From 8edf19c2fe028563fc6ea9cb1995b8ee4172d4b6 Mon Sep 17 00:00:00 2001
From: Eric Dumazet <eric.dumazet@gmail.com>
Date: Thu, 15 Oct 2009 00:12:40 +0000
Subject: [PATCH] net: sk_drops consolidation part 2
- skb_kill_datagram() can increment sk->sk_drops itself, not callers.
- UDP on IPV4 & IPV6 dropped frames (because of bad checksum or policy checks) increment sk_drops
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
net/core/datagram.c | 1 +
net/ipv4/udp.c | 2 ++
net/ipv6/raw.c | 1 -
net/ipv6/udp.c | 4 +++-
4 files changed, 6 insertions(+), 2 deletions(-)
diff --git a/net/core/datagram.c b/net/core/datagram.c
index 1c6cf3a1a4f6..4d57f5e12b05 100644
--- a/net/core/datagram.c
+++ b/net/core/datagram.c
@@ -262,6 +262,7 @@ int skb_kill_datagram(struct sock *sk, struct sk_buff *skb, unsigned int flags)
}
kfree_skb(skb);
+ atomic_inc(&sk->sk_drops);
sk_mem_reclaim_partial(sk);
return err;
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index ec5c7a720c0c..4274c1cc78fd 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -867,6 +867,7 @@ static unsigned int first_packet_length(struct sock *sk)
udp_lib_checksum_complete(skb)) {
UDP_INC_STATS_BH(sock_net(sk), UDP_MIB_INERRORS,
IS_UDPLITE(sk));
+ atomic_inc(&sk->sk_drops);
__skb_unlink(skb, rcvq);
__skb_queue_tail(&list_kill, skb);
}
@@ -1186,6 +1187,7 @@ int udp_queue_rcv_skb(struct sock *sk, struct sk_buff *skb)
drop:
UDP_INC_STATS_BH(sock_net(sk), UDP_MIB_INERRORS, is_udplite);
+ atomic_inc(&sk->sk_drops);
kfree_skb(skb);
return -1;
}
diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c
index 52ed7d7f9dab..cb834ab7f071 100644
--- a/net/ipv6/raw.c
+++ b/net/ipv6/raw.c
@@ -517,7 +517,6 @@ csum_copy_err:
as some normal condition.
*/
err = (flags&MSG_DONTWAIT) ? -EAGAIN : -EHOSTUNREACH;
- atomic_inc(&sk->sk_drops);
goto out;
}
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index 829d300a6f35..d3b59d73f507 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -390,11 +390,13 @@ int udpv6_queue_rcv_skb(struct sock * sk, struct sk_buff *skb)
if (rc == -ENOMEM)
UDP6_INC_STATS_BH(sock_net(sk),
UDP_MIB_RCVBUFERRORS, is_udplite);
- goto drop;
+ goto drop_no_sk_drops_inc;
}
return 0;
drop:
+ atomic_inc(&sk->sk_drops);
+drop_no_sk_drops_inc:
UDP6_INC_STATS_BH(sock_net(sk), UDP_MIB_INERRORS, is_udplite);
kfree_skb(skb);
return -1;
--
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