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| author | Andreas Eversberg <andreas@eversberg.eu> | 2008-08-06 19:13:07 +0200 |
|---|---|---|
| committer | Karsten Keil <kkeil@suse.de> | 2009-01-09 22:44:23 +0100 |
| commit | 11618496d03d9e1ad70ac68afbfa7df9b5fc19d1 (patch) | |
| tree | f52f3a4e49c53a87803c803413310c4710859d05 /drivers/isdn | |
| parent | 190f71d9d8516fea4db01ba86ddfad5738a92703 (diff) | |
| download | linux-11618496d03d9e1ad70ac68afbfa7df9b5fc19d1.tar.bz2 | |
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>
Diffstat (limited to 'drivers/isdn')
| -rw-r--r-- | drivers/isdn/mISDN/hwchannel.c | 23 |
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) { |