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Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6

Browse source 
* 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6:
  [NET]: rt_check_expire() can take a long time, add a cond_resched()
  [ISDN] sc: Really, really fix warning
  [ISDN] sc: Fix sndpkt to have the correct number of arguments
  [TCP] FRTO: Clear frto_highmark only after process_frto that uses it
  [NET]: Remove notifier block from chain when register_netdevice_notifier fails
  [FS_ENET]: Fix module build.
  [TCP]: Make sure write_queue_from does not begin with NULL ptr
  [TCP]: Fix size calculation in sk_stream_alloc_pskb
  [S2IO]: Fixed memory leak when MSI-X vector allocation fails
  [BONDING]: Fix resource use after free
  [SYSCTL]: Fix warning for token-ring from sysctl checker
  [NET] random : secure_tcp_sequence_number should not assume CONFIG_KTIME_SCALAR
  [IWLWIFI]: Not correctly dealing with hotunplug.
  [TCP] FRTO: Plug potential LOST-bit leak
  [TCP] FRTO: Limit snd_cwnd if TCP was application limited
  [E1000]: Fix schedule while atomic when called from mii-tool.
  [NETX]: Fix build failure added by 2.6.24 statistics cleanup.
  [EP93xx_ETH]: Build fix after 2.6.24 NAPI changes.
  [PKT_SCHED]: Check subqueue status before calling hard_start_xmit
This commit is contained in:
Linus Torvalds 2007-11-14 18:51:48 -08:00
commit 6f37ac793d
18 changed files with 118 additions and 96 deletions
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2
net/core/dev.c
View file

@ -1171,6 +1171,8 @@ rollback:
nb->notifier_call(nb, NETDEV_UNREGISTER, dev);
}
}
raw_notifier_chain_unregister(&netdev_chain, nb);
goto unlock;
}

3
net/ipv4/route.c
View file

@ -578,6 +578,9 @@ static void rt_check_expire(struct work_struct *work)
i = (i + 1) & rt_hash_mask;
rthp = &rt_hash_table[i].chain;
if (need_resched())
cond_resched();
if (*rthp == NULL)
continue;
spin_lock_bh(rt_hash_lock_addr(i));

16
net/ipv4/tcp_input.c
View file

@ -1269,6 +1269,9 @@ tcp_sacktag_write_queue(struct sock *sk, struct sk_buff *ack_skb, u32 prior_snd_
if (before(TCP_SKB_CB(ack_skb)->ack_seq, prior_snd_una - tp->max_window))
return 0;
if (!tp->packets_out)
goto out;
/* SACK fastpath:
* if the only SACK change is the increase of the end_seq of
* the first block then only apply that SACK block
@ -1515,6 +1518,8 @@ tcp_sacktag_write_queue(struct sock *sk, struct sk_buff *ack_skb, u32 prior_snd_
(!tp->frto_highmark || after(tp->snd_una, tp->frto_highmark)))
tcp_update_reordering(sk, tp->fackets_out - reord, 0);
out:
#if FASTRETRANS_DEBUG > 0
BUG_TRAP((int)tp->sacked_out >= 0);
BUG_TRAP((int)tp->lost_out >= 0);
@ -1669,6 +1674,9 @@ void tcp_enter_frto(struct sock *sk)
}
tcp_verify_left_out(tp);
/* Too bad if TCP was application limited */
tp->snd_cwnd = min(tp->snd_cwnd, tcp_packets_in_flight(tp) + 1);
/* Earlier loss recovery underway (see RFC4138; Appendix B).
* The last condition is necessary at least in tp->frto_counter case.
*/
@ -1701,6 +1709,8 @@ static void tcp_enter_frto_loss(struct sock *sk, int allowed_segments, int flag)
tcp_for_write_queue(skb, sk) {
if (skb == tcp_send_head(sk))
break;
TCP_SKB_CB(skb)->sacked &= ~TCPCB_LOST;
/*
* Count the retransmission made on RTO correctly (only when
* waiting for the first ACK and did not get it)...
@ -1714,7 +1724,7 @@ static void tcp_enter_frto_loss(struct sock *sk, int allowed_segments, int flag)
} else {
if (TCP_SKB_CB(skb)->sacked & TCPCB_RETRANS)
tp->undo_marker = 0;
TCP_SKB_CB(skb)->sacked &= ~(TCPCB_LOST|TCPCB_SACKED_RETRANS);
TCP_SKB_CB(skb)->sacked &= ~TCPCB_SACKED_RETRANS;
}
/* Don't lost mark skbs that were fwd transmitted after RTO */
@ -3103,11 +3113,11 @@ static int tcp_ack(struct sock *sk, struct sk_buff *skb, int flag)
/* See if we can take anything off of the retransmit queue. */
flag |= tcp_clean_rtx_queue(sk, &seq_rtt, prior_fackets);
if (tp->frto_counter)
frto_cwnd = tcp_process_frto(sk, flag);
/* Guarantee sacktag reordering detection against wrap-arounds */
if (before(tp->frto_highmark, tp->snd_una))
tp->frto_highmark = 0;
if (tp->frto_counter)
frto_cwnd = tcp_process_frto(sk, flag);
if (tcp_ack_is_dubious(sk, flag)) {
/* Advance CWND, if state allows this. */

5
net/sched/sch_generic.c
View file

@ -134,7 +134,7 @@ static inline int qdisc_restart(struct net_device *dev)
{
struct Qdisc *q = dev->qdisc;
struct sk_buff *skb;
int ret;
int ret = NETDEV_TX_BUSY;
/* Dequeue packet */
if (unlikely((skb = dev_dequeue_skb(dev, q)) == NULL))
@ -145,7 +145,8 @@ static inline int qdisc_restart(struct net_device *dev)
spin_unlock(&dev->queue_lock);
HARD_TX_LOCK(dev, smp_processor_id());
ret = dev_hard_start_xmit(skb, dev);
if (!netif_subqueue_stopped(dev, skb))
ret = dev_hard_start_xmit(skb, dev);
HARD_TX_UNLOCK(dev);
spin_lock(&dev->queue_lock);