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; 1157*f0594f52SJohn Baldwin size_t off, len, max_send_data_segment_length, 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 1206*f0594f52SJohn Baldwin if (is->is_conn->ic_hw_isomax != 0) 1207*f0594f52SJohn Baldwin max_send_data_segment_length = is->is_conn->ic_hw_isomax; 1208*f0594f52SJohn Baldwin else 1209*f0594f52SJohn Baldwin max_send_data_segment_length = 1210*f0594f52SJohn Baldwin is->is_conn->ic_max_send_data_segment_length; 1211009ea47eSEdward Tomasz Napierala for (;;) { 1212009ea47eSEdward Tomasz Napierala len = total_len; 1213009ea47eSEdward Tomasz Napierala 1214*f0594f52SJohn Baldwin if (len > max_send_data_segment_length) 1215*f0594f52SJohn Baldwin len = max_send_data_segment_length; 1216009ea47eSEdward Tomasz Napierala 1217009ea47eSEdward Tomasz Napierala if (off + len > csio->dxfer_len) { 1218d43c9ec1SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target requested invalid " 1219d43c9ec1SEdward Tomasz Napierala "length/offset %zd, buffer is %d; reconnecting", 1220009ea47eSEdward Tomasz Napierala off + len, csio->dxfer_len); 1221009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1222009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1223009ea47eSEdward Tomasz Napierala return; 1224009ea47eSEdward Tomasz Napierala } 1225009ea47eSEdward Tomasz Napierala 1226d2d52b00SEdward Tomasz Napierala request = icl_pdu_new(response->ip_conn, M_NOWAIT); 1227009ea47eSEdward Tomasz Napierala if (request == NULL) { 1228009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1229009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1230009ea47eSEdward Tomasz Napierala return; 1231009ea47eSEdward Tomasz Napierala } 1232009ea47eSEdward Tomasz Napierala 1233009ea47eSEdward Tomasz Napierala bhsdo = (struct iscsi_bhs_data_out *)request->ip_bhs; 1234009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_opcode = ISCSI_BHS_OPCODE_SCSI_DATA_OUT; 1235009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_lun = bhsr2t->bhsr2t_lun; 1236009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_initiator_task_tag = 1237009ea47eSEdward Tomasz Napierala bhsr2t->bhsr2t_initiator_task_tag; 1238009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_target_transfer_tag = 1239009ea47eSEdward Tomasz Napierala bhsr2t->bhsr2t_target_transfer_tag; 1240*f0594f52SJohn Baldwin bhsdo->bhsdo_datasn = htonl(datasn); 1241009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_buffer_offset = htonl(off); 1242d43c9ec1SEdward Tomasz Napierala error = icl_pdu_append_data(request, csio->data_ptr + off, len, 1243d43c9ec1SEdward Tomasz Napierala M_NOWAIT); 1244009ea47eSEdward Tomasz Napierala if (error != 0) { 1245d43c9ec1SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate memory; " 1246d43c9ec1SEdward Tomasz Napierala "reconnecting"); 1247009ea47eSEdward Tomasz Napierala icl_pdu_free(request); 1248009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1249009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1250009ea47eSEdward Tomasz Napierala return; 1251009ea47eSEdward Tomasz Napierala } 1252009ea47eSEdward Tomasz Napierala 1253*f0594f52SJohn Baldwin datasn += howmany(len, 1254*f0594f52SJohn Baldwin is->is_conn->ic_max_send_data_segment_length); 1255009ea47eSEdward Tomasz Napierala off += len; 1256009ea47eSEdward Tomasz Napierala total_len -= len; 1257009ea47eSEdward Tomasz Napierala 1258009ea47eSEdward Tomasz Napierala if (total_len == 0) { 1259009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_flags |= BHSDO_FLAGS_F; 1260009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "setting F, off %zd", off); 1261009ea47eSEdward Tomasz Napierala } else { 1262009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "not finished, off %zd", off); 1263009ea47eSEdward Tomasz Napierala } 1264009ea47eSEdward Tomasz Napierala 1265009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(request); 1266009ea47eSEdward Tomasz Napierala 1267009ea47eSEdward Tomasz Napierala if (total_len == 0) 1268009ea47eSEdward Tomasz Napierala break; 1269009ea47eSEdward Tomasz Napierala } 1270009ea47eSEdward Tomasz Napierala 1271009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1272009ea47eSEdward Tomasz Napierala } 1273009ea47eSEdward Tomasz Napierala 1274009ea47eSEdward Tomasz Napierala static void 1275009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_async_message(struct icl_pdu *response) 1276009ea47eSEdward Tomasz Napierala { 1277009ea47eSEdward Tomasz Napierala struct iscsi_bhs_asynchronous_message *bhsam; 1278009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1279009ea47eSEdward Tomasz Napierala 1280009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 1281009ea47eSEdward Tomasz Napierala bhsam = (struct iscsi_bhs_asynchronous_message *)response->ip_bhs; 1282009ea47eSEdward Tomasz Napierala switch (bhsam->bhsam_async_event) { 1283009ea47eSEdward Tomasz Napierala case BHSAM_EVENT_TARGET_REQUESTS_LOGOUT: 1284009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target requests logout; removing session"); 1285009ea47eSEdward Tomasz Napierala iscsi_session_logout(is); 1286009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1287009ea47eSEdward Tomasz Napierala break; 1288009ea47eSEdward Tomasz Napierala case BHSAM_EVENT_TARGET_TERMINATES_CONNECTION: 12896960c4e1SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target indicates it will drop the connection"); 1290009ea47eSEdward Tomasz Napierala break; 1291009ea47eSEdward Tomasz Napierala case BHSAM_EVENT_TARGET_TERMINATES_SESSION: 12926960c4e1SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target indicates it will drop the session"); 1293009ea47eSEdward Tomasz Napierala break; 1294009ea47eSEdward Tomasz Napierala default: 1295009ea47eSEdward Tomasz Napierala /* 1296009ea47eSEdward Tomasz Napierala * XXX: Technically, we're obligated to also handle 1297009ea47eSEdward Tomasz Napierala * parameter renegotiation. 1298009ea47eSEdward Tomasz Napierala */ 1299009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "ignoring AsyncEvent %d", bhsam->bhsam_async_event); 1300009ea47eSEdward Tomasz Napierala break; 1301009ea47eSEdward Tomasz Napierala } 1302009ea47eSEdward Tomasz Napierala 1303009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1304009ea47eSEdward Tomasz Napierala } 1305009ea47eSEdward Tomasz Napierala 1306009ea47eSEdward Tomasz Napierala static void 1307009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_reject(struct icl_pdu *response) 1308009ea47eSEdward Tomasz Napierala { 1309009ea47eSEdward Tomasz Napierala struct iscsi_bhs_reject *bhsr; 1310009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1311009ea47eSEdward Tomasz Napierala 1312009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 1313009ea47eSEdward Tomasz Napierala bhsr = (struct iscsi_bhs_reject *)response->ip_bhs; 1314009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "received Reject PDU, reason 0x%x; protocol error?", 1315009ea47eSEdward Tomasz Napierala bhsr->bhsr_reason); 1316009ea47eSEdward Tomasz Napierala 1317009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1318009ea47eSEdward Tomasz Napierala } 1319009ea47eSEdward Tomasz Napierala 1320009ea47eSEdward Tomasz Napierala static int 1321009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_wait(struct iscsi_softc *sc, 1322009ea47eSEdward Tomasz Napierala struct iscsi_daemon_request *request) 1323009ea47eSEdward Tomasz Napierala { 1324009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 132597b84d34SNavdeep Parhar struct icl_drv_limits idl; 1326009ea47eSEdward Tomasz Napierala int error; 1327009ea47eSEdward Tomasz Napierala 1328009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1329009ea47eSEdward Tomasz Napierala for (;;) { 1330009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 13312be596adSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1332ba165a31SEdward Tomasz Napierala if (is->is_conf.isc_enable == 0 && 1333ba165a31SEdward Tomasz Napierala is->is_conf.isc_discovery == 0) { 1334ba165a31SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1335ba165a31SEdward Tomasz Napierala continue; 1336ba165a31SEdward Tomasz Napierala } 1337009ea47eSEdward Tomasz Napierala if (is->is_waiting_for_iscsid) 1338009ea47eSEdward Tomasz Napierala break; 13392be596adSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1340009ea47eSEdward Tomasz Napierala } 1341009ea47eSEdward Tomasz Napierala 1342009ea47eSEdward Tomasz Napierala if (is == NULL) { 134389df4847SJohn Baldwin if (sc->sc_unloading) { 134489df4847SJohn Baldwin sx_sunlock(&sc->sc_lock); 134589df4847SJohn Baldwin return (ENXIO); 134689df4847SJohn Baldwin } 134789df4847SJohn Baldwin 1348009ea47eSEdward Tomasz Napierala /* 1349009ea47eSEdward Tomasz Napierala * No session requires attention from iscsid(8); wait. 1350009ea47eSEdward Tomasz Napierala */ 1351009ea47eSEdward Tomasz Napierala error = cv_wait_sig(&sc->sc_cv, &sc->sc_lock); 1352009ea47eSEdward Tomasz Napierala if (error != 0) { 1353009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1354009ea47eSEdward Tomasz Napierala return (error); 1355009ea47eSEdward Tomasz Napierala } 1356009ea47eSEdward Tomasz Napierala continue; 1357009ea47eSEdward Tomasz Napierala } 1358009ea47eSEdward Tomasz Napierala 1359009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = false; 1360009ea47eSEdward Tomasz Napierala is->is_login_phase = true; 1361009ea47eSEdward Tomasz Napierala is->is_reason[0] = '\0'; 1362009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1363009ea47eSEdward Tomasz Napierala 1364009ea47eSEdward Tomasz Napierala request->idr_session_id = is->is_id; 1365ffe82e05SAlexander Motin memcpy(&request->idr_isid, &is->is_isid, 1366ffe82e05SAlexander Motin sizeof(request->idr_isid)); 1367ffe82e05SAlexander Motin request->idr_tsih = 0; /* New or reinstated session. */ 1368009ea47eSEdward Tomasz Napierala memcpy(&request->idr_conf, &is->is_conf, 1369009ea47eSEdward Tomasz Napierala sizeof(request->idr_conf)); 1370009ea47eSEdward Tomasz Napierala 137182babffbSEdward Tomasz Napierala error = icl_limits(is->is_conf.isc_offload, 137297b84d34SNavdeep Parhar is->is_conf.isc_iser, &idl); 137382babffbSEdward Tomasz Napierala if (error != 0) { 137482babffbSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "icl_limits for offload \"%s\" " 137582babffbSEdward Tomasz Napierala "failed with error %d", is->is_conf.isc_offload, 137682babffbSEdward Tomasz Napierala error); 137782babffbSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 137882babffbSEdward Tomasz Napierala return (error); 137982babffbSEdward Tomasz Napierala } 138097b84d34SNavdeep Parhar request->idr_limits.isl_max_recv_data_segment_length = 138197b84d34SNavdeep Parhar idl.idl_max_recv_data_segment_length; 138297b84d34SNavdeep Parhar request->idr_limits.isl_max_send_data_segment_length = 138348214203SNavdeep Parhar idl.idl_max_send_data_segment_length; 138497b84d34SNavdeep Parhar request->idr_limits.isl_max_burst_length = 138597b84d34SNavdeep Parhar idl.idl_max_burst_length; 138697b84d34SNavdeep Parhar request->idr_limits.isl_first_burst_length = 138797b84d34SNavdeep Parhar idl.idl_first_burst_length; 138882babffbSEdward Tomasz Napierala 1389009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1390009ea47eSEdward Tomasz Napierala return (0); 1391009ea47eSEdward Tomasz Napierala } 1392009ea47eSEdward Tomasz Napierala } 1393009ea47eSEdward Tomasz Napierala 1394009ea47eSEdward Tomasz Napierala static int 1395009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_handoff(struct iscsi_softc *sc, 1396009ea47eSEdward Tomasz Napierala struct iscsi_daemon_handoff *handoff) 1397009ea47eSEdward Tomasz Napierala { 1398009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1399f5cadbc4SNavdeep Parhar struct icl_conn *ic; 1400009ea47eSEdward Tomasz Napierala int error; 1401009ea47eSEdward Tomasz Napierala 1402009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1403009ea47eSEdward Tomasz Napierala 1404009ea47eSEdward Tomasz Napierala /* 1405009ea47eSEdward Tomasz Napierala * Find the session to hand off socket to. 1406009ea47eSEdward Tomasz Napierala */ 1407009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1408009ea47eSEdward Tomasz Napierala if (is->is_id == handoff->idh_session_id) 1409009ea47eSEdward Tomasz Napierala break; 1410009ea47eSEdward Tomasz Napierala } 1411009ea47eSEdward Tomasz Napierala if (is == NULL) { 1412009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1413009ea47eSEdward Tomasz Napierala return (ESRCH); 1414009ea47eSEdward Tomasz Napierala } 1415009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1416f5cadbc4SNavdeep Parhar ic = is->is_conn; 1417009ea47eSEdward Tomasz Napierala if (is->is_conf.isc_discovery || is->is_terminating) { 1418009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1419009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1420009ea47eSEdward Tomasz Napierala return (EINVAL); 1421009ea47eSEdward Tomasz Napierala } 14220260023fSEdward Tomasz Napierala if (is->is_connected) { 14230260023fSEdward Tomasz Napierala /* 14240260023fSEdward Tomasz Napierala * This might have happened because another iscsid(8) 14250260023fSEdward Tomasz Napierala * instance handed off the connection in the meantime. 14260260023fSEdward Tomasz Napierala * Just return. 14270260023fSEdward Tomasz Napierala */ 14280260023fSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "handoff on already connected " 14290260023fSEdward Tomasz Napierala "session"); 14300260023fSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 14310260023fSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 14320260023fSEdward Tomasz Napierala return (EBUSY); 14330260023fSEdward Tomasz Napierala } 1434009ea47eSEdward Tomasz Napierala 1435009ea47eSEdward Tomasz Napierala strlcpy(is->is_target_alias, handoff->idh_target_alias, 1436009ea47eSEdward Tomasz Napierala sizeof(is->is_target_alias)); 1437ffe82e05SAlexander Motin is->is_tsih = handoff->idh_tsih; 1438009ea47eSEdward Tomasz Napierala is->is_statsn = handoff->idh_statsn; 14397dbbd1aeSAlexander Motin is->is_protocol_level = handoff->idh_protocol_level; 1440009ea47eSEdward Tomasz Napierala is->is_initial_r2t = handoff->idh_initial_r2t; 1441009ea47eSEdward Tomasz Napierala is->is_immediate_data = handoff->idh_immediate_data; 1442c8b73c2cSNavdeep Parhar 14430cc7d64aSJohn Baldwin ic->ic_max_recv_data_segment_length = 144497b84d34SNavdeep Parhar handoff->idh_max_recv_data_segment_length; 14450cc7d64aSJohn Baldwin ic->ic_max_send_data_segment_length = 144697b84d34SNavdeep Parhar handoff->idh_max_send_data_segment_length; 1447009ea47eSEdward Tomasz Napierala is->is_max_burst_length = handoff->idh_max_burst_length; 1448009ea47eSEdward Tomasz Napierala is->is_first_burst_length = handoff->idh_first_burst_length; 1449009ea47eSEdward Tomasz Napierala 1450009ea47eSEdward Tomasz Napierala if (handoff->idh_header_digest == ISCSI_DIGEST_CRC32C) 1451f5cadbc4SNavdeep Parhar ic->ic_header_crc32c = true; 1452009ea47eSEdward Tomasz Napierala else 1453f5cadbc4SNavdeep Parhar ic->ic_header_crc32c = false; 1454009ea47eSEdward Tomasz Napierala if (handoff->idh_data_digest == ISCSI_DIGEST_CRC32C) 1455f5cadbc4SNavdeep Parhar ic->ic_data_crc32c = true; 1456009ea47eSEdward Tomasz Napierala else 1457f5cadbc4SNavdeep Parhar ic->ic_data_crc32c = false; 1458b218ca6fSEdward Tomasz Napierala ic->ic_maxtags = maxtags; 1459009ea47eSEdward Tomasz Napierala 1460009ea47eSEdward Tomasz Napierala is->is_cmdsn = 0; 1461cf23c509SEdward Tomasz Napierala is->is_expcmdsn = 0; 1462cf23c509SEdward Tomasz Napierala is->is_maxcmdsn = 0; 1463009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = false; 1464009ea47eSEdward Tomasz Napierala is->is_login_phase = false; 1465009ea47eSEdward Tomasz Napierala is->is_timeout = 0; 1466009ea47eSEdward Tomasz Napierala is->is_connected = true; 1467009ea47eSEdward Tomasz Napierala is->is_reason[0] = '\0'; 1468009ea47eSEdward Tomasz Napierala 1469009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1470009ea47eSEdward Tomasz Napierala 147157a4f20bSEdward Tomasz Napierala /* 1472906a424bSEdward Tomasz Napierala * If we're going through the proxy, the idh_socket will be 0, 1473906a424bSEdward Tomasz Napierala * and the ICL module can simply ignore this call. It can also 1474906a424bSEdward Tomasz Napierala * use it to determine it's no longer in the Login phase. 147557a4f20bSEdward Tomasz Napierala */ 1476f5cadbc4SNavdeep Parhar error = icl_conn_handoff(ic, handoff->idh_socket); 1477009ea47eSEdward Tomasz Napierala if (error != 0) { 1478009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1479009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1480009ea47eSEdward Tomasz Napierala return (error); 1481009ea47eSEdward Tomasz Napierala } 1482009ea47eSEdward Tomasz Napierala 1483009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1484009ea47eSEdward Tomasz Napierala 1485009ea47eSEdward Tomasz Napierala if (is->is_sim != NULL) { 1486009ea47eSEdward Tomasz Napierala /* 1487009ea47eSEdward Tomasz Napierala * When reconnecting, there already is SIM allocated for the session. 1488009ea47eSEdward Tomasz Napierala */ 1489009ea47eSEdward Tomasz Napierala KASSERT(is->is_simq_frozen, ("reconnect without frozen simq")); 1490009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1491009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "releasing"); 1492009ea47eSEdward Tomasz Napierala is->is_simq_frozen = false; 1493186bcdaaSEdward Tomasz Napierala xpt_release_simq(is->is_sim, 1); 1494009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1495009ea47eSEdward Tomasz Napierala 1496009ea47eSEdward Tomasz Napierala } else { 1497009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1498b218ca6fSEdward Tomasz Napierala is->is_devq = cam_simq_alloc(ic->ic_maxtags); 1499009ea47eSEdward Tomasz Napierala if (is->is_devq == NULL) { 1500009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate simq"); 1501009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1502009ea47eSEdward Tomasz Napierala return (ENOMEM); 1503009ea47eSEdward Tomasz Napierala } 1504009ea47eSEdward Tomasz Napierala 150547769bc5SJohn Baldwin is->is_sim = cam_sim_alloc(iscsi_action, NULL, "iscsi", 1506009ea47eSEdward Tomasz Napierala is, is->is_id /* unit */, &is->is_lock, 1507b218ca6fSEdward Tomasz Napierala 1, ic->ic_maxtags, is->is_devq); 1508009ea47eSEdward Tomasz Napierala if (is->is_sim == NULL) { 1509009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1510009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate SIM"); 1511009ea47eSEdward Tomasz Napierala cam_simq_free(is->is_devq); 1512009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1513009ea47eSEdward Tomasz Napierala return (ENOMEM); 1514009ea47eSEdward Tomasz Napierala } 1515009ea47eSEdward Tomasz Napierala 151630f8afd0SWarner Losh if (xpt_bus_register(is->is_sim, NULL, 0) != 0) { 1517009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1518009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to register bus"); 1519009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1520009ea47eSEdward Tomasz Napierala return (ENOMEM); 1521009ea47eSEdward Tomasz Napierala } 1522009ea47eSEdward Tomasz Napierala 1523009ea47eSEdward Tomasz Napierala error = xpt_create_path(&is->is_path, /*periph*/NULL, 1524009ea47eSEdward Tomasz Napierala cam_sim_path(is->is_sim), CAM_TARGET_WILDCARD, 1525009ea47eSEdward Tomasz Napierala CAM_LUN_WILDCARD); 1526009ea47eSEdward Tomasz Napierala if (error != CAM_REQ_CMP) { 1527009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1528009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to create path"); 1529009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1530009ea47eSEdward Tomasz Napierala return (ENOMEM); 1531009ea47eSEdward Tomasz Napierala } 1532009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1533009ea47eSEdward Tomasz Napierala } 1534009ea47eSEdward Tomasz Napierala 1535009ea47eSEdward Tomasz Napierala return (0); 1536009ea47eSEdward Tomasz Napierala } 1537009ea47eSEdward Tomasz Napierala 1538009ea47eSEdward Tomasz Napierala static int 1539009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_fail(struct iscsi_softc *sc, 1540009ea47eSEdward Tomasz Napierala struct iscsi_daemon_fail *fail) 1541009ea47eSEdward Tomasz Napierala { 1542009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1543009ea47eSEdward Tomasz Napierala 1544009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1545009ea47eSEdward Tomasz Napierala 1546009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1547009ea47eSEdward Tomasz Napierala if (is->is_id == fail->idf_session_id) 1548009ea47eSEdward Tomasz Napierala break; 1549009ea47eSEdward Tomasz Napierala } 1550009ea47eSEdward Tomasz Napierala if (is == NULL) { 1551009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1552009ea47eSEdward Tomasz Napierala return (ESRCH); 1553009ea47eSEdward Tomasz Napierala } 1554009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1555009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "iscsid(8) failed: %s", 1556009ea47eSEdward Tomasz Napierala fail->idf_reason); 1557009ea47eSEdward Tomasz Napierala strlcpy(is->is_reason, fail->idf_reason, sizeof(is->is_reason)); 1558009ea47eSEdward Tomasz Napierala //is->is_waiting_for_iscsid = false; 1559009ea47eSEdward Tomasz Napierala //is->is_login_phase = true; 1560009ea47eSEdward Tomasz Napierala //iscsi_session_reconnect(is); 1561009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1562009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1563009ea47eSEdward Tomasz Napierala 1564009ea47eSEdward Tomasz Napierala return (0); 1565009ea47eSEdward Tomasz Napierala } 1566009ea47eSEdward Tomasz Napierala 1567009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 1568009ea47eSEdward Tomasz Napierala static int 1569009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_connect(struct iscsi_softc *sc, 1570009ea47eSEdward Tomasz Napierala struct iscsi_daemon_connect *idc) 1571009ea47eSEdward Tomasz Napierala { 1572009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1573009ea47eSEdward Tomasz Napierala struct sockaddr *from_sa, *to_sa; 1574009ea47eSEdward Tomasz Napierala int error; 1575009ea47eSEdward Tomasz Napierala 1576009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1577009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1578009ea47eSEdward Tomasz Napierala if (is->is_id == idc->idc_session_id) 1579009ea47eSEdward Tomasz Napierala break; 1580009ea47eSEdward Tomasz Napierala } 1581009ea47eSEdward Tomasz Napierala if (is == NULL) { 1582009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1583009ea47eSEdward Tomasz Napierala return (ESRCH); 1584009ea47eSEdward Tomasz Napierala } 1585009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1586009ea47eSEdward Tomasz Napierala 1587009ea47eSEdward Tomasz Napierala if (idc->idc_from_addrlen > 0) { 1588009ea47eSEdward Tomasz Napierala error = getsockaddr(&from_sa, (void *)idc->idc_from_addr, idc->idc_from_addrlen); 158957a4f20bSEdward Tomasz Napierala if (error != 0) { 159057a4f20bSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, 159157a4f20bSEdward Tomasz Napierala "getsockaddr failed with error %d", error); 1592009ea47eSEdward Tomasz Napierala return (error); 159357a4f20bSEdward Tomasz Napierala } 1594009ea47eSEdward Tomasz Napierala } else { 1595009ea47eSEdward Tomasz Napierala from_sa = NULL; 1596009ea47eSEdward Tomasz Napierala } 1597009ea47eSEdward Tomasz Napierala error = getsockaddr(&to_sa, (void *)idc->idc_to_addr, idc->idc_to_addrlen); 1598009ea47eSEdward Tomasz Napierala if (error != 0) { 159957a4f20bSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "getsockaddr failed with error %d", 160057a4f20bSEdward Tomasz Napierala error); 1601009ea47eSEdward Tomasz Napierala free(from_sa, M_SONAME); 1602009ea47eSEdward Tomasz Napierala return (error); 1603009ea47eSEdward Tomasz Napierala } 1604009ea47eSEdward Tomasz Napierala 1605009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1606a3fd63f2SEdward Tomasz Napierala is->is_statsn = 0; 1607a3fd63f2SEdward Tomasz Napierala is->is_cmdsn = 0; 1608a3fd63f2SEdward Tomasz Napierala is->is_expcmdsn = 0; 1609a3fd63f2SEdward Tomasz Napierala is->is_maxcmdsn = 0; 1610009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = false; 1611009ea47eSEdward Tomasz Napierala is->is_login_phase = true; 1612009ea47eSEdward Tomasz Napierala is->is_timeout = 0; 1613009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1614009ea47eSEdward Tomasz Napierala 1615f41492b0SEdward Tomasz Napierala error = icl_conn_connect(is->is_conn, idc->idc_domain, 1616009ea47eSEdward Tomasz Napierala idc->idc_socktype, idc->idc_protocol, from_sa, to_sa); 1617009ea47eSEdward Tomasz Napierala free(from_sa, M_SONAME); 1618009ea47eSEdward Tomasz Napierala free(to_sa, M_SONAME); 1619009ea47eSEdward Tomasz Napierala 1620009ea47eSEdward Tomasz Napierala /* 1621009ea47eSEdward Tomasz Napierala * Digests are always disabled during login phase. 1622009ea47eSEdward Tomasz Napierala */ 1623009ea47eSEdward Tomasz Napierala is->is_conn->ic_header_crc32c = false; 1624009ea47eSEdward Tomasz Napierala is->is_conn->ic_data_crc32c = false; 1625009ea47eSEdward Tomasz Napierala 1626009ea47eSEdward Tomasz Napierala return (error); 1627009ea47eSEdward Tomasz Napierala } 1628009ea47eSEdward Tomasz Napierala 1629009ea47eSEdward Tomasz Napierala static int 1630009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_send(struct iscsi_softc *sc, 1631009ea47eSEdward Tomasz Napierala struct iscsi_daemon_send *ids) 1632009ea47eSEdward Tomasz Napierala { 1633009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1634009ea47eSEdward Tomasz Napierala struct icl_pdu *ip; 1635009ea47eSEdward Tomasz Napierala size_t datalen; 1636009ea47eSEdward Tomasz Napierala void *data; 1637009ea47eSEdward Tomasz Napierala int error; 1638009ea47eSEdward Tomasz Napierala 1639009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1640009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1641009ea47eSEdward Tomasz Napierala if (is->is_id == ids->ids_session_id) 1642009ea47eSEdward Tomasz Napierala break; 1643009ea47eSEdward Tomasz Napierala } 1644009ea47eSEdward Tomasz Napierala if (is == NULL) { 1645009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1646009ea47eSEdward Tomasz Napierala return (ESRCH); 1647009ea47eSEdward Tomasz Napierala } 1648009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1649009ea47eSEdward Tomasz Napierala 1650009ea47eSEdward Tomasz Napierala if (is->is_login_phase == false) 1651009ea47eSEdward Tomasz Napierala return (EBUSY); 1652009ea47eSEdward Tomasz Napierala 1653009ea47eSEdward Tomasz Napierala if (is->is_terminating || is->is_reconnecting) 1654009ea47eSEdward Tomasz Napierala return (EIO); 1655009ea47eSEdward Tomasz Napierala 1656009ea47eSEdward Tomasz Napierala datalen = ids->ids_data_segment_len; 16570cc7d64aSJohn Baldwin if (datalen > is->is_conn->ic_max_send_data_segment_length) 1658009ea47eSEdward Tomasz Napierala return (EINVAL); 1659009ea47eSEdward Tomasz Napierala if (datalen > 0) { 1660009ea47eSEdward Tomasz Napierala data = malloc(datalen, M_ISCSI, M_WAITOK); 1661009ea47eSEdward Tomasz Napierala error = copyin(ids->ids_data_segment, data, datalen); 1662009ea47eSEdward Tomasz Napierala if (error != 0) { 1663009ea47eSEdward Tomasz Napierala free(data, M_ISCSI); 1664009ea47eSEdward Tomasz Napierala return (error); 1665009ea47eSEdward Tomasz Napierala } 1666009ea47eSEdward Tomasz Napierala } 1667009ea47eSEdward Tomasz Napierala 1668d2d52b00SEdward Tomasz Napierala ip = icl_pdu_new(is->is_conn, M_WAITOK); 1669009ea47eSEdward Tomasz Napierala memcpy(ip->ip_bhs, ids->ids_bhs, sizeof(*ip->ip_bhs)); 1670009ea47eSEdward Tomasz Napierala if (datalen > 0) { 1671009ea47eSEdward Tomasz Napierala error = icl_pdu_append_data(ip, data, datalen, M_WAITOK); 1672009ea47eSEdward Tomasz Napierala KASSERT(error == 0, ("icl_pdu_append_data(..., M_WAITOK) failed")); 1673009ea47eSEdward Tomasz Napierala free(data, M_ISCSI); 1674009ea47eSEdward Tomasz Napierala } 1675d66a906bSEdward Tomasz Napierala iscsi_pdu_queue(ip); 1676009ea47eSEdward Tomasz Napierala 1677009ea47eSEdward Tomasz Napierala return (0); 1678009ea47eSEdward Tomasz Napierala } 1679009ea47eSEdward Tomasz Napierala 1680009ea47eSEdward Tomasz Napierala static int 1681009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_receive(struct iscsi_softc *sc, 1682009ea47eSEdward Tomasz Napierala struct iscsi_daemon_receive *idr) 1683009ea47eSEdward Tomasz Napierala { 1684009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1685009ea47eSEdward Tomasz Napierala struct icl_pdu *ip; 1686009ea47eSEdward Tomasz Napierala void *data; 16872f0586b2SEdward Tomasz Napierala int error; 1688009ea47eSEdward Tomasz Napierala 1689009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1690009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1691009ea47eSEdward Tomasz Napierala if (is->is_id == idr->idr_session_id) 1692009ea47eSEdward Tomasz Napierala break; 1693009ea47eSEdward Tomasz Napierala } 1694009ea47eSEdward Tomasz Napierala if (is == NULL) { 1695009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1696009ea47eSEdward Tomasz Napierala return (ESRCH); 1697009ea47eSEdward Tomasz Napierala } 1698009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1699009ea47eSEdward Tomasz Napierala 1700009ea47eSEdward Tomasz Napierala if (is->is_login_phase == false) 1701009ea47eSEdward Tomasz Napierala return (EBUSY); 1702009ea47eSEdward Tomasz Napierala 1703009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1704009ea47eSEdward Tomasz Napierala while (is->is_login_pdu == NULL && 1705009ea47eSEdward Tomasz Napierala is->is_terminating == false && 17062f0586b2SEdward Tomasz Napierala is->is_reconnecting == false) { 17072f0586b2SEdward Tomasz Napierala error = cv_wait_sig(&is->is_login_cv, &is->is_lock); 17082f0586b2SEdward Tomasz Napierala if (error != 0) { 17092f0586b2SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 17102f0586b2SEdward Tomasz Napierala return (error); 17112f0586b2SEdward Tomasz Napierala } 17122f0586b2SEdward Tomasz Napierala } 1713009ea47eSEdward Tomasz Napierala if (is->is_terminating || is->is_reconnecting) { 1714009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1715009ea47eSEdward Tomasz Napierala return (EIO); 1716009ea47eSEdward Tomasz Napierala } 1717009ea47eSEdward Tomasz Napierala ip = is->is_login_pdu; 1718009ea47eSEdward Tomasz Napierala is->is_login_pdu = NULL; 1719009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1720009ea47eSEdward Tomasz Napierala 1721009ea47eSEdward Tomasz Napierala if (ip->ip_data_len > idr->idr_data_segment_len) { 1722009ea47eSEdward Tomasz Napierala icl_pdu_free(ip); 1723009ea47eSEdward Tomasz Napierala return (EMSGSIZE); 1724009ea47eSEdward Tomasz Napierala } 1725009ea47eSEdward Tomasz Napierala 1726009ea47eSEdward Tomasz Napierala copyout(ip->ip_bhs, idr->idr_bhs, sizeof(*ip->ip_bhs)); 1727009ea47eSEdward Tomasz Napierala if (ip->ip_data_len > 0) { 1728009ea47eSEdward Tomasz Napierala data = malloc(ip->ip_data_len, M_ISCSI, M_WAITOK); 1729009ea47eSEdward Tomasz Napierala icl_pdu_get_data(ip, 0, data, ip->ip_data_len); 1730009ea47eSEdward Tomasz Napierala copyout(data, idr->idr_data_segment, ip->ip_data_len); 1731009ea47eSEdward Tomasz Napierala free(data, M_ISCSI); 1732009ea47eSEdward Tomasz Napierala } 1733009ea47eSEdward Tomasz Napierala 1734009ea47eSEdward Tomasz Napierala icl_pdu_free(ip); 1735009ea47eSEdward Tomasz Napierala 1736009ea47eSEdward Tomasz Napierala return (0); 1737009ea47eSEdward Tomasz Napierala } 1738009ea47eSEdward Tomasz Napierala #endif /* ICL_KERNEL_PROXY */ 1739009ea47eSEdward Tomasz Napierala 1740009ea47eSEdward Tomasz Napierala static void 1741009ea47eSEdward Tomasz Napierala iscsi_sanitize_session_conf(struct iscsi_session_conf *isc) 1742009ea47eSEdward Tomasz Napierala { 1743009ea47eSEdward Tomasz Napierala /* 1744009ea47eSEdward Tomasz Napierala * Just make sure all the fields are null-terminated. 1745009ea47eSEdward Tomasz Napierala * 1746009ea47eSEdward Tomasz Napierala * XXX: This is not particularly secure. We should 1747009ea47eSEdward Tomasz Napierala * create our own conf and then copy in relevant 1748009ea47eSEdward Tomasz Napierala * fields. 1749009ea47eSEdward Tomasz Napierala */ 1750009ea47eSEdward Tomasz Napierala isc->isc_initiator[ISCSI_NAME_LEN - 1] = '\0'; 1751009ea47eSEdward Tomasz Napierala isc->isc_initiator_addr[ISCSI_ADDR_LEN - 1] = '\0'; 1752009ea47eSEdward Tomasz Napierala isc->isc_initiator_alias[ISCSI_ALIAS_LEN - 1] = '\0'; 1753009ea47eSEdward Tomasz Napierala isc->isc_target[ISCSI_NAME_LEN - 1] = '\0'; 1754009ea47eSEdward Tomasz Napierala isc->isc_target_addr[ISCSI_ADDR_LEN - 1] = '\0'; 1755009ea47eSEdward Tomasz Napierala isc->isc_user[ISCSI_NAME_LEN - 1] = '\0'; 1756009ea47eSEdward Tomasz Napierala isc->isc_secret[ISCSI_SECRET_LEN - 1] = '\0'; 1757009ea47eSEdward Tomasz Napierala isc->isc_mutual_user[ISCSI_NAME_LEN - 1] = '\0'; 1758009ea47eSEdward Tomasz Napierala isc->isc_mutual_secret[ISCSI_SECRET_LEN - 1] = '\0'; 1759009ea47eSEdward Tomasz Napierala } 1760009ea47eSEdward Tomasz Napierala 176151be90b5SEdward Tomasz Napierala static bool 176251be90b5SEdward Tomasz Napierala iscsi_valid_session_conf(const struct iscsi_session_conf *isc) 176351be90b5SEdward Tomasz Napierala { 176451be90b5SEdward Tomasz Napierala 176551be90b5SEdward Tomasz Napierala if (isc->isc_initiator[0] == '\0') { 176651be90b5SEdward Tomasz Napierala ISCSI_DEBUG("empty isc_initiator"); 176751be90b5SEdward Tomasz Napierala return (false); 176851be90b5SEdward Tomasz Napierala } 176951be90b5SEdward Tomasz Napierala 177051be90b5SEdward Tomasz Napierala if (isc->isc_target_addr[0] == '\0') { 177151be90b5SEdward Tomasz Napierala ISCSI_DEBUG("empty isc_target_addr"); 177251be90b5SEdward Tomasz Napierala return (false); 177351be90b5SEdward Tomasz Napierala } 177451be90b5SEdward Tomasz Napierala 177551be90b5SEdward Tomasz Napierala if (isc->isc_discovery != 0 && isc->isc_target[0] != 0) { 177651be90b5SEdward Tomasz Napierala ISCSI_DEBUG("non-empty isc_target for discovery session"); 177751be90b5SEdward Tomasz Napierala return (false); 177851be90b5SEdward Tomasz Napierala } 177951be90b5SEdward Tomasz Napierala 178051be90b5SEdward Tomasz Napierala if (isc->isc_discovery == 0 && isc->isc_target[0] == 0) { 178151be90b5SEdward Tomasz Napierala ISCSI_DEBUG("empty isc_target for non-discovery session"); 178251be90b5SEdward Tomasz Napierala return (false); 178351be90b5SEdward Tomasz Napierala } 178451be90b5SEdward Tomasz Napierala 178551be90b5SEdward Tomasz Napierala return (true); 178651be90b5SEdward Tomasz Napierala } 178751be90b5SEdward Tomasz Napierala 1788009ea47eSEdward Tomasz Napierala static int 1789009ea47eSEdward Tomasz Napierala iscsi_ioctl_session_add(struct iscsi_softc *sc, struct iscsi_session_add *isa) 1790009ea47eSEdward Tomasz Napierala { 1791009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1792009ea47eSEdward Tomasz Napierala const struct iscsi_session *is2; 1793009ea47eSEdward Tomasz Napierala int error; 1794009ea47eSEdward Tomasz Napierala 1795009ea47eSEdward Tomasz Napierala iscsi_sanitize_session_conf(&isa->isa_conf); 179651be90b5SEdward Tomasz Napierala if (iscsi_valid_session_conf(&isa->isa_conf) == false) 179751be90b5SEdward Tomasz Napierala return (EINVAL); 1798009ea47eSEdward Tomasz Napierala 1799009ea47eSEdward Tomasz Napierala is = malloc(sizeof(*is), M_ISCSI, M_ZERO | M_WAITOK); 1800009ea47eSEdward Tomasz Napierala memcpy(&is->is_conf, &isa->isa_conf, sizeof(is->is_conf)); 1801009ea47eSEdward Tomasz Napierala 1802009ea47eSEdward Tomasz Napierala sx_xlock(&sc->sc_lock); 1803009ea47eSEdward Tomasz Napierala 1804009ea47eSEdward Tomasz Napierala /* 1805009ea47eSEdward Tomasz Napierala * Prevent duplicates. 1806009ea47eSEdward Tomasz Napierala */ 1807009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is2, &sc->sc_sessions, is_next) { 18087843bd03SEdward Tomasz Napierala if (!!is->is_conf.isc_discovery != 18097843bd03SEdward Tomasz Napierala !!is2->is_conf.isc_discovery) 18107843bd03SEdward Tomasz Napierala continue; 18117843bd03SEdward Tomasz Napierala 18127843bd03SEdward Tomasz Napierala if (strcmp(is->is_conf.isc_target_addr, 18137843bd03SEdward Tomasz Napierala is2->is_conf.isc_target_addr) != 0) 18147843bd03SEdward Tomasz Napierala continue; 18157843bd03SEdward Tomasz Napierala 18167843bd03SEdward Tomasz Napierala if (is->is_conf.isc_discovery == 0 && 18177843bd03SEdward Tomasz Napierala strcmp(is->is_conf.isc_target, 18187843bd03SEdward Tomasz Napierala is2->is_conf.isc_target) != 0) 18197843bd03SEdward Tomasz Napierala continue; 18207843bd03SEdward Tomasz Napierala 1821009ea47eSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 18227843bd03SEdward Tomasz Napierala free(is, M_ISCSI); 1823009ea47eSEdward Tomasz Napierala return (EBUSY); 1824009ea47eSEdward Tomasz Napierala } 1825009ea47eSEdward Tomasz Napierala 182682babffbSEdward Tomasz Napierala is->is_conn = icl_new_conn(is->is_conf.isc_offload, 1827b8911594SEdward Tomasz Napierala is->is_conf.isc_iser, "iscsi", &is->is_lock); 182882babffbSEdward Tomasz Napierala if (is->is_conn == NULL) { 182982babffbSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 183082babffbSEdward Tomasz Napierala free(is, M_ISCSI); 183182babffbSEdward Tomasz Napierala return (EINVAL); 183282babffbSEdward Tomasz Napierala } 1833009ea47eSEdward Tomasz Napierala is->is_conn->ic_receive = iscsi_receive_callback; 1834009ea47eSEdward Tomasz Napierala is->is_conn->ic_error = iscsi_error_callback; 1835009ea47eSEdward Tomasz Napierala is->is_conn->ic_prv0 = is; 1836009ea47eSEdward Tomasz Napierala TAILQ_INIT(&is->is_outstanding); 183716c158a5SEdward Tomasz Napierala STAILQ_INIT(&is->is_postponed); 1838009ea47eSEdward Tomasz Napierala mtx_init(&is->is_lock, "iscsi_lock", NULL, MTX_DEF); 1839009ea47eSEdward Tomasz Napierala cv_init(&is->is_maintenance_cv, "iscsi_mt"); 1840009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 1841009ea47eSEdward Tomasz Napierala cv_init(&is->is_login_cv, "iscsi_login"); 1842009ea47eSEdward Tomasz Napierala #endif 1843009ea47eSEdward Tomasz Napierala 18440cc7d64aSJohn Baldwin /* 18450cc7d64aSJohn Baldwin * Set some default values, from RFC 3720, section 12. 18460cc7d64aSJohn Baldwin * 18470cc7d64aSJohn Baldwin * These values are updated by the handoff IOCTL, but are 18480cc7d64aSJohn Baldwin * needed prior to the handoff to support sending the ISER 18490cc7d64aSJohn Baldwin * login PDU. 18500cc7d64aSJohn Baldwin */ 18510cc7d64aSJohn Baldwin is->is_conn->ic_max_recv_data_segment_length = 8192; 18520cc7d64aSJohn Baldwin is->is_conn->ic_max_send_data_segment_length = 8192; 18530cc7d64aSJohn Baldwin is->is_max_burst_length = 262144; 18540cc7d64aSJohn Baldwin is->is_first_burst_length = 65536; 18550cc7d64aSJohn Baldwin 1856009ea47eSEdward Tomasz Napierala is->is_softc = sc; 1857009ea47eSEdward Tomasz Napierala sc->sc_last_session_id++; 1858009ea47eSEdward Tomasz Napierala is->is_id = sc->sc_last_session_id; 1859ffe82e05SAlexander Motin is->is_isid[0] = 0x80; /* RFC 3720, 10.12.5: 10b, "Random" ISID. */ 1860ffe82e05SAlexander Motin arc4rand(&is->is_isid[1], 5, 0); 1861ffe82e05SAlexander Motin is->is_tsih = 0; 1862009ea47eSEdward Tomasz Napierala callout_init(&is->is_callout, 1); 1863009ea47eSEdward Tomasz Napierala 1864009ea47eSEdward Tomasz Napierala error = kthread_add(iscsi_maintenance_thread, is, NULL, NULL, 0, 0, "iscsimt"); 1865009ea47eSEdward Tomasz Napierala if (error != 0) { 1866009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "kthread_add(9) failed with error %d", error); 186709f2b94bSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 1868009ea47eSEdward Tomasz Napierala return (error); 1869009ea47eSEdward Tomasz Napierala } 1870009ea47eSEdward Tomasz Napierala 187109f2b94bSEdward Tomasz Napierala callout_reset(&is->is_callout, 1 * hz, iscsi_callout, is); 187209f2b94bSEdward Tomasz Napierala TAILQ_INSERT_TAIL(&sc->sc_sessions, is, is_next); 187309f2b94bSEdward Tomasz Napierala 18742be596adSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1875ba165a31SEdward Tomasz Napierala /* 1876ba165a31SEdward Tomasz Napierala * Don't notify iscsid(8) if the session is disabled and it's not 1877ba165a31SEdward Tomasz Napierala * a discovery session, 1878ba165a31SEdward Tomasz Napierala */ 1879ba165a31SEdward Tomasz Napierala if (is->is_conf.isc_enable == 0 && is->is_conf.isc_discovery == 0) { 1880ba165a31SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1881ba165a31SEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 1882ba165a31SEdward Tomasz Napierala return (0); 1883ba165a31SEdward Tomasz Napierala } 1884ba165a31SEdward Tomasz Napierala 1885009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = true; 1886009ea47eSEdward Tomasz Napierala strlcpy(is->is_reason, "Waiting for iscsid(8)", sizeof(is->is_reason)); 18872be596adSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1888009ea47eSEdward Tomasz Napierala cv_signal(&sc->sc_cv); 1889009ea47eSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 1890009ea47eSEdward Tomasz Napierala return (0); 1891009ea47eSEdward Tomasz Napierala } 1892009ea47eSEdward Tomasz Napierala 1893009ea47eSEdward Tomasz Napierala static bool 1894009ea47eSEdward Tomasz Napierala iscsi_session_conf_matches(unsigned int id1, const struct iscsi_session_conf *c1, 1895009ea47eSEdward Tomasz Napierala unsigned int id2, const struct iscsi_session_conf *c2) 1896009ea47eSEdward Tomasz Napierala { 18976cc1e267SEdward Tomasz Napierala 18986cc1e267SEdward Tomasz Napierala if (id2 != 0 && id2 != id1) 1899009ea47eSEdward Tomasz Napierala return (false); 19006cc1e267SEdward Tomasz Napierala if (c2->isc_target[0] != '\0' && 19016cc1e267SEdward Tomasz Napierala strcmp(c1->isc_target, c2->isc_target) != 0) 19026cc1e267SEdward Tomasz Napierala return (false); 19036cc1e267SEdward Tomasz Napierala if (c2->isc_target_addr[0] != '\0' && 19046cc1e267SEdward Tomasz Napierala strcmp(c1->isc_target_addr, c2->isc_target_addr) != 0) 19056cc1e267SEdward Tomasz Napierala return (false); 19066cc1e267SEdward Tomasz Napierala return (true); 1907009ea47eSEdward Tomasz Napierala } 1908009ea47eSEdward Tomasz Napierala 1909009ea47eSEdward Tomasz Napierala static int 1910009ea47eSEdward Tomasz Napierala iscsi_ioctl_session_remove(struct iscsi_softc *sc, 1911009ea47eSEdward Tomasz Napierala struct iscsi_session_remove *isr) 1912009ea47eSEdward Tomasz Napierala { 1913009ea47eSEdward Tomasz Napierala struct iscsi_session *is, *tmp; 1914009ea47eSEdward Tomasz Napierala bool found = false; 1915009ea47eSEdward Tomasz Napierala 1916009ea47eSEdward Tomasz Napierala iscsi_sanitize_session_conf(&isr->isr_conf); 1917009ea47eSEdward Tomasz Napierala 1918009ea47eSEdward Tomasz Napierala sx_xlock(&sc->sc_lock); 1919009ea47eSEdward Tomasz Napierala TAILQ_FOREACH_SAFE(is, &sc->sc_sessions, is_next, tmp) { 1920009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1921009ea47eSEdward Tomasz Napierala if (iscsi_session_conf_matches(is->is_id, &is->is_conf, 1922009ea47eSEdward Tomasz Napierala isr->isr_session_id, &isr->isr_conf)) { 1923009ea47eSEdward Tomasz Napierala found = true; 1924009ea47eSEdward Tomasz Napierala iscsi_session_logout(is); 1925009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1926009ea47eSEdward Tomasz Napierala } 1927009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1928009ea47eSEdward Tomasz Napierala } 1929009ea47eSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 1930009ea47eSEdward Tomasz Napierala 1931009ea47eSEdward Tomasz Napierala if (!found) 1932009ea47eSEdward Tomasz Napierala return (ESRCH); 1933009ea47eSEdward Tomasz Napierala 1934009ea47eSEdward Tomasz Napierala return (0); 1935009ea47eSEdward Tomasz Napierala } 1936009ea47eSEdward Tomasz Napierala 1937009ea47eSEdward Tomasz Napierala static int 1938009ea47eSEdward Tomasz Napierala iscsi_ioctl_session_list(struct iscsi_softc *sc, struct iscsi_session_list *isl) 1939009ea47eSEdward Tomasz Napierala { 1940009ea47eSEdward Tomasz Napierala int error; 1941009ea47eSEdward Tomasz Napierala unsigned int i = 0; 1942009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1943009ea47eSEdward Tomasz Napierala struct iscsi_session_state iss; 1944009ea47eSEdward Tomasz Napierala 1945009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1946009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1947009ea47eSEdward Tomasz Napierala if (i >= isl->isl_nentries) { 1948009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1949009ea47eSEdward Tomasz Napierala return (EMSGSIZE); 1950009ea47eSEdward Tomasz Napierala } 1951009ea47eSEdward Tomasz Napierala memset(&iss, 0, sizeof(iss)); 1952009ea47eSEdward Tomasz Napierala memcpy(&iss.iss_conf, &is->is_conf, sizeof(iss.iss_conf)); 1953009ea47eSEdward Tomasz Napierala iss.iss_id = is->is_id; 1954009ea47eSEdward Tomasz Napierala strlcpy(iss.iss_target_alias, is->is_target_alias, sizeof(iss.iss_target_alias)); 1955009ea47eSEdward Tomasz Napierala strlcpy(iss.iss_reason, is->is_reason, sizeof(iss.iss_reason)); 195682babffbSEdward Tomasz Napierala strlcpy(iss.iss_offload, is->is_conn->ic_offload, sizeof(iss.iss_offload)); 1957009ea47eSEdward Tomasz Napierala 1958009ea47eSEdward Tomasz Napierala if (is->is_conn->ic_header_crc32c) 1959009ea47eSEdward Tomasz Napierala iss.iss_header_digest = ISCSI_DIGEST_CRC32C; 1960009ea47eSEdward Tomasz Napierala else 1961009ea47eSEdward Tomasz Napierala iss.iss_header_digest = ISCSI_DIGEST_NONE; 1962009ea47eSEdward Tomasz Napierala 1963009ea47eSEdward Tomasz Napierala if (is->is_conn->ic_data_crc32c) 1964009ea47eSEdward Tomasz Napierala iss.iss_data_digest = ISCSI_DIGEST_CRC32C; 1965009ea47eSEdward Tomasz Napierala else 1966009ea47eSEdward Tomasz Napierala iss.iss_data_digest = ISCSI_DIGEST_NONE; 1967009ea47eSEdward Tomasz Napierala 196897b84d34SNavdeep Parhar iss.iss_max_send_data_segment_length = 19690cc7d64aSJohn Baldwin is->is_conn->ic_max_send_data_segment_length; 197097b84d34SNavdeep Parhar iss.iss_max_recv_data_segment_length = 19710cc7d64aSJohn Baldwin is->is_conn->ic_max_recv_data_segment_length; 19724e5408f1SEdward Tomasz Napierala iss.iss_max_burst_length = is->is_max_burst_length; 19734e5408f1SEdward Tomasz Napierala iss.iss_first_burst_length = is->is_first_burst_length; 1974009ea47eSEdward Tomasz Napierala iss.iss_immediate_data = is->is_immediate_data; 1975009ea47eSEdward Tomasz Napierala iss.iss_connected = is->is_connected; 1976009ea47eSEdward Tomasz Napierala 1977009ea47eSEdward Tomasz Napierala error = copyout(&iss, isl->isl_pstates + i, sizeof(iss)); 1978009ea47eSEdward Tomasz Napierala if (error != 0) { 1979009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1980009ea47eSEdward Tomasz Napierala return (error); 1981009ea47eSEdward Tomasz Napierala } 1982009ea47eSEdward Tomasz Napierala i++; 1983009ea47eSEdward Tomasz Napierala } 1984009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1985009ea47eSEdward Tomasz Napierala 1986009ea47eSEdward Tomasz Napierala isl->isl_nentries = i; 1987009ea47eSEdward Tomasz Napierala 1988009ea47eSEdward Tomasz Napierala return (0); 1989009ea47eSEdward Tomasz Napierala } 1990009ea47eSEdward Tomasz Napierala 1991009ea47eSEdward Tomasz Napierala static int 199251be90b5SEdward Tomasz Napierala iscsi_ioctl_session_modify(struct iscsi_softc *sc, 199351be90b5SEdward Tomasz Napierala struct iscsi_session_modify *ism) 199451be90b5SEdward Tomasz Napierala { 199551be90b5SEdward Tomasz Napierala struct iscsi_session *is; 19968ff2372aSEdward Tomasz Napierala const struct iscsi_session *is2; 199751be90b5SEdward Tomasz Napierala 199851be90b5SEdward Tomasz Napierala iscsi_sanitize_session_conf(&ism->ism_conf); 199951be90b5SEdward Tomasz Napierala if (iscsi_valid_session_conf(&ism->ism_conf) == false) 200051be90b5SEdward Tomasz Napierala return (EINVAL); 200151be90b5SEdward Tomasz Napierala 200251be90b5SEdward Tomasz Napierala sx_xlock(&sc->sc_lock); 200351be90b5SEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 200451be90b5SEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 20058ff2372aSEdward Tomasz Napierala if (is->is_id == ism->ism_session_id) { 20068ff2372aSEdward Tomasz Napierala /* Note that the session remains locked. */ 200751be90b5SEdward Tomasz Napierala break; 20088ff2372aSEdward Tomasz Napierala } 200951be90b5SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 201051be90b5SEdward Tomasz Napierala } 201151be90b5SEdward Tomasz Napierala if (is == NULL) { 201251be90b5SEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 201351be90b5SEdward Tomasz Napierala return (ESRCH); 201451be90b5SEdward Tomasz Napierala } 20158ff2372aSEdward Tomasz Napierala 20168ff2372aSEdward Tomasz Napierala /* 20178ff2372aSEdward Tomasz Napierala * Prevent duplicates. 20188ff2372aSEdward Tomasz Napierala */ 20198ff2372aSEdward Tomasz Napierala TAILQ_FOREACH(is2, &sc->sc_sessions, is_next) { 20208ff2372aSEdward Tomasz Napierala if (is == is2) 20218ff2372aSEdward Tomasz Napierala continue; 20228ff2372aSEdward Tomasz Napierala 20238ff2372aSEdward Tomasz Napierala if (!!ism->ism_conf.isc_discovery != 20248ff2372aSEdward Tomasz Napierala !!is2->is_conf.isc_discovery) 20258ff2372aSEdward Tomasz Napierala continue; 20268ff2372aSEdward Tomasz Napierala 20278ff2372aSEdward Tomasz Napierala if (strcmp(ism->ism_conf.isc_target_addr, 20288ff2372aSEdward Tomasz Napierala is2->is_conf.isc_target_addr) != 0) 20298ff2372aSEdward Tomasz Napierala continue; 20308ff2372aSEdward Tomasz Napierala 20318ff2372aSEdward Tomasz Napierala if (ism->ism_conf.isc_discovery == 0 && 20328ff2372aSEdward Tomasz Napierala strcmp(ism->ism_conf.isc_target, 20338ff2372aSEdward Tomasz Napierala is2->is_conf.isc_target) != 0) 20348ff2372aSEdward Tomasz Napierala continue; 20358ff2372aSEdward Tomasz Napierala 20368ff2372aSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 20378ff2372aSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 20388ff2372aSEdward Tomasz Napierala return (EBUSY); 20398ff2372aSEdward Tomasz Napierala } 20408ff2372aSEdward Tomasz Napierala 204151be90b5SEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 204251be90b5SEdward Tomasz Napierala 204351be90b5SEdward Tomasz Napierala memcpy(&is->is_conf, &ism->ism_conf, sizeof(is->is_conf)); 204451be90b5SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 204551be90b5SEdward Tomasz Napierala 204651be90b5SEdward Tomasz Napierala iscsi_session_reconnect(is); 204751be90b5SEdward Tomasz Napierala 204851be90b5SEdward Tomasz Napierala return (0); 204951be90b5SEdward Tomasz Napierala } 205051be90b5SEdward Tomasz Napierala 205151be90b5SEdward Tomasz Napierala static int 2052009ea47eSEdward Tomasz Napierala iscsi_ioctl(struct cdev *dev, u_long cmd, caddr_t arg, int mode, 2053009ea47eSEdward Tomasz Napierala struct thread *td) 2054009ea47eSEdward Tomasz Napierala { 2055009ea47eSEdward Tomasz Napierala struct iscsi_softc *sc; 2056009ea47eSEdward Tomasz Napierala 2057009ea47eSEdward Tomasz Napierala sc = dev->si_drv1; 2058009ea47eSEdward Tomasz Napierala 2059009ea47eSEdward Tomasz Napierala switch (cmd) { 2060009ea47eSEdward Tomasz Napierala case ISCSIDWAIT: 2061009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_wait(sc, 2062009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_request *)arg)); 2063009ea47eSEdward Tomasz Napierala case ISCSIDHANDOFF: 2064009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_handoff(sc, 2065009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_handoff *)arg)); 2066009ea47eSEdward Tomasz Napierala case ISCSIDFAIL: 2067009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_fail(sc, 2068009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_fail *)arg)); 2069009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 2070009ea47eSEdward Tomasz Napierala case ISCSIDCONNECT: 2071009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_connect(sc, 2072009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_connect *)arg)); 2073009ea47eSEdward Tomasz Napierala case ISCSIDSEND: 2074009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_send(sc, 2075009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_send *)arg)); 2076009ea47eSEdward Tomasz Napierala case ISCSIDRECEIVE: 2077009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_receive(sc, 2078009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_receive *)arg)); 2079009ea47eSEdward Tomasz Napierala #endif /* ICL_KERNEL_PROXY */ 2080009ea47eSEdward Tomasz Napierala case ISCSISADD: 2081009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_session_add(sc, 2082009ea47eSEdward Tomasz Napierala (struct iscsi_session_add *)arg)); 2083009ea47eSEdward Tomasz Napierala case ISCSISREMOVE: 2084009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_session_remove(sc, 2085009ea47eSEdward Tomasz Napierala (struct iscsi_session_remove *)arg)); 2086009ea47eSEdward Tomasz Napierala case ISCSISLIST: 2087009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_session_list(sc, 2088009ea47eSEdward Tomasz Napierala (struct iscsi_session_list *)arg)); 208951be90b5SEdward Tomasz Napierala case ISCSISMODIFY: 209051be90b5SEdward Tomasz Napierala return (iscsi_ioctl_session_modify(sc, 209151be90b5SEdward Tomasz Napierala (struct iscsi_session_modify *)arg)); 2092009ea47eSEdward Tomasz Napierala default: 2093009ea47eSEdward Tomasz Napierala return (EINVAL); 2094009ea47eSEdward Tomasz Napierala } 2095009ea47eSEdward Tomasz Napierala } 2096009ea47eSEdward Tomasz Napierala 2097009ea47eSEdward Tomasz Napierala static struct iscsi_outstanding * 2098009ea47eSEdward Tomasz Napierala iscsi_outstanding_find(struct iscsi_session *is, uint32_t initiator_task_tag) 2099009ea47eSEdward Tomasz Napierala { 2100009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io; 2101009ea47eSEdward Tomasz Napierala 2102009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 2103009ea47eSEdward Tomasz Napierala 2104009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(io, &is->is_outstanding, io_next) { 2105009ea47eSEdward Tomasz Napierala if (io->io_initiator_task_tag == initiator_task_tag) 2106009ea47eSEdward Tomasz Napierala return (io); 2107009ea47eSEdward Tomasz Napierala } 2108009ea47eSEdward Tomasz Napierala return (NULL); 2109009ea47eSEdward Tomasz Napierala } 2110009ea47eSEdward Tomasz Napierala 2111aa75114cSAlexander Motin static struct iscsi_outstanding * 2112aa75114cSAlexander Motin iscsi_outstanding_find_ccb(struct iscsi_session *is, union ccb *ccb) 2113aa75114cSAlexander Motin { 2114aa75114cSAlexander Motin struct iscsi_outstanding *io; 2115aa75114cSAlexander Motin 2116aa75114cSAlexander Motin ISCSI_SESSION_LOCK_ASSERT(is); 2117aa75114cSAlexander Motin 2118aa75114cSAlexander Motin TAILQ_FOREACH(io, &is->is_outstanding, io_next) { 2119aa75114cSAlexander Motin if (io->io_ccb == ccb) 2120aa75114cSAlexander Motin return (io); 2121aa75114cSAlexander Motin } 2122aa75114cSAlexander Motin return (NULL); 2123aa75114cSAlexander Motin } 2124aa75114cSAlexander Motin 2125aa75114cSAlexander Motin static struct iscsi_outstanding * 2126604c023fSEdward Tomasz Napierala iscsi_outstanding_add(struct iscsi_session *is, struct icl_pdu *request, 21277a03d007SEdward Tomasz Napierala union ccb *ccb, uint32_t *initiator_task_tagp) 2128009ea47eSEdward Tomasz Napierala { 2129009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io; 21307a03d007SEdward Tomasz Napierala int error; 2131009ea47eSEdward Tomasz Napierala 2132009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 2133009ea47eSEdward Tomasz Napierala 2134009ea47eSEdward Tomasz Napierala io = uma_zalloc(iscsi_outstanding_zone, M_NOWAIT | M_ZERO); 2135009ea47eSEdward Tomasz Napierala if (io == NULL) { 21367a03d007SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate %zd bytes", 21377a03d007SEdward Tomasz Napierala sizeof(*io)); 2138aa75114cSAlexander Motin return (NULL); 2139009ea47eSEdward Tomasz Napierala } 21407a03d007SEdward Tomasz Napierala 2141604c023fSEdward Tomasz Napierala error = icl_conn_task_setup(is->is_conn, request, &ccb->csio, 21427a03d007SEdward Tomasz Napierala initiator_task_tagp, &io->io_icl_prv); 21437a03d007SEdward Tomasz Napierala if (error != 0) { 21447a03d007SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, 21457a03d007SEdward Tomasz Napierala "icl_conn_task_setup() failed with error %d", error); 21467a03d007SEdward Tomasz Napierala uma_zfree(iscsi_outstanding_zone, io); 21477a03d007SEdward Tomasz Napierala return (NULL); 21487a03d007SEdward Tomasz Napierala } 21497a03d007SEdward Tomasz Napierala 21507a03d007SEdward Tomasz Napierala KASSERT(iscsi_outstanding_find(is, *initiator_task_tagp) == NULL, 21517a03d007SEdward Tomasz Napierala ("initiator_task_tag 0x%x already added", *initiator_task_tagp)); 21527a03d007SEdward Tomasz Napierala 21537a03d007SEdward Tomasz Napierala io->io_initiator_task_tag = *initiator_task_tagp; 2154009ea47eSEdward Tomasz Napierala io->io_ccb = ccb; 2155009ea47eSEdward Tomasz Napierala TAILQ_INSERT_TAIL(&is->is_outstanding, io, io_next); 2156aa75114cSAlexander Motin return (io); 2157009ea47eSEdward Tomasz Napierala } 2158009ea47eSEdward Tomasz Napierala 2159009ea47eSEdward Tomasz Napierala static void 2160009ea47eSEdward Tomasz Napierala iscsi_outstanding_remove(struct iscsi_session *is, struct iscsi_outstanding *io) 2161009ea47eSEdward Tomasz Napierala { 2162009ea47eSEdward Tomasz Napierala 2163009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 2164009ea47eSEdward Tomasz Napierala 21657a03d007SEdward Tomasz Napierala icl_conn_task_done(is->is_conn, io->io_icl_prv); 2166009ea47eSEdward Tomasz Napierala TAILQ_REMOVE(&is->is_outstanding, io, io_next); 2167009ea47eSEdward Tomasz Napierala uma_zfree(iscsi_outstanding_zone, io); 2168009ea47eSEdward Tomasz Napierala } 2169009ea47eSEdward Tomasz Napierala 2170009ea47eSEdward Tomasz Napierala static void 2171aa75114cSAlexander Motin iscsi_action_abort(struct iscsi_session *is, union ccb *ccb) 2172aa75114cSAlexander Motin { 2173aa75114cSAlexander Motin struct icl_pdu *request; 2174aa75114cSAlexander Motin struct iscsi_bhs_task_management_request *bhstmr; 2175aa75114cSAlexander Motin struct ccb_abort *cab = &ccb->cab; 2176aa75114cSAlexander Motin struct iscsi_outstanding *io, *aio; 21777a03d007SEdward Tomasz Napierala uint32_t initiator_task_tag; 2178aa75114cSAlexander Motin 2179aa75114cSAlexander Motin ISCSI_SESSION_LOCK_ASSERT(is); 2180aa75114cSAlexander Motin 2181aa75114cSAlexander Motin #if 0 2182aa75114cSAlexander Motin KASSERT(is->is_login_phase == false, ("%s called during Login Phase", __func__)); 2183aa75114cSAlexander Motin #else 2184aa75114cSAlexander Motin if (is->is_login_phase) { 2185aa75114cSAlexander Motin ccb->ccb_h.status = CAM_REQ_ABORTED; 2186aa75114cSAlexander Motin xpt_done(ccb); 2187aa75114cSAlexander Motin return; 2188aa75114cSAlexander Motin } 2189aa75114cSAlexander Motin #endif 2190aa75114cSAlexander Motin 2191aa75114cSAlexander Motin aio = iscsi_outstanding_find_ccb(is, cab->abort_ccb); 2192aa75114cSAlexander Motin if (aio == NULL) { 2193aa75114cSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP; 2194aa75114cSAlexander Motin xpt_done(ccb); 2195aa75114cSAlexander Motin return; 2196aa75114cSAlexander Motin } 2197aa75114cSAlexander Motin 2198d2d52b00SEdward Tomasz Napierala request = icl_pdu_new(is->is_conn, M_NOWAIT); 2199aa75114cSAlexander Motin if (request == NULL) { 2200aa75114cSAlexander Motin ccb->ccb_h.status = CAM_RESRC_UNAVAIL; 2201aa75114cSAlexander Motin xpt_done(ccb); 2202aa75114cSAlexander Motin return; 2203aa75114cSAlexander Motin } 2204aa75114cSAlexander Motin 22057a03d007SEdward Tomasz Napierala initiator_task_tag = is->is_initiator_task_tag++; 22069bee9a98SAlexander Motin if (initiator_task_tag == 0xffffffff) 22079bee9a98SAlexander Motin initiator_task_tag = is->is_initiator_task_tag++; 2208aa75114cSAlexander Motin 2209604c023fSEdward Tomasz Napierala io = iscsi_outstanding_add(is, request, NULL, &initiator_task_tag); 2210aa75114cSAlexander Motin if (io == NULL) { 2211aa75114cSAlexander Motin icl_pdu_free(request); 2212aa75114cSAlexander Motin ccb->ccb_h.status = CAM_RESRC_UNAVAIL; 2213aa75114cSAlexander Motin xpt_done(ccb); 2214aa75114cSAlexander Motin return; 2215aa75114cSAlexander Motin } 22163dd2a7a5SAlexander Motin io->io_referenced_task_tag = aio->io_initiator_task_tag; 22177a03d007SEdward Tomasz Napierala 22187a03d007SEdward Tomasz Napierala bhstmr = (struct iscsi_bhs_task_management_request *)request->ip_bhs; 22197a03d007SEdward Tomasz Napierala bhstmr->bhstmr_opcode = ISCSI_BHS_OPCODE_TASK_REQUEST; 22207a03d007SEdward Tomasz Napierala bhstmr->bhstmr_function = 0x80 | BHSTMR_FUNCTION_ABORT_TASK; 22217a03d007SEdward Tomasz Napierala bhstmr->bhstmr_lun = htobe64(CAM_EXTLUN_BYTE_SWIZZLE(ccb->ccb_h.target_lun)); 22227a03d007SEdward Tomasz Napierala bhstmr->bhstmr_initiator_task_tag = initiator_task_tag; 22237a03d007SEdward Tomasz Napierala bhstmr->bhstmr_referenced_task_tag = aio->io_initiator_task_tag; 22247a03d007SEdward Tomasz Napierala 2225aa75114cSAlexander Motin iscsi_pdu_queue_locked(request); 2226aa75114cSAlexander Motin } 2227aa75114cSAlexander Motin 2228aa75114cSAlexander Motin static void 2229009ea47eSEdward Tomasz Napierala iscsi_action_scsiio(struct iscsi_session *is, union ccb *ccb) 2230009ea47eSEdward Tomasz Napierala { 2231009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 2232009ea47eSEdward Tomasz Napierala struct iscsi_bhs_scsi_command *bhssc; 2233009ea47eSEdward Tomasz Napierala struct ccb_scsiio *csio; 2234aa75114cSAlexander Motin struct iscsi_outstanding *io; 2235009ea47eSEdward Tomasz Napierala size_t len; 22367a03d007SEdward Tomasz Napierala uint32_t initiator_task_tag; 2237009ea47eSEdward Tomasz Napierala int error; 2238009ea47eSEdward Tomasz Napierala 2239009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 2240009ea47eSEdward Tomasz Napierala 2241009ea47eSEdward Tomasz Napierala #if 0 2242009ea47eSEdward Tomasz Napierala KASSERT(is->is_login_phase == false, ("%s called during Login Phase", __func__)); 2243009ea47eSEdward Tomasz Napierala #else 2244009ea47eSEdward Tomasz Napierala if (is->is_login_phase) { 2245009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "called during login phase"); 2246009ea47eSEdward Tomasz Napierala if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 2247009ea47eSEdward Tomasz Napierala xpt_freeze_devq(ccb->ccb_h.path, 1); 2248009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 2249009ea47eSEdward Tomasz Napierala } 2250009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_REQ_ABORTED | CAM_DEV_QFRZN; 2251009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2252009ea47eSEdward Tomasz Napierala return; 2253009ea47eSEdward Tomasz Napierala } 2254009ea47eSEdward Tomasz Napierala #endif 2255009ea47eSEdward Tomasz Napierala 2256d2d52b00SEdward Tomasz Napierala request = icl_pdu_new(is->is_conn, M_NOWAIT); 2257009ea47eSEdward Tomasz Napierala if (request == NULL) { 2258009ea47eSEdward Tomasz Napierala if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 2259009ea47eSEdward Tomasz Napierala xpt_freeze_devq(ccb->ccb_h.path, 1); 2260009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 2261009ea47eSEdward Tomasz Napierala } 2262009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_RESRC_UNAVAIL | CAM_DEV_QFRZN; 2263009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2264009ea47eSEdward Tomasz Napierala return; 2265009ea47eSEdward Tomasz Napierala } 2266009ea47eSEdward Tomasz Napierala 22677a03d007SEdward Tomasz Napierala initiator_task_tag = is->is_initiator_task_tag++; 22689bee9a98SAlexander Motin if (initiator_task_tag == 0xffffffff) 22699bee9a98SAlexander Motin initiator_task_tag = is->is_initiator_task_tag++; 22709bee9a98SAlexander Motin 2271604c023fSEdward Tomasz Napierala io = iscsi_outstanding_add(is, request, ccb, &initiator_task_tag); 22727a03d007SEdward Tomasz Napierala if (io == NULL) { 22737a03d007SEdward Tomasz Napierala icl_pdu_free(request); 22747a03d007SEdward Tomasz Napierala if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 22757a03d007SEdward Tomasz Napierala xpt_freeze_devq(ccb->ccb_h.path, 1); 22767a03d007SEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 22777a03d007SEdward Tomasz Napierala } 22787a03d007SEdward Tomasz Napierala ccb->ccb_h.status = CAM_RESRC_UNAVAIL | CAM_DEV_QFRZN; 22797a03d007SEdward Tomasz Napierala xpt_done(ccb); 22807a03d007SEdward Tomasz Napierala return; 22817a03d007SEdward Tomasz Napierala } 22827a03d007SEdward Tomasz Napierala 2283009ea47eSEdward Tomasz Napierala csio = &ccb->csio; 2284009ea47eSEdward Tomasz Napierala bhssc = (struct iscsi_bhs_scsi_command *)request->ip_bhs; 2285009ea47eSEdward Tomasz Napierala bhssc->bhssc_opcode = ISCSI_BHS_OPCODE_SCSI_COMMAND; 2286009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_F; 2287009ea47eSEdward Tomasz Napierala switch (csio->ccb_h.flags & CAM_DIR_MASK) { 2288009ea47eSEdward Tomasz Napierala case CAM_DIR_IN: 2289009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_R; 2290009ea47eSEdward Tomasz Napierala break; 2291009ea47eSEdward Tomasz Napierala case CAM_DIR_OUT: 2292009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_W; 2293009ea47eSEdward Tomasz Napierala break; 2294009ea47eSEdward Tomasz Napierala } 2295009ea47eSEdward Tomasz Napierala 2296462cf3baSAlexander Motin if ((ccb->ccb_h.flags & CAM_TAG_ACTION_VALID) != 0) { 2297009ea47eSEdward Tomasz Napierala switch (csio->tag_action) { 2298009ea47eSEdward Tomasz Napierala case MSG_HEAD_OF_Q_TAG: 2299009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_HOQ; 2300009ea47eSEdward Tomasz Napierala break; 2301009ea47eSEdward Tomasz Napierala case MSG_ORDERED_Q_TAG: 2302009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_ORDERED; 2303009ea47eSEdward Tomasz Napierala break; 2304009ea47eSEdward Tomasz Napierala case MSG_ACA_TASK: 2305009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_ACA; 2306009ea47eSEdward Tomasz Napierala break; 2307009ea47eSEdward Tomasz Napierala case MSG_SIMPLE_Q_TAG: 2308009ea47eSEdward Tomasz Napierala default: 2309009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_SIMPLE; 2310009ea47eSEdward Tomasz Napierala break; 2311009ea47eSEdward Tomasz Napierala } 2312462cf3baSAlexander Motin } else 2313462cf3baSAlexander Motin bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_UNTAGGED; 2314009ea47eSEdward Tomasz Napierala 231588364968SAlexander Motin if (is->is_protocol_level >= 2) { 231688364968SAlexander Motin bhssc->bhssc_pri = (csio->priority << BHSSC_PRI_SHIFT) & 231788364968SAlexander Motin BHSSC_PRI_MASK; 231888364968SAlexander Motin } 231988364968SAlexander Motin 2320a9f2f291SEdward Tomasz Napierala bhssc->bhssc_lun = htobe64(CAM_EXTLUN_BYTE_SWIZZLE(ccb->ccb_h.target_lun)); 23217a03d007SEdward Tomasz Napierala bhssc->bhssc_initiator_task_tag = initiator_task_tag; 2322009ea47eSEdward Tomasz Napierala bhssc->bhssc_expected_data_transfer_length = htonl(csio->dxfer_len); 2323009ea47eSEdward Tomasz Napierala KASSERT(csio->cdb_len <= sizeof(bhssc->bhssc_cdb), 2324009ea47eSEdward Tomasz Napierala ("unsupported CDB size %zd", (size_t)csio->cdb_len)); 2325009ea47eSEdward Tomasz Napierala 2326009ea47eSEdward Tomasz Napierala if (csio->ccb_h.flags & CAM_CDB_POINTER) 2327009ea47eSEdward Tomasz Napierala memcpy(&bhssc->bhssc_cdb, csio->cdb_io.cdb_ptr, csio->cdb_len); 2328009ea47eSEdward Tomasz Napierala else 2329009ea47eSEdward Tomasz Napierala memcpy(&bhssc->bhssc_cdb, csio->cdb_io.cdb_bytes, csio->cdb_len); 2330009ea47eSEdward Tomasz Napierala 2331009ea47eSEdward Tomasz Napierala if (is->is_immediate_data && 2332009ea47eSEdward Tomasz Napierala (csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT) { 2333009ea47eSEdward Tomasz Napierala len = csio->dxfer_len; 2334009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "adding %zd of immediate data", len); 2335009ea47eSEdward Tomasz Napierala if (len > is->is_first_burst_length) { 233697b84d34SNavdeep Parhar ISCSI_SESSION_DEBUG(is, "len %zd -> %d", len, is->is_first_burst_length); 2337009ea47eSEdward Tomasz Napierala len = is->is_first_burst_length; 2338009ea47eSEdward Tomasz Napierala } 23390cc7d64aSJohn Baldwin if (len > is->is_conn->ic_max_send_data_segment_length) { 234097b84d34SNavdeep Parhar ISCSI_SESSION_DEBUG(is, "len %zd -> %d", len, 23410cc7d64aSJohn Baldwin is->is_conn->ic_max_send_data_segment_length); 23420cc7d64aSJohn Baldwin len = is->is_conn->ic_max_send_data_segment_length; 23433f9e1172SAlexander Motin } 2344009ea47eSEdward Tomasz Napierala 2345009ea47eSEdward Tomasz Napierala error = icl_pdu_append_data(request, csio->data_ptr, len, M_NOWAIT); 2346009ea47eSEdward Tomasz Napierala if (error != 0) { 2347938bcb04SEdward Tomasz Napierala iscsi_outstanding_remove(is, io); 2348009ea47eSEdward Tomasz Napierala icl_pdu_free(request); 2349009ea47eSEdward Tomasz Napierala if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 2350009ea47eSEdward Tomasz Napierala xpt_freeze_devq(ccb->ccb_h.path, 1); 2351009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 2352009ea47eSEdward Tomasz Napierala } 2353009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_RESRC_UNAVAIL | CAM_DEV_QFRZN; 2354009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2355009ea47eSEdward Tomasz Napierala return; 2356009ea47eSEdward Tomasz Napierala } 2357009ea47eSEdward Tomasz Napierala } 2358009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(request); 2359009ea47eSEdward Tomasz Napierala } 2360009ea47eSEdward Tomasz Napierala 2361009ea47eSEdward Tomasz Napierala static void 2362009ea47eSEdward Tomasz Napierala iscsi_action(struct cam_sim *sim, union ccb *ccb) 2363009ea47eSEdward Tomasz Napierala { 2364009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 2365009ea47eSEdward Tomasz Napierala 2366009ea47eSEdward Tomasz Napierala is = cam_sim_softc(sim); 2367009ea47eSEdward Tomasz Napierala 2368009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 2369009ea47eSEdward Tomasz Napierala 2370f1f12e40SEdward Tomasz Napierala if (is->is_terminating || 2371f1f12e40SEdward Tomasz Napierala (is->is_connected == false && fail_on_disconnection)) { 2372009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_DEV_NOT_THERE; 2373009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2374009ea47eSEdward Tomasz Napierala return; 2375009ea47eSEdward Tomasz Napierala } 2376009ea47eSEdward Tomasz Napierala 2377186bcdaaSEdward Tomasz Napierala /* 2378186bcdaaSEdward Tomasz Napierala * Make sure CAM doesn't sneak in a CCB just after freezing the queue. 2379186bcdaaSEdward Tomasz Napierala */ 2380186bcdaaSEdward Tomasz Napierala if (is->is_simq_frozen == true) { 2381186bcdaaSEdward Tomasz Napierala ccb->ccb_h.status &= ~(CAM_SIM_QUEUED | CAM_STATUS_MASK); 2382186bcdaaSEdward Tomasz Napierala ccb->ccb_h.status |= CAM_REQUEUE_REQ; 2383186bcdaaSEdward Tomasz Napierala /* Don't freeze the devq - the SIM queue is already frozen. */ 2384186bcdaaSEdward Tomasz Napierala xpt_done(ccb); 2385186bcdaaSEdward Tomasz Napierala return; 2386186bcdaaSEdward Tomasz Napierala } 2387186bcdaaSEdward Tomasz Napierala 2388009ea47eSEdward Tomasz Napierala switch (ccb->ccb_h.func_code) { 2389009ea47eSEdward Tomasz Napierala case XPT_PATH_INQ: 2390009ea47eSEdward Tomasz Napierala { 2391009ea47eSEdward Tomasz Napierala struct ccb_pathinq *cpi = &ccb->cpi; 2392009ea47eSEdward Tomasz Napierala 2393009ea47eSEdward Tomasz Napierala cpi->version_num = 1; 2394009ea47eSEdward Tomasz Napierala cpi->hba_inquiry = PI_TAG_ABLE; 2395009ea47eSEdward Tomasz Napierala cpi->target_sprt = 0; 2396a9f2f291SEdward Tomasz Napierala cpi->hba_misc = PIM_EXTLUNS; 23977deb68abSEdward Tomasz Napierala /* 23987deb68abSEdward Tomasz Napierala * XXX: It shouldn't ever be NULL; this could be turned 23997deb68abSEdward Tomasz Napierala * into a KASSERT eventually. 24007deb68abSEdward Tomasz Napierala */ 24017deb68abSEdward Tomasz Napierala if (is->is_conn == NULL) 24027deb68abSEdward Tomasz Napierala ISCSI_WARN("NULL conn"); 24037deb68abSEdward Tomasz Napierala else if (is->is_conn->ic_unmapped) 24047deb68abSEdward Tomasz Napierala cpi->hba_misc |= PIM_UNMAPPED; 2405009ea47eSEdward Tomasz Napierala cpi->hba_eng_cnt = 0; 2406009ea47eSEdward Tomasz Napierala cpi->max_target = 0; 240717cf3eb1SEdward Tomasz Napierala /* 240817cf3eb1SEdward Tomasz Napierala * Note that the variable below is only relevant for targets 240917cf3eb1SEdward Tomasz Napierala * that don't claim compliance with anything above SPC2, which 241017cf3eb1SEdward Tomasz Napierala * means they don't support REPORT_LUNS. 241117cf3eb1SEdward Tomasz Napierala */ 241217cf3eb1SEdward Tomasz Napierala cpi->max_lun = 255; 2413a9f2f291SEdward Tomasz Napierala cpi->initiator_id = ~0; 24147843bd03SEdward Tomasz Napierala strlcpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); 24157843bd03SEdward Tomasz Napierala strlcpy(cpi->hba_vid, "iSCSI", HBA_IDLEN); 24167843bd03SEdward Tomasz Napierala strlcpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); 2417009ea47eSEdward Tomasz Napierala cpi->unit_number = cam_sim_unit(sim); 2418009ea47eSEdward Tomasz Napierala cpi->bus_id = cam_sim_bus(sim); 2419009ea47eSEdward Tomasz Napierala cpi->base_transfer_speed = 150000; /* XXX */ 2420009ea47eSEdward Tomasz Napierala cpi->transport = XPORT_ISCSI; 2421009ea47eSEdward Tomasz Napierala cpi->transport_version = 0; 2422009ea47eSEdward Tomasz Napierala cpi->protocol = PROTO_SCSI; 2423009ea47eSEdward Tomasz Napierala cpi->protocol_version = SCSI_REV_SPC3; 2424cd853791SKonstantin Belousov cpi->maxio = maxphys; 2425009ea47eSEdward Tomasz Napierala cpi->ccb_h.status = CAM_REQ_CMP; 2426009ea47eSEdward Tomasz Napierala break; 2427009ea47eSEdward Tomasz Napierala } 2428462cf3baSAlexander Motin case XPT_GET_TRAN_SETTINGS: 2429462cf3baSAlexander Motin { 2430462cf3baSAlexander Motin struct ccb_trans_settings *cts; 2431462cf3baSAlexander Motin struct ccb_trans_settings_scsi *scsi; 2432462cf3baSAlexander Motin 2433462cf3baSAlexander Motin cts = &ccb->cts; 2434462cf3baSAlexander Motin scsi = &cts->proto_specific.scsi; 2435462cf3baSAlexander Motin 2436462cf3baSAlexander Motin cts->protocol = PROTO_SCSI; 2437462cf3baSAlexander Motin cts->protocol_version = SCSI_REV_SPC3; 2438462cf3baSAlexander Motin cts->transport = XPORT_ISCSI; 2439462cf3baSAlexander Motin cts->transport_version = 0; 2440462cf3baSAlexander Motin scsi->valid = CTS_SCSI_VALID_TQ; 2441462cf3baSAlexander Motin scsi->flags = CTS_SCSI_FLAGS_TAG_ENB; 2442462cf3baSAlexander Motin cts->ccb_h.status = CAM_REQ_CMP; 2443462cf3baSAlexander Motin break; 2444462cf3baSAlexander Motin } 2445009ea47eSEdward Tomasz Napierala case XPT_CALC_GEOMETRY: 2446009ea47eSEdward Tomasz Napierala cam_calc_geometry(&ccb->ccg, /*extended*/1); 2447009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_REQ_CMP; 2448009ea47eSEdward Tomasz Napierala break; 2449009ea47eSEdward Tomasz Napierala #if 0 2450009ea47eSEdward Tomasz Napierala /* 2451009ea47eSEdward Tomasz Napierala * XXX: What's the point? 2452009ea47eSEdward Tomasz Napierala */ 2453009ea47eSEdward Tomasz Napierala case XPT_RESET_BUS: 2454009ea47eSEdward Tomasz Napierala case XPT_TERM_IO: 2455009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "faking success for reset, abort, or term_io"); 2456009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_REQ_CMP; 2457009ea47eSEdward Tomasz Napierala break; 2458009ea47eSEdward Tomasz Napierala #endif 2459aa75114cSAlexander Motin case XPT_ABORT: 2460aa75114cSAlexander Motin iscsi_action_abort(is, ccb); 2461aa75114cSAlexander Motin return; 2462009ea47eSEdward Tomasz Napierala case XPT_SCSI_IO: 2463009ea47eSEdward Tomasz Napierala iscsi_action_scsiio(is, ccb); 2464009ea47eSEdward Tomasz Napierala return; 2465009ea47eSEdward Tomasz Napierala default: 2466009ea47eSEdward Tomasz Napierala #if 0 2467009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "got unsupported code 0x%x", ccb->ccb_h.func_code); 2468009ea47eSEdward Tomasz Napierala #endif 2469009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_FUNC_NOTAVAIL; 2470009ea47eSEdward Tomasz Napierala break; 2471009ea47eSEdward Tomasz Napierala } 2472009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2473009ea47eSEdward Tomasz Napierala } 2474009ea47eSEdward Tomasz Napierala 2475009ea47eSEdward Tomasz Napierala static void 2476481b36c6SSteven Hartland iscsi_terminate_sessions(struct iscsi_softc *sc) 2477009ea47eSEdward Tomasz Napierala { 2478009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 2479009ea47eSEdward Tomasz Napierala 2480481b36c6SSteven Hartland sx_slock(&sc->sc_lock); 2481481b36c6SSteven Hartland TAILQ_FOREACH(is, &sc->sc_sessions, is_next) 2482481b36c6SSteven Hartland iscsi_session_terminate(is); 2483481b36c6SSteven Hartland while(!TAILQ_EMPTY(&sc->sc_sessions)) { 2484481b36c6SSteven Hartland ISCSI_DEBUG("waiting for sessions to terminate"); 2485481b36c6SSteven Hartland cv_wait(&sc->sc_cv, &sc->sc_lock); 2486481b36c6SSteven Hartland } 2487481b36c6SSteven Hartland ISCSI_DEBUG("all sessions terminated"); 2488481b36c6SSteven Hartland sx_sunlock(&sc->sc_lock); 2489481b36c6SSteven Hartland } 2490481b36c6SSteven Hartland 2491481b36c6SSteven Hartland static void 2492481b36c6SSteven Hartland iscsi_shutdown_pre(struct iscsi_softc *sc) 2493481b36c6SSteven Hartland { 2494481b36c6SSteven Hartland struct iscsi_session *is; 2495481b36c6SSteven Hartland 2496481b36c6SSteven Hartland if (!fail_on_shutdown) 2497481b36c6SSteven Hartland return; 2498009ea47eSEdward Tomasz Napierala 2499e553ca49SEdward Tomasz Napierala /* 2500e553ca49SEdward Tomasz Napierala * If we have any sessions waiting for reconnection, request 2501e553ca49SEdward Tomasz Napierala * maintenance thread to fail them immediately instead of waiting 2502e553ca49SEdward Tomasz Napierala * for reconnect timeout. 2503481b36c6SSteven Hartland * 2504481b36c6SSteven Hartland * This prevents LUNs with mounted filesystems that are supported 2505481b36c6SSteven Hartland * by disconnected iSCSI sessions from hanging, however it will 2506481b36c6SSteven Hartland * fail all queued BIOs. 2507e553ca49SEdward Tomasz Napierala */ 2508481b36c6SSteven Hartland ISCSI_DEBUG("forcing failing all disconnected sessions due to shutdown"); 2509481b36c6SSteven Hartland 2510481b36c6SSteven Hartland fail_on_disconnection = 1; 2511481b36c6SSteven Hartland 2512009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 2513e553ca49SEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 2514e553ca49SEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 2515481b36c6SSteven Hartland if (!is->is_connected) { 2516481b36c6SSteven Hartland ISCSI_SESSION_DEBUG(is, "force failing disconnected session early"); 2517e553ca49SEdward Tomasz Napierala iscsi_session_reconnect(is); 2518481b36c6SSteven Hartland } 2519e553ca49SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 2520e553ca49SEdward Tomasz Napierala } 2521009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 2522009ea47eSEdward Tomasz Napierala } 2523009ea47eSEdward Tomasz Napierala 2524481b36c6SSteven Hartland static void 2525481b36c6SSteven Hartland iscsi_shutdown_post(struct iscsi_softc *sc) 2526481b36c6SSteven Hartland { 2527481b36c6SSteven Hartland 2528879e0604SMateusz Guzik if (!KERNEL_PANICKED()) { 2529481b36c6SSteven Hartland ISCSI_DEBUG("removing all sessions due to shutdown"); 2530481b36c6SSteven Hartland iscsi_terminate_sessions(sc); 2531481b36c6SSteven Hartland } 2532e54fb4ffSAndriy Gapon } 2533481b36c6SSteven Hartland 2534009ea47eSEdward Tomasz Napierala static int 2535009ea47eSEdward Tomasz Napierala iscsi_load(void) 2536009ea47eSEdward Tomasz Napierala { 2537009ea47eSEdward Tomasz Napierala int error; 2538009ea47eSEdward Tomasz Napierala 2539009ea47eSEdward Tomasz Napierala sc = malloc(sizeof(*sc), M_ISCSI, M_ZERO | M_WAITOK); 2540009ea47eSEdward Tomasz Napierala sx_init(&sc->sc_lock, "iscsi"); 2541009ea47eSEdward Tomasz Napierala TAILQ_INIT(&sc->sc_sessions); 2542009ea47eSEdward Tomasz Napierala cv_init(&sc->sc_cv, "iscsi_cv"); 2543009ea47eSEdward Tomasz Napierala 2544009ea47eSEdward Tomasz Napierala iscsi_outstanding_zone = uma_zcreate("iscsi_outstanding", 2545009ea47eSEdward Tomasz Napierala sizeof(struct iscsi_outstanding), NULL, NULL, NULL, NULL, 2546c28c09c1SEdward Tomasz Napierala UMA_ALIGN_PTR, 0); 2547009ea47eSEdward Tomasz Napierala 2548009ea47eSEdward Tomasz Napierala error = make_dev_p(MAKEDEV_CHECKNAME, &sc->sc_cdev, &iscsi_cdevsw, 2549009ea47eSEdward Tomasz Napierala NULL, UID_ROOT, GID_WHEEL, 0600, "iscsi"); 2550009ea47eSEdward Tomasz Napierala if (error != 0) { 2551009ea47eSEdward Tomasz Napierala ISCSI_WARN("failed to create device node, error %d", error); 2552009ea47eSEdward Tomasz Napierala return (error); 2553009ea47eSEdward Tomasz Napierala } 2554009ea47eSEdward Tomasz Napierala sc->sc_cdev->si_drv1 = sc; 2555009ea47eSEdward Tomasz Napierala 2556481b36c6SSteven Hartland sc->sc_shutdown_pre_eh = EVENTHANDLER_REGISTER(shutdown_pre_sync, 2557481b36c6SSteven Hartland iscsi_shutdown_pre, sc, SHUTDOWN_PRI_FIRST); 2558481b36c6SSteven Hartland /* 2559481b36c6SSteven Hartland * shutdown_post_sync needs to run after filesystem shutdown and before 2560481b36c6SSteven Hartland * CAM shutdown - otherwise when rebooting with an iSCSI session that is 2561481b36c6SSteven Hartland * disconnected but has outstanding requests, dashutdown() will hang on 2562481b36c6SSteven Hartland * cam_periph_runccb(). 2563481b36c6SSteven Hartland */ 2564481b36c6SSteven Hartland sc->sc_shutdown_post_eh = EVENTHANDLER_REGISTER(shutdown_post_sync, 2565481b36c6SSteven Hartland iscsi_shutdown_post, sc, SHUTDOWN_PRI_DEFAULT - 1); 2566009ea47eSEdward Tomasz Napierala 2567009ea47eSEdward Tomasz Napierala return (0); 2568009ea47eSEdward Tomasz Napierala } 2569009ea47eSEdward Tomasz Napierala 2570009ea47eSEdward Tomasz Napierala static int 2571009ea47eSEdward Tomasz Napierala iscsi_unload(void) 2572009ea47eSEdward Tomasz Napierala { 2573009ea47eSEdward Tomasz Napierala 257489df4847SJohn Baldwin /* Awaken any threads asleep in iscsi_ioctl(). */ 257589df4847SJohn Baldwin sx_xlock(&sc->sc_lock); 257689df4847SJohn Baldwin sc->sc_unloading = true; 257789df4847SJohn Baldwin cv_signal(&sc->sc_cv); 257889df4847SJohn Baldwin sx_xunlock(&sc->sc_lock); 257989df4847SJohn Baldwin 2580a667cf73SEdward Tomasz Napierala if (sc->sc_cdev != NULL) { 2581009ea47eSEdward Tomasz Napierala ISCSI_DEBUG("removing device node"); 2582009ea47eSEdward Tomasz Napierala destroy_dev(sc->sc_cdev); 2583009ea47eSEdward Tomasz Napierala ISCSI_DEBUG("device node removed"); 2584a667cf73SEdward Tomasz Napierala } 2585009ea47eSEdward Tomasz Napierala 2586481b36c6SSteven Hartland if (sc->sc_shutdown_pre_eh != NULL) 2587481b36c6SSteven Hartland EVENTHANDLER_DEREGISTER(shutdown_pre_sync, sc->sc_shutdown_pre_eh); 2588481b36c6SSteven Hartland if (sc->sc_shutdown_post_eh != NULL) 2589481b36c6SSteven Hartland EVENTHANDLER_DEREGISTER(shutdown_post_sync, sc->sc_shutdown_post_eh); 2590009ea47eSEdward Tomasz Napierala 2591481b36c6SSteven Hartland iscsi_terminate_sessions(sc); 2592009ea47eSEdward Tomasz Napierala 2593009ea47eSEdward Tomasz Napierala uma_zdestroy(iscsi_outstanding_zone); 2594009ea47eSEdward Tomasz Napierala sx_destroy(&sc->sc_lock); 2595009ea47eSEdward Tomasz Napierala cv_destroy(&sc->sc_cv); 2596009ea47eSEdward Tomasz Napierala free(sc, M_ISCSI); 2597009ea47eSEdward Tomasz Napierala return (0); 2598009ea47eSEdward Tomasz Napierala } 2599009ea47eSEdward Tomasz Napierala 2600009ea47eSEdward Tomasz Napierala static int 2601009ea47eSEdward Tomasz Napierala iscsi_quiesce(void) 2602009ea47eSEdward Tomasz Napierala { 2603009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 2604009ea47eSEdward Tomasz Napierala if (!TAILQ_EMPTY(&sc->sc_sessions)) { 2605009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 2606009ea47eSEdward Tomasz Napierala return (EBUSY); 2607009ea47eSEdward Tomasz Napierala } 2608009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 2609009ea47eSEdward Tomasz Napierala return (0); 2610009ea47eSEdward Tomasz Napierala } 2611009ea47eSEdward Tomasz Napierala 2612009ea47eSEdward Tomasz Napierala static int 2613009ea47eSEdward Tomasz Napierala iscsi_modevent(module_t mod, int what, void *arg) 2614009ea47eSEdward Tomasz Napierala { 2615009ea47eSEdward Tomasz Napierala int error; 2616009ea47eSEdward Tomasz Napierala 2617009ea47eSEdward Tomasz Napierala switch (what) { 2618009ea47eSEdward Tomasz Napierala case MOD_LOAD: 2619009ea47eSEdward Tomasz Napierala error = iscsi_load(); 2620009ea47eSEdward Tomasz Napierala break; 2621009ea47eSEdward Tomasz Napierala case MOD_UNLOAD: 2622009ea47eSEdward Tomasz Napierala error = iscsi_unload(); 2623009ea47eSEdward Tomasz Napierala break; 2624009ea47eSEdward Tomasz Napierala case MOD_QUIESCE: 2625009ea47eSEdward Tomasz Napierala error = iscsi_quiesce(); 2626009ea47eSEdward Tomasz Napierala break; 2627009ea47eSEdward Tomasz Napierala default: 2628009ea47eSEdward Tomasz Napierala error = EINVAL; 2629009ea47eSEdward Tomasz Napierala break; 2630009ea47eSEdward Tomasz Napierala } 2631009ea47eSEdward Tomasz Napierala return (error); 2632009ea47eSEdward Tomasz Napierala } 2633009ea47eSEdward Tomasz Napierala 2634009ea47eSEdward Tomasz Napierala moduledata_t iscsi_data = { 2635009ea47eSEdward Tomasz Napierala "iscsi", 2636009ea47eSEdward Tomasz Napierala iscsi_modevent, 2637009ea47eSEdward Tomasz Napierala 0 2638009ea47eSEdward Tomasz Napierala }; 2639009ea47eSEdward Tomasz Napierala 2640009ea47eSEdward Tomasz Napierala DECLARE_MODULE(iscsi, iscsi_data, SI_SUB_DRIVERS, SI_ORDER_MIDDLE); 2641009ea47eSEdward Tomasz Napierala MODULE_DEPEND(iscsi, cam, 1, 1, 1); 2642009ea47eSEdward Tomasz Napierala MODULE_DEPEND(iscsi, icl, 1, 1, 1); 2643