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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-08 16:58:07 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-08 16:58:07 +0000
commit5a6d13c86f2fe6304450e907fc1d8d72da82efef (patch)
tree1bd4e8854203c575eabaa99e2c509f8886065733 /net/phonet
parentAdding upstream version 6.1.76. (diff)
downloadlinux-5a6d13c86f2fe6304450e907fc1d8d72da82efef.tar.xz
linux-5a6d13c86f2fe6304450e907fc1d8d72da82efef.zip
Adding upstream version 6.1.82.upstream/6.1.82upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r--net/phonet/datagram.c4
-rw-r--r--net/phonet/pep.c41
2 files changed, 34 insertions, 11 deletions
diff --git a/net/phonet/datagram.c b/net/phonet/datagram.c
index ff5f49ab2..39a6c5713 100644
--- a/net/phonet/datagram.c
+++ b/net/phonet/datagram.c
@@ -35,10 +35,10 @@ static int pn_ioctl(struct sock *sk, int cmd, unsigned long arg)
switch (cmd) {
case SIOCINQ:
- lock_sock(sk);
+ spin_lock_bh(&sk->sk_receive_queue.lock);
skb = skb_peek(&sk->sk_receive_queue);
answ = skb ? skb->len : 0;
- release_sock(sk);
+ spin_unlock_bh(&sk->sk_receive_queue.lock);
return put_user(answ, (int __user *)arg);
case SIOCPNADDRESOURCE:
diff --git a/net/phonet/pep.c b/net/phonet/pep.c
index 83ea13a50..607f54c23 100644
--- a/net/phonet/pep.c
+++ b/net/phonet/pep.c
@@ -917,6 +917,37 @@ static int pep_sock_enable(struct sock *sk, struct sockaddr *addr, int len)
return 0;
}
+static unsigned int pep_first_packet_length(struct sock *sk)
+{
+ struct pep_sock *pn = pep_sk(sk);
+ struct sk_buff_head *q;
+ struct sk_buff *skb;
+ unsigned int len = 0;
+ bool found = false;
+
+ if (sock_flag(sk, SOCK_URGINLINE)) {
+ q = &pn->ctrlreq_queue;
+ spin_lock_bh(&q->lock);
+ skb = skb_peek(q);
+ if (skb) {
+ len = skb->len;
+ found = true;
+ }
+ spin_unlock_bh(&q->lock);
+ }
+
+ if (likely(!found)) {
+ q = &sk->sk_receive_queue;
+ spin_lock_bh(&q->lock);
+ skb = skb_peek(q);
+ if (skb)
+ len = skb->len;
+ spin_unlock_bh(&q->lock);
+ }
+
+ return len;
+}
+
static int pep_ioctl(struct sock *sk, int cmd, unsigned long arg)
{
struct pep_sock *pn = pep_sk(sk);
@@ -930,15 +961,7 @@ static int pep_ioctl(struct sock *sk, int cmd, unsigned long arg)
break;
}
- lock_sock(sk);
- if (sock_flag(sk, SOCK_URGINLINE) &&
- !skb_queue_empty(&pn->ctrlreq_queue))
- answ = skb_peek(&pn->ctrlreq_queue)->len;
- else if (!skb_queue_empty(&sk->sk_receive_queue))
- answ = skb_peek(&sk->sk_receive_queue)->len;
- else
- answ = 0;
- release_sock(sk);
+ answ = pep_first_packet_length(sk);
ret = put_user(answ, (int __user *)arg);
break;