[SCSI] libfcoe: fcoe: simplify receive FLOGI response
There was a locking problem where the fip->lock was held during
the call to update_mac(). The rtnl_lock() must be taken before
the fip->lock, not the other way around. This fixes that.
Now that fcoe_ctlr_recv_flog() is called only from the response handler
to a FLOGI request, some checking can be eliminated. Instead of calling
update_mac(), just fill in the granted_mac address for the passed-in
frame (skb).
Eliminate the passed-in source MAC address since it is also in the skb.
Also, in fcoe, call fcoe_set_src_mac() directly instead of going thru
the fip function pointer. This will generate less code.
Then, since fip isn't needed for LOGO response, use lport as the arg.
Signed-off-by: Joe Eykholt <jeykholt@cisco.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
diff --git a/drivers/scsi/fcoe/fcoe.c b/drivers/scsi/fcoe/fcoe.c
index b15ec99..343900a 100644
--- a/drivers/scsi/fcoe/fcoe.c
+++ b/drivers/scsi/fcoe/fcoe.c
@@ -2247,15 +2247,12 @@
mac = fr_cb(fp)->granted_mac;
if (is_zero_ether_addr(mac)) {
/* pre-FIP */
- mac = eth_hdr(&fp->skb)->h_source;
- if (fcoe_ctlr_recv_flogi(fip, lport, fp, mac)) {
+ if (fcoe_ctlr_recv_flogi(fip, lport, fp)) {
fc_frame_free(fp);
return;
}
- } else {
- /* FIP, libfcoe has already seen it */
- fip->update_mac(lport, fr_cb(fp)->granted_mac);
}
+ fcoe_update_src_mac(lport, mac);
done:
fc_lport_flogi_resp(seq, fp, lport);
}
@@ -2271,13 +2268,11 @@
*/
static void fcoe_logo_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;
+ struct fc_lport *lport = arg;
static u8 zero_mac[ETH_ALEN] = { 0 };
if (!IS_ERR(fp))
- fip->update_mac(lport, zero_mac);
+ fcoe_update_src_mac(lport, zero_mac);
fc_lport_logo_resp(seq, fp, lport);
}
@@ -2312,7 +2307,7 @@
if (ntoh24(fh->fh_d_id) != FC_FID_FLOGI)
break;
return fc_elsct_send(lport, did, fp, op, fcoe_logo_resp,
- fip, timeout);
+ lport, timeout);
}
return fc_elsct_send(lport, did, fp, op, resp, arg, timeout);
}