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Diffstat (limited to 'net')
-rw-r--r--net/ipv4/tcp_input.c78
-rw-r--r--net/mac80211/rx.c7
-rw-r--r--net/rfkill/rfkill.c2
-rw-r--r--net/sched/sch_api.c3
4 files changed, 58 insertions, 32 deletions
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index 5119856017ab..bbb7d88a16b4 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -3841,8 +3841,28 @@ static void tcp_ofo_queue(struct sock *sk)
}
}
+static int tcp_prune_ofo_queue(struct sock *sk);
static int tcp_prune_queue(struct sock *sk);
+static inline int tcp_try_rmem_schedule(struct sock *sk, unsigned int size)
+{
+ if (atomic_read(&sk->sk_rmem_alloc) > sk->sk_rcvbuf ||
+ !sk_rmem_schedule(sk, size)) {
+
+ if (tcp_prune_queue(sk) < 0)
+ return -1;
+
+ if (!sk_rmem_schedule(sk, size)) {
+ if (!tcp_prune_ofo_queue(sk))
+ return -1;
+
+ if (!sk_rmem_schedule(sk, size))
+ return -1;
+ }
+ }
+ return 0;
+}
+
static void tcp_data_queue(struct sock *sk, struct sk_buff *skb)
{
struct tcphdr *th = tcp_hdr(skb);
@@ -3892,12 +3912,9 @@ static void tcp_data_queue(struct sock *sk, struct sk_buff *skb)
if (eaten <= 0) {
queue_and_out:
if (eaten < 0 &&
- (atomic_read(&sk->sk_rmem_alloc) > sk->sk_rcvbuf ||
- !sk_rmem_schedule(sk, skb->truesize))) {
- if (tcp_prune_queue(sk) < 0 ||
- !sk_rmem_schedule(sk, skb->truesize))
- goto drop;
- }
+ tcp_try_rmem_schedule(sk, skb->truesize))
+ goto drop;
+
skb_set_owner_r(skb, sk);
__skb_queue_tail(&sk->sk_receive_queue, skb);
}
@@ -3966,12 +3983,8 @@ drop:
TCP_ECN_check_ce(tp, skb);
- if (atomic_read(&sk->sk_rmem_alloc) > sk->sk_rcvbuf ||
- !sk_rmem_schedule(sk, skb->truesize)) {
- if (tcp_prune_queue(sk) < 0 ||
- !sk_rmem_schedule(sk, skb->truesize))
- goto drop;
- }
+ if (tcp_try_rmem_schedule(sk, skb->truesize))
+ goto drop;
/* Disable header prediction. */
tp->pred_flags = 0;
@@ -4198,6 +4211,32 @@ static void tcp_collapse_ofo_queue(struct sock *sk)
}
}
+/*
+ * Purge the out-of-order queue.
+ * Return true if queue was pruned.
+ */
+static int tcp_prune_ofo_queue(struct sock *sk)
+{
+ struct tcp_sock *tp = tcp_sk(sk);
+ int res = 0;
+
+ if (!skb_queue_empty(&tp->out_of_order_queue)) {
+ NET_INC_STATS_BH(LINUX_MIB_OFOPRUNED);
+ __skb_queue_purge(&tp->out_of_order_queue);
+
+ /* Reset SACK state. A conforming SACK implementation will
+ * do the same at a timeout based retransmit. When a connection
+ * is in a sad state like this, we care only about integrity
+ * of the connection not performance.
+ */
+ if (tp->rx_opt.sack_ok)
+ tcp_sack_reset(&tp->rx_opt);
+ sk_mem_reclaim(sk);
+ res = 1;
+ }
+ return res;
+}
+
/* Reduce allocated memory if we can, trying to get
* the socket within its memory limits again.
*
@@ -4231,20 +4270,7 @@ static int tcp_prune_queue(struct sock *sk)
/* Collapsing did not help, destructive actions follow.
* This must not ever occur. */
- /* First, purge the out_of_order queue. */
- if (!skb_queue_empty(&tp->out_of_order_queue)) {
- NET_INC_STATS_BH(LINUX_MIB_OFOPRUNED);
- __skb_queue_purge(&tp->out_of_order_queue);
-
- /* Reset SACK state. A conforming SACK implementation will
- * do the same at a timeout based retransmit. When a connection
- * is in a sad state like this, we care only about integrity
- * of the connection not performance.
- */
- if (tcp_is_sack(tp))
- tcp_sack_reset(&tp->rx_opt);
- sk_mem_reclaim(sk);
- }
+ tcp_prune_ofo_queue(sk);
if (atomic_read(&sk->sk_rmem_alloc) <= sk->sk_rcvbuf)
return 0;
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 535407d07fa4..a8a40aba846b 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -1050,12 +1050,9 @@ ieee80211_drop_unencrypted(struct ieee80211_txrx_data *rx)
if (unlikely(!(rx->fc & IEEE80211_FCTL_PROTECTED) &&
(rx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA &&
(rx->fc & IEEE80211_FCTL_STYPE) != IEEE80211_STYPE_NULLFUNC &&
- (rx->key || rx->sdata->drop_unencrypted))) {
- if (net_ratelimit())
- printk(KERN_DEBUG "%s: RX non-WEP frame, but expected "
- "encryption\n", rx->dev->name);
+ (rx->key || rx->sdata->drop_unencrypted)))
return -EACCES;
- }
+
return 0;
}
diff --git a/net/rfkill/rfkill.c b/net/rfkill/rfkill.c
index 140a0a8c6b02..4e10a95de832 100644
--- a/net/rfkill/rfkill.c
+++ b/net/rfkill/rfkill.c
@@ -92,7 +92,7 @@ void rfkill_switch_all(enum rfkill_type type, enum rfkill_state state)
rfkill_states[type] = state;
list_for_each_entry(rfkill, &rfkill_list, node) {
- if (!rfkill->user_claim)
+ if ((!rfkill->user_claim) && (rfkill->type == type))
rfkill_toggle_radio(rfkill, state);
}
diff --git a/net/sched/sch_api.c b/net/sched/sch_api.c
index 7e3c048ba9b1..fc8708a0a25e 100644
--- a/net/sched/sch_api.c
+++ b/net/sched/sch_api.c
@@ -386,6 +386,9 @@ void qdisc_tree_decrease_qlen(struct Qdisc *sch, unsigned int n)
if (n == 0)
return;
while ((parentid = sch->parent)) {
+ if (TC_H_MAJ(parentid) == TC_H_MAJ(TC_H_INGRESS))
+ return;
+
sch = qdisc_lookup(sch->dev, TC_H_MAJ(parentid));
if (sch == NULL) {
WARN_ON(parentid != TC_H_ROOT);