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authorJohn Fastabend <john.fastabend@gmail.com>2017-07-17 09:28:35 -0700
committerDavid S. Miller <davem@davemloft.net>2017-07-17 09:48:06 -0700
commit5acaee0a8964c9bab7775ab8bedcd1f66a2a1011 (patch)
tree1e1d190f59d1d5f0e1975e04e32feb500da9c5b8 /include/trace
parent6453073987ba392510ab6c8b657844a9312c67f7 (diff)
downloadlinux-5acaee0a8964c9bab7775ab8bedcd1f66a2a1011.tar.bz2
xdp: add trace event for xdp redirect
This adds a trace event for xdp redirect which may help when debugging XDP programs that use redirect bpf commands. Signed-off-by: John Fastabend <john.fastabend@gmail.com> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Jesper Dangaard Brouer <brouer@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/trace')
-rw-r--r--include/trace/events/xdp.h31
1 files changed, 30 insertions, 1 deletions
diff --git a/include/trace/events/xdp.h b/include/trace/events/xdp.h
index 1b61357d3f57..7b1eb7b4be41 100644
--- a/include/trace/events/xdp.h
+++ b/include/trace/events/xdp.h
@@ -12,7 +12,8 @@
FN(ABORTED) \
FN(DROP) \
FN(PASS) \
- FN(TX)
+ FN(TX) \
+ FN(REDIRECT)
#define __XDP_ACT_TP_FN(x) \
TRACE_DEFINE_ENUM(XDP_##x);
@@ -48,6 +49,34 @@ TRACE_EVENT(xdp_exception,
__print_symbolic(__entry->act, __XDP_ACT_SYM_TAB))
);
+TRACE_EVENT(xdp_redirect,
+
+ TP_PROTO(const struct net_device *from,
+ const struct net_device *to,
+ const struct bpf_prog *xdp, u32 act),
+
+ TP_ARGS(from, to, xdp, act),
+
+ TP_STRUCT__entry(
+ __string(name_from, from->name)
+ __string(name_to, to->name)
+ __array(u8, prog_tag, 8)
+ __field(u32, act)
+ ),
+
+ TP_fast_assign(
+ BUILD_BUG_ON(sizeof(__entry->prog_tag) != sizeof(xdp->tag));
+ memcpy(__entry->prog_tag, xdp->tag, sizeof(xdp->tag));
+ __assign_str(name_from, from->name);
+ __assign_str(name_to, to->name);
+ __entry->act = act;
+ ),
+
+ TP_printk("prog=%s from=%s to=%s action=%s",
+ __print_hex_str(__entry->prog_tag, 8),
+ __get_str(name_from), __get_str(name_to),
+ __print_symbolic(__entry->act, __XDP_ACT_SYM_TAB))
+);
#endif /* _TRACE_XDP_H */
#include <trace/define_trace.h>