eSEdward Tomasz Napierala else 1401f5cadbc4SNavdeep Parhar ic->ic_header_crc32c = false; 1402009ea47eSEdward Tomasz Napierala if (handoff->idh_data_digest == ISCSI_DIGEST_CRC32C) 1403f5cadbc4SNavdeep Parhar ic->ic_data_crc32c = true; 1404009ea47eSEdward Tomasz Napierala else 1405f5cadbc4SNavdeep Parhar ic->ic_data_crc32c = false; 1406009ea47eSEdward Tomasz Napierala 1407009ea47eSEdward Tomasz Napierala is->is_cmdsn = 0; 1408cf23c509SEdward Tomasz Napierala is->is_expcmdsn = 0; 1409cf23c509SEdward Tomasz Napierala is->is_maxcmdsn = 0; 1410009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = false; 1411009ea47eSEdward Tomasz Napierala is->is_login_phase = false; 1412009ea47eSEdward Tomasz Napierala is->is_timeout = 0; 1413009ea47eSEdward Tomasz Napierala is->is_connected = true; 1414009ea47eSEdward Tomasz Napierala is->is_reason[0] = '\0'; 1415009ea47eSEdward Tomasz Napierala 1416009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1417009ea47eSEdward Tomasz Napierala 141857a4f20bSEdward Tomasz Napierala /* 1419*906a424bSEdward Tomasz Napierala * If we're going through the proxy, the idh_socket will be 0, 1420*906a424bSEdward Tomasz Napierala * and the ICL module can simply ignore this call. It can also 1421*906a424bSEdward Tomasz Napierala * use it to determine it's no longer in the Login phase. 142257a4f20bSEdward Tomasz Napierala */ 1423f5cadbc4SNavdeep Parhar error = icl_conn_handoff(ic, handoff->idh_socket); 1424009ea47eSEdward Tomasz Napierala if (error != 0) { 1425009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1426009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1427009ea47eSEdward Tomasz Napierala return (error); 1428009ea47eSEdward Tomasz Napierala } 1429009ea47eSEdward Tomasz Napierala 1430009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1431009ea47eSEdward Tomasz Napierala 1432009ea47eSEdward Tomasz Napierala if (is->is_sim != NULL) { 1433009ea47eSEdward Tomasz Napierala /* 1434009ea47eSEdward Tomasz Napierala * When reconnecting, there already is SIM allocated for the session. 1435009ea47eSEdward Tomasz Napierala */ 1436009ea47eSEdward Tomasz Napierala KASSERT(is->is_simq_frozen, ("reconnect without frozen simq")); 1437009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1438009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "releasing"); 1439009ea47eSEdward Tomasz Napierala xpt_release_simq(is->is_sim, 1); 1440009ea47eSEdward Tomasz Napierala is->is_simq_frozen = false; 1441009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1442009ea47eSEdward Tomasz Napierala 1443009ea47eSEdward Tomasz Napierala } else { 1444009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1445009ea47eSEdward Tomasz Napierala is->is_devq = cam_simq_alloc(maxtags); 1446009ea47eSEdward Tomasz Napierala if (is->is_devq == NULL) { 1447009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate simq"); 1448009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1449009ea47eSEdward Tomasz Napierala return (ENOMEM); 1450009ea47eSEdward Tomasz Napierala } 1451009ea47eSEdward Tomasz Napierala 1452009ea47eSEdward Tomasz Napierala is->is_sim = cam_sim_alloc(iscsi_action, iscsi_poll, "iscsi", 1453009ea47eSEdward Tomasz Napierala is, is->is_id /* unit */, &is->is_lock, 1454462cf3baSAlexander Motin 1, maxtags, is->is_devq); 1455009ea47eSEdward Tomasz Napierala if (is->is_sim == NULL) { 1456009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1457009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate SIM"); 1458009ea47eSEdward Tomasz Napierala cam_simq_free(is->is_devq); 1459009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1460009ea47eSEdward Tomasz Napierala return (ENOMEM); 1461009ea47eSEdward Tomasz Napierala } 1462009ea47eSEdward Tomasz Napierala 1463009ea47eSEdward Tomasz Napierala error = xpt_bus_register(is->is_sim, NULL, 0); 1464009ea47eSEdward Tomasz Napierala if (error != 0) { 1465009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1466009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to register bus"); 1467009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1468009ea47eSEdward Tomasz Napierala return (ENOMEM); 1469009ea47eSEdward Tomasz Napierala } 1470009ea47eSEdward Tomasz Napierala 1471009ea47eSEdward Tomasz Napierala error = xpt_create_path(&is->is_path, /*periph*/NULL, 1472009ea47eSEdward Tomasz Napierala cam_sim_path(is->is_sim), CAM_TARGET_WILDCARD, 1473009ea47eSEdward Tomasz Napierala CAM_LUN_WILDCARD); 1474009ea47eSEdward Tomasz Napierala if (error != CAM_REQ_CMP) { 1475009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1476009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to create path"); 1477009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1478009ea47eSEdward Tomasz Napierala return (ENOMEM); 1479009ea47eSEdward Tomasz Napierala } 1480009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1481009ea47eSEdward Tomasz Napierala } 1482009ea47eSEdward Tomasz Napierala 1483009ea47eSEdward Tomasz Napierala return (0); 1484009ea47eSEdward Tomasz Napierala } 1485009ea47eSEdward Tomasz Napierala 1486009ea47eSEdward Tomasz Napierala static int 1487009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_fail(struct iscsi_softc *sc, 1488009ea47eSEdward Tomasz Napierala struct iscsi_daemon_fail *fail) 1489009ea47eSEdward Tomasz Napierala { 1490009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1491009ea47eSEdward Tomasz Napierala 1492009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1493009ea47eSEdward Tomasz Napierala 1494009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1495009ea47eSEdward Tomasz Napierala if (is->is_id == fail->idf_session_id) 1496009ea47eSEdward Tomasz Napierala break; 1497009ea47eSEdward Tomasz Napierala } 1498009ea47eSEdward Tomasz Napierala if (is == NULL) { 1499009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1500009ea47eSEdward Tomasz Napierala return (ESRCH); 1501009ea47eSEdward Tomasz Napierala } 1502009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1503009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "iscsid(8) failed: %s", 1504009ea47eSEdward Tomasz Napierala fail->idf_reason); 1505009ea47eSEdward Tomasz Napierala strlcpy(is->is_reason, fail->idf_reason, sizeof(is->is_reason)); 1506009ea47eSEdward Tomasz Napierala //is->is_waiting_for_iscsid = false; 1507009ea47eSEdward Tomasz Napierala //is->is_login_phase = true; 1508009ea47eSEdward Tomasz Napierala //iscsi_session_reconnect(is); 1509009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1510009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1511009ea47eSEdward Tomasz Napierala 1512009ea47eSEdward Tomasz Napierala return (0); 1513009ea47eSEdward Tomasz Napierala } 1514009ea47eSEdward Tomasz Napierala 1515009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 1516009ea47eSEdward Tomasz Napierala static int 1517009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_connect(struct iscsi_softc *sc, 1518009ea47eSEdward Tomasz Napierala struct iscsi_daemon_connect *idc) 1519009ea47eSEdward Tomasz Napierala { 1520009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1521009ea47eSEdward Tomasz Napierala struct sockaddr *from_sa, *to_sa; 1522009ea47eSEdward Tomasz Napierala int error; 1523009ea47eSEdward Tomasz Napierala 1524009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1525009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1526009ea47eSEdward Tomasz Napierala if (is->is_id == idc->idc_session_id) 1527009ea47eSEdward Tomasz Napierala break; 1528009ea47eSEdward Tomasz Napierala } 1529009ea47eSEdward Tomasz Napierala if (is == NULL) { 1530009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1531009ea47eSEdward Tomasz Napierala return (ESRCH); 1532009ea47eSEdward Tomasz Napierala } 1533009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1534009ea47eSEdward Tomasz Napierala 1535009ea47eSEdward Tomasz Napierala if (idc->idc_from_addrlen > 0) { 1536009ea47eSEdward Tomasz Napierala error = getsockaddr(&from_sa, (void *)idc->idc_from_addr, idc->idc_from_addrlen); 153757a4f20bSEdward Tomasz Napierala if (error != 0) { 153857a4f20bSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, 153957a4f20bSEdward Tomasz Napierala "getsockaddr failed with error %d", error); 1540009ea47eSEdward Tomasz Napierala return (error); 154157a4f20bSEdward Tomasz Napierala } 1542009ea47eSEdward Tomasz Napierala } else { 1543009ea47eSEdward Tomasz Napierala from_sa = NULL; 1544009ea47eSEdward Tomasz Napierala } 1545009ea47eSEdward Tomasz Napierala error = getsockaddr(&to_sa, (void *)idc->idc_to_addr, idc->idc_to_addrlen); 1546009ea47eSEdward Tomasz Napierala if (error != 0) { 154757a4f20bSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "getsockaddr failed with error %d", 154857a4f20bSEdward Tomasz Napierala error); 1549009ea47eSEdward Tomasz Napierala free(from_sa, M_SONAME); 1550009ea47eSEdward Tomasz Napierala return (error); 1551009ea47eSEdward Tomasz Napierala } 1552009ea47eSEdward Tomasz Napierala 1553009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1554009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = false; 1555009ea47eSEdward Tomasz Napierala is->is_login_phase = true; 1556009ea47eSEdward Tomasz Napierala is->is_timeout = 0; 1557009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1558009ea47eSEdward Tomasz Napierala 1559f41492b0SEdward Tomasz Napierala error = icl_conn_connect(is->is_conn, idc->idc_domain, 1560009ea47eSEdward Tomasz Napierala idc->idc_socktype, idc->idc_protocol, from_sa, to_sa); 1561009ea47eSEdward Tomasz Napierala free(from_sa, M_SONAME); 1562009ea47eSEdward Tomasz Napierala free(to_sa, M_SONAME); 1563009ea47eSEdward Tomasz Napierala 1564009ea47eSEdward Tomasz Napierala /* 1565009ea47eSEdward Tomasz Napierala * Digests are always disabled during login phase. 1566009ea47eSEdward Tomasz Napierala */ 1567009ea47eSEdward Tomasz Napierala is->is_conn->ic_header_crc32c = false; 1568009ea47eSEdward Tomasz Napierala is->is_conn->ic_data_crc32c = false; 1569009ea47eSEdward Tomasz Napierala 1570009ea47eSEdward Tomasz Napierala return (error); 1571009ea47eSEdward Tomasz Napierala } 1572009ea47eSEdward Tomasz Napierala 1573009ea47eSEdward Tomasz Napierala static int 1574009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_send(struct iscsi_softc *sc, 1575009ea47eSEdward Tomasz Napierala struct iscsi_daemon_send *ids) 1576009ea47eSEdward Tomasz Napierala { 1577009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1578009ea47eSEdward Tomasz Napierala struct icl_pdu *ip; 1579009ea47eSEdward Tomasz Napierala size_t datalen; 1580009ea47eSEdward Tomasz Napierala void *data; 1581009ea47eSEdward Tomasz Napierala int error; 1582009ea47eSEdward Tomasz Napierala 1583009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1584009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1585009ea47eSEdward Tomasz Napierala if (is->is_id == ids->ids_session_id) 1586009ea47eSEdward Tomasz Napierala break; 1587009ea47eSEdward Tomasz Napierala } 1588009ea47eSEdward Tomasz Napierala if (is == NULL) { 1589009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1590009ea47eSEdward Tomasz Napierala return (ESRCH); 1591009ea47eSEdward Tomasz Napierala } 1592009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1593009ea47eSEdward Tomasz Napierala 1594009ea47eSEdward Tomasz Napierala if (is->is_login_phase == false) 1595009ea47eSEdward Tomasz Napierala return (EBUSY); 1596009ea47eSEdward Tomasz Napierala 1597009ea47eSEdward Tomasz Napierala if (is->is_terminating || is->is_reconnecting) 1598009ea47eSEdward Tomasz Napierala return (EIO); 1599009ea47eSEdward Tomasz Napierala 1600009ea47eSEdward Tomasz Napierala datalen = ids->ids_data_segment_len; 1601009ea47eSEdward Tomasz Napierala if (datalen > ISCSI_MAX_DATA_SEGMENT_LENGTH) 1602009ea47eSEdward Tomasz Napierala return (EINVAL); 1603009ea47eSEdward Tomasz Napierala if (datalen > 0) { 1604009ea47eSEdward Tomasz Napierala data = malloc(datalen, M_ISCSI, M_WAITOK); 1605009ea47eSEdward Tomasz Napierala error = copyin(ids->ids_data_segment, data, datalen); 1606009ea47eSEdward Tomasz Napierala if (error != 0) { 1607009ea47eSEdward Tomasz Napierala free(data, M_ISCSI); 1608009ea47eSEdward Tomasz Napierala return (error); 1609009ea47eSEdward Tomasz Napierala } 1610009ea47eSEdward Tomasz Napierala } 1611009ea47eSEdward Tomasz Napierala 1612d2d52b00SEdward Tomasz Napierala ip = icl_pdu_new(is->is_conn, M_WAITOK); 1613009ea47eSEdward Tomasz Napierala memcpy(ip->ip_bhs, ids->ids_bhs, sizeof(*ip->ip_bhs)); 1614009ea47eSEdward Tomasz Napierala if (datalen > 0) { 1615009ea47eSEdward Tomasz Napierala error = icl_pdu_append_data(ip, data, datalen, M_WAITOK); 1616009ea47eSEdward Tomasz Napierala KASSERT(error == 0, ("icl_pdu_append_data(..., M_WAITOK) failed")); 1617009ea47eSEdward Tomasz Napierala free(data, M_ISCSI); 1618009ea47eSEdward Tomasz Napierala } 1619d66a906bSEdward Tomasz Napierala iscsi_pdu_queue(ip); 1620009ea47eSEdward Tomasz Napierala 1621009ea47eSEdward Tomasz Napierala return (0); 1622009ea47eSEdward Tomasz Napierala } 1623009ea47eSEdward Tomasz Napierala 1624009ea47eSEdward Tomasz Napierala static int 1625009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_receive(struct iscsi_softc *sc, 1626009ea47eSEdward Tomasz Napierala struct iscsi_daemon_receive *idr) 1627009ea47eSEdward Tomasz Napierala { 1628009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1629009ea47eSEdward Tomasz Napierala struct icl_pdu *ip; 1630009ea47eSEdward Tomasz Napierala void *data; 16312f0586b2SEdward Tomasz Napierala int error; 1632009ea47eSEdward Tomasz Napierala 1633009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1634009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1635009ea47eSEdward Tomasz Napierala if (is->is_id == idr->idr_session_id) 1636009ea47eSEdward Tomasz Napierala break; 1637009ea47eSEdward Tomasz Napierala } 1638009ea47eSEdward Tomasz Napierala if (is == NULL) { 1639009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1640009ea47eSEdward Tomasz Napierala return (ESRCH); 1641009ea47eSEdward Tomasz Napierala } 1642009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1643009ea47eSEdward Tomasz Napierala 1644009ea47eSEdward Tomasz Napierala if (is->is_login_phase == false) 1645009ea47eSEdward Tomasz Napierala return (EBUSY); 1646009ea47eSEdward Tomasz Napierala 1647009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1648009ea47eSEdward Tomasz Napierala while (is->is_login_pdu == NULL && 1649009ea47eSEdward Tomasz Napierala is->is_terminating == false && 16502f0586b2SEdward Tomasz Napierala is->is_reconnecting == false) { 16512f0586b2SEdward Tomasz Napierala error = cv_wait_sig(&is->is_login_cv, &is->is_lock); 16522f0586b2SEdward Tomasz Napierala if (error != 0) { 16532f0586b2SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 16542f0586b2SEdward Tomasz Napierala return (error); 16552f0586b2SEdward Tomasz Napierala } 16562f0586b2SEdward Tomasz Napierala } 1657009ea47eSEdward Tomasz Napierala if (is->is_terminating || is->is_reconnecting) { 1658009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1659009ea47eSEdward Tomasz Napierala return (EIO); 1660009ea47eSEdward Tomasz Napierala } 1661009ea47eSEdward Tomasz Napierala ip = is->is_login_pdu; 1662009ea47eSEdward Tomasz Napierala is->is_login_pdu = NULL; 1663009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1664009ea47eSEdward Tomasz Napierala 1665009ea47eSEdward Tomasz Napierala if (ip->ip_data_len > idr->idr_data_segment_len) { 1666009ea47eSEdward Tomasz Napierala icl_pdu_free(ip); 1667009ea47eSEdward Tomasz Napierala return (EMSGSIZE); 1668009ea47eSEdward Tomasz Napierala } 1669009ea47eSEdward Tomasz Napierala 1670009ea47eSEdward Tomasz Napierala copyout(ip->ip_bhs, idr->idr_bhs, sizeof(*ip->ip_bhs)); 1671009ea47eSEdward Tomasz Napierala if (ip->ip_data_len > 0) { 1672009ea47eSEdward Tomasz Napierala data = malloc(ip->ip_data_len, M_ISCSI, M_WAITOK); 1673009ea47eSEdward Tomasz Napierala icl_pdu_get_data(ip, 0, data, ip->ip_data_len); 1674009ea47eSEdward Tomasz Napierala copyout(data, idr->idr_data_segment, ip->ip_data_len); 1675009ea47eSEdward Tomasz Napierala free(data, M_ISCSI); 1676009ea47eSEdward Tomasz Napierala } 1677009ea47eSEdward Tomasz Napierala 1678009ea47eSEdward Tomasz Napierala icl_pdu_free(ip); 1679009ea47eSEdward Tomasz Napierala 1680009ea47eSEdward Tomasz Napierala return (0); 1681009ea47eSEdward Tomasz Napierala } 1682009ea47eSEdward Tomasz Napierala #endif /* ICL_KERNEL_PROXY */ 1683009ea47eSEdward Tomasz Napierala 1684009ea47eSEdward Tomasz Napierala static void 1685009ea47eSEdward Tomasz Napierala iscsi_sanitize_session_conf(struct iscsi_session_conf *isc) 1686009ea47eSEdward Tomasz Napierala { 1687009ea47eSEdward Tomasz Napierala /* 1688009ea47eSEdward Tomasz Napierala * Just make sure all the fields are null-terminated. 1689009ea47eSEdward Tomasz Napierala * 1690009ea47eSEdward Tomasz Napierala * XXX: This is not particularly secure. We should 1691009ea47eSEdward Tomasz Napierala * create our own conf and then copy in relevant 1692009ea47eSEdward Tomasz Napierala * fields. 1693009ea47eSEdward Tomasz Napierala */ 1694009ea47eSEdward Tomasz Napierala isc->isc_initiator[ISCSI_NAME_LEN - 1] = '\0'; 1695009ea47eSEdward Tomasz Napierala isc->isc_initiator_addr[ISCSI_ADDR_LEN - 1] = '\0'; 1696009ea47eSEdward Tomasz Napierala isc->isc_initiator_alias[ISCSI_ALIAS_LEN - 1] = '\0'; 1697009ea47eSEdward Tomasz Napierala isc->isc_target[ISCSI_NAME_LEN - 1] = '\0'; 1698009ea47eSEdward Tomasz Napierala isc->isc_target_addr[ISCSI_ADDR_LEN - 1] = '\0'; 1699009ea47eSEdward Tomasz Napierala isc->isc_user[ISCSI_NAME_LEN - 1] = '\0'; 1700009ea47eSEdward Tomasz Napierala isc->isc_secret[ISCSI_SECRET_LEN - 1] = '\0'; 1701009ea47eSEdward Tomasz Napierala isc->isc_mutual_user[ISCSI_NAME_LEN - 1] = '\0'; 1702009ea47eSEdward Tomasz Napierala isc->isc_mutual_secret[ISCSI_SECRET_LEN - 1] = '\0'; 1703009ea47eSEdward Tomasz Napierala } 1704009ea47eSEdward Tomasz Napierala 170551be90b5SEdward Tomasz Napierala static bool 170651be90b5SEdward Tomasz Napierala iscsi_valid_session_conf(const struct iscsi_session_conf *isc) 170751be90b5SEdward Tomasz Napierala { 170851be90b5SEdward Tomasz Napierala 170951be90b5SEdward Tomasz Napierala if (isc->isc_initiator[0] == '\0') { 171051be90b5SEdward Tomasz Napierala ISCSI_DEBUG("empty isc_initiator"); 171151be90b5SEdward Tomasz Napierala return (false); 171251be90b5SEdward Tomasz Napierala } 171351be90b5SEdward Tomasz Napierala 171451be90b5SEdward Tomasz Napierala if (isc->isc_target_addr[0] == '\0') { 171551be90b5SEdward Tomasz Napierala ISCSI_DEBUG("empty isc_target_addr"); 171651be90b5SEdward Tomasz Napierala return (false); 171751be90b5SEdward Tomasz Napierala } 171851be90b5SEdward Tomasz Napierala 171951be90b5SEdward Tomasz Napierala if (isc->isc_discovery != 0 && isc->isc_target[0] != 0) { 172051be90b5SEdward Tomasz Napierala ISCSI_DEBUG("non-empty isc_target for discovery session"); 172151be90b5SEdward Tomasz Napierala return (false); 172251be90b5SEdward Tomasz Napierala } 172351be90b5SEdward Tomasz Napierala 172451be90b5SEdward Tomasz Napierala if (isc->isc_discovery == 0 && isc->isc_target[0] == 0) { 172551be90b5SEdward Tomasz Napierala ISCSI_DEBUG("empty isc_target for non-discovery session"); 172651be90b5SEdward Tomasz Napierala return (false); 172751be90b5SEdward Tomasz Napierala } 172851be90b5SEdward Tomasz Napierala 172951be90b5SEdward Tomasz Napierala return (true); 173051be90b5SEdward Tomasz Napierala } 173151be90b5SEdward Tomasz Napierala 1732009ea47eSEdward Tomasz Napierala static int 1733009ea47eSEdward Tomasz Napierala iscsi_ioctl_session_add(struct iscsi_softc *sc, struct iscsi_session_add *isa) 1734009ea47eSEdward Tomasz Napierala { 1735009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1736009ea47eSEdward Tomasz Napierala const struct iscsi_session *is2; 1737009ea47eSEdward Tomasz Napierala int error; 1738009ea47eSEdward Tomasz Napierala 1739009ea47eSEdward Tomasz Napierala iscsi_sanitize_session_conf(&isa->isa_conf); 174051be90b5SEdward Tomasz Napierala if (iscsi_valid_session_conf(&isa->isa_conf) == false) 174151be90b5SEdward Tomasz Napierala return (EINVAL); 1742009ea47eSEdward Tomasz Napierala 1743009ea47eSEdward Tomasz Napierala is = malloc(sizeof(*is), M_ISCSI, M_ZERO | M_WAITOK); 1744009ea47eSEdward Tomasz Napierala memcpy(&is->is_conf, &isa->isa_conf, sizeof(is->is_conf)); 1745009ea47eSEdward Tomasz Napierala 1746009ea47eSEdward Tomasz Napierala sx_xlock(&sc->sc_lock); 1747009ea47eSEdward Tomasz Napierala 1748009ea47eSEdward Tomasz Napierala /* 1749009ea47eSEdward Tomasz Napierala * Prevent duplicates. 1750009ea47eSEdward Tomasz Napierala */ 1751009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is2, &sc->sc_sessions, is_next) { 17527843bd03SEdward Tomasz Napierala if (!!is->is_conf.isc_discovery != 17537843bd03SEdward Tomasz Napierala !!is2->is_conf.isc_discovery) 17547843bd03SEdward Tomasz Napierala continue; 17557843bd03SEdward Tomasz Napierala 17567843bd03SEdward Tomasz Napierala if (strcmp(is->is_conf.isc_target_addr, 17577843bd03SEdward Tomasz Napierala is2->is_conf.isc_target_addr) != 0) 17587843bd03SEdward Tomasz Napierala continue; 17597843bd03SEdward Tomasz Napierala 17607843bd03SEdward Tomasz Napierala if (is->is_conf.isc_discovery == 0 && 17617843bd03SEdward Tomasz Napierala strcmp(is->is_conf.isc_target, 17627843bd03SEdward Tomasz Napierala is2->is_conf.isc_target) != 0) 17637843bd03SEdward Tomasz Napierala continue; 17647843bd03SEdward Tomasz Napierala 1765009ea47eSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 17667843bd03SEdward Tomasz Napierala free(is, M_ISCSI); 1767009ea47eSEdward Tomasz Napierala return (EBUSY); 1768009ea47eSEdward Tomasz Napierala } 1769009ea47eSEdward Tomasz Napierala 177082babffbSEdward Tomasz Napierala is->is_conn = icl_new_conn(is->is_conf.isc_offload, 177182babffbSEdward Tomasz Napierala "iscsi", &is->is_lock); 177282babffbSEdward Tomasz Napierala if (is->is_conn == NULL) { 177382babffbSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 177482babffbSEdward Tomasz Napierala free(is, M_ISCSI); 177582babffbSEdward Tomasz Napierala return (EINVAL); 177682babffbSEdward Tomasz Napierala } 1777009ea47eSEdward Tomasz Napierala is->is_conn->ic_receive = iscsi_receive_callback; 1778009ea47eSEdward Tomasz Napierala is->is_conn->ic_error = iscsi_error_callback; 1779009ea47eSEdward Tomasz Napierala is->is_conn->ic_prv0 = is; 1780009ea47eSEdward Tomasz Napierala TAILQ_INIT(&is->is_outstanding); 178116c158a5SEdward Tomasz Napierala STAILQ_INIT(&is->is_postponed); 1782009ea47eSEdward Tomasz Napierala mtx_init(&is->is_lock, "iscsi_lock", NULL, MTX_DEF); 1783009ea47eSEdward Tomasz Napierala cv_init(&is->is_maintenance_cv, "iscsi_mt"); 1784009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 1785009ea47eSEdward Tomasz Napierala cv_init(&is->is_login_cv, "iscsi_login"); 1786009ea47eSEdward Tomasz Napierala #endif 1787009ea47eSEdward Tomasz Napierala 1788009ea47eSEdward Tomasz Napierala is->is_softc = sc; 1789009ea47eSEdward Tomasz Napierala sc->sc_last_session_id++; 1790009ea47eSEdward Tomasz Napierala is->is_id = sc->sc_last_session_id; 1791ffe82e05SAlexander Motin is->is_isid[0] = 0x80; /* RFC 3720, 10.12.5: 10b, "Random" ISID. */ 1792ffe82e05SAlexander Motin arc4rand(&is->is_isid[1], 5, 0); 1793ffe82e05SAlexander Motin is->is_tsih = 0; 1794009ea47eSEdward Tomasz Napierala callout_init(&is->is_callout, 1); 1795009ea47eSEdward Tomasz Napierala 1796009ea47eSEdward Tomasz Napierala error = kthread_add(iscsi_maintenance_thread, is, NULL, NULL, 0, 0, "iscsimt"); 1797009ea47eSEdward Tomasz Napierala if (error != 0) { 1798009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "kthread_add(9) failed with error %d", error); 179909f2b94bSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 1800009ea47eSEdward Tomasz Napierala return (error); 1801009ea47eSEdward Tomasz Napierala } 1802009ea47eSEdward Tomasz Napierala 180309f2b94bSEdward Tomasz Napierala callout_reset(&is->is_callout, 1 * hz, iscsi_callout, is); 180409f2b94bSEdward Tomasz Napierala TAILQ_INSERT_TAIL(&sc->sc_sessions, is, is_next); 180509f2b94bSEdward Tomasz Napierala 1806009ea47eSEdward Tomasz Napierala /* 1807009ea47eSEdward Tomasz Napierala * Trigger immediate reconnection. 1808009ea47eSEdward Tomasz Napierala */ 18092be596adSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1810009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = true; 1811009ea47eSEdward Tomasz Napierala strlcpy(is->is_reason, "Waiting for iscsid(8)", sizeof(is->is_reason)); 18122be596adSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1813009ea47eSEdward Tomasz Napierala cv_signal(&sc->sc_cv); 1814009ea47eSEdward Tomasz Napierala 1815009ea47eSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 1816009ea47eSEdward Tomasz Napierala 1817009ea47eSEdward Tomasz Napierala return (0); 1818009ea47eSEdward Tomasz Napierala } 1819009ea47eSEdward Tomasz Napierala 1820009ea47eSEdward Tomasz Napierala static bool 1821009ea47eSEdward Tomasz Napierala iscsi_session_conf_matches(unsigned int id1, const struct iscsi_session_conf *c1, 1822009ea47eSEdward Tomasz Napierala unsigned int id2, const struct iscsi_session_conf *c2) 1823009ea47eSEdward Tomasz Napierala { 18246cc1e267SEdward Tomasz Napierala 18256cc1e267SEdward Tomasz Napierala if (id2 != 0 && id2 != id1) 1826009ea47eSEdward Tomasz Napierala return (false); 18276cc1e267SEdward Tomasz Napierala if (c2->isc_target[0] != '\0' && 18286cc1e267SEdward Tomasz Napierala strcmp(c1->isc_target, c2->isc_target) != 0) 18296cc1e267SEdward Tomasz Napierala return (false); 18306cc1e267SEdward Tomasz Napierala if (c2->isc_target_addr[0] != '\0' && 18316cc1e267SEdward Tomasz Napierala strcmp(c1->isc_target_addr, c2->isc_target_addr) != 0) 18326cc1e267SEdward Tomasz Napierala return (false); 18336cc1e267SEdward Tomasz Napierala return (true); 1834009ea47eSEdward Tomasz Napierala } 1835009ea47eSEdward Tomasz Napierala 1836009ea47eSEdward Tomasz Napierala static int 1837009ea47eSEdward Tomasz Napierala iscsi_ioctl_session_remove(struct iscsi_softc *sc, 1838009ea47eSEdward Tomasz Napierala struct iscsi_session_remove *isr) 1839009ea47eSEdward Tomasz Napierala { 1840009ea47eSEdward Tomasz Napierala struct iscsi_session *is, *tmp; 1841009ea47eSEdward Tomasz Napierala bool found = false; 1842009ea47eSEdward Tomasz Napierala 1843009ea47eSEdward Tomasz Napierala iscsi_sanitize_session_conf(&isr->isr_conf); 1844009ea47eSEdward Tomasz Napierala 1845009ea47eSEdward Tomasz Napierala sx_xlock(&sc->sc_lock); 1846009ea47eSEdward Tomasz Napierala TAILQ_FOREACH_SAFE(is, &sc->sc_sessions, is_next, tmp) { 1847009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1848009ea47eSEdward Tomasz Napierala if (iscsi_session_conf_matches(is->is_id, &is->is_conf, 1849009ea47eSEdward Tomasz Napierala isr->isr_session_id, &isr->isr_conf)) { 1850009ea47eSEdward Tomasz Napierala found = true; 1851009ea47eSEdward Tomasz Napierala iscsi_session_logout(is); 1852009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1853009ea47eSEdward Tomasz Napierala } 1854009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1855009ea47eSEdward Tomasz Napierala } 1856009ea47eSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 1857009ea47eSEdward Tomasz Napierala 1858009ea47eSEdward Tomasz Napierala if (!found) 1859009ea47eSEdward Tomasz Napierala return (ESRCH); 1860009ea47eSEdward Tomasz Napierala 1861009ea47eSEdward Tomasz Napierala return (0); 1862009ea47eSEdward Tomasz Napierala } 1863009ea47eSEdward Tomasz Napierala 1864009ea47eSEdward Tomasz Napierala static int 1865009ea47eSEdward Tomasz Napierala iscsi_ioctl_session_list(struct iscsi_softc *sc, struct iscsi_session_list *isl) 1866009ea47eSEdward Tomasz Napierala { 1867009ea47eSEdward Tomasz Napierala int error; 1868009ea47eSEdward Tomasz Napierala unsigned int i = 0; 1869009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1870009ea47eSEdward Tomasz Napierala struct iscsi_session_state iss; 1871009ea47eSEdward Tomasz Napierala 1872009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1873009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1874009ea47eSEdward Tomasz Napierala if (i >= isl->isl_nentries) { 1875009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1876009ea47eSEdward Tomasz Napierala return (EMSGSIZE); 1877009ea47eSEdward Tomasz Napierala } 1878009ea47eSEdward Tomasz Napierala memset(&iss, 0, sizeof(iss)); 1879009ea47eSEdward Tomasz Napierala memcpy(&iss.iss_conf, &is->is_conf, sizeof(iss.iss_conf)); 1880009ea47eSEdward Tomasz Napierala iss.iss_id = is->is_id; 1881009ea47eSEdward Tomasz Napierala strlcpy(iss.iss_target_alias, is->is_target_alias, sizeof(iss.iss_target_alias)); 1882009ea47eSEdward Tomasz Napierala strlcpy(iss.iss_reason, is->is_reason, sizeof(iss.iss_reason)); 188382babffbSEdward Tomasz Napierala strlcpy(iss.iss_offload, is->is_conn->ic_offload, sizeof(iss.iss_offload)); 1884009ea47eSEdward Tomasz Napierala 1885009ea47eSEdward Tomasz Napierala if (is->is_conn->ic_header_crc32c) 1886009ea47eSEdward Tomasz Napierala iss.iss_header_digest = ISCSI_DIGEST_CRC32C; 1887009ea47eSEdward Tomasz Napierala else 1888009ea47eSEdward Tomasz Napierala iss.iss_header_digest = ISCSI_DIGEST_NONE; 1889009ea47eSEdward Tomasz Napierala 1890009ea47eSEdward Tomasz Napierala if (is->is_conn->ic_data_crc32c) 1891009ea47eSEdward Tomasz Napierala iss.iss_data_digest = ISCSI_DIGEST_CRC32C; 1892009ea47eSEdward Tomasz Napierala else 1893009ea47eSEdward Tomasz Napierala iss.iss_data_digest = ISCSI_DIGEST_NONE; 1894009ea47eSEdward Tomasz Napierala 1895009ea47eSEdward Tomasz Napierala iss.iss_max_data_segment_length = is->is_max_data_segment_length; 1896009ea47eSEdward Tomasz Napierala iss.iss_immediate_data = is->is_immediate_data; 1897009ea47eSEdward Tomasz Napierala iss.iss_connected = is->is_connected; 1898009ea47eSEdward Tomasz Napierala 1899009ea47eSEdward Tomasz Napierala error = copyout(&iss, isl->isl_pstates + i, sizeof(iss)); 1900009ea47eSEdward Tomasz Napierala if (error != 0) { 1901009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1902009ea47eSEdward Tomasz Napierala return (error); 1903009ea47eSEdward Tomasz Napierala } 1904009ea47eSEdward Tomasz Napierala i++; 1905009ea47eSEdward Tomasz Napierala } 1906009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1907009ea47eSEdward Tomasz Napierala 1908009ea47eSEdward Tomasz Napierala isl->isl_nentries = i; 1909009ea47eSEdward Tomasz Napierala 1910009ea47eSEdward Tomasz Napierala return (0); 1911009ea47eSEdward Tomasz Napierala } 1912009ea47eSEdward Tomasz Napierala 1913009ea47eSEdward Tomasz Napierala static int 191451be90b5SEdward Tomasz Napierala iscsi_ioctl_session_modify(struct iscsi_softc *sc, 191551be90b5SEdward Tomasz Napierala struct iscsi_session_modify *ism) 191651be90b5SEdward Tomasz Napierala { 191751be90b5SEdward Tomasz Napierala struct iscsi_session *is; 191851be90b5SEdward Tomasz Napierala 191951be90b5SEdward Tomasz Napierala iscsi_sanitize_session_conf(&ism->ism_conf); 192051be90b5SEdward Tomasz Napierala if (iscsi_valid_session_conf(&ism->ism_conf) == false) 192151be90b5SEdward Tomasz Napierala return (EINVAL); 192251be90b5SEdward Tomasz Napierala 192351be90b5SEdward Tomasz Napierala sx_xlock(&sc->sc_lock); 192451be90b5SEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 192551be90b5SEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 192651be90b5SEdward Tomasz Napierala if (is->is_id == ism->ism_session_id) 192751be90b5SEdward Tomasz Napierala break; 192851be90b5SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 192951be90b5SEdward Tomasz Napierala } 193051be90b5SEdward Tomasz Napierala if (is == NULL) { 193151be90b5SEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 193251be90b5SEdward Tomasz Napierala return (ESRCH); 193351be90b5SEdward Tomasz Napierala } 193451be90b5SEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 193551be90b5SEdward Tomasz Napierala 193651be90b5SEdward Tomasz Napierala memcpy(&is->is_conf, &ism->ism_conf, sizeof(is->is_conf)); 193751be90b5SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 193851be90b5SEdward Tomasz Napierala 193951be90b5SEdward Tomasz Napierala iscsi_session_reconnect(is); 194051be90b5SEdward Tomasz Napierala 194151be90b5SEdward Tomasz Napierala return (0); 194251be90b5SEdward Tomasz Napierala } 194351be90b5SEdward Tomasz Napierala 194451be90b5SEdward Tomasz Napierala static int 1945009ea47eSEdward Tomasz Napierala iscsi_ioctl(struct cdev *dev, u_long cmd, caddr_t arg, int mode, 1946009ea47eSEdward Tomasz Napierala struct thread *td) 1947009ea47eSEdward Tomasz Napierala { 1948009ea47eSEdward Tomasz Napierala struct iscsi_softc *sc; 1949009ea47eSEdward Tomasz Napierala 1950009ea47eSEdward Tomasz Napierala sc = dev->si_drv1; 1951009ea47eSEdward Tomasz Napierala 1952009ea47eSEdward Tomasz Napierala switch (cmd) { 1953009ea47eSEdward Tomasz Napierala case ISCSIDWAIT: 1954009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_wait(sc, 1955009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_request *)arg)); 1956009ea47eSEdward Tomasz Napierala case ISCSIDHANDOFF: 1957009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_handoff(sc, 1958009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_handoff *)arg)); 1959009ea47eSEdward Tomasz Napierala case ISCSIDFAIL: 1960009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_fail(sc, 1961009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_fail *)arg)); 1962009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 1963009ea47eSEdward Tomasz Napierala case ISCSIDCONNECT: 1964009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_connect(sc, 1965009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_connect *)arg)); 1966009ea47eSEdward Tomasz Napierala case ISCSIDSEND: 1967009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_send(sc, 1968009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_send *)arg)); 1969009ea47eSEdward Tomasz Napierala case ISCSIDRECEIVE: 1970009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_receive(sc, 1971009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_receive *)arg)); 1972009ea47eSEdward Tomasz Napierala #endif /* ICL_KERNEL_PROXY */ 1973009ea47eSEdward Tomasz Napierala case ISCSISADD: 1974009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_session_add(sc, 1975009ea47eSEdward Tomasz Napierala (struct iscsi_session_add *)arg)); 1976009ea47eSEdward Tomasz Napierala case ISCSISREMOVE: 1977009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_session_remove(sc, 1978009ea47eSEdward Tomasz Napierala (struct iscsi_session_remove *)arg)); 1979009ea47eSEdward Tomasz Napierala case ISCSISLIST: 1980009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_session_list(sc, 1981009ea47eSEdward Tomasz Napierala (struct iscsi_session_list *)arg)); 198251be90b5SEdward Tomasz Napierala case ISCSISMODIFY: 198351be90b5SEdward Tomasz Napierala return (iscsi_ioctl_session_modify(sc, 198451be90b5SEdward Tomasz Napierala (struct iscsi_session_modify *)arg)); 1985009ea47eSEdward Tomasz Napierala default: 1986009ea47eSEdward Tomasz Napierala return (EINVAL); 1987009ea47eSEdward Tomasz Napierala } 1988009ea47eSEdward Tomasz Napierala } 1989009ea47eSEdward Tomasz Napierala 1990009ea47eSEdward Tomasz Napierala static struct iscsi_outstanding * 1991009ea47eSEdward Tomasz Napierala iscsi_outstanding_find(struct iscsi_session *is, uint32_t initiator_task_tag) 1992009ea47eSEdward Tomasz Napierala { 1993009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io; 1994009ea47eSEdward Tomasz Napierala 1995009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 1996009ea47eSEdward Tomasz Napierala 1997009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(io, &is->is_outstanding, io_next) { 1998009ea47eSEdward Tomasz Napierala if (io->io_initiator_task_tag == initiator_task_tag) 1999009ea47eSEdward Tomasz Napierala return (io); 2000009ea47eSEdward Tomasz Napierala } 2001009ea47eSEdward Tomasz Napierala return (NULL); 2002009ea47eSEdward Tomasz Napierala } 2003009ea47eSEdward Tomasz Napierala 2004aa75114cSAlexander Motin static struct iscsi_outstanding * 2005aa75114cSAlexander Motin iscsi_outstanding_find_ccb(struct iscsi_session *is, union ccb *ccb) 2006aa75114cSAlexander Motin { 2007aa75114cSAlexander Motin struct iscsi_outstanding *io; 2008aa75114cSAlexander Motin 2009aa75114cSAlexander Motin ISCSI_SESSION_LOCK_ASSERT(is); 2010aa75114cSAlexander Motin 2011aa75114cSAlexander Motin TAILQ_FOREACH(io, &is->is_outstanding, io_next) { 2012aa75114cSAlexander Motin if (io->io_ccb == ccb) 2013aa75114cSAlexander Motin return (io); 2014aa75114cSAlexander Motin } 2015aa75114cSAlexander Motin return (NULL); 2016aa75114cSAlexander Motin } 2017aa75114cSAlexander Motin 2018aa75114cSAlexander Motin static struct iscsi_outstanding * 2019604c023fSEdward Tomasz Napierala iscsi_outstanding_add(struct iscsi_session *is, struct icl_pdu *request, 20207a03d007SEdward Tomasz Napierala union ccb *ccb, uint32_t *initiator_task_tagp) 2021009ea47eSEdward Tomasz Napierala { 2022009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io; 20237a03d007SEdward Tomasz Napierala int error; 2024009ea47eSEdward Tomasz Napierala 2025009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 2026009ea47eSEdward Tomasz Napierala 2027009ea47eSEdward Tomasz Napierala io = uma_zalloc(iscsi_outstanding_zone, M_NOWAIT | M_ZERO); 2028009ea47eSEdward Tomasz Napierala if (io == NULL) { 20297a03d007SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate %zd bytes", 20307a03d007SEdward Tomasz Napierala sizeof(*io)); 2031aa75114cSAlexander Motin return (NULL); 2032009ea47eSEdward Tomasz Napierala } 20337a03d007SEdward Tomasz Napierala 2034604c023fSEdward Tomasz Napierala error = icl_conn_task_setup(is->is_conn, request, &ccb->csio, 20357a03d007SEdward Tomasz Napierala initiator_task_tagp, &io->io_icl_prv); 20367a03d007SEdward Tomasz Napierala if (error != 0) { 20377a03d007SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, 20387a03d007SEdward Tomasz Napierala "icl_conn_task_setup() failed with error %d", error); 20397a03d007SEdward Tomasz Napierala uma_zfree(iscsi_outstanding_zone, io); 20407a03d007SEdward Tomasz Napierala return (NULL); 20417a03d007SEdward Tomasz Napierala } 20427a03d007SEdward Tomasz Napierala 20437a03d007SEdward Tomasz Napierala KASSERT(iscsi_outstanding_find(is, *initiator_task_tagp) == NULL, 20447a03d007SEdward Tomasz Napierala ("initiator_task_tag 0x%x already added", *initiator_task_tagp)); 20457a03d007SEdward Tomasz Napierala 20467a03d007SEdward Tomasz Napierala io->io_initiator_task_tag = *initiator_task_tagp; 2047009ea47eSEdward Tomasz Napierala io->io_ccb = ccb; 2048009ea47eSEdward Tomasz Napierala TAILQ_INSERT_TAIL(&is->is_outstanding, io, io_next); 2049aa75114cSAlexander Motin return (io); 2050009ea47eSEdward Tomasz Napierala } 2051009ea47eSEdward Tomasz Napierala 2052009ea47eSEdward Tomasz Napierala static void 2053009ea47eSEdward Tomasz Napierala iscsi_outstanding_remove(struct iscsi_session *is, struct iscsi_outstanding *io) 2054009ea47eSEdward Tomasz Napierala { 2055009ea47eSEdward Tomasz Napierala 2056009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 2057009ea47eSEdward Tomasz Napierala 20587a03d007SEdward Tomasz Napierala icl_conn_task_done(is->is_conn, io->io_icl_prv); 2059009ea47eSEdward Tomasz Napierala TAILQ_REMOVE(&is->is_outstanding, io, io_next); 2060009ea47eSEdward Tomasz Napierala uma_zfree(iscsi_outstanding_zone, io); 2061009ea47eSEdward Tomasz Napierala } 2062009ea47eSEdward Tomasz Napierala 2063009ea47eSEdward Tomasz Napierala static void 2064aa75114cSAlexander Motin iscsi_action_abort(struct iscsi_session *is, union ccb *ccb) 2065aa75114cSAlexander Motin { 2066aa75114cSAlexander Motin struct icl_pdu *request; 2067aa75114cSAlexander Motin struct iscsi_bhs_task_management_request *bhstmr; 2068aa75114cSAlexander Motin struct ccb_abort *cab = &ccb->cab; 2069aa75114cSAlexander Motin struct iscsi_outstanding *io, *aio; 20707a03d007SEdward Tomasz Napierala uint32_t initiator_task_tag; 2071aa75114cSAlexander Motin 2072aa75114cSAlexander Motin ISCSI_SESSION_LOCK_ASSERT(is); 2073aa75114cSAlexander Motin 2074aa75114cSAlexander Motin #if 0 2075aa75114cSAlexander Motin KASSERT(is->is_login_phase == false, ("%s called during Login Phase", __func__)); 2076aa75114cSAlexander Motin #else 2077aa75114cSAlexander Motin if (is->is_login_phase) { 2078aa75114cSAlexander Motin ccb->ccb_h.status = CAM_REQ_ABORTED; 2079aa75114cSAlexander Motin xpt_done(ccb); 2080aa75114cSAlexander Motin return; 2081aa75114cSAlexander Motin } 2082aa75114cSAlexander Motin #endif 2083aa75114cSAlexander Motin 2084aa75114cSAlexander Motin aio = iscsi_outstanding_find_ccb(is, cab->abort_ccb); 2085aa75114cSAlexander Motin if (aio == NULL) { 2086aa75114cSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP; 2087aa75114cSAlexander Motin xpt_done(ccb); 2088aa75114cSAlexander Motin return; 2089aa75114cSAlexander Motin } 2090aa75114cSAlexander Motin 2091d2d52b00SEdward Tomasz Napierala request = icl_pdu_new(is->is_conn, M_NOWAIT); 2092aa75114cSAlexander Motin if (request == NULL) { 2093aa75114cSAlexander Motin ccb->ccb_h.status = CAM_RESRC_UNAVAIL; 2094aa75114cSAlexander Motin xpt_done(ccb); 2095aa75114cSAlexander Motin return; 2096aa75114cSAlexander Motin } 2097aa75114cSAlexander Motin 20987a03d007SEdward Tomasz Napierala initiator_task_tag = is->is_initiator_task_tag++; 2099aa75114cSAlexander Motin 2100604c023fSEdward Tomasz Napierala io = iscsi_outstanding_add(is, request, NULL, &initiator_task_tag); 2101aa75114cSAlexander Motin if (io == NULL) { 2102aa75114cSAlexander Motin icl_pdu_free(request); 2103aa75114cSAlexander Motin ccb->ccb_h.status = CAM_RESRC_UNAVAIL; 2104aa75114cSAlexander Motin xpt_done(ccb); 2105aa75114cSAlexander Motin return; 2106aa75114cSAlexander Motin } 2107aa75114cSAlexander Motin io->io_datasn = aio->io_initiator_task_tag; 21087a03d007SEdward Tomasz Napierala 21097a03d007SEdward Tomasz Napierala bhstmr = (struct iscsi_bhs_task_management_request *)request->ip_bhs; 21107a03d007SEdward Tomasz Napierala bhstmr->bhstmr_opcode = ISCSI_BHS_OPCODE_TASK_REQUEST; 21117a03d007SEdward Tomasz Napierala bhstmr->bhstmr_function = 0x80 | BHSTMR_FUNCTION_ABORT_TASK; 21127a03d007SEdward Tomasz Napierala bhstmr->bhstmr_lun = htobe64(CAM_EXTLUN_BYTE_SWIZZLE(ccb->ccb_h.target_lun)); 21137a03d007SEdward Tomasz Napierala bhstmr->bhstmr_initiator_task_tag = initiator_task_tag; 21147a03d007SEdward Tomasz Napierala bhstmr->bhstmr_referenced_task_tag = aio->io_initiator_task_tag; 21157a03d007SEdward Tomasz Napierala 2116aa75114cSAlexander Motin iscsi_pdu_queue_locked(request); 2117aa75114cSAlexander Motin } 2118aa75114cSAlexander Motin 2119aa75114cSAlexander Motin static void 2120009ea47eSEdward Tomasz Napierala iscsi_action_scsiio(struct iscsi_session *is, union ccb *ccb) 2121009ea47eSEdward Tomasz Napierala { 2122009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 2123009ea47eSEdward Tomasz Napierala struct iscsi_bhs_scsi_command *bhssc; 2124009ea47eSEdward Tomasz Napierala struct ccb_scsiio *csio; 2125aa75114cSAlexander Motin struct iscsi_outstanding *io; 2126009ea47eSEdward Tomasz Napierala size_t len; 21277a03d007SEdward Tomasz Napierala uint32_t initiator_task_tag; 2128009ea47eSEdward Tomasz Napierala int error; 2129009ea47eSEdward Tomasz Napierala 2130009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 2131009ea47eSEdward Tomasz Napierala 2132009ea47eSEdward Tomasz Napierala #if 0 2133009ea47eSEdward Tomasz Napierala KASSERT(is->is_login_phase == false, ("%s called during Login Phase", __func__)); 2134009ea47eSEdward Tomasz Napierala #else 2135009ea47eSEdward Tomasz Napierala if (is->is_login_phase) { 2136009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "called during login phase"); 2137009ea47eSEdward Tomasz Napierala if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 2138009ea47eSEdward Tomasz Napierala xpt_freeze_devq(ccb->ccb_h.path, 1); 2139009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 2140009ea47eSEdward Tomasz Napierala } 2141009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_REQ_ABORTED | CAM_DEV_QFRZN; 2142009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2143009ea47eSEdward Tomasz Napierala return; 2144009ea47eSEdward Tomasz Napierala } 2145009ea47eSEdward Tomasz Napierala #endif 2146009ea47eSEdward Tomasz Napierala 2147d2d52b00SEdward Tomasz Napierala request = icl_pdu_new(is->is_conn, M_NOWAIT); 2148009ea47eSEdward Tomasz Napierala if (request == NULL) { 2149009ea47eSEdward Tomasz Napierala if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 2150009ea47eSEdward Tomasz Napierala xpt_freeze_devq(ccb->ccb_h.path, 1); 2151009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 2152009ea47eSEdward Tomasz Napierala } 2153009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_RESRC_UNAVAIL | CAM_DEV_QFRZN; 2154009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2155009ea47eSEdward Tomasz Napierala return; 2156009ea47eSEdward Tomasz Napierala } 2157009ea47eSEdward Tomasz Napierala 21587a03d007SEdward Tomasz Napierala initiator_task_tag = is->is_initiator_task_tag++; 2159604c023fSEdward Tomasz Napierala io = iscsi_outstanding_add(is, request, ccb, &initiator_task_tag); 21607a03d007SEdward Tomasz Napierala if (io == NULL) { 21617a03d007SEdward Tomasz Napierala icl_pdu_free(request); 21627a03d007SEdward Tomasz Napierala if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 21637a03d007SEdward Tomasz Napierala xpt_freeze_devq(ccb->ccb_h.path, 1); 21647a03d007SEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 21657a03d007SEdward Tomasz Napierala } 21667a03d007SEdward Tomasz Napierala ccb->ccb_h.status = CAM_RESRC_UNAVAIL | CAM_DEV_QFRZN; 21677a03d007SEdward Tomasz Napierala xpt_done(ccb); 21687a03d007SEdward Tomasz Napierala return; 21697a03d007SEdward Tomasz Napierala } 21707a03d007SEdward Tomasz Napierala 2171009ea47eSEdward Tomasz Napierala csio = &ccb->csio; 2172009ea47eSEdward Tomasz Napierala bhssc = (struct iscsi_bhs_scsi_command *)request->ip_bhs; 2173009ea47eSEdward Tomasz Napierala bhssc->bhssc_opcode = ISCSI_BHS_OPCODE_SCSI_COMMAND; 2174009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_F; 2175009ea47eSEdward Tomasz Napierala switch (csio->ccb_h.flags & CAM_DIR_MASK) { 2176009ea47eSEdward Tomasz Napierala case CAM_DIR_IN: 2177009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_R; 2178009ea47eSEdward Tomasz Napierala break; 2179009ea47eSEdward Tomasz Napierala case CAM_DIR_OUT: 2180009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_W; 2181009ea47eSEdward Tomasz Napierala break; 2182009ea47eSEdward Tomasz Napierala } 2183009ea47eSEdward Tomasz Napierala 2184462cf3baSAlexander Motin if ((ccb->ccb_h.flags & CAM_TAG_ACTION_VALID) != 0) { 2185009ea47eSEdward Tomasz Napierala switch (csio->tag_action) { 2186009ea47eSEdward Tomasz Napierala case MSG_HEAD_OF_Q_TAG: 2187009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_HOQ; 2188009ea47eSEdward Tomasz Napierala break; 2189009ea47eSEdward Tomasz Napierala case MSG_ORDERED_Q_TAG: 2190009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_ORDERED; 2191009ea47eSEdward Tomasz Napierala break; 2192009ea47eSEdward Tomasz Napierala case MSG_ACA_TASK: 2193009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_ACA; 2194009ea47eSEdward Tomasz Napierala break; 2195009ea47eSEdward Tomasz Napierala case MSG_SIMPLE_Q_TAG: 2196009ea47eSEdward Tomasz Napierala default: 2197009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_SIMPLE; 2198009ea47eSEdward Tomasz Napierala break; 2199009ea47eSEdward Tomasz Napierala } 2200462cf3baSAlexander Motin } else 2201462cf3baSAlexander Motin bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_UNTAGGED; 2202009ea47eSEdward Tomasz Napierala 2203a9f2f291SEdward Tomasz Napierala bhssc->bhssc_lun = htobe64(CAM_EXTLUN_BYTE_SWIZZLE(ccb->ccb_h.target_lun)); 22047a03d007SEdward Tomasz Napierala bhssc->bhssc_initiator_task_tag = initiator_task_tag; 2205009ea47eSEdward Tomasz Napierala bhssc->bhssc_expected_data_transfer_length = htonl(csio->dxfer_len); 2206009ea47eSEdward Tomasz Napierala KASSERT(csio->cdb_len <= sizeof(bhssc->bhssc_cdb), 2207009ea47eSEdward Tomasz Napierala ("unsupported CDB size %zd", (size_t)csio->cdb_len)); 2208009ea47eSEdward Tomasz Napierala 2209009ea47eSEdward Tomasz Napierala if (csio->ccb_h.flags & CAM_CDB_POINTER) 2210009ea47eSEdward Tomasz Napierala memcpy(&bhssc->bhssc_cdb, csio->cdb_io.cdb_ptr, csio->cdb_len); 2211009ea47eSEdward Tomasz Napierala else 2212009ea47eSEdward Tomasz Napierala memcpy(&bhssc->bhssc_cdb, csio->cdb_io.cdb_bytes, csio->cdb_len); 2213009ea47eSEdward Tomasz Napierala 2214009ea47eSEdward Tomasz Napierala if (is->is_immediate_data && 2215009ea47eSEdward Tomasz Napierala (csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT) { 2216009ea47eSEdward Tomasz Napierala len = csio->dxfer_len; 2217009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "adding %zd of immediate data", len); 2218009ea47eSEdward Tomasz Napierala if (len > is->is_first_burst_length) { 2219009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "len %zd -> %zd", len, is->is_first_burst_length); 2220009ea47eSEdward Tomasz Napierala len = is->is_first_burst_length; 2221009ea47eSEdward Tomasz Napierala } 22223f9e1172SAlexander Motin if (len > is->is_max_data_segment_length) { 22233f9e1172SAlexander Motin ISCSI_SESSION_DEBUG(is, "len %zd -> %zd", len, is->is_max_data_segment_length); 22243f9e1172SAlexander Motin len = is->is_max_data_segment_length; 22253f9e1172SAlexander Motin } 2226009ea47eSEdward Tomasz Napierala 2227009ea47eSEdward Tomasz Napierala error = icl_pdu_append_data(request, csio->data_ptr, len, M_NOWAIT); 2228009ea47eSEdward Tomasz Napierala if (error != 0) { 2229938bcb04SEdward Tomasz Napierala iscsi_outstanding_remove(is, io); 2230009ea47eSEdward Tomasz Napierala icl_pdu_free(request); 2231009ea47eSEdward Tomasz Napierala if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 2232009ea47eSEdward Tomasz Napierala xpt_freeze_devq(ccb->ccb_h.path, 1); 2233009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 2234009ea47eSEdward Tomasz Napierala } 2235009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_RESRC_UNAVAIL | CAM_DEV_QFRZN; 2236009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2237009ea47eSEdward Tomasz Napierala return; 2238009ea47eSEdward Tomasz Napierala } 2239009ea47eSEdward Tomasz Napierala } 2240009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(request); 2241009ea47eSEdward Tomasz Napierala } 2242009ea47eSEdward Tomasz Napierala 2243009ea47eSEdward Tomasz Napierala static void 2244009ea47eSEdward Tomasz Napierala iscsi_action(struct cam_sim *sim, union ccb *ccb) 2245009ea47eSEdward Tomasz Napierala { 2246009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 2247009ea47eSEdward Tomasz Napierala 2248009ea47eSEdward Tomasz Napierala is = cam_sim_softc(sim); 2249009ea47eSEdward Tomasz Napierala 2250009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 2251009ea47eSEdward Tomasz Napierala 2252f1f12e40SEdward Tomasz Napierala if (is->is_terminating || 2253f1f12e40SEdward Tomasz Napierala (is->is_connected == false && fail_on_disconnection)) { 2254009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_DEV_NOT_THERE; 2255009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2256009ea47eSEdward Tomasz Napierala return; 2257009ea47eSEdward Tomasz Napierala } 2258009ea47eSEdward Tomasz Napierala 2259009ea47eSEdward Tomasz Napierala switch (ccb->ccb_h.func_code) { 2260009ea47eSEdward Tomasz Napierala case XPT_PATH_INQ: 2261009ea47eSEdward Tomasz Napierala { 2262009ea47eSEdward Tomasz Napierala struct ccb_pathinq *cpi = &ccb->cpi; 2263009ea47eSEdward Tomasz Napierala 2264009ea47eSEdward Tomasz Napierala cpi->version_num = 1; 2265009ea47eSEdward Tomasz Napierala cpi->hba_inquiry = PI_TAG_ABLE; 2266009ea47eSEdward Tomasz Napierala cpi->target_sprt = 0; 2267a9f2f291SEdward Tomasz Napierala cpi->hba_misc = PIM_EXTLUNS; 2268009ea47eSEdward Tomasz Napierala cpi->hba_eng_cnt = 0; 2269009ea47eSEdward Tomasz Napierala cpi->max_target = 0; 227017cf3eb1SEdward Tomasz Napierala /* 227117cf3eb1SEdward Tomasz Napierala * Note that the variable below is only relevant for targets 227217cf3eb1SEdward Tomasz Napierala * that don't claim compliance with anything above SPC2, which 227317cf3eb1SEdward Tomasz Napierala * means they don't support REPORT_LUNS. 227417cf3eb1SEdward Tomasz Napierala */ 227517cf3eb1SEdward Tomasz Napierala cpi->max_lun = 255; 2276a9f2f291SEdward Tomasz Napierala cpi->initiator_id = ~0; 22777843bd03SEdward Tomasz Napierala strlcpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); 22787843bd03SEdward Tomasz Napierala strlcpy(cpi->hba_vid, "iSCSI", HBA_IDLEN); 22797843bd03SEdward Tomasz Napierala strlcpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); 2280009ea47eSEdward Tomasz Napierala cpi->unit_number = cam_sim_unit(sim); 2281009ea47eSEdward Tomasz Napierala cpi->bus_id = cam_sim_bus(sim); 2282009ea47eSEdward Tomasz Napierala cpi->base_transfer_speed = 150000; /* XXX */ 2283009ea47eSEdward Tomasz Napierala cpi->transport = XPORT_ISCSI; 2284009ea47eSEdward Tomasz Napierala cpi->transport_version = 0; 2285009ea47eSEdward Tomasz Napierala cpi->protocol = PROTO_SCSI; 2286009ea47eSEdward Tomasz Napierala cpi->protocol_version = SCSI_REV_SPC3; 2287009ea47eSEdward Tomasz Napierala cpi->maxio = MAXPHYS; 2288009ea47eSEdward Tomasz Napierala cpi->ccb_h.status = CAM_REQ_CMP; 2289009ea47eSEdward Tomasz Napierala break; 2290009ea47eSEdward Tomasz Napierala } 2291462cf3baSAlexander Motin case XPT_GET_TRAN_SETTINGS: 2292462cf3baSAlexander Motin { 2293462cf3baSAlexander Motin struct ccb_trans_settings *cts; 2294462cf3baSAlexander Motin struct ccb_trans_settings_scsi *scsi; 2295462cf3baSAlexander Motin 2296462cf3baSAlexander Motin cts = &ccb->cts; 2297462cf3baSAlexander Motin scsi = &cts->proto_specific.scsi; 2298462cf3baSAlexander Motin 2299462cf3baSAlexander Motin cts->protocol = PROTO_SCSI; 2300462cf3baSAlexander Motin cts->protocol_version = SCSI_REV_SPC3; 2301462cf3baSAlexander Motin cts->transport = XPORT_ISCSI; 2302462cf3baSAlexander Motin cts->transport_version = 0; 2303462cf3baSAlexander Motin scsi->valid = CTS_SCSI_VALID_TQ; 2304462cf3baSAlexander Motin scsi->flags = CTS_SCSI_FLAGS_TAG_ENB; 2305462cf3baSAlexander Motin cts->ccb_h.status = CAM_REQ_CMP; 2306462cf3baSAlexander Motin break; 2307462cf3baSAlexander Motin } 2308009ea47eSEdward Tomasz Napierala case XPT_CALC_GEOMETRY: 2309009ea47eSEdward Tomasz Napierala cam_calc_geometry(&ccb->ccg, /*extended*/1); 2310009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_REQ_CMP; 2311009ea47eSEdward Tomasz Napierala break; 2312009ea47eSEdward Tomasz Napierala #if 0 2313009ea47eSEdward Tomasz Napierala /* 2314009ea47eSEdward Tomasz Napierala * XXX: What's the point? 2315009ea47eSEdward Tomasz Napierala */ 2316009ea47eSEdward Tomasz Napierala case XPT_RESET_BUS: 2317009ea47eSEdward Tomasz Napierala case XPT_TERM_IO: 2318009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "faking success for reset, abort, or term_io"); 2319009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_REQ_CMP; 2320009ea47eSEdward Tomasz Napierala break; 2321009ea47eSEdward Tomasz Napierala #endif 2322aa75114cSAlexander Motin case XPT_ABORT: 2323aa75114cSAlexander Motin iscsi_action_abort(is, ccb); 2324aa75114cSAlexander Motin return; 2325009ea47eSEdward Tomasz Napierala case XPT_SCSI_IO: 2326009ea47eSEdward Tomasz Napierala iscsi_action_scsiio(is, ccb); 2327009ea47eSEdward Tomasz Napierala return; 2328009ea47eSEdward Tomasz Napierala default: 2329009ea47eSEdward Tomasz Napierala #if 0 2330009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "got unsupported code 0x%x", ccb->ccb_h.func_code); 2331009ea47eSEdward Tomasz Napierala #endif 2332009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_FUNC_NOTAVAIL; 2333009ea47eSEdward Tomasz Napierala break; 2334009ea47eSEdward Tomasz Napierala } 2335009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2336009ea47eSEdward Tomasz Napierala } 2337009ea47eSEdward Tomasz Napierala 2338009ea47eSEdward Tomasz Napierala static void 2339009ea47eSEdward Tomasz Napierala iscsi_poll(struct cam_sim *sim) 2340009ea47eSEdward Tomasz Napierala { 2341009ea47eSEdward Tomasz Napierala 2342009ea47eSEdward Tomasz Napierala KASSERT(0, ("%s: you're not supposed to be here", __func__)); 2343009ea47eSEdward Tomasz Napierala } 2344009ea47eSEdward Tomasz Napierala 2345009ea47eSEdward Tomasz Napierala static void 2346481b36c6SSteven Hartland iscsi_terminate_sessions(struct iscsi_softc *sc) 2347009ea47eSEdward Tomasz Napierala { 2348009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 2349009ea47eSEdward Tomasz Napierala 2350481b36c6SSteven Hartland sx_slock(&sc->sc_lock); 2351481b36c6SSteven Hartland TAILQ_FOREACH(is, &sc->sc_sessions, is_next) 2352481b36c6SSteven Hartland iscsi_session_terminate(is); 2353481b36c6SSteven Hartland while(!TAILQ_EMPTY(&sc->sc_sessions)) { 2354481b36c6SSteven Hartland ISCSI_DEBUG("waiting for sessions to terminate"); 2355481b36c6SSteven Hartland cv_wait(&sc->sc_cv, &sc->sc_lock); 2356481b36c6SSteven Hartland } 2357481b36c6SSteven Hartland ISCSI_DEBUG("all sessions terminated"); 2358481b36c6SSteven Hartland sx_sunlock(&sc->sc_lock); 2359481b36c6SSteven Hartland } 2360481b36c6SSteven Hartland 2361481b36c6SSteven Hartland static void 2362481b36c6SSteven Hartland iscsi_shutdown_pre(struct iscsi_softc *sc) 2363481b36c6SSteven Hartland { 2364481b36c6SSteven Hartland struct iscsi_session *is; 2365481b36c6SSteven Hartland 2366481b36c6SSteven Hartland if (!fail_on_shutdown) 2367481b36c6SSteven Hartland return; 2368009ea47eSEdward Tomasz Napierala 2369e553ca49SEdward Tomasz Napierala /* 2370e553ca49SEdward Tomasz Napierala * If we have any sessions waiting for reconnection, request 2371e553ca49SEdward Tomasz Napierala * maintenance thread to fail them immediately instead of waiting 2372e553ca49SEdward Tomasz Napierala * for reconnect timeout. 2373481b36c6SSteven Hartland * 2374481b36c6SSteven Hartland * This prevents LUNs with mounted filesystems that are supported 2375481b36c6SSteven Hartland * by disconnected iSCSI sessions from hanging, however it will 2376481b36c6SSteven Hartland * fail all queued BIOs. 2377e553ca49SEdward Tomasz Napierala */ 2378481b36c6SSteven Hartland ISCSI_DEBUG("forcing failing all disconnected sessions due to shutdown"); 2379481b36c6SSteven Hartland 2380481b36c6SSteven Hartland fail_on_disconnection = 1; 2381481b36c6SSteven Hartland 2382009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 2383e553ca49SEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 2384e553ca49SEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 2385481b36c6SSteven Hartland if (!is->is_connected) { 2386481b36c6SSteven Hartland ISCSI_SESSION_DEBUG(is, "force failing disconnected session early"); 2387e553ca49SEdward Tomasz Napierala iscsi_session_reconnect(is); 2388481b36c6SSteven Hartland } 2389e553ca49SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 2390e553ca49SEdward Tomasz Napierala } 2391009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 2392009ea47eSEdward Tomasz Napierala } 2393009ea47eSEdward Tomasz Napierala 2394481b36c6SSteven Hartland static void 2395481b36c6SSteven Hartland iscsi_shutdown_post(struct iscsi_softc *sc) 2396481b36c6SSteven Hartland { 2397481b36c6SSteven Hartland 2398481b36c6SSteven Hartland ISCSI_DEBUG("removing all sessions due to shutdown"); 2399481b36c6SSteven Hartland iscsi_terminate_sessions(sc); 2400481b36c6SSteven Hartland } 2401481b36c6SSteven Hartland 2402009ea47eSEdward Tomasz Napierala static int 2403009ea47eSEdward Tomasz Napierala iscsi_load(void) 2404009ea47eSEdward Tomasz Napierala { 2405009ea47eSEdward Tomasz Napierala int error; 2406009ea47eSEdward Tomasz Napierala 2407009ea47eSEdward Tomasz Napierala sc = malloc(sizeof(*sc), M_ISCSI, M_ZERO | M_WAITOK); 2408009ea47eSEdward Tomasz Napierala sx_init(&sc->sc_lock, "iscsi"); 2409009ea47eSEdward Tomasz Napierala TAILQ_INIT(&sc->sc_sessions); 2410009ea47eSEdward Tomasz Napierala cv_init(&sc->sc_cv, "iscsi_cv"); 2411009ea47eSEdward Tomasz Napierala 2412009ea47eSEdward Tomasz Napierala iscsi_outstanding_zone = uma_zcreate("iscsi_outstanding", 2413009ea47eSEdward Tomasz Napierala sizeof(struct iscsi_outstanding), NULL, NULL, NULL, NULL, 2414c28c09c1SEdward Tomasz Napierala UMA_ALIGN_PTR, 0); 2415009ea47eSEdward Tomasz Napierala 2416009ea47eSEdward Tomasz Napierala error = make_dev_p(MAKEDEV_CHECKNAME, &sc->sc_cdev, &iscsi_cdevsw, 2417009ea47eSEdward Tomasz Napierala NULL, UID_ROOT, GID_WHEEL, 0600, "iscsi"); 2418009ea47eSEdward Tomasz Napierala if (error != 0) { 2419009ea47eSEdward Tomasz Napierala ISCSI_WARN("failed to create device node, error %d", error); 2420009ea47eSEdward Tomasz Napierala return (error); 2421009ea47eSEdward Tomasz Napierala } 2422009ea47eSEdward Tomasz Napierala sc->sc_cdev->si_drv1 = sc; 2423009ea47eSEdward Tomasz Napierala 2424481b36c6SSteven Hartland sc->sc_shutdown_pre_eh = EVENTHANDLER_REGISTER(shutdown_pre_sync, 2425481b36c6SSteven Hartland iscsi_shutdown_pre, sc, SHUTDOWN_PRI_FIRST); 2426481b36c6SSteven Hartland /* 2427481b36c6SSteven Hartland * shutdown_post_sync needs to run after filesystem shutdown and before 2428481b36c6SSteven Hartland * CAM shutdown - otherwise when rebooting with an iSCSI session that is 2429481b36c6SSteven Hartland * disconnected but has outstanding requests, dashutdown() will hang on 2430481b36c6SSteven Hartland * cam_periph_runccb(). 2431481b36c6SSteven Hartland */ 2432481b36c6SSteven Hartland sc->sc_shutdown_post_eh = EVENTHANDLER_REGISTER(shutdown_post_sync, 2433481b36c6SSteven Hartland iscsi_shutdown_post, sc, SHUTDOWN_PRI_DEFAULT - 1); 2434009ea47eSEdward Tomasz Napierala 2435009ea47eSEdward Tomasz Napierala return (0); 2436009ea47eSEdward Tomasz Napierala } 2437009ea47eSEdward Tomasz Napierala 2438009ea47eSEdward Tomasz Napierala static int 2439009ea47eSEdward Tomasz Napierala iscsi_unload(void) 2440009ea47eSEdward Tomasz Napierala { 2441009ea47eSEdward Tomasz Napierala 2442a667cf73SEdward Tomasz Napierala if (sc->sc_cdev != NULL) { 2443009ea47eSEdward Tomasz Napierala ISCSI_DEBUG("removing device node"); 2444009ea47eSEdward Tomasz Napierala destroy_dev(sc->sc_cdev); 2445009ea47eSEdward Tomasz Napierala ISCSI_DEBUG("device node removed"); 2446a667cf73SEdward Tomasz Napierala } 2447009ea47eSEdward Tomasz Napierala 2448481b36c6SSteven Hartland if (sc->sc_shutdown_pre_eh != NULL) 2449481b36c6SSteven Hartland EVENTHANDLER_DEREGISTER(shutdown_pre_sync, sc->sc_shutdown_pre_eh); 2450481b36c6SSteven Hartland if (sc->sc_shutdown_post_eh != NULL) 2451481b36c6SSteven Hartland EVENTHANDLER_DEREGISTER(shutdown_post_sync, sc->sc_shutdown_post_eh); 2452009ea47eSEdward Tomasz Napierala 2453481b36c6SSteven Hartland iscsi_terminate_sessions(sc); 2454009ea47eSEdward Tomasz Napierala 2455009ea47eSEdward Tomasz Napierala uma_zdestroy(iscsi_outstanding_zone); 2456009ea47eSEdward Tomasz Napierala sx_destroy(&sc->sc_lock); 2457009ea47eSEdward Tomasz Napierala cv_destroy(&sc->sc_cv); 2458009ea47eSEdward Tomasz Napierala free(sc, M_ISCSI); 2459009ea47eSEdward Tomasz Napierala return (0); 2460009ea47eSEdward Tomasz Napierala } 2461009ea47eSEdward Tomasz Napierala 2462009ea47eSEdward Tomasz Napierala static int 2463009ea47eSEdward Tomasz Napierala iscsi_quiesce(void) 2464009ea47eSEdward Tomasz Napierala { 2465009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 2466009ea47eSEdward Tomasz Napierala if (!TAILQ_EMPTY(&sc->sc_sessions)) { 2467009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 2468009ea47eSEdward Tomasz Napierala return (EBUSY); 2469009ea47eSEdward Tomasz Napierala } 2470009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 2471009ea47eSEdward Tomasz Napierala return (0); 2472009ea47eSEdward Tomasz Napierala } 2473009ea47eSEdward Tomasz Napierala 2474009ea47eSEdward Tomasz Napierala static int 2475009ea47eSEdward Tomasz Napierala iscsi_modevent(module_t mod, int what, void *arg) 2476009ea47eSEdward Tomasz Napierala { 2477009ea47eSEdward Tomasz Napierala int error; 2478009ea47eSEdward Tomasz Napierala 2479009ea47eSEdward Tomasz Napierala switch (what) { 2480009ea47eSEdward Tomasz Napierala case MOD_LOAD: 2481009ea47eSEdward Tomasz Napierala error = iscsi_load(); 2482009ea47eSEdward Tomasz Napierala break; 2483009ea47eSEdward Tomasz Napierala case MOD_UNLOAD: 2484009ea47eSEdward Tomasz Napierala error = iscsi_unload(); 2485009ea47eSEdward Tomasz Napierala break; 2486009ea47eSEdward Tomasz Napierala case MOD_QUIESCE: 2487009ea47eSEdward Tomasz Napierala error = iscsi_quiesce(); 2488009ea47eSEdward Tomasz Napierala break; 2489009ea47eSEdward Tomasz Napierala default: 2490009ea47eSEdward Tomasz Napierala error = EINVAL; 2491009ea47eSEdward Tomasz Napierala break; 2492009ea47eSEdward Tomasz Napierala } 2493009ea47eSEdward Tomasz Napierala return (error); 2494009ea47eSEdward Tomasz Napierala } 2495009ea47eSEdward Tomasz Napierala 2496009ea47eSEdward Tomasz Napierala moduledata_t iscsi_data = { 2497009ea47eSEdward Tomasz Napierala "iscsi", 2498009ea47eSEdward Tomasz Napierala iscsi_modevent, 2499009ea47eSEdward Tomasz Napierala 0 2500009ea47eSEdward Tomasz Napierala }; 2501009ea47eSEdward Tomasz Napierala 2502009ea47eSEdward Tomasz Napierala DECLARE_MODULE(iscsi, iscsi_data, SI_SUB_DRIVERS, SI_ORDER_MIDDLE); 2503009ea47eSEdward Tomasz Napierala MODULE_DEPEND(iscsi, cam, 1, 1, 1); 2504009ea47eSEdward Tomasz Napierala MODULE_DEPEND(iscsi, icl, 1, 1, 1); 2505