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; 895*4f0f5bf9SJohn Baldwin if (ntohl(bhssr->bhssr_expdatasn) != io->io_datasn) { 896*4f0f5bf9SJohn Baldwin ISCSI_SESSION_WARN(is, 897*4f0f5bf9SJohn Baldwin "ExpDataSN mismatch in SCSI Response (%u vs %u)", 898*4f0f5bf9SJohn Baldwin ntohl(bhssr->bhssr_expdatasn), io->io_datasn); 899*4f0f5bf9SJohn Baldwin icl_pdu_free(response); 900*4f0f5bf9SJohn Baldwin iscsi_session_reconnect(is); 901*4f0f5bf9SJohn Baldwin ISCSI_SESSION_UNLOCK(is); 902*4f0f5bf9SJohn Baldwin return; 903*4f0f5bf9SJohn Baldwin } 904bcec64bcSEdward Tomasz Napierala 905bcec64bcSEdward Tomasz Napierala /* 906bcec64bcSEdward Tomasz Napierala * With iSER, after getting good response we can be sure 907bcec64bcSEdward Tomasz Napierala * that all the data has been successfully transferred. 908bcec64bcSEdward Tomasz Napierala */ 909bcec64bcSEdward Tomasz Napierala if (is->is_conn->ic_iser) { 910bcec64bcSEdward Tomasz Napierala resid = ntohl(bhssr->bhssr_residual_count); 911bcec64bcSEdward Tomasz Napierala if (bhssr->bhssr_flags & BHSSR_FLAGS_RESIDUAL_UNDERFLOW) { 912bcec64bcSEdward Tomasz Napierala io->io_received = ccb->csio.dxfer_len - resid; 913bcec64bcSEdward Tomasz Napierala } else if (bhssr->bhssr_flags & BHSSR_FLAGS_RESIDUAL_OVERFLOW) { 914bcec64bcSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "overflow: target indicates %d", resid); 915bcec64bcSEdward Tomasz Napierala } else { 916bcec64bcSEdward Tomasz Napierala io->io_received = ccb->csio.dxfer_len; 917bcec64bcSEdward Tomasz Napierala } 918bcec64bcSEdward Tomasz Napierala } 919bcec64bcSEdward Tomasz Napierala 92073e2e95dSAlexander Motin received = io->io_received; 921c215ad3aSAlexander Motin iscsi_outstanding_remove(is, io); 922c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 923c215ad3aSAlexander Motin 924009ea47eSEdward Tomasz Napierala if (bhssr->bhssr_response != BHSSR_RESPONSE_COMMAND_COMPLETED) { 925009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "service response 0x%x", bhssr->bhssr_response); 92673e2e95dSAlexander Motin if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 92773e2e95dSAlexander Motin xpt_freeze_devq(ccb->ccb_h.path, 1); 928009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 929009ea47eSEdward Tomasz Napierala } 93073e2e95dSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP_ERR | CAM_DEV_QFRZN; 931009ea47eSEdward Tomasz Napierala } else if (bhssr->bhssr_status == 0) { 93273e2e95dSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP; 933009ea47eSEdward Tomasz Napierala } else { 93473e2e95dSAlexander Motin if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 93573e2e95dSAlexander Motin xpt_freeze_devq(ccb->ccb_h.path, 1); 936009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 937009ea47eSEdward Tomasz Napierala } 93873e2e95dSAlexander Motin ccb->ccb_h.status = CAM_SCSI_STATUS_ERROR | CAM_DEV_QFRZN; 93973e2e95dSAlexander Motin ccb->csio.scsi_status = bhssr->bhssr_status; 940009ea47eSEdward Tomasz Napierala } 941009ea47eSEdward Tomasz Napierala 94273e2e95dSAlexander Motin csio = &ccb->csio; 943009ea47eSEdward Tomasz Napierala data_segment_len = icl_pdu_data_segment_length(response); 944009ea47eSEdward Tomasz Napierala if (data_segment_len > 0) { 945009ea47eSEdward Tomasz Napierala if (data_segment_len < sizeof(sense_len)) { 946009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "truncated data segment (%zd bytes)", 947009ea47eSEdward Tomasz Napierala data_segment_len); 94873e2e95dSAlexander Motin if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 94973e2e95dSAlexander Motin xpt_freeze_devq(ccb->ccb_h.path, 1); 950009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 951009ea47eSEdward Tomasz Napierala } 95273e2e95dSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP_ERR | CAM_DEV_QFRZN; 953009ea47eSEdward Tomasz Napierala goto out; 954009ea47eSEdward Tomasz Napierala } 955009ea47eSEdward Tomasz Napierala icl_pdu_get_data(response, 0, &sense_len, sizeof(sense_len)); 956009ea47eSEdward Tomasz Napierala sense_len = ntohs(sense_len); 957009ea47eSEdward Tomasz Napierala #if 0 958009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "sense_len %d, data len %zd", 959009ea47eSEdward Tomasz Napierala sense_len, data_segment_len); 960009ea47eSEdward Tomasz Napierala #endif 961009ea47eSEdward Tomasz Napierala if (sizeof(sense_len) + sense_len > data_segment_len) { 962009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "truncated data segment " 963009ea47eSEdward Tomasz Napierala "(%zd bytes, should be %zd)", 964009ea47eSEdward Tomasz Napierala data_segment_len, sizeof(sense_len) + sense_len); 96573e2e95dSAlexander Motin if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 96673e2e95dSAlexander Motin xpt_freeze_devq(ccb->ccb_h.path, 1); 967009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 968009ea47eSEdward Tomasz Napierala } 96973e2e95dSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP_ERR | CAM_DEV_QFRZN; 970009ea47eSEdward Tomasz Napierala goto out; 971009ea47eSEdward Tomasz Napierala } else if (sizeof(sense_len) + sense_len < data_segment_len) 972009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "oversize data segment " 973009ea47eSEdward Tomasz Napierala "(%zd bytes, should be %zd)", 974009ea47eSEdward Tomasz Napierala data_segment_len, sizeof(sense_len) + sense_len); 975009ea47eSEdward Tomasz Napierala if (sense_len > csio->sense_len) { 976009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "truncating sense from %d to %d", 977009ea47eSEdward Tomasz Napierala sense_len, csio->sense_len); 978009ea47eSEdward Tomasz Napierala sense_len = csio->sense_len; 979009ea47eSEdward Tomasz Napierala } 980009ea47eSEdward Tomasz Napierala icl_pdu_get_data(response, sizeof(sense_len), &csio->sense_data, sense_len); 981009ea47eSEdward Tomasz Napierala csio->sense_resid = csio->sense_len - sense_len; 98273e2e95dSAlexander Motin ccb->ccb_h.status |= CAM_AUTOSNS_VALID; 983009ea47eSEdward Tomasz Napierala } 984009ea47eSEdward Tomasz Napierala 985009ea47eSEdward Tomasz Napierala out: 986009ea47eSEdward Tomasz Napierala if (bhssr->bhssr_flags & BHSSR_FLAGS_RESIDUAL_UNDERFLOW) 987009ea47eSEdward Tomasz Napierala csio->resid = ntohl(bhssr->bhssr_residual_count); 988009ea47eSEdward Tomasz Napierala 989009ea47eSEdward Tomasz Napierala if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) { 99073e2e95dSAlexander Motin KASSERT(received <= csio->dxfer_len, 99173e2e95dSAlexander Motin ("received > csio->dxfer_len")); 99273e2e95dSAlexander Motin if (received < csio->dxfer_len) { 99373e2e95dSAlexander Motin if (csio->resid != csio->dxfer_len - received) { 994009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "underflow mismatch: " 995009ea47eSEdward Tomasz Napierala "target indicates %d, we calculated %zd", 99673e2e95dSAlexander Motin csio->resid, csio->dxfer_len - received); 997009ea47eSEdward Tomasz Napierala } 99873e2e95dSAlexander Motin csio->resid = csio->dxfer_len - received; 999009ea47eSEdward Tomasz Napierala } 1000009ea47eSEdward Tomasz Napierala } 1001009ea47eSEdward Tomasz Napierala 100273e2e95dSAlexander Motin xpt_done(ccb); 1003009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1004009ea47eSEdward Tomasz Napierala } 1005009ea47eSEdward Tomasz Napierala 1006009ea47eSEdward Tomasz Napierala static void 1007aa75114cSAlexander Motin iscsi_pdu_handle_task_response(struct icl_pdu *response) 1008aa75114cSAlexander Motin { 1009aa75114cSAlexander Motin struct iscsi_bhs_task_management_response *bhstmr; 1010aa75114cSAlexander Motin struct iscsi_outstanding *io, *aio; 1011aa75114cSAlexander Motin struct iscsi_session *is; 1012aa75114cSAlexander Motin 1013aa75114cSAlexander Motin is = PDU_SESSION(response); 1014aa75114cSAlexander Motin 1015aa75114cSAlexander Motin bhstmr = (struct iscsi_bhs_task_management_response *)response->ip_bhs; 1016aa75114cSAlexander Motin io = iscsi_outstanding_find(is, bhstmr->bhstmr_initiator_task_tag); 1017aa75114cSAlexander Motin if (io == NULL || io->io_ccb != NULL) { 1018aa75114cSAlexander Motin ISCSI_SESSION_WARN(is, "bad itt 0x%x", 1019aa75114cSAlexander Motin bhstmr->bhstmr_initiator_task_tag); 1020aa75114cSAlexander Motin icl_pdu_free(response); 1021aa75114cSAlexander Motin iscsi_session_reconnect(is); 1022aa75114cSAlexander Motin return; 1023aa75114cSAlexander Motin } 1024aa75114cSAlexander Motin 1025aa75114cSAlexander Motin if (bhstmr->bhstmr_response != BHSTMR_RESPONSE_FUNCTION_COMPLETE) { 1026aa75114cSAlexander Motin ISCSI_SESSION_WARN(is, "task response 0x%x", 1027aa75114cSAlexander Motin bhstmr->bhstmr_response); 1028aa75114cSAlexander Motin } else { 10293dd2a7a5SAlexander Motin aio = iscsi_outstanding_find(is, io->io_referenced_task_tag); 1030aa75114cSAlexander Motin if (aio != NULL && aio->io_ccb != NULL) 1031ad10496cSAndriy Gapon iscsi_session_terminate_task(is, aio, CAM_REQ_ABORTED); 1032aa75114cSAlexander Motin } 1033aa75114cSAlexander Motin 1034aa75114cSAlexander Motin iscsi_outstanding_remove(is, io); 1035aa75114cSAlexander Motin icl_pdu_free(response); 1036aa75114cSAlexander Motin } 1037aa75114cSAlexander Motin 1038aa75114cSAlexander Motin static void 1039009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_data_in(struct icl_pdu *response) 1040009ea47eSEdward Tomasz Napierala { 1041009ea47eSEdward Tomasz Napierala struct iscsi_bhs_data_in *bhsdi; 1042009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io; 1043009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 104473e2e95dSAlexander Motin union ccb *ccb; 1045009ea47eSEdward Tomasz Napierala struct ccb_scsiio *csio; 104673e2e95dSAlexander Motin size_t data_segment_len, received, oreceived; 1047009ea47eSEdward Tomasz Napierala 1048009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 1049009ea47eSEdward Tomasz Napierala bhsdi = (struct iscsi_bhs_data_in *)response->ip_bhs; 1050009ea47eSEdward Tomasz Napierala io = iscsi_outstanding_find(is, bhsdi->bhsdi_initiator_task_tag); 1051aa75114cSAlexander Motin if (io == NULL || io->io_ccb == NULL) { 1052009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "bad itt 0x%x", bhsdi->bhsdi_initiator_task_tag); 1053009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1054009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1055c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 1056009ea47eSEdward Tomasz Napierala return; 1057009ea47eSEdward Tomasz Napierala } 1058009ea47eSEdward Tomasz Napierala 1059*4f0f5bf9SJohn Baldwin if (io->io_datasn != ntohl(bhsdi->bhsdi_datasn)) { 1060*4f0f5bf9SJohn Baldwin ISCSI_SESSION_WARN(is, "received Data-In PDU with " 1061*4f0f5bf9SJohn Baldwin "DataSN %u, while expected %u; dropping connection", 1062*4f0f5bf9SJohn Baldwin ntohl(bhsdi->bhsdi_datasn), io->io_datasn); 1063*4f0f5bf9SJohn Baldwin icl_pdu_free(response); 1064*4f0f5bf9SJohn Baldwin iscsi_session_reconnect(is); 1065*4f0f5bf9SJohn Baldwin ISCSI_SESSION_UNLOCK(is); 1066*4f0f5bf9SJohn Baldwin return; 1067*4f0f5bf9SJohn Baldwin } 1068*4f0f5bf9SJohn Baldwin io->io_datasn += response->ip_additional_pdus + 1; 1069*4f0f5bf9SJohn Baldwin 1070009ea47eSEdward Tomasz Napierala data_segment_len = icl_pdu_data_segment_length(response); 1071009ea47eSEdward Tomasz Napierala if (data_segment_len == 0) { 1072009ea47eSEdward Tomasz Napierala /* 1073009ea47eSEdward Tomasz Napierala * "The sending of 0 length data segments should be avoided, 1074009ea47eSEdward Tomasz Napierala * but initiators and targets MUST be able to properly receive 1075009ea47eSEdward Tomasz Napierala * 0 length data segments." 1076009ea47eSEdward Tomasz Napierala */ 1077c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 1078009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1079009ea47eSEdward Tomasz Napierala return; 1080009ea47eSEdward Tomasz Napierala } 1081009ea47eSEdward Tomasz Napierala 1082009ea47eSEdward Tomasz Napierala /* 1083009ea47eSEdward Tomasz Napierala * We need to track this for security reasons - without it, malicious target 1084009ea47eSEdward Tomasz Napierala * could respond to SCSI READ without sending Data-In PDUs, which would result 1085009ea47eSEdward Tomasz Napierala * in read operation on the initiator side returning random kernel data. 1086009ea47eSEdward Tomasz Napierala */ 1087009ea47eSEdward Tomasz Napierala if (ntohl(bhsdi->bhsdi_buffer_offset) != io->io_received) { 1088009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "data out of order; expected offset %zd, got %zd", 1089009ea47eSEdward Tomasz Napierala io->io_received, (size_t)ntohl(bhsdi->bhsdi_buffer_offset)); 1090009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1091009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1092c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 1093009ea47eSEdward Tomasz Napierala return; 1094009ea47eSEdward Tomasz Napierala } 1095009ea47eSEdward Tomasz Napierala 109673e2e95dSAlexander Motin ccb = io->io_ccb; 109773e2e95dSAlexander Motin csio = &ccb->csio; 1098009ea47eSEdward Tomasz Napierala 1099d43c9ec1SEdward Tomasz Napierala if (io->io_received + data_segment_len > csio->dxfer_len) { 1100009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "oversize data segment (%zd bytes " 1101d43c9ec1SEdward Tomasz Napierala "at offset %zd, buffer is %d)", 1102d43c9ec1SEdward Tomasz Napierala data_segment_len, io->io_received, csio->dxfer_len); 1103009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1104009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1105c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 1106009ea47eSEdward Tomasz Napierala return; 1107009ea47eSEdward Tomasz Napierala } 1108009ea47eSEdward Tomasz Napierala 110973e2e95dSAlexander Motin oreceived = io->io_received; 1110009ea47eSEdward Tomasz Napierala io->io_received += data_segment_len; 111173e2e95dSAlexander Motin received = io->io_received; 1112c215ad3aSAlexander Motin if ((bhsdi->bhsdi_flags & BHSDI_FLAGS_S) != 0) 1113c215ad3aSAlexander Motin iscsi_outstanding_remove(is, io); 1114c215ad3aSAlexander Motin ISCSI_SESSION_UNLOCK(is); 1115c215ad3aSAlexander Motin 111673e2e95dSAlexander Motin icl_pdu_get_data(response, 0, csio->data_ptr + oreceived, data_segment_len); 1117009ea47eSEdward Tomasz Napierala 1118009ea47eSEdward Tomasz Napierala /* 1119009ea47eSEdward Tomasz Napierala * XXX: Check F. 1120009ea47eSEdward Tomasz Napierala */ 112169647b7bSEdward Tomasz Napierala if ((bhsdi->bhsdi_flags & BHSDI_FLAGS_S) == 0) { 112269647b7bSEdward Tomasz Napierala /* 112369647b7bSEdward Tomasz Napierala * Nothing more to do. 112469647b7bSEdward Tomasz Napierala */ 112569647b7bSEdward Tomasz Napierala icl_pdu_free(response); 112669647b7bSEdward Tomasz Napierala return; 112769647b7bSEdward Tomasz Napierala } 112869647b7bSEdward Tomasz Napierala 1129009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "got S flag; status 0x%x", bhsdi->bhsdi_status); 1130009ea47eSEdward Tomasz Napierala if (bhsdi->bhsdi_status == 0) { 113173e2e95dSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP; 1132009ea47eSEdward Tomasz Napierala } else { 113373e2e95dSAlexander Motin if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 113473e2e95dSAlexander Motin xpt_freeze_devq(ccb->ccb_h.path, 1); 1135009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 1136009ea47eSEdward Tomasz Napierala } 113773e2e95dSAlexander Motin ccb->ccb_h.status = CAM_SCSI_STATUS_ERROR | CAM_DEV_QFRZN; 1138009ea47eSEdward Tomasz Napierala csio->scsi_status = bhsdi->bhsdi_status; 1139009ea47eSEdward Tomasz Napierala } 114069647b7bSEdward Tomasz Napierala 114169647b7bSEdward Tomasz Napierala if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) { 114273e2e95dSAlexander Motin KASSERT(received <= csio->dxfer_len, 114373e2e95dSAlexander Motin ("received > csio->dxfer_len")); 114473e2e95dSAlexander Motin if (received < csio->dxfer_len) { 114569647b7bSEdward Tomasz Napierala csio->resid = ntohl(bhsdi->bhsdi_residual_count); 114673e2e95dSAlexander Motin if (csio->resid != csio->dxfer_len - received) { 114769647b7bSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "underflow mismatch: " 114869647b7bSEdward Tomasz Napierala "target indicates %d, we calculated %zd", 114973e2e95dSAlexander Motin csio->resid, csio->dxfer_len - received); 115069647b7bSEdward Tomasz Napierala } 115173e2e95dSAlexander Motin csio->resid = csio->dxfer_len - received; 115269647b7bSEdward Tomasz Napierala } 1153009ea47eSEdward Tomasz Napierala } 1154009ea47eSEdward Tomasz Napierala 115573e2e95dSAlexander Motin xpt_done(ccb); 1156009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1157009ea47eSEdward Tomasz Napierala } 1158009ea47eSEdward Tomasz Napierala 1159009ea47eSEdward Tomasz Napierala static void 1160009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_logout_response(struct icl_pdu *response) 1161009ea47eSEdward Tomasz Napierala { 1162009ea47eSEdward Tomasz Napierala 1163009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(PDU_SESSION(response), "logout response"); 1164009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1165009ea47eSEdward Tomasz Napierala } 1166009ea47eSEdward Tomasz Napierala 1167009ea47eSEdward Tomasz Napierala static void 1168009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_r2t(struct icl_pdu *response) 1169009ea47eSEdward Tomasz Napierala { 1170009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 1171009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1172009ea47eSEdward Tomasz Napierala struct iscsi_bhs_r2t *bhsr2t; 1173009ea47eSEdward Tomasz Napierala struct iscsi_bhs_data_out *bhsdo; 1174009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io; 1175009ea47eSEdward Tomasz Napierala struct ccb_scsiio *csio; 1176f0594f52SJohn Baldwin size_t off, len, max_send_data_segment_length, total_len; 1177009ea47eSEdward Tomasz Napierala int error; 11783dd2a7a5SAlexander Motin uint32_t datasn = 0; 1179009ea47eSEdward Tomasz Napierala 1180009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 1181009ea47eSEdward Tomasz Napierala 1182009ea47eSEdward Tomasz Napierala bhsr2t = (struct iscsi_bhs_r2t *)response->ip_bhs; 1183009ea47eSEdward Tomasz Napierala io = iscsi_outstanding_find(is, bhsr2t->bhsr2t_initiator_task_tag); 1184aa75114cSAlexander Motin if (io == NULL || io->io_ccb == NULL) { 1185009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "bad itt 0x%x; reconnecting", 1186009ea47eSEdward Tomasz Napierala bhsr2t->bhsr2t_initiator_task_tag); 1187009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1188009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1189009ea47eSEdward Tomasz Napierala return; 1190009ea47eSEdward Tomasz Napierala } 1191009ea47eSEdward Tomasz Napierala 1192009ea47eSEdward Tomasz Napierala csio = &io->io_ccb->csio; 1193009ea47eSEdward Tomasz Napierala 1194009ea47eSEdward Tomasz Napierala if ((csio->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_OUT) { 1195009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "received R2T for read command; reconnecting"); 1196009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1197009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1198009ea47eSEdward Tomasz Napierala return; 1199009ea47eSEdward Tomasz Napierala } 1200009ea47eSEdward Tomasz Napierala 1201009ea47eSEdward Tomasz Napierala /* 1202009ea47eSEdward Tomasz Napierala * XXX: Verify R2TSN. 1203009ea47eSEdward Tomasz Napierala */ 1204009ea47eSEdward Tomasz Napierala 1205009ea47eSEdward Tomasz Napierala off = ntohl(bhsr2t->bhsr2t_buffer_offset); 1206d43c9ec1SEdward Tomasz Napierala if (off > csio->dxfer_len) { 1207d43c9ec1SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target requested invalid offset " 1208d43c9ec1SEdward Tomasz Napierala "%zd, buffer is is %d; reconnecting", off, csio->dxfer_len); 1209d43c9ec1SEdward Tomasz Napierala icl_pdu_free(response); 1210d43c9ec1SEdward Tomasz Napierala iscsi_session_reconnect(is); 1211d43c9ec1SEdward Tomasz Napierala return; 1212d43c9ec1SEdward Tomasz Napierala } 1213d43c9ec1SEdward Tomasz Napierala 1214009ea47eSEdward Tomasz Napierala total_len = ntohl(bhsr2t->bhsr2t_desired_data_transfer_length); 1215d43c9ec1SEdward Tomasz Napierala if (total_len == 0 || total_len > csio->dxfer_len) { 1216d43c9ec1SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target requested invalid length " 1217d43c9ec1SEdward Tomasz Napierala "%zd, buffer is %d; reconnecting", total_len, csio->dxfer_len); 1218d43c9ec1SEdward Tomasz Napierala icl_pdu_free(response); 1219d43c9ec1SEdward Tomasz Napierala iscsi_session_reconnect(is); 1220d43c9ec1SEdward Tomasz Napierala return; 1221d43c9ec1SEdward Tomasz Napierala } 1222009ea47eSEdward Tomasz Napierala 1223009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "r2t; off %zd, len %zd", off, total_len); 1224009ea47eSEdward Tomasz Napierala 1225f0594f52SJohn Baldwin if (is->is_conn->ic_hw_isomax != 0) 1226f0594f52SJohn Baldwin max_send_data_segment_length = is->is_conn->ic_hw_isomax; 1227f0594f52SJohn Baldwin else 1228f0594f52SJohn Baldwin max_send_data_segment_length = 1229f0594f52SJohn Baldwin is->is_conn->ic_max_send_data_segment_length; 1230009ea47eSEdward Tomasz Napierala for (;;) { 1231009ea47eSEdward Tomasz Napierala len = total_len; 1232009ea47eSEdward Tomasz Napierala 1233f0594f52SJohn Baldwin if (len > max_send_data_segment_length) 1234f0594f52SJohn Baldwin len = max_send_data_segment_length; 1235009ea47eSEdward Tomasz Napierala 1236009ea47eSEdward Tomasz Napierala if (off + len > csio->dxfer_len) { 1237d43c9ec1SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target requested invalid " 1238d43c9ec1SEdward Tomasz Napierala "length/offset %zd, buffer is %d; reconnecting", 1239009ea47eSEdward Tomasz Napierala off + len, csio->dxfer_len); 1240009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1241009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1242009ea47eSEdward Tomasz Napierala return; 1243009ea47eSEdward Tomasz Napierala } 1244009ea47eSEdward Tomasz Napierala 1245d2d52b00SEdward Tomasz Napierala request = icl_pdu_new(response->ip_conn, M_NOWAIT); 1246009ea47eSEdward Tomasz Napierala if (request == NULL) { 1247009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1248009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1249009ea47eSEdward Tomasz Napierala return; 1250009ea47eSEdward Tomasz Napierala } 1251009ea47eSEdward Tomasz Napierala 1252009ea47eSEdward Tomasz Napierala bhsdo = (struct iscsi_bhs_data_out *)request->ip_bhs; 1253009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_opcode = ISCSI_BHS_OPCODE_SCSI_DATA_OUT; 1254009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_lun = bhsr2t->bhsr2t_lun; 1255009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_initiator_task_tag = 1256009ea47eSEdward Tomasz Napierala bhsr2t->bhsr2t_initiator_task_tag; 1257009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_target_transfer_tag = 1258009ea47eSEdward Tomasz Napierala bhsr2t->bhsr2t_target_transfer_tag; 1259f0594f52SJohn Baldwin bhsdo->bhsdo_datasn = htonl(datasn); 1260009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_buffer_offset = htonl(off); 1261d43c9ec1SEdward Tomasz Napierala error = icl_pdu_append_data(request, csio->data_ptr + off, len, 1262d43c9ec1SEdward Tomasz Napierala M_NOWAIT); 1263009ea47eSEdward Tomasz Napierala if (error != 0) { 1264d43c9ec1SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate memory; " 1265d43c9ec1SEdward Tomasz Napierala "reconnecting"); 1266009ea47eSEdward Tomasz Napierala icl_pdu_free(request); 1267009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1268009ea47eSEdward Tomasz Napierala iscsi_session_reconnect(is); 1269009ea47eSEdward Tomasz Napierala return; 1270009ea47eSEdward Tomasz Napierala } 1271009ea47eSEdward Tomasz Napierala 1272f0594f52SJohn Baldwin datasn += howmany(len, 1273f0594f52SJohn Baldwin is->is_conn->ic_max_send_data_segment_length); 1274009ea47eSEdward Tomasz Napierala off += len; 1275009ea47eSEdward Tomasz Napierala total_len -= len; 1276009ea47eSEdward Tomasz Napierala 1277009ea47eSEdward Tomasz Napierala if (total_len == 0) { 1278009ea47eSEdward Tomasz Napierala bhsdo->bhsdo_flags |= BHSDO_FLAGS_F; 1279009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "setting F, off %zd", off); 1280009ea47eSEdward Tomasz Napierala } else { 1281009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "not finished, off %zd", off); 1282009ea47eSEdward Tomasz Napierala } 1283009ea47eSEdward Tomasz Napierala 1284009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(request); 1285009ea47eSEdward Tomasz Napierala 1286009ea47eSEdward Tomasz Napierala if (total_len == 0) 1287009ea47eSEdward Tomasz Napierala break; 1288009ea47eSEdward Tomasz Napierala } 1289009ea47eSEdward Tomasz Napierala 1290009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1291009ea47eSEdward Tomasz Napierala } 1292009ea47eSEdward Tomasz Napierala 1293009ea47eSEdward Tomasz Napierala static void 1294009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_async_message(struct icl_pdu *response) 1295009ea47eSEdward Tomasz Napierala { 1296009ea47eSEdward Tomasz Napierala struct iscsi_bhs_asynchronous_message *bhsam; 1297009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1298009ea47eSEdward Tomasz Napierala 1299009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 1300009ea47eSEdward Tomasz Napierala bhsam = (struct iscsi_bhs_asynchronous_message *)response->ip_bhs; 1301009ea47eSEdward Tomasz Napierala switch (bhsam->bhsam_async_event) { 1302009ea47eSEdward Tomasz Napierala case BHSAM_EVENT_TARGET_REQUESTS_LOGOUT: 1303009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target requests logout; removing session"); 1304009ea47eSEdward Tomasz Napierala iscsi_session_logout(is); 1305009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1306009ea47eSEdward Tomasz Napierala break; 1307009ea47eSEdward Tomasz Napierala case BHSAM_EVENT_TARGET_TERMINATES_CONNECTION: 13086960c4e1SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target indicates it will drop the connection"); 1309009ea47eSEdward Tomasz Napierala break; 1310009ea47eSEdward Tomasz Napierala case BHSAM_EVENT_TARGET_TERMINATES_SESSION: 13116960c4e1SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "target indicates it will drop the session"); 1312009ea47eSEdward Tomasz Napierala break; 1313009ea47eSEdward Tomasz Napierala default: 1314009ea47eSEdward Tomasz Napierala /* 1315009ea47eSEdward Tomasz Napierala * XXX: Technically, we're obligated to also handle 1316009ea47eSEdward Tomasz Napierala * parameter renegotiation. 1317009ea47eSEdward Tomasz Napierala */ 1318009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "ignoring AsyncEvent %d", bhsam->bhsam_async_event); 1319009ea47eSEdward Tomasz Napierala break; 1320009ea47eSEdward Tomasz Napierala } 1321009ea47eSEdward Tomasz Napierala 1322009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1323009ea47eSEdward Tomasz Napierala } 1324009ea47eSEdward Tomasz Napierala 1325009ea47eSEdward Tomasz Napierala static void 1326009ea47eSEdward Tomasz Napierala iscsi_pdu_handle_reject(struct icl_pdu *response) 1327009ea47eSEdward Tomasz Napierala { 1328009ea47eSEdward Tomasz Napierala struct iscsi_bhs_reject *bhsr; 1329009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1330009ea47eSEdward Tomasz Napierala 1331009ea47eSEdward Tomasz Napierala is = PDU_SESSION(response); 1332009ea47eSEdward Tomasz Napierala bhsr = (struct iscsi_bhs_reject *)response->ip_bhs; 1333009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "received Reject PDU, reason 0x%x; protocol error?", 1334009ea47eSEdward Tomasz Napierala bhsr->bhsr_reason); 1335009ea47eSEdward Tomasz Napierala 1336009ea47eSEdward Tomasz Napierala icl_pdu_free(response); 1337009ea47eSEdward Tomasz Napierala } 1338009ea47eSEdward Tomasz Napierala 1339009ea47eSEdward Tomasz Napierala static int 1340009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_wait(struct iscsi_softc *sc, 1341009ea47eSEdward Tomasz Napierala struct iscsi_daemon_request *request) 1342009ea47eSEdward Tomasz Napierala { 1343009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 134497b84d34SNavdeep Parhar struct icl_drv_limits idl; 1345009ea47eSEdward Tomasz Napierala int error; 1346009ea47eSEdward Tomasz Napierala 1347009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1348009ea47eSEdward Tomasz Napierala for (;;) { 1349009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 13502be596adSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1351ba165a31SEdward Tomasz Napierala if (is->is_conf.isc_enable == 0 && 1352ba165a31SEdward Tomasz Napierala is->is_conf.isc_discovery == 0) { 1353ba165a31SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1354ba165a31SEdward Tomasz Napierala continue; 1355ba165a31SEdward Tomasz Napierala } 1356009ea47eSEdward Tomasz Napierala if (is->is_waiting_for_iscsid) 1357009ea47eSEdward Tomasz Napierala break; 13582be596adSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1359009ea47eSEdward Tomasz Napierala } 1360009ea47eSEdward Tomasz Napierala 1361009ea47eSEdward Tomasz Napierala if (is == NULL) { 136289df4847SJohn Baldwin if (sc->sc_unloading) { 136389df4847SJohn Baldwin sx_sunlock(&sc->sc_lock); 136489df4847SJohn Baldwin return (ENXIO); 136589df4847SJohn Baldwin } 136689df4847SJohn Baldwin 1367009ea47eSEdward Tomasz Napierala /* 1368009ea47eSEdward Tomasz Napierala * No session requires attention from iscsid(8); wait. 1369009ea47eSEdward Tomasz Napierala */ 1370009ea47eSEdward Tomasz Napierala error = cv_wait_sig(&sc->sc_cv, &sc->sc_lock); 1371009ea47eSEdward Tomasz Napierala if (error != 0) { 1372009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1373009ea47eSEdward Tomasz Napierala return (error); 1374009ea47eSEdward Tomasz Napierala } 1375009ea47eSEdward Tomasz Napierala continue; 1376009ea47eSEdward Tomasz Napierala } 1377009ea47eSEdward Tomasz Napierala 1378009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = false; 1379009ea47eSEdward Tomasz Napierala is->is_login_phase = true; 1380009ea47eSEdward Tomasz Napierala is->is_reason[0] = '\0'; 1381009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1382009ea47eSEdward Tomasz Napierala 1383009ea47eSEdward Tomasz Napierala request->idr_session_id = is->is_id; 1384ffe82e05SAlexander Motin memcpy(&request->idr_isid, &is->is_isid, 1385ffe82e05SAlexander Motin sizeof(request->idr_isid)); 1386ffe82e05SAlexander Motin request->idr_tsih = 0; /* New or reinstated session. */ 1387009ea47eSEdward Tomasz Napierala memcpy(&request->idr_conf, &is->is_conf, 1388009ea47eSEdward Tomasz Napierala sizeof(request->idr_conf)); 1389009ea47eSEdward Tomasz Napierala 139082babffbSEdward Tomasz Napierala error = icl_limits(is->is_conf.isc_offload, 139197b84d34SNavdeep Parhar is->is_conf.isc_iser, &idl); 139282babffbSEdward Tomasz Napierala if (error != 0) { 139382babffbSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "icl_limits for offload \"%s\" " 139482babffbSEdward Tomasz Napierala "failed with error %d", is->is_conf.isc_offload, 139582babffbSEdward Tomasz Napierala error); 139682babffbSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 139782babffbSEdward Tomasz Napierala return (error); 139882babffbSEdward Tomasz Napierala } 139997b84d34SNavdeep Parhar request->idr_limits.isl_max_recv_data_segment_length = 140097b84d34SNavdeep Parhar idl.idl_max_recv_data_segment_length; 140197b84d34SNavdeep Parhar request->idr_limits.isl_max_send_data_segment_length = 140248214203SNavdeep Parhar idl.idl_max_send_data_segment_length; 140397b84d34SNavdeep Parhar request->idr_limits.isl_max_burst_length = 140497b84d34SNavdeep Parhar idl.idl_max_burst_length; 140597b84d34SNavdeep Parhar request->idr_limits.isl_first_burst_length = 140697b84d34SNavdeep Parhar idl.idl_first_burst_length; 140782babffbSEdward Tomasz Napierala 1408009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1409009ea47eSEdward Tomasz Napierala return (0); 1410009ea47eSEdward Tomasz Napierala } 1411009ea47eSEdward Tomasz Napierala } 1412009ea47eSEdward Tomasz Napierala 1413009ea47eSEdward Tomasz Napierala static int 1414009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_handoff(struct iscsi_softc *sc, 1415009ea47eSEdward Tomasz Napierala struct iscsi_daemon_handoff *handoff) 1416009ea47eSEdward Tomasz Napierala { 1417009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1418f5cadbc4SNavdeep Parhar struct icl_conn *ic; 1419009ea47eSEdward Tomasz Napierala int error; 1420009ea47eSEdward Tomasz Napierala 1421009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1422009ea47eSEdward Tomasz Napierala 1423009ea47eSEdward Tomasz Napierala /* 1424009ea47eSEdward Tomasz Napierala * Find the session to hand off socket to. 1425009ea47eSEdward Tomasz Napierala */ 1426009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1427009ea47eSEdward Tomasz Napierala if (is->is_id == handoff->idh_session_id) 1428009ea47eSEdward Tomasz Napierala break; 1429009ea47eSEdward Tomasz Napierala } 1430009ea47eSEdward Tomasz Napierala if (is == NULL) { 1431009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1432009ea47eSEdward Tomasz Napierala return (ESRCH); 1433009ea47eSEdward Tomasz Napierala } 1434009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1435f5cadbc4SNavdeep Parhar ic = is->is_conn; 1436009ea47eSEdward Tomasz Napierala if (is->is_conf.isc_discovery || is->is_terminating) { 1437009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1438009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1439009ea47eSEdward Tomasz Napierala return (EINVAL); 1440009ea47eSEdward Tomasz Napierala } 14410260023fSEdward Tomasz Napierala if (is->is_connected) { 14420260023fSEdward Tomasz Napierala /* 14430260023fSEdward Tomasz Napierala * This might have happened because another iscsid(8) 14440260023fSEdward Tomasz Napierala * instance handed off the connection in the meantime. 14450260023fSEdward Tomasz Napierala * Just return. 14460260023fSEdward Tomasz Napierala */ 14470260023fSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "handoff on already connected " 14480260023fSEdward Tomasz Napierala "session"); 14490260023fSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 14500260023fSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 14510260023fSEdward Tomasz Napierala return (EBUSY); 14520260023fSEdward Tomasz Napierala } 1453009ea47eSEdward Tomasz Napierala 1454009ea47eSEdward Tomasz Napierala strlcpy(is->is_target_alias, handoff->idh_target_alias, 1455009ea47eSEdward Tomasz Napierala sizeof(is->is_target_alias)); 1456ffe82e05SAlexander Motin is->is_tsih = handoff->idh_tsih; 1457009ea47eSEdward Tomasz Napierala is->is_statsn = handoff->idh_statsn; 14587dbbd1aeSAlexander Motin is->is_protocol_level = handoff->idh_protocol_level; 1459009ea47eSEdward Tomasz Napierala is->is_initial_r2t = handoff->idh_initial_r2t; 1460009ea47eSEdward Tomasz Napierala is->is_immediate_data = handoff->idh_immediate_data; 1461c8b73c2cSNavdeep Parhar 14620cc7d64aSJohn Baldwin ic->ic_max_recv_data_segment_length = 146397b84d34SNavdeep Parhar handoff->idh_max_recv_data_segment_length; 14640cc7d64aSJohn Baldwin ic->ic_max_send_data_segment_length = 146597b84d34SNavdeep Parhar handoff->idh_max_send_data_segment_length; 1466009ea47eSEdward Tomasz Napierala is->is_max_burst_length = handoff->idh_max_burst_length; 1467009ea47eSEdward Tomasz Napierala is->is_first_burst_length = handoff->idh_first_burst_length; 1468009ea47eSEdward Tomasz Napierala 1469009ea47eSEdward Tomasz Napierala if (handoff->idh_header_digest == ISCSI_DIGEST_CRC32C) 1470f5cadbc4SNavdeep Parhar ic->ic_header_crc32c = true; 1471009ea47eSEdward Tomasz Napierala else 1472f5cadbc4SNavdeep Parhar ic->ic_header_crc32c = false; 1473009ea47eSEdward Tomasz Napierala if (handoff->idh_data_digest == ISCSI_DIGEST_CRC32C) 1474f5cadbc4SNavdeep Parhar ic->ic_data_crc32c = true; 1475009ea47eSEdward Tomasz Napierala else 1476f5cadbc4SNavdeep Parhar ic->ic_data_crc32c = false; 1477b218ca6fSEdward Tomasz Napierala ic->ic_maxtags = maxtags; 1478009ea47eSEdward Tomasz Napierala 1479009ea47eSEdward Tomasz Napierala is->is_cmdsn = 0; 1480cf23c509SEdward Tomasz Napierala is->is_expcmdsn = 0; 1481cf23c509SEdward Tomasz Napierala is->is_maxcmdsn = 0; 1482009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = false; 1483009ea47eSEdward Tomasz Napierala is->is_login_phase = false; 1484009ea47eSEdward Tomasz Napierala is->is_timeout = 0; 1485009ea47eSEdward Tomasz Napierala is->is_connected = true; 1486009ea47eSEdward Tomasz Napierala is->is_reason[0] = '\0'; 1487009ea47eSEdward Tomasz Napierala 1488009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1489009ea47eSEdward Tomasz Napierala 149057a4f20bSEdward Tomasz Napierala /* 1491906a424bSEdward Tomasz Napierala * If we're going through the proxy, the idh_socket will be 0, 1492906a424bSEdward Tomasz Napierala * and the ICL module can simply ignore this call. It can also 1493906a424bSEdward Tomasz Napierala * use it to determine it's no longer in the Login phase. 149457a4f20bSEdward Tomasz Napierala */ 1495f5cadbc4SNavdeep Parhar error = icl_conn_handoff(ic, handoff->idh_socket); 1496009ea47eSEdward Tomasz Napierala if (error != 0) { 1497009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1498009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1499009ea47eSEdward Tomasz Napierala return (error); 1500009ea47eSEdward Tomasz Napierala } 1501009ea47eSEdward Tomasz Napierala 1502009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1503009ea47eSEdward Tomasz Napierala 1504009ea47eSEdward Tomasz Napierala if (is->is_sim != NULL) { 1505009ea47eSEdward Tomasz Napierala /* 1506009ea47eSEdward Tomasz Napierala * When reconnecting, there already is SIM allocated for the session. 1507009ea47eSEdward Tomasz Napierala */ 1508009ea47eSEdward Tomasz Napierala KASSERT(is->is_simq_frozen, ("reconnect without frozen simq")); 1509009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1510009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "releasing"); 1511009ea47eSEdward Tomasz Napierala is->is_simq_frozen = false; 1512186bcdaaSEdward Tomasz Napierala xpt_release_simq(is->is_sim, 1); 1513009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1514009ea47eSEdward Tomasz Napierala 1515009ea47eSEdward Tomasz Napierala } else { 1516009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1517b218ca6fSEdward Tomasz Napierala is->is_devq = cam_simq_alloc(ic->ic_maxtags); 1518009ea47eSEdward Tomasz Napierala if (is->is_devq == NULL) { 1519009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate simq"); 1520009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1521009ea47eSEdward Tomasz Napierala return (ENOMEM); 1522009ea47eSEdward Tomasz Napierala } 1523009ea47eSEdward Tomasz Napierala 152447769bc5SJohn Baldwin is->is_sim = cam_sim_alloc(iscsi_action, NULL, "iscsi", 1525009ea47eSEdward Tomasz Napierala is, is->is_id /* unit */, &is->is_lock, 1526b218ca6fSEdward Tomasz Napierala 1, ic->ic_maxtags, is->is_devq); 1527009ea47eSEdward Tomasz Napierala if (is->is_sim == NULL) { 1528009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1529009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate SIM"); 1530009ea47eSEdward Tomasz Napierala cam_simq_free(is->is_devq); 1531009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1532009ea47eSEdward Tomasz Napierala return (ENOMEM); 1533009ea47eSEdward Tomasz Napierala } 1534009ea47eSEdward Tomasz Napierala 153530f8afd0SWarner Losh if (xpt_bus_register(is->is_sim, NULL, 0) != 0) { 1536009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1537009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to register bus"); 1538009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1539009ea47eSEdward Tomasz Napierala return (ENOMEM); 1540009ea47eSEdward Tomasz Napierala } 1541009ea47eSEdward Tomasz Napierala 1542009ea47eSEdward Tomasz Napierala error = xpt_create_path(&is->is_path, /*periph*/NULL, 1543009ea47eSEdward Tomasz Napierala cam_sim_path(is->is_sim), CAM_TARGET_WILDCARD, 1544009ea47eSEdward Tomasz Napierala CAM_LUN_WILDCARD); 1545009ea47eSEdward Tomasz Napierala if (error != CAM_REQ_CMP) { 1546009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1547009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to create path"); 1548009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1549009ea47eSEdward Tomasz Napierala return (ENOMEM); 1550009ea47eSEdward Tomasz Napierala } 1551009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1552009ea47eSEdward Tomasz Napierala } 1553009ea47eSEdward Tomasz Napierala 1554009ea47eSEdward Tomasz Napierala return (0); 1555009ea47eSEdward Tomasz Napierala } 1556009ea47eSEdward Tomasz Napierala 1557009ea47eSEdward Tomasz Napierala static int 1558009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_fail(struct iscsi_softc *sc, 1559009ea47eSEdward Tomasz Napierala struct iscsi_daemon_fail *fail) 1560009ea47eSEdward Tomasz Napierala { 1561009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1562009ea47eSEdward Tomasz Napierala 1563009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1564009ea47eSEdward Tomasz Napierala 1565009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1566009ea47eSEdward Tomasz Napierala if (is->is_id == fail->idf_session_id) 1567009ea47eSEdward Tomasz Napierala break; 1568009ea47eSEdward Tomasz Napierala } 1569009ea47eSEdward Tomasz Napierala if (is == NULL) { 1570009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1571009ea47eSEdward Tomasz Napierala return (ESRCH); 1572009ea47eSEdward Tomasz Napierala } 1573009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1574009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "iscsid(8) failed: %s", 1575009ea47eSEdward Tomasz Napierala fail->idf_reason); 1576009ea47eSEdward Tomasz Napierala strlcpy(is->is_reason, fail->idf_reason, sizeof(is->is_reason)); 1577009ea47eSEdward Tomasz Napierala //is->is_waiting_for_iscsid = false; 1578009ea47eSEdward Tomasz Napierala //is->is_login_phase = true; 1579009ea47eSEdward Tomasz Napierala //iscsi_session_reconnect(is); 1580009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1581009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1582009ea47eSEdward Tomasz Napierala 1583009ea47eSEdward Tomasz Napierala return (0); 1584009ea47eSEdward Tomasz Napierala } 1585009ea47eSEdward Tomasz Napierala 1586009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 1587009ea47eSEdward Tomasz Napierala static int 1588009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_connect(struct iscsi_softc *sc, 1589009ea47eSEdward Tomasz Napierala struct iscsi_daemon_connect *idc) 1590009ea47eSEdward Tomasz Napierala { 1591009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1592009ea47eSEdward Tomasz Napierala struct sockaddr *from_sa, *to_sa; 1593009ea47eSEdward Tomasz Napierala int error; 1594009ea47eSEdward Tomasz Napierala 1595009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1596009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1597009ea47eSEdward Tomasz Napierala if (is->is_id == idc->idc_session_id) 1598009ea47eSEdward Tomasz Napierala break; 1599009ea47eSEdward Tomasz Napierala } 1600009ea47eSEdward Tomasz Napierala if (is == NULL) { 1601009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1602009ea47eSEdward Tomasz Napierala return (ESRCH); 1603009ea47eSEdward Tomasz Napierala } 1604009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1605009ea47eSEdward Tomasz Napierala 1606009ea47eSEdward Tomasz Napierala if (idc->idc_from_addrlen > 0) { 1607009ea47eSEdward Tomasz Napierala error = getsockaddr(&from_sa, (void *)idc->idc_from_addr, idc->idc_from_addrlen); 160857a4f20bSEdward Tomasz Napierala if (error != 0) { 160957a4f20bSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, 161057a4f20bSEdward Tomasz Napierala "getsockaddr failed with error %d", error); 1611009ea47eSEdward Tomasz Napierala return (error); 161257a4f20bSEdward Tomasz Napierala } 1613009ea47eSEdward Tomasz Napierala } else { 1614009ea47eSEdward Tomasz Napierala from_sa = NULL; 1615009ea47eSEdward Tomasz Napierala } 1616009ea47eSEdward Tomasz Napierala error = getsockaddr(&to_sa, (void *)idc->idc_to_addr, idc->idc_to_addrlen); 1617009ea47eSEdward Tomasz Napierala if (error != 0) { 161857a4f20bSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "getsockaddr failed with error %d", 161957a4f20bSEdward Tomasz Napierala error); 1620009ea47eSEdward Tomasz Napierala free(from_sa, M_SONAME); 1621009ea47eSEdward Tomasz Napierala return (error); 1622009ea47eSEdward Tomasz Napierala } 1623009ea47eSEdward Tomasz Napierala 1624009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1625a3fd63f2SEdward Tomasz Napierala is->is_statsn = 0; 1626a3fd63f2SEdward Tomasz Napierala is->is_cmdsn = 0; 1627a3fd63f2SEdward Tomasz Napierala is->is_expcmdsn = 0; 1628a3fd63f2SEdward Tomasz Napierala is->is_maxcmdsn = 0; 1629009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = false; 1630009ea47eSEdward Tomasz Napierala is->is_login_phase = true; 1631009ea47eSEdward Tomasz Napierala is->is_timeout = 0; 1632009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1633009ea47eSEdward Tomasz Napierala 1634f41492b0SEdward Tomasz Napierala error = icl_conn_connect(is->is_conn, idc->idc_domain, 1635009ea47eSEdward Tomasz Napierala idc->idc_socktype, idc->idc_protocol, from_sa, to_sa); 1636009ea47eSEdward Tomasz Napierala free(from_sa, M_SONAME); 1637009ea47eSEdward Tomasz Napierala free(to_sa, M_SONAME); 1638009ea47eSEdward Tomasz Napierala 1639009ea47eSEdward Tomasz Napierala /* 1640009ea47eSEdward Tomasz Napierala * Digests are always disabled during login phase. 1641009ea47eSEdward Tomasz Napierala */ 1642009ea47eSEdward Tomasz Napierala is->is_conn->ic_header_crc32c = false; 1643009ea47eSEdward Tomasz Napierala is->is_conn->ic_data_crc32c = false; 1644009ea47eSEdward Tomasz Napierala 1645009ea47eSEdward Tomasz Napierala return (error); 1646009ea47eSEdward Tomasz Napierala } 1647009ea47eSEdward Tomasz Napierala 1648009ea47eSEdward Tomasz Napierala static int 1649009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_send(struct iscsi_softc *sc, 1650009ea47eSEdward Tomasz Napierala struct iscsi_daemon_send *ids) 1651009ea47eSEdward Tomasz Napierala { 1652009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1653009ea47eSEdward Tomasz Napierala struct icl_pdu *ip; 1654009ea47eSEdward Tomasz Napierala size_t datalen; 1655009ea47eSEdward Tomasz Napierala void *data; 1656009ea47eSEdward Tomasz Napierala int error; 1657009ea47eSEdward Tomasz Napierala 1658009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1659009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1660009ea47eSEdward Tomasz Napierala if (is->is_id == ids->ids_session_id) 1661009ea47eSEdward Tomasz Napierala break; 1662009ea47eSEdward Tomasz Napierala } 1663009ea47eSEdward Tomasz Napierala if (is == NULL) { 1664009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1665009ea47eSEdward Tomasz Napierala return (ESRCH); 1666009ea47eSEdward Tomasz Napierala } 1667009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1668009ea47eSEdward Tomasz Napierala 1669009ea47eSEdward Tomasz Napierala if (is->is_login_phase == false) 1670009ea47eSEdward Tomasz Napierala return (EBUSY); 1671009ea47eSEdward Tomasz Napierala 1672009ea47eSEdward Tomasz Napierala if (is->is_terminating || is->is_reconnecting) 1673009ea47eSEdward Tomasz Napierala return (EIO); 1674009ea47eSEdward Tomasz Napierala 1675009ea47eSEdward Tomasz Napierala datalen = ids->ids_data_segment_len; 16760cc7d64aSJohn Baldwin if (datalen > is->is_conn->ic_max_send_data_segment_length) 1677009ea47eSEdward Tomasz Napierala return (EINVAL); 1678009ea47eSEdward Tomasz Napierala if (datalen > 0) { 1679009ea47eSEdward Tomasz Napierala data = malloc(datalen, M_ISCSI, M_WAITOK); 1680009ea47eSEdward Tomasz Napierala error = copyin(ids->ids_data_segment, data, datalen); 1681009ea47eSEdward Tomasz Napierala if (error != 0) { 1682009ea47eSEdward Tomasz Napierala free(data, M_ISCSI); 1683009ea47eSEdward Tomasz Napierala return (error); 1684009ea47eSEdward Tomasz Napierala } 1685009ea47eSEdward Tomasz Napierala } 1686009ea47eSEdward Tomasz Napierala 1687d2d52b00SEdward Tomasz Napierala ip = icl_pdu_new(is->is_conn, M_WAITOK); 1688009ea47eSEdward Tomasz Napierala memcpy(ip->ip_bhs, ids->ids_bhs, sizeof(*ip->ip_bhs)); 1689009ea47eSEdward Tomasz Napierala if (datalen > 0) { 1690009ea47eSEdward Tomasz Napierala error = icl_pdu_append_data(ip, data, datalen, M_WAITOK); 1691009ea47eSEdward Tomasz Napierala KASSERT(error == 0, ("icl_pdu_append_data(..., M_WAITOK) failed")); 1692009ea47eSEdward Tomasz Napierala free(data, M_ISCSI); 1693009ea47eSEdward Tomasz Napierala } 1694d66a906bSEdward Tomasz Napierala iscsi_pdu_queue(ip); 1695009ea47eSEdward Tomasz Napierala 1696009ea47eSEdward Tomasz Napierala return (0); 1697009ea47eSEdward Tomasz Napierala } 1698009ea47eSEdward Tomasz Napierala 1699009ea47eSEdward Tomasz Napierala static int 1700009ea47eSEdward Tomasz Napierala iscsi_ioctl_daemon_receive(struct iscsi_softc *sc, 1701009ea47eSEdward Tomasz Napierala struct iscsi_daemon_receive *idr) 1702009ea47eSEdward Tomasz Napierala { 1703009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1704009ea47eSEdward Tomasz Napierala struct icl_pdu *ip; 1705009ea47eSEdward Tomasz Napierala void *data; 17062f0586b2SEdward Tomasz Napierala int error; 1707009ea47eSEdward Tomasz Napierala 1708009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1709009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1710009ea47eSEdward Tomasz Napierala if (is->is_id == idr->idr_session_id) 1711009ea47eSEdward Tomasz Napierala break; 1712009ea47eSEdward Tomasz Napierala } 1713009ea47eSEdward Tomasz Napierala if (is == NULL) { 1714009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1715009ea47eSEdward Tomasz Napierala return (ESRCH); 1716009ea47eSEdward Tomasz Napierala } 1717009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1718009ea47eSEdward Tomasz Napierala 1719009ea47eSEdward Tomasz Napierala if (is->is_login_phase == false) 1720009ea47eSEdward Tomasz Napierala return (EBUSY); 1721009ea47eSEdward Tomasz Napierala 1722009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1723009ea47eSEdward Tomasz Napierala while (is->is_login_pdu == NULL && 1724009ea47eSEdward Tomasz Napierala is->is_terminating == false && 17252f0586b2SEdward Tomasz Napierala is->is_reconnecting == false) { 17262f0586b2SEdward Tomasz Napierala error = cv_wait_sig(&is->is_login_cv, &is->is_lock); 17272f0586b2SEdward Tomasz Napierala if (error != 0) { 17282f0586b2SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 17292f0586b2SEdward Tomasz Napierala return (error); 17302f0586b2SEdward Tomasz Napierala } 17312f0586b2SEdward Tomasz Napierala } 1732009ea47eSEdward Tomasz Napierala if (is->is_terminating || is->is_reconnecting) { 1733009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1734009ea47eSEdward Tomasz Napierala return (EIO); 1735009ea47eSEdward Tomasz Napierala } 1736009ea47eSEdward Tomasz Napierala ip = is->is_login_pdu; 1737009ea47eSEdward Tomasz Napierala is->is_login_pdu = NULL; 1738009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1739009ea47eSEdward Tomasz Napierala 1740009ea47eSEdward Tomasz Napierala if (ip->ip_data_len > idr->idr_data_segment_len) { 1741009ea47eSEdward Tomasz Napierala icl_pdu_free(ip); 1742009ea47eSEdward Tomasz Napierala return (EMSGSIZE); 1743009ea47eSEdward Tomasz Napierala } 1744009ea47eSEdward Tomasz Napierala 1745009ea47eSEdward Tomasz Napierala copyout(ip->ip_bhs, idr->idr_bhs, sizeof(*ip->ip_bhs)); 1746009ea47eSEdward Tomasz Napierala if (ip->ip_data_len > 0) { 1747009ea47eSEdward Tomasz Napierala data = malloc(ip->ip_data_len, M_ISCSI, M_WAITOK); 1748009ea47eSEdward Tomasz Napierala icl_pdu_get_data(ip, 0, data, ip->ip_data_len); 1749009ea47eSEdward Tomasz Napierala copyout(data, idr->idr_data_segment, ip->ip_data_len); 1750009ea47eSEdward Tomasz Napierala free(data, M_ISCSI); 1751009ea47eSEdward Tomasz Napierala } 1752009ea47eSEdward Tomasz Napierala 1753009ea47eSEdward Tomasz Napierala icl_pdu_free(ip); 1754009ea47eSEdward Tomasz Napierala 1755009ea47eSEdward Tomasz Napierala return (0); 1756009ea47eSEdward Tomasz Napierala } 1757009ea47eSEdward Tomasz Napierala #endif /* ICL_KERNEL_PROXY */ 1758009ea47eSEdward Tomasz Napierala 1759009ea47eSEdward Tomasz Napierala static void 1760009ea47eSEdward Tomasz Napierala iscsi_sanitize_session_conf(struct iscsi_session_conf *isc) 1761009ea47eSEdward Tomasz Napierala { 1762009ea47eSEdward Tomasz Napierala /* 1763009ea47eSEdward Tomasz Napierala * Just make sure all the fields are null-terminated. 1764009ea47eSEdward Tomasz Napierala * 1765009ea47eSEdward Tomasz Napierala * XXX: This is not particularly secure. We should 1766009ea47eSEdward Tomasz Napierala * create our own conf and then copy in relevant 1767009ea47eSEdward Tomasz Napierala * fields. 1768009ea47eSEdward Tomasz Napierala */ 1769009ea47eSEdward Tomasz Napierala isc->isc_initiator[ISCSI_NAME_LEN - 1] = '\0'; 1770009ea47eSEdward Tomasz Napierala isc->isc_initiator_addr[ISCSI_ADDR_LEN - 1] = '\0'; 1771009ea47eSEdward Tomasz Napierala isc->isc_initiator_alias[ISCSI_ALIAS_LEN - 1] = '\0'; 1772009ea47eSEdward Tomasz Napierala isc->isc_target[ISCSI_NAME_LEN - 1] = '\0'; 1773009ea47eSEdward Tomasz Napierala isc->isc_target_addr[ISCSI_ADDR_LEN - 1] = '\0'; 1774009ea47eSEdward Tomasz Napierala isc->isc_user[ISCSI_NAME_LEN - 1] = '\0'; 1775009ea47eSEdward Tomasz Napierala isc->isc_secret[ISCSI_SECRET_LEN - 1] = '\0'; 1776009ea47eSEdward Tomasz Napierala isc->isc_mutual_user[ISCSI_NAME_LEN - 1] = '\0'; 1777009ea47eSEdward Tomasz Napierala isc->isc_mutual_secret[ISCSI_SECRET_LEN - 1] = '\0'; 1778009ea47eSEdward Tomasz Napierala } 1779009ea47eSEdward Tomasz Napierala 178051be90b5SEdward Tomasz Napierala static bool 178151be90b5SEdward Tomasz Napierala iscsi_valid_session_conf(const struct iscsi_session_conf *isc) 178251be90b5SEdward Tomasz Napierala { 178351be90b5SEdward Tomasz Napierala 178451be90b5SEdward Tomasz Napierala if (isc->isc_initiator[0] == '\0') { 178551be90b5SEdward Tomasz Napierala ISCSI_DEBUG("empty isc_initiator"); 178651be90b5SEdward Tomasz Napierala return (false); 178751be90b5SEdward Tomasz Napierala } 178851be90b5SEdward Tomasz Napierala 178951be90b5SEdward Tomasz Napierala if (isc->isc_target_addr[0] == '\0') { 179051be90b5SEdward Tomasz Napierala ISCSI_DEBUG("empty isc_target_addr"); 179151be90b5SEdward Tomasz Napierala return (false); 179251be90b5SEdward Tomasz Napierala } 179351be90b5SEdward Tomasz Napierala 179451be90b5SEdward Tomasz Napierala if (isc->isc_discovery != 0 && isc->isc_target[0] != 0) { 179551be90b5SEdward Tomasz Napierala ISCSI_DEBUG("non-empty isc_target for discovery session"); 179651be90b5SEdward Tomasz Napierala return (false); 179751be90b5SEdward Tomasz Napierala } 179851be90b5SEdward Tomasz Napierala 179951be90b5SEdward Tomasz Napierala if (isc->isc_discovery == 0 && isc->isc_target[0] == 0) { 180051be90b5SEdward Tomasz Napierala ISCSI_DEBUG("empty isc_target for non-discovery session"); 180151be90b5SEdward Tomasz Napierala return (false); 180251be90b5SEdward Tomasz Napierala } 180351be90b5SEdward Tomasz Napierala 180451be90b5SEdward Tomasz Napierala return (true); 180551be90b5SEdward Tomasz Napierala } 180651be90b5SEdward Tomasz Napierala 1807009ea47eSEdward Tomasz Napierala static int 1808009ea47eSEdward Tomasz Napierala iscsi_ioctl_session_add(struct iscsi_softc *sc, struct iscsi_session_add *isa) 1809009ea47eSEdward Tomasz Napierala { 1810009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1811009ea47eSEdward Tomasz Napierala const struct iscsi_session *is2; 1812009ea47eSEdward Tomasz Napierala int error; 1813009ea47eSEdward Tomasz Napierala 1814009ea47eSEdward Tomasz Napierala iscsi_sanitize_session_conf(&isa->isa_conf); 181551be90b5SEdward Tomasz Napierala if (iscsi_valid_session_conf(&isa->isa_conf) == false) 181651be90b5SEdward Tomasz Napierala return (EINVAL); 1817009ea47eSEdward Tomasz Napierala 1818009ea47eSEdward Tomasz Napierala is = malloc(sizeof(*is), M_ISCSI, M_ZERO | M_WAITOK); 1819009ea47eSEdward Tomasz Napierala memcpy(&is->is_conf, &isa->isa_conf, sizeof(is->is_conf)); 1820009ea47eSEdward Tomasz Napierala 1821009ea47eSEdward Tomasz Napierala sx_xlock(&sc->sc_lock); 1822009ea47eSEdward Tomasz Napierala 1823009ea47eSEdward Tomasz Napierala /* 1824009ea47eSEdward Tomasz Napierala * Prevent duplicates. 1825009ea47eSEdward Tomasz Napierala */ 1826009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is2, &sc->sc_sessions, is_next) { 18277843bd03SEdward Tomasz Napierala if (!!is->is_conf.isc_discovery != 18287843bd03SEdward Tomasz Napierala !!is2->is_conf.isc_discovery) 18297843bd03SEdward Tomasz Napierala continue; 18307843bd03SEdward Tomasz Napierala 18317843bd03SEdward Tomasz Napierala if (strcmp(is->is_conf.isc_target_addr, 18327843bd03SEdward Tomasz Napierala is2->is_conf.isc_target_addr) != 0) 18337843bd03SEdward Tomasz Napierala continue; 18347843bd03SEdward Tomasz Napierala 18357843bd03SEdward Tomasz Napierala if (is->is_conf.isc_discovery == 0 && 18367843bd03SEdward Tomasz Napierala strcmp(is->is_conf.isc_target, 18377843bd03SEdward Tomasz Napierala is2->is_conf.isc_target) != 0) 18387843bd03SEdward Tomasz Napierala continue; 18397843bd03SEdward Tomasz Napierala 1840009ea47eSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 18417843bd03SEdward Tomasz Napierala free(is, M_ISCSI); 1842009ea47eSEdward Tomasz Napierala return (EBUSY); 1843009ea47eSEdward Tomasz Napierala } 1844009ea47eSEdward Tomasz Napierala 184582babffbSEdward Tomasz Napierala is->is_conn = icl_new_conn(is->is_conf.isc_offload, 1846b8911594SEdward Tomasz Napierala is->is_conf.isc_iser, "iscsi", &is->is_lock); 184782babffbSEdward Tomasz Napierala if (is->is_conn == NULL) { 184882babffbSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 184982babffbSEdward Tomasz Napierala free(is, M_ISCSI); 185082babffbSEdward Tomasz Napierala return (EINVAL); 185182babffbSEdward Tomasz Napierala } 1852009ea47eSEdward Tomasz Napierala is->is_conn->ic_receive = iscsi_receive_callback; 1853009ea47eSEdward Tomasz Napierala is->is_conn->ic_error = iscsi_error_callback; 1854009ea47eSEdward Tomasz Napierala is->is_conn->ic_prv0 = is; 1855009ea47eSEdward Tomasz Napierala TAILQ_INIT(&is->is_outstanding); 185616c158a5SEdward Tomasz Napierala STAILQ_INIT(&is->is_postponed); 1857009ea47eSEdward Tomasz Napierala mtx_init(&is->is_lock, "iscsi_lock", NULL, MTX_DEF); 1858009ea47eSEdward Tomasz Napierala cv_init(&is->is_maintenance_cv, "iscsi_mt"); 1859009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 1860009ea47eSEdward Tomasz Napierala cv_init(&is->is_login_cv, "iscsi_login"); 1861009ea47eSEdward Tomasz Napierala #endif 1862009ea47eSEdward Tomasz Napierala 18630cc7d64aSJohn Baldwin /* 18640cc7d64aSJohn Baldwin * Set some default values, from RFC 3720, section 12. 18650cc7d64aSJohn Baldwin * 18660cc7d64aSJohn Baldwin * These values are updated by the handoff IOCTL, but are 18670cc7d64aSJohn Baldwin * needed prior to the handoff to support sending the ISER 18680cc7d64aSJohn Baldwin * login PDU. 18690cc7d64aSJohn Baldwin */ 18700cc7d64aSJohn Baldwin is->is_conn->ic_max_recv_data_segment_length = 8192; 18710cc7d64aSJohn Baldwin is->is_conn->ic_max_send_data_segment_length = 8192; 18720cc7d64aSJohn Baldwin is->is_max_burst_length = 262144; 18730cc7d64aSJohn Baldwin is->is_first_burst_length = 65536; 18740cc7d64aSJohn Baldwin 1875009ea47eSEdward Tomasz Napierala is->is_softc = sc; 1876009ea47eSEdward Tomasz Napierala sc->sc_last_session_id++; 1877009ea47eSEdward Tomasz Napierala is->is_id = sc->sc_last_session_id; 1878ffe82e05SAlexander Motin is->is_isid[0] = 0x80; /* RFC 3720, 10.12.5: 10b, "Random" ISID. */ 1879ffe82e05SAlexander Motin arc4rand(&is->is_isid[1], 5, 0); 1880ffe82e05SAlexander Motin is->is_tsih = 0; 1881009ea47eSEdward Tomasz Napierala callout_init(&is->is_callout, 1); 1882009ea47eSEdward Tomasz Napierala 1883009ea47eSEdward Tomasz Napierala error = kthread_add(iscsi_maintenance_thread, is, NULL, NULL, 0, 0, "iscsimt"); 1884009ea47eSEdward Tomasz Napierala if (error != 0) { 1885009ea47eSEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "kthread_add(9) failed with error %d", error); 188609f2b94bSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 1887009ea47eSEdward Tomasz Napierala return (error); 1888009ea47eSEdward Tomasz Napierala } 1889009ea47eSEdward Tomasz Napierala 189009f2b94bSEdward Tomasz Napierala callout_reset(&is->is_callout, 1 * hz, iscsi_callout, is); 189109f2b94bSEdward Tomasz Napierala TAILQ_INSERT_TAIL(&sc->sc_sessions, is, is_next); 189209f2b94bSEdward Tomasz Napierala 18932be596adSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1894ba165a31SEdward Tomasz Napierala /* 1895ba165a31SEdward Tomasz Napierala * Don't notify iscsid(8) if the session is disabled and it's not 1896ba165a31SEdward Tomasz Napierala * a discovery session, 1897ba165a31SEdward Tomasz Napierala */ 1898ba165a31SEdward Tomasz Napierala if (is->is_conf.isc_enable == 0 && is->is_conf.isc_discovery == 0) { 1899ba165a31SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1900ba165a31SEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 1901ba165a31SEdward Tomasz Napierala return (0); 1902ba165a31SEdward Tomasz Napierala } 1903ba165a31SEdward Tomasz Napierala 1904009ea47eSEdward Tomasz Napierala is->is_waiting_for_iscsid = true; 1905009ea47eSEdward Tomasz Napierala strlcpy(is->is_reason, "Waiting for iscsid(8)", sizeof(is->is_reason)); 19062be596adSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1907009ea47eSEdward Tomasz Napierala cv_signal(&sc->sc_cv); 1908009ea47eSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 1909009ea47eSEdward Tomasz Napierala return (0); 1910009ea47eSEdward Tomasz Napierala } 1911009ea47eSEdward Tomasz Napierala 1912009ea47eSEdward Tomasz Napierala static bool 1913009ea47eSEdward Tomasz Napierala iscsi_session_conf_matches(unsigned int id1, const struct iscsi_session_conf *c1, 1914009ea47eSEdward Tomasz Napierala unsigned int id2, const struct iscsi_session_conf *c2) 1915009ea47eSEdward Tomasz Napierala { 19166cc1e267SEdward Tomasz Napierala 19176cc1e267SEdward Tomasz Napierala if (id2 != 0 && id2 != id1) 1918009ea47eSEdward Tomasz Napierala return (false); 19196cc1e267SEdward Tomasz Napierala if (c2->isc_target[0] != '\0' && 19206cc1e267SEdward Tomasz Napierala strcmp(c1->isc_target, c2->isc_target) != 0) 19216cc1e267SEdward Tomasz Napierala return (false); 19226cc1e267SEdward Tomasz Napierala if (c2->isc_target_addr[0] != '\0' && 19236cc1e267SEdward Tomasz Napierala strcmp(c1->isc_target_addr, c2->isc_target_addr) != 0) 19246cc1e267SEdward Tomasz Napierala return (false); 19256cc1e267SEdward Tomasz Napierala return (true); 1926009ea47eSEdward Tomasz Napierala } 1927009ea47eSEdward Tomasz Napierala 1928009ea47eSEdward Tomasz Napierala static int 1929009ea47eSEdward Tomasz Napierala iscsi_ioctl_session_remove(struct iscsi_softc *sc, 1930009ea47eSEdward Tomasz Napierala struct iscsi_session_remove *isr) 1931009ea47eSEdward Tomasz Napierala { 1932009ea47eSEdward Tomasz Napierala struct iscsi_session *is, *tmp; 1933009ea47eSEdward Tomasz Napierala bool found = false; 1934009ea47eSEdward Tomasz Napierala 1935009ea47eSEdward Tomasz Napierala iscsi_sanitize_session_conf(&isr->isr_conf); 1936009ea47eSEdward Tomasz Napierala 1937009ea47eSEdward Tomasz Napierala sx_xlock(&sc->sc_lock); 1938009ea47eSEdward Tomasz Napierala TAILQ_FOREACH_SAFE(is, &sc->sc_sessions, is_next, tmp) { 1939009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 1940009ea47eSEdward Tomasz Napierala if (iscsi_session_conf_matches(is->is_id, &is->is_conf, 1941009ea47eSEdward Tomasz Napierala isr->isr_session_id, &isr->isr_conf)) { 1942009ea47eSEdward Tomasz Napierala found = true; 1943009ea47eSEdward Tomasz Napierala iscsi_session_logout(is); 1944009ea47eSEdward Tomasz Napierala iscsi_session_terminate(is); 1945009ea47eSEdward Tomasz Napierala } 1946009ea47eSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 1947009ea47eSEdward Tomasz Napierala } 1948009ea47eSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 1949009ea47eSEdward Tomasz Napierala 1950009ea47eSEdward Tomasz Napierala if (!found) 1951009ea47eSEdward Tomasz Napierala return (ESRCH); 1952009ea47eSEdward Tomasz Napierala 1953009ea47eSEdward Tomasz Napierala return (0); 1954009ea47eSEdward Tomasz Napierala } 1955009ea47eSEdward Tomasz Napierala 1956009ea47eSEdward Tomasz Napierala static int 1957009ea47eSEdward Tomasz Napierala iscsi_ioctl_session_list(struct iscsi_softc *sc, struct iscsi_session_list *isl) 1958009ea47eSEdward Tomasz Napierala { 1959009ea47eSEdward Tomasz Napierala int error; 1960009ea47eSEdward Tomasz Napierala unsigned int i = 0; 1961009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 1962009ea47eSEdward Tomasz Napierala struct iscsi_session_state iss; 1963009ea47eSEdward Tomasz Napierala 1964009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 1965009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 1966009ea47eSEdward Tomasz Napierala if (i >= isl->isl_nentries) { 1967009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1968009ea47eSEdward Tomasz Napierala return (EMSGSIZE); 1969009ea47eSEdward Tomasz Napierala } 1970009ea47eSEdward Tomasz Napierala memset(&iss, 0, sizeof(iss)); 1971009ea47eSEdward Tomasz Napierala memcpy(&iss.iss_conf, &is->is_conf, sizeof(iss.iss_conf)); 1972009ea47eSEdward Tomasz Napierala iss.iss_id = is->is_id; 1973009ea47eSEdward Tomasz Napierala strlcpy(iss.iss_target_alias, is->is_target_alias, sizeof(iss.iss_target_alias)); 1974009ea47eSEdward Tomasz Napierala strlcpy(iss.iss_reason, is->is_reason, sizeof(iss.iss_reason)); 197582babffbSEdward Tomasz Napierala strlcpy(iss.iss_offload, is->is_conn->ic_offload, sizeof(iss.iss_offload)); 1976009ea47eSEdward Tomasz Napierala 1977009ea47eSEdward Tomasz Napierala if (is->is_conn->ic_header_crc32c) 1978009ea47eSEdward Tomasz Napierala iss.iss_header_digest = ISCSI_DIGEST_CRC32C; 1979009ea47eSEdward Tomasz Napierala else 1980009ea47eSEdward Tomasz Napierala iss.iss_header_digest = ISCSI_DIGEST_NONE; 1981009ea47eSEdward Tomasz Napierala 1982009ea47eSEdward Tomasz Napierala if (is->is_conn->ic_data_crc32c) 1983009ea47eSEdward Tomasz Napierala iss.iss_data_digest = ISCSI_DIGEST_CRC32C; 1984009ea47eSEdward Tomasz Napierala else 1985009ea47eSEdward Tomasz Napierala iss.iss_data_digest = ISCSI_DIGEST_NONE; 1986009ea47eSEdward Tomasz Napierala 198797b84d34SNavdeep Parhar iss.iss_max_send_data_segment_length = 19880cc7d64aSJohn Baldwin is->is_conn->ic_max_send_data_segment_length; 198997b84d34SNavdeep Parhar iss.iss_max_recv_data_segment_length = 19900cc7d64aSJohn Baldwin is->is_conn->ic_max_recv_data_segment_length; 19914e5408f1SEdward Tomasz Napierala iss.iss_max_burst_length = is->is_max_burst_length; 19924e5408f1SEdward Tomasz Napierala iss.iss_first_burst_length = is->is_first_burst_length; 1993009ea47eSEdward Tomasz Napierala iss.iss_immediate_data = is->is_immediate_data; 1994009ea47eSEdward Tomasz Napierala iss.iss_connected = is->is_connected; 1995009ea47eSEdward Tomasz Napierala 1996009ea47eSEdward Tomasz Napierala error = copyout(&iss, isl->isl_pstates + i, sizeof(iss)); 1997009ea47eSEdward Tomasz Napierala if (error != 0) { 1998009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 1999009ea47eSEdward Tomasz Napierala return (error); 2000009ea47eSEdward Tomasz Napierala } 2001009ea47eSEdward Tomasz Napierala i++; 2002009ea47eSEdward Tomasz Napierala } 2003009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 2004009ea47eSEdward Tomasz Napierala 2005009ea47eSEdward Tomasz Napierala isl->isl_nentries = i; 2006009ea47eSEdward Tomasz Napierala 2007009ea47eSEdward Tomasz Napierala return (0); 2008009ea47eSEdward Tomasz Napierala } 2009009ea47eSEdward Tomasz Napierala 2010009ea47eSEdward Tomasz Napierala static int 201151be90b5SEdward Tomasz Napierala iscsi_ioctl_session_modify(struct iscsi_softc *sc, 201251be90b5SEdward Tomasz Napierala struct iscsi_session_modify *ism) 201351be90b5SEdward Tomasz Napierala { 201451be90b5SEdward Tomasz Napierala struct iscsi_session *is; 20158ff2372aSEdward Tomasz Napierala const struct iscsi_session *is2; 201651be90b5SEdward Tomasz Napierala 201751be90b5SEdward Tomasz Napierala iscsi_sanitize_session_conf(&ism->ism_conf); 201851be90b5SEdward Tomasz Napierala if (iscsi_valid_session_conf(&ism->ism_conf) == false) 201951be90b5SEdward Tomasz Napierala return (EINVAL); 202051be90b5SEdward Tomasz Napierala 202151be90b5SEdward Tomasz Napierala sx_xlock(&sc->sc_lock); 202251be90b5SEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 202351be90b5SEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 20248ff2372aSEdward Tomasz Napierala if (is->is_id == ism->ism_session_id) { 20258ff2372aSEdward Tomasz Napierala /* Note that the session remains locked. */ 202651be90b5SEdward Tomasz Napierala break; 20278ff2372aSEdward Tomasz Napierala } 202851be90b5SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 202951be90b5SEdward Tomasz Napierala } 203051be90b5SEdward Tomasz Napierala if (is == NULL) { 203151be90b5SEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 203251be90b5SEdward Tomasz Napierala return (ESRCH); 203351be90b5SEdward Tomasz Napierala } 20348ff2372aSEdward Tomasz Napierala 20358ff2372aSEdward Tomasz Napierala /* 20368ff2372aSEdward Tomasz Napierala * Prevent duplicates. 20378ff2372aSEdward Tomasz Napierala */ 20388ff2372aSEdward Tomasz Napierala TAILQ_FOREACH(is2, &sc->sc_sessions, is_next) { 20398ff2372aSEdward Tomasz Napierala if (is == is2) 20408ff2372aSEdward Tomasz Napierala continue; 20418ff2372aSEdward Tomasz Napierala 20428ff2372aSEdward Tomasz Napierala if (!!ism->ism_conf.isc_discovery != 20438ff2372aSEdward Tomasz Napierala !!is2->is_conf.isc_discovery) 20448ff2372aSEdward Tomasz Napierala continue; 20458ff2372aSEdward Tomasz Napierala 20468ff2372aSEdward Tomasz Napierala if (strcmp(ism->ism_conf.isc_target_addr, 20478ff2372aSEdward Tomasz Napierala is2->is_conf.isc_target_addr) != 0) 20488ff2372aSEdward Tomasz Napierala continue; 20498ff2372aSEdward Tomasz Napierala 20508ff2372aSEdward Tomasz Napierala if (ism->ism_conf.isc_discovery == 0 && 20518ff2372aSEdward Tomasz Napierala strcmp(ism->ism_conf.isc_target, 20528ff2372aSEdward Tomasz Napierala is2->is_conf.isc_target) != 0) 20538ff2372aSEdward Tomasz Napierala continue; 20548ff2372aSEdward Tomasz Napierala 20558ff2372aSEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 20568ff2372aSEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 20578ff2372aSEdward Tomasz Napierala return (EBUSY); 20588ff2372aSEdward Tomasz Napierala } 20598ff2372aSEdward Tomasz Napierala 206051be90b5SEdward Tomasz Napierala sx_xunlock(&sc->sc_lock); 206151be90b5SEdward Tomasz Napierala 206251be90b5SEdward Tomasz Napierala memcpy(&is->is_conf, &ism->ism_conf, sizeof(is->is_conf)); 206351be90b5SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 206451be90b5SEdward Tomasz Napierala 206551be90b5SEdward Tomasz Napierala iscsi_session_reconnect(is); 206651be90b5SEdward Tomasz Napierala 206751be90b5SEdward Tomasz Napierala return (0); 206851be90b5SEdward Tomasz Napierala } 206951be90b5SEdward Tomasz Napierala 207051be90b5SEdward Tomasz Napierala static int 2071009ea47eSEdward Tomasz Napierala iscsi_ioctl(struct cdev *dev, u_long cmd, caddr_t arg, int mode, 2072009ea47eSEdward Tomasz Napierala struct thread *td) 2073009ea47eSEdward Tomasz Napierala { 2074009ea47eSEdward Tomasz Napierala struct iscsi_softc *sc; 2075009ea47eSEdward Tomasz Napierala 2076009ea47eSEdward Tomasz Napierala sc = dev->si_drv1; 2077009ea47eSEdward Tomasz Napierala 2078009ea47eSEdward Tomasz Napierala switch (cmd) { 2079009ea47eSEdward Tomasz Napierala case ISCSIDWAIT: 2080009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_wait(sc, 2081009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_request *)arg)); 2082009ea47eSEdward Tomasz Napierala case ISCSIDHANDOFF: 2083009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_handoff(sc, 2084009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_handoff *)arg)); 2085009ea47eSEdward Tomasz Napierala case ISCSIDFAIL: 2086009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_fail(sc, 2087009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_fail *)arg)); 2088009ea47eSEdward Tomasz Napierala #ifdef ICL_KERNEL_PROXY 2089009ea47eSEdward Tomasz Napierala case ISCSIDCONNECT: 2090009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_connect(sc, 2091009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_connect *)arg)); 2092009ea47eSEdward Tomasz Napierala case ISCSIDSEND: 2093009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_send(sc, 2094009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_send *)arg)); 2095009ea47eSEdward Tomasz Napierala case ISCSIDRECEIVE: 2096009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_daemon_receive(sc, 2097009ea47eSEdward Tomasz Napierala (struct iscsi_daemon_receive *)arg)); 2098009ea47eSEdward Tomasz Napierala #endif /* ICL_KERNEL_PROXY */ 2099009ea47eSEdward Tomasz Napierala case ISCSISADD: 2100009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_session_add(sc, 2101009ea47eSEdward Tomasz Napierala (struct iscsi_session_add *)arg)); 2102009ea47eSEdward Tomasz Napierala case ISCSISREMOVE: 2103009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_session_remove(sc, 2104009ea47eSEdward Tomasz Napierala (struct iscsi_session_remove *)arg)); 2105009ea47eSEdward Tomasz Napierala case ISCSISLIST: 2106009ea47eSEdward Tomasz Napierala return (iscsi_ioctl_session_list(sc, 2107009ea47eSEdward Tomasz Napierala (struct iscsi_session_list *)arg)); 210851be90b5SEdward Tomasz Napierala case ISCSISMODIFY: 210951be90b5SEdward Tomasz Napierala return (iscsi_ioctl_session_modify(sc, 211051be90b5SEdward Tomasz Napierala (struct iscsi_session_modify *)arg)); 2111009ea47eSEdward Tomasz Napierala default: 2112009ea47eSEdward Tomasz Napierala return (EINVAL); 2113009ea47eSEdward Tomasz Napierala } 2114009ea47eSEdward Tomasz Napierala } 2115009ea47eSEdward Tomasz Napierala 2116009ea47eSEdward Tomasz Napierala static struct iscsi_outstanding * 2117009ea47eSEdward Tomasz Napierala iscsi_outstanding_find(struct iscsi_session *is, uint32_t initiator_task_tag) 2118009ea47eSEdward Tomasz Napierala { 2119009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io; 2120009ea47eSEdward Tomasz Napierala 2121009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 2122009ea47eSEdward Tomasz Napierala 2123009ea47eSEdward Tomasz Napierala TAILQ_FOREACH(io, &is->is_outstanding, io_next) { 2124009ea47eSEdward Tomasz Napierala if (io->io_initiator_task_tag == initiator_task_tag) 2125009ea47eSEdward Tomasz Napierala return (io); 2126009ea47eSEdward Tomasz Napierala } 2127009ea47eSEdward Tomasz Napierala return (NULL); 2128009ea47eSEdward Tomasz Napierala } 2129009ea47eSEdward Tomasz Napierala 2130aa75114cSAlexander Motin static struct iscsi_outstanding * 2131aa75114cSAlexander Motin iscsi_outstanding_find_ccb(struct iscsi_session *is, union ccb *ccb) 2132aa75114cSAlexander Motin { 2133aa75114cSAlexander Motin struct iscsi_outstanding *io; 2134aa75114cSAlexander Motin 2135aa75114cSAlexander Motin ISCSI_SESSION_LOCK_ASSERT(is); 2136aa75114cSAlexander Motin 2137aa75114cSAlexander Motin TAILQ_FOREACH(io, &is->is_outstanding, io_next) { 2138aa75114cSAlexander Motin if (io->io_ccb == ccb) 2139aa75114cSAlexander Motin return (io); 2140aa75114cSAlexander Motin } 2141aa75114cSAlexander Motin return (NULL); 2142aa75114cSAlexander Motin } 2143aa75114cSAlexander Motin 2144aa75114cSAlexander Motin static struct iscsi_outstanding * 2145604c023fSEdward Tomasz Napierala iscsi_outstanding_add(struct iscsi_session *is, struct icl_pdu *request, 21467a03d007SEdward Tomasz Napierala union ccb *ccb, uint32_t *initiator_task_tagp) 2147009ea47eSEdward Tomasz Napierala { 2148009ea47eSEdward Tomasz Napierala struct iscsi_outstanding *io; 21497a03d007SEdward Tomasz Napierala int error; 2150009ea47eSEdward Tomasz Napierala 2151009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 2152009ea47eSEdward Tomasz Napierala 2153009ea47eSEdward Tomasz Napierala io = uma_zalloc(iscsi_outstanding_zone, M_NOWAIT | M_ZERO); 2154009ea47eSEdward Tomasz Napierala if (io == NULL) { 21557a03d007SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, "failed to allocate %zd bytes", 21567a03d007SEdward Tomasz Napierala sizeof(*io)); 2157aa75114cSAlexander Motin return (NULL); 2158009ea47eSEdward Tomasz Napierala } 21597a03d007SEdward Tomasz Napierala 2160604c023fSEdward Tomasz Napierala error = icl_conn_task_setup(is->is_conn, request, &ccb->csio, 21617a03d007SEdward Tomasz Napierala initiator_task_tagp, &io->io_icl_prv); 21627a03d007SEdward Tomasz Napierala if (error != 0) { 21637a03d007SEdward Tomasz Napierala ISCSI_SESSION_WARN(is, 21647a03d007SEdward Tomasz Napierala "icl_conn_task_setup() failed with error %d", error); 21657a03d007SEdward Tomasz Napierala uma_zfree(iscsi_outstanding_zone, io); 21667a03d007SEdward Tomasz Napierala return (NULL); 21677a03d007SEdward Tomasz Napierala } 21687a03d007SEdward Tomasz Napierala 21697a03d007SEdward Tomasz Napierala KASSERT(iscsi_outstanding_find(is, *initiator_task_tagp) == NULL, 21707a03d007SEdward Tomasz Napierala ("initiator_task_tag 0x%x already added", *initiator_task_tagp)); 21717a03d007SEdward Tomasz Napierala 21727a03d007SEdward Tomasz Napierala io->io_initiator_task_tag = *initiator_task_tagp; 2173009ea47eSEdward Tomasz Napierala io->io_ccb = ccb; 2174009ea47eSEdward Tomasz Napierala TAILQ_INSERT_TAIL(&is->is_outstanding, io, io_next); 2175aa75114cSAlexander Motin return (io); 2176009ea47eSEdward Tomasz Napierala } 2177009ea47eSEdward Tomasz Napierala 2178009ea47eSEdward Tomasz Napierala static void 2179009ea47eSEdward Tomasz Napierala iscsi_outstanding_remove(struct iscsi_session *is, struct iscsi_outstanding *io) 2180009ea47eSEdward Tomasz Napierala { 2181009ea47eSEdward Tomasz Napierala 2182009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 2183009ea47eSEdward Tomasz Napierala 21847a03d007SEdward Tomasz Napierala icl_conn_task_done(is->is_conn, io->io_icl_prv); 2185009ea47eSEdward Tomasz Napierala TAILQ_REMOVE(&is->is_outstanding, io, io_next); 2186009ea47eSEdward Tomasz Napierala uma_zfree(iscsi_outstanding_zone, io); 2187009ea47eSEdward Tomasz Napierala } 2188009ea47eSEdward Tomasz Napierala 2189009ea47eSEdward Tomasz Napierala static void 2190aa75114cSAlexander Motin iscsi_action_abort(struct iscsi_session *is, union ccb *ccb) 2191aa75114cSAlexander Motin { 2192aa75114cSAlexander Motin struct icl_pdu *request; 2193aa75114cSAlexander Motin struct iscsi_bhs_task_management_request *bhstmr; 2194aa75114cSAlexander Motin struct ccb_abort *cab = &ccb->cab; 2195aa75114cSAlexander Motin struct iscsi_outstanding *io, *aio; 21967a03d007SEdward Tomasz Napierala uint32_t initiator_task_tag; 2197aa75114cSAlexander Motin 2198aa75114cSAlexander Motin ISCSI_SESSION_LOCK_ASSERT(is); 2199aa75114cSAlexander Motin 2200aa75114cSAlexander Motin #if 0 2201aa75114cSAlexander Motin KASSERT(is->is_login_phase == false, ("%s called during Login Phase", __func__)); 2202aa75114cSAlexander Motin #else 2203aa75114cSAlexander Motin if (is->is_login_phase) { 2204aa75114cSAlexander Motin ccb->ccb_h.status = CAM_REQ_ABORTED; 2205aa75114cSAlexander Motin xpt_done(ccb); 2206aa75114cSAlexander Motin return; 2207aa75114cSAlexander Motin } 2208aa75114cSAlexander Motin #endif 2209aa75114cSAlexander Motin 2210aa75114cSAlexander Motin aio = iscsi_outstanding_find_ccb(is, cab->abort_ccb); 2211aa75114cSAlexander Motin if (aio == NULL) { 2212aa75114cSAlexander Motin ccb->ccb_h.status = CAM_REQ_CMP; 2213aa75114cSAlexander Motin xpt_done(ccb); 2214aa75114cSAlexander Motin return; 2215aa75114cSAlexander Motin } 2216aa75114cSAlexander Motin 2217d2d52b00SEdward Tomasz Napierala request = icl_pdu_new(is->is_conn, M_NOWAIT); 2218aa75114cSAlexander Motin if (request == NULL) { 2219aa75114cSAlexander Motin ccb->ccb_h.status = CAM_RESRC_UNAVAIL; 2220aa75114cSAlexander Motin xpt_done(ccb); 2221aa75114cSAlexander Motin return; 2222aa75114cSAlexander Motin } 2223aa75114cSAlexander Motin 22247a03d007SEdward Tomasz Napierala initiator_task_tag = is->is_initiator_task_tag++; 22259bee9a98SAlexander Motin if (initiator_task_tag == 0xffffffff) 22269bee9a98SAlexander Motin initiator_task_tag = is->is_initiator_task_tag++; 2227aa75114cSAlexander Motin 2228604c023fSEdward Tomasz Napierala io = iscsi_outstanding_add(is, request, NULL, &initiator_task_tag); 2229aa75114cSAlexander Motin if (io == NULL) { 2230aa75114cSAlexander Motin icl_pdu_free(request); 2231aa75114cSAlexander Motin ccb->ccb_h.status = CAM_RESRC_UNAVAIL; 2232aa75114cSAlexander Motin xpt_done(ccb); 2233aa75114cSAlexander Motin return; 2234aa75114cSAlexander Motin } 22353dd2a7a5SAlexander Motin io->io_referenced_task_tag = aio->io_initiator_task_tag; 22367a03d007SEdward Tomasz Napierala 22377a03d007SEdward Tomasz Napierala bhstmr = (struct iscsi_bhs_task_management_request *)request->ip_bhs; 22387a03d007SEdward Tomasz Napierala bhstmr->bhstmr_opcode = ISCSI_BHS_OPCODE_TASK_REQUEST; 22397a03d007SEdward Tomasz Napierala bhstmr->bhstmr_function = 0x80 | BHSTMR_FUNCTION_ABORT_TASK; 22407a03d007SEdward Tomasz Napierala bhstmr->bhstmr_lun = htobe64(CAM_EXTLUN_BYTE_SWIZZLE(ccb->ccb_h.target_lun)); 22417a03d007SEdward Tomasz Napierala bhstmr->bhstmr_initiator_task_tag = initiator_task_tag; 22427a03d007SEdward Tomasz Napierala bhstmr->bhstmr_referenced_task_tag = aio->io_initiator_task_tag; 22437a03d007SEdward Tomasz Napierala 2244aa75114cSAlexander Motin iscsi_pdu_queue_locked(request); 2245aa75114cSAlexander Motin } 2246aa75114cSAlexander Motin 2247aa75114cSAlexander Motin static void 2248009ea47eSEdward Tomasz Napierala iscsi_action_scsiio(struct iscsi_session *is, union ccb *ccb) 2249009ea47eSEdward Tomasz Napierala { 2250009ea47eSEdward Tomasz Napierala struct icl_pdu *request; 2251009ea47eSEdward Tomasz Napierala struct iscsi_bhs_scsi_command *bhssc; 2252009ea47eSEdward Tomasz Napierala struct ccb_scsiio *csio; 2253aa75114cSAlexander Motin struct iscsi_outstanding *io; 2254009ea47eSEdward Tomasz Napierala size_t len; 22557a03d007SEdward Tomasz Napierala uint32_t initiator_task_tag; 2256009ea47eSEdward Tomasz Napierala int error; 2257009ea47eSEdward Tomasz Napierala 2258009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 2259009ea47eSEdward Tomasz Napierala 2260009ea47eSEdward Tomasz Napierala #if 0 2261009ea47eSEdward Tomasz Napierala KASSERT(is->is_login_phase == false, ("%s called during Login Phase", __func__)); 2262009ea47eSEdward Tomasz Napierala #else 2263009ea47eSEdward Tomasz Napierala if (is->is_login_phase) { 2264009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "called during login phase"); 2265009ea47eSEdward Tomasz Napierala if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 2266009ea47eSEdward Tomasz Napierala xpt_freeze_devq(ccb->ccb_h.path, 1); 2267009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 2268009ea47eSEdward Tomasz Napierala } 2269009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_REQ_ABORTED | CAM_DEV_QFRZN; 2270009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2271009ea47eSEdward Tomasz Napierala return; 2272009ea47eSEdward Tomasz Napierala } 2273009ea47eSEdward Tomasz Napierala #endif 2274009ea47eSEdward Tomasz Napierala 2275d2d52b00SEdward Tomasz Napierala request = icl_pdu_new(is->is_conn, M_NOWAIT); 2276009ea47eSEdward Tomasz Napierala if (request == NULL) { 2277009ea47eSEdward Tomasz Napierala if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 2278009ea47eSEdward Tomasz Napierala xpt_freeze_devq(ccb->ccb_h.path, 1); 2279009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 2280009ea47eSEdward Tomasz Napierala } 2281009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_RESRC_UNAVAIL | CAM_DEV_QFRZN; 2282009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2283009ea47eSEdward Tomasz Napierala return; 2284009ea47eSEdward Tomasz Napierala } 2285009ea47eSEdward Tomasz Napierala 22867a03d007SEdward Tomasz Napierala initiator_task_tag = is->is_initiator_task_tag++; 22879bee9a98SAlexander Motin if (initiator_task_tag == 0xffffffff) 22889bee9a98SAlexander Motin initiator_task_tag = is->is_initiator_task_tag++; 22899bee9a98SAlexander Motin 2290604c023fSEdward Tomasz Napierala io = iscsi_outstanding_add(is, request, ccb, &initiator_task_tag); 22917a03d007SEdward Tomasz Napierala if (io == NULL) { 22927a03d007SEdward Tomasz Napierala icl_pdu_free(request); 22937a03d007SEdward Tomasz Napierala if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 22947a03d007SEdward Tomasz Napierala xpt_freeze_devq(ccb->ccb_h.path, 1); 22957a03d007SEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 22967a03d007SEdward Tomasz Napierala } 22977a03d007SEdward Tomasz Napierala ccb->ccb_h.status = CAM_RESRC_UNAVAIL | CAM_DEV_QFRZN; 22987a03d007SEdward Tomasz Napierala xpt_done(ccb); 22997a03d007SEdward Tomasz Napierala return; 23007a03d007SEdward Tomasz Napierala } 23017a03d007SEdward Tomasz Napierala 2302009ea47eSEdward Tomasz Napierala csio = &ccb->csio; 2303009ea47eSEdward Tomasz Napierala bhssc = (struct iscsi_bhs_scsi_command *)request->ip_bhs; 2304009ea47eSEdward Tomasz Napierala bhssc->bhssc_opcode = ISCSI_BHS_OPCODE_SCSI_COMMAND; 2305009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_F; 2306009ea47eSEdward Tomasz Napierala switch (csio->ccb_h.flags & CAM_DIR_MASK) { 2307009ea47eSEdward Tomasz Napierala case CAM_DIR_IN: 2308009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_R; 2309009ea47eSEdward Tomasz Napierala break; 2310009ea47eSEdward Tomasz Napierala case CAM_DIR_OUT: 2311009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_W; 2312009ea47eSEdward Tomasz Napierala break; 2313009ea47eSEdward Tomasz Napierala } 2314009ea47eSEdward Tomasz Napierala 2315462cf3baSAlexander Motin if ((ccb->ccb_h.flags & CAM_TAG_ACTION_VALID) != 0) { 2316009ea47eSEdward Tomasz Napierala switch (csio->tag_action) { 2317009ea47eSEdward Tomasz Napierala case MSG_HEAD_OF_Q_TAG: 2318009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_HOQ; 2319009ea47eSEdward Tomasz Napierala break; 2320009ea47eSEdward Tomasz Napierala case MSG_ORDERED_Q_TAG: 2321009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_ORDERED; 2322009ea47eSEdward Tomasz Napierala break; 2323009ea47eSEdward Tomasz Napierala case MSG_ACA_TASK: 2324009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_ACA; 2325009ea47eSEdward Tomasz Napierala break; 2326009ea47eSEdward Tomasz Napierala case MSG_SIMPLE_Q_TAG: 2327009ea47eSEdward Tomasz Napierala default: 2328009ea47eSEdward Tomasz Napierala bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_SIMPLE; 2329009ea47eSEdward Tomasz Napierala break; 2330009ea47eSEdward Tomasz Napierala } 2331462cf3baSAlexander Motin } else 2332462cf3baSAlexander Motin bhssc->bhssc_flags |= BHSSC_FLAGS_ATTR_UNTAGGED; 2333009ea47eSEdward Tomasz Napierala 233488364968SAlexander Motin if (is->is_protocol_level >= 2) { 233588364968SAlexander Motin bhssc->bhssc_pri = (csio->priority << BHSSC_PRI_SHIFT) & 233688364968SAlexander Motin BHSSC_PRI_MASK; 233788364968SAlexander Motin } 233888364968SAlexander Motin 2339a9f2f291SEdward Tomasz Napierala bhssc->bhssc_lun = htobe64(CAM_EXTLUN_BYTE_SWIZZLE(ccb->ccb_h.target_lun)); 23407a03d007SEdward Tomasz Napierala bhssc->bhssc_initiator_task_tag = initiator_task_tag; 2341009ea47eSEdward Tomasz Napierala bhssc->bhssc_expected_data_transfer_length = htonl(csio->dxfer_len); 2342009ea47eSEdward Tomasz Napierala KASSERT(csio->cdb_len <= sizeof(bhssc->bhssc_cdb), 2343009ea47eSEdward Tomasz Napierala ("unsupported CDB size %zd", (size_t)csio->cdb_len)); 2344009ea47eSEdward Tomasz Napierala 2345009ea47eSEdward Tomasz Napierala if (csio->ccb_h.flags & CAM_CDB_POINTER) 2346009ea47eSEdward Tomasz Napierala memcpy(&bhssc->bhssc_cdb, csio->cdb_io.cdb_ptr, csio->cdb_len); 2347009ea47eSEdward Tomasz Napierala else 2348009ea47eSEdward Tomasz Napierala memcpy(&bhssc->bhssc_cdb, csio->cdb_io.cdb_bytes, csio->cdb_len); 2349009ea47eSEdward Tomasz Napierala 2350009ea47eSEdward Tomasz Napierala if (is->is_immediate_data && 2351009ea47eSEdward Tomasz Napierala (csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT) { 2352009ea47eSEdward Tomasz Napierala len = csio->dxfer_len; 2353009ea47eSEdward Tomasz Napierala //ISCSI_SESSION_DEBUG(is, "adding %zd of immediate data", len); 2354009ea47eSEdward Tomasz Napierala if (len > is->is_first_burst_length) { 235597b84d34SNavdeep Parhar ISCSI_SESSION_DEBUG(is, "len %zd -> %d", len, is->is_first_burst_length); 2356009ea47eSEdward Tomasz Napierala len = is->is_first_burst_length; 2357009ea47eSEdward Tomasz Napierala } 23580cc7d64aSJohn Baldwin if (len > is->is_conn->ic_max_send_data_segment_length) { 235997b84d34SNavdeep Parhar ISCSI_SESSION_DEBUG(is, "len %zd -> %d", len, 23600cc7d64aSJohn Baldwin is->is_conn->ic_max_send_data_segment_length); 23610cc7d64aSJohn Baldwin len = is->is_conn->ic_max_send_data_segment_length; 23623f9e1172SAlexander Motin } 2363009ea47eSEdward Tomasz Napierala 2364009ea47eSEdward Tomasz Napierala error = icl_pdu_append_data(request, csio->data_ptr, len, M_NOWAIT); 2365009ea47eSEdward Tomasz Napierala if (error != 0) { 2366938bcb04SEdward Tomasz Napierala iscsi_outstanding_remove(is, io); 2367009ea47eSEdward Tomasz Napierala icl_pdu_free(request); 2368009ea47eSEdward Tomasz Napierala if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) { 2369009ea47eSEdward Tomasz Napierala xpt_freeze_devq(ccb->ccb_h.path, 1); 2370009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "freezing devq"); 2371009ea47eSEdward Tomasz Napierala } 2372009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_RESRC_UNAVAIL | CAM_DEV_QFRZN; 2373009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2374009ea47eSEdward Tomasz Napierala return; 2375009ea47eSEdward Tomasz Napierala } 2376009ea47eSEdward Tomasz Napierala } 2377009ea47eSEdward Tomasz Napierala iscsi_pdu_queue_locked(request); 2378009ea47eSEdward Tomasz Napierala } 2379009ea47eSEdward Tomasz Napierala 2380009ea47eSEdward Tomasz Napierala static void 2381009ea47eSEdward Tomasz Napierala iscsi_action(struct cam_sim *sim, union ccb *ccb) 2382009ea47eSEdward Tomasz Napierala { 2383009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 2384009ea47eSEdward Tomasz Napierala 2385009ea47eSEdward Tomasz Napierala is = cam_sim_softc(sim); 2386009ea47eSEdward Tomasz Napierala 2387009ea47eSEdward Tomasz Napierala ISCSI_SESSION_LOCK_ASSERT(is); 2388009ea47eSEdward Tomasz Napierala 2389f1f12e40SEdward Tomasz Napierala if (is->is_terminating || 2390f1f12e40SEdward Tomasz Napierala (is->is_connected == false && fail_on_disconnection)) { 2391009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_DEV_NOT_THERE; 2392009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2393009ea47eSEdward Tomasz Napierala return; 2394009ea47eSEdward Tomasz Napierala } 2395009ea47eSEdward Tomasz Napierala 2396186bcdaaSEdward Tomasz Napierala /* 2397186bcdaaSEdward Tomasz Napierala * Make sure CAM doesn't sneak in a CCB just after freezing the queue. 2398186bcdaaSEdward Tomasz Napierala */ 2399186bcdaaSEdward Tomasz Napierala if (is->is_simq_frozen == true) { 2400186bcdaaSEdward Tomasz Napierala ccb->ccb_h.status &= ~(CAM_SIM_QUEUED | CAM_STATUS_MASK); 2401186bcdaaSEdward Tomasz Napierala ccb->ccb_h.status |= CAM_REQUEUE_REQ; 2402186bcdaaSEdward Tomasz Napierala /* Don't freeze the devq - the SIM queue is already frozen. */ 2403186bcdaaSEdward Tomasz Napierala xpt_done(ccb); 2404186bcdaaSEdward Tomasz Napierala return; 2405186bcdaaSEdward Tomasz Napierala } 2406186bcdaaSEdward Tomasz Napierala 2407009ea47eSEdward Tomasz Napierala switch (ccb->ccb_h.func_code) { 2408009ea47eSEdward Tomasz Napierala case XPT_PATH_INQ: 2409009ea47eSEdward Tomasz Napierala { 2410009ea47eSEdward Tomasz Napierala struct ccb_pathinq *cpi = &ccb->cpi; 2411009ea47eSEdward Tomasz Napierala 2412009ea47eSEdward Tomasz Napierala cpi->version_num = 1; 2413009ea47eSEdward Tomasz Napierala cpi->hba_inquiry = PI_TAG_ABLE; 2414009ea47eSEdward Tomasz Napierala cpi->target_sprt = 0; 2415a9f2f291SEdward Tomasz Napierala cpi->hba_misc = PIM_EXTLUNS; 24167deb68abSEdward Tomasz Napierala /* 24177deb68abSEdward Tomasz Napierala * XXX: It shouldn't ever be NULL; this could be turned 24187deb68abSEdward Tomasz Napierala * into a KASSERT eventually. 24197deb68abSEdward Tomasz Napierala */ 24207deb68abSEdward Tomasz Napierala if (is->is_conn == NULL) 24217deb68abSEdward Tomasz Napierala ISCSI_WARN("NULL conn"); 24227deb68abSEdward Tomasz Napierala else if (is->is_conn->ic_unmapped) 24237deb68abSEdward Tomasz Napierala cpi->hba_misc |= PIM_UNMAPPED; 2424009ea47eSEdward Tomasz Napierala cpi->hba_eng_cnt = 0; 2425009ea47eSEdward Tomasz Napierala cpi->max_target = 0; 242617cf3eb1SEdward Tomasz Napierala /* 242717cf3eb1SEdward Tomasz Napierala * Note that the variable below is only relevant for targets 242817cf3eb1SEdward Tomasz Napierala * that don't claim compliance with anything above SPC2, which 242917cf3eb1SEdward Tomasz Napierala * means they don't support REPORT_LUNS. 243017cf3eb1SEdward Tomasz Napierala */ 243117cf3eb1SEdward Tomasz Napierala cpi->max_lun = 255; 2432a9f2f291SEdward Tomasz Napierala cpi->initiator_id = ~0; 24337843bd03SEdward Tomasz Napierala strlcpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); 24347843bd03SEdward Tomasz Napierala strlcpy(cpi->hba_vid, "iSCSI", HBA_IDLEN); 24357843bd03SEdward Tomasz Napierala strlcpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); 2436009ea47eSEdward Tomasz Napierala cpi->unit_number = cam_sim_unit(sim); 2437009ea47eSEdward Tomasz Napierala cpi->bus_id = cam_sim_bus(sim); 2438009ea47eSEdward Tomasz Napierala cpi->base_transfer_speed = 150000; /* XXX */ 2439009ea47eSEdward Tomasz Napierala cpi->transport = XPORT_ISCSI; 2440009ea47eSEdward Tomasz Napierala cpi->transport_version = 0; 2441009ea47eSEdward Tomasz Napierala cpi->protocol = PROTO_SCSI; 2442009ea47eSEdward Tomasz Napierala cpi->protocol_version = SCSI_REV_SPC3; 2443cd853791SKonstantin Belousov cpi->maxio = maxphys; 2444009ea47eSEdward Tomasz Napierala cpi->ccb_h.status = CAM_REQ_CMP; 2445009ea47eSEdward Tomasz Napierala break; 2446009ea47eSEdward Tomasz Napierala } 2447462cf3baSAlexander Motin case XPT_GET_TRAN_SETTINGS: 2448462cf3baSAlexander Motin { 2449462cf3baSAlexander Motin struct ccb_trans_settings *cts; 2450462cf3baSAlexander Motin struct ccb_trans_settings_scsi *scsi; 2451462cf3baSAlexander Motin 2452462cf3baSAlexander Motin cts = &ccb->cts; 2453462cf3baSAlexander Motin scsi = &cts->proto_specific.scsi; 2454462cf3baSAlexander Motin 2455462cf3baSAlexander Motin cts->protocol = PROTO_SCSI; 2456462cf3baSAlexander Motin cts->protocol_version = SCSI_REV_SPC3; 2457462cf3baSAlexander Motin cts->transport = XPORT_ISCSI; 2458462cf3baSAlexander Motin cts->transport_version = 0; 2459462cf3baSAlexander Motin scsi->valid = CTS_SCSI_VALID_TQ; 2460462cf3baSAlexander Motin scsi->flags = CTS_SCSI_FLAGS_TAG_ENB; 2461462cf3baSAlexander Motin cts->ccb_h.status = CAM_REQ_CMP; 2462462cf3baSAlexander Motin break; 2463462cf3baSAlexander Motin } 2464009ea47eSEdward Tomasz Napierala case XPT_CALC_GEOMETRY: 2465009ea47eSEdward Tomasz Napierala cam_calc_geometry(&ccb->ccg, /*extended*/1); 2466009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_REQ_CMP; 2467009ea47eSEdward Tomasz Napierala break; 2468009ea47eSEdward Tomasz Napierala #if 0 2469009ea47eSEdward Tomasz Napierala /* 2470009ea47eSEdward Tomasz Napierala * XXX: What's the point? 2471009ea47eSEdward Tomasz Napierala */ 2472009ea47eSEdward Tomasz Napierala case XPT_RESET_BUS: 2473009ea47eSEdward Tomasz Napierala case XPT_TERM_IO: 2474009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "faking success for reset, abort, or term_io"); 2475009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_REQ_CMP; 2476009ea47eSEdward Tomasz Napierala break; 2477009ea47eSEdward Tomasz Napierala #endif 2478aa75114cSAlexander Motin case XPT_ABORT: 2479aa75114cSAlexander Motin iscsi_action_abort(is, ccb); 2480aa75114cSAlexander Motin return; 2481009ea47eSEdward Tomasz Napierala case XPT_SCSI_IO: 2482009ea47eSEdward Tomasz Napierala iscsi_action_scsiio(is, ccb); 2483009ea47eSEdward Tomasz Napierala return; 2484009ea47eSEdward Tomasz Napierala default: 2485009ea47eSEdward Tomasz Napierala #if 0 2486009ea47eSEdward Tomasz Napierala ISCSI_SESSION_DEBUG(is, "got unsupported code 0x%x", ccb->ccb_h.func_code); 2487009ea47eSEdward Tomasz Napierala #endif 2488009ea47eSEdward Tomasz Napierala ccb->ccb_h.status = CAM_FUNC_NOTAVAIL; 2489009ea47eSEdward Tomasz Napierala break; 2490009ea47eSEdward Tomasz Napierala } 2491009ea47eSEdward Tomasz Napierala xpt_done(ccb); 2492009ea47eSEdward Tomasz Napierala } 2493009ea47eSEdward Tomasz Napierala 2494009ea47eSEdward Tomasz Napierala static void 2495481b36c6SSteven Hartland iscsi_terminate_sessions(struct iscsi_softc *sc) 2496009ea47eSEdward Tomasz Napierala { 2497009ea47eSEdward Tomasz Napierala struct iscsi_session *is; 2498009ea47eSEdward Tomasz Napierala 2499481b36c6SSteven Hartland sx_slock(&sc->sc_lock); 2500481b36c6SSteven Hartland TAILQ_FOREACH(is, &sc->sc_sessions, is_next) 2501481b36c6SSteven Hartland iscsi_session_terminate(is); 2502481b36c6SSteven Hartland while(!TAILQ_EMPTY(&sc->sc_sessions)) { 2503481b36c6SSteven Hartland ISCSI_DEBUG("waiting for sessions to terminate"); 2504481b36c6SSteven Hartland cv_wait(&sc->sc_cv, &sc->sc_lock); 2505481b36c6SSteven Hartland } 2506481b36c6SSteven Hartland ISCSI_DEBUG("all sessions terminated"); 2507481b36c6SSteven Hartland sx_sunlock(&sc->sc_lock); 2508481b36c6SSteven Hartland } 2509481b36c6SSteven Hartland 2510481b36c6SSteven Hartland static void 2511481b36c6SSteven Hartland iscsi_shutdown_pre(struct iscsi_softc *sc) 2512481b36c6SSteven Hartland { 2513481b36c6SSteven Hartland struct iscsi_session *is; 2514481b36c6SSteven Hartland 2515481b36c6SSteven Hartland if (!fail_on_shutdown) 2516481b36c6SSteven Hartland return; 2517009ea47eSEdward Tomasz Napierala 2518e553ca49SEdward Tomasz Napierala /* 2519e553ca49SEdward Tomasz Napierala * If we have any sessions waiting for reconnection, request 2520e553ca49SEdward Tomasz Napierala * maintenance thread to fail them immediately instead of waiting 2521e553ca49SEdward Tomasz Napierala * for reconnect timeout. 2522481b36c6SSteven Hartland * 2523481b36c6SSteven Hartland * This prevents LUNs with mounted filesystems that are supported 2524481b36c6SSteven Hartland * by disconnected iSCSI sessions from hanging, however it will 2525481b36c6SSteven Hartland * fail all queued BIOs. 2526e553ca49SEdward Tomasz Napierala */ 2527481b36c6SSteven Hartland ISCSI_DEBUG("forcing failing all disconnected sessions due to shutdown"); 2528481b36c6SSteven Hartland 2529481b36c6SSteven Hartland fail_on_disconnection = 1; 2530481b36c6SSteven Hartland 2531009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 2532e553ca49SEdward Tomasz Napierala TAILQ_FOREACH(is, &sc->sc_sessions, is_next) { 2533e553ca49SEdward Tomasz Napierala ISCSI_SESSION_LOCK(is); 2534481b36c6SSteven Hartland if (!is->is_connected) { 2535481b36c6SSteven Hartland ISCSI_SESSION_DEBUG(is, "force failing disconnected session early"); 2536e553ca49SEdward Tomasz Napierala iscsi_session_reconnect(is); 2537481b36c6SSteven Hartland } 2538e553ca49SEdward Tomasz Napierala ISCSI_SESSION_UNLOCK(is); 2539e553ca49SEdward Tomasz Napierala } 2540009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 2541009ea47eSEdward Tomasz Napierala } 2542009ea47eSEdward Tomasz Napierala 2543481b36c6SSteven Hartland static void 2544481b36c6SSteven Hartland iscsi_shutdown_post(struct iscsi_softc *sc) 2545481b36c6SSteven Hartland { 2546481b36c6SSteven Hartland 2547879e0604SMateusz Guzik if (!KERNEL_PANICKED()) { 2548481b36c6SSteven Hartland ISCSI_DEBUG("removing all sessions due to shutdown"); 2549481b36c6SSteven Hartland iscsi_terminate_sessions(sc); 2550481b36c6SSteven Hartland } 2551e54fb4ffSAndriy Gapon } 2552481b36c6SSteven Hartland 2553009ea47eSEdward Tomasz Napierala static int 2554009ea47eSEdward Tomasz Napierala iscsi_load(void) 2555009ea47eSEdward Tomasz Napierala { 2556009ea47eSEdward Tomasz Napierala int error; 2557009ea47eSEdward Tomasz Napierala 2558009ea47eSEdward Tomasz Napierala sc = malloc(sizeof(*sc), M_ISCSI, M_ZERO | M_WAITOK); 2559009ea47eSEdward Tomasz Napierala sx_init(&sc->sc_lock, "iscsi"); 2560009ea47eSEdward Tomasz Napierala TAILQ_INIT(&sc->sc_sessions); 2561009ea47eSEdward Tomasz Napierala cv_init(&sc->sc_cv, "iscsi_cv"); 2562009ea47eSEdward Tomasz Napierala 2563009ea47eSEdward Tomasz Napierala iscsi_outstanding_zone = uma_zcreate("iscsi_outstanding", 2564009ea47eSEdward Tomasz Napierala sizeof(struct iscsi_outstanding), NULL, NULL, NULL, NULL, 2565c28c09c1SEdward Tomasz Napierala UMA_ALIGN_PTR, 0); 2566009ea47eSEdward Tomasz Napierala 2567009ea47eSEdward Tomasz Napierala error = make_dev_p(MAKEDEV_CHECKNAME, &sc->sc_cdev, &iscsi_cdevsw, 2568009ea47eSEdward Tomasz Napierala NULL, UID_ROOT, GID_WHEEL, 0600, "iscsi"); 2569009ea47eSEdward Tomasz Napierala if (error != 0) { 2570009ea47eSEdward Tomasz Napierala ISCSI_WARN("failed to create device node, error %d", error); 2571009ea47eSEdward Tomasz Napierala return (error); 2572009ea47eSEdward Tomasz Napierala } 2573009ea47eSEdward Tomasz Napierala sc->sc_cdev->si_drv1 = sc; 2574009ea47eSEdward Tomasz Napierala 2575481b36c6SSteven Hartland sc->sc_shutdown_pre_eh = EVENTHANDLER_REGISTER(shutdown_pre_sync, 2576481b36c6SSteven Hartland iscsi_shutdown_pre, sc, SHUTDOWN_PRI_FIRST); 2577481b36c6SSteven Hartland /* 2578481b36c6SSteven Hartland * shutdown_post_sync needs to run after filesystem shutdown and before 2579481b36c6SSteven Hartland * CAM shutdown - otherwise when rebooting with an iSCSI session that is 2580481b36c6SSteven Hartland * disconnected but has outstanding requests, dashutdown() will hang on 2581481b36c6SSteven Hartland * cam_periph_runccb(). 2582481b36c6SSteven Hartland */ 2583481b36c6SSteven Hartland sc->sc_shutdown_post_eh = EVENTHANDLER_REGISTER(shutdown_post_sync, 2584481b36c6SSteven Hartland iscsi_shutdown_post, sc, SHUTDOWN_PRI_DEFAULT - 1); 2585009ea47eSEdward Tomasz Napierala 2586009ea47eSEdward Tomasz Napierala return (0); 2587009ea47eSEdward Tomasz Napierala } 2588009ea47eSEdward Tomasz Napierala 2589009ea47eSEdward Tomasz Napierala static int 2590009ea47eSEdward Tomasz Napierala iscsi_unload(void) 2591009ea47eSEdward Tomasz Napierala { 2592009ea47eSEdward Tomasz Napierala 259389df4847SJohn Baldwin /* Awaken any threads asleep in iscsi_ioctl(). */ 259489df4847SJohn Baldwin sx_xlock(&sc->sc_lock); 259589df4847SJohn Baldwin sc->sc_unloading = true; 259689df4847SJohn Baldwin cv_signal(&sc->sc_cv); 259789df4847SJohn Baldwin sx_xunlock(&sc->sc_lock); 259889df4847SJohn Baldwin 2599a667cf73SEdward Tomasz Napierala if (sc->sc_cdev != NULL) { 2600009ea47eSEdward Tomasz Napierala ISCSI_DEBUG("removing device node"); 2601009ea47eSEdward Tomasz Napierala destroy_dev(sc->sc_cdev); 2602009ea47eSEdward Tomasz Napierala ISCSI_DEBUG("device node removed"); 2603a667cf73SEdward Tomasz Napierala } 2604009ea47eSEdward Tomasz Napierala 2605481b36c6SSteven Hartland if (sc->sc_shutdown_pre_eh != NULL) 2606481b36c6SSteven Hartland EVENTHANDLER_DEREGISTER(shutdown_pre_sync, sc->sc_shutdown_pre_eh); 2607481b36c6SSteven Hartland if (sc->sc_shutdown_post_eh != NULL) 2608481b36c6SSteven Hartland EVENTHANDLER_DEREGISTER(shutdown_post_sync, sc->sc_shutdown_post_eh); 2609009ea47eSEdward Tomasz Napierala 2610481b36c6SSteven Hartland iscsi_terminate_sessions(sc); 2611009ea47eSEdward Tomasz Napierala 2612009ea47eSEdward Tomasz Napierala uma_zdestroy(iscsi_outstanding_zone); 2613009ea47eSEdward Tomasz Napierala sx_destroy(&sc->sc_lock); 2614009ea47eSEdward Tomasz Napierala cv_destroy(&sc->sc_cv); 2615009ea47eSEdward Tomasz Napierala free(sc, M_ISCSI); 2616009ea47eSEdward Tomasz Napierala return (0); 2617009ea47eSEdward Tomasz Napierala } 2618009ea47eSEdward Tomasz Napierala 2619009ea47eSEdward Tomasz Napierala static int 2620009ea47eSEdward Tomasz Napierala iscsi_quiesce(void) 2621009ea47eSEdward Tomasz Napierala { 2622009ea47eSEdward Tomasz Napierala sx_slock(&sc->sc_lock); 2623009ea47eSEdward Tomasz Napierala if (!TAILQ_EMPTY(&sc->sc_sessions)) { 2624009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 2625009ea47eSEdward Tomasz Napierala return (EBUSY); 2626009ea47eSEdward Tomasz Napierala } 2627009ea47eSEdward Tomasz Napierala sx_sunlock(&sc->sc_lock); 2628009ea47eSEdward Tomasz Napierala return (0); 2629009ea47eSEdward Tomasz Napierala } 2630009ea47eSEdward Tomasz Napierala 2631009ea47eSEdward Tomasz Napierala static int 2632009ea47eSEdward Tomasz Napierala iscsi_modevent(module_t mod, int what, void *arg) 2633009ea47eSEdward Tomasz Napierala { 2634009ea47eSEdward Tomasz Napierala int error; 2635009ea47eSEdward Tomasz Napierala 2636009ea47eSEdward Tomasz Napierala switch (what) { 2637009ea47eSEdward Tomasz Napierala case MOD_LOAD: 2638009ea47eSEdward Tomasz Napierala error = iscsi_load(); 2639009ea47eSEdward Tomasz Napierala break; 2640009ea47eSEdward Tomasz Napierala case MOD_UNLOAD: 2641009ea47eSEdward Tomasz Napierala error = iscsi_unload(); 2642009ea47eSEdward Tomasz Napierala break; 2643009ea47eSEdward Tomasz Napierala case MOD_QUIESCE: 2644009ea47eSEdward Tomasz Napierala error = iscsi_quiesce(); 2645009ea47eSEdward Tomasz Napierala break; 2646009ea47eSEdward Tomasz Napierala default: 2647009ea47eSEdward Tomasz Napierala error = EINVAL; 2648009ea47eSEdward Tomasz Napierala break; 2649009ea47eSEdward Tomasz Napierala } 2650009ea47eSEdward Tomasz Napierala return (error); 2651009ea47eSEdward Tomasz Napierala } 2652009ea47eSEdward Tomasz Napierala 2653009ea47eSEdward Tomasz Napierala moduledata_t iscsi_data = { 2654009ea47eSEdward Tomasz Napierala "iscsi", 2655009ea47eSEdward Tomasz Napierala iscsi_modevent, 2656009ea47eSEdward Tomasz Napierala 0 2657009ea47eSEdward Tomasz Napierala }; 2658009ea47eSEdward Tomasz Napierala 2659009ea47eSEdward Tomasz Napierala DECLARE_MODULE(iscsi, iscsi_data, SI_SUB_DRIVERS, SI_ORDER_MIDDLE); 2660009ea47eSEdward Tomasz Napierala MODULE_DEPEND(iscsi, cam, 1, 1, 1); 2661009ea47eSEdward Tomasz Napierala MODULE_DEPEND(iscsi, icl, 1, 1, 1); 2662