1009ea47eSEdward Tomasz Napierala /*- 2009ea47eSEdward Tomasz Napierala * Copyright (c) 2012 The FreeBSD Foundation 3009ea47eSEdward Tomasz Napierala * All rights reserved. 4009ea47eSEdward Tomasz Napierala * 5009ea47eSEdward Tomasz Napierala * This software was developed by Edward Tomasz Napierala under sponsorship 6009ea47eSEdward Tomasz Napierala * from the FreeBSD Foundation. 7009ea47eSEdward Tomasz Napierala * 8009ea47eSEdward Tomasz Napierala * Redistribution and use in source and binary forms, with or without 9009ea47eSEdward Tomasz Napierala * modification, are permitted provided that the following conditions 10009ea47eSEdward Tomasz Napierala * are met: 11009ea47eSEdward Tomasz Napierala * 1. Redistributions of source code must retain the above copyright 12009ea47eSEdward Tomasz Napierala * notice, this list of conditions and the following disclaimer. 13009ea47eSEdward Tomasz Napierala * 2. Redistributions in binary form must reproduce the above copyright 14009ea47eSEdward Tomasz Napierala * notice, this list of conditions and the following disclaimer in the 15009ea47eSEdward Tomasz Napierala * documentation and/or other materials provided with the distribution. 16009ea47eSEdward Tomasz Napierala * 17009ea47eSEdward Tomasz Napierala * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18009ea47eSEdward Tomasz Napierala * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19009ea47eSEdward Tomasz Napierala * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20009ea47eSEdward Tomasz Napierala * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21009ea47eSEdward Tomasz Napierala * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22009ea47eSEdward Tomasz Napierala * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23009ea47eSEdward Tomasz Napierala * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24009ea47eSEdward Tomasz Napierala * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25009ea47eSEdward Tomasz Napierala * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26009ea47eSEdward Tomasz Napierala * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27009ea47eSEdward Tomasz Napierala * SUCH DAMAGE. 28009ea47eSEdward Tomasz Napierala * 29009ea47eSEdward Tomasz Napierala */ 30009ea47eSEdward Tomasz Napierala 31b7a65e39SEdward Tomasz Napierala #include <sys/cdefs.h> 32b7a65e39SEdward Tomasz Napierala __FBSDID("$FreeBSD$"); 33b7a65e39SEdward Tomasz Napierala 34009ea47eSEdward Tomasz Napierala #include <sys/param.h> 35009ea47eSEdward Tomasz Napierala #include <sys/condvar.h> 36009ea47eSEdward Tomasz Napierala #include <sys/conf.h> 37a9f2f291SEdward Tomasz Napierala #include <sys/endian.h> 38009ea47eSEdward Tomasz Napierala #include <sys/eventhandler.h> 39009ea47eSEdward Tomasz Napierala #include <sys/file.h> 40009ea47eSEdward Tomasz Napierala #include <sys/kernel.h> 41009ea47eSEdward Tomasz Napierala #include <sys/kthread.h> 42009ea47eSEdward Tomasz Napierala #include <sys/lock.h> 43009ea47eSEdward Tomasz Napierala #include <sys/malloc.h> 44009ea47eSEdward Tomasz Napierala #include <sys/mutex.h> 45009ea47eSEdward Tomasz Napierala #include <sys/module.h> 46009ea47eSEdward Tomasz Napierala #include <sys/sysctl.h> 47009ea47eSEdward Tomasz Napierala #include <sys/systm.h> 48009ea47eSEdward Tomasz Napierala #include <sys/sx.h> 49009ea47eSEdward Tomasz Napierala #include <vm/uma.h> 50009ea47eSEdward Tomasz Napierala 51009ea47eSEdward Tomasz Napierala #include <cam/cam.h> 52009ea47eSEdward Tomasz Napierala #include <cam/cam_ccb.h> 53009ea47eSEdward Tomasz Napierala #include <cam/cam_xpt.h> 54009ea47eSEdward Tomasz Napierala #include <cam/cam_debug.h> 55009ea47eSEdward Tomasz Napierala #include <cam/cam_sim.h> 56009ea47eSEdward Tomasz Napierala #include <cam/cam_xpt_sim.h> 57009ea47eSEdward Tomasz Napierala #include <cam/cam_xpt_periph.h> 58009ea47eSEdward Tomasz Napierala #include <cam/cam_periph.h> 59009ea47eSEdward Tomasz Napierala #include <cam/scsi/scsi_all.h> 60009ea47eSEdward Tomasz Napierala #include <cam/scsi/scsi_message.h> 61009ea47eSEdward Tomasz Napierala 62ddc5fd90SEdward Tomasz Napierala #include <dev/iscsi/icl.h> 63321b17ecSEdward Tomasz Napierala #include <dev/iscsi/icl_wrappers.h> 64ddc5fd90SEdward Tomasz Napierala #include <dev/iscsi/iscsi_ioctl.h> 65ddc5fd90SEdward Tomasz Napierala #include <dev/iscsi/iscsi_proto.h> 66ddc5fd90SEdward Tomasz Napierala #include <dev/iscsi/iscsi.h> 67009ea47eSEdward Tomasz Napierala 68009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 69009ea47eSEdward Tomasz Napierala #include <sys/socketvar.h> 70009ea47eSEdward Tomasz Napierala #endif 71009ea47eSEdward Tomasz Napierala 722ebde326SEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 732ebde326SEdward Tomasz Napierala FEATURE(iscsi_kernel_proxy, "iSCSI initiator built with ICL_KERNEL_PROXY"); 742ebde326SEdward Tomasz Napierala #endif 752ebde326SEdward Tomasz Napierala 76009ea47eSEdward Tomasz Napierala /* 77009ea47eSEdward Tomasz Napierala * XXX: This is global so the iscsi_unload() can access it. 78009ea47eSEdward Tomasz Napierala * Think about how to do this properly. 79009ea47eSEdward Tomasz Napierala */ 80009ea47eSEdward Tomasz Napierala static struct iscsi_softc *sc; 81009ea47eSEdward Tomasz Napierala 82009ea47eSEdward Tomasz Napierala SYSCTL_NODE(_kern, OID_AUTO, iscsi, CTLFLAG_RD, 0, "iSCSI initiator"); 83009ea47eSEdward Tomasz Napierala static int debug = 1; 84605a34b0SEdward Tomasz Napierala SYSCTL_INT(_kern_iscsi, OID_AUTO, debug, CTLFLAG_RWTUN, 851f6b2af2SAlexander Motin &debug, 0, "Enable debug messages"); 86009ea47eSEdward Tomasz Napierala static int ping_timeout = 5; 87605a34b0SEdward Tomasz Napierala SYSCTL_INT(_kern_iscsi, OID_AUTO, ping_timeout, CTLFLAG_RWTUN, &ping_timeout, 881f6b2af2SAlexander Motin 0, "Timeout for ping (NOP-Out) requests, in seconds"); 89009ea47eSEdward Tomasz Napierala static int iscsid_timeout = 60; 90605a34b0SEdward Tomasz Napierala SYSCTL_INT(_kern_iscsi, OID_AUTO, iscsid_timeout, CTLFLAG_RWTUN, &iscsid_timeout, 911f6b2af2SAlexander Motin 0, "Time to wait for iscsid(8) to handle reconnection, in seconds"); 92009ea47eSEdward Tomasz Napierala static int login_timeout = 60; 93605a34b0SEdward Tomasz Napierala SYSCTL_INT(_kern_iscsi, OID_AUTO, login_timeout, CTLFLAG_RWTUN, &login_timeout, 941f6b2af2SAlexander Motin 0, "Time to wait for iscsid(8) to finish Login Phase, in seconds"); 95009ea47eSEdward Tomasz Napierala static int maxtags = 255; 96605a34b0SEdward Tomasz Napierala SYSCTL_INT(_kern_iscsi, OID_AUTO, maxtags, CTLFLAG_RWTUN, &maxtags, 971f6b2af2SAlexander Motin 0, "Max number of IO requests queued"); 98f1f12e40SEdward Tomasz Napierala static int fail_on_disconnection = 0; 99f1f12e40SEdward Tomasz Napierala SYSCTL_INT(_kern_iscsi, OID_AUTO, fail_on_disconnection, CTLFLAG_RWTUN, 100f1f12e40SEdward Tomasz Napierala &fail_on_disconnection, 0, "Destroy CAM SIM on connection failure"); 101009ea47eSEdward Tomasz Napierala 102009ea47eSEdward Tomasz Napierala static MALLOC_DEFINE(M_ISCSI, "iSCSI", "iSCSI initiator"); 103009ea47eSEdward Tomasz Napierala static uma_zone_t iscsi_outstanding_zone; 104009ea47eSEdward Tomasz Napierala 105009ea47eSEdward Tomasz Napierala #define CONN_SESSION(X) ((struct iscsi_session *)X->ic_prv0) 106009ea47eSEdward Tomasz Napierala #define PDU_SESSION(X) (CONN_SESSION(X->ip_conn)) 107009ea47eSEdward Tomasz Napierala 108009ea47eSEdward Tomasz Napierala #define ISCSI_DEBUG(X, ...) \ 109b1277ad1SEdward Tomasz Napierala do { \ 110b1277ad1SEdward Tomasz Napierala if (debug > 1) \ 111009ea47eSEdward Tomasz Napierala printf("%s: " X "\n", __func__, ## __VA_ARGS__);\ 112009ea47eSEdward Tomasz Napierala } while (0) 113009ea47eSEdward Tomasz Napierala 114009ea47eSEdward Tomasz Napierala #define ISCSI_WARN(X, ...) \ 115b1277ad1SEdward Tomasz Napierala do { \ 116009ea47eSEdward Tomasz Napierala if (debug > 0) { \ 117009ea47eSEdward Tomasz Napierala printf("WARNING: %s: " X "\n", \ 118009ea47eSEdward Tomasz Napierala __func__, ## __VA_ARGS__); \ 119b1277ad1SEdward Tomasz Napierala } \ 120009ea47eSEdward Tomasz Napierala } while (0) 121009ea47eSEdward Tomasz Napierala 122009ea47eSEdward Tomasz Napierala #define ISCSI_SESSION_DEBUG(S, X, ...) \ 123b1277ad1SEdward Tomasz Napierala do { \ 124009ea47eSEdward Tomasz Napierala if (debug > 1) { \ 125009ea47eSEdward Tomasz Napierala printf("%s: %s (%s): " X "\n", \ 126009ea47eSEdward Tomasz Napierala __func__, S->is_conf.isc_target_addr, \ 127009ea47eSEdward Tomasz Napierala S->is_conf.isc_target, ## __VA_ARGS__); \ 128b1277ad1SEdward Tomasz Napierala } \ 129009ea47eSEdward Tomasz Napierala } while (0) 130009ea47eSEdward Tomasz Napierala 131009ea47eSEdward Tomasz Napierala #define ISCSI_SESSION_WARN(S, X, ...) \ 132b1277ad1SEdward Tomasz Napierala do { \ 133009ea47eSEdward Tomasz Napierala if (debug > 0) { \ 134009ea47eSEdward Tomasz Napierala printf("WARNING: %s (%s): " X "\n", \ 135009ea47eSEdward Tomasz Napierala S->is_conf.isc_target_addr, \ 136009ea47eSEdward Tomasz Napierala S->is_conf.isc_target, ## __VA_ARGS__); \ 137b1277ad1SEdward Tomasz Napierala } \ 138009ea47eSEdward Tomasz Napierala } while (0) 139009ea47eSEdward Tomasz Napierala 140009ea47eSEdward Tomasz Napierala #define ISCSI_SESSION_LOCK(X) mtx_lock(&X->is_lock) 141009ea47eSEdward Tomasz Napierala #define ISCSI_SESSION_UNLOCK(X) mtx_unlock(&X->is_lock) 142009ea47eSEdward Tomasz Napierala #define ISCSI_SESSION_LOCK_ASSERT(X) mtx_assert(&X->is_lock, MA_OWNED) 143c215ad3aSAlexander Motin #define ISCSI_SESSION_LOCK_ASSERT_NOT(X) mtx_assert(&X->is_lock, MA_NOTOWNED) 144009ea47eSEdward Tomasz Napierala 145009ea47eSEdward Tomasz Napierala static int iscsi_ioctl(struct cdev *dev, u_long cmd, caddr_t arg, 146009ea47eSEdward Tomasz Napierala int mode, struct thread *td); 147009ea47eSEdward Tomasz Napierala 148009ea47eSEdward Tomasz Napierala static struct cdevsw iscsi_cdevsw = { 149009ea47eSEdward Tomasz Napierala .d_version = D_VERSION, 150009ea47eSEdward Tomasz Napierala .d_ioctl = iscsi_ioctl, 151009ea47eSEdward Tomasz Napierala .d_name = "iscsi", 152009ea47eSEdward Tomasz Napierala }; 153009ea47eSEdward Tomasz Napierala 154009ea47eSEdward Tomasz Napierala static void iscsi_pdu_queue_locked(struct icl_pdu *request); 155009ea47eSEdward Tomasz Napierala static void iscsi_pdu_queue(struct icl_pdu *request); 156009ea47eSEdward Tomasz Napierala static void iscsi_pdu_update_statsn(const struct icl_pdu *response); 157009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_nop_in(struct icl_pdu *response); 158009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_scsi_response(struct icl_pdu *response); 159aa75114cSAlexander Motin static void iscsi_pdu_handle_task_response(struct icl_pdu *response); 160009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_data_in(struct icl_pdu *response); 161009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_logout_response(struct icl_pdu *response); 162009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_r2t(struct icl_pdu *response); 163009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_async_message(struct icl_pdu *response); 164009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_reject(struct icl_pdu *response); 165009ea47eSEdward Tomasz Napierala static void iscsi_session_reconnect(struct iscsi_session *is); 166009ea47eSEdward Tomasz Napierala static void iscsi_session_terminate(struct iscsi_session *is); 167009ea47eSEdward Tomasz Napierala static void iscsi_action(struct cam_sim *sim, union ccb *ccb); 168009ea47eSEdward Tomasz Napierala static void iscsi_poll(struct cam_sim *sim); 169009ea47eSEdward Tomasz Napierala static struct iscsi_outstanding *iscsi_outstanding_find(struct iscsi_session *is, 170009ea47eSEdward Tomasz Napierala uint32_t initiator_task_tag); 171aa75114cSAlexander Motin static struct iscsi_outstanding *iscsi_outstanding_add(struct iscsi_session *is, 172*7a03d007SEdward Tomasz Napierala union ccb *ccb, uint32_t *initiator_task_tagp); 173009ea47eSEdward Tomasz Napierala static void iscsi_outstanding_remove(struct iscsi_session *is, 174009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io); 175009ea47eSEdward Tomasz Napierala 176009ea47eSEdward Tomasz Napierala static bool 177009ea47eSEdward Tomasz Napierala iscsi_pdu_prepare(struct icl_pdu *request) 178009ea47eSEdward Tomasz Napierala { 179009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 180009ea47eSEdward Tomasz Napierala struct iscsi_bhs_scsi_command *bhssc; 181009ea47eSEdward Tomasz Napierala 182009ea47eSEdward Tomasz Napierala is = PDU_SESSION(request); 183009ea47eSEdward Tomasz Napierala 184009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 185009ea47eSEdward Tomasz Napierala 186009ea47eSEdward Tomasz Napierala /* 187009ea47eSEdward Tomasz Napierala * We're only using fields common for all the request 188009ea47eSEdward Tomasz Napierala * (initiator -> target) PDUs. 189009ea47eSEdward Tomasz Napierala */ 190009ea47eSEdward Tomasz Napierala bhssc = (struct iscsi_bhs_scsi_command *)request->ip_bhs; 191009ea47eSEdward Tomasz Napierala 192009ea47eSEdward Tomasz Napierala /* 193009ea47eSEdward Tomasz Napierala * Data-Out PDU does not contain CmdSN. 194009ea47eSEdward Tomasz Napierala */ 195009ea47eSEdward Tomasz Napierala if (bhssc->bhssc_opcode != ISCSI_BHS_OPCODE_SCSI_DATA_OUT) { 1962124e3b0SAlexander Motin if (ISCSI_SNGT(is->is_cmdsn, is->is_maxcmdsn) && 197009ea47eSEdward Tomasz Napierala (bhssc->bhssc_opcode & ISCSI_BHS_OPCODE_IMMEDIATE) == 0) { 198009ea47eSEdward Tomasz Napierala /* 199009ea47eSEdward Tomasz Napierala * Current MaxCmdSN prevents us from sending any more 200009ea47eSEdward Tomasz Napierala * SCSI Command PDUs to the target; postpone the PDU. 201009ea47eSEdward Tomasz Napierala * It will get resent by either iscsi_pdu_queue(), 202009ea47eSEdward Tomasz Napierala * or by maintenance thread. 203009ea47eSEdward Tomasz Napierala */ 204009ea47eSEdward Tomasz Napierala #if 0 2052124e3b0SAlexander Motin ISCSI_SESSION_DEBUG(is, "postponing send, CmdSN %u, " 2062124e3b0SAlexander Motin "ExpCmdSN %u, MaxCmdSN %u, opcode 0x%x", 2072124e3b0SAlexander Motin is->is_cmdsn, is->is_expcmdsn, is->is_maxcmdsn, 2082124e3b0SAlexander Motin bhssc->bhssc_opcode); 209009ea47eSEdward Tomasz Napierala #endif 210009ea47eSEdward Tomasz Napierala return (true); 211009ea47eSEdward Tomasz Napierala } 212009ea47eSEdward Tomasz Napierala bhssc->bhssc_cmdsn = htonl(is->is_cmdsn); 213009ea47eSEdward Tomasz Napierala if ((bhssc->bhssc_opcode & ISCSI_BHS_OPCODE_IMMEDIATE) == 0) 214009ea47eSEdward Tomasz Napierala is->is_cmdsn++; 215009ea47eSEdward Tomasz Napierala } 216009ea47eSEdward Tomasz Napierala bhssc->bhssc_expstatsn = htonl(is->is_statsn + 1); 217009ea47eSEdward Tomasz Napierala 218009ea47eSEdward Tomasz Napierala return (false); 219009ea47eSEdward Tomasz Napierala } 220009ea47eSEdward Tomasz Napierala 221009ea47eSEdward Tomasz Napierala static void 222009ea47eSEdward Tomasz Napierala iscsi_session_send_postponed(struct iscsi_session *is) 223009ea47eSEdward Tomasz Napierala { 224009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 225009ea47eSEdward Tomasz Napierala bool postpone; 226009ea47eSEdward Tomasz Napierala 227009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 228009ea47eSEdward Tomasz Napierala 22916c158a5SEdward Tomasz Napierala while (!STAILQ_EMPTY(&is->is_postponed)) { 23016c158a5SEdward Tomasz Napierala request = STAILQ_FIRST(&is->is_postponed); 231009ea47eSEdward Tomasz Napierala postpone = iscsi_pdu_prepare(request); 232009ea47eSEdward Tomasz Napierala if (postpone) 233009ea47eSEdward Tomasz Napierala break; 23416c158a5SEdward Tomasz Napierala STAILQ_REMOVE_HEAD(&is->is_postponed, ip_next); 235009ea47eSEdward Tomasz Napierala icl_pdu_queue(request); 236009ea47eSEdward Tomasz Napierala } 237009ea47eSEdward Tomasz Napierala } 238009ea47eSEdward Tomasz Napierala 239009ea47eSEdward Tomasz Napierala static void 240009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(struct icl_pdu *request) 241009ea47eSEdward Tomasz Napierala { 242009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 243009ea47eSEdward Tomasz Napierala bool postpone; 244009ea47eSEdward Tomasz Napierala 245009ea47eSEdward Tomasz Napierala is = PDU_SESSION(request); 246009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 247009ea47eSEdward Tomasz Napierala iscsi_session_send_postponed(is); 248009ea47eSEdward Tomasz Napierala postpone = iscsi_pdu_prepare(request); 249009ea47eSEdward Tomasz Napierala if (postpone) { 25016c158a5SEdward Tomasz Napierala STAILQ_INSERT_TAIL(&is->is_postponed, request, ip_next); 251009ea47eSEdward Tomasz Napierala return; 252009ea47eSEdward Tomasz Napierala } 253009ea47eSEdward Tomasz Napierala icl_pdu_queue(request); 254009ea47eSEdward Tomasz Napierala } 255009ea47eSEdward Tomasz Napierala 256009ea47eSEdward Tomasz Napierala static void 257009ea47eSEdward Tomasz Napierala iscsi_pdu_queue(struct icl_pdu *request) 258009ea47eSEdward Tomasz Napierala { 259009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 260009ea47eSEdward Tomasz Napierala 261009ea47eSEdward Tomasz Napierala is = PDU_SESSION(request); 262009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 263009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(request); 264009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 265009ea47eSEdward Tomasz Napierala } 266009ea47eSEdward Tomasz Napierala 267009ea47eSEdward Tomasz Napierala static void 268009ea47eSEdward Tomasz Napierala iscsi_session_logout(struct iscsi_session *is) 269009ea47eSEdward Tomasz Napierala { 270009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 271009ea47eSEdward Tomasz Napierala struct iscsi_bhs_logout_request *bhslr; 272009ea47eSEdward Tomasz Napierala 273d2d52b00SEdward Tomasz Napierala request = icl_pdu_new(is->is_conn, M_NOWAIT); 274009ea47eSEdward Tomasz Napierala if (request == NULL) 275009ea47eSEdward Tomasz Napierala return; 276009ea47eSEdward Tomasz Napierala 277009ea47eSEdward Tomasz Napierala bhslr = (struct iscsi_bhs_logout_request *)request->ip_bhs; 278009ea47eSEdward Tomasz Napierala bhslr->bhslr_opcode = ISCSI_BHS_OPCODE_LOGOUT_REQUEST; 279009ea47eSEdward Tomasz Napierala bhslr->bhslr_reason = BHSLR_REASON_CLOSE_SESSION; 280009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(request); 281009ea47eSEdward Tomasz Napierala } 282009ea47eSEdward Tomasz Napierala 283009ea47eSEdward Tomasz Napierala static void 284aa75114cSAlexander Motin iscsi_session_terminate_task(struct iscsi_session *is, 285aa75114cSAlexander Motin struct iscsi_outstanding *io, bool requeue) 286aa75114cSAlexander Motin { 287aa75114cSAlexander Motin 288aa75114cSAlexander Motin if (io->io_ccb != NULL) { 289aa75114cSAlexander Motin io->io_ccb->ccb_h.status &= ~(CAM_SIM_QUEUED | CAM_STATUS_MASK); 290aa75114cSAlexander Motin if (requeue) 291aa75114cSAlexander Motin io->io_ccb->ccb_h.status |= CAM_REQUEUE_REQ; 292aa75114cSAlexander Motin else 293aa75114cSAlexander Motin io->io_ccb->ccb_h.status |= CAM_REQ_ABORTED; 294aa75114cSAlexander Motin if ((io->io_ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 295aa75114cSAlexander Motin io->io_ccb->ccb_h.status |= CAM_DEV_QFRZN; 296aa75114cSAlexander Motin xpt_freeze_devq(io->io_ccb->ccb_h.path, 1); 297aa75114cSAlexander Motin ISCSI_SESSION_DEBUG(is, "freezing devq"); 298aa75114cSAlexander Motin } 299aa75114cSAlexander Motin xpt_done(io->io_ccb); 300aa75114cSAlexander Motin } 301aa75114cSAlexander Motin iscsi_outstanding_remove(is, io); 302aa75114cSAlexander Motin } 303aa75114cSAlexander Motin 304aa75114cSAlexander Motin static void 305009ea47eSEdward Tomasz Napierala iscsi_session_terminate_tasks(struct iscsi_session *is, bool requeue) 306009ea47eSEdward Tomasz Napierala { 307009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io, *tmp; 308009ea47eSEdward Tomasz Napierala 309009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 310009ea47eSEdward Tomasz Napierala 311009ea47eSEdward Tomasz Napierala TAILQ_FOREACH_SAFE(io, &is->is_outstanding, io_next, tmp) { 312aa75114cSAlexander Motin iscsi_session_terminate_task(is, io, requeue); 313009ea47eSEdward Tomasz Napierala } 314009ea47eSEdward Tomasz Napierala } 315009ea47eSEdward Tomasz Napierala 316009ea47eSEdward Tomasz Napierala static void 317f1f12e40SEdward Tomasz Napierala iscsi_session_cleanup(struct iscsi_session *is, bool destroy_sim) 318009ea47eSEdward Tomasz Napierala { 319009ea47eSEdward Tomasz Napierala struct icl_pdu *pdu; 320009ea47eSEdward Tomasz Napierala 321f1f12e40SEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 322009ea47eSEdward Tomasz Napierala 323009ea47eSEdward Tomasz Napierala /* 324009ea47eSEdward Tomasz Napierala * Don't queue any new PDUs. 325009ea47eSEdward Tomasz Napierala */ 326009ea47eSEdward Tomasz Napierala if (is->is_sim != NULL && is->is_simq_frozen == false) { 327009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing"); 328009ea47eSEdward Tomasz Napierala xpt_freeze_simq(is->is_sim, 1); 329009ea47eSEdward Tomasz Napierala is->is_simq_frozen = true; 330009ea47eSEdward Tomasz Napierala } 331009ea47eSEdward Tomasz Napierala 332009ea47eSEdward Tomasz Napierala /* 333009ea47eSEdward Tomasz Napierala * Remove postponed PDUs. 334009ea47eSEdward Tomasz Napierala */ 33516c158a5SEdward Tomasz Napierala while (!STAILQ_EMPTY(&is->is_postponed)) { 33616c158a5SEdward Tomasz Napierala pdu = STAILQ_FIRST(&is->is_postponed); 33716c158a5SEdward Tomasz Napierala STAILQ_REMOVE_HEAD(&is->is_postponed, ip_next); 338009ea47eSEdward Tomasz Napierala icl_pdu_free(pdu); 339009ea47eSEdward Tomasz Napierala } 340009ea47eSEdward Tomasz Napierala 341f1f12e40SEdward Tomasz Napierala if (destroy_sim == false) { 342009ea47eSEdward Tomasz Napierala /* 343009ea47eSEdward Tomasz Napierala * Terminate SCSI tasks, asking CAM to requeue them. 344009ea47eSEdward Tomasz Napierala */ 345009ea47eSEdward Tomasz Napierala iscsi_session_terminate_tasks(is, true); 346f1f12e40SEdward Tomasz Napierala return; 347f1f12e40SEdward Tomasz Napierala } 348f1f12e40SEdward Tomasz Napierala 349f1f12e40SEdward Tomasz Napierala iscsi_session_terminate_tasks(is, false); 350f1f12e40SEdward Tomasz Napierala 351f1f12e40SEdward Tomasz Napierala if (is->is_sim == NULL) 352f1f12e40SEdward Tomasz Napierala return; 353f1f12e40SEdward Tomasz Napierala 354f1f12e40SEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "deregistering SIM"); 355f1f12e40SEdward Tomasz Napierala xpt_async(AC_LOST_DEVICE, is->is_path, NULL); 356f1f12e40SEdward Tomasz Napierala 357f1f12e40SEdward Tomasz Napierala if (is->is_simq_frozen) { 358f1f12e40SEdward Tomasz Napierala xpt_release_simq(is->is_sim, 1); 359f1f12e40SEdward Tomasz Napierala is->is_simq_frozen = false; 360f1f12e40SEdward Tomasz Napierala } 361f1f12e40SEdward Tomasz Napierala 362f1f12e40SEdward Tomasz Napierala xpt_free_path(is->is_path); 363f1f12e40SEdward Tomasz Napierala is->is_path = NULL; 364f1f12e40SEdward Tomasz Napierala xpt_bus_deregister(cam_sim_path(is->is_sim)); 365f1f12e40SEdward Tomasz Napierala cam_sim_free(is->is_sim, TRUE /*free_devq*/); 366f1f12e40SEdward Tomasz Napierala is->is_sim = NULL; 367f1f12e40SEdward Tomasz Napierala is->is_devq = NULL; 368f1f12e40SEdward Tomasz Napierala } 369f1f12e40SEdward Tomasz Napierala 370f1f12e40SEdward Tomasz Napierala static void 371f1f12e40SEdward Tomasz Napierala iscsi_maintenance_thread_reconnect(struct iscsi_session *is) 372f1f12e40SEdward Tomasz Napierala { 373f1f12e40SEdward Tomasz Napierala 374f1f12e40SEdward Tomasz Napierala icl_conn_close(is->is_conn); 375f1f12e40SEdward Tomasz Napierala 376f1f12e40SEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 377f1f12e40SEdward Tomasz Napierala 378f1f12e40SEdward Tomasz Napierala is->is_connected = false; 379f1f12e40SEdward Tomasz Napierala is->is_reconnecting = false; 380f1f12e40SEdward Tomasz Napierala is->is_login_phase = false; 381f1f12e40SEdward Tomasz Napierala 382f1f12e40SEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 383f1f12e40SEdward Tomasz Napierala if (is->is_login_pdu != NULL) { 384f1f12e40SEdward Tomasz Napierala icl_pdu_free(is->is_login_pdu); 385f1f12e40SEdward Tomasz Napierala is->is_login_pdu = NULL; 386f1f12e40SEdward Tomasz Napierala } 387f1f12e40SEdward Tomasz Napierala cv_signal(&is->is_login_cv); 388f1f12e40SEdward Tomasz Napierala #endif 389f1f12e40SEdward Tomasz Napierala 390f1f12e40SEdward Tomasz Napierala if (fail_on_disconnection) { 391f1f12e40SEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "connection failed, destroying devices"); 392f1f12e40SEdward Tomasz Napierala iscsi_session_cleanup(is, true); 393f1f12e40SEdward Tomasz Napierala } else { 394f1f12e40SEdward Tomasz Napierala iscsi_session_cleanup(is, false); 395f1f12e40SEdward Tomasz Napierala } 396009ea47eSEdward Tomasz Napierala 397009ea47eSEdward Tomasz Napierala KASSERT(TAILQ_EMPTY(&is->is_outstanding), 398009ea47eSEdward Tomasz Napierala ("destroying session with active tasks")); 39916c158a5SEdward Tomasz Napierala KASSERT(STAILQ_EMPTY(&is->is_postponed), 400009ea47eSEdward Tomasz Napierala ("destroying session with postponed PDUs")); 401009ea47eSEdward Tomasz Napierala 402009ea47eSEdward Tomasz Napierala /* 403009ea47eSEdward Tomasz Napierala * Request immediate reconnection from iscsid(8). 404009ea47eSEdward Tomasz Napierala */ 405009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "waking up iscsid(8)"); 406009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = true; 407009ea47eSEdward Tomasz Napierala strlcpy(is->is_reason, "Waiting for iscsid(8)", sizeof(is->is_reason)); 408009ea47eSEdward Tomasz Napierala is->is_timeout = 0; 409009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 410009ea47eSEdward Tomasz Napierala cv_signal(&is->is_softc->sc_cv); 411009ea47eSEdward Tomasz Napierala } 412009ea47eSEdward Tomasz Napierala 413009ea47eSEdward Tomasz Napierala static void 414009ea47eSEdward Tomasz Napierala iscsi_maintenance_thread_terminate(struct iscsi_session *is) 415009ea47eSEdward Tomasz Napierala { 416009ea47eSEdward Tomasz Napierala struct iscsi_softc *sc; 417009ea47eSEdward Tomasz Napierala 418009ea47eSEdward Tomasz Napierala sc = is->is_softc; 419009ea47eSEdward Tomasz Napierala sx_xlock(&sc->sc_lock); 420009ea47eSEdward Tomasz Napierala TAILQ_REMOVE(&sc->sc_sessions, is, is_next); 421009ea47eSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 422009ea47eSEdward Tomasz Napierala 423009ea47eSEdward Tomasz Napierala icl_conn_close(is->is_conn); 424674074daSEdward Tomasz Napierala callout_drain(&is->is_callout); 425009ea47eSEdward Tomasz Napierala 426009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 427009ea47eSEdward Tomasz Napierala 428009ea47eSEdward Tomasz Napierala KASSERT(is->is_terminating, ("is_terminating == false")); 429009ea47eSEdward Tomasz Napierala 430009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 431009ea47eSEdward Tomasz Napierala if (is->is_login_pdu != NULL) { 432009ea47eSEdward Tomasz Napierala icl_pdu_free(is->is_login_pdu); 433009ea47eSEdward Tomasz Napierala is->is_login_pdu = NULL; 434009ea47eSEdward Tomasz Napierala } 435009ea47eSEdward Tomasz Napierala cv_signal(&is->is_login_cv); 436009ea47eSEdward Tomasz Napierala #endif 437009ea47eSEdward Tomasz Napierala 438f1f12e40SEdward Tomasz Napierala iscsi_session_cleanup(is, true); 439009ea47eSEdward Tomasz Napierala 440009ea47eSEdward Tomasz Napierala KASSERT(TAILQ_EMPTY(&is->is_outstanding), 441009ea47eSEdward Tomasz Napierala ("destroying session with active tasks")); 44216c158a5SEdward Tomasz Napierala KASSERT(STAILQ_EMPTY(&is->is_postponed), 443009ea47eSEdward Tomasz Napierala ("destroying session with postponed PDUs")); 444009ea47eSEdward Tomasz Napierala 445009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 446009ea47eSEdward Tomasz Napierala 447009ea47eSEdward Tomasz Napierala icl_conn_free(is->is_conn); 448009ea47eSEdward Tomasz Napierala mtx_destroy(&is->is_lock); 449009ea47eSEdward Tomasz Napierala cv_destroy(&is->is_maintenance_cv); 450009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 451009ea47eSEdward Tomasz Napierala cv_destroy(&is->is_login_cv); 452009ea47eSEdward Tomasz Napierala #endif 453009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "terminated"); 454009ea47eSEdward Tomasz Napierala free(is, M_ISCSI); 455009ea47eSEdward Tomasz Napierala 456009ea47eSEdward Tomasz Napierala /* 457009ea47eSEdward Tomasz Napierala * The iscsi_unload() routine might be waiting. 458009ea47eSEdward Tomasz Napierala */ 459009ea47eSEdward Tomasz Napierala cv_signal(&sc->sc_cv); 460009ea47eSEdward Tomasz Napierala } 461009ea47eSEdward Tomasz Napierala 462009ea47eSEdward Tomasz Napierala static void 463009ea47eSEdward Tomasz Napierala iscsi_maintenance_thread(void *arg) 464009ea47eSEdward Tomasz Napierala { 465009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 466009ea47eSEdward Tomasz Napierala 467009ea47eSEdward Tomasz Napierala is = arg; 468009ea47eSEdward Tomasz Napierala 469009ea47eSEdward Tomasz Napierala for (;;) { 470009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 471009ea47eSEdward Tomasz Napierala if (is->is_reconnecting == false && 472009ea47eSEdward Tomasz Napierala is->is_terminating == false && 47316c158a5SEdward Tomasz Napierala STAILQ_EMPTY(&is->is_postponed)) 474009ea47eSEdward Tomasz Napierala cv_wait(&is->is_maintenance_cv, &is->is_lock); 475009ea47eSEdward Tomasz Napierala 476009ea47eSEdward Tomasz Napierala if (is->is_reconnecting) { 477009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 478009ea47eSEdward Tomasz Napierala iscsi_maintenance_thread_reconnect(is); 479009ea47eSEdward Tomasz Napierala continue; 480009ea47eSEdward Tomasz Napierala } 481009ea47eSEdward Tomasz Napierala 482009ea47eSEdward Tomasz Napierala if (is->is_terminating) { 483009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 484009ea47eSEdward Tomasz Napierala iscsi_maintenance_thread_terminate(is); 485009ea47eSEdward Tomasz Napierala kthread_exit(); 486009ea47eSEdward Tomasz Napierala return; 487009ea47eSEdward Tomasz Napierala } 488009ea47eSEdward Tomasz Napierala 489009ea47eSEdward Tomasz Napierala iscsi_session_send_postponed(is); 490009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 491009ea47eSEdward Tomasz Napierala } 492009ea47eSEdward Tomasz Napierala } 493009ea47eSEdward Tomasz Napierala 494009ea47eSEdward Tomasz Napierala static void 495009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(struct iscsi_session *is) 496009ea47eSEdward Tomasz Napierala { 497009ea47eSEdward Tomasz Napierala 498009ea47eSEdward Tomasz Napierala /* 499009ea47eSEdward Tomasz Napierala * XXX: We can't use locking here, because 500009ea47eSEdward Tomasz Napierala * it's being called from various contexts. 501009ea47eSEdward Tomasz Napierala * Hope it doesn't break anything. 502009ea47eSEdward Tomasz Napierala */ 503009ea47eSEdward Tomasz Napierala if (is->is_reconnecting) 504009ea47eSEdward Tomasz Napierala return; 505009ea47eSEdward Tomasz Napierala 506009ea47eSEdward Tomasz Napierala is->is_reconnecting = true; 507009ea47eSEdward Tomasz Napierala cv_signal(&is->is_maintenance_cv); 508009ea47eSEdward Tomasz Napierala } 509009ea47eSEdward Tomasz Napierala 510009ea47eSEdward Tomasz Napierala static void 511009ea47eSEdward Tomasz Napierala iscsi_session_terminate(struct iscsi_session *is) 512009ea47eSEdward Tomasz Napierala { 513674074daSEdward Tomasz Napierala 514009ea47eSEdward Tomasz Napierala if (is->is_terminating) 515009ea47eSEdward Tomasz Napierala return; 516009ea47eSEdward Tomasz Napierala 517009ea47eSEdward Tomasz Napierala is->is_terminating = true; 518009ea47eSEdward Tomasz Napierala 519009ea47eSEdward Tomasz Napierala #if 0 520009ea47eSEdward Tomasz Napierala iscsi_session_logout(is); 521009ea47eSEdward Tomasz Napierala #endif 522009ea47eSEdward Tomasz Napierala cv_signal(&is->is_maintenance_cv); 523009ea47eSEdward Tomasz Napierala } 524009ea47eSEdward Tomasz Napierala 525009ea47eSEdward Tomasz Napierala static void 526009ea47eSEdward Tomasz Napierala iscsi_callout(void *context) 527009ea47eSEdward Tomasz Napierala { 528009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 529009ea47eSEdward Tomasz Napierala struct iscsi_bhs_nop_out *bhsno; 530009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 531009ea47eSEdward Tomasz Napierala bool reconnect_needed = false; 532009ea47eSEdward Tomasz Napierala 533009ea47eSEdward Tomasz Napierala is = context; 534009ea47eSEdward Tomasz Napierala 535674074daSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 536674074daSEdward Tomasz Napierala if (is->is_terminating) { 537674074daSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 538009ea47eSEdward Tomasz Napierala return; 539674074daSEdward Tomasz Napierala } 540009ea47eSEdward Tomasz Napierala 541009ea47eSEdward Tomasz Napierala callout_schedule(&is->is_callout, 1 * hz); 542009ea47eSEdward Tomasz Napierala 543009ea47eSEdward Tomasz Napierala is->is_timeout++; 544009ea47eSEdward Tomasz Napierala 545009ea47eSEdward Tomasz Napierala if (is->is_waiting_for_iscsid) { 5462c5b89e5SEdward Tomasz Napierala if (iscsid_timeout > 0 && is->is_timeout > iscsid_timeout) { 547009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "timed out waiting for iscsid(8) " 548009ea47eSEdward Tomasz Napierala "for %d seconds; reconnecting", 549009ea47eSEdward Tomasz Napierala is->is_timeout); 550009ea47eSEdward Tomasz Napierala reconnect_needed = true; 551009ea47eSEdward Tomasz Napierala } 552009ea47eSEdward Tomasz Napierala goto out; 553009ea47eSEdward Tomasz Napierala } 554009ea47eSEdward Tomasz Napierala 555009ea47eSEdward Tomasz Napierala if (is->is_login_phase) { 5562c5b89e5SEdward Tomasz Napierala if (login_timeout > 0 && is->is_timeout > login_timeout) { 557009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "login timed out after %d seconds; " 558009ea47eSEdward Tomasz Napierala "reconnecting", is->is_timeout); 559009ea47eSEdward Tomasz Napierala reconnect_needed = true; 560009ea47eSEdward Tomasz Napierala } 561009ea47eSEdward Tomasz Napierala goto out; 562009ea47eSEdward Tomasz Napierala } 563009ea47eSEdward Tomasz Napierala 5642c5b89e5SEdward Tomasz Napierala if (ping_timeout <= 0) { 5652c5b89e5SEdward Tomasz Napierala /* 5662c5b89e5SEdward Tomasz Napierala * Pings are disabled. Don't send NOP-Out in this case. 5672c5b89e5SEdward Tomasz Napierala * Reset the timeout, to avoid triggering reconnection, 5682c5b89e5SEdward Tomasz Napierala * should the user decide to reenable them. 5692c5b89e5SEdward Tomasz Napierala */ 5702c5b89e5SEdward Tomasz Napierala is->is_timeout = 0; 5712c5b89e5SEdward Tomasz Napierala goto out; 5722c5b89e5SEdward Tomasz Napierala } 5732c5b89e5SEdward Tomasz Napierala 574009ea47eSEdward Tomasz Napierala if (is->is_timeout >= ping_timeout) { 575009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "no ping reply (NOP-In) after %d seconds; " 576009ea47eSEdward Tomasz Napierala "reconnecting", ping_timeout); 577009ea47eSEdward Tomasz Napierala reconnect_needed = true; 578009ea47eSEdward Tomasz Napierala goto out; 579009ea47eSEdward Tomasz Napierala } 580009ea47eSEdward Tomasz Napierala 581009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 582009ea47eSEdward Tomasz Napierala 583009ea47eSEdward Tomasz Napierala /* 584009ea47eSEdward Tomasz Napierala * If the ping was reset less than one second ago - which means 585009ea47eSEdward Tomasz Napierala * that we've received some PDU during the last second - assume 586009ea47eSEdward Tomasz Napierala * the traffic flows correctly and don't bother sending a NOP-Out. 587009ea47eSEdward Tomasz Napierala * 588009ea47eSEdward Tomasz Napierala * (It's 2 - one for one second, and one for incrementing is_timeout 589009ea47eSEdward Tomasz Napierala * earlier in this routine.) 590009ea47eSEdward Tomasz Napierala */ 591009ea47eSEdward Tomasz Napierala if (is->is_timeout < 2) 592009ea47eSEdward Tomasz Napierala return; 593009ea47eSEdward Tomasz Napierala 594d2d52b00SEdward Tomasz Napierala request = icl_pdu_new(is->is_conn, M_NOWAIT); 59546aaea89SEdward Tomasz Napierala if (request == NULL) { 59646aaea89SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate PDU"); 59746aaea89SEdward Tomasz Napierala return; 59846aaea89SEdward Tomasz Napierala } 599009ea47eSEdward Tomasz Napierala bhsno = (struct iscsi_bhs_nop_out *)request->ip_bhs; 600009ea47eSEdward Tomasz Napierala bhsno->bhsno_opcode = ISCSI_BHS_OPCODE_NOP_OUT | 601009ea47eSEdward Tomasz Napierala ISCSI_BHS_OPCODE_IMMEDIATE; 602009ea47eSEdward Tomasz Napierala bhsno->bhsno_flags = 0x80; 603009ea47eSEdward Tomasz Napierala bhsno->bhsno_target_transfer_tag = 0xffffffff; 604009ea47eSEdward Tomasz Napierala iscsi_pdu_queue(request); 605009ea47eSEdward Tomasz Napierala return; 606009ea47eSEdward Tomasz Napierala 607009ea47eSEdward Tomasz Napierala out: 608009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 609009ea47eSEdward Tomasz Napierala 610009ea47eSEdward Tomasz Napierala if (reconnect_needed) 611009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 612009ea47eSEdward Tomasz Napierala } 613009ea47eSEdward Tomasz Napierala 614009ea47eSEdward Tomasz Napierala static void 615009ea47eSEdward Tomasz Napierala iscsi_pdu_update_statsn(const struct icl_pdu *response) 616009ea47eSEdward Tomasz Napierala { 617009ea47eSEdward Tomasz Napierala const struct iscsi_bhs_data_in *bhsdi; 618009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 6192124e3b0SAlexander Motin uint32_t expcmdsn, maxcmdsn, statsn; 620009ea47eSEdward Tomasz Napierala 621009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 622009ea47eSEdward Tomasz Napierala 623009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 624009ea47eSEdward Tomasz Napierala 625009ea47eSEdward Tomasz Napierala /* 626009ea47eSEdward Tomasz Napierala * We're only using fields common for all the response 627009ea47eSEdward Tomasz Napierala * (target -> initiator) PDUs. 628009ea47eSEdward Tomasz Napierala */ 629009ea47eSEdward Tomasz Napierala bhsdi = (const struct iscsi_bhs_data_in *)response->ip_bhs; 630009ea47eSEdward Tomasz Napierala /* 631009ea47eSEdward Tomasz Napierala * Ok, I lied. In case of Data-In, "The fields StatSN, Status, 632009ea47eSEdward Tomasz Napierala * and Residual Count only have meaningful content if the S bit 633009ea47eSEdward Tomasz Napierala * is set to 1", so we also need to check the bit specific for 634009ea47eSEdward Tomasz Napierala * Data-In PDU. 635009ea47eSEdward Tomasz Napierala */ 636009ea47eSEdward Tomasz Napierala if (bhsdi->bhsdi_opcode != ISCSI_BHS_OPCODE_SCSI_DATA_IN || 637009ea47eSEdward Tomasz Napierala (bhsdi->bhsdi_flags & BHSDI_FLAGS_S) != 0) { 6382124e3b0SAlexander Motin statsn = ntohl(bhsdi->bhsdi_statsn); 6392124e3b0SAlexander Motin if (statsn != is->is_statsn && statsn != (is->is_statsn + 1)) { 6402124e3b0SAlexander Motin /* XXX: This is normal situation for MCS */ 6412124e3b0SAlexander Motin ISCSI_SESSION_WARN(is, "PDU 0x%x StatSN %u != " 6422124e3b0SAlexander Motin "session ExpStatSN %u (or + 1); reconnecting", 6432124e3b0SAlexander Motin bhsdi->bhsdi_opcode, statsn, is->is_statsn); 6442124e3b0SAlexander Motin iscsi_session_reconnect(is); 645009ea47eSEdward Tomasz Napierala } 6462124e3b0SAlexander Motin if (ISCSI_SNGT(statsn, is->is_statsn)) 6472124e3b0SAlexander Motin is->is_statsn = statsn; 648009ea47eSEdward Tomasz Napierala } 649009ea47eSEdward Tomasz Napierala 650009ea47eSEdward Tomasz Napierala expcmdsn = ntohl(bhsdi->bhsdi_expcmdsn); 651009ea47eSEdward Tomasz Napierala maxcmdsn = ntohl(bhsdi->bhsdi_maxcmdsn); 652009ea47eSEdward Tomasz Napierala 6532124e3b0SAlexander Motin if (ISCSI_SNLT(maxcmdsn + 1, expcmdsn)) { 6542124e3b0SAlexander Motin ISCSI_SESSION_DEBUG(is, 6552124e3b0SAlexander Motin "PDU MaxCmdSN %u + 1 < PDU ExpCmdSN %u; ignoring", 656009ea47eSEdward Tomasz Napierala maxcmdsn, expcmdsn); 657009ea47eSEdward Tomasz Napierala } else { 6582124e3b0SAlexander Motin if (ISCSI_SNGT(maxcmdsn, is->is_maxcmdsn)) { 659009ea47eSEdward Tomasz Napierala is->is_maxcmdsn = maxcmdsn; 660009ea47eSEdward Tomasz Napierala 661009ea47eSEdward Tomasz Napierala /* 662009ea47eSEdward Tomasz Napierala * Command window increased; kick the maintanance thread 663009ea47eSEdward Tomasz Napierala * to send out postponed commands. 664009ea47eSEdward Tomasz Napierala */ 66516c158a5SEdward Tomasz Napierala if (!STAILQ_EMPTY(&is->is_postponed)) 666009ea47eSEdward Tomasz Napierala cv_signal(&is->is_maintenance_cv); 6672124e3b0SAlexander Motin } else if (ISCSI_SNLT(maxcmdsn, is->is_maxcmdsn)) { 6682124e3b0SAlexander Motin /* XXX: This is normal situation for MCS */ 6692124e3b0SAlexander Motin ISCSI_SESSION_DEBUG(is, 6702124e3b0SAlexander Motin "PDU MaxCmdSN %u < session MaxCmdSN %u; ignoring", 671009ea47eSEdward Tomasz Napierala maxcmdsn, is->is_maxcmdsn); 672009ea47eSEdward Tomasz Napierala } 673009ea47eSEdward Tomasz Napierala 6742124e3b0SAlexander Motin if (ISCSI_SNGT(expcmdsn, is->is_expcmdsn)) { 675009ea47eSEdward Tomasz Napierala is->is_expcmdsn = expcmdsn; 6762124e3b0SAlexander Motin } else if (ISCSI_SNLT(expcmdsn, is->is_expcmdsn)) { 6772124e3b0SAlexander Motin /* XXX: This is normal situation for MCS */ 6782124e3b0SAlexander Motin ISCSI_SESSION_DEBUG(is, 6792124e3b0SAlexander Motin "PDU ExpCmdSN %u < session ExpCmdSN %u; ignoring", 680009ea47eSEdward Tomasz Napierala expcmdsn, is->is_expcmdsn); 681009ea47eSEdward Tomasz Napierala } 682009ea47eSEdward Tomasz Napierala } 683009ea47eSEdward Tomasz Napierala 684009ea47eSEdward Tomasz Napierala /* 685009ea47eSEdward Tomasz Napierala * Every incoming PDU - not just NOP-In - resets the ping timer. 686009ea47eSEdward Tomasz Napierala * The purpose of the timeout is to reset the connection when it stalls; 687009ea47eSEdward Tomasz Napierala * we don't want this to happen when NOP-In or NOP-Out ends up delayed 688009ea47eSEdward Tomasz Napierala * in some queue. 689009ea47eSEdward Tomasz Napierala */ 690009ea47eSEdward Tomasz Napierala is->is_timeout = 0; 691009ea47eSEdward Tomasz Napierala } 692009ea47eSEdward Tomasz Napierala 693009ea47eSEdward Tomasz Napierala static void 694009ea47eSEdward Tomasz Napierala iscsi_receive_callback(struct icl_pdu *response) 695009ea47eSEdward Tomasz Napierala { 696009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 697009ea47eSEdward Tomasz Napierala 698009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 699009ea47eSEdward Tomasz Napierala 700009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 701009ea47eSEdward Tomasz Napierala 702009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 703009ea47eSEdward Tomasz Napierala if (is->is_login_phase) { 704009ea47eSEdward Tomasz Napierala if (is->is_login_pdu == NULL) 705009ea47eSEdward Tomasz Napierala is->is_login_pdu = response; 706009ea47eSEdward Tomasz Napierala else 707009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 708009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 709009ea47eSEdward Tomasz Napierala cv_signal(&is->is_login_cv); 710009ea47eSEdward Tomasz Napierala return; 711009ea47eSEdward Tomasz Napierala } 712009ea47eSEdward Tomasz Napierala #endif 713009ea47eSEdward Tomasz Napierala 714009ea47eSEdward Tomasz Napierala iscsi_pdu_update_statsn(response); 715009ea47eSEdward Tomasz Napierala 716009ea47eSEdward Tomasz Napierala /* 717009ea47eSEdward Tomasz Napierala * The handling routine is responsible for freeing the PDU 718009ea47eSEdward Tomasz Napierala * when it's no longer needed. 719009ea47eSEdward Tomasz Napierala */ 720009ea47eSEdward Tomasz Napierala switch (response->ip_bhs->bhs_opcode) { 721009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_NOP_IN: 722009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_nop_in(response); 723c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 724009ea47eSEdward Tomasz Napierala break; 725009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_SCSI_RESPONSE: 726009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_scsi_response(response); 727c215ad3aSAlexander Motin /* Session lock dropped inside. */ 728c215ad3aSAlexander Motin ISCSI_SESSION_LOCK_ASSERT_NOT(is); 729009ea47eSEdward Tomasz Napierala break; 730aa75114cSAlexander Motin case ISCSI_BHS_OPCODE_TASK_RESPONSE: 731aa75114cSAlexander Motin iscsi_pdu_handle_task_response(response); 732c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 733aa75114cSAlexander Motin break; 734009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_SCSI_DATA_IN: 735009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_data_in(response); 736c215ad3aSAlexander Motin /* Session lock dropped inside. */ 737c215ad3aSAlexander Motin ISCSI_SESSION_LOCK_ASSERT_NOT(is); 738009ea47eSEdward Tomasz Napierala break; 739009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_LOGOUT_RESPONSE: 740009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_logout_response(response); 741c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 742009ea47eSEdward Tomasz Napierala break; 743009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_R2T: 744009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_r2t(response); 745c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 746009ea47eSEdward Tomasz Napierala break; 747009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_ASYNC_MESSAGE: 748009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_async_message(response); 749c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 750009ea47eSEdward Tomasz Napierala break; 751009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_REJECT: 752009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_reject(response); 753c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 754009ea47eSEdward Tomasz Napierala break; 755009ea47eSEdward Tomasz Napierala default: 756009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "received PDU with unsupported " 757009ea47eSEdward Tomasz Napierala "opcode 0x%x; reconnecting", 758009ea47eSEdward Tomasz Napierala response->ip_bhs->bhs_opcode); 759009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 760c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 761009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 762009ea47eSEdward Tomasz Napierala } 763009ea47eSEdward Tomasz Napierala } 764009ea47eSEdward Tomasz Napierala 765009ea47eSEdward Tomasz Napierala static void 766009ea47eSEdward Tomasz Napierala iscsi_error_callback(struct icl_conn *ic) 767009ea47eSEdward Tomasz Napierala { 768009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 769009ea47eSEdward Tomasz Napierala 770009ea47eSEdward Tomasz Napierala is = CONN_SESSION(ic); 771009ea47eSEdward Tomasz Napierala 772009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "connection error; reconnecting"); 773009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 774009ea47eSEdward Tomasz Napierala } 775009ea47eSEdward Tomasz Napierala 776009ea47eSEdward Tomasz Napierala static void 777009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_nop_in(struct icl_pdu *response) 778009ea47eSEdward Tomasz Napierala { 7791008ac5eSEdward Tomasz Napierala struct iscsi_session *is; 780009ea47eSEdward Tomasz Napierala struct iscsi_bhs_nop_out *bhsno; 781009ea47eSEdward Tomasz Napierala struct iscsi_bhs_nop_in *bhsni; 782009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 7831008ac5eSEdward Tomasz Napierala void *data = NULL; 7841008ac5eSEdward Tomasz Napierala size_t datasize; 7851008ac5eSEdward Tomasz Napierala int error; 786009ea47eSEdward Tomasz Napierala 7871008ac5eSEdward Tomasz Napierala is = PDU_SESSION(response); 788009ea47eSEdward Tomasz Napierala bhsni = (struct iscsi_bhs_nop_in *)response->ip_bhs; 789009ea47eSEdward Tomasz Napierala 790009ea47eSEdward Tomasz Napierala if (bhsni->bhsni_target_transfer_tag == 0xffffffff) { 791009ea47eSEdward Tomasz Napierala /* 792009ea47eSEdward Tomasz Napierala * Nothing to do; iscsi_pdu_update_statsn() already 793009ea47eSEdward Tomasz Napierala * zeroed the timeout. 794009ea47eSEdward Tomasz Napierala */ 795009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 796009ea47eSEdward Tomasz Napierala return; 797009ea47eSEdward Tomasz Napierala } 798009ea47eSEdward Tomasz Napierala 7991008ac5eSEdward Tomasz Napierala datasize = icl_pdu_data_segment_length(response); 8001008ac5eSEdward Tomasz Napierala if (datasize > 0) { 8011008ac5eSEdward Tomasz Napierala data = malloc(datasize, M_ISCSI, M_NOWAIT | M_ZERO); 8021008ac5eSEdward Tomasz Napierala if (data == NULL) { 8031008ac5eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate memory; " 8041008ac5eSEdward Tomasz Napierala "reconnecting"); 8051008ac5eSEdward Tomasz Napierala icl_pdu_free(response); 8061008ac5eSEdward Tomasz Napierala iscsi_session_reconnect(is); 8071008ac5eSEdward Tomasz Napierala return; 8081008ac5eSEdward Tomasz Napierala } 8091008ac5eSEdward Tomasz Napierala icl_pdu_get_data(response, 0, data, datasize); 8101008ac5eSEdward Tomasz Napierala } 8111008ac5eSEdward Tomasz Napierala 812d2d52b00SEdward Tomasz Napierala request = icl_pdu_new(response->ip_conn, M_NOWAIT); 813009ea47eSEdward Tomasz Napierala if (request == NULL) { 8141008ac5eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate memory; " 8151008ac5eSEdward Tomasz Napierala "reconnecting"); 8161008ac5eSEdward Tomasz Napierala free(data, M_ISCSI); 817009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 8181008ac5eSEdward Tomasz Napierala iscsi_session_reconnect(is); 819009ea47eSEdward Tomasz Napierala return; 820009ea47eSEdward Tomasz Napierala } 821009ea47eSEdward Tomasz Napierala bhsno = (struct iscsi_bhs_nop_out *)request->ip_bhs; 822009ea47eSEdward Tomasz Napierala bhsno->bhsno_opcode = ISCSI_BHS_OPCODE_NOP_OUT | 823009ea47eSEdward Tomasz Napierala ISCSI_BHS_OPCODE_IMMEDIATE; 824009ea47eSEdward Tomasz Napierala bhsno->bhsno_flags = 0x80; 8251008ac5eSEdward Tomasz Napierala bhsno->bhsno_initiator_task_tag = 0xffffffff; 826009ea47eSEdward Tomasz Napierala bhsno->bhsno_target_transfer_tag = bhsni->bhsni_target_transfer_tag; 8271008ac5eSEdward Tomasz Napierala if (datasize > 0) { 8281008ac5eSEdward Tomasz Napierala error = icl_pdu_append_data(request, data, datasize, M_NOWAIT); 8291008ac5eSEdward Tomasz Napierala if (error != 0) { 8301008ac5eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate memory; " 8311008ac5eSEdward Tomasz Napierala "reconnecting"); 8321008ac5eSEdward Tomasz Napierala free(data, M_ISCSI); 8331008ac5eSEdward Tomasz Napierala icl_pdu_free(request); 8341008ac5eSEdward Tomasz Napierala icl_pdu_free(response); 8351008ac5eSEdward Tomasz Napierala iscsi_session_reconnect(is); 8361008ac5eSEdward Tomasz Napierala return; 8371008ac5eSEdward Tomasz Napierala } 8381008ac5eSEdward Tomasz Napierala free(data, M_ISCSI); 8391008ac5eSEdward Tomasz Napierala } 840009ea47eSEdward Tomasz Napierala 841009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 842009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(request); 843009ea47eSEdward Tomasz Napierala } 844009ea47eSEdward Tomasz Napierala 845009ea47eSEdward Tomasz Napierala static void 846009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_scsi_response(struct icl_pdu *response) 847009ea47eSEdward Tomasz Napierala { 848009ea47eSEdward Tomasz Napierala struct iscsi_bhs_scsi_response *bhssr; 849009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io; 850009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 85173e2e95dSAlexander Motin union ccb *ccb; 852009ea47eSEdward Tomasz Napierala struct ccb_scsiio *csio; 85373e2e95dSAlexander Motin size_t data_segment_len, received; 854009ea47eSEdward Tomasz Napierala uint16_t sense_len; 855009ea47eSEdward Tomasz Napierala 856009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 857009ea47eSEdward Tomasz Napierala 858009ea47eSEdward Tomasz Napierala bhssr = (struct iscsi_bhs_scsi_response *)response->ip_bhs; 859009ea47eSEdward Tomasz Napierala io = iscsi_outstanding_find(is, bhssr->bhssr_initiator_task_tag); 860aa75114cSAlexander Motin if (io == NULL || io->io_ccb == NULL) { 861009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "bad itt 0x%x", bhssr->bhssr_initiator_task_tag); 862009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 863009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 864c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 865009ea47eSEdward Tomasz Napierala return; 866009ea47eSEdward Tomasz Napierala } 867009ea47eSEdward Tomasz Napierala 86873e2e95dSAlexander Motin ccb = io->io_ccb; 86973e2e95dSAlexander Motin received = io->io_received; 870c215ad3aSAlexander Motin iscsi_outstanding_remove(is, io); 871c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 872c215ad3aSAlexander Motin 873009ea47eSEdward Tomasz Napierala if (bhssr->bhssr_response != BHSSR_RESPONSE_COMMAND_COMPLETED) { 874009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "service response 0x%x", bhssr->bhssr_response); 87573e2e95dSAlexander Motin if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 87673e2e95dSAlexander Motin xpt_freeze_devq(ccb->ccb_h.path, 1); 877009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 878009ea47eSEdward Tomasz Napierala } 87973e2e95dSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP_ERR | CAM_DEV_QFRZN; 880009ea47eSEdward Tomasz Napierala } else if (bhssr->bhssr_status == 0) { 88173e2e95dSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP; 882009ea47eSEdward Tomasz Napierala } else { 88373e2e95dSAlexander Motin if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 88473e2e95dSAlexander Motin xpt_freeze_devq(ccb->ccb_h.path, 1); 885009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 886009ea47eSEdward Tomasz Napierala } 88773e2e95dSAlexander Motin ccb->ccb_h.status = CAM_SCSI_STATUS_ERROR | CAM_DEV_QFRZN; 88873e2e95dSAlexander Motin ccb->csio.scsi_status = bhssr->bhssr_status; 889009ea47eSEdward Tomasz Napierala } 890009ea47eSEdward Tomasz Napierala 89173e2e95dSAlexander Motin csio = &ccb->csio; 892009ea47eSEdward Tomasz Napierala data_segment_len = icl_pdu_data_segment_length(response); 893009ea47eSEdward Tomasz Napierala if (data_segment_len > 0) { 894009ea47eSEdward Tomasz Napierala if (data_segment_len < sizeof(sense_len)) { 895009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "truncated data segment (%zd bytes)", 896009ea47eSEdward Tomasz Napierala data_segment_len); 89773e2e95dSAlexander Motin if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 89873e2e95dSAlexander Motin xpt_freeze_devq(ccb->ccb_h.path, 1); 899009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 900009ea47eSEdward Tomasz Napierala } 90173e2e95dSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP_ERR | CAM_DEV_QFRZN; 902009ea47eSEdward Tomasz Napierala goto out; 903009ea47eSEdward Tomasz Napierala } 904009ea47eSEdward Tomasz Napierala icl_pdu_get_data(response, 0, &sense_len, sizeof(sense_len)); 905009ea47eSEdward Tomasz Napierala sense_len = ntohs(sense_len); 906009ea47eSEdward Tomasz Napierala #if 0 907009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "sense_len %d, data len %zd", 908009ea47eSEdward Tomasz Napierala sense_len, data_segment_len); 909009ea47eSEdward Tomasz Napierala #endif 910009ea47eSEdward Tomasz Napierala if (sizeof(sense_len) + sense_len > data_segment_len) { 911009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "truncated data segment " 912009ea47eSEdward Tomasz Napierala "(%zd bytes, should be %zd)", 913009ea47eSEdward Tomasz Napierala data_segment_len, sizeof(sense_len) + sense_len); 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 goto out; 920009ea47eSEdward Tomasz Napierala } else if (sizeof(sense_len) + sense_len < data_segment_len) 921009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "oversize data segment " 922009ea47eSEdward Tomasz Napierala "(%zd bytes, should be %zd)", 923009ea47eSEdward Tomasz Napierala data_segment_len, sizeof(sense_len) + sense_len); 924009ea47eSEdward Tomasz Napierala if (sense_len > csio->sense_len) { 925009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "truncating sense from %d to %d", 926009ea47eSEdward Tomasz Napierala sense_len, csio->sense_len); 927009ea47eSEdward Tomasz Napierala sense_len = csio->sense_len; 928009ea47eSEdward Tomasz Napierala } 929009ea47eSEdward Tomasz Napierala icl_pdu_get_data(response, sizeof(sense_len), &csio->sense_data, sense_len); 930009ea47eSEdward Tomasz Napierala csio->sense_resid = csio->sense_len - sense_len; 93173e2e95dSAlexander Motin ccb->ccb_h.status |= CAM_AUTOSNS_VALID; 932009ea47eSEdward Tomasz Napierala } 933009ea47eSEdward Tomasz Napierala 934009ea47eSEdward Tomasz Napierala out: 935009ea47eSEdward Tomasz Napierala if (bhssr->bhssr_flags & BHSSR_FLAGS_RESIDUAL_UNDERFLOW) 936009ea47eSEdward Tomasz Napierala csio->resid = ntohl(bhssr->bhssr_residual_count); 937009ea47eSEdward Tomasz Napierala 938009ea47eSEdward Tomasz Napierala if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) { 93973e2e95dSAlexander Motin KASSERT(received <= csio->dxfer_len, 94073e2e95dSAlexander Motin ("received > csio->dxfer_len")); 94173e2e95dSAlexander Motin if (received < csio->dxfer_len) { 94273e2e95dSAlexander Motin if (csio->resid != csio->dxfer_len - received) { 943009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "underflow mismatch: " 944009ea47eSEdward Tomasz Napierala "target indicates %d, we calculated %zd", 94573e2e95dSAlexander Motin csio->resid, csio->dxfer_len - received); 946009ea47eSEdward Tomasz Napierala } 94773e2e95dSAlexander Motin csio->resid = csio->dxfer_len - received; 948009ea47eSEdward Tomasz Napierala } 949009ea47eSEdward Tomasz Napierala } 950009ea47eSEdward Tomasz Napierala 95173e2e95dSAlexander Motin xpt_done(ccb); 952009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 953009ea47eSEdward Tomasz Napierala } 954009ea47eSEdward Tomasz Napierala 955009ea47eSEdward Tomasz Napierala static void 956aa75114cSAlexander Motin iscsi_pdu_handle_task_response(struct icl_pdu *response) 957aa75114cSAlexander Motin { 958aa75114cSAlexander Motin struct iscsi_bhs_task_management_response *bhstmr; 959aa75114cSAlexander Motin struct iscsi_outstanding *io, *aio; 960aa75114cSAlexander Motin struct iscsi_session *is; 961aa75114cSAlexander Motin 962aa75114cSAlexander Motin is = PDU_SESSION(response); 963aa75114cSAlexander Motin 964aa75114cSAlexander Motin bhstmr = (struct iscsi_bhs_task_management_response *)response->ip_bhs; 965aa75114cSAlexander Motin io = iscsi_outstanding_find(is, bhstmr->bhstmr_initiator_task_tag); 966aa75114cSAlexander Motin if (io == NULL || io->io_ccb != NULL) { 967aa75114cSAlexander Motin ISCSI_SESSION_WARN(is, "bad itt 0x%x", 968aa75114cSAlexander Motin bhstmr->bhstmr_initiator_task_tag); 969aa75114cSAlexander Motin icl_pdu_free(response); 970aa75114cSAlexander Motin iscsi_session_reconnect(is); 971aa75114cSAlexander Motin return; 972aa75114cSAlexander Motin } 973aa75114cSAlexander Motin 974aa75114cSAlexander Motin if (bhstmr->bhstmr_response != BHSTMR_RESPONSE_FUNCTION_COMPLETE) { 975aa75114cSAlexander Motin ISCSI_SESSION_WARN(is, "task response 0x%x", 976aa75114cSAlexander Motin bhstmr->bhstmr_response); 977aa75114cSAlexander Motin } else { 978aa75114cSAlexander Motin aio = iscsi_outstanding_find(is, io->io_datasn); 979aa75114cSAlexander Motin if (aio != NULL && aio->io_ccb != NULL) 980aa75114cSAlexander Motin iscsi_session_terminate_task(is, aio, false); 981aa75114cSAlexander Motin } 982aa75114cSAlexander Motin 983aa75114cSAlexander Motin iscsi_outstanding_remove(is, io); 984aa75114cSAlexander Motin icl_pdu_free(response); 985aa75114cSAlexander Motin } 986aa75114cSAlexander Motin 987aa75114cSAlexander Motin static void 988009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_data_in(struct icl_pdu *response) 989009ea47eSEdward Tomasz Napierala { 990009ea47eSEdward Tomasz Napierala struct iscsi_bhs_data_in *bhsdi; 991009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io; 992009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 99373e2e95dSAlexander Motin union ccb *ccb; 994009ea47eSEdward Tomasz Napierala struct ccb_scsiio *csio; 99573e2e95dSAlexander Motin size_t data_segment_len, received, oreceived; 996009ea47eSEdward Tomasz Napierala 997009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 998009ea47eSEdward Tomasz Napierala bhsdi = (struct iscsi_bhs_data_in *)response->ip_bhs; 999009ea47eSEdward Tomasz Napierala io = iscsi_outstanding_find(is, bhsdi->bhsdi_initiator_task_tag); 1000aa75114cSAlexander Motin if (io == NULL || io->io_ccb == NULL) { 1001009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "bad itt 0x%x", bhsdi->bhsdi_initiator_task_tag); 1002009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1003009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1004c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 1005009ea47eSEdward Tomasz Napierala return; 1006009ea47eSEdward Tomasz Napierala } 1007009ea47eSEdward Tomasz Napierala 1008009ea47eSEdward Tomasz Napierala data_segment_len = icl_pdu_data_segment_length(response); 1009009ea47eSEdward Tomasz Napierala if (data_segment_len == 0) { 1010009ea47eSEdward Tomasz Napierala /* 1011009ea47eSEdward Tomasz Napierala * "The sending of 0 length data segments should be avoided, 1012009ea47eSEdward Tomasz Napierala * but initiators and targets MUST be able to properly receive 1013009ea47eSEdward Tomasz Napierala * 0 length data segments." 1014009ea47eSEdward Tomasz Napierala */ 1015c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 1016009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1017009ea47eSEdward Tomasz Napierala return; 1018009ea47eSEdward Tomasz Napierala } 1019009ea47eSEdward Tomasz Napierala 1020009ea47eSEdward Tomasz Napierala /* 1021009ea47eSEdward Tomasz Napierala * We need to track this for security reasons - without it, malicious target 1022009ea47eSEdward Tomasz Napierala * could respond to SCSI READ without sending Data-In PDUs, which would result 1023009ea47eSEdward Tomasz Napierala * in read operation on the initiator side returning random kernel data. 1024009ea47eSEdward Tomasz Napierala */ 1025009ea47eSEdward Tomasz Napierala if (ntohl(bhsdi->bhsdi_buffer_offset) != io->io_received) { 1026009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "data out of order; expected offset %zd, got %zd", 1027009ea47eSEdward Tomasz Napierala io->io_received, (size_t)ntohl(bhsdi->bhsdi_buffer_offset)); 1028009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1029009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1030c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 1031009ea47eSEdward Tomasz Napierala return; 1032009ea47eSEdward Tomasz Napierala } 1033009ea47eSEdward Tomasz Napierala 103473e2e95dSAlexander Motin ccb = io->io_ccb; 103573e2e95dSAlexander Motin csio = &ccb->csio; 1036009ea47eSEdward Tomasz Napierala 1037d43c9ec1SEdward Tomasz Napierala if (io->io_received + data_segment_len > csio->dxfer_len) { 1038009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "oversize data segment (%zd bytes " 1039d43c9ec1SEdward Tomasz Napierala "at offset %zd, buffer is %d)", 1040d43c9ec1SEdward Tomasz Napierala data_segment_len, io->io_received, csio->dxfer_len); 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 104773e2e95dSAlexander Motin oreceived = io->io_received; 1048009ea47eSEdward Tomasz Napierala io->io_received += data_segment_len; 104973e2e95dSAlexander Motin received = io->io_received; 1050c215ad3aSAlexander Motin if ((bhsdi->bhsdi_flags & BHSDI_FLAGS_S) != 0) 1051c215ad3aSAlexander Motin iscsi_outstanding_remove(is, io); 1052c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 1053c215ad3aSAlexander Motin 105473e2e95dSAlexander Motin icl_pdu_get_data(response, 0, csio->data_ptr + oreceived, data_segment_len); 1055009ea47eSEdward Tomasz Napierala 1056009ea47eSEdward Tomasz Napierala /* 1057009ea47eSEdward Tomasz Napierala * XXX: Check DataSN. 1058009ea47eSEdward Tomasz Napierala * XXX: Check F. 1059009ea47eSEdward Tomasz Napierala */ 106069647b7bSEdward Tomasz Napierala if ((bhsdi->bhsdi_flags & BHSDI_FLAGS_S) == 0) { 106169647b7bSEdward Tomasz Napierala /* 106269647b7bSEdward Tomasz Napierala * Nothing more to do. 106369647b7bSEdward Tomasz Napierala */ 106469647b7bSEdward Tomasz Napierala icl_pdu_free(response); 106569647b7bSEdward Tomasz Napierala return; 106669647b7bSEdward Tomasz Napierala } 106769647b7bSEdward Tomasz Napierala 1068009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "got S flag; status 0x%x", bhsdi->bhsdi_status); 1069009ea47eSEdward Tomasz Napierala if (bhsdi->bhsdi_status == 0) { 107073e2e95dSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP; 1071009ea47eSEdward Tomasz Napierala } else { 107273e2e95dSAlexander Motin if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 107373e2e95dSAlexander Motin xpt_freeze_devq(ccb->ccb_h.path, 1); 1074009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 1075009ea47eSEdward Tomasz Napierala } 107673e2e95dSAlexander Motin ccb->ccb_h.status = CAM_SCSI_STATUS_ERROR | CAM_DEV_QFRZN; 1077009ea47eSEdward Tomasz Napierala csio->scsi_status = bhsdi->bhsdi_status; 1078009ea47eSEdward Tomasz Napierala } 107969647b7bSEdward Tomasz Napierala 108069647b7bSEdward Tomasz Napierala if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) { 108173e2e95dSAlexander Motin KASSERT(received <= csio->dxfer_len, 108273e2e95dSAlexander Motin ("received > csio->dxfer_len")); 108373e2e95dSAlexander Motin if (received < csio->dxfer_len) { 108469647b7bSEdward Tomasz Napierala csio->resid = ntohl(bhsdi->bhsdi_residual_count); 108573e2e95dSAlexander Motin if (csio->resid != csio->dxfer_len - received) { 108669647b7bSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "underflow mismatch: " 108769647b7bSEdward Tomasz Napierala "target indicates %d, we calculated %zd", 108873e2e95dSAlexander Motin csio->resid, csio->dxfer_len - received); 108969647b7bSEdward Tomasz Napierala } 109073e2e95dSAlexander Motin csio->resid = csio->dxfer_len - received; 109169647b7bSEdward Tomasz Napierala } 1092009ea47eSEdward Tomasz Napierala } 1093009ea47eSEdward Tomasz Napierala 109473e2e95dSAlexander Motin xpt_done(ccb); 1095009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1096009ea47eSEdward Tomasz Napierala } 1097009ea47eSEdward Tomasz Napierala 1098009ea47eSEdward Tomasz Napierala static void 1099009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_logout_response(struct icl_pdu *response) 1100009ea47eSEdward Tomasz Napierala { 1101009ea47eSEdward Tomasz Napierala 1102009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(PDU_SESSION(response), "logout response"); 1103009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1104009ea47eSEdward Tomasz Napierala } 1105009ea47eSEdward Tomasz Napierala 1106009ea47eSEdward Tomasz Napierala static void 1107009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_r2t(struct icl_pdu *response) 1108009ea47eSEdward Tomasz Napierala { 1109009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 1110009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1111009ea47eSEdward Tomasz Napierala struct iscsi_bhs_r2t *bhsr2t; 1112009ea47eSEdward Tomasz Napierala struct iscsi_bhs_data_out *bhsdo; 1113009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io; 1114009ea47eSEdward Tomasz Napierala struct ccb_scsiio *csio; 1115009ea47eSEdward Tomasz Napierala size_t off, len, total_len; 1116009ea47eSEdward Tomasz Napierala int error; 1117009ea47eSEdward Tomasz Napierala 1118009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 1119009ea47eSEdward Tomasz Napierala 1120009ea47eSEdward Tomasz Napierala bhsr2t = (struct iscsi_bhs_r2t *)response->ip_bhs; 1121009ea47eSEdward Tomasz Napierala io = iscsi_outstanding_find(is, bhsr2t->bhsr2t_initiator_task_tag); 1122aa75114cSAlexander Motin if (io == NULL || io->io_ccb == NULL) { 1123009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "bad itt 0x%x; reconnecting", 1124009ea47eSEdward Tomasz Napierala bhsr2t->bhsr2t_initiator_task_tag); 1125009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1126009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1127009ea47eSEdward Tomasz Napierala return; 1128009ea47eSEdward Tomasz Napierala } 1129009ea47eSEdward Tomasz Napierala 1130009ea47eSEdward Tomasz Napierala csio = &io->io_ccb->csio; 1131009ea47eSEdward Tomasz Napierala 1132009ea47eSEdward Tomasz Napierala if ((csio->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_OUT) { 1133009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "received R2T for read command; reconnecting"); 1134009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1135009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1136009ea47eSEdward Tomasz Napierala return; 1137009ea47eSEdward Tomasz Napierala } 1138009ea47eSEdward Tomasz Napierala 1139009ea47eSEdward Tomasz Napierala /* 1140009ea47eSEdward Tomasz Napierala * XXX: Verify R2TSN. 1141009ea47eSEdward Tomasz Napierala */ 1142009ea47eSEdward Tomasz Napierala 1143009ea47eSEdward Tomasz Napierala io->io_datasn = 0; 1144d43c9ec1SEdward Tomasz Napierala 1145009ea47eSEdward Tomasz Napierala off = ntohl(bhsr2t->bhsr2t_buffer_offset); 1146d43c9ec1SEdward Tomasz Napierala if (off > csio->dxfer_len) { 1147d43c9ec1SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target requested invalid offset " 1148d43c9ec1SEdward Tomasz Napierala "%zd, buffer is is %d; reconnecting", off, csio->dxfer_len); 1149d43c9ec1SEdward Tomasz Napierala icl_pdu_free(response); 1150d43c9ec1SEdward Tomasz Napierala iscsi_session_reconnect(is); 1151d43c9ec1SEdward Tomasz Napierala return; 1152d43c9ec1SEdward Tomasz Napierala } 1153d43c9ec1SEdward Tomasz Napierala 1154009ea47eSEdward Tomasz Napierala total_len = ntohl(bhsr2t->bhsr2t_desired_data_transfer_length); 1155d43c9ec1SEdward Tomasz Napierala if (total_len == 0 || total_len > csio->dxfer_len) { 1156d43c9ec1SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target requested invalid length " 1157d43c9ec1SEdward Tomasz Napierala "%zd, buffer is %d; reconnecting", total_len, csio->dxfer_len); 1158d43c9ec1SEdward Tomasz Napierala icl_pdu_free(response); 1159d43c9ec1SEdward Tomasz Napierala iscsi_session_reconnect(is); 1160d43c9ec1SEdward Tomasz Napierala return; 1161d43c9ec1SEdward Tomasz Napierala } 1162009ea47eSEdward Tomasz Napierala 1163009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "r2t; off %zd, len %zd", off, total_len); 1164009ea47eSEdward Tomasz Napierala 1165009ea47eSEdward Tomasz Napierala for (;;) { 1166009ea47eSEdward Tomasz Napierala len = total_len; 1167009ea47eSEdward Tomasz Napierala 1168009ea47eSEdward Tomasz Napierala if (len > is->is_max_data_segment_length) 1169009ea47eSEdward Tomasz Napierala len = is->is_max_data_segment_length; 1170009ea47eSEdward Tomasz Napierala 1171009ea47eSEdward Tomasz Napierala if (off + len > csio->dxfer_len) { 1172d43c9ec1SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target requested invalid " 1173d43c9ec1SEdward Tomasz Napierala "length/offset %zd, buffer is %d; reconnecting", 1174009ea47eSEdward Tomasz Napierala off + len, csio->dxfer_len); 1175009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1176009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1177009ea47eSEdward Tomasz Napierala return; 1178009ea47eSEdward Tomasz Napierala } 1179009ea47eSEdward Tomasz Napierala 1180d2d52b00SEdward Tomasz Napierala request = icl_pdu_new(response->ip_conn, M_NOWAIT); 1181009ea47eSEdward Tomasz Napierala if (request == NULL) { 1182009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1183009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1184009ea47eSEdward Tomasz Napierala return; 1185009ea47eSEdward Tomasz Napierala } 1186009ea47eSEdward Tomasz Napierala 1187009ea47eSEdward Tomasz Napierala bhsdo = (struct iscsi_bhs_data_out *)request->ip_bhs; 1188009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_opcode = ISCSI_BHS_OPCODE_SCSI_DATA_OUT; 1189009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_lun = bhsr2t->bhsr2t_lun; 1190009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_initiator_task_tag = 1191009ea47eSEdward Tomasz Napierala bhsr2t->bhsr2t_initiator_task_tag; 1192009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_target_transfer_tag = 1193009ea47eSEdward Tomasz Napierala bhsr2t->bhsr2t_target_transfer_tag; 1194009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_datasn = htonl(io->io_datasn++); 1195009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_buffer_offset = htonl(off); 1196d43c9ec1SEdward Tomasz Napierala error = icl_pdu_append_data(request, csio->data_ptr + off, len, 1197d43c9ec1SEdward Tomasz Napierala M_NOWAIT); 1198009ea47eSEdward Tomasz Napierala if (error != 0) { 1199d43c9ec1SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate memory; " 1200d43c9ec1SEdward Tomasz Napierala "reconnecting"); 1201009ea47eSEdward Tomasz Napierala icl_pdu_free(request); 1202009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1203009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1204009ea47eSEdward Tomasz Napierala return; 1205009ea47eSEdward Tomasz Napierala } 1206009ea47eSEdward Tomasz Napierala 1207009ea47eSEdward Tomasz Napierala off += len; 1208009ea47eSEdward Tomasz Napierala total_len -= len; 1209009ea47eSEdward Tomasz Napierala 1210009ea47eSEdward Tomasz Napierala if (total_len == 0) { 1211009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_flags |= BHSDO_FLAGS_F; 1212009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "setting F, off %zd", off); 1213009ea47eSEdward Tomasz Napierala } else { 1214009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "not finished, off %zd", off); 1215009ea47eSEdward Tomasz Napierala } 1216009ea47eSEdward Tomasz Napierala 1217009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(request); 1218009ea47eSEdward Tomasz Napierala 1219009ea47eSEdward Tomasz Napierala if (total_len == 0) 1220009ea47eSEdward Tomasz Napierala break; 1221009ea47eSEdward Tomasz Napierala } 1222009ea47eSEdward Tomasz Napierala 1223009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1224009ea47eSEdward Tomasz Napierala } 1225009ea47eSEdward Tomasz Napierala 1226009ea47eSEdward Tomasz Napierala static void 1227009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_async_message(struct icl_pdu *response) 1228009ea47eSEdward Tomasz Napierala { 1229009ea47eSEdward Tomasz Napierala struct iscsi_bhs_asynchronous_message *bhsam; 1230009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1231009ea47eSEdward Tomasz Napierala 1232009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 1233009ea47eSEdward Tomasz Napierala bhsam = (struct iscsi_bhs_asynchronous_message *)response->ip_bhs; 1234009ea47eSEdward Tomasz Napierala switch (bhsam->bhsam_async_event) { 1235009ea47eSEdward Tomasz Napierala case BHSAM_EVENT_TARGET_REQUESTS_LOGOUT: 1236009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target requests logout; removing session"); 1237009ea47eSEdward Tomasz Napierala iscsi_session_logout(is); 1238009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1239009ea47eSEdward Tomasz Napierala break; 1240009ea47eSEdward Tomasz Napierala case BHSAM_EVENT_TARGET_TERMINATES_CONNECTION: 1241009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target indicates it will drop drop the connection"); 1242009ea47eSEdward Tomasz Napierala break; 1243009ea47eSEdward Tomasz Napierala case BHSAM_EVENT_TARGET_TERMINATES_SESSION: 1244009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target indicates it will drop drop the session"); 1245009ea47eSEdward Tomasz Napierala break; 1246009ea47eSEdward Tomasz Napierala default: 1247009ea47eSEdward Tomasz Napierala /* 1248009ea47eSEdward Tomasz Napierala * XXX: Technically, we're obligated to also handle 1249009ea47eSEdward Tomasz Napierala * parameter renegotiation. 1250009ea47eSEdward Tomasz Napierala */ 1251009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "ignoring AsyncEvent %d", bhsam->bhsam_async_event); 1252009ea47eSEdward Tomasz Napierala break; 1253009ea47eSEdward Tomasz Napierala } 1254009ea47eSEdward Tomasz Napierala 1255009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1256009ea47eSEdward Tomasz Napierala } 1257009ea47eSEdward Tomasz Napierala 1258009ea47eSEdward Tomasz Napierala static void 1259009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_reject(struct icl_pdu *response) 1260009ea47eSEdward Tomasz Napierala { 1261009ea47eSEdward Tomasz Napierala struct iscsi_bhs_reject *bhsr; 1262009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1263009ea47eSEdward Tomasz Napierala 1264009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 1265009ea47eSEdward Tomasz Napierala bhsr = (struct iscsi_bhs_reject *)response->ip_bhs; 1266009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "received Reject PDU, reason 0x%x; protocol error?", 1267009ea47eSEdward Tomasz Napierala bhsr->bhsr_reason); 1268009ea47eSEdward Tomasz Napierala 1269009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1270009ea47eSEdward Tomasz Napierala } 1271009ea47eSEdward Tomasz Napierala 1272009ea47eSEdward Tomasz Napierala static int 1273009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_wait(struct iscsi_softc *sc, 1274009ea47eSEdward Tomasz Napierala struct iscsi_daemon_request *request) 1275009ea47eSEdward Tomasz Napierala { 1276009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1277009ea47eSEdward Tomasz Napierala int error; 1278009ea47eSEdward Tomasz Napierala 1279009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1280009ea47eSEdward Tomasz Napierala for (;;) { 1281009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 12822be596adSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1283009ea47eSEdward Tomasz Napierala if (is->is_waiting_for_iscsid) 1284009ea47eSEdward Tomasz Napierala break; 12852be596adSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1286009ea47eSEdward Tomasz Napierala } 1287009ea47eSEdward Tomasz Napierala 1288009ea47eSEdward Tomasz Napierala if (is == NULL) { 1289009ea47eSEdward Tomasz Napierala /* 1290009ea47eSEdward Tomasz Napierala * No session requires attention from iscsid(8); wait. 1291009ea47eSEdward Tomasz Napierala */ 1292009ea47eSEdward Tomasz Napierala error = cv_wait_sig(&sc->sc_cv, &sc->sc_lock); 1293009ea47eSEdward Tomasz Napierala if (error != 0) { 1294009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1295009ea47eSEdward Tomasz Napierala return (error); 1296009ea47eSEdward Tomasz Napierala } 1297009ea47eSEdward Tomasz Napierala continue; 1298009ea47eSEdward Tomasz Napierala } 1299009ea47eSEdward Tomasz Napierala 1300009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = false; 1301009ea47eSEdward Tomasz Napierala is->is_login_phase = true; 1302009ea47eSEdward Tomasz Napierala is->is_reason[0] = '\0'; 1303009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1304009ea47eSEdward Tomasz Napierala 1305009ea47eSEdward Tomasz Napierala request->idr_session_id = is->is_id; 1306ffe82e05SAlexander Motin memcpy(&request->idr_isid, &is->is_isid, 1307ffe82e05SAlexander Motin sizeof(request->idr_isid)); 1308ffe82e05SAlexander Motin request->idr_tsih = 0; /* New or reinstated session. */ 1309009ea47eSEdward Tomasz Napierala memcpy(&request->idr_conf, &is->is_conf, 1310009ea47eSEdward Tomasz Napierala sizeof(request->idr_conf)); 1311009ea47eSEdward Tomasz Napierala 131282babffbSEdward Tomasz Napierala error = icl_limits(is->is_conf.isc_offload, 131382babffbSEdward Tomasz Napierala &request->idr_limits.isl_max_data_segment_length); 131482babffbSEdward Tomasz Napierala if (error != 0) { 131582babffbSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "icl_limits for offload \"%s\" " 131682babffbSEdward Tomasz Napierala "failed with error %d", is->is_conf.isc_offload, 131782babffbSEdward Tomasz Napierala error); 131882babffbSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 131982babffbSEdward Tomasz Napierala return (error); 132082babffbSEdward Tomasz Napierala } 132182babffbSEdward Tomasz Napierala 1322009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1323009ea47eSEdward Tomasz Napierala return (0); 1324009ea47eSEdward Tomasz Napierala } 1325009ea47eSEdward Tomasz Napierala } 1326009ea47eSEdward Tomasz Napierala 1327009ea47eSEdward Tomasz Napierala static int 1328009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_handoff(struct iscsi_softc *sc, 1329009ea47eSEdward Tomasz Napierala struct iscsi_daemon_handoff *handoff) 1330009ea47eSEdward Tomasz Napierala { 1331009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1332009ea47eSEdward Tomasz Napierala int error; 1333009ea47eSEdward Tomasz Napierala 1334009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1335009ea47eSEdward Tomasz Napierala 1336009ea47eSEdward Tomasz Napierala /* 1337009ea47eSEdward Tomasz Napierala * Find the session to hand off socket to. 1338009ea47eSEdward Tomasz Napierala */ 1339009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1340009ea47eSEdward Tomasz Napierala if (is->is_id == handoff->idh_session_id) 1341009ea47eSEdward Tomasz Napierala break; 1342009ea47eSEdward Tomasz Napierala } 1343009ea47eSEdward Tomasz Napierala if (is == NULL) { 1344009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1345009ea47eSEdward Tomasz Napierala return (ESRCH); 1346009ea47eSEdward Tomasz Napierala } 1347009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1348009ea47eSEdward Tomasz Napierala if (is->is_conf.isc_discovery || is->is_terminating) { 1349009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1350009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1351009ea47eSEdward Tomasz Napierala return (EINVAL); 1352009ea47eSEdward Tomasz Napierala } 13530260023fSEdward Tomasz Napierala if (is->is_connected) { 13540260023fSEdward Tomasz Napierala /* 13550260023fSEdward Tomasz Napierala * This might have happened because another iscsid(8) 13560260023fSEdward Tomasz Napierala * instance handed off the connection in the meantime. 13570260023fSEdward Tomasz Napierala * Just return. 13580260023fSEdward Tomasz Napierala */ 13590260023fSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "handoff on already connected " 13600260023fSEdward Tomasz Napierala "session"); 13610260023fSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 13620260023fSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 13630260023fSEdward Tomasz Napierala return (EBUSY); 13640260023fSEdward Tomasz Napierala } 1365009ea47eSEdward Tomasz Napierala 1366009ea47eSEdward Tomasz Napierala strlcpy(is->is_target_alias, handoff->idh_target_alias, 1367009ea47eSEdward Tomasz Napierala sizeof(is->is_target_alias)); 1368ffe82e05SAlexander Motin is->is_tsih = handoff->idh_tsih; 1369009ea47eSEdward Tomasz Napierala is->is_statsn = handoff->idh_statsn; 1370009ea47eSEdward Tomasz Napierala is->is_initial_r2t = handoff->idh_initial_r2t; 1371009ea47eSEdward Tomasz Napierala is->is_immediate_data = handoff->idh_immediate_data; 1372009ea47eSEdward Tomasz Napierala is->is_max_data_segment_length = handoff->idh_max_data_segment_length; 1373009ea47eSEdward Tomasz Napierala is->is_max_burst_length = handoff->idh_max_burst_length; 1374009ea47eSEdward Tomasz Napierala is->is_first_burst_length = handoff->idh_first_burst_length; 1375009ea47eSEdward Tomasz Napierala 1376009ea47eSEdward Tomasz Napierala if (handoff->idh_header_digest == ISCSI_DIGEST_CRC32C) 1377009ea47eSEdward Tomasz Napierala is->is_conn->ic_header_crc32c = true; 1378009ea47eSEdward Tomasz Napierala else 1379009ea47eSEdward Tomasz Napierala is->is_conn->ic_header_crc32c = false; 1380009ea47eSEdward Tomasz Napierala if (handoff->idh_data_digest == ISCSI_DIGEST_CRC32C) 1381009ea47eSEdward Tomasz Napierala is->is_conn->ic_data_crc32c = true; 1382009ea47eSEdward Tomasz Napierala else 1383009ea47eSEdward Tomasz Napierala is->is_conn->ic_data_crc32c = false; 1384009ea47eSEdward Tomasz Napierala 1385009ea47eSEdward Tomasz Napierala is->is_cmdsn = 0; 1386cf23c509SEdward Tomasz Napierala is->is_expcmdsn = 0; 1387cf23c509SEdward Tomasz Napierala is->is_maxcmdsn = 0; 1388009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = false; 1389009ea47eSEdward Tomasz Napierala is->is_login_phase = false; 1390009ea47eSEdward Tomasz Napierala is->is_timeout = 0; 1391009ea47eSEdward Tomasz Napierala is->is_connected = true; 1392009ea47eSEdward Tomasz Napierala is->is_reason[0] = '\0'; 1393009ea47eSEdward Tomasz Napierala 1394009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1395009ea47eSEdward Tomasz Napierala 139657a4f20bSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 139757a4f20bSEdward Tomasz Napierala if (handoff->idh_socket != 0) { 139857a4f20bSEdward Tomasz Napierala #endif 139957a4f20bSEdward Tomasz Napierala /* 140057a4f20bSEdward Tomasz Napierala * Handoff without using ICL proxy. 140157a4f20bSEdward Tomasz Napierala */ 1402009ea47eSEdward Tomasz Napierala error = icl_conn_handoff(is->is_conn, handoff->idh_socket); 1403009ea47eSEdward Tomasz Napierala if (error != 0) { 1404009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1405009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1406009ea47eSEdward Tomasz Napierala return (error); 1407009ea47eSEdward Tomasz Napierala } 140857a4f20bSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 140957a4f20bSEdward Tomasz Napierala } 1410009ea47eSEdward Tomasz Napierala #endif 1411009ea47eSEdward Tomasz Napierala 1412009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1413009ea47eSEdward Tomasz Napierala 1414009ea47eSEdward Tomasz Napierala if (is->is_sim != NULL) { 1415009ea47eSEdward Tomasz Napierala /* 1416009ea47eSEdward Tomasz Napierala * When reconnecting, there already is SIM allocated for the session. 1417009ea47eSEdward Tomasz Napierala */ 1418009ea47eSEdward Tomasz Napierala KASSERT(is->is_simq_frozen, ("reconnect without frozen simq")); 1419009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1420009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "releasing"); 1421009ea47eSEdward Tomasz Napierala xpt_release_simq(is->is_sim, 1); 1422009ea47eSEdward Tomasz Napierala is->is_simq_frozen = false; 1423009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1424009ea47eSEdward Tomasz Napierala 1425009ea47eSEdward Tomasz Napierala } else { 1426009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1427009ea47eSEdward Tomasz Napierala is->is_devq = cam_simq_alloc(maxtags); 1428009ea47eSEdward Tomasz Napierala if (is->is_devq == NULL) { 1429009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate simq"); 1430009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1431009ea47eSEdward Tomasz Napierala return (ENOMEM); 1432009ea47eSEdward Tomasz Napierala } 1433009ea47eSEdward Tomasz Napierala 1434009ea47eSEdward Tomasz Napierala is->is_sim = cam_sim_alloc(iscsi_action, iscsi_poll, "iscsi", 1435009ea47eSEdward Tomasz Napierala is, is->is_id /* unit */, &is->is_lock, 1436462cf3baSAlexander Motin 1, maxtags, is->is_devq); 1437009ea47eSEdward Tomasz Napierala if (is->is_sim == NULL) { 1438009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1439009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate SIM"); 1440009ea47eSEdward Tomasz Napierala cam_simq_free(is->is_devq); 1441009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1442009ea47eSEdward Tomasz Napierala return (ENOMEM); 1443009ea47eSEdward Tomasz Napierala } 1444009ea47eSEdward Tomasz Napierala 1445009ea47eSEdward Tomasz Napierala error = xpt_bus_register(is->is_sim, NULL, 0); 1446009ea47eSEdward Tomasz Napierala if (error != 0) { 1447009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1448009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to register bus"); 1449009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1450009ea47eSEdward Tomasz Napierala return (ENOMEM); 1451009ea47eSEdward Tomasz Napierala } 1452009ea47eSEdward Tomasz Napierala 1453009ea47eSEdward Tomasz Napierala error = xpt_create_path(&is->is_path, /*periph*/NULL, 1454009ea47eSEdward Tomasz Napierala cam_sim_path(is->is_sim), CAM_TARGET_WILDCARD, 1455009ea47eSEdward Tomasz Napierala CAM_LUN_WILDCARD); 1456009ea47eSEdward Tomasz Napierala if (error != CAM_REQ_CMP) { 1457009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1458009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to create path"); 1459009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1460009ea47eSEdward Tomasz Napierala return (ENOMEM); 1461009ea47eSEdward Tomasz Napierala } 1462009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1463009ea47eSEdward Tomasz Napierala } 1464009ea47eSEdward Tomasz Napierala 1465009ea47eSEdward Tomasz Napierala return (0); 1466009ea47eSEdward Tomasz Napierala } 1467009ea47eSEdward Tomasz Napierala 1468009ea47eSEdward Tomasz Napierala static int 1469009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_fail(struct iscsi_softc *sc, 1470009ea47eSEdward Tomasz Napierala struct iscsi_daemon_fail *fail) 1471009ea47eSEdward Tomasz Napierala { 1472009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1473009ea47eSEdward Tomasz Napierala 1474009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1475009ea47eSEdward Tomasz Napierala 1476009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1477009ea47eSEdward Tomasz Napierala if (is->is_id == fail->idf_session_id) 1478009ea47eSEdward Tomasz Napierala break; 1479009ea47eSEdward Tomasz Napierala } 1480009ea47eSEdward Tomasz Napierala if (is == NULL) { 1481009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1482009ea47eSEdward Tomasz Napierala return (ESRCH); 1483009ea47eSEdward Tomasz Napierala } 1484009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1485009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "iscsid(8) failed: %s", 1486009ea47eSEdward Tomasz Napierala fail->idf_reason); 1487009ea47eSEdward Tomasz Napierala strlcpy(is->is_reason, fail->idf_reason, sizeof(is->is_reason)); 1488009ea47eSEdward Tomasz Napierala //is->is_waiting_for_iscsid = false; 1489009ea47eSEdward Tomasz Napierala //is->is_login_phase = true; 1490009ea47eSEdward Tomasz Napierala //iscsi_session_reconnect(is); 1491009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1492009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1493009ea47eSEdward Tomasz Napierala 1494009ea47eSEdward Tomasz Napierala return (0); 1495009ea47eSEdward Tomasz Napierala } 1496009ea47eSEdward Tomasz Napierala 1497009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 1498009ea47eSEdward Tomasz Napierala static int 1499009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_connect(struct iscsi_softc *sc, 1500009ea47eSEdward Tomasz Napierala struct iscsi_daemon_connect *idc) 1501009ea47eSEdward Tomasz Napierala { 1502009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1503009ea47eSEdward Tomasz Napierala struct sockaddr *from_sa, *to_sa; 1504009ea47eSEdward Tomasz Napierala int error; 1505009ea47eSEdward Tomasz Napierala 1506009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1507009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1508009ea47eSEdward Tomasz Napierala if (is->is_id == idc->idc_session_id) 1509009ea47eSEdward Tomasz Napierala break; 1510009ea47eSEdward Tomasz Napierala } 1511009ea47eSEdward Tomasz Napierala if (is == NULL) { 1512009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1513009ea47eSEdward Tomasz Napierala return (ESRCH); 1514009ea47eSEdward Tomasz Napierala } 1515009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1516009ea47eSEdward Tomasz Napierala 1517009ea47eSEdward Tomasz Napierala if (idc->idc_from_addrlen > 0) { 1518009ea47eSEdward Tomasz Napierala error = getsockaddr(&from_sa, (void *)idc->idc_from_addr, idc->idc_from_addrlen); 151957a4f20bSEdward Tomasz Napierala if (error != 0) { 152057a4f20bSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, 152157a4f20bSEdward Tomasz Napierala "getsockaddr failed with error %d", error); 1522009ea47eSEdward Tomasz Napierala return (error); 152357a4f20bSEdward Tomasz Napierala } 1524009ea47eSEdward Tomasz Napierala } else { 1525009ea47eSEdward Tomasz Napierala from_sa = NULL; 1526009ea47eSEdward Tomasz Napierala } 1527009ea47eSEdward Tomasz Napierala error = getsockaddr(&to_sa, (void *)idc->idc_to_addr, idc->idc_to_addrlen); 1528009ea47eSEdward Tomasz Napierala if (error != 0) { 152957a4f20bSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "getsockaddr failed with error %d", 153057a4f20bSEdward Tomasz Napierala error); 1531009ea47eSEdward Tomasz Napierala free(from_sa, M_SONAME); 1532009ea47eSEdward Tomasz Napierala return (error); 1533009ea47eSEdward Tomasz Napierala } 1534009ea47eSEdward Tomasz Napierala 1535009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1536009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = false; 1537009ea47eSEdward Tomasz Napierala is->is_login_phase = true; 1538009ea47eSEdward Tomasz Napierala is->is_timeout = 0; 1539009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1540009ea47eSEdward Tomasz Napierala 1541009ea47eSEdward Tomasz Napierala error = icl_conn_connect(is->is_conn, idc->idc_iser, idc->idc_domain, 1542009ea47eSEdward Tomasz Napierala idc->idc_socktype, idc->idc_protocol, from_sa, to_sa); 1543009ea47eSEdward Tomasz Napierala free(from_sa, M_SONAME); 1544009ea47eSEdward Tomasz Napierala free(to_sa, M_SONAME); 1545009ea47eSEdward Tomasz Napierala 1546009ea47eSEdward Tomasz Napierala /* 1547009ea47eSEdward Tomasz Napierala * Digests are always disabled during login phase. 1548009ea47eSEdward Tomasz Napierala */ 1549009ea47eSEdward Tomasz Napierala is->is_conn->ic_header_crc32c = false; 1550009ea47eSEdward Tomasz Napierala is->is_conn->ic_data_crc32c = false; 1551009ea47eSEdward Tomasz Napierala 1552009ea47eSEdward Tomasz Napierala return (error); 1553009ea47eSEdward Tomasz Napierala } 1554009ea47eSEdward Tomasz Napierala 1555009ea47eSEdward Tomasz Napierala static int 1556009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_send(struct iscsi_softc *sc, 1557009ea47eSEdward Tomasz Napierala struct iscsi_daemon_send *ids) 1558009ea47eSEdward Tomasz Napierala { 1559009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1560009ea47eSEdward Tomasz Napierala struct icl_pdu *ip; 1561009ea47eSEdward Tomasz Napierala size_t datalen; 1562009ea47eSEdward Tomasz Napierala void *data; 1563009ea47eSEdward Tomasz Napierala int error; 1564009ea47eSEdward Tomasz Napierala 1565009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1566009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1567009ea47eSEdward Tomasz Napierala if (is->is_id == ids->ids_session_id) 1568009ea47eSEdward Tomasz Napierala break; 1569009ea47eSEdward Tomasz Napierala } 1570009ea47eSEdward Tomasz Napierala if (is == NULL) { 1571009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1572009ea47eSEdward Tomasz Napierala return (ESRCH); 1573009ea47eSEdward Tomasz Napierala } 1574009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1575009ea47eSEdward Tomasz Napierala 1576009ea47eSEdward Tomasz Napierala if (is->is_login_phase == false) 1577009ea47eSEdward Tomasz Napierala return (EBUSY); 1578009ea47eSEdward Tomasz Napierala 1579009ea47eSEdward Tomasz Napierala if (is->is_terminating || is->is_reconnecting) 1580009ea47eSEdward Tomasz Napierala return (EIO); 1581009ea47eSEdward Tomasz Napierala 1582009ea47eSEdward Tomasz Napierala datalen = ids->ids_data_segment_len; 1583009ea47eSEdward Tomasz Napierala if (datalen > ISCSI_MAX_DATA_SEGMENT_LENGTH) 1584009ea47eSEdward Tomasz Napierala return (EINVAL); 1585009ea47eSEdward Tomasz Napierala if (datalen > 0) { 1586009ea47eSEdward Tomasz Napierala data = malloc(datalen, M_ISCSI, M_WAITOK); 1587009ea47eSEdward Tomasz Napierala error = copyin(ids->ids_data_segment, data, datalen); 1588009ea47eSEdward Tomasz Napierala if (error != 0) { 1589009ea47eSEdward Tomasz Napierala free(data, M_ISCSI); 1590009ea47eSEdward Tomasz Napierala return (error); 1591009ea47eSEdward Tomasz Napierala } 1592009ea47eSEdward Tomasz Napierala } 1593009ea47eSEdward Tomasz Napierala 1594d2d52b00SEdward Tomasz Napierala ip = icl_pdu_new(is->is_conn, M_WAITOK); 1595009ea47eSEdward Tomasz Napierala memcpy(ip->ip_bhs, ids->ids_bhs, sizeof(*ip->ip_bhs)); 1596009ea47eSEdward Tomasz Napierala if (datalen > 0) { 1597009ea47eSEdward Tomasz Napierala error = icl_pdu_append_data(ip, data, datalen, M_WAITOK); 1598009ea47eSEdward Tomasz Napierala KASSERT(error == 0, ("icl_pdu_append_data(..., M_WAITOK) failed")); 1599009ea47eSEdward Tomasz Napierala free(data, M_ISCSI); 1600009ea47eSEdward Tomasz Napierala } 1601009ea47eSEdward Tomasz Napierala icl_pdu_queue(ip); 1602009ea47eSEdward Tomasz Napierala 1603009ea47eSEdward Tomasz Napierala return (0); 1604009ea47eSEdward Tomasz Napierala } 1605009ea47eSEdward Tomasz Napierala 1606009ea47eSEdward Tomasz Napierala static int 1607009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_receive(struct iscsi_softc *sc, 1608009ea47eSEdward Tomasz Napierala struct iscsi_daemon_receive *idr) 1609009ea47eSEdward Tomasz Napierala { 1610009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1611009ea47eSEdward Tomasz Napierala struct icl_pdu *ip; 1612009ea47eSEdward Tomasz Napierala void *data; 1613009ea47eSEdward Tomasz Napierala 1614009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1615009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1616009ea47eSEdward Tomasz Napierala if (is->is_id == idr->idr_session_id) 1617009ea47eSEdward Tomasz Napierala break; 1618009ea47eSEdward Tomasz Napierala } 1619009ea47eSEdward Tomasz Napierala if (is == NULL) { 1620009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1621009ea47eSEdward Tomasz Napierala return (ESRCH); 1622009ea47eSEdward Tomasz Napierala } 1623009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1624009ea47eSEdward Tomasz Napierala 1625009ea47eSEdward Tomasz Napierala if (is->is_login_phase == false) 1626009ea47eSEdward Tomasz Napierala return (EBUSY); 1627009ea47eSEdward Tomasz Napierala 1628009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1629009ea47eSEdward Tomasz Napierala while (is->is_login_pdu == NULL && 1630009ea47eSEdward Tomasz Napierala is->is_terminating == false && 1631009ea47eSEdward Tomasz Napierala is->is_reconnecting == false) 1632009ea47eSEdward Tomasz Napierala cv_wait(&is->is_login_cv, &is->is_lock); 1633009ea47eSEdward Tomasz Napierala if (is->is_terminating || is->is_reconnecting) { 1634009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1635009ea47eSEdward Tomasz Napierala return (EIO); 1636009ea47eSEdward Tomasz Napierala } 1637009ea47eSEdward Tomasz Napierala ip = is->is_login_pdu; 1638009ea47eSEdward Tomasz Napierala is->is_login_pdu = NULL; 1639009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1640009ea47eSEdward Tomasz Napierala 1641009ea47eSEdward Tomasz Napierala if (ip->ip_data_len > idr->idr_data_segment_len) { 1642009ea47eSEdward Tomasz Napierala icl_pdu_free(ip); 1643009ea47eSEdward Tomasz Napierala return (EMSGSIZE); 1644009ea47eSEdward Tomasz Napierala } 1645009ea47eSEdward Tomasz Napierala 1646009ea47eSEdward Tomasz Napierala copyout(ip->ip_bhs, idr->idr_bhs, sizeof(*ip->ip_bhs)); 1647009ea47eSEdward Tomasz Napierala if (ip->ip_data_len > 0) { 1648009ea47eSEdward Tomasz Napierala data = malloc(ip->ip_data_len, M_ISCSI, M_WAITOK); 1649009ea47eSEdward Tomasz Napierala icl_pdu_get_data(ip, 0, data, ip->ip_data_len); 1650009ea47eSEdward Tomasz Napierala copyout(data, idr->idr_data_segment, ip->ip_data_len); 1651009ea47eSEdward Tomasz Napierala free(data, M_ISCSI); 1652009ea47eSEdward Tomasz Napierala } 1653009ea47eSEdward Tomasz Napierala 1654009ea47eSEdward Tomasz Napierala icl_pdu_free(ip); 1655009ea47eSEdward Tomasz Napierala 1656009ea47eSEdward Tomasz Napierala return (0); 1657009ea47eSEdward Tomasz Napierala } 1658009ea47eSEdward Tomasz Napierala #endif /* ICL_KERNEL_PROXY */ 1659009ea47eSEdward Tomasz Napierala 1660009ea47eSEdward Tomasz Napierala static void 1661009ea47eSEdward Tomasz Napierala iscsi_sanitize_session_conf(struct iscsi_session_conf *isc) 1662009ea47eSEdward Tomasz Napierala { 1663009ea47eSEdward Tomasz Napierala /* 1664009ea47eSEdward Tomasz Napierala * Just make sure all the fields are null-terminated. 1665009ea47eSEdward Tomasz Napierala * 1666009ea47eSEdward Tomasz Napierala * XXX: This is not particularly secure. We should 1667009ea47eSEdward Tomasz Napierala * create our own conf and then copy in relevant 1668009ea47eSEdward Tomasz Napierala * fields. 1669009ea47eSEdward Tomasz Napierala */ 1670009ea47eSEdward Tomasz Napierala isc->isc_initiator[ISCSI_NAME_LEN - 1] = '\0'; 1671009ea47eSEdward Tomasz Napierala isc->isc_initiator_addr[ISCSI_ADDR_LEN - 1] = '\0'; 1672009ea47eSEdward Tomasz Napierala isc->isc_initiator_alias[ISCSI_ALIAS_LEN - 1] = '\0'; 1673009ea47eSEdward Tomasz Napierala isc->isc_target[ISCSI_NAME_LEN - 1] = '\0'; 1674009ea47eSEdward Tomasz Napierala isc->isc_target_addr[ISCSI_ADDR_LEN - 1] = '\0'; 1675009ea47eSEdward Tomasz Napierala isc->isc_user[ISCSI_NAME_LEN - 1] = '\0'; 1676009ea47eSEdward Tomasz Napierala isc->isc_secret[ISCSI_SECRET_LEN - 1] = '\0'; 1677009ea47eSEdward Tomasz Napierala isc->isc_mutual_user[ISCSI_NAME_LEN - 1] = '\0'; 1678009ea47eSEdward Tomasz Napierala isc->isc_mutual_secret[ISCSI_SECRET_LEN - 1] = '\0'; 1679009ea47eSEdward Tomasz Napierala } 1680009ea47eSEdward Tomasz Napierala 168151be90b5SEdward Tomasz Napierala static bool 168251be90b5SEdward Tomasz Napierala iscsi_valid_session_conf(const struct iscsi_session_conf *isc) 168351be90b5SEdward Tomasz Napierala { 168451be90b5SEdward Tomasz Napierala 168551be90b5SEdward Tomasz Napierala if (isc->isc_initiator[0] == '\0') { 168651be90b5SEdward Tomasz Napierala ISCSI_DEBUG("empty isc_initiator"); 168751be90b5SEdward Tomasz Napierala return (false); 168851be90b5SEdward Tomasz Napierala } 168951be90b5SEdward Tomasz Napierala 169051be90b5SEdward Tomasz Napierala if (isc->isc_target_addr[0] == '\0') { 169151be90b5SEdward Tomasz Napierala ISCSI_DEBUG("empty isc_target_addr"); 169251be90b5SEdward Tomasz Napierala return (false); 169351be90b5SEdward Tomasz Napierala } 169451be90b5SEdward Tomasz Napierala 169551be90b5SEdward Tomasz Napierala if (isc->isc_discovery != 0 && isc->isc_target[0] != 0) { 169651be90b5SEdward Tomasz Napierala ISCSI_DEBUG("non-empty isc_target for discovery session"); 169751be90b5SEdward Tomasz Napierala return (false); 169851be90b5SEdward Tomasz Napierala } 169951be90b5SEdward Tomasz Napierala 170051be90b5SEdward Tomasz Napierala if (isc->isc_discovery == 0 && isc->isc_target[0] == 0) { 170151be90b5SEdward Tomasz Napierala ISCSI_DEBUG("empty isc_target for non-discovery session"); 170251be90b5SEdward Tomasz Napierala return (false); 170351be90b5SEdward Tomasz Napierala } 170451be90b5SEdward Tomasz Napierala 170551be90b5SEdward Tomasz Napierala return (true); 170651be90b5SEdward Tomasz Napierala } 170751be90b5SEdward Tomasz Napierala 1708009ea47eSEdward Tomasz Napierala static int 1709009ea47eSEdward Tomasz Napierala iscsi_ioctl_session_add(struct iscsi_softc *sc, struct iscsi_session_add *isa) 1710009ea47eSEdward Tomasz Napierala { 1711009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1712009ea47eSEdward Tomasz Napierala const struct iscsi_session *is2; 1713009ea47eSEdward Tomasz Napierala int error; 1714009ea47eSEdward Tomasz Napierala 1715009ea47eSEdward Tomasz Napierala iscsi_sanitize_session_conf(&isa->isa_conf); 171651be90b5SEdward Tomasz Napierala if (iscsi_valid_session_conf(&isa->isa_conf) == false) 171751be90b5SEdward Tomasz Napierala return (EINVAL); 1718009ea47eSEdward Tomasz Napierala 1719009ea47eSEdward Tomasz Napierala is = malloc(sizeof(*is), M_ISCSI, M_ZERO | M_WAITOK); 1720009ea47eSEdward Tomasz Napierala memcpy(&is->is_conf, &isa->isa_conf, sizeof(is->is_conf)); 1721009ea47eSEdward Tomasz Napierala 1722009ea47eSEdward Tomasz Napierala sx_xlock(&sc->sc_lock); 1723009ea47eSEdward Tomasz Napierala 1724009ea47eSEdward Tomasz Napierala /* 1725009ea47eSEdward Tomasz Napierala * Prevent duplicates. 1726009ea47eSEdward Tomasz Napierala */ 1727009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is2, &sc->sc_sessions, is_next) { 17287843bd03SEdward Tomasz Napierala if (!!is->is_conf.isc_discovery != 17297843bd03SEdward Tomasz Napierala !!is2->is_conf.isc_discovery) 17307843bd03SEdward Tomasz Napierala continue; 17317843bd03SEdward Tomasz Napierala 17327843bd03SEdward Tomasz Napierala if (strcmp(is->is_conf.isc_target_addr, 17337843bd03SEdward Tomasz Napierala is2->is_conf.isc_target_addr) != 0) 17347843bd03SEdward Tomasz Napierala continue; 17357843bd03SEdward Tomasz Napierala 17367843bd03SEdward Tomasz Napierala if (is->is_conf.isc_discovery == 0 && 17377843bd03SEdward Tomasz Napierala strcmp(is->is_conf.isc_target, 17387843bd03SEdward Tomasz Napierala is2->is_conf.isc_target) != 0) 17397843bd03SEdward Tomasz Napierala continue; 17407843bd03SEdward Tomasz Napierala 1741009ea47eSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 17427843bd03SEdward Tomasz Napierala free(is, M_ISCSI); 1743009ea47eSEdward Tomasz Napierala return (EBUSY); 1744009ea47eSEdward Tomasz Napierala } 1745009ea47eSEdward Tomasz Napierala 174682babffbSEdward Tomasz Napierala is->is_conn = icl_new_conn(is->is_conf.isc_offload, 174782babffbSEdward Tomasz Napierala "iscsi", &is->is_lock); 174882babffbSEdward Tomasz Napierala if (is->is_conn == NULL) { 174982babffbSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 175082babffbSEdward Tomasz Napierala free(is, M_ISCSI); 175182babffbSEdward Tomasz Napierala return (EINVAL); 175282babffbSEdward Tomasz Napierala } 1753009ea47eSEdward Tomasz Napierala is->is_conn->ic_receive = iscsi_receive_callback; 1754009ea47eSEdward Tomasz Napierala is->is_conn->ic_error = iscsi_error_callback; 1755009ea47eSEdward Tomasz Napierala is->is_conn->ic_prv0 = is; 1756009ea47eSEdward Tomasz Napierala TAILQ_INIT(&is->is_outstanding); 175716c158a5SEdward Tomasz Napierala STAILQ_INIT(&is->is_postponed); 1758009ea47eSEdward Tomasz Napierala mtx_init(&is->is_lock, "iscsi_lock", NULL, MTX_DEF); 1759009ea47eSEdward Tomasz Napierala cv_init(&is->is_maintenance_cv, "iscsi_mt"); 1760009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 1761009ea47eSEdward Tomasz Napierala cv_init(&is->is_login_cv, "iscsi_login"); 1762009ea47eSEdward Tomasz Napierala #endif 1763009ea47eSEdward Tomasz Napierala 1764009ea47eSEdward Tomasz Napierala is->is_softc = sc; 1765009ea47eSEdward Tomasz Napierala sc->sc_last_session_id++; 1766009ea47eSEdward Tomasz Napierala is->is_id = sc->sc_last_session_id; 1767ffe82e05SAlexander Motin is->is_isid[0] = 0x80; /* RFC 3720, 10.12.5: 10b, "Random" ISID. */ 1768ffe82e05SAlexander Motin arc4rand(&is->is_isid[1], 5, 0); 1769ffe82e05SAlexander Motin is->is_tsih = 0; 1770009ea47eSEdward Tomasz Napierala callout_init(&is->is_callout, 1); 1771009ea47eSEdward Tomasz Napierala 1772009ea47eSEdward Tomasz Napierala error = kthread_add(iscsi_maintenance_thread, is, NULL, NULL, 0, 0, "iscsimt"); 1773009ea47eSEdward Tomasz Napierala if (error != 0) { 1774009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "kthread_add(9) failed with error %d", error); 177509f2b94bSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 1776009ea47eSEdward Tomasz Napierala return (error); 1777009ea47eSEdward Tomasz Napierala } 1778009ea47eSEdward Tomasz Napierala 177909f2b94bSEdward Tomasz Napierala callout_reset(&is->is_callout, 1 * hz, iscsi_callout, is); 178009f2b94bSEdward Tomasz Napierala TAILQ_INSERT_TAIL(&sc->sc_sessions, is, is_next); 178109f2b94bSEdward Tomasz Napierala 1782009ea47eSEdward Tomasz Napierala /* 1783009ea47eSEdward Tomasz Napierala * Trigger immediate reconnection. 1784009ea47eSEdward Tomasz Napierala */ 17852be596adSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1786009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = true; 1787009ea47eSEdward Tomasz Napierala strlcpy(is->is_reason, "Waiting for iscsid(8)", sizeof(is->is_reason)); 17882be596adSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1789009ea47eSEdward Tomasz Napierala cv_signal(&sc->sc_cv); 1790009ea47eSEdward Tomasz Napierala 1791009ea47eSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 1792009ea47eSEdward Tomasz Napierala 1793009ea47eSEdward Tomasz Napierala return (0); 1794009ea47eSEdward Tomasz Napierala } 1795009ea47eSEdward Tomasz Napierala 1796009ea47eSEdward Tomasz Napierala static bool 1797009ea47eSEdward Tomasz Napierala iscsi_session_conf_matches(unsigned int id1, const struct iscsi_session_conf *c1, 1798009ea47eSEdward Tomasz Napierala unsigned int id2, const struct iscsi_session_conf *c2) 1799009ea47eSEdward Tomasz Napierala { 18006cc1e267SEdward Tomasz Napierala 18016cc1e267SEdward Tomasz Napierala if (id2 != 0 && id2 != id1) 1802009ea47eSEdward Tomasz Napierala return (false); 18036cc1e267SEdward Tomasz Napierala if (c2->isc_target[0] != '\0' && 18046cc1e267SEdward Tomasz Napierala strcmp(c1->isc_target, c2->isc_target) != 0) 18056cc1e267SEdward Tomasz Napierala return (false); 18066cc1e267SEdward Tomasz Napierala if (c2->isc_target_addr[0] != '\0' && 18076cc1e267SEdward Tomasz Napierala strcmp(c1->isc_target_addr, c2->isc_target_addr) != 0) 18086cc1e267SEdward Tomasz Napierala return (false); 18096cc1e267SEdward Tomasz Napierala return (true); 1810009ea47eSEdward Tomasz Napierala } 1811009ea47eSEdward Tomasz Napierala 1812009ea47eSEdward Tomasz Napierala static int 1813009ea47eSEdward Tomasz Napierala iscsi_ioctl_session_remove(struct iscsi_softc *sc, 1814009ea47eSEdward Tomasz Napierala struct iscsi_session_remove *isr) 1815009ea47eSEdward Tomasz Napierala { 1816009ea47eSEdward Tomasz Napierala struct iscsi_session *is, *tmp; 1817009ea47eSEdward Tomasz Napierala bool found = false; 1818009ea47eSEdward Tomasz Napierala 1819009ea47eSEdward Tomasz Napierala iscsi_sanitize_session_conf(&isr->isr_conf); 1820009ea47eSEdward Tomasz Napierala 1821009ea47eSEdward Tomasz Napierala sx_xlock(&sc->sc_lock); 1822009ea47eSEdward Tomasz Napierala TAILQ_FOREACH_SAFE(is, &sc->sc_sessions, is_next, tmp) { 1823009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1824009ea47eSEdward Tomasz Napierala if (iscsi_session_conf_matches(is->is_id, &is->is_conf, 1825009ea47eSEdward Tomasz Napierala isr->isr_session_id, &isr->isr_conf)) { 1826009ea47eSEdward Tomasz Napierala found = true; 1827009ea47eSEdward Tomasz Napierala iscsi_session_logout(is); 1828009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1829009ea47eSEdward Tomasz Napierala } 1830009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1831009ea47eSEdward Tomasz Napierala } 1832009ea47eSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 1833009ea47eSEdward Tomasz Napierala 1834009ea47eSEdward Tomasz Napierala if (!found) 1835009ea47eSEdward Tomasz Napierala return (ESRCH); 1836009ea47eSEdward Tomasz Napierala 1837009ea47eSEdward Tomasz Napierala return (0); 1838009ea47eSEdward Tomasz Napierala } 1839009ea47eSEdward Tomasz Napierala 1840009ea47eSEdward Tomasz Napierala static int 1841009ea47eSEdward Tomasz Napierala iscsi_ioctl_session_list(struct iscsi_softc *sc, struct iscsi_session_list *isl) 1842009ea47eSEdward Tomasz Napierala { 1843009ea47eSEdward Tomasz Napierala int error; 1844009ea47eSEdward Tomasz Napierala unsigned int i = 0; 1845009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1846009ea47eSEdward Tomasz Napierala struct iscsi_session_state iss; 1847009ea47eSEdward Tomasz Napierala 1848009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1849009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1850009ea47eSEdward Tomasz Napierala if (i >= isl->isl_nentries) { 1851009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1852009ea47eSEdward Tomasz Napierala return (EMSGSIZE); 1853009ea47eSEdward Tomasz Napierala } 1854009ea47eSEdward Tomasz Napierala memset(&iss, 0, sizeof(iss)); 1855009ea47eSEdward Tomasz Napierala memcpy(&iss.iss_conf, &is->is_conf, sizeof(iss.iss_conf)); 1856009ea47eSEdward Tomasz Napierala iss.iss_id = is->is_id; 1857009ea47eSEdward Tomasz Napierala strlcpy(iss.iss_target_alias, is->is_target_alias, sizeof(iss.iss_target_alias)); 1858009ea47eSEdward Tomasz Napierala strlcpy(iss.iss_reason, is->is_reason, sizeof(iss.iss_reason)); 185982babffbSEdward Tomasz Napierala strlcpy(iss.iss_offload, is->is_conn->ic_offload, sizeof(iss.iss_offload)); 1860009ea47eSEdward Tomasz Napierala 1861009ea47eSEdward Tomasz Napierala if (is->is_conn->ic_header_crc32c) 1862009ea47eSEdward Tomasz Napierala iss.iss_header_digest = ISCSI_DIGEST_CRC32C; 1863009ea47eSEdward Tomasz Napierala else 1864009ea47eSEdward Tomasz Napierala iss.iss_header_digest = ISCSI_DIGEST_NONE; 1865009ea47eSEdward Tomasz Napierala 1866009ea47eSEdward Tomasz Napierala if (is->is_conn->ic_data_crc32c) 1867009ea47eSEdward Tomasz Napierala iss.iss_data_digest = ISCSI_DIGEST_CRC32C; 1868009ea47eSEdward Tomasz Napierala else 1869009ea47eSEdward Tomasz Napierala iss.iss_data_digest = ISCSI_DIGEST_NONE; 1870009ea47eSEdward Tomasz Napierala 1871009ea47eSEdward Tomasz Napierala iss.iss_max_data_segment_length = is->is_max_data_segment_length; 1872009ea47eSEdward Tomasz Napierala iss.iss_immediate_data = is->is_immediate_data; 1873009ea47eSEdward Tomasz Napierala iss.iss_connected = is->is_connected; 1874009ea47eSEdward Tomasz Napierala 1875009ea47eSEdward Tomasz Napierala error = copyout(&iss, isl->isl_pstates + i, sizeof(iss)); 1876009ea47eSEdward Tomasz Napierala if (error != 0) { 1877009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1878009ea47eSEdward Tomasz Napierala return (error); 1879009ea47eSEdward Tomasz Napierala } 1880009ea47eSEdward Tomasz Napierala i++; 1881009ea47eSEdward Tomasz Napierala } 1882009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1883009ea47eSEdward Tomasz Napierala 1884009ea47eSEdward Tomasz Napierala isl->isl_nentries = i; 1885009ea47eSEdward Tomasz Napierala 1886009ea47eSEdward Tomasz Napierala return (0); 1887009ea47eSEdward Tomasz Napierala } 1888009ea47eSEdward Tomasz Napierala 1889009ea47eSEdward Tomasz Napierala static int 189051be90b5SEdward Tomasz Napierala iscsi_ioctl_session_modify(struct iscsi_softc *sc, 189151be90b5SEdward Tomasz Napierala struct iscsi_session_modify *ism) 189251be90b5SEdward Tomasz Napierala { 189351be90b5SEdward Tomasz Napierala struct iscsi_session *is; 189451be90b5SEdward Tomasz Napierala 189551be90b5SEdward Tomasz Napierala iscsi_sanitize_session_conf(&ism->ism_conf); 189651be90b5SEdward Tomasz Napierala if (iscsi_valid_session_conf(&ism->ism_conf) == false) 189751be90b5SEdward Tomasz Napierala return (EINVAL); 189851be90b5SEdward Tomasz Napierala 189951be90b5SEdward Tomasz Napierala sx_xlock(&sc->sc_lock); 190051be90b5SEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 190151be90b5SEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 190251be90b5SEdward Tomasz Napierala if (is->is_id == ism->ism_session_id) 190351be90b5SEdward Tomasz Napierala break; 190451be90b5SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 190551be90b5SEdward Tomasz Napierala } 190651be90b5SEdward Tomasz Napierala if (is == NULL) { 190751be90b5SEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 190851be90b5SEdward Tomasz Napierala return (ESRCH); 190951be90b5SEdward Tomasz Napierala } 191051be90b5SEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 191151be90b5SEdward Tomasz Napierala 191251be90b5SEdward Tomasz Napierala memcpy(&is->is_conf, &ism->ism_conf, sizeof(is->is_conf)); 191351be90b5SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 191451be90b5SEdward Tomasz Napierala 191551be90b5SEdward Tomasz Napierala iscsi_session_reconnect(is); 191651be90b5SEdward Tomasz Napierala 191751be90b5SEdward Tomasz Napierala return (0); 191851be90b5SEdward Tomasz Napierala } 191951be90b5SEdward Tomasz Napierala 192051be90b5SEdward Tomasz Napierala static int 1921009ea47eSEdward Tomasz Napierala iscsi_ioctl(struct cdev *dev, u_long cmd, caddr_t arg, int mode, 1922009ea47eSEdward Tomasz Napierala struct thread *td) 1923009ea47eSEdward Tomasz Napierala { 1924009ea47eSEdward Tomasz Napierala struct iscsi_softc *sc; 1925009ea47eSEdward Tomasz Napierala 1926009ea47eSEdward Tomasz Napierala sc = dev->si_drv1; 1927009ea47eSEdward Tomasz Napierala 1928009ea47eSEdward Tomasz Napierala switch (cmd) { 1929009ea47eSEdward Tomasz Napierala case ISCSIDWAIT: 1930009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_wait(sc, 1931009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_request *)arg)); 1932009ea47eSEdward Tomasz Napierala case ISCSIDHANDOFF: 1933009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_handoff(sc, 1934009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_handoff *)arg)); 1935009ea47eSEdward Tomasz Napierala case ISCSIDFAIL: 1936009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_fail(sc, 1937009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_fail *)arg)); 1938009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 1939009ea47eSEdward Tomasz Napierala case ISCSIDCONNECT: 1940009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_connect(sc, 1941009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_connect *)arg)); 1942009ea47eSEdward Tomasz Napierala case ISCSIDSEND: 1943009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_send(sc, 1944009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_send *)arg)); 1945009ea47eSEdward Tomasz Napierala case ISCSIDRECEIVE: 1946009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_receive(sc, 1947009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_receive *)arg)); 1948009ea47eSEdward Tomasz Napierala #endif /* ICL_KERNEL_PROXY */ 1949009ea47eSEdward Tomasz Napierala case ISCSISADD: 1950009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_session_add(sc, 1951009ea47eSEdward Tomasz Napierala (struct iscsi_session_add *)arg)); 1952009ea47eSEdward Tomasz Napierala case ISCSISREMOVE: 1953009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_session_remove(sc, 1954009ea47eSEdward Tomasz Napierala (struct iscsi_session_remove *)arg)); 1955009ea47eSEdward Tomasz Napierala case ISCSISLIST: 1956009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_session_list(sc, 1957009ea47eSEdward Tomasz Napierala (struct iscsi_session_list *)arg)); 195851be90b5SEdward Tomasz Napierala case ISCSISMODIFY: 195951be90b5SEdward Tomasz Napierala return (iscsi_ioctl_session_modify(sc, 196051be90b5SEdward Tomasz Napierala (struct iscsi_session_modify *)arg)); 1961009ea47eSEdward Tomasz Napierala default: 1962009ea47eSEdward Tomasz Napierala return (EINVAL); 1963009ea47eSEdward Tomasz Napierala } 1964009ea47eSEdward Tomasz Napierala } 1965009ea47eSEdward Tomasz Napierala 1966009ea47eSEdward Tomasz Napierala static struct iscsi_outstanding * 1967009ea47eSEdward Tomasz Napierala iscsi_outstanding_find(struct iscsi_session *is, uint32_t initiator_task_tag) 1968009ea47eSEdward Tomasz Napierala { 1969009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io; 1970009ea47eSEdward Tomasz Napierala 1971009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 1972009ea47eSEdward Tomasz Napierala 1973009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(io, &is->is_outstanding, io_next) { 1974009ea47eSEdward Tomasz Napierala if (io->io_initiator_task_tag == initiator_task_tag) 1975009ea47eSEdward Tomasz Napierala return (io); 1976009ea47eSEdward Tomasz Napierala } 1977009ea47eSEdward Tomasz Napierala return (NULL); 1978009ea47eSEdward Tomasz Napierala } 1979009ea47eSEdward Tomasz Napierala 1980aa75114cSAlexander Motin static struct iscsi_outstanding * 1981aa75114cSAlexander Motin iscsi_outstanding_find_ccb(struct iscsi_session *is, union ccb *ccb) 1982aa75114cSAlexander Motin { 1983aa75114cSAlexander Motin struct iscsi_outstanding *io; 1984aa75114cSAlexander Motin 1985aa75114cSAlexander Motin ISCSI_SESSION_LOCK_ASSERT(is); 1986aa75114cSAlexander Motin 1987aa75114cSAlexander Motin TAILQ_FOREACH(io, &is->is_outstanding, io_next) { 1988aa75114cSAlexander Motin if (io->io_ccb == ccb) 1989aa75114cSAlexander Motin return (io); 1990aa75114cSAlexander Motin } 1991aa75114cSAlexander Motin return (NULL); 1992aa75114cSAlexander Motin } 1993aa75114cSAlexander Motin 1994aa75114cSAlexander Motin static struct iscsi_outstanding * 1995009ea47eSEdward Tomasz Napierala iscsi_outstanding_add(struct iscsi_session *is, 1996*7a03d007SEdward Tomasz Napierala union ccb *ccb, uint32_t *initiator_task_tagp) 1997009ea47eSEdward Tomasz Napierala { 1998009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io; 1999*7a03d007SEdward Tomasz Napierala int error; 2000009ea47eSEdward Tomasz Napierala 2001009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 2002009ea47eSEdward Tomasz Napierala 2003009ea47eSEdward Tomasz Napierala io = uma_zalloc(iscsi_outstanding_zone, M_NOWAIT | M_ZERO); 2004009ea47eSEdward Tomasz Napierala if (io == NULL) { 2005*7a03d007SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate %zd bytes", 2006*7a03d007SEdward Tomasz Napierala sizeof(*io)); 2007aa75114cSAlexander Motin return (NULL); 2008009ea47eSEdward Tomasz Napierala } 2009*7a03d007SEdward Tomasz Napierala 2010*7a03d007SEdward Tomasz Napierala error = icl_conn_task_setup(is->is_conn, &ccb->csio, 2011*7a03d007SEdward Tomasz Napierala initiator_task_tagp, &io->io_icl_prv); 2012*7a03d007SEdward Tomasz Napierala if (error != 0) { 2013*7a03d007SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, 2014*7a03d007SEdward Tomasz Napierala "icl_conn_task_setup() failed with error %d", error); 2015*7a03d007SEdward Tomasz Napierala uma_zfree(iscsi_outstanding_zone, io); 2016*7a03d007SEdward Tomasz Napierala return (NULL); 2017*7a03d007SEdward Tomasz Napierala } 2018*7a03d007SEdward Tomasz Napierala 2019*7a03d007SEdward Tomasz Napierala KASSERT(iscsi_outstanding_find(is, *initiator_task_tagp) == NULL, 2020*7a03d007SEdward Tomasz Napierala ("initiator_task_tag 0x%x already added", *initiator_task_tagp)); 2021*7a03d007SEdward Tomasz Napierala 2022*7a03d007SEdward Tomasz Napierala io->io_initiator_task_tag = *initiator_task_tagp; 2023009ea47eSEdward Tomasz Napierala io->io_ccb = ccb; 2024009ea47eSEdward Tomasz Napierala TAILQ_INSERT_TAIL(&is->is_outstanding, io, io_next); 2025aa75114cSAlexander Motin return (io); 2026009ea47eSEdward Tomasz Napierala } 2027009ea47eSEdward Tomasz Napierala 2028009ea47eSEdward Tomasz Napierala static void 2029009ea47eSEdward Tomasz Napierala iscsi_outstanding_remove(struct iscsi_session *is, struct iscsi_outstanding *io) 2030009ea47eSEdward Tomasz Napierala { 2031009ea47eSEdward Tomasz Napierala 2032009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 2033009ea47eSEdward Tomasz Napierala 2034*7a03d007SEdward Tomasz Napierala icl_conn_task_done(is->is_conn, io->io_icl_prv); 2035009ea47eSEdward Tomasz Napierala TAILQ_REMOVE(&is->is_outstanding, io, io_next); 2036009ea47eSEdward Tomasz Napierala uma_zfree(iscsi_outstanding_zone, io); 2037009ea47eSEdward Tomasz Napierala } 2038009ea47eSEdward Tomasz Napierala 2039009ea47eSEdward Tomasz Napierala static void 2040aa75114cSAlexander Motin iscsi_action_abort(struct iscsi_session *is, union ccb *ccb) 2041aa75114cSAlexander Motin { 2042aa75114cSAlexander Motin struct icl_pdu *request; 2043aa75114cSAlexander Motin struct iscsi_bhs_task_management_request *bhstmr; 2044aa75114cSAlexander Motin struct ccb_abort *cab = &ccb->cab; 2045aa75114cSAlexander Motin struct iscsi_outstanding *io, *aio; 2046*7a03d007SEdward Tomasz Napierala uint32_t initiator_task_tag; 2047aa75114cSAlexander Motin 2048aa75114cSAlexander Motin ISCSI_SESSION_LOCK_ASSERT(is); 2049aa75114cSAlexander Motin 2050aa75114cSAlexander Motin #if 0 2051aa75114cSAlexander Motin KASSERT(is->is_login_phase == false, ("%s called during Login Phase", __func__)); 2052aa75114cSAlexander Motin #else 2053aa75114cSAlexander Motin if (is->is_login_phase) { 2054aa75114cSAlexander Motin ccb->ccb_h.status = CAM_REQ_ABORTED; 2055aa75114cSAlexander Motin xpt_done(ccb); 2056aa75114cSAlexander Motin return; 2057aa75114cSAlexander Motin } 2058aa75114cSAlexander Motin #endif 2059aa75114cSAlexander Motin 2060aa75114cSAlexander Motin aio = iscsi_outstanding_find_ccb(is, cab->abort_ccb); 2061aa75114cSAlexander Motin if (aio == NULL) { 2062aa75114cSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP; 2063aa75114cSAlexander Motin xpt_done(ccb); 2064aa75114cSAlexander Motin return; 2065aa75114cSAlexander Motin } 2066aa75114cSAlexander Motin 2067d2d52b00SEdward Tomasz Napierala request = icl_pdu_new(is->is_conn, M_NOWAIT); 2068aa75114cSAlexander Motin if (request == NULL) { 2069aa75114cSAlexander Motin ccb->ccb_h.status = CAM_RESRC_UNAVAIL; 2070aa75114cSAlexander Motin xpt_done(ccb); 2071aa75114cSAlexander Motin return; 2072aa75114cSAlexander Motin } 2073aa75114cSAlexander Motin 2074*7a03d007SEdward Tomasz Napierala initiator_task_tag = is->is_initiator_task_tag++; 2075aa75114cSAlexander Motin 2076*7a03d007SEdward Tomasz Napierala io = iscsi_outstanding_add(is, NULL, &initiator_task_tag); 2077aa75114cSAlexander Motin if (io == NULL) { 2078aa75114cSAlexander Motin icl_pdu_free(request); 2079aa75114cSAlexander Motin ccb->ccb_h.status = CAM_RESRC_UNAVAIL; 2080aa75114cSAlexander Motin xpt_done(ccb); 2081aa75114cSAlexander Motin return; 2082aa75114cSAlexander Motin } 2083aa75114cSAlexander Motin io->io_datasn = aio->io_initiator_task_tag; 2084*7a03d007SEdward Tomasz Napierala 2085*7a03d007SEdward Tomasz Napierala bhstmr = (struct iscsi_bhs_task_management_request *)request->ip_bhs; 2086*7a03d007SEdward Tomasz Napierala bhstmr->bhstmr_opcode = ISCSI_BHS_OPCODE_TASK_REQUEST; 2087*7a03d007SEdward Tomasz Napierala bhstmr->bhstmr_function = 0x80 | BHSTMR_FUNCTION_ABORT_TASK; 2088*7a03d007SEdward Tomasz Napierala bhstmr->bhstmr_lun = htobe64(CAM_EXTLUN_BYTE_SWIZZLE(ccb->ccb_h.target_lun)); 2089*7a03d007SEdward Tomasz Napierala bhstmr->bhstmr_initiator_task_tag = initiator_task_tag; 2090*7a03d007SEdward Tomasz Napierala bhstmr->bhstmr_referenced_task_tag = aio->io_initiator_task_tag; 2091*7a03d007SEdward Tomasz Napierala 2092aa75114cSAlexander Motin iscsi_pdu_queue_locked(request); 2093aa75114cSAlexander Motin } 2094aa75114cSAlexander Motin 2095aa75114cSAlexander Motin static void 2096009ea47eSEdward Tomasz Napierala iscsi_action_scsiio(struct iscsi_session *is, union ccb *ccb) 2097009ea47eSEdward Tomasz Napierala { 2098009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 2099009ea47eSEdward Tomasz Napierala struct iscsi_bhs_scsi_command *bhssc; 2100009ea47eSEdward Tomasz Napierala struct ccb_scsiio *csio; 2101aa75114cSAlexander Motin struct iscsi_outstanding *io; 2102009ea47eSEdward Tomasz Napierala size_t len; 2103*7a03d007SEdward Tomasz Napierala uint32_t initiator_task_tag; 2104009ea47eSEdward Tomasz Napierala int error; 2105009ea47eSEdward Tomasz Napierala 2106009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 2107009ea47eSEdward Tomasz Napierala 2108009ea47eSEdward Tomasz Napierala #if 0 2109009ea47eSEdward Tomasz Napierala KASSERT(is->is_login_phase == false, ("%s called during Login Phase", __func__)); 2110009ea47eSEdward Tomasz Napierala #else 2111009ea47eSEdward Tomasz Napierala if (is->is_login_phase) { 2112009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "called during login phase"); 2113009ea47eSEdward Tomasz Napierala if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 2114009ea47eSEdward Tomasz Napierala xpt_freeze_devq(ccb->ccb_h.path, 1); 2115009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 2116009ea47eSEdward Tomasz Napierala } 2117009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_REQ_ABORTED | CAM_DEV_QFRZN; 2118009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2119009ea47eSEdward Tomasz Napierala return; 2120009ea47eSEdward Tomasz Napierala } 2121009ea47eSEdward Tomasz Napierala #endif 2122009ea47eSEdward Tomasz Napierala 2123d2d52b00SEdward Tomasz Napierala request = icl_pdu_new(is->is_conn, M_NOWAIT); 2124009ea47eSEdward Tomasz Napierala if (request == NULL) { 2125009ea47eSEdward Tomasz Napierala if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 2126009ea47eSEdward Tomasz Napierala xpt_freeze_devq(ccb->ccb_h.path, 1); 2127009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 2128009ea47eSEdward Tomasz Napierala } 2129009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_RESRC_UNAVAIL | CAM_DEV_QFRZN; 2130009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2131009ea47eSEdward Tomasz Napierala return; 2132009ea47eSEdward Tomasz Napierala } 2133009ea47eSEdward Tomasz Napierala 2134*7a03d007SEdward Tomasz Napierala initiator_task_tag = is->is_initiator_task_tag++; 2135*7a03d007SEdward Tomasz Napierala io = iscsi_outstanding_add(is, ccb, &initiator_task_tag); 2136*7a03d007SEdward Tomasz Napierala if (io == NULL) { 2137*7a03d007SEdward Tomasz Napierala icl_pdu_free(request); 2138*7a03d007SEdward Tomasz Napierala if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 2139*7a03d007SEdward Tomasz Napierala xpt_freeze_devq(ccb->ccb_h.path, 1); 2140*7a03d007SEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 2141*7a03d007SEdward Tomasz Napierala } 2142*7a03d007SEdward Tomasz Napierala ccb->ccb_h.status = CAM_RESRC_UNAVAIL | CAM_DEV_QFRZN; 2143*7a03d007SEdward Tomasz Napierala xpt_done(ccb); 2144*7a03d007SEdward Tomasz Napierala return; 2145*7a03d007SEdward Tomasz Napierala } 2146*7a03d007SEdward Tomasz Napierala 2147009ea47eSEdward Tomasz Napierala csio = &ccb->csio; 2148009ea47eSEdward Tomasz Napierala bhssc = (struct iscsi_bhs_scsi_command *)request->ip_bhs; 2149009ea47eSEdward Tomasz Napierala bhssc->bhssc_opcode = ISCSI_BHS_OPCODE_SCSI_COMMAND; 2150009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_F; 2151009ea47eSEdward Tomasz Napierala switch (csio->ccb_h.flags & CAM_DIR_MASK) { 2152009ea47eSEdward Tomasz Napierala case CAM_DIR_IN: 2153009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_R; 2154009ea47eSEdward Tomasz Napierala break; 2155009ea47eSEdward Tomasz Napierala case CAM_DIR_OUT: 2156009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_W; 2157009ea47eSEdward Tomasz Napierala break; 2158009ea47eSEdward Tomasz Napierala } 2159009ea47eSEdward Tomasz Napierala 2160462cf3baSAlexander Motin if ((ccb->ccb_h.flags & CAM_TAG_ACTION_VALID) != 0) { 2161009ea47eSEdward Tomasz Napierala switch (csio->tag_action) { 2162009ea47eSEdward Tomasz Napierala case MSG_HEAD_OF_Q_TAG: 2163009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_HOQ; 2164009ea47eSEdward Tomasz Napierala break; 2165009ea47eSEdward Tomasz Napierala case MSG_ORDERED_Q_TAG: 2166009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_ORDERED; 2167009ea47eSEdward Tomasz Napierala break; 2168009ea47eSEdward Tomasz Napierala case MSG_ACA_TASK: 2169009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_ACA; 2170009ea47eSEdward Tomasz Napierala break; 2171009ea47eSEdward Tomasz Napierala case MSG_SIMPLE_Q_TAG: 2172009ea47eSEdward Tomasz Napierala default: 2173009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_SIMPLE; 2174009ea47eSEdward Tomasz Napierala break; 2175009ea47eSEdward Tomasz Napierala } 2176462cf3baSAlexander Motin } else 2177462cf3baSAlexander Motin bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_UNTAGGED; 2178009ea47eSEdward Tomasz Napierala 2179a9f2f291SEdward Tomasz Napierala bhssc->bhssc_lun = htobe64(CAM_EXTLUN_BYTE_SWIZZLE(ccb->ccb_h.target_lun)); 2180*7a03d007SEdward Tomasz Napierala bhssc->bhssc_initiator_task_tag = initiator_task_tag; 2181009ea47eSEdward Tomasz Napierala bhssc->bhssc_expected_data_transfer_length = htonl(csio->dxfer_len); 2182009ea47eSEdward Tomasz Napierala KASSERT(csio->cdb_len <= sizeof(bhssc->bhssc_cdb), 2183009ea47eSEdward Tomasz Napierala ("unsupported CDB size %zd", (size_t)csio->cdb_len)); 2184009ea47eSEdward Tomasz Napierala 2185009ea47eSEdward Tomasz Napierala if (csio->ccb_h.flags & CAM_CDB_POINTER) 2186009ea47eSEdward Tomasz Napierala memcpy(&bhssc->bhssc_cdb, csio->cdb_io.cdb_ptr, csio->cdb_len); 2187009ea47eSEdward Tomasz Napierala else 2188009ea47eSEdward Tomasz Napierala memcpy(&bhssc->bhssc_cdb, csio->cdb_io.cdb_bytes, csio->cdb_len); 2189009ea47eSEdward Tomasz Napierala 2190009ea47eSEdward Tomasz Napierala if (is->is_immediate_data && 2191009ea47eSEdward Tomasz Napierala (csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT) { 2192009ea47eSEdward Tomasz Napierala len = csio->dxfer_len; 2193009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "adding %zd of immediate data", len); 2194009ea47eSEdward Tomasz Napierala if (len > is->is_first_burst_length) { 2195009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "len %zd -> %zd", len, is->is_first_burst_length); 2196009ea47eSEdward Tomasz Napierala len = is->is_first_burst_length; 2197009ea47eSEdward Tomasz Napierala } 21983f9e1172SAlexander Motin if (len > is->is_max_data_segment_length) { 21993f9e1172SAlexander Motin ISCSI_SESSION_DEBUG(is, "len %zd -> %zd", len, is->is_max_data_segment_length); 22003f9e1172SAlexander Motin len = is->is_max_data_segment_length; 22013f9e1172SAlexander Motin } 2202009ea47eSEdward Tomasz Napierala 2203009ea47eSEdward Tomasz Napierala error = icl_pdu_append_data(request, csio->data_ptr, len, M_NOWAIT); 2204009ea47eSEdward Tomasz Napierala if (error != 0) { 2205009ea47eSEdward Tomasz Napierala icl_pdu_free(request); 2206009ea47eSEdward Tomasz Napierala if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 2207009ea47eSEdward Tomasz Napierala xpt_freeze_devq(ccb->ccb_h.path, 1); 2208009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 2209009ea47eSEdward Tomasz Napierala } 2210009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_RESRC_UNAVAIL | CAM_DEV_QFRZN; 2211009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2212009ea47eSEdward Tomasz Napierala return; 2213009ea47eSEdward Tomasz Napierala } 2214009ea47eSEdward Tomasz Napierala } 2215009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(request); 2216009ea47eSEdward Tomasz Napierala } 2217009ea47eSEdward Tomasz Napierala 2218009ea47eSEdward Tomasz Napierala static void 2219009ea47eSEdward Tomasz Napierala iscsi_action(struct cam_sim *sim, union ccb *ccb) 2220009ea47eSEdward Tomasz Napierala { 2221009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 2222009ea47eSEdward Tomasz Napierala 2223009ea47eSEdward Tomasz Napierala is = cam_sim_softc(sim); 2224009ea47eSEdward Tomasz Napierala 2225009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 2226009ea47eSEdward Tomasz Napierala 2227f1f12e40SEdward Tomasz Napierala if (is->is_terminating || 2228f1f12e40SEdward Tomasz Napierala (is->is_connected == false && fail_on_disconnection)) { 2229009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_DEV_NOT_THERE; 2230009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2231009ea47eSEdward Tomasz Napierala return; 2232009ea47eSEdward Tomasz Napierala } 2233009ea47eSEdward Tomasz Napierala 2234009ea47eSEdward Tomasz Napierala switch (ccb->ccb_h.func_code) { 2235009ea47eSEdward Tomasz Napierala case XPT_PATH_INQ: 2236009ea47eSEdward Tomasz Napierala { 2237009ea47eSEdward Tomasz Napierala struct ccb_pathinq *cpi = &ccb->cpi; 2238009ea47eSEdward Tomasz Napierala 2239009ea47eSEdward Tomasz Napierala cpi->version_num = 1; 2240009ea47eSEdward Tomasz Napierala cpi->hba_inquiry = PI_TAG_ABLE; 2241009ea47eSEdward Tomasz Napierala cpi->target_sprt = 0; 2242a9f2f291SEdward Tomasz Napierala cpi->hba_misc = PIM_EXTLUNS; 2243009ea47eSEdward Tomasz Napierala cpi->hba_eng_cnt = 0; 2244009ea47eSEdward Tomasz Napierala cpi->max_target = 0; 224517cf3eb1SEdward Tomasz Napierala /* 224617cf3eb1SEdward Tomasz Napierala * Note that the variable below is only relevant for targets 224717cf3eb1SEdward Tomasz Napierala * that don't claim compliance with anything above SPC2, which 224817cf3eb1SEdward Tomasz Napierala * means they don't support REPORT_LUNS. 224917cf3eb1SEdward Tomasz Napierala */ 225017cf3eb1SEdward Tomasz Napierala cpi->max_lun = 255; 2251a9f2f291SEdward Tomasz Napierala cpi->initiator_id = ~0; 22527843bd03SEdward Tomasz Napierala strlcpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); 22537843bd03SEdward Tomasz Napierala strlcpy(cpi->hba_vid, "iSCSI", HBA_IDLEN); 22547843bd03SEdward Tomasz Napierala strlcpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); 2255009ea47eSEdward Tomasz Napierala cpi->unit_number = cam_sim_unit(sim); 2256009ea47eSEdward Tomasz Napierala cpi->bus_id = cam_sim_bus(sim); 2257009ea47eSEdward Tomasz Napierala cpi->base_transfer_speed = 150000; /* XXX */ 2258009ea47eSEdward Tomasz Napierala cpi->transport = XPORT_ISCSI; 2259009ea47eSEdward Tomasz Napierala cpi->transport_version = 0; 2260009ea47eSEdward Tomasz Napierala cpi->protocol = PROTO_SCSI; 2261009ea47eSEdward Tomasz Napierala cpi->protocol_version = SCSI_REV_SPC3; 2262009ea47eSEdward Tomasz Napierala cpi->maxio = MAXPHYS; 2263009ea47eSEdward Tomasz Napierala cpi->ccb_h.status = CAM_REQ_CMP; 2264009ea47eSEdward Tomasz Napierala break; 2265009ea47eSEdward Tomasz Napierala } 2266462cf3baSAlexander Motin case XPT_GET_TRAN_SETTINGS: 2267462cf3baSAlexander Motin { 2268462cf3baSAlexander Motin struct ccb_trans_settings *cts; 2269462cf3baSAlexander Motin struct ccb_trans_settings_scsi *scsi; 2270462cf3baSAlexander Motin 2271462cf3baSAlexander Motin cts = &ccb->cts; 2272462cf3baSAlexander Motin scsi = &cts->proto_specific.scsi; 2273462cf3baSAlexander Motin 2274462cf3baSAlexander Motin cts->protocol = PROTO_SCSI; 2275462cf3baSAlexander Motin cts->protocol_version = SCSI_REV_SPC3; 2276462cf3baSAlexander Motin cts->transport = XPORT_ISCSI; 2277462cf3baSAlexander Motin cts->transport_version = 0; 2278462cf3baSAlexander Motin scsi->valid = CTS_SCSI_VALID_TQ; 2279462cf3baSAlexander Motin scsi->flags = CTS_SCSI_FLAGS_TAG_ENB; 2280462cf3baSAlexander Motin cts->ccb_h.status = CAM_REQ_CMP; 2281462cf3baSAlexander Motin break; 2282462cf3baSAlexander Motin } 2283009ea47eSEdward Tomasz Napierala case XPT_CALC_GEOMETRY: 2284009ea47eSEdward Tomasz Napierala cam_calc_geometry(&ccb->ccg, /*extended*/1); 2285009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_REQ_CMP; 2286009ea47eSEdward Tomasz Napierala break; 2287009ea47eSEdward Tomasz Napierala #if 0 2288009ea47eSEdward Tomasz Napierala /* 2289009ea47eSEdward Tomasz Napierala * XXX: What's the point? 2290009ea47eSEdward Tomasz Napierala */ 2291009ea47eSEdward Tomasz Napierala case XPT_RESET_BUS: 2292009ea47eSEdward Tomasz Napierala case XPT_TERM_IO: 2293009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "faking success for reset, abort, or term_io"); 2294009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_REQ_CMP; 2295009ea47eSEdward Tomasz Napierala break; 2296009ea47eSEdward Tomasz Napierala #endif 2297aa75114cSAlexander Motin case XPT_ABORT: 2298aa75114cSAlexander Motin iscsi_action_abort(is, ccb); 2299aa75114cSAlexander Motin return; 2300009ea47eSEdward Tomasz Napierala case XPT_SCSI_IO: 2301009ea47eSEdward Tomasz Napierala iscsi_action_scsiio(is, ccb); 2302009ea47eSEdward Tomasz Napierala return; 2303009ea47eSEdward Tomasz Napierala default: 2304009ea47eSEdward Tomasz Napierala #if 0 2305009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "got unsupported code 0x%x", ccb->ccb_h.func_code); 2306009ea47eSEdward Tomasz Napierala #endif 2307009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_FUNC_NOTAVAIL; 2308009ea47eSEdward Tomasz Napierala break; 2309009ea47eSEdward Tomasz Napierala } 2310009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2311009ea47eSEdward Tomasz Napierala } 2312009ea47eSEdward Tomasz Napierala 2313009ea47eSEdward Tomasz Napierala static void 2314009ea47eSEdward Tomasz Napierala iscsi_poll(struct cam_sim *sim) 2315009ea47eSEdward Tomasz Napierala { 2316009ea47eSEdward Tomasz Napierala 2317009ea47eSEdward Tomasz Napierala KASSERT(0, ("%s: you're not supposed to be here", __func__)); 2318009ea47eSEdward Tomasz Napierala } 2319009ea47eSEdward Tomasz Napierala 2320009ea47eSEdward Tomasz Napierala static void 2321009ea47eSEdward Tomasz Napierala iscsi_shutdown(struct iscsi_softc *sc) 2322009ea47eSEdward Tomasz Napierala { 2323009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 2324009ea47eSEdward Tomasz Napierala 2325009ea47eSEdward Tomasz Napierala ISCSI_DEBUG("removing all sessions due to shutdown"); 2326009ea47eSEdward Tomasz Napierala 2327009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 2328009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) 2329009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 2330009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 2331009ea47eSEdward Tomasz Napierala } 2332009ea47eSEdward Tomasz Napierala 2333009ea47eSEdward Tomasz Napierala static int 2334009ea47eSEdward Tomasz Napierala iscsi_load(void) 2335009ea47eSEdward Tomasz Napierala { 2336009ea47eSEdward Tomasz Napierala int error; 2337009ea47eSEdward Tomasz Napierala 2338009ea47eSEdward Tomasz Napierala sc = malloc(sizeof(*sc), M_ISCSI, M_ZERO | M_WAITOK); 2339009ea47eSEdward Tomasz Napierala sx_init(&sc->sc_lock, "iscsi"); 2340009ea47eSEdward Tomasz Napierala TAILQ_INIT(&sc->sc_sessions); 2341009ea47eSEdward Tomasz Napierala cv_init(&sc->sc_cv, "iscsi_cv"); 2342009ea47eSEdward Tomasz Napierala 2343009ea47eSEdward Tomasz Napierala iscsi_outstanding_zone = uma_zcreate("iscsi_outstanding", 2344009ea47eSEdward Tomasz Napierala sizeof(struct iscsi_outstanding), NULL, NULL, NULL, NULL, 2345c28c09c1SEdward Tomasz Napierala UMA_ALIGN_PTR, 0); 2346009ea47eSEdward Tomasz Napierala 2347009ea47eSEdward Tomasz Napierala error = make_dev_p(MAKEDEV_CHECKNAME, &sc->sc_cdev, &iscsi_cdevsw, 2348009ea47eSEdward Tomasz Napierala NULL, UID_ROOT, GID_WHEEL, 0600, "iscsi"); 2349009ea47eSEdward Tomasz Napierala if (error != 0) { 2350009ea47eSEdward Tomasz Napierala ISCSI_WARN("failed to create device node, error %d", error); 2351009ea47eSEdward Tomasz Napierala return (error); 2352009ea47eSEdward Tomasz Napierala } 2353009ea47eSEdward Tomasz Napierala sc->sc_cdev->si_drv1 = sc; 2354009ea47eSEdward Tomasz Napierala 2355009ea47eSEdward Tomasz Napierala /* 2356c4dfe4abSEdward Tomasz Napierala * Note that this needs to get run before dashutdown(). Otherwise, 2357c4dfe4abSEdward Tomasz Napierala * when rebooting with iSCSI session with outstanding requests, 2358c4dfe4abSEdward Tomasz Napierala * but disconnected, dashutdown() will hang on cam_periph_runccb(). 2359009ea47eSEdward Tomasz Napierala */ 2360c4dfe4abSEdward Tomasz Napierala sc->sc_shutdown_eh = EVENTHANDLER_REGISTER(shutdown_post_sync, 2361c4dfe4abSEdward Tomasz Napierala iscsi_shutdown, sc, SHUTDOWN_PRI_FIRST); 2362009ea47eSEdward Tomasz Napierala 2363009ea47eSEdward Tomasz Napierala return (0); 2364009ea47eSEdward Tomasz Napierala } 2365009ea47eSEdward Tomasz Napierala 2366009ea47eSEdward Tomasz Napierala static int 2367009ea47eSEdward Tomasz Napierala iscsi_unload(void) 2368009ea47eSEdward Tomasz Napierala { 2369009ea47eSEdward Tomasz Napierala struct iscsi_session *is, *tmp; 2370009ea47eSEdward Tomasz Napierala 2371a667cf73SEdward Tomasz Napierala if (sc->sc_cdev != NULL) { 2372009ea47eSEdward Tomasz Napierala ISCSI_DEBUG("removing device node"); 2373009ea47eSEdward Tomasz Napierala destroy_dev(sc->sc_cdev); 2374009ea47eSEdward Tomasz Napierala ISCSI_DEBUG("device node removed"); 2375a667cf73SEdward Tomasz Napierala } 2376009ea47eSEdward Tomasz Napierala 2377a667cf73SEdward Tomasz Napierala if (sc->sc_shutdown_eh != NULL) 2378009ea47eSEdward Tomasz Napierala EVENTHANDLER_DEREGISTER(shutdown_post_sync, sc->sc_shutdown_eh); 2379009ea47eSEdward Tomasz Napierala 2380009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 2381009ea47eSEdward Tomasz Napierala TAILQ_FOREACH_SAFE(is, &sc->sc_sessions, is_next, tmp) 2382009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 2383009ea47eSEdward Tomasz Napierala while(!TAILQ_EMPTY(&sc->sc_sessions)) { 2384009ea47eSEdward Tomasz Napierala ISCSI_DEBUG("waiting for sessions to terminate"); 2385009ea47eSEdward Tomasz Napierala cv_wait(&sc->sc_cv, &sc->sc_lock); 2386009ea47eSEdward Tomasz Napierala } 2387009ea47eSEdward Tomasz Napierala ISCSI_DEBUG("all sessions terminated"); 2388009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 2389009ea47eSEdward Tomasz Napierala 2390009ea47eSEdward Tomasz Napierala uma_zdestroy(iscsi_outstanding_zone); 2391009ea47eSEdward Tomasz Napierala sx_destroy(&sc->sc_lock); 2392009ea47eSEdward Tomasz Napierala cv_destroy(&sc->sc_cv); 2393009ea47eSEdward Tomasz Napierala free(sc, M_ISCSI); 2394009ea47eSEdward Tomasz Napierala return (0); 2395009ea47eSEdward Tomasz Napierala } 2396009ea47eSEdward Tomasz Napierala 2397009ea47eSEdward Tomasz Napierala static int 2398009ea47eSEdward Tomasz Napierala iscsi_quiesce(void) 2399009ea47eSEdward Tomasz Napierala { 2400009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 2401009ea47eSEdward Tomasz Napierala if (!TAILQ_EMPTY(&sc->sc_sessions)) { 2402009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 2403009ea47eSEdward Tomasz Napierala return (EBUSY); 2404009ea47eSEdward Tomasz Napierala } 2405009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 2406009ea47eSEdward Tomasz Napierala return (0); 2407009ea47eSEdward Tomasz Napierala } 2408009ea47eSEdward Tomasz Napierala 2409009ea47eSEdward Tomasz Napierala static int 2410009ea47eSEdward Tomasz Napierala iscsi_modevent(module_t mod, int what, void *arg) 2411009ea47eSEdward Tomasz Napierala { 2412009ea47eSEdward Tomasz Napierala int error; 2413009ea47eSEdward Tomasz Napierala 2414009ea47eSEdward Tomasz Napierala switch (what) { 2415009ea47eSEdward Tomasz Napierala case MOD_LOAD: 2416009ea47eSEdward Tomasz Napierala error = iscsi_load(); 2417009ea47eSEdward Tomasz Napierala break; 2418009ea47eSEdward Tomasz Napierala case MOD_UNLOAD: 2419009ea47eSEdward Tomasz Napierala error = iscsi_unload(); 2420009ea47eSEdward Tomasz Napierala break; 2421009ea47eSEdward Tomasz Napierala case MOD_QUIESCE: 2422009ea47eSEdward Tomasz Napierala error = iscsi_quiesce(); 2423009ea47eSEdward Tomasz Napierala break; 2424009ea47eSEdward Tomasz Napierala default: 2425009ea47eSEdward Tomasz Napierala error = EINVAL; 2426009ea47eSEdward Tomasz Napierala break; 2427009ea47eSEdward Tomasz Napierala } 2428009ea47eSEdward Tomasz Napierala return (error); 2429009ea47eSEdward Tomasz Napierala } 2430009ea47eSEdward Tomasz Napierala 2431009ea47eSEdward Tomasz Napierala moduledata_t iscsi_data = { 2432009ea47eSEdward Tomasz Napierala "iscsi", 2433009ea47eSEdward Tomasz Napierala iscsi_modevent, 2434009ea47eSEdward Tomasz Napierala 0 2435009ea47eSEdward Tomasz Napierala }; 2436009ea47eSEdward Tomasz Napierala 2437009ea47eSEdward Tomasz Napierala DECLARE_MODULE(iscsi, iscsi_data, SI_SUB_DRIVERS, SI_ORDER_MIDDLE); 2438009ea47eSEdward Tomasz Napierala MODULE_DEPEND(iscsi, cam, 1, 1, 1); 2439009ea47eSEdward Tomasz Napierala MODULE_DEPEND(iscsi, icl, 1, 1, 1); 2440