Phonet: correct pipe backlog callback return values
In some cases, the Phonet pipe backlog callbacks returned negative
errno instead of NET_RX_* values.
In other cases, NET_RX_DROP was returned for invalid packets, even
though it seems only intended for buffering problems (not for
deliberately discarded packets).
Signed-off-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/phonet/pep.c b/net/phonet/pep.c
index 875e86c..40952c7 100644
--- a/net/phonet/pep.c
+++ b/net/phonet/pep.c
@@ -522,7 +522,8 @@
if (!pn_flow_safe(pn->rx_fc)) {
err = sock_queue_rcv_skb(sk, skb);
if (!err)
- return 0;
+ return NET_RX_SUCCESS;
+ err = -ENOBUFS;
break;
}
@@ -575,7 +576,7 @@
}
out:
kfree_skb(skb);
- return err;
+ return (err == -ENOBUFS) ? NET_RX_DROP : NET_RX_SUCCESS;
queue:
skb->dev = NULL;
@@ -584,7 +585,7 @@
skb_queue_tail(queue, skb);
if (!sock_flag(sk, SOCK_DEAD))
sk->sk_data_ready(sk, err);
- return 0;
+ return NET_RX_SUCCESS;
}
/* Destroy connected sock. */
@@ -686,11 +687,6 @@
}
peer_type = hdr->other_pep_type << 8;
- if (unlikely(sk->sk_state != TCP_LISTEN) || sk_acceptq_is_full(sk)) {
- pep_reject_conn(sk, skb, PN_PIPE_ERR_PEP_IN_USE);
- return -ENOBUFS;
- }
-
/* Parse sub-blocks (options) */
n_sb = hdr->data[4];
while (n_sb > 0) {
@@ -790,7 +786,6 @@
struct sock *sknode;
struct pnpipehdr *hdr;
struct sockaddr_pn dst;
- int err = NET_RX_SUCCESS;
u8 pipe_handle;
if (!pskb_may_pull(skb, sizeof(*hdr)))
@@ -814,18 +809,20 @@
sock_put(sknode);
if (net_ratelimit())
printk(KERN_WARNING"Phonet unconnected PEP ignored");
- err = NET_RX_DROP;
goto drop;
}
switch (hdr->message_id) {
case PNS_PEP_CONNECT_REQ:
- err = pep_connreq_rcv(sk, skb);
+ if (sk->sk_state == TCP_LISTEN && !sk_acceptq_is_full(sk))
+ pep_connreq_rcv(sk, skb);
+ else
+ pep_reject_conn(sk, skb, PN_PIPE_ERR_PEP_IN_USE);
break;
#ifdef CONFIG_PHONET_PIPECTRLR
case PNS_PEP_CONNECT_RESP:
- err = pep_connresp_rcv(sk, skb);
+ pep_connresp_rcv(sk, skb);
break;
#endif
@@ -842,11 +839,11 @@
case PNS_PEP_DISABLE_REQ:
/* invalid handle is not even allowed here! */
default:
- err = NET_RX_DROP;
+ break;
}
drop:
kfree_skb(skb);
- return err;
+ return NET_RX_SUCCESS;
}
#ifndef CONFIG_PHONET_PIPECTRLR