From d99ee45b7cb89803b79745dc3014ba64bfd02b7d Mon Sep 17 00:00:00 2001 From: Joe Eykholt Date: Fri, 11 Jun 2010 16:44:15 -0700 Subject: [PATCH] [SCSI] libfcoe: Use fka_period as periodic timeouts to age out fcf if keep alives are disabled due to fd_flags set and also stop updating keep alive values in that case. Update select fcf time only if fcf is not already selected or select time is not already determined from parse adv, and then have select time cleared only once after fcf is selected. Changed deadline check to time_after_eq() from time_after() since now next timeout will be on exact 2.5 times FKA followed by first advertisement. Signed-off-by: Vasu Dev Signed-off-by: Joe Eykholt Signed-off-by: Robert Love Signed-off-by: James Bottomley --- drivers/scsi/fcoe/libfcoe.c | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) diff --git a/drivers/scsi/fcoe/libfcoe.c b/drivers/scsi/fcoe/libfcoe.c index 3ab3db3..4893098 100644 --- a/drivers/scsi/fcoe/libfcoe.c +++ b/drivers/scsi/fcoe/libfcoe.c @@ -594,7 +594,7 @@ static unsigned long fcoe_ctlr_age_fcfs(struct fcoe_ctlr *fip) } deadline += fcf->fka_period; - if (time_after(jiffies, deadline)) { + if (time_after_eq(jiffies, deadline)) { if (fip->sel_fcf == fcf) fip->sel_fcf = NULL; list_del(&fcf->list); @@ -612,12 +612,11 @@ static unsigned long fcoe_ctlr_age_fcfs(struct fcoe_ctlr *fip) sel_time = fcf->time; } } - if (sel_time) { + if (sel_time && !fip->sel_fcf && !fip->sel_time) { sel_time += msecs_to_jiffies(FCOE_CTLR_START_DELAY); fip->sel_time = sel_time; - } else { - fip->sel_time = 0; } + return next_timer; } @@ -775,7 +774,7 @@ static void fcoe_ctlr_recv_adv(struct fcoe_ctlr *fip, struct sk_buff *skb) * ignored after a usable solicited advertisement * has been received. */ - if (fcf == fip->sel_fcf) { + 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)) @@ -813,7 +812,7 @@ static void fcoe_ctlr_recv_adv(struct fcoe_ctlr *fip, struct sk_buff *skb) * If this is the first validated FCF, note the time and * set a timer to trigger selection. */ - if (mtu_valid && !fip->sel_time && fcoe_ctlr_fcf_usable(fcf)) { + if (mtu_valid && !fip->sel_fcf && fcoe_ctlr_fcf_usable(fcf)) { fip->sel_time = jiffies + msecs_to_jiffies(FCOE_CTLR_START_DELAY); if (!timer_pending(&fip->timer) || @@ -1187,6 +1186,8 @@ static void fcoe_ctlr_timeout(unsigned long arg) fip->port_ka_time = jiffies + msecs_to_jiffies(FIP_VN_KA_PERIOD); fip->ctlr_ka_time = jiffies + sel->fka_period; + if (time_after(next_timer, fip->ctlr_ka_time)) + next_timer = fip->ctlr_ka_time; } else { printk(KERN_NOTICE "libfcoe: host%d: " "FIP Fibre-Channel Forwarder timed out. " -- 2.7.4