1009ea47eSEdward Tomasz Napierala /*- 2718cf2ccSPedro F. Giffuni * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3718cf2ccSPedro F. Giffuni * 4009ea47eSEdward Tomasz Napierala * Copyright (c) 2012 The FreeBSD Foundation 5009ea47eSEdward Tomasz Napierala * All rights reserved. 6009ea47eSEdward Tomasz Napierala * 7009ea47eSEdward Tomasz Napierala * This software was developed by Edward Tomasz Napierala under sponsorship 8009ea47eSEdward Tomasz Napierala * from the FreeBSD Foundation. 9009ea47eSEdward Tomasz Napierala * 10009ea47eSEdward Tomasz Napierala * Redistribution and use in source and binary forms, with or without 11009ea47eSEdward Tomasz Napierala * modification, are permitted provided that the following conditions 12009ea47eSEdward Tomasz Napierala * are met: 13009ea47eSEdward Tomasz Napierala * 1. Redistributions of source code must retain the above copyright 14009ea47eSEdward Tomasz Napierala * notice, this list of conditions and the following disclaimer. 15009ea47eSEdward Tomasz Napierala * 2. Redistributions in binary form must reproduce the above copyright 16009ea47eSEdward Tomasz Napierala * notice, this list of conditions and the following disclaimer in the 17009ea47eSEdward Tomasz Napierala * documentation and/or other materials provided with the distribution. 18009ea47eSEdward Tomasz Napierala * 19009ea47eSEdward Tomasz Napierala * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 20009ea47eSEdward Tomasz Napierala * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21009ea47eSEdward Tomasz Napierala * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22009ea47eSEdward Tomasz Napierala * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 23009ea47eSEdward Tomasz Napierala * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24009ea47eSEdward Tomasz Napierala * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25009ea47eSEdward Tomasz Napierala * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26009ea47eSEdward Tomasz Napierala * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27009ea47eSEdward Tomasz Napierala * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28009ea47eSEdward Tomasz Napierala * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29009ea47eSEdward Tomasz Napierala * SUCH DAMAGE. 30009ea47eSEdward Tomasz Napierala * 31009ea47eSEdward Tomasz Napierala */ 32009ea47eSEdward Tomasz Napierala 33b7a65e39SEdward Tomasz Napierala #include <sys/cdefs.h> 34b7a65e39SEdward Tomasz Napierala __FBSDID("$FreeBSD$"); 35b7a65e39SEdward Tomasz Napierala 36009ea47eSEdward Tomasz Napierala #include <sys/param.h> 37009ea47eSEdward Tomasz Napierala #include <sys/condvar.h> 38009ea47eSEdward Tomasz Napierala #include <sys/conf.h> 39a9f2f291SEdward Tomasz Napierala #include <sys/endian.h> 40009ea47eSEdward Tomasz Napierala #include <sys/eventhandler.h> 41009ea47eSEdward Tomasz Napierala #include <sys/file.h> 42009ea47eSEdward Tomasz Napierala #include <sys/kernel.h> 43009ea47eSEdward Tomasz Napierala #include <sys/kthread.h> 44009ea47eSEdward Tomasz Napierala #include <sys/lock.h> 45009ea47eSEdward Tomasz Napierala #include <sys/malloc.h> 46009ea47eSEdward Tomasz Napierala #include <sys/mutex.h> 47009ea47eSEdward Tomasz Napierala #include <sys/module.h> 48f41492b0SEdward Tomasz Napierala #include <sys/socket.h> 49009ea47eSEdward Tomasz Napierala #include <sys/sysctl.h> 50009ea47eSEdward Tomasz Napierala #include <sys/systm.h> 51009ea47eSEdward Tomasz Napierala #include <sys/sx.h> 52009ea47eSEdward Tomasz Napierala #include <vm/uma.h> 53009ea47eSEdward Tomasz Napierala 54009ea47eSEdward Tomasz Napierala #include <cam/cam.h> 55009ea47eSEdward Tomasz Napierala #include <cam/cam_ccb.h> 56009ea47eSEdward Tomasz Napierala #include <cam/cam_xpt.h> 57009ea47eSEdward Tomasz Napierala #include <cam/cam_debug.h> 58009ea47eSEdward Tomasz Napierala #include <cam/cam_sim.h> 59009ea47eSEdward Tomasz Napierala #include <cam/cam_xpt_sim.h> 60009ea47eSEdward Tomasz Napierala #include <cam/cam_xpt_periph.h> 61009ea47eSEdward Tomasz Napierala #include <cam/cam_periph.h> 62009ea47eSEdward Tomasz Napierala #include <cam/scsi/scsi_all.h> 63009ea47eSEdward Tomasz Napierala #include <cam/scsi/scsi_message.h> 64009ea47eSEdward Tomasz Napierala 65ddc5fd90SEdward Tomasz Napierala #include <dev/iscsi/icl.h> 66321b17ecSEdward Tomasz Napierala #include <dev/iscsi/icl_wrappers.h> 67ddc5fd90SEdward Tomasz Napierala #include <dev/iscsi/iscsi_ioctl.h> 68ddc5fd90SEdward Tomasz Napierala #include <dev/iscsi/iscsi_proto.h> 69ddc5fd90SEdward Tomasz Napierala #include <dev/iscsi/iscsi.h> 70009ea47eSEdward Tomasz Napierala 71009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 72009ea47eSEdward Tomasz Napierala #include <sys/socketvar.h> 73009ea47eSEdward Tomasz Napierala #endif 74009ea47eSEdward Tomasz Napierala 752ebde326SEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 762ebde326SEdward Tomasz Napierala FEATURE(iscsi_kernel_proxy, "iSCSI initiator built with ICL_KERNEL_PROXY"); 772ebde326SEdward Tomasz Napierala #endif 782ebde326SEdward Tomasz Napierala 79009ea47eSEdward Tomasz Napierala /* 80009ea47eSEdward Tomasz Napierala * XXX: This is global so the iscsi_unload() can access it. 81009ea47eSEdward Tomasz Napierala * Think about how to do this properly. 82009ea47eSEdward Tomasz Napierala */ 83009ea47eSEdward Tomasz Napierala static struct iscsi_softc *sc; 84009ea47eSEdward Tomasz Napierala 85009ea47eSEdward Tomasz Napierala SYSCTL_NODE(_kern, OID_AUTO, iscsi, CTLFLAG_RD, 0, "iSCSI initiator"); 86009ea47eSEdward Tomasz Napierala static int debug = 1; 87605a34b0SEdward Tomasz Napierala SYSCTL_INT(_kern_iscsi, OID_AUTO, debug, CTLFLAG_RWTUN, 881f6b2af2SAlexander Motin &debug, 0, "Enable debug messages"); 89009ea47eSEdward Tomasz Napierala static int ping_timeout = 5; 90605a34b0SEdward Tomasz Napierala SYSCTL_INT(_kern_iscsi, OID_AUTO, ping_timeout, CTLFLAG_RWTUN, &ping_timeout, 911f6b2af2SAlexander Motin 0, "Timeout for ping (NOP-Out) requests, in seconds"); 92009ea47eSEdward Tomasz Napierala static int iscsid_timeout = 60; 93605a34b0SEdward Tomasz Napierala SYSCTL_INT(_kern_iscsi, OID_AUTO, iscsid_timeout, CTLFLAG_RWTUN, &iscsid_timeout, 941f6b2af2SAlexander Motin 0, "Time to wait for iscsid(8) to handle reconnection, in seconds"); 95009ea47eSEdward Tomasz Napierala static int login_timeout = 60; 96605a34b0SEdward Tomasz Napierala SYSCTL_INT(_kern_iscsi, OID_AUTO, login_timeout, CTLFLAG_RWTUN, &login_timeout, 971f6b2af2SAlexander Motin 0, "Time to wait for iscsid(8) to finish Login Phase, in seconds"); 98009ea47eSEdward Tomasz Napierala static int maxtags = 255; 99605a34b0SEdward Tomasz Napierala SYSCTL_INT(_kern_iscsi, OID_AUTO, maxtags, CTLFLAG_RWTUN, &maxtags, 1001f6b2af2SAlexander Motin 0, "Max number of IO requests queued"); 101f1f12e40SEdward Tomasz Napierala static int fail_on_disconnection = 0; 102f1f12e40SEdward Tomasz Napierala SYSCTL_INT(_kern_iscsi, OID_AUTO, fail_on_disconnection, CTLFLAG_RWTUN, 103f1f12e40SEdward Tomasz Napierala &fail_on_disconnection, 0, "Destroy CAM SIM on connection failure"); 104481b36c6SSteven Hartland static int fail_on_shutdown = 1; 105481b36c6SSteven Hartland SYSCTL_INT(_kern_iscsi, OID_AUTO, fail_on_shutdown, CTLFLAG_RWTUN, 106481b36c6SSteven Hartland &fail_on_shutdown, 0, "Fail disconnected sessions on shutdown"); 107009ea47eSEdward Tomasz Napierala 108009ea47eSEdward Tomasz Napierala static MALLOC_DEFINE(M_ISCSI, "iSCSI", "iSCSI initiator"); 109009ea47eSEdward Tomasz Napierala static uma_zone_t iscsi_outstanding_zone; 110009ea47eSEdward Tomasz Napierala 111009ea47eSEdward Tomasz Napierala #define CONN_SESSION(X) ((struct iscsi_session *)X->ic_prv0) 112009ea47eSEdward Tomasz Napierala #define PDU_SESSION(X) (CONN_SESSION(X->ip_conn)) 113009ea47eSEdward Tomasz Napierala 114009ea47eSEdward Tomasz Napierala #define ISCSI_DEBUG(X, ...) \ 115b1277ad1SEdward Tomasz Napierala do { \ 116b1277ad1SEdward Tomasz Napierala if (debug > 1) \ 117009ea47eSEdward Tomasz Napierala printf("%s: " X "\n", __func__, ## __VA_ARGS__);\ 118009ea47eSEdward Tomasz Napierala } while (0) 119009ea47eSEdward Tomasz Napierala 120009ea47eSEdward Tomasz Napierala #define ISCSI_WARN(X, ...) \ 121b1277ad1SEdward Tomasz Napierala do { \ 122009ea47eSEdward Tomasz Napierala if (debug > 0) { \ 123009ea47eSEdward Tomasz Napierala printf("WARNING: %s: " X "\n", \ 124009ea47eSEdward Tomasz Napierala __func__, ## __VA_ARGS__); \ 125b1277ad1SEdward Tomasz Napierala } \ 126009ea47eSEdward Tomasz Napierala } while (0) 127009ea47eSEdward Tomasz Napierala 128009ea47eSEdward Tomasz Napierala #define ISCSI_SESSION_DEBUG(S, X, ...) \ 129b1277ad1SEdward Tomasz Napierala do { \ 130009ea47eSEdward Tomasz Napierala if (debug > 1) { \ 131009ea47eSEdward Tomasz Napierala printf("%s: %s (%s): " X "\n", \ 132009ea47eSEdward Tomasz Napierala __func__, S->is_conf.isc_target_addr, \ 133009ea47eSEdward Tomasz Napierala S->is_conf.isc_target, ## __VA_ARGS__); \ 134b1277ad1SEdward Tomasz Napierala } \ 135009ea47eSEdward Tomasz Napierala } while (0) 136009ea47eSEdward Tomasz Napierala 137009ea47eSEdward Tomasz Napierala #define ISCSI_SESSION_WARN(S, X, ...) \ 138b1277ad1SEdward Tomasz Napierala do { \ 139009ea47eSEdward Tomasz Napierala if (debug > 0) { \ 140009ea47eSEdward Tomasz Napierala printf("WARNING: %s (%s): " X "\n", \ 141009ea47eSEdward Tomasz Napierala S->is_conf.isc_target_addr, \ 142009ea47eSEdward Tomasz Napierala S->is_conf.isc_target, ## __VA_ARGS__); \ 143b1277ad1SEdward Tomasz Napierala } \ 144009ea47eSEdward Tomasz Napierala } while (0) 145009ea47eSEdward Tomasz Napierala 146009ea47eSEdward Tomasz Napierala #define ISCSI_SESSION_LOCK(X) mtx_lock(&X->is_lock) 147009ea47eSEdward Tomasz Napierala #define ISCSI_SESSION_UNLOCK(X) mtx_unlock(&X->is_lock) 148009ea47eSEdward Tomasz Napierala #define ISCSI_SESSION_LOCK_ASSERT(X) mtx_assert(&X->is_lock, MA_OWNED) 149c215ad3aSAlexander Motin #define ISCSI_SESSION_LOCK_ASSERT_NOT(X) mtx_assert(&X->is_lock, MA_NOTOWNED) 150009ea47eSEdward Tomasz Napierala 151009ea47eSEdward Tomasz Napierala static int iscsi_ioctl(struct cdev *dev, u_long cmd, caddr_t arg, 152009ea47eSEdward Tomasz Napierala int mode, struct thread *td); 153009ea47eSEdward Tomasz Napierala 154009ea47eSEdward Tomasz Napierala static struct cdevsw iscsi_cdevsw = { 155009ea47eSEdward Tomasz Napierala .d_version = D_VERSION, 156009ea47eSEdward Tomasz Napierala .d_ioctl = iscsi_ioctl, 157009ea47eSEdward Tomasz Napierala .d_name = "iscsi", 158009ea47eSEdward Tomasz Napierala }; 159009ea47eSEdward Tomasz Napierala 160009ea47eSEdward Tomasz Napierala static void iscsi_pdu_queue_locked(struct icl_pdu *request); 161009ea47eSEdward Tomasz Napierala static void iscsi_pdu_queue(struct icl_pdu *request); 162009ea47eSEdward Tomasz Napierala static void iscsi_pdu_update_statsn(const struct icl_pdu *response); 163009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_nop_in(struct icl_pdu *response); 164009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_scsi_response(struct icl_pdu *response); 165aa75114cSAlexander Motin static void iscsi_pdu_handle_task_response(struct icl_pdu *response); 166009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_data_in(struct icl_pdu *response); 167009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_logout_response(struct icl_pdu *response); 168009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_r2t(struct icl_pdu *response); 169009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_async_message(struct icl_pdu *response); 170009ea47eSEdward Tomasz Napierala static void iscsi_pdu_handle_reject(struct icl_pdu *response); 171009ea47eSEdward Tomasz Napierala static void iscsi_session_reconnect(struct iscsi_session *is); 172009ea47eSEdward Tomasz Napierala static void iscsi_session_terminate(struct iscsi_session *is); 173009ea47eSEdward Tomasz Napierala static void iscsi_action(struct cam_sim *sim, union ccb *ccb); 174009ea47eSEdward Tomasz Napierala static void iscsi_poll(struct cam_sim *sim); 175009ea47eSEdward Tomasz Napierala static struct iscsi_outstanding *iscsi_outstanding_find(struct iscsi_session *is, 176009ea47eSEdward Tomasz Napierala uint32_t initiator_task_tag); 177aa75114cSAlexander Motin static struct iscsi_outstanding *iscsi_outstanding_add(struct iscsi_session *is, 178604c023fSEdward Tomasz Napierala struct icl_pdu *request, union ccb *ccb, 179604c023fSEdward Tomasz Napierala uint32_t *initiator_task_tagp); 180009ea47eSEdward Tomasz Napierala static void iscsi_outstanding_remove(struct iscsi_session *is, 181009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io); 182009ea47eSEdward Tomasz Napierala 183009ea47eSEdward Tomasz Napierala static bool 184009ea47eSEdward Tomasz Napierala iscsi_pdu_prepare(struct icl_pdu *request) 185009ea47eSEdward Tomasz Napierala { 186009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 187009ea47eSEdward Tomasz Napierala struct iscsi_bhs_scsi_command *bhssc; 188009ea47eSEdward Tomasz Napierala 189009ea47eSEdward Tomasz Napierala is = PDU_SESSION(request); 190009ea47eSEdward Tomasz Napierala 191009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 192009ea47eSEdward Tomasz Napierala 193009ea47eSEdward Tomasz Napierala /* 194009ea47eSEdward Tomasz Napierala * We're only using fields common for all the request 195009ea47eSEdward Tomasz Napierala * (initiator -> target) PDUs. 196009ea47eSEdward Tomasz Napierala */ 197009ea47eSEdward Tomasz Napierala bhssc = (struct iscsi_bhs_scsi_command *)request->ip_bhs; 198009ea47eSEdward Tomasz Napierala 199009ea47eSEdward Tomasz Napierala /* 200009ea47eSEdward Tomasz Napierala * Data-Out PDU does not contain CmdSN. 201009ea47eSEdward Tomasz Napierala */ 202009ea47eSEdward Tomasz Napierala if (bhssc->bhssc_opcode != ISCSI_BHS_OPCODE_SCSI_DATA_OUT) { 2032124e3b0SAlexander Motin if (ISCSI_SNGT(is->is_cmdsn, is->is_maxcmdsn) && 204009ea47eSEdward Tomasz Napierala (bhssc->bhssc_opcode & ISCSI_BHS_OPCODE_IMMEDIATE) == 0) { 205009ea47eSEdward Tomasz Napierala /* 206009ea47eSEdward Tomasz Napierala * Current MaxCmdSN prevents us from sending any more 207009ea47eSEdward Tomasz Napierala * SCSI Command PDUs to the target; postpone the PDU. 208009ea47eSEdward Tomasz Napierala * It will get resent by either iscsi_pdu_queue(), 209009ea47eSEdward Tomasz Napierala * or by maintenance thread. 210009ea47eSEdward Tomasz Napierala */ 211009ea47eSEdward Tomasz Napierala #if 0 2122124e3b0SAlexander Motin ISCSI_SESSION_DEBUG(is, "postponing send, CmdSN %u, " 2132124e3b0SAlexander Motin "ExpCmdSN %u, MaxCmdSN %u, opcode 0x%x", 2142124e3b0SAlexander Motin is->is_cmdsn, is->is_expcmdsn, is->is_maxcmdsn, 2152124e3b0SAlexander Motin bhssc->bhssc_opcode); 216009ea47eSEdward Tomasz Napierala #endif 217009ea47eSEdward Tomasz Napierala return (true); 218009ea47eSEdward Tomasz Napierala } 219009ea47eSEdward Tomasz Napierala bhssc->bhssc_cmdsn = htonl(is->is_cmdsn); 220009ea47eSEdward Tomasz Napierala if ((bhssc->bhssc_opcode & ISCSI_BHS_OPCODE_IMMEDIATE) == 0) 221009ea47eSEdward Tomasz Napierala is->is_cmdsn++; 222009ea47eSEdward Tomasz Napierala } 223009ea47eSEdward Tomasz Napierala bhssc->bhssc_expstatsn = htonl(is->is_statsn + 1); 224009ea47eSEdward Tomasz Napierala 225009ea47eSEdward Tomasz Napierala return (false); 226009ea47eSEdward Tomasz Napierala } 227009ea47eSEdward Tomasz Napierala 228009ea47eSEdward Tomasz Napierala static void 229009ea47eSEdward Tomasz Napierala iscsi_session_send_postponed(struct iscsi_session *is) 230009ea47eSEdward Tomasz Napierala { 231009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 232009ea47eSEdward Tomasz Napierala bool postpone; 233009ea47eSEdward Tomasz Napierala 234009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 235009ea47eSEdward Tomasz Napierala 2364c9ea0ceSAlexander Motin if (STAILQ_EMPTY(&is->is_postponed)) 2374c9ea0ceSAlexander Motin return; 2384c9ea0ceSAlexander Motin while ((request = STAILQ_FIRST(&is->is_postponed)) != NULL) { 239009ea47eSEdward Tomasz Napierala postpone = iscsi_pdu_prepare(request); 240009ea47eSEdward Tomasz Napierala if (postpone) 2414c9ea0ceSAlexander Motin return; 24216c158a5SEdward Tomasz Napierala STAILQ_REMOVE_HEAD(&is->is_postponed, ip_next); 243009ea47eSEdward Tomasz Napierala icl_pdu_queue(request); 244009ea47eSEdward Tomasz Napierala } 2454c9ea0ceSAlexander Motin xpt_release_simq(is->is_sim, 1); 246009ea47eSEdward Tomasz Napierala } 247009ea47eSEdward Tomasz Napierala 248009ea47eSEdward Tomasz Napierala static void 249009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(struct icl_pdu *request) 250009ea47eSEdward Tomasz Napierala { 251009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 252009ea47eSEdward Tomasz Napierala bool postpone; 253009ea47eSEdward Tomasz Napierala 254009ea47eSEdward Tomasz Napierala is = PDU_SESSION(request); 255009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 256009ea47eSEdward Tomasz Napierala iscsi_session_send_postponed(is); 257009ea47eSEdward Tomasz Napierala postpone = iscsi_pdu_prepare(request); 258009ea47eSEdward Tomasz Napierala if (postpone) { 2594c9ea0ceSAlexander Motin if (STAILQ_EMPTY(&is->is_postponed)) 2604c9ea0ceSAlexander Motin xpt_freeze_simq(is->is_sim, 1); 26116c158a5SEdward Tomasz Napierala STAILQ_INSERT_TAIL(&is->is_postponed, request, ip_next); 262009ea47eSEdward Tomasz Napierala return; 263009ea47eSEdward Tomasz Napierala } 264009ea47eSEdward Tomasz Napierala icl_pdu_queue(request); 265009ea47eSEdward Tomasz Napierala } 266009ea47eSEdward Tomasz Napierala 267009ea47eSEdward Tomasz Napierala static void 268009ea47eSEdward Tomasz Napierala iscsi_pdu_queue(struct icl_pdu *request) 269009ea47eSEdward Tomasz Napierala { 270009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 271009ea47eSEdward Tomasz Napierala 272009ea47eSEdward Tomasz Napierala is = PDU_SESSION(request); 273009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 274009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(request); 275009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 276009ea47eSEdward Tomasz Napierala } 277009ea47eSEdward Tomasz Napierala 278009ea47eSEdward Tomasz Napierala static void 279009ea47eSEdward Tomasz Napierala iscsi_session_logout(struct iscsi_session *is) 280009ea47eSEdward Tomasz Napierala { 281009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 282009ea47eSEdward Tomasz Napierala struct iscsi_bhs_logout_request *bhslr; 283009ea47eSEdward Tomasz Napierala 284d2d52b00SEdward Tomasz Napierala request = icl_pdu_new(is->is_conn, M_NOWAIT); 285009ea47eSEdward Tomasz Napierala if (request == NULL) 286009ea47eSEdward Tomasz Napierala return; 287009ea47eSEdward Tomasz Napierala 288009ea47eSEdward Tomasz Napierala bhslr = (struct iscsi_bhs_logout_request *)request->ip_bhs; 289009ea47eSEdward Tomasz Napierala bhslr->bhslr_opcode = ISCSI_BHS_OPCODE_LOGOUT_REQUEST; 290009ea47eSEdward Tomasz Napierala bhslr->bhslr_reason = BHSLR_REASON_CLOSE_SESSION; 291009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(request); 292009ea47eSEdward Tomasz Napierala } 293009ea47eSEdward Tomasz Napierala 294009ea47eSEdward Tomasz Napierala static void 295aa75114cSAlexander Motin iscsi_session_terminate_task(struct iscsi_session *is, 296ad10496cSAndriy Gapon struct iscsi_outstanding *io, cam_status status) 297aa75114cSAlexander Motin { 298aa75114cSAlexander Motin 299e204e2cdSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 300e204e2cdSEdward Tomasz Napierala 301aa75114cSAlexander Motin if (io->io_ccb != NULL) { 302aa75114cSAlexander Motin io->io_ccb->ccb_h.status &= ~(CAM_SIM_QUEUED | CAM_STATUS_MASK); 303ad10496cSAndriy Gapon io->io_ccb->ccb_h.status |= status; 304aa75114cSAlexander Motin if ((io->io_ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 305aa75114cSAlexander Motin io->io_ccb->ccb_h.status |= CAM_DEV_QFRZN; 306aa75114cSAlexander Motin xpt_freeze_devq(io->io_ccb->ccb_h.path, 1); 307aa75114cSAlexander Motin ISCSI_SESSION_DEBUG(is, "freezing devq"); 308aa75114cSAlexander Motin } 309aa75114cSAlexander Motin xpt_done(io->io_ccb); 310aa75114cSAlexander Motin } 311aa75114cSAlexander Motin iscsi_outstanding_remove(is, io); 312aa75114cSAlexander Motin } 313aa75114cSAlexander Motin 314aa75114cSAlexander Motin static void 315ad10496cSAndriy Gapon iscsi_session_terminate_tasks(struct iscsi_session *is, cam_status status) 316009ea47eSEdward Tomasz Napierala { 317009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io, *tmp; 318009ea47eSEdward Tomasz Napierala 319009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 320009ea47eSEdward Tomasz Napierala 321009ea47eSEdward Tomasz Napierala TAILQ_FOREACH_SAFE(io, &is->is_outstanding, io_next, tmp) { 322ad10496cSAndriy Gapon iscsi_session_terminate_task(is, io, status); 323009ea47eSEdward Tomasz Napierala } 324009ea47eSEdward Tomasz Napierala } 325009ea47eSEdward Tomasz Napierala 326009ea47eSEdward Tomasz Napierala static void 327f1f12e40SEdward Tomasz Napierala iscsi_session_cleanup(struct iscsi_session *is, bool destroy_sim) 328009ea47eSEdward Tomasz Napierala { 329009ea47eSEdward Tomasz Napierala struct icl_pdu *pdu; 330009ea47eSEdward Tomasz Napierala 331f1f12e40SEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 332009ea47eSEdward Tomasz Napierala 333009ea47eSEdward Tomasz Napierala /* 334009ea47eSEdward Tomasz Napierala * Don't queue any new PDUs. 335009ea47eSEdward Tomasz Napierala */ 336009ea47eSEdward Tomasz Napierala if (is->is_sim != NULL && is->is_simq_frozen == false) { 337009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing"); 338009ea47eSEdward Tomasz Napierala xpt_freeze_simq(is->is_sim, 1); 339009ea47eSEdward Tomasz Napierala is->is_simq_frozen = true; 340009ea47eSEdward Tomasz Napierala } 341009ea47eSEdward Tomasz Napierala 342009ea47eSEdward Tomasz Napierala /* 343009ea47eSEdward Tomasz Napierala * Remove postponed PDUs. 344009ea47eSEdward Tomasz Napierala */ 3454c9ea0ceSAlexander Motin if (!STAILQ_EMPTY(&is->is_postponed)) 3464c9ea0ceSAlexander Motin xpt_release_simq(is->is_sim, 1); 3474c9ea0ceSAlexander Motin while ((pdu = STAILQ_FIRST(&is->is_postponed)) != NULL) { 34816c158a5SEdward Tomasz Napierala STAILQ_REMOVE_HEAD(&is->is_postponed, ip_next); 349009ea47eSEdward Tomasz Napierala icl_pdu_free(pdu); 350009ea47eSEdward Tomasz Napierala } 351009ea47eSEdward Tomasz Napierala 352f1f12e40SEdward Tomasz Napierala if (destroy_sim == false) { 353009ea47eSEdward Tomasz Napierala /* 354009ea47eSEdward Tomasz Napierala * Terminate SCSI tasks, asking CAM to requeue them. 355009ea47eSEdward Tomasz Napierala */ 356ad10496cSAndriy Gapon iscsi_session_terminate_tasks(is, CAM_REQUEUE_REQ); 357f1f12e40SEdward Tomasz Napierala return; 358f1f12e40SEdward Tomasz Napierala } 359f1f12e40SEdward Tomasz Napierala 360ad10496cSAndriy Gapon iscsi_session_terminate_tasks(is, CAM_DEV_NOT_THERE); 361f1f12e40SEdward Tomasz Napierala 362f1f12e40SEdward Tomasz Napierala if (is->is_sim == NULL) 363f1f12e40SEdward Tomasz Napierala return; 364f1f12e40SEdward Tomasz Napierala 365f1f12e40SEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "deregistering SIM"); 366f1f12e40SEdward Tomasz Napierala xpt_async(AC_LOST_DEVICE, is->is_path, NULL); 367f1f12e40SEdward Tomasz Napierala 368f1f12e40SEdward Tomasz Napierala if (is->is_simq_frozen) { 369f1f12e40SEdward Tomasz Napierala xpt_release_simq(is->is_sim, 1); 370f1f12e40SEdward Tomasz Napierala is->is_simq_frozen = false; 371f1f12e40SEdward Tomasz Napierala } 372f1f12e40SEdward Tomasz Napierala 373f1f12e40SEdward Tomasz Napierala xpt_free_path(is->is_path); 374f1f12e40SEdward Tomasz Napierala is->is_path = NULL; 375f1f12e40SEdward Tomasz Napierala xpt_bus_deregister(cam_sim_path(is->is_sim)); 376f1f12e40SEdward Tomasz Napierala cam_sim_free(is->is_sim, TRUE /*free_devq*/); 377f1f12e40SEdward Tomasz Napierala is->is_sim = NULL; 378f1f12e40SEdward Tomasz Napierala is->is_devq = NULL; 379f1f12e40SEdward Tomasz Napierala } 380f1f12e40SEdward Tomasz Napierala 381f1f12e40SEdward Tomasz Napierala static void 382f1f12e40SEdward Tomasz Napierala iscsi_maintenance_thread_reconnect(struct iscsi_session *is) 383f1f12e40SEdward Tomasz Napierala { 384f1f12e40SEdward Tomasz Napierala 385f1f12e40SEdward Tomasz Napierala icl_conn_close(is->is_conn); 386f1f12e40SEdward Tomasz Napierala 387f1f12e40SEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 388f1f12e40SEdward Tomasz Napierala 389f1f12e40SEdward Tomasz Napierala is->is_connected = false; 390f1f12e40SEdward Tomasz Napierala is->is_reconnecting = false; 391f1f12e40SEdward Tomasz Napierala is->is_login_phase = false; 392f1f12e40SEdward Tomasz Napierala 393f1f12e40SEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 394f1f12e40SEdward Tomasz Napierala if (is->is_login_pdu != NULL) { 395f1f12e40SEdward Tomasz Napierala icl_pdu_free(is->is_login_pdu); 396f1f12e40SEdward Tomasz Napierala is->is_login_pdu = NULL; 397f1f12e40SEdward Tomasz Napierala } 398f1f12e40SEdward Tomasz Napierala cv_signal(&is->is_login_cv); 399f1f12e40SEdward Tomasz Napierala #endif 400f1f12e40SEdward Tomasz Napierala 401f1f12e40SEdward Tomasz Napierala if (fail_on_disconnection) { 402f1f12e40SEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "connection failed, destroying devices"); 403f1f12e40SEdward Tomasz Napierala iscsi_session_cleanup(is, true); 404f1f12e40SEdward Tomasz Napierala } else { 405f1f12e40SEdward Tomasz Napierala iscsi_session_cleanup(is, false); 406f1f12e40SEdward Tomasz Napierala } 407009ea47eSEdward Tomasz Napierala 408009ea47eSEdward Tomasz Napierala KASSERT(TAILQ_EMPTY(&is->is_outstanding), 409009ea47eSEdward Tomasz Napierala ("destroying session with active tasks")); 41016c158a5SEdward Tomasz Napierala KASSERT(STAILQ_EMPTY(&is->is_postponed), 411009ea47eSEdward Tomasz Napierala ("destroying session with postponed PDUs")); 412009ea47eSEdward Tomasz Napierala 413ba165a31SEdward Tomasz Napierala if (is->is_conf.isc_enable == 0 && is->is_conf.isc_discovery == 0) { 414ba165a31SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 415ba165a31SEdward Tomasz Napierala return; 416ba165a31SEdward Tomasz Napierala } 417ba165a31SEdward Tomasz Napierala 418009ea47eSEdward Tomasz Napierala /* 419009ea47eSEdward Tomasz Napierala * Request immediate reconnection from iscsid(8). 420009ea47eSEdward Tomasz Napierala */ 421009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "waking up iscsid(8)"); 422009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = true; 423009ea47eSEdward Tomasz Napierala strlcpy(is->is_reason, "Waiting for iscsid(8)", sizeof(is->is_reason)); 424009ea47eSEdward Tomasz Napierala is->is_timeout = 0; 425009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 426009ea47eSEdward Tomasz Napierala cv_signal(&is->is_softc->sc_cv); 427009ea47eSEdward Tomasz Napierala } 428009ea47eSEdward Tomasz Napierala 429009ea47eSEdward Tomasz Napierala static void 430009ea47eSEdward Tomasz Napierala iscsi_maintenance_thread_terminate(struct iscsi_session *is) 431009ea47eSEdward Tomasz Napierala { 432009ea47eSEdward Tomasz Napierala struct iscsi_softc *sc; 433009ea47eSEdward Tomasz Napierala 434009ea47eSEdward Tomasz Napierala sc = is->is_softc; 435009ea47eSEdward Tomasz Napierala sx_xlock(&sc->sc_lock); 43620e9cab5SAndriy Gapon TAILQ_REMOVE(&sc->sc_sessions, is, is_next); 43720e9cab5SAndriy Gapon sx_xunlock(&sc->sc_lock); 438009ea47eSEdward Tomasz Napierala 439009ea47eSEdward Tomasz Napierala icl_conn_close(is->is_conn); 440674074daSEdward Tomasz Napierala callout_drain(&is->is_callout); 441009ea47eSEdward Tomasz Napierala 442009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 443009ea47eSEdward Tomasz Napierala 444009ea47eSEdward Tomasz Napierala KASSERT(is->is_terminating, ("is_terminating == false")); 445009ea47eSEdward Tomasz Napierala 446009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 447009ea47eSEdward Tomasz Napierala if (is->is_login_pdu != NULL) { 448009ea47eSEdward Tomasz Napierala icl_pdu_free(is->is_login_pdu); 449009ea47eSEdward Tomasz Napierala is->is_login_pdu = NULL; 450009ea47eSEdward Tomasz Napierala } 451009ea47eSEdward Tomasz Napierala cv_signal(&is->is_login_cv); 452009ea47eSEdward Tomasz Napierala #endif 453009ea47eSEdward Tomasz Napierala 454f1f12e40SEdward Tomasz Napierala iscsi_session_cleanup(is, true); 455009ea47eSEdward Tomasz Napierala 456009ea47eSEdward Tomasz Napierala KASSERT(TAILQ_EMPTY(&is->is_outstanding), 457009ea47eSEdward Tomasz Napierala ("destroying session with active tasks")); 45816c158a5SEdward Tomasz Napierala KASSERT(STAILQ_EMPTY(&is->is_postponed), 459009ea47eSEdward Tomasz Napierala ("destroying session with postponed PDUs")); 460009ea47eSEdward Tomasz Napierala 461009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 462009ea47eSEdward Tomasz Napierala 463009ea47eSEdward Tomasz Napierala icl_conn_free(is->is_conn); 464009ea47eSEdward Tomasz Napierala mtx_destroy(&is->is_lock); 465009ea47eSEdward Tomasz Napierala cv_destroy(&is->is_maintenance_cv); 466009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 467009ea47eSEdward Tomasz Napierala cv_destroy(&is->is_login_cv); 468009ea47eSEdward Tomasz Napierala #endif 469481b36c6SSteven Hartland 470009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "terminated"); 471009ea47eSEdward Tomasz Napierala free(is, M_ISCSI); 472009ea47eSEdward Tomasz Napierala 473009ea47eSEdward Tomasz Napierala /* 474009ea47eSEdward Tomasz Napierala * The iscsi_unload() routine might be waiting. 475009ea47eSEdward Tomasz Napierala */ 476009ea47eSEdward Tomasz Napierala cv_signal(&sc->sc_cv); 477009ea47eSEdward Tomasz Napierala } 478009ea47eSEdward Tomasz Napierala 479009ea47eSEdward Tomasz Napierala static void 480009ea47eSEdward Tomasz Napierala iscsi_maintenance_thread(void *arg) 481009ea47eSEdward Tomasz Napierala { 4825b338bc0SAlexander Motin struct iscsi_session *is = arg; 483009ea47eSEdward Tomasz Napierala 484009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 4855b338bc0SAlexander Motin for (;;) { 486009ea47eSEdward Tomasz Napierala if (is->is_reconnecting == false && 487009ea47eSEdward Tomasz Napierala is->is_terminating == false && 4885b338bc0SAlexander Motin (STAILQ_EMPTY(&is->is_postponed) || 4895b338bc0SAlexander Motin ISCSI_SNGT(is->is_cmdsn, is->is_maxcmdsn))) 490009ea47eSEdward Tomasz Napierala cv_wait(&is->is_maintenance_cv, &is->is_lock); 491009ea47eSEdward Tomasz Napierala 492481b36c6SSteven Hartland /* Terminate supersedes reconnect. */ 493009ea47eSEdward Tomasz Napierala if (is->is_terminating) { 494009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 495009ea47eSEdward Tomasz Napierala iscsi_maintenance_thread_terminate(is); 496009ea47eSEdward Tomasz Napierala kthread_exit(); 497009ea47eSEdward Tomasz Napierala return; 498009ea47eSEdward Tomasz Napierala } 499009ea47eSEdward Tomasz Napierala 500481b36c6SSteven Hartland if (is->is_reconnecting) { 501481b36c6SSteven Hartland ISCSI_SESSION_UNLOCK(is); 502481b36c6SSteven Hartland iscsi_maintenance_thread_reconnect(is); 5035b338bc0SAlexander Motin ISCSI_SESSION_LOCK(is); 504481b36c6SSteven Hartland continue; 505481b36c6SSteven Hartland } 506481b36c6SSteven Hartland 507009ea47eSEdward Tomasz Napierala iscsi_session_send_postponed(is); 508009ea47eSEdward Tomasz Napierala } 5095b338bc0SAlexander Motin ISCSI_SESSION_UNLOCK(is); 510009ea47eSEdward Tomasz Napierala } 511009ea47eSEdward Tomasz Napierala 512009ea47eSEdward Tomasz Napierala static void 513009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(struct iscsi_session *is) 514009ea47eSEdward Tomasz Napierala { 515009ea47eSEdward Tomasz Napierala 516009ea47eSEdward Tomasz Napierala /* 517009ea47eSEdward Tomasz Napierala * XXX: We can't use locking here, because 518009ea47eSEdward Tomasz Napierala * it's being called from various contexts. 519009ea47eSEdward Tomasz Napierala * Hope it doesn't break anything. 520009ea47eSEdward Tomasz Napierala */ 521009ea47eSEdward Tomasz Napierala if (is->is_reconnecting) 522009ea47eSEdward Tomasz Napierala return; 523009ea47eSEdward Tomasz Napierala 524009ea47eSEdward Tomasz Napierala is->is_reconnecting = true; 525009ea47eSEdward Tomasz Napierala cv_signal(&is->is_maintenance_cv); 526009ea47eSEdward Tomasz Napierala } 527009ea47eSEdward Tomasz Napierala 528009ea47eSEdward Tomasz Napierala static void 529009ea47eSEdward Tomasz Napierala iscsi_session_terminate(struct iscsi_session *is) 530009ea47eSEdward Tomasz Napierala { 531674074daSEdward Tomasz Napierala 532009ea47eSEdward Tomasz Napierala if (is->is_terminating) 533009ea47eSEdward Tomasz Napierala return; 534009ea47eSEdward Tomasz Napierala 535009ea47eSEdward Tomasz Napierala is->is_terminating = true; 536009ea47eSEdward Tomasz Napierala 537009ea47eSEdward Tomasz Napierala #if 0 538009ea47eSEdward Tomasz Napierala iscsi_session_logout(is); 539009ea47eSEdward Tomasz Napierala #endif 540009ea47eSEdward Tomasz Napierala cv_signal(&is->is_maintenance_cv); 541009ea47eSEdward Tomasz Napierala } 542009ea47eSEdward Tomasz Napierala 543009ea47eSEdward Tomasz Napierala static void 544009ea47eSEdward Tomasz Napierala iscsi_callout(void *context) 545009ea47eSEdward Tomasz Napierala { 546009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 547009ea47eSEdward Tomasz Napierala struct iscsi_bhs_nop_out *bhsno; 548009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 549009ea47eSEdward Tomasz Napierala bool reconnect_needed = false; 550009ea47eSEdward Tomasz Napierala 551009ea47eSEdward Tomasz Napierala is = context; 552009ea47eSEdward Tomasz Napierala 553674074daSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 554674074daSEdward Tomasz Napierala if (is->is_terminating) { 555674074daSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 556009ea47eSEdward Tomasz Napierala return; 557674074daSEdward Tomasz Napierala } 558009ea47eSEdward Tomasz Napierala 559009ea47eSEdward Tomasz Napierala callout_schedule(&is->is_callout, 1 * hz); 560009ea47eSEdward Tomasz Napierala 561ba165a31SEdward Tomasz Napierala if (is->is_conf.isc_enable == 0) 562ba165a31SEdward Tomasz Napierala goto out; 563ba165a31SEdward Tomasz Napierala 564009ea47eSEdward Tomasz Napierala is->is_timeout++; 565009ea47eSEdward Tomasz Napierala 566009ea47eSEdward Tomasz Napierala if (is->is_waiting_for_iscsid) { 5672c5b89e5SEdward Tomasz Napierala if (iscsid_timeout > 0 && is->is_timeout > iscsid_timeout) { 568009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "timed out waiting for iscsid(8) " 569009ea47eSEdward Tomasz Napierala "for %d seconds; reconnecting", 570009ea47eSEdward Tomasz Napierala is->is_timeout); 571009ea47eSEdward Tomasz Napierala reconnect_needed = true; 572009ea47eSEdward Tomasz Napierala } 573009ea47eSEdward Tomasz Napierala goto out; 574009ea47eSEdward Tomasz Napierala } 575009ea47eSEdward Tomasz Napierala 576009ea47eSEdward Tomasz Napierala if (is->is_login_phase) { 5772c5b89e5SEdward Tomasz Napierala if (login_timeout > 0 && is->is_timeout > login_timeout) { 578009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "login timed out after %d seconds; " 579009ea47eSEdward Tomasz Napierala "reconnecting", is->is_timeout); 580009ea47eSEdward Tomasz Napierala reconnect_needed = true; 581009ea47eSEdward Tomasz Napierala } 582009ea47eSEdward Tomasz Napierala goto out; 583009ea47eSEdward Tomasz Napierala } 584009ea47eSEdward Tomasz Napierala 5852c5b89e5SEdward Tomasz Napierala if (ping_timeout <= 0) { 5862c5b89e5SEdward Tomasz Napierala /* 5872c5b89e5SEdward Tomasz Napierala * Pings are disabled. Don't send NOP-Out in this case. 5882c5b89e5SEdward Tomasz Napierala * Reset the timeout, to avoid triggering reconnection, 5892c5b89e5SEdward Tomasz Napierala * should the user decide to reenable them. 5902c5b89e5SEdward Tomasz Napierala */ 5912c5b89e5SEdward Tomasz Napierala is->is_timeout = 0; 5922c5b89e5SEdward Tomasz Napierala goto out; 5932c5b89e5SEdward Tomasz Napierala } 5942c5b89e5SEdward Tomasz Napierala 595009ea47eSEdward Tomasz Napierala if (is->is_timeout >= ping_timeout) { 596009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "no ping reply (NOP-In) after %d seconds; " 597009ea47eSEdward Tomasz Napierala "reconnecting", ping_timeout); 598009ea47eSEdward Tomasz Napierala reconnect_needed = true; 599009ea47eSEdward Tomasz Napierala goto out; 600009ea47eSEdward Tomasz Napierala } 601009ea47eSEdward Tomasz Napierala 602009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 603009ea47eSEdward Tomasz Napierala 604009ea47eSEdward Tomasz Napierala /* 605009ea47eSEdward Tomasz Napierala * If the ping was reset less than one second ago - which means 606009ea47eSEdward Tomasz Napierala * that we've received some PDU during the last second - assume 607009ea47eSEdward Tomasz Napierala * the traffic flows correctly and don't bother sending a NOP-Out. 608009ea47eSEdward Tomasz Napierala * 609009ea47eSEdward Tomasz Napierala * (It's 2 - one for one second, and one for incrementing is_timeout 610009ea47eSEdward Tomasz Napierala * earlier in this routine.) 611009ea47eSEdward Tomasz Napierala */ 612009ea47eSEdward Tomasz Napierala if (is->is_timeout < 2) 613009ea47eSEdward Tomasz Napierala return; 614009ea47eSEdward Tomasz Napierala 615d2d52b00SEdward Tomasz Napierala request = icl_pdu_new(is->is_conn, M_NOWAIT); 61646aaea89SEdward Tomasz Napierala if (request == NULL) { 61746aaea89SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate PDU"); 61846aaea89SEdward Tomasz Napierala return; 61946aaea89SEdward Tomasz Napierala } 620009ea47eSEdward Tomasz Napierala bhsno = (struct iscsi_bhs_nop_out *)request->ip_bhs; 621009ea47eSEdward Tomasz Napierala bhsno->bhsno_opcode = ISCSI_BHS_OPCODE_NOP_OUT | 622009ea47eSEdward Tomasz Napierala ISCSI_BHS_OPCODE_IMMEDIATE; 623009ea47eSEdward Tomasz Napierala bhsno->bhsno_flags = 0x80; 624009ea47eSEdward Tomasz Napierala bhsno->bhsno_target_transfer_tag = 0xffffffff; 625009ea47eSEdward Tomasz Napierala iscsi_pdu_queue(request); 626009ea47eSEdward Tomasz Napierala return; 627009ea47eSEdward Tomasz Napierala 628009ea47eSEdward Tomasz Napierala out: 629481b36c6SSteven Hartland if (is->is_terminating) { 630481b36c6SSteven Hartland ISCSI_SESSION_UNLOCK(is); 631481b36c6SSteven Hartland return; 632481b36c6SSteven Hartland } 633481b36c6SSteven Hartland 634009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 635009ea47eSEdward Tomasz Napierala 636009ea47eSEdward Tomasz Napierala if (reconnect_needed) 637009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 638009ea47eSEdward Tomasz Napierala } 639009ea47eSEdward Tomasz Napierala 640009ea47eSEdward Tomasz Napierala static void 641009ea47eSEdward Tomasz Napierala iscsi_pdu_update_statsn(const struct icl_pdu *response) 642009ea47eSEdward Tomasz Napierala { 643009ea47eSEdward Tomasz Napierala const struct iscsi_bhs_data_in *bhsdi; 644009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 6452124e3b0SAlexander Motin uint32_t expcmdsn, maxcmdsn, statsn; 646009ea47eSEdward Tomasz Napierala 647009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 648009ea47eSEdward Tomasz Napierala 649009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 650009ea47eSEdward Tomasz Napierala 651009ea47eSEdward Tomasz Napierala /* 652009ea47eSEdward Tomasz Napierala * We're only using fields common for all the response 653009ea47eSEdward Tomasz Napierala * (target -> initiator) PDUs. 654009ea47eSEdward Tomasz Napierala */ 655009ea47eSEdward Tomasz Napierala bhsdi = (const struct iscsi_bhs_data_in *)response->ip_bhs; 656009ea47eSEdward Tomasz Napierala /* 657009ea47eSEdward Tomasz Napierala * Ok, I lied. In case of Data-In, "The fields StatSN, Status, 658009ea47eSEdward Tomasz Napierala * and Residual Count only have meaningful content if the S bit 659009ea47eSEdward Tomasz Napierala * is set to 1", so we also need to check the bit specific for 660009ea47eSEdward Tomasz Napierala * Data-In PDU. 661009ea47eSEdward Tomasz Napierala */ 662009ea47eSEdward Tomasz Napierala if (bhsdi->bhsdi_opcode != ISCSI_BHS_OPCODE_SCSI_DATA_IN || 663009ea47eSEdward Tomasz Napierala (bhsdi->bhsdi_flags & BHSDI_FLAGS_S) != 0) { 6642124e3b0SAlexander Motin statsn = ntohl(bhsdi->bhsdi_statsn); 6652124e3b0SAlexander Motin if (statsn != is->is_statsn && statsn != (is->is_statsn + 1)) { 6662124e3b0SAlexander Motin /* XXX: This is normal situation for MCS */ 6672124e3b0SAlexander Motin ISCSI_SESSION_WARN(is, "PDU 0x%x StatSN %u != " 6682124e3b0SAlexander Motin "session ExpStatSN %u (or + 1); reconnecting", 6692124e3b0SAlexander Motin bhsdi->bhsdi_opcode, statsn, is->is_statsn); 6702124e3b0SAlexander Motin iscsi_session_reconnect(is); 671009ea47eSEdward Tomasz Napierala } 6722124e3b0SAlexander Motin if (ISCSI_SNGT(statsn, is->is_statsn)) 6732124e3b0SAlexander Motin is->is_statsn = statsn; 674009ea47eSEdward Tomasz Napierala } 675009ea47eSEdward Tomasz Napierala 676009ea47eSEdward Tomasz Napierala expcmdsn = ntohl(bhsdi->bhsdi_expcmdsn); 677009ea47eSEdward Tomasz Napierala maxcmdsn = ntohl(bhsdi->bhsdi_maxcmdsn); 678009ea47eSEdward Tomasz Napierala 6792124e3b0SAlexander Motin if (ISCSI_SNLT(maxcmdsn + 1, expcmdsn)) { 6802124e3b0SAlexander Motin ISCSI_SESSION_DEBUG(is, 6812124e3b0SAlexander Motin "PDU MaxCmdSN %u + 1 < PDU ExpCmdSN %u; ignoring", 682009ea47eSEdward Tomasz Napierala maxcmdsn, expcmdsn); 683009ea47eSEdward Tomasz Napierala } else { 6842124e3b0SAlexander Motin if (ISCSI_SNGT(maxcmdsn, is->is_maxcmdsn)) { 685009ea47eSEdward Tomasz Napierala is->is_maxcmdsn = maxcmdsn; 686009ea47eSEdward Tomasz Napierala 687009ea47eSEdward Tomasz Napierala /* 688009ea47eSEdward Tomasz Napierala * Command window increased; kick the maintanance thread 689009ea47eSEdward Tomasz Napierala * to send out postponed commands. 690009ea47eSEdward Tomasz Napierala */ 69116c158a5SEdward Tomasz Napierala if (!STAILQ_EMPTY(&is->is_postponed)) 692009ea47eSEdward Tomasz Napierala cv_signal(&is->is_maintenance_cv); 6932124e3b0SAlexander Motin } else if (ISCSI_SNLT(maxcmdsn, is->is_maxcmdsn)) { 6942124e3b0SAlexander Motin /* XXX: This is normal situation for MCS */ 6952124e3b0SAlexander Motin ISCSI_SESSION_DEBUG(is, 6962124e3b0SAlexander Motin "PDU MaxCmdSN %u < session MaxCmdSN %u; ignoring", 697009ea47eSEdward Tomasz Napierala maxcmdsn, is->is_maxcmdsn); 698009ea47eSEdward Tomasz Napierala } 699009ea47eSEdward Tomasz Napierala 7002124e3b0SAlexander Motin if (ISCSI_SNGT(expcmdsn, is->is_expcmdsn)) { 701009ea47eSEdward Tomasz Napierala is->is_expcmdsn = expcmdsn; 7022124e3b0SAlexander Motin } else if (ISCSI_SNLT(expcmdsn, is->is_expcmdsn)) { 7032124e3b0SAlexander Motin /* XXX: This is normal situation for MCS */ 7042124e3b0SAlexander Motin ISCSI_SESSION_DEBUG(is, 7052124e3b0SAlexander Motin "PDU ExpCmdSN %u < session ExpCmdSN %u; ignoring", 706009ea47eSEdward Tomasz Napierala expcmdsn, is->is_expcmdsn); 707009ea47eSEdward Tomasz Napierala } 708009ea47eSEdward Tomasz Napierala } 709009ea47eSEdward Tomasz Napierala 710009ea47eSEdward Tomasz Napierala /* 711009ea47eSEdward Tomasz Napierala * Every incoming PDU - not just NOP-In - resets the ping timer. 712009ea47eSEdward Tomasz Napierala * The purpose of the timeout is to reset the connection when it stalls; 713009ea47eSEdward Tomasz Napierala * we don't want this to happen when NOP-In or NOP-Out ends up delayed 714009ea47eSEdward Tomasz Napierala * in some queue. 715009ea47eSEdward Tomasz Napierala */ 716009ea47eSEdward Tomasz Napierala is->is_timeout = 0; 717009ea47eSEdward Tomasz Napierala } 718009ea47eSEdward Tomasz Napierala 719009ea47eSEdward Tomasz Napierala static void 720009ea47eSEdward Tomasz Napierala iscsi_receive_callback(struct icl_pdu *response) 721009ea47eSEdward Tomasz Napierala { 722009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 723009ea47eSEdward Tomasz Napierala 724009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 725009ea47eSEdward Tomasz Napierala 726009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 727009ea47eSEdward Tomasz Napierala 728d66a906bSEdward Tomasz Napierala iscsi_pdu_update_statsn(response); 729d66a906bSEdward Tomasz Napierala 730009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 731009ea47eSEdward Tomasz Napierala if (is->is_login_phase) { 732009ea47eSEdward Tomasz Napierala if (is->is_login_pdu == NULL) 733009ea47eSEdward Tomasz Napierala is->is_login_pdu = response; 734009ea47eSEdward Tomasz Napierala else 735009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 736009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 737009ea47eSEdward Tomasz Napierala cv_signal(&is->is_login_cv); 738009ea47eSEdward Tomasz Napierala return; 739009ea47eSEdward Tomasz Napierala } 740009ea47eSEdward Tomasz Napierala #endif 741009ea47eSEdward Tomasz Napierala 742009ea47eSEdward Tomasz Napierala /* 743009ea47eSEdward Tomasz Napierala * The handling routine is responsible for freeing the PDU 744009ea47eSEdward Tomasz Napierala * when it's no longer needed. 745009ea47eSEdward Tomasz Napierala */ 746009ea47eSEdward Tomasz Napierala switch (response->ip_bhs->bhs_opcode) { 747009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_NOP_IN: 748009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_nop_in(response); 749c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 750009ea47eSEdward Tomasz Napierala break; 751009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_SCSI_RESPONSE: 752009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_scsi_response(response); 753c215ad3aSAlexander Motin /* Session lock dropped inside. */ 754c215ad3aSAlexander Motin ISCSI_SESSION_LOCK_ASSERT_NOT(is); 755009ea47eSEdward Tomasz Napierala break; 756aa75114cSAlexander Motin case ISCSI_BHS_OPCODE_TASK_RESPONSE: 757aa75114cSAlexander Motin iscsi_pdu_handle_task_response(response); 758c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 759aa75114cSAlexander Motin break; 760009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_SCSI_DATA_IN: 761009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_data_in(response); 762c215ad3aSAlexander Motin /* Session lock dropped inside. */ 763c215ad3aSAlexander Motin ISCSI_SESSION_LOCK_ASSERT_NOT(is); 764009ea47eSEdward Tomasz Napierala break; 765009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_LOGOUT_RESPONSE: 766009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_logout_response(response); 767c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 768009ea47eSEdward Tomasz Napierala break; 769009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_R2T: 770009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_r2t(response); 771c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 772009ea47eSEdward Tomasz Napierala break; 773009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_ASYNC_MESSAGE: 774009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_async_message(response); 775c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 776009ea47eSEdward Tomasz Napierala break; 777009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_REJECT: 778009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_reject(response); 779c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 780009ea47eSEdward Tomasz Napierala break; 781009ea47eSEdward Tomasz Napierala default: 782009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "received PDU with unsupported " 783009ea47eSEdward Tomasz Napierala "opcode 0x%x; reconnecting", 784009ea47eSEdward Tomasz Napierala response->ip_bhs->bhs_opcode); 785009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 786c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 787009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 788009ea47eSEdward Tomasz Napierala } 789009ea47eSEdward Tomasz Napierala } 790009ea47eSEdward Tomasz Napierala 791009ea47eSEdward Tomasz Napierala static void 792009ea47eSEdward Tomasz Napierala iscsi_error_callback(struct icl_conn *ic) 793009ea47eSEdward Tomasz Napierala { 794009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 795009ea47eSEdward Tomasz Napierala 796009ea47eSEdward Tomasz Napierala is = CONN_SESSION(ic); 797009ea47eSEdward Tomasz Napierala 798009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "connection error; reconnecting"); 799009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 800009ea47eSEdward Tomasz Napierala } 801009ea47eSEdward Tomasz Napierala 802009ea47eSEdward Tomasz Napierala static void 803009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_nop_in(struct icl_pdu *response) 804009ea47eSEdward Tomasz Napierala { 8051008ac5eSEdward Tomasz Napierala struct iscsi_session *is; 806009ea47eSEdward Tomasz Napierala struct iscsi_bhs_nop_out *bhsno; 807009ea47eSEdward Tomasz Napierala struct iscsi_bhs_nop_in *bhsni; 808009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 8091008ac5eSEdward Tomasz Napierala void *data = NULL; 8101008ac5eSEdward Tomasz Napierala size_t datasize; 8111008ac5eSEdward Tomasz Napierala int error; 812009ea47eSEdward Tomasz Napierala 8131008ac5eSEdward Tomasz Napierala is = PDU_SESSION(response); 814009ea47eSEdward Tomasz Napierala bhsni = (struct iscsi_bhs_nop_in *)response->ip_bhs; 815009ea47eSEdward Tomasz Napierala 816009ea47eSEdward Tomasz Napierala if (bhsni->bhsni_target_transfer_tag == 0xffffffff) { 817009ea47eSEdward Tomasz Napierala /* 818009ea47eSEdward Tomasz Napierala * Nothing to do; iscsi_pdu_update_statsn() already 819009ea47eSEdward Tomasz Napierala * zeroed the timeout. 820009ea47eSEdward Tomasz Napierala */ 821009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 822009ea47eSEdward Tomasz Napierala return; 823009ea47eSEdward Tomasz Napierala } 824009ea47eSEdward Tomasz Napierala 8251008ac5eSEdward Tomasz Napierala datasize = icl_pdu_data_segment_length(response); 8261008ac5eSEdward Tomasz Napierala if (datasize > 0) { 8271008ac5eSEdward Tomasz Napierala data = malloc(datasize, M_ISCSI, M_NOWAIT | M_ZERO); 8281008ac5eSEdward Tomasz Napierala if (data == NULL) { 8291008ac5eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate memory; " 8301008ac5eSEdward Tomasz Napierala "reconnecting"); 8311008ac5eSEdward Tomasz Napierala icl_pdu_free(response); 8321008ac5eSEdward Tomasz Napierala iscsi_session_reconnect(is); 8331008ac5eSEdward Tomasz Napierala return; 8341008ac5eSEdward Tomasz Napierala } 8351008ac5eSEdward Tomasz Napierala icl_pdu_get_data(response, 0, data, datasize); 8361008ac5eSEdward Tomasz Napierala } 8371008ac5eSEdward Tomasz Napierala 838d2d52b00SEdward Tomasz Napierala request = icl_pdu_new(response->ip_conn, M_NOWAIT); 839009ea47eSEdward Tomasz Napierala if (request == NULL) { 8401008ac5eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate memory; " 8411008ac5eSEdward Tomasz Napierala "reconnecting"); 8421008ac5eSEdward Tomasz Napierala free(data, M_ISCSI); 843009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 8441008ac5eSEdward Tomasz Napierala iscsi_session_reconnect(is); 845009ea47eSEdward Tomasz Napierala return; 846009ea47eSEdward Tomasz Napierala } 847009ea47eSEdward Tomasz Napierala bhsno = (struct iscsi_bhs_nop_out *)request->ip_bhs; 848009ea47eSEdward Tomasz Napierala bhsno->bhsno_opcode = ISCSI_BHS_OPCODE_NOP_OUT | 849009ea47eSEdward Tomasz Napierala ISCSI_BHS_OPCODE_IMMEDIATE; 850009ea47eSEdward Tomasz Napierala bhsno->bhsno_flags = 0x80; 8511008ac5eSEdward Tomasz Napierala bhsno->bhsno_initiator_task_tag = 0xffffffff; 852009ea47eSEdward Tomasz Napierala bhsno->bhsno_target_transfer_tag = bhsni->bhsni_target_transfer_tag; 8531008ac5eSEdward Tomasz Napierala if (datasize > 0) { 8541008ac5eSEdward Tomasz Napierala error = icl_pdu_append_data(request, data, datasize, M_NOWAIT); 8551008ac5eSEdward Tomasz Napierala if (error != 0) { 8561008ac5eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate memory; " 8571008ac5eSEdward Tomasz Napierala "reconnecting"); 8581008ac5eSEdward Tomasz Napierala free(data, M_ISCSI); 8591008ac5eSEdward Tomasz Napierala icl_pdu_free(request); 8601008ac5eSEdward Tomasz Napierala icl_pdu_free(response); 8611008ac5eSEdward Tomasz Napierala iscsi_session_reconnect(is); 8621008ac5eSEdward Tomasz Napierala return; 8631008ac5eSEdward Tomasz Napierala } 8641008ac5eSEdward Tomasz Napierala free(data, M_ISCSI); 8651008ac5eSEdward Tomasz Napierala } 866009ea47eSEdward Tomasz Napierala 867009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 868009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(request); 869009ea47eSEdward Tomasz Napierala } 870009ea47eSEdward Tomasz Napierala 871009ea47eSEdward Tomasz Napierala static void 872009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_scsi_response(struct icl_pdu *response) 873009ea47eSEdward Tomasz Napierala { 874009ea47eSEdward Tomasz Napierala struct iscsi_bhs_scsi_response *bhssr; 875009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io; 876009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 87773e2e95dSAlexander Motin union ccb *ccb; 878009ea47eSEdward Tomasz Napierala struct ccb_scsiio *csio; 87973e2e95dSAlexander Motin size_t data_segment_len, received; 880009ea47eSEdward Tomasz Napierala uint16_t sense_len; 881bcec64bcSEdward Tomasz Napierala uint32_t resid; 882009ea47eSEdward Tomasz Napierala 883009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 884009ea47eSEdward Tomasz Napierala 885009ea47eSEdward Tomasz Napierala bhssr = (struct iscsi_bhs_scsi_response *)response->ip_bhs; 886009ea47eSEdward Tomasz Napierala io = iscsi_outstanding_find(is, bhssr->bhssr_initiator_task_tag); 887aa75114cSAlexander Motin if (io == NULL || io->io_ccb == NULL) { 888009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "bad itt 0x%x", bhssr->bhssr_initiator_task_tag); 889009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 890009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 891c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 892009ea47eSEdward Tomasz Napierala return; 893009ea47eSEdward Tomasz Napierala } 894009ea47eSEdward Tomasz Napierala 89573e2e95dSAlexander Motin ccb = io->io_ccb; 896bcec64bcSEdward Tomasz Napierala 897bcec64bcSEdward Tomasz Napierala /* 898bcec64bcSEdward Tomasz Napierala * With iSER, after getting good response we can be sure 899bcec64bcSEdward Tomasz Napierala * that all the data has been successfully transferred. 900bcec64bcSEdward Tomasz Napierala */ 901bcec64bcSEdward Tomasz Napierala if (is->is_conn->ic_iser) { 902bcec64bcSEdward Tomasz Napierala resid = ntohl(bhssr->bhssr_residual_count); 903bcec64bcSEdward Tomasz Napierala if (bhssr->bhssr_flags & BHSSR_FLAGS_RESIDUAL_UNDERFLOW) { 904bcec64bcSEdward Tomasz Napierala io->io_received = ccb->csio.dxfer_len - resid; 905bcec64bcSEdward Tomasz Napierala } else if (bhssr->bhssr_flags & BHSSR_FLAGS_RESIDUAL_OVERFLOW) { 906bcec64bcSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "overflow: target indicates %d", resid); 907bcec64bcSEdward Tomasz Napierala } else { 908bcec64bcSEdward Tomasz Napierala io->io_received = ccb->csio.dxfer_len; 909bcec64bcSEdward Tomasz Napierala } 910bcec64bcSEdward Tomasz Napierala } 911bcec64bcSEdward Tomasz Napierala 91273e2e95dSAlexander Motin received = io->io_received; 913c215ad3aSAlexander Motin iscsi_outstanding_remove(is, io); 914c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 915c215ad3aSAlexander Motin 916009ea47eSEdward Tomasz Napierala if (bhssr->bhssr_response != BHSSR_RESPONSE_COMMAND_COMPLETED) { 917009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "service response 0x%x", bhssr->bhssr_response); 91873e2e95dSAlexander Motin if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 91973e2e95dSAlexander Motin xpt_freeze_devq(ccb->ccb_h.path, 1); 920009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 921009ea47eSEdward Tomasz Napierala } 92273e2e95dSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP_ERR | CAM_DEV_QFRZN; 923009ea47eSEdward Tomasz Napierala } else if (bhssr->bhssr_status == 0) { 92473e2e95dSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP; 925009ea47eSEdward Tomasz Napierala } else { 92673e2e95dSAlexander Motin if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 92773e2e95dSAlexander Motin xpt_freeze_devq(ccb->ccb_h.path, 1); 928009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 929009ea47eSEdward Tomasz Napierala } 93073e2e95dSAlexander Motin ccb->ccb_h.status = CAM_SCSI_STATUS_ERROR | CAM_DEV_QFRZN; 93173e2e95dSAlexander Motin ccb->csio.scsi_status = bhssr->bhssr_status; 932009ea47eSEdward Tomasz Napierala } 933009ea47eSEdward Tomasz Napierala 93473e2e95dSAlexander Motin csio = &ccb->csio; 935009ea47eSEdward Tomasz Napierala data_segment_len = icl_pdu_data_segment_length(response); 936009ea47eSEdward Tomasz Napierala if (data_segment_len > 0) { 937009ea47eSEdward Tomasz Napierala if (data_segment_len < sizeof(sense_len)) { 938009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "truncated data segment (%zd bytes)", 939009ea47eSEdward Tomasz Napierala data_segment_len); 94073e2e95dSAlexander Motin if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 94173e2e95dSAlexander Motin xpt_freeze_devq(ccb->ccb_h.path, 1); 942009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 943009ea47eSEdward Tomasz Napierala } 94473e2e95dSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP_ERR | CAM_DEV_QFRZN; 945009ea47eSEdward Tomasz Napierala goto out; 946009ea47eSEdward Tomasz Napierala } 947009ea47eSEdward Tomasz Napierala icl_pdu_get_data(response, 0, &sense_len, sizeof(sense_len)); 948009ea47eSEdward Tomasz Napierala sense_len = ntohs(sense_len); 949009ea47eSEdward Tomasz Napierala #if 0 950009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "sense_len %d, data len %zd", 951009ea47eSEdward Tomasz Napierala sense_len, data_segment_len); 952009ea47eSEdward Tomasz Napierala #endif 953009ea47eSEdward Tomasz Napierala if (sizeof(sense_len) + sense_len > data_segment_len) { 954009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "truncated data segment " 955009ea47eSEdward Tomasz Napierala "(%zd bytes, should be %zd)", 956009ea47eSEdward Tomasz Napierala data_segment_len, sizeof(sense_len) + sense_len); 95773e2e95dSAlexander Motin if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 95873e2e95dSAlexander Motin xpt_freeze_devq(ccb->ccb_h.path, 1); 959009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 960009ea47eSEdward Tomasz Napierala } 96173e2e95dSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP_ERR | CAM_DEV_QFRZN; 962009ea47eSEdward Tomasz Napierala goto out; 963009ea47eSEdward Tomasz Napierala } else if (sizeof(sense_len) + sense_len < data_segment_len) 964009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "oversize data segment " 965009ea47eSEdward Tomasz Napierala "(%zd bytes, should be %zd)", 966009ea47eSEdward Tomasz Napierala data_segment_len, sizeof(sense_len) + sense_len); 967009ea47eSEdward Tomasz Napierala if (sense_len > csio->sense_len) { 968009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "truncating sense from %d to %d", 969009ea47eSEdward Tomasz Napierala sense_len, csio->sense_len); 970009ea47eSEdward Tomasz Napierala sense_len = csio->sense_len; 971009ea47eSEdward Tomasz Napierala } 972009ea47eSEdward Tomasz Napierala icl_pdu_get_data(response, sizeof(sense_len), &csio->sense_data, sense_len); 973009ea47eSEdward Tomasz Napierala csio->sense_resid = csio->sense_len - sense_len; 97473e2e95dSAlexander Motin ccb->ccb_h.status |= CAM_AUTOSNS_VALID; 975009ea47eSEdward Tomasz Napierala } 976009ea47eSEdward Tomasz Napierala 977009ea47eSEdward Tomasz Napierala out: 978009ea47eSEdward Tomasz Napierala if (bhssr->bhssr_flags & BHSSR_FLAGS_RESIDUAL_UNDERFLOW) 979009ea47eSEdward Tomasz Napierala csio->resid = ntohl(bhssr->bhssr_residual_count); 980009ea47eSEdward Tomasz Napierala 981009ea47eSEdward Tomasz Napierala if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) { 98273e2e95dSAlexander Motin KASSERT(received <= csio->dxfer_len, 98373e2e95dSAlexander Motin ("received > csio->dxfer_len")); 98473e2e95dSAlexander Motin if (received < csio->dxfer_len) { 98573e2e95dSAlexander Motin if (csio->resid != csio->dxfer_len - received) { 986009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "underflow mismatch: " 987009ea47eSEdward Tomasz Napierala "target indicates %d, we calculated %zd", 98873e2e95dSAlexander Motin csio->resid, csio->dxfer_len - received); 989009ea47eSEdward Tomasz Napierala } 99073e2e95dSAlexander Motin csio->resid = csio->dxfer_len - received; 991009ea47eSEdward Tomasz Napierala } 992009ea47eSEdward Tomasz Napierala } 993009ea47eSEdward Tomasz Napierala 99473e2e95dSAlexander Motin xpt_done(ccb); 995009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 996009ea47eSEdward Tomasz Napierala } 997009ea47eSEdward Tomasz Napierala 998009ea47eSEdward Tomasz Napierala static void 999aa75114cSAlexander Motin iscsi_pdu_handle_task_response(struct icl_pdu *response) 1000aa75114cSAlexander Motin { 1001aa75114cSAlexander Motin struct iscsi_bhs_task_management_response *bhstmr; 1002aa75114cSAlexander Motin struct iscsi_outstanding *io, *aio; 1003aa75114cSAlexander Motin struct iscsi_session *is; 1004aa75114cSAlexander Motin 1005aa75114cSAlexander Motin is = PDU_SESSION(response); 1006aa75114cSAlexander Motin 1007aa75114cSAlexander Motin bhstmr = (struct iscsi_bhs_task_management_response *)response->ip_bhs; 1008aa75114cSAlexander Motin io = iscsi_outstanding_find(is, bhstmr->bhstmr_initiator_task_tag); 1009aa75114cSAlexander Motin if (io == NULL || io->io_ccb != NULL) { 1010aa75114cSAlexander Motin ISCSI_SESSION_WARN(is, "bad itt 0x%x", 1011aa75114cSAlexander Motin bhstmr->bhstmr_initiator_task_tag); 1012aa75114cSAlexander Motin icl_pdu_free(response); 1013aa75114cSAlexander Motin iscsi_session_reconnect(is); 1014aa75114cSAlexander Motin return; 1015aa75114cSAlexander Motin } 1016aa75114cSAlexander Motin 1017aa75114cSAlexander Motin if (bhstmr->bhstmr_response != BHSTMR_RESPONSE_FUNCTION_COMPLETE) { 1018aa75114cSAlexander Motin ISCSI_SESSION_WARN(is, "task response 0x%x", 1019aa75114cSAlexander Motin bhstmr->bhstmr_response); 1020aa75114cSAlexander Motin } else { 1021aa75114cSAlexander Motin aio = iscsi_outstanding_find(is, io->io_datasn); 1022aa75114cSAlexander Motin if (aio != NULL && aio->io_ccb != NULL) 1023ad10496cSAndriy Gapon iscsi_session_terminate_task(is, aio, CAM_REQ_ABORTED); 1024aa75114cSAlexander Motin } 1025aa75114cSAlexander Motin 1026aa75114cSAlexander Motin iscsi_outstanding_remove(is, io); 1027aa75114cSAlexander Motin icl_pdu_free(response); 1028aa75114cSAlexander Motin } 1029aa75114cSAlexander Motin 1030aa75114cSAlexander Motin static void 1031009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_data_in(struct icl_pdu *response) 1032009ea47eSEdward Tomasz Napierala { 1033009ea47eSEdward Tomasz Napierala struct iscsi_bhs_data_in *bhsdi; 1034009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io; 1035009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 103673e2e95dSAlexander Motin union ccb *ccb; 1037009ea47eSEdward Tomasz Napierala struct ccb_scsiio *csio; 103873e2e95dSAlexander Motin size_t data_segment_len, received, oreceived; 1039009ea47eSEdward Tomasz Napierala 1040009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 1041009ea47eSEdward Tomasz Napierala bhsdi = (struct iscsi_bhs_data_in *)response->ip_bhs; 1042009ea47eSEdward Tomasz Napierala io = iscsi_outstanding_find(is, bhsdi->bhsdi_initiator_task_tag); 1043aa75114cSAlexander Motin if (io == NULL || io->io_ccb == NULL) { 1044009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "bad itt 0x%x", bhsdi->bhsdi_initiator_task_tag); 1045009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1046009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1047c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 1048009ea47eSEdward Tomasz Napierala return; 1049009ea47eSEdward Tomasz Napierala } 1050009ea47eSEdward Tomasz Napierala 1051009ea47eSEdward Tomasz Napierala data_segment_len = icl_pdu_data_segment_length(response); 1052009ea47eSEdward Tomasz Napierala if (data_segment_len == 0) { 1053009ea47eSEdward Tomasz Napierala /* 1054009ea47eSEdward Tomasz Napierala * "The sending of 0 length data segments should be avoided, 1055009ea47eSEdward Tomasz Napierala * but initiators and targets MUST be able to properly receive 1056009ea47eSEdward Tomasz Napierala * 0 length data segments." 1057009ea47eSEdward Tomasz Napierala */ 1058c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 1059009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1060009ea47eSEdward Tomasz Napierala return; 1061009ea47eSEdward Tomasz Napierala } 1062009ea47eSEdward Tomasz Napierala 1063009ea47eSEdward Tomasz Napierala /* 1064009ea47eSEdward Tomasz Napierala * We need to track this for security reasons - without it, malicious target 1065009ea47eSEdward Tomasz Napierala * could respond to SCSI READ without sending Data-In PDUs, which would result 1066009ea47eSEdward Tomasz Napierala * in read operation on the initiator side returning random kernel data. 1067009ea47eSEdward Tomasz Napierala */ 1068009ea47eSEdward Tomasz Napierala if (ntohl(bhsdi->bhsdi_buffer_offset) != io->io_received) { 1069009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "data out of order; expected offset %zd, got %zd", 1070009ea47eSEdward Tomasz Napierala io->io_received, (size_t)ntohl(bhsdi->bhsdi_buffer_offset)); 1071009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1072009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1073c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 1074009ea47eSEdward Tomasz Napierala return; 1075009ea47eSEdward Tomasz Napierala } 1076009ea47eSEdward Tomasz Napierala 107773e2e95dSAlexander Motin ccb = io->io_ccb; 107873e2e95dSAlexander Motin csio = &ccb->csio; 1079009ea47eSEdward Tomasz Napierala 1080d43c9ec1SEdward Tomasz Napierala if (io->io_received + data_segment_len > csio->dxfer_len) { 1081009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "oversize data segment (%zd bytes " 1082d43c9ec1SEdward Tomasz Napierala "at offset %zd, buffer is %d)", 1083d43c9ec1SEdward Tomasz Napierala data_segment_len, io->io_received, csio->dxfer_len); 1084009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1085009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1086c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 1087009ea47eSEdward Tomasz Napierala return; 1088009ea47eSEdward Tomasz Napierala } 1089009ea47eSEdward Tomasz Napierala 109073e2e95dSAlexander Motin oreceived = io->io_received; 1091009ea47eSEdward Tomasz Napierala io->io_received += data_segment_len; 109273e2e95dSAlexander Motin received = io->io_received; 1093c215ad3aSAlexander Motin if ((bhsdi->bhsdi_flags & BHSDI_FLAGS_S) != 0) 1094c215ad3aSAlexander Motin iscsi_outstanding_remove(is, io); 1095c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 1096c215ad3aSAlexander Motin 109773e2e95dSAlexander Motin icl_pdu_get_data(response, 0, csio->data_ptr + oreceived, data_segment_len); 1098009ea47eSEdward Tomasz Napierala 1099009ea47eSEdward Tomasz Napierala /* 1100009ea47eSEdward Tomasz Napierala * XXX: Check DataSN. 1101009ea47eSEdward Tomasz Napierala * XXX: Check F. 1102009ea47eSEdward Tomasz Napierala */ 110369647b7bSEdward Tomasz Napierala if ((bhsdi->bhsdi_flags & BHSDI_FLAGS_S) == 0) { 110469647b7bSEdward Tomasz Napierala /* 110569647b7bSEdward Tomasz Napierala * Nothing more to do. 110669647b7bSEdward Tomasz Napierala */ 110769647b7bSEdward Tomasz Napierala icl_pdu_free(response); 110869647b7bSEdward Tomasz Napierala return; 110969647b7bSEdward Tomasz Napierala } 111069647b7bSEdward Tomasz Napierala 1111009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "got S flag; status 0x%x", bhsdi->bhsdi_status); 1112009ea47eSEdward Tomasz Napierala if (bhsdi->bhsdi_status == 0) { 111373e2e95dSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP; 1114009ea47eSEdward Tomasz Napierala } else { 111573e2e95dSAlexander Motin if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 111673e2e95dSAlexander Motin xpt_freeze_devq(ccb->ccb_h.path, 1); 1117009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 1118009ea47eSEdward Tomasz Napierala } 111973e2e95dSAlexander Motin ccb->ccb_h.status = CAM_SCSI_STATUS_ERROR | CAM_DEV_QFRZN; 1120009ea47eSEdward Tomasz Napierala csio->scsi_status = bhsdi->bhsdi_status; 1121009ea47eSEdward Tomasz Napierala } 112269647b7bSEdward Tomasz Napierala 112369647b7bSEdward Tomasz Napierala if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) { 112473e2e95dSAlexander Motin KASSERT(received <= csio->dxfer_len, 112573e2e95dSAlexander Motin ("received > csio->dxfer_len")); 112673e2e95dSAlexander Motin if (received < csio->dxfer_len) { 112769647b7bSEdward Tomasz Napierala csio->resid = ntohl(bhsdi->bhsdi_residual_count); 112873e2e95dSAlexander Motin if (csio->resid != csio->dxfer_len - received) { 112969647b7bSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "underflow mismatch: " 113069647b7bSEdward Tomasz Napierala "target indicates %d, we calculated %zd", 113173e2e95dSAlexander Motin csio->resid, csio->dxfer_len - received); 113269647b7bSEdward Tomasz Napierala } 113373e2e95dSAlexander Motin csio->resid = csio->dxfer_len - received; 113469647b7bSEdward Tomasz Napierala } 1135009ea47eSEdward Tomasz Napierala } 1136009ea47eSEdward Tomasz Napierala 113773e2e95dSAlexander Motin xpt_done(ccb); 1138009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1139009ea47eSEdward Tomasz Napierala } 1140009ea47eSEdward Tomasz Napierala 1141009ea47eSEdward Tomasz Napierala static void 1142009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_logout_response(struct icl_pdu *response) 1143009ea47eSEdward Tomasz Napierala { 1144009ea47eSEdward Tomasz Napierala 1145009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(PDU_SESSION(response), "logout response"); 1146009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1147009ea47eSEdward Tomasz Napierala } 1148009ea47eSEdward Tomasz Napierala 1149009ea47eSEdward Tomasz Napierala static void 1150009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_r2t(struct icl_pdu *response) 1151009ea47eSEdward Tomasz Napierala { 1152009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 1153009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1154009ea47eSEdward Tomasz Napierala struct iscsi_bhs_r2t *bhsr2t; 1155009ea47eSEdward Tomasz Napierala struct iscsi_bhs_data_out *bhsdo; 1156009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io; 1157009ea47eSEdward Tomasz Napierala struct ccb_scsiio *csio; 1158009ea47eSEdward Tomasz Napierala size_t off, len, total_len; 1159009ea47eSEdward Tomasz Napierala int error; 1160009ea47eSEdward Tomasz Napierala 1161009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 1162009ea47eSEdward Tomasz Napierala 1163009ea47eSEdward Tomasz Napierala bhsr2t = (struct iscsi_bhs_r2t *)response->ip_bhs; 1164009ea47eSEdward Tomasz Napierala io = iscsi_outstanding_find(is, bhsr2t->bhsr2t_initiator_task_tag); 1165aa75114cSAlexander Motin if (io == NULL || io->io_ccb == NULL) { 1166009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "bad itt 0x%x; reconnecting", 1167009ea47eSEdward Tomasz Napierala bhsr2t->bhsr2t_initiator_task_tag); 1168009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1169009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1170009ea47eSEdward Tomasz Napierala return; 1171009ea47eSEdward Tomasz Napierala } 1172009ea47eSEdward Tomasz Napierala 1173009ea47eSEdward Tomasz Napierala csio = &io->io_ccb->csio; 1174009ea47eSEdward Tomasz Napierala 1175009ea47eSEdward Tomasz Napierala if ((csio->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_OUT) { 1176009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "received R2T for read command; reconnecting"); 1177009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1178009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1179009ea47eSEdward Tomasz Napierala return; 1180009ea47eSEdward Tomasz Napierala } 1181009ea47eSEdward Tomasz Napierala 1182009ea47eSEdward Tomasz Napierala /* 1183009ea47eSEdward Tomasz Napierala * XXX: Verify R2TSN. 1184009ea47eSEdward Tomasz Napierala */ 1185009ea47eSEdward Tomasz Napierala 1186009ea47eSEdward Tomasz Napierala io->io_datasn = 0; 1187d43c9ec1SEdward Tomasz Napierala 1188009ea47eSEdward Tomasz Napierala off = ntohl(bhsr2t->bhsr2t_buffer_offset); 1189d43c9ec1SEdward Tomasz Napierala if (off > csio->dxfer_len) { 1190d43c9ec1SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target requested invalid offset " 1191d43c9ec1SEdward Tomasz Napierala "%zd, buffer is is %d; reconnecting", off, csio->dxfer_len); 1192d43c9ec1SEdward Tomasz Napierala icl_pdu_free(response); 1193d43c9ec1SEdward Tomasz Napierala iscsi_session_reconnect(is); 1194d43c9ec1SEdward Tomasz Napierala return; 1195d43c9ec1SEdward Tomasz Napierala } 1196d43c9ec1SEdward Tomasz Napierala 1197009ea47eSEdward Tomasz Napierala total_len = ntohl(bhsr2t->bhsr2t_desired_data_transfer_length); 1198d43c9ec1SEdward Tomasz Napierala if (total_len == 0 || total_len > csio->dxfer_len) { 1199d43c9ec1SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target requested invalid length " 1200d43c9ec1SEdward Tomasz Napierala "%zd, buffer is %d; reconnecting", total_len, csio->dxfer_len); 1201d43c9ec1SEdward Tomasz Napierala icl_pdu_free(response); 1202d43c9ec1SEdward Tomasz Napierala iscsi_session_reconnect(is); 1203d43c9ec1SEdward Tomasz Napierala return; 1204d43c9ec1SEdward Tomasz Napierala } 1205009ea47eSEdward Tomasz Napierala 1206009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "r2t; off %zd, len %zd", off, total_len); 1207009ea47eSEdward Tomasz Napierala 1208009ea47eSEdward Tomasz Napierala for (;;) { 1209009ea47eSEdward Tomasz Napierala len = total_len; 1210009ea47eSEdward Tomasz Napierala 121197b84d34SNavdeep Parhar if (len > is->is_max_send_data_segment_length) 121297b84d34SNavdeep Parhar len = is->is_max_send_data_segment_length; 1213009ea47eSEdward Tomasz Napierala 1214009ea47eSEdward Tomasz Napierala if (off + len > csio->dxfer_len) { 1215d43c9ec1SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target requested invalid " 1216d43c9ec1SEdward Tomasz Napierala "length/offset %zd, buffer is %d; reconnecting", 1217009ea47eSEdward Tomasz Napierala off + len, csio->dxfer_len); 1218009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1219009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1220009ea47eSEdward Tomasz Napierala return; 1221009ea47eSEdward Tomasz Napierala } 1222009ea47eSEdward Tomasz Napierala 1223d2d52b00SEdward Tomasz Napierala request = icl_pdu_new(response->ip_conn, M_NOWAIT); 1224009ea47eSEdward Tomasz Napierala if (request == NULL) { 1225009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1226009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1227009ea47eSEdward Tomasz Napierala return; 1228009ea47eSEdward Tomasz Napierala } 1229009ea47eSEdward Tomasz Napierala 1230009ea47eSEdward Tomasz Napierala bhsdo = (struct iscsi_bhs_data_out *)request->ip_bhs; 1231009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_opcode = ISCSI_BHS_OPCODE_SCSI_DATA_OUT; 1232009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_lun = bhsr2t->bhsr2t_lun; 1233009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_initiator_task_tag = 1234009ea47eSEdward Tomasz Napierala bhsr2t->bhsr2t_initiator_task_tag; 1235009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_target_transfer_tag = 1236009ea47eSEdward Tomasz Napierala bhsr2t->bhsr2t_target_transfer_tag; 1237009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_datasn = htonl(io->io_datasn++); 1238009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_buffer_offset = htonl(off); 1239d43c9ec1SEdward Tomasz Napierala error = icl_pdu_append_data(request, csio->data_ptr + off, len, 1240d43c9ec1SEdward Tomasz Napierala M_NOWAIT); 1241009ea47eSEdward Tomasz Napierala if (error != 0) { 1242d43c9ec1SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate memory; " 1243d43c9ec1SEdward Tomasz Napierala "reconnecting"); 1244009ea47eSEdward Tomasz Napierala icl_pdu_free(request); 1245009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1246009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1247009ea47eSEdward Tomasz Napierala return; 1248009ea47eSEdward Tomasz Napierala } 1249009ea47eSEdward Tomasz Napierala 1250009ea47eSEdward Tomasz Napierala off += len; 1251009ea47eSEdward Tomasz Napierala total_len -= len; 1252009ea47eSEdward Tomasz Napierala 1253009ea47eSEdward Tomasz Napierala if (total_len == 0) { 1254009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_flags |= BHSDO_FLAGS_F; 1255009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "setting F, off %zd", off); 1256009ea47eSEdward Tomasz Napierala } else { 1257009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "not finished, off %zd", off); 1258009ea47eSEdward Tomasz Napierala } 1259009ea47eSEdward Tomasz Napierala 1260009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(request); 1261009ea47eSEdward Tomasz Napierala 1262009ea47eSEdward Tomasz Napierala if (total_len == 0) 1263009ea47eSEdward Tomasz Napierala break; 1264009ea47eSEdward Tomasz Napierala } 1265009ea47eSEdward Tomasz Napierala 1266009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1267009ea47eSEdward Tomasz Napierala } 1268009ea47eSEdward Tomasz Napierala 1269009ea47eSEdward Tomasz Napierala static void 1270009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_async_message(struct icl_pdu *response) 1271009ea47eSEdward Tomasz Napierala { 1272009ea47eSEdward Tomasz Napierala struct iscsi_bhs_asynchronous_message *bhsam; 1273009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1274009ea47eSEdward Tomasz Napierala 1275009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 1276009ea47eSEdward Tomasz Napierala bhsam = (struct iscsi_bhs_asynchronous_message *)response->ip_bhs; 1277009ea47eSEdward Tomasz Napierala switch (bhsam->bhsam_async_event) { 1278009ea47eSEdward Tomasz Napierala case BHSAM_EVENT_TARGET_REQUESTS_LOGOUT: 1279009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target requests logout; removing session"); 1280009ea47eSEdward Tomasz Napierala iscsi_session_logout(is); 1281009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1282009ea47eSEdward Tomasz Napierala break; 1283009ea47eSEdward Tomasz Napierala case BHSAM_EVENT_TARGET_TERMINATES_CONNECTION: 1284009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target indicates it will drop drop the connection"); 1285009ea47eSEdward Tomasz Napierala break; 1286009ea47eSEdward Tomasz Napierala case BHSAM_EVENT_TARGET_TERMINATES_SESSION: 1287009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target indicates it will drop drop the session"); 1288009ea47eSEdward Tomasz Napierala break; 1289009ea47eSEdward Tomasz Napierala default: 1290009ea47eSEdward Tomasz Napierala /* 1291009ea47eSEdward Tomasz Napierala * XXX: Technically, we're obligated to also handle 1292009ea47eSEdward Tomasz Napierala * parameter renegotiation. 1293009ea47eSEdward Tomasz Napierala */ 1294009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "ignoring AsyncEvent %d", bhsam->bhsam_async_event); 1295009ea47eSEdward Tomasz Napierala break; 1296009ea47eSEdward Tomasz Napierala } 1297009ea47eSEdward Tomasz Napierala 1298009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1299009ea47eSEdward Tomasz Napierala } 1300009ea47eSEdward Tomasz Napierala 1301009ea47eSEdward Tomasz Napierala static void 1302009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_reject(struct icl_pdu *response) 1303009ea47eSEdward Tomasz Napierala { 1304009ea47eSEdward Tomasz Napierala struct iscsi_bhs_reject *bhsr; 1305009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1306009ea47eSEdward Tomasz Napierala 1307009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 1308009ea47eSEdward Tomasz Napierala bhsr = (struct iscsi_bhs_reject *)response->ip_bhs; 1309009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "received Reject PDU, reason 0x%x; protocol error?", 1310009ea47eSEdward Tomasz Napierala bhsr->bhsr_reason); 1311009ea47eSEdward Tomasz Napierala 1312009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1313009ea47eSEdward Tomasz Napierala } 1314009ea47eSEdward Tomasz Napierala 1315009ea47eSEdward Tomasz Napierala static int 1316009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_wait(struct iscsi_softc *sc, 1317009ea47eSEdward Tomasz Napierala struct iscsi_daemon_request *request) 1318009ea47eSEdward Tomasz Napierala { 1319009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 132097b84d34SNavdeep Parhar struct icl_drv_limits idl; 1321009ea47eSEdward Tomasz Napierala int error; 1322009ea47eSEdward Tomasz Napierala 1323009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1324009ea47eSEdward Tomasz Napierala for (;;) { 1325009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 13262be596adSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1327ba165a31SEdward Tomasz Napierala if (is->is_conf.isc_enable == 0 && 1328ba165a31SEdward Tomasz Napierala is->is_conf.isc_discovery == 0) { 1329ba165a31SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1330ba165a31SEdward Tomasz Napierala continue; 1331ba165a31SEdward Tomasz Napierala } 1332009ea47eSEdward Tomasz Napierala if (is->is_waiting_for_iscsid) 1333009ea47eSEdward Tomasz Napierala break; 13342be596adSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1335009ea47eSEdward Tomasz Napierala } 1336009ea47eSEdward Tomasz Napierala 1337009ea47eSEdward Tomasz Napierala if (is == NULL) { 1338009ea47eSEdward Tomasz Napierala /* 1339009ea47eSEdward Tomasz Napierala * No session requires attention from iscsid(8); wait. 1340009ea47eSEdward Tomasz Napierala */ 1341009ea47eSEdward Tomasz Napierala error = cv_wait_sig(&sc->sc_cv, &sc->sc_lock); 1342009ea47eSEdward Tomasz Napierala if (error != 0) { 1343009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1344009ea47eSEdward Tomasz Napierala return (error); 1345009ea47eSEdward Tomasz Napierala } 1346009ea47eSEdward Tomasz Napierala continue; 1347009ea47eSEdward Tomasz Napierala } 1348009ea47eSEdward Tomasz Napierala 1349009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = false; 1350009ea47eSEdward Tomasz Napierala is->is_login_phase = true; 1351009ea47eSEdward Tomasz Napierala is->is_reason[0] = '\0'; 1352009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1353009ea47eSEdward Tomasz Napierala 1354009ea47eSEdward Tomasz Napierala request->idr_session_id = is->is_id; 1355ffe82e05SAlexander Motin memcpy(&request->idr_isid, &is->is_isid, 1356ffe82e05SAlexander Motin sizeof(request->idr_isid)); 1357ffe82e05SAlexander Motin request->idr_tsih = 0; /* New or reinstated session. */ 1358009ea47eSEdward Tomasz Napierala memcpy(&request->idr_conf, &is->is_conf, 1359009ea47eSEdward Tomasz Napierala sizeof(request->idr_conf)); 1360009ea47eSEdward Tomasz Napierala 136182babffbSEdward Tomasz Napierala error = icl_limits(is->is_conf.isc_offload, 136297b84d34SNavdeep Parhar is->is_conf.isc_iser, &idl); 136382babffbSEdward Tomasz Napierala if (error != 0) { 136482babffbSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "icl_limits for offload \"%s\" " 136582babffbSEdward Tomasz Napierala "failed with error %d", is->is_conf.isc_offload, 136682babffbSEdward Tomasz Napierala error); 136782babffbSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 136882babffbSEdward Tomasz Napierala return (error); 136982babffbSEdward Tomasz Napierala } 137097b84d34SNavdeep Parhar request->idr_limits.isl_max_recv_data_segment_length = 137197b84d34SNavdeep Parhar idl.idl_max_recv_data_segment_length; 137297b84d34SNavdeep Parhar request->idr_limits.isl_max_send_data_segment_length = 137348214203SNavdeep Parhar idl.idl_max_send_data_segment_length; 137497b84d34SNavdeep Parhar request->idr_limits.isl_max_burst_length = 137597b84d34SNavdeep Parhar idl.idl_max_burst_length; 137697b84d34SNavdeep Parhar request->idr_limits.isl_first_burst_length = 137797b84d34SNavdeep Parhar idl.idl_first_burst_length; 137882babffbSEdward Tomasz Napierala 1379009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1380009ea47eSEdward Tomasz Napierala return (0); 1381009ea47eSEdward Tomasz Napierala } 1382009ea47eSEdward Tomasz Napierala } 1383009ea47eSEdward Tomasz Napierala 1384009ea47eSEdward Tomasz Napierala static int 1385009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_handoff(struct iscsi_softc *sc, 1386009ea47eSEdward Tomasz Napierala struct iscsi_daemon_handoff *handoff) 1387009ea47eSEdward Tomasz Napierala { 1388009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1389f5cadbc4SNavdeep Parhar struct icl_conn *ic; 1390009ea47eSEdward Tomasz Napierala int error; 1391009ea47eSEdward Tomasz Napierala 1392009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1393009ea47eSEdward Tomasz Napierala 1394009ea47eSEdward Tomasz Napierala /* 1395009ea47eSEdward Tomasz Napierala * Find the session to hand off socket to. 1396009ea47eSEdward Tomasz Napierala */ 1397009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1398009ea47eSEdward Tomasz Napierala if (is->is_id == handoff->idh_session_id) 1399009ea47eSEdward Tomasz Napierala break; 1400009ea47eSEdward Tomasz Napierala } 1401009ea47eSEdward Tomasz Napierala if (is == NULL) { 1402009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1403009ea47eSEdward Tomasz Napierala return (ESRCH); 1404009ea47eSEdward Tomasz Napierala } 1405009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1406f5cadbc4SNavdeep Parhar ic = is->is_conn; 1407009ea47eSEdward Tomasz Napierala if (is->is_conf.isc_discovery || is->is_terminating) { 1408009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1409009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1410009ea47eSEdward Tomasz Napierala return (EINVAL); 1411009ea47eSEdward Tomasz Napierala } 14120260023fSEdward Tomasz Napierala if (is->is_connected) { 14130260023fSEdward Tomasz Napierala /* 14140260023fSEdward Tomasz Napierala * This might have happened because another iscsid(8) 14150260023fSEdward Tomasz Napierala * instance handed off the connection in the meantime. 14160260023fSEdward Tomasz Napierala * Just return. 14170260023fSEdward Tomasz Napierala */ 14180260023fSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "handoff on already connected " 14190260023fSEdward Tomasz Napierala "session"); 14200260023fSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 14210260023fSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 14220260023fSEdward Tomasz Napierala return (EBUSY); 14230260023fSEdward Tomasz Napierala } 1424009ea47eSEdward Tomasz Napierala 1425009ea47eSEdward Tomasz Napierala strlcpy(is->is_target_alias, handoff->idh_target_alias, 1426009ea47eSEdward Tomasz Napierala sizeof(is->is_target_alias)); 1427ffe82e05SAlexander Motin is->is_tsih = handoff->idh_tsih; 1428009ea47eSEdward Tomasz Napierala is->is_statsn = handoff->idh_statsn; 1429009ea47eSEdward Tomasz Napierala is->is_initial_r2t = handoff->idh_initial_r2t; 1430009ea47eSEdward Tomasz Napierala is->is_immediate_data = handoff->idh_immediate_data; 1431c8b73c2cSNavdeep Parhar 143297b84d34SNavdeep Parhar is->is_max_recv_data_segment_length = 143397b84d34SNavdeep Parhar handoff->idh_max_recv_data_segment_length; 143497b84d34SNavdeep Parhar is->is_max_send_data_segment_length = 143597b84d34SNavdeep Parhar handoff->idh_max_send_data_segment_length; 1436009ea47eSEdward Tomasz Napierala is->is_max_burst_length = handoff->idh_max_burst_length; 1437009ea47eSEdward Tomasz Napierala is->is_first_burst_length = handoff->idh_first_burst_length; 1438009ea47eSEdward Tomasz Napierala 1439009ea47eSEdward Tomasz Napierala if (handoff->idh_header_digest == ISCSI_DIGEST_CRC32C) 1440f5cadbc4SNavdeep Parhar ic->ic_header_crc32c = true; 1441009ea47eSEdward Tomasz Napierala else 1442f5cadbc4SNavdeep Parhar ic->ic_header_crc32c = false; 1443009ea47eSEdward Tomasz Napierala if (handoff->idh_data_digest == ISCSI_DIGEST_CRC32C) 1444f5cadbc4SNavdeep Parhar ic->ic_data_crc32c = true; 1445009ea47eSEdward Tomasz Napierala else 1446f5cadbc4SNavdeep Parhar ic->ic_data_crc32c = false; 1447b218ca6fSEdward Tomasz Napierala ic->ic_maxtags = maxtags; 1448009ea47eSEdward Tomasz Napierala 1449009ea47eSEdward Tomasz Napierala is->is_cmdsn = 0; 1450cf23c509SEdward Tomasz Napierala is->is_expcmdsn = 0; 1451cf23c509SEdward Tomasz Napierala is->is_maxcmdsn = 0; 1452009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = false; 1453009ea47eSEdward Tomasz Napierala is->is_login_phase = false; 1454009ea47eSEdward Tomasz Napierala is->is_timeout = 0; 1455009ea47eSEdward Tomasz Napierala is->is_connected = true; 1456009ea47eSEdward Tomasz Napierala is->is_reason[0] = '\0'; 1457009ea47eSEdward Tomasz Napierala 1458009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1459009ea47eSEdward Tomasz Napierala 146057a4f20bSEdward Tomasz Napierala /* 1461906a424bSEdward Tomasz Napierala * If we're going through the proxy, the idh_socket will be 0, 1462906a424bSEdward Tomasz Napierala * and the ICL module can simply ignore this call. It can also 1463906a424bSEdward Tomasz Napierala * use it to determine it's no longer in the Login phase. 146457a4f20bSEdward Tomasz Napierala */ 1465f5cadbc4SNavdeep Parhar error = icl_conn_handoff(ic, handoff->idh_socket); 1466009ea47eSEdward Tomasz Napierala if (error != 0) { 1467009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1468009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1469009ea47eSEdward Tomasz Napierala return (error); 1470009ea47eSEdward Tomasz Napierala } 1471009ea47eSEdward Tomasz Napierala 1472009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1473009ea47eSEdward Tomasz Napierala 1474009ea47eSEdward Tomasz Napierala if (is->is_sim != NULL) { 1475009ea47eSEdward Tomasz Napierala /* 1476009ea47eSEdward Tomasz Napierala * When reconnecting, there already is SIM allocated for the session. 1477009ea47eSEdward Tomasz Napierala */ 1478009ea47eSEdward Tomasz Napierala KASSERT(is->is_simq_frozen, ("reconnect without frozen simq")); 1479009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1480009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "releasing"); 1481009ea47eSEdward Tomasz Napierala xpt_release_simq(is->is_sim, 1); 1482009ea47eSEdward Tomasz Napierala is->is_simq_frozen = false; 1483009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1484009ea47eSEdward Tomasz Napierala 1485009ea47eSEdward Tomasz Napierala } else { 1486009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1487b218ca6fSEdward Tomasz Napierala is->is_devq = cam_simq_alloc(ic->ic_maxtags); 1488009ea47eSEdward Tomasz Napierala if (is->is_devq == NULL) { 1489009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate simq"); 1490009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1491009ea47eSEdward Tomasz Napierala return (ENOMEM); 1492009ea47eSEdward Tomasz Napierala } 1493009ea47eSEdward Tomasz Napierala 1494009ea47eSEdward Tomasz Napierala is->is_sim = cam_sim_alloc(iscsi_action, iscsi_poll, "iscsi", 1495009ea47eSEdward Tomasz Napierala is, is->is_id /* unit */, &is->is_lock, 1496b218ca6fSEdward Tomasz Napierala 1, ic->ic_maxtags, is->is_devq); 1497009ea47eSEdward Tomasz Napierala if (is->is_sim == NULL) { 1498009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1499009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate SIM"); 1500009ea47eSEdward Tomasz Napierala cam_simq_free(is->is_devq); 1501009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1502009ea47eSEdward Tomasz Napierala return (ENOMEM); 1503009ea47eSEdward Tomasz Napierala } 1504009ea47eSEdward Tomasz Napierala 1505009ea47eSEdward Tomasz Napierala error = xpt_bus_register(is->is_sim, NULL, 0); 1506009ea47eSEdward Tomasz Napierala if (error != 0) { 1507009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1508009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to register bus"); 1509009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1510009ea47eSEdward Tomasz Napierala return (ENOMEM); 1511009ea47eSEdward Tomasz Napierala } 1512009ea47eSEdward Tomasz Napierala 1513009ea47eSEdward Tomasz Napierala error = xpt_create_path(&is->is_path, /*periph*/NULL, 1514009ea47eSEdward Tomasz Napierala cam_sim_path(is->is_sim), CAM_TARGET_WILDCARD, 1515009ea47eSEdward Tomasz Napierala CAM_LUN_WILDCARD); 1516009ea47eSEdward Tomasz Napierala if (error != CAM_REQ_CMP) { 1517009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1518009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to create path"); 1519009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1520009ea47eSEdward Tomasz Napierala return (ENOMEM); 1521009ea47eSEdward Tomasz Napierala } 1522009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1523009ea47eSEdward Tomasz Napierala } 1524009ea47eSEdward Tomasz Napierala 1525009ea47eSEdward Tomasz Napierala return (0); 1526009ea47eSEdward Tomasz Napierala } 1527009ea47eSEdward Tomasz Napierala 1528009ea47eSEdward Tomasz Napierala static int 1529009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_fail(struct iscsi_softc *sc, 1530009ea47eSEdward Tomasz Napierala struct iscsi_daemon_fail *fail) 1531009ea47eSEdward Tomasz Napierala { 1532009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1533009ea47eSEdward Tomasz Napierala 1534009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1535009ea47eSEdward Tomasz Napierala 1536009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1537009ea47eSEdward Tomasz Napierala if (is->is_id == fail->idf_session_id) 1538009ea47eSEdward Tomasz Napierala break; 1539009ea47eSEdward Tomasz Napierala } 1540009ea47eSEdward Tomasz Napierala if (is == NULL) { 1541009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1542009ea47eSEdward Tomasz Napierala return (ESRCH); 1543009ea47eSEdward Tomasz Napierala } 1544009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1545009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "iscsid(8) failed: %s", 1546009ea47eSEdward Tomasz Napierala fail->idf_reason); 1547009ea47eSEdward Tomasz Napierala strlcpy(is->is_reason, fail->idf_reason, sizeof(is->is_reason)); 1548009ea47eSEdward Tomasz Napierala //is->is_waiting_for_iscsid = false; 1549009ea47eSEdward Tomasz Napierala //is->is_login_phase = true; 1550009ea47eSEdward Tomasz Napierala //iscsi_session_reconnect(is); 1551009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1552009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1553009ea47eSEdward Tomasz Napierala 1554009ea47eSEdward Tomasz Napierala return (0); 1555009ea47eSEdward Tomasz Napierala } 1556009ea47eSEdward Tomasz Napierala 1557009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 1558009ea47eSEdward Tomasz Napierala static int 1559009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_connect(struct iscsi_softc *sc, 1560009ea47eSEdward Tomasz Napierala struct iscsi_daemon_connect *idc) 1561009ea47eSEdward Tomasz Napierala { 1562009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1563009ea47eSEdward Tomasz Napierala struct sockaddr *from_sa, *to_sa; 1564009ea47eSEdward Tomasz Napierala int error; 1565009ea47eSEdward Tomasz Napierala 1566009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1567009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1568009ea47eSEdward Tomasz Napierala if (is->is_id == idc->idc_session_id) 1569009ea47eSEdward Tomasz Napierala break; 1570009ea47eSEdward Tomasz Napierala } 1571009ea47eSEdward Tomasz Napierala if (is == NULL) { 1572009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1573009ea47eSEdward Tomasz Napierala return (ESRCH); 1574009ea47eSEdward Tomasz Napierala } 1575009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1576009ea47eSEdward Tomasz Napierala 1577009ea47eSEdward Tomasz Napierala if (idc->idc_from_addrlen > 0) { 1578009ea47eSEdward Tomasz Napierala error = getsockaddr(&from_sa, (void *)idc->idc_from_addr, idc->idc_from_addrlen); 157957a4f20bSEdward Tomasz Napierala if (error != 0) { 158057a4f20bSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, 158157a4f20bSEdward Tomasz Napierala "getsockaddr failed with error %d", error); 1582009ea47eSEdward Tomasz Napierala return (error); 158357a4f20bSEdward Tomasz Napierala } 1584009ea47eSEdward Tomasz Napierala } else { 1585009ea47eSEdward Tomasz Napierala from_sa = NULL; 1586009ea47eSEdward Tomasz Napierala } 1587009ea47eSEdward Tomasz Napierala error = getsockaddr(&to_sa, (void *)idc->idc_to_addr, idc->idc_to_addrlen); 1588009ea47eSEdward Tomasz Napierala if (error != 0) { 158957a4f20bSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "getsockaddr failed with error %d", 159057a4f20bSEdward Tomasz Napierala error); 1591009ea47eSEdward Tomasz Napierala free(from_sa, M_SONAME); 1592009ea47eSEdward Tomasz Napierala return (error); 1593009ea47eSEdward Tomasz Napierala } 1594009ea47eSEdward Tomasz Napierala 1595009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1596a3fd63f2SEdward Tomasz Napierala is->is_statsn = 0; 1597a3fd63f2SEdward Tomasz Napierala is->is_cmdsn = 0; 1598a3fd63f2SEdward Tomasz Napierala is->is_expcmdsn = 0; 1599a3fd63f2SEdward Tomasz Napierala is->is_maxcmdsn = 0; 1600009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = false; 1601009ea47eSEdward Tomasz Napierala is->is_login_phase = true; 1602009ea47eSEdward Tomasz Napierala is->is_timeout = 0; 1603009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1604009ea47eSEdward Tomasz Napierala 1605f41492b0SEdward Tomasz Napierala error = icl_conn_connect(is->is_conn, idc->idc_domain, 1606009ea47eSEdward Tomasz Napierala idc->idc_socktype, idc->idc_protocol, from_sa, to_sa); 1607009ea47eSEdward Tomasz Napierala free(from_sa, M_SONAME); 1608009ea47eSEdward Tomasz Napierala free(to_sa, M_SONAME); 1609009ea47eSEdward Tomasz Napierala 1610009ea47eSEdward Tomasz Napierala /* 1611009ea47eSEdward Tomasz Napierala * Digests are always disabled during login phase. 1612009ea47eSEdward Tomasz Napierala */ 1613009ea47eSEdward Tomasz Napierala is->is_conn->ic_header_crc32c = false; 1614009ea47eSEdward Tomasz Napierala is->is_conn->ic_data_crc32c = false; 1615009ea47eSEdward Tomasz Napierala 1616009ea47eSEdward Tomasz Napierala return (error); 1617009ea47eSEdward Tomasz Napierala } 1618009ea47eSEdward Tomasz Napierala 1619009ea47eSEdward Tomasz Napierala static int 1620009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_send(struct iscsi_softc *sc, 1621009ea47eSEdward Tomasz Napierala struct iscsi_daemon_send *ids) 1622009ea47eSEdward Tomasz Napierala { 1623009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1624009ea47eSEdward Tomasz Napierala struct icl_pdu *ip; 1625009ea47eSEdward Tomasz Napierala size_t datalen; 1626009ea47eSEdward Tomasz Napierala void *data; 1627009ea47eSEdward Tomasz Napierala int error; 1628009ea47eSEdward Tomasz Napierala 1629009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1630009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1631009ea47eSEdward Tomasz Napierala if (is->is_id == ids->ids_session_id) 1632009ea47eSEdward Tomasz Napierala break; 1633009ea47eSEdward Tomasz Napierala } 1634009ea47eSEdward Tomasz Napierala if (is == NULL) { 1635009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1636009ea47eSEdward Tomasz Napierala return (ESRCH); 1637009ea47eSEdward Tomasz Napierala } 1638009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1639009ea47eSEdward Tomasz Napierala 1640009ea47eSEdward Tomasz Napierala if (is->is_login_phase == false) 1641009ea47eSEdward Tomasz Napierala return (EBUSY); 1642009ea47eSEdward Tomasz Napierala 1643009ea47eSEdward Tomasz Napierala if (is->is_terminating || is->is_reconnecting) 1644009ea47eSEdward Tomasz Napierala return (EIO); 1645009ea47eSEdward Tomasz Napierala 1646009ea47eSEdward Tomasz Napierala datalen = ids->ids_data_segment_len; 164797b84d34SNavdeep Parhar if (datalen > is->is_max_send_data_segment_length) 1648009ea47eSEdward Tomasz Napierala return (EINVAL); 1649009ea47eSEdward Tomasz Napierala if (datalen > 0) { 1650009ea47eSEdward Tomasz Napierala data = malloc(datalen, M_ISCSI, M_WAITOK); 1651009ea47eSEdward Tomasz Napierala error = copyin(ids->ids_data_segment, data, datalen); 1652009ea47eSEdward Tomasz Napierala if (error != 0) { 1653009ea47eSEdward Tomasz Napierala free(data, M_ISCSI); 1654009ea47eSEdward Tomasz Napierala return (error); 1655009ea47eSEdward Tomasz Napierala } 1656009ea47eSEdward Tomasz Napierala } 1657009ea47eSEdward Tomasz Napierala 1658d2d52b00SEdward Tomasz Napierala ip = icl_pdu_new(is->is_conn, M_WAITOK); 1659009ea47eSEdward Tomasz Napierala memcpy(ip->ip_bhs, ids->ids_bhs, sizeof(*ip->ip_bhs)); 1660009ea47eSEdward Tomasz Napierala if (datalen > 0) { 1661009ea47eSEdward Tomasz Napierala error = icl_pdu_append_data(ip, data, datalen, M_WAITOK); 1662009ea47eSEdward Tomasz Napierala KASSERT(error == 0, ("icl_pdu_append_data(..., M_WAITOK) failed")); 1663009ea47eSEdward Tomasz Napierala free(data, M_ISCSI); 1664009ea47eSEdward Tomasz Napierala } 1665d66a906bSEdward Tomasz Napierala iscsi_pdu_queue(ip); 1666009ea47eSEdward Tomasz Napierala 1667009ea47eSEdward Tomasz Napierala return (0); 1668009ea47eSEdward Tomasz Napierala } 1669009ea47eSEdward Tomasz Napierala 1670009ea47eSEdward Tomasz Napierala static int 1671009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_receive(struct iscsi_softc *sc, 1672009ea47eSEdward Tomasz Napierala struct iscsi_daemon_receive *idr) 1673009ea47eSEdward Tomasz Napierala { 1674009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1675009ea47eSEdward Tomasz Napierala struct icl_pdu *ip; 1676009ea47eSEdward Tomasz Napierala void *data; 16772f0586b2SEdward Tomasz Napierala int error; 1678009ea47eSEdward Tomasz Napierala 1679009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1680009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1681009ea47eSEdward Tomasz Napierala if (is->is_id == idr->idr_session_id) 1682009ea47eSEdward Tomasz Napierala break; 1683009ea47eSEdward Tomasz Napierala } 1684009ea47eSEdward Tomasz Napierala if (is == NULL) { 1685009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1686009ea47eSEdward Tomasz Napierala return (ESRCH); 1687009ea47eSEdward Tomasz Napierala } 1688009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1689009ea47eSEdward Tomasz Napierala 1690009ea47eSEdward Tomasz Napierala if (is->is_login_phase == false) 1691009ea47eSEdward Tomasz Napierala return (EBUSY); 1692009ea47eSEdward Tomasz Napierala 1693009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1694009ea47eSEdward Tomasz Napierala while (is->is_login_pdu == NULL && 1695009ea47eSEdward Tomasz Napierala is->is_terminating == false && 16962f0586b2SEdward Tomasz Napierala is->is_reconnecting == false) { 16972f0586b2SEdward Tomasz Napierala error = cv_wait_sig(&is->is_login_cv, &is->is_lock); 16982f0586b2SEdward Tomasz Napierala if (error != 0) { 16992f0586b2SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 17002f0586b2SEdward Tomasz Napierala return (error); 17012f0586b2SEdward Tomasz Napierala } 17022f0586b2SEdward Tomasz Napierala } 1703009ea47eSEdward Tomasz Napierala if (is->is_terminating || is->is_reconnecting) { 1704009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1705009ea47eSEdward Tomasz Napierala return (EIO); 1706009ea47eSEdward Tomasz Napierala } 1707009ea47eSEdward Tomasz Napierala ip = is->is_login_pdu; 1708009ea47eSEdward Tomasz Napierala is->is_login_pdu = NULL; 1709009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1710009ea47eSEdward Tomasz Napierala 1711009ea47eSEdward Tomasz Napierala if (ip->ip_data_len > idr->idr_data_segment_len) { 1712009ea47eSEdward Tomasz Napierala icl_pdu_free(ip); 1713009ea47eSEdward Tomasz Napierala return (EMSGSIZE); 1714009ea47eSEdward Tomasz Napierala } 1715009ea47eSEdward Tomasz Napierala 1716009ea47eSEdward Tomasz Napierala copyout(ip->ip_bhs, idr->idr_bhs, sizeof(*ip->ip_bhs)); 1717009ea47eSEdward Tomasz Napierala if (ip->ip_data_len > 0) { 1718009ea47eSEdward Tomasz Napierala data = malloc(ip->ip_data_len, M_ISCSI, M_WAITOK); 1719009ea47eSEdward Tomasz Napierala icl_pdu_get_data(ip, 0, data, ip->ip_data_len); 1720009ea47eSEdward Tomasz Napierala copyout(data, idr->idr_data_segment, ip->ip_data_len); 1721009ea47eSEdward Tomasz Napierala free(data, M_ISCSI); 1722009ea47eSEdward Tomasz Napierala } 1723009ea47eSEdward Tomasz Napierala 1724009ea47eSEdward Tomasz Napierala icl_pdu_free(ip); 1725009ea47eSEdward Tomasz Napierala 1726009ea47eSEdward Tomasz Napierala return (0); 1727009ea47eSEdward Tomasz Napierala } 1728009ea47eSEdward Tomasz Napierala #endif /* ICL_KERNEL_PROXY */ 1729009ea47eSEdward Tomasz Napierala 1730009ea47eSEdward Tomasz Napierala static void 1731009ea47eSEdward Tomasz Napierala iscsi_sanitize_session_conf(struct iscsi_session_conf *isc) 1732009ea47eSEdward Tomasz Napierala { 1733009ea47eSEdward Tomasz Napierala /* 1734009ea47eSEdward Tomasz Napierala * Just make sure all the fields are null-terminated. 1735009ea47eSEdward Tomasz Napierala * 1736009ea47eSEdward Tomasz Napierala * XXX: This is not particularly secure. We should 1737009ea47eSEdward Tomasz Napierala * create our own conf and then copy in relevant 1738009ea47eSEdward Tomasz Napierala * fields. 1739009ea47eSEdward Tomasz Napierala */ 1740009ea47eSEdward Tomasz Napierala isc->isc_initiator[ISCSI_NAME_LEN - 1] = '\0'; 1741009ea47eSEdward Tomasz Napierala isc->isc_initiator_addr[ISCSI_ADDR_LEN - 1] = '\0'; 1742009ea47eSEdward Tomasz Napierala isc->isc_initiator_alias[ISCSI_ALIAS_LEN - 1] = '\0'; 1743009ea47eSEdward Tomasz Napierala isc->isc_target[ISCSI_NAME_LEN - 1] = '\0'; 1744009ea47eSEdward Tomasz Napierala isc->isc_target_addr[ISCSI_ADDR_LEN - 1] = '\0'; 1745009ea47eSEdward Tomasz Napierala isc->isc_user[ISCSI_NAME_LEN - 1] = '\0'; 1746009ea47eSEdward Tomasz Napierala isc->isc_secret[ISCSI_SECRET_LEN - 1] = '\0'; 1747009ea47eSEdward Tomasz Napierala isc->isc_mutual_user[ISCSI_NAME_LEN - 1] = '\0'; 1748009ea47eSEdward Tomasz Napierala isc->isc_mutual_secret[ISCSI_SECRET_LEN - 1] = '\0'; 1749009ea47eSEdward Tomasz Napierala } 1750009ea47eSEdward Tomasz Napierala 175151be90b5SEdward Tomasz Napierala static bool 175251be90b5SEdward Tomasz Napierala iscsi_valid_session_conf(const struct iscsi_session_conf *isc) 175351be90b5SEdward Tomasz Napierala { 175451be90b5SEdward Tomasz Napierala 175551be90b5SEdward Tomasz Napierala if (isc->isc_initiator[0] == '\0') { 175651be90b5SEdward Tomasz Napierala ISCSI_DEBUG("empty isc_initiator"); 175751be90b5SEdward Tomasz Napierala return (false); 175851be90b5SEdward Tomasz Napierala } 175951be90b5SEdward Tomasz Napierala 176051be90b5SEdward Tomasz Napierala if (isc->isc_target_addr[0] == '\0') { 176151be90b5SEdward Tomasz Napierala ISCSI_DEBUG("empty isc_target_addr"); 176251be90b5SEdward Tomasz Napierala return (false); 176351be90b5SEdward Tomasz Napierala } 176451be90b5SEdward Tomasz Napierala 176551be90b5SEdward Tomasz Napierala if (isc->isc_discovery != 0 && isc->isc_target[0] != 0) { 176651be90b5SEdward Tomasz Napierala ISCSI_DEBUG("non-empty isc_target for discovery session"); 176751be90b5SEdward Tomasz Napierala return (false); 176851be90b5SEdward Tomasz Napierala } 176951be90b5SEdward Tomasz Napierala 177051be90b5SEdward Tomasz Napierala if (isc->isc_discovery == 0 && isc->isc_target[0] == 0) { 177151be90b5SEdward Tomasz Napierala ISCSI_DEBUG("empty isc_target for non-discovery session"); 177251be90b5SEdward Tomasz Napierala return (false); 177351be90b5SEdward Tomasz Napierala } 177451be90b5SEdward Tomasz Napierala 177551be90b5SEdward Tomasz Napierala return (true); 177651be90b5SEdward Tomasz Napierala } 177751be90b5SEdward Tomasz Napierala 1778009ea47eSEdward Tomasz Napierala static int 1779009ea47eSEdward Tomasz Napierala iscsi_ioctl_session_add(struct iscsi_softc *sc, struct iscsi_session_add *isa) 1780009ea47eSEdward Tomasz Napierala { 1781009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1782009ea47eSEdward Tomasz Napierala const struct iscsi_session *is2; 1783009ea47eSEdward Tomasz Napierala int error; 1784009ea47eSEdward Tomasz Napierala 1785009ea47eSEdward Tomasz Napierala iscsi_sanitize_session_conf(&isa->isa_conf); 178651be90b5SEdward Tomasz Napierala if (iscsi_valid_session_conf(&isa->isa_conf) == false) 178751be90b5SEdward Tomasz Napierala return (EINVAL); 1788009ea47eSEdward Tomasz Napierala 1789009ea47eSEdward Tomasz Napierala is = malloc(sizeof(*is), M_ISCSI, M_ZERO | M_WAITOK); 1790009ea47eSEdward Tomasz Napierala memcpy(&is->is_conf, &isa->isa_conf, sizeof(is->is_conf)); 1791009ea47eSEdward Tomasz Napierala 17929ac7c5a6SHans Petter Selasky /* 17939ac7c5a6SHans Petter Selasky * Set some default values, from RFC 3720, section 12. 17949ac7c5a6SHans Petter Selasky * 17959ac7c5a6SHans Petter Selasky * These values are updated by the handoff IOCTL, but are 17969ac7c5a6SHans Petter Selasky * needed prior to the handoff to support sending the ISER 17979ac7c5a6SHans Petter Selasky * login PDU. 17989ac7c5a6SHans Petter Selasky */ 17999ac7c5a6SHans Petter Selasky is->is_max_recv_data_segment_length = 8192; 18009ac7c5a6SHans Petter Selasky is->is_max_send_data_segment_length = 8192; 18019ac7c5a6SHans Petter Selasky is->is_max_burst_length = 262144; 18029ac7c5a6SHans Petter Selasky is->is_first_burst_length = 65536; 18039ac7c5a6SHans Petter Selasky 1804009ea47eSEdward Tomasz Napierala sx_xlock(&sc->sc_lock); 1805009ea47eSEdward Tomasz Napierala 1806009ea47eSEdward Tomasz Napierala /* 1807009ea47eSEdward Tomasz Napierala * Prevent duplicates. 1808009ea47eSEdward Tomasz Napierala */ 1809009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is2, &sc->sc_sessions, is_next) { 18107843bd03SEdward Tomasz Napierala if (!!is->is_conf.isc_discovery != 18117843bd03SEdward Tomasz Napierala !!is2->is_conf.isc_discovery) 18127843bd03SEdward Tomasz Napierala continue; 18137843bd03SEdward Tomasz Napierala 18147843bd03SEdward Tomasz Napierala if (strcmp(is->is_conf.isc_target_addr, 18157843bd03SEdward Tomasz Napierala is2->is_conf.isc_target_addr) != 0) 18167843bd03SEdward Tomasz Napierala continue; 18177843bd03SEdward Tomasz Napierala 18187843bd03SEdward Tomasz Napierala if (is->is_conf.isc_discovery == 0 && 18197843bd03SEdward Tomasz Napierala strcmp(is->is_conf.isc_target, 18207843bd03SEdward Tomasz Napierala is2->is_conf.isc_target) != 0) 18217843bd03SEdward Tomasz Napierala continue; 18227843bd03SEdward Tomasz Napierala 1823009ea47eSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 18247843bd03SEdward Tomasz Napierala free(is, M_ISCSI); 1825009ea47eSEdward Tomasz Napierala return (EBUSY); 1826009ea47eSEdward Tomasz Napierala } 1827009ea47eSEdward Tomasz Napierala 182882babffbSEdward Tomasz Napierala is->is_conn = icl_new_conn(is->is_conf.isc_offload, 1829b8911594SEdward Tomasz Napierala is->is_conf.isc_iser, "iscsi", &is->is_lock); 183082babffbSEdward Tomasz Napierala if (is->is_conn == NULL) { 183182babffbSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 183282babffbSEdward Tomasz Napierala free(is, M_ISCSI); 183382babffbSEdward Tomasz Napierala return (EINVAL); 183482babffbSEdward Tomasz Napierala } 1835009ea47eSEdward Tomasz Napierala is->is_conn->ic_receive = iscsi_receive_callback; 1836009ea47eSEdward Tomasz Napierala is->is_conn->ic_error = iscsi_error_callback; 1837009ea47eSEdward Tomasz Napierala is->is_conn->ic_prv0 = is; 1838009ea47eSEdward Tomasz Napierala TAILQ_INIT(&is->is_outstanding); 183916c158a5SEdward Tomasz Napierala STAILQ_INIT(&is->is_postponed); 1840009ea47eSEdward Tomasz Napierala mtx_init(&is->is_lock, "iscsi_lock", NULL, MTX_DEF); 1841009ea47eSEdward Tomasz Napierala cv_init(&is->is_maintenance_cv, "iscsi_mt"); 1842009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 1843009ea47eSEdward Tomasz Napierala cv_init(&is->is_login_cv, "iscsi_login"); 1844009ea47eSEdward Tomasz Napierala #endif 1845009ea47eSEdward Tomasz Napierala 1846009ea47eSEdward Tomasz Napierala is->is_softc = sc; 1847009ea47eSEdward Tomasz Napierala sc->sc_last_session_id++; 1848009ea47eSEdward Tomasz Napierala is->is_id = sc->sc_last_session_id; 1849ffe82e05SAlexander Motin is->is_isid[0] = 0x80; /* RFC 3720, 10.12.5: 10b, "Random" ISID. */ 1850ffe82e05SAlexander Motin arc4rand(&is->is_isid[1], 5, 0); 1851ffe82e05SAlexander Motin is->is_tsih = 0; 1852009ea47eSEdward Tomasz Napierala callout_init(&is->is_callout, 1); 1853009ea47eSEdward Tomasz Napierala 1854009ea47eSEdward Tomasz Napierala error = kthread_add(iscsi_maintenance_thread, is, NULL, NULL, 0, 0, "iscsimt"); 1855009ea47eSEdward Tomasz Napierala if (error != 0) { 1856009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "kthread_add(9) failed with error %d", error); 185709f2b94bSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 1858009ea47eSEdward Tomasz Napierala return (error); 1859009ea47eSEdward Tomasz Napierala } 1860009ea47eSEdward Tomasz Napierala 186109f2b94bSEdward Tomasz Napierala callout_reset(&is->is_callout, 1 * hz, iscsi_callout, is); 186209f2b94bSEdward Tomasz Napierala TAILQ_INSERT_TAIL(&sc->sc_sessions, is, is_next); 186309f2b94bSEdward Tomasz Napierala 18642be596adSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1865ba165a31SEdward Tomasz Napierala /* 1866ba165a31SEdward Tomasz Napierala * Don't notify iscsid(8) if the session is disabled and it's not 1867ba165a31SEdward Tomasz Napierala * a discovery session, 1868ba165a31SEdward Tomasz Napierala */ 1869ba165a31SEdward Tomasz Napierala if (is->is_conf.isc_enable == 0 && is->is_conf.isc_discovery == 0) { 1870ba165a31SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1871ba165a31SEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 1872ba165a31SEdward Tomasz Napierala return (0); 1873ba165a31SEdward Tomasz Napierala } 1874ba165a31SEdward Tomasz Napierala 1875009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = true; 1876009ea47eSEdward Tomasz Napierala strlcpy(is->is_reason, "Waiting for iscsid(8)", sizeof(is->is_reason)); 18772be596adSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1878009ea47eSEdward Tomasz Napierala cv_signal(&sc->sc_cv); 1879009ea47eSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 1880009ea47eSEdward Tomasz Napierala return (0); 1881009ea47eSEdward Tomasz Napierala } 1882009ea47eSEdward Tomasz Napierala 1883009ea47eSEdward Tomasz Napierala static bool 1884009ea47eSEdward Tomasz Napierala iscsi_session_conf_matches(unsigned int id1, const struct iscsi_session_conf *c1, 1885009ea47eSEdward Tomasz Napierala unsigned int id2, const struct iscsi_session_conf *c2) 1886009ea47eSEdward Tomasz Napierala { 18876cc1e267SEdward Tomasz Napierala 18886cc1e267SEdward Tomasz Napierala if (id2 != 0 && id2 != id1) 1889009ea47eSEdward Tomasz Napierala return (false); 18906cc1e267SEdward Tomasz Napierala if (c2->isc_target[0] != '\0' && 18916cc1e267SEdward Tomasz Napierala strcmp(c1->isc_target, c2->isc_target) != 0) 18926cc1e267SEdward Tomasz Napierala return (false); 18936cc1e267SEdward Tomasz Napierala if (c2->isc_target_addr[0] != '\0' && 18946cc1e267SEdward Tomasz Napierala strcmp(c1->isc_target_addr, c2->isc_target_addr) != 0) 18956cc1e267SEdward Tomasz Napierala return (false); 18966cc1e267SEdward Tomasz Napierala return (true); 1897009ea47eSEdward Tomasz Napierala } 1898009ea47eSEdward Tomasz Napierala 1899009ea47eSEdward Tomasz Napierala static int 1900009ea47eSEdward Tomasz Napierala iscsi_ioctl_session_remove(struct iscsi_softc *sc, 1901009ea47eSEdward Tomasz Napierala struct iscsi_session_remove *isr) 1902009ea47eSEdward Tomasz Napierala { 1903009ea47eSEdward Tomasz Napierala struct iscsi_session *is, *tmp; 1904009ea47eSEdward Tomasz Napierala bool found = false; 1905009ea47eSEdward Tomasz Napierala 1906009ea47eSEdward Tomasz Napierala iscsi_sanitize_session_conf(&isr->isr_conf); 1907009ea47eSEdward Tomasz Napierala 1908009ea47eSEdward Tomasz Napierala sx_xlock(&sc->sc_lock); 1909009ea47eSEdward Tomasz Napierala TAILQ_FOREACH_SAFE(is, &sc->sc_sessions, is_next, tmp) { 1910009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1911009ea47eSEdward Tomasz Napierala if (iscsi_session_conf_matches(is->is_id, &is->is_conf, 1912009ea47eSEdward Tomasz Napierala isr->isr_session_id, &isr->isr_conf)) { 1913009ea47eSEdward Tomasz Napierala found = true; 1914009ea47eSEdward Tomasz Napierala iscsi_session_logout(is); 1915009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1916009ea47eSEdward Tomasz Napierala } 1917009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1918009ea47eSEdward Tomasz Napierala } 1919009ea47eSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 1920009ea47eSEdward Tomasz Napierala 1921009ea47eSEdward Tomasz Napierala if (!found) 1922009ea47eSEdward Tomasz Napierala return (ESRCH); 1923009ea47eSEdward Tomasz Napierala 1924009ea47eSEdward Tomasz Napierala return (0); 1925009ea47eSEdward Tomasz Napierala } 1926009ea47eSEdward Tomasz Napierala 1927009ea47eSEdward Tomasz Napierala static int 1928009ea47eSEdward Tomasz Napierala iscsi_ioctl_session_list(struct iscsi_softc *sc, struct iscsi_session_list *isl) 1929009ea47eSEdward Tomasz Napierala { 1930009ea47eSEdward Tomasz Napierala int error; 1931009ea47eSEdward Tomasz Napierala unsigned int i = 0; 1932009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1933009ea47eSEdward Tomasz Napierala struct iscsi_session_state iss; 1934009ea47eSEdward Tomasz Napierala 1935009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1936009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1937009ea47eSEdward Tomasz Napierala if (i >= isl->isl_nentries) { 1938009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1939009ea47eSEdward Tomasz Napierala return (EMSGSIZE); 1940009ea47eSEdward Tomasz Napierala } 1941009ea47eSEdward Tomasz Napierala memset(&iss, 0, sizeof(iss)); 1942009ea47eSEdward Tomasz Napierala memcpy(&iss.iss_conf, &is->is_conf, sizeof(iss.iss_conf)); 1943009ea47eSEdward Tomasz Napierala iss.iss_id = is->is_id; 1944009ea47eSEdward Tomasz Napierala strlcpy(iss.iss_target_alias, is->is_target_alias, sizeof(iss.iss_target_alias)); 1945009ea47eSEdward Tomasz Napierala strlcpy(iss.iss_reason, is->is_reason, sizeof(iss.iss_reason)); 194682babffbSEdward Tomasz Napierala strlcpy(iss.iss_offload, is->is_conn->ic_offload, sizeof(iss.iss_offload)); 1947009ea47eSEdward Tomasz Napierala 1948009ea47eSEdward Tomasz Napierala if (is->is_conn->ic_header_crc32c) 1949009ea47eSEdward Tomasz Napierala iss.iss_header_digest = ISCSI_DIGEST_CRC32C; 1950009ea47eSEdward Tomasz Napierala else 1951009ea47eSEdward Tomasz Napierala iss.iss_header_digest = ISCSI_DIGEST_NONE; 1952009ea47eSEdward Tomasz Napierala 1953009ea47eSEdward Tomasz Napierala if (is->is_conn->ic_data_crc32c) 1954009ea47eSEdward Tomasz Napierala iss.iss_data_digest = ISCSI_DIGEST_CRC32C; 1955009ea47eSEdward Tomasz Napierala else 1956009ea47eSEdward Tomasz Napierala iss.iss_data_digest = ISCSI_DIGEST_NONE; 1957009ea47eSEdward Tomasz Napierala 195897b84d34SNavdeep Parhar iss.iss_max_send_data_segment_length = 195997b84d34SNavdeep Parhar is->is_max_send_data_segment_length; 196097b84d34SNavdeep Parhar iss.iss_max_recv_data_segment_length = 196197b84d34SNavdeep Parhar is->is_max_recv_data_segment_length; 19624e5408f1SEdward Tomasz Napierala iss.iss_max_burst_length = is->is_max_burst_length; 19634e5408f1SEdward Tomasz Napierala iss.iss_first_burst_length = is->is_first_burst_length; 1964009ea47eSEdward Tomasz Napierala iss.iss_immediate_data = is->is_immediate_data; 1965009ea47eSEdward Tomasz Napierala iss.iss_connected = is->is_connected; 1966009ea47eSEdward Tomasz Napierala 1967009ea47eSEdward Tomasz Napierala error = copyout(&iss, isl->isl_pstates + i, sizeof(iss)); 1968009ea47eSEdward Tomasz Napierala if (error != 0) { 1969009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1970009ea47eSEdward Tomasz Napierala return (error); 1971009ea47eSEdward Tomasz Napierala } 1972009ea47eSEdward Tomasz Napierala i++; 1973009ea47eSEdward Tomasz Napierala } 1974009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1975009ea47eSEdward Tomasz Napierala 1976009ea47eSEdward Tomasz Napierala isl->isl_nentries = i; 1977009ea47eSEdward Tomasz Napierala 1978009ea47eSEdward Tomasz Napierala return (0); 1979009ea47eSEdward Tomasz Napierala } 1980009ea47eSEdward Tomasz Napierala 1981009ea47eSEdward Tomasz Napierala static int 198251be90b5SEdward Tomasz Napierala iscsi_ioctl_session_modify(struct iscsi_softc *sc, 198351be90b5SEdward Tomasz Napierala struct iscsi_session_modify *ism) 198451be90b5SEdward Tomasz Napierala { 198551be90b5SEdward Tomasz Napierala struct iscsi_session *is; 1986*8ff2372aSEdward Tomasz Napierala const struct iscsi_session *is2; 198751be90b5SEdward Tomasz Napierala 198851be90b5SEdward Tomasz Napierala iscsi_sanitize_session_conf(&ism->ism_conf); 198951be90b5SEdward Tomasz Napierala if (iscsi_valid_session_conf(&ism->ism_conf) == false) 199051be90b5SEdward Tomasz Napierala return (EINVAL); 199151be90b5SEdward Tomasz Napierala 199251be90b5SEdward Tomasz Napierala sx_xlock(&sc->sc_lock); 199351be90b5SEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 199451be90b5SEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1995*8ff2372aSEdward Tomasz Napierala if (is->is_id == ism->ism_session_id) { 1996*8ff2372aSEdward Tomasz Napierala /* Note that the session remains locked. */ 199751be90b5SEdward Tomasz Napierala break; 1998*8ff2372aSEdward Tomasz Napierala } 199951be90b5SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 200051be90b5SEdward Tomasz Napierala } 200151be90b5SEdward Tomasz Napierala if (is == NULL) { 200251be90b5SEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 200351be90b5SEdward Tomasz Napierala return (ESRCH); 200451be90b5SEdward Tomasz Napierala } 2005*8ff2372aSEdward Tomasz Napierala 2006*8ff2372aSEdward Tomasz Napierala /* 2007*8ff2372aSEdward Tomasz Napierala * Prevent duplicates. 2008*8ff2372aSEdward Tomasz Napierala */ 2009*8ff2372aSEdward Tomasz Napierala TAILQ_FOREACH(is2, &sc->sc_sessions, is_next) { 2010*8ff2372aSEdward Tomasz Napierala if (is == is2) 2011*8ff2372aSEdward Tomasz Napierala continue; 2012*8ff2372aSEdward Tomasz Napierala 2013*8ff2372aSEdward Tomasz Napierala if (!!ism->ism_conf.isc_discovery != 2014*8ff2372aSEdward Tomasz Napierala !!is2->is_conf.isc_discovery) 2015*8ff2372aSEdward Tomasz Napierala continue; 2016*8ff2372aSEdward Tomasz Napierala 2017*8ff2372aSEdward Tomasz Napierala if (strcmp(ism->ism_conf.isc_target_addr, 2018*8ff2372aSEdward Tomasz Napierala is2->is_conf.isc_target_addr) != 0) 2019*8ff2372aSEdward Tomasz Napierala continue; 2020*8ff2372aSEdward Tomasz Napierala 2021*8ff2372aSEdward Tomasz Napierala if (ism->ism_conf.isc_discovery == 0 && 2022*8ff2372aSEdward Tomasz Napierala strcmp(ism->ism_conf.isc_target, 2023*8ff2372aSEdward Tomasz Napierala is2->is_conf.isc_target) != 0) 2024*8ff2372aSEdward Tomasz Napierala continue; 2025*8ff2372aSEdward Tomasz Napierala 2026*8ff2372aSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 2027*8ff2372aSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 2028*8ff2372aSEdward Tomasz Napierala return (EBUSY); 2029*8ff2372aSEdward Tomasz Napierala } 2030*8ff2372aSEdward Tomasz Napierala 203151be90b5SEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 203251be90b5SEdward Tomasz Napierala 203351be90b5SEdward Tomasz Napierala memcpy(&is->is_conf, &ism->ism_conf, sizeof(is->is_conf)); 203451be90b5SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 203551be90b5SEdward Tomasz Napierala 203651be90b5SEdward Tomasz Napierala iscsi_session_reconnect(is); 203751be90b5SEdward Tomasz Napierala 203851be90b5SEdward Tomasz Napierala return (0); 203951be90b5SEdward Tomasz Napierala } 204051be90b5SEdward Tomasz Napierala 204151be90b5SEdward Tomasz Napierala static int 2042009ea47eSEdward Tomasz Napierala iscsi_ioctl(struct cdev *dev, u_long cmd, caddr_t arg, int mode, 2043009ea47eSEdward Tomasz Napierala struct thread *td) 2044009ea47eSEdward Tomasz Napierala { 2045009ea47eSEdward Tomasz Napierala struct iscsi_softc *sc; 2046009ea47eSEdward Tomasz Napierala 2047009ea47eSEdward Tomasz Napierala sc = dev->si_drv1; 2048009ea47eSEdward Tomasz Napierala 2049009ea47eSEdward Tomasz Napierala switch (cmd) { 2050009ea47eSEdward Tomasz Napierala case ISCSIDWAIT: 2051009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_wait(sc, 2052009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_request *)arg)); 2053009ea47eSEdward Tomasz Napierala case ISCSIDHANDOFF: 2054009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_handoff(sc, 2055009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_handoff *)arg)); 2056009ea47eSEdward Tomasz Napierala case ISCSIDFAIL: 2057009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_fail(sc, 2058009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_fail *)arg)); 2059009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 2060009ea47eSEdward Tomasz Napierala case ISCSIDCONNECT: 2061009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_connect(sc, 2062009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_connect *)arg)); 2063009ea47eSEdward Tomasz Napierala case ISCSIDSEND: 2064009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_send(sc, 2065009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_send *)arg)); 2066009ea47eSEdward Tomasz Napierala case ISCSIDRECEIVE: 2067009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_receive(sc, 2068009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_receive *)arg)); 2069009ea47eSEdward Tomasz Napierala #endif /* ICL_KERNEL_PROXY */ 2070009ea47eSEdward Tomasz Napierala case ISCSISADD: 2071009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_session_add(sc, 2072009ea47eSEdward Tomasz Napierala (struct iscsi_session_add *)arg)); 2073009ea47eSEdward Tomasz Napierala case ISCSISREMOVE: 2074009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_session_remove(sc, 2075009ea47eSEdward Tomasz Napierala (struct iscsi_session_remove *)arg)); 2076009ea47eSEdward Tomasz Napierala case ISCSISLIST: 2077009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_session_list(sc, 2078009ea47eSEdward Tomasz Napierala (struct iscsi_session_list *)arg)); 207951be90b5SEdward Tomasz Napierala case ISCSISMODIFY: 208051be90b5SEdward Tomasz Napierala return (iscsi_ioctl_session_modify(sc, 208151be90b5SEdward Tomasz Napierala (struct iscsi_session_modify *)arg)); 2082009ea47eSEdward Tomasz Napierala default: 2083009ea47eSEdward Tomasz Napierala return (EINVAL); 2084009ea47eSEdward Tomasz Napierala } 2085009ea47eSEdward Tomasz Napierala } 2086009ea47eSEdward Tomasz Napierala 2087009ea47eSEdward Tomasz Napierala static struct iscsi_outstanding * 2088009ea47eSEdward Tomasz Napierala iscsi_outstanding_find(struct iscsi_session *is, uint32_t initiator_task_tag) 2089009ea47eSEdward Tomasz Napierala { 2090009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io; 2091009ea47eSEdward Tomasz Napierala 2092009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 2093009ea47eSEdward Tomasz Napierala 2094009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(io, &is->is_outstanding, io_next) { 2095009ea47eSEdward Tomasz Napierala if (io->io_initiator_task_tag == initiator_task_tag) 2096009ea47eSEdward Tomasz Napierala return (io); 2097009ea47eSEdward Tomasz Napierala } 2098009ea47eSEdward Tomasz Napierala return (NULL); 2099009ea47eSEdward Tomasz Napierala } 2100009ea47eSEdward Tomasz Napierala 2101aa75114cSAlexander Motin static struct iscsi_outstanding * 2102aa75114cSAlexander Motin iscsi_outstanding_find_ccb(struct iscsi_session *is, union ccb *ccb) 2103aa75114cSAlexander Motin { 2104aa75114cSAlexander Motin struct iscsi_outstanding *io; 2105aa75114cSAlexander Motin 2106aa75114cSAlexander Motin ISCSI_SESSION_LOCK_ASSERT(is); 2107aa75114cSAlexander Motin 2108aa75114cSAlexander Motin TAILQ_FOREACH(io, &is->is_outstanding, io_next) { 2109aa75114cSAlexander Motin if (io->io_ccb == ccb) 2110aa75114cSAlexander Motin return (io); 2111aa75114cSAlexander Motin } 2112aa75114cSAlexander Motin return (NULL); 2113aa75114cSAlexander Motin } 2114aa75114cSAlexander Motin 2115aa75114cSAlexander Motin static struct iscsi_outstanding * 2116604c023fSEdward Tomasz Napierala iscsi_outstanding_add(struct iscsi_session *is, struct icl_pdu *request, 21177a03d007SEdward Tomasz Napierala union ccb *ccb, uint32_t *initiator_task_tagp) 2118009ea47eSEdward Tomasz Napierala { 2119009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io; 21207a03d007SEdward Tomasz Napierala int error; 2121009ea47eSEdward Tomasz Napierala 2122009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 2123009ea47eSEdward Tomasz Napierala 2124009ea47eSEdward Tomasz Napierala io = uma_zalloc(iscsi_outstanding_zone, M_NOWAIT | M_ZERO); 2125009ea47eSEdward Tomasz Napierala if (io == NULL) { 21267a03d007SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate %zd bytes", 21277a03d007SEdward Tomasz Napierala sizeof(*io)); 2128aa75114cSAlexander Motin return (NULL); 2129009ea47eSEdward Tomasz Napierala } 21307a03d007SEdward Tomasz Napierala 2131604c023fSEdward Tomasz Napierala error = icl_conn_task_setup(is->is_conn, request, &ccb->csio, 21327a03d007SEdward Tomasz Napierala initiator_task_tagp, &io->io_icl_prv); 21337a03d007SEdward Tomasz Napierala if (error != 0) { 21347a03d007SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, 21357a03d007SEdward Tomasz Napierala "icl_conn_task_setup() failed with error %d", error); 21367a03d007SEdward Tomasz Napierala uma_zfree(iscsi_outstanding_zone, io); 21377a03d007SEdward Tomasz Napierala return (NULL); 21387a03d007SEdward Tomasz Napierala } 21397a03d007SEdward Tomasz Napierala 21407a03d007SEdward Tomasz Napierala KASSERT(iscsi_outstanding_find(is, *initiator_task_tagp) == NULL, 21417a03d007SEdward Tomasz Napierala ("initiator_task_tag 0x%x already added", *initiator_task_tagp)); 21427a03d007SEdward Tomasz Napierala 21437a03d007SEdward Tomasz Napierala io->io_initiator_task_tag = *initiator_task_tagp; 2144009ea47eSEdward Tomasz Napierala io->io_ccb = ccb; 2145009ea47eSEdward Tomasz Napierala TAILQ_INSERT_TAIL(&is->is_outstanding, io, io_next); 2146aa75114cSAlexander Motin return (io); 2147009ea47eSEdward Tomasz Napierala } 2148009ea47eSEdward Tomasz Napierala 2149009ea47eSEdward Tomasz Napierala static void 2150009ea47eSEdward Tomasz Napierala iscsi_outstanding_remove(struct iscsi_session *is, struct iscsi_outstanding *io) 2151009ea47eSEdward Tomasz Napierala { 2152009ea47eSEdward Tomasz Napierala 2153009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 2154009ea47eSEdward Tomasz Napierala 21557a03d007SEdward Tomasz Napierala icl_conn_task_done(is->is_conn, io->io_icl_prv); 2156009ea47eSEdward Tomasz Napierala TAILQ_REMOVE(&is->is_outstanding, io, io_next); 2157009ea47eSEdward Tomasz Napierala uma_zfree(iscsi_outstanding_zone, io); 2158009ea47eSEdward Tomasz Napierala } 2159009ea47eSEdward Tomasz Napierala 2160009ea47eSEdward Tomasz Napierala static void 2161aa75114cSAlexander Motin iscsi_action_abort(struct iscsi_session *is, union ccb *ccb) 2162aa75114cSAlexander Motin { 2163aa75114cSAlexander Motin struct icl_pdu *request; 2164aa75114cSAlexander Motin struct iscsi_bhs_task_management_request *bhstmr; 2165aa75114cSAlexander Motin struct ccb_abort *cab = &ccb->cab; 2166aa75114cSAlexander Motin struct iscsi_outstanding *io, *aio; 21677a03d007SEdward Tomasz Napierala uint32_t initiator_task_tag; 2168aa75114cSAlexander Motin 2169aa75114cSAlexander Motin ISCSI_SESSION_LOCK_ASSERT(is); 2170aa75114cSAlexander Motin 2171aa75114cSAlexander Motin #if 0 2172aa75114cSAlexander Motin KASSERT(is->is_login_phase == false, ("%s called during Login Phase", __func__)); 2173aa75114cSAlexander Motin #else 2174aa75114cSAlexander Motin if (is->is_login_phase) { 2175aa75114cSAlexander Motin ccb->ccb_h.status = CAM_REQ_ABORTED; 2176aa75114cSAlexander Motin xpt_done(ccb); 2177aa75114cSAlexander Motin return; 2178aa75114cSAlexander Motin } 2179aa75114cSAlexander Motin #endif 2180aa75114cSAlexander Motin 2181aa75114cSAlexander Motin aio = iscsi_outstanding_find_ccb(is, cab->abort_ccb); 2182aa75114cSAlexander Motin if (aio == NULL) { 2183aa75114cSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP; 2184aa75114cSAlexander Motin xpt_done(ccb); 2185aa75114cSAlexander Motin return; 2186aa75114cSAlexander Motin } 2187aa75114cSAlexander Motin 2188d2d52b00SEdward Tomasz Napierala request = icl_pdu_new(is->is_conn, M_NOWAIT); 2189aa75114cSAlexander Motin if (request == NULL) { 2190aa75114cSAlexander Motin ccb->ccb_h.status = CAM_RESRC_UNAVAIL; 2191aa75114cSAlexander Motin xpt_done(ccb); 2192aa75114cSAlexander Motin return; 2193aa75114cSAlexander Motin } 2194aa75114cSAlexander Motin 21957a03d007SEdward Tomasz Napierala initiator_task_tag = is->is_initiator_task_tag++; 2196aa75114cSAlexander Motin 2197604c023fSEdward Tomasz Napierala io = iscsi_outstanding_add(is, request, NULL, &initiator_task_tag); 2198aa75114cSAlexander Motin if (io == NULL) { 2199aa75114cSAlexander Motin icl_pdu_free(request); 2200aa75114cSAlexander Motin ccb->ccb_h.status = CAM_RESRC_UNAVAIL; 2201aa75114cSAlexander Motin xpt_done(ccb); 2202aa75114cSAlexander Motin return; 2203aa75114cSAlexander Motin } 2204aa75114cSAlexander Motin io->io_datasn = aio->io_initiator_task_tag; 22057a03d007SEdward Tomasz Napierala 22067a03d007SEdward Tomasz Napierala bhstmr = (struct iscsi_bhs_task_management_request *)request->ip_bhs; 22077a03d007SEdward Tomasz Napierala bhstmr->bhstmr_opcode = ISCSI_BHS_OPCODE_TASK_REQUEST; 22087a03d007SEdward Tomasz Napierala bhstmr->bhstmr_function = 0x80 | BHSTMR_FUNCTION_ABORT_TASK; 22097a03d007SEdward Tomasz Napierala bhstmr->bhstmr_lun = htobe64(CAM_EXTLUN_BYTE_SWIZZLE(ccb->ccb_h.target_lun)); 22107a03d007SEdward Tomasz Napierala bhstmr->bhstmr_initiator_task_tag = initiator_task_tag; 22117a03d007SEdward Tomasz Napierala bhstmr->bhstmr_referenced_task_tag = aio->io_initiator_task_tag; 22127a03d007SEdward Tomasz Napierala 2213aa75114cSAlexander Motin iscsi_pdu_queue_locked(request); 2214aa75114cSAlexander Motin } 2215aa75114cSAlexander Motin 2216aa75114cSAlexander Motin static void 2217009ea47eSEdward Tomasz Napierala iscsi_action_scsiio(struct iscsi_session *is, union ccb *ccb) 2218009ea47eSEdward Tomasz Napierala { 2219009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 2220009ea47eSEdward Tomasz Napierala struct iscsi_bhs_scsi_command *bhssc; 2221009ea47eSEdward Tomasz Napierala struct ccb_scsiio *csio; 2222aa75114cSAlexander Motin struct iscsi_outstanding *io; 2223009ea47eSEdward Tomasz Napierala size_t len; 22247a03d007SEdward Tomasz Napierala uint32_t initiator_task_tag; 2225009ea47eSEdward Tomasz Napierala int error; 2226009ea47eSEdward Tomasz Napierala 2227009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 2228009ea47eSEdward Tomasz Napierala 2229009ea47eSEdward Tomasz Napierala #if 0 2230009ea47eSEdward Tomasz Napierala KASSERT(is->is_login_phase == false, ("%s called during Login Phase", __func__)); 2231009ea47eSEdward Tomasz Napierala #else 2232009ea47eSEdward Tomasz Napierala if (is->is_login_phase) { 2233009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "called during login phase"); 2234009ea47eSEdward Tomasz Napierala if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 2235009ea47eSEdward Tomasz Napierala xpt_freeze_devq(ccb->ccb_h.path, 1); 2236009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 2237009ea47eSEdward Tomasz Napierala } 2238009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_REQ_ABORTED | CAM_DEV_QFRZN; 2239009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2240009ea47eSEdward Tomasz Napierala return; 2241009ea47eSEdward Tomasz Napierala } 2242009ea47eSEdward Tomasz Napierala #endif 2243009ea47eSEdward Tomasz Napierala 2244d2d52b00SEdward Tomasz Napierala request = icl_pdu_new(is->is_conn, M_NOWAIT); 2245009ea47eSEdward Tomasz Napierala if (request == NULL) { 2246009ea47eSEdward Tomasz Napierala if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 2247009ea47eSEdward Tomasz Napierala xpt_freeze_devq(ccb->ccb_h.path, 1); 2248009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 2249009ea47eSEdward Tomasz Napierala } 2250009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_RESRC_UNAVAIL | CAM_DEV_QFRZN; 2251009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2252009ea47eSEdward Tomasz Napierala return; 2253009ea47eSEdward Tomasz Napierala } 2254009ea47eSEdward Tomasz Napierala 22557a03d007SEdward Tomasz Napierala initiator_task_tag = is->is_initiator_task_tag++; 2256604c023fSEdward Tomasz Napierala io = iscsi_outstanding_add(is, request, ccb, &initiator_task_tag); 22577a03d007SEdward Tomasz Napierala if (io == NULL) { 22587a03d007SEdward Tomasz Napierala icl_pdu_free(request); 22597a03d007SEdward Tomasz Napierala if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 22607a03d007SEdward Tomasz Napierala xpt_freeze_devq(ccb->ccb_h.path, 1); 22617a03d007SEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 22627a03d007SEdward Tomasz Napierala } 22637a03d007SEdward Tomasz Napierala ccb->ccb_h.status = CAM_RESRC_UNAVAIL | CAM_DEV_QFRZN; 22647a03d007SEdward Tomasz Napierala xpt_done(ccb); 22657a03d007SEdward Tomasz Napierala return; 22667a03d007SEdward Tomasz Napierala } 22677a03d007SEdward Tomasz Napierala 2268009ea47eSEdward Tomasz Napierala csio = &ccb->csio; 2269009ea47eSEdward Tomasz Napierala bhssc = (struct iscsi_bhs_scsi_command *)request->ip_bhs; 2270009ea47eSEdward Tomasz Napierala bhssc->bhssc_opcode = ISCSI_BHS_OPCODE_SCSI_COMMAND; 2271009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_F; 2272009ea47eSEdward Tomasz Napierala switch (csio->ccb_h.flags & CAM_DIR_MASK) { 2273009ea47eSEdward Tomasz Napierala case CAM_DIR_IN: 2274009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_R; 2275009ea47eSEdward Tomasz Napierala break; 2276009ea47eSEdward Tomasz Napierala case CAM_DIR_OUT: 2277009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_W; 2278009ea47eSEdward Tomasz Napierala break; 2279009ea47eSEdward Tomasz Napierala } 2280009ea47eSEdward Tomasz Napierala 2281462cf3baSAlexander Motin if ((ccb->ccb_h.flags & CAM_TAG_ACTION_VALID) != 0) { 2282009ea47eSEdward Tomasz Napierala switch (csio->tag_action) { 2283009ea47eSEdward Tomasz Napierala case MSG_HEAD_OF_Q_TAG: 2284009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_HOQ; 2285009ea47eSEdward Tomasz Napierala break; 2286009ea47eSEdward Tomasz Napierala case MSG_ORDERED_Q_TAG: 2287009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_ORDERED; 2288009ea47eSEdward Tomasz Napierala break; 2289009ea47eSEdward Tomasz Napierala case MSG_ACA_TASK: 2290009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_ACA; 2291009ea47eSEdward Tomasz Napierala break; 2292009ea47eSEdward Tomasz Napierala case MSG_SIMPLE_Q_TAG: 2293009ea47eSEdward Tomasz Napierala default: 2294009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_SIMPLE; 2295009ea47eSEdward Tomasz Napierala break; 2296009ea47eSEdward Tomasz Napierala } 2297462cf3baSAlexander Motin } else 2298462cf3baSAlexander Motin bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_UNTAGGED; 2299009ea47eSEdward Tomasz Napierala 2300a9f2f291SEdward Tomasz Napierala bhssc->bhssc_lun = htobe64(CAM_EXTLUN_BYTE_SWIZZLE(ccb->ccb_h.target_lun)); 23017a03d007SEdward Tomasz Napierala bhssc->bhssc_initiator_task_tag = initiator_task_tag; 2302009ea47eSEdward Tomasz Napierala bhssc->bhssc_expected_data_transfer_length = htonl(csio->dxfer_len); 2303009ea47eSEdward Tomasz Napierala KASSERT(csio->cdb_len <= sizeof(bhssc->bhssc_cdb), 2304009ea47eSEdward Tomasz Napierala ("unsupported CDB size %zd", (size_t)csio->cdb_len)); 2305009ea47eSEdward Tomasz Napierala 2306009ea47eSEdward Tomasz Napierala if (csio->ccb_h.flags & CAM_CDB_POINTER) 2307009ea47eSEdward Tomasz Napierala memcpy(&bhssc->bhssc_cdb, csio->cdb_io.cdb_ptr, csio->cdb_len); 2308009ea47eSEdward Tomasz Napierala else 2309009ea47eSEdward Tomasz Napierala memcpy(&bhssc->bhssc_cdb, csio->cdb_io.cdb_bytes, csio->cdb_len); 2310009ea47eSEdward Tomasz Napierala 2311009ea47eSEdward Tomasz Napierala if (is->is_immediate_data && 2312009ea47eSEdward Tomasz Napierala (csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT) { 2313009ea47eSEdward Tomasz Napierala len = csio->dxfer_len; 2314009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "adding %zd of immediate data", len); 2315009ea47eSEdward Tomasz Napierala if (len > is->is_first_burst_length) { 231697b84d34SNavdeep Parhar ISCSI_SESSION_DEBUG(is, "len %zd -> %d", len, is->is_first_burst_length); 2317009ea47eSEdward Tomasz Napierala len = is->is_first_burst_length; 2318009ea47eSEdward Tomasz Napierala } 231997b84d34SNavdeep Parhar if (len > is->is_max_send_data_segment_length) { 232097b84d34SNavdeep Parhar ISCSI_SESSION_DEBUG(is, "len %zd -> %d", len, 232197b84d34SNavdeep Parhar is->is_max_send_data_segment_length); 232297b84d34SNavdeep Parhar len = is->is_max_send_data_segment_length; 23233f9e1172SAlexander Motin } 2324009ea47eSEdward Tomasz Napierala 2325009ea47eSEdward Tomasz Napierala error = icl_pdu_append_data(request, csio->data_ptr, len, M_NOWAIT); 2326009ea47eSEdward Tomasz Napierala if (error != 0) { 2327938bcb04SEdward Tomasz Napierala iscsi_outstanding_remove(is, io); 2328009ea47eSEdward Tomasz Napierala icl_pdu_free(request); 2329009ea47eSEdward Tomasz Napierala if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 2330009ea47eSEdward Tomasz Napierala xpt_freeze_devq(ccb->ccb_h.path, 1); 2331009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 2332009ea47eSEdward Tomasz Napierala } 2333009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_RESRC_UNAVAIL | CAM_DEV_QFRZN; 2334009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2335009ea47eSEdward Tomasz Napierala return; 2336009ea47eSEdward Tomasz Napierala } 2337009ea47eSEdward Tomasz Napierala } 2338009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(request); 2339009ea47eSEdward Tomasz Napierala } 2340009ea47eSEdward Tomasz Napierala 2341009ea47eSEdward Tomasz Napierala static void 2342009ea47eSEdward Tomasz Napierala iscsi_action(struct cam_sim *sim, union ccb *ccb) 2343009ea47eSEdward Tomasz Napierala { 2344009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 2345009ea47eSEdward Tomasz Napierala 2346009ea47eSEdward Tomasz Napierala is = cam_sim_softc(sim); 2347009ea47eSEdward Tomasz Napierala 2348009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 2349009ea47eSEdward Tomasz Napierala 2350f1f12e40SEdward Tomasz Napierala if (is->is_terminating || 2351f1f12e40SEdward Tomasz Napierala (is->is_connected == false && fail_on_disconnection)) { 2352009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_DEV_NOT_THERE; 2353009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2354009ea47eSEdward Tomasz Napierala return; 2355009ea47eSEdward Tomasz Napierala } 2356009ea47eSEdward Tomasz Napierala 2357009ea47eSEdward Tomasz Napierala switch (ccb->ccb_h.func_code) { 2358009ea47eSEdward Tomasz Napierala case XPT_PATH_INQ: 2359009ea47eSEdward Tomasz Napierala { 2360009ea47eSEdward Tomasz Napierala struct ccb_pathinq *cpi = &ccb->cpi; 2361009ea47eSEdward Tomasz Napierala 2362009ea47eSEdward Tomasz Napierala cpi->version_num = 1; 2363009ea47eSEdward Tomasz Napierala cpi->hba_inquiry = PI_TAG_ABLE; 2364009ea47eSEdward Tomasz Napierala cpi->target_sprt = 0; 2365a9f2f291SEdward Tomasz Napierala cpi->hba_misc = PIM_EXTLUNS; 23667deb68abSEdward Tomasz Napierala /* 23677deb68abSEdward Tomasz Napierala * XXX: It shouldn't ever be NULL; this could be turned 23687deb68abSEdward Tomasz Napierala * into a KASSERT eventually. 23697deb68abSEdward Tomasz Napierala */ 23707deb68abSEdward Tomasz Napierala if (is->is_conn == NULL) 23717deb68abSEdward Tomasz Napierala ISCSI_WARN("NULL conn"); 23727deb68abSEdward Tomasz Napierala else if (is->is_conn->ic_unmapped) 23737deb68abSEdward Tomasz Napierala cpi->hba_misc |= PIM_UNMAPPED; 2374009ea47eSEdward Tomasz Napierala cpi->hba_eng_cnt = 0; 2375009ea47eSEdward Tomasz Napierala cpi->max_target = 0; 237617cf3eb1SEdward Tomasz Napierala /* 237717cf3eb1SEdward Tomasz Napierala * Note that the variable below is only relevant for targets 237817cf3eb1SEdward Tomasz Napierala * that don't claim compliance with anything above SPC2, which 237917cf3eb1SEdward Tomasz Napierala * means they don't support REPORT_LUNS. 238017cf3eb1SEdward Tomasz Napierala */ 238117cf3eb1SEdward Tomasz Napierala cpi->max_lun = 255; 2382a9f2f291SEdward Tomasz Napierala cpi->initiator_id = ~0; 23837843bd03SEdward Tomasz Napierala strlcpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); 23847843bd03SEdward Tomasz Napierala strlcpy(cpi->hba_vid, "iSCSI", HBA_IDLEN); 23857843bd03SEdward Tomasz Napierala strlcpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); 2386009ea47eSEdward Tomasz Napierala cpi->unit_number = cam_sim_unit(sim); 2387009ea47eSEdward Tomasz Napierala cpi->bus_id = cam_sim_bus(sim); 2388009ea47eSEdward Tomasz Napierala cpi->base_transfer_speed = 150000; /* XXX */ 2389009ea47eSEdward Tomasz Napierala cpi->transport = XPORT_ISCSI; 2390009ea47eSEdward Tomasz Napierala cpi->transport_version = 0; 2391009ea47eSEdward Tomasz Napierala cpi->protocol = PROTO_SCSI; 2392009ea47eSEdward Tomasz Napierala cpi->protocol_version = SCSI_REV_SPC3; 2393009ea47eSEdward Tomasz Napierala cpi->maxio = MAXPHYS; 2394009ea47eSEdward Tomasz Napierala cpi->ccb_h.status = CAM_REQ_CMP; 2395009ea47eSEdward Tomasz Napierala break; 2396009ea47eSEdward Tomasz Napierala } 2397462cf3baSAlexander Motin case XPT_GET_TRAN_SETTINGS: 2398462cf3baSAlexander Motin { 2399462cf3baSAlexander Motin struct ccb_trans_settings *cts; 2400462cf3baSAlexander Motin struct ccb_trans_settings_scsi *scsi; 2401462cf3baSAlexander Motin 2402462cf3baSAlexander Motin cts = &ccb->cts; 2403462cf3baSAlexander Motin scsi = &cts->proto_specific.scsi; 2404462cf3baSAlexander Motin 2405462cf3baSAlexander Motin cts->protocol = PROTO_SCSI; 2406462cf3baSAlexander Motin cts->protocol_version = SCSI_REV_SPC3; 2407462cf3baSAlexander Motin cts->transport = XPORT_ISCSI; 2408462cf3baSAlexander Motin cts->transport_version = 0; 2409462cf3baSAlexander Motin scsi->valid = CTS_SCSI_VALID_TQ; 2410462cf3baSAlexander Motin scsi->flags = CTS_SCSI_FLAGS_TAG_ENB; 2411462cf3baSAlexander Motin cts->ccb_h.status = CAM_REQ_CMP; 2412462cf3baSAlexander Motin break; 2413462cf3baSAlexander Motin } 2414009ea47eSEdward Tomasz Napierala case XPT_CALC_GEOMETRY: 2415009ea47eSEdward Tomasz Napierala cam_calc_geometry(&ccb->ccg, /*extended*/1); 2416009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_REQ_CMP; 2417009ea47eSEdward Tomasz Napierala break; 2418009ea47eSEdward Tomasz Napierala #if 0 2419009ea47eSEdward Tomasz Napierala /* 2420009ea47eSEdward Tomasz Napierala * XXX: What's the point? 2421009ea47eSEdward Tomasz Napierala */ 2422009ea47eSEdward Tomasz Napierala case XPT_RESET_BUS: 2423009ea47eSEdward Tomasz Napierala case XPT_TERM_IO: 2424009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "faking success for reset, abort, or term_io"); 2425009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_REQ_CMP; 2426009ea47eSEdward Tomasz Napierala break; 2427009ea47eSEdward Tomasz Napierala #endif 2428aa75114cSAlexander Motin case XPT_ABORT: 2429aa75114cSAlexander Motin iscsi_action_abort(is, ccb); 2430aa75114cSAlexander Motin return; 2431009ea47eSEdward Tomasz Napierala case XPT_SCSI_IO: 2432009ea47eSEdward Tomasz Napierala iscsi_action_scsiio(is, ccb); 2433009ea47eSEdward Tomasz Napierala return; 2434009ea47eSEdward Tomasz Napierala default: 2435009ea47eSEdward Tomasz Napierala #if 0 2436009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "got unsupported code 0x%x", ccb->ccb_h.func_code); 2437009ea47eSEdward Tomasz Napierala #endif 2438009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_FUNC_NOTAVAIL; 2439009ea47eSEdward Tomasz Napierala break; 2440009ea47eSEdward Tomasz Napierala } 2441009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2442009ea47eSEdward Tomasz Napierala } 2443009ea47eSEdward Tomasz Napierala 2444009ea47eSEdward Tomasz Napierala static void 2445009ea47eSEdward Tomasz Napierala iscsi_poll(struct cam_sim *sim) 2446009ea47eSEdward Tomasz Napierala { 2447009ea47eSEdward Tomasz Napierala 2448009ea47eSEdward Tomasz Napierala KASSERT(0, ("%s: you're not supposed to be here", __func__)); 2449009ea47eSEdward Tomasz Napierala } 2450009ea47eSEdward Tomasz Napierala 2451009ea47eSEdward Tomasz Napierala static void 2452481b36c6SSteven Hartland iscsi_terminate_sessions(struct iscsi_softc *sc) 2453009ea47eSEdward Tomasz Napierala { 2454009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 2455009ea47eSEdward Tomasz Napierala 2456481b36c6SSteven Hartland sx_slock(&sc->sc_lock); 2457481b36c6SSteven Hartland TAILQ_FOREACH(is, &sc->sc_sessions, is_next) 2458481b36c6SSteven Hartland iscsi_session_terminate(is); 2459481b36c6SSteven Hartland while(!TAILQ_EMPTY(&sc->sc_sessions)) { 2460481b36c6SSteven Hartland ISCSI_DEBUG("waiting for sessions to terminate"); 2461481b36c6SSteven Hartland cv_wait(&sc->sc_cv, &sc->sc_lock); 2462481b36c6SSteven Hartland } 2463481b36c6SSteven Hartland ISCSI_DEBUG("all sessions terminated"); 2464481b36c6SSteven Hartland sx_sunlock(&sc->sc_lock); 2465481b36c6SSteven Hartland } 2466481b36c6SSteven Hartland 2467481b36c6SSteven Hartland static void 2468481b36c6SSteven Hartland iscsi_shutdown_pre(struct iscsi_softc *sc) 2469481b36c6SSteven Hartland { 2470481b36c6SSteven Hartland struct iscsi_session *is; 2471481b36c6SSteven Hartland 2472481b36c6SSteven Hartland if (!fail_on_shutdown) 2473481b36c6SSteven Hartland return; 2474009ea47eSEdward Tomasz Napierala 2475e553ca49SEdward Tomasz Napierala /* 2476e553ca49SEdward Tomasz Napierala * If we have any sessions waiting for reconnection, request 2477e553ca49SEdward Tomasz Napierala * maintenance thread to fail them immediately instead of waiting 2478e553ca49SEdward Tomasz Napierala * for reconnect timeout. 2479481b36c6SSteven Hartland * 2480481b36c6SSteven Hartland * This prevents LUNs with mounted filesystems that are supported 2481481b36c6SSteven Hartland * by disconnected iSCSI sessions from hanging, however it will 2482481b36c6SSteven Hartland * fail all queued BIOs. 2483e553ca49SEdward Tomasz Napierala */ 2484481b36c6SSteven Hartland ISCSI_DEBUG("forcing failing all disconnected sessions due to shutdown"); 2485481b36c6SSteven Hartland 2486481b36c6SSteven Hartland fail_on_disconnection = 1; 2487481b36c6SSteven Hartland 2488009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 2489e553ca49SEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 2490e553ca49SEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 2491481b36c6SSteven Hartland if (!is->is_connected) { 2492481b36c6SSteven Hartland ISCSI_SESSION_DEBUG(is, "force failing disconnected session early"); 2493e553ca49SEdward Tomasz Napierala iscsi_session_reconnect(is); 2494481b36c6SSteven Hartland } 2495e553ca49SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 2496e553ca49SEdward Tomasz Napierala } 2497009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 2498009ea47eSEdward Tomasz Napierala } 2499009ea47eSEdward Tomasz Napierala 2500481b36c6SSteven Hartland static void 2501481b36c6SSteven Hartland iscsi_shutdown_post(struct iscsi_softc *sc) 2502481b36c6SSteven Hartland { 2503481b36c6SSteven Hartland 2504e54fb4ffSAndriy Gapon if (panicstr == NULL) { 2505481b36c6SSteven Hartland ISCSI_DEBUG("removing all sessions due to shutdown"); 2506481b36c6SSteven Hartland iscsi_terminate_sessions(sc); 2507481b36c6SSteven Hartland } 2508e54fb4ffSAndriy Gapon } 2509481b36c6SSteven Hartland 2510009ea47eSEdward Tomasz Napierala static int 2511009ea47eSEdward Tomasz Napierala iscsi_load(void) 2512009ea47eSEdward Tomasz Napierala { 2513009ea47eSEdward Tomasz Napierala int error; 2514009ea47eSEdward Tomasz Napierala 2515009ea47eSEdward Tomasz Napierala sc = malloc(sizeof(*sc), M_ISCSI, M_ZERO | M_WAITOK); 2516009ea47eSEdward Tomasz Napierala sx_init(&sc->sc_lock, "iscsi"); 2517009ea47eSEdward Tomasz Napierala TAILQ_INIT(&sc->sc_sessions); 2518009ea47eSEdward Tomasz Napierala cv_init(&sc->sc_cv, "iscsi_cv"); 2519009ea47eSEdward Tomasz Napierala 2520009ea47eSEdward Tomasz Napierala iscsi_outstanding_zone = uma_zcreate("iscsi_outstanding", 2521009ea47eSEdward Tomasz Napierala sizeof(struct iscsi_outstanding), NULL, NULL, NULL, NULL, 2522c28c09c1SEdward Tomasz Napierala UMA_ALIGN_PTR, 0); 2523009ea47eSEdward Tomasz Napierala 2524009ea47eSEdward Tomasz Napierala error = make_dev_p(MAKEDEV_CHECKNAME, &sc->sc_cdev, &iscsi_cdevsw, 2525009ea47eSEdward Tomasz Napierala NULL, UID_ROOT, GID_WHEEL, 0600, "iscsi"); 2526009ea47eSEdward Tomasz Napierala if (error != 0) { 2527009ea47eSEdward Tomasz Napierala ISCSI_WARN("failed to create device node, error %d", error); 2528009ea47eSEdward Tomasz Napierala return (error); 2529009ea47eSEdward Tomasz Napierala } 2530009ea47eSEdward Tomasz Napierala sc->sc_cdev->si_drv1 = sc; 2531009ea47eSEdward Tomasz Napierala 2532481b36c6SSteven Hartland sc->sc_shutdown_pre_eh = EVENTHANDLER_REGISTER(shutdown_pre_sync, 2533481b36c6SSteven Hartland iscsi_shutdown_pre, sc, SHUTDOWN_PRI_FIRST); 2534481b36c6SSteven Hartland /* 2535481b36c6SSteven Hartland * shutdown_post_sync needs to run after filesystem shutdown and before 2536481b36c6SSteven Hartland * CAM shutdown - otherwise when rebooting with an iSCSI session that is 2537481b36c6SSteven Hartland * disconnected but has outstanding requests, dashutdown() will hang on 2538481b36c6SSteven Hartland * cam_periph_runccb(). 2539481b36c6SSteven Hartland */ 2540481b36c6SSteven Hartland sc->sc_shutdown_post_eh = EVENTHANDLER_REGISTER(shutdown_post_sync, 2541481b36c6SSteven Hartland iscsi_shutdown_post, sc, SHUTDOWN_PRI_DEFAULT - 1); 2542009ea47eSEdward Tomasz Napierala 2543009ea47eSEdward Tomasz Napierala return (0); 2544009ea47eSEdward Tomasz Napierala } 2545009ea47eSEdward Tomasz Napierala 2546009ea47eSEdward Tomasz Napierala static int 2547009ea47eSEdward Tomasz Napierala iscsi_unload(void) 2548009ea47eSEdward Tomasz Napierala { 2549009ea47eSEdward Tomasz Napierala 2550a667cf73SEdward Tomasz Napierala if (sc->sc_cdev != NULL) { 2551009ea47eSEdward Tomasz Napierala ISCSI_DEBUG("removing device node"); 2552009ea47eSEdward Tomasz Napierala destroy_dev(sc->sc_cdev); 2553009ea47eSEdward Tomasz Napierala ISCSI_DEBUG("device node removed"); 2554a667cf73SEdward Tomasz Napierala } 2555009ea47eSEdward Tomasz Napierala 2556481b36c6SSteven Hartland if (sc->sc_shutdown_pre_eh != NULL) 2557481b36c6SSteven Hartland EVENTHANDLER_DEREGISTER(shutdown_pre_sync, sc->sc_shutdown_pre_eh); 2558481b36c6SSteven Hartland if (sc->sc_shutdown_post_eh != NULL) 2559481b36c6SSteven Hartland EVENTHANDLER_DEREGISTER(shutdown_post_sync, sc->sc_shutdown_post_eh); 2560009ea47eSEdward Tomasz Napierala 2561481b36c6SSteven Hartland iscsi_terminate_sessions(sc); 2562009ea47eSEdward Tomasz Napierala 2563009ea47eSEdward Tomasz Napierala uma_zdestroy(iscsi_outstanding_zone); 2564009ea47eSEdward Tomasz Napierala sx_destroy(&sc->sc_lock); 2565009ea47eSEdward Tomasz Napierala cv_destroy(&sc->sc_cv); 2566009ea47eSEdward Tomasz Napierala free(sc, M_ISCSI); 2567009ea47eSEdward Tomasz Napierala return (0); 2568009ea47eSEdward Tomasz Napierala } 2569009ea47eSEdward Tomasz Napierala 2570009ea47eSEdward Tomasz Napierala static int 2571009ea47eSEdward Tomasz Napierala iscsi_quiesce(void) 2572009ea47eSEdward Tomasz Napierala { 2573009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 2574009ea47eSEdward Tomasz Napierala if (!TAILQ_EMPTY(&sc->sc_sessions)) { 2575009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 2576009ea47eSEdward Tomasz Napierala return (EBUSY); 2577009ea47eSEdward Tomasz Napierala } 2578009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 2579009ea47eSEdward Tomasz Napierala return (0); 2580009ea47eSEdward Tomasz Napierala } 2581009ea47eSEdward Tomasz Napierala 2582009ea47eSEdward Tomasz Napierala static int 2583009ea47eSEdward Tomasz Napierala iscsi_modevent(module_t mod, int what, void *arg) 2584009ea47eSEdward Tomasz Napierala { 2585009ea47eSEdward Tomasz Napierala int error; 2586009ea47eSEdward Tomasz Napierala 2587009ea47eSEdward Tomasz Napierala switch (what) { 2588009ea47eSEdward Tomasz Napierala case MOD_LOAD: 2589009ea47eSEdward Tomasz Napierala error = iscsi_load(); 2590009ea47eSEdward Tomasz Napierala break; 2591009ea47eSEdward Tomasz Napierala case MOD_UNLOAD: 2592009ea47eSEdward Tomasz Napierala error = iscsi_unload(); 2593009ea47eSEdward Tomasz Napierala break; 2594009ea47eSEdward Tomasz Napierala case MOD_QUIESCE: 2595009ea47eSEdward Tomasz Napierala error = iscsi_quiesce(); 2596009ea47eSEdward Tomasz Napierala break; 2597009ea47eSEdward Tomasz Napierala default: 2598009ea47eSEdward Tomasz Napierala error = EINVAL; 2599009ea47eSEdward Tomasz Napierala break; 2600009ea47eSEdward Tomasz Napierala } 2601009ea47eSEdward Tomasz Napierala return (error); 2602009ea47eSEdward Tomasz Napierala } 2603009ea47eSEdward Tomasz Napierala 2604009ea47eSEdward Tomasz Napierala moduledata_t iscsi_data = { 2605009ea47eSEdward Tomasz Napierala "iscsi", 2606009ea47eSEdward Tomasz Napierala iscsi_modevent, 2607009ea47eSEdward Tomasz Napierala 0 2608009ea47eSEdward Tomasz Napierala }; 2609009ea47eSEdward Tomasz Napierala 2610009ea47eSEdward Tomasz Napierala DECLARE_MODULE(iscsi, iscsi_data, SI_SUB_DRIVERS, SI_ORDER_MIDDLE); 2611009ea47eSEdward Tomasz Napierala MODULE_DEPEND(iscsi, cam, 1, 1, 1); 2612009ea47eSEdward Tomasz Napierala MODULE_DEPEND(iscsi, icl, 1, 1, 1); 2613