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 * $FreeBSD$ 30009ea47eSEdward Tomasz Napierala */ 31009ea47eSEdward Tomasz Napierala 32009ea47eSEdward Tomasz Napierala #include <sys/param.h> 33009ea47eSEdward Tomasz Napierala #include <sys/condvar.h> 34009ea47eSEdward Tomasz Napierala #include <sys/conf.h> 35a9f2f291SEdward Tomasz Napierala #include <sys/endian.h> 36009ea47eSEdward Tomasz Napierala #include <sys/eventhandler.h> 37009ea47eSEdward Tomasz Napierala #include <sys/file.h> 38009ea47eSEdward Tomasz Napierala #include <sys/kernel.h> 39009ea47eSEdward Tomasz Napierala #include <sys/kthread.h> 40009ea47eSEdward Tomasz Napierala #include <sys/lock.h> 41009ea47eSEdward Tomasz Napierala #include <sys/malloc.h> 42009ea47eSEdward Tomasz Napierala #include <sys/mutex.h> 43009ea47eSEdward Tomasz Napierala #include <sys/module.h> 44009ea47eSEdward Tomasz Napierala #include <sys/sysctl.h> 45009ea47eSEdward Tomasz Napierala #include <sys/systm.h> 46009ea47eSEdward Tomasz Napierala #include <sys/sx.h> 47009ea47eSEdward Tomasz Napierala #include <vm/uma.h> 48009ea47eSEdward Tomasz Napierala 49009ea47eSEdward Tomasz Napierala #include <cam/cam.h> 50009ea47eSEdward Tomasz Napierala #include <cam/cam_ccb.h> 51009ea47eSEdward Tomasz Napierala #include <cam/cam_xpt.h> 52009ea47eSEdward Tomasz Napierala #include <cam/cam_debug.h> 53009ea47eSEdward Tomasz Napierala #include <cam/cam_sim.h> 54009ea47eSEdward Tomasz Napierala #include <cam/cam_xpt_sim.h> 55009ea47eSEdward Tomasz Napierala #include <cam/cam_xpt_periph.h> 56009ea47eSEdward Tomasz Napierala #include <cam/cam_periph.h> 57009ea47eSEdward Tomasz Napierala #include <cam/scsi/scsi_all.h> 58009ea47eSEdward Tomasz Napierala #include <cam/scsi/scsi_message.h> 59009ea47eSEdward Tomasz Napierala 60009ea47eSEdward Tomasz Napierala #include "iscsi_ioctl.h" 61009ea47eSEdward Tomasz Napierala #include "iscsi.h" 62009ea47eSEdward Tomasz Napierala #include "icl.h" 63009ea47eSEdward Tomasz Napierala #include "iscsi_proto.h" 64009ea47eSEdward Tomasz Napierala 65009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 66009ea47eSEdward Tomasz Napierala #include <sys/socketvar.h> 67009ea47eSEdward Tomasz Napierala #endif 68009ea47eSEdward Tomasz Napierala 692ebde326SEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 702ebde326SEdward Tomasz Napierala FEATURE(iscsi_kernel_proxy, "iSCSI initiator built with ICL_KERNEL_PROXY"); 712ebde326SEdward Tomasz Napierala #endif 722ebde326SEdward Tomasz Napierala 73009ea47eSEdward Tomasz Napierala /* 74009ea47eSEdward Tomasz Napierala * XXX: This is global so the iscsi_unload() can access it. 75009ea47eSEdward Tomasz Napierala * Think about how to do this properly. 76009ea47eSEdward Tomasz Napierala */ 77009ea47eSEdward Tomasz Napierala static struct iscsi_softc *sc; 78009ea47eSEdward Tomasz Napierala 79009ea47eSEdward Tomasz Napierala SYSCTL_NODE(_kern, OID_AUTO, iscsi, CTLFLAG_RD, 0, "iSCSI initiator"); 80009ea47eSEdward Tomasz Napierala static int debug = 1; 81009ea47eSEdward Tomasz Napierala TUNABLE_INT("kern.iscsi.debug", &debug); 82605a34b0SEdward Tomasz Napierala SYSCTL_INT(_kern_iscsi, OID_AUTO, debug, CTLFLAG_RWTUN, 831f6b2af2SAlexander Motin &debug, 0, "Enable debug messages"); 84009ea47eSEdward Tomasz Napierala static int ping_timeout = 5; 85009ea47eSEdward Tomasz Napierala TUNABLE_INT("kern.iscsi.ping_timeout", &ping_timeout); 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; 89009ea47eSEdward Tomasz Napierala TUNABLE_INT("kern.iscsi.iscsid_timeout", &iscsid_timeout); 90605a34b0SEdward Tomasz Napierala SYSCTL_INT(_kern_iscsi, OID_AUTO, iscsid_timeout, CTLFLAG_RWTUN, &iscsid_timeout, 911f6b2af2SAlexander Motin 0, "Time to wait for iscsid(8) to handle reconnection, in seconds"); 92009ea47eSEdward Tomasz Napierala static int login_timeout = 60; 93009ea47eSEdward Tomasz Napierala TUNABLE_INT("kern.iscsi.login_timeout", &login_timeout); 94605a34b0SEdward Tomasz Napierala SYSCTL_INT(_kern_iscsi, OID_AUTO, login_timeout, CTLFLAG_RWTUN, &login_timeout, 951f6b2af2SAlexander Motin 0, "Time to wait for iscsid(8) to finish Login Phase, in seconds"); 96009ea47eSEdward Tomasz Napierala static int maxtags = 255; 97009ea47eSEdward Tomasz Napierala TUNABLE_INT("kern.iscsi.maxtags", &maxtags); 98605a34b0SEdward Tomasz Napierala SYSCTL_INT(_kern_iscsi, OID_AUTO, maxtags, CTLFLAG_RWTUN, &maxtags, 991f6b2af2SAlexander Motin 0, "Max number of IO requests queued"); 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); 157009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_data_in(struct icl_pdu *response); 158009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_logout_response(struct icl_pdu *response); 159009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_r2t(struct icl_pdu *response); 160009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_async_message(struct icl_pdu *response); 161009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_reject(struct icl_pdu *response); 162009ea47eSEdward Tomasz Napierala static void iscsi_session_reconnect(struct iscsi_session *is); 163009ea47eSEdward Tomasz Napierala static void iscsi_session_terminate(struct iscsi_session *is); 164009ea47eSEdward Tomasz Napierala static void iscsi_action(struct cam_sim *sim, union ccb *ccb); 165009ea47eSEdward Tomasz Napierala static void iscsi_poll(struct cam_sim *sim); 166009ea47eSEdward Tomasz Napierala static struct iscsi_outstanding *iscsi_outstanding_find(struct iscsi_session *is, 167009ea47eSEdward Tomasz Napierala uint32_t initiator_task_tag); 168009ea47eSEdward Tomasz Napierala static int iscsi_outstanding_add(struct iscsi_session *is, 169009ea47eSEdward Tomasz Napierala uint32_t initiator_task_tag, union ccb *ccb); 170009ea47eSEdward Tomasz Napierala static void iscsi_outstanding_remove(struct iscsi_session *is, 171009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io); 172009ea47eSEdward Tomasz Napierala 173009ea47eSEdward Tomasz Napierala static bool 174009ea47eSEdward Tomasz Napierala iscsi_pdu_prepare(struct icl_pdu *request) 175009ea47eSEdward Tomasz Napierala { 176009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 177009ea47eSEdward Tomasz Napierala struct iscsi_bhs_scsi_command *bhssc; 178009ea47eSEdward Tomasz Napierala 179009ea47eSEdward Tomasz Napierala is = PDU_SESSION(request); 180009ea47eSEdward Tomasz Napierala 181009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 182009ea47eSEdward Tomasz Napierala 183009ea47eSEdward Tomasz Napierala /* 184009ea47eSEdward Tomasz Napierala * We're only using fields common for all the request 185009ea47eSEdward Tomasz Napierala * (initiator -> target) PDUs. 186009ea47eSEdward Tomasz Napierala */ 187009ea47eSEdward Tomasz Napierala bhssc = (struct iscsi_bhs_scsi_command *)request->ip_bhs; 188009ea47eSEdward Tomasz Napierala 189009ea47eSEdward Tomasz Napierala /* 190009ea47eSEdward Tomasz Napierala * Data-Out PDU does not contain CmdSN. 191009ea47eSEdward Tomasz Napierala */ 192009ea47eSEdward Tomasz Napierala if (bhssc->bhssc_opcode != ISCSI_BHS_OPCODE_SCSI_DATA_OUT) { 193009ea47eSEdward Tomasz Napierala if (is->is_cmdsn > is->is_maxcmdsn && 194009ea47eSEdward Tomasz Napierala (bhssc->bhssc_opcode & ISCSI_BHS_OPCODE_IMMEDIATE) == 0) { 195009ea47eSEdward Tomasz Napierala /* 196009ea47eSEdward Tomasz Napierala * Current MaxCmdSN prevents us from sending any more 197009ea47eSEdward Tomasz Napierala * SCSI Command PDUs to the target; postpone the PDU. 198009ea47eSEdward Tomasz Napierala * It will get resent by either iscsi_pdu_queue(), 199009ea47eSEdward Tomasz Napierala * or by maintenance thread. 200009ea47eSEdward Tomasz Napierala */ 201009ea47eSEdward Tomasz Napierala #if 0 202009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "postponing send, CmdSN %d, ExpCmdSN %d, MaxCmdSN %d, opcode 0x%x", 203009ea47eSEdward Tomasz Napierala is->is_cmdsn, is->is_expcmdsn, is->is_maxcmdsn, bhssc->bhssc_opcode); 204009ea47eSEdward Tomasz Napierala #endif 205009ea47eSEdward Tomasz Napierala return (true); 206009ea47eSEdward Tomasz Napierala } 207009ea47eSEdward Tomasz Napierala bhssc->bhssc_cmdsn = htonl(is->is_cmdsn); 208009ea47eSEdward Tomasz Napierala if ((bhssc->bhssc_opcode & ISCSI_BHS_OPCODE_IMMEDIATE) == 0) 209009ea47eSEdward Tomasz Napierala is->is_cmdsn++; 210009ea47eSEdward Tomasz Napierala } 211009ea47eSEdward Tomasz Napierala bhssc->bhssc_expstatsn = htonl(is->is_statsn + 1); 212009ea47eSEdward Tomasz Napierala 213009ea47eSEdward Tomasz Napierala return (false); 214009ea47eSEdward Tomasz Napierala } 215009ea47eSEdward Tomasz Napierala 216009ea47eSEdward Tomasz Napierala static void 217009ea47eSEdward Tomasz Napierala iscsi_session_send_postponed(struct iscsi_session *is) 218009ea47eSEdward Tomasz Napierala { 219009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 220009ea47eSEdward Tomasz Napierala bool postpone; 221009ea47eSEdward Tomasz Napierala 222009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 223009ea47eSEdward Tomasz Napierala 22416c158a5SEdward Tomasz Napierala while (!STAILQ_EMPTY(&is->is_postponed)) { 22516c158a5SEdward Tomasz Napierala request = STAILQ_FIRST(&is->is_postponed); 226009ea47eSEdward Tomasz Napierala postpone = iscsi_pdu_prepare(request); 227009ea47eSEdward Tomasz Napierala if (postpone) 228009ea47eSEdward Tomasz Napierala break; 22916c158a5SEdward Tomasz Napierala STAILQ_REMOVE_HEAD(&is->is_postponed, ip_next); 230009ea47eSEdward Tomasz Napierala icl_pdu_queue(request); 231009ea47eSEdward Tomasz Napierala } 232009ea47eSEdward Tomasz Napierala } 233009ea47eSEdward Tomasz Napierala 234009ea47eSEdward Tomasz Napierala static void 235009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(struct icl_pdu *request) 236009ea47eSEdward Tomasz Napierala { 237009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 238009ea47eSEdward Tomasz Napierala bool postpone; 239009ea47eSEdward Tomasz Napierala 240009ea47eSEdward Tomasz Napierala is = PDU_SESSION(request); 241009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 242009ea47eSEdward Tomasz Napierala iscsi_session_send_postponed(is); 243009ea47eSEdward Tomasz Napierala postpone = iscsi_pdu_prepare(request); 244009ea47eSEdward Tomasz Napierala if (postpone) { 24516c158a5SEdward Tomasz Napierala STAILQ_INSERT_TAIL(&is->is_postponed, request, ip_next); 246009ea47eSEdward Tomasz Napierala return; 247009ea47eSEdward Tomasz Napierala } 248009ea47eSEdward Tomasz Napierala icl_pdu_queue(request); 249009ea47eSEdward Tomasz Napierala } 250009ea47eSEdward Tomasz Napierala 251009ea47eSEdward Tomasz Napierala static void 252009ea47eSEdward Tomasz Napierala iscsi_pdu_queue(struct icl_pdu *request) 253009ea47eSEdward Tomasz Napierala { 254009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 255009ea47eSEdward Tomasz Napierala 256009ea47eSEdward Tomasz Napierala is = PDU_SESSION(request); 257009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 258009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(request); 259009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 260009ea47eSEdward Tomasz Napierala } 261009ea47eSEdward Tomasz Napierala 262009ea47eSEdward Tomasz Napierala static void 263009ea47eSEdward Tomasz Napierala iscsi_session_logout(struct iscsi_session *is) 264009ea47eSEdward Tomasz Napierala { 265009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 266009ea47eSEdward Tomasz Napierala struct iscsi_bhs_logout_request *bhslr; 267009ea47eSEdward Tomasz Napierala 268009ea47eSEdward Tomasz Napierala request = icl_pdu_new_bhs(is->is_conn, M_NOWAIT); 269009ea47eSEdward Tomasz Napierala if (request == NULL) 270009ea47eSEdward Tomasz Napierala return; 271009ea47eSEdward Tomasz Napierala 272009ea47eSEdward Tomasz Napierala bhslr = (struct iscsi_bhs_logout_request *)request->ip_bhs; 273009ea47eSEdward Tomasz Napierala bhslr->bhslr_opcode = ISCSI_BHS_OPCODE_LOGOUT_REQUEST; 274009ea47eSEdward Tomasz Napierala bhslr->bhslr_reason = BHSLR_REASON_CLOSE_SESSION; 275009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(request); 276009ea47eSEdward Tomasz Napierala } 277009ea47eSEdward Tomasz Napierala 278009ea47eSEdward Tomasz Napierala static void 279009ea47eSEdward Tomasz Napierala iscsi_session_terminate_tasks(struct iscsi_session *is, bool requeue) 280009ea47eSEdward Tomasz Napierala { 281009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io, *tmp; 282009ea47eSEdward Tomasz Napierala 283009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 284009ea47eSEdward Tomasz Napierala 285009ea47eSEdward Tomasz Napierala TAILQ_FOREACH_SAFE(io, &is->is_outstanding, io_next, tmp) { 286009ea47eSEdward Tomasz Napierala if (requeue) { 287009ea47eSEdward Tomasz Napierala io->io_ccb->ccb_h.status &= ~CAM_SIM_QUEUED; 288009ea47eSEdward Tomasz Napierala io->io_ccb->ccb_h.status |= CAM_REQUEUE_REQ; 289009ea47eSEdward Tomasz Napierala } else { 290009ea47eSEdward Tomasz Napierala io->io_ccb->ccb_h.status = CAM_REQ_ABORTED; 291009ea47eSEdward Tomasz Napierala } 292009ea47eSEdward Tomasz Napierala 293009ea47eSEdward Tomasz Napierala if ((io->io_ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 294009ea47eSEdward Tomasz Napierala xpt_freeze_devq(io->io_ccb->ccb_h.path, 1); 295009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 296009ea47eSEdward Tomasz Napierala } 297009ea47eSEdward Tomasz Napierala io->io_ccb->ccb_h.status |= CAM_DEV_QFRZN; 298009ea47eSEdward Tomasz Napierala xpt_done(io->io_ccb); 299009ea47eSEdward Tomasz Napierala iscsi_outstanding_remove(is, io); 300009ea47eSEdward Tomasz Napierala } 301009ea47eSEdward Tomasz Napierala } 302009ea47eSEdward Tomasz Napierala 303009ea47eSEdward Tomasz Napierala static void 304009ea47eSEdward Tomasz Napierala iscsi_maintenance_thread_reconnect(struct iscsi_session *is) 305009ea47eSEdward Tomasz Napierala { 306009ea47eSEdward Tomasz Napierala struct icl_pdu *pdu; 307009ea47eSEdward Tomasz Napierala 308009ea47eSEdward Tomasz Napierala icl_conn_shutdown(is->is_conn); 309009ea47eSEdward Tomasz Napierala icl_conn_close(is->is_conn); 310009ea47eSEdward Tomasz Napierala 311009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 312009ea47eSEdward Tomasz Napierala 313009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 314009ea47eSEdward Tomasz Napierala if (is->is_login_pdu != NULL) { 315009ea47eSEdward Tomasz Napierala icl_pdu_free(is->is_login_pdu); 316009ea47eSEdward Tomasz Napierala is->is_login_pdu = NULL; 317009ea47eSEdward Tomasz Napierala } 318009ea47eSEdward Tomasz Napierala cv_signal(&is->is_login_cv); 319009ea47eSEdward Tomasz Napierala #endif 320009ea47eSEdward Tomasz Napierala 321009ea47eSEdward Tomasz Napierala /* 322009ea47eSEdward Tomasz Napierala * Don't queue any new PDUs. 323009ea47eSEdward Tomasz Napierala */ 324009ea47eSEdward Tomasz Napierala if (is->is_sim != NULL && is->is_simq_frozen == false) { 325009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing"); 326009ea47eSEdward Tomasz Napierala xpt_freeze_simq(is->is_sim, 1); 327009ea47eSEdward Tomasz Napierala is->is_simq_frozen = true; 328009ea47eSEdward Tomasz Napierala } 329009ea47eSEdward Tomasz Napierala 330009ea47eSEdward Tomasz Napierala /* 331009ea47eSEdward Tomasz Napierala * Remove postponed PDUs. 332009ea47eSEdward Tomasz Napierala */ 33316c158a5SEdward Tomasz Napierala while (!STAILQ_EMPTY(&is->is_postponed)) { 33416c158a5SEdward Tomasz Napierala pdu = STAILQ_FIRST(&is->is_postponed); 33516c158a5SEdward Tomasz Napierala STAILQ_REMOVE_HEAD(&is->is_postponed, ip_next); 336009ea47eSEdward Tomasz Napierala icl_pdu_free(pdu); 337009ea47eSEdward Tomasz Napierala } 338009ea47eSEdward Tomasz Napierala 339009ea47eSEdward Tomasz Napierala /* 340009ea47eSEdward Tomasz Napierala * Terminate SCSI tasks, asking CAM to requeue them. 341009ea47eSEdward Tomasz Napierala */ 342009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "terminating tasks"); 343009ea47eSEdward Tomasz Napierala iscsi_session_terminate_tasks(is, true); 344009ea47eSEdward Tomasz Napierala 345009ea47eSEdward Tomasz Napierala KASSERT(TAILQ_EMPTY(&is->is_outstanding), 346009ea47eSEdward Tomasz Napierala ("destroying session with active tasks")); 34716c158a5SEdward Tomasz Napierala KASSERT(STAILQ_EMPTY(&is->is_postponed), 348009ea47eSEdward Tomasz Napierala ("destroying session with postponed PDUs")); 349009ea47eSEdward Tomasz Napierala 350009ea47eSEdward Tomasz Napierala /* 351009ea47eSEdward Tomasz Napierala * Request immediate reconnection from iscsid(8). 352009ea47eSEdward Tomasz Napierala */ 353009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "waking up iscsid(8)"); 354009ea47eSEdward Tomasz Napierala is->is_connected = false; 355009ea47eSEdward Tomasz Napierala is->is_reconnecting = false; 356009ea47eSEdward Tomasz Napierala is->is_login_phase = false; 357009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = true; 358009ea47eSEdward Tomasz Napierala strlcpy(is->is_reason, "Waiting for iscsid(8)", sizeof(is->is_reason)); 359009ea47eSEdward Tomasz Napierala is->is_timeout = 0; 360009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 361009ea47eSEdward Tomasz Napierala cv_signal(&is->is_softc->sc_cv); 362009ea47eSEdward Tomasz Napierala } 363009ea47eSEdward Tomasz Napierala 364009ea47eSEdward Tomasz Napierala static void 365009ea47eSEdward Tomasz Napierala iscsi_maintenance_thread_terminate(struct iscsi_session *is) 366009ea47eSEdward Tomasz Napierala { 367009ea47eSEdward Tomasz Napierala struct iscsi_softc *sc; 368009ea47eSEdward Tomasz Napierala struct icl_pdu *pdu; 369009ea47eSEdward Tomasz Napierala 370009ea47eSEdward Tomasz Napierala sc = is->is_softc; 371009ea47eSEdward Tomasz Napierala sx_xlock(&sc->sc_lock); 372009ea47eSEdward Tomasz Napierala TAILQ_REMOVE(&sc->sc_sessions, is, is_next); 373009ea47eSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 374009ea47eSEdward Tomasz Napierala 375009ea47eSEdward Tomasz Napierala icl_conn_close(is->is_conn); 376009ea47eSEdward Tomasz Napierala 377009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 378009ea47eSEdward Tomasz Napierala 379009ea47eSEdward Tomasz Napierala KASSERT(is->is_terminating, ("is_terminating == false")); 380009ea47eSEdward Tomasz Napierala 381009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 382009ea47eSEdward Tomasz Napierala if (is->is_login_pdu != NULL) { 383009ea47eSEdward Tomasz Napierala icl_pdu_free(is->is_login_pdu); 384009ea47eSEdward Tomasz Napierala is->is_login_pdu = NULL; 385009ea47eSEdward Tomasz Napierala } 386009ea47eSEdward Tomasz Napierala cv_signal(&is->is_login_cv); 387009ea47eSEdward Tomasz Napierala #endif 388009ea47eSEdward Tomasz Napierala 389009ea47eSEdward Tomasz Napierala /* 390009ea47eSEdward Tomasz Napierala * Don't queue any new PDUs. 391009ea47eSEdward Tomasz Napierala */ 392009ea47eSEdward Tomasz Napierala callout_drain(&is->is_callout); 393009ea47eSEdward Tomasz Napierala if (is->is_sim != NULL && is->is_simq_frozen == false) { 394009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing"); 395009ea47eSEdward Tomasz Napierala xpt_freeze_simq(is->is_sim, 1); 396009ea47eSEdward Tomasz Napierala is->is_simq_frozen = true; 397009ea47eSEdward Tomasz Napierala } 398009ea47eSEdward Tomasz Napierala 399009ea47eSEdward Tomasz Napierala /* 400009ea47eSEdward Tomasz Napierala * Remove postponed PDUs. 401009ea47eSEdward Tomasz Napierala */ 40216c158a5SEdward Tomasz Napierala while (!STAILQ_EMPTY(&is->is_postponed)) { 40316c158a5SEdward Tomasz Napierala pdu = STAILQ_FIRST(&is->is_postponed); 40416c158a5SEdward Tomasz Napierala STAILQ_REMOVE_HEAD(&is->is_postponed, ip_next); 405009ea47eSEdward Tomasz Napierala icl_pdu_free(pdu); 406009ea47eSEdward Tomasz Napierala } 407009ea47eSEdward Tomasz Napierala 408009ea47eSEdward Tomasz Napierala /* 409009ea47eSEdward Tomasz Napierala * Forcibly terminate SCSI tasks. 410009ea47eSEdward Tomasz Napierala */ 411009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "terminating tasks"); 412009ea47eSEdward Tomasz Napierala iscsi_session_terminate_tasks(is, false); 413009ea47eSEdward Tomasz Napierala 414009ea47eSEdward Tomasz Napierala /* 415009ea47eSEdward Tomasz Napierala * Deregister CAM. 416009ea47eSEdward Tomasz Napierala */ 417009ea47eSEdward Tomasz Napierala if (is->is_sim != NULL) { 418009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "deregistering SIM"); 419009ea47eSEdward Tomasz Napierala xpt_async(AC_LOST_DEVICE, is->is_path, NULL); 420009ea47eSEdward Tomasz Napierala 421009ea47eSEdward Tomasz Napierala if (is->is_simq_frozen) { 422009ea47eSEdward Tomasz Napierala xpt_release_simq(is->is_sim, 1); 423009ea47eSEdward Tomasz Napierala is->is_simq_frozen = false; 424009ea47eSEdward Tomasz Napierala } 425009ea47eSEdward Tomasz Napierala 426009ea47eSEdward Tomasz Napierala xpt_free_path(is->is_path); 427009ea47eSEdward Tomasz Napierala xpt_bus_deregister(cam_sim_path(is->is_sim)); 428009ea47eSEdward Tomasz Napierala cam_sim_free(is->is_sim, TRUE /*free_devq*/); 429009ea47eSEdward Tomasz Napierala is->is_sim = NULL; 430009ea47eSEdward Tomasz Napierala } 431009ea47eSEdward Tomasz Napierala 432009ea47eSEdward Tomasz Napierala KASSERT(TAILQ_EMPTY(&is->is_outstanding), 433009ea47eSEdward Tomasz Napierala ("destroying session with active tasks")); 43416c158a5SEdward Tomasz Napierala KASSERT(STAILQ_EMPTY(&is->is_postponed), 435009ea47eSEdward Tomasz Napierala ("destroying session with postponed PDUs")); 436009ea47eSEdward Tomasz Napierala 437009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 438009ea47eSEdward Tomasz Napierala 439009ea47eSEdward Tomasz Napierala icl_conn_free(is->is_conn); 440009ea47eSEdward Tomasz Napierala mtx_destroy(&is->is_lock); 441009ea47eSEdward Tomasz Napierala cv_destroy(&is->is_maintenance_cv); 442009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 443009ea47eSEdward Tomasz Napierala cv_destroy(&is->is_login_cv); 444009ea47eSEdward Tomasz Napierala #endif 445009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "terminated"); 446009ea47eSEdward Tomasz Napierala free(is, M_ISCSI); 447009ea47eSEdward Tomasz Napierala 448009ea47eSEdward Tomasz Napierala /* 449009ea47eSEdward Tomasz Napierala * The iscsi_unload() routine might be waiting. 450009ea47eSEdward Tomasz Napierala */ 451009ea47eSEdward Tomasz Napierala cv_signal(&sc->sc_cv); 452009ea47eSEdward Tomasz Napierala } 453009ea47eSEdward Tomasz Napierala 454009ea47eSEdward Tomasz Napierala static void 455009ea47eSEdward Tomasz Napierala iscsi_maintenance_thread(void *arg) 456009ea47eSEdward Tomasz Napierala { 457009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 458009ea47eSEdward Tomasz Napierala 459009ea47eSEdward Tomasz Napierala is = arg; 460009ea47eSEdward Tomasz Napierala 461009ea47eSEdward Tomasz Napierala for (;;) { 462009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 463009ea47eSEdward Tomasz Napierala if (is->is_reconnecting == false && 464009ea47eSEdward Tomasz Napierala is->is_terminating == false && 46516c158a5SEdward Tomasz Napierala STAILQ_EMPTY(&is->is_postponed)) 466009ea47eSEdward Tomasz Napierala cv_wait(&is->is_maintenance_cv, &is->is_lock); 467009ea47eSEdward Tomasz Napierala 468009ea47eSEdward Tomasz Napierala if (is->is_reconnecting) { 469009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 470009ea47eSEdward Tomasz Napierala iscsi_maintenance_thread_reconnect(is); 471009ea47eSEdward Tomasz Napierala continue; 472009ea47eSEdward Tomasz Napierala } 473009ea47eSEdward Tomasz Napierala 474009ea47eSEdward Tomasz Napierala if (is->is_terminating) { 475009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 476009ea47eSEdward Tomasz Napierala iscsi_maintenance_thread_terminate(is); 477009ea47eSEdward Tomasz Napierala kthread_exit(); 478009ea47eSEdward Tomasz Napierala return; 479009ea47eSEdward Tomasz Napierala } 480009ea47eSEdward Tomasz Napierala 481009ea47eSEdward Tomasz Napierala iscsi_session_send_postponed(is); 482009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 483009ea47eSEdward Tomasz Napierala } 484009ea47eSEdward Tomasz Napierala } 485009ea47eSEdward Tomasz Napierala 486009ea47eSEdward Tomasz Napierala static void 487009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(struct iscsi_session *is) 488009ea47eSEdward Tomasz Napierala { 489009ea47eSEdward Tomasz Napierala 490009ea47eSEdward Tomasz Napierala /* 491009ea47eSEdward Tomasz Napierala * XXX: We can't use locking here, because 492009ea47eSEdward Tomasz Napierala * it's being called from various contexts. 493009ea47eSEdward Tomasz Napierala * Hope it doesn't break anything. 494009ea47eSEdward Tomasz Napierala */ 495009ea47eSEdward Tomasz Napierala if (is->is_reconnecting) 496009ea47eSEdward Tomasz Napierala return; 497009ea47eSEdward Tomasz Napierala 498009ea47eSEdward Tomasz Napierala is->is_reconnecting = true; 499009ea47eSEdward Tomasz Napierala cv_signal(&is->is_maintenance_cv); 500009ea47eSEdward Tomasz Napierala } 501009ea47eSEdward Tomasz Napierala 502009ea47eSEdward Tomasz Napierala static void 503009ea47eSEdward Tomasz Napierala iscsi_session_terminate(struct iscsi_session *is) 504009ea47eSEdward Tomasz Napierala { 505009ea47eSEdward Tomasz Napierala if (is->is_terminating) 506009ea47eSEdward Tomasz Napierala return; 507009ea47eSEdward Tomasz Napierala 508009ea47eSEdward Tomasz Napierala is->is_terminating = true; 509009ea47eSEdward Tomasz Napierala 510009ea47eSEdward Tomasz Napierala #if 0 511009ea47eSEdward Tomasz Napierala iscsi_session_logout(is); 512009ea47eSEdward Tomasz Napierala #endif 513009ea47eSEdward Tomasz Napierala cv_signal(&is->is_maintenance_cv); 514009ea47eSEdward Tomasz Napierala } 515009ea47eSEdward Tomasz Napierala 516009ea47eSEdward Tomasz Napierala static void 517009ea47eSEdward Tomasz Napierala iscsi_callout(void *context) 518009ea47eSEdward Tomasz Napierala { 519009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 520009ea47eSEdward Tomasz Napierala struct iscsi_bhs_nop_out *bhsno; 521009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 522009ea47eSEdward Tomasz Napierala bool reconnect_needed = false; 523009ea47eSEdward Tomasz Napierala 524009ea47eSEdward Tomasz Napierala is = context; 525009ea47eSEdward Tomasz Napierala 526009ea47eSEdward Tomasz Napierala if (is->is_terminating) 527009ea47eSEdward Tomasz Napierala return; 528009ea47eSEdward Tomasz Napierala 529009ea47eSEdward Tomasz Napierala callout_schedule(&is->is_callout, 1 * hz); 530009ea47eSEdward Tomasz Napierala 531009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 532009ea47eSEdward Tomasz Napierala is->is_timeout++; 533009ea47eSEdward Tomasz Napierala 534009ea47eSEdward Tomasz Napierala if (is->is_waiting_for_iscsid) { 535009ea47eSEdward Tomasz Napierala if (is->is_timeout > iscsid_timeout) { 536009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "timed out waiting for iscsid(8) " 537009ea47eSEdward Tomasz Napierala "for %d seconds; reconnecting", 538009ea47eSEdward Tomasz Napierala is->is_timeout); 539009ea47eSEdward Tomasz Napierala reconnect_needed = true; 540009ea47eSEdward Tomasz Napierala } 541009ea47eSEdward Tomasz Napierala goto out; 542009ea47eSEdward Tomasz Napierala } 543009ea47eSEdward Tomasz Napierala 544009ea47eSEdward Tomasz Napierala if (is->is_login_phase) { 545009ea47eSEdward Tomasz Napierala if (is->is_timeout > login_timeout) { 546009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "login timed out after %d seconds; " 547009ea47eSEdward Tomasz Napierala "reconnecting", is->is_timeout); 548009ea47eSEdward Tomasz Napierala reconnect_needed = true; 549009ea47eSEdward Tomasz Napierala } 550009ea47eSEdward Tomasz Napierala goto out; 551009ea47eSEdward Tomasz Napierala } 552009ea47eSEdward Tomasz Napierala 553009ea47eSEdward Tomasz Napierala if (is->is_timeout >= ping_timeout) { 554009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "no ping reply (NOP-In) after %d seconds; " 555009ea47eSEdward Tomasz Napierala "reconnecting", ping_timeout); 556009ea47eSEdward Tomasz Napierala reconnect_needed = true; 557009ea47eSEdward Tomasz Napierala goto out; 558009ea47eSEdward Tomasz Napierala } 559009ea47eSEdward Tomasz Napierala 560009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 561009ea47eSEdward Tomasz Napierala 562009ea47eSEdward Tomasz Napierala /* 563009ea47eSEdward Tomasz Napierala * If the ping was reset less than one second ago - which means 564009ea47eSEdward Tomasz Napierala * that we've received some PDU during the last second - assume 565009ea47eSEdward Tomasz Napierala * the traffic flows correctly and don't bother sending a NOP-Out. 566009ea47eSEdward Tomasz Napierala * 567009ea47eSEdward Tomasz Napierala * (It's 2 - one for one second, and one for incrementing is_timeout 568009ea47eSEdward Tomasz Napierala * earlier in this routine.) 569009ea47eSEdward Tomasz Napierala */ 570009ea47eSEdward Tomasz Napierala if (is->is_timeout < 2) 571009ea47eSEdward Tomasz Napierala return; 572009ea47eSEdward Tomasz Napierala 57346aaea89SEdward Tomasz Napierala request = icl_pdu_new_bhs(is->is_conn, M_NOWAIT); 57446aaea89SEdward Tomasz Napierala if (request == NULL) { 57546aaea89SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate PDU"); 57646aaea89SEdward Tomasz Napierala return; 57746aaea89SEdward Tomasz Napierala } 578009ea47eSEdward Tomasz Napierala bhsno = (struct iscsi_bhs_nop_out *)request->ip_bhs; 579009ea47eSEdward Tomasz Napierala bhsno->bhsno_opcode = ISCSI_BHS_OPCODE_NOP_OUT | 580009ea47eSEdward Tomasz Napierala ISCSI_BHS_OPCODE_IMMEDIATE; 581009ea47eSEdward Tomasz Napierala bhsno->bhsno_flags = 0x80; 582009ea47eSEdward Tomasz Napierala bhsno->bhsno_target_transfer_tag = 0xffffffff; 583009ea47eSEdward Tomasz Napierala iscsi_pdu_queue(request); 584009ea47eSEdward Tomasz Napierala return; 585009ea47eSEdward Tomasz Napierala 586009ea47eSEdward Tomasz Napierala out: 587009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 588009ea47eSEdward Tomasz Napierala 589009ea47eSEdward Tomasz Napierala if (reconnect_needed) 590009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 591009ea47eSEdward Tomasz Napierala } 592009ea47eSEdward Tomasz Napierala 593009ea47eSEdward Tomasz Napierala static void 594009ea47eSEdward Tomasz Napierala iscsi_pdu_update_statsn(const struct icl_pdu *response) 595009ea47eSEdward Tomasz Napierala { 596009ea47eSEdward Tomasz Napierala const struct iscsi_bhs_data_in *bhsdi; 597009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 598009ea47eSEdward Tomasz Napierala uint32_t expcmdsn, maxcmdsn; 599009ea47eSEdward Tomasz Napierala 600009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 601009ea47eSEdward Tomasz Napierala 602009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 603009ea47eSEdward Tomasz Napierala 604009ea47eSEdward Tomasz Napierala /* 605009ea47eSEdward Tomasz Napierala * We're only using fields common for all the response 606009ea47eSEdward Tomasz Napierala * (target -> initiator) PDUs. 607009ea47eSEdward Tomasz Napierala */ 608009ea47eSEdward Tomasz Napierala bhsdi = (const struct iscsi_bhs_data_in *)response->ip_bhs; 609009ea47eSEdward Tomasz Napierala /* 610009ea47eSEdward Tomasz Napierala * Ok, I lied. In case of Data-In, "The fields StatSN, Status, 611009ea47eSEdward Tomasz Napierala * and Residual Count only have meaningful content if the S bit 612009ea47eSEdward Tomasz Napierala * is set to 1", so we also need to check the bit specific for 613009ea47eSEdward Tomasz Napierala * Data-In PDU. 614009ea47eSEdward Tomasz Napierala */ 615009ea47eSEdward Tomasz Napierala if (bhsdi->bhsdi_opcode != ISCSI_BHS_OPCODE_SCSI_DATA_IN || 616009ea47eSEdward Tomasz Napierala (bhsdi->bhsdi_flags & BHSDI_FLAGS_S) != 0) { 617009ea47eSEdward Tomasz Napierala if (ntohl(bhsdi->bhsdi_statsn) < is->is_statsn) { 618009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, 619009ea47eSEdward Tomasz Napierala "PDU StatSN %d >= session StatSN %d, opcode 0x%x", 620009ea47eSEdward Tomasz Napierala is->is_statsn, ntohl(bhsdi->bhsdi_statsn), 621009ea47eSEdward Tomasz Napierala bhsdi->bhsdi_opcode); 622009ea47eSEdward Tomasz Napierala } 623009ea47eSEdward Tomasz Napierala is->is_statsn = ntohl(bhsdi->bhsdi_statsn); 624009ea47eSEdward Tomasz Napierala } 625009ea47eSEdward Tomasz Napierala 626009ea47eSEdward Tomasz Napierala expcmdsn = ntohl(bhsdi->bhsdi_expcmdsn); 627009ea47eSEdward Tomasz Napierala maxcmdsn = ntohl(bhsdi->bhsdi_maxcmdsn); 628009ea47eSEdward Tomasz Napierala 629009ea47eSEdward Tomasz Napierala /* 630009ea47eSEdward Tomasz Napierala * XXX: Compare using Serial Arithmetic Sense. 631009ea47eSEdward Tomasz Napierala */ 632009ea47eSEdward Tomasz Napierala if (maxcmdsn + 1 < expcmdsn) { 633009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "PDU MaxCmdSN %d + 1 < PDU ExpCmdSN %d; ignoring", 634009ea47eSEdward Tomasz Napierala maxcmdsn, expcmdsn); 635009ea47eSEdward Tomasz Napierala } else { 636009ea47eSEdward Tomasz Napierala if (maxcmdsn > is->is_maxcmdsn) { 637009ea47eSEdward Tomasz Napierala is->is_maxcmdsn = maxcmdsn; 638009ea47eSEdward Tomasz Napierala 639009ea47eSEdward Tomasz Napierala /* 640009ea47eSEdward Tomasz Napierala * Command window increased; kick the maintanance thread 641009ea47eSEdward Tomasz Napierala * to send out postponed commands. 642009ea47eSEdward Tomasz Napierala */ 64316c158a5SEdward Tomasz Napierala if (!STAILQ_EMPTY(&is->is_postponed)) 644009ea47eSEdward Tomasz Napierala cv_signal(&is->is_maintenance_cv); 645009ea47eSEdward Tomasz Napierala } else if (maxcmdsn < is->is_maxcmdsn) { 646009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "PDU MaxCmdSN %d < session MaxCmdSN %d; ignoring", 647009ea47eSEdward Tomasz Napierala maxcmdsn, is->is_maxcmdsn); 648009ea47eSEdward Tomasz Napierala } 649009ea47eSEdward Tomasz Napierala 650009ea47eSEdward Tomasz Napierala if (expcmdsn > is->is_expcmdsn) { 651009ea47eSEdward Tomasz Napierala is->is_expcmdsn = expcmdsn; 652009ea47eSEdward Tomasz Napierala } else if (expcmdsn < is->is_expcmdsn) { 653009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "PDU ExpCmdSN %d < session ExpCmdSN %d; ignoring", 654009ea47eSEdward Tomasz Napierala expcmdsn, is->is_expcmdsn); 655009ea47eSEdward Tomasz Napierala } 656009ea47eSEdward Tomasz Napierala } 657009ea47eSEdward Tomasz Napierala 658009ea47eSEdward Tomasz Napierala /* 659009ea47eSEdward Tomasz Napierala * Every incoming PDU - not just NOP-In - resets the ping timer. 660009ea47eSEdward Tomasz Napierala * The purpose of the timeout is to reset the connection when it stalls; 661009ea47eSEdward Tomasz Napierala * we don't want this to happen when NOP-In or NOP-Out ends up delayed 662009ea47eSEdward Tomasz Napierala * in some queue. 663009ea47eSEdward Tomasz Napierala */ 664009ea47eSEdward Tomasz Napierala is->is_timeout = 0; 665009ea47eSEdward Tomasz Napierala } 666009ea47eSEdward Tomasz Napierala 667009ea47eSEdward Tomasz Napierala static void 668009ea47eSEdward Tomasz Napierala iscsi_receive_callback(struct icl_pdu *response) 669009ea47eSEdward Tomasz Napierala { 670009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 671009ea47eSEdward Tomasz Napierala 672009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 673009ea47eSEdward Tomasz Napierala 674009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 675009ea47eSEdward Tomasz Napierala 676009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 677009ea47eSEdward Tomasz Napierala if (is->is_login_phase) { 678009ea47eSEdward Tomasz Napierala if (is->is_login_pdu == NULL) 679009ea47eSEdward Tomasz Napierala is->is_login_pdu = response; 680009ea47eSEdward Tomasz Napierala else 681009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 682009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 683009ea47eSEdward Tomasz Napierala cv_signal(&is->is_login_cv); 684009ea47eSEdward Tomasz Napierala return; 685009ea47eSEdward Tomasz Napierala } 686009ea47eSEdward Tomasz Napierala #endif 687009ea47eSEdward Tomasz Napierala 688009ea47eSEdward Tomasz Napierala iscsi_pdu_update_statsn(response); 689009ea47eSEdward Tomasz Napierala 690009ea47eSEdward Tomasz Napierala /* 691009ea47eSEdward Tomasz Napierala * The handling routine is responsible for freeing the PDU 692009ea47eSEdward Tomasz Napierala * when it's no longer needed. 693009ea47eSEdward Tomasz Napierala */ 694009ea47eSEdward Tomasz Napierala switch (response->ip_bhs->bhs_opcode) { 695009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_NOP_IN: 696009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_nop_in(response); 697009ea47eSEdward Tomasz Napierala break; 698009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_SCSI_RESPONSE: 699009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_scsi_response(response); 700009ea47eSEdward Tomasz Napierala break; 701009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_SCSI_DATA_IN: 702009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_data_in(response); 703009ea47eSEdward Tomasz Napierala break; 704009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_LOGOUT_RESPONSE: 705009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_logout_response(response); 706009ea47eSEdward Tomasz Napierala break; 707009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_R2T: 708009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_r2t(response); 709009ea47eSEdward Tomasz Napierala break; 710009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_ASYNC_MESSAGE: 711009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_async_message(response); 712009ea47eSEdward Tomasz Napierala break; 713009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_REJECT: 714009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_reject(response); 715009ea47eSEdward Tomasz Napierala break; 716009ea47eSEdward Tomasz Napierala default: 717009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "received PDU with unsupported " 718009ea47eSEdward Tomasz Napierala "opcode 0x%x; reconnecting", 719009ea47eSEdward Tomasz Napierala response->ip_bhs->bhs_opcode); 720009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 721009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 722009ea47eSEdward Tomasz Napierala } 723009ea47eSEdward Tomasz Napierala 724009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 725009ea47eSEdward Tomasz Napierala } 726009ea47eSEdward Tomasz Napierala 727009ea47eSEdward Tomasz Napierala static void 728009ea47eSEdward Tomasz Napierala iscsi_error_callback(struct icl_conn *ic) 729009ea47eSEdward Tomasz Napierala { 730009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 731009ea47eSEdward Tomasz Napierala 732009ea47eSEdward Tomasz Napierala is = CONN_SESSION(ic); 733009ea47eSEdward Tomasz Napierala 734009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "connection error; reconnecting"); 735009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 736009ea47eSEdward Tomasz Napierala } 737009ea47eSEdward Tomasz Napierala 738009ea47eSEdward Tomasz Napierala static void 739009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_nop_in(struct icl_pdu *response) 740009ea47eSEdward Tomasz Napierala { 7411008ac5eSEdward Tomasz Napierala struct iscsi_session *is; 742009ea47eSEdward Tomasz Napierala struct iscsi_bhs_nop_out *bhsno; 743009ea47eSEdward Tomasz Napierala struct iscsi_bhs_nop_in *bhsni; 744009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 7451008ac5eSEdward Tomasz Napierala void *data = NULL; 7461008ac5eSEdward Tomasz Napierala size_t datasize; 7471008ac5eSEdward Tomasz Napierala int error; 748009ea47eSEdward Tomasz Napierala 7491008ac5eSEdward Tomasz Napierala is = PDU_SESSION(response); 750009ea47eSEdward Tomasz Napierala bhsni = (struct iscsi_bhs_nop_in *)response->ip_bhs; 751009ea47eSEdward Tomasz Napierala 752009ea47eSEdward Tomasz Napierala if (bhsni->bhsni_target_transfer_tag == 0xffffffff) { 753009ea47eSEdward Tomasz Napierala /* 754009ea47eSEdward Tomasz Napierala * Nothing to do; iscsi_pdu_update_statsn() already 755009ea47eSEdward Tomasz Napierala * zeroed the timeout. 756009ea47eSEdward Tomasz Napierala */ 757009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 758009ea47eSEdward Tomasz Napierala return; 759009ea47eSEdward Tomasz Napierala } 760009ea47eSEdward Tomasz Napierala 7611008ac5eSEdward Tomasz Napierala datasize = icl_pdu_data_segment_length(response); 7621008ac5eSEdward Tomasz Napierala if (datasize > 0) { 7631008ac5eSEdward Tomasz Napierala data = malloc(datasize, M_ISCSI, M_NOWAIT | M_ZERO); 7641008ac5eSEdward Tomasz Napierala if (data == NULL) { 7651008ac5eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate memory; " 7661008ac5eSEdward Tomasz Napierala "reconnecting"); 7671008ac5eSEdward Tomasz Napierala icl_pdu_free(response); 7681008ac5eSEdward Tomasz Napierala iscsi_session_reconnect(is); 7691008ac5eSEdward Tomasz Napierala return; 7701008ac5eSEdward Tomasz Napierala } 7711008ac5eSEdward Tomasz Napierala icl_pdu_get_data(response, 0, data, datasize); 7721008ac5eSEdward Tomasz Napierala } 7731008ac5eSEdward Tomasz Napierala 774009ea47eSEdward Tomasz Napierala request = icl_pdu_new_bhs(response->ip_conn, M_NOWAIT); 775009ea47eSEdward Tomasz Napierala if (request == NULL) { 7761008ac5eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate memory; " 7771008ac5eSEdward Tomasz Napierala "reconnecting"); 7781008ac5eSEdward Tomasz Napierala free(data, M_ISCSI); 779009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 7801008ac5eSEdward Tomasz Napierala iscsi_session_reconnect(is); 781009ea47eSEdward Tomasz Napierala return; 782009ea47eSEdward Tomasz Napierala } 783009ea47eSEdward Tomasz Napierala bhsno = (struct iscsi_bhs_nop_out *)request->ip_bhs; 784009ea47eSEdward Tomasz Napierala bhsno->bhsno_opcode = ISCSI_BHS_OPCODE_NOP_OUT | 785009ea47eSEdward Tomasz Napierala ISCSI_BHS_OPCODE_IMMEDIATE; 786009ea47eSEdward Tomasz Napierala bhsno->bhsno_flags = 0x80; 7871008ac5eSEdward Tomasz Napierala bhsno->bhsno_initiator_task_tag = 0xffffffff; 788009ea47eSEdward Tomasz Napierala bhsno->bhsno_target_transfer_tag = bhsni->bhsni_target_transfer_tag; 7891008ac5eSEdward Tomasz Napierala if (datasize > 0) { 7901008ac5eSEdward Tomasz Napierala error = icl_pdu_append_data(request, data, datasize, M_NOWAIT); 7911008ac5eSEdward Tomasz Napierala if (error != 0) { 7921008ac5eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate memory; " 7931008ac5eSEdward Tomasz Napierala "reconnecting"); 7941008ac5eSEdward Tomasz Napierala free(data, M_ISCSI); 7951008ac5eSEdward Tomasz Napierala icl_pdu_free(request); 7961008ac5eSEdward Tomasz Napierala icl_pdu_free(response); 7971008ac5eSEdward Tomasz Napierala iscsi_session_reconnect(is); 7981008ac5eSEdward Tomasz Napierala return; 7991008ac5eSEdward Tomasz Napierala } 8001008ac5eSEdward Tomasz Napierala free(data, M_ISCSI); 8011008ac5eSEdward Tomasz Napierala } 802009ea47eSEdward Tomasz Napierala 803009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 804009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(request); 805009ea47eSEdward Tomasz Napierala } 806009ea47eSEdward Tomasz Napierala 807009ea47eSEdward Tomasz Napierala static void 808009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_scsi_response(struct icl_pdu *response) 809009ea47eSEdward Tomasz Napierala { 810009ea47eSEdward Tomasz Napierala struct iscsi_bhs_scsi_response *bhssr; 811009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io; 812009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 813009ea47eSEdward Tomasz Napierala struct ccb_scsiio *csio; 814009ea47eSEdward Tomasz Napierala size_t data_segment_len; 815009ea47eSEdward Tomasz Napierala uint16_t sense_len; 816009ea47eSEdward Tomasz Napierala 817009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 818009ea47eSEdward Tomasz Napierala 819009ea47eSEdward Tomasz Napierala bhssr = (struct iscsi_bhs_scsi_response *)response->ip_bhs; 820009ea47eSEdward Tomasz Napierala io = iscsi_outstanding_find(is, bhssr->bhssr_initiator_task_tag); 821009ea47eSEdward Tomasz Napierala if (io == NULL) { 822009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "bad itt 0x%x", bhssr->bhssr_initiator_task_tag); 823009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 824009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 825009ea47eSEdward Tomasz Napierala return; 826009ea47eSEdward Tomasz Napierala } 827009ea47eSEdward Tomasz Napierala 828009ea47eSEdward Tomasz Napierala if (bhssr->bhssr_response != BHSSR_RESPONSE_COMMAND_COMPLETED) { 829009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "service response 0x%x", bhssr->bhssr_response); 830009ea47eSEdward Tomasz Napierala if ((io->io_ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 831009ea47eSEdward Tomasz Napierala xpt_freeze_devq(io->io_ccb->ccb_h.path, 1); 832009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 833009ea47eSEdward Tomasz Napierala } 834009ea47eSEdward Tomasz Napierala io->io_ccb->ccb_h.status = CAM_REQ_CMP_ERR | CAM_DEV_QFRZN; 835009ea47eSEdward Tomasz Napierala } else if (bhssr->bhssr_status == 0) { 836009ea47eSEdward Tomasz Napierala io->io_ccb->ccb_h.status = CAM_REQ_CMP; 837009ea47eSEdward Tomasz Napierala } else { 838009ea47eSEdward Tomasz Napierala if ((io->io_ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 839009ea47eSEdward Tomasz Napierala xpt_freeze_devq(io->io_ccb->ccb_h.path, 1); 840009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 841009ea47eSEdward Tomasz Napierala } 842009ea47eSEdward Tomasz Napierala io->io_ccb->ccb_h.status = CAM_SCSI_STATUS_ERROR | CAM_DEV_QFRZN; 843009ea47eSEdward Tomasz Napierala io->io_ccb->csio.scsi_status = bhssr->bhssr_status; 844009ea47eSEdward Tomasz Napierala } 845009ea47eSEdward Tomasz Napierala 846009ea47eSEdward Tomasz Napierala if (bhssr->bhssr_flags & BHSSR_FLAGS_RESIDUAL_OVERFLOW) { 847009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target indicated residual overflow"); 848009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 849009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 850009ea47eSEdward Tomasz Napierala return; 851009ea47eSEdward Tomasz Napierala } 852009ea47eSEdward Tomasz Napierala 853009ea47eSEdward Tomasz Napierala csio = &io->io_ccb->csio; 854009ea47eSEdward Tomasz Napierala 855009ea47eSEdward Tomasz Napierala data_segment_len = icl_pdu_data_segment_length(response); 856009ea47eSEdward Tomasz Napierala if (data_segment_len > 0) { 857009ea47eSEdward Tomasz Napierala if (data_segment_len < sizeof(sense_len)) { 858009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "truncated data segment (%zd bytes)", 859009ea47eSEdward Tomasz Napierala data_segment_len); 860009ea47eSEdward Tomasz Napierala if ((io->io_ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 861009ea47eSEdward Tomasz Napierala xpt_freeze_devq(io->io_ccb->ccb_h.path, 1); 862009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 863009ea47eSEdward Tomasz Napierala } 864009ea47eSEdward Tomasz Napierala io->io_ccb->ccb_h.status = CAM_REQ_CMP_ERR | CAM_DEV_QFRZN; 865009ea47eSEdward Tomasz Napierala goto out; 866009ea47eSEdward Tomasz Napierala } 867009ea47eSEdward Tomasz Napierala icl_pdu_get_data(response, 0, &sense_len, sizeof(sense_len)); 868009ea47eSEdward Tomasz Napierala sense_len = ntohs(sense_len); 869009ea47eSEdward Tomasz Napierala #if 0 870009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "sense_len %d, data len %zd", 871009ea47eSEdward Tomasz Napierala sense_len, data_segment_len); 872009ea47eSEdward Tomasz Napierala #endif 873009ea47eSEdward Tomasz Napierala if (sizeof(sense_len) + sense_len > data_segment_len) { 874009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "truncated data segment " 875009ea47eSEdward Tomasz Napierala "(%zd bytes, should be %zd)", 876009ea47eSEdward Tomasz Napierala data_segment_len, sizeof(sense_len) + sense_len); 877009ea47eSEdward Tomasz Napierala if ((io->io_ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 878009ea47eSEdward Tomasz Napierala xpt_freeze_devq(io->io_ccb->ccb_h.path, 1); 879009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 880009ea47eSEdward Tomasz Napierala } 881009ea47eSEdward Tomasz Napierala io->io_ccb->ccb_h.status = CAM_REQ_CMP_ERR | CAM_DEV_QFRZN; 882009ea47eSEdward Tomasz Napierala goto out; 883009ea47eSEdward Tomasz Napierala } else if (sizeof(sense_len) + sense_len < data_segment_len) 884009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "oversize data segment " 885009ea47eSEdward Tomasz Napierala "(%zd bytes, should be %zd)", 886009ea47eSEdward Tomasz Napierala data_segment_len, sizeof(sense_len) + sense_len); 887009ea47eSEdward Tomasz Napierala if (sense_len > csio->sense_len) { 888009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "truncating sense from %d to %d", 889009ea47eSEdward Tomasz Napierala sense_len, csio->sense_len); 890009ea47eSEdward Tomasz Napierala sense_len = csio->sense_len; 891009ea47eSEdward Tomasz Napierala } 892009ea47eSEdward Tomasz Napierala icl_pdu_get_data(response, sizeof(sense_len), &csio->sense_data, sense_len); 893009ea47eSEdward Tomasz Napierala csio->sense_resid = csio->sense_len - sense_len; 894009ea47eSEdward Tomasz Napierala io->io_ccb->ccb_h.status |= CAM_AUTOSNS_VALID; 895009ea47eSEdward Tomasz Napierala } 896009ea47eSEdward Tomasz Napierala 897009ea47eSEdward Tomasz Napierala out: 898009ea47eSEdward Tomasz Napierala if (bhssr->bhssr_flags & BHSSR_FLAGS_RESIDUAL_UNDERFLOW) 899009ea47eSEdward Tomasz Napierala csio->resid = ntohl(bhssr->bhssr_residual_count); 900009ea47eSEdward Tomasz Napierala 901009ea47eSEdward Tomasz Napierala if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) { 902009ea47eSEdward Tomasz Napierala KASSERT(io->io_received <= csio->dxfer_len, 903009ea47eSEdward Tomasz Napierala ("io->io_received > csio->dxfer_len")); 904009ea47eSEdward Tomasz Napierala if (io->io_received < csio->dxfer_len) { 905009ea47eSEdward Tomasz Napierala if (csio->resid != csio->dxfer_len - io->io_received) { 906009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "underflow mismatch: " 907009ea47eSEdward Tomasz Napierala "target indicates %d, we calculated %zd", 908009ea47eSEdward Tomasz Napierala csio->resid, 909009ea47eSEdward Tomasz Napierala csio->dxfer_len - io->io_received); 910009ea47eSEdward Tomasz Napierala } 911009ea47eSEdward Tomasz Napierala csio->resid = csio->dxfer_len - io->io_received; 912009ea47eSEdward Tomasz Napierala } 913009ea47eSEdward Tomasz Napierala } 914009ea47eSEdward Tomasz Napierala 915009ea47eSEdward Tomasz Napierala xpt_done(io->io_ccb); 916009ea47eSEdward Tomasz Napierala iscsi_outstanding_remove(is, io); 917009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 918009ea47eSEdward Tomasz Napierala } 919009ea47eSEdward Tomasz Napierala 920009ea47eSEdward Tomasz Napierala static void 921009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_data_in(struct icl_pdu *response) 922009ea47eSEdward Tomasz Napierala { 923009ea47eSEdward Tomasz Napierala struct iscsi_bhs_data_in *bhsdi; 924009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io; 925009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 926009ea47eSEdward Tomasz Napierala struct ccb_scsiio *csio; 927009ea47eSEdward Tomasz Napierala size_t data_segment_len; 928009ea47eSEdward Tomasz Napierala 929009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 930009ea47eSEdward Tomasz Napierala bhsdi = (struct iscsi_bhs_data_in *)response->ip_bhs; 931009ea47eSEdward Tomasz Napierala io = iscsi_outstanding_find(is, bhsdi->bhsdi_initiator_task_tag); 932009ea47eSEdward Tomasz Napierala if (io == NULL) { 933009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "bad itt 0x%x", bhsdi->bhsdi_initiator_task_tag); 934009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 935009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 936009ea47eSEdward Tomasz Napierala return; 937009ea47eSEdward Tomasz Napierala } 938009ea47eSEdward Tomasz Napierala 939009ea47eSEdward Tomasz Napierala data_segment_len = icl_pdu_data_segment_length(response); 940009ea47eSEdward Tomasz Napierala if (data_segment_len == 0) { 941009ea47eSEdward Tomasz Napierala /* 942009ea47eSEdward Tomasz Napierala * "The sending of 0 length data segments should be avoided, 943009ea47eSEdward Tomasz Napierala * but initiators and targets MUST be able to properly receive 944009ea47eSEdward Tomasz Napierala * 0 length data segments." 945009ea47eSEdward Tomasz Napierala */ 946009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 947009ea47eSEdward Tomasz Napierala return; 948009ea47eSEdward Tomasz Napierala } 949009ea47eSEdward Tomasz Napierala 950009ea47eSEdward Tomasz Napierala /* 951009ea47eSEdward Tomasz Napierala * We need to track this for security reasons - without it, malicious target 952009ea47eSEdward Tomasz Napierala * could respond to SCSI READ without sending Data-In PDUs, which would result 953009ea47eSEdward Tomasz Napierala * in read operation on the initiator side returning random kernel data. 954009ea47eSEdward Tomasz Napierala */ 955009ea47eSEdward Tomasz Napierala if (ntohl(bhsdi->bhsdi_buffer_offset) != io->io_received) { 956009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "data out of order; expected offset %zd, got %zd", 957009ea47eSEdward Tomasz Napierala io->io_received, (size_t)ntohl(bhsdi->bhsdi_buffer_offset)); 958009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 959009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 960009ea47eSEdward Tomasz Napierala return; 961009ea47eSEdward Tomasz Napierala } 962009ea47eSEdward Tomasz Napierala 963009ea47eSEdward Tomasz Napierala csio = &io->io_ccb->csio; 964009ea47eSEdward Tomasz Napierala 965d43c9ec1SEdward Tomasz Napierala if (io->io_received + data_segment_len > csio->dxfer_len) { 966009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "oversize data segment (%zd bytes " 967d43c9ec1SEdward Tomasz Napierala "at offset %zd, buffer is %d)", 968d43c9ec1SEdward Tomasz Napierala data_segment_len, io->io_received, csio->dxfer_len); 969009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 970009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 971009ea47eSEdward Tomasz Napierala return; 972009ea47eSEdward Tomasz Napierala } 973009ea47eSEdward Tomasz Napierala 974d43c9ec1SEdward Tomasz Napierala icl_pdu_get_data(response, 0, csio->data_ptr + io->io_received, data_segment_len); 975009ea47eSEdward Tomasz Napierala io->io_received += data_segment_len; 976009ea47eSEdward Tomasz Napierala 977009ea47eSEdward Tomasz Napierala /* 978009ea47eSEdward Tomasz Napierala * XXX: Check DataSN. 979009ea47eSEdward Tomasz Napierala * XXX: Check F. 980009ea47eSEdward Tomasz Napierala */ 98169647b7bSEdward Tomasz Napierala if ((bhsdi->bhsdi_flags & BHSDI_FLAGS_S) == 0) { 98269647b7bSEdward Tomasz Napierala /* 98369647b7bSEdward Tomasz Napierala * Nothing more to do. 98469647b7bSEdward Tomasz Napierala */ 98569647b7bSEdward Tomasz Napierala icl_pdu_free(response); 98669647b7bSEdward Tomasz Napierala return; 98769647b7bSEdward Tomasz Napierala } 98869647b7bSEdward Tomasz Napierala 989009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "got S flag; status 0x%x", bhsdi->bhsdi_status); 990009ea47eSEdward Tomasz Napierala if (bhsdi->bhsdi_status == 0) { 991009ea47eSEdward Tomasz Napierala io->io_ccb->ccb_h.status = CAM_REQ_CMP; 992009ea47eSEdward Tomasz Napierala } else { 993009ea47eSEdward Tomasz Napierala if ((io->io_ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 994009ea47eSEdward Tomasz Napierala xpt_freeze_devq(io->io_ccb->ccb_h.path, 1); 995009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 996009ea47eSEdward Tomasz Napierala } 997009ea47eSEdward Tomasz Napierala io->io_ccb->ccb_h.status = CAM_SCSI_STATUS_ERROR | CAM_DEV_QFRZN; 998009ea47eSEdward Tomasz Napierala csio->scsi_status = bhsdi->bhsdi_status; 999009ea47eSEdward Tomasz Napierala } 100069647b7bSEdward Tomasz Napierala 100169647b7bSEdward Tomasz Napierala if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) { 100269647b7bSEdward Tomasz Napierala KASSERT(io->io_received <= csio->dxfer_len, 100369647b7bSEdward Tomasz Napierala ("io->io_received > csio->dxfer_len")); 100469647b7bSEdward Tomasz Napierala if (io->io_received < csio->dxfer_len) { 100569647b7bSEdward Tomasz Napierala csio->resid = ntohl(bhsdi->bhsdi_residual_count); 100669647b7bSEdward Tomasz Napierala if (csio->resid != csio->dxfer_len - io->io_received) { 100769647b7bSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "underflow mismatch: " 100869647b7bSEdward Tomasz Napierala "target indicates %d, we calculated %zd", 100969647b7bSEdward Tomasz Napierala csio->resid, 101069647b7bSEdward Tomasz Napierala csio->dxfer_len - io->io_received); 101169647b7bSEdward Tomasz Napierala } 101269647b7bSEdward Tomasz Napierala csio->resid = csio->dxfer_len - io->io_received; 101369647b7bSEdward Tomasz Napierala } 1014009ea47eSEdward Tomasz Napierala } 1015009ea47eSEdward Tomasz Napierala 101669647b7bSEdward Tomasz Napierala xpt_done(io->io_ccb); 101769647b7bSEdward Tomasz Napierala iscsi_outstanding_remove(is, io); 1018009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1019009ea47eSEdward Tomasz Napierala } 1020009ea47eSEdward Tomasz Napierala 1021009ea47eSEdward Tomasz Napierala static void 1022009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_logout_response(struct icl_pdu *response) 1023009ea47eSEdward Tomasz Napierala { 1024009ea47eSEdward Tomasz Napierala 1025009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(PDU_SESSION(response), "logout response"); 1026009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1027009ea47eSEdward Tomasz Napierala } 1028009ea47eSEdward Tomasz Napierala 1029009ea47eSEdward Tomasz Napierala static void 1030009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_r2t(struct icl_pdu *response) 1031009ea47eSEdward Tomasz Napierala { 1032009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 1033009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1034009ea47eSEdward Tomasz Napierala struct iscsi_bhs_r2t *bhsr2t; 1035009ea47eSEdward Tomasz Napierala struct iscsi_bhs_data_out *bhsdo; 1036009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io; 1037009ea47eSEdward Tomasz Napierala struct ccb_scsiio *csio; 1038009ea47eSEdward Tomasz Napierala size_t off, len, total_len; 1039009ea47eSEdward Tomasz Napierala int error; 1040009ea47eSEdward Tomasz Napierala 1041009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 1042009ea47eSEdward Tomasz Napierala 1043009ea47eSEdward Tomasz Napierala bhsr2t = (struct iscsi_bhs_r2t *)response->ip_bhs; 1044009ea47eSEdward Tomasz Napierala io = iscsi_outstanding_find(is, bhsr2t->bhsr2t_initiator_task_tag); 1045009ea47eSEdward Tomasz Napierala if (io == NULL) { 1046009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "bad itt 0x%x; reconnecting", 1047009ea47eSEdward Tomasz Napierala bhsr2t->bhsr2t_initiator_task_tag); 1048009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1049009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1050009ea47eSEdward Tomasz Napierala return; 1051009ea47eSEdward Tomasz Napierala } 1052009ea47eSEdward Tomasz Napierala 1053009ea47eSEdward Tomasz Napierala csio = &io->io_ccb->csio; 1054009ea47eSEdward Tomasz Napierala 1055009ea47eSEdward Tomasz Napierala if ((csio->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_OUT) { 1056009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "received R2T for read command; reconnecting"); 1057009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1058009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1059009ea47eSEdward Tomasz Napierala return; 1060009ea47eSEdward Tomasz Napierala } 1061009ea47eSEdward Tomasz Napierala 1062009ea47eSEdward Tomasz Napierala /* 1063009ea47eSEdward Tomasz Napierala * XXX: Verify R2TSN. 1064009ea47eSEdward Tomasz Napierala */ 1065009ea47eSEdward Tomasz Napierala 1066009ea47eSEdward Tomasz Napierala io->io_datasn = 0; 1067d43c9ec1SEdward Tomasz Napierala 1068009ea47eSEdward Tomasz Napierala off = ntohl(bhsr2t->bhsr2t_buffer_offset); 1069d43c9ec1SEdward Tomasz Napierala if (off > csio->dxfer_len) { 1070d43c9ec1SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target requested invalid offset " 1071d43c9ec1SEdward Tomasz Napierala "%zd, buffer is is %d; reconnecting", off, csio->dxfer_len); 1072d43c9ec1SEdward Tomasz Napierala icl_pdu_free(response); 1073d43c9ec1SEdward Tomasz Napierala iscsi_session_reconnect(is); 1074d43c9ec1SEdward Tomasz Napierala return; 1075d43c9ec1SEdward Tomasz Napierala } 1076d43c9ec1SEdward Tomasz Napierala 1077009ea47eSEdward Tomasz Napierala total_len = ntohl(bhsr2t->bhsr2t_desired_data_transfer_length); 1078d43c9ec1SEdward Tomasz Napierala if (total_len == 0 || total_len > csio->dxfer_len) { 1079d43c9ec1SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target requested invalid length " 1080d43c9ec1SEdward Tomasz Napierala "%zd, buffer is %d; reconnecting", total_len, csio->dxfer_len); 1081d43c9ec1SEdward Tomasz Napierala icl_pdu_free(response); 1082d43c9ec1SEdward Tomasz Napierala iscsi_session_reconnect(is); 1083d43c9ec1SEdward Tomasz Napierala return; 1084d43c9ec1SEdward Tomasz Napierala } 1085009ea47eSEdward Tomasz Napierala 1086009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "r2t; off %zd, len %zd", off, total_len); 1087009ea47eSEdward Tomasz Napierala 1088009ea47eSEdward Tomasz Napierala for (;;) { 1089009ea47eSEdward Tomasz Napierala len = total_len; 1090009ea47eSEdward Tomasz Napierala 1091009ea47eSEdward Tomasz Napierala if (len > is->is_max_data_segment_length) 1092009ea47eSEdward Tomasz Napierala len = is->is_max_data_segment_length; 1093009ea47eSEdward Tomasz Napierala 1094009ea47eSEdward Tomasz Napierala if (off + len > csio->dxfer_len) { 1095d43c9ec1SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target requested invalid " 1096d43c9ec1SEdward Tomasz Napierala "length/offset %zd, buffer is %d; reconnecting", 1097009ea47eSEdward Tomasz Napierala off + len, csio->dxfer_len); 1098009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1099009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1100009ea47eSEdward Tomasz Napierala return; 1101009ea47eSEdward Tomasz Napierala } 1102009ea47eSEdward Tomasz Napierala 1103009ea47eSEdward Tomasz Napierala request = icl_pdu_new_bhs(response->ip_conn, M_NOWAIT); 1104009ea47eSEdward Tomasz Napierala if (request == NULL) { 1105009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1106009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1107009ea47eSEdward Tomasz Napierala return; 1108009ea47eSEdward Tomasz Napierala } 1109009ea47eSEdward Tomasz Napierala 1110009ea47eSEdward Tomasz Napierala bhsdo = (struct iscsi_bhs_data_out *)request->ip_bhs; 1111009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_opcode = ISCSI_BHS_OPCODE_SCSI_DATA_OUT; 1112009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_lun = bhsr2t->bhsr2t_lun; 1113009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_initiator_task_tag = 1114009ea47eSEdward Tomasz Napierala bhsr2t->bhsr2t_initiator_task_tag; 1115009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_target_transfer_tag = 1116009ea47eSEdward Tomasz Napierala bhsr2t->bhsr2t_target_transfer_tag; 1117009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_datasn = htonl(io->io_datasn++); 1118009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_buffer_offset = htonl(off); 1119d43c9ec1SEdward Tomasz Napierala error = icl_pdu_append_data(request, csio->data_ptr + off, len, 1120d43c9ec1SEdward Tomasz Napierala M_NOWAIT); 1121009ea47eSEdward Tomasz Napierala if (error != 0) { 1122d43c9ec1SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate memory; " 1123d43c9ec1SEdward Tomasz Napierala "reconnecting"); 1124009ea47eSEdward Tomasz Napierala icl_pdu_free(request); 1125009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1126009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1127009ea47eSEdward Tomasz Napierala return; 1128009ea47eSEdward Tomasz Napierala } 1129009ea47eSEdward Tomasz Napierala 1130009ea47eSEdward Tomasz Napierala off += len; 1131009ea47eSEdward Tomasz Napierala total_len -= len; 1132009ea47eSEdward Tomasz Napierala 1133009ea47eSEdward Tomasz Napierala if (total_len == 0) { 1134009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_flags |= BHSDO_FLAGS_F; 1135009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "setting F, off %zd", off); 1136009ea47eSEdward Tomasz Napierala } else { 1137009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "not finished, off %zd", off); 1138009ea47eSEdward Tomasz Napierala } 1139009ea47eSEdward Tomasz Napierala 1140009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(request); 1141009ea47eSEdward Tomasz Napierala 1142009ea47eSEdward Tomasz Napierala if (total_len == 0) 1143009ea47eSEdward Tomasz Napierala break; 1144009ea47eSEdward Tomasz Napierala } 1145009ea47eSEdward Tomasz Napierala 1146009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1147009ea47eSEdward Tomasz Napierala } 1148009ea47eSEdward Tomasz Napierala 1149009ea47eSEdward Tomasz Napierala static void 1150009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_async_message(struct icl_pdu *response) 1151009ea47eSEdward Tomasz Napierala { 1152009ea47eSEdward Tomasz Napierala struct iscsi_bhs_asynchronous_message *bhsam; 1153009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1154009ea47eSEdward Tomasz Napierala 1155009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 1156009ea47eSEdward Tomasz Napierala bhsam = (struct iscsi_bhs_asynchronous_message *)response->ip_bhs; 1157009ea47eSEdward Tomasz Napierala switch (bhsam->bhsam_async_event) { 1158009ea47eSEdward Tomasz Napierala case BHSAM_EVENT_TARGET_REQUESTS_LOGOUT: 1159009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target requests logout; removing session"); 1160009ea47eSEdward Tomasz Napierala iscsi_session_logout(is); 1161009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1162009ea47eSEdward Tomasz Napierala break; 1163009ea47eSEdward Tomasz Napierala case BHSAM_EVENT_TARGET_TERMINATES_CONNECTION: 1164009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target indicates it will drop drop the connection"); 1165009ea47eSEdward Tomasz Napierala break; 1166009ea47eSEdward Tomasz Napierala case BHSAM_EVENT_TARGET_TERMINATES_SESSION: 1167009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target indicates it will drop drop the session"); 1168009ea47eSEdward Tomasz Napierala break; 1169009ea47eSEdward Tomasz Napierala default: 1170009ea47eSEdward Tomasz Napierala /* 1171009ea47eSEdward Tomasz Napierala * XXX: Technically, we're obligated to also handle 1172009ea47eSEdward Tomasz Napierala * parameter renegotiation. 1173009ea47eSEdward Tomasz Napierala */ 1174009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "ignoring AsyncEvent %d", bhsam->bhsam_async_event); 1175009ea47eSEdward Tomasz Napierala break; 1176009ea47eSEdward Tomasz Napierala } 1177009ea47eSEdward Tomasz Napierala 1178009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1179009ea47eSEdward Tomasz Napierala } 1180009ea47eSEdward Tomasz Napierala 1181009ea47eSEdward Tomasz Napierala static void 1182009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_reject(struct icl_pdu *response) 1183009ea47eSEdward Tomasz Napierala { 1184009ea47eSEdward Tomasz Napierala struct iscsi_bhs_reject *bhsr; 1185009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1186009ea47eSEdward Tomasz Napierala 1187009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 1188009ea47eSEdward Tomasz Napierala bhsr = (struct iscsi_bhs_reject *)response->ip_bhs; 1189009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "received Reject PDU, reason 0x%x; protocol error?", 1190009ea47eSEdward Tomasz Napierala bhsr->bhsr_reason); 1191009ea47eSEdward Tomasz Napierala 1192009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1193009ea47eSEdward Tomasz Napierala } 1194009ea47eSEdward Tomasz Napierala 1195009ea47eSEdward Tomasz Napierala static int 1196009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_wait(struct iscsi_softc *sc, 1197009ea47eSEdward Tomasz Napierala struct iscsi_daemon_request *request) 1198009ea47eSEdward Tomasz Napierala { 1199009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1200009ea47eSEdward Tomasz Napierala int error; 1201009ea47eSEdward Tomasz Napierala 1202009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1203009ea47eSEdward Tomasz Napierala for (;;) { 1204009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1205*2be596adSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1206009ea47eSEdward Tomasz Napierala if (is->is_waiting_for_iscsid) 1207009ea47eSEdward Tomasz Napierala break; 1208*2be596adSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1209009ea47eSEdward Tomasz Napierala } 1210009ea47eSEdward Tomasz Napierala 1211009ea47eSEdward Tomasz Napierala if (is == NULL) { 1212009ea47eSEdward Tomasz Napierala /* 1213009ea47eSEdward Tomasz Napierala * No session requires attention from iscsid(8); wait. 1214009ea47eSEdward Tomasz Napierala */ 1215009ea47eSEdward Tomasz Napierala error = cv_wait_sig(&sc->sc_cv, &sc->sc_lock); 1216009ea47eSEdward Tomasz Napierala if (error != 0) { 1217009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1218009ea47eSEdward Tomasz Napierala return (error); 1219009ea47eSEdward Tomasz Napierala } 1220009ea47eSEdward Tomasz Napierala continue; 1221009ea47eSEdward Tomasz Napierala } 1222009ea47eSEdward Tomasz Napierala 1223009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = false; 1224009ea47eSEdward Tomasz Napierala is->is_login_phase = true; 1225009ea47eSEdward Tomasz Napierala is->is_reason[0] = '\0'; 1226009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1227009ea47eSEdward Tomasz Napierala 1228009ea47eSEdward Tomasz Napierala request->idr_session_id = is->is_id; 1229009ea47eSEdward Tomasz Napierala memcpy(&request->idr_conf, &is->is_conf, 1230009ea47eSEdward Tomasz Napierala sizeof(request->idr_conf)); 1231009ea47eSEdward Tomasz Napierala 1232009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1233009ea47eSEdward Tomasz Napierala return (0); 1234009ea47eSEdward Tomasz Napierala } 1235009ea47eSEdward Tomasz Napierala } 1236009ea47eSEdward Tomasz Napierala 1237009ea47eSEdward Tomasz Napierala static int 1238009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_handoff(struct iscsi_softc *sc, 1239009ea47eSEdward Tomasz Napierala struct iscsi_daemon_handoff *handoff) 1240009ea47eSEdward Tomasz Napierala { 1241009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1242009ea47eSEdward Tomasz Napierala int error; 1243009ea47eSEdward Tomasz Napierala 1244009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1245009ea47eSEdward Tomasz Napierala 1246009ea47eSEdward Tomasz Napierala /* 1247009ea47eSEdward Tomasz Napierala * Find the session to hand off socket to. 1248009ea47eSEdward Tomasz Napierala */ 1249009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1250009ea47eSEdward Tomasz Napierala if (is->is_id == handoff->idh_session_id) 1251009ea47eSEdward Tomasz Napierala break; 1252009ea47eSEdward Tomasz Napierala } 1253009ea47eSEdward Tomasz Napierala if (is == NULL) { 1254009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1255009ea47eSEdward Tomasz Napierala return (ESRCH); 1256009ea47eSEdward Tomasz Napierala } 1257009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1258009ea47eSEdward Tomasz Napierala if (is->is_conf.isc_discovery || is->is_terminating) { 1259009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1260009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1261009ea47eSEdward Tomasz Napierala return (EINVAL); 1262009ea47eSEdward Tomasz Napierala } 12630260023fSEdward Tomasz Napierala if (is->is_connected) { 12640260023fSEdward Tomasz Napierala /* 12650260023fSEdward Tomasz Napierala * This might have happened because another iscsid(8) 12660260023fSEdward Tomasz Napierala * instance handed off the connection in the meantime. 12670260023fSEdward Tomasz Napierala * Just return. 12680260023fSEdward Tomasz Napierala */ 12690260023fSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "handoff on already connected " 12700260023fSEdward Tomasz Napierala "session"); 12710260023fSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 12720260023fSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 12730260023fSEdward Tomasz Napierala return (EBUSY); 12740260023fSEdward Tomasz Napierala } 1275009ea47eSEdward Tomasz Napierala 1276009ea47eSEdward Tomasz Napierala strlcpy(is->is_target_alias, handoff->idh_target_alias, 1277009ea47eSEdward Tomasz Napierala sizeof(is->is_target_alias)); 1278009ea47eSEdward Tomasz Napierala memcpy(is->is_isid, handoff->idh_isid, sizeof(is->is_isid)); 1279009ea47eSEdward Tomasz Napierala is->is_statsn = handoff->idh_statsn; 1280009ea47eSEdward Tomasz Napierala is->is_initial_r2t = handoff->idh_initial_r2t; 1281009ea47eSEdward Tomasz Napierala is->is_immediate_data = handoff->idh_immediate_data; 1282009ea47eSEdward Tomasz Napierala is->is_max_data_segment_length = handoff->idh_max_data_segment_length; 1283009ea47eSEdward Tomasz Napierala is->is_max_burst_length = handoff->idh_max_burst_length; 1284009ea47eSEdward Tomasz Napierala is->is_first_burst_length = handoff->idh_first_burst_length; 1285009ea47eSEdward Tomasz Napierala 1286009ea47eSEdward Tomasz Napierala if (handoff->idh_header_digest == ISCSI_DIGEST_CRC32C) 1287009ea47eSEdward Tomasz Napierala is->is_conn->ic_header_crc32c = true; 1288009ea47eSEdward Tomasz Napierala else 1289009ea47eSEdward Tomasz Napierala is->is_conn->ic_header_crc32c = false; 1290009ea47eSEdward Tomasz Napierala if (handoff->idh_data_digest == ISCSI_DIGEST_CRC32C) 1291009ea47eSEdward Tomasz Napierala is->is_conn->ic_data_crc32c = true; 1292009ea47eSEdward Tomasz Napierala else 1293009ea47eSEdward Tomasz Napierala is->is_conn->ic_data_crc32c = false; 1294009ea47eSEdward Tomasz Napierala 1295009ea47eSEdward Tomasz Napierala is->is_cmdsn = 0; 1296cf23c509SEdward Tomasz Napierala is->is_expcmdsn = 0; 1297cf23c509SEdward Tomasz Napierala is->is_maxcmdsn = 0; 1298009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = false; 1299009ea47eSEdward Tomasz Napierala is->is_login_phase = false; 1300009ea47eSEdward Tomasz Napierala is->is_timeout = 0; 1301009ea47eSEdward Tomasz Napierala is->is_connected = true; 1302009ea47eSEdward Tomasz Napierala is->is_reason[0] = '\0'; 1303009ea47eSEdward Tomasz Napierala 1304009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1305009ea47eSEdward Tomasz Napierala 1306009ea47eSEdward Tomasz Napierala #ifndef ICL_KERNEL_PROXY 1307009ea47eSEdward Tomasz Napierala error = icl_conn_handoff(is->is_conn, handoff->idh_socket); 1308009ea47eSEdward Tomasz Napierala if (error != 0) { 1309009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1310009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1311009ea47eSEdward Tomasz Napierala return (error); 1312009ea47eSEdward Tomasz Napierala } 1313009ea47eSEdward Tomasz Napierala #endif 1314009ea47eSEdward Tomasz Napierala 1315009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1316009ea47eSEdward Tomasz Napierala 1317009ea47eSEdward Tomasz Napierala if (is->is_sim != NULL) { 1318009ea47eSEdward Tomasz Napierala /* 1319009ea47eSEdward Tomasz Napierala * When reconnecting, there already is SIM allocated for the session. 1320009ea47eSEdward Tomasz Napierala */ 1321009ea47eSEdward Tomasz Napierala KASSERT(is->is_simq_frozen, ("reconnect without frozen simq")); 1322009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1323009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "releasing"); 1324009ea47eSEdward Tomasz Napierala xpt_release_simq(is->is_sim, 1); 1325009ea47eSEdward Tomasz Napierala is->is_simq_frozen = false; 1326009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1327009ea47eSEdward Tomasz Napierala 1328009ea47eSEdward Tomasz Napierala } else { 1329009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1330009ea47eSEdward Tomasz Napierala is->is_devq = cam_simq_alloc(maxtags); 1331009ea47eSEdward Tomasz Napierala if (is->is_devq == NULL) { 1332009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate simq"); 1333009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1334009ea47eSEdward Tomasz Napierala return (ENOMEM); 1335009ea47eSEdward Tomasz Napierala } 1336009ea47eSEdward Tomasz Napierala 1337009ea47eSEdward Tomasz Napierala is->is_sim = cam_sim_alloc(iscsi_action, iscsi_poll, "iscsi", 1338009ea47eSEdward Tomasz Napierala is, is->is_id /* unit */, &is->is_lock, 1339009ea47eSEdward Tomasz Napierala maxtags, maxtags, is->is_devq); 1340009ea47eSEdward Tomasz Napierala if (is->is_sim == NULL) { 1341009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1342009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate SIM"); 1343009ea47eSEdward Tomasz Napierala cam_simq_free(is->is_devq); 1344009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1345009ea47eSEdward Tomasz Napierala return (ENOMEM); 1346009ea47eSEdward Tomasz Napierala } 1347009ea47eSEdward Tomasz Napierala 1348009ea47eSEdward Tomasz Napierala error = xpt_bus_register(is->is_sim, NULL, 0); 1349009ea47eSEdward Tomasz Napierala if (error != 0) { 1350009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1351009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to register bus"); 1352009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1353009ea47eSEdward Tomasz Napierala return (ENOMEM); 1354009ea47eSEdward Tomasz Napierala } 1355009ea47eSEdward Tomasz Napierala 1356009ea47eSEdward Tomasz Napierala error = xpt_create_path(&is->is_path, /*periph*/NULL, 1357009ea47eSEdward Tomasz Napierala cam_sim_path(is->is_sim), CAM_TARGET_WILDCARD, 1358009ea47eSEdward Tomasz Napierala CAM_LUN_WILDCARD); 1359009ea47eSEdward Tomasz Napierala if (error != CAM_REQ_CMP) { 1360009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1361009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to create path"); 1362009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1363009ea47eSEdward Tomasz Napierala return (ENOMEM); 1364009ea47eSEdward Tomasz Napierala } 1365009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1366009ea47eSEdward Tomasz Napierala } 1367009ea47eSEdward Tomasz Napierala 1368009ea47eSEdward Tomasz Napierala return (0); 1369009ea47eSEdward Tomasz Napierala } 1370009ea47eSEdward Tomasz Napierala 1371009ea47eSEdward Tomasz Napierala static int 1372009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_fail(struct iscsi_softc *sc, 1373009ea47eSEdward Tomasz Napierala struct iscsi_daemon_fail *fail) 1374009ea47eSEdward Tomasz Napierala { 1375009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1376009ea47eSEdward Tomasz Napierala 1377009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1378009ea47eSEdward Tomasz Napierala 1379009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1380009ea47eSEdward Tomasz Napierala if (is->is_id == fail->idf_session_id) 1381009ea47eSEdward Tomasz Napierala break; 1382009ea47eSEdward Tomasz Napierala } 1383009ea47eSEdward Tomasz Napierala if (is == NULL) { 1384009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1385009ea47eSEdward Tomasz Napierala return (ESRCH); 1386009ea47eSEdward Tomasz Napierala } 1387009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1388009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "iscsid(8) failed: %s", 1389009ea47eSEdward Tomasz Napierala fail->idf_reason); 1390009ea47eSEdward Tomasz Napierala strlcpy(is->is_reason, fail->idf_reason, sizeof(is->is_reason)); 1391009ea47eSEdward Tomasz Napierala //is->is_waiting_for_iscsid = false; 1392009ea47eSEdward Tomasz Napierala //is->is_login_phase = true; 1393009ea47eSEdward Tomasz Napierala //iscsi_session_reconnect(is); 1394009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1395009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1396009ea47eSEdward Tomasz Napierala 1397009ea47eSEdward Tomasz Napierala return (0); 1398009ea47eSEdward Tomasz Napierala } 1399009ea47eSEdward Tomasz Napierala 1400009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 1401009ea47eSEdward Tomasz Napierala static int 1402009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_connect(struct iscsi_softc *sc, 1403009ea47eSEdward Tomasz Napierala struct iscsi_daemon_connect *idc) 1404009ea47eSEdward Tomasz Napierala { 1405009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1406009ea47eSEdward Tomasz Napierala struct sockaddr *from_sa, *to_sa; 1407009ea47eSEdward Tomasz Napierala int error; 1408009ea47eSEdward Tomasz Napierala 1409009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1410009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1411009ea47eSEdward Tomasz Napierala if (is->is_id == idc->idc_session_id) 1412009ea47eSEdward Tomasz Napierala break; 1413009ea47eSEdward Tomasz Napierala } 1414009ea47eSEdward Tomasz Napierala if (is == NULL) { 1415009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1416009ea47eSEdward Tomasz Napierala return (ESRCH); 1417009ea47eSEdward Tomasz Napierala } 1418009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1419009ea47eSEdward Tomasz Napierala 1420009ea47eSEdward Tomasz Napierala if (idc->idc_from_addrlen > 0) { 1421009ea47eSEdward Tomasz Napierala error = getsockaddr(&from_sa, (void *)idc->idc_from_addr, idc->idc_from_addrlen); 1422009ea47eSEdward Tomasz Napierala if (error != 0) 1423009ea47eSEdward Tomasz Napierala return (error); 1424009ea47eSEdward Tomasz Napierala } else { 1425009ea47eSEdward Tomasz Napierala from_sa = NULL; 1426009ea47eSEdward Tomasz Napierala } 1427009ea47eSEdward Tomasz Napierala error = getsockaddr(&to_sa, (void *)idc->idc_to_addr, idc->idc_to_addrlen); 1428009ea47eSEdward Tomasz Napierala if (error != 0) { 1429009ea47eSEdward Tomasz Napierala free(from_sa, M_SONAME); 1430009ea47eSEdward Tomasz Napierala return (error); 1431009ea47eSEdward Tomasz Napierala } 1432009ea47eSEdward Tomasz Napierala 1433009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1434009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = false; 1435009ea47eSEdward Tomasz Napierala is->is_login_phase = true; 1436009ea47eSEdward Tomasz Napierala is->is_timeout = 0; 1437009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1438009ea47eSEdward Tomasz Napierala 1439009ea47eSEdward Tomasz Napierala error = icl_conn_connect(is->is_conn, idc->idc_iser, idc->idc_domain, 1440009ea47eSEdward Tomasz Napierala idc->idc_socktype, idc->idc_protocol, from_sa, to_sa); 1441009ea47eSEdward Tomasz Napierala free(from_sa, M_SONAME); 1442009ea47eSEdward Tomasz Napierala free(to_sa, M_SONAME); 1443009ea47eSEdward Tomasz Napierala 1444009ea47eSEdward Tomasz Napierala /* 1445009ea47eSEdward Tomasz Napierala * Digests are always disabled during login phase. 1446009ea47eSEdward Tomasz Napierala */ 1447009ea47eSEdward Tomasz Napierala is->is_conn->ic_header_crc32c = false; 1448009ea47eSEdward Tomasz Napierala is->is_conn->ic_data_crc32c = false; 1449009ea47eSEdward Tomasz Napierala 1450009ea47eSEdward Tomasz Napierala return (error); 1451009ea47eSEdward Tomasz Napierala } 1452009ea47eSEdward Tomasz Napierala 1453009ea47eSEdward Tomasz Napierala static int 1454009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_send(struct iscsi_softc *sc, 1455009ea47eSEdward Tomasz Napierala struct iscsi_daemon_send *ids) 1456009ea47eSEdward Tomasz Napierala { 1457009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1458009ea47eSEdward Tomasz Napierala struct icl_pdu *ip; 1459009ea47eSEdward Tomasz Napierala size_t datalen; 1460009ea47eSEdward Tomasz Napierala void *data; 1461009ea47eSEdward Tomasz Napierala int error; 1462009ea47eSEdward Tomasz Napierala 1463009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1464009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1465009ea47eSEdward Tomasz Napierala if (is->is_id == ids->ids_session_id) 1466009ea47eSEdward Tomasz Napierala break; 1467009ea47eSEdward Tomasz Napierala } 1468009ea47eSEdward Tomasz Napierala if (is == NULL) { 1469009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1470009ea47eSEdward Tomasz Napierala return (ESRCH); 1471009ea47eSEdward Tomasz Napierala } 1472009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1473009ea47eSEdward Tomasz Napierala 1474009ea47eSEdward Tomasz Napierala if (is->is_login_phase == false) 1475009ea47eSEdward Tomasz Napierala return (EBUSY); 1476009ea47eSEdward Tomasz Napierala 1477009ea47eSEdward Tomasz Napierala if (is->is_terminating || is->is_reconnecting) 1478009ea47eSEdward Tomasz Napierala return (EIO); 1479009ea47eSEdward Tomasz Napierala 1480009ea47eSEdward Tomasz Napierala datalen = ids->ids_data_segment_len; 1481009ea47eSEdward Tomasz Napierala if (datalen > ISCSI_MAX_DATA_SEGMENT_LENGTH) 1482009ea47eSEdward Tomasz Napierala return (EINVAL); 1483009ea47eSEdward Tomasz Napierala if (datalen > 0) { 1484009ea47eSEdward Tomasz Napierala data = malloc(datalen, M_ISCSI, M_WAITOK); 1485009ea47eSEdward Tomasz Napierala error = copyin(ids->ids_data_segment, data, datalen); 1486009ea47eSEdward Tomasz Napierala if (error != 0) { 1487009ea47eSEdward Tomasz Napierala free(data, M_ISCSI); 1488009ea47eSEdward Tomasz Napierala return (error); 1489009ea47eSEdward Tomasz Napierala } 1490009ea47eSEdward Tomasz Napierala } 1491009ea47eSEdward Tomasz Napierala 1492009ea47eSEdward Tomasz Napierala ip = icl_pdu_new_bhs(is->is_conn, M_WAITOK); 1493009ea47eSEdward Tomasz Napierala memcpy(ip->ip_bhs, ids->ids_bhs, sizeof(*ip->ip_bhs)); 1494009ea47eSEdward Tomasz Napierala if (datalen > 0) { 1495009ea47eSEdward Tomasz Napierala error = icl_pdu_append_data(ip, data, datalen, M_WAITOK); 1496009ea47eSEdward Tomasz Napierala KASSERT(error == 0, ("icl_pdu_append_data(..., M_WAITOK) failed")); 1497009ea47eSEdward Tomasz Napierala free(data, M_ISCSI); 1498009ea47eSEdward Tomasz Napierala } 1499009ea47eSEdward Tomasz Napierala icl_pdu_queue(ip); 1500009ea47eSEdward Tomasz Napierala 1501009ea47eSEdward Tomasz Napierala return (0); 1502009ea47eSEdward Tomasz Napierala } 1503009ea47eSEdward Tomasz Napierala 1504009ea47eSEdward Tomasz Napierala static int 1505009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_receive(struct iscsi_softc *sc, 1506009ea47eSEdward Tomasz Napierala struct iscsi_daemon_receive *idr) 1507009ea47eSEdward Tomasz Napierala { 1508009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1509009ea47eSEdward Tomasz Napierala struct icl_pdu *ip; 1510009ea47eSEdward Tomasz Napierala void *data; 1511009ea47eSEdward Tomasz Napierala 1512009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1513009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1514009ea47eSEdward Tomasz Napierala if (is->is_id == idr->idr_session_id) 1515009ea47eSEdward Tomasz Napierala break; 1516009ea47eSEdward Tomasz Napierala } 1517009ea47eSEdward Tomasz Napierala if (is == NULL) { 1518009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1519009ea47eSEdward Tomasz Napierala return (ESRCH); 1520009ea47eSEdward Tomasz Napierala } 1521009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1522009ea47eSEdward Tomasz Napierala 1523009ea47eSEdward Tomasz Napierala if (is->is_login_phase == false) 1524009ea47eSEdward Tomasz Napierala return (EBUSY); 1525009ea47eSEdward Tomasz Napierala 1526009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1527009ea47eSEdward Tomasz Napierala while (is->is_login_pdu == NULL && 1528009ea47eSEdward Tomasz Napierala is->is_terminating == false && 1529009ea47eSEdward Tomasz Napierala is->is_reconnecting == false) 1530009ea47eSEdward Tomasz Napierala cv_wait(&is->is_login_cv, &is->is_lock); 1531009ea47eSEdward Tomasz Napierala if (is->is_terminating || is->is_reconnecting) { 1532009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1533009ea47eSEdward Tomasz Napierala return (EIO); 1534009ea47eSEdward Tomasz Napierala } 1535009ea47eSEdward Tomasz Napierala ip = is->is_login_pdu; 1536009ea47eSEdward Tomasz Napierala is->is_login_pdu = NULL; 1537009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1538009ea47eSEdward Tomasz Napierala 1539009ea47eSEdward Tomasz Napierala if (ip->ip_data_len > idr->idr_data_segment_len) { 1540009ea47eSEdward Tomasz Napierala icl_pdu_free(ip); 1541009ea47eSEdward Tomasz Napierala return (EMSGSIZE); 1542009ea47eSEdward Tomasz Napierala } 1543009ea47eSEdward Tomasz Napierala 1544009ea47eSEdward Tomasz Napierala copyout(ip->ip_bhs, idr->idr_bhs, sizeof(*ip->ip_bhs)); 1545009ea47eSEdward Tomasz Napierala if (ip->ip_data_len > 0) { 1546009ea47eSEdward Tomasz Napierala data = malloc(ip->ip_data_len, M_ISCSI, M_WAITOK); 1547009ea47eSEdward Tomasz Napierala icl_pdu_get_data(ip, 0, data, ip->ip_data_len); 1548009ea47eSEdward Tomasz Napierala copyout(data, idr->idr_data_segment, ip->ip_data_len); 1549009ea47eSEdward Tomasz Napierala free(data, M_ISCSI); 1550009ea47eSEdward Tomasz Napierala } 1551009ea47eSEdward Tomasz Napierala 1552009ea47eSEdward Tomasz Napierala icl_pdu_free(ip); 1553009ea47eSEdward Tomasz Napierala 1554009ea47eSEdward Tomasz Napierala return (0); 1555009ea47eSEdward Tomasz Napierala } 1556009ea47eSEdward Tomasz Napierala #endif /* ICL_KERNEL_PROXY */ 1557009ea47eSEdward Tomasz Napierala 1558009ea47eSEdward Tomasz Napierala static void 1559009ea47eSEdward Tomasz Napierala iscsi_sanitize_session_conf(struct iscsi_session_conf *isc) 1560009ea47eSEdward Tomasz Napierala { 1561009ea47eSEdward Tomasz Napierala /* 1562009ea47eSEdward Tomasz Napierala * Just make sure all the fields are null-terminated. 1563009ea47eSEdward Tomasz Napierala * 1564009ea47eSEdward Tomasz Napierala * XXX: This is not particularly secure. We should 1565009ea47eSEdward Tomasz Napierala * create our own conf and then copy in relevant 1566009ea47eSEdward Tomasz Napierala * fields. 1567009ea47eSEdward Tomasz Napierala */ 1568009ea47eSEdward Tomasz Napierala isc->isc_initiator[ISCSI_NAME_LEN - 1] = '\0'; 1569009ea47eSEdward Tomasz Napierala isc->isc_initiator_addr[ISCSI_ADDR_LEN - 1] = '\0'; 1570009ea47eSEdward Tomasz Napierala isc->isc_initiator_alias[ISCSI_ALIAS_LEN - 1] = '\0'; 1571009ea47eSEdward Tomasz Napierala isc->isc_target[ISCSI_NAME_LEN - 1] = '\0'; 1572009ea47eSEdward Tomasz Napierala isc->isc_target_addr[ISCSI_ADDR_LEN - 1] = '\0'; 1573009ea47eSEdward Tomasz Napierala isc->isc_user[ISCSI_NAME_LEN - 1] = '\0'; 1574009ea47eSEdward Tomasz Napierala isc->isc_secret[ISCSI_SECRET_LEN - 1] = '\0'; 1575009ea47eSEdward Tomasz Napierala isc->isc_mutual_user[ISCSI_NAME_LEN - 1] = '\0'; 1576009ea47eSEdward Tomasz Napierala isc->isc_mutual_secret[ISCSI_SECRET_LEN - 1] = '\0'; 1577009ea47eSEdward Tomasz Napierala } 1578009ea47eSEdward Tomasz Napierala 1579009ea47eSEdward Tomasz Napierala static int 1580009ea47eSEdward Tomasz Napierala iscsi_ioctl_session_add(struct iscsi_softc *sc, struct iscsi_session_add *isa) 1581009ea47eSEdward Tomasz Napierala { 1582009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1583009ea47eSEdward Tomasz Napierala const struct iscsi_session *is2; 1584009ea47eSEdward Tomasz Napierala int error; 1585009ea47eSEdward Tomasz Napierala 1586009ea47eSEdward Tomasz Napierala iscsi_sanitize_session_conf(&isa->isa_conf); 1587009ea47eSEdward Tomasz Napierala 1588009ea47eSEdward Tomasz Napierala is = malloc(sizeof(*is), M_ISCSI, M_ZERO | M_WAITOK); 1589009ea47eSEdward Tomasz Napierala memcpy(&is->is_conf, &isa->isa_conf, sizeof(is->is_conf)); 1590009ea47eSEdward Tomasz Napierala 1591009ea47eSEdward Tomasz Napierala if (is->is_conf.isc_initiator[0] == '\0' || 15927843bd03SEdward Tomasz Napierala is->is_conf.isc_target_addr[0] == '\0') { 15937843bd03SEdward Tomasz Napierala free(is, M_ISCSI); 15947843bd03SEdward Tomasz Napierala return (EINVAL); 15957843bd03SEdward Tomasz Napierala } 15967843bd03SEdward Tomasz Napierala 15977843bd03SEdward Tomasz Napierala if ((is->is_conf.isc_discovery != 0 && is->is_conf.isc_target[0] != 0) || 15987843bd03SEdward Tomasz Napierala (is->is_conf.isc_discovery == 0 && is->is_conf.isc_target[0] == 0)) { 1599009ea47eSEdward Tomasz Napierala free(is, M_ISCSI); 1600009ea47eSEdward Tomasz Napierala return (EINVAL); 1601009ea47eSEdward Tomasz Napierala } 1602009ea47eSEdward Tomasz Napierala 1603009ea47eSEdward Tomasz Napierala sx_xlock(&sc->sc_lock); 1604009ea47eSEdward Tomasz Napierala 1605009ea47eSEdward Tomasz Napierala /* 1606009ea47eSEdward Tomasz Napierala * Prevent duplicates. 1607009ea47eSEdward Tomasz Napierala */ 1608009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is2, &sc->sc_sessions, is_next) { 16097843bd03SEdward Tomasz Napierala if (!!is->is_conf.isc_discovery != 16107843bd03SEdward Tomasz Napierala !!is2->is_conf.isc_discovery) 16117843bd03SEdward Tomasz Napierala continue; 16127843bd03SEdward Tomasz Napierala 16137843bd03SEdward Tomasz Napierala if (strcmp(is->is_conf.isc_target_addr, 16147843bd03SEdward Tomasz Napierala is2->is_conf.isc_target_addr) != 0) 16157843bd03SEdward Tomasz Napierala continue; 16167843bd03SEdward Tomasz Napierala 16177843bd03SEdward Tomasz Napierala if (is->is_conf.isc_discovery == 0 && 16187843bd03SEdward Tomasz Napierala strcmp(is->is_conf.isc_target, 16197843bd03SEdward Tomasz Napierala is2->is_conf.isc_target) != 0) 16207843bd03SEdward Tomasz Napierala continue; 16217843bd03SEdward Tomasz Napierala 1622009ea47eSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 16237843bd03SEdward Tomasz Napierala free(is, M_ISCSI); 1624009ea47eSEdward Tomasz Napierala return (EBUSY); 1625009ea47eSEdward Tomasz Napierala } 1626009ea47eSEdward Tomasz Napierala 1627ecba49ddSEdward Tomasz Napierala is->is_conn = icl_conn_new("iscsi", &is->is_lock); 1628009ea47eSEdward Tomasz Napierala is->is_conn->ic_receive = iscsi_receive_callback; 1629009ea47eSEdward Tomasz Napierala is->is_conn->ic_error = iscsi_error_callback; 1630009ea47eSEdward Tomasz Napierala is->is_conn->ic_prv0 = is; 1631009ea47eSEdward Tomasz Napierala TAILQ_INIT(&is->is_outstanding); 163216c158a5SEdward Tomasz Napierala STAILQ_INIT(&is->is_postponed); 1633009ea47eSEdward Tomasz Napierala mtx_init(&is->is_lock, "iscsi_lock", NULL, MTX_DEF); 1634009ea47eSEdward Tomasz Napierala cv_init(&is->is_maintenance_cv, "iscsi_mt"); 1635009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 1636009ea47eSEdward Tomasz Napierala cv_init(&is->is_login_cv, "iscsi_login"); 1637009ea47eSEdward Tomasz Napierala #endif 1638009ea47eSEdward Tomasz Napierala 1639009ea47eSEdward Tomasz Napierala is->is_softc = sc; 1640009ea47eSEdward Tomasz Napierala sc->sc_last_session_id++; 1641009ea47eSEdward Tomasz Napierala is->is_id = sc->sc_last_session_id; 1642009ea47eSEdward Tomasz Napierala callout_init(&is->is_callout, 1); 1643009ea47eSEdward Tomasz Napierala callout_reset(&is->is_callout, 1 * hz, iscsi_callout, is); 1644009ea47eSEdward Tomasz Napierala TAILQ_INSERT_TAIL(&sc->sc_sessions, is, is_next); 1645009ea47eSEdward Tomasz Napierala 1646009ea47eSEdward Tomasz Napierala error = kthread_add(iscsi_maintenance_thread, is, NULL, NULL, 0, 0, "iscsimt"); 1647009ea47eSEdward Tomasz Napierala if (error != 0) { 1648009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "kthread_add(9) failed with error %d", error); 1649009ea47eSEdward Tomasz Napierala return (error); 1650009ea47eSEdward Tomasz Napierala } 1651009ea47eSEdward Tomasz Napierala 1652009ea47eSEdward Tomasz Napierala /* 1653009ea47eSEdward Tomasz Napierala * Trigger immediate reconnection. 1654009ea47eSEdward Tomasz Napierala */ 1655*2be596adSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1656009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = true; 1657009ea47eSEdward Tomasz Napierala strlcpy(is->is_reason, "Waiting for iscsid(8)", sizeof(is->is_reason)); 1658*2be596adSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1659009ea47eSEdward Tomasz Napierala cv_signal(&sc->sc_cv); 1660009ea47eSEdward Tomasz Napierala 1661009ea47eSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 1662009ea47eSEdward Tomasz Napierala 1663009ea47eSEdward Tomasz Napierala return (0); 1664009ea47eSEdward Tomasz Napierala } 1665009ea47eSEdward Tomasz Napierala 1666009ea47eSEdward Tomasz Napierala static bool 1667009ea47eSEdward Tomasz Napierala iscsi_session_conf_matches(unsigned int id1, const struct iscsi_session_conf *c1, 1668009ea47eSEdward Tomasz Napierala unsigned int id2, const struct iscsi_session_conf *c2) 1669009ea47eSEdward Tomasz Napierala { 1670009ea47eSEdward Tomasz Napierala if (id2 == 0 && c2->isc_target[0] == '\0' && 1671009ea47eSEdward Tomasz Napierala c2->isc_target_addr[0] == '\0') 1672009ea47eSEdward Tomasz Napierala return (true); 1673009ea47eSEdward Tomasz Napierala if (id2 != 0 && id2 == id1) 1674009ea47eSEdward Tomasz Napierala return (true); 1675009ea47eSEdward Tomasz Napierala if (c2->isc_target[0] != '\0' && 1676009ea47eSEdward Tomasz Napierala strcmp(c1->isc_target, c2->isc_target) == 0) 1677009ea47eSEdward Tomasz Napierala return (true); 1678009ea47eSEdward Tomasz Napierala if (c2->isc_target_addr[0] != '\0' && 1679009ea47eSEdward Tomasz Napierala strcmp(c1->isc_target_addr, c2->isc_target_addr) == 0) 1680009ea47eSEdward Tomasz Napierala return (true); 1681009ea47eSEdward Tomasz Napierala return (false); 1682009ea47eSEdward Tomasz Napierala } 1683009ea47eSEdward Tomasz Napierala 1684009ea47eSEdward Tomasz Napierala static int 1685009ea47eSEdward Tomasz Napierala iscsi_ioctl_session_remove(struct iscsi_softc *sc, 1686009ea47eSEdward Tomasz Napierala struct iscsi_session_remove *isr) 1687009ea47eSEdward Tomasz Napierala { 1688009ea47eSEdward Tomasz Napierala struct iscsi_session *is, *tmp; 1689009ea47eSEdward Tomasz Napierala bool found = false; 1690009ea47eSEdward Tomasz Napierala 1691009ea47eSEdward Tomasz Napierala iscsi_sanitize_session_conf(&isr->isr_conf); 1692009ea47eSEdward Tomasz Napierala 1693009ea47eSEdward Tomasz Napierala sx_xlock(&sc->sc_lock); 1694009ea47eSEdward Tomasz Napierala TAILQ_FOREACH_SAFE(is, &sc->sc_sessions, is_next, tmp) { 1695009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1696009ea47eSEdward Tomasz Napierala if (iscsi_session_conf_matches(is->is_id, &is->is_conf, 1697009ea47eSEdward Tomasz Napierala isr->isr_session_id, &isr->isr_conf)) { 1698009ea47eSEdward Tomasz Napierala found = true; 1699009ea47eSEdward Tomasz Napierala iscsi_session_logout(is); 1700009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1701009ea47eSEdward Tomasz Napierala } 1702009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1703009ea47eSEdward Tomasz Napierala } 1704009ea47eSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 1705009ea47eSEdward Tomasz Napierala 1706009ea47eSEdward Tomasz Napierala if (!found) 1707009ea47eSEdward Tomasz Napierala return (ESRCH); 1708009ea47eSEdward Tomasz Napierala 1709009ea47eSEdward Tomasz Napierala return (0); 1710009ea47eSEdward Tomasz Napierala } 1711009ea47eSEdward Tomasz Napierala 1712009ea47eSEdward Tomasz Napierala static int 1713009ea47eSEdward Tomasz Napierala iscsi_ioctl_session_list(struct iscsi_softc *sc, struct iscsi_session_list *isl) 1714009ea47eSEdward Tomasz Napierala { 1715009ea47eSEdward Tomasz Napierala int error; 1716009ea47eSEdward Tomasz Napierala unsigned int i = 0; 1717009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1718009ea47eSEdward Tomasz Napierala struct iscsi_session_state iss; 1719009ea47eSEdward Tomasz Napierala 1720009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1721009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1722009ea47eSEdward Tomasz Napierala if (i >= isl->isl_nentries) { 1723009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1724009ea47eSEdward Tomasz Napierala return (EMSGSIZE); 1725009ea47eSEdward Tomasz Napierala } 1726009ea47eSEdward Tomasz Napierala memset(&iss, 0, sizeof(iss)); 1727009ea47eSEdward Tomasz Napierala memcpy(&iss.iss_conf, &is->is_conf, sizeof(iss.iss_conf)); 1728009ea47eSEdward Tomasz Napierala iss.iss_id = is->is_id; 1729009ea47eSEdward Tomasz Napierala strlcpy(iss.iss_target_alias, is->is_target_alias, sizeof(iss.iss_target_alias)); 1730009ea47eSEdward Tomasz Napierala strlcpy(iss.iss_reason, is->is_reason, sizeof(iss.iss_reason)); 1731009ea47eSEdward Tomasz Napierala 1732009ea47eSEdward Tomasz Napierala if (is->is_conn->ic_header_crc32c) 1733009ea47eSEdward Tomasz Napierala iss.iss_header_digest = ISCSI_DIGEST_CRC32C; 1734009ea47eSEdward Tomasz Napierala else 1735009ea47eSEdward Tomasz Napierala iss.iss_header_digest = ISCSI_DIGEST_NONE; 1736009ea47eSEdward Tomasz Napierala 1737009ea47eSEdward Tomasz Napierala if (is->is_conn->ic_data_crc32c) 1738009ea47eSEdward Tomasz Napierala iss.iss_data_digest = ISCSI_DIGEST_CRC32C; 1739009ea47eSEdward Tomasz Napierala else 1740009ea47eSEdward Tomasz Napierala iss.iss_data_digest = ISCSI_DIGEST_NONE; 1741009ea47eSEdward Tomasz Napierala 1742009ea47eSEdward Tomasz Napierala iss.iss_max_data_segment_length = is->is_max_data_segment_length; 1743009ea47eSEdward Tomasz Napierala iss.iss_immediate_data = is->is_immediate_data; 1744009ea47eSEdward Tomasz Napierala iss.iss_connected = is->is_connected; 1745009ea47eSEdward Tomasz Napierala 1746009ea47eSEdward Tomasz Napierala error = copyout(&iss, isl->isl_pstates + i, sizeof(iss)); 1747009ea47eSEdward Tomasz Napierala if (error != 0) { 1748009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1749009ea47eSEdward Tomasz Napierala return (error); 1750009ea47eSEdward Tomasz Napierala } 1751009ea47eSEdward Tomasz Napierala i++; 1752009ea47eSEdward Tomasz Napierala } 1753009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1754009ea47eSEdward Tomasz Napierala 1755009ea47eSEdward Tomasz Napierala isl->isl_nentries = i; 1756009ea47eSEdward Tomasz Napierala 1757009ea47eSEdward Tomasz Napierala return (0); 1758009ea47eSEdward Tomasz Napierala } 1759009ea47eSEdward Tomasz Napierala 1760009ea47eSEdward Tomasz Napierala static int 1761009ea47eSEdward Tomasz Napierala iscsi_ioctl(struct cdev *dev, u_long cmd, caddr_t arg, int mode, 1762009ea47eSEdward Tomasz Napierala struct thread *td) 1763009ea47eSEdward Tomasz Napierala { 1764009ea47eSEdward Tomasz Napierala struct iscsi_softc *sc; 1765009ea47eSEdward Tomasz Napierala 1766009ea47eSEdward Tomasz Napierala sc = dev->si_drv1; 1767009ea47eSEdward Tomasz Napierala 1768009ea47eSEdward Tomasz Napierala switch (cmd) { 1769009ea47eSEdward Tomasz Napierala case ISCSIDWAIT: 1770009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_wait(sc, 1771009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_request *)arg)); 1772009ea47eSEdward Tomasz Napierala case ISCSIDHANDOFF: 1773009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_handoff(sc, 1774009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_handoff *)arg)); 1775009ea47eSEdward Tomasz Napierala case ISCSIDFAIL: 1776009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_fail(sc, 1777009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_fail *)arg)); 1778009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 1779009ea47eSEdward Tomasz Napierala case ISCSIDCONNECT: 1780009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_connect(sc, 1781009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_connect *)arg)); 1782009ea47eSEdward Tomasz Napierala case ISCSIDSEND: 1783009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_send(sc, 1784009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_send *)arg)); 1785009ea47eSEdward Tomasz Napierala case ISCSIDRECEIVE: 1786009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_receive(sc, 1787009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_receive *)arg)); 1788009ea47eSEdward Tomasz Napierala #endif /* ICL_KERNEL_PROXY */ 1789009ea47eSEdward Tomasz Napierala case ISCSISADD: 1790009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_session_add(sc, 1791009ea47eSEdward Tomasz Napierala (struct iscsi_session_add *)arg)); 1792009ea47eSEdward Tomasz Napierala case ISCSISREMOVE: 1793009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_session_remove(sc, 1794009ea47eSEdward Tomasz Napierala (struct iscsi_session_remove *)arg)); 1795009ea47eSEdward Tomasz Napierala case ISCSISLIST: 1796009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_session_list(sc, 1797009ea47eSEdward Tomasz Napierala (struct iscsi_session_list *)arg)); 1798009ea47eSEdward Tomasz Napierala default: 1799009ea47eSEdward Tomasz Napierala return (EINVAL); 1800009ea47eSEdward Tomasz Napierala } 1801009ea47eSEdward Tomasz Napierala } 1802009ea47eSEdward Tomasz Napierala 1803009ea47eSEdward Tomasz Napierala static struct iscsi_outstanding * 1804009ea47eSEdward Tomasz Napierala iscsi_outstanding_find(struct iscsi_session *is, uint32_t initiator_task_tag) 1805009ea47eSEdward Tomasz Napierala { 1806009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io; 1807009ea47eSEdward Tomasz Napierala 1808009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 1809009ea47eSEdward Tomasz Napierala 1810009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(io, &is->is_outstanding, io_next) { 1811009ea47eSEdward Tomasz Napierala if (io->io_initiator_task_tag == initiator_task_tag) 1812009ea47eSEdward Tomasz Napierala return (io); 1813009ea47eSEdward Tomasz Napierala } 1814009ea47eSEdward Tomasz Napierala return (NULL); 1815009ea47eSEdward Tomasz Napierala } 1816009ea47eSEdward Tomasz Napierala 1817009ea47eSEdward Tomasz Napierala static int 1818009ea47eSEdward Tomasz Napierala iscsi_outstanding_add(struct iscsi_session *is, 1819009ea47eSEdward Tomasz Napierala uint32_t initiator_task_tag, union ccb *ccb) 1820009ea47eSEdward Tomasz Napierala { 1821009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io; 1822009ea47eSEdward Tomasz Napierala 1823009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 1824009ea47eSEdward Tomasz Napierala 1825009ea47eSEdward Tomasz Napierala KASSERT(iscsi_outstanding_find(is, initiator_task_tag) == NULL, 1826009ea47eSEdward Tomasz Napierala ("initiator_task_tag 0x%x already added", initiator_task_tag)); 1827009ea47eSEdward Tomasz Napierala 1828009ea47eSEdward Tomasz Napierala io = uma_zalloc(iscsi_outstanding_zone, M_NOWAIT | M_ZERO); 1829009ea47eSEdward Tomasz Napierala if (io == NULL) { 1830009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate %zd bytes", sizeof(*io)); 1831009ea47eSEdward Tomasz Napierala return (ENOMEM); 1832009ea47eSEdward Tomasz Napierala } 1833009ea47eSEdward Tomasz Napierala io->io_initiator_task_tag = initiator_task_tag; 1834009ea47eSEdward Tomasz Napierala io->io_ccb = ccb; 1835009ea47eSEdward Tomasz Napierala TAILQ_INSERT_TAIL(&is->is_outstanding, io, io_next); 1836009ea47eSEdward Tomasz Napierala return (0); 1837009ea47eSEdward Tomasz Napierala } 1838009ea47eSEdward Tomasz Napierala 1839009ea47eSEdward Tomasz Napierala static void 1840009ea47eSEdward Tomasz Napierala iscsi_outstanding_remove(struct iscsi_session *is, struct iscsi_outstanding *io) 1841009ea47eSEdward Tomasz Napierala { 1842009ea47eSEdward Tomasz Napierala 1843009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 1844009ea47eSEdward Tomasz Napierala 1845009ea47eSEdward Tomasz Napierala TAILQ_REMOVE(&is->is_outstanding, io, io_next); 1846009ea47eSEdward Tomasz Napierala uma_zfree(iscsi_outstanding_zone, io); 1847009ea47eSEdward Tomasz Napierala } 1848009ea47eSEdward Tomasz Napierala 1849009ea47eSEdward Tomasz Napierala static void 1850009ea47eSEdward Tomasz Napierala iscsi_action_scsiio(struct iscsi_session *is, union ccb *ccb) 1851009ea47eSEdward Tomasz Napierala { 1852009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 1853009ea47eSEdward Tomasz Napierala struct iscsi_bhs_scsi_command *bhssc; 1854009ea47eSEdward Tomasz Napierala struct ccb_scsiio *csio; 1855009ea47eSEdward Tomasz Napierala size_t len; 1856009ea47eSEdward Tomasz Napierala int error; 1857009ea47eSEdward Tomasz Napierala 1858009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 1859009ea47eSEdward Tomasz Napierala 1860009ea47eSEdward Tomasz Napierala #if 0 1861009ea47eSEdward Tomasz Napierala KASSERT(is->is_login_phase == false, ("%s called during Login Phase", __func__)); 1862009ea47eSEdward Tomasz Napierala #else 1863009ea47eSEdward Tomasz Napierala if (is->is_login_phase) { 1864009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "called during login phase"); 1865009ea47eSEdward Tomasz Napierala if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 1866009ea47eSEdward Tomasz Napierala xpt_freeze_devq(ccb->ccb_h.path, 1); 1867009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 1868009ea47eSEdward Tomasz Napierala } 1869009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_REQ_ABORTED | CAM_DEV_QFRZN; 1870009ea47eSEdward Tomasz Napierala xpt_done(ccb); 1871009ea47eSEdward Tomasz Napierala return; 1872009ea47eSEdward Tomasz Napierala } 1873009ea47eSEdward Tomasz Napierala #endif 1874009ea47eSEdward Tomasz Napierala 1875009ea47eSEdward Tomasz Napierala request = icl_pdu_new_bhs(is->is_conn, M_NOWAIT); 1876009ea47eSEdward Tomasz Napierala if (request == NULL) { 1877009ea47eSEdward Tomasz Napierala if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 1878009ea47eSEdward Tomasz Napierala xpt_freeze_devq(ccb->ccb_h.path, 1); 1879009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 1880009ea47eSEdward Tomasz Napierala } 1881009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_RESRC_UNAVAIL | CAM_DEV_QFRZN; 1882009ea47eSEdward Tomasz Napierala xpt_done(ccb); 1883009ea47eSEdward Tomasz Napierala return; 1884009ea47eSEdward Tomasz Napierala } 1885009ea47eSEdward Tomasz Napierala 1886009ea47eSEdward Tomasz Napierala csio = &ccb->csio; 1887009ea47eSEdward Tomasz Napierala bhssc = (struct iscsi_bhs_scsi_command *)request->ip_bhs; 1888009ea47eSEdward Tomasz Napierala bhssc->bhssc_opcode = ISCSI_BHS_OPCODE_SCSI_COMMAND; 1889009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_F; 1890009ea47eSEdward Tomasz Napierala switch (csio->ccb_h.flags & CAM_DIR_MASK) { 1891009ea47eSEdward Tomasz Napierala case CAM_DIR_IN: 1892009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_R; 1893009ea47eSEdward Tomasz Napierala break; 1894009ea47eSEdward Tomasz Napierala case CAM_DIR_OUT: 1895009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_W; 1896009ea47eSEdward Tomasz Napierala break; 1897009ea47eSEdward Tomasz Napierala } 1898009ea47eSEdward Tomasz Napierala 1899009ea47eSEdward Tomasz Napierala switch (csio->tag_action) { 1900009ea47eSEdward Tomasz Napierala case MSG_HEAD_OF_Q_TAG: 1901009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_HOQ; 1902009ea47eSEdward Tomasz Napierala break; 1903009ea47eSEdward Tomasz Napierala break; 1904009ea47eSEdward Tomasz Napierala case MSG_ORDERED_Q_TAG: 1905009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_ORDERED; 1906009ea47eSEdward Tomasz Napierala break; 1907009ea47eSEdward Tomasz Napierala case MSG_ACA_TASK: 1908009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_ACA; 1909009ea47eSEdward Tomasz Napierala break; 1910009ea47eSEdward Tomasz Napierala case CAM_TAG_ACTION_NONE: 1911009ea47eSEdward Tomasz Napierala case MSG_SIMPLE_Q_TAG: 1912009ea47eSEdward Tomasz Napierala default: 1913009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_SIMPLE; 1914009ea47eSEdward Tomasz Napierala break; 1915009ea47eSEdward Tomasz Napierala } 1916009ea47eSEdward Tomasz Napierala 1917a9f2f291SEdward Tomasz Napierala bhssc->bhssc_lun = htobe64(CAM_EXTLUN_BYTE_SWIZZLE(ccb->ccb_h.target_lun)); 1918009ea47eSEdward Tomasz Napierala bhssc->bhssc_initiator_task_tag = is->is_initiator_task_tag; 1919009ea47eSEdward Tomasz Napierala is->is_initiator_task_tag++; 1920009ea47eSEdward Tomasz Napierala bhssc->bhssc_expected_data_transfer_length = htonl(csio->dxfer_len); 1921009ea47eSEdward Tomasz Napierala KASSERT(csio->cdb_len <= sizeof(bhssc->bhssc_cdb), 1922009ea47eSEdward Tomasz Napierala ("unsupported CDB size %zd", (size_t)csio->cdb_len)); 1923009ea47eSEdward Tomasz Napierala 1924009ea47eSEdward Tomasz Napierala if (csio->ccb_h.flags & CAM_CDB_POINTER) 1925009ea47eSEdward Tomasz Napierala memcpy(&bhssc->bhssc_cdb, csio->cdb_io.cdb_ptr, csio->cdb_len); 1926009ea47eSEdward Tomasz Napierala else 1927009ea47eSEdward Tomasz Napierala memcpy(&bhssc->bhssc_cdb, csio->cdb_io.cdb_bytes, csio->cdb_len); 1928009ea47eSEdward Tomasz Napierala 1929009ea47eSEdward Tomasz Napierala error = iscsi_outstanding_add(is, bhssc->bhssc_initiator_task_tag, ccb); 1930009ea47eSEdward Tomasz Napierala if (error != 0) { 1931009ea47eSEdward Tomasz Napierala icl_pdu_free(request); 1932009ea47eSEdward Tomasz Napierala if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 1933009ea47eSEdward Tomasz Napierala xpt_freeze_devq(ccb->ccb_h.path, 1); 1934009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 1935009ea47eSEdward Tomasz Napierala } 1936009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_RESRC_UNAVAIL | CAM_DEV_QFRZN; 1937009ea47eSEdward Tomasz Napierala xpt_done(ccb); 1938009ea47eSEdward Tomasz Napierala return; 1939009ea47eSEdward Tomasz Napierala } 1940009ea47eSEdward Tomasz Napierala 1941009ea47eSEdward Tomasz Napierala if (is->is_immediate_data && 1942009ea47eSEdward Tomasz Napierala (csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT) { 1943009ea47eSEdward Tomasz Napierala len = csio->dxfer_len; 1944009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "adding %zd of immediate data", len); 1945009ea47eSEdward Tomasz Napierala if (len > is->is_first_burst_length) { 1946009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "len %zd -> %zd", len, is->is_first_burst_length); 1947009ea47eSEdward Tomasz Napierala len = is->is_first_burst_length; 1948009ea47eSEdward Tomasz Napierala } 1949009ea47eSEdward Tomasz Napierala 1950009ea47eSEdward Tomasz Napierala error = icl_pdu_append_data(request, csio->data_ptr, len, M_NOWAIT); 1951009ea47eSEdward Tomasz Napierala if (error != 0) { 1952009ea47eSEdward Tomasz Napierala icl_pdu_free(request); 1953009ea47eSEdward Tomasz Napierala if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 1954009ea47eSEdward Tomasz Napierala xpt_freeze_devq(ccb->ccb_h.path, 1); 1955009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 1956009ea47eSEdward Tomasz Napierala } 1957009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_RESRC_UNAVAIL | CAM_DEV_QFRZN; 1958009ea47eSEdward Tomasz Napierala xpt_done(ccb); 1959009ea47eSEdward Tomasz Napierala return; 1960009ea47eSEdward Tomasz Napierala } 1961009ea47eSEdward Tomasz Napierala } 1962009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(request); 1963009ea47eSEdward Tomasz Napierala } 1964009ea47eSEdward Tomasz Napierala 1965009ea47eSEdward Tomasz Napierala static void 1966009ea47eSEdward Tomasz Napierala iscsi_action(struct cam_sim *sim, union ccb *ccb) 1967009ea47eSEdward Tomasz Napierala { 1968009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1969009ea47eSEdward Tomasz Napierala 1970009ea47eSEdward Tomasz Napierala is = cam_sim_softc(sim); 1971009ea47eSEdward Tomasz Napierala 1972009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 1973009ea47eSEdward Tomasz Napierala 1974009ea47eSEdward Tomasz Napierala if (is->is_terminating) { 1975009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "called during termination"); 1976009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_DEV_NOT_THERE; 1977009ea47eSEdward Tomasz Napierala xpt_done(ccb); 1978009ea47eSEdward Tomasz Napierala return; 1979009ea47eSEdward Tomasz Napierala } 1980009ea47eSEdward Tomasz Napierala 1981009ea47eSEdward Tomasz Napierala switch (ccb->ccb_h.func_code) { 1982009ea47eSEdward Tomasz Napierala case XPT_PATH_INQ: 1983009ea47eSEdward Tomasz Napierala { 1984009ea47eSEdward Tomasz Napierala struct ccb_pathinq *cpi = &ccb->cpi; 1985009ea47eSEdward Tomasz Napierala 1986009ea47eSEdward Tomasz Napierala cpi->version_num = 1; 1987009ea47eSEdward Tomasz Napierala cpi->hba_inquiry = PI_TAG_ABLE; 1988009ea47eSEdward Tomasz Napierala cpi->target_sprt = 0; 1989a9f2f291SEdward Tomasz Napierala cpi->hba_misc = PIM_EXTLUNS; 1990009ea47eSEdward Tomasz Napierala cpi->hba_eng_cnt = 0; 1991009ea47eSEdward Tomasz Napierala cpi->max_target = 0; 1992a9f2f291SEdward Tomasz Napierala cpi->max_lun = 0; 1993a9f2f291SEdward Tomasz Napierala cpi->initiator_id = ~0; 19947843bd03SEdward Tomasz Napierala strlcpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); 19957843bd03SEdward Tomasz Napierala strlcpy(cpi->hba_vid, "iSCSI", HBA_IDLEN); 19967843bd03SEdward Tomasz Napierala strlcpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); 1997009ea47eSEdward Tomasz Napierala cpi->unit_number = cam_sim_unit(sim); 1998009ea47eSEdward Tomasz Napierala cpi->bus_id = cam_sim_bus(sim); 1999009ea47eSEdward Tomasz Napierala cpi->base_transfer_speed = 150000; /* XXX */ 2000009ea47eSEdward Tomasz Napierala cpi->transport = XPORT_ISCSI; 2001009ea47eSEdward Tomasz Napierala cpi->transport_version = 0; 2002009ea47eSEdward Tomasz Napierala cpi->protocol = PROTO_SCSI; 2003009ea47eSEdward Tomasz Napierala cpi->protocol_version = SCSI_REV_SPC3; 2004009ea47eSEdward Tomasz Napierala cpi->maxio = MAXPHYS; 2005009ea47eSEdward Tomasz Napierala cpi->ccb_h.status = CAM_REQ_CMP; 2006009ea47eSEdward Tomasz Napierala break; 2007009ea47eSEdward Tomasz Napierala } 2008009ea47eSEdward Tomasz Napierala case XPT_CALC_GEOMETRY: 2009009ea47eSEdward Tomasz Napierala cam_calc_geometry(&ccb->ccg, /*extended*/1); 2010009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_REQ_CMP; 2011009ea47eSEdward Tomasz Napierala break; 2012009ea47eSEdward Tomasz Napierala #if 0 2013009ea47eSEdward Tomasz Napierala /* 2014009ea47eSEdward Tomasz Napierala * XXX: What's the point? 2015009ea47eSEdward Tomasz Napierala */ 2016009ea47eSEdward Tomasz Napierala case XPT_RESET_BUS: 2017009ea47eSEdward Tomasz Napierala case XPT_ABORT: 2018009ea47eSEdward Tomasz Napierala case XPT_TERM_IO: 2019009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "faking success for reset, abort, or term_io"); 2020009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_REQ_CMP; 2021009ea47eSEdward Tomasz Napierala break; 2022009ea47eSEdward Tomasz Napierala #endif 2023009ea47eSEdward Tomasz Napierala case XPT_SCSI_IO: 2024009ea47eSEdward Tomasz Napierala iscsi_action_scsiio(is, ccb); 2025009ea47eSEdward Tomasz Napierala return; 2026009ea47eSEdward Tomasz Napierala default: 2027009ea47eSEdward Tomasz Napierala #if 0 2028009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "got unsupported code 0x%x", ccb->ccb_h.func_code); 2029009ea47eSEdward Tomasz Napierala #endif 2030009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_FUNC_NOTAVAIL; 2031009ea47eSEdward Tomasz Napierala break; 2032009ea47eSEdward Tomasz Napierala } 2033009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2034009ea47eSEdward Tomasz Napierala } 2035009ea47eSEdward Tomasz Napierala 2036009ea47eSEdward Tomasz Napierala static void 2037009ea47eSEdward Tomasz Napierala iscsi_poll(struct cam_sim *sim) 2038009ea47eSEdward Tomasz Napierala { 2039009ea47eSEdward Tomasz Napierala 2040009ea47eSEdward Tomasz Napierala KASSERT(0, ("%s: you're not supposed to be here", __func__)); 2041009ea47eSEdward Tomasz Napierala } 2042009ea47eSEdward Tomasz Napierala 2043009ea47eSEdward Tomasz Napierala static void 2044009ea47eSEdward Tomasz Napierala iscsi_shutdown(struct iscsi_softc *sc) 2045009ea47eSEdward Tomasz Napierala { 2046009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 2047009ea47eSEdward Tomasz Napierala 2048009ea47eSEdward Tomasz Napierala ISCSI_DEBUG("removing all sessions due to shutdown"); 2049009ea47eSEdward Tomasz Napierala 2050009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 2051009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) 2052009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 2053009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 2054009ea47eSEdward Tomasz Napierala } 2055009ea47eSEdward Tomasz Napierala 2056009ea47eSEdward Tomasz Napierala static int 2057009ea47eSEdward Tomasz Napierala iscsi_load(void) 2058009ea47eSEdward Tomasz Napierala { 2059009ea47eSEdward Tomasz Napierala int error; 2060009ea47eSEdward Tomasz Napierala 2061009ea47eSEdward Tomasz Napierala sc = malloc(sizeof(*sc), M_ISCSI, M_ZERO | M_WAITOK); 2062009ea47eSEdward Tomasz Napierala sx_init(&sc->sc_lock, "iscsi"); 2063009ea47eSEdward Tomasz Napierala TAILQ_INIT(&sc->sc_sessions); 2064009ea47eSEdward Tomasz Napierala cv_init(&sc->sc_cv, "iscsi_cv"); 2065009ea47eSEdward Tomasz Napierala 2066009ea47eSEdward Tomasz Napierala iscsi_outstanding_zone = uma_zcreate("iscsi_outstanding", 2067009ea47eSEdward Tomasz Napierala sizeof(struct iscsi_outstanding), NULL, NULL, NULL, NULL, 2068c28c09c1SEdward Tomasz Napierala UMA_ALIGN_PTR, 0); 2069009ea47eSEdward Tomasz Napierala 2070009ea47eSEdward Tomasz Napierala error = make_dev_p(MAKEDEV_CHECKNAME, &sc->sc_cdev, &iscsi_cdevsw, 2071009ea47eSEdward Tomasz Napierala NULL, UID_ROOT, GID_WHEEL, 0600, "iscsi"); 2072009ea47eSEdward Tomasz Napierala if (error != 0) { 2073009ea47eSEdward Tomasz Napierala ISCSI_WARN("failed to create device node, error %d", error); 2074009ea47eSEdward Tomasz Napierala return (error); 2075009ea47eSEdward Tomasz Napierala } 2076009ea47eSEdward Tomasz Napierala sc->sc_cdev->si_drv1 = sc; 2077009ea47eSEdward Tomasz Napierala 2078009ea47eSEdward Tomasz Napierala /* 2079c4dfe4abSEdward Tomasz Napierala * Note that this needs to get run before dashutdown(). Otherwise, 2080c4dfe4abSEdward Tomasz Napierala * when rebooting with iSCSI session with outstanding requests, 2081c4dfe4abSEdward Tomasz Napierala * but disconnected, dashutdown() will hang on cam_periph_runccb(). 2082009ea47eSEdward Tomasz Napierala */ 2083c4dfe4abSEdward Tomasz Napierala sc->sc_shutdown_eh = EVENTHANDLER_REGISTER(shutdown_post_sync, 2084c4dfe4abSEdward Tomasz Napierala iscsi_shutdown, sc, SHUTDOWN_PRI_FIRST); 2085009ea47eSEdward Tomasz Napierala 2086009ea47eSEdward Tomasz Napierala return (0); 2087009ea47eSEdward Tomasz Napierala } 2088009ea47eSEdward Tomasz Napierala 2089009ea47eSEdward Tomasz Napierala static int 2090009ea47eSEdward Tomasz Napierala iscsi_unload(void) 2091009ea47eSEdward Tomasz Napierala { 2092009ea47eSEdward Tomasz Napierala struct iscsi_session *is, *tmp; 2093009ea47eSEdward Tomasz Napierala 2094a667cf73SEdward Tomasz Napierala if (sc->sc_cdev != NULL) { 2095009ea47eSEdward Tomasz Napierala ISCSI_DEBUG("removing device node"); 2096009ea47eSEdward Tomasz Napierala destroy_dev(sc->sc_cdev); 2097009ea47eSEdward Tomasz Napierala ISCSI_DEBUG("device node removed"); 2098a667cf73SEdward Tomasz Napierala } 2099009ea47eSEdward Tomasz Napierala 2100a667cf73SEdward Tomasz Napierala if (sc->sc_shutdown_eh != NULL) 2101009ea47eSEdward Tomasz Napierala EVENTHANDLER_DEREGISTER(shutdown_post_sync, sc->sc_shutdown_eh); 2102009ea47eSEdward Tomasz Napierala 2103009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 2104009ea47eSEdward Tomasz Napierala TAILQ_FOREACH_SAFE(is, &sc->sc_sessions, is_next, tmp) 2105009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 2106009ea47eSEdward Tomasz Napierala while(!TAILQ_EMPTY(&sc->sc_sessions)) { 2107009ea47eSEdward Tomasz Napierala ISCSI_DEBUG("waiting for sessions to terminate"); 2108009ea47eSEdward Tomasz Napierala cv_wait(&sc->sc_cv, &sc->sc_lock); 2109009ea47eSEdward Tomasz Napierala } 2110009ea47eSEdward Tomasz Napierala ISCSI_DEBUG("all sessions terminated"); 2111009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 2112009ea47eSEdward Tomasz Napierala 2113009ea47eSEdward Tomasz Napierala uma_zdestroy(iscsi_outstanding_zone); 2114009ea47eSEdward Tomasz Napierala sx_destroy(&sc->sc_lock); 2115009ea47eSEdward Tomasz Napierala cv_destroy(&sc->sc_cv); 2116009ea47eSEdward Tomasz Napierala free(sc, M_ISCSI); 2117009ea47eSEdward Tomasz Napierala return (0); 2118009ea47eSEdward Tomasz Napierala } 2119009ea47eSEdward Tomasz Napierala 2120009ea47eSEdward Tomasz Napierala static int 2121009ea47eSEdward Tomasz Napierala iscsi_quiesce(void) 2122009ea47eSEdward Tomasz Napierala { 2123009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 2124009ea47eSEdward Tomasz Napierala if (!TAILQ_EMPTY(&sc->sc_sessions)) { 2125009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 2126009ea47eSEdward Tomasz Napierala return (EBUSY); 2127009ea47eSEdward Tomasz Napierala } 2128009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 2129009ea47eSEdward Tomasz Napierala return (0); 2130009ea47eSEdward Tomasz Napierala } 2131009ea47eSEdward Tomasz Napierala 2132009ea47eSEdward Tomasz Napierala static int 2133009ea47eSEdward Tomasz Napierala iscsi_modevent(module_t mod, int what, void *arg) 2134009ea47eSEdward Tomasz Napierala { 2135009ea47eSEdward Tomasz Napierala int error; 2136009ea47eSEdward Tomasz Napierala 2137009ea47eSEdward Tomasz Napierala switch (what) { 2138009ea47eSEdward Tomasz Napierala case MOD_LOAD: 2139009ea47eSEdward Tomasz Napierala error = iscsi_load(); 2140009ea47eSEdward Tomasz Napierala break; 2141009ea47eSEdward Tomasz Napierala case MOD_UNLOAD: 2142009ea47eSEdward Tomasz Napierala error = iscsi_unload(); 2143009ea47eSEdward Tomasz Napierala break; 2144009ea47eSEdward Tomasz Napierala case MOD_QUIESCE: 2145009ea47eSEdward Tomasz Napierala error = iscsi_quiesce(); 2146009ea47eSEdward Tomasz Napierala break; 2147009ea47eSEdward Tomasz Napierala default: 2148009ea47eSEdward Tomasz Napierala error = EINVAL; 2149009ea47eSEdward Tomasz Napierala break; 2150009ea47eSEdward Tomasz Napierala } 2151009ea47eSEdward Tomasz Napierala return (error); 2152009ea47eSEdward Tomasz Napierala } 2153009ea47eSEdward Tomasz Napierala 2154009ea47eSEdward Tomasz Napierala moduledata_t iscsi_data = { 2155009ea47eSEdward Tomasz Napierala "iscsi", 2156009ea47eSEdward Tomasz Napierala iscsi_modevent, 2157009ea47eSEdward Tomasz Napierala 0 2158009ea47eSEdward Tomasz Napierala }; 2159009ea47eSEdward Tomasz Napierala 2160009ea47eSEdward Tomasz Napierala DECLARE_MODULE(iscsi, iscsi_data, SI_SUB_DRIVERS, SI_ORDER_MIDDLE); 2161009ea47eSEdward Tomasz Napierala MODULE_DEPEND(iscsi, cam, 1, 1, 1); 2162009ea47eSEdward Tomasz Napierala MODULE_DEPEND(iscsi, icl, 1, 1, 1); 2163