1 files changed, 15 insertions, 15 deletions

diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index da73e8a8c18d..594c078c5ebc 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -428,24 +428,18 @@ out_unlock:
 }
 #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;
 }
 
 /*
@@ -467,7 +461,7 @@ static int packet_rcv(struct sk_buff *skb, struct net_device *dev, struct packet
         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;
@@ -495,8 +489,11 @@ static int packet_rcv(struct sk_buff *skb, struct net_device *dev, struct packet
 
         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)
@@ -568,7 +565,7 @@ static int tpacket_rcv(struct sk_buff *skb, struct net_device *dev, struct packe
         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;
@@ -592,8 +589,11 @@ static int tpacket_rcv(struct sk_buff *skb, struct net_device *dev, struct packe
 
         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;