[PATCH 10/17] libfcoe: update FIP FCF D flag from advertisments

Robert Love
2010-06-11T23:44:21Z

From: Joe Eykholt <jeykholt@cisco.com>

Allow the D flag (indicating that keep-alives are not needed) to
be updated dynamically from received FIP advertisements.

Signed-off-by: Joe Eykholt <jeykholt@cisco.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
---
drivers/scsi/fcoe/libfcoe.c | 15 +++++++++------
1 files changed, 9 insertions(+), 6 deletions(-)

diff --git a/drivers/scsi/fcoe/libfcoe.c b/drivers/scsi/fcoe/libfcoe.c
index 4893098..27c21ca 100644
--- a/drivers/scsi/fcoe/libfcoe.c
+++ b/drivers/scsi/fcoe/libfcoe.c
@@ -769,18 +769,21 @@ static void fcoe_ctlr_recv_adv(struct fcoe_ctlr *fip, struct sk_buff *skb)
list_add(&fcf->list, &fip->fcfs);
} else {
/*
- * Flags in advertisements are ignored once the FCF is
- * selected. Flags in unsolicited advertisements are
- * ignored after a usable solicited advertisement
- * has been received.
+ * Update the FCF's keep-alive descriptor flags.
+ * Other flag changes from new advertisements are
+ * ignored after a solicited advertisement is
+ * received and the FCF is selectable (usable).
*/
+ fcf->fd_flags = new.fd_flags;
+ if (!fcoe_ctlr_fcf_usable(fcf))
+ fcf->flags = new.flags;
+
if (fcf == fip->sel_fcf && !fcf->fd_flags) {
fip->ctlr_ka_time -= fcf->fka_period;
fip->ctlr_ka_time += new.fka_period;
if (time_before(fip->ctlr_ka_time, fip->timer.expires))
mod_timer(&fip->timer, fip->ctlr_ka_time);
- } else if (!fcoe_ctlr_fcf_usable(fcf))
- fcf->flags = new.flags;
+ }
fcf->fka_period = new.fka_period;
memcpy(fcf->fcf_mac, new.fcf_mac, ETH_ALEN);
}