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 * 6009ea47eSEdward Tomasz Napierala * This software was developed by Edward Tomasz Napierala under sponsorship 7009ea47eSEdward Tomasz Napierala * from the FreeBSD Foundation. 8009ea47eSEdward Tomasz Napierala * 9009ea47eSEdward Tomasz Napierala * Redistribution and use in source and binary forms, with or without 10009ea47eSEdward Tomasz Napierala * modification, are permitted provided that the following conditions 11009ea47eSEdward Tomasz Napierala * are met: 12009ea47eSEdward Tomasz Napierala * 1. Redistributions of source code must retain the above copyright 13009ea47eSEdward Tomasz Napierala * notice, this list of conditions and the following disclaimer. 14009ea47eSEdward Tomasz Napierala * 2. Redistributions in binary form must reproduce the above copyright 15009ea47eSEdward Tomasz Napierala * notice, this list of conditions and the following disclaimer in the 16009ea47eSEdward Tomasz Napierala * documentation and/or other materials provided with the distribution. 17009ea47eSEdward Tomasz Napierala * 18009ea47eSEdward Tomasz Napierala * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19009ea47eSEdward Tomasz Napierala * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20009ea47eSEdward Tomasz Napierala * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21009ea47eSEdward Tomasz Napierala * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22009ea47eSEdward Tomasz Napierala * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23009ea47eSEdward Tomasz Napierala * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24009ea47eSEdward Tomasz Napierala * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25009ea47eSEdward Tomasz Napierala * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26009ea47eSEdward Tomasz Napierala * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27009ea47eSEdward Tomasz Napierala * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28009ea47eSEdward Tomasz Napierala * SUCH DAMAGE. 29009ea47eSEdward Tomasz Napierala * 30009ea47eSEdward Tomasz Napierala */ 31009ea47eSEdward Tomasz Napierala 32b7a65e39SEdward Tomasz Napierala #include <sys/cdefs.h> 33b7a65e39SEdward Tomasz Napierala __FBSDID("$FreeBSD$"); 34b7a65e39SEdward Tomasz Napierala 35009ea47eSEdward Tomasz Napierala #include <sys/param.h> 36009ea47eSEdward Tomasz Napierala #include <sys/condvar.h> 37009ea47eSEdward Tomasz Napierala #include <sys/conf.h> 38a9f2f291SEdward Tomasz Napierala #include <sys/endian.h> 39009ea47eSEdward Tomasz Napierala #include <sys/eventhandler.h> 40009ea47eSEdward Tomasz Napierala #include <sys/file.h> 41009ea47eSEdward Tomasz Napierala #include <sys/kernel.h> 42009ea47eSEdward Tomasz Napierala #include <sys/kthread.h> 43009ea47eSEdward Tomasz Napierala #include <sys/lock.h> 44009ea47eSEdward Tomasz Napierala #include <sys/malloc.h> 45009ea47eSEdward Tomasz Napierala #include <sys/mutex.h> 46009ea47eSEdward Tomasz Napierala #include <sys/module.h> 47f41492b0SEdward Tomasz Napierala #include <sys/socket.h> 48009ea47eSEdward Tomasz Napierala #include <sys/sysctl.h> 49009ea47eSEdward Tomasz Napierala #include <sys/systm.h> 50009ea47eSEdward Tomasz Napierala #include <sys/sx.h> 51009ea47eSEdward Tomasz Napierala #include <vm/uma.h> 52009ea47eSEdward Tomasz Napierala 53009ea47eSEdward Tomasz Napierala #include <cam/cam.h> 54009ea47eSEdward Tomasz Napierala #include <cam/cam_ccb.h> 55009ea47eSEdward Tomasz Napierala #include <cam/cam_xpt.h> 56009ea47eSEdward Tomasz Napierala #include <cam/cam_debug.h> 57009ea47eSEdward Tomasz Napierala #include <cam/cam_sim.h> 58009ea47eSEdward Tomasz Napierala #include <cam/cam_xpt_sim.h> 59009ea47eSEdward Tomasz Napierala #include <cam/cam_xpt_periph.h> 60009ea47eSEdward Tomasz Napierala #include <cam/cam_periph.h> 61009ea47eSEdward Tomasz Napierala #include <cam/scsi/scsi_all.h> 62009ea47eSEdward Tomasz Napierala #include <cam/scsi/scsi_message.h> 63009ea47eSEdward Tomasz Napierala 64ddc5fd90SEdward Tomasz Napierala #include <dev/iscsi/icl.h> 65321b17ecSEdward Tomasz Napierala #include <dev/iscsi/icl_wrappers.h> 66ddc5fd90SEdward Tomasz Napierala #include <dev/iscsi/iscsi_ioctl.h> 67ddc5fd90SEdward Tomasz Napierala #include <dev/iscsi/iscsi_proto.h> 68ddc5fd90SEdward Tomasz Napierala #include <dev/iscsi/iscsi.h> 69009ea47eSEdward Tomasz Napierala 70009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 71009ea47eSEdward Tomasz Napierala #include <sys/socketvar.h> 72009ea47eSEdward Tomasz Napierala #endif 73009ea47eSEdward Tomasz Napierala 742ebde326SEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 752ebde326SEdward Tomasz Napierala FEATURE(iscsi_kernel_proxy, "iSCSI initiator built with ICL_KERNEL_PROXY"); 762ebde326SEdward Tomasz Napierala #endif 772ebde326SEdward Tomasz Napierala 78009ea47eSEdward Tomasz Napierala /* 79009ea47eSEdward Tomasz Napierala * XXX: This is global so the iscsi_unload() can access it. 80009ea47eSEdward Tomasz Napierala * Think about how to do this properly. 81009ea47eSEdward Tomasz Napierala */ 82009ea47eSEdward Tomasz Napierala static struct iscsi_softc *sc; 83009ea47eSEdward Tomasz Napierala 84e0d69c5aSPawel Biernacki SYSCTL_NODE(_kern, OID_AUTO, iscsi, CTLFLAG_RD | CTLFLAG_MPSAFE, 0, 85e0d69c5aSPawel Biernacki "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 struct iscsi_outstanding *iscsi_outstanding_find(struct iscsi_session *is, 175009ea47eSEdward Tomasz Napierala uint32_t initiator_task_tag); 176aa75114cSAlexander Motin static struct iscsi_outstanding *iscsi_outstanding_add(struct iscsi_session *is, 177604c023fSEdward Tomasz Napierala struct icl_pdu *request, union ccb *ccb, 178604c023fSEdward Tomasz Napierala uint32_t *initiator_task_tagp); 179009ea47eSEdward Tomasz Napierala static void iscsi_outstanding_remove(struct iscsi_session *is, 180009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io); 181009ea47eSEdward Tomasz Napierala 182009ea47eSEdward Tomasz Napierala static bool 183009ea47eSEdward Tomasz Napierala iscsi_pdu_prepare(struct icl_pdu *request) 184009ea47eSEdward Tomasz Napierala { 185009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 186009ea47eSEdward Tomasz Napierala struct iscsi_bhs_scsi_command *bhssc; 187009ea47eSEdward Tomasz Napierala 188009ea47eSEdward Tomasz Napierala is = PDU_SESSION(request); 189009ea47eSEdward Tomasz Napierala 190009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 191009ea47eSEdward Tomasz Napierala 192009ea47eSEdward Tomasz Napierala /* 193009ea47eSEdward Tomasz Napierala * We're only using fields common for all the request 194009ea47eSEdward Tomasz Napierala * (initiator -> target) PDUs. 195009ea47eSEdward Tomasz Napierala */ 196009ea47eSEdward Tomasz Napierala bhssc = (struct iscsi_bhs_scsi_command *)request->ip_bhs; 197009ea47eSEdward Tomasz Napierala 198009ea47eSEdward Tomasz Napierala /* 199009ea47eSEdward Tomasz Napierala * Data-Out PDU does not contain CmdSN. 200009ea47eSEdward Tomasz Napierala */ 201009ea47eSEdward Tomasz Napierala if (bhssc->bhssc_opcode != ISCSI_BHS_OPCODE_SCSI_DATA_OUT) { 2022124e3b0SAlexander Motin if (ISCSI_SNGT(is->is_cmdsn, is->is_maxcmdsn) && 203009ea47eSEdward Tomasz Napierala (bhssc->bhssc_opcode & ISCSI_BHS_OPCODE_IMMEDIATE) == 0) { 204009ea47eSEdward Tomasz Napierala /* 205009ea47eSEdward Tomasz Napierala * Current MaxCmdSN prevents us from sending any more 206009ea47eSEdward Tomasz Napierala * SCSI Command PDUs to the target; postpone the PDU. 207009ea47eSEdward Tomasz Napierala * It will get resent by either iscsi_pdu_queue(), 208009ea47eSEdward Tomasz Napierala * or by maintenance thread. 209009ea47eSEdward Tomasz Napierala */ 210009ea47eSEdward Tomasz Napierala #if 0 2112124e3b0SAlexander Motin ISCSI_SESSION_DEBUG(is, "postponing send, CmdSN %u, " 2122124e3b0SAlexander Motin "ExpCmdSN %u, MaxCmdSN %u, opcode 0x%x", 2132124e3b0SAlexander Motin is->is_cmdsn, is->is_expcmdsn, is->is_maxcmdsn, 2142124e3b0SAlexander Motin bhssc->bhssc_opcode); 215009ea47eSEdward Tomasz Napierala #endif 216009ea47eSEdward Tomasz Napierala return (true); 217009ea47eSEdward Tomasz Napierala } 218009ea47eSEdward Tomasz Napierala bhssc->bhssc_cmdsn = htonl(is->is_cmdsn); 219009ea47eSEdward Tomasz Napierala if ((bhssc->bhssc_opcode & ISCSI_BHS_OPCODE_IMMEDIATE) == 0) 220009ea47eSEdward Tomasz Napierala is->is_cmdsn++; 221009ea47eSEdward Tomasz Napierala } 222009ea47eSEdward Tomasz Napierala bhssc->bhssc_expstatsn = htonl(is->is_statsn + 1); 223009ea47eSEdward Tomasz Napierala 224009ea47eSEdward Tomasz Napierala return (false); 225009ea47eSEdward Tomasz Napierala } 226009ea47eSEdward Tomasz Napierala 227009ea47eSEdward Tomasz Napierala static void 228009ea47eSEdward Tomasz Napierala iscsi_session_send_postponed(struct iscsi_session *is) 229009ea47eSEdward Tomasz Napierala { 230009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 231009ea47eSEdward Tomasz Napierala bool postpone; 232009ea47eSEdward Tomasz Napierala 233009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 234009ea47eSEdward Tomasz Napierala 2354c9ea0ceSAlexander Motin if (STAILQ_EMPTY(&is->is_postponed)) 2364c9ea0ceSAlexander Motin return; 2374c9ea0ceSAlexander Motin while ((request = STAILQ_FIRST(&is->is_postponed)) != NULL) { 238009ea47eSEdward Tomasz Napierala postpone = iscsi_pdu_prepare(request); 239009ea47eSEdward Tomasz Napierala if (postpone) 2404c9ea0ceSAlexander Motin return; 24116c158a5SEdward Tomasz Napierala STAILQ_REMOVE_HEAD(&is->is_postponed, ip_next); 242009ea47eSEdward Tomasz Napierala icl_pdu_queue(request); 243009ea47eSEdward Tomasz Napierala } 2444c9ea0ceSAlexander Motin xpt_release_simq(is->is_sim, 1); 245009ea47eSEdward Tomasz Napierala } 246009ea47eSEdward Tomasz Napierala 247009ea47eSEdward Tomasz Napierala static void 248009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(struct icl_pdu *request) 249009ea47eSEdward Tomasz Napierala { 250009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 251009ea47eSEdward Tomasz Napierala bool postpone; 252009ea47eSEdward Tomasz Napierala 253009ea47eSEdward Tomasz Napierala is = PDU_SESSION(request); 254009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 255009ea47eSEdward Tomasz Napierala iscsi_session_send_postponed(is); 256009ea47eSEdward Tomasz Napierala postpone = iscsi_pdu_prepare(request); 257009ea47eSEdward Tomasz Napierala if (postpone) { 2584c9ea0ceSAlexander Motin if (STAILQ_EMPTY(&is->is_postponed)) 2594c9ea0ceSAlexander Motin xpt_freeze_simq(is->is_sim, 1); 26016c158a5SEdward Tomasz Napierala STAILQ_INSERT_TAIL(&is->is_postponed, request, ip_next); 261009ea47eSEdward Tomasz Napierala return; 262009ea47eSEdward Tomasz Napierala } 263009ea47eSEdward Tomasz Napierala icl_pdu_queue(request); 264009ea47eSEdward Tomasz Napierala } 265009ea47eSEdward Tomasz Napierala 266009ea47eSEdward Tomasz Napierala static void 267009ea47eSEdward Tomasz Napierala iscsi_pdu_queue(struct icl_pdu *request) 268009ea47eSEdward Tomasz Napierala { 269009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 270009ea47eSEdward Tomasz Napierala 271009ea47eSEdward Tomasz Napierala is = PDU_SESSION(request); 272009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 273009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(request); 274009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 275009ea47eSEdward Tomasz Napierala } 276009ea47eSEdward Tomasz Napierala 277009ea47eSEdward Tomasz Napierala static void 278009ea47eSEdward Tomasz Napierala iscsi_session_logout(struct iscsi_session *is) 279009ea47eSEdward Tomasz Napierala { 280009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 281009ea47eSEdward Tomasz Napierala struct iscsi_bhs_logout_request *bhslr; 282009ea47eSEdward Tomasz Napierala 283d2d52b00SEdward Tomasz Napierala request = icl_pdu_new(is->is_conn, M_NOWAIT); 284009ea47eSEdward Tomasz Napierala if (request == NULL) 285009ea47eSEdward Tomasz Napierala return; 286009ea47eSEdward Tomasz Napierala 287009ea47eSEdward Tomasz Napierala bhslr = (struct iscsi_bhs_logout_request *)request->ip_bhs; 288009ea47eSEdward Tomasz Napierala bhslr->bhslr_opcode = ISCSI_BHS_OPCODE_LOGOUT_REQUEST; 289009ea47eSEdward Tomasz Napierala bhslr->bhslr_reason = BHSLR_REASON_CLOSE_SESSION; 290009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(request); 291009ea47eSEdward Tomasz Napierala } 292009ea47eSEdward Tomasz Napierala 293009ea47eSEdward Tomasz Napierala static void 294aa75114cSAlexander Motin iscsi_session_terminate_task(struct iscsi_session *is, 295ad10496cSAndriy Gapon struct iscsi_outstanding *io, cam_status status) 296aa75114cSAlexander Motin { 297aa75114cSAlexander Motin 298e204e2cdSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 299e204e2cdSEdward Tomasz Napierala 300aa75114cSAlexander Motin if (io->io_ccb != NULL) { 301aa75114cSAlexander Motin io->io_ccb->ccb_h.status &= ~(CAM_SIM_QUEUED | CAM_STATUS_MASK); 302ad10496cSAndriy Gapon io->io_ccb->ccb_h.status |= status; 303aa75114cSAlexander Motin if ((io->io_ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 304aa75114cSAlexander Motin io->io_ccb->ccb_h.status |= CAM_DEV_QFRZN; 305aa75114cSAlexander Motin xpt_freeze_devq(io->io_ccb->ccb_h.path, 1); 306aa75114cSAlexander Motin ISCSI_SESSION_DEBUG(is, "freezing devq"); 307aa75114cSAlexander Motin } 308aa75114cSAlexander Motin xpt_done(io->io_ccb); 309aa75114cSAlexander Motin } 310aa75114cSAlexander Motin iscsi_outstanding_remove(is, io); 311aa75114cSAlexander Motin } 312aa75114cSAlexander Motin 313aa75114cSAlexander Motin static void 314ad10496cSAndriy Gapon iscsi_session_terminate_tasks(struct iscsi_session *is, cam_status status) 315009ea47eSEdward Tomasz Napierala { 316009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io, *tmp; 317009ea47eSEdward Tomasz Napierala 318009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 319009ea47eSEdward Tomasz Napierala 320009ea47eSEdward Tomasz Napierala TAILQ_FOREACH_SAFE(io, &is->is_outstanding, io_next, tmp) { 321ad10496cSAndriy Gapon iscsi_session_terminate_task(is, io, status); 322009ea47eSEdward Tomasz Napierala } 323009ea47eSEdward Tomasz Napierala } 324009ea47eSEdward Tomasz Napierala 325009ea47eSEdward Tomasz Napierala static void 326f1f12e40SEdward Tomasz Napierala iscsi_session_cleanup(struct iscsi_session *is, bool destroy_sim) 327009ea47eSEdward Tomasz Napierala { 328009ea47eSEdward Tomasz Napierala struct icl_pdu *pdu; 329009ea47eSEdward Tomasz Napierala 330f1f12e40SEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 331009ea47eSEdward Tomasz Napierala 332009ea47eSEdward Tomasz Napierala /* 333009ea47eSEdward Tomasz Napierala * Don't queue any new PDUs. 334009ea47eSEdward Tomasz Napierala */ 335009ea47eSEdward Tomasz Napierala if (is->is_sim != NULL && is->is_simq_frozen == false) { 336009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing"); 337009ea47eSEdward Tomasz Napierala xpt_freeze_simq(is->is_sim, 1); 338009ea47eSEdward Tomasz Napierala is->is_simq_frozen = true; 339009ea47eSEdward Tomasz Napierala } 340009ea47eSEdward Tomasz Napierala 341009ea47eSEdward Tomasz Napierala /* 342009ea47eSEdward Tomasz Napierala * Remove postponed PDUs. 343009ea47eSEdward Tomasz Napierala */ 3444c9ea0ceSAlexander Motin if (!STAILQ_EMPTY(&is->is_postponed)) 3454c9ea0ceSAlexander Motin xpt_release_simq(is->is_sim, 1); 3464c9ea0ceSAlexander Motin while ((pdu = STAILQ_FIRST(&is->is_postponed)) != NULL) { 34716c158a5SEdward Tomasz Napierala STAILQ_REMOVE_HEAD(&is->is_postponed, ip_next); 348009ea47eSEdward Tomasz Napierala icl_pdu_free(pdu); 349009ea47eSEdward Tomasz Napierala } 350009ea47eSEdward Tomasz Napierala 351f1f12e40SEdward Tomasz Napierala if (destroy_sim == false) { 352009ea47eSEdward Tomasz Napierala /* 353009ea47eSEdward Tomasz Napierala * Terminate SCSI tasks, asking CAM to requeue them. 354009ea47eSEdward Tomasz Napierala */ 355ad10496cSAndriy Gapon iscsi_session_terminate_tasks(is, CAM_REQUEUE_REQ); 356f1f12e40SEdward Tomasz Napierala return; 357f1f12e40SEdward Tomasz Napierala } 358f1f12e40SEdward Tomasz Napierala 359ad10496cSAndriy Gapon iscsi_session_terminate_tasks(is, CAM_DEV_NOT_THERE); 360f1f12e40SEdward Tomasz Napierala 361f1f12e40SEdward Tomasz Napierala if (is->is_sim == NULL) 362f1f12e40SEdward Tomasz Napierala return; 363f1f12e40SEdward Tomasz Napierala 364f1f12e40SEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "deregistering SIM"); 365f1f12e40SEdward Tomasz Napierala xpt_async(AC_LOST_DEVICE, is->is_path, NULL); 366f1f12e40SEdward Tomasz Napierala 367f1f12e40SEdward Tomasz Napierala if (is->is_simq_frozen) { 368f1f12e40SEdward Tomasz Napierala is->is_simq_frozen = false; 369186bcdaaSEdward Tomasz Napierala xpt_release_simq(is->is_sim, 1); 370f1f12e40SEdward Tomasz Napierala } 371f1f12e40SEdward Tomasz Napierala 372f1f12e40SEdward Tomasz Napierala xpt_free_path(is->is_path); 373f1f12e40SEdward Tomasz Napierala is->is_path = NULL; 374f1f12e40SEdward Tomasz Napierala xpt_bus_deregister(cam_sim_path(is->is_sim)); 375f1f12e40SEdward Tomasz Napierala cam_sim_free(is->is_sim, TRUE /*free_devq*/); 376f1f12e40SEdward Tomasz Napierala is->is_sim = NULL; 377f1f12e40SEdward Tomasz Napierala is->is_devq = NULL; 378f1f12e40SEdward Tomasz Napierala } 379f1f12e40SEdward Tomasz Napierala 380f1f12e40SEdward Tomasz Napierala static void 381f1f12e40SEdward Tomasz Napierala iscsi_maintenance_thread_reconnect(struct iscsi_session *is) 382f1f12e40SEdward Tomasz Napierala { 383f1f12e40SEdward Tomasz Napierala 384f1f12e40SEdward Tomasz Napierala icl_conn_close(is->is_conn); 385f1f12e40SEdward Tomasz Napierala 386f1f12e40SEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 387f1f12e40SEdward Tomasz Napierala 388f1f12e40SEdward Tomasz Napierala is->is_connected = false; 389f1f12e40SEdward Tomasz Napierala is->is_reconnecting = false; 390f1f12e40SEdward Tomasz Napierala is->is_login_phase = false; 391f1f12e40SEdward Tomasz Napierala 392f1f12e40SEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 393f1f12e40SEdward Tomasz Napierala if (is->is_login_pdu != NULL) { 394f1f12e40SEdward Tomasz Napierala icl_pdu_free(is->is_login_pdu); 395f1f12e40SEdward Tomasz Napierala is->is_login_pdu = NULL; 396f1f12e40SEdward Tomasz Napierala } 397f1f12e40SEdward Tomasz Napierala cv_signal(&is->is_login_cv); 398f1f12e40SEdward Tomasz Napierala #endif 399f1f12e40SEdward Tomasz Napierala 400f1f12e40SEdward Tomasz Napierala if (fail_on_disconnection) { 401f1f12e40SEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "connection failed, destroying devices"); 402f1f12e40SEdward Tomasz Napierala iscsi_session_cleanup(is, true); 403f1f12e40SEdward Tomasz Napierala } else { 404f1f12e40SEdward Tomasz Napierala iscsi_session_cleanup(is, false); 405f1f12e40SEdward Tomasz Napierala } 406009ea47eSEdward Tomasz Napierala 407009ea47eSEdward Tomasz Napierala KASSERT(TAILQ_EMPTY(&is->is_outstanding), 408009ea47eSEdward Tomasz Napierala ("destroying session with active tasks")); 40916c158a5SEdward Tomasz Napierala KASSERT(STAILQ_EMPTY(&is->is_postponed), 410009ea47eSEdward Tomasz Napierala ("destroying session with postponed PDUs")); 411009ea47eSEdward Tomasz Napierala 412ba165a31SEdward Tomasz Napierala if (is->is_conf.isc_enable == 0 && is->is_conf.isc_discovery == 0) { 413ba165a31SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 414ba165a31SEdward Tomasz Napierala return; 415ba165a31SEdward Tomasz Napierala } 416ba165a31SEdward Tomasz Napierala 417009ea47eSEdward Tomasz Napierala /* 418009ea47eSEdward Tomasz Napierala * Request immediate reconnection from iscsid(8). 419009ea47eSEdward Tomasz Napierala */ 420009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "waking up iscsid(8)"); 421009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = true; 422009ea47eSEdward Tomasz Napierala strlcpy(is->is_reason, "Waiting for iscsid(8)", sizeof(is->is_reason)); 423009ea47eSEdward Tomasz Napierala is->is_timeout = 0; 424009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 425009ea47eSEdward Tomasz Napierala cv_signal(&is->is_softc->sc_cv); 426009ea47eSEdward Tomasz Napierala } 427009ea47eSEdward Tomasz Napierala 428009ea47eSEdward Tomasz Napierala static void 429009ea47eSEdward Tomasz Napierala iscsi_maintenance_thread_terminate(struct iscsi_session *is) 430009ea47eSEdward Tomasz Napierala { 431009ea47eSEdward Tomasz Napierala struct iscsi_softc *sc; 432009ea47eSEdward Tomasz Napierala 433009ea47eSEdward Tomasz Napierala sc = is->is_softc; 434009ea47eSEdward Tomasz Napierala sx_xlock(&sc->sc_lock); 43520e9cab5SAndriy Gapon TAILQ_REMOVE(&sc->sc_sessions, is, is_next); 43620e9cab5SAndriy Gapon sx_xunlock(&sc->sc_lock); 437009ea47eSEdward Tomasz Napierala 438009ea47eSEdward Tomasz Napierala icl_conn_close(is->is_conn); 439674074daSEdward Tomasz Napierala callout_drain(&is->is_callout); 440009ea47eSEdward Tomasz Napierala 441009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 442009ea47eSEdward Tomasz Napierala 443009ea47eSEdward Tomasz Napierala KASSERT(is->is_terminating, ("is_terminating == false")); 444009ea47eSEdward Tomasz Napierala 445009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 446009ea47eSEdward Tomasz Napierala if (is->is_login_pdu != NULL) { 447009ea47eSEdward Tomasz Napierala icl_pdu_free(is->is_login_pdu); 448009ea47eSEdward Tomasz Napierala is->is_login_pdu = NULL; 449009ea47eSEdward Tomasz Napierala } 450009ea47eSEdward Tomasz Napierala cv_signal(&is->is_login_cv); 451009ea47eSEdward Tomasz Napierala #endif 452009ea47eSEdward Tomasz Napierala 453f1f12e40SEdward Tomasz Napierala iscsi_session_cleanup(is, true); 454009ea47eSEdward Tomasz Napierala 455009ea47eSEdward Tomasz Napierala KASSERT(TAILQ_EMPTY(&is->is_outstanding), 456009ea47eSEdward Tomasz Napierala ("destroying session with active tasks")); 45716c158a5SEdward Tomasz Napierala KASSERT(STAILQ_EMPTY(&is->is_postponed), 458009ea47eSEdward Tomasz Napierala ("destroying session with postponed PDUs")); 459009ea47eSEdward Tomasz Napierala 460009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 461009ea47eSEdward Tomasz Napierala 462009ea47eSEdward Tomasz Napierala icl_conn_free(is->is_conn); 463009ea47eSEdward Tomasz Napierala mtx_destroy(&is->is_lock); 464009ea47eSEdward Tomasz Napierala cv_destroy(&is->is_maintenance_cv); 465009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 466009ea47eSEdward Tomasz Napierala cv_destroy(&is->is_login_cv); 467009ea47eSEdward Tomasz Napierala #endif 468481b36c6SSteven Hartland 469009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "terminated"); 470009ea47eSEdward Tomasz Napierala free(is, M_ISCSI); 471009ea47eSEdward Tomasz Napierala 472009ea47eSEdward Tomasz Napierala /* 473009ea47eSEdward Tomasz Napierala * The iscsi_unload() routine might be waiting. 474009ea47eSEdward Tomasz Napierala */ 475009ea47eSEdward Tomasz Napierala cv_signal(&sc->sc_cv); 476009ea47eSEdward Tomasz Napierala } 477009ea47eSEdward Tomasz Napierala 478009ea47eSEdward Tomasz Napierala static void 479009ea47eSEdward Tomasz Napierala iscsi_maintenance_thread(void *arg) 480009ea47eSEdward Tomasz Napierala { 4815b338bc0SAlexander Motin struct iscsi_session *is = arg; 482009ea47eSEdward Tomasz Napierala 483009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 4845b338bc0SAlexander Motin for (;;) { 485009ea47eSEdward Tomasz Napierala if (is->is_reconnecting == false && 486009ea47eSEdward Tomasz Napierala is->is_terminating == false && 4875b338bc0SAlexander Motin (STAILQ_EMPTY(&is->is_postponed) || 4885b338bc0SAlexander Motin ISCSI_SNGT(is->is_cmdsn, is->is_maxcmdsn))) 489009ea47eSEdward Tomasz Napierala cv_wait(&is->is_maintenance_cv, &is->is_lock); 490009ea47eSEdward Tomasz Napierala 491481b36c6SSteven Hartland /* Terminate supersedes reconnect. */ 492009ea47eSEdward Tomasz Napierala if (is->is_terminating) { 493009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 494009ea47eSEdward Tomasz Napierala iscsi_maintenance_thread_terminate(is); 495009ea47eSEdward Tomasz Napierala kthread_exit(); 496009ea47eSEdward Tomasz Napierala return; 497009ea47eSEdward Tomasz Napierala } 498009ea47eSEdward Tomasz Napierala 499481b36c6SSteven Hartland if (is->is_reconnecting) { 500481b36c6SSteven Hartland ISCSI_SESSION_UNLOCK(is); 501481b36c6SSteven Hartland iscsi_maintenance_thread_reconnect(is); 5025b338bc0SAlexander Motin ISCSI_SESSION_LOCK(is); 503481b36c6SSteven Hartland continue; 504481b36c6SSteven Hartland } 505481b36c6SSteven Hartland 506009ea47eSEdward Tomasz Napierala iscsi_session_send_postponed(is); 507009ea47eSEdward Tomasz Napierala } 5085b338bc0SAlexander Motin ISCSI_SESSION_UNLOCK(is); 509009ea47eSEdward Tomasz Napierala } 510009ea47eSEdward Tomasz Napierala 511009ea47eSEdward Tomasz Napierala static void 512009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(struct iscsi_session *is) 513009ea47eSEdward Tomasz Napierala { 514009ea47eSEdward Tomasz Napierala 515009ea47eSEdward Tomasz Napierala /* 516009ea47eSEdward Tomasz Napierala * XXX: We can't use locking here, because 517009ea47eSEdward Tomasz Napierala * it's being called from various contexts. 518009ea47eSEdward Tomasz Napierala * Hope it doesn't break anything. 519009ea47eSEdward Tomasz Napierala */ 520009ea47eSEdward Tomasz Napierala if (is->is_reconnecting) 521009ea47eSEdward Tomasz Napierala return; 522009ea47eSEdward Tomasz Napierala 523009ea47eSEdward Tomasz Napierala is->is_reconnecting = true; 524009ea47eSEdward Tomasz Napierala cv_signal(&is->is_maintenance_cv); 525009ea47eSEdward Tomasz Napierala } 526009ea47eSEdward Tomasz Napierala 527009ea47eSEdward Tomasz Napierala static void 528009ea47eSEdward Tomasz Napierala iscsi_session_terminate(struct iscsi_session *is) 529009ea47eSEdward Tomasz Napierala { 530674074daSEdward Tomasz Napierala 531009ea47eSEdward Tomasz Napierala if (is->is_terminating) 532009ea47eSEdward Tomasz Napierala return; 533009ea47eSEdward Tomasz Napierala 534009ea47eSEdward Tomasz Napierala is->is_terminating = true; 535009ea47eSEdward Tomasz Napierala 536009ea47eSEdward Tomasz Napierala #if 0 537009ea47eSEdward Tomasz Napierala iscsi_session_logout(is); 538009ea47eSEdward Tomasz Napierala #endif 539009ea47eSEdward Tomasz Napierala cv_signal(&is->is_maintenance_cv); 540009ea47eSEdward Tomasz Napierala } 541009ea47eSEdward Tomasz Napierala 542009ea47eSEdward Tomasz Napierala static void 543009ea47eSEdward Tomasz Napierala iscsi_callout(void *context) 544009ea47eSEdward Tomasz Napierala { 545009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 546009ea47eSEdward Tomasz Napierala struct iscsi_bhs_nop_out *bhsno; 547009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 548009ea47eSEdward Tomasz Napierala bool reconnect_needed = false; 549009ea47eSEdward Tomasz Napierala 550009ea47eSEdward Tomasz Napierala is = context; 551009ea47eSEdward Tomasz Napierala 552674074daSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 553674074daSEdward Tomasz Napierala if (is->is_terminating) { 554674074daSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 555009ea47eSEdward Tomasz Napierala return; 556674074daSEdward Tomasz Napierala } 557009ea47eSEdward Tomasz Napierala 558009ea47eSEdward Tomasz Napierala callout_schedule(&is->is_callout, 1 * hz); 559009ea47eSEdward Tomasz Napierala 560ba165a31SEdward Tomasz Napierala if (is->is_conf.isc_enable == 0) 561ba165a31SEdward Tomasz Napierala goto out; 562ba165a31SEdward Tomasz Napierala 563009ea47eSEdward Tomasz Napierala is->is_timeout++; 564009ea47eSEdward Tomasz Napierala 565009ea47eSEdward Tomasz Napierala if (is->is_waiting_for_iscsid) { 5662c5b89e5SEdward Tomasz Napierala if (iscsid_timeout > 0 && is->is_timeout > iscsid_timeout) { 567009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "timed out waiting for iscsid(8) " 568009ea47eSEdward Tomasz Napierala "for %d seconds; reconnecting", 569009ea47eSEdward Tomasz Napierala is->is_timeout); 570009ea47eSEdward Tomasz Napierala reconnect_needed = true; 571009ea47eSEdward Tomasz Napierala } 572009ea47eSEdward Tomasz Napierala goto out; 573009ea47eSEdward Tomasz Napierala } 574009ea47eSEdward Tomasz Napierala 575009ea47eSEdward Tomasz Napierala if (is->is_login_phase) { 5762c5b89e5SEdward Tomasz Napierala if (login_timeout > 0 && is->is_timeout > login_timeout) { 577009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "login timed out after %d seconds; " 578009ea47eSEdward Tomasz Napierala "reconnecting", is->is_timeout); 579009ea47eSEdward Tomasz Napierala reconnect_needed = true; 580009ea47eSEdward Tomasz Napierala } 581009ea47eSEdward Tomasz Napierala goto out; 582009ea47eSEdward Tomasz Napierala } 583009ea47eSEdward Tomasz Napierala 5842c5b89e5SEdward Tomasz Napierala if (ping_timeout <= 0) { 5852c5b89e5SEdward Tomasz Napierala /* 5862c5b89e5SEdward Tomasz Napierala * Pings are disabled. Don't send NOP-Out in this case. 5872c5b89e5SEdward Tomasz Napierala * Reset the timeout, to avoid triggering reconnection, 5882c5b89e5SEdward Tomasz Napierala * should the user decide to reenable them. 5892c5b89e5SEdward Tomasz Napierala */ 5902c5b89e5SEdward Tomasz Napierala is->is_timeout = 0; 5912c5b89e5SEdward Tomasz Napierala goto out; 5922c5b89e5SEdward Tomasz Napierala } 5932c5b89e5SEdward Tomasz Napierala 594009ea47eSEdward Tomasz Napierala if (is->is_timeout >= ping_timeout) { 595009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "no ping reply (NOP-In) after %d seconds; " 596009ea47eSEdward Tomasz Napierala "reconnecting", ping_timeout); 597009ea47eSEdward Tomasz Napierala reconnect_needed = true; 598009ea47eSEdward Tomasz Napierala goto out; 599009ea47eSEdward Tomasz Napierala } 600009ea47eSEdward Tomasz Napierala 601009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 602009ea47eSEdward Tomasz Napierala 603009ea47eSEdward Tomasz Napierala /* 604009ea47eSEdward Tomasz Napierala * If the ping was reset less than one second ago - which means 605009ea47eSEdward Tomasz Napierala * that we've received some PDU during the last second - assume 606009ea47eSEdward Tomasz Napierala * the traffic flows correctly and don't bother sending a NOP-Out. 607009ea47eSEdward Tomasz Napierala * 608009ea47eSEdward Tomasz Napierala * (It's 2 - one for one second, and one for incrementing is_timeout 609009ea47eSEdward Tomasz Napierala * earlier in this routine.) 610009ea47eSEdward Tomasz Napierala */ 611009ea47eSEdward Tomasz Napierala if (is->is_timeout < 2) 612009ea47eSEdward Tomasz Napierala return; 613009ea47eSEdward Tomasz Napierala 614d2d52b00SEdward Tomasz Napierala request = icl_pdu_new(is->is_conn, M_NOWAIT); 61546aaea89SEdward Tomasz Napierala if (request == NULL) { 61646aaea89SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate PDU"); 61746aaea89SEdward Tomasz Napierala return; 61846aaea89SEdward Tomasz Napierala } 619009ea47eSEdward Tomasz Napierala bhsno = (struct iscsi_bhs_nop_out *)request->ip_bhs; 620009ea47eSEdward Tomasz Napierala bhsno->bhsno_opcode = ISCSI_BHS_OPCODE_NOP_OUT | 621009ea47eSEdward Tomasz Napierala ISCSI_BHS_OPCODE_IMMEDIATE; 622009ea47eSEdward Tomasz Napierala bhsno->bhsno_flags = 0x80; 623009ea47eSEdward Tomasz Napierala bhsno->bhsno_target_transfer_tag = 0xffffffff; 624009ea47eSEdward Tomasz Napierala iscsi_pdu_queue(request); 625009ea47eSEdward Tomasz Napierala return; 626009ea47eSEdward Tomasz Napierala 627009ea47eSEdward Tomasz Napierala out: 628481b36c6SSteven Hartland if (is->is_terminating) { 629481b36c6SSteven Hartland ISCSI_SESSION_UNLOCK(is); 630481b36c6SSteven Hartland return; 631481b36c6SSteven Hartland } 632481b36c6SSteven Hartland 633009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 634009ea47eSEdward Tomasz Napierala 635009ea47eSEdward Tomasz Napierala if (reconnect_needed) 636009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 637009ea47eSEdward Tomasz Napierala } 638009ea47eSEdward Tomasz Napierala 639009ea47eSEdward Tomasz Napierala static void 640009ea47eSEdward Tomasz Napierala iscsi_pdu_update_statsn(const struct icl_pdu *response) 641009ea47eSEdward Tomasz Napierala { 642009ea47eSEdward Tomasz Napierala const struct iscsi_bhs_data_in *bhsdi; 643009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 6442124e3b0SAlexander Motin uint32_t expcmdsn, maxcmdsn, statsn; 645009ea47eSEdward Tomasz Napierala 646009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 647009ea47eSEdward Tomasz Napierala 648009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 649009ea47eSEdward Tomasz Napierala 650009ea47eSEdward Tomasz Napierala /* 651009ea47eSEdward Tomasz Napierala * We're only using fields common for all the response 652009ea47eSEdward Tomasz Napierala * (target -> initiator) PDUs. 653009ea47eSEdward Tomasz Napierala */ 654009ea47eSEdward Tomasz Napierala bhsdi = (const struct iscsi_bhs_data_in *)response->ip_bhs; 655009ea47eSEdward Tomasz Napierala /* 656009ea47eSEdward Tomasz Napierala * Ok, I lied. In case of Data-In, "The fields StatSN, Status, 657009ea47eSEdward Tomasz Napierala * and Residual Count only have meaningful content if the S bit 658009ea47eSEdward Tomasz Napierala * is set to 1", so we also need to check the bit specific for 659009ea47eSEdward Tomasz Napierala * Data-In PDU. 660009ea47eSEdward Tomasz Napierala */ 661009ea47eSEdward Tomasz Napierala if (bhsdi->bhsdi_opcode != ISCSI_BHS_OPCODE_SCSI_DATA_IN || 662009ea47eSEdward Tomasz Napierala (bhsdi->bhsdi_flags & BHSDI_FLAGS_S) != 0) { 6632124e3b0SAlexander Motin statsn = ntohl(bhsdi->bhsdi_statsn); 6642124e3b0SAlexander Motin if (statsn != is->is_statsn && statsn != (is->is_statsn + 1)) { 6652124e3b0SAlexander Motin /* XXX: This is normal situation for MCS */ 6662124e3b0SAlexander Motin ISCSI_SESSION_WARN(is, "PDU 0x%x StatSN %u != " 6672124e3b0SAlexander Motin "session ExpStatSN %u (or + 1); reconnecting", 6682124e3b0SAlexander Motin bhsdi->bhsdi_opcode, statsn, is->is_statsn); 6692124e3b0SAlexander Motin iscsi_session_reconnect(is); 670009ea47eSEdward Tomasz Napierala } 6712124e3b0SAlexander Motin if (ISCSI_SNGT(statsn, is->is_statsn)) 6722124e3b0SAlexander Motin is->is_statsn = statsn; 673009ea47eSEdward Tomasz Napierala } 674009ea47eSEdward Tomasz Napierala 675009ea47eSEdward Tomasz Napierala expcmdsn = ntohl(bhsdi->bhsdi_expcmdsn); 676009ea47eSEdward Tomasz Napierala maxcmdsn = ntohl(bhsdi->bhsdi_maxcmdsn); 677009ea47eSEdward Tomasz Napierala 6782124e3b0SAlexander Motin if (ISCSI_SNLT(maxcmdsn + 1, expcmdsn)) { 6792124e3b0SAlexander Motin ISCSI_SESSION_DEBUG(is, 6802124e3b0SAlexander Motin "PDU MaxCmdSN %u + 1 < PDU ExpCmdSN %u; ignoring", 681009ea47eSEdward Tomasz Napierala maxcmdsn, expcmdsn); 682009ea47eSEdward Tomasz Napierala } else { 6832124e3b0SAlexander Motin if (ISCSI_SNGT(maxcmdsn, is->is_maxcmdsn)) { 684009ea47eSEdward Tomasz Napierala is->is_maxcmdsn = maxcmdsn; 685009ea47eSEdward Tomasz Napierala 686009ea47eSEdward Tomasz Napierala /* 687009ea47eSEdward Tomasz Napierala * Command window increased; kick the maintanance thread 688009ea47eSEdward Tomasz Napierala * to send out postponed commands. 689009ea47eSEdward Tomasz Napierala */ 69016c158a5SEdward Tomasz Napierala if (!STAILQ_EMPTY(&is->is_postponed)) 691009ea47eSEdward Tomasz Napierala cv_signal(&is->is_maintenance_cv); 6922124e3b0SAlexander Motin } else if (ISCSI_SNLT(maxcmdsn, is->is_maxcmdsn)) { 6932124e3b0SAlexander Motin /* XXX: This is normal situation for MCS */ 6942124e3b0SAlexander Motin ISCSI_SESSION_DEBUG(is, 6952124e3b0SAlexander Motin "PDU MaxCmdSN %u < session MaxCmdSN %u; ignoring", 696009ea47eSEdward Tomasz Napierala maxcmdsn, is->is_maxcmdsn); 697009ea47eSEdward Tomasz Napierala } 698009ea47eSEdward Tomasz Napierala 6992124e3b0SAlexander Motin if (ISCSI_SNGT(expcmdsn, is->is_expcmdsn)) { 700009ea47eSEdward Tomasz Napierala is->is_expcmdsn = expcmdsn; 7012124e3b0SAlexander Motin } else if (ISCSI_SNLT(expcmdsn, is->is_expcmdsn)) { 7022124e3b0SAlexander Motin /* XXX: This is normal situation for MCS */ 7032124e3b0SAlexander Motin ISCSI_SESSION_DEBUG(is, 7042124e3b0SAlexander Motin "PDU ExpCmdSN %u < session ExpCmdSN %u; ignoring", 705009ea47eSEdward Tomasz Napierala expcmdsn, is->is_expcmdsn); 706009ea47eSEdward Tomasz Napierala } 707009ea47eSEdward Tomasz Napierala } 708009ea47eSEdward Tomasz Napierala 709009ea47eSEdward Tomasz Napierala /* 710009ea47eSEdward Tomasz Napierala * Every incoming PDU - not just NOP-In - resets the ping timer. 711009ea47eSEdward Tomasz Napierala * The purpose of the timeout is to reset the connection when it stalls; 712009ea47eSEdward Tomasz Napierala * we don't want this to happen when NOP-In or NOP-Out ends up delayed 713009ea47eSEdward Tomasz Napierala * in some queue. 714009ea47eSEdward Tomasz Napierala */ 715009ea47eSEdward Tomasz Napierala is->is_timeout = 0; 716009ea47eSEdward Tomasz Napierala } 717009ea47eSEdward Tomasz Napierala 718009ea47eSEdward Tomasz Napierala static void 719009ea47eSEdward Tomasz Napierala iscsi_receive_callback(struct icl_pdu *response) 720009ea47eSEdward Tomasz Napierala { 721009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 722009ea47eSEdward Tomasz Napierala 723009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 724009ea47eSEdward Tomasz Napierala 725009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 726009ea47eSEdward Tomasz Napierala 727d66a906bSEdward Tomasz Napierala iscsi_pdu_update_statsn(response); 728d66a906bSEdward Tomasz Napierala 729009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 730009ea47eSEdward Tomasz Napierala if (is->is_login_phase) { 731009ea47eSEdward Tomasz Napierala if (is->is_login_pdu == NULL) 732009ea47eSEdward Tomasz Napierala is->is_login_pdu = response; 733009ea47eSEdward Tomasz Napierala else 734009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 735009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 736009ea47eSEdward Tomasz Napierala cv_signal(&is->is_login_cv); 737009ea47eSEdward Tomasz Napierala return; 738009ea47eSEdward Tomasz Napierala } 739009ea47eSEdward Tomasz Napierala #endif 740009ea47eSEdward Tomasz Napierala 741009ea47eSEdward Tomasz Napierala /* 742009ea47eSEdward Tomasz Napierala * The handling routine is responsible for freeing the PDU 743009ea47eSEdward Tomasz Napierala * when it's no longer needed. 744009ea47eSEdward Tomasz Napierala */ 745009ea47eSEdward Tomasz Napierala switch (response->ip_bhs->bhs_opcode) { 746009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_NOP_IN: 747009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_nop_in(response); 748c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 749009ea47eSEdward Tomasz Napierala break; 750009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_SCSI_RESPONSE: 751009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_scsi_response(response); 752c215ad3aSAlexander Motin /* Session lock dropped inside. */ 753c215ad3aSAlexander Motin ISCSI_SESSION_LOCK_ASSERT_NOT(is); 754009ea47eSEdward Tomasz Napierala break; 755aa75114cSAlexander Motin case ISCSI_BHS_OPCODE_TASK_RESPONSE: 756aa75114cSAlexander Motin iscsi_pdu_handle_task_response(response); 757c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 758aa75114cSAlexander Motin break; 759009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_SCSI_DATA_IN: 760009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_data_in(response); 761c215ad3aSAlexander Motin /* Session lock dropped inside. */ 762c215ad3aSAlexander Motin ISCSI_SESSION_LOCK_ASSERT_NOT(is); 763009ea47eSEdward Tomasz Napierala break; 764009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_LOGOUT_RESPONSE: 765009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_logout_response(response); 766c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 767009ea47eSEdward Tomasz Napierala break; 768009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_R2T: 769009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_r2t(response); 770c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 771009ea47eSEdward Tomasz Napierala break; 772009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_ASYNC_MESSAGE: 773009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_async_message(response); 774c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 775009ea47eSEdward Tomasz Napierala break; 776009ea47eSEdward Tomasz Napierala case ISCSI_BHS_OPCODE_REJECT: 777009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_reject(response); 778c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 779009ea47eSEdward Tomasz Napierala break; 780009ea47eSEdward Tomasz Napierala default: 781009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "received PDU with unsupported " 782009ea47eSEdward Tomasz Napierala "opcode 0x%x; reconnecting", 783009ea47eSEdward Tomasz Napierala response->ip_bhs->bhs_opcode); 784009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 785c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 786009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 787009ea47eSEdward Tomasz Napierala } 788009ea47eSEdward Tomasz Napierala } 789009ea47eSEdward Tomasz Napierala 790009ea47eSEdward Tomasz Napierala static void 791009ea47eSEdward Tomasz Napierala iscsi_error_callback(struct icl_conn *ic) 792009ea47eSEdward Tomasz Napierala { 793009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 794009ea47eSEdward Tomasz Napierala 795009ea47eSEdward Tomasz Napierala is = CONN_SESSION(ic); 796009ea47eSEdward Tomasz Napierala 797009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "connection error; reconnecting"); 798009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 799009ea47eSEdward Tomasz Napierala } 800009ea47eSEdward Tomasz Napierala 801009ea47eSEdward Tomasz Napierala static void 802009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_nop_in(struct icl_pdu *response) 803009ea47eSEdward Tomasz Napierala { 8041008ac5eSEdward Tomasz Napierala struct iscsi_session *is; 805009ea47eSEdward Tomasz Napierala struct iscsi_bhs_nop_out *bhsno; 806009ea47eSEdward Tomasz Napierala struct iscsi_bhs_nop_in *bhsni; 807009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 8081008ac5eSEdward Tomasz Napierala void *data = NULL; 8091008ac5eSEdward Tomasz Napierala size_t datasize; 8101008ac5eSEdward Tomasz Napierala int error; 811009ea47eSEdward Tomasz Napierala 8121008ac5eSEdward Tomasz Napierala is = PDU_SESSION(response); 813009ea47eSEdward Tomasz Napierala bhsni = (struct iscsi_bhs_nop_in *)response->ip_bhs; 814009ea47eSEdward Tomasz Napierala 815009ea47eSEdward Tomasz Napierala if (bhsni->bhsni_target_transfer_tag == 0xffffffff) { 816009ea47eSEdward Tomasz Napierala /* 817009ea47eSEdward Tomasz Napierala * Nothing to do; iscsi_pdu_update_statsn() already 818009ea47eSEdward Tomasz Napierala * zeroed the timeout. 819009ea47eSEdward Tomasz Napierala */ 820009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 821009ea47eSEdward Tomasz Napierala return; 822009ea47eSEdward Tomasz Napierala } 823009ea47eSEdward Tomasz Napierala 8241008ac5eSEdward Tomasz Napierala datasize = icl_pdu_data_segment_length(response); 8251008ac5eSEdward Tomasz Napierala if (datasize > 0) { 8261008ac5eSEdward Tomasz Napierala data = malloc(datasize, M_ISCSI, M_NOWAIT | M_ZERO); 8271008ac5eSEdward Tomasz Napierala if (data == NULL) { 8281008ac5eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate memory; " 8291008ac5eSEdward Tomasz Napierala "reconnecting"); 8301008ac5eSEdward Tomasz Napierala icl_pdu_free(response); 8311008ac5eSEdward Tomasz Napierala iscsi_session_reconnect(is); 8321008ac5eSEdward Tomasz Napierala return; 8331008ac5eSEdward Tomasz Napierala } 8341008ac5eSEdward Tomasz Napierala icl_pdu_get_data(response, 0, data, datasize); 8351008ac5eSEdward Tomasz Napierala } 8361008ac5eSEdward Tomasz Napierala 837d2d52b00SEdward Tomasz Napierala request = icl_pdu_new(response->ip_conn, M_NOWAIT); 838009ea47eSEdward Tomasz Napierala if (request == NULL) { 8391008ac5eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate memory; " 8401008ac5eSEdward Tomasz Napierala "reconnecting"); 8411008ac5eSEdward Tomasz Napierala free(data, M_ISCSI); 842009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 8431008ac5eSEdward Tomasz Napierala iscsi_session_reconnect(is); 844009ea47eSEdward Tomasz Napierala return; 845009ea47eSEdward Tomasz Napierala } 846009ea47eSEdward Tomasz Napierala bhsno = (struct iscsi_bhs_nop_out *)request->ip_bhs; 847009ea47eSEdward Tomasz Napierala bhsno->bhsno_opcode = ISCSI_BHS_OPCODE_NOP_OUT | 848009ea47eSEdward Tomasz Napierala ISCSI_BHS_OPCODE_IMMEDIATE; 849009ea47eSEdward Tomasz Napierala bhsno->bhsno_flags = 0x80; 8501008ac5eSEdward Tomasz Napierala bhsno->bhsno_initiator_task_tag = 0xffffffff; 851009ea47eSEdward Tomasz Napierala bhsno->bhsno_target_transfer_tag = bhsni->bhsni_target_transfer_tag; 8521008ac5eSEdward Tomasz Napierala if (datasize > 0) { 8531008ac5eSEdward Tomasz Napierala error = icl_pdu_append_data(request, data, datasize, M_NOWAIT); 8541008ac5eSEdward Tomasz Napierala if (error != 0) { 8551008ac5eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate memory; " 8561008ac5eSEdward Tomasz Napierala "reconnecting"); 8571008ac5eSEdward Tomasz Napierala free(data, M_ISCSI); 8581008ac5eSEdward Tomasz Napierala icl_pdu_free(request); 8591008ac5eSEdward Tomasz Napierala icl_pdu_free(response); 8601008ac5eSEdward Tomasz Napierala iscsi_session_reconnect(is); 8611008ac5eSEdward Tomasz Napierala return; 8621008ac5eSEdward Tomasz Napierala } 8631008ac5eSEdward Tomasz Napierala free(data, M_ISCSI); 8641008ac5eSEdward Tomasz Napierala } 865009ea47eSEdward Tomasz Napierala 866009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 867009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(request); 868009ea47eSEdward Tomasz Napierala } 869009ea47eSEdward Tomasz Napierala 870009ea47eSEdward Tomasz Napierala static void 871009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_scsi_response(struct icl_pdu *response) 872009ea47eSEdward Tomasz Napierala { 873009ea47eSEdward Tomasz Napierala struct iscsi_bhs_scsi_response *bhssr; 874009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io; 875009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 87673e2e95dSAlexander Motin union ccb *ccb; 877009ea47eSEdward Tomasz Napierala struct ccb_scsiio *csio; 87873e2e95dSAlexander Motin size_t data_segment_len, received; 879009ea47eSEdward Tomasz Napierala uint16_t sense_len; 880bcec64bcSEdward Tomasz Napierala uint32_t resid; 881009ea47eSEdward Tomasz Napierala 882009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 883009ea47eSEdward Tomasz Napierala 884009ea47eSEdward Tomasz Napierala bhssr = (struct iscsi_bhs_scsi_response *)response->ip_bhs; 885009ea47eSEdward Tomasz Napierala io = iscsi_outstanding_find(is, bhssr->bhssr_initiator_task_tag); 886aa75114cSAlexander Motin if (io == NULL || io->io_ccb == NULL) { 887009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "bad itt 0x%x", bhssr->bhssr_initiator_task_tag); 888009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 889009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 890c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 891009ea47eSEdward Tomasz Napierala return; 892009ea47eSEdward Tomasz Napierala } 893009ea47eSEdward Tomasz Napierala 89473e2e95dSAlexander Motin ccb = io->io_ccb; 895bcec64bcSEdward Tomasz Napierala 896bcec64bcSEdward Tomasz Napierala /* 897bcec64bcSEdward Tomasz Napierala * With iSER, after getting good response we can be sure 898bcec64bcSEdward Tomasz Napierala * that all the data has been successfully transferred. 899bcec64bcSEdward Tomasz Napierala */ 900bcec64bcSEdward Tomasz Napierala if (is->is_conn->ic_iser) { 901bcec64bcSEdward Tomasz Napierala resid = ntohl(bhssr->bhssr_residual_count); 902bcec64bcSEdward Tomasz Napierala if (bhssr->bhssr_flags & BHSSR_FLAGS_RESIDUAL_UNDERFLOW) { 903bcec64bcSEdward Tomasz Napierala io->io_received = ccb->csio.dxfer_len - resid; 904bcec64bcSEdward Tomasz Napierala } else if (bhssr->bhssr_flags & BHSSR_FLAGS_RESIDUAL_OVERFLOW) { 905bcec64bcSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "overflow: target indicates %d", resid); 906bcec64bcSEdward Tomasz Napierala } else { 907bcec64bcSEdward Tomasz Napierala io->io_received = ccb->csio.dxfer_len; 908bcec64bcSEdward Tomasz Napierala } 909bcec64bcSEdward Tomasz Napierala } 910bcec64bcSEdward Tomasz Napierala 91173e2e95dSAlexander Motin received = io->io_received; 912c215ad3aSAlexander Motin iscsi_outstanding_remove(is, io); 913c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 914c215ad3aSAlexander Motin 915009ea47eSEdward Tomasz Napierala if (bhssr->bhssr_response != BHSSR_RESPONSE_COMMAND_COMPLETED) { 916009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "service response 0x%x", bhssr->bhssr_response); 91773e2e95dSAlexander Motin if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 91873e2e95dSAlexander Motin xpt_freeze_devq(ccb->ccb_h.path, 1); 919009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 920009ea47eSEdward Tomasz Napierala } 92173e2e95dSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP_ERR | CAM_DEV_QFRZN; 922009ea47eSEdward Tomasz Napierala } else if (bhssr->bhssr_status == 0) { 92373e2e95dSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP; 924009ea47eSEdward Tomasz Napierala } else { 92573e2e95dSAlexander Motin if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 92673e2e95dSAlexander Motin xpt_freeze_devq(ccb->ccb_h.path, 1); 927009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 928009ea47eSEdward Tomasz Napierala } 92973e2e95dSAlexander Motin ccb->ccb_h.status = CAM_SCSI_STATUS_ERROR | CAM_DEV_QFRZN; 93073e2e95dSAlexander Motin ccb->csio.scsi_status = bhssr->bhssr_status; 931009ea47eSEdward Tomasz Napierala } 932009ea47eSEdward Tomasz Napierala 93373e2e95dSAlexander Motin csio = &ccb->csio; 934009ea47eSEdward Tomasz Napierala data_segment_len = icl_pdu_data_segment_length(response); 935009ea47eSEdward Tomasz Napierala if (data_segment_len > 0) { 936009ea47eSEdward Tomasz Napierala if (data_segment_len < sizeof(sense_len)) { 937009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "truncated data segment (%zd bytes)", 938009ea47eSEdward Tomasz Napierala data_segment_len); 93973e2e95dSAlexander Motin if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 94073e2e95dSAlexander Motin xpt_freeze_devq(ccb->ccb_h.path, 1); 941009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 942009ea47eSEdward Tomasz Napierala } 94373e2e95dSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP_ERR | CAM_DEV_QFRZN; 944009ea47eSEdward Tomasz Napierala goto out; 945009ea47eSEdward Tomasz Napierala } 946009ea47eSEdward Tomasz Napierala icl_pdu_get_data(response, 0, &sense_len, sizeof(sense_len)); 947009ea47eSEdward Tomasz Napierala sense_len = ntohs(sense_len); 948009ea47eSEdward Tomasz Napierala #if 0 949009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "sense_len %d, data len %zd", 950009ea47eSEdward Tomasz Napierala sense_len, data_segment_len); 951009ea47eSEdward Tomasz Napierala #endif 952009ea47eSEdward Tomasz Napierala if (sizeof(sense_len) + sense_len > data_segment_len) { 953009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "truncated data segment " 954009ea47eSEdward Tomasz Napierala "(%zd bytes, should be %zd)", 955009ea47eSEdward Tomasz Napierala data_segment_len, sizeof(sense_len) + sense_len); 95673e2e95dSAlexander Motin if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 95773e2e95dSAlexander Motin xpt_freeze_devq(ccb->ccb_h.path, 1); 958009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 959009ea47eSEdward Tomasz Napierala } 96073e2e95dSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP_ERR | CAM_DEV_QFRZN; 961009ea47eSEdward Tomasz Napierala goto out; 962009ea47eSEdward Tomasz Napierala } else if (sizeof(sense_len) + sense_len < data_segment_len) 963009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "oversize data segment " 964009ea47eSEdward Tomasz Napierala "(%zd bytes, should be %zd)", 965009ea47eSEdward Tomasz Napierala data_segment_len, sizeof(sense_len) + sense_len); 966009ea47eSEdward Tomasz Napierala if (sense_len > csio->sense_len) { 967009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "truncating sense from %d to %d", 968009ea47eSEdward Tomasz Napierala sense_len, csio->sense_len); 969009ea47eSEdward Tomasz Napierala sense_len = csio->sense_len; 970009ea47eSEdward Tomasz Napierala } 971009ea47eSEdward Tomasz Napierala icl_pdu_get_data(response, sizeof(sense_len), &csio->sense_data, sense_len); 972009ea47eSEdward Tomasz Napierala csio->sense_resid = csio->sense_len - sense_len; 97373e2e95dSAlexander Motin ccb->ccb_h.status |= CAM_AUTOSNS_VALID; 974009ea47eSEdward Tomasz Napierala } 975009ea47eSEdward Tomasz Napierala 976009ea47eSEdward Tomasz Napierala out: 977009ea47eSEdward Tomasz Napierala if (bhssr->bhssr_flags & BHSSR_FLAGS_RESIDUAL_UNDERFLOW) 978009ea47eSEdward Tomasz Napierala csio->resid = ntohl(bhssr->bhssr_residual_count); 979009ea47eSEdward Tomasz Napierala 980009ea47eSEdward Tomasz Napierala if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) { 98173e2e95dSAlexander Motin KASSERT(received <= csio->dxfer_len, 98273e2e95dSAlexander Motin ("received > csio->dxfer_len")); 98373e2e95dSAlexander Motin if (received < csio->dxfer_len) { 98473e2e95dSAlexander Motin if (csio->resid != csio->dxfer_len - received) { 985009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "underflow mismatch: " 986009ea47eSEdward Tomasz Napierala "target indicates %d, we calculated %zd", 98773e2e95dSAlexander Motin csio->resid, csio->dxfer_len - received); 988009ea47eSEdward Tomasz Napierala } 98973e2e95dSAlexander Motin csio->resid = csio->dxfer_len - received; 990009ea47eSEdward Tomasz Napierala } 991009ea47eSEdward Tomasz Napierala } 992009ea47eSEdward Tomasz Napierala 99373e2e95dSAlexander Motin xpt_done(ccb); 994009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 995009ea47eSEdward Tomasz Napierala } 996009ea47eSEdward Tomasz Napierala 997009ea47eSEdward Tomasz Napierala static void 998aa75114cSAlexander Motin iscsi_pdu_handle_task_response(struct icl_pdu *response) 999aa75114cSAlexander Motin { 1000aa75114cSAlexander Motin struct iscsi_bhs_task_management_response *bhstmr; 1001aa75114cSAlexander Motin struct iscsi_outstanding *io, *aio; 1002aa75114cSAlexander Motin struct iscsi_session *is; 1003aa75114cSAlexander Motin 1004aa75114cSAlexander Motin is = PDU_SESSION(response); 1005aa75114cSAlexander Motin 1006aa75114cSAlexander Motin bhstmr = (struct iscsi_bhs_task_management_response *)response->ip_bhs; 1007aa75114cSAlexander Motin io = iscsi_outstanding_find(is, bhstmr->bhstmr_initiator_task_tag); 1008aa75114cSAlexander Motin if (io == NULL || io->io_ccb != NULL) { 1009aa75114cSAlexander Motin ISCSI_SESSION_WARN(is, "bad itt 0x%x", 1010aa75114cSAlexander Motin bhstmr->bhstmr_initiator_task_tag); 1011aa75114cSAlexander Motin icl_pdu_free(response); 1012aa75114cSAlexander Motin iscsi_session_reconnect(is); 1013aa75114cSAlexander Motin return; 1014aa75114cSAlexander Motin } 1015aa75114cSAlexander Motin 1016aa75114cSAlexander Motin if (bhstmr->bhstmr_response != BHSTMR_RESPONSE_FUNCTION_COMPLETE) { 1017aa75114cSAlexander Motin ISCSI_SESSION_WARN(is, "task response 0x%x", 1018aa75114cSAlexander Motin bhstmr->bhstmr_response); 1019aa75114cSAlexander Motin } else { 10203dd2a7a5SAlexander Motin aio = iscsi_outstanding_find(is, io->io_referenced_task_tag); 1021aa75114cSAlexander Motin if (aio != NULL && aio->io_ccb != NULL) 1022ad10496cSAndriy Gapon iscsi_session_terminate_task(is, aio, CAM_REQ_ABORTED); 1023aa75114cSAlexander Motin } 1024aa75114cSAlexander Motin 1025aa75114cSAlexander Motin iscsi_outstanding_remove(is, io); 1026aa75114cSAlexander Motin icl_pdu_free(response); 1027aa75114cSAlexander Motin } 1028aa75114cSAlexander Motin 1029aa75114cSAlexander Motin static void 1030009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_data_in(struct icl_pdu *response) 1031009ea47eSEdward Tomasz Napierala { 1032009ea47eSEdward Tomasz Napierala struct iscsi_bhs_data_in *bhsdi; 1033009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io; 1034009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 103573e2e95dSAlexander Motin union ccb *ccb; 1036009ea47eSEdward Tomasz Napierala struct ccb_scsiio *csio; 103773e2e95dSAlexander Motin size_t data_segment_len, received, oreceived; 1038009ea47eSEdward Tomasz Napierala 1039009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 1040009ea47eSEdward Tomasz Napierala bhsdi = (struct iscsi_bhs_data_in *)response->ip_bhs; 1041009ea47eSEdward Tomasz Napierala io = iscsi_outstanding_find(is, bhsdi->bhsdi_initiator_task_tag); 1042aa75114cSAlexander Motin if (io == NULL || io->io_ccb == NULL) { 1043009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "bad itt 0x%x", bhsdi->bhsdi_initiator_task_tag); 1044009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1045009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1046c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 1047009ea47eSEdward Tomasz Napierala return; 1048009ea47eSEdward Tomasz Napierala } 1049009ea47eSEdward Tomasz Napierala 1050009ea47eSEdward Tomasz Napierala data_segment_len = icl_pdu_data_segment_length(response); 1051009ea47eSEdward Tomasz Napierala if (data_segment_len == 0) { 1052009ea47eSEdward Tomasz Napierala /* 1053009ea47eSEdward Tomasz Napierala * "The sending of 0 length data segments should be avoided, 1054009ea47eSEdward Tomasz Napierala * but initiators and targets MUST be able to properly receive 1055009ea47eSEdward Tomasz Napierala * 0 length data segments." 1056009ea47eSEdward Tomasz Napierala */ 1057c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 1058009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1059009ea47eSEdward Tomasz Napierala return; 1060009ea47eSEdward Tomasz Napierala } 1061009ea47eSEdward Tomasz Napierala 1062009ea47eSEdward Tomasz Napierala /* 1063009ea47eSEdward Tomasz Napierala * We need to track this for security reasons - without it, malicious target 1064009ea47eSEdward Tomasz Napierala * could respond to SCSI READ without sending Data-In PDUs, which would result 1065009ea47eSEdward Tomasz Napierala * in read operation on the initiator side returning random kernel data. 1066009ea47eSEdward Tomasz Napierala */ 1067009ea47eSEdward Tomasz Napierala if (ntohl(bhsdi->bhsdi_buffer_offset) != io->io_received) { 1068009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "data out of order; expected offset %zd, got %zd", 1069009ea47eSEdward Tomasz Napierala io->io_received, (size_t)ntohl(bhsdi->bhsdi_buffer_offset)); 1070009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1071009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1072c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 1073009ea47eSEdward Tomasz Napierala return; 1074009ea47eSEdward Tomasz Napierala } 1075009ea47eSEdward Tomasz Napierala 107673e2e95dSAlexander Motin ccb = io->io_ccb; 107773e2e95dSAlexander Motin csio = &ccb->csio; 1078009ea47eSEdward Tomasz Napierala 1079d43c9ec1SEdward Tomasz Napierala if (io->io_received + data_segment_len > csio->dxfer_len) { 1080009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "oversize data segment (%zd bytes " 1081d43c9ec1SEdward Tomasz Napierala "at offset %zd, buffer is %d)", 1082d43c9ec1SEdward Tomasz Napierala data_segment_len, io->io_received, csio->dxfer_len); 1083009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1084009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1085c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 1086009ea47eSEdward Tomasz Napierala return; 1087009ea47eSEdward Tomasz Napierala } 1088009ea47eSEdward Tomasz Napierala 108973e2e95dSAlexander Motin oreceived = io->io_received; 1090009ea47eSEdward Tomasz Napierala io->io_received += data_segment_len; 109173e2e95dSAlexander Motin received = io->io_received; 1092c215ad3aSAlexander Motin if ((bhsdi->bhsdi_flags & BHSDI_FLAGS_S) != 0) 1093c215ad3aSAlexander Motin iscsi_outstanding_remove(is, io); 1094c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 1095c215ad3aSAlexander Motin 109673e2e95dSAlexander Motin icl_pdu_get_data(response, 0, csio->data_ptr + oreceived, data_segment_len); 1097009ea47eSEdward Tomasz Napierala 1098009ea47eSEdward Tomasz Napierala /* 1099009ea47eSEdward Tomasz Napierala * XXX: Check DataSN. 1100009ea47eSEdward Tomasz Napierala * XXX: Check F. 1101009ea47eSEdward Tomasz Napierala */ 110269647b7bSEdward Tomasz Napierala if ((bhsdi->bhsdi_flags & BHSDI_FLAGS_S) == 0) { 110369647b7bSEdward Tomasz Napierala /* 110469647b7bSEdward Tomasz Napierala * Nothing more to do. 110569647b7bSEdward Tomasz Napierala */ 110669647b7bSEdward Tomasz Napierala icl_pdu_free(response); 110769647b7bSEdward Tomasz Napierala return; 110869647b7bSEdward Tomasz Napierala } 110969647b7bSEdward Tomasz Napierala 1110009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "got S flag; status 0x%x", bhsdi->bhsdi_status); 1111009ea47eSEdward Tomasz Napierala if (bhsdi->bhsdi_status == 0) { 111273e2e95dSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP; 1113009ea47eSEdward Tomasz Napierala } else { 111473e2e95dSAlexander Motin if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 111573e2e95dSAlexander Motin xpt_freeze_devq(ccb->ccb_h.path, 1); 1116009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 1117009ea47eSEdward Tomasz Napierala } 111873e2e95dSAlexander Motin ccb->ccb_h.status = CAM_SCSI_STATUS_ERROR | CAM_DEV_QFRZN; 1119009ea47eSEdward Tomasz Napierala csio->scsi_status = bhsdi->bhsdi_status; 1120009ea47eSEdward Tomasz Napierala } 112169647b7bSEdward Tomasz Napierala 112269647b7bSEdward Tomasz Napierala if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) { 112373e2e95dSAlexander Motin KASSERT(received <= csio->dxfer_len, 112473e2e95dSAlexander Motin ("received > csio->dxfer_len")); 112573e2e95dSAlexander Motin if (received < csio->dxfer_len) { 112669647b7bSEdward Tomasz Napierala csio->resid = ntohl(bhsdi->bhsdi_residual_count); 112773e2e95dSAlexander Motin if (csio->resid != csio->dxfer_len - received) { 112869647b7bSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "underflow mismatch: " 112969647b7bSEdward Tomasz Napierala "target indicates %d, we calculated %zd", 113073e2e95dSAlexander Motin csio->resid, csio->dxfer_len - received); 113169647b7bSEdward Tomasz Napierala } 113273e2e95dSAlexander Motin csio->resid = csio->dxfer_len - received; 113369647b7bSEdward Tomasz Napierala } 1134009ea47eSEdward Tomasz Napierala } 1135009ea47eSEdward Tomasz Napierala 113673e2e95dSAlexander Motin xpt_done(ccb); 1137009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1138009ea47eSEdward Tomasz Napierala } 1139009ea47eSEdward Tomasz Napierala 1140009ea47eSEdward Tomasz Napierala static void 1141009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_logout_response(struct icl_pdu *response) 1142009ea47eSEdward Tomasz Napierala { 1143009ea47eSEdward Tomasz Napierala 1144009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(PDU_SESSION(response), "logout response"); 1145009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1146009ea47eSEdward Tomasz Napierala } 1147009ea47eSEdward Tomasz Napierala 1148009ea47eSEdward Tomasz Napierala static void 1149009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_r2t(struct icl_pdu *response) 1150009ea47eSEdward Tomasz Napierala { 1151009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 1152009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1153009ea47eSEdward Tomasz Napierala struct iscsi_bhs_r2t *bhsr2t; 1154009ea47eSEdward Tomasz Napierala struct iscsi_bhs_data_out *bhsdo; 1155009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io; 1156009ea47eSEdward Tomasz Napierala struct ccb_scsiio *csio; 1157009ea47eSEdward Tomasz Napierala size_t off, len, total_len; 1158009ea47eSEdward Tomasz Napierala int error; 11593dd2a7a5SAlexander Motin uint32_t datasn = 0; 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 off = ntohl(bhsr2t->bhsr2t_buffer_offset); 1187d43c9ec1SEdward Tomasz Napierala if (off > csio->dxfer_len) { 1188d43c9ec1SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target requested invalid offset " 1189d43c9ec1SEdward Tomasz Napierala "%zd, buffer is is %d; reconnecting", off, csio->dxfer_len); 1190d43c9ec1SEdward Tomasz Napierala icl_pdu_free(response); 1191d43c9ec1SEdward Tomasz Napierala iscsi_session_reconnect(is); 1192d43c9ec1SEdward Tomasz Napierala return; 1193d43c9ec1SEdward Tomasz Napierala } 1194d43c9ec1SEdward Tomasz Napierala 1195009ea47eSEdward Tomasz Napierala total_len = ntohl(bhsr2t->bhsr2t_desired_data_transfer_length); 1196d43c9ec1SEdward Tomasz Napierala if (total_len == 0 || total_len > csio->dxfer_len) { 1197d43c9ec1SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target requested invalid length " 1198d43c9ec1SEdward Tomasz Napierala "%zd, buffer is %d; reconnecting", total_len, csio->dxfer_len); 1199d43c9ec1SEdward Tomasz Napierala icl_pdu_free(response); 1200d43c9ec1SEdward Tomasz Napierala iscsi_session_reconnect(is); 1201d43c9ec1SEdward Tomasz Napierala return; 1202d43c9ec1SEdward Tomasz Napierala } 1203009ea47eSEdward Tomasz Napierala 1204009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "r2t; off %zd, len %zd", off, total_len); 1205009ea47eSEdward Tomasz Napierala 1206009ea47eSEdward Tomasz Napierala for (;;) { 1207009ea47eSEdward Tomasz Napierala len = total_len; 1208009ea47eSEdward Tomasz Napierala 1209*0cc7d64aSJohn Baldwin if (len > is->is_conn->ic_max_send_data_segment_length) 1210*0cc7d64aSJohn Baldwin len = is->is_conn->ic_max_send_data_segment_length; 1211009ea47eSEdward Tomasz Napierala 1212009ea47eSEdward Tomasz Napierala if (off + len > csio->dxfer_len) { 1213d43c9ec1SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target requested invalid " 1214d43c9ec1SEdward Tomasz Napierala "length/offset %zd, buffer is %d; reconnecting", 1215009ea47eSEdward Tomasz Napierala off + len, csio->dxfer_len); 1216009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1217009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1218009ea47eSEdward Tomasz Napierala return; 1219009ea47eSEdward Tomasz Napierala } 1220009ea47eSEdward Tomasz Napierala 1221d2d52b00SEdward Tomasz Napierala request = icl_pdu_new(response->ip_conn, M_NOWAIT); 1222009ea47eSEdward Tomasz Napierala if (request == NULL) { 1223009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1224009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1225009ea47eSEdward Tomasz Napierala return; 1226009ea47eSEdward Tomasz Napierala } 1227009ea47eSEdward Tomasz Napierala 1228009ea47eSEdward Tomasz Napierala bhsdo = (struct iscsi_bhs_data_out *)request->ip_bhs; 1229009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_opcode = ISCSI_BHS_OPCODE_SCSI_DATA_OUT; 1230009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_lun = bhsr2t->bhsr2t_lun; 1231009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_initiator_task_tag = 1232009ea47eSEdward Tomasz Napierala bhsr2t->bhsr2t_initiator_task_tag; 1233009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_target_transfer_tag = 1234009ea47eSEdward Tomasz Napierala bhsr2t->bhsr2t_target_transfer_tag; 12353dd2a7a5SAlexander Motin bhsdo->bhsdo_datasn = htonl(datasn++); 1236009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_buffer_offset = htonl(off); 1237d43c9ec1SEdward Tomasz Napierala error = icl_pdu_append_data(request, csio->data_ptr + off, len, 1238d43c9ec1SEdward Tomasz Napierala M_NOWAIT); 1239009ea47eSEdward Tomasz Napierala if (error != 0) { 1240d43c9ec1SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate memory; " 1241d43c9ec1SEdward Tomasz Napierala "reconnecting"); 1242009ea47eSEdward Tomasz Napierala icl_pdu_free(request); 1243009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1244009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1245009ea47eSEdward Tomasz Napierala return; 1246009ea47eSEdward Tomasz Napierala } 1247009ea47eSEdward Tomasz Napierala 1248009ea47eSEdward Tomasz Napierala off += len; 1249009ea47eSEdward Tomasz Napierala total_len -= len; 1250009ea47eSEdward Tomasz Napierala 1251009ea47eSEdward Tomasz Napierala if (total_len == 0) { 1252009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_flags |= BHSDO_FLAGS_F; 1253009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "setting F, off %zd", off); 1254009ea47eSEdward Tomasz Napierala } else { 1255009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "not finished, off %zd", off); 1256009ea47eSEdward Tomasz Napierala } 1257009ea47eSEdward Tomasz Napierala 1258009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(request); 1259009ea47eSEdward Tomasz Napierala 1260009ea47eSEdward Tomasz Napierala if (total_len == 0) 1261009ea47eSEdward Tomasz Napierala break; 1262009ea47eSEdward Tomasz Napierala } 1263009ea47eSEdward Tomasz Napierala 1264009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1265009ea47eSEdward Tomasz Napierala } 1266009ea47eSEdward Tomasz Napierala 1267009ea47eSEdward Tomasz Napierala static void 1268009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_async_message(struct icl_pdu *response) 1269009ea47eSEdward Tomasz Napierala { 1270009ea47eSEdward Tomasz Napierala struct iscsi_bhs_asynchronous_message *bhsam; 1271009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1272009ea47eSEdward Tomasz Napierala 1273009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 1274009ea47eSEdward Tomasz Napierala bhsam = (struct iscsi_bhs_asynchronous_message *)response->ip_bhs; 1275009ea47eSEdward Tomasz Napierala switch (bhsam->bhsam_async_event) { 1276009ea47eSEdward Tomasz Napierala case BHSAM_EVENT_TARGET_REQUESTS_LOGOUT: 1277009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target requests logout; removing session"); 1278009ea47eSEdward Tomasz Napierala iscsi_session_logout(is); 1279009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1280009ea47eSEdward Tomasz Napierala break; 1281009ea47eSEdward Tomasz Napierala case BHSAM_EVENT_TARGET_TERMINATES_CONNECTION: 12826960c4e1SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target indicates it will drop the connection"); 1283009ea47eSEdward Tomasz Napierala break; 1284009ea47eSEdward Tomasz Napierala case BHSAM_EVENT_TARGET_TERMINATES_SESSION: 12856960c4e1SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target indicates it will drop the session"); 1286009ea47eSEdward Tomasz Napierala break; 1287009ea47eSEdward Tomasz Napierala default: 1288009ea47eSEdward Tomasz Napierala /* 1289009ea47eSEdward Tomasz Napierala * XXX: Technically, we're obligated to also handle 1290009ea47eSEdward Tomasz Napierala * parameter renegotiation. 1291009ea47eSEdward Tomasz Napierala */ 1292009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "ignoring AsyncEvent %d", bhsam->bhsam_async_event); 1293009ea47eSEdward Tomasz Napierala break; 1294009ea47eSEdward Tomasz Napierala } 1295009ea47eSEdward Tomasz Napierala 1296009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1297009ea47eSEdward Tomasz Napierala } 1298009ea47eSEdward Tomasz Napierala 1299009ea47eSEdward Tomasz Napierala static void 1300009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_reject(struct icl_pdu *response) 1301009ea47eSEdward Tomasz Napierala { 1302009ea47eSEdward Tomasz Napierala struct iscsi_bhs_reject *bhsr; 1303009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1304009ea47eSEdward Tomasz Napierala 1305009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 1306009ea47eSEdward Tomasz Napierala bhsr = (struct iscsi_bhs_reject *)response->ip_bhs; 1307009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "received Reject PDU, reason 0x%x; protocol error?", 1308009ea47eSEdward Tomasz Napierala bhsr->bhsr_reason); 1309009ea47eSEdward Tomasz Napierala 1310009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1311009ea47eSEdward Tomasz Napierala } 1312009ea47eSEdward Tomasz Napierala 1313009ea47eSEdward Tomasz Napierala static int 1314009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_wait(struct iscsi_softc *sc, 1315009ea47eSEdward Tomasz Napierala struct iscsi_daemon_request *request) 1316009ea47eSEdward Tomasz Napierala { 1317009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 131897b84d34SNavdeep Parhar struct icl_drv_limits idl; 1319009ea47eSEdward Tomasz Napierala int error; 1320009ea47eSEdward Tomasz Napierala 1321009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1322009ea47eSEdward Tomasz Napierala for (;;) { 1323009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 13242be596adSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1325ba165a31SEdward Tomasz Napierala if (is->is_conf.isc_enable == 0 && 1326ba165a31SEdward Tomasz Napierala is->is_conf.isc_discovery == 0) { 1327ba165a31SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1328ba165a31SEdward Tomasz Napierala continue; 1329ba165a31SEdward Tomasz Napierala } 1330009ea47eSEdward Tomasz Napierala if (is->is_waiting_for_iscsid) 1331009ea47eSEdward Tomasz Napierala break; 13322be596adSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1333009ea47eSEdward Tomasz Napierala } 1334009ea47eSEdward Tomasz Napierala 1335009ea47eSEdward Tomasz Napierala if (is == NULL) { 133689df4847SJohn Baldwin if (sc->sc_unloading) { 133789df4847SJohn Baldwin sx_sunlock(&sc->sc_lock); 133889df4847SJohn Baldwin return (ENXIO); 133989df4847SJohn Baldwin } 134089df4847SJohn Baldwin 1341009ea47eSEdward Tomasz Napierala /* 1342009ea47eSEdward Tomasz Napierala * No session requires attention from iscsid(8); wait. 1343009ea47eSEdward Tomasz Napierala */ 1344009ea47eSEdward Tomasz Napierala error = cv_wait_sig(&sc->sc_cv, &sc->sc_lock); 1345009ea47eSEdward Tomasz Napierala if (error != 0) { 1346009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1347009ea47eSEdward Tomasz Napierala return (error); 1348009ea47eSEdward Tomasz Napierala } 1349009ea47eSEdward Tomasz Napierala continue; 1350009ea47eSEdward Tomasz Napierala } 1351009ea47eSEdward Tomasz Napierala 1352009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = false; 1353009ea47eSEdward Tomasz Napierala is->is_login_phase = true; 1354009ea47eSEdward Tomasz Napierala is->is_reason[0] = '\0'; 1355009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1356009ea47eSEdward Tomasz Napierala 1357009ea47eSEdward Tomasz Napierala request->idr_session_id = is->is_id; 1358ffe82e05SAlexander Motin memcpy(&request->idr_isid, &is->is_isid, 1359ffe82e05SAlexander Motin sizeof(request->idr_isid)); 1360ffe82e05SAlexander Motin request->idr_tsih = 0; /* New or reinstated session. */ 1361009ea47eSEdward Tomasz Napierala memcpy(&request->idr_conf, &is->is_conf, 1362009ea47eSEdward Tomasz Napierala sizeof(request->idr_conf)); 1363009ea47eSEdward Tomasz Napierala 136482babffbSEdward Tomasz Napierala error = icl_limits(is->is_conf.isc_offload, 136597b84d34SNavdeep Parhar is->is_conf.isc_iser, &idl); 136682babffbSEdward Tomasz Napierala if (error != 0) { 136782babffbSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "icl_limits for offload \"%s\" " 136882babffbSEdward Tomasz Napierala "failed with error %d", is->is_conf.isc_offload, 136982babffbSEdward Tomasz Napierala error); 137082babffbSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 137182babffbSEdward Tomasz Napierala return (error); 137282babffbSEdward Tomasz Napierala } 137397b84d34SNavdeep Parhar request->idr_limits.isl_max_recv_data_segment_length = 137497b84d34SNavdeep Parhar idl.idl_max_recv_data_segment_length; 137597b84d34SNavdeep Parhar request->idr_limits.isl_max_send_data_segment_length = 137648214203SNavdeep Parhar idl.idl_max_send_data_segment_length; 137797b84d34SNavdeep Parhar request->idr_limits.isl_max_burst_length = 137897b84d34SNavdeep Parhar idl.idl_max_burst_length; 137997b84d34SNavdeep Parhar request->idr_limits.isl_first_burst_length = 138097b84d34SNavdeep Parhar idl.idl_first_burst_length; 138182babffbSEdward Tomasz Napierala 1382009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1383009ea47eSEdward Tomasz Napierala return (0); 1384009ea47eSEdward Tomasz Napierala } 1385009ea47eSEdward Tomasz Napierala } 1386009ea47eSEdward Tomasz Napierala 1387009ea47eSEdward Tomasz Napierala static int 1388009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_handoff(struct iscsi_softc *sc, 1389009ea47eSEdward Tomasz Napierala struct iscsi_daemon_handoff *handoff) 1390009ea47eSEdward Tomasz Napierala { 1391009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1392f5cadbc4SNavdeep Parhar struct icl_conn *ic; 1393009ea47eSEdward Tomasz Napierala int error; 1394009ea47eSEdward Tomasz Napierala 1395009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1396009ea47eSEdward Tomasz Napierala 1397009ea47eSEdward Tomasz Napierala /* 1398009ea47eSEdward Tomasz Napierala * Find the session to hand off socket to. 1399009ea47eSEdward Tomasz Napierala */ 1400009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1401009ea47eSEdward Tomasz Napierala if (is->is_id == handoff->idh_session_id) 1402009ea47eSEdward Tomasz Napierala break; 1403009ea47eSEdward Tomasz Napierala } 1404009ea47eSEdward Tomasz Napierala if (is == NULL) { 1405009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1406009ea47eSEdward Tomasz Napierala return (ESRCH); 1407009ea47eSEdward Tomasz Napierala } 1408009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1409f5cadbc4SNavdeep Parhar ic = is->is_conn; 1410009ea47eSEdward Tomasz Napierala if (is->is_conf.isc_discovery || is->is_terminating) { 1411009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1412009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1413009ea47eSEdward Tomasz Napierala return (EINVAL); 1414009ea47eSEdward Tomasz Napierala } 14150260023fSEdward Tomasz Napierala if (is->is_connected) { 14160260023fSEdward Tomasz Napierala /* 14170260023fSEdward Tomasz Napierala * This might have happened because another iscsid(8) 14180260023fSEdward Tomasz Napierala * instance handed off the connection in the meantime. 14190260023fSEdward Tomasz Napierala * Just return. 14200260023fSEdward Tomasz Napierala */ 14210260023fSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "handoff on already connected " 14220260023fSEdward Tomasz Napierala "session"); 14230260023fSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 14240260023fSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 14250260023fSEdward Tomasz Napierala return (EBUSY); 14260260023fSEdward Tomasz Napierala } 1427009ea47eSEdward Tomasz Napierala 1428009ea47eSEdward Tomasz Napierala strlcpy(is->is_target_alias, handoff->idh_target_alias, 1429009ea47eSEdward Tomasz Napierala sizeof(is->is_target_alias)); 1430ffe82e05SAlexander Motin is->is_tsih = handoff->idh_tsih; 1431009ea47eSEdward Tomasz Napierala is->is_statsn = handoff->idh_statsn; 14327dbbd1aeSAlexander Motin is->is_protocol_level = handoff->idh_protocol_level; 1433009ea47eSEdward Tomasz Napierala is->is_initial_r2t = handoff->idh_initial_r2t; 1434009ea47eSEdward Tomasz Napierala is->is_immediate_data = handoff->idh_immediate_data; 1435c8b73c2cSNavdeep Parhar 1436*0cc7d64aSJohn Baldwin ic->ic_max_recv_data_segment_length = 143797b84d34SNavdeep Parhar handoff->idh_max_recv_data_segment_length; 1438*0cc7d64aSJohn Baldwin ic->ic_max_send_data_segment_length = 143997b84d34SNavdeep Parhar handoff->idh_max_send_data_segment_length; 1440009ea47eSEdward Tomasz Napierala is->is_max_burst_length = handoff->idh_max_burst_length; 1441009ea47eSEdward Tomasz Napierala is->is_first_burst_length = handoff->idh_first_burst_length; 1442009ea47eSEdward Tomasz Napierala 1443009ea47eSEdward Tomasz Napierala if (handoff->idh_header_digest == ISCSI_DIGEST_CRC32C) 1444f5cadbc4SNavdeep Parhar ic->ic_header_crc32c = true; 1445009ea47eSEdward Tomasz Napierala else 1446f5cadbc4SNavdeep Parhar ic->ic_header_crc32c = false; 1447009ea47eSEdward Tomasz Napierala if (handoff->idh_data_digest == ISCSI_DIGEST_CRC32C) 1448f5cadbc4SNavdeep Parhar ic->ic_data_crc32c = true; 1449009ea47eSEdward Tomasz Napierala else 1450f5cadbc4SNavdeep Parhar ic->ic_data_crc32c = false; 1451b218ca6fSEdward Tomasz Napierala ic->ic_maxtags = maxtags; 1452009ea47eSEdward Tomasz Napierala 1453009ea47eSEdward Tomasz Napierala is->is_cmdsn = 0; 1454cf23c509SEdward Tomasz Napierala is->is_expcmdsn = 0; 1455cf23c509SEdward Tomasz Napierala is->is_maxcmdsn = 0; 1456009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = false; 1457009ea47eSEdward Tomasz Napierala is->is_login_phase = false; 1458009ea47eSEdward Tomasz Napierala is->is_timeout = 0; 1459009ea47eSEdward Tomasz Napierala is->is_connected = true; 1460009ea47eSEdward Tomasz Napierala is->is_reason[0] = '\0'; 1461009ea47eSEdward Tomasz Napierala 1462009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1463009ea47eSEdward Tomasz Napierala 146457a4f20bSEdward Tomasz Napierala /* 1465906a424bSEdward Tomasz Napierala * If we're going through the proxy, the idh_socket will be 0, 1466906a424bSEdward Tomasz Napierala * and the ICL module can simply ignore this call. It can also 1467906a424bSEdward Tomasz Napierala * use it to determine it's no longer in the Login phase. 146857a4f20bSEdward Tomasz Napierala */ 1469f5cadbc4SNavdeep Parhar error = icl_conn_handoff(ic, handoff->idh_socket); 1470009ea47eSEdward Tomasz Napierala if (error != 0) { 1471009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1472009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1473009ea47eSEdward Tomasz Napierala return (error); 1474009ea47eSEdward Tomasz Napierala } 1475009ea47eSEdward Tomasz Napierala 1476009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1477009ea47eSEdward Tomasz Napierala 1478009ea47eSEdward Tomasz Napierala if (is->is_sim != NULL) { 1479009ea47eSEdward Tomasz Napierala /* 1480009ea47eSEdward Tomasz Napierala * When reconnecting, there already is SIM allocated for the session. 1481009ea47eSEdward Tomasz Napierala */ 1482009ea47eSEdward Tomasz Napierala KASSERT(is->is_simq_frozen, ("reconnect without frozen simq")); 1483009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1484009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "releasing"); 1485009ea47eSEdward Tomasz Napierala is->is_simq_frozen = false; 1486186bcdaaSEdward Tomasz Napierala xpt_release_simq(is->is_sim, 1); 1487009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1488009ea47eSEdward Tomasz Napierala 1489009ea47eSEdward Tomasz Napierala } else { 1490009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1491b218ca6fSEdward Tomasz Napierala is->is_devq = cam_simq_alloc(ic->ic_maxtags); 1492009ea47eSEdward Tomasz Napierala if (is->is_devq == NULL) { 1493009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate simq"); 1494009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1495009ea47eSEdward Tomasz Napierala return (ENOMEM); 1496009ea47eSEdward Tomasz Napierala } 1497009ea47eSEdward Tomasz Napierala 149847769bc5SJohn Baldwin is->is_sim = cam_sim_alloc(iscsi_action, NULL, "iscsi", 1499009ea47eSEdward Tomasz Napierala is, is->is_id /* unit */, &is->is_lock, 1500b218ca6fSEdward Tomasz Napierala 1, ic->ic_maxtags, is->is_devq); 1501009ea47eSEdward Tomasz Napierala if (is->is_sim == NULL) { 1502009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1503009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate SIM"); 1504009ea47eSEdward Tomasz Napierala cam_simq_free(is->is_devq); 1505009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1506009ea47eSEdward Tomasz Napierala return (ENOMEM); 1507009ea47eSEdward Tomasz Napierala } 1508009ea47eSEdward Tomasz Napierala 1509009ea47eSEdward Tomasz Napierala error = xpt_bus_register(is->is_sim, NULL, 0); 1510009ea47eSEdward Tomasz Napierala if (error != 0) { 1511009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1512009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to register bus"); 1513009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1514009ea47eSEdward Tomasz Napierala return (ENOMEM); 1515009ea47eSEdward Tomasz Napierala } 1516009ea47eSEdward Tomasz Napierala 1517009ea47eSEdward Tomasz Napierala error = xpt_create_path(&is->is_path, /*periph*/NULL, 1518009ea47eSEdward Tomasz Napierala cam_sim_path(is->is_sim), CAM_TARGET_WILDCARD, 1519009ea47eSEdward Tomasz Napierala CAM_LUN_WILDCARD); 1520009ea47eSEdward Tomasz Napierala if (error != CAM_REQ_CMP) { 1521009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1522009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to create path"); 1523009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1524009ea47eSEdward Tomasz Napierala return (ENOMEM); 1525009ea47eSEdward Tomasz Napierala } 1526009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1527009ea47eSEdward Tomasz Napierala } 1528009ea47eSEdward Tomasz Napierala 1529009ea47eSEdward Tomasz Napierala return (0); 1530009ea47eSEdward Tomasz Napierala } 1531009ea47eSEdward Tomasz Napierala 1532009ea47eSEdward Tomasz Napierala static int 1533009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_fail(struct iscsi_softc *sc, 1534009ea47eSEdward Tomasz Napierala struct iscsi_daemon_fail *fail) 1535009ea47eSEdward Tomasz Napierala { 1536009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1537009ea47eSEdward Tomasz Napierala 1538009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1539009ea47eSEdward Tomasz Napierala 1540009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1541009ea47eSEdward Tomasz Napierala if (is->is_id == fail->idf_session_id) 1542009ea47eSEdward Tomasz Napierala break; 1543009ea47eSEdward Tomasz Napierala } 1544009ea47eSEdward Tomasz Napierala if (is == NULL) { 1545009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1546009ea47eSEdward Tomasz Napierala return (ESRCH); 1547009ea47eSEdward Tomasz Napierala } 1548009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1549009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "iscsid(8) failed: %s", 1550009ea47eSEdward Tomasz Napierala fail->idf_reason); 1551009ea47eSEdward Tomasz Napierala strlcpy(is->is_reason, fail->idf_reason, sizeof(is->is_reason)); 1552009ea47eSEdward Tomasz Napierala //is->is_waiting_for_iscsid = false; 1553009ea47eSEdward Tomasz Napierala //is->is_login_phase = true; 1554009ea47eSEdward Tomasz Napierala //iscsi_session_reconnect(is); 1555009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1556009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1557009ea47eSEdward Tomasz Napierala 1558009ea47eSEdward Tomasz Napierala return (0); 1559009ea47eSEdward Tomasz Napierala } 1560009ea47eSEdward Tomasz Napierala 1561009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 1562009ea47eSEdward Tomasz Napierala static int 1563009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_connect(struct iscsi_softc *sc, 1564009ea47eSEdward Tomasz Napierala struct iscsi_daemon_connect *idc) 1565009ea47eSEdward Tomasz Napierala { 1566009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1567009ea47eSEdward Tomasz Napierala struct sockaddr *from_sa, *to_sa; 1568009ea47eSEdward Tomasz Napierala int error; 1569009ea47eSEdward Tomasz Napierala 1570009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1571009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1572009ea47eSEdward Tomasz Napierala if (is->is_id == idc->idc_session_id) 1573009ea47eSEdward Tomasz Napierala break; 1574009ea47eSEdward Tomasz Napierala } 1575009ea47eSEdward Tomasz Napierala if (is == NULL) { 1576009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1577009ea47eSEdward Tomasz Napierala return (ESRCH); 1578009ea47eSEdward Tomasz Napierala } 1579009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1580009ea47eSEdward Tomasz Napierala 1581009ea47eSEdward Tomasz Napierala if (idc->idc_from_addrlen > 0) { 1582009ea47eSEdward Tomasz Napierala error = getsockaddr(&from_sa, (void *)idc->idc_from_addr, idc->idc_from_addrlen); 158357a4f20bSEdward Tomasz Napierala if (error != 0) { 158457a4f20bSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, 158557a4f20bSEdward Tomasz Napierala "getsockaddr failed with error %d", error); 1586009ea47eSEdward Tomasz Napierala return (error); 158757a4f20bSEdward Tomasz Napierala } 1588009ea47eSEdward Tomasz Napierala } else { 1589009ea47eSEdward Tomasz Napierala from_sa = NULL; 1590009ea47eSEdward Tomasz Napierala } 1591009ea47eSEdward Tomasz Napierala error = getsockaddr(&to_sa, (void *)idc->idc_to_addr, idc->idc_to_addrlen); 1592009ea47eSEdward Tomasz Napierala if (error != 0) { 159357a4f20bSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "getsockaddr failed with error %d", 159457a4f20bSEdward Tomasz Napierala error); 1595009ea47eSEdward Tomasz Napierala free(from_sa, M_SONAME); 1596009ea47eSEdward Tomasz Napierala return (error); 1597009ea47eSEdward Tomasz Napierala } 1598009ea47eSEdward Tomasz Napierala 1599009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1600a3fd63f2SEdward Tomasz Napierala is->is_statsn = 0; 1601a3fd63f2SEdward Tomasz Napierala is->is_cmdsn = 0; 1602a3fd63f2SEdward Tomasz Napierala is->is_expcmdsn = 0; 1603a3fd63f2SEdward Tomasz Napierala is->is_maxcmdsn = 0; 1604009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = false; 1605009ea47eSEdward Tomasz Napierala is->is_login_phase = true; 1606009ea47eSEdward Tomasz Napierala is->is_timeout = 0; 1607009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1608009ea47eSEdward Tomasz Napierala 1609f41492b0SEdward Tomasz Napierala error = icl_conn_connect(is->is_conn, idc->idc_domain, 1610009ea47eSEdward Tomasz Napierala idc->idc_socktype, idc->idc_protocol, from_sa, to_sa); 1611009ea47eSEdward Tomasz Napierala free(from_sa, M_SONAME); 1612009ea47eSEdward Tomasz Napierala free(to_sa, M_SONAME); 1613009ea47eSEdward Tomasz Napierala 1614009ea47eSEdward Tomasz Napierala /* 1615009ea47eSEdward Tomasz Napierala * Digests are always disabled during login phase. 1616009ea47eSEdward Tomasz Napierala */ 1617009ea47eSEdward Tomasz Napierala is->is_conn->ic_header_crc32c = false; 1618009ea47eSEdward Tomasz Napierala is->is_conn->ic_data_crc32c = false; 1619009ea47eSEdward Tomasz Napierala 1620009ea47eSEdward Tomasz Napierala return (error); 1621009ea47eSEdward Tomasz Napierala } 1622009ea47eSEdward Tomasz Napierala 1623009ea47eSEdward Tomasz Napierala static int 1624009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_send(struct iscsi_softc *sc, 1625009ea47eSEdward Tomasz Napierala struct iscsi_daemon_send *ids) 1626009ea47eSEdward Tomasz Napierala { 1627009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1628009ea47eSEdward Tomasz Napierala struct icl_pdu *ip; 1629009ea47eSEdward Tomasz Napierala size_t datalen; 1630009ea47eSEdward Tomasz Napierala void *data; 1631009ea47eSEdward Tomasz Napierala int error; 1632009ea47eSEdward Tomasz Napierala 1633009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1634009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1635009ea47eSEdward Tomasz Napierala if (is->is_id == ids->ids_session_id) 1636009ea47eSEdward Tomasz Napierala break; 1637009ea47eSEdward Tomasz Napierala } 1638009ea47eSEdward Tomasz Napierala if (is == NULL) { 1639009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1640009ea47eSEdward Tomasz Napierala return (ESRCH); 1641009ea47eSEdward Tomasz Napierala } 1642009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1643009ea47eSEdward Tomasz Napierala 1644009ea47eSEdward Tomasz Napierala if (is->is_login_phase == false) 1645009ea47eSEdward Tomasz Napierala return (EBUSY); 1646009ea47eSEdward Tomasz Napierala 1647009ea47eSEdward Tomasz Napierala if (is->is_terminating || is->is_reconnecting) 1648009ea47eSEdward Tomasz Napierala return (EIO); 1649009ea47eSEdward Tomasz Napierala 1650009ea47eSEdward Tomasz Napierala datalen = ids->ids_data_segment_len; 1651*0cc7d64aSJohn Baldwin if (datalen > is->is_conn->ic_max_send_data_segment_length) 1652009ea47eSEdward Tomasz Napierala return (EINVAL); 1653009ea47eSEdward Tomasz Napierala if (datalen > 0) { 1654009ea47eSEdward Tomasz Napierala data = malloc(datalen, M_ISCSI, M_WAITOK); 1655009ea47eSEdward Tomasz Napierala error = copyin(ids->ids_data_segment, data, datalen); 1656009ea47eSEdward Tomasz Napierala if (error != 0) { 1657009ea47eSEdward Tomasz Napierala free(data, M_ISCSI); 1658009ea47eSEdward Tomasz Napierala return (error); 1659009ea47eSEdward Tomasz Napierala } 1660009ea47eSEdward Tomasz Napierala } 1661009ea47eSEdward Tomasz Napierala 1662d2d52b00SEdward Tomasz Napierala ip = icl_pdu_new(is->is_conn, M_WAITOK); 1663009ea47eSEdward Tomasz Napierala memcpy(ip->ip_bhs, ids->ids_bhs, sizeof(*ip->ip_bhs)); 1664009ea47eSEdward Tomasz Napierala if (datalen > 0) { 1665009ea47eSEdward Tomasz Napierala error = icl_pdu_append_data(ip, data, datalen, M_WAITOK); 1666009ea47eSEdward Tomasz Napierala KASSERT(error == 0, ("icl_pdu_append_data(..., M_WAITOK) failed")); 1667009ea47eSEdward Tomasz Napierala free(data, M_ISCSI); 1668009ea47eSEdward Tomasz Napierala } 1669d66a906bSEdward Tomasz Napierala iscsi_pdu_queue(ip); 1670009ea47eSEdward Tomasz Napierala 1671009ea47eSEdward Tomasz Napierala return (0); 1672009ea47eSEdward Tomasz Napierala } 1673009ea47eSEdward Tomasz Napierala 1674009ea47eSEdward Tomasz Napierala static int 1675009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_receive(struct iscsi_softc *sc, 1676009ea47eSEdward Tomasz Napierala struct iscsi_daemon_receive *idr) 1677009ea47eSEdward Tomasz Napierala { 1678009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1679009ea47eSEdward Tomasz Napierala struct icl_pdu *ip; 1680009ea47eSEdward Tomasz Napierala void *data; 16812f0586b2SEdward Tomasz Napierala int error; 1682009ea47eSEdward Tomasz Napierala 1683009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1684009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1685009ea47eSEdward Tomasz Napierala if (is->is_id == idr->idr_session_id) 1686009ea47eSEdward Tomasz Napierala break; 1687009ea47eSEdward Tomasz Napierala } 1688009ea47eSEdward Tomasz Napierala if (is == NULL) { 1689009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1690009ea47eSEdward Tomasz Napierala return (ESRCH); 1691009ea47eSEdward Tomasz Napierala } 1692009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1693009ea47eSEdward Tomasz Napierala 1694009ea47eSEdward Tomasz Napierala if (is->is_login_phase == false) 1695009ea47eSEdward Tomasz Napierala return (EBUSY); 1696009ea47eSEdward Tomasz Napierala 1697009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1698009ea47eSEdward Tomasz Napierala while (is->is_login_pdu == NULL && 1699009ea47eSEdward Tomasz Napierala is->is_terminating == false && 17002f0586b2SEdward Tomasz Napierala is->is_reconnecting == false) { 17012f0586b2SEdward Tomasz Napierala error = cv_wait_sig(&is->is_login_cv, &is->is_lock); 17022f0586b2SEdward Tomasz Napierala if (error != 0) { 17032f0586b2SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 17042f0586b2SEdward Tomasz Napierala return (error); 17052f0586b2SEdward Tomasz Napierala } 17062f0586b2SEdward Tomasz Napierala } 1707009ea47eSEdward Tomasz Napierala if (is->is_terminating || is->is_reconnecting) { 1708009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1709009ea47eSEdward Tomasz Napierala return (EIO); 1710009ea47eSEdward Tomasz Napierala } 1711009ea47eSEdward Tomasz Napierala ip = is->is_login_pdu; 1712009ea47eSEdward Tomasz Napierala is->is_login_pdu = NULL; 1713009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1714009ea47eSEdward Tomasz Napierala 1715009ea47eSEdward Tomasz Napierala if (ip->ip_data_len > idr->idr_data_segment_len) { 1716009ea47eSEdward Tomasz Napierala icl_pdu_free(ip); 1717009ea47eSEdward Tomasz Napierala return (EMSGSIZE); 1718009ea47eSEdward Tomasz Napierala } 1719009ea47eSEdward Tomasz Napierala 1720009ea47eSEdward Tomasz Napierala copyout(ip->ip_bhs, idr->idr_bhs, sizeof(*ip->ip_bhs)); 1721009ea47eSEdward Tomasz Napierala if (ip->ip_data_len > 0) { 1722009ea47eSEdward Tomasz Napierala data = malloc(ip->ip_data_len, M_ISCSI, M_WAITOK); 1723009ea47eSEdward Tomasz Napierala icl_pdu_get_data(ip, 0, data, ip->ip_data_len); 1724009ea47eSEdward Tomasz Napierala copyout(data, idr->idr_data_segment, ip->ip_data_len); 1725009ea47eSEdward Tomasz Napierala free(data, M_ISCSI); 1726009ea47eSEdward Tomasz Napierala } 1727009ea47eSEdward Tomasz Napierala 1728009ea47eSEdward Tomasz Napierala icl_pdu_free(ip); 1729009ea47eSEdward Tomasz Napierala 1730009ea47eSEdward Tomasz Napierala return (0); 1731009ea47eSEdward Tomasz Napierala } 1732009ea47eSEdward Tomasz Napierala #endif /* ICL_KERNEL_PROXY */ 1733009ea47eSEdward Tomasz Napierala 1734009ea47eSEdward Tomasz Napierala static void 1735009ea47eSEdward Tomasz Napierala iscsi_sanitize_session_conf(struct iscsi_session_conf *isc) 1736009ea47eSEdward Tomasz Napierala { 1737009ea47eSEdward Tomasz Napierala /* 1738009ea47eSEdward Tomasz Napierala * Just make sure all the fields are null-terminated. 1739009ea47eSEdward Tomasz Napierala * 1740009ea47eSEdward Tomasz Napierala * XXX: This is not particularly secure. We should 1741009ea47eSEdward Tomasz Napierala * create our own conf and then copy in relevant 1742009ea47eSEdward Tomasz Napierala * fields. 1743009ea47eSEdward Tomasz Napierala */ 1744009ea47eSEdward Tomasz Napierala isc->isc_initiator[ISCSI_NAME_LEN - 1] = '\0'; 1745009ea47eSEdward Tomasz Napierala isc->isc_initiator_addr[ISCSI_ADDR_LEN - 1] = '\0'; 1746009ea47eSEdward Tomasz Napierala isc->isc_initiator_alias[ISCSI_ALIAS_LEN - 1] = '\0'; 1747009ea47eSEdward Tomasz Napierala isc->isc_target[ISCSI_NAME_LEN - 1] = '\0'; 1748009ea47eSEdward Tomasz Napierala isc->isc_target_addr[ISCSI_ADDR_LEN - 1] = '\0'; 1749009ea47eSEdward Tomasz Napierala isc->isc_user[ISCSI_NAME_LEN - 1] = '\0'; 1750009ea47eSEdward Tomasz Napierala isc->isc_secret[ISCSI_SECRET_LEN - 1] = '\0'; 1751009ea47eSEdward Tomasz Napierala isc->isc_mutual_user[ISCSI_NAME_LEN - 1] = '\0'; 1752009ea47eSEdward Tomasz Napierala isc->isc_mutual_secret[ISCSI_SECRET_LEN - 1] = '\0'; 1753009ea47eSEdward Tomasz Napierala } 1754009ea47eSEdward Tomasz Napierala 175551be90b5SEdward Tomasz Napierala static bool 175651be90b5SEdward Tomasz Napierala iscsi_valid_session_conf(const struct iscsi_session_conf *isc) 175751be90b5SEdward Tomasz Napierala { 175851be90b5SEdward Tomasz Napierala 175951be90b5SEdward Tomasz Napierala if (isc->isc_initiator[0] == '\0') { 176051be90b5SEdward Tomasz Napierala ISCSI_DEBUG("empty isc_initiator"); 176151be90b5SEdward Tomasz Napierala return (false); 176251be90b5SEdward Tomasz Napierala } 176351be90b5SEdward Tomasz Napierala 176451be90b5SEdward Tomasz Napierala if (isc->isc_target_addr[0] == '\0') { 176551be90b5SEdward Tomasz Napierala ISCSI_DEBUG("empty isc_target_addr"); 176651be90b5SEdward Tomasz Napierala return (false); 176751be90b5SEdward Tomasz Napierala } 176851be90b5SEdward Tomasz Napierala 176951be90b5SEdward Tomasz Napierala if (isc->isc_discovery != 0 && isc->isc_target[0] != 0) { 177051be90b5SEdward Tomasz Napierala ISCSI_DEBUG("non-empty isc_target for discovery session"); 177151be90b5SEdward Tomasz Napierala return (false); 177251be90b5SEdward Tomasz Napierala } 177351be90b5SEdward Tomasz Napierala 177451be90b5SEdward Tomasz Napierala if (isc->isc_discovery == 0 && isc->isc_target[0] == 0) { 177551be90b5SEdward Tomasz Napierala ISCSI_DEBUG("empty isc_target for non-discovery session"); 177651be90b5SEdward Tomasz Napierala return (false); 177751be90b5SEdward Tomasz Napierala } 177851be90b5SEdward Tomasz Napierala 177951be90b5SEdward Tomasz Napierala return (true); 178051be90b5SEdward Tomasz Napierala } 178151be90b5SEdward Tomasz Napierala 1782009ea47eSEdward Tomasz Napierala static int 1783009ea47eSEdward Tomasz Napierala iscsi_ioctl_session_add(struct iscsi_softc *sc, struct iscsi_session_add *isa) 1784009ea47eSEdward Tomasz Napierala { 1785009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1786009ea47eSEdward Tomasz Napierala const struct iscsi_session *is2; 1787009ea47eSEdward Tomasz Napierala int error; 1788009ea47eSEdward Tomasz Napierala 1789009ea47eSEdward Tomasz Napierala iscsi_sanitize_session_conf(&isa->isa_conf); 179051be90b5SEdward Tomasz Napierala if (iscsi_valid_session_conf(&isa->isa_conf) == false) 179151be90b5SEdward Tomasz Napierala return (EINVAL); 1792009ea47eSEdward Tomasz Napierala 1793009ea47eSEdward Tomasz Napierala is = malloc(sizeof(*is), M_ISCSI, M_ZERO | M_WAITOK); 1794009ea47eSEdward Tomasz Napierala memcpy(&is->is_conf, &isa->isa_conf, sizeof(is->is_conf)); 1795009ea47eSEdward Tomasz Napierala 1796009ea47eSEdward Tomasz Napierala sx_xlock(&sc->sc_lock); 1797009ea47eSEdward Tomasz Napierala 1798009ea47eSEdward Tomasz Napierala /* 1799009ea47eSEdward Tomasz Napierala * Prevent duplicates. 1800009ea47eSEdward Tomasz Napierala */ 1801009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is2, &sc->sc_sessions, is_next) { 18027843bd03SEdward Tomasz Napierala if (!!is->is_conf.isc_discovery != 18037843bd03SEdward Tomasz Napierala !!is2->is_conf.isc_discovery) 18047843bd03SEdward Tomasz Napierala continue; 18057843bd03SEdward Tomasz Napierala 18067843bd03SEdward Tomasz Napierala if (strcmp(is->is_conf.isc_target_addr, 18077843bd03SEdward Tomasz Napierala is2->is_conf.isc_target_addr) != 0) 18087843bd03SEdward Tomasz Napierala continue; 18097843bd03SEdward Tomasz Napierala 18107843bd03SEdward Tomasz Napierala if (is->is_conf.isc_discovery == 0 && 18117843bd03SEdward Tomasz Napierala strcmp(is->is_conf.isc_target, 18127843bd03SEdward Tomasz Napierala is2->is_conf.isc_target) != 0) 18137843bd03SEdward Tomasz Napierala continue; 18147843bd03SEdward Tomasz Napierala 1815009ea47eSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 18167843bd03SEdward Tomasz Napierala free(is, M_ISCSI); 1817009ea47eSEdward Tomasz Napierala return (EBUSY); 1818009ea47eSEdward Tomasz Napierala } 1819009ea47eSEdward Tomasz Napierala 182082babffbSEdward Tomasz Napierala is->is_conn = icl_new_conn(is->is_conf.isc_offload, 1821b8911594SEdward Tomasz Napierala is->is_conf.isc_iser, "iscsi", &is->is_lock); 182282babffbSEdward Tomasz Napierala if (is->is_conn == NULL) { 182382babffbSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 182482babffbSEdward Tomasz Napierala free(is, M_ISCSI); 182582babffbSEdward Tomasz Napierala return (EINVAL); 182682babffbSEdward Tomasz Napierala } 1827009ea47eSEdward Tomasz Napierala is->is_conn->ic_receive = iscsi_receive_callback; 1828009ea47eSEdward Tomasz Napierala is->is_conn->ic_error = iscsi_error_callback; 1829009ea47eSEdward Tomasz Napierala is->is_conn->ic_prv0 = is; 1830009ea47eSEdward Tomasz Napierala TAILQ_INIT(&is->is_outstanding); 183116c158a5SEdward Tomasz Napierala STAILQ_INIT(&is->is_postponed); 1832009ea47eSEdward Tomasz Napierala mtx_init(&is->is_lock, "iscsi_lock", NULL, MTX_DEF); 1833009ea47eSEdward Tomasz Napierala cv_init(&is->is_maintenance_cv, "iscsi_mt"); 1834009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 1835009ea47eSEdward Tomasz Napierala cv_init(&is->is_login_cv, "iscsi_login"); 1836009ea47eSEdward Tomasz Napierala #endif 1837009ea47eSEdward Tomasz Napierala 1838*0cc7d64aSJohn Baldwin /* 1839*0cc7d64aSJohn Baldwin * Set some default values, from RFC 3720, section 12. 1840*0cc7d64aSJohn Baldwin * 1841*0cc7d64aSJohn Baldwin * These values are updated by the handoff IOCTL, but are 1842*0cc7d64aSJohn Baldwin * needed prior to the handoff to support sending the ISER 1843*0cc7d64aSJohn Baldwin * login PDU. 1844*0cc7d64aSJohn Baldwin */ 1845*0cc7d64aSJohn Baldwin is->is_conn->ic_max_recv_data_segment_length = 8192; 1846*0cc7d64aSJohn Baldwin is->is_conn->ic_max_send_data_segment_length = 8192; 1847*0cc7d64aSJohn Baldwin is->is_max_burst_length = 262144; 1848*0cc7d64aSJohn Baldwin is->is_first_burst_length = 65536; 1849*0cc7d64aSJohn Baldwin 1850009ea47eSEdward Tomasz Napierala is->is_softc = sc; 1851009ea47eSEdward Tomasz Napierala sc->sc_last_session_id++; 1852009ea47eSEdward Tomasz Napierala is->is_id = sc->sc_last_session_id; 1853ffe82e05SAlexander Motin is->is_isid[0] = 0x80; /* RFC 3720, 10.12.5: 10b, "Random" ISID. */ 1854ffe82e05SAlexander Motin arc4rand(&is->is_isid[1], 5, 0); 1855ffe82e05SAlexander Motin is->is_tsih = 0; 1856009ea47eSEdward Tomasz Napierala callout_init(&is->is_callout, 1); 1857009ea47eSEdward Tomasz Napierala 1858009ea47eSEdward Tomasz Napierala error = kthread_add(iscsi_maintenance_thread, is, NULL, NULL, 0, 0, "iscsimt"); 1859009ea47eSEdward Tomasz Napierala if (error != 0) { 1860009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "kthread_add(9) failed with error %d", error); 186109f2b94bSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 1862009ea47eSEdward Tomasz Napierala return (error); 1863009ea47eSEdward Tomasz Napierala } 1864009ea47eSEdward Tomasz Napierala 186509f2b94bSEdward Tomasz Napierala callout_reset(&is->is_callout, 1 * hz, iscsi_callout, is); 186609f2b94bSEdward Tomasz Napierala TAILQ_INSERT_TAIL(&sc->sc_sessions, is, is_next); 186709f2b94bSEdward Tomasz Napierala 18682be596adSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1869ba165a31SEdward Tomasz Napierala /* 1870ba165a31SEdward Tomasz Napierala * Don't notify iscsid(8) if the session is disabled and it's not 1871ba165a31SEdward Tomasz Napierala * a discovery session, 1872ba165a31SEdward Tomasz Napierala */ 1873ba165a31SEdward Tomasz Napierala if (is->is_conf.isc_enable == 0 && is->is_conf.isc_discovery == 0) { 1874ba165a31SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1875ba165a31SEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 1876ba165a31SEdward Tomasz Napierala return (0); 1877ba165a31SEdward Tomasz Napierala } 1878ba165a31SEdward Tomasz Napierala 1879009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = true; 1880009ea47eSEdward Tomasz Napierala strlcpy(is->is_reason, "Waiting for iscsid(8)", sizeof(is->is_reason)); 18812be596adSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1882009ea47eSEdward Tomasz Napierala cv_signal(&sc->sc_cv); 1883009ea47eSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 1884009ea47eSEdward Tomasz Napierala return (0); 1885009ea47eSEdward Tomasz Napierala } 1886009ea47eSEdward Tomasz Napierala 1887009ea47eSEdward Tomasz Napierala static bool 1888009ea47eSEdward Tomasz Napierala iscsi_session_conf_matches(unsigned int id1, const struct iscsi_session_conf *c1, 1889009ea47eSEdward Tomasz Napierala unsigned int id2, const struct iscsi_session_conf *c2) 1890009ea47eSEdward Tomasz Napierala { 18916cc1e267SEdward Tomasz Napierala 18926cc1e267SEdward Tomasz Napierala if (id2 != 0 && id2 != id1) 1893009ea47eSEdward Tomasz Napierala return (false); 18946cc1e267SEdward Tomasz Napierala if (c2->isc_target[0] != '\0' && 18956cc1e267SEdward Tomasz Napierala strcmp(c1->isc_target, c2->isc_target) != 0) 18966cc1e267SEdward Tomasz Napierala return (false); 18976cc1e267SEdward Tomasz Napierala if (c2->isc_target_addr[0] != '\0' && 18986cc1e267SEdward Tomasz Napierala strcmp(c1->isc_target_addr, c2->isc_target_addr) != 0) 18996cc1e267SEdward Tomasz Napierala return (false); 19006cc1e267SEdward Tomasz Napierala return (true); 1901009ea47eSEdward Tomasz Napierala } 1902009ea47eSEdward Tomasz Napierala 1903009ea47eSEdward Tomasz Napierala static int 1904009ea47eSEdward Tomasz Napierala iscsi_ioctl_session_remove(struct iscsi_softc *sc, 1905009ea47eSEdward Tomasz Napierala struct iscsi_session_remove *isr) 1906009ea47eSEdward Tomasz Napierala { 1907009ea47eSEdward Tomasz Napierala struct iscsi_session *is, *tmp; 1908009ea47eSEdward Tomasz Napierala bool found = false; 1909009ea47eSEdward Tomasz Napierala 1910009ea47eSEdward Tomasz Napierala iscsi_sanitize_session_conf(&isr->isr_conf); 1911009ea47eSEdward Tomasz Napierala 1912009ea47eSEdward Tomasz Napierala sx_xlock(&sc->sc_lock); 1913009ea47eSEdward Tomasz Napierala TAILQ_FOREACH_SAFE(is, &sc->sc_sessions, is_next, tmp) { 1914009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1915009ea47eSEdward Tomasz Napierala if (iscsi_session_conf_matches(is->is_id, &is->is_conf, 1916009ea47eSEdward Tomasz Napierala isr->isr_session_id, &isr->isr_conf)) { 1917009ea47eSEdward Tomasz Napierala found = true; 1918009ea47eSEdward Tomasz Napierala iscsi_session_logout(is); 1919009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1920009ea47eSEdward Tomasz Napierala } 1921009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1922009ea47eSEdward Tomasz Napierala } 1923009ea47eSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 1924009ea47eSEdward Tomasz Napierala 1925009ea47eSEdward Tomasz Napierala if (!found) 1926009ea47eSEdward Tomasz Napierala return (ESRCH); 1927009ea47eSEdward Tomasz Napierala 1928009ea47eSEdward Tomasz Napierala return (0); 1929009ea47eSEdward Tomasz Napierala } 1930009ea47eSEdward Tomasz Napierala 1931009ea47eSEdward Tomasz Napierala static int 1932009ea47eSEdward Tomasz Napierala iscsi_ioctl_session_list(struct iscsi_softc *sc, struct iscsi_session_list *isl) 1933009ea47eSEdward Tomasz Napierala { 1934009ea47eSEdward Tomasz Napierala int error; 1935009ea47eSEdward Tomasz Napierala unsigned int i = 0; 1936009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1937009ea47eSEdward Tomasz Napierala struct iscsi_session_state iss; 1938009ea47eSEdward Tomasz Napierala 1939009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1940009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1941009ea47eSEdward Tomasz Napierala if (i >= isl->isl_nentries) { 1942009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1943009ea47eSEdward Tomasz Napierala return (EMSGSIZE); 1944009ea47eSEdward Tomasz Napierala } 1945009ea47eSEdward Tomasz Napierala memset(&iss, 0, sizeof(iss)); 1946009ea47eSEdward Tomasz Napierala memcpy(&iss.iss_conf, &is->is_conf, sizeof(iss.iss_conf)); 1947009ea47eSEdward Tomasz Napierala iss.iss_id = is->is_id; 1948009ea47eSEdward Tomasz Napierala strlcpy(iss.iss_target_alias, is->is_target_alias, sizeof(iss.iss_target_alias)); 1949009ea47eSEdward Tomasz Napierala strlcpy(iss.iss_reason, is->is_reason, sizeof(iss.iss_reason)); 195082babffbSEdward Tomasz Napierala strlcpy(iss.iss_offload, is->is_conn->ic_offload, sizeof(iss.iss_offload)); 1951009ea47eSEdward Tomasz Napierala 1952009ea47eSEdward Tomasz Napierala if (is->is_conn->ic_header_crc32c) 1953009ea47eSEdward Tomasz Napierala iss.iss_header_digest = ISCSI_DIGEST_CRC32C; 1954009ea47eSEdward Tomasz Napierala else 1955009ea47eSEdward Tomasz Napierala iss.iss_header_digest = ISCSI_DIGEST_NONE; 1956009ea47eSEdward Tomasz Napierala 1957009ea47eSEdward Tomasz Napierala if (is->is_conn->ic_data_crc32c) 1958009ea47eSEdward Tomasz Napierala iss.iss_data_digest = ISCSI_DIGEST_CRC32C; 1959009ea47eSEdward Tomasz Napierala else 1960009ea47eSEdward Tomasz Napierala iss.iss_data_digest = ISCSI_DIGEST_NONE; 1961009ea47eSEdward Tomasz Napierala 196297b84d34SNavdeep Parhar iss.iss_max_send_data_segment_length = 1963*0cc7d64aSJohn Baldwin is->is_conn->ic_max_send_data_segment_length; 196497b84d34SNavdeep Parhar iss.iss_max_recv_data_segment_length = 1965*0cc7d64aSJohn Baldwin is->is_conn->ic_max_recv_data_segment_length; 19664e5408f1SEdward Tomasz Napierala iss.iss_max_burst_length = is->is_max_burst_length; 19674e5408f1SEdward Tomasz Napierala iss.iss_first_burst_length = is->is_first_burst_length; 1968009ea47eSEdward Tomasz Napierala iss.iss_immediate_data = is->is_immediate_data; 1969009ea47eSEdward Tomasz Napierala iss.iss_connected = is->is_connected; 1970009ea47eSEdward Tomasz Napierala 1971009ea47eSEdward Tomasz Napierala error = copyout(&iss, isl->isl_pstates + i, sizeof(iss)); 1972009ea47eSEdward Tomasz Napierala if (error != 0) { 1973009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1974009ea47eSEdward Tomasz Napierala return (error); 1975009ea47eSEdward Tomasz Napierala } 1976009ea47eSEdward Tomasz Napierala i++; 1977009ea47eSEdward Tomasz Napierala } 1978009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1979009ea47eSEdward Tomasz Napierala 1980009ea47eSEdward Tomasz Napierala isl->isl_nentries = i; 1981009ea47eSEdward Tomasz Napierala 1982009ea47eSEdward Tomasz Napierala return (0); 1983009ea47eSEdward Tomasz Napierala } 1984009ea47eSEdward Tomasz Napierala 1985009ea47eSEdward Tomasz Napierala static int 198651be90b5SEdward Tomasz Napierala iscsi_ioctl_session_modify(struct iscsi_softc *sc, 198751be90b5SEdward Tomasz Napierala struct iscsi_session_modify *ism) 198851be90b5SEdward Tomasz Napierala { 198951be90b5SEdward Tomasz Napierala struct iscsi_session *is; 19908ff2372aSEdward Tomasz Napierala const struct iscsi_session *is2; 199151be90b5SEdward Tomasz Napierala 199251be90b5SEdward Tomasz Napierala iscsi_sanitize_session_conf(&ism->ism_conf); 199351be90b5SEdward Tomasz Napierala if (iscsi_valid_session_conf(&ism->ism_conf) == false) 199451be90b5SEdward Tomasz Napierala return (EINVAL); 199551be90b5SEdward Tomasz Napierala 199651be90b5SEdward Tomasz Napierala sx_xlock(&sc->sc_lock); 199751be90b5SEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 199851be90b5SEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 19998ff2372aSEdward Tomasz Napierala if (is->is_id == ism->ism_session_id) { 20008ff2372aSEdward Tomasz Napierala /* Note that the session remains locked. */ 200151be90b5SEdward Tomasz Napierala break; 20028ff2372aSEdward Tomasz Napierala } 200351be90b5SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 200451be90b5SEdward Tomasz Napierala } 200551be90b5SEdward Tomasz Napierala if (is == NULL) { 200651be90b5SEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 200751be90b5SEdward Tomasz Napierala return (ESRCH); 200851be90b5SEdward Tomasz Napierala } 20098ff2372aSEdward Tomasz Napierala 20108ff2372aSEdward Tomasz Napierala /* 20118ff2372aSEdward Tomasz Napierala * Prevent duplicates. 20128ff2372aSEdward Tomasz Napierala */ 20138ff2372aSEdward Tomasz Napierala TAILQ_FOREACH(is2, &sc->sc_sessions, is_next) { 20148ff2372aSEdward Tomasz Napierala if (is == is2) 20158ff2372aSEdward Tomasz Napierala continue; 20168ff2372aSEdward Tomasz Napierala 20178ff2372aSEdward Tomasz Napierala if (!!ism->ism_conf.isc_discovery != 20188ff2372aSEdward Tomasz Napierala !!is2->is_conf.isc_discovery) 20198ff2372aSEdward Tomasz Napierala continue; 20208ff2372aSEdward Tomasz Napierala 20218ff2372aSEdward Tomasz Napierala if (strcmp(ism->ism_conf.isc_target_addr, 20228ff2372aSEdward Tomasz Napierala is2->is_conf.isc_target_addr) != 0) 20238ff2372aSEdward Tomasz Napierala continue; 20248ff2372aSEdward Tomasz Napierala 20258ff2372aSEdward Tomasz Napierala if (ism->ism_conf.isc_discovery == 0 && 20268ff2372aSEdward Tomasz Napierala strcmp(ism->ism_conf.isc_target, 20278ff2372aSEdward Tomasz Napierala is2->is_conf.isc_target) != 0) 20288ff2372aSEdward Tomasz Napierala continue; 20298ff2372aSEdward Tomasz Napierala 20308ff2372aSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 20318ff2372aSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 20328ff2372aSEdward Tomasz Napierala return (EBUSY); 20338ff2372aSEdward Tomasz Napierala } 20348ff2372aSEdward Tomasz Napierala 203551be90b5SEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 203651be90b5SEdward Tomasz Napierala 203751be90b5SEdward Tomasz Napierala memcpy(&is->is_conf, &ism->ism_conf, sizeof(is->is_conf)); 203851be90b5SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 203951be90b5SEdward Tomasz Napierala 204051be90b5SEdward Tomasz Napierala iscsi_session_reconnect(is); 204151be90b5SEdward Tomasz Napierala 204251be90b5SEdward Tomasz Napierala return (0); 204351be90b5SEdward Tomasz Napierala } 204451be90b5SEdward Tomasz Napierala 204551be90b5SEdward Tomasz Napierala static int 2046009ea47eSEdward Tomasz Napierala iscsi_ioctl(struct cdev *dev, u_long cmd, caddr_t arg, int mode, 2047009ea47eSEdward Tomasz Napierala struct thread *td) 2048009ea47eSEdward Tomasz Napierala { 2049009ea47eSEdward Tomasz Napierala struct iscsi_softc *sc; 2050009ea47eSEdward Tomasz Napierala 2051009ea47eSEdward Tomasz Napierala sc = dev->si_drv1; 2052009ea47eSEdward Tomasz Napierala 2053009ea47eSEdward Tomasz Napierala switch (cmd) { 2054009ea47eSEdward Tomasz Napierala case ISCSIDWAIT: 2055009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_wait(sc, 2056009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_request *)arg)); 2057009ea47eSEdward Tomasz Napierala case ISCSIDHANDOFF: 2058009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_handoff(sc, 2059009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_handoff *)arg)); 2060009ea47eSEdward Tomasz Napierala case ISCSIDFAIL: 2061009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_fail(sc, 2062009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_fail *)arg)); 2063009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 2064009ea47eSEdward Tomasz Napierala case ISCSIDCONNECT: 2065009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_connect(sc, 2066009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_connect *)arg)); 2067009ea47eSEdward Tomasz Napierala case ISCSIDSEND: 2068009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_send(sc, 2069009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_send *)arg)); 2070009ea47eSEdward Tomasz Napierala case ISCSIDRECEIVE: 2071009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_receive(sc, 2072009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_receive *)arg)); 2073009ea47eSEdward Tomasz Napierala #endif /* ICL_KERNEL_PROXY */ 2074009ea47eSEdward Tomasz Napierala case ISCSISADD: 2075009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_session_add(sc, 2076009ea47eSEdward Tomasz Napierala (struct iscsi_session_add *)arg)); 2077009ea47eSEdward Tomasz Napierala case ISCSISREMOVE: 2078009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_session_remove(sc, 2079009ea47eSEdward Tomasz Napierala (struct iscsi_session_remove *)arg)); 2080009ea47eSEdward Tomasz Napierala case ISCSISLIST: 2081009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_session_list(sc, 2082009ea47eSEdward Tomasz Napierala (struct iscsi_session_list *)arg)); 208351be90b5SEdward Tomasz Napierala case ISCSISMODIFY: 208451be90b5SEdward Tomasz Napierala return (iscsi_ioctl_session_modify(sc, 208551be90b5SEdward Tomasz Napierala (struct iscsi_session_modify *)arg)); 2086009ea47eSEdward Tomasz Napierala default: 2087009ea47eSEdward Tomasz Napierala return (EINVAL); 2088009ea47eSEdward Tomasz Napierala } 2089009ea47eSEdward Tomasz Napierala } 2090009ea47eSEdward Tomasz Napierala 2091009ea47eSEdward Tomasz Napierala static struct iscsi_outstanding * 2092009ea47eSEdward Tomasz Napierala iscsi_outstanding_find(struct iscsi_session *is, uint32_t initiator_task_tag) 2093009ea47eSEdward Tomasz Napierala { 2094009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io; 2095009ea47eSEdward Tomasz Napierala 2096009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 2097009ea47eSEdward Tomasz Napierala 2098009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(io, &is->is_outstanding, io_next) { 2099009ea47eSEdward Tomasz Napierala if (io->io_initiator_task_tag == initiator_task_tag) 2100009ea47eSEdward Tomasz Napierala return (io); 2101009ea47eSEdward Tomasz Napierala } 2102009ea47eSEdward Tomasz Napierala return (NULL); 2103009ea47eSEdward Tomasz Napierala } 2104009ea47eSEdward Tomasz Napierala 2105aa75114cSAlexander Motin static struct iscsi_outstanding * 2106aa75114cSAlexander Motin iscsi_outstanding_find_ccb(struct iscsi_session *is, union ccb *ccb) 2107aa75114cSAlexander Motin { 2108aa75114cSAlexander Motin struct iscsi_outstanding *io; 2109aa75114cSAlexander Motin 2110aa75114cSAlexander Motin ISCSI_SESSION_LOCK_ASSERT(is); 2111aa75114cSAlexander Motin 2112aa75114cSAlexander Motin TAILQ_FOREACH(io, &is->is_outstanding, io_next) { 2113aa75114cSAlexander Motin if (io->io_ccb == ccb) 2114aa75114cSAlexander Motin return (io); 2115aa75114cSAlexander Motin } 2116aa75114cSAlexander Motin return (NULL); 2117aa75114cSAlexander Motin } 2118aa75114cSAlexander Motin 2119aa75114cSAlexander Motin static struct iscsi_outstanding * 2120604c023fSEdward Tomasz Napierala iscsi_outstanding_add(struct iscsi_session *is, struct icl_pdu *request, 21217a03d007SEdward Tomasz Napierala union ccb *ccb, uint32_t *initiator_task_tagp) 2122009ea47eSEdward Tomasz Napierala { 2123009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io; 21247a03d007SEdward Tomasz Napierala int error; 2125009ea47eSEdward Tomasz Napierala 2126009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 2127009ea47eSEdward Tomasz Napierala 2128009ea47eSEdward Tomasz Napierala io = uma_zalloc(iscsi_outstanding_zone, M_NOWAIT | M_ZERO); 2129009ea47eSEdward Tomasz Napierala if (io == NULL) { 21307a03d007SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate %zd bytes", 21317a03d007SEdward Tomasz Napierala sizeof(*io)); 2132aa75114cSAlexander Motin return (NULL); 2133009ea47eSEdward Tomasz Napierala } 21347a03d007SEdward Tomasz Napierala 2135604c023fSEdward Tomasz Napierala error = icl_conn_task_setup(is->is_conn, request, &ccb->csio, 21367a03d007SEdward Tomasz Napierala initiator_task_tagp, &io->io_icl_prv); 21377a03d007SEdward Tomasz Napierala if (error != 0) { 21387a03d007SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, 21397a03d007SEdward Tomasz Napierala "icl_conn_task_setup() failed with error %d", error); 21407a03d007SEdward Tomasz Napierala uma_zfree(iscsi_outstanding_zone, io); 21417a03d007SEdward Tomasz Napierala return (NULL); 21427a03d007SEdward Tomasz Napierala } 21437a03d007SEdward Tomasz Napierala 21447a03d007SEdward Tomasz Napierala KASSERT(iscsi_outstanding_find(is, *initiator_task_tagp) == NULL, 21457a03d007SEdward Tomasz Napierala ("initiator_task_tag 0x%x already added", *initiator_task_tagp)); 21467a03d007SEdward Tomasz Napierala 21477a03d007SEdward Tomasz Napierala io->io_initiator_task_tag = *initiator_task_tagp; 2148009ea47eSEdward Tomasz Napierala io->io_ccb = ccb; 2149009ea47eSEdward Tomasz Napierala TAILQ_INSERT_TAIL(&is->is_outstanding, io, io_next); 2150aa75114cSAlexander Motin return (io); 2151009ea47eSEdward Tomasz Napierala } 2152009ea47eSEdward Tomasz Napierala 2153009ea47eSEdward Tomasz Napierala static void 2154009ea47eSEdward Tomasz Napierala iscsi_outstanding_remove(struct iscsi_session *is, struct iscsi_outstanding *io) 2155009ea47eSEdward Tomasz Napierala { 2156009ea47eSEdward Tomasz Napierala 2157009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 2158009ea47eSEdward Tomasz Napierala 21597a03d007SEdward Tomasz Napierala icl_conn_task_done(is->is_conn, io->io_icl_prv); 2160009ea47eSEdward Tomasz Napierala TAILQ_REMOVE(&is->is_outstanding, io, io_next); 2161009ea47eSEdward Tomasz Napierala uma_zfree(iscsi_outstanding_zone, io); 2162009ea47eSEdward Tomasz Napierala } 2163009ea47eSEdward Tomasz Napierala 2164009ea47eSEdward Tomasz Napierala static void 2165aa75114cSAlexander Motin iscsi_action_abort(struct iscsi_session *is, union ccb *ccb) 2166aa75114cSAlexander Motin { 2167aa75114cSAlexander Motin struct icl_pdu *request; 2168aa75114cSAlexander Motin struct iscsi_bhs_task_management_request *bhstmr; 2169aa75114cSAlexander Motin struct ccb_abort *cab = &ccb->cab; 2170aa75114cSAlexander Motin struct iscsi_outstanding *io, *aio; 21717a03d007SEdward Tomasz Napierala uint32_t initiator_task_tag; 2172aa75114cSAlexander Motin 2173aa75114cSAlexander Motin ISCSI_SESSION_LOCK_ASSERT(is); 2174aa75114cSAlexander Motin 2175aa75114cSAlexander Motin #if 0 2176aa75114cSAlexander Motin KASSERT(is->is_login_phase == false, ("%s called during Login Phase", __func__)); 2177aa75114cSAlexander Motin #else 2178aa75114cSAlexander Motin if (is->is_login_phase) { 2179aa75114cSAlexander Motin ccb->ccb_h.status = CAM_REQ_ABORTED; 2180aa75114cSAlexander Motin xpt_done(ccb); 2181aa75114cSAlexander Motin return; 2182aa75114cSAlexander Motin } 2183aa75114cSAlexander Motin #endif 2184aa75114cSAlexander Motin 2185aa75114cSAlexander Motin aio = iscsi_outstanding_find_ccb(is, cab->abort_ccb); 2186aa75114cSAlexander Motin if (aio == NULL) { 2187aa75114cSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP; 2188aa75114cSAlexander Motin xpt_done(ccb); 2189aa75114cSAlexander Motin return; 2190aa75114cSAlexander Motin } 2191aa75114cSAlexander Motin 2192d2d52b00SEdward Tomasz Napierala request = icl_pdu_new(is->is_conn, M_NOWAIT); 2193aa75114cSAlexander Motin if (request == NULL) { 2194aa75114cSAlexander Motin ccb->ccb_h.status = CAM_RESRC_UNAVAIL; 2195aa75114cSAlexander Motin xpt_done(ccb); 2196aa75114cSAlexander Motin return; 2197aa75114cSAlexander Motin } 2198aa75114cSAlexander Motin 21997a03d007SEdward Tomasz Napierala initiator_task_tag = is->is_initiator_task_tag++; 22009bee9a98SAlexander Motin if (initiator_task_tag == 0xffffffff) 22019bee9a98SAlexander Motin initiator_task_tag = is->is_initiator_task_tag++; 2202aa75114cSAlexander Motin 2203604c023fSEdward Tomasz Napierala io = iscsi_outstanding_add(is, request, NULL, &initiator_task_tag); 2204aa75114cSAlexander Motin if (io == NULL) { 2205aa75114cSAlexander Motin icl_pdu_free(request); 2206aa75114cSAlexander Motin ccb->ccb_h.status = CAM_RESRC_UNAVAIL; 2207aa75114cSAlexander Motin xpt_done(ccb); 2208aa75114cSAlexander Motin return; 2209aa75114cSAlexander Motin } 22103dd2a7a5SAlexander Motin io->io_referenced_task_tag = aio->io_initiator_task_tag; 22117a03d007SEdward Tomasz Napierala 22127a03d007SEdward Tomasz Napierala bhstmr = (struct iscsi_bhs_task_management_request *)request->ip_bhs; 22137a03d007SEdward Tomasz Napierala bhstmr->bhstmr_opcode = ISCSI_BHS_OPCODE_TASK_REQUEST; 22147a03d007SEdward Tomasz Napierala bhstmr->bhstmr_function = 0x80 | BHSTMR_FUNCTION_ABORT_TASK; 22157a03d007SEdward Tomasz Napierala bhstmr->bhstmr_lun = htobe64(CAM_EXTLUN_BYTE_SWIZZLE(ccb->ccb_h.target_lun)); 22167a03d007SEdward Tomasz Napierala bhstmr->bhstmr_initiator_task_tag = initiator_task_tag; 22177a03d007SEdward Tomasz Napierala bhstmr->bhstmr_referenced_task_tag = aio->io_initiator_task_tag; 22187a03d007SEdward Tomasz Napierala 2219aa75114cSAlexander Motin iscsi_pdu_queue_locked(request); 2220aa75114cSAlexander Motin } 2221aa75114cSAlexander Motin 2222aa75114cSAlexander Motin static void 2223009ea47eSEdward Tomasz Napierala iscsi_action_scsiio(struct iscsi_session *is, union ccb *ccb) 2224009ea47eSEdward Tomasz Napierala { 2225009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 2226009ea47eSEdward Tomasz Napierala struct iscsi_bhs_scsi_command *bhssc; 2227009ea47eSEdward Tomasz Napierala struct ccb_scsiio *csio; 2228aa75114cSAlexander Motin struct iscsi_outstanding *io; 2229009ea47eSEdward Tomasz Napierala size_t len; 22307a03d007SEdward Tomasz Napierala uint32_t initiator_task_tag; 2231009ea47eSEdward Tomasz Napierala int error; 2232009ea47eSEdward Tomasz Napierala 2233009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 2234009ea47eSEdward Tomasz Napierala 2235009ea47eSEdward Tomasz Napierala #if 0 2236009ea47eSEdward Tomasz Napierala KASSERT(is->is_login_phase == false, ("%s called during Login Phase", __func__)); 2237009ea47eSEdward Tomasz Napierala #else 2238009ea47eSEdward Tomasz Napierala if (is->is_login_phase) { 2239009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "called during login phase"); 2240009ea47eSEdward Tomasz Napierala if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 2241009ea47eSEdward Tomasz Napierala xpt_freeze_devq(ccb->ccb_h.path, 1); 2242009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 2243009ea47eSEdward Tomasz Napierala } 2244009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_REQ_ABORTED | CAM_DEV_QFRZN; 2245009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2246009ea47eSEdward Tomasz Napierala return; 2247009ea47eSEdward Tomasz Napierala } 2248009ea47eSEdward Tomasz Napierala #endif 2249009ea47eSEdward Tomasz Napierala 2250d2d52b00SEdward Tomasz Napierala request = icl_pdu_new(is->is_conn, M_NOWAIT); 2251009ea47eSEdward Tomasz Napierala if (request == NULL) { 2252009ea47eSEdward Tomasz Napierala if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 2253009ea47eSEdward Tomasz Napierala xpt_freeze_devq(ccb->ccb_h.path, 1); 2254009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 2255009ea47eSEdward Tomasz Napierala } 2256009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_RESRC_UNAVAIL | CAM_DEV_QFRZN; 2257009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2258009ea47eSEdward Tomasz Napierala return; 2259009ea47eSEdward Tomasz Napierala } 2260009ea47eSEdward Tomasz Napierala 22617a03d007SEdward Tomasz Napierala initiator_task_tag = is->is_initiator_task_tag++; 22629bee9a98SAlexander Motin if (initiator_task_tag == 0xffffffff) 22639bee9a98SAlexander Motin initiator_task_tag = is->is_initiator_task_tag++; 22649bee9a98SAlexander Motin 2265604c023fSEdward Tomasz Napierala io = iscsi_outstanding_add(is, request, ccb, &initiator_task_tag); 22667a03d007SEdward Tomasz Napierala if (io == NULL) { 22677a03d007SEdward Tomasz Napierala icl_pdu_free(request); 22687a03d007SEdward Tomasz Napierala if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 22697a03d007SEdward Tomasz Napierala xpt_freeze_devq(ccb->ccb_h.path, 1); 22707a03d007SEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 22717a03d007SEdward Tomasz Napierala } 22727a03d007SEdward Tomasz Napierala ccb->ccb_h.status = CAM_RESRC_UNAVAIL | CAM_DEV_QFRZN; 22737a03d007SEdward Tomasz Napierala xpt_done(ccb); 22747a03d007SEdward Tomasz Napierala return; 22757a03d007SEdward Tomasz Napierala } 22767a03d007SEdward Tomasz Napierala 2277009ea47eSEdward Tomasz Napierala csio = &ccb->csio; 2278009ea47eSEdward Tomasz Napierala bhssc = (struct iscsi_bhs_scsi_command *)request->ip_bhs; 2279009ea47eSEdward Tomasz Napierala bhssc->bhssc_opcode = ISCSI_BHS_OPCODE_SCSI_COMMAND; 2280009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_F; 2281009ea47eSEdward Tomasz Napierala switch (csio->ccb_h.flags & CAM_DIR_MASK) { 2282009ea47eSEdward Tomasz Napierala case CAM_DIR_IN: 2283009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_R; 2284009ea47eSEdward Tomasz Napierala break; 2285009ea47eSEdward Tomasz Napierala case CAM_DIR_OUT: 2286009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_W; 2287009ea47eSEdward Tomasz Napierala break; 2288009ea47eSEdward Tomasz Napierala } 2289009ea47eSEdward Tomasz Napierala 2290462cf3baSAlexander Motin if ((ccb->ccb_h.flags & CAM_TAG_ACTION_VALID) != 0) { 2291009ea47eSEdward Tomasz Napierala switch (csio->tag_action) { 2292009ea47eSEdward Tomasz Napierala case MSG_HEAD_OF_Q_TAG: 2293009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_HOQ; 2294009ea47eSEdward Tomasz Napierala break; 2295009ea47eSEdward Tomasz Napierala case MSG_ORDERED_Q_TAG: 2296009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_ORDERED; 2297009ea47eSEdward Tomasz Napierala break; 2298009ea47eSEdward Tomasz Napierala case MSG_ACA_TASK: 2299009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_ACA; 2300009ea47eSEdward Tomasz Napierala break; 2301009ea47eSEdward Tomasz Napierala case MSG_SIMPLE_Q_TAG: 2302009ea47eSEdward Tomasz Napierala default: 2303009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_SIMPLE; 2304009ea47eSEdward Tomasz Napierala break; 2305009ea47eSEdward Tomasz Napierala } 2306462cf3baSAlexander Motin } else 2307462cf3baSAlexander Motin bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_UNTAGGED; 2308009ea47eSEdward Tomasz Napierala 230988364968SAlexander Motin if (is->is_protocol_level >= 2) { 231088364968SAlexander Motin bhssc->bhssc_pri = (csio->priority << BHSSC_PRI_SHIFT) & 231188364968SAlexander Motin BHSSC_PRI_MASK; 231288364968SAlexander Motin } 231388364968SAlexander Motin 2314a9f2f291SEdward Tomasz Napierala bhssc->bhssc_lun = htobe64(CAM_EXTLUN_BYTE_SWIZZLE(ccb->ccb_h.target_lun)); 23157a03d007SEdward Tomasz Napierala bhssc->bhssc_initiator_task_tag = initiator_task_tag; 2316009ea47eSEdward Tomasz Napierala bhssc->bhssc_expected_data_transfer_length = htonl(csio->dxfer_len); 2317009ea47eSEdward Tomasz Napierala KASSERT(csio->cdb_len <= sizeof(bhssc->bhssc_cdb), 2318009ea47eSEdward Tomasz Napierala ("unsupported CDB size %zd", (size_t)csio->cdb_len)); 2319009ea47eSEdward Tomasz Napierala 2320009ea47eSEdward Tomasz Napierala if (csio->ccb_h.flags & CAM_CDB_POINTER) 2321009ea47eSEdward Tomasz Napierala memcpy(&bhssc->bhssc_cdb, csio->cdb_io.cdb_ptr, csio->cdb_len); 2322009ea47eSEdward Tomasz Napierala else 2323009ea47eSEdward Tomasz Napierala memcpy(&bhssc->bhssc_cdb, csio->cdb_io.cdb_bytes, csio->cdb_len); 2324009ea47eSEdward Tomasz Napierala 2325009ea47eSEdward Tomasz Napierala if (is->is_immediate_data && 2326009ea47eSEdward Tomasz Napierala (csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT) { 2327009ea47eSEdward Tomasz Napierala len = csio->dxfer_len; 2328009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "adding %zd of immediate data", len); 2329009ea47eSEdward Tomasz Napierala if (len > is->is_first_burst_length) { 233097b84d34SNavdeep Parhar ISCSI_SESSION_DEBUG(is, "len %zd -> %d", len, is->is_first_burst_length); 2331009ea47eSEdward Tomasz Napierala len = is->is_first_burst_length; 2332009ea47eSEdward Tomasz Napierala } 2333*0cc7d64aSJohn Baldwin if (len > is->is_conn->ic_max_send_data_segment_length) { 233497b84d34SNavdeep Parhar ISCSI_SESSION_DEBUG(is, "len %zd -> %d", len, 2335*0cc7d64aSJohn Baldwin is->is_conn->ic_max_send_data_segment_length); 2336*0cc7d64aSJohn Baldwin len = is->is_conn->ic_max_send_data_segment_length; 23373f9e1172SAlexander Motin } 2338009ea47eSEdward Tomasz Napierala 2339009ea47eSEdward Tomasz Napierala error = icl_pdu_append_data(request, csio->data_ptr, len, M_NOWAIT); 2340009ea47eSEdward Tomasz Napierala if (error != 0) { 2341938bcb04SEdward Tomasz Napierala iscsi_outstanding_remove(is, io); 2342009ea47eSEdward Tomasz Napierala icl_pdu_free(request); 2343009ea47eSEdward Tomasz Napierala if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 2344009ea47eSEdward Tomasz Napierala xpt_freeze_devq(ccb->ccb_h.path, 1); 2345009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 2346009ea47eSEdward Tomasz Napierala } 2347009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_RESRC_UNAVAIL | CAM_DEV_QFRZN; 2348009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2349009ea47eSEdward Tomasz Napierala return; 2350009ea47eSEdward Tomasz Napierala } 2351009ea47eSEdward Tomasz Napierala } 2352009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(request); 2353009ea47eSEdward Tomasz Napierala } 2354009ea47eSEdward Tomasz Napierala 2355009ea47eSEdward Tomasz Napierala static void 2356009ea47eSEdward Tomasz Napierala iscsi_action(struct cam_sim *sim, union ccb *ccb) 2357009ea47eSEdward Tomasz Napierala { 2358009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 2359009ea47eSEdward Tomasz Napierala 2360009ea47eSEdward Tomasz Napierala is = cam_sim_softc(sim); 2361009ea47eSEdward Tomasz Napierala 2362009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 2363009ea47eSEdward Tomasz Napierala 2364f1f12e40SEdward Tomasz Napierala if (is->is_terminating || 2365f1f12e40SEdward Tomasz Napierala (is->is_connected == false && fail_on_disconnection)) { 2366009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_DEV_NOT_THERE; 2367009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2368009ea47eSEdward Tomasz Napierala return; 2369009ea47eSEdward Tomasz Napierala } 2370009ea47eSEdward Tomasz Napierala 2371186bcdaaSEdward Tomasz Napierala /* 2372186bcdaaSEdward Tomasz Napierala * Make sure CAM doesn't sneak in a CCB just after freezing the queue. 2373186bcdaaSEdward Tomasz Napierala */ 2374186bcdaaSEdward Tomasz Napierala if (is->is_simq_frozen == true) { 2375186bcdaaSEdward Tomasz Napierala ccb->ccb_h.status &= ~(CAM_SIM_QUEUED | CAM_STATUS_MASK); 2376186bcdaaSEdward Tomasz Napierala ccb->ccb_h.status |= CAM_REQUEUE_REQ; 2377186bcdaaSEdward Tomasz Napierala /* Don't freeze the devq - the SIM queue is already frozen. */ 2378186bcdaaSEdward Tomasz Napierala xpt_done(ccb); 2379186bcdaaSEdward Tomasz Napierala return; 2380186bcdaaSEdward Tomasz Napierala } 2381186bcdaaSEdward Tomasz Napierala 2382009ea47eSEdward Tomasz Napierala switch (ccb->ccb_h.func_code) { 2383009ea47eSEdward Tomasz Napierala case XPT_PATH_INQ: 2384009ea47eSEdward Tomasz Napierala { 2385009ea47eSEdward Tomasz Napierala struct ccb_pathinq *cpi = &ccb->cpi; 2386009ea47eSEdward Tomasz Napierala 2387009ea47eSEdward Tomasz Napierala cpi->version_num = 1; 2388009ea47eSEdward Tomasz Napierala cpi->hba_inquiry = PI_TAG_ABLE; 2389009ea47eSEdward Tomasz Napierala cpi->target_sprt = 0; 2390a9f2f291SEdward Tomasz Napierala cpi->hba_misc = PIM_EXTLUNS; 23917deb68abSEdward Tomasz Napierala /* 23927deb68abSEdward Tomasz Napierala * XXX: It shouldn't ever be NULL; this could be turned 23937deb68abSEdward Tomasz Napierala * into a KASSERT eventually. 23947deb68abSEdward Tomasz Napierala */ 23957deb68abSEdward Tomasz Napierala if (is->is_conn == NULL) 23967deb68abSEdward Tomasz Napierala ISCSI_WARN("NULL conn"); 23977deb68abSEdward Tomasz Napierala else if (is->is_conn->ic_unmapped) 23987deb68abSEdward Tomasz Napierala cpi->hba_misc |= PIM_UNMAPPED; 2399009ea47eSEdward Tomasz Napierala cpi->hba_eng_cnt = 0; 2400009ea47eSEdward Tomasz Napierala cpi->max_target = 0; 240117cf3eb1SEdward Tomasz Napierala /* 240217cf3eb1SEdward Tomasz Napierala * Note that the variable below is only relevant for targets 240317cf3eb1SEdward Tomasz Napierala * that don't claim compliance with anything above SPC2, which 240417cf3eb1SEdward Tomasz Napierala * means they don't support REPORT_LUNS. 240517cf3eb1SEdward Tomasz Napierala */ 240617cf3eb1SEdward Tomasz Napierala cpi->max_lun = 255; 2407a9f2f291SEdward Tomasz Napierala cpi->initiator_id = ~0; 24087843bd03SEdward Tomasz Napierala strlcpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); 24097843bd03SEdward Tomasz Napierala strlcpy(cpi->hba_vid, "iSCSI", HBA_IDLEN); 24107843bd03SEdward Tomasz Napierala strlcpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); 2411009ea47eSEdward Tomasz Napierala cpi->unit_number = cam_sim_unit(sim); 2412009ea47eSEdward Tomasz Napierala cpi->bus_id = cam_sim_bus(sim); 2413009ea47eSEdward Tomasz Napierala cpi->base_transfer_speed = 150000; /* XXX */ 2414009ea47eSEdward Tomasz Napierala cpi->transport = XPORT_ISCSI; 2415009ea47eSEdward Tomasz Napierala cpi->transport_version = 0; 2416009ea47eSEdward Tomasz Napierala cpi->protocol = PROTO_SCSI; 2417009ea47eSEdward Tomasz Napierala cpi->protocol_version = SCSI_REV_SPC3; 2418cd853791SKonstantin Belousov cpi->maxio = maxphys; 2419009ea47eSEdward Tomasz Napierala cpi->ccb_h.status = CAM_REQ_CMP; 2420009ea47eSEdward Tomasz Napierala break; 2421009ea47eSEdward Tomasz Napierala } 2422462cf3baSAlexander Motin case XPT_GET_TRAN_SETTINGS: 2423462cf3baSAlexander Motin { 2424462cf3baSAlexander Motin struct ccb_trans_settings *cts; 2425462cf3baSAlexander Motin struct ccb_trans_settings_scsi *scsi; 2426462cf3baSAlexander Motin 2427462cf3baSAlexander Motin cts = &ccb->cts; 2428462cf3baSAlexander Motin scsi = &cts->proto_specific.scsi; 2429462cf3baSAlexander Motin 2430462cf3baSAlexander Motin cts->protocol = PROTO_SCSI; 2431462cf3baSAlexander Motin cts->protocol_version = SCSI_REV_SPC3; 2432462cf3baSAlexander Motin cts->transport = XPORT_ISCSI; 2433462cf3baSAlexander Motin cts->transport_version = 0; 2434462cf3baSAlexander Motin scsi->valid = CTS_SCSI_VALID_TQ; 2435462cf3baSAlexander Motin scsi->flags = CTS_SCSI_FLAGS_TAG_ENB; 2436462cf3baSAlexander Motin cts->ccb_h.status = CAM_REQ_CMP; 2437462cf3baSAlexander Motin break; 2438462cf3baSAlexander Motin } 2439009ea47eSEdward Tomasz Napierala case XPT_CALC_GEOMETRY: 2440009ea47eSEdward Tomasz Napierala cam_calc_geometry(&ccb->ccg, /*extended*/1); 2441009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_REQ_CMP; 2442009ea47eSEdward Tomasz Napierala break; 2443009ea47eSEdward Tomasz Napierala #if 0 2444009ea47eSEdward Tomasz Napierala /* 2445009ea47eSEdward Tomasz Napierala * XXX: What's the point? 2446009ea47eSEdward Tomasz Napierala */ 2447009ea47eSEdward Tomasz Napierala case XPT_RESET_BUS: 2448009ea47eSEdward Tomasz Napierala case XPT_TERM_IO: 2449009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "faking success for reset, abort, or term_io"); 2450009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_REQ_CMP; 2451009ea47eSEdward Tomasz Napierala break; 2452009ea47eSEdward Tomasz Napierala #endif 2453aa75114cSAlexander Motin case XPT_ABORT: 2454aa75114cSAlexander Motin iscsi_action_abort(is, ccb); 2455aa75114cSAlexander Motin return; 2456009ea47eSEdward Tomasz Napierala case XPT_SCSI_IO: 2457009ea47eSEdward Tomasz Napierala iscsi_action_scsiio(is, ccb); 2458009ea47eSEdward Tomasz Napierala return; 2459009ea47eSEdward Tomasz Napierala default: 2460009ea47eSEdward Tomasz Napierala #if 0 2461009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "got unsupported code 0x%x", ccb->ccb_h.func_code); 2462009ea47eSEdward Tomasz Napierala #endif 2463009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_FUNC_NOTAVAIL; 2464009ea47eSEdward Tomasz Napierala break; 2465009ea47eSEdward Tomasz Napierala } 2466009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2467009ea47eSEdward Tomasz Napierala } 2468009ea47eSEdward Tomasz Napierala 2469009ea47eSEdward Tomasz Napierala static void 2470481b36c6SSteven Hartland iscsi_terminate_sessions(struct iscsi_softc *sc) 2471009ea47eSEdward Tomasz Napierala { 2472009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 2473009ea47eSEdward Tomasz Napierala 2474481b36c6SSteven Hartland sx_slock(&sc->sc_lock); 2475481b36c6SSteven Hartland TAILQ_FOREACH(is, &sc->sc_sessions, is_next) 2476481b36c6SSteven Hartland iscsi_session_terminate(is); 2477481b36c6SSteven Hartland while(!TAILQ_EMPTY(&sc->sc_sessions)) { 2478481b36c6SSteven Hartland ISCSI_DEBUG("waiting for sessions to terminate"); 2479481b36c6SSteven Hartland cv_wait(&sc->sc_cv, &sc->sc_lock); 2480481b36c6SSteven Hartland } 2481481b36c6SSteven Hartland ISCSI_DEBUG("all sessions terminated"); 2482481b36c6SSteven Hartland sx_sunlock(&sc->sc_lock); 2483481b36c6SSteven Hartland } 2484481b36c6SSteven Hartland 2485481b36c6SSteven Hartland static void 2486481b36c6SSteven Hartland iscsi_shutdown_pre(struct iscsi_softc *sc) 2487481b36c6SSteven Hartland { 2488481b36c6SSteven Hartland struct iscsi_session *is; 2489481b36c6SSteven Hartland 2490481b36c6SSteven Hartland if (!fail_on_shutdown) 2491481b36c6SSteven Hartland return; 2492009ea47eSEdward Tomasz Napierala 2493e553ca49SEdward Tomasz Napierala /* 2494e553ca49SEdward Tomasz Napierala * If we have any sessions waiting for reconnection, request 2495e553ca49SEdward Tomasz Napierala * maintenance thread to fail them immediately instead of waiting 2496e553ca49SEdward Tomasz Napierala * for reconnect timeout. 2497481b36c6SSteven Hartland * 2498481b36c6SSteven Hartland * This prevents LUNs with mounted filesystems that are supported 2499481b36c6SSteven Hartland * by disconnected iSCSI sessions from hanging, however it will 2500481b36c6SSteven Hartland * fail all queued BIOs. 2501e553ca49SEdward Tomasz Napierala */ 2502481b36c6SSteven Hartland ISCSI_DEBUG("forcing failing all disconnected sessions due to shutdown"); 2503481b36c6SSteven Hartland 2504481b36c6SSteven Hartland fail_on_disconnection = 1; 2505481b36c6SSteven Hartland 2506009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 2507e553ca49SEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 2508e553ca49SEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 2509481b36c6SSteven Hartland if (!is->is_connected) { 2510481b36c6SSteven Hartland ISCSI_SESSION_DEBUG(is, "force failing disconnected session early"); 2511e553ca49SEdward Tomasz Napierala iscsi_session_reconnect(is); 2512481b36c6SSteven Hartland } 2513e553ca49SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 2514e553ca49SEdward Tomasz Napierala } 2515009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 2516009ea47eSEdward Tomasz Napierala } 2517009ea47eSEdward Tomasz Napierala 2518481b36c6SSteven Hartland static void 2519481b36c6SSteven Hartland iscsi_shutdown_post(struct iscsi_softc *sc) 2520481b36c6SSteven Hartland { 2521481b36c6SSteven Hartland 2522879e0604SMateusz Guzik if (!KERNEL_PANICKED()) { 2523481b36c6SSteven Hartland ISCSI_DEBUG("removing all sessions due to shutdown"); 2524481b36c6SSteven Hartland iscsi_terminate_sessions(sc); 2525481b36c6SSteven Hartland } 2526e54fb4ffSAndriy Gapon } 2527481b36c6SSteven Hartland 2528009ea47eSEdward Tomasz Napierala static int 2529009ea47eSEdward Tomasz Napierala iscsi_load(void) 2530009ea47eSEdward Tomasz Napierala { 2531009ea47eSEdward Tomasz Napierala int error; 2532009ea47eSEdward Tomasz Napierala 2533009ea47eSEdward Tomasz Napierala sc = malloc(sizeof(*sc), M_ISCSI, M_ZERO | M_WAITOK); 2534009ea47eSEdward Tomasz Napierala sx_init(&sc->sc_lock, "iscsi"); 2535009ea47eSEdward Tomasz Napierala TAILQ_INIT(&sc->sc_sessions); 2536009ea47eSEdward Tomasz Napierala cv_init(&sc->sc_cv, "iscsi_cv"); 2537009ea47eSEdward Tomasz Napierala 2538009ea47eSEdward Tomasz Napierala iscsi_outstanding_zone = uma_zcreate("iscsi_outstanding", 2539009ea47eSEdward Tomasz Napierala sizeof(struct iscsi_outstanding), NULL, NULL, NULL, NULL, 2540c28c09c1SEdward Tomasz Napierala UMA_ALIGN_PTR, 0); 2541009ea47eSEdward Tomasz Napierala 2542009ea47eSEdward Tomasz Napierala error = make_dev_p(MAKEDEV_CHECKNAME, &sc->sc_cdev, &iscsi_cdevsw, 2543009ea47eSEdward Tomasz Napierala NULL, UID_ROOT, GID_WHEEL, 0600, "iscsi"); 2544009ea47eSEdward Tomasz Napierala if (error != 0) { 2545009ea47eSEdward Tomasz Napierala ISCSI_WARN("failed to create device node, error %d", error); 2546009ea47eSEdward Tomasz Napierala return (error); 2547009ea47eSEdward Tomasz Napierala } 2548009ea47eSEdward Tomasz Napierala sc->sc_cdev->si_drv1 = sc; 2549009ea47eSEdward Tomasz Napierala 2550481b36c6SSteven Hartland sc->sc_shutdown_pre_eh = EVENTHANDLER_REGISTER(shutdown_pre_sync, 2551481b36c6SSteven Hartland iscsi_shutdown_pre, sc, SHUTDOWN_PRI_FIRST); 2552481b36c6SSteven Hartland /* 2553481b36c6SSteven Hartland * shutdown_post_sync needs to run after filesystem shutdown and before 2554481b36c6SSteven Hartland * CAM shutdown - otherwise when rebooting with an iSCSI session that is 2555481b36c6SSteven Hartland * disconnected but has outstanding requests, dashutdown() will hang on 2556481b36c6SSteven Hartland * cam_periph_runccb(). 2557481b36c6SSteven Hartland */ 2558481b36c6SSteven Hartland sc->sc_shutdown_post_eh = EVENTHANDLER_REGISTER(shutdown_post_sync, 2559481b36c6SSteven Hartland iscsi_shutdown_post, sc, SHUTDOWN_PRI_DEFAULT - 1); 2560009ea47eSEdward Tomasz Napierala 2561009ea47eSEdward Tomasz Napierala return (0); 2562009ea47eSEdward Tomasz Napierala } 2563009ea47eSEdward Tomasz Napierala 2564009ea47eSEdward Tomasz Napierala static int 2565009ea47eSEdward Tomasz Napierala iscsi_unload(void) 2566009ea47eSEdward Tomasz Napierala { 2567009ea47eSEdward Tomasz Napierala 256889df4847SJohn Baldwin /* Awaken any threads asleep in iscsi_ioctl(). */ 256989df4847SJohn Baldwin sx_xlock(&sc->sc_lock); 257089df4847SJohn Baldwin sc->sc_unloading = true; 257189df4847SJohn Baldwin cv_signal(&sc->sc_cv); 257289df4847SJohn Baldwin sx_xunlock(&sc->sc_lock); 257389df4847SJohn Baldwin 2574a667cf73SEdward Tomasz Napierala if (sc->sc_cdev != NULL) { 2575009ea47eSEdward Tomasz Napierala ISCSI_DEBUG("removing device node"); 2576009ea47eSEdward Tomasz Napierala destroy_dev(sc->sc_cdev); 2577009ea47eSEdward Tomasz Napierala ISCSI_DEBUG("device node removed"); 2578a667cf73SEdward Tomasz Napierala } 2579009ea47eSEdward Tomasz Napierala 2580481b36c6SSteven Hartland if (sc->sc_shutdown_pre_eh != NULL) 2581481b36c6SSteven Hartland EVENTHANDLER_DEREGISTER(shutdown_pre_sync, sc->sc_shutdown_pre_eh); 2582481b36c6SSteven Hartland if (sc->sc_shutdown_post_eh != NULL) 2583481b36c6SSteven Hartland EVENTHANDLER_DEREGISTER(shutdown_post_sync, sc->sc_shutdown_post_eh); 2584009ea47eSEdward Tomasz Napierala 2585481b36c6SSteven Hartland iscsi_terminate_sessions(sc); 2586009ea47eSEdward Tomasz Napierala 2587009ea47eSEdward Tomasz Napierala uma_zdestroy(iscsi_outstanding_zone); 2588009ea47eSEdward Tomasz Napierala sx_destroy(&sc->sc_lock); 2589009ea47eSEdward Tomasz Napierala cv_destroy(&sc->sc_cv); 2590009ea47eSEdward Tomasz Napierala free(sc, M_ISCSI); 2591009ea47eSEdward Tomasz Napierala return (0); 2592009ea47eSEdward Tomasz Napierala } 2593009ea47eSEdward Tomasz Napierala 2594009ea47eSEdward Tomasz Napierala static int 2595009ea47eSEdward Tomasz Napierala iscsi_quiesce(void) 2596009ea47eSEdward Tomasz Napierala { 2597009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 2598009ea47eSEdward Tomasz Napierala if (!TAILQ_EMPTY(&sc->sc_sessions)) { 2599009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 2600009ea47eSEdward Tomasz Napierala return (EBUSY); 2601009ea47eSEdward Tomasz Napierala } 2602009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 2603009ea47eSEdward Tomasz Napierala return (0); 2604009ea47eSEdward Tomasz Napierala } 2605009ea47eSEdward Tomasz Napierala 2606009ea47eSEdward Tomasz Napierala static int 2607009ea47eSEdward Tomasz Napierala iscsi_modevent(module_t mod, int what, void *arg) 2608009ea47eSEdward Tomasz Napierala { 2609009ea47eSEdward Tomasz Napierala int error; 2610009ea47eSEdward Tomasz Napierala 2611009ea47eSEdward Tomasz Napierala switch (what) { 2612009ea47eSEdward Tomasz Napierala case MOD_LOAD: 2613009ea47eSEdward Tomasz Napierala error = iscsi_load(); 2614009ea47eSEdward Tomasz Napierala break; 2615009ea47eSEdward Tomasz Napierala case MOD_UNLOAD: 2616009ea47eSEdward Tomasz Napierala error = iscsi_unload(); 2617009ea47eSEdward Tomasz Napierala break; 2618009ea47eSEdward Tomasz Napierala case MOD_QUIESCE: 2619009ea47eSEdward Tomasz Napierala error = iscsi_quiesce(); 2620009ea47eSEdward Tomasz Napierala break; 2621009ea47eSEdward Tomasz Napierala default: 2622009ea47eSEdward Tomasz Napierala error = EINVAL; 2623009ea47eSEdward Tomasz Napierala break; 2624009ea47eSEdward Tomasz Napierala } 2625009ea47eSEdward Tomasz Napierala return (error); 2626009ea47eSEdward Tomasz Napierala } 2627009ea47eSEdward Tomasz Napierala 2628009ea47eSEdward Tomasz Napierala moduledata_t iscsi_data = { 2629009ea47eSEdward Tomasz Napierala "iscsi", 2630009ea47eSEdward Tomasz Napierala iscsi_modevent, 2631009ea47eSEdward Tomasz Napierala 0 2632009ea47eSEdward Tomasz Napierala }; 2633009ea47eSEdward Tomasz Napierala 2634009ea47eSEdward Tomasz Napierala DECLARE_MODULE(iscsi, iscsi_data, SI_SUB_DRIVERS, SI_ORDER_MIDDLE); 2635009ea47eSEdward Tomasz Napierala MODULE_DEPEND(iscsi, cam, 1, 1, 1); 2636009ea47eSEdward Tomasz Napierala MODULE_DEPEND(iscsi, icl, 1, 1, 1); 2637