[IPV6]: Add raw6 drops counter.

Add raw drops counter for IPv6 in /proc/net/raw6 .

Signed-off-by: Wang Chen <wangchen@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 8 insertions, 7 deletions

diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c
index 807260d03586..ae314f3fea46 100644
--- a/net/ipv6/raw.c
+++ b/net/ipv6/raw.c
@@ -354,14 +354,14 @@ static inline int rawv6_rcv_skb(struct sock * sk, struct sk_buff * skb)
 {
         if ((raw6_sk(sk)->checksum || sk->sk_filter) &&
             skb_checksum_complete(skb)) {
-                /* FIXME: increment a raw6 drops counter here */
+                atomic_inc(&sk->sk_drops);
                 kfree_skb(skb);
                 return 0;
         }
 
         /* Charge it to the socket. */
         if (sock_queue_rcv_skb(sk,skb)<0) {
-                /* FIXME: increment a raw6 drops counter here */
+                atomic_inc(&sk->sk_drops);
                 kfree_skb(skb);
                 return 0;
         }
@@ -382,6 +382,7 @@ int rawv6_rcv(struct sock *sk, struct sk_buff *skb)
         struct raw6_sock *rp = raw6_sk(sk);
 
         if (!xfrm6_policy_check(sk, XFRM_POLICY_IN, skb)) {
+                atomic_inc(&sk->sk_drops);
                 kfree_skb(skb);
                 return NET_RX_DROP;
         }
@@ -405,7 +406,7 @@ int rawv6_rcv(struct sock *sk, struct sk_buff *skb)
 
         if (inet->hdrincl) {
                 if (skb_checksum_complete(skb)) {
-                        /* FIXME: increment a raw6 drops counter here */
+                        atomic_inc(&sk->sk_drops);
                         kfree_skb(skb);
                         return 0;
                 }
@@ -496,7 +497,7 @@ csum_copy_err:
            as some normal condition.
          */
         err = (flags&MSG_DONTWAIT) ? -EAGAIN : -EHOSTUNREACH;
-        /* FIXME: increment a raw6 drops counter here */
+        atomic_inc(&sk->sk_drops);
         goto out;
 }
 
@@ -1254,7 +1255,7 @@ static void raw6_sock_seq_show(struct seq_file *seq, struct sock *sp, int i)
         srcp  = inet_sk(sp)->num;
         seq_printf(seq,
                    "%4d: %08X%08X%08X%08X:%04X %08X%08X%08X%08X:%04X "
-                   "%02X %08X:%08X %02X:%08lX %08X %5d %8d %lu %d %p\n",
+                   "%02X %08X:%08X %02X:%08lX %08X %5d %8d %lu %d %p %d\n",
                    i,
                    src->s6_addr32[0], src->s6_addr32[1],
                    src->s6_addr32[2], src->s6_addr32[3], srcp,
@@ -1266,7 +1267,7 @@ static void raw6_sock_seq_show(struct seq_file *seq, struct sock *sp, int i)
                    0, 0L, 0,
                    sock_i_uid(sp), 0,
                    sock_i_ino(sp),
-                   atomic_read(&sp->sk_refcnt), sp);
+                   atomic_read(&sp->sk_refcnt), sp, atomic_read(&sp->sk_drops));
 }
 
 static int raw6_seq_show(struct seq_file *seq, void *v)
@@ -1277,7 +1278,7 @@ static int raw6_seq_show(struct seq_file *seq, void *v)
                            "local_address                         "
                            "remote_address                        "
                            "st tx_queue rx_queue tr tm->when retrnsmt"
-                           "   uid  timeout inode\n");
+                           "   uid  timeout inode  drops\n");
         else
                 raw6_sock_seq_show(seq, v, raw6_seq_private(seq)->bucket);
         return 0;