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d="scan'208";a="276022403" Received: from rcdn-l-core-07.cisco.com ([173.37.255.144]) by rcdn-iport-5.cisco.com with ESMTP/TLS/TLS_AES_256_GCM_SHA384; 18 Oct 2024 16:18:12 +0000 Received: from fedora.cisco.com (unknown [10.24.40.136]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: kartilak@cisco.com) by rcdn-l-core-07.cisco.com (Postfix) with ESMTPSA id EB3BD18000233; Fri, 18 Oct 2024 16:18:09 +0000 (GMT) From: Karan Tilak Kumar To: sebaddel@cisco.com Cc: arulponn@cisco.com, djhawar@cisco.com, gcboffa@cisco.com, mkai2@cisco.com, satishkh@cisco.com, aeasi@cisco.com, jejb@linux.ibm.com, martin.petersen@oracle.com, linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org, Karan Tilak Kumar , kernel test robot Subject: [PATCH v5 06/14] scsi: fnic: Add and integrate support for FDMI Date: Fri, 18 Oct 2024 09:14:01 -0700 Message-ID: <20241018161409.4442-7-kartilak@cisco.com> X-Mailer: git-send-email 2.47.0 In-Reply-To: <20241018161409.4442-1-kartilak@cisco.com> References: <20241018161409.4442-1-kartilak@cisco.com> Precedence: bulk X-Mailing-List: linux-scsi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Authenticated-User: kartilak@cisco.com X-Outbound-SMTP-Client: 10.24.40.136, [10.24.40.136] X-Outbound-Node: rcdn-l-core-07.cisco.com Add support for Fabric-Device Management Interface (FDMI) by introducing PCI device IDs for Cisco Hardware. Introduce a module parameter to enable/disable FDMI support. Integrate support for FDMI. Reported-by: kernel test robot Closes: https://lore.kernel.org/oe-kbuild-all/202406110734.p2v8dq9v-lkp @intel.com/ Reviewed-by: Sesidhar Baddela Co-developed-by: Gian Carlo Boffa Signed-off-by: Gian Carlo Boffa Co-developed-by: Arulprabhu Ponnusamy Signed-off-by: Arulprabhu Ponnusamy Co-developed-by: Arun Easi Signed-off-by: Arun Easi Co-developed-by: Karan Tilak Kumar Signed-off-by: Karan Tilak Kumar --- Changes between v4 and v5: Incorporate review comments from Martin: Modify attribution appropriately. Remove spurious newline at the end of fdls_disc.c. Remove spurious newline at the end of fnic_main.c. Changes between v2 and v3: Incorporate review comments from Hannes: Replace redundant definitions with standard definitions. Changes between v1 and v2: Incorporate review comments from Hannes from other patches: Replace pr_info with dev_info. Replace htonll() with get_unaligned_be64(). Replace definitions with standard definitions from fc_els.h. Use standard definitions from scsi_transport_fc.h for port speeds. Refactor definitions in struct fnic to avoid cache holes. Replace memcmp with not equal to operator. Fix warning from kernel test robot: Remove version.h --- drivers/scsi/fnic/Makefile | 3 +- drivers/scsi/fnic/fdls_disc.c | 468 ++++++++++++++++++++++ drivers/scsi/fnic/fnic.h | 72 ++++ drivers/scsi/fnic/fnic_main.c | 25 ++ drivers/scsi/fnic/fnic_pci_subsys_devid.c | 131 ++++++ 5 files changed, 698 insertions(+), 1 deletion(-) create mode 100644 drivers/scsi/fnic/fnic_pci_subsys_devid.c diff --git a/drivers/scsi/fnic/Makefile b/drivers/scsi/fnic/Makefile index 3bd6b1c8b643..af156c69da0c 100644 --- a/drivers/scsi/fnic/Makefile +++ b/drivers/scsi/fnic/Makefile @@ -16,4 +16,5 @@ fnic-y := \ vnic_intr.o \ vnic_rq.o \ vnic_wq_copy.o \ - vnic_wq.o + vnic_wq.o \ + fnic_pci_subsys_devid.o diff --git a/drivers/scsi/fnic/fdls_disc.c b/drivers/scsi/fnic/fdls_disc.c index a9a98ddc3a84..0b1d69ff19df 100644 --- a/drivers/scsi/fnic/fdls_disc.c +++ b/drivers/scsi/fnic/fdls_disc.c @@ -9,11 +9,23 @@ #include "fdls_fc.h" #include "fnic_fdls.h" #include +#include #include #define FC_FC4_TYPE_SCSI 0x08 +#define PORT_SPEED_BIT_8 8 +#define PORT_SPEED_BIT_9 9 +#define PORT_SPEED_BIT_14 14 +#define PORT_SPEED_BIT_15 15 static void fdls_send_rpn_id(struct fnic_iport_s *iport); +static void fdls_fdmi_register_hba(struct fnic_iport_s *iport); +static void fdls_fdmi_register_pa(struct fnic_iport_s *iport); +#define FDLS_FDMI_PLOGI_PENDING 0x1 +#define FDLS_FDMI_REG_HBA_PENDING 0x2 +#define FDLS_FDMI_RPA_PENDING 0x4 +#define FDLS_FDMI_ABORT_PENDING 0x8 +#define FDLS_FDMI_MAX_RETRY 3 /* Frame initialization */ /* @@ -84,6 +96,70 @@ struct fc_std_els_prli fnic_std_prli_req = { .spp_params = cpu_to_be32(0xA2)} }; +/* + * Variables: + * sid, port_id, port_name + */ +struct fc_std_fdmi_rhba fnic_std_fdmi_rhba = { + .fchdr = {.fh_r_ctl = FC_RCTL_DD_UNSOL_CTL, + .fh_d_id = {0xFF, 0XFF, 0XFA}, + .fh_type = FC_TYPE_CT, .fh_f_ctl = {FNIC_ELS_REQ_FCTL, 0, 0}, + .fh_rx_id = 0xFFFF}, + .fc_std_ct_hdr = {.ct_rev = FC_CT_REV, .ct_fs_type = FC_FST_MGMT, + .ct_fs_subtype = FC_FDMI_SUBTYPE, + .ct_cmd = cpu_to_be16(FC_FDMI_RHBA)}, + .num_ports = FNIC_FDMI_NUM_PORTS, + .num_hba_attributes = FNIC_FDMI_NUM_HBA_ATTRS, + .type_nn = FNIC_FDMI_TYPE_NODE_NAME, + .length_nn = FNIC_FDMI_NN_LEN, + .type_manu = FNIC_FDMI_TYPE_MANUFACTURER, + .length_manu = FNIC_FDMI_MANU_LEN, + .manufacturer = FNIC_FDMI_MANUFACTURER, + .type_serial = FNIC_FDMI_TYPE_SERIAL_NUMBER, + .length_serial = FNIC_FDMI_SERIAL_LEN, + .type_model = FNIC_FDMI_TYPE_MODEL, + .length_model = FNIC_FDMI_MODEL_LEN, + .type_model_des = FNIC_FDMI_TYPE_MODEL_DES, + .length_model_des = FNIC_FDMI_MODEL_DES_LEN, + .model_description = FNIC_FDMI_MODEL_DESCRIPTION, + .type_hw_ver = FNIC_FDMI_TYPE_HARDWARE_VERSION, + .length_hw_ver = FNIC_FDMI_HW_VER_LEN, + .type_dr_ver = FNIC_FDMI_TYPE_DRIVER_VERSION, + .length_dr_ver = FNIC_FDMI_DR_VER_LEN, + .type_rom_ver = FNIC_FDMI_TYPE_ROM_VERSION, + .length_rom_ver = FNIC_FDMI_ROM_VER_LEN, + .type_fw_ver = FNIC_FDMI_TYPE_FIRMWARE_VERSION, + .length_fw_ver = FNIC_FDMI_FW_VER_LEN, +}; + +/* + * Variables + *sid, port_id, port_name + */ +struct fc_std_fdmi_rpa fnic_std_fdmi_rpa = { + .fchdr = {.fh_r_ctl = FC_RCTL_DD_UNSOL_CTL, + .fh_d_id = {0xFF, 0xFF, 0xFA}, + .fh_type = FC_TYPE_CT, .fh_f_ctl = {FNIC_ELS_REQ_FCTL, 0, 0}, + .fh_rx_id = 0xFFFF}, + .fc_std_ct_hdr = {.ct_rev = FC_CT_REV, .ct_fs_type = FC_FST_MGMT, + .ct_fs_subtype = FC_FDMI_SUBTYPE, + .ct_cmd = cpu_to_be16(FC_FDMI_RPA)}, + .num_port_attributes = FNIC_FDMI_NUM_PORT_ATTRS, + .type_fc4 = FNIC_FDMI_TYPE_FC4_TYPES, + .length_fc4 = FNIC_FDMI_FC4_LEN, + .type_supp_speed = FNIC_FDMI_TYPE_SUPPORTED_SPEEDS, + .length_supp_speed = FNIC_FDMI_SUPP_SPEED_LEN, + .type_cur_speed = FNIC_FDMI_TYPE_CURRENT_SPEED, + .length_cur_speed = FNIC_FDMI_CUR_SPEED_LEN, + .type_max_frame_size = FNIC_FDMI_TYPE_MAX_FRAME_SIZE, + .length_max_frame_size = FNIC_FDMI_MFS_LEN, + .max_frame_size = FNIC_FDMI_MFS, + .type_os_name = FNIC_FDMI_TYPE_OS_NAME, + .length_os_name = FNIC_FDMI_OS_NAME_LEN, + .type_host_name = FNIC_FDMI_TYPE_HOST_NAME, + .length_host_name = FNIC_FDMI_HN_LEN, +}; + /* * Variables: * fh_s_id, port_id, port_name @@ -224,6 +300,7 @@ static void fdls_target_restart_nexus(struct fnic_tport_s *tport); static void fdls_start_tport_timer(struct fnic_iport_s *iport, struct fnic_tport_s *tport, int timeout); static void fdls_tport_timer_callback(struct timer_list *t); +static void fdls_send_fdmi_plogi(struct fnic_iport_s *iport); static void fdls_start_fabric_timer(struct fnic_iport_s *iport, int timeout); static void @@ -337,6 +414,15 @@ uint16_t fdls_alloc_fabric_oxid(struct fnic_iport_s *iport, * separately. */ switch (exp_rsp_type) { + case FNIC_FDMI_PLOGI_RSP: + oxid_pool->active_oxid_fdmi_plogi = oxid; + break; + case FNIC_FDMI_REG_HBA_RSP: + oxid_pool->active_oxid_fdmi_rhba = oxid; + break; + case FNIC_FDMI_RPA_RSP: + oxid_pool->active_oxid_fdmi_rpa = oxid; + break; default: oxid_pool->active_oxid_fabric_req = oxid; break; @@ -372,6 +458,21 @@ static inline void fdls_schedule_fabric_oxid_free(struct fnic_iport_s iport->fabric_oxid_pool.active_oxid_fabric_req); } +static inline void fdls_schedule_fdmi_oxid_free(struct fnic_iport_s *iport) +{ + if (iport->fabric.fdmi_pending & FDLS_FDMI_PLOGI_PENDING) + fdls_schedule_oxid_free(&iport->fdmi_oxid_pool.meta, + iport->fdmi_oxid_pool.active_oxid_fdmi_plogi); + + if (iport->fabric.fdmi_pending & FDLS_FDMI_REG_HBA_PENDING) + fdls_schedule_oxid_free(&iport->fdmi_oxid_pool.meta, + iport->fdmi_oxid_pool.active_oxid_fdmi_rhba); + + if (iport->fabric.fdmi_pending & FDLS_FDMI_RPA_PENDING) + fdls_schedule_oxid_free(&iport->fdmi_oxid_pool.meta, + iport->fdmi_oxid_pool.active_oxid_fdmi_rpa); +} + static inline void fdls_schedule_tgt_oxid_free(struct fnic_iport_s *iport, struct fnic_tgt_oxid_pool_s *oxid_pool, uint16_t oxid) @@ -406,6 +507,14 @@ static int fdls_is_oxid_in_fabric_range(uint16_t oxid) (oxid_unmasked <= FDLS_FABRIC_OXID_POOL_END)); } +static int fdls_is_oxid_in_fdmi_range(uint16_t oxid) +{ + uint16_t oxid_unmasked = FDLS_OXID_RSP_TYPE_UNMASKED(oxid); + + return ((oxid_unmasked >= FDLS_FDMI_OXID_POOL_BASE) && + (oxid_unmasked <= FDLS_FDMI_OXID_POOL_END)); +} + void fdls_init_tgt_oxid_pool(struct fnic_iport_s *iport) { memset(&iport->plogi_oxid_pool, 0, sizeof(iport->plogi_oxid_pool)); @@ -671,6 +780,42 @@ static void fdls_send_fabric_abts(struct fnic_iport_s *iport) iport->fabric.timer_pending = 1; } +static void fdls_send_fdmi_abts(struct fnic_iport_s *iport) +{ + uint8_t fcid[3]; + struct fc_frame_header fabric_abort = fc_std_fabric_abts; + struct fc_frame_header *fabric_abts = &fabric_abort; + struct fnic_fabric_oxid_pool_s *oxid_pool = &iport->fdmi_oxid_pool; + int fdmi_tov; + uint16_t oxid; + + hton24(fcid, 0XFFFFFA); + + if (iport->fabric.fdmi_pending & FDLS_FDMI_PLOGI_PENDING) { + oxid = htons(oxid_pool->active_oxid_fdmi_plogi); + FNIC_STD_SET_OX_ID(fabric_abts, oxid); + fnic_send_fcoe_frame(iport, fabric_abts, + sizeof(struct fc_frame_header)); + } else { + if (iport->fabric.fdmi_pending & FDLS_FDMI_REG_HBA_PENDING) { + oxid = htons(oxid_pool->active_oxid_fdmi_rhba); + FNIC_STD_SET_OX_ID(fabric_abts, oxid); + fnic_send_fcoe_frame(iport, fabric_abts, + sizeof(struct fc_frame_header)); + } + if (iport->fabric.fdmi_pending & FDLS_FDMI_RPA_PENDING) { + oxid = htons(oxid_pool->active_oxid_fdmi_rpa); + FNIC_STD_SET_OX_ID(fabric_abts, oxid); + fnic_send_fcoe_frame(iport, fabric_abts, + sizeof(struct fc_frame_header)); + } + } + + fdmi_tov = jiffies + msecs_to_jiffies(2 * iport->e_d_tov); + mod_timer(&iport->fabric.fdmi_timer, round_jiffies(fdmi_tov)); + iport->fabric.fdmi_pending |= FDLS_FDMI_ABORT_PENDING; +} + static void fdls_send_fabric_flogi(struct fnic_iport_s *iport) { struct fc_std_flogi flogi; @@ -738,6 +883,47 @@ static void fdls_send_fabric_plogi(struct fnic_iport_s *iport) fdls_start_fabric_timer(iport, 2 * iport->e_d_tov); } +static void fdls_send_fdmi_plogi(struct fnic_iport_s *iport) +{ + struct fc_std_flogi plogi; + struct fc_frame_header *fchdr = &plogi.fchdr; + uint8_t fcid[3]; + struct fnic *fnic = iport->fnic; + u64 fdmi_tov; + uint16_t oxid; + + memcpy(&plogi, &fnic_std_plogi_req, sizeof(plogi)); + + oxid = fdls_alloc_fabric_oxid(iport, &iport->fdmi_oxid_pool, + FNIC_FDMI_PLOGI_RSP); + if (oxid == 0xFFFF) { + FNIC_FCS_DBG(KERN_INFO, fnic->lport->host, fnic->fnic_num, + "Failed to allocate OXID to send fdmi plogi %p", + iport); + return; + } + + hton24(fcid, iport->fcid); + + FNIC_STD_SET_S_ID(fchdr, fcid); + hton24(fcid, 0XFFFFFA); + FNIC_STD_SET_D_ID(fchdr, fcid); + FNIC_STD_SET_OX_ID(fchdr, htons(oxid)); + FNIC_LOGI_SET_NPORT_NAME(&plogi.els, iport->wwpn); + FNIC_LOGI_SET_NODE_NAME(&plogi.els, iport->wwnn); + FNIC_LOGI_SET_RDF_SIZE(&plogi.els, iport->max_payload_size); + + FNIC_FCS_DBG(KERN_INFO, fnic->lport->host, fnic->fnic_num, + "fcid: 0x%x: FDLS send FDMI PLOGI with oxid:%x", + iport->fcid, oxid); + + fnic_send_fcoe_frame(iport, &plogi, sizeof(struct fc_std_flogi)); + + fdmi_tov = jiffies + msecs_to_jiffies(2 * iport->e_d_tov); + mod_timer(&iport->fabric.fdmi_timer, round_jiffies(fdmi_tov)); + iport->fabric.fdmi_pending = FDLS_FDMI_PLOGI_PENDING; +} + static void fdls_send_rpn_id(struct fnic_iport_s *iport) { struct fc_std_rpn_id rpn_id; @@ -1375,6 +1561,126 @@ struct fnic_tport_s *fnic_find_tport_by_wwpn(struct fnic_iport_s *iport, return NULL; } +static void fdls_fdmi_register_hba(struct fnic_iport_s *iport) +{ + struct fc_std_fdmi_rhba fdmi_rhba; + uint8_t fcid[3]; + uint16_t len; + int err; + struct fnic *fnic = iport->fnic; + struct vnic_devcmd_fw_info *fw_info = NULL; + uint16_t oxid; + + memcpy(&fdmi_rhba, &fnic_std_fdmi_rhba, + sizeof(struct fc_std_fdmi_rhba)); + + hton24(fcid, iport->fcid); + FNIC_STD_SET_S_ID((&fdmi_rhba.fchdr), fcid); + + oxid = fdls_alloc_fabric_oxid(iport, &iport->fdmi_oxid_pool, + FNIC_FDMI_REG_HBA_RSP); + if (oxid == 0xFFFF) { + FNIC_FCS_DBG(KERN_INFO, fnic->lport->host, fnic->fnic_num, + "Failed to allocate OXID to send fdmi reg hba %p", + iport); + return; + } + FNIC_STD_SET_OX_ID(&fdmi_rhba.fchdr, htons(oxid)); + + fdmi_rhba.hba_identifier = get_unaligned_be64(&iport->wwpn); + fdmi_rhba.port_name = get_unaligned_be64(&iport->wwpn); + fdmi_rhba.node_name = get_unaligned_be64(&iport->wwnn); + + err = vnic_dev_fw_info(fnic->vdev, &fw_info); + if (!err) { + snprintf(fdmi_rhba.serial_num, sizeof(fdmi_rhba.serial_num) - 1, + "%s", fw_info->hw_serial_number); + snprintf(fdmi_rhba.hardware_ver, + sizeof(fdmi_rhba.hardware_ver) - 1, "%s", + fw_info->hw_version); + strscpy(fdmi_rhba.firmware_ver, fw_info->fw_version, + sizeof(fdmi_rhba.firmware_ver) - 1); + + len = ARRAY_SIZE(fdmi_rhba.model); + if (fnic->subsys_desc_len >= len) + fnic->subsys_desc_len = len - 1; + memcpy(&fdmi_rhba.model, fnic->subsys_desc, + fnic->subsys_desc_len); + fdmi_rhba.model[fnic->subsys_desc_len] = 0x00; + } + + snprintf(fdmi_rhba.driver_ver, sizeof(fdmi_rhba.driver_ver) - 1, "%s", + DRV_VERSION); + snprintf(fdmi_rhba.rom_ver, sizeof(fdmi_rhba.rom_ver) - 1, "%s", "N/A"); + + fnic_send_fcoe_frame(iport, &fdmi_rhba, + sizeof(struct fc_std_fdmi_rhba)); + iport->fabric.fdmi_pending |= FDLS_FDMI_REG_HBA_PENDING; +} + +static void fdls_fdmi_register_pa(struct fnic_iport_s *iport) +{ + struct fc_std_fdmi_rpa fdmi_rpa; + + uint8_t fcid[3]; + struct fnic *fnic = iport->fnic; + u32 port_speed_bm; + u32 port_speed = vnic_dev_port_speed(fnic->vdev); + uint16_t oxid; + + memcpy(&fdmi_rpa, &fnic_std_fdmi_rpa, sizeof(struct fc_std_fdmi_rpa)); + hton24(fcid, iport->fcid); + FNIC_STD_SET_S_ID((&fdmi_rpa.fchdr), fcid); + + oxid = fdls_alloc_fabric_oxid(iport, &iport->fdmi_oxid_pool, + FNIC_FDMI_RPA_RSP); + if (oxid == 0xFFFF) { + FNIC_FCS_DBG(KERN_INFO, fnic->lport->host, fnic->fnic_num, + "Failed to allocate OXID to send fdmi rpa %p", + iport); + return; + } + FNIC_STD_SET_OX_ID(&fdmi_rpa.fchdr, htons(oxid)); + + fdmi_rpa.port_name = get_unaligned_be64(&iport->wwpn); + + /* MDS does not support GIGE speed. + * Bit shift standard definitions from scsi_transport_fc.h to + * match FC spec. + */ + switch (port_speed) { + case DCEM_PORTSPEED_10G: + case DCEM_PORTSPEED_20G: + /* There is no bit for 20G */ + port_speed_bm = FC_PORTSPEED_10GBIT << PORT_SPEED_BIT_14; + break; + case DCEM_PORTSPEED_25G: + port_speed_bm = FC_PORTSPEED_25GBIT << PORT_SPEED_BIT_8; + break; + case DCEM_PORTSPEED_40G: + case DCEM_PORTSPEED_4x10G: + port_speed_bm = FC_PORTSPEED_40GBIT << PORT_SPEED_BIT_9; + break; + case DCEM_PORTSPEED_100G: + port_speed_bm = FC_PORTSPEED_100GBIT << PORT_SPEED_BIT_8; + break; + default: + port_speed_bm = FC_PORTSPEED_1GBIT << PORT_SPEED_BIT_15; + break; + } + fdmi_rpa.supported_speed = htonl(port_speed_bm); + fdmi_rpa.current_speed = htonl(port_speed_bm); + fdmi_rpa.fc4_type[2] = 1; + snprintf(fdmi_rpa.os_name, sizeof(fdmi_rpa.os_name) - 1, "host%d", + fnic->lport->host->host_no); + sprintf(fc_host_system_hostname(fnic->lport->host), "%s", utsname()->nodename); + snprintf(fdmi_rpa.host_name, sizeof(fdmi_rpa.host_name) - 1, "%s", + fc_host_system_hostname(fnic->lport->host)); + + fnic_send_fcoe_frame(iport, &fdmi_rpa, sizeof(struct fc_std_fdmi_rpa)); + iport->fabric.fdmi_pending |= FDLS_FDMI_RPA_PENDING; +} + void fdls_fabric_timer_callback(struct timer_list *t) { struct fnic_fdls_fabric_s *fabric = from_timer(fabric, t, retry_timer); @@ -1548,6 +1854,43 @@ void fdls_fabric_timer_callback(struct timer_list *t) spin_unlock_irqrestore(&fnic->fnic_lock, flags); } +void fdls_fdmi_timer_callback(struct timer_list *t) +{ + struct fnic_fdls_fabric_s *fabric = from_timer(fabric, t, fdmi_timer); + struct fnic_iport_s *iport = + container_of(fabric, struct fnic_iport_s, fabric); + struct fnic *fnic = iport->fnic; + unsigned long flags; + + spin_lock_irqsave(&fnic->fnic_lock, flags); + + if (!iport->fabric.fdmi_pending) { + /* timer expired after fdmi responses received. */ + spin_unlock_irqrestore(&fnic->fnic_lock, flags); + return; + } + + /* if not abort pending, send an abort */ + if (!(iport->fabric.fdmi_pending & FDLS_FDMI_ABORT_PENDING)) { + fdls_send_fdmi_abts(iport); + spin_unlock_irqrestore(&fnic->fnic_lock, flags); + return; + } + + /* Abort timed out */ + fdls_schedule_fdmi_oxid_free(iport); + + iport->fabric.fdmi_pending = 0; + /* If max retries not exhaused, start over from fdmi plogi */ + if (iport->fabric.fdmi_retry < FDLS_FDMI_MAX_RETRY) { + iport->fabric.fdmi_retry++; + FNIC_FCS_DBG(KERN_INFO, fnic->lport->host, fnic->fnic_num, + "retry fdmi timer %d", iport->fabric.fdmi_retry); + fdls_send_fdmi_plogi(iport); + } + spin_unlock_irqrestore(&fnic->fnic_lock, flags); +} + static void fdls_send_delete_tport_msg(struct fnic_tport_s *tport) { struct fnic_iport_s *iport = (struct fnic_iport_s *) tport->iport; @@ -1697,6 +2040,15 @@ static void fnic_fdls_start_plogi(struct fnic_iport_s *iport) fdls_send_fabric_plogi(iport); fdls_set_state((&iport->fabric), FDLS_STATE_FABRIC_PLOGI); iport->fabric.flags &= ~FNIC_FDLS_FABRIC_ABORT_ISSUED; + + if ((fnic_fdmi_support == 1) && (!(iport->flags & FNIC_FDMI_ACTIVE))) { + /* we can do FDMI at the same time */ + iport->fabric.fdmi_retry = 0; + timer_setup(&iport->fabric.fdmi_timer, fdls_fdmi_timer_callback, + 0); + fdls_send_fdmi_plogi(iport); + iport->flags |= FNIC_FDMI_ACTIVE; + } } static void @@ -2784,6 +3136,109 @@ fdls_process_fabric_plogi_rsp(struct fnic_iport_s *iport, } } +static void fdls_process_fdmi_plogi_rsp(struct fnic_iport_s *iport, + struct fc_frame_header *fchdr) +{ + struct fc_std_flogi *plogi_rsp = (struct fc_std_flogi *)fchdr; + struct fc_std_els_rsp *els_rjt = (struct fc_std_els_rsp *)fchdr; + struct fnic *fnic = iport->fnic; + u64 fdmi_tov; + + iport->fabric.fdmi_pending &= ~FDLS_FDMI_PLOGI_PENDING; + fdls_free_fabric_oxid(iport, &iport->fabric_oxid_pool, + ntohs(FNIC_STD_GET_OX_ID(fchdr))); + + if (ntoh24(fchdr->fh_s_id) == 0XFFFFFA) { + del_timer_sync(&iport->fabric.fdmi_timer); + iport->fabric.fdmi_pending = 0; + switch (plogi_rsp->els.fl_cmd) { + case ELS_LS_ACC: + FNIC_FCS_DBG(KERN_INFO, fnic->lport->host, fnic->fnic_num, + "FDLS process fdmi PLOGI response status: ELS_LS_ACC\n"); + FNIC_FCS_DBG(KERN_INFO, fnic->lport->host, fnic->fnic_num, + "Sending fdmi registration for port 0x%x\n", + iport->fcid); + + fdls_fdmi_register_hba(iport); + fdls_fdmi_register_pa(iport); + fdmi_tov = jiffies + msecs_to_jiffies(5000); + mod_timer(&iport->fabric.fdmi_timer, + round_jiffies(fdmi_tov)); + break; + case ELS_LS_RJT: + FNIC_FCS_DBG(KERN_INFO, fnic->lport->host, fnic->fnic_num, + "Fabric FDMI PLOGI returned ELS_LS_RJT reason: 0x%x", + els_rjt->u.rej.er_reason); + + if (((els_rjt->u.rej.er_reason == ELS_RJT_BUSY) + || (els_rjt->u.rej.er_reason == ELS_RJT_UNAB)) + && (iport->fabric.fdmi_retry < 7)) { + iport->fabric.fdmi_retry++; + fdls_send_fdmi_plogi(iport); + } + break; + default: + break; + } + } +} + +static void fdls_process_fdmi_reg_ack(struct fnic_iport_s *iport, + struct fc_frame_header *fchdr, + int rsp_type) +{ + struct fnic *fnic = iport->fnic; + + if (!iport->fabric.fdmi_pending) { + FNIC_FCS_DBG(KERN_ERR, fnic->lport->host, fnic->fnic_num, + "Received FDMI ack while not waiting:%x\n", + ntohs(FNIC_STD_GET_OX_ID(fchdr))); + return; + } + + if (rsp_type == FNIC_FDMI_REG_HBA_RSP) + iport->fabric.fdmi_pending &= ~FDLS_FDMI_REG_HBA_PENDING; + else + iport->fabric.fdmi_pending &= ~FDLS_FDMI_RPA_PENDING; + + fdls_free_fabric_oxid(iport, &iport->fdmi_oxid_pool, + ntohs(FNIC_STD_GET_OX_ID(fchdr))); + + FNIC_FCS_DBG(KERN_INFO, fnic->lport->host, fnic->fnic_num, + "iport fcid: 0x%x: Received FDMI registration ack\n", + iport->fcid); + + if (!iport->fabric.fdmi_pending) { + del_timer_sync(&iport->fabric.fdmi_timer); + FNIC_FCS_DBG(KERN_INFO, fnic->lport->host, fnic->fnic_num, + "iport fcid: 0x%x: Canceling FDMI timer\n", + iport->fcid); + } +} + +static void fdls_process_fdmi_abts_rsp(struct fnic_iport_s *iport, + struct fc_frame_header *fchdr) +{ + uint32_t s_id; + struct fnic *fnic = iport->fnic; + + s_id = ntoh24(FNIC_STD_GET_S_ID(fchdr)); + + if (!(s_id != 0xFFFFFA)) { + FNIC_FCS_DBG(KERN_INFO, fnic->lport->host, fnic->fnic_num, + "Received abts rsp with invalid SID: 0x%x. Dropping frame", + s_id); + return; + } + + del_timer_sync(&iport->fabric.fdmi_timer); + iport->fabric.fdmi_pending &= ~FDLS_FDMI_ABORT_PENDING; + + fdls_free_fabric_oxid(iport, &iport->fdmi_oxid_pool, + ntohs(FNIC_STD_GET_OX_ID(fchdr))); + fdls_send_fdmi_plogi(iport); +} + static void fdls_process_fabric_abts_rsp(struct fnic_iport_s *iport, struct fc_frame_header *fchdr) @@ -3780,6 +4235,9 @@ fnic_fdls_validate_and_get_frame_type(struct fnic_iport_s *iport, break; case FNIC_FABRIC_LOGO_RSP: + case FNIC_FDMI_PLOGI_RSP: + case FNIC_FDMI_REG_HBA_RSP: + case FNIC_FDMI_RPA_RSP: break; default: /* Drop the Rx frame and log/stats it */ @@ -3822,6 +4280,9 @@ void fnic_fdls_recv_frame(struct fnic_iport_s *iport, void *rx_frame, case FNIC_FABRIC_PLOGI_RSP: fdls_process_fabric_plogi_rsp(iport, fchdr); break; + case FNIC_FDMI_PLOGI_RSP: + fdls_process_fdmi_plogi_rsp(iport, fchdr); + break; case FNIC_FABRIC_RPN_RSP: fdls_process_rpn_id_rsp(iport, fchdr); break; @@ -3861,6 +4322,9 @@ void fnic_fdls_recv_frame(struct fnic_iport_s *iport, void *rx_frame, if (fdls_is_oxid_in_fabric_range(oxid) && (iport->fabric.flags & FNIC_FDLS_FABRIC_ABORT_ISSUED)) { fdls_process_fabric_abts_rsp(iport, fchdr); + } else if (fdls_is_oxid_in_fdmi_range(oxid) && + iport->fabric.fdmi_pending) { + fdls_process_fdmi_abts_rsp(iport, fchdr); } else { fdls_process_tgt_abts_rsp(iport, fchdr); } @@ -3890,6 +4354,10 @@ void fnic_fdls_recv_frame(struct fnic_iport_s *iport, void *rx_frame, case FNIC_ELS_RLS: fdls_process_rls_req(iport, fchdr); break; + case FNIC_FDMI_REG_HBA_RSP: + case FNIC_FDMI_RPA_RSP: + fdls_process_fdmi_reg_ack(iport, fchdr, frame_type); + break; default: FNIC_FCS_DBG(KERN_INFO, fnic->lport->host, fnic->fnic_num, "s_id: 0x%x d_did: 0x%x", s_id, d_id); diff --git a/drivers/scsi/fnic/fnic.h b/drivers/scsi/fnic/fnic.h index 92cd17efa40f..5d8315b24085 100644 --- a/drivers/scsi/fnic/fnic.h +++ b/drivers/scsi/fnic/fnic.h @@ -82,6 +82,72 @@ /* Retry supported by rport (returned by PRLI service parameters) */ #define FNIC_FC_RP_FLAGS_RETRY 0x1 +/* Cisco vendor id */ +#define PCI_VENDOR_ID_CISCO 0x1137 +#define PCI_DEVICE_ID_CISCO_VIC_FC 0x0045 /* fc vnic */ + +/* sereno pcie switch */ +#define PCI_DEVICE_ID_CISCO_SERENO 0x004e +#define PCI_DEVICE_ID_CISCO_CRUZ 0x007a /* Cruz */ +#define PCI_DEVICE_ID_CISCO_BODEGA 0x0131 /* Bodega */ +#define PCI_DEVICE_ID_CISCO_BEVERLY 0x025f /* Beverly */ + +/* Sereno */ +#define PCI_SUBDEVICE_ID_CISCO_VASONA 0x004f /* vasona mezz */ +#define PCI_SUBDEVICE_ID_CISCO_COTATI 0x0084 /* cotati mlom */ +#define PCI_SUBDEVICE_ID_CISCO_LEXINGTON 0x0085 /* lexington pcie */ +#define PCI_SUBDEVICE_ID_CISCO_ICEHOUSE 0x00cd /* Icehouse */ +#define PCI_SUBDEVICE_ID_CISCO_KIRKWOODLAKE 0x00ce /* KirkwoodLake pcie */ +#define PCI_SUBDEVICE_ID_CISCO_SUSANVILLE 0x012e /* Susanville MLOM */ +#define PCI_SUBDEVICE_ID_CISCO_TORRANCE 0x0139 /* Torrance MLOM */ + +/* Cruz */ +#define PCI_SUBDEVICE_ID_CISCO_CALISTOGA 0x012c /* Calistoga MLOM */ +#define PCI_SUBDEVICE_ID_CISCO_MOUNTAINVIEW 0x0137 /* Cruz Mezz */ +/* Cruz MountTian SIOC */ +#define PCI_SUBDEVICE_ID_CISCO_MOUNTTIAN 0x014b +#define PCI_SUBDEVICE_ID_CISCO_CLEARLAKE 0x014d /* ClearLake pcie */ +/* Cruz MountTian2 SIOC */ +#define PCI_SUBDEVICE_ID_CISCO_MOUNTTIAN2 0x0157 +#define PCI_SUBDEVICE_ID_CISCO_CLAREMONT 0x015d /* Claremont MLOM */ + +/* Bodega */ +/* VIC 1457 PCIe mLOM */ +#define PCI_SUBDEVICE_ID_CISCO_BRADBURY 0x0218 +#define PCI_SUBDEVICE_ID_CISCO_BRENTWOOD 0x0217 /* VIC 1455 PCIe */ +/* VIC 1487 PCIe mLOM */ +#define PCI_SUBDEVICE_ID_CISCO_BURLINGAME 0x021a +#define PCI_SUBDEVICE_ID_CISCO_BAYSIDE 0x0219 /* VIC 1485 PCIe */ +/* VIC 1440 Mezz mLOM */ +#define PCI_SUBDEVICE_ID_CISCO_BAKERSFIELD 0x0215 +#define PCI_SUBDEVICE_ID_CISCO_BOONVILLE 0x0216 /* VIC 1480 Mezz */ +#define PCI_SUBDEVICE_ID_CISCO_BENICIA 0x024a /* VIC 1495 */ +#define PCI_SUBDEVICE_ID_CISCO_BEAUMONT 0x024b /* VIC 1497 */ +#define PCI_SUBDEVICE_ID_CISCO_BRISBANE 0x02af /* VIC 1467 */ +#define PCI_SUBDEVICE_ID_CISCO_BENTON 0x02b0 /* VIC 1477 */ +#define PCI_SUBDEVICE_ID_CISCO_TWIN_RIVER 0x02cf /* VIC 14425 */ +#define PCI_SUBDEVICE_ID_CISCO_TWIN_PEAK 0x02d0 /* VIC 14825 */ + +/* Beverly */ +#define PCI_SUBDEVICE_ID_CISCO_BERN 0x02de /* VIC 15420 */ +#define PCI_SUBDEVICE_ID_CISCO_STOCKHOLM 0x02dd /* VIC 15428 */ +#define PCI_SUBDEVICE_ID_CISCO_KRAKOW 0x02dc /* VIC 15411 */ +#define PCI_SUBDEVICE_ID_CISCO_LUCERNE 0x02db /* VIC 15231 */ +#define PCI_SUBDEVICE_ID_CISCO_TURKU 0x02e8 /* VIC 15238 */ +#define PCI_SUBDEVICE_ID_CISCO_TURKU_PLUS 0x02f3 /* VIC 15237 */ +#define PCI_SUBDEVICE_ID_CISCO_ZURICH 0x02df /* VIC 15230 */ +#define PCI_SUBDEVICE_ID_CISCO_RIGA 0x02e0 /* VIC 15427 */ +#define PCI_SUBDEVICE_ID_CISCO_GENEVA 0x02e1 /* VIC 15422 */ +#define PCI_SUBDEVICE_ID_CISCO_HELSINKI 0x02e4 /* VIC 15235 */ +#define PCI_SUBDEVICE_ID_CISCO_GOTHENBURG 0x02f2 /* VIC 15425 */ + +struct fnic_pcie_device { + u32 device; + u8 *desc; + u32 subsystem_device; + u8 *subsys_desc; +}; + /* * fnic private data per SCSI command. * These fields are locked by the hashed io_req_lock. @@ -134,6 +200,7 @@ static inline u64 fnic_flags_and_state(struct scsi_cmnd *cmd) #define fnic_clear_state_flags(fnicp, st_flags) \ __fnic_set_state_flags(fnicp, st_flags, 1) +extern unsigned int fnic_fdmi_support; extern unsigned int fnic_log_level; extern unsigned int io_completions; extern struct workqueue_struct *fnic_event_queue; @@ -336,6 +403,9 @@ struct fnic { struct work_struct tport_work; struct list_head tport_event_list; + char subsys_desc[14]; + int subsys_desc_len; + /*** FIP related data members -- start ***/ void (*set_vlan)(struct fnic *, u16 vlan); struct work_struct fip_frame_work; @@ -433,5 +503,7 @@ fnic_chk_state_flags_locked(struct fnic *fnic, unsigned long st_flags) void __fnic_set_state_flags(struct fnic *, unsigned long, unsigned long); void fnic_dump_fchost_stats(struct Scsi_Host *, struct fc_host_statistics *); void fnic_free_txq(struct list_head *head); +int fnic_get_desc_by_devid(struct pci_dev *pdev, char **desc, + char **subsys_desc); #endif /* _FNIC_H_ */ diff --git a/drivers/scsi/fnic/fnic_main.c b/drivers/scsi/fnic/fnic_main.c index 16c9f87c932b..c8d2fcf5d948 100644 --- a/drivers/scsi/fnic/fnic_main.c +++ b/drivers/scsi/fnic/fnic_main.c @@ -62,6 +62,9 @@ unsigned int fnic_log_level; module_param(fnic_log_level, int, S_IRUGO|S_IWUSR); MODULE_PARM_DESC(fnic_log_level, "bit mask of fnic logging levels"); +unsigned int fnic_fdmi_support = 1; +module_param(fnic_fdmi_support, int, 0644); +MODULE_PARM_DESC(fnic_fdmi_support, "FDMI support"); unsigned int io_completions = FNIC_DFLT_IO_COMPLETIONS; module_param(io_completions, int, S_IRUGO|S_IWUSR); @@ -607,6 +610,8 @@ static int fnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent) int i; unsigned long flags; int hwq; + char *desc, *subsys_desc; + int len; /* * Allocate SCSI Host and set up association between host, @@ -640,6 +645,23 @@ static int fnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent) fnic->fnic_num = fnic_id; fnic_stats_debugfs_init(fnic); + /* Find model name from PCIe subsys ID */ + if (fnic_get_desc_by_devid(pdev, &desc, &subsys_desc) == 0) { + dev_info(&fnic->pdev->dev, "Model: %s\n", subsys_desc); + + /* Update FDMI model */ + fnic->subsys_desc_len = strlen(subsys_desc); + len = ARRAY_SIZE(fnic->subsys_desc); + if (fnic->subsys_desc_len > len) + fnic->subsys_desc_len = len; + memcpy(fnic->subsys_desc, subsys_desc, fnic->subsys_desc_len); + dev_info(&fnic->pdev->dev, "FDMI Model: %s\n", fnic->subsys_desc); + } else { + fnic->subsys_desc_len = 0; + dev_info(&fnic->pdev->dev, "Model: %s subsys_id: 0x%04x\n", "Unknown", + pdev->subsystem_device); + } + err = pci_enable_device(pdev); if (err) { dev_err(&fnic->pdev->dev, "Cannot enable PCI device, aborting.\n"); @@ -1014,6 +1036,9 @@ static void fnic_remove(struct pci_dev *pdev) fnic_fcoe_evlist_free(fnic); } + if ((fnic_fdmi_support == 1) && (fnic->iport.fabric.fdmi_pending > 0)) + del_timer_sync(&fnic->iport.fabric.fdmi_timer); + /* * Log off the fabric. This stops all remote ports, dns port, * logs off the fabric. This flushes all rport, disc, lport work diff --git a/drivers/scsi/fnic/fnic_pci_subsys_devid.c b/drivers/scsi/fnic/fnic_pci_subsys_devid.c new file mode 100644 index 000000000000..36a2c1268422 --- /dev/null +++ b/drivers/scsi/fnic/fnic_pci_subsys_devid.c @@ -0,0 +1,131 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright 2008 Cisco Systems, Inc. All rights reserved. + * Copyright 2007 Nuova Systems, Inc. All rights reserved. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "fnic.h" + +static struct fnic_pcie_device fnic_pcie_device_table[] = { + {PCI_DEVICE_ID_CISCO_SERENO, "Sereno", PCI_SUBDEVICE_ID_CISCO_VASONA, + "VIC 1280"}, + {PCI_DEVICE_ID_CISCO_SERENO, "Sereno", PCI_SUBDEVICE_ID_CISCO_COTATI, + "VIC 1240"}, + {PCI_DEVICE_ID_CISCO_SERENO, "Sereno", + PCI_SUBDEVICE_ID_CISCO_LEXINGTON, "VIC 1225"}, + {PCI_DEVICE_ID_CISCO_SERENO, "Sereno", PCI_SUBDEVICE_ID_CISCO_ICEHOUSE, + "VIC 1285"}, + {PCI_DEVICE_ID_CISCO_SERENO, "Sereno", + PCI_SUBDEVICE_ID_CISCO_KIRKWOODLAKE, "VIC 1225T"}, + {PCI_DEVICE_ID_CISCO_SERENO, "Sereno", + PCI_SUBDEVICE_ID_CISCO_SUSANVILLE, "VIC 1227"}, + {PCI_DEVICE_ID_CISCO_SERENO, "Sereno", PCI_SUBDEVICE_ID_CISCO_TORRANCE, + "VIC 1227T"}, + + {PCI_DEVICE_ID_CISCO_CRUZ, "Cruz", PCI_SUBDEVICE_ID_CISCO_CALISTOGA, + "VIC 1340"}, + {PCI_DEVICE_ID_CISCO_CRUZ, "Cruz", PCI_SUBDEVICE_ID_CISCO_MOUNTAINVIEW, + "VIC 1380"}, + {PCI_DEVICE_ID_CISCO_CRUZ, "Cruz", PCI_SUBDEVICE_ID_CISCO_MOUNTTIAN, + "C3260-SIOC"}, + {PCI_DEVICE_ID_CISCO_CRUZ, "Cruz", PCI_SUBDEVICE_ID_CISCO_CLEARLAKE, + "VIC 1385"}, + {PCI_DEVICE_ID_CISCO_CRUZ, "Cruz", PCI_SUBDEVICE_ID_CISCO_MOUNTTIAN2, + "C3260-SIOC"}, + {PCI_DEVICE_ID_CISCO_CRUZ, "Cruz", PCI_SUBDEVICE_ID_CISCO_CLAREMONT, + "VIC 1387"}, + + {PCI_DEVICE_ID_CISCO_BODEGA, "Bodega", PCI_SUBDEVICE_ID_CISCO_BRADBURY, + "VIC 1457"}, + {PCI_DEVICE_ID_CISCO_BODEGA, "Bodega", + PCI_SUBDEVICE_ID_CISCO_BRENTWOOD, "VIC 1455"}, + {PCI_DEVICE_ID_CISCO_BODEGA, "Bodega", + PCI_SUBDEVICE_ID_CISCO_BURLINGAME, "VIC 1487"}, + {PCI_DEVICE_ID_CISCO_BODEGA, "Bodega", PCI_SUBDEVICE_ID_CISCO_BAYSIDE, + "VIC 1485"}, + {PCI_DEVICE_ID_CISCO_BODEGA, "Bodega", + PCI_SUBDEVICE_ID_CISCO_BAKERSFIELD, "VIC 1440"}, + {PCI_DEVICE_ID_CISCO_BODEGA, "Bodega", + PCI_SUBDEVICE_ID_CISCO_BOONVILLE, "VIC 1480"}, + {PCI_DEVICE_ID_CISCO_BODEGA, "Bodega", PCI_SUBDEVICE_ID_CISCO_BENICIA, + "VIC 1495"}, + {PCI_DEVICE_ID_CISCO_BODEGA, "Bodega", PCI_SUBDEVICE_ID_CISCO_BEAUMONT, + "VIC 1497"}, + {PCI_DEVICE_ID_CISCO_BODEGA, "Bodega", PCI_SUBDEVICE_ID_CISCO_BRISBANE, + "VIC 1467"}, + {PCI_DEVICE_ID_CISCO_BODEGA, "Bodega", PCI_SUBDEVICE_ID_CISCO_BENTON, + "VIC 1477"}, + {PCI_DEVICE_ID_CISCO_BODEGA, "Bodega", + PCI_SUBDEVICE_ID_CISCO_TWIN_RIVER, "VIC 14425"}, + {PCI_DEVICE_ID_CISCO_BODEGA, "Bodega", + PCI_SUBDEVICE_ID_CISCO_TWIN_PEAK, "VIC 14825"}, + + {PCI_DEVICE_ID_CISCO_BEVERLY, "Beverly", PCI_SUBDEVICE_ID_CISCO_BERN, + "VIC 15420"}, + {PCI_DEVICE_ID_CISCO_BEVERLY, "Beverly", + PCI_SUBDEVICE_ID_CISCO_STOCKHOLM, "VIC 15428"}, + {PCI_DEVICE_ID_CISCO_BEVERLY, "Beverly", PCI_SUBDEVICE_ID_CISCO_KRAKOW, + "VIC 15411"}, + {PCI_DEVICE_ID_CISCO_BEVERLY, "Beverly", + PCI_SUBDEVICE_ID_CISCO_LUCERNE, "VIC 15231"}, + {PCI_DEVICE_ID_CISCO_BEVERLY, "Beverly", PCI_SUBDEVICE_ID_CISCO_TURKU, + "VIC 15238"}, + {PCI_DEVICE_ID_CISCO_BEVERLY, "Beverly", PCI_SUBDEVICE_ID_CISCO_GENEVA, + "VIC 15422"}, + {PCI_DEVICE_ID_CISCO_BEVERLY, "Beverly", + PCI_SUBDEVICE_ID_CISCO_HELSINKI, "VIC 15235"}, + {PCI_DEVICE_ID_CISCO_BEVERLY, "Beverly", + PCI_SUBDEVICE_ID_CISCO_GOTHENBURG, "VIC 15425"}, + {PCI_DEVICE_ID_CISCO_BEVERLY, "Beverly", + PCI_SUBDEVICE_ID_CISCO_TURKU_PLUS, "VIC 15237"}, + {PCI_DEVICE_ID_CISCO_BEVERLY, "Beverly", PCI_SUBDEVICE_ID_CISCO_ZURICH, + "VIC 15230"}, + {PCI_DEVICE_ID_CISCO_BEVERLY, "Beverly", PCI_SUBDEVICE_ID_CISCO_RIGA, + "VIC 15427"}, + + {0,} +}; + +int fnic_get_desc_by_devid(struct pci_dev *pdev, char **desc, + char **subsys_desc) +{ + unsigned short device = PCI_DEVICE_ID_CISCO_VIC_FC; + int max = ARRAY_SIZE(fnic_pcie_device_table); + struct fnic_pcie_device *t = fnic_pcie_device_table; + int index = 0; + + if (pdev->device != device) + return 1; + + while (t->device != 0) { + if (memcmp + ((char *) &pdev->subsystem_device, + (char *) &t->subsystem_device, sizeof(short)) == 0) + break; + t++; + index++; + } + + if (index >= max - 1) { + *desc = NULL; + *subsys_desc = NULL; + return 1; + } + + *desc = fnic_pcie_device_table[index].desc; + *subsys_desc = fnic_pcie_device_table[index].subsys_desc; + return 0; +}