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) 142009ea47eSEdward Tomasz Napierala 143009ea47eSEdward Tomasz Napierala static int iscsi_ioctl(struct cdev *dev, u_long cmd, caddr_t arg, 144009ea47eSEdward Tomasz Napierala int mode, struct thread *td); 145009ea47eSEdward Tomasz Napierala 146009ea47eSEdward Tomasz Napierala static struct cdevsw iscsi_cdevsw = { 147009ea47eSEdward Tomasz Napierala .d_version = D_VERSION, 148009ea47eSEdward Tomasz Napierala .d_ioctl = iscsi_ioctl, 149009ea47eSEdward Tomasz Napierala .d_name = "iscsi", 150009ea47eSEdward Tomasz Napierala }; 151009ea47eSEdward Tomasz Napierala 152009ea47eSEdward Tomasz Napierala static void iscsi_pdu_queue_locked(struct icl_pdu *request); 153009ea47eSEdward Tomasz Napierala static void iscsi_pdu_queue(struct icl_pdu *request); 154009ea47eSEdward Tomasz Napierala static void iscsi_pdu_update_statsn(const struct icl_pdu *response); 155009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_nop_in(struct icl_pdu *response); 156009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_scsi_response(struct icl_pdu *response); 157aa75114cSAlexander Motin static void iscsi_pdu_handle_task_response(struct icl_pdu *response); 158009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_data_in(struct icl_pdu *response); 159009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_logout_response(struct icl_pdu *response); 160009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_r2t(struct icl_pdu *response); 161009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_async_message(struct icl_pdu *response); 162009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_reject(struct icl_pdu *response); 163009ea47eSEdward Tomasz Napierala static void iscsi_session_reconnect(struct iscsi_session *is); 164009ea47eSEdward Tomasz Napierala static void iscsi_session_terminate(struct iscsi_session *is); 165009ea47eSEdward Tomasz Napierala static void iscsi_action(struct cam_sim *sim, union ccb *ccb); 166009ea47eSEdward Tomasz Napierala static void iscsi_poll(struct cam_sim *sim); 167009ea47eSEdward Tomasz Napierala static struct iscsi_outstanding *iscsi_outstanding_find(struct iscsi_session *is, 168009ea47eSEdward Tomasz Napierala uint32_t initiator_task_tag); 169aa75114cSAlexander Motin static struct iscsi_outstanding *iscsi_outstanding_add(struct iscsi_session *is, 170009ea47eSEdward Tomasz Napierala uint32_t initiator_task_tag, union ccb *ccb); 171009ea47eSEdward Tomasz Napierala static void iscsi_outstanding_remove(struct iscsi_session *is, 172009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io); 173009ea47eSEdward Tomasz Napierala 174009ea47eSEdward Tomasz Napierala static bool 175009ea47eSEdward Tomasz Napierala iscsi_pdu_prepare(struct icl_pdu *request) 176009ea47eSEdward Tomasz Napierala { 177009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 178009ea47eSEdward Tomasz Napierala struct iscsi_bhs_scsi_command *bhssc; 179009ea47eSEdward Tomasz Napierala 180009ea47eSEdward Tomasz Napierala is = PDU_SESSION(request); 181009ea47eSEdward Tomasz Napierala 182009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 183009ea47eSEdward Tomasz Napierala 184009ea47eSEdward Tomasz Napierala /* 185009ea47eSEdward Tomasz Napierala * We're only using fields common for all the request 186009ea47eSEdward Tomasz Napierala * (initiator -> target) PDUs. 187009ea47eSEdward Tomasz Napierala */ 188009ea47eSEdward Tomasz Napierala bhssc = (struct iscsi_bhs_scsi_command *)request->ip_bhs; 189009ea47eSEdward Tomasz Napierala 190009ea47eSEdward Tomasz Napierala /* 191009ea47eSEdward Tomasz Napierala * Data-Out PDU does not contain CmdSN. 192009ea47eSEdward Tomasz Napierala */ 193009ea47eSEdward Tomasz Napierala if (bhssc->bhssc_opcode != ISCSI_BHS_OPCODE_SCSI_DATA_OUT) { 194009ea47eSEdward Tomasz Napierala if (is->is_cmdsn > is->is_maxcmdsn && 195009ea47eSEdward Tomasz Napierala (bhssc->bhssc_opcode & ISCSI_BHS_OPCODE_IMMEDIATE) == 0) { 196009ea47eSEdward Tomasz Napierala /* 197009ea47eSEdward Tomasz Napierala * Current MaxCmdSN prevents us from sending any more 198009ea47eSEdward Tomasz Napierala * SCSI Command PDUs to the target; postpone the PDU. 199009ea47eSEdward Tomasz Napierala * It will get resent by either iscsi_pdu_queue(), 200009ea47eSEdward Tomasz Napierala * or by maintenance thread. 201009ea47eSEdward Tomasz Napierala */ 202009ea47eSEdward Tomasz Napierala #if 0 203009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "postponing send, CmdSN %d, ExpCmdSN %d, MaxCmdSN %d, opcode 0x%x", 204009ea47eSEdward Tomasz Napierala is->is_cmdsn, is->is_expcmdsn, is->is_maxcmdsn, bhssc->bhssc_opcode); 205009ea47eSEdward Tomasz Napierala #endif 206009ea47eSEdward Tomasz Napierala return (true); 207009ea47eSEdward Tomasz Napierala } 208009ea47eSEdward Tomasz Napierala bhssc->bhssc_cmdsn = htonl(is->is_cmdsn); 209009ea47eSEdward Tomasz Napierala if ((bhssc->bhssc_opcode & ISCSI_BHS_OPCODE_IMMEDIATE) == 0) 210009ea47eSEdward Tomasz Napierala is->is_cmdsn++; 211009ea47eSEdward Tomasz Napierala } 212009ea47eSEdward Tomasz Napierala bhssc->bhssc_expstatsn = htonl(is->is_statsn + 1); 213009ea47eSEdward Tomasz Napierala 214009ea47eSEdward Tomasz Napierala return (false); 215009ea47eSEdward Tomasz Napierala } 216009ea47eSEdward Tomasz Napierala 217009ea47eSEdward Tomasz Napierala static void 218009ea47eSEdward Tomasz Napierala iscsi_session_send_postponed(struct iscsi_session *is) 219009ea47eSEdward Tomasz Napierala { 220009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 221009ea47eSEdward Tomasz Napierala bool postpone; 222009ea47eSEdward Tomasz Napierala 223009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 224009ea47eSEdward Tomasz Napierala 22516c158a5SEdward Tomasz Napierala while (!STAILQ_EMPTY(&is->is_postponed)) { 22616c158a5SEdward Tomasz Napierala request = STAILQ_FIRST(&is->is_postponed); 227009ea47eSEdward Tomasz Napierala postpone = iscsi_pdu_prepare(request); 228009ea47eSEdward Tomasz Napierala if (postpone) 229009ea47eSEdward Tomasz Napierala break; 23016c158a5SEdward Tomasz Napierala STAILQ_REMOVE_HEAD(&is->is_postponed, ip_next); 231009ea47eSEdward Tomasz Napierala icl_pdu_queue(request); 232009ea47eSEdward Tomasz Napierala } 233009ea47eSEdward Tomasz Napierala } 234009ea47eSEdward Tomasz Napierala 235009ea47eSEdward Tomasz Napierala static void 236009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(struct icl_pdu *request) 237009ea47eSEdward Tomasz Napierala { 238009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 239009ea47eSEdward Tomasz Napierala bool postpone; 240009ea47eSEdward Tomasz Napierala 241009ea47eSEdward Tomasz Napierala is = PDU_SESSION(request); 242009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 243009ea47eSEdward Tomasz Napierala iscsi_session_send_postponed(is); 244009ea47eSEdward Tomasz Napierala postpone = iscsi_pdu_prepare(request); 245009ea47eSEdward Tomasz Napierala if (postpone) { 24616c158a5SEdward Tomasz Napierala STAILQ_INSERT_TAIL(&is->is_postponed, request, ip_next); 247009ea47eSEdward Tomasz Napierala return; 248009ea47eSEdward Tomasz Napierala } 249009ea47eSEdward Tomasz Napierala icl_pdu_queue(request); 250009ea47eSEdward Tomasz Napierala } 251009ea47eSEdward Tomasz Napierala 252009ea47eSEdward Tomasz Napierala static void 253009ea47eSEdward Tomasz Napierala iscsi_pdu_queue(struct icl_pdu *request) 254009ea47eSEdward Tomasz Napierala { 255009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 256009ea47eSEdward Tomasz Napierala 257009ea47eSEdward Tomasz Napierala is = PDU_SESSION(request); 258009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 259009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(request); 260009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 261009ea47eSEdward Tomasz Napierala } 262009ea47eSEdward Tomasz Napierala 263009ea47eSEdward Tomasz Napierala static void 264009ea47eSEdward Tomasz Napierala iscsi_session_logout(struct iscsi_session *is) 265009ea47eSEdward Tomasz Napierala { 266009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 267009ea47eSEdward Tomasz Napierala struct iscsi_bhs_logout_request *bhslr; 268009ea47eSEdward Tomasz Napierala 269009ea47eSEdward Tomasz Napierala request = icl_pdu_new_bhs(is->is_conn, M_NOWAIT); 270009ea47eSEdward Tomasz Napierala if (request == NULL) 271009ea47eSEdward Tomasz Napierala return; 272009ea47eSEdward Tomasz Napierala 273009ea47eSEdward Tomasz Napierala bhslr = (struct iscsi_bhs_logout_request *)request->ip_bhs; 274009ea47eSEdward Tomasz Napierala bhslr->bhslr_opcode = ISCSI_BHS_OPCODE_LOGOUT_REQUEST; 275009ea47eSEdward Tomasz Napierala bhslr->bhslr_reason = BHSLR_REASON_CLOSE_SESSION; 276009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(request); 277009ea47eSEdward Tomasz Napierala } 278009ea47eSEdward Tomasz Napierala 279009ea47eSEdward Tomasz Napierala static void 280aa75114cSAlexander Motin iscsi_session_terminate_task(struct iscsi_session *is, 281aa75114cSAlexander Motin struct iscsi_outstanding *io, bool requeue) 282aa75114cSAlexander Motin { 283aa75114cSAlexander Motin 284aa75114cSAlexander Motin if (io->io_ccb != NULL) { 285aa75114cSAlexander Motin io->io_ccb->ccb_h.status &= ~(CAM_SIM_QUEUED | CAM_STATUS_MASK); 286aa75114cSAlexander Motin if (requeue) 287aa75114cSAlexander Motin io->io_ccb->ccb_h.status |= CAM_REQUEUE_REQ; 288aa75114cSAlexander Motin else 289aa75114cSAlexander Motin io->io_ccb->ccb_h.status |= CAM_REQ_ABORTED; 290aa75114cSAlexander Motin if ((io->io_ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 291aa75114cSAlexander Motin io->io_ccb->ccb_h.status |= CAM_DEV_QFRZN; 292aa75114cSAlexander Motin xpt_freeze_devq(io->io_ccb->ccb_h.path, 1); 293aa75114cSAlexander Motin ISCSI_SESSION_DEBUG(is, "freezing devq"); 294aa75114cSAlexander Motin } 295aa75114cSAlexander Motin xpt_done(io->io_ccb); 296aa75114cSAlexander Motin } 297aa75114cSAlexander Motin iscsi_outstanding_remove(is, io); 298aa75114cSAlexander Motin } 299aa75114cSAlexander Motin 300aa75114cSAlexander Motin static void 301009ea47eSEdward Tomasz Napierala iscsi_session_terminate_tasks(struct iscsi_session *is, bool requeue) 302009ea47eSEdward Tomasz Napierala { 303009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io, *tmp; 304009ea47eSEdward Tomasz Napierala 305009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 306009ea47eSEdward Tomasz Napierala 307009ea47eSEdward Tomasz Napierala TAILQ_FOREACH_SAFE(io, &is->is_outstanding, io_next, tmp) { 308aa75114cSAlexander Motin iscsi_session_terminate_task(is, io, requeue); 309009ea47eSEdward Tomasz Napierala } 310009ea47eSEdward Tomasz Napierala } 311009ea47eSEdward Tomasz Napierala 312009ea47eSEdward Tomasz Napierala static void 313f1f12e40SEdward Tomasz Napierala iscsi_session_cleanup(struct iscsi_session *is, bool destroy_sim) 314009ea47eSEdward Tomasz Napierala { 315009ea47eSEdward Tomasz Napierala struct icl_pdu *pdu; 316009ea47eSEdward Tomasz Napierala 317f1f12e40SEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 318009ea47eSEdward Tomasz Napierala 319009ea47eSEdward Tomasz Napierala /* 320009ea47eSEdward Tomasz Napierala * Don't queue any new PDUs. 321009ea47eSEdward Tomasz Napierala */ 322009ea47eSEdward Tomasz Napierala if (is->is_sim != NULL && is->is_simq_frozen == false) { 323009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing"); 324009ea47eSEdward Tomasz Napierala xpt_freeze_simq(is->is_sim, 1); 325009ea47eSEdward Tomasz Napierala is->is_simq_frozen = true; 326009ea47eSEdward Tomasz Napierala } 327009ea47eSEdward Tomasz Napierala 328009ea47eSEdward Tomasz Napierala /* 329009ea47eSEdward Tomasz Napierala * Remove postponed PDUs. 330009ea47eSEdward Tomasz Napierala */ 33116c158a5SEdward Tomasz Napierala while (!STAILQ_EMPTY(&is->is_postponed)) { 33216c158a5SEdward Tomasz Napierala pdu = STAILQ_FIRST(&is->is_postponed); 33316c158a5SEdward Tomasz Napierala STAILQ_REMOVE_HEAD(&is->is_postponed, ip_next); 334009ea47eSEdward Tomasz Napierala icl_pdu_free(pdu); 335009ea47eSEdward Tomasz Napierala } 336009ea47eSEdward Tomasz Napierala 337f1f12e40SEdward Tomasz Napierala if (destroy_sim == false) { 338009ea47eSEdward Tomasz Napierala /* 339009ea47eSEdward Tomasz Napierala * Terminate SCSI tasks, asking CAM to requeue them. 340009ea47eSEdward Tomasz Napierala */ 341009ea47eSEdward Tomasz Napierala iscsi_session_terminate_tasks(is, true); 342f1f12e40SEdward Tomasz Napierala return; 343f1f12e40SEdward Tomasz Napierala } 344f1f12e40SEdward Tomasz Napierala 345f1f12e40SEdward Tomasz Napierala iscsi_session_terminate_tasks(is, false); 346f1f12e40SEdward Tomasz Napierala 347f1f12e40SEdward Tomasz Napierala if (is->is_sim == NULL) 348f1f12e40SEdward Tomasz Napierala return; 349f1f12e40SEdward Tomasz Napierala 350f1f12e40SEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "deregistering SIM"); 351f1f12e40SEdward Tomasz Napierala xpt_async(AC_LOST_DEVICE, is->is_path, NULL); 352f1f12e40SEdward Tomasz Napierala 353f1f12e40SEdward Tomasz Napierala if (is->is_simq_frozen) { 354f1f12e40SEdward Tomasz Napierala xpt_release_simq(is->is_sim, 1); 355f1f12e40SEdward Tomasz Napierala is->is_simq_frozen = false; 356f1f12e40SEdward Tomasz Napierala } 357f1f12e40SEdward Tomasz Napierala 358f1f12e40SEdward Tomasz Napierala xpt_free_path(is->is_path); 359f1f12e40SEdward Tomasz Napierala is->is_path = NULL; 360f1f12e40SEdward Tomasz Napierala xpt_bus_deregister(cam_sim_path(is->is_sim)); 361f1f12e40SEdward Tomasz Napierala cam_sim_free(is->is_sim, TRUE /*free_devq*/); 362f1f12e40SEdward Tomasz Napierala is->is_sim = NULL; 363f1f12e40SEdward Tomasz Napierala is->is_devq = NULL; 364f1f12e40SEdward Tomasz Napierala } 365f1f12e40SEdward Tomasz Napierala 366f1f12e40SEdward Tomasz Napierala static void 367f1f12e40SEdward Tomasz Napierala iscsi_maintenance_thread_reconnect(struct iscsi_session *is) 368f1f12e40SEdward Tomasz Napierala { 369f1f12e40SEdward Tomasz Napierala 370f1f12e40SEdward Tomasz Napierala icl_conn_shutdown(is->is_conn); 371f1f12e40SEdward Tomasz Napierala icl_conn_close(is->is_conn); 372f1f12e40SEdward Tomasz Napierala 373f1f12e40SEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 374f1f12e40SEdward Tomasz Napierala 375f1f12e40SEdward Tomasz Napierala is->is_connected = false; 376f1f12e40SEdward Tomasz Napierala is->is_reconnecting = false; 377f1f12e40SEdward Tomasz Napierala is->is_login_phase = false; 378f1f12e40SEdward Tomasz Napierala 379f1f12e40SEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 380f1f12e40SEdward Tomasz Napierala if (is->is_login_pdu != NULL) { 381f1f12e40SEdward Tomasz Napierala icl_pdu_free(is->is_login_pdu); 382f1f12e40SEdward Tomasz Napierala is->is_login_pdu = NULL; 383f1f12e40SEdward Tomasz Napierala } 384f1f12e40SEdward Tomasz Napierala cv_signal(&is->is_login_cv); 385f1f12e40SEdward Tomasz Napierala #endif 386f1f12e40SEdward Tomasz Napierala 387f1f12e40SEdward Tomasz Napierala if (fail_on_disconnection) { 388f1f12e40SEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "connection failed, destroying devices"); 389f1f12e40SEdward Tomasz Napierala iscsi_session_cleanup(is, true); 390f1f12e40SEdward Tomasz Napierala } else { 391f1f12e40SEdward Tomasz Napierala iscsi_session_cleanup(is, false); 392f1f12e40SEdward Tomasz Napierala } 393009ea47eSEdward Tomasz Napierala 394009ea47eSEdward Tomasz Napierala KASSERT(TAILQ_EMPTY(&is->is_outstanding), 395009ea47eSEdward Tomasz Napierala ("destroying session with active tasks")); 39616c158a5SEdward Tomasz Napierala KASSERT(STAILQ_EMPTY(&is->is_postponed), 397009ea47eSEdward Tomasz Napierala ("destroying session with postponed PDUs")); 398009ea47eSEdward Tomasz Napierala 399009ea47eSEdward Tomasz Napierala /* 400009ea47eSEdward Tomasz Napierala * Request immediate reconnection from iscsid(8). 401009ea47eSEdward Tomasz Napierala */ 402009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "waking up iscsid(8)"); 403009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = true; 404009ea47eSEdward Tomasz Napierala strlcpy(is->is_reason, "Waiting for iscsid(8)", sizeof(is->is_reason)); 405009ea47eSEdward Tomasz Napierala is->is_timeout = 0; 406009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 407009ea47eSEdward Tomasz Napierala cv_signal(&is->is_softc->sc_cv); 408009ea47eSEdward Tomasz Napierala } 409009ea47eSEdward Tomasz Napierala 410009ea47eSEdward Tomasz Napierala static void 411009ea47eSEdward Tomasz Napierala iscsi_maintenance_thread_terminate(struct iscsi_session *is) 412009ea47eSEdward Tomasz Napierala { 413009ea47eSEdward Tomasz Napierala struct iscsi_softc *sc; 414009ea47eSEdward Tomasz Napierala 415009ea47eSEdward Tomasz Napierala sc = is->is_softc; 416009ea47eSEdward Tomasz Napierala sx_xlock(&sc->sc_lock); 417009ea47eSEdward Tomasz Napierala TAILQ_REMOVE(&sc->sc_sessions, is, is_next); 418009ea47eSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 419009ea47eSEdward Tomasz Napierala 420009ea47eSEdward Tomasz Napierala icl_conn_close(is->is_conn); 421009ea47eSEdward Tomasz Napierala 422009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 423009ea47eSEdward Tomasz Napierala 424009ea47eSEdward Tomasz Napierala KASSERT(is->is_terminating, ("is_terminating == false")); 425009ea47eSEdward Tomasz Napierala 426009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 427009ea47eSEdward Tomasz Napierala if (is->is_login_pdu != NULL) { 428009ea47eSEdward Tomasz Napierala icl_pdu_free(is->is_login_pdu); 429009ea47eSEdward Tomasz Napierala is->is_login_pdu = NULL; 430009ea47eSEdward Tomasz Napierala } 431009ea47eSEdward Tomasz Napierala cv_signal(&is->is_login_cv); 432009ea47eSEdward Tomasz Napierala #endif 433009ea47eSEdward Tomasz Napierala 434009ea47eSEdward Tomasz Napierala callout_drain(&is->is_callout); 435009ea47eSEdward Tomasz Napierala 436f1f12e40SEdward Tomasz Napierala iscsi_session_cleanup(is, true); 437009ea47eSEdward Tomasz Napierala 438009ea47eSEdward Tomasz Napierala KASSERT(TAILQ_EMPTY(&is->is_outstanding), 439009ea47eSEdward Tomasz Napierala ("destroying session with active tasks")); 44016c158a5SEdward Tomasz Napierala KASSERT(STAILQ_EMPTY(&is->is_postponed), 441009ea47eSEdward Tomasz Napierala ("destroying session with postponed PDUs")); 442009ea47eSEdward Tomasz Napierala 443009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 444009ea47eSEdward Tomasz Napierala 445009ea47eSEdward Tomasz Napierala icl_conn_free(is->is_conn); 446009ea47eSEdward Tomasz Napierala mtx_destroy(&is->is_lock); 447009ea47eSEdward Tomasz Napierala cv_destroy(&is->is_maintenance_cv); 448009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 449009ea47eSEdward Tomasz Napierala cv_destroy(&is->is_login_cv); 450009ea47eSEdward Tomasz Napierala #endif 451009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "terminated"); 452009ea47eSEdward Tomasz Napierala free(is, M_ISCSI); 453009ea47eSEdward Tomasz Napierala 454009ea47eSEdward Tomasz Napierala /* 455009ea47eSEdward Tomasz Napierala * The iscsi_unload() routine might be waiting. 456009ea47eSEdward Tomasz Napierala */ 457009ea47eSEdward Tomasz Napierala cv_signal(&sc->sc_cv); 458009ea47eSEdward Tomasz Napierala } 459009ea47eSEdward Tomasz Napierala 460009ea47eSEdward Tomasz Napierala static void 461009ea47eSEdward Tomasz Napierala iscsi_maintenance_thread(void *arg) 462009ea47eSEdward Tomasz Napierala { 463009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 464009ea47eSEdward Tomasz Napierala 465009ea47eSEdward Tomasz Napierala is = arg; 466009ea47eSEdward Tomasz Napierala 467009ea47eSEdward Tomasz Napierala for (;;) { 468009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 469009ea47eSEdward Tomasz Napierala if (is->is_reconnecting == false && 470009ea47eSEdward Tomasz Napierala is->is_terminating == false && 47116c158a5SEdward Tomasz Napierala STAILQ_EMPTY(&is->is_postponed)) 472009ea47eSEdward Tomasz Napierala cv_wait(&is->is_maintenance_cv, &is->is_lock); 473009ea47eSEdward Tomasz Napierala 474009ea47eSEdward Tomasz Napierala if (is->is_reconnecting) { 475009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 476009ea47eSEdward Tomasz Napierala iscsi_maintenance_thread_reconnect(is); 477009ea47eSEdward Tomasz Napierala continue; 478009ea47eSEdward Tomasz Napierala } 479009ea47eSEdward Tomasz Napierala 480009ea47eSEdward Tomasz Napierala if (is->is_terminating) { 481009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 482009ea47eSEdward Tomasz Napierala iscsi_maintenance_thread_terminate(is); 483009ea47eSEdward Tomasz Napierala kthread_exit(); 484009ea47eSEdward Tomasz Napierala return; 485009ea47eSEdward Tomasz Napierala } 486009ea47eSEdward Tomasz Napierala 487009ea47eSEdward Tomasz Napierala iscsi_session_send_postponed(is); 488009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 489009ea47eSEdward Tomasz Napierala } 490009ea47eSEdward Tomasz Napierala } 491009ea47eSEdward Tomasz Napierala 492009ea47eSEdward Tomasz Napierala static void 493009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(struct iscsi_session *is) 494009ea47eSEdward Tomasz Napierala { 495009ea47eSEdward Tomasz Napierala 496009ea47eSEdward Tomasz Napierala /* 497009ea47eSEdward Tomasz Napierala * XXX: We can't use locking here, because 498009ea47eSEdward Tomasz Napierala * it's being called from various contexts. 499009ea47eSEdward Tomasz Napierala * Hope it doesn't break anything. 500009ea47eSEdward Tomasz Napierala */ 501009ea47eSEdward Tomasz Napierala if (is->is_reconnecting) 502009ea47eSEdward Tomasz Napierala return; 503009ea47eSEdward Tomasz Napierala 504009ea47eSEdward Tomasz Napierala is->is_reconnecting = true; 505009ea47eSEdward Tomasz Napierala cv_signal(&is->is_maintenance_cv); 506009ea47eSEdward Tomasz Napierala } 507009ea47eSEdward Tomasz Napierala 508009ea47eSEdward Tomasz Napierala static void 509009ea47eSEdward Tomasz Napierala iscsi_session_terminate(struct iscsi_session *is) 510009ea47eSEdward Tomasz Napierala { 511009ea47eSEdward Tomasz Napierala if (is->is_terminating) 512009ea47eSEdward Tomasz Napierala return; 513009ea47eSEdward Tomasz Napierala 514009ea47eSEdward Tomasz Napierala is->is_terminating = true; 515009ea47eSEdward Tomasz Napierala 516009ea47eSEdward Tomasz Napierala #if 0 517009ea47eSEdward Tomasz Napierala iscsi_session_logout(is); 518009ea47eSEdward Tomasz Napierala #endif 519009ea47eSEdward Tomasz Napierala cv_signal(&is->is_maintenance_cv); 520009ea47eSEdward Tomasz Napierala } 521009ea47eSEdward Tomasz Napierala 522009ea47eSEdward Tomasz Napierala static void 523009ea47eSEdward Tomasz Napierala iscsi_callout(void *context) 524009ea47eSEdward Tomasz Napierala { 525009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 526009ea47eSEdward Tomasz Napierala struct iscsi_bhs_nop_out *bhsno; 527009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 528009ea47eSEdward Tomasz Napierala bool reconnect_needed = false; 529009ea47eSEdward Tomasz Napierala 530009ea47eSEdward Tomasz Napierala is = context; 531009ea47eSEdward Tomasz Napierala 532009ea47eSEdward Tomasz Napierala if (is->is_terminating) 533009ea47eSEdward Tomasz Napierala return; 534009ea47eSEdward Tomasz Napierala 535009ea47eSEdward Tomasz Napierala callout_schedule(&is->is_callout, 1 * hz); 536009ea47eSEdward Tomasz Napierala 537009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 538009ea47eSEdward Tomasz Napierala is->is_timeout++; 539009ea47eSEdward Tomasz Napierala 540009ea47eSEdward Tomasz Napierala if (is->is_waiting_for_iscsid) { 5412c5b89e5SEdward Tomasz Napierala if (iscsid_timeout > 0 && is->is_timeout > iscsid_timeout) { 542009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "timed out waiting for iscsid(8) " 543009ea47eSEdward Tomasz Napierala "for %d seconds; reconnecting", 544009ea47eSEdward Tomasz Napierala is->is_timeout); 545009ea47eSEdward Tomasz Napierala reconnect_needed = true; 546009ea47eSEdward Tomasz Napierala } 547009ea47eSEdward Tomasz Napierala goto out; 548009ea47eSEdward Tomasz Napierala } 549009ea47eSEdward Tomasz Napierala 550009ea47eSEdward Tomasz Napierala if (is->is_login_phase) { 5512c5b89e5SEdward Tomasz Napierala if (login_timeout > 0 && is->is_timeout > login_timeout) { 552009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "login timed out after %d seconds; " 553009ea47eSEdward Tomasz Napierala "reconnecting", is->is_timeout); 554009ea47eSEdward Tomasz Napierala reconnect_needed = true; 555009ea47eSEdward Tomasz Napierala } 556009ea47eSEdward Tomasz Napierala goto out; 557009ea47eSEdward Tomasz Napierala } 558009ea47eSEdward Tomasz Napierala 5592c5b89e5SEdward Tomasz Napierala if (ping_timeout <= 0) { 5602c5b89e5SEdward Tomasz Napierala /* 5612c5b89e5SEdward Tomasz Napierala * Pings are disabled. Don't send NOP-Out in this case. 5622c5b89e5SEdward Tomasz Napierala * Reset the timeout, to avoid triggering reconnection, 5632c5b89e5SEdward Tomasz Napierala * should the user decide to reenable them. 5642c5b89e5SEdward Tomasz Napierala */ 5652c5b89e5SEdward Tomasz Napierala is->is_timeout = 0; 5662c5b89e5SEdward Tomasz Napierala goto out; 5672c5b89e5SEdward Tomasz Napierala } 5682c5b89e5SEdward Tomasz Napierala 569009ea47eSEdward Tomasz Napierala if (is->is_timeout >= ping_timeout) { 570009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "no ping reply (NOP-In) after %d seconds; " 571009ea47eSEdward Tomasz Napierala "reconnecting", ping_timeout); 572009ea47eSEdward Tomasz Napierala reconnect_needed = true; 573009ea47eSEdward Tomasz Napierala goto out; 574009ea47eSEdward Tomasz Napierala } 575009ea47eSEdward Tomasz Napierala 576009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 577009ea47eSEdward Tomasz Napierala 578009ea47eSEdward Tomasz Napierala /* 579009ea47eSEdward Tomasz Napierala * If the ping was reset less than one second ago - which means 580009ea47eSEdward Tomasz Napierala * that we've received some PDU during the last second - assume 581009ea47eSEdward Tomasz Napierala * the traffic flows correctly and don't bother sending a NOP-Out. 582009ea47eSEdward Tomasz Napierala * 583009ea47eSEdward Tomasz Napierala * (It's 2 - one for one second, and one for incrementing is_timeout 584009ea47eSEdward Tomasz Napierala * earlier in this routine.) 585009ea47eSEdward Tomasz Napierala */ 586009ea47eSEdward Tomasz Napierala if (is->is_timeout < 2) 587009ea47eSEdward Tomasz Napierala return; 588009ea47eSEdward Tomasz Napierala 58946aaea89SEdward Tomasz Napierala request = icl_pdu_new_bhs(is->is_conn, M_NOWAIT); 59046aaea89SEdward Tomasz Napierala if (request == NULL) { 59146aaea89SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate PDU"); 59246aaea89SEdward Tomasz Napierala return; 59346aaea89SEdward Tomasz Napierala } 594009ea47eSEdward Tomasz Napierala bhsno = (struct iscsi_bhs_nop_out *)request->ip_bhs; 595009ea47eSEdward Tomasz Napierala bhsno->bhsno_opcode = ISCSI_BHS_OPCODE_NOP_OUT | 596009ea47eSEdward Tomasz Napierala ISCSI_BHS_OPCODE_IMMEDIATE; 597009ea47eSEdward Tomasz Napierala bhsno->bhsno_flags = 0x80; 598009ea47eSEdward Tomasz Napierala bhsno->bhsno_target_transfer_tag = 0xffffffff; 599009ea47eSEdward Tomasz Napierala iscsi_pdu_queue(request); 600009ea47eSEdward Tomasz Napierala return; 601009ea47eSEdward Tomasz Napierala 602009ea47eSEdward Tomasz Napierala out: 603009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 604009ea47eSEdward Tomasz Napierala 605009ea47eSEdward Tomasz Napierala if (reconnect_needed) 606009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 607009ea47eSEdward Tomasz Napierala } 608009ea47eSEdward Tomasz Napierala 609009ea47eSEdward Tomasz Napierala static void 610009ea47eSEdward Tomasz Napierala iscsi_pdu_update_statsn(const struct icl_pdu *response) 611009ea47eSEdward Tomasz Napierala { 612009ea47eSEdward Tomasz Napierala const struct iscsi_bhs_data_in *bhsdi; 613009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 614009ea47eSEdward Tomasz Napierala uint32_t expcmdsn, maxcmdsn; 615009ea47eSEdward Tomasz Napierala 616009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 617009ea47eSEdward Tomasz Napierala 618009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 619009ea47eSEdward Tomasz Napierala 620009ea47eSEdward Tomasz Napierala /* 621009ea47eSEdward Tomasz Napierala * We're only using fields common for all the response 622009ea47eSEdward Tomasz Napierala * (target -> initiator) PDUs. 623009ea47eSEdward Tomasz Napierala */ 624009ea47eSEdward Tomasz Napierala bhsdi = (const struct iscsi_bhs_data_in *)response->ip_bhs; 625009ea47eSEdward Tomasz Napierala /* 626009ea47eSEdward Tomasz Napierala * Ok, I lied. In case of Data-In, "The fields StatSN, Status, 627009ea47eSEdward Tomasz Napierala * and Residual Count only have meaningful content if the S bit 628009ea47eSEdward Tomasz Napierala * is set to 1", so we also need to check the bit specific for 629009ea47eSEdward Tomasz Napierala * Data-In PDU. 630009ea47eSEdward Tomasz Napierala */ 631009ea47eSEdward Tomasz Napierala if (bhsdi->bhsdi_opcode != ISCSI_BHS_OPCODE_SCSI_DATA_IN || 632009ea47eSEdward Tomasz Napierala (bhsdi->bhsdi_flags & BHSDI_FLAGS_S) != 0) { 633009ea47eSEdward Tomasz Napierala if (ntohl(bhsdi->bhsdi_statsn) < is->is_statsn) { 634009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, 635009ea47eSEdward Tomasz Napierala "PDU StatSN %d >= session StatSN %d, opcode 0x%x", 636009ea47eSEdward Tomasz Napierala is->is_statsn, ntohl(bhsdi->bhsdi_statsn), 637009ea47eSEdward Tomasz Napierala bhsdi->bhsdi_opcode); 638009ea47eSEdward Tomasz Napierala } 639009ea47eSEdward Tomasz Napierala is->is_statsn = ntohl(bhsdi->bhsdi_statsn); 640009ea47eSEdward Tomasz Napierala } 641009ea47eSEdward Tomasz Napierala 642009ea47eSEdward Tomasz Napierala expcmdsn = ntohl(bhsdi->bhsdi_expcmdsn); 643009ea47eSEdward Tomasz Napierala maxcmdsn = ntohl(bhsdi->bhsdi_maxcmdsn); 644009ea47eSEdward Tomasz Napierala 645009ea47eSEdward Tomasz Napierala /* 646009ea47eSEdward Tomasz Napierala * XXX: Compare using Serial Arithmetic Sense. 647009ea47eSEdward Tomasz Napierala */ 648009ea47eSEdward Tomasz Napierala if (maxcmdsn + 1 < expcmdsn) { 649009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "PDU MaxCmdSN %d + 1 < PDU ExpCmdSN %d; ignoring", 650009ea47eSEdward Tomasz Napierala maxcmdsn, expcmdsn); 651009ea47eSEdward Tomasz Napierala } else { 652009ea47eSEdward Tomasz Napierala if (maxcmdsn > is->is_maxcmdsn) { 653009ea47eSEdward Tomasz Napierala is->is_maxcmdsn = maxcmdsn; 654009ea47eSEdward Tomasz Napierala 655009ea47eSEdward Tomasz Napierala /* 656009ea47eSEdward Tomasz Napierala * Command window increased; kick the maintanance thread 657009ea47eSEdward Tomasz Napierala * to send out postponed commands. 658009ea47eSEdward Tomasz Napierala */ 65916c158a5SEdward Tomasz Napierala if (!STAILQ_EMPTY(&is->is_postponed)) 660009ea47eSEdward Tomasz Napierala cv_signal(&is->is_maintenance_cv); 661009ea47eSEdward Tomasz Napierala } else if (maxcmdsn < is->is_maxcmdsn) { 662009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "PDU MaxCmdSN %d < session MaxCmdSN %d; ignoring", 663009ea47eSEdward Tomasz Napierala maxcmdsn, is->is_maxcmdsn); 664009ea47eSEdward Tomasz Napierala } 665009ea47eSEdward Tomasz Napierala 666009ea47eSEdward Tomasz Napierala if (expcmdsn > is->is_expcmdsn) { 667009ea47eSEdward Tomasz Napierala is->is_expcmdsn = expcmdsn; 668009ea47eSEdward Tomasz Napierala } else if (expcmdsn < is->is_expcmdsn) { 669009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "PDU ExpCmdSN %d < session ExpCmdSN %d; ignoring", 670009ea47eSEdward Tomasz Napierala expcmdsn, is->is_expcmdsn); 671009ea47eSEdward Tomasz Napierala } 672009ea47eSEdward Tomasz Napierala } 673009ea47eSEdward Tomasz Napierala 674009ea47eSEdward Tomasz Napierala /* 675009ea47eSEdward Tomasz Napierala * Every incoming PDU - not just NOP-In - resets the ping timer. 676009ea47eSEdward Tomasz Napierala * The purpose of the timeout is to reset the connection when it stalls; 677009ea47eSEdward Tomasz Napierala * we don't want this to happen when NOP-In or NOP-Out ends up delayed 678009ea47eSEdward Tomasz Napierala * in some queue. 679009ea47eSEdward Tomasz Napierala */ 680009ea47eSEdward Tomasz Napierala is->is_timeout = 0; 681009ea47eSEdward Tomasz Napierala } 682009ea47eSEdward Tomasz Napierala 683009ea47eSEdward Tomasz Napierala static void 684009ea47eSEdward Tomasz Napierala iscsi_receive_callback(struct icl_pdu *response) 685009ea47eSEdward Tomasz Napierala { 686009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 687009ea47eSEdward Tomasz Napierala 688009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 689009ea47eSEdward Tomasz Napierala 690009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 691009ea47eSEdward Tomasz Napierala 692009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 693009ea47eSEdward Tomasz Napierala if (is->is_login_phase) { 694009ea47eSEdward Tomasz Napierala if (is->is_login_pdu == NULL) 695009ea47eSEdward Tomasz Napierala is->is_login_pdu = response; 696009ea47eSEdward Tomasz Napierala else 697009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 698009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 699009ea47eSEdward Tomasz Napierala cv_signal(&is->is_login_cv); 700009ea47eSEdward Tomasz Napierala return; 701009ea47eSEdward Tomasz Napierala } 702009ea47eSEdward Tomasz Napierala #endif 703009ea47eSEdward Tomasz Napierala 704009ea47eSEdward Tomasz Napierala iscsi_pdu_update_statsn(response); 705009ea47eSEdward Tomasz Napierala 706009ea47eSEdward Tomasz Napierala /* 707009ea47eSEdward Tomasz Napierala * The handling routine is responsible for freeing the PDU 708009ea47eSEdward Tomasz Napierala * when it's no longer needed. 709009ea47eSEdward Tomasz Napierala */ 710009ea47eSEdward Tomasz Napierala switch (response->ip_bhs->bhs_opcode) { 711009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_NOP_IN: 712009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_nop_in(response); 713009ea47eSEdward Tomasz Napierala break; 714009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_SCSI_RESPONSE: 715009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_scsi_response(response); 716009ea47eSEdward Tomasz Napierala break; 717aa75114cSAlexander Motin case ISCSI_BHS_OPCODE_TASK_RESPONSE: 718aa75114cSAlexander Motin iscsi_pdu_handle_task_response(response); 719aa75114cSAlexander Motin break; 720009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_SCSI_DATA_IN: 721009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_data_in(response); 722009ea47eSEdward Tomasz Napierala break; 723009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_LOGOUT_RESPONSE: 724009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_logout_response(response); 725009ea47eSEdward Tomasz Napierala break; 726009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_R2T: 727009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_r2t(response); 728009ea47eSEdward Tomasz Napierala break; 729009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_ASYNC_MESSAGE: 730009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_async_message(response); 731009ea47eSEdward Tomasz Napierala break; 732009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_REJECT: 733009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_reject(response); 734009ea47eSEdward Tomasz Napierala break; 735009ea47eSEdward Tomasz Napierala default: 736009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "received PDU with unsupported " 737009ea47eSEdward Tomasz Napierala "opcode 0x%x; reconnecting", 738009ea47eSEdward Tomasz Napierala response->ip_bhs->bhs_opcode); 739009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 740009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 741009ea47eSEdward Tomasz Napierala } 742009ea47eSEdward Tomasz Napierala 743009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 744009ea47eSEdward Tomasz Napierala } 745009ea47eSEdward Tomasz Napierala 746009ea47eSEdward Tomasz Napierala static void 747009ea47eSEdward Tomasz Napierala iscsi_error_callback(struct icl_conn *ic) 748009ea47eSEdward Tomasz Napierala { 749009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 750009ea47eSEdward Tomasz Napierala 751009ea47eSEdward Tomasz Napierala is = CONN_SESSION(ic); 752009ea47eSEdward Tomasz Napierala 753009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "connection error; reconnecting"); 754009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 755009ea47eSEdward Tomasz Napierala } 756009ea47eSEdward Tomasz Napierala 757009ea47eSEdward Tomasz Napierala static void 758009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_nop_in(struct icl_pdu *response) 759009ea47eSEdward Tomasz Napierala { 7601008ac5eSEdward Tomasz Napierala struct iscsi_session *is; 761009ea47eSEdward Tomasz Napierala struct iscsi_bhs_nop_out *bhsno; 762009ea47eSEdward Tomasz Napierala struct iscsi_bhs_nop_in *bhsni; 763009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 7641008ac5eSEdward Tomasz Napierala void *data = NULL; 7651008ac5eSEdward Tomasz Napierala size_t datasize; 7661008ac5eSEdward Tomasz Napierala int error; 767009ea47eSEdward Tomasz Napierala 7681008ac5eSEdward Tomasz Napierala is = PDU_SESSION(response); 769009ea47eSEdward Tomasz Napierala bhsni = (struct iscsi_bhs_nop_in *)response->ip_bhs; 770009ea47eSEdward Tomasz Napierala 771009ea47eSEdward Tomasz Napierala if (bhsni->bhsni_target_transfer_tag == 0xffffffff) { 772009ea47eSEdward Tomasz Napierala /* 773009ea47eSEdward Tomasz Napierala * Nothing to do; iscsi_pdu_update_statsn() already 774009ea47eSEdward Tomasz Napierala * zeroed the timeout. 775009ea47eSEdward Tomasz Napierala */ 776009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 777009ea47eSEdward Tomasz Napierala return; 778009ea47eSEdward Tomasz Napierala } 779009ea47eSEdward Tomasz Napierala 7801008ac5eSEdward Tomasz Napierala datasize = icl_pdu_data_segment_length(response); 7811008ac5eSEdward Tomasz Napierala if (datasize > 0) { 7821008ac5eSEdward Tomasz Napierala data = malloc(datasize, M_ISCSI, M_NOWAIT | M_ZERO); 7831008ac5eSEdward Tomasz Napierala if (data == NULL) { 7841008ac5eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate memory; " 7851008ac5eSEdward Tomasz Napierala "reconnecting"); 7861008ac5eSEdward Tomasz Napierala icl_pdu_free(response); 7871008ac5eSEdward Tomasz Napierala iscsi_session_reconnect(is); 7881008ac5eSEdward Tomasz Napierala return; 7891008ac5eSEdward Tomasz Napierala } 7901008ac5eSEdward Tomasz Napierala icl_pdu_get_data(response, 0, data, datasize); 7911008ac5eSEdward Tomasz Napierala } 7921008ac5eSEdward Tomasz Napierala 793009ea47eSEdward Tomasz Napierala request = icl_pdu_new_bhs(response->ip_conn, M_NOWAIT); 794009ea47eSEdward Tomasz Napierala if (request == NULL) { 7951008ac5eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate memory; " 7961008ac5eSEdward Tomasz Napierala "reconnecting"); 7971008ac5eSEdward Tomasz Napierala free(data, M_ISCSI); 798009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 7991008ac5eSEdward Tomasz Napierala iscsi_session_reconnect(is); 800009ea47eSEdward Tomasz Napierala return; 801009ea47eSEdward Tomasz Napierala } 802009ea47eSEdward Tomasz Napierala bhsno = (struct iscsi_bhs_nop_out *)request->ip_bhs; 803009ea47eSEdward Tomasz Napierala bhsno->bhsno_opcode = ISCSI_BHS_OPCODE_NOP_OUT | 804009ea47eSEdward Tomasz Napierala ISCSI_BHS_OPCODE_IMMEDIATE; 805009ea47eSEdward Tomasz Napierala bhsno->bhsno_flags = 0x80; 8061008ac5eSEdward Tomasz Napierala bhsno->bhsno_initiator_task_tag = 0xffffffff; 807009ea47eSEdward Tomasz Napierala bhsno->bhsno_target_transfer_tag = bhsni->bhsni_target_transfer_tag; 8081008ac5eSEdward Tomasz Napierala if (datasize > 0) { 8091008ac5eSEdward Tomasz Napierala error = icl_pdu_append_data(request, data, datasize, M_NOWAIT); 8101008ac5eSEdward Tomasz Napierala if (error != 0) { 8111008ac5eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate memory; " 8121008ac5eSEdward Tomasz Napierala "reconnecting"); 8131008ac5eSEdward Tomasz Napierala free(data, M_ISCSI); 8141008ac5eSEdward Tomasz Napierala icl_pdu_free(request); 8151008ac5eSEdward Tomasz Napierala icl_pdu_free(response); 8161008ac5eSEdward Tomasz Napierala iscsi_session_reconnect(is); 8171008ac5eSEdward Tomasz Napierala return; 8181008ac5eSEdward Tomasz Napierala } 8191008ac5eSEdward Tomasz Napierala free(data, M_ISCSI); 8201008ac5eSEdward Tomasz Napierala } 821009ea47eSEdward Tomasz Napierala 822009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 823009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(request); 824009ea47eSEdward Tomasz Napierala } 825009ea47eSEdward Tomasz Napierala 826009ea47eSEdward Tomasz Napierala static void 827009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_scsi_response(struct icl_pdu *response) 828009ea47eSEdward Tomasz Napierala { 829009ea47eSEdward Tomasz Napierala struct iscsi_bhs_scsi_response *bhssr; 830009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io; 831009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 832009ea47eSEdward Tomasz Napierala struct ccb_scsiio *csio; 833009ea47eSEdward Tomasz Napierala size_t data_segment_len; 834009ea47eSEdward Tomasz Napierala uint16_t sense_len; 835009ea47eSEdward Tomasz Napierala 836009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 837009ea47eSEdward Tomasz Napierala 838009ea47eSEdward Tomasz Napierala bhssr = (struct iscsi_bhs_scsi_response *)response->ip_bhs; 839009ea47eSEdward Tomasz Napierala io = iscsi_outstanding_find(is, bhssr->bhssr_initiator_task_tag); 840aa75114cSAlexander Motin if (io == NULL || io->io_ccb == NULL) { 841009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "bad itt 0x%x", bhssr->bhssr_initiator_task_tag); 842009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 843009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 844009ea47eSEdward Tomasz Napierala return; 845009ea47eSEdward Tomasz Napierala } 846009ea47eSEdward Tomasz Napierala 847009ea47eSEdward Tomasz Napierala if (bhssr->bhssr_response != BHSSR_RESPONSE_COMMAND_COMPLETED) { 848009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "service response 0x%x", bhssr->bhssr_response); 849009ea47eSEdward Tomasz Napierala if ((io->io_ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 850009ea47eSEdward Tomasz Napierala xpt_freeze_devq(io->io_ccb->ccb_h.path, 1); 851009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 852009ea47eSEdward Tomasz Napierala } 853009ea47eSEdward Tomasz Napierala io->io_ccb->ccb_h.status = CAM_REQ_CMP_ERR | CAM_DEV_QFRZN; 854009ea47eSEdward Tomasz Napierala } else if (bhssr->bhssr_status == 0) { 855009ea47eSEdward Tomasz Napierala io->io_ccb->ccb_h.status = CAM_REQ_CMP; 856009ea47eSEdward Tomasz Napierala } else { 857009ea47eSEdward Tomasz Napierala if ((io->io_ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 858009ea47eSEdward Tomasz Napierala xpt_freeze_devq(io->io_ccb->ccb_h.path, 1); 859009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 860009ea47eSEdward Tomasz Napierala } 861009ea47eSEdward Tomasz Napierala io->io_ccb->ccb_h.status = CAM_SCSI_STATUS_ERROR | CAM_DEV_QFRZN; 862009ea47eSEdward Tomasz Napierala io->io_ccb->csio.scsi_status = bhssr->bhssr_status; 863009ea47eSEdward Tomasz Napierala } 864009ea47eSEdward Tomasz Napierala 865009ea47eSEdward Tomasz Napierala if (bhssr->bhssr_flags & BHSSR_FLAGS_RESIDUAL_OVERFLOW) { 866009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target indicated residual overflow"); 867009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 868009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 869009ea47eSEdward Tomasz Napierala return; 870009ea47eSEdward Tomasz Napierala } 871009ea47eSEdward Tomasz Napierala 872009ea47eSEdward Tomasz Napierala csio = &io->io_ccb->csio; 873009ea47eSEdward Tomasz Napierala 874009ea47eSEdward Tomasz Napierala data_segment_len = icl_pdu_data_segment_length(response); 875009ea47eSEdward Tomasz Napierala if (data_segment_len > 0) { 876009ea47eSEdward Tomasz Napierala if (data_segment_len < sizeof(sense_len)) { 877009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "truncated data segment (%zd bytes)", 878009ea47eSEdward Tomasz Napierala data_segment_len); 879009ea47eSEdward Tomasz Napierala if ((io->io_ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 880009ea47eSEdward Tomasz Napierala xpt_freeze_devq(io->io_ccb->ccb_h.path, 1); 881009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 882009ea47eSEdward Tomasz Napierala } 883009ea47eSEdward Tomasz Napierala io->io_ccb->ccb_h.status = CAM_REQ_CMP_ERR | CAM_DEV_QFRZN; 884009ea47eSEdward Tomasz Napierala goto out; 885009ea47eSEdward Tomasz Napierala } 886009ea47eSEdward Tomasz Napierala icl_pdu_get_data(response, 0, &sense_len, sizeof(sense_len)); 887009ea47eSEdward Tomasz Napierala sense_len = ntohs(sense_len); 888009ea47eSEdward Tomasz Napierala #if 0 889009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "sense_len %d, data len %zd", 890009ea47eSEdward Tomasz Napierala sense_len, data_segment_len); 891009ea47eSEdward Tomasz Napierala #endif 892009ea47eSEdward Tomasz Napierala if (sizeof(sense_len) + sense_len > data_segment_len) { 893009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "truncated data segment " 894009ea47eSEdward Tomasz Napierala "(%zd bytes, should be %zd)", 895009ea47eSEdward Tomasz Napierala data_segment_len, sizeof(sense_len) + sense_len); 896009ea47eSEdward Tomasz Napierala if ((io->io_ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 897009ea47eSEdward Tomasz Napierala xpt_freeze_devq(io->io_ccb->ccb_h.path, 1); 898009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 899009ea47eSEdward Tomasz Napierala } 900009ea47eSEdward Tomasz Napierala io->io_ccb->ccb_h.status = CAM_REQ_CMP_ERR | CAM_DEV_QFRZN; 901009ea47eSEdward Tomasz Napierala goto out; 902009ea47eSEdward Tomasz Napierala } else if (sizeof(sense_len) + sense_len < data_segment_len) 903009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "oversize data segment " 904009ea47eSEdward Tomasz Napierala "(%zd bytes, should be %zd)", 905009ea47eSEdward Tomasz Napierala data_segment_len, sizeof(sense_len) + sense_len); 906009ea47eSEdward Tomasz Napierala if (sense_len > csio->sense_len) { 907009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "truncating sense from %d to %d", 908009ea47eSEdward Tomasz Napierala sense_len, csio->sense_len); 909009ea47eSEdward Tomasz Napierala sense_len = csio->sense_len; 910009ea47eSEdward Tomasz Napierala } 911009ea47eSEdward Tomasz Napierala icl_pdu_get_data(response, sizeof(sense_len), &csio->sense_data, sense_len); 912009ea47eSEdward Tomasz Napierala csio->sense_resid = csio->sense_len - sense_len; 913009ea47eSEdward Tomasz Napierala io->io_ccb->ccb_h.status |= CAM_AUTOSNS_VALID; 914009ea47eSEdward Tomasz Napierala } 915009ea47eSEdward Tomasz Napierala 916009ea47eSEdward Tomasz Napierala out: 917009ea47eSEdward Tomasz Napierala if (bhssr->bhssr_flags & BHSSR_FLAGS_RESIDUAL_UNDERFLOW) 918009ea47eSEdward Tomasz Napierala csio->resid = ntohl(bhssr->bhssr_residual_count); 919009ea47eSEdward Tomasz Napierala 920009ea47eSEdward Tomasz Napierala if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) { 921009ea47eSEdward Tomasz Napierala KASSERT(io->io_received <= csio->dxfer_len, 922009ea47eSEdward Tomasz Napierala ("io->io_received > csio->dxfer_len")); 923009ea47eSEdward Tomasz Napierala if (io->io_received < csio->dxfer_len) { 924009ea47eSEdward Tomasz Napierala if (csio->resid != csio->dxfer_len - io->io_received) { 925009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "underflow mismatch: " 926009ea47eSEdward Tomasz Napierala "target indicates %d, we calculated %zd", 927009ea47eSEdward Tomasz Napierala csio->resid, 928009ea47eSEdward Tomasz Napierala csio->dxfer_len - io->io_received); 929009ea47eSEdward Tomasz Napierala } 930009ea47eSEdward Tomasz Napierala csio->resid = csio->dxfer_len - io->io_received; 931009ea47eSEdward Tomasz Napierala } 932009ea47eSEdward Tomasz Napierala } 933009ea47eSEdward Tomasz Napierala 934009ea47eSEdward Tomasz Napierala xpt_done(io->io_ccb); 935009ea47eSEdward Tomasz Napierala iscsi_outstanding_remove(is, io); 936009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 937009ea47eSEdward Tomasz Napierala } 938009ea47eSEdward Tomasz Napierala 939009ea47eSEdward Tomasz Napierala static void 940aa75114cSAlexander Motin iscsi_pdu_handle_task_response(struct icl_pdu *response) 941aa75114cSAlexander Motin { 942aa75114cSAlexander Motin struct iscsi_bhs_task_management_response *bhstmr; 943aa75114cSAlexander Motin struct iscsi_outstanding *io, *aio; 944aa75114cSAlexander Motin struct iscsi_session *is; 945aa75114cSAlexander Motin 946aa75114cSAlexander Motin is = PDU_SESSION(response); 947aa75114cSAlexander Motin 948aa75114cSAlexander Motin bhstmr = (struct iscsi_bhs_task_management_response *)response->ip_bhs; 949aa75114cSAlexander Motin io = iscsi_outstanding_find(is, bhstmr->bhstmr_initiator_task_tag); 950aa75114cSAlexander Motin if (io == NULL || io->io_ccb != NULL) { 951aa75114cSAlexander Motin ISCSI_SESSION_WARN(is, "bad itt 0x%x", 952aa75114cSAlexander Motin bhstmr->bhstmr_initiator_task_tag); 953aa75114cSAlexander Motin icl_pdu_free(response); 954aa75114cSAlexander Motin iscsi_session_reconnect(is); 955aa75114cSAlexander Motin return; 956aa75114cSAlexander Motin } 957aa75114cSAlexander Motin 958aa75114cSAlexander Motin if (bhstmr->bhstmr_response != BHSTMR_RESPONSE_FUNCTION_COMPLETE) { 959aa75114cSAlexander Motin ISCSI_SESSION_WARN(is, "task response 0x%x", 960aa75114cSAlexander Motin bhstmr->bhstmr_response); 961aa75114cSAlexander Motin } else { 962aa75114cSAlexander Motin aio = iscsi_outstanding_find(is, io->io_datasn); 963aa75114cSAlexander Motin if (aio != NULL && aio->io_ccb != NULL) 964aa75114cSAlexander Motin iscsi_session_terminate_task(is, aio, false); 965aa75114cSAlexander Motin } 966aa75114cSAlexander Motin 967aa75114cSAlexander Motin iscsi_outstanding_remove(is, io); 968aa75114cSAlexander Motin icl_pdu_free(response); 969aa75114cSAlexander Motin } 970aa75114cSAlexander Motin 971aa75114cSAlexander Motin static void 972009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_data_in(struct icl_pdu *response) 973009ea47eSEdward Tomasz Napierala { 974009ea47eSEdward Tomasz Napierala struct iscsi_bhs_data_in *bhsdi; 975009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io; 976009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 977009ea47eSEdward Tomasz Napierala struct ccb_scsiio *csio; 978009ea47eSEdward Tomasz Napierala size_t data_segment_len; 979009ea47eSEdward Tomasz Napierala 980009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 981009ea47eSEdward Tomasz Napierala bhsdi = (struct iscsi_bhs_data_in *)response->ip_bhs; 982009ea47eSEdward Tomasz Napierala io = iscsi_outstanding_find(is, bhsdi->bhsdi_initiator_task_tag); 983aa75114cSAlexander Motin if (io == NULL || io->io_ccb == NULL) { 984009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "bad itt 0x%x", bhsdi->bhsdi_initiator_task_tag); 985009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 986009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 987009ea47eSEdward Tomasz Napierala return; 988009ea47eSEdward Tomasz Napierala } 989009ea47eSEdward Tomasz Napierala 990009ea47eSEdward Tomasz Napierala data_segment_len = icl_pdu_data_segment_length(response); 991009ea47eSEdward Tomasz Napierala if (data_segment_len == 0) { 992009ea47eSEdward Tomasz Napierala /* 993009ea47eSEdward Tomasz Napierala * "The sending of 0 length data segments should be avoided, 994009ea47eSEdward Tomasz Napierala * but initiators and targets MUST be able to properly receive 995009ea47eSEdward Tomasz Napierala * 0 length data segments." 996009ea47eSEdward Tomasz Napierala */ 997009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 998009ea47eSEdward Tomasz Napierala return; 999009ea47eSEdward Tomasz Napierala } 1000009ea47eSEdward Tomasz Napierala 1001009ea47eSEdward Tomasz Napierala /* 1002009ea47eSEdward Tomasz Napierala * We need to track this for security reasons - without it, malicious target 1003009ea47eSEdward Tomasz Napierala * could respond to SCSI READ without sending Data-In PDUs, which would result 1004009ea47eSEdward Tomasz Napierala * in read operation on the initiator side returning random kernel data. 1005009ea47eSEdward Tomasz Napierala */ 1006009ea47eSEdward Tomasz Napierala if (ntohl(bhsdi->bhsdi_buffer_offset) != io->io_received) { 1007009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "data out of order; expected offset %zd, got %zd", 1008009ea47eSEdward Tomasz Napierala io->io_received, (size_t)ntohl(bhsdi->bhsdi_buffer_offset)); 1009009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1010009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1011009ea47eSEdward Tomasz Napierala return; 1012009ea47eSEdward Tomasz Napierala } 1013009ea47eSEdward Tomasz Napierala 1014009ea47eSEdward Tomasz Napierala csio = &io->io_ccb->csio; 1015009ea47eSEdward Tomasz Napierala 1016d43c9ec1SEdward Tomasz Napierala if (io->io_received + data_segment_len > csio->dxfer_len) { 1017009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "oversize data segment (%zd bytes " 1018d43c9ec1SEdward Tomasz Napierala "at offset %zd, buffer is %d)", 1019d43c9ec1SEdward Tomasz Napierala data_segment_len, io->io_received, csio->dxfer_len); 1020009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1021009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1022009ea47eSEdward Tomasz Napierala return; 1023009ea47eSEdward Tomasz Napierala } 1024009ea47eSEdward Tomasz Napierala 1025d43c9ec1SEdward Tomasz Napierala icl_pdu_get_data(response, 0, csio->data_ptr + io->io_received, data_segment_len); 1026009ea47eSEdward Tomasz Napierala io->io_received += data_segment_len; 1027009ea47eSEdward Tomasz Napierala 1028009ea47eSEdward Tomasz Napierala /* 1029009ea47eSEdward Tomasz Napierala * XXX: Check DataSN. 1030009ea47eSEdward Tomasz Napierala * XXX: Check F. 1031009ea47eSEdward Tomasz Napierala */ 103269647b7bSEdward Tomasz Napierala if ((bhsdi->bhsdi_flags & BHSDI_FLAGS_S) == 0) { 103369647b7bSEdward Tomasz Napierala /* 103469647b7bSEdward Tomasz Napierala * Nothing more to do. 103569647b7bSEdward Tomasz Napierala */ 103669647b7bSEdward Tomasz Napierala icl_pdu_free(response); 103769647b7bSEdward Tomasz Napierala return; 103869647b7bSEdward Tomasz Napierala } 103969647b7bSEdward Tomasz Napierala 1040009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "got S flag; status 0x%x", bhsdi->bhsdi_status); 1041009ea47eSEdward Tomasz Napierala if (bhsdi->bhsdi_status == 0) { 1042009ea47eSEdward Tomasz Napierala io->io_ccb->ccb_h.status = CAM_REQ_CMP; 1043009ea47eSEdward Tomasz Napierala } else { 1044009ea47eSEdward Tomasz Napierala if ((io->io_ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 1045009ea47eSEdward Tomasz Napierala xpt_freeze_devq(io->io_ccb->ccb_h.path, 1); 1046009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 1047009ea47eSEdward Tomasz Napierala } 1048009ea47eSEdward Tomasz Napierala io->io_ccb->ccb_h.status = CAM_SCSI_STATUS_ERROR | CAM_DEV_QFRZN; 1049009ea47eSEdward Tomasz Napierala csio->scsi_status = bhsdi->bhsdi_status; 1050009ea47eSEdward Tomasz Napierala } 105169647b7bSEdward Tomasz Napierala 105269647b7bSEdward Tomasz Napierala if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) { 105369647b7bSEdward Tomasz Napierala KASSERT(io->io_received <= csio->dxfer_len, 105469647b7bSEdward Tomasz Napierala ("io->io_received > csio->dxfer_len")); 105569647b7bSEdward Tomasz Napierala if (io->io_received < csio->dxfer_len) { 105669647b7bSEdward Tomasz Napierala csio->resid = ntohl(bhsdi->bhsdi_residual_count); 105769647b7bSEdward Tomasz Napierala if (csio->resid != csio->dxfer_len - io->io_received) { 105869647b7bSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "underflow mismatch: " 105969647b7bSEdward Tomasz Napierala "target indicates %d, we calculated %zd", 106069647b7bSEdward Tomasz Napierala csio->resid, 106169647b7bSEdward Tomasz Napierala csio->dxfer_len - io->io_received); 106269647b7bSEdward Tomasz Napierala } 106369647b7bSEdward Tomasz Napierala csio->resid = csio->dxfer_len - io->io_received; 106469647b7bSEdward Tomasz Napierala } 1065009ea47eSEdward Tomasz Napierala } 1066009ea47eSEdward Tomasz Napierala 106769647b7bSEdward Tomasz Napierala xpt_done(io->io_ccb); 106869647b7bSEdward Tomasz Napierala iscsi_outstanding_remove(is, io); 1069009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1070009ea47eSEdward Tomasz Napierala } 1071009ea47eSEdward Tomasz Napierala 1072009ea47eSEdward Tomasz Napierala static void 1073009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_logout_response(struct icl_pdu *response) 1074009ea47eSEdward Tomasz Napierala { 1075009ea47eSEdward Tomasz Napierala 1076009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(PDU_SESSION(response), "logout response"); 1077009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1078009ea47eSEdward Tomasz Napierala } 1079009ea47eSEdward Tomasz Napierala 1080009ea47eSEdward Tomasz Napierala static void 1081009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_r2t(struct icl_pdu *response) 1082009ea47eSEdward Tomasz Napierala { 1083009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 1084009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1085009ea47eSEdward Tomasz Napierala struct iscsi_bhs_r2t *bhsr2t; 1086009ea47eSEdward Tomasz Napierala struct iscsi_bhs_data_out *bhsdo; 1087009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io; 1088009ea47eSEdward Tomasz Napierala struct ccb_scsiio *csio; 1089009ea47eSEdward Tomasz Napierala size_t off, len, total_len; 1090009ea47eSEdward Tomasz Napierala int error; 1091009ea47eSEdward Tomasz Napierala 1092009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 1093009ea47eSEdward Tomasz Napierala 1094009ea47eSEdward Tomasz Napierala bhsr2t = (struct iscsi_bhs_r2t *)response->ip_bhs; 1095009ea47eSEdward Tomasz Napierala io = iscsi_outstanding_find(is, bhsr2t->bhsr2t_initiator_task_tag); 1096aa75114cSAlexander Motin if (io == NULL || io->io_ccb == NULL) { 1097009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "bad itt 0x%x; reconnecting", 1098009ea47eSEdward Tomasz Napierala bhsr2t->bhsr2t_initiator_task_tag); 1099009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1100009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1101009ea47eSEdward Tomasz Napierala return; 1102009ea47eSEdward Tomasz Napierala } 1103009ea47eSEdward Tomasz Napierala 1104009ea47eSEdward Tomasz Napierala csio = &io->io_ccb->csio; 1105009ea47eSEdward Tomasz Napierala 1106009ea47eSEdward Tomasz Napierala if ((csio->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_OUT) { 1107009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "received R2T for read command; reconnecting"); 1108009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1109009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1110009ea47eSEdward Tomasz Napierala return; 1111009ea47eSEdward Tomasz Napierala } 1112009ea47eSEdward Tomasz Napierala 1113009ea47eSEdward Tomasz Napierala /* 1114009ea47eSEdward Tomasz Napierala * XXX: Verify R2TSN. 1115009ea47eSEdward Tomasz Napierala */ 1116009ea47eSEdward Tomasz Napierala 1117009ea47eSEdward Tomasz Napierala io->io_datasn = 0; 1118d43c9ec1SEdward Tomasz Napierala 1119009ea47eSEdward Tomasz Napierala off = ntohl(bhsr2t->bhsr2t_buffer_offset); 1120d43c9ec1SEdward Tomasz Napierala if (off > csio->dxfer_len) { 1121d43c9ec1SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target requested invalid offset " 1122d43c9ec1SEdward Tomasz Napierala "%zd, buffer is is %d; reconnecting", off, csio->dxfer_len); 1123d43c9ec1SEdward Tomasz Napierala icl_pdu_free(response); 1124d43c9ec1SEdward Tomasz Napierala iscsi_session_reconnect(is); 1125d43c9ec1SEdward Tomasz Napierala return; 1126d43c9ec1SEdward Tomasz Napierala } 1127d43c9ec1SEdward Tomasz Napierala 1128009ea47eSEdward Tomasz Napierala total_len = ntohl(bhsr2t->bhsr2t_desired_data_transfer_length); 1129d43c9ec1SEdward Tomasz Napierala if (total_len == 0 || total_len > csio->dxfer_len) { 1130d43c9ec1SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target requested invalid length " 1131d43c9ec1SEdward Tomasz Napierala "%zd, buffer is %d; reconnecting", total_len, csio->dxfer_len); 1132d43c9ec1SEdward Tomasz Napierala icl_pdu_free(response); 1133d43c9ec1SEdward Tomasz Napierala iscsi_session_reconnect(is); 1134d43c9ec1SEdward Tomasz Napierala return; 1135d43c9ec1SEdward Tomasz Napierala } 1136009ea47eSEdward Tomasz Napierala 1137009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "r2t; off %zd, len %zd", off, total_len); 1138009ea47eSEdward Tomasz Napierala 1139009ea47eSEdward Tomasz Napierala for (;;) { 1140009ea47eSEdward Tomasz Napierala len = total_len; 1141009ea47eSEdward Tomasz Napierala 1142009ea47eSEdward Tomasz Napierala if (len > is->is_max_data_segment_length) 1143009ea47eSEdward Tomasz Napierala len = is->is_max_data_segment_length; 1144009ea47eSEdward Tomasz Napierala 1145009ea47eSEdward Tomasz Napierala if (off + len > csio->dxfer_len) { 1146d43c9ec1SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target requested invalid " 1147d43c9ec1SEdward Tomasz Napierala "length/offset %zd, buffer is %d; reconnecting", 1148009ea47eSEdward Tomasz Napierala off + len, csio->dxfer_len); 1149009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1150009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1151009ea47eSEdward Tomasz Napierala return; 1152009ea47eSEdward Tomasz Napierala } 1153009ea47eSEdward Tomasz Napierala 1154009ea47eSEdward Tomasz Napierala request = icl_pdu_new_bhs(response->ip_conn, M_NOWAIT); 1155009ea47eSEdward Tomasz Napierala if (request == NULL) { 1156009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1157009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1158009ea47eSEdward Tomasz Napierala return; 1159009ea47eSEdward Tomasz Napierala } 1160009ea47eSEdward Tomasz Napierala 1161009ea47eSEdward Tomasz Napierala bhsdo = (struct iscsi_bhs_data_out *)request->ip_bhs; 1162009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_opcode = ISCSI_BHS_OPCODE_SCSI_DATA_OUT; 1163009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_lun = bhsr2t->bhsr2t_lun; 1164009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_initiator_task_tag = 1165009ea47eSEdward Tomasz Napierala bhsr2t->bhsr2t_initiator_task_tag; 1166009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_target_transfer_tag = 1167009ea47eSEdward Tomasz Napierala bhsr2t->bhsr2t_target_transfer_tag; 1168009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_datasn = htonl(io->io_datasn++); 1169009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_buffer_offset = htonl(off); 1170d43c9ec1SEdward Tomasz Napierala error = icl_pdu_append_data(request, csio->data_ptr + off, len, 1171d43c9ec1SEdward Tomasz Napierala M_NOWAIT); 1172009ea47eSEdward Tomasz Napierala if (error != 0) { 1173d43c9ec1SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate memory; " 1174d43c9ec1SEdward Tomasz Napierala "reconnecting"); 1175009ea47eSEdward Tomasz Napierala icl_pdu_free(request); 1176009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1177009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1178009ea47eSEdward Tomasz Napierala return; 1179009ea47eSEdward Tomasz Napierala } 1180009ea47eSEdward Tomasz Napierala 1181009ea47eSEdward Tomasz Napierala off += len; 1182009ea47eSEdward Tomasz Napierala total_len -= len; 1183009ea47eSEdward Tomasz Napierala 1184009ea47eSEdward Tomasz Napierala if (total_len == 0) { 1185009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_flags |= BHSDO_FLAGS_F; 1186009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "setting F, off %zd", off); 1187009ea47eSEdward Tomasz Napierala } else { 1188009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "not finished, off %zd", off); 1189009ea47eSEdward Tomasz Napierala } 1190009ea47eSEdward Tomasz Napierala 1191009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(request); 1192009ea47eSEdward Tomasz Napierala 1193009ea47eSEdward Tomasz Napierala if (total_len == 0) 1194009ea47eSEdward Tomasz Napierala break; 1195009ea47eSEdward Tomasz Napierala } 1196009ea47eSEdward Tomasz Napierala 1197009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1198009ea47eSEdward Tomasz Napierala } 1199009ea47eSEdward Tomasz Napierala 1200009ea47eSEdward Tomasz Napierala static void 1201009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_async_message(struct icl_pdu *response) 1202009ea47eSEdward Tomasz Napierala { 1203009ea47eSEdward Tomasz Napierala struct iscsi_bhs_asynchronous_message *bhsam; 1204009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1205009ea47eSEdward Tomasz Napierala 1206009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 1207009ea47eSEdward Tomasz Napierala bhsam = (struct iscsi_bhs_asynchronous_message *)response->ip_bhs; 1208009ea47eSEdward Tomasz Napierala switch (bhsam->bhsam_async_event) { 1209009ea47eSEdward Tomasz Napierala case BHSAM_EVENT_TARGET_REQUESTS_LOGOUT: 1210009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target requests logout; removing session"); 1211009ea47eSEdward Tomasz Napierala iscsi_session_logout(is); 1212009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1213009ea47eSEdward Tomasz Napierala break; 1214009ea47eSEdward Tomasz Napierala case BHSAM_EVENT_TARGET_TERMINATES_CONNECTION: 1215009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target indicates it will drop drop the connection"); 1216009ea47eSEdward Tomasz Napierala break; 1217009ea47eSEdward Tomasz Napierala case BHSAM_EVENT_TARGET_TERMINATES_SESSION: 1218009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target indicates it will drop drop the session"); 1219009ea47eSEdward Tomasz Napierala break; 1220009ea47eSEdward Tomasz Napierala default: 1221009ea47eSEdward Tomasz Napierala /* 1222009ea47eSEdward Tomasz Napierala * XXX: Technically, we're obligated to also handle 1223009ea47eSEdward Tomasz Napierala * parameter renegotiation. 1224009ea47eSEdward Tomasz Napierala */ 1225009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "ignoring AsyncEvent %d", bhsam->bhsam_async_event); 1226009ea47eSEdward Tomasz Napierala break; 1227009ea47eSEdward Tomasz Napierala } 1228009ea47eSEdward Tomasz Napierala 1229009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1230009ea47eSEdward Tomasz Napierala } 1231009ea47eSEdward Tomasz Napierala 1232009ea47eSEdward Tomasz Napierala static void 1233009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_reject(struct icl_pdu *response) 1234009ea47eSEdward Tomasz Napierala { 1235009ea47eSEdward Tomasz Napierala struct iscsi_bhs_reject *bhsr; 1236009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1237009ea47eSEdward Tomasz Napierala 1238009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 1239009ea47eSEdward Tomasz Napierala bhsr = (struct iscsi_bhs_reject *)response->ip_bhs; 1240009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "received Reject PDU, reason 0x%x; protocol error?", 1241009ea47eSEdward Tomasz Napierala bhsr->bhsr_reason); 1242009ea47eSEdward Tomasz Napierala 1243009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1244009ea47eSEdward Tomasz Napierala } 1245009ea47eSEdward Tomasz Napierala 1246009ea47eSEdward Tomasz Napierala static int 1247009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_wait(struct iscsi_softc *sc, 1248009ea47eSEdward Tomasz Napierala struct iscsi_daemon_request *request) 1249009ea47eSEdward Tomasz Napierala { 1250009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1251009ea47eSEdward Tomasz Napierala int error; 1252009ea47eSEdward Tomasz Napierala 1253009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1254009ea47eSEdward Tomasz Napierala for (;;) { 1255009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 12562be596adSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1257009ea47eSEdward Tomasz Napierala if (is->is_waiting_for_iscsid) 1258009ea47eSEdward Tomasz Napierala break; 12592be596adSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1260009ea47eSEdward Tomasz Napierala } 1261009ea47eSEdward Tomasz Napierala 1262009ea47eSEdward Tomasz Napierala if (is == NULL) { 1263009ea47eSEdward Tomasz Napierala /* 1264009ea47eSEdward Tomasz Napierala * No session requires attention from iscsid(8); wait. 1265009ea47eSEdward Tomasz Napierala */ 1266009ea47eSEdward Tomasz Napierala error = cv_wait_sig(&sc->sc_cv, &sc->sc_lock); 1267009ea47eSEdward Tomasz Napierala if (error != 0) { 1268009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1269009ea47eSEdward Tomasz Napierala return (error); 1270009ea47eSEdward Tomasz Napierala } 1271009ea47eSEdward Tomasz Napierala continue; 1272009ea47eSEdward Tomasz Napierala } 1273009ea47eSEdward Tomasz Napierala 1274009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = false; 1275009ea47eSEdward Tomasz Napierala is->is_login_phase = true; 1276009ea47eSEdward Tomasz Napierala is->is_reason[0] = '\0'; 1277009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1278009ea47eSEdward Tomasz Napierala 1279009ea47eSEdward Tomasz Napierala request->idr_session_id = is->is_id; 1280ffe82e05SAlexander Motin memcpy(&request->idr_isid, &is->is_isid, 1281ffe82e05SAlexander Motin sizeof(request->idr_isid)); 1282ffe82e05SAlexander Motin request->idr_tsih = 0; /* New or reinstated session. */ 1283009ea47eSEdward Tomasz Napierala memcpy(&request->idr_conf, &is->is_conf, 1284009ea47eSEdward Tomasz Napierala sizeof(request->idr_conf)); 1285009ea47eSEdward Tomasz Napierala 1286009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1287009ea47eSEdward Tomasz Napierala return (0); 1288009ea47eSEdward Tomasz Napierala } 1289009ea47eSEdward Tomasz Napierala } 1290009ea47eSEdward Tomasz Napierala 1291009ea47eSEdward Tomasz Napierala static int 1292009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_handoff(struct iscsi_softc *sc, 1293009ea47eSEdward Tomasz Napierala struct iscsi_daemon_handoff *handoff) 1294009ea47eSEdward Tomasz Napierala { 1295009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1296009ea47eSEdward Tomasz Napierala int error; 1297009ea47eSEdward Tomasz Napierala 1298009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1299009ea47eSEdward Tomasz Napierala 1300009ea47eSEdward Tomasz Napierala /* 1301009ea47eSEdward Tomasz Napierala * Find the session to hand off socket to. 1302009ea47eSEdward Tomasz Napierala */ 1303009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1304009ea47eSEdward Tomasz Napierala if (is->is_id == handoff->idh_session_id) 1305009ea47eSEdward Tomasz Napierala break; 1306009ea47eSEdward Tomasz Napierala } 1307009ea47eSEdward Tomasz Napierala if (is == NULL) { 1308009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1309009ea47eSEdward Tomasz Napierala return (ESRCH); 1310009ea47eSEdward Tomasz Napierala } 1311009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1312009ea47eSEdward Tomasz Napierala if (is->is_conf.isc_discovery || is->is_terminating) { 1313009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1314009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1315009ea47eSEdward Tomasz Napierala return (EINVAL); 1316009ea47eSEdward Tomasz Napierala } 13170260023fSEdward Tomasz Napierala if (is->is_connected) { 13180260023fSEdward Tomasz Napierala /* 13190260023fSEdward Tomasz Napierala * This might have happened because another iscsid(8) 13200260023fSEdward Tomasz Napierala * instance handed off the connection in the meantime. 13210260023fSEdward Tomasz Napierala * Just return. 13220260023fSEdward Tomasz Napierala */ 13230260023fSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "handoff on already connected " 13240260023fSEdward Tomasz Napierala "session"); 13250260023fSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 13260260023fSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 13270260023fSEdward Tomasz Napierala return (EBUSY); 13280260023fSEdward Tomasz Napierala } 1329009ea47eSEdward Tomasz Napierala 1330009ea47eSEdward Tomasz Napierala strlcpy(is->is_target_alias, handoff->idh_target_alias, 1331009ea47eSEdward Tomasz Napierala sizeof(is->is_target_alias)); 1332ffe82e05SAlexander Motin is->is_tsih = handoff->idh_tsih; 1333009ea47eSEdward Tomasz Napierala is->is_statsn = handoff->idh_statsn; 1334009ea47eSEdward Tomasz Napierala is->is_initial_r2t = handoff->idh_initial_r2t; 1335009ea47eSEdward Tomasz Napierala is->is_immediate_data = handoff->idh_immediate_data; 1336009ea47eSEdward Tomasz Napierala is->is_max_data_segment_length = handoff->idh_max_data_segment_length; 1337009ea47eSEdward Tomasz Napierala is->is_max_burst_length = handoff->idh_max_burst_length; 1338009ea47eSEdward Tomasz Napierala is->is_first_burst_length = handoff->idh_first_burst_length; 1339009ea47eSEdward Tomasz Napierala 1340009ea47eSEdward Tomasz Napierala if (handoff->idh_header_digest == ISCSI_DIGEST_CRC32C) 1341009ea47eSEdward Tomasz Napierala is->is_conn->ic_header_crc32c = true; 1342009ea47eSEdward Tomasz Napierala else 1343009ea47eSEdward Tomasz Napierala is->is_conn->ic_header_crc32c = false; 1344009ea47eSEdward Tomasz Napierala if (handoff->idh_data_digest == ISCSI_DIGEST_CRC32C) 1345009ea47eSEdward Tomasz Napierala is->is_conn->ic_data_crc32c = true; 1346009ea47eSEdward Tomasz Napierala else 1347009ea47eSEdward Tomasz Napierala is->is_conn->ic_data_crc32c = false; 1348009ea47eSEdward Tomasz Napierala 1349009ea47eSEdward Tomasz Napierala is->is_cmdsn = 0; 1350cf23c509SEdward Tomasz Napierala is->is_expcmdsn = 0; 1351cf23c509SEdward Tomasz Napierala is->is_maxcmdsn = 0; 1352009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = false; 1353009ea47eSEdward Tomasz Napierala is->is_login_phase = false; 1354009ea47eSEdward Tomasz Napierala is->is_timeout = 0; 1355009ea47eSEdward Tomasz Napierala is->is_connected = true; 1356009ea47eSEdward Tomasz Napierala is->is_reason[0] = '\0'; 1357009ea47eSEdward Tomasz Napierala 1358009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1359009ea47eSEdward Tomasz Napierala 136057a4f20bSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 136157a4f20bSEdward Tomasz Napierala if (handoff->idh_socket != 0) { 136257a4f20bSEdward Tomasz Napierala #endif 136357a4f20bSEdward Tomasz Napierala /* 136457a4f20bSEdward Tomasz Napierala * Handoff without using ICL proxy. 136557a4f20bSEdward Tomasz Napierala */ 1366009ea47eSEdward Tomasz Napierala error = icl_conn_handoff(is->is_conn, handoff->idh_socket); 1367009ea47eSEdward Tomasz Napierala if (error != 0) { 1368009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1369009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1370009ea47eSEdward Tomasz Napierala return (error); 1371009ea47eSEdward Tomasz Napierala } 137257a4f20bSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 137357a4f20bSEdward Tomasz Napierala } 1374009ea47eSEdward Tomasz Napierala #endif 1375009ea47eSEdward Tomasz Napierala 1376009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1377009ea47eSEdward Tomasz Napierala 1378009ea47eSEdward Tomasz Napierala if (is->is_sim != NULL) { 1379009ea47eSEdward Tomasz Napierala /* 1380009ea47eSEdward Tomasz Napierala * When reconnecting, there already is SIM allocated for the session. 1381009ea47eSEdward Tomasz Napierala */ 1382009ea47eSEdward Tomasz Napierala KASSERT(is->is_simq_frozen, ("reconnect without frozen simq")); 1383009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1384009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "releasing"); 1385009ea47eSEdward Tomasz Napierala xpt_release_simq(is->is_sim, 1); 1386009ea47eSEdward Tomasz Napierala is->is_simq_frozen = false; 1387009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1388009ea47eSEdward Tomasz Napierala 1389009ea47eSEdward Tomasz Napierala } else { 1390009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1391009ea47eSEdward Tomasz Napierala is->is_devq = cam_simq_alloc(maxtags); 1392009ea47eSEdward Tomasz Napierala if (is->is_devq == NULL) { 1393009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate simq"); 1394009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1395009ea47eSEdward Tomasz Napierala return (ENOMEM); 1396009ea47eSEdward Tomasz Napierala } 1397009ea47eSEdward Tomasz Napierala 1398009ea47eSEdward Tomasz Napierala is->is_sim = cam_sim_alloc(iscsi_action, iscsi_poll, "iscsi", 1399009ea47eSEdward Tomasz Napierala is, is->is_id /* unit */, &is->is_lock, 1400462cf3baSAlexander Motin 1, maxtags, is->is_devq); 1401009ea47eSEdward Tomasz Napierala if (is->is_sim == NULL) { 1402009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1403009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate SIM"); 1404009ea47eSEdward Tomasz Napierala cam_simq_free(is->is_devq); 1405009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1406009ea47eSEdward Tomasz Napierala return (ENOMEM); 1407009ea47eSEdward Tomasz Napierala } 1408009ea47eSEdward Tomasz Napierala 1409009ea47eSEdward Tomasz Napierala error = xpt_bus_register(is->is_sim, NULL, 0); 1410009ea47eSEdward Tomasz Napierala if (error != 0) { 1411009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1412009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to register bus"); 1413009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1414009ea47eSEdward Tomasz Napierala return (ENOMEM); 1415009ea47eSEdward Tomasz Napierala } 1416009ea47eSEdward Tomasz Napierala 1417009ea47eSEdward Tomasz Napierala error = xpt_create_path(&is->is_path, /*periph*/NULL, 1418009ea47eSEdward Tomasz Napierala cam_sim_path(is->is_sim), CAM_TARGET_WILDCARD, 1419009ea47eSEdward Tomasz Napierala CAM_LUN_WILDCARD); 1420009ea47eSEdward Tomasz Napierala if (error != CAM_REQ_CMP) { 1421009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1422009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to create path"); 1423009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1424009ea47eSEdward Tomasz Napierala return (ENOMEM); 1425009ea47eSEdward Tomasz Napierala } 1426009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1427009ea47eSEdward Tomasz Napierala } 1428009ea47eSEdward Tomasz Napierala 1429009ea47eSEdward Tomasz Napierala return (0); 1430009ea47eSEdward Tomasz Napierala } 1431009ea47eSEdward Tomasz Napierala 1432009ea47eSEdward Tomasz Napierala static int 1433009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_fail(struct iscsi_softc *sc, 1434009ea47eSEdward Tomasz Napierala struct iscsi_daemon_fail *fail) 1435009ea47eSEdward Tomasz Napierala { 1436009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1437009ea47eSEdward Tomasz Napierala 1438009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1439009ea47eSEdward Tomasz Napierala 1440009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1441009ea47eSEdward Tomasz Napierala if (is->is_id == fail->idf_session_id) 1442009ea47eSEdward Tomasz Napierala break; 1443009ea47eSEdward Tomasz Napierala } 1444009ea47eSEdward Tomasz Napierala if (is == NULL) { 1445009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1446009ea47eSEdward Tomasz Napierala return (ESRCH); 1447009ea47eSEdward Tomasz Napierala } 1448009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1449009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "iscsid(8) failed: %s", 1450009ea47eSEdward Tomasz Napierala fail->idf_reason); 1451009ea47eSEdward Tomasz Napierala strlcpy(is->is_reason, fail->idf_reason, sizeof(is->is_reason)); 1452009ea47eSEdward Tomasz Napierala //is->is_waiting_for_iscsid = false; 1453009ea47eSEdward Tomasz Napierala //is->is_login_phase = true; 1454009ea47eSEdward Tomasz Napierala //iscsi_session_reconnect(is); 1455009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1456009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1457009ea47eSEdward Tomasz Napierala 1458009ea47eSEdward Tomasz Napierala return (0); 1459009ea47eSEdward Tomasz Napierala } 1460009ea47eSEdward Tomasz Napierala 1461009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 1462009ea47eSEdward Tomasz Napierala static int 1463009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_connect(struct iscsi_softc *sc, 1464009ea47eSEdward Tomasz Napierala struct iscsi_daemon_connect *idc) 1465009ea47eSEdward Tomasz Napierala { 1466009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1467009ea47eSEdward Tomasz Napierala struct sockaddr *from_sa, *to_sa; 1468009ea47eSEdward Tomasz Napierala int error; 1469009ea47eSEdward Tomasz Napierala 1470009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1471009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1472009ea47eSEdward Tomasz Napierala if (is->is_id == idc->idc_session_id) 1473009ea47eSEdward Tomasz Napierala break; 1474009ea47eSEdward Tomasz Napierala } 1475009ea47eSEdward Tomasz Napierala if (is == NULL) { 1476009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1477009ea47eSEdward Tomasz Napierala return (ESRCH); 1478009ea47eSEdward Tomasz Napierala } 1479009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1480009ea47eSEdward Tomasz Napierala 1481009ea47eSEdward Tomasz Napierala if (idc->idc_from_addrlen > 0) { 1482009ea47eSEdward Tomasz Napierala error = getsockaddr(&from_sa, (void *)idc->idc_from_addr, idc->idc_from_addrlen); 148357a4f20bSEdward Tomasz Napierala if (error != 0) { 148457a4f20bSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, 148557a4f20bSEdward Tomasz Napierala "getsockaddr failed with error %d", error); 1486009ea47eSEdward Tomasz Napierala return (error); 148757a4f20bSEdward Tomasz Napierala } 1488009ea47eSEdward Tomasz Napierala } else { 1489009ea47eSEdward Tomasz Napierala from_sa = NULL; 1490009ea47eSEdward Tomasz Napierala } 1491009ea47eSEdward Tomasz Napierala error = getsockaddr(&to_sa, (void *)idc->idc_to_addr, idc->idc_to_addrlen); 1492009ea47eSEdward Tomasz Napierala if (error != 0) { 149357a4f20bSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "getsockaddr failed with error %d", 149457a4f20bSEdward Tomasz Napierala error); 1495009ea47eSEdward Tomasz Napierala free(from_sa, M_SONAME); 1496009ea47eSEdward Tomasz Napierala return (error); 1497009ea47eSEdward Tomasz Napierala } 1498009ea47eSEdward Tomasz Napierala 1499009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1500009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = false; 1501009ea47eSEdward Tomasz Napierala is->is_login_phase = true; 1502009ea47eSEdward Tomasz Napierala is->is_timeout = 0; 1503009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1504009ea47eSEdward Tomasz Napierala 1505009ea47eSEdward Tomasz Napierala error = icl_conn_connect(is->is_conn, idc->idc_iser, idc->idc_domain, 1506009ea47eSEdward Tomasz Napierala idc->idc_socktype, idc->idc_protocol, from_sa, to_sa); 1507009ea47eSEdward Tomasz Napierala free(from_sa, M_SONAME); 1508009ea47eSEdward Tomasz Napierala free(to_sa, M_SONAME); 1509009ea47eSEdward Tomasz Napierala 1510009ea47eSEdward Tomasz Napierala /* 1511009ea47eSEdward Tomasz Napierala * Digests are always disabled during login phase. 1512009ea47eSEdward Tomasz Napierala */ 1513009ea47eSEdward Tomasz Napierala is->is_conn->ic_header_crc32c = false; 1514009ea47eSEdward Tomasz Napierala is->is_conn->ic_data_crc32c = false; 1515009ea47eSEdward Tomasz Napierala 1516009ea47eSEdward Tomasz Napierala return (error); 1517009ea47eSEdward Tomasz Napierala } 1518009ea47eSEdward Tomasz Napierala 1519009ea47eSEdward Tomasz Napierala static int 1520009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_send(struct iscsi_softc *sc, 1521009ea47eSEdward Tomasz Napierala struct iscsi_daemon_send *ids) 1522009ea47eSEdward Tomasz Napierala { 1523009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1524009ea47eSEdward Tomasz Napierala struct icl_pdu *ip; 1525009ea47eSEdward Tomasz Napierala size_t datalen; 1526009ea47eSEdward Tomasz Napierala void *data; 1527009ea47eSEdward Tomasz Napierala int error; 1528009ea47eSEdward Tomasz Napierala 1529009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1530009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1531009ea47eSEdward Tomasz Napierala if (is->is_id == ids->ids_session_id) 1532009ea47eSEdward Tomasz Napierala break; 1533009ea47eSEdward Tomasz Napierala } 1534009ea47eSEdward Tomasz Napierala if (is == NULL) { 1535009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1536009ea47eSEdward Tomasz Napierala return (ESRCH); 1537009ea47eSEdward Tomasz Napierala } 1538009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1539009ea47eSEdward Tomasz Napierala 1540009ea47eSEdward Tomasz Napierala if (is->is_login_phase == false) 1541009ea47eSEdward Tomasz Napierala return (EBUSY); 1542009ea47eSEdward Tomasz Napierala 1543009ea47eSEdward Tomasz Napierala if (is->is_terminating || is->is_reconnecting) 1544009ea47eSEdward Tomasz Napierala return (EIO); 1545009ea47eSEdward Tomasz Napierala 1546009ea47eSEdward Tomasz Napierala datalen = ids->ids_data_segment_len; 1547009ea47eSEdward Tomasz Napierala if (datalen > ISCSI_MAX_DATA_SEGMENT_LENGTH) 1548009ea47eSEdward Tomasz Napierala return (EINVAL); 1549009ea47eSEdward Tomasz Napierala if (datalen > 0) { 1550009ea47eSEdward Tomasz Napierala data = malloc(datalen, M_ISCSI, M_WAITOK); 1551009ea47eSEdward Tomasz Napierala error = copyin(ids->ids_data_segment, data, datalen); 1552009ea47eSEdward Tomasz Napierala if (error != 0) { 1553009ea47eSEdward Tomasz Napierala free(data, M_ISCSI); 1554009ea47eSEdward Tomasz Napierala return (error); 1555009ea47eSEdward Tomasz Napierala } 1556009ea47eSEdward Tomasz Napierala } 1557009ea47eSEdward Tomasz Napierala 1558009ea47eSEdward Tomasz Napierala ip = icl_pdu_new_bhs(is->is_conn, M_WAITOK); 1559009ea47eSEdward Tomasz Napierala memcpy(ip->ip_bhs, ids->ids_bhs, sizeof(*ip->ip_bhs)); 1560009ea47eSEdward Tomasz Napierala if (datalen > 0) { 1561009ea47eSEdward Tomasz Napierala error = icl_pdu_append_data(ip, data, datalen, M_WAITOK); 1562009ea47eSEdward Tomasz Napierala KASSERT(error == 0, ("icl_pdu_append_data(..., M_WAITOK) failed")); 1563009ea47eSEdward Tomasz Napierala free(data, M_ISCSI); 1564009ea47eSEdward Tomasz Napierala } 1565009ea47eSEdward Tomasz Napierala icl_pdu_queue(ip); 1566009ea47eSEdward Tomasz Napierala 1567009ea47eSEdward Tomasz Napierala return (0); 1568009ea47eSEdward Tomasz Napierala } 1569009ea47eSEdward Tomasz Napierala 1570009ea47eSEdward Tomasz Napierala static int 1571009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_receive(struct iscsi_softc *sc, 1572009ea47eSEdward Tomasz Napierala struct iscsi_daemon_receive *idr) 1573009ea47eSEdward Tomasz Napierala { 1574009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1575009ea47eSEdward Tomasz Napierala struct icl_pdu *ip; 1576009ea47eSEdward Tomasz Napierala void *data; 1577009ea47eSEdward Tomasz Napierala 1578009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1579009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1580009ea47eSEdward Tomasz Napierala if (is->is_id == idr->idr_session_id) 1581009ea47eSEdward Tomasz Napierala break; 1582009ea47eSEdward Tomasz Napierala } 1583009ea47eSEdward Tomasz Napierala if (is == NULL) { 1584009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1585009ea47eSEdward Tomasz Napierala return (ESRCH); 1586009ea47eSEdward Tomasz Napierala } 1587009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1588009ea47eSEdward Tomasz Napierala 1589009ea47eSEdward Tomasz Napierala if (is->is_login_phase == false) 1590009ea47eSEdward Tomasz Napierala return (EBUSY); 1591009ea47eSEdward Tomasz Napierala 1592009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1593009ea47eSEdward Tomasz Napierala while (is->is_login_pdu == NULL && 1594009ea47eSEdward Tomasz Napierala is->is_terminating == false && 1595009ea47eSEdward Tomasz Napierala is->is_reconnecting == false) 1596009ea47eSEdward Tomasz Napierala cv_wait(&is->is_login_cv, &is->is_lock); 1597009ea47eSEdward Tomasz Napierala if (is->is_terminating || is->is_reconnecting) { 1598009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1599009ea47eSEdward Tomasz Napierala return (EIO); 1600009ea47eSEdward Tomasz Napierala } 1601009ea47eSEdward Tomasz Napierala ip = is->is_login_pdu; 1602009ea47eSEdward Tomasz Napierala is->is_login_pdu = NULL; 1603009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1604009ea47eSEdward Tomasz Napierala 1605009ea47eSEdward Tomasz Napierala if (ip->ip_data_len > idr->idr_data_segment_len) { 1606009ea47eSEdward Tomasz Napierala icl_pdu_free(ip); 1607009ea47eSEdward Tomasz Napierala return (EMSGSIZE); 1608009ea47eSEdward Tomasz Napierala } 1609009ea47eSEdward Tomasz Napierala 1610009ea47eSEdward Tomasz Napierala copyout(ip->ip_bhs, idr->idr_bhs, sizeof(*ip->ip_bhs)); 1611009ea47eSEdward Tomasz Napierala if (ip->ip_data_len > 0) { 1612009ea47eSEdward Tomasz Napierala data = malloc(ip->ip_data_len, M_ISCSI, M_WAITOK); 1613009ea47eSEdward Tomasz Napierala icl_pdu_get_data(ip, 0, data, ip->ip_data_len); 1614009ea47eSEdward Tomasz Napierala copyout(data, idr->idr_data_segment, ip->ip_data_len); 1615009ea47eSEdward Tomasz Napierala free(data, M_ISCSI); 1616009ea47eSEdward Tomasz Napierala } 1617009ea47eSEdward Tomasz Napierala 1618009ea47eSEdward Tomasz Napierala icl_pdu_free(ip); 1619009ea47eSEdward Tomasz Napierala 1620009ea47eSEdward Tomasz Napierala return (0); 1621009ea47eSEdward Tomasz Napierala } 1622009ea47eSEdward Tomasz Napierala #endif /* ICL_KERNEL_PROXY */ 1623009ea47eSEdward Tomasz Napierala 1624009ea47eSEdward Tomasz Napierala static void 1625009ea47eSEdward Tomasz Napierala iscsi_sanitize_session_conf(struct iscsi_session_conf *isc) 1626009ea47eSEdward Tomasz Napierala { 1627009ea47eSEdward Tomasz Napierala /* 1628009ea47eSEdward Tomasz Napierala * Just make sure all the fields are null-terminated. 1629009ea47eSEdward Tomasz Napierala * 1630009ea47eSEdward Tomasz Napierala * XXX: This is not particularly secure. We should 1631009ea47eSEdward Tomasz Napierala * create our own conf and then copy in relevant 1632009ea47eSEdward Tomasz Napierala * fields. 1633009ea47eSEdward Tomasz Napierala */ 1634009ea47eSEdward Tomasz Napierala isc->isc_initiator[ISCSI_NAME_LEN - 1] = '\0'; 1635009ea47eSEdward Tomasz Napierala isc->isc_initiator_addr[ISCSI_ADDR_LEN - 1] = '\0'; 1636009ea47eSEdward Tomasz Napierala isc->isc_initiator_alias[ISCSI_ALIAS_LEN - 1] = '\0'; 1637009ea47eSEdward Tomasz Napierala isc->isc_target[ISCSI_NAME_LEN - 1] = '\0'; 1638009ea47eSEdward Tomasz Napierala isc->isc_target_addr[ISCSI_ADDR_LEN - 1] = '\0'; 1639009ea47eSEdward Tomasz Napierala isc->isc_user[ISCSI_NAME_LEN - 1] = '\0'; 1640009ea47eSEdward Tomasz Napierala isc->isc_secret[ISCSI_SECRET_LEN - 1] = '\0'; 1641009ea47eSEdward Tomasz Napierala isc->isc_mutual_user[ISCSI_NAME_LEN - 1] = '\0'; 1642009ea47eSEdward Tomasz Napierala isc->isc_mutual_secret[ISCSI_SECRET_LEN - 1] = '\0'; 1643009ea47eSEdward Tomasz Napierala } 1644009ea47eSEdward Tomasz Napierala 164551be90b5SEdward Tomasz Napierala static bool 164651be90b5SEdward Tomasz Napierala iscsi_valid_session_conf(const struct iscsi_session_conf *isc) 164751be90b5SEdward Tomasz Napierala { 164851be90b5SEdward Tomasz Napierala 164951be90b5SEdward Tomasz Napierala if (isc->isc_initiator[0] == '\0') { 165051be90b5SEdward Tomasz Napierala ISCSI_DEBUG("empty isc_initiator"); 165151be90b5SEdward Tomasz Napierala return (false); 165251be90b5SEdward Tomasz Napierala } 165351be90b5SEdward Tomasz Napierala 165451be90b5SEdward Tomasz Napierala if (isc->isc_target_addr[0] == '\0') { 165551be90b5SEdward Tomasz Napierala ISCSI_DEBUG("empty isc_target_addr"); 165651be90b5SEdward Tomasz Napierala return (false); 165751be90b5SEdward Tomasz Napierala } 165851be90b5SEdward Tomasz Napierala 165951be90b5SEdward Tomasz Napierala if (isc->isc_discovery != 0 && isc->isc_target[0] != 0) { 166051be90b5SEdward Tomasz Napierala ISCSI_DEBUG("non-empty isc_target for discovery session"); 166151be90b5SEdward Tomasz Napierala return (false); 166251be90b5SEdward Tomasz Napierala } 166351be90b5SEdward Tomasz Napierala 166451be90b5SEdward Tomasz Napierala if (isc->isc_discovery == 0 && isc->isc_target[0] == 0) { 166551be90b5SEdward Tomasz Napierala ISCSI_DEBUG("empty isc_target for non-discovery session"); 166651be90b5SEdward Tomasz Napierala return (false); 166751be90b5SEdward Tomasz Napierala } 166851be90b5SEdward Tomasz Napierala 166951be90b5SEdward Tomasz Napierala return (true); 167051be90b5SEdward Tomasz Napierala } 167151be90b5SEdward Tomasz Napierala 1672009ea47eSEdward Tomasz Napierala static int 1673009ea47eSEdward Tomasz Napierala iscsi_ioctl_session_add(struct iscsi_softc *sc, struct iscsi_session_add *isa) 1674009ea47eSEdward Tomasz Napierala { 1675009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1676009ea47eSEdward Tomasz Napierala const struct iscsi_session *is2; 1677009ea47eSEdward Tomasz Napierala int error; 1678009ea47eSEdward Tomasz Napierala 1679009ea47eSEdward Tomasz Napierala iscsi_sanitize_session_conf(&isa->isa_conf); 168051be90b5SEdward Tomasz Napierala if (iscsi_valid_session_conf(&isa->isa_conf) == false) 168151be90b5SEdward Tomasz Napierala return (EINVAL); 1682009ea47eSEdward Tomasz Napierala 1683009ea47eSEdward Tomasz Napierala is = malloc(sizeof(*is), M_ISCSI, M_ZERO | M_WAITOK); 1684009ea47eSEdward Tomasz Napierala memcpy(&is->is_conf, &isa->isa_conf, sizeof(is->is_conf)); 1685009ea47eSEdward Tomasz Napierala 1686009ea47eSEdward Tomasz Napierala sx_xlock(&sc->sc_lock); 1687009ea47eSEdward Tomasz Napierala 1688009ea47eSEdward Tomasz Napierala /* 1689009ea47eSEdward Tomasz Napierala * Prevent duplicates. 1690009ea47eSEdward Tomasz Napierala */ 1691009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is2, &sc->sc_sessions, is_next) { 16927843bd03SEdward Tomasz Napierala if (!!is->is_conf.isc_discovery != 16937843bd03SEdward Tomasz Napierala !!is2->is_conf.isc_discovery) 16947843bd03SEdward Tomasz Napierala continue; 16957843bd03SEdward Tomasz Napierala 16967843bd03SEdward Tomasz Napierala if (strcmp(is->is_conf.isc_target_addr, 16977843bd03SEdward Tomasz Napierala is2->is_conf.isc_target_addr) != 0) 16987843bd03SEdward Tomasz Napierala continue; 16997843bd03SEdward Tomasz Napierala 17007843bd03SEdward Tomasz Napierala if (is->is_conf.isc_discovery == 0 && 17017843bd03SEdward Tomasz Napierala strcmp(is->is_conf.isc_target, 17027843bd03SEdward Tomasz Napierala is2->is_conf.isc_target) != 0) 17037843bd03SEdward Tomasz Napierala continue; 17047843bd03SEdward Tomasz Napierala 1705009ea47eSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 17067843bd03SEdward Tomasz Napierala free(is, M_ISCSI); 1707009ea47eSEdward Tomasz Napierala return (EBUSY); 1708009ea47eSEdward Tomasz Napierala } 1709009ea47eSEdward Tomasz Napierala 1710ecba49ddSEdward Tomasz Napierala is->is_conn = icl_conn_new("iscsi", &is->is_lock); 1711009ea47eSEdward Tomasz Napierala is->is_conn->ic_receive = iscsi_receive_callback; 1712009ea47eSEdward Tomasz Napierala is->is_conn->ic_error = iscsi_error_callback; 1713009ea47eSEdward Tomasz Napierala is->is_conn->ic_prv0 = is; 1714009ea47eSEdward Tomasz Napierala TAILQ_INIT(&is->is_outstanding); 171516c158a5SEdward Tomasz Napierala STAILQ_INIT(&is->is_postponed); 1716009ea47eSEdward Tomasz Napierala mtx_init(&is->is_lock, "iscsi_lock", NULL, MTX_DEF); 1717009ea47eSEdward Tomasz Napierala cv_init(&is->is_maintenance_cv, "iscsi_mt"); 1718009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 1719009ea47eSEdward Tomasz Napierala cv_init(&is->is_login_cv, "iscsi_login"); 1720009ea47eSEdward Tomasz Napierala #endif 1721009ea47eSEdward Tomasz Napierala 1722009ea47eSEdward Tomasz Napierala is->is_softc = sc; 1723009ea47eSEdward Tomasz Napierala sc->sc_last_session_id++; 1724009ea47eSEdward Tomasz Napierala is->is_id = sc->sc_last_session_id; 1725ffe82e05SAlexander Motin is->is_isid[0] = 0x80; /* RFC 3720, 10.12.5: 10b, "Random" ISID. */ 1726ffe82e05SAlexander Motin arc4rand(&is->is_isid[1], 5, 0); 1727ffe82e05SAlexander Motin is->is_tsih = 0; 1728009ea47eSEdward Tomasz Napierala callout_init(&is->is_callout, 1); 1729009ea47eSEdward Tomasz Napierala callout_reset(&is->is_callout, 1 * hz, iscsi_callout, is); 1730009ea47eSEdward Tomasz Napierala TAILQ_INSERT_TAIL(&sc->sc_sessions, is, is_next); 1731009ea47eSEdward Tomasz Napierala 1732009ea47eSEdward Tomasz Napierala error = kthread_add(iscsi_maintenance_thread, is, NULL, NULL, 0, 0, "iscsimt"); 1733009ea47eSEdward Tomasz Napierala if (error != 0) { 1734009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "kthread_add(9) failed with error %d", error); 1735009ea47eSEdward Tomasz Napierala return (error); 1736009ea47eSEdward Tomasz Napierala } 1737009ea47eSEdward Tomasz Napierala 1738009ea47eSEdward Tomasz Napierala /* 1739009ea47eSEdward Tomasz Napierala * Trigger immediate reconnection. 1740009ea47eSEdward Tomasz Napierala */ 17412be596adSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1742009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = true; 1743009ea47eSEdward Tomasz Napierala strlcpy(is->is_reason, "Waiting for iscsid(8)", sizeof(is->is_reason)); 17442be596adSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1745009ea47eSEdward Tomasz Napierala cv_signal(&sc->sc_cv); 1746009ea47eSEdward Tomasz Napierala 1747009ea47eSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 1748009ea47eSEdward Tomasz Napierala 1749009ea47eSEdward Tomasz Napierala return (0); 1750009ea47eSEdward Tomasz Napierala } 1751009ea47eSEdward Tomasz Napierala 1752009ea47eSEdward Tomasz Napierala static bool 1753009ea47eSEdward Tomasz Napierala iscsi_session_conf_matches(unsigned int id1, const struct iscsi_session_conf *c1, 1754009ea47eSEdward Tomasz Napierala unsigned int id2, const struct iscsi_session_conf *c2) 1755009ea47eSEdward Tomasz Napierala { 1756009ea47eSEdward Tomasz Napierala if (id2 == 0 && c2->isc_target[0] == '\0' && 1757009ea47eSEdward Tomasz Napierala c2->isc_target_addr[0] == '\0') 1758009ea47eSEdward Tomasz Napierala return (true); 1759009ea47eSEdward Tomasz Napierala if (id2 != 0 && id2 == id1) 1760009ea47eSEdward Tomasz Napierala return (true); 1761009ea47eSEdward Tomasz Napierala if (c2->isc_target[0] != '\0' && 1762009ea47eSEdward Tomasz Napierala strcmp(c1->isc_target, c2->isc_target) == 0) 1763009ea47eSEdward Tomasz Napierala return (true); 1764009ea47eSEdward Tomasz Napierala if (c2->isc_target_addr[0] != '\0' && 1765009ea47eSEdward Tomasz Napierala strcmp(c1->isc_target_addr, c2->isc_target_addr) == 0) 1766009ea47eSEdward Tomasz Napierala return (true); 1767009ea47eSEdward Tomasz Napierala return (false); 1768009ea47eSEdward Tomasz Napierala } 1769009ea47eSEdward Tomasz Napierala 1770009ea47eSEdward Tomasz Napierala static int 1771009ea47eSEdward Tomasz Napierala iscsi_ioctl_session_remove(struct iscsi_softc *sc, 1772009ea47eSEdward Tomasz Napierala struct iscsi_session_remove *isr) 1773009ea47eSEdward Tomasz Napierala { 1774009ea47eSEdward Tomasz Napierala struct iscsi_session *is, *tmp; 1775009ea47eSEdward Tomasz Napierala bool found = false; 1776009ea47eSEdward Tomasz Napierala 1777009ea47eSEdward Tomasz Napierala iscsi_sanitize_session_conf(&isr->isr_conf); 1778009ea47eSEdward Tomasz Napierala 1779009ea47eSEdward Tomasz Napierala sx_xlock(&sc->sc_lock); 1780009ea47eSEdward Tomasz Napierala TAILQ_FOREACH_SAFE(is, &sc->sc_sessions, is_next, tmp) { 1781009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1782009ea47eSEdward Tomasz Napierala if (iscsi_session_conf_matches(is->is_id, &is->is_conf, 1783009ea47eSEdward Tomasz Napierala isr->isr_session_id, &isr->isr_conf)) { 1784009ea47eSEdward Tomasz Napierala found = true; 1785009ea47eSEdward Tomasz Napierala iscsi_session_logout(is); 1786009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1787009ea47eSEdward Tomasz Napierala } 1788009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1789009ea47eSEdward Tomasz Napierala } 1790009ea47eSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 1791009ea47eSEdward Tomasz Napierala 1792009ea47eSEdward Tomasz Napierala if (!found) 1793009ea47eSEdward Tomasz Napierala return (ESRCH); 1794009ea47eSEdward Tomasz Napierala 1795009ea47eSEdward Tomasz Napierala return (0); 1796009ea47eSEdward Tomasz Napierala } 1797009ea47eSEdward Tomasz Napierala 1798009ea47eSEdward Tomasz Napierala static int 1799009ea47eSEdward Tomasz Napierala iscsi_ioctl_session_list(struct iscsi_softc *sc, struct iscsi_session_list *isl) 1800009ea47eSEdward Tomasz Napierala { 1801009ea47eSEdward Tomasz Napierala int error; 1802009ea47eSEdward Tomasz Napierala unsigned int i = 0; 1803009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1804009ea47eSEdward Tomasz Napierala struct iscsi_session_state iss; 1805009ea47eSEdward Tomasz Napierala 1806009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1807009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1808009ea47eSEdward Tomasz Napierala if (i >= isl->isl_nentries) { 1809009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1810009ea47eSEdward Tomasz Napierala return (EMSGSIZE); 1811009ea47eSEdward Tomasz Napierala } 1812009ea47eSEdward Tomasz Napierala memset(&iss, 0, sizeof(iss)); 1813009ea47eSEdward Tomasz Napierala memcpy(&iss.iss_conf, &is->is_conf, sizeof(iss.iss_conf)); 1814009ea47eSEdward Tomasz Napierala iss.iss_id = is->is_id; 1815009ea47eSEdward Tomasz Napierala strlcpy(iss.iss_target_alias, is->is_target_alias, sizeof(iss.iss_target_alias)); 1816009ea47eSEdward Tomasz Napierala strlcpy(iss.iss_reason, is->is_reason, sizeof(iss.iss_reason)); 1817009ea47eSEdward Tomasz Napierala 1818009ea47eSEdward Tomasz Napierala if (is->is_conn->ic_header_crc32c) 1819009ea47eSEdward Tomasz Napierala iss.iss_header_digest = ISCSI_DIGEST_CRC32C; 1820009ea47eSEdward Tomasz Napierala else 1821009ea47eSEdward Tomasz Napierala iss.iss_header_digest = ISCSI_DIGEST_NONE; 1822009ea47eSEdward Tomasz Napierala 1823009ea47eSEdward Tomasz Napierala if (is->is_conn->ic_data_crc32c) 1824009ea47eSEdward Tomasz Napierala iss.iss_data_digest = ISCSI_DIGEST_CRC32C; 1825009ea47eSEdward Tomasz Napierala else 1826009ea47eSEdward Tomasz Napierala iss.iss_data_digest = ISCSI_DIGEST_NONE; 1827009ea47eSEdward Tomasz Napierala 1828009ea47eSEdward Tomasz Napierala iss.iss_max_data_segment_length = is->is_max_data_segment_length; 1829009ea47eSEdward Tomasz Napierala iss.iss_immediate_data = is->is_immediate_data; 1830009ea47eSEdward Tomasz Napierala iss.iss_connected = is->is_connected; 1831009ea47eSEdward Tomasz Napierala 1832009ea47eSEdward Tomasz Napierala error = copyout(&iss, isl->isl_pstates + i, sizeof(iss)); 1833009ea47eSEdward Tomasz Napierala if (error != 0) { 1834009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1835009ea47eSEdward Tomasz Napierala return (error); 1836009ea47eSEdward Tomasz Napierala } 1837009ea47eSEdward Tomasz Napierala i++; 1838009ea47eSEdward Tomasz Napierala } 1839009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1840009ea47eSEdward Tomasz Napierala 1841009ea47eSEdward Tomasz Napierala isl->isl_nentries = i; 1842009ea47eSEdward Tomasz Napierala 1843009ea47eSEdward Tomasz Napierala return (0); 1844009ea47eSEdward Tomasz Napierala } 1845009ea47eSEdward Tomasz Napierala 1846009ea47eSEdward Tomasz Napierala static int 184751be90b5SEdward Tomasz Napierala iscsi_ioctl_session_modify(struct iscsi_softc *sc, 184851be90b5SEdward Tomasz Napierala struct iscsi_session_modify *ism) 184951be90b5SEdward Tomasz Napierala { 185051be90b5SEdward Tomasz Napierala struct iscsi_session *is; 185151be90b5SEdward Tomasz Napierala 185251be90b5SEdward Tomasz Napierala iscsi_sanitize_session_conf(&ism->ism_conf); 185351be90b5SEdward Tomasz Napierala if (iscsi_valid_session_conf(&ism->ism_conf) == false) 185451be90b5SEdward Tomasz Napierala return (EINVAL); 185551be90b5SEdward Tomasz Napierala 185651be90b5SEdward Tomasz Napierala sx_xlock(&sc->sc_lock); 185751be90b5SEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 185851be90b5SEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 185951be90b5SEdward Tomasz Napierala if (is->is_id == ism->ism_session_id) 186051be90b5SEdward Tomasz Napierala break; 186151be90b5SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 186251be90b5SEdward Tomasz Napierala } 186351be90b5SEdward Tomasz Napierala if (is == NULL) { 186451be90b5SEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 186551be90b5SEdward Tomasz Napierala return (ESRCH); 186651be90b5SEdward Tomasz Napierala } 186751be90b5SEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 186851be90b5SEdward Tomasz Napierala 186951be90b5SEdward Tomasz Napierala memcpy(&is->is_conf, &ism->ism_conf, sizeof(is->is_conf)); 187051be90b5SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 187151be90b5SEdward Tomasz Napierala 187251be90b5SEdward Tomasz Napierala iscsi_session_reconnect(is); 187351be90b5SEdward Tomasz Napierala 187451be90b5SEdward Tomasz Napierala return (0); 187551be90b5SEdward Tomasz Napierala } 187651be90b5SEdward Tomasz Napierala 187751be90b5SEdward Tomasz Napierala static int 1878009ea47eSEdward Tomasz Napierala iscsi_ioctl(struct cdev *dev, u_long cmd, caddr_t arg, int mode, 1879009ea47eSEdward Tomasz Napierala struct thread *td) 1880009ea47eSEdward Tomasz Napierala { 1881009ea47eSEdward Tomasz Napierala struct iscsi_softc *sc; 1882009ea47eSEdward Tomasz Napierala 1883009ea47eSEdward Tomasz Napierala sc = dev->si_drv1; 1884009ea47eSEdward Tomasz Napierala 1885009ea47eSEdward Tomasz Napierala switch (cmd) { 1886009ea47eSEdward Tomasz Napierala case ISCSIDWAIT: 1887009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_wait(sc, 1888009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_request *)arg)); 1889009ea47eSEdward Tomasz Napierala case ISCSIDHANDOFF: 1890009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_handoff(sc, 1891009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_handoff *)arg)); 1892009ea47eSEdward Tomasz Napierala case ISCSIDFAIL: 1893009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_fail(sc, 1894009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_fail *)arg)); 1895009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 1896009ea47eSEdward Tomasz Napierala case ISCSIDCONNECT: 1897009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_connect(sc, 1898009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_connect *)arg)); 1899009ea47eSEdward Tomasz Napierala case ISCSIDSEND: 1900009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_send(sc, 1901009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_send *)arg)); 1902009ea47eSEdward Tomasz Napierala case ISCSIDRECEIVE: 1903009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_receive(sc, 1904009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_receive *)arg)); 1905009ea47eSEdward Tomasz Napierala #endif /* ICL_KERNEL_PROXY */ 1906009ea47eSEdward Tomasz Napierala case ISCSISADD: 1907009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_session_add(sc, 1908009ea47eSEdward Tomasz Napierala (struct iscsi_session_add *)arg)); 1909009ea47eSEdward Tomasz Napierala case ISCSISREMOVE: 1910009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_session_remove(sc, 1911009ea47eSEdward Tomasz Napierala (struct iscsi_session_remove *)arg)); 1912009ea47eSEdward Tomasz Napierala case ISCSISLIST: 1913009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_session_list(sc, 1914009ea47eSEdward Tomasz Napierala (struct iscsi_session_list *)arg)); 191551be90b5SEdward Tomasz Napierala case ISCSISMODIFY: 191651be90b5SEdward Tomasz Napierala return (iscsi_ioctl_session_modify(sc, 191751be90b5SEdward Tomasz Napierala (struct iscsi_session_modify *)arg)); 1918009ea47eSEdward Tomasz Napierala default: 1919009ea47eSEdward Tomasz Napierala return (EINVAL); 1920009ea47eSEdward Tomasz Napierala } 1921009ea47eSEdward Tomasz Napierala } 1922009ea47eSEdward Tomasz Napierala 1923009ea47eSEdward Tomasz Napierala static struct iscsi_outstanding * 1924009ea47eSEdward Tomasz Napierala iscsi_outstanding_find(struct iscsi_session *is, uint32_t initiator_task_tag) 1925009ea47eSEdward Tomasz Napierala { 1926009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io; 1927009ea47eSEdward Tomasz Napierala 1928009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 1929009ea47eSEdward Tomasz Napierala 1930009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(io, &is->is_outstanding, io_next) { 1931009ea47eSEdward Tomasz Napierala if (io->io_initiator_task_tag == initiator_task_tag) 1932009ea47eSEdward Tomasz Napierala return (io); 1933009ea47eSEdward Tomasz Napierala } 1934009ea47eSEdward Tomasz Napierala return (NULL); 1935009ea47eSEdward Tomasz Napierala } 1936009ea47eSEdward Tomasz Napierala 1937aa75114cSAlexander Motin static struct iscsi_outstanding * 1938aa75114cSAlexander Motin iscsi_outstanding_find_ccb(struct iscsi_session *is, union ccb *ccb) 1939aa75114cSAlexander Motin { 1940aa75114cSAlexander Motin struct iscsi_outstanding *io; 1941aa75114cSAlexander Motin 1942aa75114cSAlexander Motin ISCSI_SESSION_LOCK_ASSERT(is); 1943aa75114cSAlexander Motin 1944aa75114cSAlexander Motin TAILQ_FOREACH(io, &is->is_outstanding, io_next) { 1945aa75114cSAlexander Motin if (io->io_ccb == ccb) 1946aa75114cSAlexander Motin return (io); 1947aa75114cSAlexander Motin } 1948aa75114cSAlexander Motin return (NULL); 1949aa75114cSAlexander Motin } 1950aa75114cSAlexander Motin 1951aa75114cSAlexander Motin static struct iscsi_outstanding * 1952009ea47eSEdward Tomasz Napierala iscsi_outstanding_add(struct iscsi_session *is, 1953009ea47eSEdward Tomasz Napierala uint32_t initiator_task_tag, union ccb *ccb) 1954009ea47eSEdward Tomasz Napierala { 1955009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io; 1956009ea47eSEdward Tomasz Napierala 1957009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 1958009ea47eSEdward Tomasz Napierala 1959009ea47eSEdward Tomasz Napierala KASSERT(iscsi_outstanding_find(is, initiator_task_tag) == NULL, 1960009ea47eSEdward Tomasz Napierala ("initiator_task_tag 0x%x already added", initiator_task_tag)); 1961009ea47eSEdward Tomasz Napierala 1962009ea47eSEdward Tomasz Napierala io = uma_zalloc(iscsi_outstanding_zone, M_NOWAIT | M_ZERO); 1963009ea47eSEdward Tomasz Napierala if (io == NULL) { 1964009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate %zd bytes", sizeof(*io)); 1965aa75114cSAlexander Motin return (NULL); 1966009ea47eSEdward Tomasz Napierala } 1967009ea47eSEdward Tomasz Napierala io->io_initiator_task_tag = initiator_task_tag; 1968009ea47eSEdward Tomasz Napierala io->io_ccb = ccb; 1969009ea47eSEdward Tomasz Napierala TAILQ_INSERT_TAIL(&is->is_outstanding, io, io_next); 1970aa75114cSAlexander Motin return (io); 1971009ea47eSEdward Tomasz Napierala } 1972009ea47eSEdward Tomasz Napierala 1973009ea47eSEdward Tomasz Napierala static void 1974009ea47eSEdward Tomasz Napierala iscsi_outstanding_remove(struct iscsi_session *is, struct iscsi_outstanding *io) 1975009ea47eSEdward Tomasz Napierala { 1976009ea47eSEdward Tomasz Napierala 1977009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 1978009ea47eSEdward Tomasz Napierala 1979009ea47eSEdward Tomasz Napierala TAILQ_REMOVE(&is->is_outstanding, io, io_next); 1980009ea47eSEdward Tomasz Napierala uma_zfree(iscsi_outstanding_zone, io); 1981009ea47eSEdward Tomasz Napierala } 1982009ea47eSEdward Tomasz Napierala 1983009ea47eSEdward Tomasz Napierala static void 1984aa75114cSAlexander Motin iscsi_action_abort(struct iscsi_session *is, union ccb *ccb) 1985aa75114cSAlexander Motin { 1986aa75114cSAlexander Motin struct icl_pdu *request; 1987aa75114cSAlexander Motin struct iscsi_bhs_task_management_request *bhstmr; 1988aa75114cSAlexander Motin struct ccb_abort *cab = &ccb->cab; 1989aa75114cSAlexander Motin struct iscsi_outstanding *io, *aio; 1990aa75114cSAlexander Motin 1991aa75114cSAlexander Motin ISCSI_SESSION_LOCK_ASSERT(is); 1992aa75114cSAlexander Motin 1993aa75114cSAlexander Motin #if 0 1994aa75114cSAlexander Motin KASSERT(is->is_login_phase == false, ("%s called during Login Phase", __func__)); 1995aa75114cSAlexander Motin #else 1996aa75114cSAlexander Motin if (is->is_login_phase) { 1997aa75114cSAlexander Motin ccb->ccb_h.status = CAM_REQ_ABORTED; 1998aa75114cSAlexander Motin xpt_done(ccb); 1999aa75114cSAlexander Motin return; 2000aa75114cSAlexander Motin } 2001aa75114cSAlexander Motin #endif 2002aa75114cSAlexander Motin 2003aa75114cSAlexander Motin aio = iscsi_outstanding_find_ccb(is, cab->abort_ccb); 2004aa75114cSAlexander Motin if (aio == NULL) { 2005aa75114cSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP; 2006aa75114cSAlexander Motin xpt_done(ccb); 2007aa75114cSAlexander Motin return; 2008aa75114cSAlexander Motin } 2009aa75114cSAlexander Motin 2010aa75114cSAlexander Motin request = icl_pdu_new_bhs(is->is_conn, M_NOWAIT); 2011aa75114cSAlexander Motin if (request == NULL) { 2012aa75114cSAlexander Motin ccb->ccb_h.status = CAM_RESRC_UNAVAIL; 2013aa75114cSAlexander Motin xpt_done(ccb); 2014aa75114cSAlexander Motin return; 2015aa75114cSAlexander Motin } 2016aa75114cSAlexander Motin 2017aa75114cSAlexander Motin bhstmr = (struct iscsi_bhs_task_management_request *)request->ip_bhs; 2018aa75114cSAlexander Motin bhstmr->bhstmr_opcode = ISCSI_BHS_OPCODE_TASK_REQUEST; 2019aa75114cSAlexander Motin bhstmr->bhstmr_function = 0x80 | BHSTMR_FUNCTION_ABORT_TASK; 2020aa75114cSAlexander Motin 2021aa75114cSAlexander Motin bhstmr->bhstmr_lun = htobe64(CAM_EXTLUN_BYTE_SWIZZLE(ccb->ccb_h.target_lun)); 2022aa75114cSAlexander Motin bhstmr->bhstmr_initiator_task_tag = is->is_initiator_task_tag; 2023aa75114cSAlexander Motin is->is_initiator_task_tag++; 2024aa75114cSAlexander Motin bhstmr->bhstmr_referenced_task_tag = aio->io_initiator_task_tag; 2025aa75114cSAlexander Motin 2026aa75114cSAlexander Motin io = iscsi_outstanding_add(is, bhstmr->bhstmr_initiator_task_tag, NULL); 2027aa75114cSAlexander Motin if (io == NULL) { 2028aa75114cSAlexander Motin icl_pdu_free(request); 2029aa75114cSAlexander Motin ccb->ccb_h.status = CAM_RESRC_UNAVAIL; 2030aa75114cSAlexander Motin xpt_done(ccb); 2031aa75114cSAlexander Motin return; 2032aa75114cSAlexander Motin } 2033aa75114cSAlexander Motin io->io_datasn = aio->io_initiator_task_tag; 2034aa75114cSAlexander Motin iscsi_pdu_queue_locked(request); 2035aa75114cSAlexander Motin } 2036aa75114cSAlexander Motin 2037aa75114cSAlexander Motin static void 2038009ea47eSEdward Tomasz Napierala iscsi_action_scsiio(struct iscsi_session *is, union ccb *ccb) 2039009ea47eSEdward Tomasz Napierala { 2040009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 2041009ea47eSEdward Tomasz Napierala struct iscsi_bhs_scsi_command *bhssc; 2042009ea47eSEdward Tomasz Napierala struct ccb_scsiio *csio; 2043aa75114cSAlexander Motin struct iscsi_outstanding *io; 2044009ea47eSEdward Tomasz Napierala size_t len; 2045009ea47eSEdward Tomasz Napierala int error; 2046009ea47eSEdward Tomasz Napierala 2047009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 2048009ea47eSEdward Tomasz Napierala 2049009ea47eSEdward Tomasz Napierala #if 0 2050009ea47eSEdward Tomasz Napierala KASSERT(is->is_login_phase == false, ("%s called during Login Phase", __func__)); 2051009ea47eSEdward Tomasz Napierala #else 2052009ea47eSEdward Tomasz Napierala if (is->is_login_phase) { 2053009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "called during login phase"); 2054009ea47eSEdward Tomasz Napierala if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 2055009ea47eSEdward Tomasz Napierala xpt_freeze_devq(ccb->ccb_h.path, 1); 2056009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 2057009ea47eSEdward Tomasz Napierala } 2058009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_REQ_ABORTED | CAM_DEV_QFRZN; 2059009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2060009ea47eSEdward Tomasz Napierala return; 2061009ea47eSEdward Tomasz Napierala } 2062009ea47eSEdward Tomasz Napierala #endif 2063009ea47eSEdward Tomasz Napierala 2064009ea47eSEdward Tomasz Napierala request = icl_pdu_new_bhs(is->is_conn, M_NOWAIT); 2065009ea47eSEdward Tomasz Napierala if (request == NULL) { 2066009ea47eSEdward Tomasz Napierala if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 2067009ea47eSEdward Tomasz Napierala xpt_freeze_devq(ccb->ccb_h.path, 1); 2068009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 2069009ea47eSEdward Tomasz Napierala } 2070009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_RESRC_UNAVAIL | CAM_DEV_QFRZN; 2071009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2072009ea47eSEdward Tomasz Napierala return; 2073009ea47eSEdward Tomasz Napierala } 2074009ea47eSEdward Tomasz Napierala 2075009ea47eSEdward Tomasz Napierala csio = &ccb->csio; 2076009ea47eSEdward Tomasz Napierala bhssc = (struct iscsi_bhs_scsi_command *)request->ip_bhs; 2077009ea47eSEdward Tomasz Napierala bhssc->bhssc_opcode = ISCSI_BHS_OPCODE_SCSI_COMMAND; 2078009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_F; 2079009ea47eSEdward Tomasz Napierala switch (csio->ccb_h.flags & CAM_DIR_MASK) { 2080009ea47eSEdward Tomasz Napierala case CAM_DIR_IN: 2081009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_R; 2082009ea47eSEdward Tomasz Napierala break; 2083009ea47eSEdward Tomasz Napierala case CAM_DIR_OUT: 2084009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_W; 2085009ea47eSEdward Tomasz Napierala break; 2086009ea47eSEdward Tomasz Napierala } 2087009ea47eSEdward Tomasz Napierala 2088462cf3baSAlexander Motin if ((ccb->ccb_h.flags & CAM_TAG_ACTION_VALID) != 0) { 2089009ea47eSEdward Tomasz Napierala switch (csio->tag_action) { 2090009ea47eSEdward Tomasz Napierala case MSG_HEAD_OF_Q_TAG: 2091009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_HOQ; 2092009ea47eSEdward Tomasz Napierala break; 2093009ea47eSEdward Tomasz Napierala case MSG_ORDERED_Q_TAG: 2094009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_ORDERED; 2095009ea47eSEdward Tomasz Napierala break; 2096009ea47eSEdward Tomasz Napierala case MSG_ACA_TASK: 2097009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_ACA; 2098009ea47eSEdward Tomasz Napierala break; 2099009ea47eSEdward Tomasz Napierala case MSG_SIMPLE_Q_TAG: 2100009ea47eSEdward Tomasz Napierala default: 2101009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_SIMPLE; 2102009ea47eSEdward Tomasz Napierala break; 2103009ea47eSEdward Tomasz Napierala } 2104462cf3baSAlexander Motin } else 2105462cf3baSAlexander Motin bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_UNTAGGED; 2106009ea47eSEdward Tomasz Napierala 2107a9f2f291SEdward Tomasz Napierala bhssc->bhssc_lun = htobe64(CAM_EXTLUN_BYTE_SWIZZLE(ccb->ccb_h.target_lun)); 2108009ea47eSEdward Tomasz Napierala bhssc->bhssc_initiator_task_tag = is->is_initiator_task_tag; 2109009ea47eSEdward Tomasz Napierala is->is_initiator_task_tag++; 2110009ea47eSEdward Tomasz Napierala bhssc->bhssc_expected_data_transfer_length = htonl(csio->dxfer_len); 2111009ea47eSEdward Tomasz Napierala KASSERT(csio->cdb_len <= sizeof(bhssc->bhssc_cdb), 2112009ea47eSEdward Tomasz Napierala ("unsupported CDB size %zd", (size_t)csio->cdb_len)); 2113009ea47eSEdward Tomasz Napierala 2114009ea47eSEdward Tomasz Napierala if (csio->ccb_h.flags & CAM_CDB_POINTER) 2115009ea47eSEdward Tomasz Napierala memcpy(&bhssc->bhssc_cdb, csio->cdb_io.cdb_ptr, csio->cdb_len); 2116009ea47eSEdward Tomasz Napierala else 2117009ea47eSEdward Tomasz Napierala memcpy(&bhssc->bhssc_cdb, csio->cdb_io.cdb_bytes, csio->cdb_len); 2118009ea47eSEdward Tomasz Napierala 2119aa75114cSAlexander Motin io = iscsi_outstanding_add(is, bhssc->bhssc_initiator_task_tag, ccb); 2120aa75114cSAlexander Motin if (io == NULL) { 2121009ea47eSEdward Tomasz Napierala icl_pdu_free(request); 2122009ea47eSEdward Tomasz Napierala if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 2123009ea47eSEdward Tomasz Napierala xpt_freeze_devq(ccb->ccb_h.path, 1); 2124009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 2125009ea47eSEdward Tomasz Napierala } 2126009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_RESRC_UNAVAIL | CAM_DEV_QFRZN; 2127009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2128009ea47eSEdward Tomasz Napierala return; 2129009ea47eSEdward Tomasz Napierala } 2130009ea47eSEdward Tomasz Napierala 2131009ea47eSEdward Tomasz Napierala if (is->is_immediate_data && 2132009ea47eSEdward Tomasz Napierala (csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT) { 2133009ea47eSEdward Tomasz Napierala len = csio->dxfer_len; 2134009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "adding %zd of immediate data", len); 2135009ea47eSEdward Tomasz Napierala if (len > is->is_first_burst_length) { 2136009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "len %zd -> %zd", len, is->is_first_burst_length); 2137009ea47eSEdward Tomasz Napierala len = is->is_first_burst_length; 2138009ea47eSEdward Tomasz Napierala } 2139009ea47eSEdward Tomasz Napierala 2140009ea47eSEdward Tomasz Napierala error = icl_pdu_append_data(request, csio->data_ptr, len, M_NOWAIT); 2141009ea47eSEdward Tomasz Napierala if (error != 0) { 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 iscsi_pdu_queue_locked(request); 2153009ea47eSEdward Tomasz Napierala } 2154009ea47eSEdward Tomasz Napierala 2155009ea47eSEdward Tomasz Napierala static void 2156009ea47eSEdward Tomasz Napierala iscsi_action(struct cam_sim *sim, union ccb *ccb) 2157009ea47eSEdward Tomasz Napierala { 2158009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 2159009ea47eSEdward Tomasz Napierala 2160009ea47eSEdward Tomasz Napierala is = cam_sim_softc(sim); 2161009ea47eSEdward Tomasz Napierala 2162009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 2163009ea47eSEdward Tomasz Napierala 2164f1f12e40SEdward Tomasz Napierala if (is->is_terminating || 2165f1f12e40SEdward Tomasz Napierala (is->is_connected == false && fail_on_disconnection)) { 2166009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_DEV_NOT_THERE; 2167009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2168009ea47eSEdward Tomasz Napierala return; 2169009ea47eSEdward Tomasz Napierala } 2170009ea47eSEdward Tomasz Napierala 2171009ea47eSEdward Tomasz Napierala switch (ccb->ccb_h.func_code) { 2172009ea47eSEdward Tomasz Napierala case XPT_PATH_INQ: 2173009ea47eSEdward Tomasz Napierala { 2174009ea47eSEdward Tomasz Napierala struct ccb_pathinq *cpi = &ccb->cpi; 2175009ea47eSEdward Tomasz Napierala 2176009ea47eSEdward Tomasz Napierala cpi->version_num = 1; 2177009ea47eSEdward Tomasz Napierala cpi->hba_inquiry = PI_TAG_ABLE; 2178009ea47eSEdward Tomasz Napierala cpi->target_sprt = 0; 2179a9f2f291SEdward Tomasz Napierala cpi->hba_misc = PIM_EXTLUNS; 2180009ea47eSEdward Tomasz Napierala cpi->hba_eng_cnt = 0; 2181009ea47eSEdward Tomasz Napierala cpi->max_target = 0; 2182*17cf3eb1SEdward Tomasz Napierala /* 2183*17cf3eb1SEdward Tomasz Napierala * Note that the variable below is only relevant for targets 2184*17cf3eb1SEdward Tomasz Napierala * that don't claim compliance with anything above SPC2, which 2185*17cf3eb1SEdward Tomasz Napierala * means they don't support REPORT_LUNS. 2186*17cf3eb1SEdward Tomasz Napierala */ 2187*17cf3eb1SEdward Tomasz Napierala cpi->max_lun = 255; 2188a9f2f291SEdward Tomasz Napierala cpi->initiator_id = ~0; 21897843bd03SEdward Tomasz Napierala strlcpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); 21907843bd03SEdward Tomasz Napierala strlcpy(cpi->hba_vid, "iSCSI", HBA_IDLEN); 21917843bd03SEdward Tomasz Napierala strlcpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); 2192009ea47eSEdward Tomasz Napierala cpi->unit_number = cam_sim_unit(sim); 2193009ea47eSEdward Tomasz Napierala cpi->bus_id = cam_sim_bus(sim); 2194009ea47eSEdward Tomasz Napierala cpi->base_transfer_speed = 150000; /* XXX */ 2195009ea47eSEdward Tomasz Napierala cpi->transport = XPORT_ISCSI; 2196009ea47eSEdward Tomasz Napierala cpi->transport_version = 0; 2197009ea47eSEdward Tomasz Napierala cpi->protocol = PROTO_SCSI; 2198009ea47eSEdward Tomasz Napierala cpi->protocol_version = SCSI_REV_SPC3; 2199009ea47eSEdward Tomasz Napierala cpi->maxio = MAXPHYS; 2200009ea47eSEdward Tomasz Napierala cpi->ccb_h.status = CAM_REQ_CMP; 2201009ea47eSEdward Tomasz Napierala break; 2202009ea47eSEdward Tomasz Napierala } 2203462cf3baSAlexander Motin case XPT_GET_TRAN_SETTINGS: 2204462cf3baSAlexander Motin { 2205462cf3baSAlexander Motin struct ccb_trans_settings *cts; 2206462cf3baSAlexander Motin struct ccb_trans_settings_scsi *scsi; 2207462cf3baSAlexander Motin 2208462cf3baSAlexander Motin cts = &ccb->cts; 2209462cf3baSAlexander Motin scsi = &cts->proto_specific.scsi; 2210462cf3baSAlexander Motin 2211462cf3baSAlexander Motin cts->protocol = PROTO_SCSI; 2212462cf3baSAlexander Motin cts->protocol_version = SCSI_REV_SPC3; 2213462cf3baSAlexander Motin cts->transport = XPORT_ISCSI; 2214462cf3baSAlexander Motin cts->transport_version = 0; 2215462cf3baSAlexander Motin scsi->valid = CTS_SCSI_VALID_TQ; 2216462cf3baSAlexander Motin scsi->flags = CTS_SCSI_FLAGS_TAG_ENB; 2217462cf3baSAlexander Motin cts->ccb_h.status = CAM_REQ_CMP; 2218462cf3baSAlexander Motin break; 2219462cf3baSAlexander Motin } 2220009ea47eSEdward Tomasz Napierala case XPT_CALC_GEOMETRY: 2221009ea47eSEdward Tomasz Napierala cam_calc_geometry(&ccb->ccg, /*extended*/1); 2222009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_REQ_CMP; 2223009ea47eSEdward Tomasz Napierala break; 2224009ea47eSEdward Tomasz Napierala #if 0 2225009ea47eSEdward Tomasz Napierala /* 2226009ea47eSEdward Tomasz Napierala * XXX: What's the point? 2227009ea47eSEdward Tomasz Napierala */ 2228009ea47eSEdward Tomasz Napierala case XPT_RESET_BUS: 2229009ea47eSEdward Tomasz Napierala case XPT_TERM_IO: 2230009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "faking success for reset, abort, or term_io"); 2231009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_REQ_CMP; 2232009ea47eSEdward Tomasz Napierala break; 2233009ea47eSEdward Tomasz Napierala #endif 2234aa75114cSAlexander Motin case XPT_ABORT: 2235aa75114cSAlexander Motin iscsi_action_abort(is, ccb); 2236aa75114cSAlexander Motin return; 2237009ea47eSEdward Tomasz Napierala case XPT_SCSI_IO: 2238009ea47eSEdward Tomasz Napierala iscsi_action_scsiio(is, ccb); 2239009ea47eSEdward Tomasz Napierala return; 2240009ea47eSEdward Tomasz Napierala default: 2241009ea47eSEdward Tomasz Napierala #if 0 2242009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "got unsupported code 0x%x", ccb->ccb_h.func_code); 2243009ea47eSEdward Tomasz Napierala #endif 2244009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_FUNC_NOTAVAIL; 2245009ea47eSEdward Tomasz Napierala break; 2246009ea47eSEdward Tomasz Napierala } 2247009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2248009ea47eSEdward Tomasz Napierala } 2249009ea47eSEdward Tomasz Napierala 2250009ea47eSEdward Tomasz Napierala static void 2251009ea47eSEdward Tomasz Napierala iscsi_poll(struct cam_sim *sim) 2252009ea47eSEdward Tomasz Napierala { 2253009ea47eSEdward Tomasz Napierala 2254009ea47eSEdward Tomasz Napierala KASSERT(0, ("%s: you're not supposed to be here", __func__)); 2255009ea47eSEdward Tomasz Napierala } 2256009ea47eSEdward Tomasz Napierala 2257009ea47eSEdward Tomasz Napierala static void 2258009ea47eSEdward Tomasz Napierala iscsi_shutdown(struct iscsi_softc *sc) 2259009ea47eSEdward Tomasz Napierala { 2260009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 2261009ea47eSEdward Tomasz Napierala 2262009ea47eSEdward Tomasz Napierala ISCSI_DEBUG("removing all sessions due to shutdown"); 2263009ea47eSEdward Tomasz Napierala 2264009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 2265009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) 2266009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 2267009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 2268009ea47eSEdward Tomasz Napierala } 2269009ea47eSEdward Tomasz Napierala 2270009ea47eSEdward Tomasz Napierala static int 2271009ea47eSEdward Tomasz Napierala iscsi_load(void) 2272009ea47eSEdward Tomasz Napierala { 2273009ea47eSEdward Tomasz Napierala int error; 2274009ea47eSEdward Tomasz Napierala 2275009ea47eSEdward Tomasz Napierala sc = malloc(sizeof(*sc), M_ISCSI, M_ZERO | M_WAITOK); 2276009ea47eSEdward Tomasz Napierala sx_init(&sc->sc_lock, "iscsi"); 2277009ea47eSEdward Tomasz Napierala TAILQ_INIT(&sc->sc_sessions); 2278009ea47eSEdward Tomasz Napierala cv_init(&sc->sc_cv, "iscsi_cv"); 2279009ea47eSEdward Tomasz Napierala 2280009ea47eSEdward Tomasz Napierala iscsi_outstanding_zone = uma_zcreate("iscsi_outstanding", 2281009ea47eSEdward Tomasz Napierala sizeof(struct iscsi_outstanding), NULL, NULL, NULL, NULL, 2282c28c09c1SEdward Tomasz Napierala UMA_ALIGN_PTR, 0); 2283009ea47eSEdward Tomasz Napierala 2284009ea47eSEdward Tomasz Napierala error = make_dev_p(MAKEDEV_CHECKNAME, &sc->sc_cdev, &iscsi_cdevsw, 2285009ea47eSEdward Tomasz Napierala NULL, UID_ROOT, GID_WHEEL, 0600, "iscsi"); 2286009ea47eSEdward Tomasz Napierala if (error != 0) { 2287009ea47eSEdward Tomasz Napierala ISCSI_WARN("failed to create device node, error %d", error); 2288009ea47eSEdward Tomasz Napierala return (error); 2289009ea47eSEdward Tomasz Napierala } 2290009ea47eSEdward Tomasz Napierala sc->sc_cdev->si_drv1 = sc; 2291009ea47eSEdward Tomasz Napierala 2292009ea47eSEdward Tomasz Napierala /* 2293c4dfe4abSEdward Tomasz Napierala * Note that this needs to get run before dashutdown(). Otherwise, 2294c4dfe4abSEdward Tomasz Napierala * when rebooting with iSCSI session with outstanding requests, 2295c4dfe4abSEdward Tomasz Napierala * but disconnected, dashutdown() will hang on cam_periph_runccb(). 2296009ea47eSEdward Tomasz Napierala */ 2297c4dfe4abSEdward Tomasz Napierala sc->sc_shutdown_eh = EVENTHANDLER_REGISTER(shutdown_post_sync, 2298c4dfe4abSEdward Tomasz Napierala iscsi_shutdown, sc, SHUTDOWN_PRI_FIRST); 2299009ea47eSEdward Tomasz Napierala 2300009ea47eSEdward Tomasz Napierala return (0); 2301009ea47eSEdward Tomasz Napierala } 2302009ea47eSEdward Tomasz Napierala 2303009ea47eSEdward Tomasz Napierala static int 2304009ea47eSEdward Tomasz Napierala iscsi_unload(void) 2305009ea47eSEdward Tomasz Napierala { 2306009ea47eSEdward Tomasz Napierala struct iscsi_session *is, *tmp; 2307009ea47eSEdward Tomasz Napierala 2308a667cf73SEdward Tomasz Napierala if (sc->sc_cdev != NULL) { 2309009ea47eSEdward Tomasz Napierala ISCSI_DEBUG("removing device node"); 2310009ea47eSEdward Tomasz Napierala destroy_dev(sc->sc_cdev); 2311009ea47eSEdward Tomasz Napierala ISCSI_DEBUG("device node removed"); 2312a667cf73SEdward Tomasz Napierala } 2313009ea47eSEdward Tomasz Napierala 2314a667cf73SEdward Tomasz Napierala if (sc->sc_shutdown_eh != NULL) 2315009ea47eSEdward Tomasz Napierala EVENTHANDLER_DEREGISTER(shutdown_post_sync, sc->sc_shutdown_eh); 2316009ea47eSEdward Tomasz Napierala 2317009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 2318009ea47eSEdward Tomasz Napierala TAILQ_FOREACH_SAFE(is, &sc->sc_sessions, is_next, tmp) 2319009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 2320009ea47eSEdward Tomasz Napierala while(!TAILQ_EMPTY(&sc->sc_sessions)) { 2321009ea47eSEdward Tomasz Napierala ISCSI_DEBUG("waiting for sessions to terminate"); 2322009ea47eSEdward Tomasz Napierala cv_wait(&sc->sc_cv, &sc->sc_lock); 2323009ea47eSEdward Tomasz Napierala } 2324009ea47eSEdward Tomasz Napierala ISCSI_DEBUG("all sessions terminated"); 2325009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 2326009ea47eSEdward Tomasz Napierala 2327009ea47eSEdward Tomasz Napierala uma_zdestroy(iscsi_outstanding_zone); 2328009ea47eSEdward Tomasz Napierala sx_destroy(&sc->sc_lock); 2329009ea47eSEdward Tomasz Napierala cv_destroy(&sc->sc_cv); 2330009ea47eSEdward Tomasz Napierala free(sc, M_ISCSI); 2331009ea47eSEdward Tomasz Napierala return (0); 2332009ea47eSEdward Tomasz Napierala } 2333009ea47eSEdward Tomasz Napierala 2334009ea47eSEdward Tomasz Napierala static int 2335009ea47eSEdward Tomasz Napierala iscsi_quiesce(void) 2336009ea47eSEdward Tomasz Napierala { 2337009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 2338009ea47eSEdward Tomasz Napierala if (!TAILQ_EMPTY(&sc->sc_sessions)) { 2339009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 2340009ea47eSEdward Tomasz Napierala return (EBUSY); 2341009ea47eSEdward Tomasz Napierala } 2342009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 2343009ea47eSEdward Tomasz Napierala return (0); 2344009ea47eSEdward Tomasz Napierala } 2345009ea47eSEdward Tomasz Napierala 2346009ea47eSEdward Tomasz Napierala static int 2347009ea47eSEdward Tomasz Napierala iscsi_modevent(module_t mod, int what, void *arg) 2348009ea47eSEdward Tomasz Napierala { 2349009ea47eSEdward Tomasz Napierala int error; 2350009ea47eSEdward Tomasz Napierala 2351009ea47eSEdward Tomasz Napierala switch (what) { 2352009ea47eSEdward Tomasz Napierala case MOD_LOAD: 2353009ea47eSEdward Tomasz Napierala error = iscsi_load(); 2354009ea47eSEdward Tomasz Napierala break; 2355009ea47eSEdward Tomasz Napierala case MOD_UNLOAD: 2356009ea47eSEdward Tomasz Napierala error = iscsi_unload(); 2357009ea47eSEdward Tomasz Napierala break; 2358009ea47eSEdward Tomasz Napierala case MOD_QUIESCE: 2359009ea47eSEdward Tomasz Napierala error = iscsi_quiesce(); 2360009ea47eSEdward Tomasz Napierala break; 2361009ea47eSEdward Tomasz Napierala default: 2362009ea47eSEdward Tomasz Napierala error = EINVAL; 2363009ea47eSEdward Tomasz Napierala break; 2364009ea47eSEdward Tomasz Napierala } 2365009ea47eSEdward Tomasz Napierala return (error); 2366009ea47eSEdward Tomasz Napierala } 2367009ea47eSEdward Tomasz Napierala 2368009ea47eSEdward Tomasz Napierala moduledata_t iscsi_data = { 2369009ea47eSEdward Tomasz Napierala "iscsi", 2370009ea47eSEdward Tomasz Napierala iscsi_modevent, 2371009ea47eSEdward Tomasz Napierala 0 2372009ea47eSEdward Tomasz Napierala }; 2373009ea47eSEdward Tomasz Napierala 2374009ea47eSEdward Tomasz Napierala DECLARE_MODULE(iscsi, iscsi_data, SI_SUB_DRIVERS, SI_ORDER_MIDDLE); 2375009ea47eSEdward Tomasz Napierala MODULE_DEPEND(iscsi, cam, 1, 1, 1); 2376009ea47eSEdward Tomasz Napierala MODULE_DEPEND(iscsi, icl, 1, 1, 1); 2377