udp: sk_drops handling

[h-e-n] / net / ipv4 / udp.c

diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 11eabf1..3bbf6fb 100644 (file)
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -1040,8 +1040,10 @@ int udp_queue_rcv_skb(struct sock * sk, struct sk_buff *skb)
 
        if ((rc = sock_queue_rcv_skb(sk,skb)) < 0) {
                /* Note that an ENOMEM error is charged twice */
-               if (rc == -ENOMEM)
+               if (rc == -ENOMEM) {
                        UDP_INC_STATS_BH(UDP_MIB_RCVBUFERRORS, is_udplite);
+                       atomic_inc(&sk->sk_drops);
+               }
                goto drop;
        }
 
@@ -1629,12 +1631,13 @@ static void udp4_format_sock(struct sock *sp, struct seq_file *f,
        __u16 srcp        = ntohs(inet->sport);
 
        seq_printf(f, "%4d: %08X:%04X %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",
                bucket, src, srcp, dest, destp, sp->sk_state,
                atomic_read(&sp->sk_wmem_alloc),
                atomic_read(&sp->sk_rmem_alloc),
                0, 0L, 0, sock_i_uid(sp), 0, sock_i_ino(sp),
-               atomic_read(&sp->sk_refcnt), sp, len);
+               atomic_read(&sp->sk_refcnt), sp,
+               atomic_read(&sp->sk_drops), len);
 }
 
 int udp4_seq_show(struct seq_file *seq, void *v)
@@ -1643,7 +1646,7 @@ int udp4_seq_show(struct seq_file *seq, void *v)
                seq_printf(seq, "%-127s\n",
                           "  sl  local_address rem_address   st tx_queue "
                           "rx_queue tr tm->when retrnsmt   uid  timeout "
-                          "inode");
+                          "inode ref pointer drops");
        else {
                struct udp_iter_state *state = seq->private;
                int len;