diff options
| author | Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | 2011-03-16 19:05:27 -0400 |
|---|---|---|
| committer | Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> | 2011-03-16 19:05:27 -0400 |
| commit | b41f14d1b68f18428150596d8a3095b3e015f034 (patch) | |
| tree | acd34e56d742ac706f9fee768d308cbcae37222b /net | |
| parent | 6a0cf272da72e957a4ebb39df37f8fb14661945e (diff) | |
lttng-instrumentation-net-trace-incoming-udp-traffic
LTTng instrumentation net: trace incoming UDP traffic
Add a tracepoint to determine if a received packet contains a UDP datagram.
Signed-off-by: Benjamin Poirier <benjamin.poirier@polymtl.ca>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Diffstat (limited to 'net')
| -rw-r--r-- | net/ipv4/udp.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c index 8157b17959e..21f5aac48d3 100644 --- a/net/ipv4/udp.c +++ b/net/ipv4/udp.c @@ -105,6 +105,7 @@ #include <net/route.h> #include <net/checksum.h> #include <net/xfrm.h> +#include <trace/net.h> #include "udp_impl.h" struct udp_table udp_table __read_mostly; @@ -125,6 +126,8 @@ EXPORT_SYMBOL(udp_memory_allocated); #define MAX_UDP_PORTS 65536 #define PORTS_PER_CHAIN (MAX_UDP_PORTS / UDP_HTABLE_SIZE_MIN) +DEFINE_TRACE(net_udpv4_rcv); + static int udp_lib_lport_inuse(struct net *net, __u16 num, const struct udp_hslot *hslot, unsigned long *bitmap, @@ -1596,6 +1599,8 @@ int __udp4_lib_rcv(struct sk_buff *skb, struct udp_table *udptable, if (udp4_csum_init(skb, uh, proto)) goto csum_error; + trace_net_udpv4_rcv(skb); + if (rt->rt_flags & (RTCF_BROADCAST|RTCF_MULTICAST)) return __udp4_lib_mcast_deliver(net, skb, uh, saddr, daddr, udptable); |