diff options
| author | ecashin@coraid.com <ecashin@coraid.com> | 2005-04-18 22:00:22 -0700 |
|---|---|---|
| committer | Greg KH <greg@press.kroah.org> | 2005-04-18 22:00:22 -0700 |
| commit | a4b38364093bf2094ff858ad45f490521bb87984 (patch) | |
| tree | 474c8d5acc153eb1736c9a76be0973a32e5995f8 /drivers/block/aoe/aoecmd.c | |
| parent | 0c6f0e7920f39b28bdbe5f134f3e592542332d87 (diff) | |
| download | blackbird-op-linux-a4b38364093bf2094ff858ad45f490521bb87984.tar.gz blackbird-op-linux-a4b38364093bf2094ff858ad45f490521bb87984.zip | |
[PATCH] aoe 12/12: send outgoing packets in order
I can't use list.h, since sk_buff doesn't have a list_head but instead
has two struct sk_buff pointers, and I want to avoid any extra memory
allocation.
send outgoing packets in order
Signed-off-by: Ed L. Cashin <ecashin@coraid.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/block/aoe/aoecmd.c')
| -rw-r--r-- | drivers/block/aoe/aoecmd.c | 26 |
1 files changed, 17 insertions, 9 deletions
diff --git a/drivers/block/aoe/aoecmd.c b/drivers/block/aoe/aoecmd.c index 60beb8db4612..b5be4b7d7b5b 100644 --- a/drivers/block/aoe/aoecmd.c +++ b/drivers/block/aoe/aoecmd.c @@ -178,8 +178,12 @@ aoecmd_ata_rw(struct aoedev *d, struct frame *f) skb = skb_prepare(d, f); if (skb) { - skb->next = d->skblist; - d->skblist = skb; + skb->next = NULL; + if (d->sendq_hd) + d->sendq_tl->next = skb; + else + d->sendq_hd = skb; + d->sendq_tl = skb; } } @@ -227,8 +231,12 @@ rexmit(struct aoedev *d, struct frame *f) skb = skb_prepare(d, f); if (skb) { - skb->next = d->skblist; - d->skblist = skb; + skb->next = NULL; + if (d->sendq_hd) + d->sendq_tl->next = skb; + else + d->sendq_hd = skb; + d->sendq_tl = skb; } } @@ -280,8 +288,8 @@ tdie: spin_unlock_irqrestore(&d->lock, flags); } } - sl = d->skblist; - d->skblist = NULL; + sl = d->sendq_hd; + d->sendq_hd = d->sendq_tl = NULL; if (sl) { n = d->rttavg <<= 1; if (n > MAXTIMER) @@ -481,8 +489,8 @@ aoecmd_ata_rsp(struct sk_buff *skb) aoecmd_work(d); - sl = d->skblist; - d->skblist = NULL; + sl = d->sendq_hd; + d->sendq_hd = d->sendq_tl = NULL; spin_unlock_irqrestore(&d->lock, flags); @@ -531,7 +539,7 @@ aoecmd_cfg(ushort aoemajor, unsigned char aoeminor) /* * Since we only call this in one place (and it only prepares one frame) - * we just return the skb. Usually we'd chain it up to the d->skblist. + * we just return the skb. Usually we'd chain it up to the aoedev sendq. */ static struct sk_buff * aoecmd_ata_id(struct aoedev *d) |
