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[SCSI] libfcoe: update FIP FCF D flag from advertisments

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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>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This commit is contained in:
Joe Eykholt 2010-06-11 16:44:20 -07:00 committed by James Bottomley
parent d99ee45b7c
commit c600fea2d8
1 changed files with 9 additions and 6 deletions
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15
drivers/scsi/fcoe/libfcoe.c
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@ -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);
}