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Diffstat (limited to 'net')
-rw-r--r--net/ipv4/tcp_minisocks.c1
-rw-r--r--net/ipv4/udp.c73
-rw-r--r--net/mac80211/ibss.c4
-rw-r--r--net/mac80211/rx.c2
-rw-r--r--net/sched/act_pedit.c2
5 files changed, 49 insertions, 33 deletions
diff --git a/net/ipv4/tcp_minisocks.c b/net/ipv4/tcp_minisocks.c
index 624c3c9b3c2b..e320afea07fc 100644
--- a/net/ipv4/tcp_minisocks.c
+++ b/net/ipv4/tcp_minisocks.c
@@ -644,6 +644,7 @@ struct sock *tcp_check_req(struct sock *sk, struct sk_buff *skb,
/* If TCP_DEFER_ACCEPT is set, drop bare ACK. */
if (inet_csk(sk)->icsk_accept_queue.rskq_defer_accept &&
TCP_SKB_CB(skb)->end_seq == tcp_rsk(req)->rcv_isn + 1) {
+ inet_csk(sk)->icsk_accept_queue.rskq_defer_accept--;
inet_rsk(req)->acked = 1;
return NULL;
}
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 71e5353b30c8..ee61b3fc4cae 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -845,6 +845,42 @@ out:
return ret;
}
+
+/**
+ * first_packet_length - return length of first packet in receive queue
+ * @sk: socket
+ *
+ * Drops all bad checksum frames, until a valid one is found.
+ * Returns the length of found skb, or 0 if none is found.
+ */
+static unsigned int first_packet_length(struct sock *sk)
+{
+ struct sk_buff_head list_kill, *rcvq = &sk->sk_receive_queue;
+ struct sk_buff *skb;
+ unsigned int res;
+
+ __skb_queue_head_init(&list_kill);
+
+ spin_lock_bh(&rcvq->lock);
+ while ((skb = skb_peek(rcvq)) != NULL &&
+ udp_lib_checksum_complete(skb)) {
+ UDP_INC_STATS_BH(sock_net(sk), UDP_MIB_INERRORS,
+ IS_UDPLITE(sk));
+ __skb_unlink(skb, rcvq);
+ __skb_queue_tail(&list_kill, skb);
+ }
+ res = skb ? skb->len : 0;
+ spin_unlock_bh(&rcvq->lock);
+
+ if (!skb_queue_empty(&list_kill)) {
+ lock_sock(sk);
+ __skb_queue_purge(&list_kill);
+ sk_mem_reclaim_partial(sk);
+ release_sock(sk);
+ }
+ return res;
+}
+
/*
* IOCTL requests applicable to the UDP protocol
*/
@@ -861,21 +897,16 @@ int udp_ioctl(struct sock *sk, int cmd, unsigned long arg)
case SIOCINQ:
{
- struct sk_buff *skb;
- unsigned long amount;
+ unsigned int amount = first_packet_length(sk);
- amount = 0;
- spin_lock_bh(&sk->sk_receive_queue.lock);
- skb = skb_peek(&sk->sk_receive_queue);
- if (skb != NULL) {
+ if (amount)
/*
* We will only return the amount
* of this packet since that is all
* that will be read.
*/
- amount = skb->len - sizeof(struct udphdr);
- }
- spin_unlock_bh(&sk->sk_receive_queue.lock);
+ amount -= sizeof(struct udphdr);
+
return put_user(amount, (int __user *)arg);
}
@@ -1544,29 +1575,11 @@ unsigned int udp_poll(struct file *file, struct socket *sock, poll_table *wait)
{
unsigned int mask = datagram_poll(file, sock, wait);
struct sock *sk = sock->sk;
- int is_lite = IS_UDPLITE(sk);
/* Check for false positives due to checksum errors */
- if ((mask & POLLRDNORM) &&
- !(file->f_flags & O_NONBLOCK) &&
- !(sk->sk_shutdown & RCV_SHUTDOWN)) {
- struct sk_buff_head *rcvq = &sk->sk_receive_queue;
- struct sk_buff *skb;
-
- spin_lock_bh(&rcvq->lock);
- while ((skb = skb_peek(rcvq)) != NULL &&
- udp_lib_checksum_complete(skb)) {
- UDP_INC_STATS_BH(sock_net(sk),
- UDP_MIB_INERRORS, is_lite);
- __skb_unlink(skb, rcvq);
- kfree_skb(skb);
- }
- spin_unlock_bh(&rcvq->lock);
-
- /* nothing to see, move along */
- if (skb == NULL)
- mask &= ~(POLLIN | POLLRDNORM);
- }
+ if ((mask & POLLRDNORM) && !(file->f_flags & O_NONBLOCK) &&
+ !(sk->sk_shutdown & RCV_SHUTDOWN) && !first_packet_length(sk))
+ mask &= ~(POLLIN | POLLRDNORM);
return mask;
diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c
index 920ec8792f4b..6eaf69823439 100644
--- a/net/mac80211/ibss.c
+++ b/net/mac80211/ibss.c
@@ -544,7 +544,7 @@ static void ieee80211_sta_find_ibss(struct ieee80211_sub_if_data *sdata)
"%pM\n", bss->cbss.bssid, ifibss->bssid);
#endif /* CONFIG_MAC80211_IBSS_DEBUG */
- if (bss && memcmp(ifibss->bssid, bss->cbss.bssid, ETH_ALEN)) {
+ if (bss && !memcmp(ifibss->bssid, bss->cbss.bssid, ETH_ALEN)) {
printk(KERN_DEBUG "%s: Selected IBSS BSSID %pM"
" based on configured SSID\n",
sdata->dev->name, bss->cbss.bssid);
@@ -829,7 +829,7 @@ void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local)
if (!sdata->u.ibss.ssid_len)
continue;
sdata->u.ibss.last_scan_completed = jiffies;
- ieee80211_sta_find_ibss(sdata);
+ mod_timer(&sdata->u.ibss.timer, 0);
}
mutex_unlock(&local->iflist_mtx);
}
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 865fbc09be1a..7170bf4565a8 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -2453,6 +2453,8 @@ void ieee80211_rx(struct ieee80211_hw *hw, struct sk_buff *skb)
struct ieee80211_supported_band *sband;
struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(skb);
+ WARN_ON_ONCE(softirq_count() == 0);
+
if (WARN_ON(status->band < 0 ||
status->band >= IEEE80211_NUM_BANDS))
goto drop;
diff --git a/net/sched/act_pedit.c b/net/sched/act_pedit.c
index 96c0ed115e2a..6b0359a500e6 100644
--- a/net/sched/act_pedit.c
+++ b/net/sched/act_pedit.c
@@ -34,7 +34,7 @@ static struct tcf_hashinfo pedit_hash_info = {
};
static const struct nla_policy pedit_policy[TCA_PEDIT_MAX + 1] = {
- [TCA_PEDIT_PARMS] = { .len = sizeof(struct tcf_pedit) },
+ [TCA_PEDIT_PARMS] = { .len = sizeof(struct tc_pedit) },
};
static int tcf_pedit_init(struct nlattr *nla, struct nlattr *est,