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authorDavid S. Miller <davem@davemloft.net>2014-03-06 15:03:17 -0500
committerDavid S. Miller <davem@davemloft.net>2014-03-06 15:19:43 -0500
commitf7324acd98ce48fcde9783884ffe8c0b90899e5e (patch)
tree634889d26e000f0f1ca97fc784adb1b13c40e883
parent072256d1f2b8ba0bbb265d590c703f3d57a39d6a (diff)
downloadlinux-f7324acd98ce48fcde9783884ffe8c0b90899e5e.tar.bz2
tcp: Use NET_ADD_STATS instead of NET_ADD_STATS_BH in tcp_event_new_data_sent()
Can be invoked from non-BH context. Based upon a patch by Eric Dumazet. Fixes: f19c29e3e391 ("tcp: snmp stats for Fast Open, SYN rtx, and data pkts") Reported-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--include/net/ip.h1
-rw-r--r--net/ipv4/tcp_output.c4
2 files changed, 3 insertions, 2 deletions
diff --git a/include/net/ip.h b/include/net/ip.h
index b885d75cede4..25064c28e059 100644
--- a/include/net/ip.h
+++ b/include/net/ip.h
@@ -187,6 +187,7 @@ void ip_send_unicast_reply(struct net *net, struct sk_buff *skb, __be32 daddr,
#define NET_INC_STATS(net, field) SNMP_INC_STATS((net)->mib.net_statistics, field)
#define NET_INC_STATS_BH(net, field) SNMP_INC_STATS_BH((net)->mib.net_statistics, field)
#define NET_INC_STATS_USER(net, field) SNMP_INC_STATS_USER((net)->mib.net_statistics, field)
+#define NET_ADD_STATS(net, field, adnd) SNMP_ADD_STATS((net)->mib.net_statistics, field, adnd)
#define NET_ADD_STATS_BH(net, field, adnd) SNMP_ADD_STATS_BH((net)->mib.net_statistics, field, adnd)
#define NET_ADD_STATS_USER(net, field, adnd) SNMP_ADD_STATS_USER((net)->mib.net_statistics, field, adnd)
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index 5286228679bd..a02c884d4321 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -87,8 +87,8 @@ static void tcp_event_new_data_sent(struct sock *sk, const struct sk_buff *skb)
tcp_rearm_rto(sk);
}
- NET_ADD_STATS_BH(sock_net(sk), LINUX_MIB_TCPORIGDATASENT,
- tcp_skb_pcount(skb));
+ NET_ADD_STATS(sock_net(sk), LINUX_MIB_TCPORIGDATASENT,
+ tcp_skb_pcount(skb));
}
/* SND.NXT, if window was not shrunk.