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Message-ID: <20241206210852.3251-6-kartilak@cisco.com>
Date: Fri, 6 Dec 2024 13:08:42 -0800
From: Karan Tilak Kumar <kartilak@...co.com>
To: sebaddel@...co.com
Cc: arulponn@...co.com,
djhawar@...co.com,
gcboffa@...co.com,
mkai2@...co.com,
satishkh@...co.com,
aeasi@...co.com,
jejb@...ux.ibm.com,
martin.petersen@...cle.com,
linux-scsi@...r.kernel.org,
linux-kernel@...r.kernel.org,
Karan Tilak Kumar <kartilak@...co.com>,
kernel test robot <lkp@...el.com>
Subject: [PATCH v6 05/15] scsi: fnic: Add support for unsolicited requests and responses
Add support for unsolicited requests and responses.
Add support to accept and reject frames.
Reported-by: kernel test robot <lkp@...el.com>
Closes:
https://lore.kernel.org/oe-kbuild-all/202409291705.MugERX98-lkp@
intel.com/
Reviewed-by: Sesidhar Baddela <sebaddel@...co.com>
Co-developed-by: Gian Carlo Boffa <gcboffa@...co.com>
Signed-off-by: Gian Carlo Boffa <gcboffa@...co.com>
Co-developed-by: Arulprabhu Ponnusamy <arulponn@...co.com>
Signed-off-by: Arulprabhu Ponnusamy <arulponn@...co.com>
Co-developed-by: Arun Easi <aeasi@...co.com>
Signed-off-by: Arun Easi <aeasi@...co.com>
Co-developed-by: Karan Tilak Kumar <kartilak@...co.com>
Signed-off-by: Karan Tilak Kumar <kartilak@...co.com>
---
Changes between v5 and v6:
Incorporate review comments from Martin:
Remove GCC 13.3 warnings.
Incorporate review comments from Hannes:
Allocate OXID from a pool.
Modify frame initialization.
Changes between v4 and v5:
Incorporate review comments from Martin:
Remove unnecessary fdls_get_tgt_oxid_pool call.
Modify attribution appropriately.
Changes between v3 and v4:
Fix kernel test robot warnings.
Changes between v2 and v3:
Add fnic_std_ba_acc removed from previous patch.
Incorporate review comments from Hannes:
Replace redundant definitions with standard definitions.
Changes between v1 and v2:
Incorporate review comments from Hannes:
Replace fnic_del_tport_timer_sync macro calls with function
calls.
Fix indentation.
Replace definitions with standard definitions from fc_els.h.
---
drivers/scsi/fnic/fdls_disc.c | 683 ++++++++++++++++++++++++++++++++++
1 file changed, 683 insertions(+)
diff --git a/drivers/scsi/fnic/fdls_disc.c b/drivers/scsi/fnic/fdls_disc.c
index d440934f365c..b99b1387580a 100644
--- a/drivers/scsi/fnic/fdls_disc.c
+++ b/drivers/scsi/fnic/fdls_disc.c
@@ -42,6 +42,8 @@ static void fdls_tport_timer_callback(struct timer_list *t);
static void fdls_start_fabric_timer(struct fnic_iport_s *iport,
int timeout);
static void fdls_init_plogi_frame(uint8_t *frame, struct fnic_iport_s *iport);
+static void fdls_init_els_acc_frame(uint8_t *frame, struct fnic_iport_s *iport);
+static void fdls_init_els_rjt_frame(uint8_t *frame, struct fnic_iport_s *iport);
static void fdls_init_logo_frame(uint8_t *frame, struct fnic_iport_s *iport);
static void fdls_init_fabric_abts_frame(uint8_t *frame,
struct fnic_iport_s *iport);
@@ -447,6 +449,39 @@ void fdls_init_plogi_frame(uint8_t *frame,
FNIC_STD_SET_S_ID(pplogi->fchdr, s_id);
}
+static void fdls_init_els_acc_frame(uint8_t *frame,
+ struct fnic_iport_s *iport)
+{
+ struct fc_std_els_acc_rsp *pels_acc;
+ uint8_t s_id[3];
+
+ pels_acc = (struct fc_std_els_acc_rsp *) (frame + FNIC_ETH_FCOE_HDRS_OFFSET);
+ *pels_acc = (struct fc_std_els_acc_rsp) {
+ .fchdr = {.fh_r_ctl = FC_RCTL_ELS_REP,
+ .fh_type = FC_TYPE_ELS, .fh_f_ctl = {FNIC_ELS_REP_FCTL, 0, 0}},
+ .acc.la_cmd = ELS_LS_ACC,
+ };
+
+ hton24(s_id, iport->fcid);
+ FNIC_STD_SET_S_ID(pels_acc->fchdr, s_id);
+ FNIC_STD_SET_RX_ID(pels_acc->fchdr, FNIC_UNASSIGNED_RXID);
+}
+
+static void fdls_init_els_rjt_frame(uint8_t *frame,
+ struct fnic_iport_s *iport)
+{
+ struct fc_std_els_rjt_rsp *pels_rjt;
+
+ pels_rjt = (struct fc_std_els_rjt_rsp *) (frame + FNIC_ETH_FCOE_HDRS_OFFSET);
+ *pels_rjt = (struct fc_std_els_rjt_rsp) {
+ .fchdr = {.fh_r_ctl = FC_RCTL_ELS_REP, .fh_type = FC_TYPE_ELS,
+ .fh_f_ctl = {FNIC_ELS_REP_FCTL, 0, 0}},
+ .rej.er_cmd = ELS_LS_RJT,
+ };
+
+ FNIC_STD_SET_RX_ID(pels_rjt->fchdr, FNIC_UNASSIGNED_RXID);
+}
+
static void fdls_init_logo_frame(uint8_t *frame,
struct fnic_iport_s *iport)
{
@@ -484,6 +519,73 @@ static void fdls_init_fabric_abts_frame(uint8_t *frame,
.fh_parm_offset = 0x00000000, /* bit:0 = 0 Abort a exchange */
};
}
+
+static void
+fdls_send_rscn_resp(struct fnic_iport_s *iport,
+ struct fc_frame_header *rscn_fchdr)
+{
+ uint8_t *frame;
+ struct fc_std_els_acc_rsp *pels_acc;
+ struct fnic *fnic = iport->fnic;
+ uint16_t oxid;
+ uint16_t frame_size = FNIC_ETH_FCOE_HDRS_OFFSET +
+ sizeof(struct fc_std_els_acc_rsp);
+
+ frame = fdls_alloc_frame(iport);
+ if (frame == NULL) {
+ FNIC_FCS_DBG(KERN_ERR, fnic->lport->host, fnic->fnic_num,
+ "Failed to allocate frame to send RSCN response");
+ return;
+ }
+
+ pels_acc = (struct fc_std_els_acc_rsp *) (frame + FNIC_ETH_FCOE_HDRS_OFFSET);
+ fdls_init_els_acc_frame(frame, iport);
+
+ FNIC_STD_SET_D_ID(pels_acc->fchdr, rscn_fchdr->fh_s_id);
+
+ oxid = FNIC_STD_GET_OX_ID(rscn_fchdr);
+ FNIC_STD_SET_OX_ID(pels_acc->fchdr, oxid);
+
+ FNIC_FCS_DBG(KERN_INFO, fnic->lport->host, fnic->fnic_num,
+ "0x%x: FDLS send RSCN response with oxid: 0x%x",
+ iport->fcid, oxid);
+
+ fnic_send_fcoe_frame(iport, frame, frame_size);
+}
+
+static void
+fdls_send_logo_resp(struct fnic_iport_s *iport,
+ struct fc_frame_header *req_fchdr)
+{
+ uint8_t *frame;
+ struct fc_std_els_acc_rsp *plogo_resp;
+ struct fnic *fnic = iport->fnic;
+ uint16_t oxid;
+ uint16_t frame_size = FNIC_ETH_FCOE_HDRS_OFFSET +
+ sizeof(struct fc_std_els_acc_rsp);
+
+ frame = fdls_alloc_frame(iport);
+ if (frame == NULL) {
+ FNIC_FCS_DBG(KERN_ERR, fnic->lport->host, fnic->fnic_num,
+ "Failed to allocate frame to send LOGO response");
+ return;
+ }
+
+ plogo_resp = (struct fc_std_els_acc_rsp *) (frame + FNIC_ETH_FCOE_HDRS_OFFSET);
+ fdls_init_els_acc_frame(frame, iport);
+
+ FNIC_STD_SET_D_ID(plogo_resp->fchdr, req_fchdr->fh_s_id);
+
+ oxid = FNIC_STD_GET_OX_ID(req_fchdr);
+ FNIC_STD_SET_OX_ID(plogo_resp->fchdr, oxid);
+
+ FNIC_FCS_DBG(KERN_INFO, fnic->lport->host, fnic->fnic_num,
+ "0x%x: FDLS send LOGO response with oxid: 0x%x",
+ iport->fcid, oxid);
+
+ fnic_send_fcoe_frame(iport, frame, frame_size);
+}
+
void
fdls_send_tport_abts(struct fnic_iport_s *iport,
struct fnic_tport_s *tport)
@@ -3118,6 +3220,232 @@ fdls_process_fabric_abts_rsp(struct fnic_iport_s *iport,
}
}
+static void
+fdls_process_abts_req(struct fnic_iport_s *iport, struct fc_frame_header *fchdr)
+{
+ uint8_t *frame;
+ struct fc_std_abts_ba_acc *pba_acc;
+ uint32_t nport_id;
+ uint16_t oxid;
+ struct fnic_tport_s *tport;
+ struct fnic *fnic = iport->fnic;
+ uint16_t frame_size = FNIC_ETH_FCOE_HDRS_OFFSET +
+ sizeof(struct fc_std_abts_ba_acc);
+
+ nport_id = ntoh24(fchdr->fh_s_id);
+ FNIC_FCS_DBG(KERN_INFO, fnic->lport->host, fnic->fnic_num,
+ "Received abort from SID 0x%8x", nport_id);
+
+ tport = fnic_find_tport_by_fcid(iport, nport_id);
+ if (tport) {
+ oxid = FNIC_STD_GET_OX_ID(fchdr);
+ if (tport->active_oxid == oxid) {
+ tport->flags |= FNIC_FDLS_TGT_ABORT_ISSUED;
+ fdls_free_oxid(iport, oxid, &tport->active_oxid);
+ }
+ }
+
+ frame = fdls_alloc_frame(iport);
+ if (frame == NULL) {
+ FNIC_FCS_DBG(KERN_ERR, fnic->lport->host, fnic->fnic_num,
+ "0x%x: Failed to allocate frame to send response for ABTS req",
+ iport->fcid);
+ return;
+ }
+
+ pba_acc = (struct fc_std_abts_ba_acc *) (frame + FNIC_ETH_FCOE_HDRS_OFFSET);
+ *pba_acc = (struct fc_std_abts_ba_acc) {
+ .fchdr = {.fh_r_ctl = FC_RCTL_BA_ACC,
+ .fh_f_ctl = {FNIC_FCP_RSP_FCTL, 0, 0}},
+ .acc = {.ba_low_seq_cnt = 0, .ba_high_seq_cnt = cpu_to_be16(0xFFFF)}
+ };
+
+ FNIC_STD_SET_S_ID(pba_acc->fchdr, fchdr->fh_d_id);
+ FNIC_STD_SET_D_ID(pba_acc->fchdr, fchdr->fh_s_id);
+ FNIC_STD_SET_OX_ID(pba_acc->fchdr, FNIC_STD_GET_OX_ID(fchdr));
+ FNIC_STD_SET_RX_ID(pba_acc->fchdr, FNIC_STD_GET_RX_ID(fchdr));
+
+ pba_acc->acc.ba_rx_id = cpu_to_be16(FNIC_STD_GET_RX_ID(fchdr));
+ pba_acc->acc.ba_ox_id = cpu_to_be16(FNIC_STD_GET_OX_ID(fchdr));
+
+ FNIC_FCS_DBG(KERN_INFO, fnic->lport->host, fnic->fnic_num,
+ "0x%x: FDLS send BA ACC with oxid: 0x%x",
+ iport->fcid, oxid);
+
+ fnic_send_fcoe_frame(iport, frame, frame_size);
+}
+
+static void
+fdls_process_unsupported_els_req(struct fnic_iport_s *iport,
+ struct fc_frame_header *fchdr)
+{
+ uint8_t *frame;
+ struct fc_std_els_rjt_rsp *pls_rsp;
+ uint16_t oxid;
+ uint32_t d_id = ntoh24(fchdr->fh_d_id);
+ struct fnic *fnic = iport->fnic;
+ uint16_t frame_size = FNIC_ETH_FCOE_HDRS_OFFSET +
+ sizeof(struct fc_std_els_rjt_rsp);
+
+ if (iport->fcid != d_id) {
+ FNIC_FCS_DBG(KERN_INFO, fnic->lport->host, fnic->fnic_num,
+ "Dropping unsupported ELS with illegal frame bits 0x%x\n",
+ d_id);
+ return;
+ }
+
+ if ((iport->state != FNIC_IPORT_STATE_READY)
+ && (iport->state != FNIC_IPORT_STATE_FABRIC_DISC)) {
+ FNIC_FCS_DBG(KERN_INFO, fnic->lport->host, fnic->fnic_num,
+ "Dropping unsupported ELS request in iport state: %d",
+ iport->state);
+ return;
+ }
+
+ frame = fdls_alloc_frame(iport);
+ if (frame == NULL) {
+ FNIC_FCS_DBG(KERN_ERR, fnic->lport->host, fnic->fnic_num,
+ "Failed to allocate frame to send response to unsupported ELS request");
+ return;
+ }
+
+ pls_rsp = (struct fc_std_els_rjt_rsp *) (frame + FNIC_ETH_FCOE_HDRS_OFFSET);
+ fdls_init_els_rjt_frame(frame, iport);
+
+ FNIC_FCS_DBG(KERN_INFO, fnic->lport->host, fnic->fnic_num,
+ "0x%x: Process unsupported ELS request from SID: 0x%x",
+ iport->fcid, ntoh24(fchdr->fh_s_id));
+
+ /* We don't support this ELS request, send a reject */
+ pls_rsp->rej.er_reason = 0x0B;
+ pls_rsp->rej.er_explan = 0x0;
+ pls_rsp->rej.er_vendor = 0x0;
+
+ FNIC_STD_SET_S_ID(pls_rsp->fchdr, fchdr->fh_d_id);
+ FNIC_STD_SET_D_ID(pls_rsp->fchdr, fchdr->fh_s_id);
+ oxid = FNIC_STD_GET_OX_ID(fchdr);
+ FNIC_STD_SET_OX_ID(pls_rsp->fchdr, oxid);
+
+ fnic_send_fcoe_frame(iport, frame, frame_size);
+}
+
+static void
+fdls_process_rls_req(struct fnic_iport_s *iport, struct fc_frame_header *fchdr)
+{
+ uint8_t *frame;
+ struct fc_std_rls_acc *prls_acc_rsp;
+ uint16_t oxid;
+ struct fnic *fnic = iport->fnic;
+ uint16_t frame_size = FNIC_ETH_FCOE_HDRS_OFFSET +
+ sizeof(struct fc_std_rls_acc);
+
+ FNIC_FCS_DBG(KERN_INFO, fnic->lport->host, fnic->fnic_num,
+ "Process RLS request %d", iport->fnic->fnic_num);
+
+ if ((iport->state != FNIC_IPORT_STATE_READY)
+ && (iport->state != FNIC_IPORT_STATE_FABRIC_DISC)) {
+ FNIC_FCS_DBG(KERN_INFO, fnic->lport->host, fnic->fnic_num,
+ "Received RLS req in iport state: %d. Dropping the frame.",
+ iport->state);
+ return;
+ }
+
+ frame = fdls_alloc_frame(iport);
+ if (frame == NULL) {
+ FNIC_FCS_DBG(KERN_ERR, fnic->lport->host, fnic->fnic_num,
+ "Failed to allocate frame to send RLS accept");
+ return;
+ }
+ prls_acc_rsp = (struct fc_std_rls_acc *) (frame + FNIC_ETH_FCOE_HDRS_OFFSET);
+
+ FNIC_STD_SET_S_ID(prls_acc_rsp->fchdr, fchdr->fh_d_id);
+ FNIC_STD_SET_D_ID(prls_acc_rsp->fchdr, fchdr->fh_s_id);
+
+ oxid = FNIC_STD_GET_OX_ID(fchdr);
+ FNIC_STD_SET_OX_ID(prls_acc_rsp->fchdr, oxid);
+ FNIC_STD_SET_RX_ID(prls_acc_rsp->fchdr, FNIC_UNASSIGNED_RXID);
+
+ FNIC_STD_SET_F_CTL(prls_acc_rsp->fchdr, FNIC_ELS_REP_FCTL << 16);
+ FNIC_STD_SET_R_CTL(prls_acc_rsp->fchdr, FC_RCTL_ELS_REP);
+ FNIC_STD_SET_TYPE(prls_acc_rsp->fchdr, FC_TYPE_ELS);
+
+ prls_acc_rsp->els.rls_cmd = ELS_LS_ACC;
+ prls_acc_rsp->els.rls_lesb.lesb_link_fail =
+ cpu_to_be32(iport->fnic->link_down_cnt);
+
+ fnic_send_fcoe_frame(iport, frame, frame_size);
+}
+
+static void
+fdls_process_els_req(struct fnic_iport_s *iport, struct fc_frame_header *fchdr,
+ uint32_t len)
+{
+ uint8_t *frame;
+ struct fc_std_els_acc_rsp *pels_acc;
+ uint16_t oxid;
+ uint8_t *fc_payload;
+ uint8_t type;
+ struct fnic *fnic = iport->fnic;
+ uint16_t frame_size = FNIC_ETH_FCOE_HDRS_OFFSET;
+
+ fc_payload = (uint8_t *) fchdr + sizeof(struct fc_frame_header);
+ type = *fc_payload;
+
+ if ((iport->state != FNIC_IPORT_STATE_READY)
+ && (iport->state != FNIC_IPORT_STATE_FABRIC_DISC)) {
+ FNIC_FCS_DBG(KERN_INFO, fnic->lport->host, fnic->fnic_num,
+ "Dropping ELS frame type: 0x%x in iport state: %d",
+ type, iport->state);
+ return;
+ }
+ switch (type) {
+ case ELS_ECHO:
+ FNIC_FCS_DBG(KERN_INFO, fnic->lport->host, fnic->fnic_num,
+ "sending LS_ACC for ECHO request %d\n",
+ iport->fnic->fnic_num);
+ break;
+
+ case ELS_RRQ:
+ FNIC_FCS_DBG(KERN_INFO, fnic->lport->host, fnic->fnic_num,
+ "sending LS_ACC for RRQ request %d\n",
+ iport->fnic->fnic_num);
+ break;
+
+ default:
+ FNIC_FCS_DBG(KERN_INFO, fnic->lport->host, fnic->fnic_num,
+ "sending LS_ACC for 0x%x ELS frame\n", type);
+ break;
+ }
+
+ frame = fdls_alloc_frame(iport);
+ if (frame == NULL) {
+ FNIC_FCS_DBG(KERN_ERR, fnic->lport->host, fnic->fnic_num,
+ "Failed to allocate frame to send ELS response for 0x%x",
+ type);
+ return;
+ }
+
+ if (type == ELS_ECHO) {
+ /* Brocade sends a longer payload, copy all frame back */
+ memcpy(frame, fchdr, len);
+ }
+
+ pels_acc = (struct fc_std_els_acc_rsp *) (frame + FNIC_ETH_FCOE_HDRS_OFFSET);
+ fdls_init_els_acc_frame(frame, iport);
+
+ FNIC_STD_SET_D_ID(pels_acc->fchdr, fchdr->fh_s_id);
+
+ oxid = FNIC_STD_GET_OX_ID(fchdr);
+ FNIC_STD_SET_OX_ID(pels_acc->fchdr, oxid);
+
+ if (type == ELS_ECHO)
+ frame_size += len;
+ else
+ frame_size += sizeof(struct fc_std_els_acc_rsp);
+
+ fnic_send_fcoe_frame(iport, frame, frame_size);
+}
+
static void
fdls_process_tgt_abts_rsp(struct fnic_iport_s *iport,
struct fc_frame_header *fchdr)
@@ -3254,6 +3582,336 @@ fdls_process_tgt_abts_rsp(struct fnic_iport_s *iport,
}
}
+
+static void
+fdls_process_plogi_req(struct fnic_iport_s *iport,
+ struct fc_frame_header *fchdr)
+{
+ uint8_t *frame;
+ struct fc_std_els_rjt_rsp *pplogi_rsp;
+ uint16_t oxid;
+ uint32_t d_id = ntoh24(fchdr->fh_d_id);
+ struct fnic *fnic = iport->fnic;
+ uint16_t frame_size = FNIC_ETH_FCOE_HDRS_OFFSET +
+ sizeof(struct fc_std_els_rjt_rsp);
+
+ if (iport->fcid != d_id) {
+ FNIC_FCS_DBG(KERN_INFO, fnic->lport->host, fnic->fnic_num,
+ "Received PLOGI with illegal frame bits. Dropping frame from 0x%x",
+ d_id);
+ return;
+ }
+
+ if (iport->state != FNIC_IPORT_STATE_READY) {
+ FNIC_FCS_DBG(KERN_INFO, fnic->lport->host, fnic->fnic_num,
+ "Received PLOGI request in iport state: %d Dropping frame",
+ iport->state);
+ return;
+ }
+
+ frame = fdls_alloc_frame(iport);
+ if (frame == NULL) {
+ FNIC_FCS_DBG(KERN_ERR, fnic->lport->host, fnic->fnic_num,
+ "Failed to allocate frame to send response to PLOGI request");
+ return;
+ }
+
+ pplogi_rsp = (struct fc_std_els_rjt_rsp *) (frame + FNIC_ETH_FCOE_HDRS_OFFSET);
+ fdls_init_els_rjt_frame(frame, iport);
+
+ FNIC_FCS_DBG(KERN_INFO, fnic->lport->host, fnic->fnic_num,
+ "0x%x: Process PLOGI request from SID: 0x%x",
+ iport->fcid, ntoh24(fchdr->fh_s_id));
+
+ /* We don't support PLOGI request, send a reject */
+ pplogi_rsp->rej.er_reason = 0x0B;
+ pplogi_rsp->rej.er_explan = 0x0;
+ pplogi_rsp->rej.er_vendor = 0x0;
+
+ FNIC_STD_SET_S_ID(pplogi_rsp->fchdr, fchdr->fh_d_id);
+ FNIC_STD_SET_D_ID(pplogi_rsp->fchdr, fchdr->fh_s_id);
+ oxid = FNIC_STD_GET_OX_ID(fchdr);
+ FNIC_STD_SET_OX_ID(pplogi_rsp->fchdr, oxid);
+
+ fnic_send_fcoe_frame(iport, frame, frame_size);
+}
+
+static void
+fdls_process_logo_req(struct fnic_iport_s *iport, struct fc_frame_header *fchdr)
+{
+ struct fc_std_logo *logo = (struct fc_std_logo *)fchdr;
+ uint32_t nport_id;
+ uint64_t nport_name;
+ struct fnic_tport_s *tport;
+ struct fnic *fnic = iport->fnic;
+ uint16_t oxid;
+
+ nport_id = ntoh24(logo->els.fl_n_port_id);
+ nport_name = be64_to_cpu(logo->els.fl_n_port_wwn);
+
+ FNIC_FCS_DBG(KERN_INFO, fnic->lport->host, fnic->fnic_num,
+ "Process LOGO request from fcid: 0x%x", nport_id);
+
+ if (iport->state != FNIC_IPORT_STATE_READY) {
+ FNIC_FCS_DBG(KERN_ERR, fnic->lport->host, fnic->fnic_num,
+ "Dropping LOGO req from 0x%x in iport state: %d",
+ nport_id, iport->state);
+ return;
+ }
+
+ tport = fnic_find_tport_by_fcid(iport, nport_id);
+
+ if (!tport) {
+ /* We are not logged in with the nport, log and drop... */
+ FNIC_FCS_DBG(KERN_ERR, fnic->lport->host, fnic->fnic_num,
+ "Received LOGO from an nport not logged in: 0x%x(0x%llx)",
+ nport_id, nport_name);
+ return;
+ }
+ if (tport->fcid != nport_id) {
+ FNIC_FCS_DBG(KERN_ERR, fnic->lport->host, fnic->fnic_num,
+ "Received LOGO with invalid target port fcid: 0x%x(0x%llx)",
+ nport_id, nport_name);
+ return;
+ }
+ if (tport->timer_pending) {
+ FNIC_FCS_DBG(KERN_ERR, fnic->lport->host, fnic->fnic_num,
+ "tport fcid 0x%x: Canceling disc timer\n",
+ tport->fcid);
+ fnic_del_tport_timer_sync(fnic, tport);
+ tport->timer_pending = 0;
+ }
+
+ /* got a logo in response to adisc to a target which has logged out */
+ if (tport->state == FDLS_TGT_STATE_ADISC) {
+ tport->retry_counter = 0;
+ oxid = tport->active_oxid;
+ fdls_free_oxid(iport, oxid, &tport->active_oxid);
+ fdls_delete_tport(iport, tport);
+ fdls_send_logo_resp(iport, &logo->fchdr);
+ if ((iport->state == FNIC_IPORT_STATE_READY)
+ && (fdls_get_state(&iport->fabric) != FDLS_STATE_SEND_GPNFT)
+ && (fdls_get_state(&iport->fabric) != FDLS_STATE_RSCN_GPN_FT)) {
+ FNIC_FCS_DBG(KERN_ERR, fnic->lport->host, fnic->fnic_num,
+ "Sending GPNFT in response to LOGO from Target:0x%x",
+ nport_id);
+ fdls_send_gpn_ft(iport, FDLS_STATE_SEND_GPNFT);
+ return;
+ }
+ } else {
+ fdls_delete_tport(iport, tport);
+ }
+ if (iport->state == FNIC_IPORT_STATE_READY) {
+ fdls_send_logo_resp(iport, &logo->fchdr);
+ if ((fdls_get_state(&iport->fabric) != FDLS_STATE_SEND_GPNFT) &&
+ (fdls_get_state(&iport->fabric) != FDLS_STATE_RSCN_GPN_FT)) {
+ FNIC_FCS_DBG(KERN_ERR, fnic->lport->host, fnic->fnic_num,
+ "Sending GPNFT in response to LOGO from Target:0x%x",
+ nport_id);
+ fdls_send_gpn_ft(iport, FDLS_STATE_SEND_GPNFT);
+ }
+ }
+}
+
+static void
+fdls_process_rscn(struct fnic_iport_s *iport, struct fc_frame_header *fchdr)
+{
+ struct fc_std_rscn *rscn;
+ struct fc_els_rscn_page *rscn_port = NULL;
+ int num_ports;
+ struct fnic_tport_s *tport, *next;
+ uint32_t nport_id;
+ uint8_t fcid[3];
+ int newports = 0;
+ struct fnic_fdls_fabric_s *fdls = &iport->fabric;
+ struct fnic *fnic = iport->fnic;
+ uint16_t rscn_payload_len;
+
+ FNIC_FCS_DBG(KERN_INFO, fnic->lport->host, fnic->fnic_num,
+ "FDLS process RSCN %p", iport);
+
+ if (iport->state != FNIC_IPORT_STATE_READY) {
+ FNIC_FCS_DBG(KERN_INFO, fnic->lport->host, fnic->fnic_num,
+ "FDLS RSCN received in state(%d). Dropping",
+ fdls_get_state(fdls));
+ return;
+ }
+
+ rscn = (struct fc_std_rscn *)fchdr;
+ rscn_payload_len = be16_to_cpu(rscn->els.rscn_plen);
+
+ /* frame validation */
+ if ((rscn_payload_len % 4 != 0) || (rscn_payload_len < 8)
+ || (rscn_payload_len > 1024)
+ || (rscn->els.rscn_page_len != 4)) {
+ num_ports = 0;
+ FNIC_FCS_DBG(KERN_INFO, fnic->lport->host, fnic->fnic_num,
+ "RSCN payload_len: 0x%x page_len: 0x%x",
+ rscn_payload_len, rscn->els.rscn_page_len);
+ /* if this happens then we need to send ADISC to all the tports. */
+ list_for_each_entry_safe(tport, next, &iport->tport_list, links) {
+ if (tport->state == FDLS_TGT_STATE_READY)
+ tport->flags |= FNIC_FDLS_TPORT_SEND_ADISC;
+ FNIC_FCS_DBG(KERN_INFO, fnic->lport->host, fnic->fnic_num,
+ "RSCN for port id: 0x%x", tport->fcid);
+ }
+ } else {
+ num_ports = (rscn_payload_len - 4) / rscn->els.rscn_page_len;
+ rscn_port = (struct fc_els_rscn_page *)(rscn + 1);
+ }
+ FNIC_FCS_DBG(KERN_INFO, fnic->lport->host, fnic->fnic_num,
+ "RSCN received for num_ports: %d payload_len: %d page_len: %d ",
+ num_ports, rscn_payload_len, rscn->els.rscn_page_len);
+
+ /*
+ * RSCN have at least one Port_ID page , but may not have any port_id
+ * in it. If no port_id is specified in the Port_ID page , we send
+ * ADISC to all the tports
+ */
+
+ while (num_ports) {
+
+ memcpy(fcid, rscn_port->rscn_fid, 3);
+
+ nport_id = ntoh24(fcid);
+ rscn_port++;
+ num_ports--;
+ /* if this happens then we need to send ADISC to all the tports. */
+ if (nport_id == 0) {
+ list_for_each_entry_safe(tport, next, &iport->tport_list,
+ links) {
+ if (tport->state == FDLS_TGT_STATE_READY)
+ tport->flags |= FNIC_FDLS_TPORT_SEND_ADISC;
+
+ FNIC_FCS_DBG(KERN_INFO, fnic->lport->host, fnic->fnic_num,
+ "RSCN for port id: 0x%x", tport->fcid);
+ }
+ break;
+ }
+ tport = fnic_find_tport_by_fcid(iport, nport_id);
+
+ FNIC_FCS_DBG(KERN_INFO, fnic->lport->host, fnic->fnic_num,
+ "RSCN port id list: 0x%x", nport_id);
+
+ if (!tport) {
+ newports++;
+ continue;
+ }
+ if (tport->state == FDLS_TGT_STATE_READY)
+ tport->flags |= FNIC_FDLS_TPORT_SEND_ADISC;
+ }
+
+ FNIC_FCS_DBG(KERN_INFO, fnic->lport->host, fnic->fnic_num,
+ "FDLS process RSCN sending GPN_FT: newports: %d", newports);
+ fdls_send_gpn_ft(iport, FDLS_STATE_RSCN_GPN_FT);
+ fdls_send_rscn_resp(iport, fchdr);
+}
+static void
+fdls_process_adisc_req(struct fnic_iport_s *iport,
+ struct fc_frame_header *fchdr)
+{
+ struct fc_std_els_adisc *padisc_acc;
+ struct fc_std_els_adisc *adisc_req = (struct fc_std_els_adisc *)fchdr;
+ uint64_t frame_wwnn;
+ uint64_t frame_wwpn;
+ uint32_t tgt_fcid;
+ struct fnic_tport_s *tport;
+ uint8_t *fcid;
+ uint8_t *rjt_frame;
+ uint8_t *acc_frame;
+ struct fc_std_els_rjt_rsp *prjts_rsp;
+ uint16_t oxid;
+ struct fnic *fnic = iport->fnic;
+ uint16_t rjt_frame_size = FNIC_ETH_FCOE_HDRS_OFFSET +
+ sizeof(struct fc_std_els_rjt_rsp);
+ uint16_t acc_frame_size = FNIC_ETH_FCOE_HDRS_OFFSET +
+ sizeof(struct fc_std_els_adisc);
+
+ FNIC_FCS_DBG(KERN_INFO, fnic->lport->host, fnic->fnic_num,
+ "Process ADISC request %d", iport->fnic->fnic_num);
+
+ fcid = FNIC_STD_GET_S_ID(fchdr);
+ tgt_fcid = ntoh24(fcid);
+ tport = fnic_find_tport_by_fcid(iport, tgt_fcid);
+ if (!tport) {
+ FNIC_FCS_DBG(KERN_ERR, fnic->lport->host, fnic->fnic_num,
+ "tport for fcid: 0x%x not found. Dropping ADISC req.",
+ tgt_fcid);
+ return;
+ }
+ if (iport->state != FNIC_IPORT_STATE_READY) {
+ FNIC_FCS_DBG(KERN_ERR, fnic->lport->host, fnic->fnic_num,
+ "Dropping ADISC req from fcid: 0x%x in iport state: %d",
+ tgt_fcid, iport->state);
+ return;
+ }
+
+ frame_wwnn = be64_to_cpu(adisc_req->els.adisc_wwnn);
+ frame_wwpn = be64_to_cpu(adisc_req->els.adisc_wwpn);
+
+ if ((frame_wwnn != tport->wwnn) || (frame_wwpn != tport->wwpn)) {
+ /* send reject */
+ FNIC_FCS_DBG(KERN_ERR, fnic->lport->host, fnic->fnic_num,
+ "ADISC req from fcid: 0x%x mismatch wwpn: 0x%llx wwnn: 0x%llx",
+ tgt_fcid, frame_wwpn, frame_wwnn);
+ FNIC_FCS_DBG(KERN_ERR, fnic->lport->host, fnic->fnic_num,
+ "local tport wwpn: 0x%llx wwnn: 0x%llx. Sending RJT",
+ tport->wwpn, tport->wwnn);
+
+ rjt_frame = fdls_alloc_frame(iport);
+ if (rjt_frame == NULL) {
+ FNIC_FCS_DBG(KERN_ERR, fnic->lport->host, fnic->fnic_num,
+ "Failed to allocate rjt_frame to send response to ADISC request");
+ return;
+ }
+
+ prjts_rsp = (struct fc_std_els_rjt_rsp *) (rjt_frame + FNIC_ETH_FCOE_HDRS_OFFSET);
+ fdls_init_els_rjt_frame(rjt_frame, iport);
+
+ prjts_rsp->rej.er_reason = 0x03; /* logical error */
+ prjts_rsp->rej.er_explan = 0x1E; /* N_port login required */
+ prjts_rsp->rej.er_vendor = 0x0;
+
+ FNIC_STD_SET_S_ID(prjts_rsp->fchdr, fchdr->fh_d_id);
+ FNIC_STD_SET_D_ID(prjts_rsp->fchdr, fchdr->fh_s_id);
+ oxid = FNIC_STD_GET_OX_ID(fchdr);
+ FNIC_STD_SET_OX_ID(prjts_rsp->fchdr, oxid);
+
+ fnic_send_fcoe_frame(iport, rjt_frame, rjt_frame_size);
+ return;
+ }
+
+ acc_frame = fdls_alloc_frame(iport);
+ if (acc_frame == NULL) {
+ FNIC_FCS_DBG(KERN_ERR, fnic->lport->host, fnic->fnic_num,
+ "Failed to allocate frame to send ADISC accept");
+ return;
+ }
+
+ padisc_acc = (struct fc_std_els_adisc *) (acc_frame + FNIC_ETH_FCOE_HDRS_OFFSET);
+
+ FNIC_STD_SET_S_ID(padisc_acc->fchdr, fchdr->fh_d_id);
+ FNIC_STD_SET_D_ID(padisc_acc->fchdr, fchdr->fh_s_id);
+
+ FNIC_STD_SET_F_CTL(padisc_acc->fchdr, FNIC_ELS_REP_FCTL << 16);
+ FNIC_STD_SET_R_CTL(padisc_acc->fchdr, FC_RCTL_ELS_REP);
+ FNIC_STD_SET_TYPE(padisc_acc->fchdr, FC_TYPE_ELS);
+
+ oxid = FNIC_STD_GET_OX_ID(fchdr);
+ FNIC_STD_SET_OX_ID(padisc_acc->fchdr, oxid);
+ FNIC_STD_SET_RX_ID(padisc_acc->fchdr, FNIC_UNASSIGNED_RXID);
+
+ padisc_acc->els.adisc_cmd = ELS_LS_ACC;
+
+ FNIC_STD_SET_NPORT_NAME(&padisc_acc->els.adisc_wwpn,
+ iport->wwpn);
+ FNIC_STD_SET_NODE_NAME(&padisc_acc->els.adisc_wwnn,
+ iport->wwnn);
+ memcpy(padisc_acc->els.adisc_port_id, fchdr->fh_d_id, 3);
+
+ fnic_send_fcoe_frame(iport, acc_frame, acc_frame_size);
+}
+
/*
* Performs a validation for all FCOE frames and return the frame type
*/
@@ -3529,6 +4187,31 @@ void fnic_fdls_recv_frame(struct fnic_iport_s *iport, void *rx_frame,
case FNIC_FABRIC_BLS_ABTS_RSP:
fdls_process_fabric_abts_rsp(iport, fchdr);
break;
+ case FNIC_BLS_ABTS_REQ:
+ fdls_process_abts_req(iport, fchdr);
+ break;
+ case FNIC_ELS_UNSUPPORTED_REQ:
+ fdls_process_unsupported_els_req(iport, fchdr);
+ break;
+ case FNIC_ELS_PLOGI_REQ:
+ fdls_process_plogi_req(iport, fchdr);
+ break;
+ case FNIC_ELS_RSCN_REQ:
+ fdls_process_rscn(iport, fchdr);
+ break;
+ case FNIC_ELS_LOGO_REQ:
+ fdls_process_logo_req(iport, fchdr);
+ break;
+ case FNIC_ELS_RRQ:
+ case FNIC_ELS_ECHO_REQ:
+ fdls_process_els_req(iport, fchdr, len);
+ break;
+ case FNIC_ELS_ADISC:
+ fdls_process_adisc_req(iport, fchdr);
+ break;
+ case FNIC_ELS_RLS:
+ fdls_process_rls_req(iport, fchdr);
+ 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);
--
2.47.0
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