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> 63ddc5fd90SEdward Tomasz Napierala #include <dev/iscsi/iscsi_ioctl.h> 64ddc5fd90SEdward Tomasz Napierala #include <dev/iscsi/iscsi_proto.h> 65ddc5fd90SEdward Tomasz Napierala #include <dev/iscsi/iscsi.h> 66009ea47eSEdward Tomasz Napierala 67009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 68009ea47eSEdward Tomasz Napierala #include <sys/socketvar.h> 69009ea47eSEdward Tomasz Napierala #endif 70009ea47eSEdward Tomasz Napierala 712ebde326SEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 722ebde326SEdward Tomasz Napierala FEATURE(iscsi_kernel_proxy, "iSCSI initiator built with ICL_KERNEL_PROXY"); 732ebde326SEdward Tomasz Napierala #endif 742ebde326SEdward Tomasz Napierala 75009ea47eSEdward Tomasz Napierala /* 76009ea47eSEdward Tomasz Napierala * XXX: This is global so the iscsi_unload() can access it. 77009ea47eSEdward Tomasz Napierala * Think about how to do this properly. 78009ea47eSEdward Tomasz Napierala */ 79009ea47eSEdward Tomasz Napierala static struct iscsi_softc *sc; 80009ea47eSEdward Tomasz Napierala 81009ea47eSEdward Tomasz Napierala SYSCTL_NODE(_kern, OID_AUTO, iscsi, CTLFLAG_RD, 0, "iSCSI initiator"); 82009ea47eSEdward Tomasz Napierala static int debug = 1; 83605a34b0SEdward Tomasz Napierala SYSCTL_INT(_kern_iscsi, OID_AUTO, debug, CTLFLAG_RWTUN, 841f6b2af2SAlexander Motin &debug, 0, "Enable debug messages"); 85009ea47eSEdward Tomasz Napierala static int ping_timeout = 5; 86605a34b0SEdward Tomasz Napierala SYSCTL_INT(_kern_iscsi, OID_AUTO, ping_timeout, CTLFLAG_RWTUN, &ping_timeout, 871f6b2af2SAlexander Motin 0, "Timeout for ping (NOP-Out) requests, in seconds"); 88009ea47eSEdward Tomasz Napierala static int iscsid_timeout = 60; 89605a34b0SEdward Tomasz Napierala SYSCTL_INT(_kern_iscsi, OID_AUTO, iscsid_timeout, CTLFLAG_RWTUN, &iscsid_timeout, 901f6b2af2SAlexander Motin 0, "Time to wait for iscsid(8) to handle reconnection, in seconds"); 91009ea47eSEdward Tomasz Napierala static int login_timeout = 60; 92605a34b0SEdward Tomasz Napierala SYSCTL_INT(_kern_iscsi, OID_AUTO, login_timeout, CTLFLAG_RWTUN, &login_timeout, 931f6b2af2SAlexander Motin 0, "Time to wait for iscsid(8) to finish Login Phase, in seconds"); 94009ea47eSEdward Tomasz Napierala static int maxtags = 255; 95605a34b0SEdward Tomasz Napierala SYSCTL_INT(_kern_iscsi, OID_AUTO, maxtags, CTLFLAG_RWTUN, &maxtags, 961f6b2af2SAlexander Motin 0, "Max number of IO requests queued"); 97f1f12e40SEdward Tomasz Napierala static int fail_on_disconnection = 0; 98f1f12e40SEdward Tomasz Napierala SYSCTL_INT(_kern_iscsi, OID_AUTO, fail_on_disconnection, CTLFLAG_RWTUN, 99f1f12e40SEdward Tomasz Napierala &fail_on_disconnection, 0, "Destroy CAM SIM on connection failure"); 100009ea47eSEdward Tomasz Napierala 101009ea47eSEdward Tomasz Napierala static MALLOC_DEFINE(M_ISCSI, "iSCSI", "iSCSI initiator"); 102009ea47eSEdward Tomasz Napierala static uma_zone_t iscsi_outstanding_zone; 103009ea47eSEdward Tomasz Napierala 104009ea47eSEdward Tomasz Napierala #define CONN_SESSION(X) ((struct iscsi_session *)X->ic_prv0) 105009ea47eSEdward Tomasz Napierala #define PDU_SESSION(X) (CONN_SESSION(X->ip_conn)) 106009ea47eSEdward Tomasz Napierala 107009ea47eSEdward Tomasz Napierala #define ISCSI_DEBUG(X, ...) \ 108b1277ad1SEdward Tomasz Napierala do { \ 109b1277ad1SEdward Tomasz Napierala if (debug > 1) \ 110009ea47eSEdward Tomasz Napierala printf("%s: " X "\n", __func__, ## __VA_ARGS__);\ 111009ea47eSEdward Tomasz Napierala } while (0) 112009ea47eSEdward Tomasz Napierala 113009ea47eSEdward Tomasz Napierala #define ISCSI_WARN(X, ...) \ 114b1277ad1SEdward Tomasz Napierala do { \ 115009ea47eSEdward Tomasz Napierala if (debug > 0) { \ 116009ea47eSEdward Tomasz Napierala printf("WARNING: %s: " X "\n", \ 117009ea47eSEdward Tomasz Napierala __func__, ## __VA_ARGS__); \ 118b1277ad1SEdward Tomasz Napierala } \ 119009ea47eSEdward Tomasz Napierala } while (0) 120009ea47eSEdward Tomasz Napierala 121009ea47eSEdward Tomasz Napierala #define ISCSI_SESSION_DEBUG(S, X, ...) \ 122b1277ad1SEdward Tomasz Napierala do { \ 123009ea47eSEdward Tomasz Napierala if (debug > 1) { \ 124009ea47eSEdward Tomasz Napierala printf("%s: %s (%s): " X "\n", \ 125009ea47eSEdward Tomasz Napierala __func__, S->is_conf.isc_target_addr, \ 126009ea47eSEdward Tomasz Napierala S->is_conf.isc_target, ## __VA_ARGS__); \ 127b1277ad1SEdward Tomasz Napierala } \ 128009ea47eSEdward Tomasz Napierala } while (0) 129009ea47eSEdward Tomasz Napierala 130009ea47eSEdward Tomasz Napierala #define ISCSI_SESSION_WARN(S, X, ...) \ 131b1277ad1SEdward Tomasz Napierala do { \ 132009ea47eSEdward Tomasz Napierala if (debug > 0) { \ 133009ea47eSEdward Tomasz Napierala printf("WARNING: %s (%s): " X "\n", \ 134009ea47eSEdward Tomasz Napierala S->is_conf.isc_target_addr, \ 135009ea47eSEdward Tomasz Napierala S->is_conf.isc_target, ## __VA_ARGS__); \ 136b1277ad1SEdward Tomasz Napierala } \ 137009ea47eSEdward Tomasz Napierala } while (0) 138009ea47eSEdward Tomasz Napierala 139009ea47eSEdward Tomasz Napierala #define ISCSI_SESSION_LOCK(X) mtx_lock(&X->is_lock) 140009ea47eSEdward Tomasz Napierala #define ISCSI_SESSION_UNLOCK(X) mtx_unlock(&X->is_lock) 141009ea47eSEdward Tomasz Napierala #define ISCSI_SESSION_LOCK_ASSERT(X) mtx_assert(&X->is_lock, MA_OWNED) 142c215ad3aSAlexander Motin #define ISCSI_SESSION_LOCK_ASSERT_NOT(X) mtx_assert(&X->is_lock, MA_NOTOWNED) 143009ea47eSEdward Tomasz Napierala 144009ea47eSEdward Tomasz Napierala static int iscsi_ioctl(struct cdev *dev, u_long cmd, caddr_t arg, 145009ea47eSEdward Tomasz Napierala int mode, struct thread *td); 146009ea47eSEdward Tomasz Napierala 147009ea47eSEdward Tomasz Napierala static struct cdevsw iscsi_cdevsw = { 148009ea47eSEdward Tomasz Napierala .d_version = D_VERSION, 149009ea47eSEdward Tomasz Napierala .d_ioctl = iscsi_ioctl, 150009ea47eSEdward Tomasz Napierala .d_name = "iscsi", 151009ea47eSEdward Tomasz Napierala }; 152009ea47eSEdward Tomasz Napierala 153009ea47eSEdward Tomasz Napierala static void iscsi_pdu_queue_locked(struct icl_pdu *request); 154009ea47eSEdward Tomasz Napierala static void iscsi_pdu_queue(struct icl_pdu *request); 155009ea47eSEdward Tomasz Napierala static void iscsi_pdu_update_statsn(const struct icl_pdu *response); 156009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_nop_in(struct icl_pdu *response); 157009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_scsi_response(struct icl_pdu *response); 158aa75114cSAlexander Motin static void iscsi_pdu_handle_task_response(struct icl_pdu *response); 159009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_data_in(struct icl_pdu *response); 160009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_logout_response(struct icl_pdu *response); 161009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_r2t(struct icl_pdu *response); 162009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_async_message(struct icl_pdu *response); 163009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_reject(struct icl_pdu *response); 164009ea47eSEdward Tomasz Napierala static void iscsi_session_reconnect(struct iscsi_session *is); 165009ea47eSEdward Tomasz Napierala static void iscsi_session_terminate(struct iscsi_session *is); 166009ea47eSEdward Tomasz Napierala static void iscsi_action(struct cam_sim *sim, union ccb *ccb); 167009ea47eSEdward Tomasz Napierala static void iscsi_poll(struct cam_sim *sim); 168009ea47eSEdward Tomasz Napierala static struct iscsi_outstanding *iscsi_outstanding_find(struct iscsi_session *is, 169009ea47eSEdward Tomasz Napierala uint32_t initiator_task_tag); 170aa75114cSAlexander Motin static struct iscsi_outstanding *iscsi_outstanding_add(struct iscsi_session *is, 171009ea47eSEdward Tomasz Napierala uint32_t initiator_task_tag, union ccb *ccb); 172009ea47eSEdward Tomasz Napierala static void iscsi_outstanding_remove(struct iscsi_session *is, 173009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io); 174009ea47eSEdward Tomasz Napierala 175009ea47eSEdward Tomasz Napierala static bool 176009ea47eSEdward Tomasz Napierala iscsi_pdu_prepare(struct icl_pdu *request) 177009ea47eSEdward Tomasz Napierala { 178009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 179009ea47eSEdward Tomasz Napierala struct iscsi_bhs_scsi_command *bhssc; 180009ea47eSEdward Tomasz Napierala 181009ea47eSEdward Tomasz Napierala is = PDU_SESSION(request); 182009ea47eSEdward Tomasz Napierala 183009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 184009ea47eSEdward Tomasz Napierala 185009ea47eSEdward Tomasz Napierala /* 186009ea47eSEdward Tomasz Napierala * We're only using fields common for all the request 187009ea47eSEdward Tomasz Napierala * (initiator -> target) PDUs. 188009ea47eSEdward Tomasz Napierala */ 189009ea47eSEdward Tomasz Napierala bhssc = (struct iscsi_bhs_scsi_command *)request->ip_bhs; 190009ea47eSEdward Tomasz Napierala 191009ea47eSEdward Tomasz Napierala /* 192009ea47eSEdward Tomasz Napierala * Data-Out PDU does not contain CmdSN. 193009ea47eSEdward Tomasz Napierala */ 194009ea47eSEdward Tomasz Napierala if (bhssc->bhssc_opcode != ISCSI_BHS_OPCODE_SCSI_DATA_OUT) { 195*2124e3b0SAlexander Motin if (ISCSI_SNGT(is->is_cmdsn, is->is_maxcmdsn) && 196009ea47eSEdward Tomasz Napierala (bhssc->bhssc_opcode & ISCSI_BHS_OPCODE_IMMEDIATE) == 0) { 197009ea47eSEdward Tomasz Napierala /* 198009ea47eSEdward Tomasz Napierala * Current MaxCmdSN prevents us from sending any more 199009ea47eSEdward Tomasz Napierala * SCSI Command PDUs to the target; postpone the PDU. 200009ea47eSEdward Tomasz Napierala * It will get resent by either iscsi_pdu_queue(), 201009ea47eSEdward Tomasz Napierala * or by maintenance thread. 202009ea47eSEdward Tomasz Napierala */ 203009ea47eSEdward Tomasz Napierala #if 0 204*2124e3b0SAlexander Motin ISCSI_SESSION_DEBUG(is, "postponing send, CmdSN %u, " 205*2124e3b0SAlexander Motin "ExpCmdSN %u, MaxCmdSN %u, opcode 0x%x", 206*2124e3b0SAlexander Motin is->is_cmdsn, is->is_expcmdsn, is->is_maxcmdsn, 207*2124e3b0SAlexander Motin bhssc->bhssc_opcode); 208009ea47eSEdward Tomasz Napierala #endif 209009ea47eSEdward Tomasz Napierala return (true); 210009ea47eSEdward Tomasz Napierala } 211009ea47eSEdward Tomasz Napierala bhssc->bhssc_cmdsn = htonl(is->is_cmdsn); 212009ea47eSEdward Tomasz Napierala if ((bhssc->bhssc_opcode & ISCSI_BHS_OPCODE_IMMEDIATE) == 0) 213009ea47eSEdward Tomasz Napierala is->is_cmdsn++; 214009ea47eSEdward Tomasz Napierala } 215009ea47eSEdward Tomasz Napierala bhssc->bhssc_expstatsn = htonl(is->is_statsn + 1); 216009ea47eSEdward Tomasz Napierala 217009ea47eSEdward Tomasz Napierala return (false); 218009ea47eSEdward Tomasz Napierala } 219009ea47eSEdward Tomasz Napierala 220009ea47eSEdward Tomasz Napierala static void 221009ea47eSEdward Tomasz Napierala iscsi_session_send_postponed(struct iscsi_session *is) 222009ea47eSEdward Tomasz Napierala { 223009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 224009ea47eSEdward Tomasz Napierala bool postpone; 225009ea47eSEdward Tomasz Napierala 226009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 227009ea47eSEdward Tomasz Napierala 22816c158a5SEdward Tomasz Napierala while (!STAILQ_EMPTY(&is->is_postponed)) { 22916c158a5SEdward Tomasz Napierala request = STAILQ_FIRST(&is->is_postponed); 230009ea47eSEdward Tomasz Napierala postpone = iscsi_pdu_prepare(request); 231009ea47eSEdward Tomasz Napierala if (postpone) 232009ea47eSEdward Tomasz Napierala break; 23316c158a5SEdward Tomasz Napierala STAILQ_REMOVE_HEAD(&is->is_postponed, ip_next); 234009ea47eSEdward Tomasz Napierala icl_pdu_queue(request); 235009ea47eSEdward Tomasz Napierala } 236009ea47eSEdward Tomasz Napierala } 237009ea47eSEdward Tomasz Napierala 238009ea47eSEdward Tomasz Napierala static void 239009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(struct icl_pdu *request) 240009ea47eSEdward Tomasz Napierala { 241009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 242009ea47eSEdward Tomasz Napierala bool postpone; 243009ea47eSEdward Tomasz Napierala 244009ea47eSEdward Tomasz Napierala is = PDU_SESSION(request); 245009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 246009ea47eSEdward Tomasz Napierala iscsi_session_send_postponed(is); 247009ea47eSEdward Tomasz Napierala postpone = iscsi_pdu_prepare(request); 248009ea47eSEdward Tomasz Napierala if (postpone) { 24916c158a5SEdward Tomasz Napierala STAILQ_INSERT_TAIL(&is->is_postponed, request, ip_next); 250009ea47eSEdward Tomasz Napierala return; 251009ea47eSEdward Tomasz Napierala } 252009ea47eSEdward Tomasz Napierala icl_pdu_queue(request); 253009ea47eSEdward Tomasz Napierala } 254009ea47eSEdward Tomasz Napierala 255009ea47eSEdward Tomasz Napierala static void 256009ea47eSEdward Tomasz Napierala iscsi_pdu_queue(struct icl_pdu *request) 257009ea47eSEdward Tomasz Napierala { 258009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 259009ea47eSEdward Tomasz Napierala 260009ea47eSEdward Tomasz Napierala is = PDU_SESSION(request); 261009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 262009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(request); 263009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 264009ea47eSEdward Tomasz Napierala } 265009ea47eSEdward Tomasz Napierala 266009ea47eSEdward Tomasz Napierala static void 267009ea47eSEdward Tomasz Napierala iscsi_session_logout(struct iscsi_session *is) 268009ea47eSEdward Tomasz Napierala { 269009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 270009ea47eSEdward Tomasz Napierala struct iscsi_bhs_logout_request *bhslr; 271009ea47eSEdward Tomasz Napierala 272d2d52b00SEdward Tomasz Napierala request = icl_pdu_new(is->is_conn, M_NOWAIT); 273009ea47eSEdward Tomasz Napierala if (request == NULL) 274009ea47eSEdward Tomasz Napierala return; 275009ea47eSEdward Tomasz Napierala 276009ea47eSEdward Tomasz Napierala bhslr = (struct iscsi_bhs_logout_request *)request->ip_bhs; 277009ea47eSEdward Tomasz Napierala bhslr->bhslr_opcode = ISCSI_BHS_OPCODE_LOGOUT_REQUEST; 278009ea47eSEdward Tomasz Napierala bhslr->bhslr_reason = BHSLR_REASON_CLOSE_SESSION; 279009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(request); 280009ea47eSEdward Tomasz Napierala } 281009ea47eSEdward Tomasz Napierala 282009ea47eSEdward Tomasz Napierala static void 283aa75114cSAlexander Motin iscsi_session_terminate_task(struct iscsi_session *is, 284aa75114cSAlexander Motin struct iscsi_outstanding *io, bool requeue) 285aa75114cSAlexander Motin { 286aa75114cSAlexander Motin 287aa75114cSAlexander Motin if (io->io_ccb != NULL) { 288aa75114cSAlexander Motin io->io_ccb->ccb_h.status &= ~(CAM_SIM_QUEUED | CAM_STATUS_MASK); 289aa75114cSAlexander Motin if (requeue) 290aa75114cSAlexander Motin io->io_ccb->ccb_h.status |= CAM_REQUEUE_REQ; 291aa75114cSAlexander Motin else 292aa75114cSAlexander Motin io->io_ccb->ccb_h.status |= CAM_REQ_ABORTED; 293aa75114cSAlexander Motin if ((io->io_ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 294aa75114cSAlexander Motin io->io_ccb->ccb_h.status |= CAM_DEV_QFRZN; 295aa75114cSAlexander Motin xpt_freeze_devq(io->io_ccb->ccb_h.path, 1); 296aa75114cSAlexander Motin ISCSI_SESSION_DEBUG(is, "freezing devq"); 297aa75114cSAlexander Motin } 298aa75114cSAlexander Motin xpt_done(io->io_ccb); 299aa75114cSAlexander Motin } 300aa75114cSAlexander Motin iscsi_outstanding_remove(is, io); 301aa75114cSAlexander Motin } 302aa75114cSAlexander Motin 303aa75114cSAlexander Motin static void 304009ea47eSEdward Tomasz Napierala iscsi_session_terminate_tasks(struct iscsi_session *is, bool requeue) 305009ea47eSEdward Tomasz Napierala { 306009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io, *tmp; 307009ea47eSEdward Tomasz Napierala 308009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 309009ea47eSEdward Tomasz Napierala 310009ea47eSEdward Tomasz Napierala TAILQ_FOREACH_SAFE(io, &is->is_outstanding, io_next, tmp) { 311aa75114cSAlexander Motin iscsi_session_terminate_task(is, io, requeue); 312009ea47eSEdward Tomasz Napierala } 313009ea47eSEdward Tomasz Napierala } 314009ea47eSEdward Tomasz Napierala 315009ea47eSEdward Tomasz Napierala static void 316f1f12e40SEdward Tomasz Napierala iscsi_session_cleanup(struct iscsi_session *is, bool destroy_sim) 317009ea47eSEdward Tomasz Napierala { 318009ea47eSEdward Tomasz Napierala struct icl_pdu *pdu; 319009ea47eSEdward Tomasz Napierala 320f1f12e40SEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 321009ea47eSEdward Tomasz Napierala 322009ea47eSEdward Tomasz Napierala /* 323009ea47eSEdward Tomasz Napierala * Don't queue any new PDUs. 324009ea47eSEdward Tomasz Napierala */ 325009ea47eSEdward Tomasz Napierala if (is->is_sim != NULL && is->is_simq_frozen == false) { 326009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing"); 327009ea47eSEdward Tomasz Napierala xpt_freeze_simq(is->is_sim, 1); 328009ea47eSEdward Tomasz Napierala is->is_simq_frozen = true; 329009ea47eSEdward Tomasz Napierala } 330009ea47eSEdward Tomasz Napierala 331009ea47eSEdward Tomasz Napierala /* 332009ea47eSEdward Tomasz Napierala * Remove postponed PDUs. 333009ea47eSEdward Tomasz Napierala */ 33416c158a5SEdward Tomasz Napierala while (!STAILQ_EMPTY(&is->is_postponed)) { 33516c158a5SEdward Tomasz Napierala pdu = STAILQ_FIRST(&is->is_postponed); 33616c158a5SEdward Tomasz Napierala STAILQ_REMOVE_HEAD(&is->is_postponed, ip_next); 337009ea47eSEdward Tomasz Napierala icl_pdu_free(pdu); 338009ea47eSEdward Tomasz Napierala } 339009ea47eSEdward Tomasz Napierala 340f1f12e40SEdward Tomasz Napierala if (destroy_sim == false) { 341009ea47eSEdward Tomasz Napierala /* 342009ea47eSEdward Tomasz Napierala * Terminate SCSI tasks, asking CAM to requeue them. 343009ea47eSEdward Tomasz Napierala */ 344009ea47eSEdward Tomasz Napierala iscsi_session_terminate_tasks(is, true); 345f1f12e40SEdward Tomasz Napierala return; 346f1f12e40SEdward Tomasz Napierala } 347f1f12e40SEdward Tomasz Napierala 348f1f12e40SEdward Tomasz Napierala iscsi_session_terminate_tasks(is, false); 349f1f12e40SEdward Tomasz Napierala 350f1f12e40SEdward Tomasz Napierala if (is->is_sim == NULL) 351f1f12e40SEdward Tomasz Napierala return; 352f1f12e40SEdward Tomasz Napierala 353f1f12e40SEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "deregistering SIM"); 354f1f12e40SEdward Tomasz Napierala xpt_async(AC_LOST_DEVICE, is->is_path, NULL); 355f1f12e40SEdward Tomasz Napierala 356f1f12e40SEdward Tomasz Napierala if (is->is_simq_frozen) { 357f1f12e40SEdward Tomasz Napierala xpt_release_simq(is->is_sim, 1); 358f1f12e40SEdward Tomasz Napierala is->is_simq_frozen = false; 359f1f12e40SEdward Tomasz Napierala } 360f1f12e40SEdward Tomasz Napierala 361f1f12e40SEdward Tomasz Napierala xpt_free_path(is->is_path); 362f1f12e40SEdward Tomasz Napierala is->is_path = NULL; 363f1f12e40SEdward Tomasz Napierala xpt_bus_deregister(cam_sim_path(is->is_sim)); 364f1f12e40SEdward Tomasz Napierala cam_sim_free(is->is_sim, TRUE /*free_devq*/); 365f1f12e40SEdward Tomasz Napierala is->is_sim = NULL; 366f1f12e40SEdward Tomasz Napierala is->is_devq = NULL; 367f1f12e40SEdward Tomasz Napierala } 368f1f12e40SEdward Tomasz Napierala 369f1f12e40SEdward Tomasz Napierala static void 370f1f12e40SEdward Tomasz Napierala iscsi_maintenance_thread_reconnect(struct iscsi_session *is) 371f1f12e40SEdward Tomasz Napierala { 372f1f12e40SEdward Tomasz Napierala 373f1f12e40SEdward Tomasz Napierala icl_conn_close(is->is_conn); 374f1f12e40SEdward Tomasz Napierala 375f1f12e40SEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 376f1f12e40SEdward Tomasz Napierala 377f1f12e40SEdward Tomasz Napierala is->is_connected = false; 378f1f12e40SEdward Tomasz Napierala is->is_reconnecting = false; 379f1f12e40SEdward Tomasz Napierala is->is_login_phase = false; 380f1f12e40SEdward Tomasz Napierala 381f1f12e40SEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 382f1f12e40SEdward Tomasz Napierala if (is->is_login_pdu != NULL) { 383f1f12e40SEdward Tomasz Napierala icl_pdu_free(is->is_login_pdu); 384f1f12e40SEdward Tomasz Napierala is->is_login_pdu = NULL; 385f1f12e40SEdward Tomasz Napierala } 386f1f12e40SEdward Tomasz Napierala cv_signal(&is->is_login_cv); 387f1f12e40SEdward Tomasz Napierala #endif 388f1f12e40SEdward Tomasz Napierala 389f1f12e40SEdward Tomasz Napierala if (fail_on_disconnection) { 390f1f12e40SEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "connection failed, destroying devices"); 391f1f12e40SEdward Tomasz Napierala iscsi_session_cleanup(is, true); 392f1f12e40SEdward Tomasz Napierala } else { 393f1f12e40SEdward Tomasz Napierala iscsi_session_cleanup(is, false); 394f1f12e40SEdward Tomasz Napierala } 395009ea47eSEdward Tomasz Napierala 396009ea47eSEdward Tomasz Napierala KASSERT(TAILQ_EMPTY(&is->is_outstanding), 397009ea47eSEdward Tomasz Napierala ("destroying session with active tasks")); 39816c158a5SEdward Tomasz Napierala KASSERT(STAILQ_EMPTY(&is->is_postponed), 399009ea47eSEdward Tomasz Napierala ("destroying session with postponed PDUs")); 400009ea47eSEdward Tomasz Napierala 401009ea47eSEdward Tomasz Napierala /* 402009ea47eSEdward Tomasz Napierala * Request immediate reconnection from iscsid(8). 403009ea47eSEdward Tomasz Napierala */ 404009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "waking up iscsid(8)"); 405009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = true; 406009ea47eSEdward Tomasz Napierala strlcpy(is->is_reason, "Waiting for iscsid(8)", sizeof(is->is_reason)); 407009ea47eSEdward Tomasz Napierala is->is_timeout = 0; 408009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 409009ea47eSEdward Tomasz Napierala cv_signal(&is->is_softc->sc_cv); 410009ea47eSEdward Tomasz Napierala } 411009ea47eSEdward Tomasz Napierala 412009ea47eSEdward Tomasz Napierala static void 413009ea47eSEdward Tomasz Napierala iscsi_maintenance_thread_terminate(struct iscsi_session *is) 414009ea47eSEdward Tomasz Napierala { 415009ea47eSEdward Tomasz Napierala struct iscsi_softc *sc; 416009ea47eSEdward Tomasz Napierala 417009ea47eSEdward Tomasz Napierala sc = is->is_softc; 418009ea47eSEdward Tomasz Napierala sx_xlock(&sc->sc_lock); 419009ea47eSEdward Tomasz Napierala TAILQ_REMOVE(&sc->sc_sessions, is, is_next); 420009ea47eSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 421009ea47eSEdward Tomasz Napierala 422009ea47eSEdward Tomasz Napierala icl_conn_close(is->is_conn); 423009ea47eSEdward Tomasz Napierala 424009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 425009ea47eSEdward Tomasz Napierala 426009ea47eSEdward Tomasz Napierala KASSERT(is->is_terminating, ("is_terminating == false")); 427009ea47eSEdward Tomasz Napierala 428009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 429009ea47eSEdward Tomasz Napierala if (is->is_login_pdu != NULL) { 430009ea47eSEdward Tomasz Napierala icl_pdu_free(is->is_login_pdu); 431009ea47eSEdward Tomasz Napierala is->is_login_pdu = NULL; 432009ea47eSEdward Tomasz Napierala } 433009ea47eSEdward Tomasz Napierala cv_signal(&is->is_login_cv); 434009ea47eSEdward Tomasz Napierala #endif 435009ea47eSEdward Tomasz Napierala 436009ea47eSEdward Tomasz Napierala callout_drain(&is->is_callout); 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 { 513009ea47eSEdward Tomasz Napierala if (is->is_terminating) 514009ea47eSEdward Tomasz Napierala return; 515009ea47eSEdward Tomasz Napierala 516009ea47eSEdward Tomasz Napierala is->is_terminating = true; 517009ea47eSEdward Tomasz Napierala 518009ea47eSEdward Tomasz Napierala #if 0 519009ea47eSEdward Tomasz Napierala iscsi_session_logout(is); 520009ea47eSEdward Tomasz Napierala #endif 521009ea47eSEdward Tomasz Napierala cv_signal(&is->is_maintenance_cv); 522009ea47eSEdward Tomasz Napierala } 523009ea47eSEdward Tomasz Napierala 524009ea47eSEdward Tomasz Napierala static void 525009ea47eSEdward Tomasz Napierala iscsi_callout(void *context) 526009ea47eSEdward Tomasz Napierala { 527009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 528009ea47eSEdward Tomasz Napierala struct iscsi_bhs_nop_out *bhsno; 529009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 530009ea47eSEdward Tomasz Napierala bool reconnect_needed = false; 531009ea47eSEdward Tomasz Napierala 532009ea47eSEdward Tomasz Napierala is = context; 533009ea47eSEdward Tomasz Napierala 534009ea47eSEdward Tomasz Napierala if (is->is_terminating) 535009ea47eSEdward Tomasz Napierala return; 536009ea47eSEdward Tomasz Napierala 537009ea47eSEdward Tomasz Napierala callout_schedule(&is->is_callout, 1 * hz); 538009ea47eSEdward Tomasz Napierala 539009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 540009ea47eSEdward Tomasz Napierala is->is_timeout++; 541009ea47eSEdward Tomasz Napierala 542009ea47eSEdward Tomasz Napierala if (is->is_waiting_for_iscsid) { 5432c5b89e5SEdward Tomasz Napierala if (iscsid_timeout > 0 && is->is_timeout > iscsid_timeout) { 544009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "timed out waiting for iscsid(8) " 545009ea47eSEdward Tomasz Napierala "for %d seconds; reconnecting", 546009ea47eSEdward Tomasz Napierala is->is_timeout); 547009ea47eSEdward Tomasz Napierala reconnect_needed = true; 548009ea47eSEdward Tomasz Napierala } 549009ea47eSEdward Tomasz Napierala goto out; 550009ea47eSEdward Tomasz Napierala } 551009ea47eSEdward Tomasz Napierala 552009ea47eSEdward Tomasz Napierala if (is->is_login_phase) { 5532c5b89e5SEdward Tomasz Napierala if (login_timeout > 0 && is->is_timeout > login_timeout) { 554009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "login timed out after %d seconds; " 555009ea47eSEdward Tomasz Napierala "reconnecting", is->is_timeout); 556009ea47eSEdward Tomasz Napierala reconnect_needed = true; 557009ea47eSEdward Tomasz Napierala } 558009ea47eSEdward Tomasz Napierala goto out; 559009ea47eSEdward Tomasz Napierala } 560009ea47eSEdward Tomasz Napierala 5612c5b89e5SEdward Tomasz Napierala if (ping_timeout <= 0) { 5622c5b89e5SEdward Tomasz Napierala /* 5632c5b89e5SEdward Tomasz Napierala * Pings are disabled. Don't send NOP-Out in this case. 5642c5b89e5SEdward Tomasz Napierala * Reset the timeout, to avoid triggering reconnection, 5652c5b89e5SEdward Tomasz Napierala * should the user decide to reenable them. 5662c5b89e5SEdward Tomasz Napierala */ 5672c5b89e5SEdward Tomasz Napierala is->is_timeout = 0; 5682c5b89e5SEdward Tomasz Napierala goto out; 5692c5b89e5SEdward Tomasz Napierala } 5702c5b89e5SEdward Tomasz Napierala 571009ea47eSEdward Tomasz Napierala if (is->is_timeout >= ping_timeout) { 572009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "no ping reply (NOP-In) after %d seconds; " 573009ea47eSEdward Tomasz Napierala "reconnecting", ping_timeout); 574009ea47eSEdward Tomasz Napierala reconnect_needed = true; 575009ea47eSEdward Tomasz Napierala goto out; 576009ea47eSEdward Tomasz Napierala } 577009ea47eSEdward Tomasz Napierala 578009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 579009ea47eSEdward Tomasz Napierala 580009ea47eSEdward Tomasz Napierala /* 581009ea47eSEdward Tomasz Napierala * If the ping was reset less than one second ago - which means 582009ea47eSEdward Tomasz Napierala * that we've received some PDU during the last second - assume 583009ea47eSEdward Tomasz Napierala * the traffic flows correctly and don't bother sending a NOP-Out. 584009ea47eSEdward Tomasz Napierala * 585009ea47eSEdward Tomasz Napierala * (It's 2 - one for one second, and one for incrementing is_timeout 586009ea47eSEdward Tomasz Napierala * earlier in this routine.) 587009ea47eSEdward Tomasz Napierala */ 588009ea47eSEdward Tomasz Napierala if (is->is_timeout < 2) 589009ea47eSEdward Tomasz Napierala return; 590009ea47eSEdward Tomasz Napierala 591d2d52b00SEdward Tomasz Napierala request = icl_pdu_new(is->is_conn, M_NOWAIT); 59246aaea89SEdward Tomasz Napierala if (request == NULL) { 59346aaea89SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate PDU"); 59446aaea89SEdward Tomasz Napierala return; 59546aaea89SEdward Tomasz Napierala } 596009ea47eSEdward Tomasz Napierala bhsno = (struct iscsi_bhs_nop_out *)request->ip_bhs; 597009ea47eSEdward Tomasz Napierala bhsno->bhsno_opcode = ISCSI_BHS_OPCODE_NOP_OUT | 598009ea47eSEdward Tomasz Napierala ISCSI_BHS_OPCODE_IMMEDIATE; 599009ea47eSEdward Tomasz Napierala bhsno->bhsno_flags = 0x80; 600009ea47eSEdward Tomasz Napierala bhsno->bhsno_target_transfer_tag = 0xffffffff; 601009ea47eSEdward Tomasz Napierala iscsi_pdu_queue(request); 602009ea47eSEdward Tomasz Napierala return; 603009ea47eSEdward Tomasz Napierala 604009ea47eSEdward Tomasz Napierala out: 605009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 606009ea47eSEdward Tomasz Napierala 607009ea47eSEdward Tomasz Napierala if (reconnect_needed) 608009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 609009ea47eSEdward Tomasz Napierala } 610009ea47eSEdward Tomasz Napierala 611009ea47eSEdward Tomasz Napierala static void 612009ea47eSEdward Tomasz Napierala iscsi_pdu_update_statsn(const struct icl_pdu *response) 613009ea47eSEdward Tomasz Napierala { 614009ea47eSEdward Tomasz Napierala const struct iscsi_bhs_data_in *bhsdi; 615009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 616*2124e3b0SAlexander Motin uint32_t expcmdsn, maxcmdsn, statsn; 617009ea47eSEdward Tomasz Napierala 618009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 619009ea47eSEdward Tomasz Napierala 620009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 621009ea47eSEdward Tomasz Napierala 622009ea47eSEdward Tomasz Napierala /* 623009ea47eSEdward Tomasz Napierala * We're only using fields common for all the response 624009ea47eSEdward Tomasz Napierala * (target -> initiator) PDUs. 625009ea47eSEdward Tomasz Napierala */ 626009ea47eSEdward Tomasz Napierala bhsdi = (const struct iscsi_bhs_data_in *)response->ip_bhs; 627009ea47eSEdward Tomasz Napierala /* 628009ea47eSEdward Tomasz Napierala * Ok, I lied. In case of Data-In, "The fields StatSN, Status, 629009ea47eSEdward Tomasz Napierala * and Residual Count only have meaningful content if the S bit 630009ea47eSEdward Tomasz Napierala * is set to 1", so we also need to check the bit specific for 631009ea47eSEdward Tomasz Napierala * Data-In PDU. 632009ea47eSEdward Tomasz Napierala */ 633009ea47eSEdward Tomasz Napierala if (bhsdi->bhsdi_opcode != ISCSI_BHS_OPCODE_SCSI_DATA_IN || 634009ea47eSEdward Tomasz Napierala (bhsdi->bhsdi_flags & BHSDI_FLAGS_S) != 0) { 635*2124e3b0SAlexander Motin statsn = ntohl(bhsdi->bhsdi_statsn); 636*2124e3b0SAlexander Motin if (statsn != is->is_statsn && statsn != (is->is_statsn + 1)) { 637*2124e3b0SAlexander Motin /* XXX: This is normal situation for MCS */ 638*2124e3b0SAlexander Motin ISCSI_SESSION_WARN(is, "PDU 0x%x StatSN %u != " 639*2124e3b0SAlexander Motin "session ExpStatSN %u (or + 1); reconnecting", 640*2124e3b0SAlexander Motin bhsdi->bhsdi_opcode, statsn, is->is_statsn); 641*2124e3b0SAlexander Motin iscsi_session_reconnect(is); 642009ea47eSEdward Tomasz Napierala } 643*2124e3b0SAlexander Motin if (ISCSI_SNGT(statsn, is->is_statsn)) 644*2124e3b0SAlexander Motin is->is_statsn = statsn; 645009ea47eSEdward Tomasz Napierala } 646009ea47eSEdward Tomasz Napierala 647009ea47eSEdward Tomasz Napierala expcmdsn = ntohl(bhsdi->bhsdi_expcmdsn); 648009ea47eSEdward Tomasz Napierala maxcmdsn = ntohl(bhsdi->bhsdi_maxcmdsn); 649009ea47eSEdward Tomasz Napierala 650*2124e3b0SAlexander Motin if (ISCSI_SNLT(maxcmdsn + 1, expcmdsn)) { 651*2124e3b0SAlexander Motin ISCSI_SESSION_DEBUG(is, 652*2124e3b0SAlexander Motin "PDU MaxCmdSN %u + 1 < PDU ExpCmdSN %u; ignoring", 653009ea47eSEdward Tomasz Napierala maxcmdsn, expcmdsn); 654009ea47eSEdward Tomasz Napierala } else { 655*2124e3b0SAlexander Motin if (ISCSI_SNGT(maxcmdsn, is->is_maxcmdsn)) { 656009ea47eSEdward Tomasz Napierala is->is_maxcmdsn = maxcmdsn; 657009ea47eSEdward Tomasz Napierala 658009ea47eSEdward Tomasz Napierala /* 659009ea47eSEdward Tomasz Napierala * Command window increased; kick the maintanance thread 660009ea47eSEdward Tomasz Napierala * to send out postponed commands. 661009ea47eSEdward Tomasz Napierala */ 66216c158a5SEdward Tomasz Napierala if (!STAILQ_EMPTY(&is->is_postponed)) 663009ea47eSEdward Tomasz Napierala cv_signal(&is->is_maintenance_cv); 664*2124e3b0SAlexander Motin } else if (ISCSI_SNLT(maxcmdsn, is->is_maxcmdsn)) { 665*2124e3b0SAlexander Motin /* XXX: This is normal situation for MCS */ 666*2124e3b0SAlexander Motin ISCSI_SESSION_DEBUG(is, 667*2124e3b0SAlexander Motin "PDU MaxCmdSN %u < session MaxCmdSN %u; ignoring", 668009ea47eSEdward Tomasz Napierala maxcmdsn, is->is_maxcmdsn); 669009ea47eSEdward Tomasz Napierala } 670009ea47eSEdward Tomasz Napierala 671*2124e3b0SAlexander Motin if (ISCSI_SNGT(expcmdsn, is->is_expcmdsn)) { 672009ea47eSEdward Tomasz Napierala is->is_expcmdsn = expcmdsn; 673*2124e3b0SAlexander Motin } else if (ISCSI_SNLT(expcmdsn, is->is_expcmdsn)) { 674*2124e3b0SAlexander Motin /* XXX: This is normal situation for MCS */ 675*2124e3b0SAlexander Motin ISCSI_SESSION_DEBUG(is, 676*2124e3b0SAlexander Motin "PDU ExpCmdSN %u < session ExpCmdSN %u; ignoring", 677009ea47eSEdward Tomasz Napierala expcmdsn, is->is_expcmdsn); 678009ea47eSEdward Tomasz Napierala } 679009ea47eSEdward Tomasz Napierala } 680009ea47eSEdward Tomasz Napierala 681009ea47eSEdward Tomasz Napierala /* 682009ea47eSEdward Tomasz Napierala * Every incoming PDU - not just NOP-In - resets the ping timer. 683009ea47eSEdward Tomasz Napierala * The purpose of the timeout is to reset the connection when it stalls; 684009ea47eSEdward Tomasz Napierala * we don't want this to happen when NOP-In or NOP-Out ends up delayed 685009ea47eSEdward Tomasz Napierala * in some queue. 686009ea47eSEdward Tomasz Napierala */ 687009ea47eSEdward Tomasz Napierala is->is_timeout = 0; 688009ea47eSEdward Tomasz Napierala } 689009ea47eSEdward Tomasz Napierala 690009ea47eSEdward Tomasz Napierala static void 691009ea47eSEdward Tomasz Napierala iscsi_receive_callback(struct icl_pdu *response) 692009ea47eSEdward Tomasz Napierala { 693009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 694009ea47eSEdward Tomasz Napierala 695009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 696009ea47eSEdward Tomasz Napierala 697009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 698009ea47eSEdward Tomasz Napierala 699009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 700009ea47eSEdward Tomasz Napierala if (is->is_login_phase) { 701009ea47eSEdward Tomasz Napierala if (is->is_login_pdu == NULL) 702009ea47eSEdward Tomasz Napierala is->is_login_pdu = response; 703009ea47eSEdward Tomasz Napierala else 704009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 705009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 706009ea47eSEdward Tomasz Napierala cv_signal(&is->is_login_cv); 707009ea47eSEdward Tomasz Napierala return; 708009ea47eSEdward Tomasz Napierala } 709009ea47eSEdward Tomasz Napierala #endif 710009ea47eSEdward Tomasz Napierala 711009ea47eSEdward Tomasz Napierala iscsi_pdu_update_statsn(response); 712009ea47eSEdward Tomasz Napierala 713009ea47eSEdward Tomasz Napierala /* 714009ea47eSEdward Tomasz Napierala * The handling routine is responsible for freeing the PDU 715009ea47eSEdward Tomasz Napierala * when it's no longer needed. 716009ea47eSEdward Tomasz Napierala */ 717009ea47eSEdward Tomasz Napierala switch (response->ip_bhs->bhs_opcode) { 718009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_NOP_IN: 719009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_nop_in(response); 720c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 721009ea47eSEdward Tomasz Napierala break; 722009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_SCSI_RESPONSE: 723009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_scsi_response(response); 724c215ad3aSAlexander Motin /* Session lock dropped inside. */ 725c215ad3aSAlexander Motin ISCSI_SESSION_LOCK_ASSERT_NOT(is); 726009ea47eSEdward Tomasz Napierala break; 727aa75114cSAlexander Motin case ISCSI_BHS_OPCODE_TASK_RESPONSE: 728aa75114cSAlexander Motin iscsi_pdu_handle_task_response(response); 729c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 730aa75114cSAlexander Motin break; 731009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_SCSI_DATA_IN: 732009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_data_in(response); 733c215ad3aSAlexander Motin /* Session lock dropped inside. */ 734c215ad3aSAlexander Motin ISCSI_SESSION_LOCK_ASSERT_NOT(is); 735009ea47eSEdward Tomasz Napierala break; 736009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_LOGOUT_RESPONSE: 737009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_logout_response(response); 738c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 739009ea47eSEdward Tomasz Napierala break; 740009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_R2T: 741009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_r2t(response); 742c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 743009ea47eSEdward Tomasz Napierala break; 744009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_ASYNC_MESSAGE: 745009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_async_message(response); 746c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 747009ea47eSEdward Tomasz Napierala break; 748009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_REJECT: 749009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_reject(response); 750c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 751009ea47eSEdward Tomasz Napierala break; 752009ea47eSEdward Tomasz Napierala default: 753009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "received PDU with unsupported " 754009ea47eSEdward Tomasz Napierala "opcode 0x%x; reconnecting", 755009ea47eSEdward Tomasz Napierala response->ip_bhs->bhs_opcode); 756009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 757c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 758009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 759009ea47eSEdward Tomasz Napierala } 760009ea47eSEdward Tomasz Napierala } 761009ea47eSEdward Tomasz Napierala 762009ea47eSEdward Tomasz Napierala static void 763009ea47eSEdward Tomasz Napierala iscsi_error_callback(struct icl_conn *ic) 764009ea47eSEdward Tomasz Napierala { 765009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 766009ea47eSEdward Tomasz Napierala 767009ea47eSEdward Tomasz Napierala is = CONN_SESSION(ic); 768009ea47eSEdward Tomasz Napierala 769009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "connection error; reconnecting"); 770009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 771009ea47eSEdward Tomasz Napierala } 772009ea47eSEdward Tomasz Napierala 773009ea47eSEdward Tomasz Napierala static void 774009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_nop_in(struct icl_pdu *response) 775009ea47eSEdward Tomasz Napierala { 7761008ac5eSEdward Tomasz Napierala struct iscsi_session *is; 777009ea47eSEdward Tomasz Napierala struct iscsi_bhs_nop_out *bhsno; 778009ea47eSEdward Tomasz Napierala struct iscsi_bhs_nop_in *bhsni; 779009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 7801008ac5eSEdward Tomasz Napierala void *data = NULL; 7811008ac5eSEdward Tomasz Napierala size_t datasize; 7821008ac5eSEdward Tomasz Napierala int error; 783009ea47eSEdward Tomasz Napierala 7841008ac5eSEdward Tomasz Napierala is = PDU_SESSION(response); 785009ea47eSEdward Tomasz Napierala bhsni = (struct iscsi_bhs_nop_in *)response->ip_bhs; 786009ea47eSEdward Tomasz Napierala 787009ea47eSEdward Tomasz Napierala if (bhsni->bhsni_target_transfer_tag == 0xffffffff) { 788009ea47eSEdward Tomasz Napierala /* 789009ea47eSEdward Tomasz Napierala * Nothing to do; iscsi_pdu_update_statsn() already 790009ea47eSEdward Tomasz Napierala * zeroed the timeout. 791009ea47eSEdward Tomasz Napierala */ 792009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 793009ea47eSEdward Tomasz Napierala return; 794009ea47eSEdward Tomasz Napierala } 795009ea47eSEdward Tomasz Napierala 7961008ac5eSEdward Tomasz Napierala datasize = icl_pdu_data_segment_length(response); 7971008ac5eSEdward Tomasz Napierala if (datasize > 0) { 7981008ac5eSEdward Tomasz Napierala data = malloc(datasize, M_ISCSI, M_NOWAIT | M_ZERO); 7991008ac5eSEdward Tomasz Napierala if (data == NULL) { 8001008ac5eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate memory; " 8011008ac5eSEdward Tomasz Napierala "reconnecting"); 8021008ac5eSEdward Tomasz Napierala icl_pdu_free(response); 8031008ac5eSEdward Tomasz Napierala iscsi_session_reconnect(is); 8041008ac5eSEdward Tomasz Napierala return; 8051008ac5eSEdward Tomasz Napierala } 8061008ac5eSEdward Tomasz Napierala icl_pdu_get_data(response, 0, data, datasize); 8071008ac5eSEdward Tomasz Napierala } 8081008ac5eSEdward Tomasz Napierala 809d2d52b00SEdward Tomasz Napierala request = icl_pdu_new(response->ip_conn, M_NOWAIT); 810009ea47eSEdward Tomasz Napierala if (request == NULL) { 8111008ac5eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate memory; " 8121008ac5eSEdward Tomasz Napierala "reconnecting"); 8131008ac5eSEdward Tomasz Napierala free(data, M_ISCSI); 814009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 8151008ac5eSEdward Tomasz Napierala iscsi_session_reconnect(is); 816009ea47eSEdward Tomasz Napierala return; 817009ea47eSEdward Tomasz Napierala } 818009ea47eSEdward Tomasz Napierala bhsno = (struct iscsi_bhs_nop_out *)request->ip_bhs; 819009ea47eSEdward Tomasz Napierala bhsno->bhsno_opcode = ISCSI_BHS_OPCODE_NOP_OUT | 820009ea47eSEdward Tomasz Napierala ISCSI_BHS_OPCODE_IMMEDIATE; 821009ea47eSEdward Tomasz Napierala bhsno->bhsno_flags = 0x80; 8221008ac5eSEdward Tomasz Napierala bhsno->bhsno_initiator_task_tag = 0xffffffff; 823009ea47eSEdward Tomasz Napierala bhsno->bhsno_target_transfer_tag = bhsni->bhsni_target_transfer_tag; 8241008ac5eSEdward Tomasz Napierala if (datasize > 0) { 8251008ac5eSEdward Tomasz Napierala error = icl_pdu_append_data(request, data, datasize, M_NOWAIT); 8261008ac5eSEdward Tomasz Napierala if (error != 0) { 8271008ac5eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate memory; " 8281008ac5eSEdward Tomasz Napierala "reconnecting"); 8291008ac5eSEdward Tomasz Napierala free(data, M_ISCSI); 8301008ac5eSEdward Tomasz Napierala icl_pdu_free(request); 8311008ac5eSEdward Tomasz Napierala icl_pdu_free(response); 8321008ac5eSEdward Tomasz Napierala iscsi_session_reconnect(is); 8331008ac5eSEdward Tomasz Napierala return; 8341008ac5eSEdward Tomasz Napierala } 8351008ac5eSEdward Tomasz Napierala free(data, M_ISCSI); 8361008ac5eSEdward Tomasz Napierala } 837009ea47eSEdward Tomasz Napierala 838009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 839009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(request); 840009ea47eSEdward Tomasz Napierala } 841009ea47eSEdward Tomasz Napierala 842009ea47eSEdward Tomasz Napierala static void 843009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_scsi_response(struct icl_pdu *response) 844009ea47eSEdward Tomasz Napierala { 845009ea47eSEdward Tomasz Napierala struct iscsi_bhs_scsi_response *bhssr; 846009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io; 847009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 84873e2e95dSAlexander Motin union ccb *ccb; 849009ea47eSEdward Tomasz Napierala struct ccb_scsiio *csio; 85073e2e95dSAlexander Motin size_t data_segment_len, received; 851009ea47eSEdward Tomasz Napierala uint16_t sense_len; 852009ea47eSEdward Tomasz Napierala 853009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 854009ea47eSEdward Tomasz Napierala 855009ea47eSEdward Tomasz Napierala bhssr = (struct iscsi_bhs_scsi_response *)response->ip_bhs; 856009ea47eSEdward Tomasz Napierala io = iscsi_outstanding_find(is, bhssr->bhssr_initiator_task_tag); 857aa75114cSAlexander Motin if (io == NULL || io->io_ccb == NULL) { 858009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "bad itt 0x%x", bhssr->bhssr_initiator_task_tag); 859009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 860009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 861c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 862009ea47eSEdward Tomasz Napierala return; 863009ea47eSEdward Tomasz Napierala } 864009ea47eSEdward Tomasz Napierala 86573e2e95dSAlexander Motin ccb = io->io_ccb; 86673e2e95dSAlexander Motin received = io->io_received; 867c215ad3aSAlexander Motin iscsi_outstanding_remove(is, io); 868c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 869c215ad3aSAlexander Motin 870009ea47eSEdward Tomasz Napierala if (bhssr->bhssr_response != BHSSR_RESPONSE_COMMAND_COMPLETED) { 871009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "service response 0x%x", bhssr->bhssr_response); 87273e2e95dSAlexander Motin if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 87373e2e95dSAlexander Motin xpt_freeze_devq(ccb->ccb_h.path, 1); 874009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 875009ea47eSEdward Tomasz Napierala } 87673e2e95dSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP_ERR | CAM_DEV_QFRZN; 877009ea47eSEdward Tomasz Napierala } else if (bhssr->bhssr_status == 0) { 87873e2e95dSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP; 879009ea47eSEdward Tomasz Napierala } else { 88073e2e95dSAlexander Motin if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 88173e2e95dSAlexander Motin xpt_freeze_devq(ccb->ccb_h.path, 1); 882009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 883009ea47eSEdward Tomasz Napierala } 88473e2e95dSAlexander Motin ccb->ccb_h.status = CAM_SCSI_STATUS_ERROR | CAM_DEV_QFRZN; 88573e2e95dSAlexander Motin ccb->csio.scsi_status = bhssr->bhssr_status; 886009ea47eSEdward Tomasz Napierala } 887009ea47eSEdward Tomasz Napierala 88873e2e95dSAlexander Motin csio = &ccb->csio; 889009ea47eSEdward Tomasz Napierala data_segment_len = icl_pdu_data_segment_length(response); 890009ea47eSEdward Tomasz Napierala if (data_segment_len > 0) { 891009ea47eSEdward Tomasz Napierala if (data_segment_len < sizeof(sense_len)) { 892009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "truncated data segment (%zd bytes)", 893009ea47eSEdward Tomasz Napierala data_segment_len); 89473e2e95dSAlexander Motin if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 89573e2e95dSAlexander Motin xpt_freeze_devq(ccb->ccb_h.path, 1); 896009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 897009ea47eSEdward Tomasz Napierala } 89873e2e95dSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP_ERR | CAM_DEV_QFRZN; 899009ea47eSEdward Tomasz Napierala goto out; 900009ea47eSEdward Tomasz Napierala } 901009ea47eSEdward Tomasz Napierala icl_pdu_get_data(response, 0, &sense_len, sizeof(sense_len)); 902009ea47eSEdward Tomasz Napierala sense_len = ntohs(sense_len); 903009ea47eSEdward Tomasz Napierala #if 0 904009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "sense_len %d, data len %zd", 905009ea47eSEdward Tomasz Napierala sense_len, data_segment_len); 906009ea47eSEdward Tomasz Napierala #endif 907009ea47eSEdward Tomasz Napierala if (sizeof(sense_len) + sense_len > data_segment_len) { 908009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "truncated data segment " 909009ea47eSEdward Tomasz Napierala "(%zd bytes, should be %zd)", 910009ea47eSEdward Tomasz Napierala data_segment_len, sizeof(sense_len) + sense_len); 91173e2e95dSAlexander Motin if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 91273e2e95dSAlexander Motin xpt_freeze_devq(ccb->ccb_h.path, 1); 913009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 914009ea47eSEdward Tomasz Napierala } 91573e2e95dSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP_ERR | CAM_DEV_QFRZN; 916009ea47eSEdward Tomasz Napierala goto out; 917009ea47eSEdward Tomasz Napierala } else if (sizeof(sense_len) + sense_len < data_segment_len) 918009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "oversize data segment " 919009ea47eSEdward Tomasz Napierala "(%zd bytes, should be %zd)", 920009ea47eSEdward Tomasz Napierala data_segment_len, sizeof(sense_len) + sense_len); 921009ea47eSEdward Tomasz Napierala if (sense_len > csio->sense_len) { 922009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "truncating sense from %d to %d", 923009ea47eSEdward Tomasz Napierala sense_len, csio->sense_len); 924009ea47eSEdward Tomasz Napierala sense_len = csio->sense_len; 925009ea47eSEdward Tomasz Napierala } 926009ea47eSEdward Tomasz Napierala icl_pdu_get_data(response, sizeof(sense_len), &csio->sense_data, sense_len); 927009ea47eSEdward Tomasz Napierala csio->sense_resid = csio->sense_len - sense_len; 92873e2e95dSAlexander Motin ccb->ccb_h.status |= CAM_AUTOSNS_VALID; 929009ea47eSEdward Tomasz Napierala } 930009ea47eSEdward Tomasz Napierala 931009ea47eSEdward Tomasz Napierala out: 932009ea47eSEdward Tomasz Napierala if (bhssr->bhssr_flags & BHSSR_FLAGS_RESIDUAL_UNDERFLOW) 933009ea47eSEdward Tomasz Napierala csio->resid = ntohl(bhssr->bhssr_residual_count); 934009ea47eSEdward Tomasz Napierala 935009ea47eSEdward Tomasz Napierala if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) { 93673e2e95dSAlexander Motin KASSERT(received <= csio->dxfer_len, 93773e2e95dSAlexander Motin ("received > csio->dxfer_len")); 93873e2e95dSAlexander Motin if (received < csio->dxfer_len) { 93973e2e95dSAlexander Motin if (csio->resid != csio->dxfer_len - received) { 940009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "underflow mismatch: " 941009ea47eSEdward Tomasz Napierala "target indicates %d, we calculated %zd", 94273e2e95dSAlexander Motin csio->resid, csio->dxfer_len - received); 943009ea47eSEdward Tomasz Napierala } 94473e2e95dSAlexander Motin csio->resid = csio->dxfer_len - received; 945009ea47eSEdward Tomasz Napierala } 946009ea47eSEdward Tomasz Napierala } 947009ea47eSEdward Tomasz Napierala 94873e2e95dSAlexander Motin xpt_done(ccb); 949009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 950009ea47eSEdward Tomasz Napierala } 951009ea47eSEdward Tomasz Napierala 952009ea47eSEdward Tomasz Napierala static void 953aa75114cSAlexander Motin iscsi_pdu_handle_task_response(struct icl_pdu *response) 954aa75114cSAlexander Motin { 955aa75114cSAlexander Motin struct iscsi_bhs_task_management_response *bhstmr; 956aa75114cSAlexander Motin struct iscsi_outstanding *io, *aio; 957aa75114cSAlexander Motin struct iscsi_session *is; 958aa75114cSAlexander Motin 959aa75114cSAlexander Motin is = PDU_SESSION(response); 960aa75114cSAlexander Motin 961aa75114cSAlexander Motin bhstmr = (struct iscsi_bhs_task_management_response *)response->ip_bhs; 962aa75114cSAlexander Motin io = iscsi_outstanding_find(is, bhstmr->bhstmr_initiator_task_tag); 963aa75114cSAlexander Motin if (io == NULL || io->io_ccb != NULL) { 964aa75114cSAlexander Motin ISCSI_SESSION_WARN(is, "bad itt 0x%x", 965aa75114cSAlexander Motin bhstmr->bhstmr_initiator_task_tag); 966aa75114cSAlexander Motin icl_pdu_free(response); 967aa75114cSAlexander Motin iscsi_session_reconnect(is); 968aa75114cSAlexander Motin return; 969aa75114cSAlexander Motin } 970aa75114cSAlexander Motin 971aa75114cSAlexander Motin if (bhstmr->bhstmr_response != BHSTMR_RESPONSE_FUNCTION_COMPLETE) { 972aa75114cSAlexander Motin ISCSI_SESSION_WARN(is, "task response 0x%x", 973aa75114cSAlexander Motin bhstmr->bhstmr_response); 974aa75114cSAlexander Motin } else { 975aa75114cSAlexander Motin aio = iscsi_outstanding_find(is, io->io_datasn); 976aa75114cSAlexander Motin if (aio != NULL && aio->io_ccb != NULL) 977aa75114cSAlexander Motin iscsi_session_terminate_task(is, aio, false); 978aa75114cSAlexander Motin } 979aa75114cSAlexander Motin 980aa75114cSAlexander Motin iscsi_outstanding_remove(is, io); 981aa75114cSAlexander Motin icl_pdu_free(response); 982aa75114cSAlexander Motin } 983aa75114cSAlexander Motin 984aa75114cSAlexander Motin static void 985009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_data_in(struct icl_pdu *response) 986009ea47eSEdward Tomasz Napierala { 987009ea47eSEdward Tomasz Napierala struct iscsi_bhs_data_in *bhsdi; 988009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io; 989009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 99073e2e95dSAlexander Motin union ccb *ccb; 991009ea47eSEdward Tomasz Napierala struct ccb_scsiio *csio; 99273e2e95dSAlexander Motin size_t data_segment_len, received, oreceived; 993009ea47eSEdward Tomasz Napierala 994009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 995009ea47eSEdward Tomasz Napierala bhsdi = (struct iscsi_bhs_data_in *)response->ip_bhs; 996009ea47eSEdward Tomasz Napierala io = iscsi_outstanding_find(is, bhsdi->bhsdi_initiator_task_tag); 997aa75114cSAlexander Motin if (io == NULL || io->io_ccb == NULL) { 998009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "bad itt 0x%x", bhsdi->bhsdi_initiator_task_tag); 999009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1000009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1001c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 1002009ea47eSEdward Tomasz Napierala return; 1003009ea47eSEdward Tomasz Napierala } 1004009ea47eSEdward Tomasz Napierala 1005009ea47eSEdward Tomasz Napierala data_segment_len = icl_pdu_data_segment_length(response); 1006009ea47eSEdward Tomasz Napierala if (data_segment_len == 0) { 1007009ea47eSEdward Tomasz Napierala /* 1008009ea47eSEdward Tomasz Napierala * "The sending of 0 length data segments should be avoided, 1009009ea47eSEdward Tomasz Napierala * but initiators and targets MUST be able to properly receive 1010009ea47eSEdward Tomasz Napierala * 0 length data segments." 1011009ea47eSEdward Tomasz Napierala */ 1012c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 1013009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1014009ea47eSEdward Tomasz Napierala return; 1015009ea47eSEdward Tomasz Napierala } 1016009ea47eSEdward Tomasz Napierala 1017009ea47eSEdward Tomasz Napierala /* 1018009ea47eSEdward Tomasz Napierala * We need to track this for security reasons - without it, malicious target 1019009ea47eSEdward Tomasz Napierala * could respond to SCSI READ without sending Data-In PDUs, which would result 1020009ea47eSEdward Tomasz Napierala * in read operation on the initiator side returning random kernel data. 1021009ea47eSEdward Tomasz Napierala */ 1022009ea47eSEdward Tomasz Napierala if (ntohl(bhsdi->bhsdi_buffer_offset) != io->io_received) { 1023009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "data out of order; expected offset %zd, got %zd", 1024009ea47eSEdward Tomasz Napierala io->io_received, (size_t)ntohl(bhsdi->bhsdi_buffer_offset)); 1025009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1026009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1027c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 1028009ea47eSEdward Tomasz Napierala return; 1029009ea47eSEdward Tomasz Napierala } 1030009ea47eSEdward Tomasz Napierala 103173e2e95dSAlexander Motin ccb = io->io_ccb; 103273e2e95dSAlexander Motin csio = &ccb->csio; 1033009ea47eSEdward Tomasz Napierala 1034d43c9ec1SEdward Tomasz Napierala if (io->io_received + data_segment_len > csio->dxfer_len) { 1035009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "oversize data segment (%zd bytes " 1036d43c9ec1SEdward Tomasz Napierala "at offset %zd, buffer is %d)", 1037d43c9ec1SEdward Tomasz Napierala data_segment_len, io->io_received, csio->dxfer_len); 1038009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1039009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1040c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 1041009ea47eSEdward Tomasz Napierala return; 1042009ea47eSEdward Tomasz Napierala } 1043009ea47eSEdward Tomasz Napierala 104473e2e95dSAlexander Motin oreceived = io->io_received; 1045009ea47eSEdward Tomasz Napierala io->io_received += data_segment_len; 104673e2e95dSAlexander Motin received = io->io_received; 1047c215ad3aSAlexander Motin if ((bhsdi->bhsdi_flags & BHSDI_FLAGS_S) != 0) 1048c215ad3aSAlexander Motin iscsi_outstanding_remove(is, io); 1049c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 1050c215ad3aSAlexander Motin 105173e2e95dSAlexander Motin icl_pdu_get_data(response, 0, csio->data_ptr + oreceived, data_segment_len); 1052009ea47eSEdward Tomasz Napierala 1053009ea47eSEdward Tomasz Napierala /* 1054009ea47eSEdward Tomasz Napierala * XXX: Check DataSN. 1055009ea47eSEdward Tomasz Napierala * XXX: Check F. 1056009ea47eSEdward Tomasz Napierala */ 105769647b7bSEdward Tomasz Napierala if ((bhsdi->bhsdi_flags & BHSDI_FLAGS_S) == 0) { 105869647b7bSEdward Tomasz Napierala /* 105969647b7bSEdward Tomasz Napierala * Nothing more to do. 106069647b7bSEdward Tomasz Napierala */ 106169647b7bSEdward Tomasz Napierala icl_pdu_free(response); 106269647b7bSEdward Tomasz Napierala return; 106369647b7bSEdward Tomasz Napierala } 106469647b7bSEdward Tomasz Napierala 1065009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "got S flag; status 0x%x", bhsdi->bhsdi_status); 1066009ea47eSEdward Tomasz Napierala if (bhsdi->bhsdi_status == 0) { 106773e2e95dSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP; 1068009ea47eSEdward Tomasz Napierala } else { 106973e2e95dSAlexander Motin if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 107073e2e95dSAlexander Motin xpt_freeze_devq(ccb->ccb_h.path, 1); 1071009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 1072009ea47eSEdward Tomasz Napierala } 107373e2e95dSAlexander Motin ccb->ccb_h.status = CAM_SCSI_STATUS_ERROR | CAM_DEV_QFRZN; 1074009ea47eSEdward Tomasz Napierala csio->scsi_status = bhsdi->bhsdi_status; 1075009ea47eSEdward Tomasz Napierala } 107669647b7bSEdward Tomasz Napierala 107769647b7bSEdward Tomasz Napierala if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) { 107873e2e95dSAlexander Motin KASSERT(received <= csio->dxfer_len, 107973e2e95dSAlexander Motin ("received > csio->dxfer_len")); 108073e2e95dSAlexander Motin if (received < csio->dxfer_len) { 108169647b7bSEdward Tomasz Napierala csio->resid = ntohl(bhsdi->bhsdi_residual_count); 108273e2e95dSAlexander Motin if (csio->resid != csio->dxfer_len - received) { 108369647b7bSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "underflow mismatch: " 108469647b7bSEdward Tomasz Napierala "target indicates %d, we calculated %zd", 108573e2e95dSAlexander Motin csio->resid, csio->dxfer_len - received); 108669647b7bSEdward Tomasz Napierala } 108773e2e95dSAlexander Motin csio->resid = csio->dxfer_len - received; 108869647b7bSEdward Tomasz Napierala } 1089009ea47eSEdward Tomasz Napierala } 1090009ea47eSEdward Tomasz Napierala 109173e2e95dSAlexander Motin xpt_done(ccb); 1092009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1093009ea47eSEdward Tomasz Napierala } 1094009ea47eSEdward Tomasz Napierala 1095009ea47eSEdward Tomasz Napierala static void 1096009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_logout_response(struct icl_pdu *response) 1097009ea47eSEdward Tomasz Napierala { 1098009ea47eSEdward Tomasz Napierala 1099009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(PDU_SESSION(response), "logout response"); 1100009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1101009ea47eSEdward Tomasz Napierala } 1102009ea47eSEdward Tomasz Napierala 1103009ea47eSEdward Tomasz Napierala static void 1104009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_r2t(struct icl_pdu *response) 1105009ea47eSEdward Tomasz Napierala { 1106009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 1107009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1108009ea47eSEdward Tomasz Napierala struct iscsi_bhs_r2t *bhsr2t; 1109009ea47eSEdward Tomasz Napierala struct iscsi_bhs_data_out *bhsdo; 1110009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io; 1111009ea47eSEdward Tomasz Napierala struct ccb_scsiio *csio; 1112009ea47eSEdward Tomasz Napierala size_t off, len, total_len; 1113009ea47eSEdward Tomasz Napierala int error; 1114009ea47eSEdward Tomasz Napierala 1115009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 1116009ea47eSEdward Tomasz Napierala 1117009ea47eSEdward Tomasz Napierala bhsr2t = (struct iscsi_bhs_r2t *)response->ip_bhs; 1118009ea47eSEdward Tomasz Napierala io = iscsi_outstanding_find(is, bhsr2t->bhsr2t_initiator_task_tag); 1119aa75114cSAlexander Motin if (io == NULL || io->io_ccb == NULL) { 1120009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "bad itt 0x%x; reconnecting", 1121009ea47eSEdward Tomasz Napierala bhsr2t->bhsr2t_initiator_task_tag); 1122009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1123009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1124009ea47eSEdward Tomasz Napierala return; 1125009ea47eSEdward Tomasz Napierala } 1126009ea47eSEdward Tomasz Napierala 1127009ea47eSEdward Tomasz Napierala csio = &io->io_ccb->csio; 1128009ea47eSEdward Tomasz Napierala 1129009ea47eSEdward Tomasz Napierala if ((csio->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_OUT) { 1130009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "received R2T for read command; reconnecting"); 1131009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1132009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1133009ea47eSEdward Tomasz Napierala return; 1134009ea47eSEdward Tomasz Napierala } 1135009ea47eSEdward Tomasz Napierala 1136009ea47eSEdward Tomasz Napierala /* 1137009ea47eSEdward Tomasz Napierala * XXX: Verify R2TSN. 1138009ea47eSEdward Tomasz Napierala */ 1139009ea47eSEdward Tomasz Napierala 1140009ea47eSEdward Tomasz Napierala io->io_datasn = 0; 1141d43c9ec1SEdward Tomasz Napierala 1142009ea47eSEdward Tomasz Napierala off = ntohl(bhsr2t->bhsr2t_buffer_offset); 1143d43c9ec1SEdward Tomasz Napierala if (off > csio->dxfer_len) { 1144d43c9ec1SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target requested invalid offset " 1145d43c9ec1SEdward Tomasz Napierala "%zd, buffer is is %d; reconnecting", off, csio->dxfer_len); 1146d43c9ec1SEdward Tomasz Napierala icl_pdu_free(response); 1147d43c9ec1SEdward Tomasz Napierala iscsi_session_reconnect(is); 1148d43c9ec1SEdward Tomasz Napierala return; 1149d43c9ec1SEdward Tomasz Napierala } 1150d43c9ec1SEdward Tomasz Napierala 1151009ea47eSEdward Tomasz Napierala total_len = ntohl(bhsr2t->bhsr2t_desired_data_transfer_length); 1152d43c9ec1SEdward Tomasz Napierala if (total_len == 0 || total_len > csio->dxfer_len) { 1153d43c9ec1SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target requested invalid length " 1154d43c9ec1SEdward Tomasz Napierala "%zd, buffer is %d; reconnecting", total_len, csio->dxfer_len); 1155d43c9ec1SEdward Tomasz Napierala icl_pdu_free(response); 1156d43c9ec1SEdward Tomasz Napierala iscsi_session_reconnect(is); 1157d43c9ec1SEdward Tomasz Napierala return; 1158d43c9ec1SEdward Tomasz Napierala } 1159009ea47eSEdward Tomasz Napierala 1160009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "r2t; off %zd, len %zd", off, total_len); 1161009ea47eSEdward Tomasz Napierala 1162009ea47eSEdward Tomasz Napierala for (;;) { 1163009ea47eSEdward Tomasz Napierala len = total_len; 1164009ea47eSEdward Tomasz Napierala 1165009ea47eSEdward Tomasz Napierala if (len > is->is_max_data_segment_length) 1166009ea47eSEdward Tomasz Napierala len = is->is_max_data_segment_length; 1167009ea47eSEdward Tomasz Napierala 1168009ea47eSEdward Tomasz Napierala if (off + len > csio->dxfer_len) { 1169d43c9ec1SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target requested invalid " 1170d43c9ec1SEdward Tomasz Napierala "length/offset %zd, buffer is %d; reconnecting", 1171009ea47eSEdward Tomasz Napierala off + len, csio->dxfer_len); 1172009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1173009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1174009ea47eSEdward Tomasz Napierala return; 1175009ea47eSEdward Tomasz Napierala } 1176009ea47eSEdward Tomasz Napierala 1177d2d52b00SEdward Tomasz Napierala request = icl_pdu_new(response->ip_conn, M_NOWAIT); 1178009ea47eSEdward Tomasz Napierala if (request == NULL) { 1179009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1180009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1181009ea47eSEdward Tomasz Napierala return; 1182009ea47eSEdward Tomasz Napierala } 1183009ea47eSEdward Tomasz Napierala 1184009ea47eSEdward Tomasz Napierala bhsdo = (struct iscsi_bhs_data_out *)request->ip_bhs; 1185009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_opcode = ISCSI_BHS_OPCODE_SCSI_DATA_OUT; 1186009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_lun = bhsr2t->bhsr2t_lun; 1187009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_initiator_task_tag = 1188009ea47eSEdward Tomasz Napierala bhsr2t->bhsr2t_initiator_task_tag; 1189009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_target_transfer_tag = 1190009ea47eSEdward Tomasz Napierala bhsr2t->bhsr2t_target_transfer_tag; 1191009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_datasn = htonl(io->io_datasn++); 1192009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_buffer_offset = htonl(off); 1193d43c9ec1SEdward Tomasz Napierala error = icl_pdu_append_data(request, csio->data_ptr + off, len, 1194d43c9ec1SEdward Tomasz Napierala M_NOWAIT); 1195009ea47eSEdward Tomasz Napierala if (error != 0) { 1196d43c9ec1SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate memory; " 1197d43c9ec1SEdward Tomasz Napierala "reconnecting"); 1198009ea47eSEdward Tomasz Napierala icl_pdu_free(request); 1199009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1200009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1201009ea47eSEdward Tomasz Napierala return; 1202009ea47eSEdward Tomasz Napierala } 1203009ea47eSEdward Tomasz Napierala 1204009ea47eSEdward Tomasz Napierala off += len; 1205009ea47eSEdward Tomasz Napierala total_len -= len; 1206009ea47eSEdward Tomasz Napierala 1207009ea47eSEdward Tomasz Napierala if (total_len == 0) { 1208009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_flags |= BHSDO_FLAGS_F; 1209009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "setting F, off %zd", off); 1210009ea47eSEdward Tomasz Napierala } else { 1211009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "not finished, off %zd", off); 1212009ea47eSEdward Tomasz Napierala } 1213009ea47eSEdward Tomasz Napierala 1214009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(request); 1215009ea47eSEdward Tomasz Napierala 1216009ea47eSEdward Tomasz Napierala if (total_len == 0) 1217009ea47eSEdward Tomasz Napierala break; 1218009ea47eSEdward Tomasz Napierala } 1219009ea47eSEdward Tomasz Napierala 1220009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1221009ea47eSEdward Tomasz Napierala } 1222009ea47eSEdward Tomasz Napierala 1223009ea47eSEdward Tomasz Napierala static void 1224009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_async_message(struct icl_pdu *response) 1225009ea47eSEdward Tomasz Napierala { 1226009ea47eSEdward Tomasz Napierala struct iscsi_bhs_asynchronous_message *bhsam; 1227009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1228009ea47eSEdward Tomasz Napierala 1229009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 1230009ea47eSEdward Tomasz Napierala bhsam = (struct iscsi_bhs_asynchronous_message *)response->ip_bhs; 1231009ea47eSEdward Tomasz Napierala switch (bhsam->bhsam_async_event) { 1232009ea47eSEdward Tomasz Napierala case BHSAM_EVENT_TARGET_REQUESTS_LOGOUT: 1233009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target requests logout; removing session"); 1234009ea47eSEdward Tomasz Napierala iscsi_session_logout(is); 1235009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1236009ea47eSEdward Tomasz Napierala break; 1237009ea47eSEdward Tomasz Napierala case BHSAM_EVENT_TARGET_TERMINATES_CONNECTION: 1238009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target indicates it will drop drop the connection"); 1239009ea47eSEdward Tomasz Napierala break; 1240009ea47eSEdward Tomasz Napierala case BHSAM_EVENT_TARGET_TERMINATES_SESSION: 1241009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target indicates it will drop drop the session"); 1242009ea47eSEdward Tomasz Napierala break; 1243009ea47eSEdward Tomasz Napierala default: 1244009ea47eSEdward Tomasz Napierala /* 1245009ea47eSEdward Tomasz Napierala * XXX: Technically, we're obligated to also handle 1246009ea47eSEdward Tomasz Napierala * parameter renegotiation. 1247009ea47eSEdward Tomasz Napierala */ 1248009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "ignoring AsyncEvent %d", bhsam->bhsam_async_event); 1249009ea47eSEdward Tomasz Napierala break; 1250009ea47eSEdward Tomasz Napierala } 1251009ea47eSEdward Tomasz Napierala 1252009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1253009ea47eSEdward Tomasz Napierala } 1254009ea47eSEdward Tomasz Napierala 1255009ea47eSEdward Tomasz Napierala static void 1256009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_reject(struct icl_pdu *response) 1257009ea47eSEdward Tomasz Napierala { 1258009ea47eSEdward Tomasz Napierala struct iscsi_bhs_reject *bhsr; 1259009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1260009ea47eSEdward Tomasz Napierala 1261009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 1262009ea47eSEdward Tomasz Napierala bhsr = (struct iscsi_bhs_reject *)response->ip_bhs; 1263009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "received Reject PDU, reason 0x%x; protocol error?", 1264009ea47eSEdward Tomasz Napierala bhsr->bhsr_reason); 1265009ea47eSEdward Tomasz Napierala 1266009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1267009ea47eSEdward Tomasz Napierala } 1268009ea47eSEdward Tomasz Napierala 1269009ea47eSEdward Tomasz Napierala static int 1270009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_wait(struct iscsi_softc *sc, 1271009ea47eSEdward Tomasz Napierala struct iscsi_daemon_request *request) 1272009ea47eSEdward Tomasz Napierala { 1273009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1274009ea47eSEdward Tomasz Napierala int error; 1275009ea47eSEdward Tomasz Napierala 1276009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1277009ea47eSEdward Tomasz Napierala for (;;) { 1278009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 12792be596adSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1280009ea47eSEdward Tomasz Napierala if (is->is_waiting_for_iscsid) 1281009ea47eSEdward Tomasz Napierala break; 12822be596adSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1283009ea47eSEdward Tomasz Napierala } 1284009ea47eSEdward Tomasz Napierala 1285009ea47eSEdward Tomasz Napierala if (is == NULL) { 1286009ea47eSEdward Tomasz Napierala /* 1287009ea47eSEdward Tomasz Napierala * No session requires attention from iscsid(8); wait. 1288009ea47eSEdward Tomasz Napierala */ 1289009ea47eSEdward Tomasz Napierala error = cv_wait_sig(&sc->sc_cv, &sc->sc_lock); 1290009ea47eSEdward Tomasz Napierala if (error != 0) { 1291009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1292009ea47eSEdward Tomasz Napierala return (error); 1293009ea47eSEdward Tomasz Napierala } 1294009ea47eSEdward Tomasz Napierala continue; 1295009ea47eSEdward Tomasz Napierala } 1296009ea47eSEdward Tomasz Napierala 1297009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = false; 1298009ea47eSEdward Tomasz Napierala is->is_login_phase = true; 1299009ea47eSEdward Tomasz Napierala is->is_reason[0] = '\0'; 1300009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1301009ea47eSEdward Tomasz Napierala 1302009ea47eSEdward Tomasz Napierala request->idr_session_id = is->is_id; 1303ffe82e05SAlexander Motin memcpy(&request->idr_isid, &is->is_isid, 1304ffe82e05SAlexander Motin sizeof(request->idr_isid)); 1305ffe82e05SAlexander Motin request->idr_tsih = 0; /* New or reinstated session. */ 1306009ea47eSEdward Tomasz Napierala memcpy(&request->idr_conf, &is->is_conf, 1307009ea47eSEdward Tomasz Napierala sizeof(request->idr_conf)); 1308009ea47eSEdward Tomasz Napierala 1309009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1310009ea47eSEdward Tomasz Napierala return (0); 1311009ea47eSEdward Tomasz Napierala } 1312009ea47eSEdward Tomasz Napierala } 1313009ea47eSEdward Tomasz Napierala 1314009ea47eSEdward Tomasz Napierala static int 1315009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_handoff(struct iscsi_softc *sc, 1316009ea47eSEdward Tomasz Napierala struct iscsi_daemon_handoff *handoff) 1317009ea47eSEdward Tomasz Napierala { 1318009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1319009ea47eSEdward Tomasz Napierala int error; 1320009ea47eSEdward Tomasz Napierala 1321009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1322009ea47eSEdward Tomasz Napierala 1323009ea47eSEdward Tomasz Napierala /* 1324009ea47eSEdward Tomasz Napierala * Find the session to hand off socket to. 1325009ea47eSEdward Tomasz Napierala */ 1326009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1327009ea47eSEdward Tomasz Napierala if (is->is_id == handoff->idh_session_id) 1328009ea47eSEdward Tomasz Napierala break; 1329009ea47eSEdward Tomasz Napierala } 1330009ea47eSEdward Tomasz Napierala if (is == NULL) { 1331009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1332009ea47eSEdward Tomasz Napierala return (ESRCH); 1333009ea47eSEdward Tomasz Napierala } 1334009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1335009ea47eSEdward Tomasz Napierala if (is->is_conf.isc_discovery || is->is_terminating) { 1336009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1337009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1338009ea47eSEdward Tomasz Napierala return (EINVAL); 1339009ea47eSEdward Tomasz Napierala } 13400260023fSEdward Tomasz Napierala if (is->is_connected) { 13410260023fSEdward Tomasz Napierala /* 13420260023fSEdward Tomasz Napierala * This might have happened because another iscsid(8) 13430260023fSEdward Tomasz Napierala * instance handed off the connection in the meantime. 13440260023fSEdward Tomasz Napierala * Just return. 13450260023fSEdward Tomasz Napierala */ 13460260023fSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "handoff on already connected " 13470260023fSEdward Tomasz Napierala "session"); 13480260023fSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 13490260023fSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 13500260023fSEdward Tomasz Napierala return (EBUSY); 13510260023fSEdward Tomasz Napierala } 1352009ea47eSEdward Tomasz Napierala 1353009ea47eSEdward Tomasz Napierala strlcpy(is->is_target_alias, handoff->idh_target_alias, 1354009ea47eSEdward Tomasz Napierala sizeof(is->is_target_alias)); 1355ffe82e05SAlexander Motin is->is_tsih = handoff->idh_tsih; 1356009ea47eSEdward Tomasz Napierala is->is_statsn = handoff->idh_statsn; 1357009ea47eSEdward Tomasz Napierala is->is_initial_r2t = handoff->idh_initial_r2t; 1358009ea47eSEdward Tomasz Napierala is->is_immediate_data = handoff->idh_immediate_data; 1359009ea47eSEdward Tomasz Napierala is->is_max_data_segment_length = handoff->idh_max_data_segment_length; 1360009ea47eSEdward Tomasz Napierala is->is_max_burst_length = handoff->idh_max_burst_length; 1361009ea47eSEdward Tomasz Napierala is->is_first_burst_length = handoff->idh_first_burst_length; 1362009ea47eSEdward Tomasz Napierala 1363009ea47eSEdward Tomasz Napierala if (handoff->idh_header_digest == ISCSI_DIGEST_CRC32C) 1364009ea47eSEdward Tomasz Napierala is->is_conn->ic_header_crc32c = true; 1365009ea47eSEdward Tomasz Napierala else 1366009ea47eSEdward Tomasz Napierala is->is_conn->ic_header_crc32c = false; 1367009ea47eSEdward Tomasz Napierala if (handoff->idh_data_digest == ISCSI_DIGEST_CRC32C) 1368009ea47eSEdward Tomasz Napierala is->is_conn->ic_data_crc32c = true; 1369009ea47eSEdward Tomasz Napierala else 1370009ea47eSEdward Tomasz Napierala is->is_conn->ic_data_crc32c = false; 1371009ea47eSEdward Tomasz Napierala 1372009ea47eSEdward Tomasz Napierala is->is_cmdsn = 0; 1373cf23c509SEdward Tomasz Napierala is->is_expcmdsn = 0; 1374cf23c509SEdward Tomasz Napierala is->is_maxcmdsn = 0; 1375009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = false; 1376009ea47eSEdward Tomasz Napierala is->is_login_phase = false; 1377009ea47eSEdward Tomasz Napierala is->is_timeout = 0; 1378009ea47eSEdward Tomasz Napierala is->is_connected = true; 1379009ea47eSEdward Tomasz Napierala is->is_reason[0] = '\0'; 1380009ea47eSEdward Tomasz Napierala 1381009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1382009ea47eSEdward Tomasz Napierala 138357a4f20bSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 138457a4f20bSEdward Tomasz Napierala if (handoff->idh_socket != 0) { 138557a4f20bSEdward Tomasz Napierala #endif 138657a4f20bSEdward Tomasz Napierala /* 138757a4f20bSEdward Tomasz Napierala * Handoff without using ICL proxy. 138857a4f20bSEdward Tomasz Napierala */ 1389009ea47eSEdward Tomasz Napierala error = icl_conn_handoff(is->is_conn, handoff->idh_socket); 1390009ea47eSEdward Tomasz Napierala if (error != 0) { 1391009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1392009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1393009ea47eSEdward Tomasz Napierala return (error); 1394009ea47eSEdward Tomasz Napierala } 139557a4f20bSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 139657a4f20bSEdward Tomasz Napierala } 1397009ea47eSEdward Tomasz Napierala #endif 1398009ea47eSEdward Tomasz Napierala 1399009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1400009ea47eSEdward Tomasz Napierala 1401009ea47eSEdward Tomasz Napierala if (is->is_sim != NULL) { 1402009ea47eSEdward Tomasz Napierala /* 1403009ea47eSEdward Tomasz Napierala * When reconnecting, there already is SIM allocated for the session. 1404009ea47eSEdward Tomasz Napierala */ 1405009ea47eSEdward Tomasz Napierala KASSERT(is->is_simq_frozen, ("reconnect without frozen simq")); 1406009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1407009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "releasing"); 1408009ea47eSEdward Tomasz Napierala xpt_release_simq(is->is_sim, 1); 1409009ea47eSEdward Tomasz Napierala is->is_simq_frozen = false; 1410009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1411009ea47eSEdward Tomasz Napierala 1412009ea47eSEdward Tomasz Napierala } else { 1413009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1414009ea47eSEdward Tomasz Napierala is->is_devq = cam_simq_alloc(maxtags); 1415009ea47eSEdward Tomasz Napierala if (is->is_devq == NULL) { 1416009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate simq"); 1417009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1418009ea47eSEdward Tomasz Napierala return (ENOMEM); 1419009ea47eSEdward Tomasz Napierala } 1420009ea47eSEdward Tomasz Napierala 1421009ea47eSEdward Tomasz Napierala is->is_sim = cam_sim_alloc(iscsi_action, iscsi_poll, "iscsi", 1422009ea47eSEdward Tomasz Napierala is, is->is_id /* unit */, &is->is_lock, 1423462cf3baSAlexander Motin 1, maxtags, is->is_devq); 1424009ea47eSEdward Tomasz Napierala if (is->is_sim == NULL) { 1425009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1426009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate SIM"); 1427009ea47eSEdward Tomasz Napierala cam_simq_free(is->is_devq); 1428009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1429009ea47eSEdward Tomasz Napierala return (ENOMEM); 1430009ea47eSEdward Tomasz Napierala } 1431009ea47eSEdward Tomasz Napierala 1432009ea47eSEdward Tomasz Napierala error = xpt_bus_register(is->is_sim, NULL, 0); 1433009ea47eSEdward Tomasz Napierala if (error != 0) { 1434009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1435009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to register bus"); 1436009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1437009ea47eSEdward Tomasz Napierala return (ENOMEM); 1438009ea47eSEdward Tomasz Napierala } 1439009ea47eSEdward Tomasz Napierala 1440009ea47eSEdward Tomasz Napierala error = xpt_create_path(&is->is_path, /*periph*/NULL, 1441009ea47eSEdward Tomasz Napierala cam_sim_path(is->is_sim), CAM_TARGET_WILDCARD, 1442009ea47eSEdward Tomasz Napierala CAM_LUN_WILDCARD); 1443009ea47eSEdward Tomasz Napierala if (error != CAM_REQ_CMP) { 1444009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1445009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to create path"); 1446009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1447009ea47eSEdward Tomasz Napierala return (ENOMEM); 1448009ea47eSEdward Tomasz Napierala } 1449009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1450009ea47eSEdward Tomasz Napierala } 1451009ea47eSEdward Tomasz Napierala 1452009ea47eSEdward Tomasz Napierala return (0); 1453009ea47eSEdward Tomasz Napierala } 1454009ea47eSEdward Tomasz Napierala 1455009ea47eSEdward Tomasz Napierala static int 1456009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_fail(struct iscsi_softc *sc, 1457009ea47eSEdward Tomasz Napierala struct iscsi_daemon_fail *fail) 1458009ea47eSEdward Tomasz Napierala { 1459009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1460009ea47eSEdward Tomasz Napierala 1461009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1462009ea47eSEdward Tomasz Napierala 1463009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1464009ea47eSEdward Tomasz Napierala if (is->is_id == fail->idf_session_id) 1465009ea47eSEdward Tomasz Napierala break; 1466009ea47eSEdward Tomasz Napierala } 1467009ea47eSEdward Tomasz Napierala if (is == NULL) { 1468009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1469009ea47eSEdward Tomasz Napierala return (ESRCH); 1470009ea47eSEdward Tomasz Napierala } 1471009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1472009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "iscsid(8) failed: %s", 1473009ea47eSEdward Tomasz Napierala fail->idf_reason); 1474009ea47eSEdward Tomasz Napierala strlcpy(is->is_reason, fail->idf_reason, sizeof(is->is_reason)); 1475009ea47eSEdward Tomasz Napierala //is->is_waiting_for_iscsid = false; 1476009ea47eSEdward Tomasz Napierala //is->is_login_phase = true; 1477009ea47eSEdward Tomasz Napierala //iscsi_session_reconnect(is); 1478009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1479009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1480009ea47eSEdward Tomasz Napierala 1481009ea47eSEdward Tomasz Napierala return (0); 1482009ea47eSEdward Tomasz Napierala } 1483009ea47eSEdward Tomasz Napierala 1484009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 1485009ea47eSEdward Tomasz Napierala static int 1486009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_connect(struct iscsi_softc *sc, 1487009ea47eSEdward Tomasz Napierala struct iscsi_daemon_connect *idc) 1488009ea47eSEdward Tomasz Napierala { 1489009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1490009ea47eSEdward Tomasz Napierala struct sockaddr *from_sa, *to_sa; 1491009ea47eSEdward Tomasz Napierala int error; 1492009ea47eSEdward Tomasz Napierala 1493009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1494009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1495009ea47eSEdward Tomasz Napierala if (is->is_id == idc->idc_session_id) 1496009ea47eSEdward Tomasz Napierala break; 1497009ea47eSEdward Tomasz Napierala } 1498009ea47eSEdward Tomasz Napierala if (is == NULL) { 1499009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1500009ea47eSEdward Tomasz Napierala return (ESRCH); 1501009ea47eSEdward Tomasz Napierala } 1502009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1503009ea47eSEdward Tomasz Napierala 1504009ea47eSEdward Tomasz Napierala if (idc->idc_from_addrlen > 0) { 1505009ea47eSEdward Tomasz Napierala error = getsockaddr(&from_sa, (void *)idc->idc_from_addr, idc->idc_from_addrlen); 150657a4f20bSEdward Tomasz Napierala if (error != 0) { 150757a4f20bSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, 150857a4f20bSEdward Tomasz Napierala "getsockaddr failed with error %d", error); 1509009ea47eSEdward Tomasz Napierala return (error); 151057a4f20bSEdward Tomasz Napierala } 1511009ea47eSEdward Tomasz Napierala } else { 1512009ea47eSEdward Tomasz Napierala from_sa = NULL; 1513009ea47eSEdward Tomasz Napierala } 1514009ea47eSEdward Tomasz Napierala error = getsockaddr(&to_sa, (void *)idc->idc_to_addr, idc->idc_to_addrlen); 1515009ea47eSEdward Tomasz Napierala if (error != 0) { 151657a4f20bSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "getsockaddr failed with error %d", 151757a4f20bSEdward Tomasz Napierala error); 1518009ea47eSEdward Tomasz Napierala free(from_sa, M_SONAME); 1519009ea47eSEdward Tomasz Napierala return (error); 1520009ea47eSEdward Tomasz Napierala } 1521009ea47eSEdward Tomasz Napierala 1522009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1523009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = false; 1524009ea47eSEdward Tomasz Napierala is->is_login_phase = true; 1525009ea47eSEdward Tomasz Napierala is->is_timeout = 0; 1526009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1527009ea47eSEdward Tomasz Napierala 1528009ea47eSEdward Tomasz Napierala error = icl_conn_connect(is->is_conn, idc->idc_iser, idc->idc_domain, 1529009ea47eSEdward Tomasz Napierala idc->idc_socktype, idc->idc_protocol, from_sa, to_sa); 1530009ea47eSEdward Tomasz Napierala free(from_sa, M_SONAME); 1531009ea47eSEdward Tomasz Napierala free(to_sa, M_SONAME); 1532009ea47eSEdward Tomasz Napierala 1533009ea47eSEdward Tomasz Napierala /* 1534009ea47eSEdward Tomasz Napierala * Digests are always disabled during login phase. 1535009ea47eSEdward Tomasz Napierala */ 1536009ea47eSEdward Tomasz Napierala is->is_conn->ic_header_crc32c = false; 1537009ea47eSEdward Tomasz Napierala is->is_conn->ic_data_crc32c = false; 1538009ea47eSEdward Tomasz Napierala 1539009ea47eSEdward Tomasz Napierala return (error); 1540009ea47eSEdward Tomasz Napierala } 1541009ea47eSEdward Tomasz Napierala 1542009ea47eSEdward Tomasz Napierala static int 1543009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_send(struct iscsi_softc *sc, 1544009ea47eSEdward Tomasz Napierala struct iscsi_daemon_send *ids) 1545009ea47eSEdward Tomasz Napierala { 1546009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1547009ea47eSEdward Tomasz Napierala struct icl_pdu *ip; 1548009ea47eSEdward Tomasz Napierala size_t datalen; 1549009ea47eSEdward Tomasz Napierala void *data; 1550009ea47eSEdward Tomasz Napierala int error; 1551009ea47eSEdward Tomasz Napierala 1552009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1553009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1554009ea47eSEdward Tomasz Napierala if (is->is_id == ids->ids_session_id) 1555009ea47eSEdward Tomasz Napierala break; 1556009ea47eSEdward Tomasz Napierala } 1557009ea47eSEdward Tomasz Napierala if (is == NULL) { 1558009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1559009ea47eSEdward Tomasz Napierala return (ESRCH); 1560009ea47eSEdward Tomasz Napierala } 1561009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1562009ea47eSEdward Tomasz Napierala 1563009ea47eSEdward Tomasz Napierala if (is->is_login_phase == false) 1564009ea47eSEdward Tomasz Napierala return (EBUSY); 1565009ea47eSEdward Tomasz Napierala 1566009ea47eSEdward Tomasz Napierala if (is->is_terminating || is->is_reconnecting) 1567009ea47eSEdward Tomasz Napierala return (EIO); 1568009ea47eSEdward Tomasz Napierala 1569009ea47eSEdward Tomasz Napierala datalen = ids->ids_data_segment_len; 1570009ea47eSEdward Tomasz Napierala if (datalen > ISCSI_MAX_DATA_SEGMENT_LENGTH) 1571009ea47eSEdward Tomasz Napierala return (EINVAL); 1572009ea47eSEdward Tomasz Napierala if (datalen > 0) { 1573009ea47eSEdward Tomasz Napierala data = malloc(datalen, M_ISCSI, M_WAITOK); 1574009ea47eSEdward Tomasz Napierala error = copyin(ids->ids_data_segment, data, datalen); 1575009ea47eSEdward Tomasz Napierala if (error != 0) { 1576009ea47eSEdward Tomasz Napierala free(data, M_ISCSI); 1577009ea47eSEdward Tomasz Napierala return (error); 1578009ea47eSEdward Tomasz Napierala } 1579009ea47eSEdward Tomasz Napierala } 1580009ea47eSEdward Tomasz Napierala 1581d2d52b00SEdward Tomasz Napierala ip = icl_pdu_new(is->is_conn, M_WAITOK); 1582009ea47eSEdward Tomasz Napierala memcpy(ip->ip_bhs, ids->ids_bhs, sizeof(*ip->ip_bhs)); 1583009ea47eSEdward Tomasz Napierala if (datalen > 0) { 1584009ea47eSEdward Tomasz Napierala error = icl_pdu_append_data(ip, data, datalen, M_WAITOK); 1585009ea47eSEdward Tomasz Napierala KASSERT(error == 0, ("icl_pdu_append_data(..., M_WAITOK) failed")); 1586009ea47eSEdward Tomasz Napierala free(data, M_ISCSI); 1587009ea47eSEdward Tomasz Napierala } 1588009ea47eSEdward Tomasz Napierala icl_pdu_queue(ip); 1589009ea47eSEdward Tomasz Napierala 1590009ea47eSEdward Tomasz Napierala return (0); 1591009ea47eSEdward Tomasz Napierala } 1592009ea47eSEdward Tomasz Napierala 1593009ea47eSEdward Tomasz Napierala static int 1594009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_receive(struct iscsi_softc *sc, 1595009ea47eSEdward Tomasz Napierala struct iscsi_daemon_receive *idr) 1596009ea47eSEdward Tomasz Napierala { 1597009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1598009ea47eSEdward Tomasz Napierala struct icl_pdu *ip; 1599009ea47eSEdward Tomasz Napierala void *data; 1600009ea47eSEdward Tomasz Napierala 1601009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1602009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1603009ea47eSEdward Tomasz Napierala if (is->is_id == idr->idr_session_id) 1604009ea47eSEdward Tomasz Napierala break; 1605009ea47eSEdward Tomasz Napierala } 1606009ea47eSEdward Tomasz Napierala if (is == NULL) { 1607009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1608009ea47eSEdward Tomasz Napierala return (ESRCH); 1609009ea47eSEdward Tomasz Napierala } 1610009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1611009ea47eSEdward Tomasz Napierala 1612009ea47eSEdward Tomasz Napierala if (is->is_login_phase == false) 1613009ea47eSEdward Tomasz Napierala return (EBUSY); 1614009ea47eSEdward Tomasz Napierala 1615009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1616009ea47eSEdward Tomasz Napierala while (is->is_login_pdu == NULL && 1617009ea47eSEdward Tomasz Napierala is->is_terminating == false && 1618009ea47eSEdward Tomasz Napierala is->is_reconnecting == false) 1619009ea47eSEdward Tomasz Napierala cv_wait(&is->is_login_cv, &is->is_lock); 1620009ea47eSEdward Tomasz Napierala if (is->is_terminating || is->is_reconnecting) { 1621009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1622009ea47eSEdward Tomasz Napierala return (EIO); 1623009ea47eSEdward Tomasz Napierala } 1624009ea47eSEdward Tomasz Napierala ip = is->is_login_pdu; 1625009ea47eSEdward Tomasz Napierala is->is_login_pdu = NULL; 1626009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1627009ea47eSEdward Tomasz Napierala 1628009ea47eSEdward Tomasz Napierala if (ip->ip_data_len > idr->idr_data_segment_len) { 1629009ea47eSEdward Tomasz Napierala icl_pdu_free(ip); 1630009ea47eSEdward Tomasz Napierala return (EMSGSIZE); 1631009ea47eSEdward Tomasz Napierala } 1632009ea47eSEdward Tomasz Napierala 1633009ea47eSEdward Tomasz Napierala copyout(ip->ip_bhs, idr->idr_bhs, sizeof(*ip->ip_bhs)); 1634009ea47eSEdward Tomasz Napierala if (ip->ip_data_len > 0) { 1635009ea47eSEdward Tomasz Napierala data = malloc(ip->ip_data_len, M_ISCSI, M_WAITOK); 1636009ea47eSEdward Tomasz Napierala icl_pdu_get_data(ip, 0, data, ip->ip_data_len); 1637009ea47eSEdward Tomasz Napierala copyout(data, idr->idr_data_segment, ip->ip_data_len); 1638009ea47eSEdward Tomasz Napierala free(data, M_ISCSI); 1639009ea47eSEdward Tomasz Napierala } 1640009ea47eSEdward Tomasz Napierala 1641009ea47eSEdward Tomasz Napierala icl_pdu_free(ip); 1642009ea47eSEdward Tomasz Napierala 1643009ea47eSEdward Tomasz Napierala return (0); 1644009ea47eSEdward Tomasz Napierala } 1645009ea47eSEdward Tomasz Napierala #endif /* ICL_KERNEL_PROXY */ 1646009ea47eSEdward Tomasz Napierala 1647009ea47eSEdward Tomasz Napierala static void 1648009ea47eSEdward Tomasz Napierala iscsi_sanitize_session_conf(struct iscsi_session_conf *isc) 1649009ea47eSEdward Tomasz Napierala { 1650009ea47eSEdward Tomasz Napierala /* 1651009ea47eSEdward Tomasz Napierala * Just make sure all the fields are null-terminated. 1652009ea47eSEdward Tomasz Napierala * 1653009ea47eSEdward Tomasz Napierala * XXX: This is not particularly secure. We should 1654009ea47eSEdward Tomasz Napierala * create our own conf and then copy in relevant 1655009ea47eSEdward Tomasz Napierala * fields. 1656009ea47eSEdward Tomasz Napierala */ 1657009ea47eSEdward Tomasz Napierala isc->isc_initiator[ISCSI_NAME_LEN - 1] = '\0'; 1658009ea47eSEdward Tomasz Napierala isc->isc_initiator_addr[ISCSI_ADDR_LEN - 1] = '\0'; 1659009ea47eSEdward Tomasz Napierala isc->isc_initiator_alias[ISCSI_ALIAS_LEN - 1] = '\0'; 1660009ea47eSEdward Tomasz Napierala isc->isc_target[ISCSI_NAME_LEN - 1] = '\0'; 1661009ea47eSEdward Tomasz Napierala isc->isc_target_addr[ISCSI_ADDR_LEN - 1] = '\0'; 1662009ea47eSEdward Tomasz Napierala isc->isc_user[ISCSI_NAME_LEN - 1] = '\0'; 1663009ea47eSEdward Tomasz Napierala isc->isc_secret[ISCSI_SECRET_LEN - 1] = '\0'; 1664009ea47eSEdward Tomasz Napierala isc->isc_mutual_user[ISCSI_NAME_LEN - 1] = '\0'; 1665009ea47eSEdward Tomasz Napierala isc->isc_mutual_secret[ISCSI_SECRET_LEN - 1] = '\0'; 1666009ea47eSEdward Tomasz Napierala } 1667009ea47eSEdward Tomasz Napierala 166851be90b5SEdward Tomasz Napierala static bool 166951be90b5SEdward Tomasz Napierala iscsi_valid_session_conf(const struct iscsi_session_conf *isc) 167051be90b5SEdward Tomasz Napierala { 167151be90b5SEdward Tomasz Napierala 167251be90b5SEdward Tomasz Napierala if (isc->isc_initiator[0] == '\0') { 167351be90b5SEdward Tomasz Napierala ISCSI_DEBUG("empty isc_initiator"); 167451be90b5SEdward Tomasz Napierala return (false); 167551be90b5SEdward Tomasz Napierala } 167651be90b5SEdward Tomasz Napierala 167751be90b5SEdward Tomasz Napierala if (isc->isc_target_addr[0] == '\0') { 167851be90b5SEdward Tomasz Napierala ISCSI_DEBUG("empty isc_target_addr"); 167951be90b5SEdward Tomasz Napierala return (false); 168051be90b5SEdward Tomasz Napierala } 168151be90b5SEdward Tomasz Napierala 168251be90b5SEdward Tomasz Napierala if (isc->isc_discovery != 0 && isc->isc_target[0] != 0) { 168351be90b5SEdward Tomasz Napierala ISCSI_DEBUG("non-empty isc_target for discovery session"); 168451be90b5SEdward Tomasz Napierala return (false); 168551be90b5SEdward Tomasz Napierala } 168651be90b5SEdward Tomasz Napierala 168751be90b5SEdward Tomasz Napierala if (isc->isc_discovery == 0 && isc->isc_target[0] == 0) { 168851be90b5SEdward Tomasz Napierala ISCSI_DEBUG("empty isc_target for non-discovery session"); 168951be90b5SEdward Tomasz Napierala return (false); 169051be90b5SEdward Tomasz Napierala } 169151be90b5SEdward Tomasz Napierala 169251be90b5SEdward Tomasz Napierala return (true); 169351be90b5SEdward Tomasz Napierala } 169451be90b5SEdward Tomasz Napierala 1695009ea47eSEdward Tomasz Napierala static int 1696009ea47eSEdward Tomasz Napierala iscsi_ioctl_session_add(struct iscsi_softc *sc, struct iscsi_session_add *isa) 1697009ea47eSEdward Tomasz Napierala { 1698009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1699009ea47eSEdward Tomasz Napierala const struct iscsi_session *is2; 1700009ea47eSEdward Tomasz Napierala int error; 1701009ea47eSEdward Tomasz Napierala 1702009ea47eSEdward Tomasz Napierala iscsi_sanitize_session_conf(&isa->isa_conf); 170351be90b5SEdward Tomasz Napierala if (iscsi_valid_session_conf(&isa->isa_conf) == false) 170451be90b5SEdward Tomasz Napierala return (EINVAL); 1705009ea47eSEdward Tomasz Napierala 1706009ea47eSEdward Tomasz Napierala is = malloc(sizeof(*is), M_ISCSI, M_ZERO | M_WAITOK); 1707009ea47eSEdward Tomasz Napierala memcpy(&is->is_conf, &isa->isa_conf, sizeof(is->is_conf)); 1708009ea47eSEdward Tomasz Napierala 1709009ea47eSEdward Tomasz Napierala sx_xlock(&sc->sc_lock); 1710009ea47eSEdward Tomasz Napierala 1711009ea47eSEdward Tomasz Napierala /* 1712009ea47eSEdward Tomasz Napierala * Prevent duplicates. 1713009ea47eSEdward Tomasz Napierala */ 1714009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is2, &sc->sc_sessions, is_next) { 17157843bd03SEdward Tomasz Napierala if (!!is->is_conf.isc_discovery != 17167843bd03SEdward Tomasz Napierala !!is2->is_conf.isc_discovery) 17177843bd03SEdward Tomasz Napierala continue; 17187843bd03SEdward Tomasz Napierala 17197843bd03SEdward Tomasz Napierala if (strcmp(is->is_conf.isc_target_addr, 17207843bd03SEdward Tomasz Napierala is2->is_conf.isc_target_addr) != 0) 17217843bd03SEdward Tomasz Napierala continue; 17227843bd03SEdward Tomasz Napierala 17237843bd03SEdward Tomasz Napierala if (is->is_conf.isc_discovery == 0 && 17247843bd03SEdward Tomasz Napierala strcmp(is->is_conf.isc_target, 17257843bd03SEdward Tomasz Napierala is2->is_conf.isc_target) != 0) 17267843bd03SEdward Tomasz Napierala continue; 17277843bd03SEdward Tomasz Napierala 1728009ea47eSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 17297843bd03SEdward Tomasz Napierala free(is, M_ISCSI); 1730009ea47eSEdward Tomasz Napierala return (EBUSY); 1731009ea47eSEdward Tomasz Napierala } 1732009ea47eSEdward Tomasz Napierala 1733ecba49ddSEdward Tomasz Napierala is->is_conn = icl_conn_new("iscsi", &is->is_lock); 1734009ea47eSEdward Tomasz Napierala is->is_conn->ic_receive = iscsi_receive_callback; 1735009ea47eSEdward Tomasz Napierala is->is_conn->ic_error = iscsi_error_callback; 1736009ea47eSEdward Tomasz Napierala is->is_conn->ic_prv0 = is; 1737009ea47eSEdward Tomasz Napierala TAILQ_INIT(&is->is_outstanding); 173816c158a5SEdward Tomasz Napierala STAILQ_INIT(&is->is_postponed); 1739009ea47eSEdward Tomasz Napierala mtx_init(&is->is_lock, "iscsi_lock", NULL, MTX_DEF); 1740009ea47eSEdward Tomasz Napierala cv_init(&is->is_maintenance_cv, "iscsi_mt"); 1741009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 1742009ea47eSEdward Tomasz Napierala cv_init(&is->is_login_cv, "iscsi_login"); 1743009ea47eSEdward Tomasz Napierala #endif 1744009ea47eSEdward Tomasz Napierala 1745009ea47eSEdward Tomasz Napierala is->is_softc = sc; 1746009ea47eSEdward Tomasz Napierala sc->sc_last_session_id++; 1747009ea47eSEdward Tomasz Napierala is->is_id = sc->sc_last_session_id; 1748ffe82e05SAlexander Motin is->is_isid[0] = 0x80; /* RFC 3720, 10.12.5: 10b, "Random" ISID. */ 1749ffe82e05SAlexander Motin arc4rand(&is->is_isid[1], 5, 0); 1750ffe82e05SAlexander Motin is->is_tsih = 0; 1751009ea47eSEdward Tomasz Napierala callout_init(&is->is_callout, 1); 1752009ea47eSEdward Tomasz Napierala callout_reset(&is->is_callout, 1 * hz, iscsi_callout, is); 1753009ea47eSEdward Tomasz Napierala TAILQ_INSERT_TAIL(&sc->sc_sessions, is, is_next); 1754009ea47eSEdward Tomasz Napierala 1755009ea47eSEdward Tomasz Napierala error = kthread_add(iscsi_maintenance_thread, is, NULL, NULL, 0, 0, "iscsimt"); 1756009ea47eSEdward Tomasz Napierala if (error != 0) { 1757009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "kthread_add(9) failed with error %d", error); 1758009ea47eSEdward Tomasz Napierala return (error); 1759009ea47eSEdward Tomasz Napierala } 1760009ea47eSEdward Tomasz Napierala 1761009ea47eSEdward Tomasz Napierala /* 1762009ea47eSEdward Tomasz Napierala * Trigger immediate reconnection. 1763009ea47eSEdward Tomasz Napierala */ 17642be596adSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1765009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = true; 1766009ea47eSEdward Tomasz Napierala strlcpy(is->is_reason, "Waiting for iscsid(8)", sizeof(is->is_reason)); 17672be596adSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1768009ea47eSEdward Tomasz Napierala cv_signal(&sc->sc_cv); 1769009ea47eSEdward Tomasz Napierala 1770009ea47eSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 1771009ea47eSEdward Tomasz Napierala 1772009ea47eSEdward Tomasz Napierala return (0); 1773009ea47eSEdward Tomasz Napierala } 1774009ea47eSEdward Tomasz Napierala 1775009ea47eSEdward Tomasz Napierala static bool 1776009ea47eSEdward Tomasz Napierala iscsi_session_conf_matches(unsigned int id1, const struct iscsi_session_conf *c1, 1777009ea47eSEdward Tomasz Napierala unsigned int id2, const struct iscsi_session_conf *c2) 1778009ea47eSEdward Tomasz Napierala { 17796cc1e267SEdward Tomasz Napierala 17806cc1e267SEdward Tomasz Napierala if (id2 != 0 && id2 != id1) 1781009ea47eSEdward Tomasz Napierala return (false); 17826cc1e267SEdward Tomasz Napierala if (c2->isc_target[0] != '\0' && 17836cc1e267SEdward Tomasz Napierala strcmp(c1->isc_target, c2->isc_target) != 0) 17846cc1e267SEdward Tomasz Napierala return (false); 17856cc1e267SEdward Tomasz Napierala if (c2->isc_target_addr[0] != '\0' && 17866cc1e267SEdward Tomasz Napierala strcmp(c1->isc_target_addr, c2->isc_target_addr) != 0) 17876cc1e267SEdward Tomasz Napierala return (false); 17886cc1e267SEdward Tomasz Napierala return (true); 1789009ea47eSEdward Tomasz Napierala } 1790009ea47eSEdward Tomasz Napierala 1791009ea47eSEdward Tomasz Napierala static int 1792009ea47eSEdward Tomasz Napierala iscsi_ioctl_session_remove(struct iscsi_softc *sc, 1793009ea47eSEdward Tomasz Napierala struct iscsi_session_remove *isr) 1794009ea47eSEdward Tomasz Napierala { 1795009ea47eSEdward Tomasz Napierala struct iscsi_session *is, *tmp; 1796009ea47eSEdward Tomasz Napierala bool found = false; 1797009ea47eSEdward Tomasz Napierala 1798009ea47eSEdward Tomasz Napierala iscsi_sanitize_session_conf(&isr->isr_conf); 1799009ea47eSEdward Tomasz Napierala 1800009ea47eSEdward Tomasz Napierala sx_xlock(&sc->sc_lock); 1801009ea47eSEdward Tomasz Napierala TAILQ_FOREACH_SAFE(is, &sc->sc_sessions, is_next, tmp) { 1802009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1803009ea47eSEdward Tomasz Napierala if (iscsi_session_conf_matches(is->is_id, &is->is_conf, 1804009ea47eSEdward Tomasz Napierala isr->isr_session_id, &isr->isr_conf)) { 1805009ea47eSEdward Tomasz Napierala found = true; 1806009ea47eSEdward Tomasz Napierala iscsi_session_logout(is); 1807009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1808009ea47eSEdward Tomasz Napierala } 1809009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1810009ea47eSEdward Tomasz Napierala } 1811009ea47eSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 1812009ea47eSEdward Tomasz Napierala 1813009ea47eSEdward Tomasz Napierala if (!found) 1814009ea47eSEdward Tomasz Napierala return (ESRCH); 1815009ea47eSEdward Tomasz Napierala 1816009ea47eSEdward Tomasz Napierala return (0); 1817009ea47eSEdward Tomasz Napierala } 1818009ea47eSEdward Tomasz Napierala 1819009ea47eSEdward Tomasz Napierala static int 1820009ea47eSEdward Tomasz Napierala iscsi_ioctl_session_list(struct iscsi_softc *sc, struct iscsi_session_list *isl) 1821009ea47eSEdward Tomasz Napierala { 1822009ea47eSEdward Tomasz Napierala int error; 1823009ea47eSEdward Tomasz Napierala unsigned int i = 0; 1824009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1825009ea47eSEdward Tomasz Napierala struct iscsi_session_state iss; 1826009ea47eSEdward Tomasz Napierala 1827009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1828009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1829009ea47eSEdward Tomasz Napierala if (i >= isl->isl_nentries) { 1830009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1831009ea47eSEdward Tomasz Napierala return (EMSGSIZE); 1832009ea47eSEdward Tomasz Napierala } 1833009ea47eSEdward Tomasz Napierala memset(&iss, 0, sizeof(iss)); 1834009ea47eSEdward Tomasz Napierala memcpy(&iss.iss_conf, &is->is_conf, sizeof(iss.iss_conf)); 1835009ea47eSEdward Tomasz Napierala iss.iss_id = is->is_id; 1836009ea47eSEdward Tomasz Napierala strlcpy(iss.iss_target_alias, is->is_target_alias, sizeof(iss.iss_target_alias)); 1837009ea47eSEdward Tomasz Napierala strlcpy(iss.iss_reason, is->is_reason, sizeof(iss.iss_reason)); 1838009ea47eSEdward Tomasz Napierala 1839009ea47eSEdward Tomasz Napierala if (is->is_conn->ic_header_crc32c) 1840009ea47eSEdward Tomasz Napierala iss.iss_header_digest = ISCSI_DIGEST_CRC32C; 1841009ea47eSEdward Tomasz Napierala else 1842009ea47eSEdward Tomasz Napierala iss.iss_header_digest = ISCSI_DIGEST_NONE; 1843009ea47eSEdward Tomasz Napierala 1844009ea47eSEdward Tomasz Napierala if (is->is_conn->ic_data_crc32c) 1845009ea47eSEdward Tomasz Napierala iss.iss_data_digest = ISCSI_DIGEST_CRC32C; 1846009ea47eSEdward Tomasz Napierala else 1847009ea47eSEdward Tomasz Napierala iss.iss_data_digest = ISCSI_DIGEST_NONE; 1848009ea47eSEdward Tomasz Napierala 1849009ea47eSEdward Tomasz Napierala iss.iss_max_data_segment_length = is->is_max_data_segment_length; 1850009ea47eSEdward Tomasz Napierala iss.iss_immediate_data = is->is_immediate_data; 1851009ea47eSEdward Tomasz Napierala iss.iss_connected = is->is_connected; 1852009ea47eSEdward Tomasz Napierala 1853009ea47eSEdward Tomasz Napierala error = copyout(&iss, isl->isl_pstates + i, sizeof(iss)); 1854009ea47eSEdward Tomasz Napierala if (error != 0) { 1855009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1856009ea47eSEdward Tomasz Napierala return (error); 1857009ea47eSEdward Tomasz Napierala } 1858009ea47eSEdward Tomasz Napierala i++; 1859009ea47eSEdward Tomasz Napierala } 1860009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1861009ea47eSEdward Tomasz Napierala 1862009ea47eSEdward Tomasz Napierala isl->isl_nentries = i; 1863009ea47eSEdward Tomasz Napierala 1864009ea47eSEdward Tomasz Napierala return (0); 1865009ea47eSEdward Tomasz Napierala } 1866009ea47eSEdward Tomasz Napierala 1867009ea47eSEdward Tomasz Napierala static int 186851be90b5SEdward Tomasz Napierala iscsi_ioctl_session_modify(struct iscsi_softc *sc, 186951be90b5SEdward Tomasz Napierala struct iscsi_session_modify *ism) 187051be90b5SEdward Tomasz Napierala { 187151be90b5SEdward Tomasz Napierala struct iscsi_session *is; 187251be90b5SEdward Tomasz Napierala 187351be90b5SEdward Tomasz Napierala iscsi_sanitize_session_conf(&ism->ism_conf); 187451be90b5SEdward Tomasz Napierala if (iscsi_valid_session_conf(&ism->ism_conf) == false) 187551be90b5SEdward Tomasz Napierala return (EINVAL); 187651be90b5SEdward Tomasz Napierala 187751be90b5SEdward Tomasz Napierala sx_xlock(&sc->sc_lock); 187851be90b5SEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 187951be90b5SEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 188051be90b5SEdward Tomasz Napierala if (is->is_id == ism->ism_session_id) 188151be90b5SEdward Tomasz Napierala break; 188251be90b5SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 188351be90b5SEdward Tomasz Napierala } 188451be90b5SEdward Tomasz Napierala if (is == NULL) { 188551be90b5SEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 188651be90b5SEdward Tomasz Napierala return (ESRCH); 188751be90b5SEdward Tomasz Napierala } 188851be90b5SEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 188951be90b5SEdward Tomasz Napierala 189051be90b5SEdward Tomasz Napierala memcpy(&is->is_conf, &ism->ism_conf, sizeof(is->is_conf)); 189151be90b5SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 189251be90b5SEdward Tomasz Napierala 189351be90b5SEdward Tomasz Napierala iscsi_session_reconnect(is); 189451be90b5SEdward Tomasz Napierala 189551be90b5SEdward Tomasz Napierala return (0); 189651be90b5SEdward Tomasz Napierala } 189751be90b5SEdward Tomasz Napierala 189851be90b5SEdward Tomasz Napierala static int 1899009ea47eSEdward Tomasz Napierala iscsi_ioctl(struct cdev *dev, u_long cmd, caddr_t arg, int mode, 1900009ea47eSEdward Tomasz Napierala struct thread *td) 1901009ea47eSEdward Tomasz Napierala { 1902009ea47eSEdward Tomasz Napierala struct iscsi_softc *sc; 1903009ea47eSEdward Tomasz Napierala 1904009ea47eSEdward Tomasz Napierala sc = dev->si_drv1; 1905009ea47eSEdward Tomasz Napierala 1906009ea47eSEdward Tomasz Napierala switch (cmd) { 1907009ea47eSEdward Tomasz Napierala case ISCSIDWAIT: 1908009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_wait(sc, 1909009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_request *)arg)); 1910009ea47eSEdward Tomasz Napierala case ISCSIDHANDOFF: 1911009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_handoff(sc, 1912009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_handoff *)arg)); 1913009ea47eSEdward Tomasz Napierala case ISCSIDFAIL: 1914009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_fail(sc, 1915009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_fail *)arg)); 1916009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 1917009ea47eSEdward Tomasz Napierala case ISCSIDCONNECT: 1918009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_connect(sc, 1919009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_connect *)arg)); 1920009ea47eSEdward Tomasz Napierala case ISCSIDSEND: 1921009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_send(sc, 1922009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_send *)arg)); 1923009ea47eSEdward Tomasz Napierala case ISCSIDRECEIVE: 1924009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_receive(sc, 1925009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_receive *)arg)); 1926009ea47eSEdward Tomasz Napierala #endif /* ICL_KERNEL_PROXY */ 1927009ea47eSEdward Tomasz Napierala case ISCSISADD: 1928009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_session_add(sc, 1929009ea47eSEdward Tomasz Napierala (struct iscsi_session_add *)arg)); 1930009ea47eSEdward Tomasz Napierala case ISCSISREMOVE: 1931009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_session_remove(sc, 1932009ea47eSEdward Tomasz Napierala (struct iscsi_session_remove *)arg)); 1933009ea47eSEdward Tomasz Napierala case ISCSISLIST: 1934009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_session_list(sc, 1935009ea47eSEdward Tomasz Napierala (struct iscsi_session_list *)arg)); 193651be90b5SEdward Tomasz Napierala case ISCSISMODIFY: 193751be90b5SEdward Tomasz Napierala return (iscsi_ioctl_session_modify(sc, 193851be90b5SEdward Tomasz Napierala (struct iscsi_session_modify *)arg)); 1939009ea47eSEdward Tomasz Napierala default: 1940009ea47eSEdward Tomasz Napierala return (EINVAL); 1941009ea47eSEdward Tomasz Napierala } 1942009ea47eSEdward Tomasz Napierala } 1943009ea47eSEdward Tomasz Napierala 1944009ea47eSEdward Tomasz Napierala static struct iscsi_outstanding * 1945009ea47eSEdward Tomasz Napierala iscsi_outstanding_find(struct iscsi_session *is, uint32_t initiator_task_tag) 1946009ea47eSEdward Tomasz Napierala { 1947009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io; 1948009ea47eSEdward Tomasz Napierala 1949009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 1950009ea47eSEdward Tomasz Napierala 1951009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(io, &is->is_outstanding, io_next) { 1952009ea47eSEdward Tomasz Napierala if (io->io_initiator_task_tag == initiator_task_tag) 1953009ea47eSEdward Tomasz Napierala return (io); 1954009ea47eSEdward Tomasz Napierala } 1955009ea47eSEdward Tomasz Napierala return (NULL); 1956009ea47eSEdward Tomasz Napierala } 1957009ea47eSEdward Tomasz Napierala 1958aa75114cSAlexander Motin static struct iscsi_outstanding * 1959aa75114cSAlexander Motin iscsi_outstanding_find_ccb(struct iscsi_session *is, union ccb *ccb) 1960aa75114cSAlexander Motin { 1961aa75114cSAlexander Motin struct iscsi_outstanding *io; 1962aa75114cSAlexander Motin 1963aa75114cSAlexander Motin ISCSI_SESSION_LOCK_ASSERT(is); 1964aa75114cSAlexander Motin 1965aa75114cSAlexander Motin TAILQ_FOREACH(io, &is->is_outstanding, io_next) { 1966aa75114cSAlexander Motin if (io->io_ccb == ccb) 1967aa75114cSAlexander Motin return (io); 1968aa75114cSAlexander Motin } 1969aa75114cSAlexander Motin return (NULL); 1970aa75114cSAlexander Motin } 1971aa75114cSAlexander Motin 1972aa75114cSAlexander Motin static struct iscsi_outstanding * 1973009ea47eSEdward Tomasz Napierala iscsi_outstanding_add(struct iscsi_session *is, 1974009ea47eSEdward Tomasz Napierala uint32_t initiator_task_tag, union ccb *ccb) 1975009ea47eSEdward Tomasz Napierala { 1976009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io; 1977009ea47eSEdward Tomasz Napierala 1978009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 1979009ea47eSEdward Tomasz Napierala 1980009ea47eSEdward Tomasz Napierala KASSERT(iscsi_outstanding_find(is, initiator_task_tag) == NULL, 1981009ea47eSEdward Tomasz Napierala ("initiator_task_tag 0x%x already added", initiator_task_tag)); 1982009ea47eSEdward Tomasz Napierala 1983009ea47eSEdward Tomasz Napierala io = uma_zalloc(iscsi_outstanding_zone, M_NOWAIT | M_ZERO); 1984009ea47eSEdward Tomasz Napierala if (io == NULL) { 1985009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate %zd bytes", sizeof(*io)); 1986aa75114cSAlexander Motin return (NULL); 1987009ea47eSEdward Tomasz Napierala } 1988009ea47eSEdward Tomasz Napierala io->io_initiator_task_tag = initiator_task_tag; 1989009ea47eSEdward Tomasz Napierala io->io_ccb = ccb; 1990009ea47eSEdward Tomasz Napierala TAILQ_INSERT_TAIL(&is->is_outstanding, io, io_next); 1991aa75114cSAlexander Motin return (io); 1992009ea47eSEdward Tomasz Napierala } 1993009ea47eSEdward Tomasz Napierala 1994009ea47eSEdward Tomasz Napierala static void 1995009ea47eSEdward Tomasz Napierala iscsi_outstanding_remove(struct iscsi_session *is, struct iscsi_outstanding *io) 1996009ea47eSEdward Tomasz Napierala { 1997009ea47eSEdward Tomasz Napierala 1998009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 1999009ea47eSEdward Tomasz Napierala 2000009ea47eSEdward Tomasz Napierala TAILQ_REMOVE(&is->is_outstanding, io, io_next); 2001009ea47eSEdward Tomasz Napierala uma_zfree(iscsi_outstanding_zone, io); 2002009ea47eSEdward Tomasz Napierala } 2003009ea47eSEdward Tomasz Napierala 2004009ea47eSEdward Tomasz Napierala static void 2005aa75114cSAlexander Motin iscsi_action_abort(struct iscsi_session *is, union ccb *ccb) 2006aa75114cSAlexander Motin { 2007aa75114cSAlexander Motin struct icl_pdu *request; 2008aa75114cSAlexander Motin struct iscsi_bhs_task_management_request *bhstmr; 2009aa75114cSAlexander Motin struct ccb_abort *cab = &ccb->cab; 2010aa75114cSAlexander Motin struct iscsi_outstanding *io, *aio; 2011aa75114cSAlexander Motin 2012aa75114cSAlexander Motin ISCSI_SESSION_LOCK_ASSERT(is); 2013aa75114cSAlexander Motin 2014aa75114cSAlexander Motin #if 0 2015aa75114cSAlexander Motin KASSERT(is->is_login_phase == false, ("%s called during Login Phase", __func__)); 2016aa75114cSAlexander Motin #else 2017aa75114cSAlexander Motin if (is->is_login_phase) { 2018aa75114cSAlexander Motin ccb->ccb_h.status = CAM_REQ_ABORTED; 2019aa75114cSAlexander Motin xpt_done(ccb); 2020aa75114cSAlexander Motin return; 2021aa75114cSAlexander Motin } 2022aa75114cSAlexander Motin #endif 2023aa75114cSAlexander Motin 2024aa75114cSAlexander Motin aio = iscsi_outstanding_find_ccb(is, cab->abort_ccb); 2025aa75114cSAlexander Motin if (aio == NULL) { 2026aa75114cSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP; 2027aa75114cSAlexander Motin xpt_done(ccb); 2028aa75114cSAlexander Motin return; 2029aa75114cSAlexander Motin } 2030aa75114cSAlexander Motin 2031d2d52b00SEdward Tomasz Napierala request = icl_pdu_new(is->is_conn, M_NOWAIT); 2032aa75114cSAlexander Motin if (request == NULL) { 2033aa75114cSAlexander Motin ccb->ccb_h.status = CAM_RESRC_UNAVAIL; 2034aa75114cSAlexander Motin xpt_done(ccb); 2035aa75114cSAlexander Motin return; 2036aa75114cSAlexander Motin } 2037aa75114cSAlexander Motin 2038aa75114cSAlexander Motin bhstmr = (struct iscsi_bhs_task_management_request *)request->ip_bhs; 2039aa75114cSAlexander Motin bhstmr->bhstmr_opcode = ISCSI_BHS_OPCODE_TASK_REQUEST; 2040aa75114cSAlexander Motin bhstmr->bhstmr_function = 0x80 | BHSTMR_FUNCTION_ABORT_TASK; 2041aa75114cSAlexander Motin 2042aa75114cSAlexander Motin bhstmr->bhstmr_lun = htobe64(CAM_EXTLUN_BYTE_SWIZZLE(ccb->ccb_h.target_lun)); 2043aa75114cSAlexander Motin bhstmr->bhstmr_initiator_task_tag = is->is_initiator_task_tag; 2044aa75114cSAlexander Motin is->is_initiator_task_tag++; 2045aa75114cSAlexander Motin bhstmr->bhstmr_referenced_task_tag = aio->io_initiator_task_tag; 2046aa75114cSAlexander Motin 2047aa75114cSAlexander Motin io = iscsi_outstanding_add(is, bhstmr->bhstmr_initiator_task_tag, NULL); 2048aa75114cSAlexander Motin if (io == NULL) { 2049aa75114cSAlexander Motin icl_pdu_free(request); 2050aa75114cSAlexander Motin ccb->ccb_h.status = CAM_RESRC_UNAVAIL; 2051aa75114cSAlexander Motin xpt_done(ccb); 2052aa75114cSAlexander Motin return; 2053aa75114cSAlexander Motin } 2054aa75114cSAlexander Motin io->io_datasn = aio->io_initiator_task_tag; 2055aa75114cSAlexander Motin iscsi_pdu_queue_locked(request); 2056aa75114cSAlexander Motin } 2057aa75114cSAlexander Motin 2058aa75114cSAlexander Motin static void 2059009ea47eSEdward Tomasz Napierala iscsi_action_scsiio(struct iscsi_session *is, union ccb *ccb) 2060009ea47eSEdward Tomasz Napierala { 2061009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 2062009ea47eSEdward Tomasz Napierala struct iscsi_bhs_scsi_command *bhssc; 2063009ea47eSEdward Tomasz Napierala struct ccb_scsiio *csio; 2064aa75114cSAlexander Motin struct iscsi_outstanding *io; 2065009ea47eSEdward Tomasz Napierala size_t len; 2066009ea47eSEdward Tomasz Napierala int error; 2067009ea47eSEdward Tomasz Napierala 2068009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 2069009ea47eSEdward Tomasz Napierala 2070009ea47eSEdward Tomasz Napierala #if 0 2071009ea47eSEdward Tomasz Napierala KASSERT(is->is_login_phase == false, ("%s called during Login Phase", __func__)); 2072009ea47eSEdward Tomasz Napierala #else 2073009ea47eSEdward Tomasz Napierala if (is->is_login_phase) { 2074009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "called during login phase"); 2075009ea47eSEdward Tomasz Napierala if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 2076009ea47eSEdward Tomasz Napierala xpt_freeze_devq(ccb->ccb_h.path, 1); 2077009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 2078009ea47eSEdward Tomasz Napierala } 2079009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_REQ_ABORTED | CAM_DEV_QFRZN; 2080009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2081009ea47eSEdward Tomasz Napierala return; 2082009ea47eSEdward Tomasz Napierala } 2083009ea47eSEdward Tomasz Napierala #endif 2084009ea47eSEdward Tomasz Napierala 2085d2d52b00SEdward Tomasz Napierala request = icl_pdu_new(is->is_conn, M_NOWAIT); 2086009ea47eSEdward Tomasz Napierala if (request == NULL) { 2087009ea47eSEdward Tomasz Napierala if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 2088009ea47eSEdward Tomasz Napierala xpt_freeze_devq(ccb->ccb_h.path, 1); 2089009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 2090009ea47eSEdward Tomasz Napierala } 2091009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_RESRC_UNAVAIL | CAM_DEV_QFRZN; 2092009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2093009ea47eSEdward Tomasz Napierala return; 2094009ea47eSEdward Tomasz Napierala } 2095009ea47eSEdward Tomasz Napierala 2096009ea47eSEdward Tomasz Napierala csio = &ccb->csio; 2097009ea47eSEdward Tomasz Napierala bhssc = (struct iscsi_bhs_scsi_command *)request->ip_bhs; 2098009ea47eSEdward Tomasz Napierala bhssc->bhssc_opcode = ISCSI_BHS_OPCODE_SCSI_COMMAND; 2099009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_F; 2100009ea47eSEdward Tomasz Napierala switch (csio->ccb_h.flags & CAM_DIR_MASK) { 2101009ea47eSEdward Tomasz Napierala case CAM_DIR_IN: 2102009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_R; 2103009ea47eSEdward Tomasz Napierala break; 2104009ea47eSEdward Tomasz Napierala case CAM_DIR_OUT: 2105009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_W; 2106009ea47eSEdward Tomasz Napierala break; 2107009ea47eSEdward Tomasz Napierala } 2108009ea47eSEdward Tomasz Napierala 2109462cf3baSAlexander Motin if ((ccb->ccb_h.flags & CAM_TAG_ACTION_VALID) != 0) { 2110009ea47eSEdward Tomasz Napierala switch (csio->tag_action) { 2111009ea47eSEdward Tomasz Napierala case MSG_HEAD_OF_Q_TAG: 2112009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_HOQ; 2113009ea47eSEdward Tomasz Napierala break; 2114009ea47eSEdward Tomasz Napierala case MSG_ORDERED_Q_TAG: 2115009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_ORDERED; 2116009ea47eSEdward Tomasz Napierala break; 2117009ea47eSEdward Tomasz Napierala case MSG_ACA_TASK: 2118009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_ACA; 2119009ea47eSEdward Tomasz Napierala break; 2120009ea47eSEdward Tomasz Napierala case MSG_SIMPLE_Q_TAG: 2121009ea47eSEdward Tomasz Napierala default: 2122009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_SIMPLE; 2123009ea47eSEdward Tomasz Napierala break; 2124009ea47eSEdward Tomasz Napierala } 2125462cf3baSAlexander Motin } else 2126462cf3baSAlexander Motin bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_UNTAGGED; 2127009ea47eSEdward Tomasz Napierala 2128a9f2f291SEdward Tomasz Napierala bhssc->bhssc_lun = htobe64(CAM_EXTLUN_BYTE_SWIZZLE(ccb->ccb_h.target_lun)); 2129009ea47eSEdward Tomasz Napierala bhssc->bhssc_initiator_task_tag = is->is_initiator_task_tag; 2130009ea47eSEdward Tomasz Napierala is->is_initiator_task_tag++; 2131009ea47eSEdward Tomasz Napierala bhssc->bhssc_expected_data_transfer_length = htonl(csio->dxfer_len); 2132009ea47eSEdward Tomasz Napierala KASSERT(csio->cdb_len <= sizeof(bhssc->bhssc_cdb), 2133009ea47eSEdward Tomasz Napierala ("unsupported CDB size %zd", (size_t)csio->cdb_len)); 2134009ea47eSEdward Tomasz Napierala 2135009ea47eSEdward Tomasz Napierala if (csio->ccb_h.flags & CAM_CDB_POINTER) 2136009ea47eSEdward Tomasz Napierala memcpy(&bhssc->bhssc_cdb, csio->cdb_io.cdb_ptr, csio->cdb_len); 2137009ea47eSEdward Tomasz Napierala else 2138009ea47eSEdward Tomasz Napierala memcpy(&bhssc->bhssc_cdb, csio->cdb_io.cdb_bytes, csio->cdb_len); 2139009ea47eSEdward Tomasz Napierala 2140aa75114cSAlexander Motin io = iscsi_outstanding_add(is, bhssc->bhssc_initiator_task_tag, ccb); 2141aa75114cSAlexander Motin if (io == NULL) { 2142009ea47eSEdward Tomasz Napierala icl_pdu_free(request); 2143009ea47eSEdward Tomasz Napierala if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 2144009ea47eSEdward Tomasz Napierala xpt_freeze_devq(ccb->ccb_h.path, 1); 2145009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 2146009ea47eSEdward Tomasz Napierala } 2147009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_RESRC_UNAVAIL | CAM_DEV_QFRZN; 2148009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2149009ea47eSEdward Tomasz Napierala return; 2150009ea47eSEdward Tomasz Napierala } 2151009ea47eSEdward Tomasz Napierala 2152009ea47eSEdward Tomasz Napierala if (is->is_immediate_data && 2153009ea47eSEdward Tomasz Napierala (csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT) { 2154009ea47eSEdward Tomasz Napierala len = csio->dxfer_len; 2155009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "adding %zd of immediate data", len); 2156009ea47eSEdward Tomasz Napierala if (len > is->is_first_burst_length) { 2157009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "len %zd -> %zd", len, is->is_first_burst_length); 2158009ea47eSEdward Tomasz Napierala len = is->is_first_burst_length; 2159009ea47eSEdward Tomasz Napierala } 2160009ea47eSEdward Tomasz Napierala 2161009ea47eSEdward Tomasz Napierala error = icl_pdu_append_data(request, csio->data_ptr, len, M_NOWAIT); 2162009ea47eSEdward Tomasz Napierala if (error != 0) { 2163009ea47eSEdward Tomasz Napierala icl_pdu_free(request); 2164009ea47eSEdward Tomasz Napierala if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 2165009ea47eSEdward Tomasz Napierala xpt_freeze_devq(ccb->ccb_h.path, 1); 2166009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 2167009ea47eSEdward Tomasz Napierala } 2168009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_RESRC_UNAVAIL | CAM_DEV_QFRZN; 2169009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2170009ea47eSEdward Tomasz Napierala return; 2171009ea47eSEdward Tomasz Napierala } 2172009ea47eSEdward Tomasz Napierala } 2173009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(request); 2174009ea47eSEdward Tomasz Napierala } 2175009ea47eSEdward Tomasz Napierala 2176009ea47eSEdward Tomasz Napierala static void 2177009ea47eSEdward Tomasz Napierala iscsi_action(struct cam_sim *sim, union ccb *ccb) 2178009ea47eSEdward Tomasz Napierala { 2179009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 2180009ea47eSEdward Tomasz Napierala 2181009ea47eSEdward Tomasz Napierala is = cam_sim_softc(sim); 2182009ea47eSEdward Tomasz Napierala 2183009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 2184009ea47eSEdward Tomasz Napierala 2185f1f12e40SEdward Tomasz Napierala if (is->is_terminating || 2186f1f12e40SEdward Tomasz Napierala (is->is_connected == false && fail_on_disconnection)) { 2187009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_DEV_NOT_THERE; 2188009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2189009ea47eSEdward Tomasz Napierala return; 2190009ea47eSEdward Tomasz Napierala } 2191009ea47eSEdward Tomasz Napierala 2192009ea47eSEdward Tomasz Napierala switch (ccb->ccb_h.func_code) { 2193009ea47eSEdward Tomasz Napierala case XPT_PATH_INQ: 2194009ea47eSEdward Tomasz Napierala { 2195009ea47eSEdward Tomasz Napierala struct ccb_pathinq *cpi = &ccb->cpi; 2196009ea47eSEdward Tomasz Napierala 2197009ea47eSEdward Tomasz Napierala cpi->version_num = 1; 2198009ea47eSEdward Tomasz Napierala cpi->hba_inquiry = PI_TAG_ABLE; 2199009ea47eSEdward Tomasz Napierala cpi->target_sprt = 0; 2200a9f2f291SEdward Tomasz Napierala cpi->hba_misc = PIM_EXTLUNS; 2201009ea47eSEdward Tomasz Napierala cpi->hba_eng_cnt = 0; 2202009ea47eSEdward Tomasz Napierala cpi->max_target = 0; 220317cf3eb1SEdward Tomasz Napierala /* 220417cf3eb1SEdward Tomasz Napierala * Note that the variable below is only relevant for targets 220517cf3eb1SEdward Tomasz Napierala * that don't claim compliance with anything above SPC2, which 220617cf3eb1SEdward Tomasz Napierala * means they don't support REPORT_LUNS. 220717cf3eb1SEdward Tomasz Napierala */ 220817cf3eb1SEdward Tomasz Napierala cpi->max_lun = 255; 2209a9f2f291SEdward Tomasz Napierala cpi->initiator_id = ~0; 22107843bd03SEdward Tomasz Napierala strlcpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); 22117843bd03SEdward Tomasz Napierala strlcpy(cpi->hba_vid, "iSCSI", HBA_IDLEN); 22127843bd03SEdward Tomasz Napierala strlcpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); 2213009ea47eSEdward Tomasz Napierala cpi->unit_number = cam_sim_unit(sim); 2214009ea47eSEdward Tomasz Napierala cpi->bus_id = cam_sim_bus(sim); 2215009ea47eSEdward Tomasz Napierala cpi->base_transfer_speed = 150000; /* XXX */ 2216009ea47eSEdward Tomasz Napierala cpi->transport = XPORT_ISCSI; 2217009ea47eSEdward Tomasz Napierala cpi->transport_version = 0; 2218009ea47eSEdward Tomasz Napierala cpi->protocol = PROTO_SCSI; 2219009ea47eSEdward Tomasz Napierala cpi->protocol_version = SCSI_REV_SPC3; 2220009ea47eSEdward Tomasz Napierala cpi->maxio = MAXPHYS; 2221009ea47eSEdward Tomasz Napierala cpi->ccb_h.status = CAM_REQ_CMP; 2222009ea47eSEdward Tomasz Napierala break; 2223009ea47eSEdward Tomasz Napierala } 2224462cf3baSAlexander Motin case XPT_GET_TRAN_SETTINGS: 2225462cf3baSAlexander Motin { 2226462cf3baSAlexander Motin struct ccb_trans_settings *cts; 2227462cf3baSAlexander Motin struct ccb_trans_settings_scsi *scsi; 2228462cf3baSAlexander Motin 2229462cf3baSAlexander Motin cts = &ccb->cts; 2230462cf3baSAlexander Motin scsi = &cts->proto_specific.scsi; 2231462cf3baSAlexander Motin 2232462cf3baSAlexander Motin cts->protocol = PROTO_SCSI; 2233462cf3baSAlexander Motin cts->protocol_version = SCSI_REV_SPC3; 2234462cf3baSAlexander Motin cts->transport = XPORT_ISCSI; 2235462cf3baSAlexander Motin cts->transport_version = 0; 2236462cf3baSAlexander Motin scsi->valid = CTS_SCSI_VALID_TQ; 2237462cf3baSAlexander Motin scsi->flags = CTS_SCSI_FLAGS_TAG_ENB; 2238462cf3baSAlexander Motin cts->ccb_h.status = CAM_REQ_CMP; 2239462cf3baSAlexander Motin break; 2240462cf3baSAlexander Motin } 2241009ea47eSEdward Tomasz Napierala case XPT_CALC_GEOMETRY: 2242009ea47eSEdward Tomasz Napierala cam_calc_geometry(&ccb->ccg, /*extended*/1); 2243009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_REQ_CMP; 2244009ea47eSEdward Tomasz Napierala break; 2245009ea47eSEdward Tomasz Napierala #if 0 2246009ea47eSEdward Tomasz Napierala /* 2247009ea47eSEdward Tomasz Napierala * XXX: What's the point? 2248009ea47eSEdward Tomasz Napierala */ 2249009ea47eSEdward Tomasz Napierala case XPT_RESET_BUS: 2250009ea47eSEdward Tomasz Napierala case XPT_TERM_IO: 2251009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "faking success for reset, abort, or term_io"); 2252009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_REQ_CMP; 2253009ea47eSEdward Tomasz Napierala break; 2254009ea47eSEdward Tomasz Napierala #endif 2255aa75114cSAlexander Motin case XPT_ABORT: 2256aa75114cSAlexander Motin iscsi_action_abort(is, ccb); 2257aa75114cSAlexander Motin return; 2258009ea47eSEdward Tomasz Napierala case XPT_SCSI_IO: 2259009ea47eSEdward Tomasz Napierala iscsi_action_scsiio(is, ccb); 2260009ea47eSEdward Tomasz Napierala return; 2261009ea47eSEdward Tomasz Napierala default: 2262009ea47eSEdward Tomasz Napierala #if 0 2263009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "got unsupported code 0x%x", ccb->ccb_h.func_code); 2264009ea47eSEdward Tomasz Napierala #endif 2265009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_FUNC_NOTAVAIL; 2266009ea47eSEdward Tomasz Napierala break; 2267009ea47eSEdward Tomasz Napierala } 2268009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2269009ea47eSEdward Tomasz Napierala } 2270009ea47eSEdward Tomasz Napierala 2271009ea47eSEdward Tomasz Napierala static void 2272009ea47eSEdward Tomasz Napierala iscsi_poll(struct cam_sim *sim) 2273009ea47eSEdward Tomasz Napierala { 2274009ea47eSEdward Tomasz Napierala 2275009ea47eSEdward Tomasz Napierala KASSERT(0, ("%s: you're not supposed to be here", __func__)); 2276009ea47eSEdward Tomasz Napierala } 2277009ea47eSEdward Tomasz Napierala 2278009ea47eSEdward Tomasz Napierala static void 2279009ea47eSEdward Tomasz Napierala iscsi_shutdown(struct iscsi_softc *sc) 2280009ea47eSEdward Tomasz Napierala { 2281009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 2282009ea47eSEdward Tomasz Napierala 2283009ea47eSEdward Tomasz Napierala ISCSI_DEBUG("removing all sessions due to shutdown"); 2284009ea47eSEdward Tomasz Napierala 2285009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 2286009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) 2287009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 2288009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 2289009ea47eSEdward Tomasz Napierala } 2290009ea47eSEdward Tomasz Napierala 2291009ea47eSEdward Tomasz Napierala static int 2292009ea47eSEdward Tomasz Napierala iscsi_load(void) 2293009ea47eSEdward Tomasz Napierala { 2294009ea47eSEdward Tomasz Napierala int error; 2295009ea47eSEdward Tomasz Napierala 2296009ea47eSEdward Tomasz Napierala sc = malloc(sizeof(*sc), M_ISCSI, M_ZERO | M_WAITOK); 2297009ea47eSEdward Tomasz Napierala sx_init(&sc->sc_lock, "iscsi"); 2298009ea47eSEdward Tomasz Napierala TAILQ_INIT(&sc->sc_sessions); 2299009ea47eSEdward Tomasz Napierala cv_init(&sc->sc_cv, "iscsi_cv"); 2300009ea47eSEdward Tomasz Napierala 2301009ea47eSEdward Tomasz Napierala iscsi_outstanding_zone = uma_zcreate("iscsi_outstanding", 2302009ea47eSEdward Tomasz Napierala sizeof(struct iscsi_outstanding), NULL, NULL, NULL, NULL, 2303c28c09c1SEdward Tomasz Napierala UMA_ALIGN_PTR, 0); 2304009ea47eSEdward Tomasz Napierala 2305009ea47eSEdward Tomasz Napierala error = make_dev_p(MAKEDEV_CHECKNAME, &sc->sc_cdev, &iscsi_cdevsw, 2306009ea47eSEdward Tomasz Napierala NULL, UID_ROOT, GID_WHEEL, 0600, "iscsi"); 2307009ea47eSEdward Tomasz Napierala if (error != 0) { 2308009ea47eSEdward Tomasz Napierala ISCSI_WARN("failed to create device node, error %d", error); 2309009ea47eSEdward Tomasz Napierala return (error); 2310009ea47eSEdward Tomasz Napierala } 2311009ea47eSEdward Tomasz Napierala sc->sc_cdev->si_drv1 = sc; 2312009ea47eSEdward Tomasz Napierala 2313009ea47eSEdward Tomasz Napierala /* 2314c4dfe4abSEdward Tomasz Napierala * Note that this needs to get run before dashutdown(). Otherwise, 2315c4dfe4abSEdward Tomasz Napierala * when rebooting with iSCSI session with outstanding requests, 2316c4dfe4abSEdward Tomasz Napierala * but disconnected, dashutdown() will hang on cam_periph_runccb(). 2317009ea47eSEdward Tomasz Napierala */ 2318c4dfe4abSEdward Tomasz Napierala sc->sc_shutdown_eh = EVENTHANDLER_REGISTER(shutdown_post_sync, 2319c4dfe4abSEdward Tomasz Napierala iscsi_shutdown, sc, SHUTDOWN_PRI_FIRST); 2320009ea47eSEdward Tomasz Napierala 2321009ea47eSEdward Tomasz Napierala return (0); 2322009ea47eSEdward Tomasz Napierala } 2323009ea47eSEdward Tomasz Napierala 2324009ea47eSEdward Tomasz Napierala static int 2325009ea47eSEdward Tomasz Napierala iscsi_unload(void) 2326009ea47eSEdward Tomasz Napierala { 2327009ea47eSEdward Tomasz Napierala struct iscsi_session *is, *tmp; 2328009ea47eSEdward Tomasz Napierala 2329a667cf73SEdward Tomasz Napierala if (sc->sc_cdev != NULL) { 2330009ea47eSEdward Tomasz Napierala ISCSI_DEBUG("removing device node"); 2331009ea47eSEdward Tomasz Napierala destroy_dev(sc->sc_cdev); 2332009ea47eSEdward Tomasz Napierala ISCSI_DEBUG("device node removed"); 2333a667cf73SEdward Tomasz Napierala } 2334009ea47eSEdward Tomasz Napierala 2335a667cf73SEdward Tomasz Napierala if (sc->sc_shutdown_eh != NULL) 2336009ea47eSEdward Tomasz Napierala EVENTHANDLER_DEREGISTER(shutdown_post_sync, sc->sc_shutdown_eh); 2337009ea47eSEdward Tomasz Napierala 2338009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 2339009ea47eSEdward Tomasz Napierala TAILQ_FOREACH_SAFE(is, &sc->sc_sessions, is_next, tmp) 2340009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 2341009ea47eSEdward Tomasz Napierala while(!TAILQ_EMPTY(&sc->sc_sessions)) { 2342009ea47eSEdward Tomasz Napierala ISCSI_DEBUG("waiting for sessions to terminate"); 2343009ea47eSEdward Tomasz Napierala cv_wait(&sc->sc_cv, &sc->sc_lock); 2344009ea47eSEdward Tomasz Napierala } 2345009ea47eSEdward Tomasz Napierala ISCSI_DEBUG("all sessions terminated"); 2346009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 2347009ea47eSEdward Tomasz Napierala 2348009ea47eSEdward Tomasz Napierala uma_zdestroy(iscsi_outstanding_zone); 2349009ea47eSEdward Tomasz Napierala sx_destroy(&sc->sc_lock); 2350009ea47eSEdward Tomasz Napierala cv_destroy(&sc->sc_cv); 2351009ea47eSEdward Tomasz Napierala free(sc, M_ISCSI); 2352009ea47eSEdward Tomasz Napierala return (0); 2353009ea47eSEdward Tomasz Napierala } 2354009ea47eSEdward Tomasz Napierala 2355009ea47eSEdward Tomasz Napierala static int 2356009ea47eSEdward Tomasz Napierala iscsi_quiesce(void) 2357009ea47eSEdward Tomasz Napierala { 2358009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 2359009ea47eSEdward Tomasz Napierala if (!TAILQ_EMPTY(&sc->sc_sessions)) { 2360009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 2361009ea47eSEdward Tomasz Napierala return (EBUSY); 2362009ea47eSEdward Tomasz Napierala } 2363009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 2364009ea47eSEdward Tomasz Napierala return (0); 2365009ea47eSEdward Tomasz Napierala } 2366009ea47eSEdward Tomasz Napierala 2367009ea47eSEdward Tomasz Napierala static int 2368009ea47eSEdward Tomasz Napierala iscsi_modevent(module_t mod, int what, void *arg) 2369009ea47eSEdward Tomasz Napierala { 2370009ea47eSEdward Tomasz Napierala int error; 2371009ea47eSEdward Tomasz Napierala 2372009ea47eSEdward Tomasz Napierala switch (what) { 2373009ea47eSEdward Tomasz Napierala case MOD_LOAD: 2374009ea47eSEdward Tomasz Napierala error = iscsi_load(); 2375009ea47eSEdward Tomasz Napierala break; 2376009ea47eSEdward Tomasz Napierala case MOD_UNLOAD: 2377009ea47eSEdward Tomasz Napierala error = iscsi_unload(); 2378009ea47eSEdward Tomasz Napierala break; 2379009ea47eSEdward Tomasz Napierala case MOD_QUIESCE: 2380009ea47eSEdward Tomasz Napierala error = iscsi_quiesce(); 2381009ea47eSEdward Tomasz Napierala break; 2382009ea47eSEdward Tomasz Napierala default: 2383009ea47eSEdward Tomasz Napierala error = EINVAL; 2384009ea47eSEdward Tomasz Napierala break; 2385009ea47eSEdward Tomasz Napierala } 2386009ea47eSEdward Tomasz Napierala return (error); 2387009ea47eSEdward Tomasz Napierala } 2388009ea47eSEdward Tomasz Napierala 2389009ea47eSEdward Tomasz Napierala moduledata_t iscsi_data = { 2390009ea47eSEdward Tomasz Napierala "iscsi", 2391009ea47eSEdward Tomasz Napierala iscsi_modevent, 2392009ea47eSEdward Tomasz Napierala 0 2393009ea47eSEdward Tomasz Napierala }; 2394009ea47eSEdward Tomasz Napierala 2395009ea47eSEdward Tomasz Napierala DECLARE_MODULE(iscsi, iscsi_data, SI_SUB_DRIVERS, SI_ORDER_MIDDLE); 2396009ea47eSEdward Tomasz Napierala MODULE_DEPEND(iscsi, cam, 1, 1, 1); 2397009ea47eSEdward Tomasz Napierala MODULE_DEPEND(iscsi, icl, 1, 1, 1); 2398