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 409ba165a31SEdward Tomasz Napierala if (is->is_conf.isc_enable == 0 && is->is_conf.isc_discovery == 0) { 410ba165a31SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 411ba165a31SEdward Tomasz Napierala return; 412ba165a31SEdward Tomasz Napierala } 413ba165a31SEdward Tomasz Napierala 414009ea47eSEdward Tomasz Napierala /* 415009ea47eSEdward Tomasz Napierala * Request immediate reconnection from iscsid(8). 416009ea47eSEdward Tomasz Napierala */ 417009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "waking up iscsid(8)"); 418009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = true; 419009ea47eSEdward Tomasz Napierala strlcpy(is->is_reason, "Waiting for iscsid(8)", sizeof(is->is_reason)); 420009ea47eSEdward Tomasz Napierala is->is_timeout = 0; 421009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 422009ea47eSEdward Tomasz Napierala cv_signal(&is->is_softc->sc_cv); 423009ea47eSEdward Tomasz Napierala } 424009ea47eSEdward Tomasz Napierala 425009ea47eSEdward Tomasz Napierala static void 426009ea47eSEdward Tomasz Napierala iscsi_maintenance_thread_terminate(struct iscsi_session *is) 427009ea47eSEdward Tomasz Napierala { 428009ea47eSEdward Tomasz Napierala struct iscsi_softc *sc; 429009ea47eSEdward Tomasz Napierala 430009ea47eSEdward Tomasz Napierala sc = is->is_softc; 431009ea47eSEdward Tomasz Napierala sx_xlock(&sc->sc_lock); 432009ea47eSEdward Tomasz Napierala 433009ea47eSEdward Tomasz Napierala icl_conn_close(is->is_conn); 434674074daSEdward Tomasz Napierala callout_drain(&is->is_callout); 435009ea47eSEdward Tomasz Napierala 436009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 437009ea47eSEdward Tomasz Napierala 438009ea47eSEdward Tomasz Napierala KASSERT(is->is_terminating, ("is_terminating == false")); 439009ea47eSEdward Tomasz Napierala 440009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 441009ea47eSEdward Tomasz Napierala if (is->is_login_pdu != NULL) { 442009ea47eSEdward Tomasz Napierala icl_pdu_free(is->is_login_pdu); 443009ea47eSEdward Tomasz Napierala is->is_login_pdu = NULL; 444009ea47eSEdward Tomasz Napierala } 445009ea47eSEdward Tomasz Napierala cv_signal(&is->is_login_cv); 446009ea47eSEdward Tomasz Napierala #endif 447009ea47eSEdward Tomasz Napierala 448f1f12e40SEdward Tomasz Napierala iscsi_session_cleanup(is, true); 449009ea47eSEdward Tomasz Napierala 450009ea47eSEdward Tomasz Napierala KASSERT(TAILQ_EMPTY(&is->is_outstanding), 451009ea47eSEdward Tomasz Napierala ("destroying session with active tasks")); 45216c158a5SEdward Tomasz Napierala KASSERT(STAILQ_EMPTY(&is->is_postponed), 453009ea47eSEdward Tomasz Napierala ("destroying session with postponed PDUs")); 454009ea47eSEdward Tomasz Napierala 455009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 456009ea47eSEdward Tomasz Napierala 457009ea47eSEdward Tomasz Napierala icl_conn_free(is->is_conn); 458009ea47eSEdward Tomasz Napierala mtx_destroy(&is->is_lock); 459009ea47eSEdward Tomasz Napierala cv_destroy(&is->is_maintenance_cv); 460009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 461009ea47eSEdward Tomasz Napierala cv_destroy(&is->is_login_cv); 462009ea47eSEdward Tomasz Napierala #endif 463481b36c6SSteven Hartland TAILQ_REMOVE(&sc->sc_sessions, is, is_next); 464481b36c6SSteven Hartland sx_xunlock(&sc->sc_lock); 465481b36c6SSteven Hartland 466009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "terminated"); 467009ea47eSEdward Tomasz Napierala free(is, M_ISCSI); 468009ea47eSEdward Tomasz Napierala 469009ea47eSEdward Tomasz Napierala /* 470009ea47eSEdward Tomasz Napierala * The iscsi_unload() routine might be waiting. 471009ea47eSEdward Tomasz Napierala */ 472009ea47eSEdward Tomasz Napierala cv_signal(&sc->sc_cv); 473009ea47eSEdward Tomasz Napierala } 474009ea47eSEdward Tomasz Napierala 475009ea47eSEdward Tomasz Napierala static void 476009ea47eSEdward Tomasz Napierala iscsi_maintenance_thread(void *arg) 477009ea47eSEdward Tomasz Napierala { 478009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 479009ea47eSEdward Tomasz Napierala 480009ea47eSEdward Tomasz Napierala is = arg; 481009ea47eSEdward Tomasz Napierala 482009ea47eSEdward Tomasz Napierala for (;;) { 483009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 484009ea47eSEdward Tomasz Napierala if (is->is_reconnecting == false && 485009ea47eSEdward Tomasz Napierala is->is_terminating == false && 48616c158a5SEdward Tomasz Napierala STAILQ_EMPTY(&is->is_postponed)) 487009ea47eSEdward Tomasz Napierala cv_wait(&is->is_maintenance_cv, &is->is_lock); 488009ea47eSEdward Tomasz Napierala 489481b36c6SSteven Hartland /* Terminate supersedes reconnect. */ 490009ea47eSEdward Tomasz Napierala if (is->is_terminating) { 491009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 492009ea47eSEdward Tomasz Napierala iscsi_maintenance_thread_terminate(is); 493009ea47eSEdward Tomasz Napierala kthread_exit(); 494009ea47eSEdward Tomasz Napierala return; 495009ea47eSEdward Tomasz Napierala } 496009ea47eSEdward Tomasz Napierala 497481b36c6SSteven Hartland if (is->is_reconnecting) { 498481b36c6SSteven Hartland ISCSI_SESSION_UNLOCK(is); 499481b36c6SSteven Hartland iscsi_maintenance_thread_reconnect(is); 500481b36c6SSteven Hartland continue; 501481b36c6SSteven Hartland } 502481b36c6SSteven Hartland 503009ea47eSEdward Tomasz Napierala iscsi_session_send_postponed(is); 504009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 505009ea47eSEdward Tomasz Napierala } 506009ea47eSEdward Tomasz Napierala } 507009ea47eSEdward Tomasz Napierala 508009ea47eSEdward Tomasz Napierala static void 509009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(struct iscsi_session *is) 510009ea47eSEdward Tomasz Napierala { 511009ea47eSEdward Tomasz Napierala 512009ea47eSEdward Tomasz Napierala /* 513009ea47eSEdward Tomasz Napierala * XXX: We can't use locking here, because 514009ea47eSEdward Tomasz Napierala * it's being called from various contexts. 515009ea47eSEdward Tomasz Napierala * Hope it doesn't break anything. 516009ea47eSEdward Tomasz Napierala */ 517009ea47eSEdward Tomasz Napierala if (is->is_reconnecting) 518009ea47eSEdward Tomasz Napierala return; 519009ea47eSEdward Tomasz Napierala 520009ea47eSEdward Tomasz Napierala is->is_reconnecting = true; 521009ea47eSEdward Tomasz Napierala cv_signal(&is->is_maintenance_cv); 522009ea47eSEdward Tomasz Napierala } 523009ea47eSEdward Tomasz Napierala 524009ea47eSEdward Tomasz Napierala static void 525009ea47eSEdward Tomasz Napierala iscsi_session_terminate(struct iscsi_session *is) 526009ea47eSEdward Tomasz Napierala { 527674074daSEdward Tomasz Napierala 528009ea47eSEdward Tomasz Napierala if (is->is_terminating) 529009ea47eSEdward Tomasz Napierala return; 530009ea47eSEdward Tomasz Napierala 531009ea47eSEdward Tomasz Napierala is->is_terminating = true; 532009ea47eSEdward Tomasz Napierala 533009ea47eSEdward Tomasz Napierala #if 0 534009ea47eSEdward Tomasz Napierala iscsi_session_logout(is); 535009ea47eSEdward Tomasz Napierala #endif 536009ea47eSEdward Tomasz Napierala cv_signal(&is->is_maintenance_cv); 537009ea47eSEdward Tomasz Napierala } 538009ea47eSEdward Tomasz Napierala 539009ea47eSEdward Tomasz Napierala static void 540009ea47eSEdward Tomasz Napierala iscsi_callout(void *context) 541009ea47eSEdward Tomasz Napierala { 542009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 543009ea47eSEdward Tomasz Napierala struct iscsi_bhs_nop_out *bhsno; 544009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 545009ea47eSEdward Tomasz Napierala bool reconnect_needed = false; 546009ea47eSEdward Tomasz Napierala 547009ea47eSEdward Tomasz Napierala is = context; 548009ea47eSEdward Tomasz Napierala 549674074daSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 550674074daSEdward Tomasz Napierala if (is->is_terminating) { 551674074daSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 552009ea47eSEdward Tomasz Napierala return; 553674074daSEdward Tomasz Napierala } 554009ea47eSEdward Tomasz Napierala 555009ea47eSEdward Tomasz Napierala callout_schedule(&is->is_callout, 1 * hz); 556009ea47eSEdward Tomasz Napierala 557ba165a31SEdward Tomasz Napierala if (is->is_conf.isc_enable == 0) 558ba165a31SEdward Tomasz Napierala goto out; 559ba165a31SEdward Tomasz Napierala 560009ea47eSEdward Tomasz Napierala is->is_timeout++; 561009ea47eSEdward Tomasz Napierala 562009ea47eSEdward Tomasz Napierala if (is->is_waiting_for_iscsid) { 5632c5b89e5SEdward Tomasz Napierala if (iscsid_timeout > 0 && is->is_timeout > iscsid_timeout) { 564009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "timed out waiting for iscsid(8) " 565009ea47eSEdward Tomasz Napierala "for %d seconds; reconnecting", 566009ea47eSEdward Tomasz Napierala is->is_timeout); 567009ea47eSEdward Tomasz Napierala reconnect_needed = true; 568009ea47eSEdward Tomasz Napierala } 569009ea47eSEdward Tomasz Napierala goto out; 570009ea47eSEdward Tomasz Napierala } 571009ea47eSEdward Tomasz Napierala 572009ea47eSEdward Tomasz Napierala if (is->is_login_phase) { 5732c5b89e5SEdward Tomasz Napierala if (login_timeout > 0 && is->is_timeout > login_timeout) { 574009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "login timed out after %d seconds; " 575009ea47eSEdward Tomasz Napierala "reconnecting", is->is_timeout); 576009ea47eSEdward Tomasz Napierala reconnect_needed = true; 577009ea47eSEdward Tomasz Napierala } 578009ea47eSEdward Tomasz Napierala goto out; 579009ea47eSEdward Tomasz Napierala } 580009ea47eSEdward Tomasz Napierala 5812c5b89e5SEdward Tomasz Napierala if (ping_timeout <= 0) { 5822c5b89e5SEdward Tomasz Napierala /* 5832c5b89e5SEdward Tomasz Napierala * Pings are disabled. Don't send NOP-Out in this case. 5842c5b89e5SEdward Tomasz Napierala * Reset the timeout, to avoid triggering reconnection, 5852c5b89e5SEdward Tomasz Napierala * should the user decide to reenable them. 5862c5b89e5SEdward Tomasz Napierala */ 5872c5b89e5SEdward Tomasz Napierala is->is_timeout = 0; 5882c5b89e5SEdward Tomasz Napierala goto out; 5892c5b89e5SEdward Tomasz Napierala } 5902c5b89e5SEdward Tomasz Napierala 591009ea47eSEdward Tomasz Napierala if (is->is_timeout >= ping_timeout) { 592009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "no ping reply (NOP-In) after %d seconds; " 593009ea47eSEdward Tomasz Napierala "reconnecting", ping_timeout); 594009ea47eSEdward Tomasz Napierala reconnect_needed = true; 595009ea47eSEdward Tomasz Napierala goto out; 596009ea47eSEdward Tomasz Napierala } 597009ea47eSEdward Tomasz Napierala 598009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 599009ea47eSEdward Tomasz Napierala 600009ea47eSEdward Tomasz Napierala /* 601009ea47eSEdward Tomasz Napierala * If the ping was reset less than one second ago - which means 602009ea47eSEdward Tomasz Napierala * that we've received some PDU during the last second - assume 603009ea47eSEdward Tomasz Napierala * the traffic flows correctly and don't bother sending a NOP-Out. 604009ea47eSEdward Tomasz Napierala * 605009ea47eSEdward Tomasz Napierala * (It's 2 - one for one second, and one for incrementing is_timeout 606009ea47eSEdward Tomasz Napierala * earlier in this routine.) 607009ea47eSEdward Tomasz Napierala */ 608009ea47eSEdward Tomasz Napierala if (is->is_timeout < 2) 609009ea47eSEdward Tomasz Napierala return; 610009ea47eSEdward Tomasz Napierala 611d2d52b00SEdward Tomasz Napierala request = icl_pdu_new(is->is_conn, M_NOWAIT); 61246aaea89SEdward Tomasz Napierala if (request == NULL) { 61346aaea89SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate PDU"); 61446aaea89SEdward Tomasz Napierala return; 61546aaea89SEdward Tomasz Napierala } 616009ea47eSEdward Tomasz Napierala bhsno = (struct iscsi_bhs_nop_out *)request->ip_bhs; 617009ea47eSEdward Tomasz Napierala bhsno->bhsno_opcode = ISCSI_BHS_OPCODE_NOP_OUT | 618009ea47eSEdward Tomasz Napierala ISCSI_BHS_OPCODE_IMMEDIATE; 619009ea47eSEdward Tomasz Napierala bhsno->bhsno_flags = 0x80; 620009ea47eSEdward Tomasz Napierala bhsno->bhsno_target_transfer_tag = 0xffffffff; 621009ea47eSEdward Tomasz Napierala iscsi_pdu_queue(request); 622009ea47eSEdward Tomasz Napierala return; 623009ea47eSEdward Tomasz Napierala 624009ea47eSEdward Tomasz Napierala out: 625481b36c6SSteven Hartland if (is->is_terminating) { 626481b36c6SSteven Hartland ISCSI_SESSION_UNLOCK(is); 627481b36c6SSteven Hartland return; 628481b36c6SSteven Hartland } 629481b36c6SSteven Hartland 630009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 631009ea47eSEdward Tomasz Napierala 632009ea47eSEdward Tomasz Napierala if (reconnect_needed) 633009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 634009ea47eSEdward Tomasz Napierala } 635009ea47eSEdward Tomasz Napierala 636009ea47eSEdward Tomasz Napierala static void 637009ea47eSEdward Tomasz Napierala iscsi_pdu_update_statsn(const struct icl_pdu *response) 638009ea47eSEdward Tomasz Napierala { 639009ea47eSEdward Tomasz Napierala const struct iscsi_bhs_data_in *bhsdi; 640009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 6412124e3b0SAlexander Motin uint32_t expcmdsn, maxcmdsn, statsn; 642009ea47eSEdward Tomasz Napierala 643009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 644009ea47eSEdward Tomasz Napierala 645009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 646009ea47eSEdward Tomasz Napierala 647009ea47eSEdward Tomasz Napierala /* 648009ea47eSEdward Tomasz Napierala * We're only using fields common for all the response 649009ea47eSEdward Tomasz Napierala * (target -> initiator) PDUs. 650009ea47eSEdward Tomasz Napierala */ 651009ea47eSEdward Tomasz Napierala bhsdi = (const struct iscsi_bhs_data_in *)response->ip_bhs; 652009ea47eSEdward Tomasz Napierala /* 653009ea47eSEdward Tomasz Napierala * Ok, I lied. In case of Data-In, "The fields StatSN, Status, 654009ea47eSEdward Tomasz Napierala * and Residual Count only have meaningful content if the S bit 655009ea47eSEdward Tomasz Napierala * is set to 1", so we also need to check the bit specific for 656009ea47eSEdward Tomasz Napierala * Data-In PDU. 657009ea47eSEdward Tomasz Napierala */ 658009ea47eSEdward Tomasz Napierala if (bhsdi->bhsdi_opcode != ISCSI_BHS_OPCODE_SCSI_DATA_IN || 659009ea47eSEdward Tomasz Napierala (bhsdi->bhsdi_flags & BHSDI_FLAGS_S) != 0) { 6602124e3b0SAlexander Motin statsn = ntohl(bhsdi->bhsdi_statsn); 6612124e3b0SAlexander Motin if (statsn != is->is_statsn && statsn != (is->is_statsn + 1)) { 6622124e3b0SAlexander Motin /* XXX: This is normal situation for MCS */ 6632124e3b0SAlexander Motin ISCSI_SESSION_WARN(is, "PDU 0x%x StatSN %u != " 6642124e3b0SAlexander Motin "session ExpStatSN %u (or + 1); reconnecting", 6652124e3b0SAlexander Motin bhsdi->bhsdi_opcode, statsn, is->is_statsn); 6662124e3b0SAlexander Motin iscsi_session_reconnect(is); 667009ea47eSEdward Tomasz Napierala } 6682124e3b0SAlexander Motin if (ISCSI_SNGT(statsn, is->is_statsn)) 6692124e3b0SAlexander Motin is->is_statsn = statsn; 670009ea47eSEdward Tomasz Napierala } 671009ea47eSEdward Tomasz Napierala 672009ea47eSEdward Tomasz Napierala expcmdsn = ntohl(bhsdi->bhsdi_expcmdsn); 673009ea47eSEdward Tomasz Napierala maxcmdsn = ntohl(bhsdi->bhsdi_maxcmdsn); 674009ea47eSEdward Tomasz Napierala 6752124e3b0SAlexander Motin if (ISCSI_SNLT(maxcmdsn + 1, expcmdsn)) { 6762124e3b0SAlexander Motin ISCSI_SESSION_DEBUG(is, 6772124e3b0SAlexander Motin "PDU MaxCmdSN %u + 1 < PDU ExpCmdSN %u; ignoring", 678009ea47eSEdward Tomasz Napierala maxcmdsn, expcmdsn); 679009ea47eSEdward Tomasz Napierala } else { 6802124e3b0SAlexander Motin if (ISCSI_SNGT(maxcmdsn, is->is_maxcmdsn)) { 681009ea47eSEdward Tomasz Napierala is->is_maxcmdsn = maxcmdsn; 682009ea47eSEdward Tomasz Napierala 683009ea47eSEdward Tomasz Napierala /* 684009ea47eSEdward Tomasz Napierala * Command window increased; kick the maintanance thread 685009ea47eSEdward Tomasz Napierala * to send out postponed commands. 686009ea47eSEdward Tomasz Napierala */ 68716c158a5SEdward Tomasz Napierala if (!STAILQ_EMPTY(&is->is_postponed)) 688009ea47eSEdward Tomasz Napierala cv_signal(&is->is_maintenance_cv); 6892124e3b0SAlexander Motin } else if (ISCSI_SNLT(maxcmdsn, is->is_maxcmdsn)) { 6902124e3b0SAlexander Motin /* XXX: This is normal situation for MCS */ 6912124e3b0SAlexander Motin ISCSI_SESSION_DEBUG(is, 6922124e3b0SAlexander Motin "PDU MaxCmdSN %u < session MaxCmdSN %u; ignoring", 693009ea47eSEdward Tomasz Napierala maxcmdsn, is->is_maxcmdsn); 694009ea47eSEdward Tomasz Napierala } 695009ea47eSEdward Tomasz Napierala 6962124e3b0SAlexander Motin if (ISCSI_SNGT(expcmdsn, is->is_expcmdsn)) { 697009ea47eSEdward Tomasz Napierala is->is_expcmdsn = expcmdsn; 6982124e3b0SAlexander Motin } else if (ISCSI_SNLT(expcmdsn, is->is_expcmdsn)) { 6992124e3b0SAlexander Motin /* XXX: This is normal situation for MCS */ 7002124e3b0SAlexander Motin ISCSI_SESSION_DEBUG(is, 7012124e3b0SAlexander Motin "PDU ExpCmdSN %u < session ExpCmdSN %u; ignoring", 702009ea47eSEdward Tomasz Napierala expcmdsn, is->is_expcmdsn); 703009ea47eSEdward Tomasz Napierala } 704009ea47eSEdward Tomasz Napierala } 705009ea47eSEdward Tomasz Napierala 706009ea47eSEdward Tomasz Napierala /* 707009ea47eSEdward Tomasz Napierala * Every incoming PDU - not just NOP-In - resets the ping timer. 708009ea47eSEdward Tomasz Napierala * The purpose of the timeout is to reset the connection when it stalls; 709009ea47eSEdward Tomasz Napierala * we don't want this to happen when NOP-In or NOP-Out ends up delayed 710009ea47eSEdward Tomasz Napierala * in some queue. 711009ea47eSEdward Tomasz Napierala */ 712009ea47eSEdward Tomasz Napierala is->is_timeout = 0; 713009ea47eSEdward Tomasz Napierala } 714009ea47eSEdward Tomasz Napierala 715009ea47eSEdward Tomasz Napierala static void 716009ea47eSEdward Tomasz Napierala iscsi_receive_callback(struct icl_pdu *response) 717009ea47eSEdward Tomasz Napierala { 718009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 719009ea47eSEdward Tomasz Napierala 720009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 721009ea47eSEdward Tomasz Napierala 722009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 723009ea47eSEdward Tomasz Napierala 724d66a906bSEdward Tomasz Napierala iscsi_pdu_update_statsn(response); 725d66a906bSEdward Tomasz Napierala 726009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 727009ea47eSEdward Tomasz Napierala if (is->is_login_phase) { 728009ea47eSEdward Tomasz Napierala if (is->is_login_pdu == NULL) 729009ea47eSEdward Tomasz Napierala is->is_login_pdu = response; 730009ea47eSEdward Tomasz Napierala else 731009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 732009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 733009ea47eSEdward Tomasz Napierala cv_signal(&is->is_login_cv); 734009ea47eSEdward Tomasz Napierala return; 735009ea47eSEdward Tomasz Napierala } 736009ea47eSEdward Tomasz Napierala #endif 737009ea47eSEdward Tomasz Napierala 738009ea47eSEdward Tomasz Napierala /* 739009ea47eSEdward Tomasz Napierala * The handling routine is responsible for freeing the PDU 740009ea47eSEdward Tomasz Napierala * when it's no longer needed. 741009ea47eSEdward Tomasz Napierala */ 742009ea47eSEdward Tomasz Napierala switch (response->ip_bhs->bhs_opcode) { 743009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_NOP_IN: 744009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_nop_in(response); 745c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 746009ea47eSEdward Tomasz Napierala break; 747009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_SCSI_RESPONSE: 748009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_scsi_response(response); 749c215ad3aSAlexander Motin /* Session lock dropped inside. */ 750c215ad3aSAlexander Motin ISCSI_SESSION_LOCK_ASSERT_NOT(is); 751009ea47eSEdward Tomasz Napierala break; 752aa75114cSAlexander Motin case ISCSI_BHS_OPCODE_TASK_RESPONSE: 753aa75114cSAlexander Motin iscsi_pdu_handle_task_response(response); 754c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 755aa75114cSAlexander Motin break; 756009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_SCSI_DATA_IN: 757009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_data_in(response); 758c215ad3aSAlexander Motin /* Session lock dropped inside. */ 759c215ad3aSAlexander Motin ISCSI_SESSION_LOCK_ASSERT_NOT(is); 760009ea47eSEdward Tomasz Napierala break; 761009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_LOGOUT_RESPONSE: 762009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_logout_response(response); 763c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 764009ea47eSEdward Tomasz Napierala break; 765009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_R2T: 766009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_r2t(response); 767c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 768009ea47eSEdward Tomasz Napierala break; 769009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_ASYNC_MESSAGE: 770009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_async_message(response); 771c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 772009ea47eSEdward Tomasz Napierala break; 773009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_REJECT: 774009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_reject(response); 775c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 776009ea47eSEdward Tomasz Napierala break; 777009ea47eSEdward Tomasz Napierala default: 778009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "received PDU with unsupported " 779009ea47eSEdward Tomasz Napierala "opcode 0x%x; reconnecting", 780009ea47eSEdward Tomasz Napierala response->ip_bhs->bhs_opcode); 781009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 782c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 783009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 784009ea47eSEdward Tomasz Napierala } 785009ea47eSEdward Tomasz Napierala } 786009ea47eSEdward Tomasz Napierala 787009ea47eSEdward Tomasz Napierala static void 788009ea47eSEdward Tomasz Napierala iscsi_error_callback(struct icl_conn *ic) 789009ea47eSEdward Tomasz Napierala { 790009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 791009ea47eSEdward Tomasz Napierala 792009ea47eSEdward Tomasz Napierala is = CONN_SESSION(ic); 793009ea47eSEdward Tomasz Napierala 794009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "connection error; reconnecting"); 795009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 796009ea47eSEdward Tomasz Napierala } 797009ea47eSEdward Tomasz Napierala 798009ea47eSEdward Tomasz Napierala static void 799009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_nop_in(struct icl_pdu *response) 800009ea47eSEdward Tomasz Napierala { 8011008ac5eSEdward Tomasz Napierala struct iscsi_session *is; 802009ea47eSEdward Tomasz Napierala struct iscsi_bhs_nop_out *bhsno; 803009ea47eSEdward Tomasz Napierala struct iscsi_bhs_nop_in *bhsni; 804009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 8051008ac5eSEdward Tomasz Napierala void *data = NULL; 8061008ac5eSEdward Tomasz Napierala size_t datasize; 8071008ac5eSEdward Tomasz Napierala int error; 808009ea47eSEdward Tomasz Napierala 8091008ac5eSEdward Tomasz Napierala is = PDU_SESSION(response); 810009ea47eSEdward Tomasz Napierala bhsni = (struct iscsi_bhs_nop_in *)response->ip_bhs; 811009ea47eSEdward Tomasz Napierala 812009ea47eSEdward Tomasz Napierala if (bhsni->bhsni_target_transfer_tag == 0xffffffff) { 813009ea47eSEdward Tomasz Napierala /* 814009ea47eSEdward Tomasz Napierala * Nothing to do; iscsi_pdu_update_statsn() already 815009ea47eSEdward Tomasz Napierala * zeroed the timeout. 816009ea47eSEdward Tomasz Napierala */ 817009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 818009ea47eSEdward Tomasz Napierala return; 819009ea47eSEdward Tomasz Napierala } 820009ea47eSEdward Tomasz Napierala 8211008ac5eSEdward Tomasz Napierala datasize = icl_pdu_data_segment_length(response); 8221008ac5eSEdward Tomasz Napierala if (datasize > 0) { 8231008ac5eSEdward Tomasz Napierala data = malloc(datasize, M_ISCSI, M_NOWAIT | M_ZERO); 8241008ac5eSEdward Tomasz Napierala if (data == NULL) { 8251008ac5eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate memory; " 8261008ac5eSEdward Tomasz Napierala "reconnecting"); 8271008ac5eSEdward Tomasz Napierala icl_pdu_free(response); 8281008ac5eSEdward Tomasz Napierala iscsi_session_reconnect(is); 8291008ac5eSEdward Tomasz Napierala return; 8301008ac5eSEdward Tomasz Napierala } 8311008ac5eSEdward Tomasz Napierala icl_pdu_get_data(response, 0, data, datasize); 8321008ac5eSEdward Tomasz Napierala } 8331008ac5eSEdward Tomasz Napierala 834d2d52b00SEdward Tomasz Napierala request = icl_pdu_new(response->ip_conn, M_NOWAIT); 835009ea47eSEdward Tomasz Napierala if (request == NULL) { 8361008ac5eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate memory; " 8371008ac5eSEdward Tomasz Napierala "reconnecting"); 8381008ac5eSEdward Tomasz Napierala free(data, M_ISCSI); 839009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 8401008ac5eSEdward Tomasz Napierala iscsi_session_reconnect(is); 841009ea47eSEdward Tomasz Napierala return; 842009ea47eSEdward Tomasz Napierala } 843009ea47eSEdward Tomasz Napierala bhsno = (struct iscsi_bhs_nop_out *)request->ip_bhs; 844009ea47eSEdward Tomasz Napierala bhsno->bhsno_opcode = ISCSI_BHS_OPCODE_NOP_OUT | 845009ea47eSEdward Tomasz Napierala ISCSI_BHS_OPCODE_IMMEDIATE; 846009ea47eSEdward Tomasz Napierala bhsno->bhsno_flags = 0x80; 8471008ac5eSEdward Tomasz Napierala bhsno->bhsno_initiator_task_tag = 0xffffffff; 848009ea47eSEdward Tomasz Napierala bhsno->bhsno_target_transfer_tag = bhsni->bhsni_target_transfer_tag; 8491008ac5eSEdward Tomasz Napierala if (datasize > 0) { 8501008ac5eSEdward Tomasz Napierala error = icl_pdu_append_data(request, data, datasize, M_NOWAIT); 8511008ac5eSEdward Tomasz Napierala if (error != 0) { 8521008ac5eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate memory; " 8531008ac5eSEdward Tomasz Napierala "reconnecting"); 8541008ac5eSEdward Tomasz Napierala free(data, M_ISCSI); 8551008ac5eSEdward Tomasz Napierala icl_pdu_free(request); 8561008ac5eSEdward Tomasz Napierala icl_pdu_free(response); 8571008ac5eSEdward Tomasz Napierala iscsi_session_reconnect(is); 8581008ac5eSEdward Tomasz Napierala return; 8591008ac5eSEdward Tomasz Napierala } 8601008ac5eSEdward Tomasz Napierala free(data, M_ISCSI); 8611008ac5eSEdward Tomasz Napierala } 862009ea47eSEdward Tomasz Napierala 863009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 864009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(request); 865009ea47eSEdward Tomasz Napierala } 866009ea47eSEdward Tomasz Napierala 867009ea47eSEdward Tomasz Napierala static void 868009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_scsi_response(struct icl_pdu *response) 869009ea47eSEdward Tomasz Napierala { 870009ea47eSEdward Tomasz Napierala struct iscsi_bhs_scsi_response *bhssr; 871009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io; 872009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 87373e2e95dSAlexander Motin union ccb *ccb; 874009ea47eSEdward Tomasz Napierala struct ccb_scsiio *csio; 87573e2e95dSAlexander Motin size_t data_segment_len, received; 876009ea47eSEdward Tomasz Napierala uint16_t sense_len; 877bcec64bcSEdward Tomasz Napierala uint32_t resid; 878009ea47eSEdward Tomasz Napierala 879009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 880009ea47eSEdward Tomasz Napierala 881009ea47eSEdward Tomasz Napierala bhssr = (struct iscsi_bhs_scsi_response *)response->ip_bhs; 882009ea47eSEdward Tomasz Napierala io = iscsi_outstanding_find(is, bhssr->bhssr_initiator_task_tag); 883aa75114cSAlexander Motin if (io == NULL || io->io_ccb == NULL) { 884009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "bad itt 0x%x", bhssr->bhssr_initiator_task_tag); 885009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 886009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 887c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 888009ea47eSEdward Tomasz Napierala return; 889009ea47eSEdward Tomasz Napierala } 890009ea47eSEdward Tomasz Napierala 89173e2e95dSAlexander Motin ccb = io->io_ccb; 892bcec64bcSEdward Tomasz Napierala 893bcec64bcSEdward Tomasz Napierala /* 894bcec64bcSEdward Tomasz Napierala * With iSER, after getting good response we can be sure 895bcec64bcSEdward Tomasz Napierala * that all the data has been successfully transferred. 896bcec64bcSEdward Tomasz Napierala */ 897bcec64bcSEdward Tomasz Napierala if (is->is_conn->ic_iser) { 898bcec64bcSEdward Tomasz Napierala resid = ntohl(bhssr->bhssr_residual_count); 899bcec64bcSEdward Tomasz Napierala if (bhssr->bhssr_flags & BHSSR_FLAGS_RESIDUAL_UNDERFLOW) { 900bcec64bcSEdward Tomasz Napierala io->io_received = ccb->csio.dxfer_len - resid; 901bcec64bcSEdward Tomasz Napierala } else if (bhssr->bhssr_flags & BHSSR_FLAGS_RESIDUAL_OVERFLOW) { 902bcec64bcSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "overflow: target indicates %d", resid); 903bcec64bcSEdward Tomasz Napierala } else { 904bcec64bcSEdward Tomasz Napierala io->io_received = ccb->csio.dxfer_len; 905bcec64bcSEdward Tomasz Napierala } 906bcec64bcSEdward Tomasz Napierala } 907bcec64bcSEdward Tomasz Napierala 90873e2e95dSAlexander Motin received = io->io_received; 909c215ad3aSAlexander Motin iscsi_outstanding_remove(is, io); 910c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 911c215ad3aSAlexander Motin 912009ea47eSEdward Tomasz Napierala if (bhssr->bhssr_response != BHSSR_RESPONSE_COMMAND_COMPLETED) { 913009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "service response 0x%x", bhssr->bhssr_response); 91473e2e95dSAlexander Motin if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 91573e2e95dSAlexander Motin xpt_freeze_devq(ccb->ccb_h.path, 1); 916009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 917009ea47eSEdward Tomasz Napierala } 91873e2e95dSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP_ERR | CAM_DEV_QFRZN; 919009ea47eSEdward Tomasz Napierala } else if (bhssr->bhssr_status == 0) { 92073e2e95dSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP; 921009ea47eSEdward Tomasz Napierala } else { 92273e2e95dSAlexander Motin if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 92373e2e95dSAlexander Motin xpt_freeze_devq(ccb->ccb_h.path, 1); 924009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 925009ea47eSEdward Tomasz Napierala } 92673e2e95dSAlexander Motin ccb->ccb_h.status = CAM_SCSI_STATUS_ERROR | CAM_DEV_QFRZN; 92773e2e95dSAlexander Motin ccb->csio.scsi_status = bhssr->bhssr_status; 928009ea47eSEdward Tomasz Napierala } 929009ea47eSEdward Tomasz Napierala 93073e2e95dSAlexander Motin csio = &ccb->csio; 931009ea47eSEdward Tomasz Napierala data_segment_len = icl_pdu_data_segment_length(response); 932009ea47eSEdward Tomasz Napierala if (data_segment_len > 0) { 933009ea47eSEdward Tomasz Napierala if (data_segment_len < sizeof(sense_len)) { 934009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "truncated data segment (%zd bytes)", 935009ea47eSEdward Tomasz Napierala data_segment_len); 93673e2e95dSAlexander Motin if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 93773e2e95dSAlexander Motin xpt_freeze_devq(ccb->ccb_h.path, 1); 938009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 939009ea47eSEdward Tomasz Napierala } 94073e2e95dSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP_ERR | CAM_DEV_QFRZN; 941009ea47eSEdward Tomasz Napierala goto out; 942009ea47eSEdward Tomasz Napierala } 943009ea47eSEdward Tomasz Napierala icl_pdu_get_data(response, 0, &sense_len, sizeof(sense_len)); 944009ea47eSEdward Tomasz Napierala sense_len = ntohs(sense_len); 945009ea47eSEdward Tomasz Napierala #if 0 946009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "sense_len %d, data len %zd", 947009ea47eSEdward Tomasz Napierala sense_len, data_segment_len); 948009ea47eSEdward Tomasz Napierala #endif 949009ea47eSEdward Tomasz Napierala if (sizeof(sense_len) + sense_len > data_segment_len) { 950009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "truncated data segment " 951009ea47eSEdward Tomasz Napierala "(%zd bytes, should be %zd)", 952009ea47eSEdward Tomasz Napierala data_segment_len, sizeof(sense_len) + sense_len); 95373e2e95dSAlexander Motin if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 95473e2e95dSAlexander Motin xpt_freeze_devq(ccb->ccb_h.path, 1); 955009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 956009ea47eSEdward Tomasz Napierala } 95773e2e95dSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP_ERR | CAM_DEV_QFRZN; 958009ea47eSEdward Tomasz Napierala goto out; 959009ea47eSEdward Tomasz Napierala } else if (sizeof(sense_len) + sense_len < data_segment_len) 960009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "oversize data segment " 961009ea47eSEdward Tomasz Napierala "(%zd bytes, should be %zd)", 962009ea47eSEdward Tomasz Napierala data_segment_len, sizeof(sense_len) + sense_len); 963009ea47eSEdward Tomasz Napierala if (sense_len > csio->sense_len) { 964009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "truncating sense from %d to %d", 965009ea47eSEdward Tomasz Napierala sense_len, csio->sense_len); 966009ea47eSEdward Tomasz Napierala sense_len = csio->sense_len; 967009ea47eSEdward Tomasz Napierala } 968009ea47eSEdward Tomasz Napierala icl_pdu_get_data(response, sizeof(sense_len), &csio->sense_data, sense_len); 969009ea47eSEdward Tomasz Napierala csio->sense_resid = csio->sense_len - sense_len; 97073e2e95dSAlexander Motin ccb->ccb_h.status |= CAM_AUTOSNS_VALID; 971009ea47eSEdward Tomasz Napierala } 972009ea47eSEdward Tomasz Napierala 973009ea47eSEdward Tomasz Napierala out: 974009ea47eSEdward Tomasz Napierala if (bhssr->bhssr_flags & BHSSR_FLAGS_RESIDUAL_UNDERFLOW) 975009ea47eSEdward Tomasz Napierala csio->resid = ntohl(bhssr->bhssr_residual_count); 976009ea47eSEdward Tomasz Napierala 977009ea47eSEdward Tomasz Napierala if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) { 97873e2e95dSAlexander Motin KASSERT(received <= csio->dxfer_len, 97973e2e95dSAlexander Motin ("received > csio->dxfer_len")); 98073e2e95dSAlexander Motin if (received < csio->dxfer_len) { 98173e2e95dSAlexander Motin if (csio->resid != csio->dxfer_len - received) { 982009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "underflow mismatch: " 983009ea47eSEdward Tomasz Napierala "target indicates %d, we calculated %zd", 98473e2e95dSAlexander Motin csio->resid, csio->dxfer_len - received); 985009ea47eSEdward Tomasz Napierala } 98673e2e95dSAlexander Motin csio->resid = csio->dxfer_len - received; 987009ea47eSEdward Tomasz Napierala } 988009ea47eSEdward Tomasz Napierala } 989009ea47eSEdward Tomasz Napierala 99073e2e95dSAlexander Motin xpt_done(ccb); 991009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 992009ea47eSEdward Tomasz Napierala } 993009ea47eSEdward Tomasz Napierala 994009ea47eSEdward Tomasz Napierala static void 995aa75114cSAlexander Motin iscsi_pdu_handle_task_response(struct icl_pdu *response) 996aa75114cSAlexander Motin { 997aa75114cSAlexander Motin struct iscsi_bhs_task_management_response *bhstmr; 998aa75114cSAlexander Motin struct iscsi_outstanding *io, *aio; 999aa75114cSAlexander Motin struct iscsi_session *is; 1000aa75114cSAlexander Motin 1001aa75114cSAlexander Motin is = PDU_SESSION(response); 1002aa75114cSAlexander Motin 1003aa75114cSAlexander Motin bhstmr = (struct iscsi_bhs_task_management_response *)response->ip_bhs; 1004aa75114cSAlexander Motin io = iscsi_outstanding_find(is, bhstmr->bhstmr_initiator_task_tag); 1005aa75114cSAlexander Motin if (io == NULL || io->io_ccb != NULL) { 1006aa75114cSAlexander Motin ISCSI_SESSION_WARN(is, "bad itt 0x%x", 1007aa75114cSAlexander Motin bhstmr->bhstmr_initiator_task_tag); 1008aa75114cSAlexander Motin icl_pdu_free(response); 1009aa75114cSAlexander Motin iscsi_session_reconnect(is); 1010aa75114cSAlexander Motin return; 1011aa75114cSAlexander Motin } 1012aa75114cSAlexander Motin 1013aa75114cSAlexander Motin if (bhstmr->bhstmr_response != BHSTMR_RESPONSE_FUNCTION_COMPLETE) { 1014aa75114cSAlexander Motin ISCSI_SESSION_WARN(is, "task response 0x%x", 1015aa75114cSAlexander Motin bhstmr->bhstmr_response); 1016aa75114cSAlexander Motin } else { 1017aa75114cSAlexander Motin aio = iscsi_outstanding_find(is, io->io_datasn); 1018aa75114cSAlexander Motin if (aio != NULL && aio->io_ccb != NULL) 1019aa75114cSAlexander Motin iscsi_session_terminate_task(is, aio, false); 1020aa75114cSAlexander Motin } 1021aa75114cSAlexander Motin 1022aa75114cSAlexander Motin iscsi_outstanding_remove(is, io); 1023aa75114cSAlexander Motin icl_pdu_free(response); 1024aa75114cSAlexander Motin } 1025aa75114cSAlexander Motin 1026aa75114cSAlexander Motin static void 1027009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_data_in(struct icl_pdu *response) 1028009ea47eSEdward Tomasz Napierala { 1029009ea47eSEdward Tomasz Napierala struct iscsi_bhs_data_in *bhsdi; 1030009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io; 1031009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 103273e2e95dSAlexander Motin union ccb *ccb; 1033009ea47eSEdward Tomasz Napierala struct ccb_scsiio *csio; 103473e2e95dSAlexander Motin size_t data_segment_len, received, oreceived; 1035009ea47eSEdward Tomasz Napierala 1036009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 1037009ea47eSEdward Tomasz Napierala bhsdi = (struct iscsi_bhs_data_in *)response->ip_bhs; 1038009ea47eSEdward Tomasz Napierala io = iscsi_outstanding_find(is, bhsdi->bhsdi_initiator_task_tag); 1039aa75114cSAlexander Motin if (io == NULL || io->io_ccb == NULL) { 1040009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "bad itt 0x%x", bhsdi->bhsdi_initiator_task_tag); 1041009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1042009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1043c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 1044009ea47eSEdward Tomasz Napierala return; 1045009ea47eSEdward Tomasz Napierala } 1046009ea47eSEdward Tomasz Napierala 1047009ea47eSEdward Tomasz Napierala data_segment_len = icl_pdu_data_segment_length(response); 1048009ea47eSEdward Tomasz Napierala if (data_segment_len == 0) { 1049009ea47eSEdward Tomasz Napierala /* 1050009ea47eSEdward Tomasz Napierala * "The sending of 0 length data segments should be avoided, 1051009ea47eSEdward Tomasz Napierala * but initiators and targets MUST be able to properly receive 1052009ea47eSEdward Tomasz Napierala * 0 length data segments." 1053009ea47eSEdward Tomasz Napierala */ 1054c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 1055009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1056009ea47eSEdward Tomasz Napierala return; 1057009ea47eSEdward Tomasz Napierala } 1058009ea47eSEdward Tomasz Napierala 1059009ea47eSEdward Tomasz Napierala /* 1060009ea47eSEdward Tomasz Napierala * We need to track this for security reasons - without it, malicious target 1061009ea47eSEdward Tomasz Napierala * could respond to SCSI READ without sending Data-In PDUs, which would result 1062009ea47eSEdward Tomasz Napierala * in read operation on the initiator side returning random kernel data. 1063009ea47eSEdward Tomasz Napierala */ 1064009ea47eSEdward Tomasz Napierala if (ntohl(bhsdi->bhsdi_buffer_offset) != io->io_received) { 1065009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "data out of order; expected offset %zd, got %zd", 1066009ea47eSEdward Tomasz Napierala io->io_received, (size_t)ntohl(bhsdi->bhsdi_buffer_offset)); 1067009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1068009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1069c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 1070009ea47eSEdward Tomasz Napierala return; 1071009ea47eSEdward Tomasz Napierala } 1072009ea47eSEdward Tomasz Napierala 107373e2e95dSAlexander Motin ccb = io->io_ccb; 107473e2e95dSAlexander Motin csio = &ccb->csio; 1075009ea47eSEdward Tomasz Napierala 1076d43c9ec1SEdward Tomasz Napierala if (io->io_received + data_segment_len > csio->dxfer_len) { 1077009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "oversize data segment (%zd bytes " 1078d43c9ec1SEdward Tomasz Napierala "at offset %zd, buffer is %d)", 1079d43c9ec1SEdward Tomasz Napierala data_segment_len, io->io_received, csio->dxfer_len); 1080009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1081009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1082c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 1083009ea47eSEdward Tomasz Napierala return; 1084009ea47eSEdward Tomasz Napierala } 1085009ea47eSEdward Tomasz Napierala 108673e2e95dSAlexander Motin oreceived = io->io_received; 1087009ea47eSEdward Tomasz Napierala io->io_received += data_segment_len; 108873e2e95dSAlexander Motin received = io->io_received; 1089c215ad3aSAlexander Motin if ((bhsdi->bhsdi_flags & BHSDI_FLAGS_S) != 0) 1090c215ad3aSAlexander Motin iscsi_outstanding_remove(is, io); 1091c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 1092c215ad3aSAlexander Motin 109373e2e95dSAlexander Motin icl_pdu_get_data(response, 0, csio->data_ptr + oreceived, data_segment_len); 1094009ea47eSEdward Tomasz Napierala 1095009ea47eSEdward Tomasz Napierala /* 1096009ea47eSEdward Tomasz Napierala * XXX: Check DataSN. 1097009ea47eSEdward Tomasz Napierala * XXX: Check F. 1098009ea47eSEdward Tomasz Napierala */ 109969647b7bSEdward Tomasz Napierala if ((bhsdi->bhsdi_flags & BHSDI_FLAGS_S) == 0) { 110069647b7bSEdward Tomasz Napierala /* 110169647b7bSEdward Tomasz Napierala * Nothing more to do. 110269647b7bSEdward Tomasz Napierala */ 110369647b7bSEdward Tomasz Napierala icl_pdu_free(response); 110469647b7bSEdward Tomasz Napierala return; 110569647b7bSEdward Tomasz Napierala } 110669647b7bSEdward Tomasz Napierala 1107009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "got S flag; status 0x%x", bhsdi->bhsdi_status); 1108009ea47eSEdward Tomasz Napierala if (bhsdi->bhsdi_status == 0) { 110973e2e95dSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP; 1110009ea47eSEdward Tomasz Napierala } else { 111173e2e95dSAlexander Motin if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 111273e2e95dSAlexander Motin xpt_freeze_devq(ccb->ccb_h.path, 1); 1113009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 1114009ea47eSEdward Tomasz Napierala } 111573e2e95dSAlexander Motin ccb->ccb_h.status = CAM_SCSI_STATUS_ERROR | CAM_DEV_QFRZN; 1116009ea47eSEdward Tomasz Napierala csio->scsi_status = bhsdi->bhsdi_status; 1117009ea47eSEdward Tomasz Napierala } 111869647b7bSEdward Tomasz Napierala 111969647b7bSEdward Tomasz Napierala if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) { 112073e2e95dSAlexander Motin KASSERT(received <= csio->dxfer_len, 112173e2e95dSAlexander Motin ("received > csio->dxfer_len")); 112273e2e95dSAlexander Motin if (received < csio->dxfer_len) { 112369647b7bSEdward Tomasz Napierala csio->resid = ntohl(bhsdi->bhsdi_residual_count); 112473e2e95dSAlexander Motin if (csio->resid != csio->dxfer_len - received) { 112569647b7bSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "underflow mismatch: " 112669647b7bSEdward Tomasz Napierala "target indicates %d, we calculated %zd", 112773e2e95dSAlexander Motin csio->resid, csio->dxfer_len - received); 112869647b7bSEdward Tomasz Napierala } 112973e2e95dSAlexander Motin csio->resid = csio->dxfer_len - received; 113069647b7bSEdward Tomasz Napierala } 1131009ea47eSEdward Tomasz Napierala } 1132009ea47eSEdward Tomasz Napierala 113373e2e95dSAlexander Motin xpt_done(ccb); 1134009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1135009ea47eSEdward Tomasz Napierala } 1136009ea47eSEdward Tomasz Napierala 1137009ea47eSEdward Tomasz Napierala static void 1138009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_logout_response(struct icl_pdu *response) 1139009ea47eSEdward Tomasz Napierala { 1140009ea47eSEdward Tomasz Napierala 1141009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(PDU_SESSION(response), "logout response"); 1142009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1143009ea47eSEdward Tomasz Napierala } 1144009ea47eSEdward Tomasz Napierala 1145009ea47eSEdward Tomasz Napierala static void 1146009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_r2t(struct icl_pdu *response) 1147009ea47eSEdward Tomasz Napierala { 1148009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 1149009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1150009ea47eSEdward Tomasz Napierala struct iscsi_bhs_r2t *bhsr2t; 1151009ea47eSEdward Tomasz Napierala struct iscsi_bhs_data_out *bhsdo; 1152009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io; 1153009ea47eSEdward Tomasz Napierala struct ccb_scsiio *csio; 1154009ea47eSEdward Tomasz Napierala size_t off, len, total_len; 1155009ea47eSEdward Tomasz Napierala int error; 1156009ea47eSEdward Tomasz Napierala 1157009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 1158009ea47eSEdward Tomasz Napierala 1159009ea47eSEdward Tomasz Napierala bhsr2t = (struct iscsi_bhs_r2t *)response->ip_bhs; 1160009ea47eSEdward Tomasz Napierala io = iscsi_outstanding_find(is, bhsr2t->bhsr2t_initiator_task_tag); 1161aa75114cSAlexander Motin if (io == NULL || io->io_ccb == NULL) { 1162009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "bad itt 0x%x; reconnecting", 1163009ea47eSEdward Tomasz Napierala bhsr2t->bhsr2t_initiator_task_tag); 1164009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1165009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1166009ea47eSEdward Tomasz Napierala return; 1167009ea47eSEdward Tomasz Napierala } 1168009ea47eSEdward Tomasz Napierala 1169009ea47eSEdward Tomasz Napierala csio = &io->io_ccb->csio; 1170009ea47eSEdward Tomasz Napierala 1171009ea47eSEdward Tomasz Napierala if ((csio->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_OUT) { 1172009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "received R2T for read command; reconnecting"); 1173009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1174009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1175009ea47eSEdward Tomasz Napierala return; 1176009ea47eSEdward Tomasz Napierala } 1177009ea47eSEdward Tomasz Napierala 1178009ea47eSEdward Tomasz Napierala /* 1179009ea47eSEdward Tomasz Napierala * XXX: Verify R2TSN. 1180009ea47eSEdward Tomasz Napierala */ 1181009ea47eSEdward Tomasz Napierala 1182009ea47eSEdward Tomasz Napierala io->io_datasn = 0; 1183d43c9ec1SEdward Tomasz Napierala 1184009ea47eSEdward Tomasz Napierala off = ntohl(bhsr2t->bhsr2t_buffer_offset); 1185d43c9ec1SEdward Tomasz Napierala if (off > csio->dxfer_len) { 1186d43c9ec1SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target requested invalid offset " 1187d43c9ec1SEdward Tomasz Napierala "%zd, buffer is is %d; reconnecting", off, csio->dxfer_len); 1188d43c9ec1SEdward Tomasz Napierala icl_pdu_free(response); 1189d43c9ec1SEdward Tomasz Napierala iscsi_session_reconnect(is); 1190d43c9ec1SEdward Tomasz Napierala return; 1191d43c9ec1SEdward Tomasz Napierala } 1192d43c9ec1SEdward Tomasz Napierala 1193009ea47eSEdward Tomasz Napierala total_len = ntohl(bhsr2t->bhsr2t_desired_data_transfer_length); 1194d43c9ec1SEdward Tomasz Napierala if (total_len == 0 || total_len > csio->dxfer_len) { 1195d43c9ec1SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target requested invalid length " 1196d43c9ec1SEdward Tomasz Napierala "%zd, buffer is %d; reconnecting", total_len, csio->dxfer_len); 1197d43c9ec1SEdward Tomasz Napierala icl_pdu_free(response); 1198d43c9ec1SEdward Tomasz Napierala iscsi_session_reconnect(is); 1199d43c9ec1SEdward Tomasz Napierala return; 1200d43c9ec1SEdward Tomasz Napierala } 1201009ea47eSEdward Tomasz Napierala 1202009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "r2t; off %zd, len %zd", off, total_len); 1203009ea47eSEdward Tomasz Napierala 1204009ea47eSEdward Tomasz Napierala for (;;) { 1205009ea47eSEdward Tomasz Napierala len = total_len; 1206009ea47eSEdward Tomasz Napierala 1207009ea47eSEdward Tomasz Napierala if (len > is->is_max_data_segment_length) 1208009ea47eSEdward Tomasz Napierala len = is->is_max_data_segment_length; 1209009ea47eSEdward Tomasz Napierala 1210009ea47eSEdward Tomasz Napierala if (off + len > csio->dxfer_len) { 1211d43c9ec1SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target requested invalid " 1212d43c9ec1SEdward Tomasz Napierala "length/offset %zd, buffer is %d; reconnecting", 1213009ea47eSEdward Tomasz Napierala off + len, csio->dxfer_len); 1214009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1215009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1216009ea47eSEdward Tomasz Napierala return; 1217009ea47eSEdward Tomasz Napierala } 1218009ea47eSEdward Tomasz Napierala 1219d2d52b00SEdward Tomasz Napierala request = icl_pdu_new(response->ip_conn, M_NOWAIT); 1220009ea47eSEdward Tomasz Napierala if (request == NULL) { 1221009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1222009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1223009ea47eSEdward Tomasz Napierala return; 1224009ea47eSEdward Tomasz Napierala } 1225009ea47eSEdward Tomasz Napierala 1226009ea47eSEdward Tomasz Napierala bhsdo = (struct iscsi_bhs_data_out *)request->ip_bhs; 1227009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_opcode = ISCSI_BHS_OPCODE_SCSI_DATA_OUT; 1228009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_lun = bhsr2t->bhsr2t_lun; 1229009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_initiator_task_tag = 1230009ea47eSEdward Tomasz Napierala bhsr2t->bhsr2t_initiator_task_tag; 1231009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_target_transfer_tag = 1232009ea47eSEdward Tomasz Napierala bhsr2t->bhsr2t_target_transfer_tag; 1233009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_datasn = htonl(io->io_datasn++); 1234009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_buffer_offset = htonl(off); 1235d43c9ec1SEdward Tomasz Napierala error = icl_pdu_append_data(request, csio->data_ptr + off, len, 1236d43c9ec1SEdward Tomasz Napierala M_NOWAIT); 1237009ea47eSEdward Tomasz Napierala if (error != 0) { 1238d43c9ec1SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate memory; " 1239d43c9ec1SEdward Tomasz Napierala "reconnecting"); 1240009ea47eSEdward Tomasz Napierala icl_pdu_free(request); 1241009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1242009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1243009ea47eSEdward Tomasz Napierala return; 1244009ea47eSEdward Tomasz Napierala } 1245009ea47eSEdward Tomasz Napierala 1246009ea47eSEdward Tomasz Napierala off += len; 1247009ea47eSEdward Tomasz Napierala total_len -= len; 1248009ea47eSEdward Tomasz Napierala 1249009ea47eSEdward Tomasz Napierala if (total_len == 0) { 1250009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_flags |= BHSDO_FLAGS_F; 1251009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "setting F, off %zd", off); 1252009ea47eSEdward Tomasz Napierala } else { 1253009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "not finished, off %zd", off); 1254009ea47eSEdward Tomasz Napierala } 1255009ea47eSEdward Tomasz Napierala 1256009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(request); 1257009ea47eSEdward Tomasz Napierala 1258009ea47eSEdward Tomasz Napierala if (total_len == 0) 1259009ea47eSEdward Tomasz Napierala break; 1260009ea47eSEdward Tomasz Napierala } 1261009ea47eSEdward Tomasz Napierala 1262009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1263009ea47eSEdward Tomasz Napierala } 1264009ea47eSEdward Tomasz Napierala 1265009ea47eSEdward Tomasz Napierala static void 1266009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_async_message(struct icl_pdu *response) 1267009ea47eSEdward Tomasz Napierala { 1268009ea47eSEdward Tomasz Napierala struct iscsi_bhs_asynchronous_message *bhsam; 1269009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1270009ea47eSEdward Tomasz Napierala 1271009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 1272009ea47eSEdward Tomasz Napierala bhsam = (struct iscsi_bhs_asynchronous_message *)response->ip_bhs; 1273009ea47eSEdward Tomasz Napierala switch (bhsam->bhsam_async_event) { 1274009ea47eSEdward Tomasz Napierala case BHSAM_EVENT_TARGET_REQUESTS_LOGOUT: 1275009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target requests logout; removing session"); 1276009ea47eSEdward Tomasz Napierala iscsi_session_logout(is); 1277009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1278009ea47eSEdward Tomasz Napierala break; 1279009ea47eSEdward Tomasz Napierala case BHSAM_EVENT_TARGET_TERMINATES_CONNECTION: 1280009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target indicates it will drop drop the connection"); 1281009ea47eSEdward Tomasz Napierala break; 1282009ea47eSEdward Tomasz Napierala case BHSAM_EVENT_TARGET_TERMINATES_SESSION: 1283009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target indicates it will drop drop the session"); 1284009ea47eSEdward Tomasz Napierala break; 1285009ea47eSEdward Tomasz Napierala default: 1286009ea47eSEdward Tomasz Napierala /* 1287009ea47eSEdward Tomasz Napierala * XXX: Technically, we're obligated to also handle 1288009ea47eSEdward Tomasz Napierala * parameter renegotiation. 1289009ea47eSEdward Tomasz Napierala */ 1290009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "ignoring AsyncEvent %d", bhsam->bhsam_async_event); 1291009ea47eSEdward Tomasz Napierala break; 1292009ea47eSEdward Tomasz Napierala } 1293009ea47eSEdward Tomasz Napierala 1294009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1295009ea47eSEdward Tomasz Napierala } 1296009ea47eSEdward Tomasz Napierala 1297009ea47eSEdward Tomasz Napierala static void 1298009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_reject(struct icl_pdu *response) 1299009ea47eSEdward Tomasz Napierala { 1300009ea47eSEdward Tomasz Napierala struct iscsi_bhs_reject *bhsr; 1301009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1302009ea47eSEdward Tomasz Napierala 1303009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 1304009ea47eSEdward Tomasz Napierala bhsr = (struct iscsi_bhs_reject *)response->ip_bhs; 1305009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "received Reject PDU, reason 0x%x; protocol error?", 1306009ea47eSEdward Tomasz Napierala bhsr->bhsr_reason); 1307009ea47eSEdward Tomasz Napierala 1308009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1309009ea47eSEdward Tomasz Napierala } 1310009ea47eSEdward Tomasz Napierala 1311009ea47eSEdward Tomasz Napierala static int 1312009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_wait(struct iscsi_softc *sc, 1313009ea47eSEdward Tomasz Napierala struct iscsi_daemon_request *request) 1314009ea47eSEdward Tomasz Napierala { 1315009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1316009ea47eSEdward Tomasz Napierala int error; 1317009ea47eSEdward Tomasz Napierala 1318009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1319009ea47eSEdward Tomasz Napierala for (;;) { 1320009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 13212be596adSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1322ba165a31SEdward Tomasz Napierala if (is->is_conf.isc_enable == 0 && 1323ba165a31SEdward Tomasz Napierala is->is_conf.isc_discovery == 0) { 1324ba165a31SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1325ba165a31SEdward Tomasz Napierala continue; 1326ba165a31SEdward Tomasz Napierala } 1327009ea47eSEdward Tomasz Napierala if (is->is_waiting_for_iscsid) 1328009ea47eSEdward Tomasz Napierala break; 13292be596adSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1330009ea47eSEdward Tomasz Napierala } 1331009ea47eSEdward Tomasz Napierala 1332009ea47eSEdward Tomasz Napierala if (is == NULL) { 1333009ea47eSEdward Tomasz Napierala /* 1334009ea47eSEdward Tomasz Napierala * No session requires attention from iscsid(8); wait. 1335009ea47eSEdward Tomasz Napierala */ 1336009ea47eSEdward Tomasz Napierala error = cv_wait_sig(&sc->sc_cv, &sc->sc_lock); 1337009ea47eSEdward Tomasz Napierala if (error != 0) { 1338009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1339009ea47eSEdward Tomasz Napierala return (error); 1340009ea47eSEdward Tomasz Napierala } 1341009ea47eSEdward Tomasz Napierala continue; 1342009ea47eSEdward Tomasz Napierala } 1343009ea47eSEdward Tomasz Napierala 1344009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = false; 1345009ea47eSEdward Tomasz Napierala is->is_login_phase = true; 1346009ea47eSEdward Tomasz Napierala is->is_reason[0] = '\0'; 1347009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1348009ea47eSEdward Tomasz Napierala 1349009ea47eSEdward Tomasz Napierala request->idr_session_id = is->is_id; 1350ffe82e05SAlexander Motin memcpy(&request->idr_isid, &is->is_isid, 1351ffe82e05SAlexander Motin sizeof(request->idr_isid)); 1352ffe82e05SAlexander Motin request->idr_tsih = 0; /* New or reinstated session. */ 1353009ea47eSEdward Tomasz Napierala memcpy(&request->idr_conf, &is->is_conf, 1354009ea47eSEdward Tomasz Napierala sizeof(request->idr_conf)); 1355009ea47eSEdward Tomasz Napierala 135682babffbSEdward Tomasz Napierala error = icl_limits(is->is_conf.isc_offload, 1357b8911594SEdward Tomasz Napierala is->is_conf.isc_iser, 135882babffbSEdward Tomasz Napierala &request->idr_limits.isl_max_data_segment_length); 135982babffbSEdward Tomasz Napierala if (error != 0) { 136082babffbSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "icl_limits for offload \"%s\" " 136182babffbSEdward Tomasz Napierala "failed with error %d", is->is_conf.isc_offload, 136282babffbSEdward Tomasz Napierala error); 136382babffbSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 136482babffbSEdward Tomasz Napierala return (error); 136582babffbSEdward Tomasz Napierala } 136682babffbSEdward Tomasz Napierala 1367009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1368009ea47eSEdward Tomasz Napierala return (0); 1369009ea47eSEdward Tomasz Napierala } 1370009ea47eSEdward Tomasz Napierala } 1371009ea47eSEdward Tomasz Napierala 1372009ea47eSEdward Tomasz Napierala static int 1373009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_handoff(struct iscsi_softc *sc, 1374009ea47eSEdward Tomasz Napierala struct iscsi_daemon_handoff *handoff) 1375009ea47eSEdward Tomasz Napierala { 1376009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1377f5cadbc4SNavdeep Parhar struct icl_conn *ic; 1378009ea47eSEdward Tomasz Napierala int error; 1379009ea47eSEdward Tomasz Napierala 1380009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1381009ea47eSEdward Tomasz Napierala 1382009ea47eSEdward Tomasz Napierala /* 1383009ea47eSEdward Tomasz Napierala * Find the session to hand off socket to. 1384009ea47eSEdward Tomasz Napierala */ 1385009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1386009ea47eSEdward Tomasz Napierala if (is->is_id == handoff->idh_session_id) 1387009ea47eSEdward Tomasz Napierala break; 1388009ea47eSEdward Tomasz Napierala } 1389009ea47eSEdward Tomasz Napierala if (is == NULL) { 1390009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1391009ea47eSEdward Tomasz Napierala return (ESRCH); 1392009ea47eSEdward Tomasz Napierala } 1393009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1394f5cadbc4SNavdeep Parhar ic = is->is_conn; 1395009ea47eSEdward Tomasz Napierala if (is->is_conf.isc_discovery || is->is_terminating) { 1396009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1397009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1398009ea47eSEdward Tomasz Napierala return (EINVAL); 1399009ea47eSEdward Tomasz Napierala } 14000260023fSEdward Tomasz Napierala if (is->is_connected) { 14010260023fSEdward Tomasz Napierala /* 14020260023fSEdward Tomasz Napierala * This might have happened because another iscsid(8) 14030260023fSEdward Tomasz Napierala * instance handed off the connection in the meantime. 14040260023fSEdward Tomasz Napierala * Just return. 14050260023fSEdward Tomasz Napierala */ 14060260023fSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "handoff on already connected " 14070260023fSEdward Tomasz Napierala "session"); 14080260023fSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 14090260023fSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 14100260023fSEdward Tomasz Napierala return (EBUSY); 14110260023fSEdward Tomasz Napierala } 1412009ea47eSEdward Tomasz Napierala 1413009ea47eSEdward Tomasz Napierala strlcpy(is->is_target_alias, handoff->idh_target_alias, 1414009ea47eSEdward Tomasz Napierala sizeof(is->is_target_alias)); 1415ffe82e05SAlexander Motin is->is_tsih = handoff->idh_tsih; 1416009ea47eSEdward Tomasz Napierala is->is_statsn = handoff->idh_statsn; 1417009ea47eSEdward Tomasz Napierala is->is_initial_r2t = handoff->idh_initial_r2t; 1418009ea47eSEdward Tomasz Napierala is->is_immediate_data = handoff->idh_immediate_data; 1419c8b73c2cSNavdeep Parhar 1420c8b73c2cSNavdeep Parhar /* 1421c8b73c2cSNavdeep Parhar * Cap MaxRecvDataSegmentLength obtained from the target to the maximum 1422c8b73c2cSNavdeep Parhar * size supported by our ICL module. 1423c8b73c2cSNavdeep Parhar */ 14247ceec7e4SNavdeep Parhar is->is_max_data_segment_length = min(ic->ic_max_data_segment_length, 14257ceec7e4SNavdeep Parhar handoff->idh_max_data_segment_length); 1426009ea47eSEdward Tomasz Napierala is->is_max_burst_length = handoff->idh_max_burst_length; 1427009ea47eSEdward Tomasz Napierala is->is_first_burst_length = handoff->idh_first_burst_length; 1428009ea47eSEdward Tomasz Napierala 1429009ea47eSEdward Tomasz Napierala if (handoff->idh_header_digest == ISCSI_DIGEST_CRC32C) 1430f5cadbc4SNavdeep Parhar ic->ic_header_crc32c = true; 1431009ea47eSEdward Tomasz Napierala else 1432f5cadbc4SNavdeep Parhar ic->ic_header_crc32c = false; 1433009ea47eSEdward Tomasz Napierala if (handoff->idh_data_digest == ISCSI_DIGEST_CRC32C) 1434f5cadbc4SNavdeep Parhar ic->ic_data_crc32c = true; 1435009ea47eSEdward Tomasz Napierala else 1436f5cadbc4SNavdeep Parhar ic->ic_data_crc32c = false; 1437b218ca6fSEdward Tomasz Napierala ic->ic_maxtags = maxtags; 1438009ea47eSEdward Tomasz Napierala 1439009ea47eSEdward Tomasz Napierala is->is_cmdsn = 0; 1440cf23c509SEdward Tomasz Napierala is->is_expcmdsn = 0; 1441cf23c509SEdward Tomasz Napierala is->is_maxcmdsn = 0; 1442009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = false; 1443009ea47eSEdward Tomasz Napierala is->is_login_phase = false; 1444009ea47eSEdward Tomasz Napierala is->is_timeout = 0; 1445009ea47eSEdward Tomasz Napierala is->is_connected = true; 1446009ea47eSEdward Tomasz Napierala is->is_reason[0] = '\0'; 1447009ea47eSEdward Tomasz Napierala 1448009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1449009ea47eSEdward Tomasz Napierala 145057a4f20bSEdward Tomasz Napierala /* 1451906a424bSEdward Tomasz Napierala * If we're going through the proxy, the idh_socket will be 0, 1452906a424bSEdward Tomasz Napierala * and the ICL module can simply ignore this call. It can also 1453906a424bSEdward Tomasz Napierala * use it to determine it's no longer in the Login phase. 145457a4f20bSEdward Tomasz Napierala */ 1455f5cadbc4SNavdeep Parhar error = icl_conn_handoff(ic, handoff->idh_socket); 1456009ea47eSEdward Tomasz Napierala if (error != 0) { 1457009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1458009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1459009ea47eSEdward Tomasz Napierala return (error); 1460009ea47eSEdward Tomasz Napierala } 1461009ea47eSEdward Tomasz Napierala 1462009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1463009ea47eSEdward Tomasz Napierala 1464009ea47eSEdward Tomasz Napierala if (is->is_sim != NULL) { 1465009ea47eSEdward Tomasz Napierala /* 1466009ea47eSEdward Tomasz Napierala * When reconnecting, there already is SIM allocated for the session. 1467009ea47eSEdward Tomasz Napierala */ 1468009ea47eSEdward Tomasz Napierala KASSERT(is->is_simq_frozen, ("reconnect without frozen simq")); 1469009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1470009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "releasing"); 1471009ea47eSEdward Tomasz Napierala xpt_release_simq(is->is_sim, 1); 1472009ea47eSEdward Tomasz Napierala is->is_simq_frozen = false; 1473009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1474009ea47eSEdward Tomasz Napierala 1475009ea47eSEdward Tomasz Napierala } else { 1476009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1477b218ca6fSEdward Tomasz Napierala is->is_devq = cam_simq_alloc(ic->ic_maxtags); 1478009ea47eSEdward Tomasz Napierala if (is->is_devq == NULL) { 1479009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate simq"); 1480009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1481009ea47eSEdward Tomasz Napierala return (ENOMEM); 1482009ea47eSEdward Tomasz Napierala } 1483009ea47eSEdward Tomasz Napierala 1484009ea47eSEdward Tomasz Napierala is->is_sim = cam_sim_alloc(iscsi_action, iscsi_poll, "iscsi", 1485009ea47eSEdward Tomasz Napierala is, is->is_id /* unit */, &is->is_lock, 1486b218ca6fSEdward Tomasz Napierala 1, ic->ic_maxtags, is->is_devq); 1487009ea47eSEdward Tomasz Napierala if (is->is_sim == NULL) { 1488009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1489009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate SIM"); 1490009ea47eSEdward Tomasz Napierala cam_simq_free(is->is_devq); 1491009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1492009ea47eSEdward Tomasz Napierala return (ENOMEM); 1493009ea47eSEdward Tomasz Napierala } 1494009ea47eSEdward Tomasz Napierala 1495009ea47eSEdward Tomasz Napierala error = xpt_bus_register(is->is_sim, NULL, 0); 1496009ea47eSEdward Tomasz Napierala if (error != 0) { 1497009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1498009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to register bus"); 1499009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1500009ea47eSEdward Tomasz Napierala return (ENOMEM); 1501009ea47eSEdward Tomasz Napierala } 1502009ea47eSEdward Tomasz Napierala 1503009ea47eSEdward Tomasz Napierala error = xpt_create_path(&is->is_path, /*periph*/NULL, 1504009ea47eSEdward Tomasz Napierala cam_sim_path(is->is_sim), CAM_TARGET_WILDCARD, 1505009ea47eSEdward Tomasz Napierala CAM_LUN_WILDCARD); 1506009ea47eSEdward Tomasz Napierala if (error != CAM_REQ_CMP) { 1507009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1508009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to create path"); 1509009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1510009ea47eSEdward Tomasz Napierala return (ENOMEM); 1511009ea47eSEdward Tomasz Napierala } 1512009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1513009ea47eSEdward Tomasz Napierala } 1514009ea47eSEdward Tomasz Napierala 1515009ea47eSEdward Tomasz Napierala return (0); 1516009ea47eSEdward Tomasz Napierala } 1517009ea47eSEdward Tomasz Napierala 1518009ea47eSEdward Tomasz Napierala static int 1519009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_fail(struct iscsi_softc *sc, 1520009ea47eSEdward Tomasz Napierala struct iscsi_daemon_fail *fail) 1521009ea47eSEdward Tomasz Napierala { 1522009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1523009ea47eSEdward Tomasz Napierala 1524009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1525009ea47eSEdward Tomasz Napierala 1526009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1527009ea47eSEdward Tomasz Napierala if (is->is_id == fail->idf_session_id) 1528009ea47eSEdward Tomasz Napierala break; 1529009ea47eSEdward Tomasz Napierala } 1530009ea47eSEdward Tomasz Napierala if (is == NULL) { 1531009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1532009ea47eSEdward Tomasz Napierala return (ESRCH); 1533009ea47eSEdward Tomasz Napierala } 1534009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1535009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "iscsid(8) failed: %s", 1536009ea47eSEdward Tomasz Napierala fail->idf_reason); 1537009ea47eSEdward Tomasz Napierala strlcpy(is->is_reason, fail->idf_reason, sizeof(is->is_reason)); 1538009ea47eSEdward Tomasz Napierala //is->is_waiting_for_iscsid = false; 1539009ea47eSEdward Tomasz Napierala //is->is_login_phase = true; 1540009ea47eSEdward Tomasz Napierala //iscsi_session_reconnect(is); 1541009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1542009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1543009ea47eSEdward Tomasz Napierala 1544009ea47eSEdward Tomasz Napierala return (0); 1545009ea47eSEdward Tomasz Napierala } 1546009ea47eSEdward Tomasz Napierala 1547009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 1548009ea47eSEdward Tomasz Napierala static int 1549009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_connect(struct iscsi_softc *sc, 1550009ea47eSEdward Tomasz Napierala struct iscsi_daemon_connect *idc) 1551009ea47eSEdward Tomasz Napierala { 1552009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1553009ea47eSEdward Tomasz Napierala struct sockaddr *from_sa, *to_sa; 1554009ea47eSEdward Tomasz Napierala int error; 1555009ea47eSEdward Tomasz Napierala 1556009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1557009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1558009ea47eSEdward Tomasz Napierala if (is->is_id == idc->idc_session_id) 1559009ea47eSEdward Tomasz Napierala break; 1560009ea47eSEdward Tomasz Napierala } 1561009ea47eSEdward Tomasz Napierala if (is == NULL) { 1562009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1563009ea47eSEdward Tomasz Napierala return (ESRCH); 1564009ea47eSEdward Tomasz Napierala } 1565009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1566009ea47eSEdward Tomasz Napierala 1567009ea47eSEdward Tomasz Napierala if (idc->idc_from_addrlen > 0) { 1568009ea47eSEdward Tomasz Napierala error = getsockaddr(&from_sa, (void *)idc->idc_from_addr, idc->idc_from_addrlen); 156957a4f20bSEdward Tomasz Napierala if (error != 0) { 157057a4f20bSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, 157157a4f20bSEdward Tomasz Napierala "getsockaddr failed with error %d", error); 1572009ea47eSEdward Tomasz Napierala return (error); 157357a4f20bSEdward Tomasz Napierala } 1574009ea47eSEdward Tomasz Napierala } else { 1575009ea47eSEdward Tomasz Napierala from_sa = NULL; 1576009ea47eSEdward Tomasz Napierala } 1577009ea47eSEdward Tomasz Napierala error = getsockaddr(&to_sa, (void *)idc->idc_to_addr, idc->idc_to_addrlen); 1578009ea47eSEdward Tomasz Napierala if (error != 0) { 157957a4f20bSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "getsockaddr failed with error %d", 158057a4f20bSEdward Tomasz Napierala error); 1581009ea47eSEdward Tomasz Napierala free(from_sa, M_SONAME); 1582009ea47eSEdward Tomasz Napierala return (error); 1583009ea47eSEdward Tomasz Napierala } 1584009ea47eSEdward Tomasz Napierala 1585009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1586a3fd63f2SEdward Tomasz Napierala is->is_statsn = 0; 1587a3fd63f2SEdward Tomasz Napierala is->is_cmdsn = 0; 1588a3fd63f2SEdward Tomasz Napierala is->is_expcmdsn = 0; 1589a3fd63f2SEdward Tomasz Napierala is->is_maxcmdsn = 0; 1590009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = false; 1591009ea47eSEdward Tomasz Napierala is->is_login_phase = true; 1592009ea47eSEdward Tomasz Napierala is->is_timeout = 0; 1593009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1594009ea47eSEdward Tomasz Napierala 1595f41492b0SEdward Tomasz Napierala error = icl_conn_connect(is->is_conn, idc->idc_domain, 1596009ea47eSEdward Tomasz Napierala idc->idc_socktype, idc->idc_protocol, from_sa, to_sa); 1597009ea47eSEdward Tomasz Napierala free(from_sa, M_SONAME); 1598009ea47eSEdward Tomasz Napierala free(to_sa, M_SONAME); 1599009ea47eSEdward Tomasz Napierala 1600009ea47eSEdward Tomasz Napierala /* 1601009ea47eSEdward Tomasz Napierala * Digests are always disabled during login phase. 1602009ea47eSEdward Tomasz Napierala */ 1603009ea47eSEdward Tomasz Napierala is->is_conn->ic_header_crc32c = false; 1604009ea47eSEdward Tomasz Napierala is->is_conn->ic_data_crc32c = false; 1605009ea47eSEdward Tomasz Napierala 1606009ea47eSEdward Tomasz Napierala return (error); 1607009ea47eSEdward Tomasz Napierala } 1608009ea47eSEdward Tomasz Napierala 1609009ea47eSEdward Tomasz Napierala static int 1610009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_send(struct iscsi_softc *sc, 1611009ea47eSEdward Tomasz Napierala struct iscsi_daemon_send *ids) 1612009ea47eSEdward Tomasz Napierala { 1613009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1614009ea47eSEdward Tomasz Napierala struct icl_pdu *ip; 1615009ea47eSEdward Tomasz Napierala size_t datalen; 1616009ea47eSEdward Tomasz Napierala void *data; 1617009ea47eSEdward Tomasz Napierala int error; 1618009ea47eSEdward Tomasz Napierala 1619009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1620009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1621009ea47eSEdward Tomasz Napierala if (is->is_id == ids->ids_session_id) 1622009ea47eSEdward Tomasz Napierala break; 1623009ea47eSEdward Tomasz Napierala } 1624009ea47eSEdward Tomasz Napierala if (is == NULL) { 1625009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1626009ea47eSEdward Tomasz Napierala return (ESRCH); 1627009ea47eSEdward Tomasz Napierala } 1628009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1629009ea47eSEdward Tomasz Napierala 1630009ea47eSEdward Tomasz Napierala if (is->is_login_phase == false) 1631009ea47eSEdward Tomasz Napierala return (EBUSY); 1632009ea47eSEdward Tomasz Napierala 1633009ea47eSEdward Tomasz Napierala if (is->is_terminating || is->is_reconnecting) 1634009ea47eSEdward Tomasz Napierala return (EIO); 1635009ea47eSEdward Tomasz Napierala 1636009ea47eSEdward Tomasz Napierala datalen = ids->ids_data_segment_len; 1637009ea47eSEdward Tomasz Napierala if (datalen > ISCSI_MAX_DATA_SEGMENT_LENGTH) 1638009ea47eSEdward Tomasz Napierala return (EINVAL); 1639009ea47eSEdward Tomasz Napierala if (datalen > 0) { 1640009ea47eSEdward Tomasz Napierala data = malloc(datalen, M_ISCSI, M_WAITOK); 1641009ea47eSEdward Tomasz Napierala error = copyin(ids->ids_data_segment, data, datalen); 1642009ea47eSEdward Tomasz Napierala if (error != 0) { 1643009ea47eSEdward Tomasz Napierala free(data, M_ISCSI); 1644009ea47eSEdward Tomasz Napierala return (error); 1645009ea47eSEdward Tomasz Napierala } 1646009ea47eSEdward Tomasz Napierala } 1647009ea47eSEdward Tomasz Napierala 1648d2d52b00SEdward Tomasz Napierala ip = icl_pdu_new(is->is_conn, M_WAITOK); 1649009ea47eSEdward Tomasz Napierala memcpy(ip->ip_bhs, ids->ids_bhs, sizeof(*ip->ip_bhs)); 1650009ea47eSEdward Tomasz Napierala if (datalen > 0) { 1651009ea47eSEdward Tomasz Napierala error = icl_pdu_append_data(ip, data, datalen, M_WAITOK); 1652009ea47eSEdward Tomasz Napierala KASSERT(error == 0, ("icl_pdu_append_data(..., M_WAITOK) failed")); 1653009ea47eSEdward Tomasz Napierala free(data, M_ISCSI); 1654009ea47eSEdward Tomasz Napierala } 1655d66a906bSEdward Tomasz Napierala iscsi_pdu_queue(ip); 1656009ea47eSEdward Tomasz Napierala 1657009ea47eSEdward Tomasz Napierala return (0); 1658009ea47eSEdward Tomasz Napierala } 1659009ea47eSEdward Tomasz Napierala 1660009ea47eSEdward Tomasz Napierala static int 1661009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_receive(struct iscsi_softc *sc, 1662009ea47eSEdward Tomasz Napierala struct iscsi_daemon_receive *idr) 1663009ea47eSEdward Tomasz Napierala { 1664009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1665009ea47eSEdward Tomasz Napierala struct icl_pdu *ip; 1666009ea47eSEdward Tomasz Napierala void *data; 16672f0586b2SEdward Tomasz Napierala int error; 1668009ea47eSEdward Tomasz Napierala 1669009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1670009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1671009ea47eSEdward Tomasz Napierala if (is->is_id == idr->idr_session_id) 1672009ea47eSEdward Tomasz Napierala break; 1673009ea47eSEdward Tomasz Napierala } 1674009ea47eSEdward Tomasz Napierala if (is == NULL) { 1675009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1676009ea47eSEdward Tomasz Napierala return (ESRCH); 1677009ea47eSEdward Tomasz Napierala } 1678009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1679009ea47eSEdward Tomasz Napierala 1680009ea47eSEdward Tomasz Napierala if (is->is_login_phase == false) 1681009ea47eSEdward Tomasz Napierala return (EBUSY); 1682009ea47eSEdward Tomasz Napierala 1683009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1684009ea47eSEdward Tomasz Napierala while (is->is_login_pdu == NULL && 1685009ea47eSEdward Tomasz Napierala is->is_terminating == false && 16862f0586b2SEdward Tomasz Napierala is->is_reconnecting == false) { 16872f0586b2SEdward Tomasz Napierala error = cv_wait_sig(&is->is_login_cv, &is->is_lock); 16882f0586b2SEdward Tomasz Napierala if (error != 0) { 16892f0586b2SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 16902f0586b2SEdward Tomasz Napierala return (error); 16912f0586b2SEdward Tomasz Napierala } 16922f0586b2SEdward Tomasz Napierala } 1693009ea47eSEdward Tomasz Napierala if (is->is_terminating || is->is_reconnecting) { 1694009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1695009ea47eSEdward Tomasz Napierala return (EIO); 1696009ea47eSEdward Tomasz Napierala } 1697009ea47eSEdward Tomasz Napierala ip = is->is_login_pdu; 1698009ea47eSEdward Tomasz Napierala is->is_login_pdu = NULL; 1699009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1700009ea47eSEdward Tomasz Napierala 1701009ea47eSEdward Tomasz Napierala if (ip->ip_data_len > idr->idr_data_segment_len) { 1702009ea47eSEdward Tomasz Napierala icl_pdu_free(ip); 1703009ea47eSEdward Tomasz Napierala return (EMSGSIZE); 1704009ea47eSEdward Tomasz Napierala } 1705009ea47eSEdward Tomasz Napierala 1706009ea47eSEdward Tomasz Napierala copyout(ip->ip_bhs, idr->idr_bhs, sizeof(*ip->ip_bhs)); 1707009ea47eSEdward Tomasz Napierala if (ip->ip_data_len > 0) { 1708009ea47eSEdward Tomasz Napierala data = malloc(ip->ip_data_len, M_ISCSI, M_WAITOK); 1709009ea47eSEdward Tomasz Napierala icl_pdu_get_data(ip, 0, data, ip->ip_data_len); 1710009ea47eSEdward Tomasz Napierala copyout(data, idr->idr_data_segment, ip->ip_data_len); 1711009ea47eSEdward Tomasz Napierala free(data, M_ISCSI); 1712009ea47eSEdward Tomasz Napierala } 1713009ea47eSEdward Tomasz Napierala 1714009ea47eSEdward Tomasz Napierala icl_pdu_free(ip); 1715009ea47eSEdward Tomasz Napierala 1716009ea47eSEdward Tomasz Napierala return (0); 1717009ea47eSEdward Tomasz Napierala } 1718009ea47eSEdward Tomasz Napierala #endif /* ICL_KERNEL_PROXY */ 1719009ea47eSEdward Tomasz Napierala 1720009ea47eSEdward Tomasz Napierala static void 1721009ea47eSEdward Tomasz Napierala iscsi_sanitize_session_conf(struct iscsi_session_conf *isc) 1722009ea47eSEdward Tomasz Napierala { 1723009ea47eSEdward Tomasz Napierala /* 1724009ea47eSEdward Tomasz Napierala * Just make sure all the fields are null-terminated. 1725009ea47eSEdward Tomasz Napierala * 1726009ea47eSEdward Tomasz Napierala * XXX: This is not particularly secure. We should 1727009ea47eSEdward Tomasz Napierala * create our own conf and then copy in relevant 1728009ea47eSEdward Tomasz Napierala * fields. 1729009ea47eSEdward Tomasz Napierala */ 1730009ea47eSEdward Tomasz Napierala isc->isc_initiator[ISCSI_NAME_LEN - 1] = '\0'; 1731009ea47eSEdward Tomasz Napierala isc->isc_initiator_addr[ISCSI_ADDR_LEN - 1] = '\0'; 1732009ea47eSEdward Tomasz Napierala isc->isc_initiator_alias[ISCSI_ALIAS_LEN - 1] = '\0'; 1733009ea47eSEdward Tomasz Napierala isc->isc_target[ISCSI_NAME_LEN - 1] = '\0'; 1734009ea47eSEdward Tomasz Napierala isc->isc_target_addr[ISCSI_ADDR_LEN - 1] = '\0'; 1735009ea47eSEdward Tomasz Napierala isc->isc_user[ISCSI_NAME_LEN - 1] = '\0'; 1736009ea47eSEdward Tomasz Napierala isc->isc_secret[ISCSI_SECRET_LEN - 1] = '\0'; 1737009ea47eSEdward Tomasz Napierala isc->isc_mutual_user[ISCSI_NAME_LEN - 1] = '\0'; 1738009ea47eSEdward Tomasz Napierala isc->isc_mutual_secret[ISCSI_SECRET_LEN - 1] = '\0'; 1739009ea47eSEdward Tomasz Napierala } 1740009ea47eSEdward Tomasz Napierala 174151be90b5SEdward Tomasz Napierala static bool 174251be90b5SEdward Tomasz Napierala iscsi_valid_session_conf(const struct iscsi_session_conf *isc) 174351be90b5SEdward Tomasz Napierala { 174451be90b5SEdward Tomasz Napierala 174551be90b5SEdward Tomasz Napierala if (isc->isc_initiator[0] == '\0') { 174651be90b5SEdward Tomasz Napierala ISCSI_DEBUG("empty isc_initiator"); 174751be90b5SEdward Tomasz Napierala return (false); 174851be90b5SEdward Tomasz Napierala } 174951be90b5SEdward Tomasz Napierala 175051be90b5SEdward Tomasz Napierala if (isc->isc_target_addr[0] == '\0') { 175151be90b5SEdward Tomasz Napierala ISCSI_DEBUG("empty isc_target_addr"); 175251be90b5SEdward Tomasz Napierala return (false); 175351be90b5SEdward Tomasz Napierala } 175451be90b5SEdward Tomasz Napierala 175551be90b5SEdward Tomasz Napierala if (isc->isc_discovery != 0 && isc->isc_target[0] != 0) { 175651be90b5SEdward Tomasz Napierala ISCSI_DEBUG("non-empty isc_target for discovery session"); 175751be90b5SEdward Tomasz Napierala return (false); 175851be90b5SEdward Tomasz Napierala } 175951be90b5SEdward Tomasz Napierala 176051be90b5SEdward Tomasz Napierala if (isc->isc_discovery == 0 && isc->isc_target[0] == 0) { 176151be90b5SEdward Tomasz Napierala ISCSI_DEBUG("empty isc_target for non-discovery session"); 176251be90b5SEdward Tomasz Napierala return (false); 176351be90b5SEdward Tomasz Napierala } 176451be90b5SEdward Tomasz Napierala 176551be90b5SEdward Tomasz Napierala return (true); 176651be90b5SEdward Tomasz Napierala } 176751be90b5SEdward Tomasz Napierala 1768009ea47eSEdward Tomasz Napierala static int 1769009ea47eSEdward Tomasz Napierala iscsi_ioctl_session_add(struct iscsi_softc *sc, struct iscsi_session_add *isa) 1770009ea47eSEdward Tomasz Napierala { 1771009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1772009ea47eSEdward Tomasz Napierala const struct iscsi_session *is2; 1773009ea47eSEdward Tomasz Napierala int error; 1774009ea47eSEdward Tomasz Napierala 1775009ea47eSEdward Tomasz Napierala iscsi_sanitize_session_conf(&isa->isa_conf); 177651be90b5SEdward Tomasz Napierala if (iscsi_valid_session_conf(&isa->isa_conf) == false) 177751be90b5SEdward Tomasz Napierala return (EINVAL); 1778009ea47eSEdward Tomasz Napierala 1779009ea47eSEdward Tomasz Napierala is = malloc(sizeof(*is), M_ISCSI, M_ZERO | M_WAITOK); 1780009ea47eSEdward Tomasz Napierala memcpy(&is->is_conf, &isa->isa_conf, sizeof(is->is_conf)); 1781009ea47eSEdward Tomasz Napierala 1782009ea47eSEdward Tomasz Napierala sx_xlock(&sc->sc_lock); 1783009ea47eSEdward Tomasz Napierala 1784009ea47eSEdward Tomasz Napierala /* 1785009ea47eSEdward Tomasz Napierala * Prevent duplicates. 1786009ea47eSEdward Tomasz Napierala */ 1787009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is2, &sc->sc_sessions, is_next) { 17887843bd03SEdward Tomasz Napierala if (!!is->is_conf.isc_discovery != 17897843bd03SEdward Tomasz Napierala !!is2->is_conf.isc_discovery) 17907843bd03SEdward Tomasz Napierala continue; 17917843bd03SEdward Tomasz Napierala 17927843bd03SEdward Tomasz Napierala if (strcmp(is->is_conf.isc_target_addr, 17937843bd03SEdward Tomasz Napierala is2->is_conf.isc_target_addr) != 0) 17947843bd03SEdward Tomasz Napierala continue; 17957843bd03SEdward Tomasz Napierala 17967843bd03SEdward Tomasz Napierala if (is->is_conf.isc_discovery == 0 && 17977843bd03SEdward Tomasz Napierala strcmp(is->is_conf.isc_target, 17987843bd03SEdward Tomasz Napierala is2->is_conf.isc_target) != 0) 17997843bd03SEdward Tomasz Napierala continue; 18007843bd03SEdward Tomasz Napierala 1801009ea47eSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 18027843bd03SEdward Tomasz Napierala free(is, M_ISCSI); 1803009ea47eSEdward Tomasz Napierala return (EBUSY); 1804009ea47eSEdward Tomasz Napierala } 1805009ea47eSEdward Tomasz Napierala 180682babffbSEdward Tomasz Napierala is->is_conn = icl_new_conn(is->is_conf.isc_offload, 1807b8911594SEdward Tomasz Napierala is->is_conf.isc_iser, "iscsi", &is->is_lock); 180882babffbSEdward Tomasz Napierala if (is->is_conn == NULL) { 180982babffbSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 181082babffbSEdward Tomasz Napierala free(is, M_ISCSI); 181182babffbSEdward Tomasz Napierala return (EINVAL); 181282babffbSEdward Tomasz Napierala } 1813009ea47eSEdward Tomasz Napierala is->is_conn->ic_receive = iscsi_receive_callback; 1814009ea47eSEdward Tomasz Napierala is->is_conn->ic_error = iscsi_error_callback; 1815009ea47eSEdward Tomasz Napierala is->is_conn->ic_prv0 = is; 1816009ea47eSEdward Tomasz Napierala TAILQ_INIT(&is->is_outstanding); 181716c158a5SEdward Tomasz Napierala STAILQ_INIT(&is->is_postponed); 1818009ea47eSEdward Tomasz Napierala mtx_init(&is->is_lock, "iscsi_lock", NULL, MTX_DEF); 1819009ea47eSEdward Tomasz Napierala cv_init(&is->is_maintenance_cv, "iscsi_mt"); 1820009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 1821009ea47eSEdward Tomasz Napierala cv_init(&is->is_login_cv, "iscsi_login"); 1822009ea47eSEdward Tomasz Napierala #endif 1823009ea47eSEdward Tomasz Napierala 1824009ea47eSEdward Tomasz Napierala is->is_softc = sc; 1825009ea47eSEdward Tomasz Napierala sc->sc_last_session_id++; 1826009ea47eSEdward Tomasz Napierala is->is_id = sc->sc_last_session_id; 1827ffe82e05SAlexander Motin is->is_isid[0] = 0x80; /* RFC 3720, 10.12.5: 10b, "Random" ISID. */ 1828ffe82e05SAlexander Motin arc4rand(&is->is_isid[1], 5, 0); 1829ffe82e05SAlexander Motin is->is_tsih = 0; 1830009ea47eSEdward Tomasz Napierala callout_init(&is->is_callout, 1); 1831009ea47eSEdward Tomasz Napierala 1832009ea47eSEdward Tomasz Napierala error = kthread_add(iscsi_maintenance_thread, is, NULL, NULL, 0, 0, "iscsimt"); 1833009ea47eSEdward Tomasz Napierala if (error != 0) { 1834009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "kthread_add(9) failed with error %d", error); 183509f2b94bSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 1836009ea47eSEdward Tomasz Napierala return (error); 1837009ea47eSEdward Tomasz Napierala } 1838009ea47eSEdward Tomasz Napierala 183909f2b94bSEdward Tomasz Napierala callout_reset(&is->is_callout, 1 * hz, iscsi_callout, is); 184009f2b94bSEdward Tomasz Napierala TAILQ_INSERT_TAIL(&sc->sc_sessions, is, is_next); 184109f2b94bSEdward Tomasz Napierala 18422be596adSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1843ba165a31SEdward Tomasz Napierala /* 1844ba165a31SEdward Tomasz Napierala * Don't notify iscsid(8) if the session is disabled and it's not 1845ba165a31SEdward Tomasz Napierala * a discovery session, 1846ba165a31SEdward Tomasz Napierala */ 1847ba165a31SEdward Tomasz Napierala if (is->is_conf.isc_enable == 0 && is->is_conf.isc_discovery == 0) { 1848ba165a31SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1849ba165a31SEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 1850ba165a31SEdward Tomasz Napierala return (0); 1851ba165a31SEdward Tomasz Napierala } 1852ba165a31SEdward Tomasz Napierala 1853009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = true; 1854009ea47eSEdward Tomasz Napierala strlcpy(is->is_reason, "Waiting for iscsid(8)", sizeof(is->is_reason)); 18552be596adSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1856009ea47eSEdward Tomasz Napierala cv_signal(&sc->sc_cv); 1857009ea47eSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 1858009ea47eSEdward Tomasz Napierala return (0); 1859009ea47eSEdward Tomasz Napierala } 1860009ea47eSEdward Tomasz Napierala 1861009ea47eSEdward Tomasz Napierala static bool 1862009ea47eSEdward Tomasz Napierala iscsi_session_conf_matches(unsigned int id1, const struct iscsi_session_conf *c1, 1863009ea47eSEdward Tomasz Napierala unsigned int id2, const struct iscsi_session_conf *c2) 1864009ea47eSEdward Tomasz Napierala { 18656cc1e267SEdward Tomasz Napierala 18666cc1e267SEdward Tomasz Napierala if (id2 != 0 && id2 != id1) 1867009ea47eSEdward Tomasz Napierala return (false); 18686cc1e267SEdward Tomasz Napierala if (c2->isc_target[0] != '\0' && 18696cc1e267SEdward Tomasz Napierala strcmp(c1->isc_target, c2->isc_target) != 0) 18706cc1e267SEdward Tomasz Napierala return (false); 18716cc1e267SEdward Tomasz Napierala if (c2->isc_target_addr[0] != '\0' && 18726cc1e267SEdward Tomasz Napierala strcmp(c1->isc_target_addr, c2->isc_target_addr) != 0) 18736cc1e267SEdward Tomasz Napierala return (false); 18746cc1e267SEdward Tomasz Napierala return (true); 1875009ea47eSEdward Tomasz Napierala } 1876009ea47eSEdward Tomasz Napierala 1877009ea47eSEdward Tomasz Napierala static int 1878009ea47eSEdward Tomasz Napierala iscsi_ioctl_session_remove(struct iscsi_softc *sc, 1879009ea47eSEdward Tomasz Napierala struct iscsi_session_remove *isr) 1880009ea47eSEdward Tomasz Napierala { 1881009ea47eSEdward Tomasz Napierala struct iscsi_session *is, *tmp; 1882009ea47eSEdward Tomasz Napierala bool found = false; 1883009ea47eSEdward Tomasz Napierala 1884009ea47eSEdward Tomasz Napierala iscsi_sanitize_session_conf(&isr->isr_conf); 1885009ea47eSEdward Tomasz Napierala 1886009ea47eSEdward Tomasz Napierala sx_xlock(&sc->sc_lock); 1887009ea47eSEdward Tomasz Napierala TAILQ_FOREACH_SAFE(is, &sc->sc_sessions, is_next, tmp) { 1888009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1889009ea47eSEdward Tomasz Napierala if (iscsi_session_conf_matches(is->is_id, &is->is_conf, 1890009ea47eSEdward Tomasz Napierala isr->isr_session_id, &isr->isr_conf)) { 1891009ea47eSEdward Tomasz Napierala found = true; 1892009ea47eSEdward Tomasz Napierala iscsi_session_logout(is); 1893009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1894009ea47eSEdward Tomasz Napierala } 1895009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1896009ea47eSEdward Tomasz Napierala } 1897009ea47eSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 1898009ea47eSEdward Tomasz Napierala 1899009ea47eSEdward Tomasz Napierala if (!found) 1900009ea47eSEdward Tomasz Napierala return (ESRCH); 1901009ea47eSEdward Tomasz Napierala 1902009ea47eSEdward Tomasz Napierala return (0); 1903009ea47eSEdward Tomasz Napierala } 1904009ea47eSEdward Tomasz Napierala 1905009ea47eSEdward Tomasz Napierala static int 1906009ea47eSEdward Tomasz Napierala iscsi_ioctl_session_list(struct iscsi_softc *sc, struct iscsi_session_list *isl) 1907009ea47eSEdward Tomasz Napierala { 1908009ea47eSEdward Tomasz Napierala int error; 1909009ea47eSEdward Tomasz Napierala unsigned int i = 0; 1910009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1911009ea47eSEdward Tomasz Napierala struct iscsi_session_state iss; 1912009ea47eSEdward Tomasz Napierala 1913009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1914009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1915009ea47eSEdward Tomasz Napierala if (i >= isl->isl_nentries) { 1916009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1917009ea47eSEdward Tomasz Napierala return (EMSGSIZE); 1918009ea47eSEdward Tomasz Napierala } 1919009ea47eSEdward Tomasz Napierala memset(&iss, 0, sizeof(iss)); 1920009ea47eSEdward Tomasz Napierala memcpy(&iss.iss_conf, &is->is_conf, sizeof(iss.iss_conf)); 1921009ea47eSEdward Tomasz Napierala iss.iss_id = is->is_id; 1922009ea47eSEdward Tomasz Napierala strlcpy(iss.iss_target_alias, is->is_target_alias, sizeof(iss.iss_target_alias)); 1923009ea47eSEdward Tomasz Napierala strlcpy(iss.iss_reason, is->is_reason, sizeof(iss.iss_reason)); 192482babffbSEdward Tomasz Napierala strlcpy(iss.iss_offload, is->is_conn->ic_offload, sizeof(iss.iss_offload)); 1925009ea47eSEdward Tomasz Napierala 1926009ea47eSEdward Tomasz Napierala if (is->is_conn->ic_header_crc32c) 1927009ea47eSEdward Tomasz Napierala iss.iss_header_digest = ISCSI_DIGEST_CRC32C; 1928009ea47eSEdward Tomasz Napierala else 1929009ea47eSEdward Tomasz Napierala iss.iss_header_digest = ISCSI_DIGEST_NONE; 1930009ea47eSEdward Tomasz Napierala 1931009ea47eSEdward Tomasz Napierala if (is->is_conn->ic_data_crc32c) 1932009ea47eSEdward Tomasz Napierala iss.iss_data_digest = ISCSI_DIGEST_CRC32C; 1933009ea47eSEdward Tomasz Napierala else 1934009ea47eSEdward Tomasz Napierala iss.iss_data_digest = ISCSI_DIGEST_NONE; 1935009ea47eSEdward Tomasz Napierala 1936009ea47eSEdward Tomasz Napierala iss.iss_max_data_segment_length = is->is_max_data_segment_length; 1937*4e5408f1SEdward Tomasz Napierala iss.iss_max_burst_length = is->is_max_burst_length; 1938*4e5408f1SEdward Tomasz Napierala iss.iss_first_burst_length = is->is_first_burst_length; 1939009ea47eSEdward Tomasz Napierala iss.iss_immediate_data = is->is_immediate_data; 1940009ea47eSEdward Tomasz Napierala iss.iss_connected = is->is_connected; 1941009ea47eSEdward Tomasz Napierala 1942009ea47eSEdward Tomasz Napierala error = copyout(&iss, isl->isl_pstates + i, sizeof(iss)); 1943009ea47eSEdward Tomasz Napierala if (error != 0) { 1944009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1945009ea47eSEdward Tomasz Napierala return (error); 1946009ea47eSEdward Tomasz Napierala } 1947009ea47eSEdward Tomasz Napierala i++; 1948009ea47eSEdward Tomasz Napierala } 1949009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1950009ea47eSEdward Tomasz Napierala 1951009ea47eSEdward Tomasz Napierala isl->isl_nentries = i; 1952009ea47eSEdward Tomasz Napierala 1953009ea47eSEdward Tomasz Napierala return (0); 1954009ea47eSEdward Tomasz Napierala } 1955009ea47eSEdward Tomasz Napierala 1956009ea47eSEdward Tomasz Napierala static int 195751be90b5SEdward Tomasz Napierala iscsi_ioctl_session_modify(struct iscsi_softc *sc, 195851be90b5SEdward Tomasz Napierala struct iscsi_session_modify *ism) 195951be90b5SEdward Tomasz Napierala { 196051be90b5SEdward Tomasz Napierala struct iscsi_session *is; 196151be90b5SEdward Tomasz Napierala 196251be90b5SEdward Tomasz Napierala iscsi_sanitize_session_conf(&ism->ism_conf); 196351be90b5SEdward Tomasz Napierala if (iscsi_valid_session_conf(&ism->ism_conf) == false) 196451be90b5SEdward Tomasz Napierala return (EINVAL); 196551be90b5SEdward Tomasz Napierala 196651be90b5SEdward Tomasz Napierala sx_xlock(&sc->sc_lock); 196751be90b5SEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 196851be90b5SEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 196951be90b5SEdward Tomasz Napierala if (is->is_id == ism->ism_session_id) 197051be90b5SEdward Tomasz Napierala break; 197151be90b5SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 197251be90b5SEdward Tomasz Napierala } 197351be90b5SEdward Tomasz Napierala if (is == NULL) { 197451be90b5SEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 197551be90b5SEdward Tomasz Napierala return (ESRCH); 197651be90b5SEdward Tomasz Napierala } 197751be90b5SEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 197851be90b5SEdward Tomasz Napierala 197951be90b5SEdward Tomasz Napierala memcpy(&is->is_conf, &ism->ism_conf, sizeof(is->is_conf)); 198051be90b5SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 198151be90b5SEdward Tomasz Napierala 198251be90b5SEdward Tomasz Napierala iscsi_session_reconnect(is); 198351be90b5SEdward Tomasz Napierala 198451be90b5SEdward Tomasz Napierala return (0); 198551be90b5SEdward Tomasz Napierala } 198651be90b5SEdward Tomasz Napierala 198751be90b5SEdward Tomasz Napierala static int 1988009ea47eSEdward Tomasz Napierala iscsi_ioctl(struct cdev *dev, u_long cmd, caddr_t arg, int mode, 1989009ea47eSEdward Tomasz Napierala struct thread *td) 1990009ea47eSEdward Tomasz Napierala { 1991009ea47eSEdward Tomasz Napierala struct iscsi_softc *sc; 1992009ea47eSEdward Tomasz Napierala 1993009ea47eSEdward Tomasz Napierala sc = dev->si_drv1; 1994009ea47eSEdward Tomasz Napierala 1995009ea47eSEdward Tomasz Napierala switch (cmd) { 1996009ea47eSEdward Tomasz Napierala case ISCSIDWAIT: 1997009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_wait(sc, 1998009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_request *)arg)); 1999009ea47eSEdward Tomasz Napierala case ISCSIDHANDOFF: 2000009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_handoff(sc, 2001009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_handoff *)arg)); 2002009ea47eSEdward Tomasz Napierala case ISCSIDFAIL: 2003009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_fail(sc, 2004009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_fail *)arg)); 2005009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 2006009ea47eSEdward Tomasz Napierala case ISCSIDCONNECT: 2007009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_connect(sc, 2008009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_connect *)arg)); 2009009ea47eSEdward Tomasz Napierala case ISCSIDSEND: 2010009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_send(sc, 2011009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_send *)arg)); 2012009ea47eSEdward Tomasz Napierala case ISCSIDRECEIVE: 2013009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_receive(sc, 2014009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_receive *)arg)); 2015009ea47eSEdward Tomasz Napierala #endif /* ICL_KERNEL_PROXY */ 2016009ea47eSEdward Tomasz Napierala case ISCSISADD: 2017009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_session_add(sc, 2018009ea47eSEdward Tomasz Napierala (struct iscsi_session_add *)arg)); 2019009ea47eSEdward Tomasz Napierala case ISCSISREMOVE: 2020009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_session_remove(sc, 2021009ea47eSEdward Tomasz Napierala (struct iscsi_session_remove *)arg)); 2022009ea47eSEdward Tomasz Napierala case ISCSISLIST: 2023009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_session_list(sc, 2024009ea47eSEdward Tomasz Napierala (struct iscsi_session_list *)arg)); 202551be90b5SEdward Tomasz Napierala case ISCSISMODIFY: 202651be90b5SEdward Tomasz Napierala return (iscsi_ioctl_session_modify(sc, 202751be90b5SEdward Tomasz Napierala (struct iscsi_session_modify *)arg)); 2028009ea47eSEdward Tomasz Napierala default: 2029009ea47eSEdward Tomasz Napierala return (EINVAL); 2030009ea47eSEdward Tomasz Napierala } 2031009ea47eSEdward Tomasz Napierala } 2032009ea47eSEdward Tomasz Napierala 2033009ea47eSEdward Tomasz Napierala static struct iscsi_outstanding * 2034009ea47eSEdward Tomasz Napierala iscsi_outstanding_find(struct iscsi_session *is, uint32_t initiator_task_tag) 2035009ea47eSEdward Tomasz Napierala { 2036009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io; 2037009ea47eSEdward Tomasz Napierala 2038009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 2039009ea47eSEdward Tomasz Napierala 2040009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(io, &is->is_outstanding, io_next) { 2041009ea47eSEdward Tomasz Napierala if (io->io_initiator_task_tag == initiator_task_tag) 2042009ea47eSEdward Tomasz Napierala return (io); 2043009ea47eSEdward Tomasz Napierala } 2044009ea47eSEdward Tomasz Napierala return (NULL); 2045009ea47eSEdward Tomasz Napierala } 2046009ea47eSEdward Tomasz Napierala 2047aa75114cSAlexander Motin static struct iscsi_outstanding * 2048aa75114cSAlexander Motin iscsi_outstanding_find_ccb(struct iscsi_session *is, union ccb *ccb) 2049aa75114cSAlexander Motin { 2050aa75114cSAlexander Motin struct iscsi_outstanding *io; 2051aa75114cSAlexander Motin 2052aa75114cSAlexander Motin ISCSI_SESSION_LOCK_ASSERT(is); 2053aa75114cSAlexander Motin 2054aa75114cSAlexander Motin TAILQ_FOREACH(io, &is->is_outstanding, io_next) { 2055aa75114cSAlexander Motin if (io->io_ccb == ccb) 2056aa75114cSAlexander Motin return (io); 2057aa75114cSAlexander Motin } 2058aa75114cSAlexander Motin return (NULL); 2059aa75114cSAlexander Motin } 2060aa75114cSAlexander Motin 2061aa75114cSAlexander Motin static struct iscsi_outstanding * 2062604c023fSEdward Tomasz Napierala iscsi_outstanding_add(struct iscsi_session *is, struct icl_pdu *request, 20637a03d007SEdward Tomasz Napierala union ccb *ccb, uint32_t *initiator_task_tagp) 2064009ea47eSEdward Tomasz Napierala { 2065009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io; 20667a03d007SEdward Tomasz Napierala int error; 2067009ea47eSEdward Tomasz Napierala 2068009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 2069009ea47eSEdward Tomasz Napierala 2070009ea47eSEdward Tomasz Napierala io = uma_zalloc(iscsi_outstanding_zone, M_NOWAIT | M_ZERO); 2071009ea47eSEdward Tomasz Napierala if (io == NULL) { 20727a03d007SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate %zd bytes", 20737a03d007SEdward Tomasz Napierala sizeof(*io)); 2074aa75114cSAlexander Motin return (NULL); 2075009ea47eSEdward Tomasz Napierala } 20767a03d007SEdward Tomasz Napierala 2077604c023fSEdward Tomasz Napierala error = icl_conn_task_setup(is->is_conn, request, &ccb->csio, 20787a03d007SEdward Tomasz Napierala initiator_task_tagp, &io->io_icl_prv); 20797a03d007SEdward Tomasz Napierala if (error != 0) { 20807a03d007SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, 20817a03d007SEdward Tomasz Napierala "icl_conn_task_setup() failed with error %d", error); 20827a03d007SEdward Tomasz Napierala uma_zfree(iscsi_outstanding_zone, io); 20837a03d007SEdward Tomasz Napierala return (NULL); 20847a03d007SEdward Tomasz Napierala } 20857a03d007SEdward Tomasz Napierala 20867a03d007SEdward Tomasz Napierala KASSERT(iscsi_outstanding_find(is, *initiator_task_tagp) == NULL, 20877a03d007SEdward Tomasz Napierala ("initiator_task_tag 0x%x already added", *initiator_task_tagp)); 20887a03d007SEdward Tomasz Napierala 20897a03d007SEdward Tomasz Napierala io->io_initiator_task_tag = *initiator_task_tagp; 2090009ea47eSEdward Tomasz Napierala io->io_ccb = ccb; 2091009ea47eSEdward Tomasz Napierala TAILQ_INSERT_TAIL(&is->is_outstanding, io, io_next); 2092aa75114cSAlexander Motin return (io); 2093009ea47eSEdward Tomasz Napierala } 2094009ea47eSEdward Tomasz Napierala 2095009ea47eSEdward Tomasz Napierala static void 2096009ea47eSEdward Tomasz Napierala iscsi_outstanding_remove(struct iscsi_session *is, struct iscsi_outstanding *io) 2097009ea47eSEdward Tomasz Napierala { 2098009ea47eSEdward Tomasz Napierala 2099009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 2100009ea47eSEdward Tomasz Napierala 21017a03d007SEdward Tomasz Napierala icl_conn_task_done(is->is_conn, io->io_icl_prv); 2102009ea47eSEdward Tomasz Napierala TAILQ_REMOVE(&is->is_outstanding, io, io_next); 2103009ea47eSEdward Tomasz Napierala uma_zfree(iscsi_outstanding_zone, io); 2104009ea47eSEdward Tomasz Napierala } 2105009ea47eSEdward Tomasz Napierala 2106009ea47eSEdward Tomasz Napierala static void 2107aa75114cSAlexander Motin iscsi_action_abort(struct iscsi_session *is, union ccb *ccb) 2108aa75114cSAlexander Motin { 2109aa75114cSAlexander Motin struct icl_pdu *request; 2110aa75114cSAlexander Motin struct iscsi_bhs_task_management_request *bhstmr; 2111aa75114cSAlexander Motin struct ccb_abort *cab = &ccb->cab; 2112aa75114cSAlexander Motin struct iscsi_outstanding *io, *aio; 21137a03d007SEdward Tomasz Napierala uint32_t initiator_task_tag; 2114aa75114cSAlexander Motin 2115aa75114cSAlexander Motin ISCSI_SESSION_LOCK_ASSERT(is); 2116aa75114cSAlexander Motin 2117aa75114cSAlexander Motin #if 0 2118aa75114cSAlexander Motin KASSERT(is->is_login_phase == false, ("%s called during Login Phase", __func__)); 2119aa75114cSAlexander Motin #else 2120aa75114cSAlexander Motin if (is->is_login_phase) { 2121aa75114cSAlexander Motin ccb->ccb_h.status = CAM_REQ_ABORTED; 2122aa75114cSAlexander Motin xpt_done(ccb); 2123aa75114cSAlexander Motin return; 2124aa75114cSAlexander Motin } 2125aa75114cSAlexander Motin #endif 2126aa75114cSAlexander Motin 2127aa75114cSAlexander Motin aio = iscsi_outstanding_find_ccb(is, cab->abort_ccb); 2128aa75114cSAlexander Motin if (aio == NULL) { 2129aa75114cSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP; 2130aa75114cSAlexander Motin xpt_done(ccb); 2131aa75114cSAlexander Motin return; 2132aa75114cSAlexander Motin } 2133aa75114cSAlexander Motin 2134d2d52b00SEdward Tomasz Napierala request = icl_pdu_new(is->is_conn, M_NOWAIT); 2135aa75114cSAlexander Motin if (request == NULL) { 2136aa75114cSAlexander Motin ccb->ccb_h.status = CAM_RESRC_UNAVAIL; 2137aa75114cSAlexander Motin xpt_done(ccb); 2138aa75114cSAlexander Motin return; 2139aa75114cSAlexander Motin } 2140aa75114cSAlexander Motin 21417a03d007SEdward Tomasz Napierala initiator_task_tag = is->is_initiator_task_tag++; 2142aa75114cSAlexander Motin 2143604c023fSEdward Tomasz Napierala io = iscsi_outstanding_add(is, request, NULL, &initiator_task_tag); 2144aa75114cSAlexander Motin if (io == NULL) { 2145aa75114cSAlexander Motin icl_pdu_free(request); 2146aa75114cSAlexander Motin ccb->ccb_h.status = CAM_RESRC_UNAVAIL; 2147aa75114cSAlexander Motin xpt_done(ccb); 2148aa75114cSAlexander Motin return; 2149aa75114cSAlexander Motin } 2150aa75114cSAlexander Motin io->io_datasn = aio->io_initiator_task_tag; 21517a03d007SEdward Tomasz Napierala 21527a03d007SEdward Tomasz Napierala bhstmr = (struct iscsi_bhs_task_management_request *)request->ip_bhs; 21537a03d007SEdward Tomasz Napierala bhstmr->bhstmr_opcode = ISCSI_BHS_OPCODE_TASK_REQUEST; 21547a03d007SEdward Tomasz Napierala bhstmr->bhstmr_function = 0x80 | BHSTMR_FUNCTION_ABORT_TASK; 21557a03d007SEdward Tomasz Napierala bhstmr->bhstmr_lun = htobe64(CAM_EXTLUN_BYTE_SWIZZLE(ccb->ccb_h.target_lun)); 21567a03d007SEdward Tomasz Napierala bhstmr->bhstmr_initiator_task_tag = initiator_task_tag; 21577a03d007SEdward Tomasz Napierala bhstmr->bhstmr_referenced_task_tag = aio->io_initiator_task_tag; 21587a03d007SEdward Tomasz Napierala 2159aa75114cSAlexander Motin iscsi_pdu_queue_locked(request); 2160aa75114cSAlexander Motin } 2161aa75114cSAlexander Motin 2162aa75114cSAlexander Motin static void 2163009ea47eSEdward Tomasz Napierala iscsi_action_scsiio(struct iscsi_session *is, union ccb *ccb) 2164009ea47eSEdward Tomasz Napierala { 2165009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 2166009ea47eSEdward Tomasz Napierala struct iscsi_bhs_scsi_command *bhssc; 2167009ea47eSEdward Tomasz Napierala struct ccb_scsiio *csio; 2168aa75114cSAlexander Motin struct iscsi_outstanding *io; 2169009ea47eSEdward Tomasz Napierala size_t len; 21707a03d007SEdward Tomasz Napierala uint32_t initiator_task_tag; 2171009ea47eSEdward Tomasz Napierala int error; 2172009ea47eSEdward Tomasz Napierala 2173009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 2174009ea47eSEdward Tomasz Napierala 2175009ea47eSEdward Tomasz Napierala #if 0 2176009ea47eSEdward Tomasz Napierala KASSERT(is->is_login_phase == false, ("%s called during Login Phase", __func__)); 2177009ea47eSEdward Tomasz Napierala #else 2178009ea47eSEdward Tomasz Napierala if (is->is_login_phase) { 2179009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "called during login phase"); 2180009ea47eSEdward Tomasz Napierala if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 2181009ea47eSEdward Tomasz Napierala xpt_freeze_devq(ccb->ccb_h.path, 1); 2182009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 2183009ea47eSEdward Tomasz Napierala } 2184009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_REQ_ABORTED | CAM_DEV_QFRZN; 2185009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2186009ea47eSEdward Tomasz Napierala return; 2187009ea47eSEdward Tomasz Napierala } 2188009ea47eSEdward Tomasz Napierala #endif 2189009ea47eSEdward Tomasz Napierala 2190d2d52b00SEdward Tomasz Napierala request = icl_pdu_new(is->is_conn, M_NOWAIT); 2191009ea47eSEdward Tomasz Napierala if (request == NULL) { 2192009ea47eSEdward Tomasz Napierala if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 2193009ea47eSEdward Tomasz Napierala xpt_freeze_devq(ccb->ccb_h.path, 1); 2194009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 2195009ea47eSEdward Tomasz Napierala } 2196009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_RESRC_UNAVAIL | CAM_DEV_QFRZN; 2197009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2198009ea47eSEdward Tomasz Napierala return; 2199009ea47eSEdward Tomasz Napierala } 2200009ea47eSEdward Tomasz Napierala 22017a03d007SEdward Tomasz Napierala initiator_task_tag = is->is_initiator_task_tag++; 2202604c023fSEdward Tomasz Napierala io = iscsi_outstanding_add(is, request, ccb, &initiator_task_tag); 22037a03d007SEdward Tomasz Napierala if (io == NULL) { 22047a03d007SEdward Tomasz Napierala icl_pdu_free(request); 22057a03d007SEdward Tomasz Napierala if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 22067a03d007SEdward Tomasz Napierala xpt_freeze_devq(ccb->ccb_h.path, 1); 22077a03d007SEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 22087a03d007SEdward Tomasz Napierala } 22097a03d007SEdward Tomasz Napierala ccb->ccb_h.status = CAM_RESRC_UNAVAIL | CAM_DEV_QFRZN; 22107a03d007SEdward Tomasz Napierala xpt_done(ccb); 22117a03d007SEdward Tomasz Napierala return; 22127a03d007SEdward Tomasz Napierala } 22137a03d007SEdward Tomasz Napierala 2214009ea47eSEdward Tomasz Napierala csio = &ccb->csio; 2215009ea47eSEdward Tomasz Napierala bhssc = (struct iscsi_bhs_scsi_command *)request->ip_bhs; 2216009ea47eSEdward Tomasz Napierala bhssc->bhssc_opcode = ISCSI_BHS_OPCODE_SCSI_COMMAND; 2217009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_F; 2218009ea47eSEdward Tomasz Napierala switch (csio->ccb_h.flags & CAM_DIR_MASK) { 2219009ea47eSEdward Tomasz Napierala case CAM_DIR_IN: 2220009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_R; 2221009ea47eSEdward Tomasz Napierala break; 2222009ea47eSEdward Tomasz Napierala case CAM_DIR_OUT: 2223009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_W; 2224009ea47eSEdward Tomasz Napierala break; 2225009ea47eSEdward Tomasz Napierala } 2226009ea47eSEdward Tomasz Napierala 2227462cf3baSAlexander Motin if ((ccb->ccb_h.flags & CAM_TAG_ACTION_VALID) != 0) { 2228009ea47eSEdward Tomasz Napierala switch (csio->tag_action) { 2229009ea47eSEdward Tomasz Napierala case MSG_HEAD_OF_Q_TAG: 2230009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_HOQ; 2231009ea47eSEdward Tomasz Napierala break; 2232009ea47eSEdward Tomasz Napierala case MSG_ORDERED_Q_TAG: 2233009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_ORDERED; 2234009ea47eSEdward Tomasz Napierala break; 2235009ea47eSEdward Tomasz Napierala case MSG_ACA_TASK: 2236009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_ACA; 2237009ea47eSEdward Tomasz Napierala break; 2238009ea47eSEdward Tomasz Napierala case MSG_SIMPLE_Q_TAG: 2239009ea47eSEdward Tomasz Napierala default: 2240009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_SIMPLE; 2241009ea47eSEdward Tomasz Napierala break; 2242009ea47eSEdward Tomasz Napierala } 2243462cf3baSAlexander Motin } else 2244462cf3baSAlexander Motin bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_UNTAGGED; 2245009ea47eSEdward Tomasz Napierala 2246a9f2f291SEdward Tomasz Napierala bhssc->bhssc_lun = htobe64(CAM_EXTLUN_BYTE_SWIZZLE(ccb->ccb_h.target_lun)); 22477a03d007SEdward Tomasz Napierala bhssc->bhssc_initiator_task_tag = initiator_task_tag; 2248009ea47eSEdward Tomasz Napierala bhssc->bhssc_expected_data_transfer_length = htonl(csio->dxfer_len); 2249009ea47eSEdward Tomasz Napierala KASSERT(csio->cdb_len <= sizeof(bhssc->bhssc_cdb), 2250009ea47eSEdward Tomasz Napierala ("unsupported CDB size %zd", (size_t)csio->cdb_len)); 2251009ea47eSEdward Tomasz Napierala 2252009ea47eSEdward Tomasz Napierala if (csio->ccb_h.flags & CAM_CDB_POINTER) 2253009ea47eSEdward Tomasz Napierala memcpy(&bhssc->bhssc_cdb, csio->cdb_io.cdb_ptr, csio->cdb_len); 2254009ea47eSEdward Tomasz Napierala else 2255009ea47eSEdward Tomasz Napierala memcpy(&bhssc->bhssc_cdb, csio->cdb_io.cdb_bytes, csio->cdb_len); 2256009ea47eSEdward Tomasz Napierala 2257009ea47eSEdward Tomasz Napierala if (is->is_immediate_data && 2258009ea47eSEdward Tomasz Napierala (csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT) { 2259009ea47eSEdward Tomasz Napierala len = csio->dxfer_len; 2260009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "adding %zd of immediate data", len); 2261009ea47eSEdward Tomasz Napierala if (len > is->is_first_burst_length) { 2262009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "len %zd -> %zd", len, is->is_first_burst_length); 2263009ea47eSEdward Tomasz Napierala len = is->is_first_burst_length; 2264009ea47eSEdward Tomasz Napierala } 22653f9e1172SAlexander Motin if (len > is->is_max_data_segment_length) { 22663f9e1172SAlexander Motin ISCSI_SESSION_DEBUG(is, "len %zd -> %zd", len, is->is_max_data_segment_length); 22673f9e1172SAlexander Motin len = is->is_max_data_segment_length; 22683f9e1172SAlexander Motin } 2269009ea47eSEdward Tomasz Napierala 2270009ea47eSEdward Tomasz Napierala error = icl_pdu_append_data(request, csio->data_ptr, len, M_NOWAIT); 2271009ea47eSEdward Tomasz Napierala if (error != 0) { 2272938bcb04SEdward Tomasz Napierala iscsi_outstanding_remove(is, io); 2273009ea47eSEdward Tomasz Napierala icl_pdu_free(request); 2274009ea47eSEdward Tomasz Napierala if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 2275009ea47eSEdward Tomasz Napierala xpt_freeze_devq(ccb->ccb_h.path, 1); 2276009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 2277009ea47eSEdward Tomasz Napierala } 2278009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_RESRC_UNAVAIL | CAM_DEV_QFRZN; 2279009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2280009ea47eSEdward Tomasz Napierala return; 2281009ea47eSEdward Tomasz Napierala } 2282009ea47eSEdward Tomasz Napierala } 2283009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(request); 2284009ea47eSEdward Tomasz Napierala } 2285009ea47eSEdward Tomasz Napierala 2286009ea47eSEdward Tomasz Napierala static void 2287009ea47eSEdward Tomasz Napierala iscsi_action(struct cam_sim *sim, union ccb *ccb) 2288009ea47eSEdward Tomasz Napierala { 2289009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 2290009ea47eSEdward Tomasz Napierala 2291009ea47eSEdward Tomasz Napierala is = cam_sim_softc(sim); 2292009ea47eSEdward Tomasz Napierala 2293009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 2294009ea47eSEdward Tomasz Napierala 2295f1f12e40SEdward Tomasz Napierala if (is->is_terminating || 2296f1f12e40SEdward Tomasz Napierala (is->is_connected == false && fail_on_disconnection)) { 2297009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_DEV_NOT_THERE; 2298009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2299009ea47eSEdward Tomasz Napierala return; 2300009ea47eSEdward Tomasz Napierala } 2301009ea47eSEdward Tomasz Napierala 2302009ea47eSEdward Tomasz Napierala switch (ccb->ccb_h.func_code) { 2303009ea47eSEdward Tomasz Napierala case XPT_PATH_INQ: 2304009ea47eSEdward Tomasz Napierala { 2305009ea47eSEdward Tomasz Napierala struct ccb_pathinq *cpi = &ccb->cpi; 2306009ea47eSEdward Tomasz Napierala 2307009ea47eSEdward Tomasz Napierala cpi->version_num = 1; 2308009ea47eSEdward Tomasz Napierala cpi->hba_inquiry = PI_TAG_ABLE; 2309009ea47eSEdward Tomasz Napierala cpi->target_sprt = 0; 2310a9f2f291SEdward Tomasz Napierala cpi->hba_misc = PIM_EXTLUNS; 23117deb68abSEdward Tomasz Napierala /* 23127deb68abSEdward Tomasz Napierala * XXX: It shouldn't ever be NULL; this could be turned 23137deb68abSEdward Tomasz Napierala * into a KASSERT eventually. 23147deb68abSEdward Tomasz Napierala */ 23157deb68abSEdward Tomasz Napierala if (is->is_conn == NULL) 23167deb68abSEdward Tomasz Napierala ISCSI_WARN("NULL conn"); 23177deb68abSEdward Tomasz Napierala else if (is->is_conn->ic_unmapped) 23187deb68abSEdward Tomasz Napierala cpi->hba_misc |= PIM_UNMAPPED; 2319009ea47eSEdward Tomasz Napierala cpi->hba_eng_cnt = 0; 2320009ea47eSEdward Tomasz Napierala cpi->max_target = 0; 232117cf3eb1SEdward Tomasz Napierala /* 232217cf3eb1SEdward Tomasz Napierala * Note that the variable below is only relevant for targets 232317cf3eb1SEdward Tomasz Napierala * that don't claim compliance with anything above SPC2, which 232417cf3eb1SEdward Tomasz Napierala * means they don't support REPORT_LUNS. 232517cf3eb1SEdward Tomasz Napierala */ 232617cf3eb1SEdward Tomasz Napierala cpi->max_lun = 255; 2327a9f2f291SEdward Tomasz Napierala cpi->initiator_id = ~0; 23287843bd03SEdward Tomasz Napierala strlcpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); 23297843bd03SEdward Tomasz Napierala strlcpy(cpi->hba_vid, "iSCSI", HBA_IDLEN); 23307843bd03SEdward Tomasz Napierala strlcpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); 2331009ea47eSEdward Tomasz Napierala cpi->unit_number = cam_sim_unit(sim); 2332009ea47eSEdward Tomasz Napierala cpi->bus_id = cam_sim_bus(sim); 2333009ea47eSEdward Tomasz Napierala cpi->base_transfer_speed = 150000; /* XXX */ 2334009ea47eSEdward Tomasz Napierala cpi->transport = XPORT_ISCSI; 2335009ea47eSEdward Tomasz Napierala cpi->transport_version = 0; 2336009ea47eSEdward Tomasz Napierala cpi->protocol = PROTO_SCSI; 2337009ea47eSEdward Tomasz Napierala cpi->protocol_version = SCSI_REV_SPC3; 2338009ea47eSEdward Tomasz Napierala cpi->maxio = MAXPHYS; 2339009ea47eSEdward Tomasz Napierala cpi->ccb_h.status = CAM_REQ_CMP; 2340009ea47eSEdward Tomasz Napierala break; 2341009ea47eSEdward Tomasz Napierala } 2342462cf3baSAlexander Motin case XPT_GET_TRAN_SETTINGS: 2343462cf3baSAlexander Motin { 2344462cf3baSAlexander Motin struct ccb_trans_settings *cts; 2345462cf3baSAlexander Motin struct ccb_trans_settings_scsi *scsi; 2346462cf3baSAlexander Motin 2347462cf3baSAlexander Motin cts = &ccb->cts; 2348462cf3baSAlexander Motin scsi = &cts->proto_specific.scsi; 2349462cf3baSAlexander Motin 2350462cf3baSAlexander Motin cts->protocol = PROTO_SCSI; 2351462cf3baSAlexander Motin cts->protocol_version = SCSI_REV_SPC3; 2352462cf3baSAlexander Motin cts->transport = XPORT_ISCSI; 2353462cf3baSAlexander Motin cts->transport_version = 0; 2354462cf3baSAlexander Motin scsi->valid = CTS_SCSI_VALID_TQ; 2355462cf3baSAlexander Motin scsi->flags = CTS_SCSI_FLAGS_TAG_ENB; 2356462cf3baSAlexander Motin cts->ccb_h.status = CAM_REQ_CMP; 2357462cf3baSAlexander Motin break; 2358462cf3baSAlexander Motin } 2359009ea47eSEdward Tomasz Napierala case XPT_CALC_GEOMETRY: 2360009ea47eSEdward Tomasz Napierala cam_calc_geometry(&ccb->ccg, /*extended*/1); 2361009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_REQ_CMP; 2362009ea47eSEdward Tomasz Napierala break; 2363009ea47eSEdward Tomasz Napierala #if 0 2364009ea47eSEdward Tomasz Napierala /* 2365009ea47eSEdward Tomasz Napierala * XXX: What's the point? 2366009ea47eSEdward Tomasz Napierala */ 2367009ea47eSEdward Tomasz Napierala case XPT_RESET_BUS: 2368009ea47eSEdward Tomasz Napierala case XPT_TERM_IO: 2369009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "faking success for reset, abort, or term_io"); 2370009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_REQ_CMP; 2371009ea47eSEdward Tomasz Napierala break; 2372009ea47eSEdward Tomasz Napierala #endif 2373aa75114cSAlexander Motin case XPT_ABORT: 2374aa75114cSAlexander Motin iscsi_action_abort(is, ccb); 2375aa75114cSAlexander Motin return; 2376009ea47eSEdward Tomasz Napierala case XPT_SCSI_IO: 2377009ea47eSEdward Tomasz Napierala iscsi_action_scsiio(is, ccb); 2378009ea47eSEdward Tomasz Napierala return; 2379009ea47eSEdward Tomasz Napierala default: 2380009ea47eSEdward Tomasz Napierala #if 0 2381009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "got unsupported code 0x%x", ccb->ccb_h.func_code); 2382009ea47eSEdward Tomasz Napierala #endif 2383009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_FUNC_NOTAVAIL; 2384009ea47eSEdward Tomasz Napierala break; 2385009ea47eSEdward Tomasz Napierala } 2386009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2387009ea47eSEdward Tomasz Napierala } 2388009ea47eSEdward Tomasz Napierala 2389009ea47eSEdward Tomasz Napierala static void 2390009ea47eSEdward Tomasz Napierala iscsi_poll(struct cam_sim *sim) 2391009ea47eSEdward Tomasz Napierala { 2392009ea47eSEdward Tomasz Napierala 2393009ea47eSEdward Tomasz Napierala KASSERT(0, ("%s: you're not supposed to be here", __func__)); 2394009ea47eSEdward Tomasz Napierala } 2395009ea47eSEdward Tomasz Napierala 2396009ea47eSEdward Tomasz Napierala static void 2397481b36c6SSteven Hartland iscsi_terminate_sessions(struct iscsi_softc *sc) 2398009ea47eSEdward Tomasz Napierala { 2399009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 2400009ea47eSEdward Tomasz Napierala 2401481b36c6SSteven Hartland sx_slock(&sc->sc_lock); 2402481b36c6SSteven Hartland TAILQ_FOREACH(is, &sc->sc_sessions, is_next) 2403481b36c6SSteven Hartland iscsi_session_terminate(is); 2404481b36c6SSteven Hartland while(!TAILQ_EMPTY(&sc->sc_sessions)) { 2405481b36c6SSteven Hartland ISCSI_DEBUG("waiting for sessions to terminate"); 2406481b36c6SSteven Hartland cv_wait(&sc->sc_cv, &sc->sc_lock); 2407481b36c6SSteven Hartland } 2408481b36c6SSteven Hartland ISCSI_DEBUG("all sessions terminated"); 2409481b36c6SSteven Hartland sx_sunlock(&sc->sc_lock); 2410481b36c6SSteven Hartland } 2411481b36c6SSteven Hartland 2412481b36c6SSteven Hartland static void 2413481b36c6SSteven Hartland iscsi_shutdown_pre(struct iscsi_softc *sc) 2414481b36c6SSteven Hartland { 2415481b36c6SSteven Hartland struct iscsi_session *is; 2416481b36c6SSteven Hartland 2417481b36c6SSteven Hartland if (!fail_on_shutdown) 2418481b36c6SSteven Hartland return; 2419009ea47eSEdward Tomasz Napierala 2420e553ca49SEdward Tomasz Napierala /* 2421e553ca49SEdward Tomasz Napierala * If we have any sessions waiting for reconnection, request 2422e553ca49SEdward Tomasz Napierala * maintenance thread to fail them immediately instead of waiting 2423e553ca49SEdward Tomasz Napierala * for reconnect timeout. 2424481b36c6SSteven Hartland * 2425481b36c6SSteven Hartland * This prevents LUNs with mounted filesystems that are supported 2426481b36c6SSteven Hartland * by disconnected iSCSI sessions from hanging, however it will 2427481b36c6SSteven Hartland * fail all queued BIOs. 2428e553ca49SEdward Tomasz Napierala */ 2429481b36c6SSteven Hartland ISCSI_DEBUG("forcing failing all disconnected sessions due to shutdown"); 2430481b36c6SSteven Hartland 2431481b36c6SSteven Hartland fail_on_disconnection = 1; 2432481b36c6SSteven Hartland 2433009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 2434e553ca49SEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 2435e553ca49SEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 2436481b36c6SSteven Hartland if (!is->is_connected) { 2437481b36c6SSteven Hartland ISCSI_SESSION_DEBUG(is, "force failing disconnected session early"); 2438e553ca49SEdward Tomasz Napierala iscsi_session_reconnect(is); 2439481b36c6SSteven Hartland } 2440e553ca49SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 2441e553ca49SEdward Tomasz Napierala } 2442009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 2443009ea47eSEdward Tomasz Napierala } 2444009ea47eSEdward Tomasz Napierala 2445481b36c6SSteven Hartland static void 2446481b36c6SSteven Hartland iscsi_shutdown_post(struct iscsi_softc *sc) 2447481b36c6SSteven Hartland { 2448481b36c6SSteven Hartland 2449481b36c6SSteven Hartland ISCSI_DEBUG("removing all sessions due to shutdown"); 2450481b36c6SSteven Hartland iscsi_terminate_sessions(sc); 2451481b36c6SSteven Hartland } 2452481b36c6SSteven Hartland 2453009ea47eSEdward Tomasz Napierala static int 2454009ea47eSEdward Tomasz Napierala iscsi_load(void) 2455009ea47eSEdward Tomasz Napierala { 2456009ea47eSEdward Tomasz Napierala int error; 2457009ea47eSEdward Tomasz Napierala 2458009ea47eSEdward Tomasz Napierala sc = malloc(sizeof(*sc), M_ISCSI, M_ZERO | M_WAITOK); 2459009ea47eSEdward Tomasz Napierala sx_init(&sc->sc_lock, "iscsi"); 2460009ea47eSEdward Tomasz Napierala TAILQ_INIT(&sc->sc_sessions); 2461009ea47eSEdward Tomasz Napierala cv_init(&sc->sc_cv, "iscsi_cv"); 2462009ea47eSEdward Tomasz Napierala 2463009ea47eSEdward Tomasz Napierala iscsi_outstanding_zone = uma_zcreate("iscsi_outstanding", 2464009ea47eSEdward Tomasz Napierala sizeof(struct iscsi_outstanding), NULL, NULL, NULL, NULL, 2465c28c09c1SEdward Tomasz Napierala UMA_ALIGN_PTR, 0); 2466009ea47eSEdward Tomasz Napierala 2467009ea47eSEdward Tomasz Napierala error = make_dev_p(MAKEDEV_CHECKNAME, &sc->sc_cdev, &iscsi_cdevsw, 2468009ea47eSEdward Tomasz Napierala NULL, UID_ROOT, GID_WHEEL, 0600, "iscsi"); 2469009ea47eSEdward Tomasz Napierala if (error != 0) { 2470009ea47eSEdward Tomasz Napierala ISCSI_WARN("failed to create device node, error %d", error); 2471009ea47eSEdward Tomasz Napierala return (error); 2472009ea47eSEdward Tomasz Napierala } 2473009ea47eSEdward Tomasz Napierala sc->sc_cdev->si_drv1 = sc; 2474009ea47eSEdward Tomasz Napierala 2475481b36c6SSteven Hartland sc->sc_shutdown_pre_eh = EVENTHANDLER_REGISTER(shutdown_pre_sync, 2476481b36c6SSteven Hartland iscsi_shutdown_pre, sc, SHUTDOWN_PRI_FIRST); 2477481b36c6SSteven Hartland /* 2478481b36c6SSteven Hartland * shutdown_post_sync needs to run after filesystem shutdown and before 2479481b36c6SSteven Hartland * CAM shutdown - otherwise when rebooting with an iSCSI session that is 2480481b36c6SSteven Hartland * disconnected but has outstanding requests, dashutdown() will hang on 2481481b36c6SSteven Hartland * cam_periph_runccb(). 2482481b36c6SSteven Hartland */ 2483481b36c6SSteven Hartland sc->sc_shutdown_post_eh = EVENTHANDLER_REGISTER(shutdown_post_sync, 2484481b36c6SSteven Hartland iscsi_shutdown_post, sc, SHUTDOWN_PRI_DEFAULT - 1); 2485009ea47eSEdward Tomasz Napierala 2486009ea47eSEdward Tomasz Napierala return (0); 2487009ea47eSEdward Tomasz Napierala } 2488009ea47eSEdward Tomasz Napierala 2489009ea47eSEdward Tomasz Napierala static int 2490009ea47eSEdward Tomasz Napierala iscsi_unload(void) 2491009ea47eSEdward Tomasz Napierala { 2492009ea47eSEdward Tomasz Napierala 2493a667cf73SEdward Tomasz Napierala if (sc->sc_cdev != NULL) { 2494009ea47eSEdward Tomasz Napierala ISCSI_DEBUG("removing device node"); 2495009ea47eSEdward Tomasz Napierala destroy_dev(sc->sc_cdev); 2496009ea47eSEdward Tomasz Napierala ISCSI_DEBUG("device node removed"); 2497a667cf73SEdward Tomasz Napierala } 2498009ea47eSEdward Tomasz Napierala 2499481b36c6SSteven Hartland if (sc->sc_shutdown_pre_eh != NULL) 2500481b36c6SSteven Hartland EVENTHANDLER_DEREGISTER(shutdown_pre_sync, sc->sc_shutdown_pre_eh); 2501481b36c6SSteven Hartland if (sc->sc_shutdown_post_eh != NULL) 2502481b36c6SSteven Hartland EVENTHANDLER_DEREGISTER(shutdown_post_sync, sc->sc_shutdown_post_eh); 2503009ea47eSEdward Tomasz Napierala 2504481b36c6SSteven Hartland iscsi_terminate_sessions(sc); 2505009ea47eSEdward Tomasz Napierala 2506009ea47eSEdward Tomasz Napierala uma_zdestroy(iscsi_outstanding_zone); 2507009ea47eSEdward Tomasz Napierala sx_destroy(&sc->sc_lock); 2508009ea47eSEdward Tomasz Napierala cv_destroy(&sc->sc_cv); 2509009ea47eSEdward Tomasz Napierala free(sc, M_ISCSI); 2510009ea47eSEdward Tomasz Napierala return (0); 2511009ea47eSEdward Tomasz Napierala } 2512009ea47eSEdward Tomasz Napierala 2513009ea47eSEdward Tomasz Napierala static int 2514009ea47eSEdward Tomasz Napierala iscsi_quiesce(void) 2515009ea47eSEdward Tomasz Napierala { 2516009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 2517009ea47eSEdward Tomasz Napierala if (!TAILQ_EMPTY(&sc->sc_sessions)) { 2518009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 2519009ea47eSEdward Tomasz Napierala return (EBUSY); 2520009ea47eSEdward Tomasz Napierala } 2521009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 2522009ea47eSEdward Tomasz Napierala return (0); 2523009ea47eSEdward Tomasz Napierala } 2524009ea47eSEdward Tomasz Napierala 2525009ea47eSEdward Tomasz Napierala static int 2526009ea47eSEdward Tomasz Napierala iscsi_modevent(module_t mod, int what, void *arg) 2527009ea47eSEdward Tomasz Napierala { 2528009ea47eSEdward Tomasz Napierala int error; 2529009ea47eSEdward Tomasz Napierala 2530009ea47eSEdward Tomasz Napierala switch (what) { 2531009ea47eSEdward Tomasz Napierala case MOD_LOAD: 2532009ea47eSEdward Tomasz Napierala error = iscsi_load(); 2533009ea47eSEdward Tomasz Napierala break; 2534009ea47eSEdward Tomasz Napierala case MOD_UNLOAD: 2535009ea47eSEdward Tomasz Napierala error = iscsi_unload(); 2536009ea47eSEdward Tomasz Napierala break; 2537009ea47eSEdward Tomasz Napierala case MOD_QUIESCE: 2538009ea47eSEdward Tomasz Napierala error = iscsi_quiesce(); 2539009ea47eSEdward Tomasz Napierala break; 2540009ea47eSEdward Tomasz Napierala default: 2541009ea47eSEdward Tomasz Napierala error = EINVAL; 2542009ea47eSEdward Tomasz Napierala break; 2543009ea47eSEdward Tomasz Napierala } 2544009ea47eSEdward Tomasz Napierala return (error); 2545009ea47eSEdward Tomasz Napierala } 2546009ea47eSEdward Tomasz Napierala 2547009ea47eSEdward Tomasz Napierala moduledata_t iscsi_data = { 2548009ea47eSEdward Tomasz Napierala "iscsi", 2549009ea47eSEdward Tomasz Napierala iscsi_modevent, 2550009ea47eSEdward Tomasz Napierala 0 2551009ea47eSEdward Tomasz Napierala }; 2552009ea47eSEdward Tomasz Napierala 2553009ea47eSEdward Tomasz Napierala DECLARE_MODULE(iscsi, iscsi_data, SI_SUB_DRIVERS, SI_ORDER_MIDDLE); 2554009ea47eSEdward Tomasz Napierala MODULE_DEPEND(iscsi, cam, 1, 1, 1); 2555009ea47eSEdward Tomasz Napierala MODULE_DEPEND(iscsi, icl, 1, 1, 1); 2556