static void bnx2fc_flogi_resp(struct fc_seq *seq, struct fc_frame *fp,
void *arg)
{
struct fcoe_ctlr *fip = arg;
struct fc_exch *exch = fc_seq_exch(seq);
struct fc_lport *lport = exch->lp;
u8 *mac;
u8 op;
if (IS_ERR(fp))
goto done;
mac = fr_cb(fp)->granted_mac;
if (is_zero_ether_addr(mac)) {
op = fc_frame_payload_op(fp);
if (lport->vport) {
if (op == ELS_LS_RJT) {
printk(KERN_ERR PFX "bnx2fc_flogi_resp is LS_RJT\n");
fc_vport_terminate(lport->vport);
fc_frame_free(fp);
return;
}
}
fcoe_ctlr_recv_flogi(fip, lport, fp);
}
if (!is_zero_ether_addr(mac))
fip->update_mac(lport, mac);
done:
fc_lport_flogi_resp(seq, fp, lport);
}
static void fc_lport_recv_req(struct fc_lport *lport, struct fc_seq *sp,
struct fc_frame *fp)
{
struct fc_frame_header *fh = fc_frame_header_get(fp);
void (*recv) (struct fc_seq *, struct fc_frame *, struct fc_lport *);
mutex_lock(&lport->lp_mutex);
/*
* Handle special ELS cases like FLOGI, LOGO, and
* RSCN here. These don't require a session.
* Even if we had a session, it might not be ready.
*/
if (!lport->link_up)
fc_frame_free(fp);
else if (fh->fh_type == FC_TYPE_ELS &&
fh->fh_r_ctl == FC_RCTL_ELS_REQ) {
/*
* Check opcode.
*/
recv = lport->tt.rport_recv_req;
switch (fc_frame_payload_op(fp)) {
case ELS_FLOGI:
recv = fc_lport_recv_flogi_req;
break;
case ELS_LOGO:
fh = fc_frame_header_get(fp);
if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI)
recv = fc_lport_recv_logo_req;
break;
case ELS_RSCN:
recv = lport->tt.disc_recv_req;
break;
case ELS_ECHO:
recv = fc_lport_recv_echo_req;
break;
case ELS_RLIR:
recv = fc_lport_recv_rlir_req;
break;
case ELS_RNID:
recv = fc_lport_recv_rnid_req;
break;
}
recv(sp, fp, lport);
} else {
FC_LPORT_DBG(lport, "dropping invalid frame (eof %x)\n",
fr_eof(fp));
fc_frame_free(fp);
}
mutex_unlock(&lport->lp_mutex);
/*
* The common exch_done for all request may not be good
* if any request requires longer hold on exhange. XXX
*/
lport->tt.exch_done(sp);
}
/**
* fc_lport_bsg_resp() - The common response handler for FC Passthrough requests
* @sp: The sequence for the FC Passthrough response
* @fp: The response frame
* @info_arg: The BSG info that the response is for
*/
static void fc_lport_bsg_resp(struct fc_seq *sp, struct fc_frame *fp,
void *info_arg)
{
struct fc_bsg_info *info = info_arg;
struct fc_bsg_job *job = info->job;
struct fc_lport *lport = info->lport;
struct fc_frame_header *fh;
size_t len;
void *buf;
if (IS_ERR(fp)) {
job->reply->result = (PTR_ERR(fp) == -FC_EX_CLOSED) ?
-ECONNABORTED : -ETIMEDOUT;
job->reply_len = sizeof(uint32_t);
job->state_flags |= FC_RQST_STATE_DONE;
job->job_done(job);
kfree(info);
return;
}
mutex_lock(&lport->lp_mutex);
fh = fc_frame_header_get(fp);
len = fr_len(fp) - sizeof(*fh);
buf = fc_frame_payload_get(fp, 0);
if (fr_sof(fp) == FC_SOF_I3 && !ntohs(fh->fh_seq_cnt)) {
/* Get the response code from the first frame payload */
unsigned short cmd = (info->rsp_code == FC_FS_ACC) ?
ntohs(((struct fc_ct_hdr *)buf)->ct_cmd) :
(unsigned short)fc_frame_payload_op(fp);
/* Save the reply status of the job */
job->reply->reply_data.ctels_reply.status =
(cmd == info->rsp_code) ?
FC_CTELS_STATUS_OK : FC_CTELS_STATUS_REJECT;
}
job->reply->reply_payload_rcv_len +=
fc_copy_buffer_to_sglist(buf, len, info->sg, &info->nents,
&info->offset, KM_BIO_SRC_IRQ, NULL);
if (fr_eof(fp) == FC_EOF_T &&
(ntoh24(fh->fh_f_ctl) & (FC_FC_LAST_SEQ | FC_FC_END_SEQ)) ==
(FC_FC_LAST_SEQ | FC_FC_END_SEQ)) {
if (job->reply->reply_payload_rcv_len >
job->reply_payload.payload_len)
job->reply->reply_payload_rcv_len =
job->reply_payload.payload_len;
job->reply->result = 0;
job->state_flags |= FC_RQST_STATE_DONE;
job->job_done(job);
kfree(info);
}
fc_frame_free(fp);
mutex_unlock(&lport->lp_mutex);
}
/**
* fc_lport_recv_req() - The generic lport request handler
* @lport: The local port that received the request
* @fp: The request frame
*
* This function will see if the lport handles the request or
* if an rport should handle the request.
*
* Locking Note: This function should not be called with the lport
* lock held becuase it will grab the lock.
*/
static void fc_lport_recv_req(struct fc_lport *lport, struct fc_frame *fp)
{
struct fc_frame_header *fh = fc_frame_header_get(fp);
void (*recv)(struct fc_lport *, struct fc_frame *);
mutex_lock(&lport->lp_mutex);
/*
* Handle special ELS cases like FLOGI, LOGO, and
* RSCN here. These don't require a session.
* Even if we had a session, it might not be ready.
*/
if (!lport->link_up)
fc_frame_free(fp);
else if (fh->fh_type == FC_TYPE_ELS &&
fh->fh_r_ctl == FC_RCTL_ELS_REQ) {
/*
* Check opcode.
*/
recv = lport->tt.rport_recv_req;
switch (fc_frame_payload_op(fp)) {
case ELS_FLOGI:
if (!lport->point_to_multipoint)
recv = fc_lport_recv_flogi_req;
break;
case ELS_LOGO:
if (fc_frame_sid(fp) == FC_FID_FLOGI)
recv = fc_lport_recv_logo_req;
break;
case ELS_RSCN:
recv = lport->tt.disc_recv_req;
break;
case ELS_ECHO:
recv = fc_lport_recv_echo_req;
break;
case ELS_RLIR:
recv = fc_lport_recv_rlir_req;
break;
case ELS_RNID:
recv = fc_lport_recv_rnid_req;
break;
}
recv(lport, fp);
} else {
FC_LPORT_DBG(lport, "dropping invalid frame (eof %x)\n",
fr_eof(fp));
fc_frame_free(fp);
}
mutex_unlock(&lport->lp_mutex);
}
static void fc_lport_recv_req(struct fc_lport *lport, struct fc_seq *sp,
struct fc_frame *fp)
{
struct fc_frame_header *fh = fc_frame_header_get(fp);
void (*recv) (struct fc_seq *, struct fc_frame *, struct fc_lport *);
mutex_lock(&lport->lp_mutex);
if (!lport->link_up)
fc_frame_free(fp);
else if (fh->fh_type == FC_TYPE_ELS &&
fh->fh_r_ctl == FC_RCTL_ELS_REQ) {
recv = lport->tt.rport_recv_req;
switch (fc_frame_payload_op(fp)) {
case ELS_FLOGI:
recv = fc_lport_recv_flogi_req;
break;
case ELS_LOGO:
fh = fc_frame_header_get(fp);
if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI)
recv = fc_lport_recv_logo_req;
break;
case ELS_RSCN:
recv = lport->tt.disc_recv_req;
break;
case ELS_ECHO:
recv = fc_lport_recv_echo_req;
break;
case ELS_RLIR:
recv = fc_lport_recv_rlir_req;
break;
case ELS_RNID:
recv = fc_lport_recv_rnid_req;
break;
}
recv(sp, fp, lport);
} else {
FC_LPORT_DBG(lport, "dropping invalid frame (eof %x)\n",
fr_eof(fp));
fc_frame_free(fp);
}
mutex_unlock(&lport->lp_mutex);
lport->tt.exch_done(sp);
}
/**
* fc_lport_recv_els_req() - The generic lport ELS request handler
* @lport: The local port that received the request
* @fp: The request frame
*
* This function will see if the lport handles the request or
* if an rport should handle the request.
*
* Locking Note: This function should not be called with the lport
* lock held because it will grab the lock.
*/
static void fc_lport_recv_els_req(struct fc_lport *lport,
struct fc_frame *fp)
{
void (*recv)(struct fc_lport *, struct fc_frame *);
mutex_lock(&lport->lp_mutex);
/*
* Handle special ELS cases like FLOGI, LOGO, and
* RSCN here. These don't require a session.
* Even if we had a session, it might not be ready.
*/
if (!lport->link_up)
fc_frame_free(fp);
else {
/*
* Check opcode.
*/
recv = lport->tt.rport_recv_req;
switch (fc_frame_payload_op(fp)) {
case ELS_FLOGI:
if (!lport->point_to_multipoint)
recv = fc_lport_recv_flogi_req;
break;
case ELS_LOGO:
if (fc_frame_sid(fp) == FC_FID_FLOGI)
recv = fc_lport_recv_logo_req;
break;
case ELS_RSCN:
recv = lport->tt.disc_recv_req;
break;
case ELS_ECHO:
recv = fc_lport_recv_echo_req;
break;
case ELS_RLIR:
recv = fc_lport_recv_rlir_req;
break;
case ELS_RNID:
recv = fc_lport_recv_rnid_req;
break;
}
recv(lport, fp);
}
mutex_unlock(&lport->lp_mutex);
}
static void fc_lport_recv_els_req(struct fc_lport *lport,
struct fc_frame *fp)
{
void (*recv)(struct fc_lport *, struct fc_frame *);
mutex_lock(&lport->lp_mutex);
if (!lport->link_up)
fc_frame_free(fp);
else {
recv = lport->tt.rport_recv_req;
switch (fc_frame_payload_op(fp)) {
case ELS_FLOGI:
if (!lport->point_to_multipoint)
recv = fc_lport_recv_flogi_req;
break;
case ELS_LOGO:
if (fc_frame_sid(fp) == FC_FID_FLOGI)
recv = fc_lport_recv_logo_req;
break;
case ELS_RSCN:
recv = lport->tt.disc_recv_req;
break;
case ELS_ECHO:
recv = fc_lport_recv_echo_req;
break;
case ELS_RLIR:
recv = fc_lport_recv_rlir_req;
break;
case ELS_RNID:
recv = fc_lport_recv_rnid_req;
break;
}
recv(lport, fp);
}
mutex_unlock(&lport->lp_mutex);
}
/**
* fc_lport_logo_resp() - Handle response to LOGO request
* @sp: The sequence that the LOGO was on
* @fp: The LOGO frame
* @lp_arg: The lport port that received the LOGO request
*
* Locking Note: This function will be called without the lport lock
* held, but it will lock, call an _enter_* function or fc_lport_error()
* and then unlock the lport.
*/
void fc_lport_logo_resp(struct fc_seq *sp, struct fc_frame *fp,
void *lp_arg)
{
struct fc_lport *lport = lp_arg;
u8 op;
FC_LPORT_DBG(lport, "Received a LOGO %s\n", fc_els_resp_type(fp));
if (fp == ERR_PTR(-FC_EX_CLOSED))
return;
mutex_lock(&lport->lp_mutex);
if (lport->state != LPORT_ST_LOGO) {
FC_LPORT_DBG(lport, "Received a LOGO response, but in state "
"%s\n", fc_lport_state(lport));
if (IS_ERR(fp))
goto err;
goto out;
}
if (IS_ERR(fp)) {
fc_lport_error(lport, fp);
goto err;
}
op = fc_frame_payload_op(fp);
if (op == ELS_LS_ACC)
fc_lport_enter_disabled(lport);
else
fc_lport_error(lport, fp);
out:
fc_frame_free(fp);
err:
mutex_unlock(&lport->lp_mutex);
}
/**
* fc_els_resp_type() - Return a string describing the ELS response
* @fp: The frame pointer or possible error code
*/
const char *fc_els_resp_type(struct fc_frame *fp)
{
const char *msg;
struct fc_frame_header *fh;
struct fc_ct_hdr *ct;
if (IS_ERR(fp)) {
switch (-PTR_ERR(fp)) {
case FC_NO_ERR:
msg = "response no error";
break;
case FC_EX_TIMEOUT:
msg = "response timeout";
break;
case FC_EX_CLOSED:
msg = "response closed";
break;
default:
msg = "response unknown error";
break;
}
} else {
fh = fc_frame_header_get(fp);
switch (fh->fh_type) {
case FC_TYPE_ELS:
switch (fc_frame_payload_op(fp)) {
case ELS_LS_ACC:
msg = "accept";
break;
case ELS_LS_RJT:
msg = "reject";
break;
default:
msg = "response unknown ELS";
break;
}
break;
case FC_TYPE_CT:
ct = fc_frame_payload_get(fp, sizeof(*ct));
if (ct) {
switch (ntohs(ct->ct_cmd)) {
case FC_FS_ACC:
msg = "CT accept";
break;
case FC_FS_RJT:
msg = "CT reject";
break;
default:
msg = "response unknown CT";
break;
}
} else {
msg = "short CT response";
}
break;
default:
msg = "response not ELS or CT";
break;
}
}
return msg;
}
/**
* fc_lport_flogi_resp() - Handle response to FLOGI request
* @sp: The sequence that the FLOGI was on
* @fp: The FLOGI response frame
* @lp_arg: The lport port that received the FLOGI response
*
* Locking Note: This function will be called without the lport lock
* held, but it will lock, call an _enter_* function or fc_lport_error()
* and then unlock the lport.
*/
void fc_lport_flogi_resp(struct fc_seq *sp, struct fc_frame *fp,
void *lp_arg)
{
struct fc_lport *lport = lp_arg;
struct fc_els_flogi *flp;
u32 did;
u16 csp_flags;
unsigned int r_a_tov;
unsigned int e_d_tov;
u16 mfs;
FC_LPORT_DBG(lport, "Received a FLOGI %s\n", fc_els_resp_type(fp));
if (fp == ERR_PTR(-FC_EX_CLOSED))
return;
mutex_lock(&lport->lp_mutex);
if (lport->state != LPORT_ST_FLOGI) {
FC_LPORT_DBG(lport, "Received a FLOGI response, but in state "
"%s\n", fc_lport_state(lport));
if (IS_ERR(fp))
goto err;
goto out;
}
if (IS_ERR(fp)) {
fc_lport_error(lport, fp);
goto err;
}
did = fc_frame_did(fp);
if (fc_frame_payload_op(fp) == ELS_LS_ACC && did) {
flp = fc_frame_payload_get(fp, sizeof(*flp));
if (flp) {
mfs = ntohs(flp->fl_csp.sp_bb_data) &
FC_SP_BB_DATA_MASK;
if (mfs >= FC_SP_MIN_MAX_PAYLOAD &&
mfs < lport->mfs)
lport->mfs = mfs;
csp_flags = ntohs(flp->fl_csp.sp_features);
r_a_tov = ntohl(flp->fl_csp.sp_r_a_tov);
e_d_tov = ntohl(flp->fl_csp.sp_e_d_tov);
if (csp_flags & FC_SP_FT_EDTR)
e_d_tov /= 1000000;
lport->npiv_enabled = !!(csp_flags & FC_SP_FT_NPIV_ACC);
if ((csp_flags & FC_SP_FT_FPORT) == 0) {
if (e_d_tov > lport->e_d_tov)
lport->e_d_tov = e_d_tov;
lport->r_a_tov = 2 * e_d_tov;
fc_lport_set_port_id(lport, did, fp);
printk(KERN_INFO "host%d: libfc: "
"Port (%6.6x) entered "
"point-to-point mode\n",
lport->host->host_no, did);
fc_lport_ptp_setup(lport, fc_frame_sid(fp),
get_unaligned_be64(
&flp->fl_wwpn),
get_unaligned_be64(
&flp->fl_wwnn));
} else {
lport->e_d_tov = e_d_tov;
lport->r_a_tov = r_a_tov;
fc_host_fabric_name(lport->host) =
get_unaligned_be64(&flp->fl_wwnn);
fc_lport_set_port_id(lport, did, fp);
fc_lport_enter_dns(lport);
}
}
} else {
FC_LPORT_DBG(lport, "FLOGI RJT or bad response\n");
fc_lport_error(lport, fp);
}
out:
fc_frame_free(fp);
err:
mutex_unlock(&lport->lp_mutex);
}
void bnx2fc_rec_compl(struct bnx2fc_els_cb_arg *cb_arg)
{
struct bnx2fc_cmd *orig_io_req, *new_io_req;
struct bnx2fc_cmd *rec_req;
struct bnx2fc_mp_req *mp_req;
struct fc_frame_header *fc_hdr, *fh;
struct fc_els_ls_rjt *rjt;
struct fc_els_rec_acc *acc;
struct bnx2fc_rport *tgt;
struct fcoe_err_report_entry *err_entry;
struct scsi_cmnd *sc_cmd;
enum fc_rctl r_ctl;
unsigned char *buf;
void *resp_buf;
struct fc_frame *fp;
u8 opcode;
u32 offset;
u32 e_stat;
u32 resp_len, hdr_len;
int rc = 0;
bool send_seq_clnp = false;
bool abort_io = false;
BNX2FC_MISC_DBG("Entered rec_compl callback\n");
rec_req = cb_arg->io_req;
orig_io_req = cb_arg->aborted_io_req;
BNX2FC_IO_DBG(rec_req, "rec_compl: orig xid = 0x%x", orig_io_req->xid);
tgt = orig_io_req->tgt;
/* Handle REC timeout case */
if (test_and_clear_bit(BNX2FC_FLAG_ELS_TIMEOUT, &rec_req->req_flags)) {
BNX2FC_IO_DBG(rec_req, "timed out, abort "
"orig_io - 0x%x\n",
orig_io_req->xid);
/* els req is timed out. send abts for els */
rc = bnx2fc_initiate_abts(rec_req);
if (rc != SUCCESS) {
BNX2FC_IO_DBG(rec_req, "rec_compl: initiate_abts "
"failed. issue cleanup\n");
bnx2fc_initiate_cleanup(rec_req);
}
orig_io_req->rec_retry++;
/* REC timedout. send ABTS to the orig IO req */
if (orig_io_req->rec_retry <= REC_RETRY_COUNT) {
spin_unlock_bh(&tgt->tgt_lock);
rc = bnx2fc_send_rec(orig_io_req);
spin_lock_bh(&tgt->tgt_lock);
if (!rc)
goto rec_compl_done;
}
rc = bnx2fc_initiate_abts(orig_io_req);
if (rc != SUCCESS) {
BNX2FC_IO_DBG(rec_req, "rec_compl: initiate_abts "
"failed xid = 0x%x. issue cleanup\n",
orig_io_req->xid);
bnx2fc_initiate_cleanup(orig_io_req);
}
goto rec_compl_done;
}
if (test_bit(BNX2FC_FLAG_IO_COMPL, &orig_io_req->req_flags)) {
BNX2FC_IO_DBG(rec_req, "completed"
"orig_io - 0x%x\n",
orig_io_req->xid);
goto rec_compl_done;
}
if (test_bit(BNX2FC_FLAG_ISSUE_ABTS, &orig_io_req->req_flags)) {
BNX2FC_IO_DBG(rec_req, "abts in prog "
"orig_io - 0x%x\n",
orig_io_req->xid);
goto rec_compl_done;
}
mp_req = &(rec_req->mp_req);
fc_hdr = &(mp_req->resp_fc_hdr);
resp_len = mp_req->resp_len;
acc = resp_buf = mp_req->resp_buf;
hdr_len = sizeof(*fc_hdr);
buf = kzalloc(PAGE_SIZE, GFP_ATOMIC);
if (!buf) {
printk(KERN_ERR PFX "rec buf: mem alloc failure\n");
goto rec_compl_done;
}
memcpy(buf, fc_hdr, hdr_len);
memcpy(buf + hdr_len, resp_buf, resp_len);
fp = fc_frame_alloc(NULL, resp_len);
if (!fp) {
printk(KERN_ERR PFX "fc_frame_alloc failure\n");
goto free_buf;
}
fh = (struct fc_frame_header *) fc_frame_header_get(fp);
/* Copy FC Frame header and payload into the frame */
memcpy(fh, buf, hdr_len + resp_len);
opcode = fc_frame_payload_op(fp);
if (opcode == ELS_LS_RJT) {
BNX2FC_IO_DBG(rec_req, "opcode is RJT\n");
rjt = fc_frame_payload_get(fp, sizeof(*rjt));
if ((rjt->er_reason == ELS_RJT_LOGIC ||
rjt->er_reason == ELS_RJT_UNAB) &&
rjt->er_explan == ELS_EXPL_OXID_RXID) {
BNX2FC_IO_DBG(rec_req, "handle CMD LOST case\n");
new_io_req = bnx2fc_cmd_alloc(tgt);
if (!new_io_req)
goto abort_io;
new_io_req->sc_cmd = orig_io_req->sc_cmd;
/* cleanup orig_io_req that is with the FW */
set_bit(BNX2FC_FLAG_CMD_LOST,
&orig_io_req->req_flags);
bnx2fc_initiate_cleanup(orig_io_req);
/* Post a new IO req with the same sc_cmd */
BNX2FC_IO_DBG(rec_req, "Post IO request again\n");
rc = bnx2fc_post_io_req(tgt, new_io_req);
if (!rc)
goto free_frame;
BNX2FC_IO_DBG(rec_req, "REC: io post err\n");
}
abort_io:
rc = bnx2fc_initiate_abts(orig_io_req);
if (rc != SUCCESS) {
BNX2FC_IO_DBG(rec_req, "rec_compl: initiate_abts "
"failed. issue cleanup\n");
bnx2fc_initiate_cleanup(orig_io_req);
}
} else if (opcode == ELS_LS_ACC) {
/* REVISIT: Check if the exchange is already aborted */
offset = ntohl(acc->reca_fc4value);
e_stat = ntohl(acc->reca_e_stat);
if (e_stat & ESB_ST_SEQ_INIT) {
BNX2FC_IO_DBG(rec_req, "target has the seq init\n");
goto free_frame;
}
BNX2FC_IO_DBG(rec_req, "e_stat = 0x%x, offset = 0x%x\n",
e_stat, offset);
/* Seq initiative is with us */
err_entry = (struct fcoe_err_report_entry *)
&orig_io_req->err_entry;
sc_cmd = orig_io_req->sc_cmd;
if (sc_cmd->sc_data_direction == DMA_TO_DEVICE) {
/* SCSI WRITE command */
if (offset == orig_io_req->data_xfer_len) {
BNX2FC_IO_DBG(rec_req, "WRITE - resp lost\n");
/* FCP_RSP lost */
r_ctl = FC_RCTL_DD_CMD_STATUS;
offset = 0;
} else {
/* start transmitting from offset */
BNX2FC_IO_DBG(rec_req, "XFER_RDY/DATA lost\n");
send_seq_clnp = true;
r_ctl = FC_RCTL_DD_DATA_DESC;
if (bnx2fc_initiate_seq_cleanup(orig_io_req,
offset, r_ctl))
abort_io = true;
/* XFER_RDY */
}
} else {
/* SCSI READ command */
if (err_entry->data.rx_buf_off ==
orig_io_req->data_xfer_len) {
/* FCP_RSP lost */
BNX2FC_IO_DBG(rec_req, "READ - resp lost\n");
r_ctl = FC_RCTL_DD_CMD_STATUS;
offset = 0;
} else {
/* request retransmission from this offset */
send_seq_clnp = true;
offset = err_entry->data.rx_buf_off;
BNX2FC_IO_DBG(rec_req, "RD DATA lost\n");
/* FCP_DATA lost */
r_ctl = FC_RCTL_DD_SOL_DATA;
if (bnx2fc_initiate_seq_cleanup(orig_io_req,
offset, r_ctl))
abort_io = true;
}
}
if (abort_io) {
rc = bnx2fc_initiate_abts(orig_io_req);
if (rc != SUCCESS) {
BNX2FC_IO_DBG(rec_req, "rec_compl:initiate_abts"
" failed. issue cleanup\n");
bnx2fc_initiate_cleanup(orig_io_req);
}
} else if (!send_seq_clnp) {
BNX2FC_IO_DBG(rec_req, "Send SRR - FCP_RSP\n");
spin_unlock_bh(&tgt->tgt_lock);
rc = bnx2fc_send_srr(orig_io_req, offset, r_ctl);
spin_lock_bh(&tgt->tgt_lock);
if (rc) {
BNX2FC_IO_DBG(rec_req, "Unable to send SRR"
" IO will abort\n");
}
}
}
free_frame:
fc_frame_free(fp);
free_buf:
kfree(buf);
rec_compl_done:
kref_put(&orig_io_req->refcount, bnx2fc_cmd_release);
kfree(cb_arg);
}
void bnx2fc_srr_compl(struct bnx2fc_els_cb_arg *cb_arg)
{
struct bnx2fc_mp_req *mp_req;
struct fc_frame_header *fc_hdr, *fh;
struct bnx2fc_cmd *srr_req;
struct bnx2fc_cmd *orig_io_req;
struct fc_frame *fp;
unsigned char *buf;
void *resp_buf;
u32 resp_len, hdr_len;
u8 opcode;
int rc = 0;
orig_io_req = cb_arg->aborted_io_req;
srr_req = cb_arg->io_req;
if (test_and_clear_bit(BNX2FC_FLAG_ELS_TIMEOUT, &srr_req->req_flags)) {
/* SRR timedout */
BNX2FC_IO_DBG(srr_req, "srr timed out, abort "
"orig_io - 0x%x\n",
orig_io_req->xid);
rc = bnx2fc_initiate_abts(srr_req);
if (rc != SUCCESS) {
BNX2FC_IO_DBG(srr_req, "srr_compl: initiate_abts "
"failed. issue cleanup\n");
bnx2fc_initiate_cleanup(srr_req);
}
if (test_bit(BNX2FC_FLAG_IO_COMPL, &orig_io_req->req_flags) ||
test_bit(BNX2FC_FLAG_ISSUE_ABTS, &orig_io_req->req_flags)) {
BNX2FC_IO_DBG(srr_req, "srr_compl:xid 0x%x flags = %lx",
orig_io_req->xid, orig_io_req->req_flags);
goto srr_compl_done;
}
orig_io_req->srr_retry++;
if (orig_io_req->srr_retry <= SRR_RETRY_COUNT) {
struct bnx2fc_rport *tgt = orig_io_req->tgt;
spin_unlock_bh(&tgt->tgt_lock);
rc = bnx2fc_send_srr(orig_io_req,
orig_io_req->srr_offset,
orig_io_req->srr_rctl);
spin_lock_bh(&tgt->tgt_lock);
if (!rc)
goto srr_compl_done;
}
rc = bnx2fc_initiate_abts(orig_io_req);
if (rc != SUCCESS) {
BNX2FC_IO_DBG(srr_req, "srr_compl: initiate_abts "
"failed xid = 0x%x. issue cleanup\n",
orig_io_req->xid);
bnx2fc_initiate_cleanup(orig_io_req);
}
goto srr_compl_done;
}
if (test_bit(BNX2FC_FLAG_IO_COMPL, &orig_io_req->req_flags) ||
test_bit(BNX2FC_FLAG_ISSUE_ABTS, &orig_io_req->req_flags)) {
BNX2FC_IO_DBG(srr_req, "srr_compl:xid - 0x%x flags = %lx",
orig_io_req->xid, orig_io_req->req_flags);
goto srr_compl_done;
}
mp_req = &(srr_req->mp_req);
fc_hdr = &(mp_req->resp_fc_hdr);
resp_len = mp_req->resp_len;
resp_buf = mp_req->resp_buf;
hdr_len = sizeof(*fc_hdr);
buf = kzalloc(PAGE_SIZE, GFP_ATOMIC);
if (!buf) {
printk(KERN_ERR PFX "srr buf: mem alloc failure\n");
goto srr_compl_done;
}
memcpy(buf, fc_hdr, hdr_len);
memcpy(buf + hdr_len, resp_buf, resp_len);
fp = fc_frame_alloc(NULL, resp_len);
if (!fp) {
printk(KERN_ERR PFX "fc_frame_alloc failure\n");
goto free_buf;
}
fh = (struct fc_frame_header *) fc_frame_header_get(fp);
/* Copy FC Frame header and payload into the frame */
memcpy(fh, buf, hdr_len + resp_len);
opcode = fc_frame_payload_op(fp);
switch (opcode) {
case ELS_LS_ACC:
BNX2FC_IO_DBG(srr_req, "SRR success\n");
break;
case ELS_LS_RJT:
BNX2FC_IO_DBG(srr_req, "SRR rejected\n");
rc = bnx2fc_initiate_abts(orig_io_req);
if (rc != SUCCESS) {
BNX2FC_IO_DBG(srr_req, "srr_compl: initiate_abts "
"failed xid = 0x%x. issue cleanup\n",
orig_io_req->xid);
bnx2fc_initiate_cleanup(orig_io_req);
}
break;
default:
BNX2FC_IO_DBG(srr_req, "srr compl - invalid opcode = %d\n",
opcode);
break;
}
fc_frame_free(fp);
free_buf:
kfree(buf);
srr_compl_done:
kref_put(&orig_io_req->refcount, bnx2fc_cmd_release);
}
static void qedf_rec_compl(struct qedf_els_cb_arg *cb_arg)
{
struct qedf_ioreq *orig_io_req;
struct qedf_ioreq *rec_req;
struct qedf_mp_req *mp_req;
struct fc_frame_header *mp_fc_hdr, *fh;
struct fc_frame *fp;
void *resp_buf, *fc_payload;
u32 resp_len;
struct fc_lport *lport;
struct qedf_ctx *qedf;
int refcount;
enum fc_rctl r_ctl;
struct fc_els_ls_rjt *rjt;
struct fc_els_rec_acc *acc;
u8 opcode;
u32 offset, e_stat;
struct scsi_cmnd *sc_cmd;
bool srr_needed = false;
rec_req = cb_arg->io_req;
qedf = rec_req->fcport->qedf;
lport = qedf->lport;
orig_io_req = cb_arg->aborted_io_req;
if (!orig_io_req)
goto out_free;
if (rec_req->event != QEDF_IOREQ_EV_ELS_TMO &&
rec_req->event != QEDF_IOREQ_EV_ELS_ERR_DETECT)
cancel_delayed_work_sync(&orig_io_req->timeout_work);
refcount = kref_read(&orig_io_req->refcount);
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, "Entered: orig_io=%p,"
" orig_io_xid=0x%x, rec_xid=0x%x, refcount=%d\n",
orig_io_req, orig_io_req->xid, rec_req->xid, refcount);
/* If a REC times out, free resources */
if (rec_req->event == QEDF_IOREQ_EV_ELS_TMO)
goto out_put;
/* Normalize response data into struct fc_frame */
mp_req = &(rec_req->mp_req);
mp_fc_hdr = &(mp_req->resp_fc_hdr);
resp_len = mp_req->resp_len;
acc = resp_buf = mp_req->resp_buf;
fp = fc_frame_alloc(lport, resp_len);
if (!fp) {
QEDF_ERR(&(qedf->dbg_ctx),
"fc_frame_alloc failure.\n");
goto out_put;
}
/* Copy frame header from firmware into fp */
fh = (struct fc_frame_header *)fc_frame_header_get(fp);
memcpy(fh, mp_fc_hdr, sizeof(struct fc_frame_header));
/* Copy payload from firmware into fp */
fc_payload = fc_frame_payload_get(fp, resp_len);
memcpy(fc_payload, resp_buf, resp_len);
opcode = fc_frame_payload_op(fp);
if (opcode == ELS_LS_RJT) {
rjt = fc_frame_payload_get(fp, sizeof(*rjt));
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS,
"Received LS_RJT for REC: er_reason=0x%x, "
"er_explan=0x%x.\n", rjt->er_reason, rjt->er_explan);
/*
* The following response(s) mean that we need to reissue the
* request on another exchange. We need to do this without
* informing the upper layers lest it cause an application
* error.
*/
if ((rjt->er_reason == ELS_RJT_LOGIC ||
rjt->er_reason == ELS_RJT_UNAB) &&
rjt->er_explan == ELS_EXPL_OXID_RXID) {
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS,
"Handle CMD LOST case.\n");
qedf_requeue_io_req(orig_io_req);
}
} else if (opcode == ELS_LS_ACC) {
offset = ntohl(acc->reca_fc4value);
e_stat = ntohl(acc->reca_e_stat);
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS,
"Received LS_ACC for REC: offset=0x%x, e_stat=0x%x.\n",
offset, e_stat);
if (e_stat & ESB_ST_SEQ_INIT) {
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS,
"Target has the seq init\n");
goto out_free_frame;
}
sc_cmd = orig_io_req->sc_cmd;
if (!sc_cmd) {
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS,
"sc_cmd is NULL for xid=0x%x.\n",
orig_io_req->xid);
goto out_free_frame;
}
/* SCSI write case */
if (sc_cmd->sc_data_direction == DMA_TO_DEVICE) {
if (offset == orig_io_req->data_xfer_len) {
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS,
"WRITE - response lost.\n");
r_ctl = FC_RCTL_DD_CMD_STATUS;
srr_needed = true;
offset = 0;
} else {
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS,
"WRITE - XFER_RDY/DATA lost.\n");
r_ctl = FC_RCTL_DD_DATA_DESC;
/* Use data from warning CQE instead of REC */
offset = orig_io_req->tx_buf_off;
}
/* SCSI read case */
} else {
if (orig_io_req->rx_buf_off ==
orig_io_req->data_xfer_len) {
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS,
"READ - response lost.\n");
srr_needed = true;
r_ctl = FC_RCTL_DD_CMD_STATUS;
offset = 0;
} else {
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS,
"READ - DATA lost.\n");
/*
* For read case we always set the offset to 0
* for sequence recovery task.
*/
offset = 0;
r_ctl = FC_RCTL_DD_SOL_DATA;
}
}
if (srr_needed)
qedf_send_srr(orig_io_req, offset, r_ctl);
else
qedf_initiate_seq_cleanup(orig_io_req, offset, r_ctl);
}
out_free_frame:
fc_frame_free(fp);
out_put:
/* Put reference for original command since REC completed */
kref_put(&orig_io_req->refcount, qedf_release_cmd);
out_free:
kfree(cb_arg);
}
static void qedf_srr_compl(struct qedf_els_cb_arg *cb_arg)
{
struct qedf_ioreq *orig_io_req;
struct qedf_ioreq *srr_req;
struct qedf_mp_req *mp_req;
struct fc_frame_header *mp_fc_hdr, *fh;
struct fc_frame *fp;
void *resp_buf, *fc_payload;
u32 resp_len;
struct fc_lport *lport;
struct qedf_ctx *qedf;
int refcount;
u8 opcode;
srr_req = cb_arg->io_req;
qedf = srr_req->fcport->qedf;
lport = qedf->lport;
orig_io_req = cb_arg->aborted_io_req;
if (!orig_io_req)
goto out_free;
clear_bit(QEDF_CMD_SRR_SENT, &orig_io_req->flags);
if (srr_req->event != QEDF_IOREQ_EV_ELS_TMO &&
srr_req->event != QEDF_IOREQ_EV_ELS_ERR_DETECT)
cancel_delayed_work_sync(&orig_io_req->timeout_work);
refcount = kref_read(&orig_io_req->refcount);
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, "Entered: orig_io=%p,"
" orig_io_xid=0x%x, rec_xid=0x%x, refcount=%d\n",
orig_io_req, orig_io_req->xid, srr_req->xid, refcount);
/* If a SRR times out, simply free resources */
if (srr_req->event == QEDF_IOREQ_EV_ELS_TMO)
goto out_put;
/* Normalize response data into struct fc_frame */
mp_req = &(srr_req->mp_req);
mp_fc_hdr = &(mp_req->resp_fc_hdr);
resp_len = mp_req->resp_len;
resp_buf = mp_req->resp_buf;
fp = fc_frame_alloc(lport, resp_len);
if (!fp) {
QEDF_ERR(&(qedf->dbg_ctx),
"fc_frame_alloc failure.\n");
goto out_put;
}
/* Copy frame header from firmware into fp */
fh = (struct fc_frame_header *)fc_frame_header_get(fp);
memcpy(fh, mp_fc_hdr, sizeof(struct fc_frame_header));
/* Copy payload from firmware into fp */
fc_payload = fc_frame_payload_get(fp, resp_len);
memcpy(fc_payload, resp_buf, resp_len);
opcode = fc_frame_payload_op(fp);
switch (opcode) {
case ELS_LS_ACC:
QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS,
"SRR success.\n");
break;
case ELS_LS_RJT:
QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_ELS,
"SRR rejected.\n");
qedf_initiate_abts(orig_io_req, true);
break;
}
fc_frame_free(fp);
out_put:
/* Put reference for original command since SRR completed */
kref_put(&orig_io_req->refcount, qedf_release_cmd);
out_free:
kfree(cb_arg);
}
static void fnic_rq_cmpl_frame_recv(struct vnic_rq *rq, struct cq_desc
*cq_desc, struct vnic_rq_buf *buf,
int skipped __attribute__((unused)),
void *opaque)
{
struct fnic *fnic = vnic_dev_priv(rq->vdev);
struct sk_buff *skb;
struct fc_frame *fp;
unsigned int eth_hdrs_stripped;
u8 type, color, eop, sop, ingress_port, vlan_stripped;
u8 fcoe = 0, fcoe_sof, fcoe_eof;
u8 fcoe_fc_crc_ok = 1, fcoe_enc_error = 0;
u8 tcp_udp_csum_ok, udp, tcp, ipv4_csum_ok;
u8 ipv6, ipv4, ipv4_fragment, rss_type, csum_not_calc;
u8 fcs_ok = 1, packet_error = 0;
u16 q_number, completed_index, bytes_written = 0, vlan, checksum;
u32 rss_hash;
u16 exchange_id, tmpl;
u8 sof = 0;
u8 eof = 0;
u32 fcp_bytes_written = 0;
unsigned long flags;
pci_unmap_single(fnic->pdev, buf->dma_addr, buf->len,
PCI_DMA_FROMDEVICE);
skb = buf->os_buf;
buf->os_buf = NULL;
cq_desc_dec(cq_desc, &type, &color, &q_number, &completed_index);
if (type == CQ_DESC_TYPE_RQ_FCP) {
cq_fcp_rq_desc_dec((struct cq_fcp_rq_desc *)cq_desc,
&type, &color, &q_number, &completed_index,
&eop, &sop, &fcoe_fc_crc_ok, &exchange_id,
&tmpl, &fcp_bytes_written, &sof, &eof,
&ingress_port, &packet_error,
&fcoe_enc_error, &fcs_ok, &vlan_stripped,
&vlan);
eth_hdrs_stripped = 1;
} else if (type == CQ_DESC_TYPE_RQ_ENET) {
cq_enet_rq_desc_dec((struct cq_enet_rq_desc *)cq_desc,
&type, &color, &q_number, &completed_index,
&ingress_port, &fcoe, &eop, &sop,
&rss_type, &csum_not_calc, &rss_hash,
&bytes_written, &packet_error,
&vlan_stripped, &vlan, &checksum,
&fcoe_sof, &fcoe_fc_crc_ok,
&fcoe_enc_error, &fcoe_eof,
&tcp_udp_csum_ok, &udp, &tcp,
&ipv4_csum_ok, &ipv6, &ipv4,
&ipv4_fragment, &fcs_ok);
eth_hdrs_stripped = 0;
} else {
/* wrong CQ type*/
shost_printk(KERN_ERR, fnic->lport->host,
"fnic rq_cmpl wrong cq type x%x\n", type);
goto drop;
}
if (!fcs_ok || packet_error || !fcoe_fc_crc_ok || fcoe_enc_error) {
FNIC_FCS_DBG(KERN_DEBUG, fnic->lport->host,
"fnic rq_cmpl fcoe x%x fcsok x%x"
" pkterr x%x fcoe_fc_crc_ok x%x, fcoe_enc_err"
" x%x\n",
fcoe, fcs_ok, packet_error,
fcoe_fc_crc_ok, fcoe_enc_error);
goto drop;
}
if (eth_hdrs_stripped)
fnic_import_rq_fc_frame(skb, fcp_bytes_written, sof, eof);
else if (fnic_import_rq_eth_pkt(skb, bytes_written))
goto drop;
fp = (struct fc_frame *)skb;
/*
* If frame is an ELS response that matches the cached FLOGI OX_ID,
* and is accept, issue flogi_reg_request copy wq request to firmware
* to register the S_ID and determine whether FC_OUI mode or GW mode.
*/
if (is_matching_flogi_resp_frame(fnic, fp)) {
if (!eth_hdrs_stripped) {
if (fc_frame_payload_op(fp) == ELS_LS_ACC) {
fnic_handle_flogi_resp(fnic, fp);
return;
}
/*
* Recd. Flogi reject. No point registering
* with fw, but forward to libFC
*/
goto forward;
}
goto drop;
}
if (!eth_hdrs_stripped)
goto drop;
forward:
spin_lock_irqsave(&fnic->fnic_lock, flags);
if (fnic->stop_rx_link_events) {
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
goto drop;
}
/* Use fr_flags to indicate whether succ. flogi resp or not */
fr_flags(fp) = 0;
fr_dev(fp) = fnic->lport;
spin_unlock_irqrestore(&fnic->fnic_lock, flags);
skb_queue_tail(&fnic->frame_queue, skb);
queue_work(fnic_event_queue, &fnic->frame_work);
return;
drop:
dev_kfree_skb_irq(skb);
}