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authorAndreas Eversberg <andreas@eversberg.eu>2008-08-06 19:13:07 +0200
committerKarsten Keil <kkeil@suse.de>2009-01-09 22:44:23 +0100
commit11618496d03d9e1ad70ac68afbfa7df9b5fc19d1 (patch)
treef52f3a4e49c53a87803c803413310c4710859d05
parent190f71d9d8516fea4db01ba86ddfad5738a92703 (diff)
downloadlinux-stericsson-11618496d03d9e1ad70ac68afbfa7df9b5fc19d1.tar.gz
mISDN: Fix queue limit counting problem
If received frames are not handled in time, purge them. Signed-off-by: Andreas Eversberg <andreas@eversberg.eu> Signed-off-by: Karsten Keil <kkeil@suse.de>
-rw-r--r--drivers/isdn/mISDN/hwchannel.c23
1 files changed, 14 insertions, 9 deletions
diff --git a/drivers/isdn/mISDN/hwchannel.c b/drivers/isdn/mISDN/hwchannel.c
index 2596fba4e614..535ceacc05b9 100644
--- a/drivers/isdn/mISDN/hwchannel.c
+++ b/drivers/isdn/mISDN/hwchannel.c
@@ -50,9 +50,6 @@ bchannel_bh(struct work_struct *ws)
if (test_and_clear_bit(FLG_RECVQUEUE, &bch->Flags)) {
while ((skb = skb_dequeue(&bch->rqueue))) {
- if (bch->rcount >= 64)
- printk(KERN_WARNING "B-channel %p receive "
- "queue if full, but empties...\n", bch);
bch->rcount--;
if (likely(bch->ch.peer)) {
err = bch->ch.recv(bch->ch.peer, skb);
@@ -177,8 +174,10 @@ recv_Bchannel(struct bchannel *bch)
hh->prim = PH_DATA_IND;
hh->id = MISDN_ID_ANY;
if (bch->rcount >= 64) {
- dev_kfree_skb(bch->rx_skb);
- bch->rx_skb = NULL;
+ printk(KERN_WARNING "B-channel %p receive queue overflow, "
+ "fushing!\n", bch);
+ skb_queue_purge(&bch->rqueue);
+ bch->rcount = 0;
return;
}
bch->rcount++;
@@ -200,8 +199,10 @@ void
recv_Bchannel_skb(struct bchannel *bch, struct sk_buff *skb)
{
if (bch->rcount >= 64) {
- dev_kfree_skb(skb);
- return;
+ printk(KERN_WARNING "B-channel %p receive queue overflow, "
+ "fushing!\n", bch);
+ skb_queue_purge(&bch->rqueue);
+ bch->rcount = 0;
}
bch->rcount++;
skb_queue_tail(&bch->rqueue, skb);
@@ -245,8 +246,12 @@ confirm_Bsend(struct bchannel *bch)
{
struct sk_buff *skb;
- if (bch->rcount >= 64)
- return;
+ if (bch->rcount >= 64) {
+ printk(KERN_WARNING "B-channel %p receive queue overflow, "
+ "fushing!\n", bch);
+ skb_queue_purge(&bch->rqueue);
+ bch->rcount = 0;
+ }
skb = _alloc_mISDN_skb(PH_DATA_CNF, mISDN_HEAD_ID(bch->tx_skb),
0, NULL, GFP_ATOMIC);
if (!skb) {