if (dev == NULL)
goto out_unlock;
+ err = -ENETDOWN;
+ if (!(dev->flags & IFF_UP))
+ goto out_unlock;
+
/*
* You may not queue a frame bigger than the mtu. This is the lowest level
* raw protocol and you must do your own fragmentation at this level.
if (err)
goto out_free;
- err = -ENETDOWN;
- if (!(dev->flags & IFF_UP))
- goto out_free;
-
/*
* Now send it
*/
}
#endif
-static inline int run_filter(struct sk_buff *skb, struct sock *sk,
- unsigned *snaplen)
+static inline unsigned int run_filter(struct sk_buff *skb, struct sock *sk,
+ unsigned int res)
{
struct sk_filter *filter;
- int err = 0;
rcu_read_lock_bh();
filter = rcu_dereference(sk->sk_filter);
- if (filter != NULL) {
- err = sk_run_filter(skb, filter->insns, filter->len);
- if (!err)
- err = -EPERM;
- else if (*snaplen > err)
- *snaplen = err;
- }
+ if (filter != NULL)
+ res = sk_run_filter(skb, filter->insns, filter->len);
rcu_read_unlock_bh();
- return err;
+ return res;
}
/*
struct packet_sock *po;
u8 * skb_head = skb->data;
int skb_len = skb->len;
- unsigned snaplen;
+ unsigned int snaplen, res;
if (skb->pkt_type == PACKET_LOOPBACK)
goto drop;
snaplen = skb->len;
- if (run_filter(skb, sk, &snaplen) < 0)
+ res = run_filter(skb, sk, snaplen);
+ if (!res)
goto drop_n_restore;
+ if (snaplen > res)
+ snaplen = res;
if (atomic_read(&sk->sk_rmem_alloc) + skb->truesize >=
(unsigned)sk->sk_rcvbuf)
struct tpacket_hdr *h;
u8 * skb_head = skb->data;
int skb_len = skb->len;
- unsigned snaplen;
+ unsigned int snaplen, res;
unsigned long status = TP_STATUS_LOSING|TP_STATUS_USER;
unsigned short macoff, netoff;
struct sk_buff *copy_skb = NULL;
snaplen = skb->len;
- if (run_filter(skb, sk, &snaplen) < 0)
+ res = run_filter(skb, sk, snaplen);
+ if (!res)
goto drop_n_restore;
+ if (snaplen > res)
+ snaplen = res;
if (sk->sk_type == SOCK_DGRAM) {
macoff = netoff = TPACKET_ALIGN(TPACKET_HDRLEN) + 16;
if (sock->type == SOCK_RAW)
reserve = dev->hard_header_len;
+ err = -ENETDOWN;
+ if (!(dev->flags & IFF_UP))
+ goto out_unlock;
+
err = -EMSGSIZE;
if (len > dev->mtu+reserve)
goto out_unlock;
skb->dev = dev;
skb->priority = sk->sk_priority;
- err = -ENETDOWN;
- if (!(dev->flags & IFF_UP))
- goto out_free;
-
/*
* Now send it
*/