From 5acaee0a8964c9bab7775ab8bedcd1f66a2a1011 Mon Sep 17 00:00:00 2001 From: John Fastabend Date: Mon, 17 Jul 2017 09:28:35 -0700 Subject: 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 Acked-by: Daniel Borkmann Acked-by: Jesper Dangaard Brouer Signed-off-by: David S. Miller --- include/trace/events/xdp.h | 31 ++++++++++++++++++++++++++++++- 1 file changed, 30 insertions(+), 1 deletion(-) (limited to 'include/trace') diff --git a/include/trace/events/xdp.h b/include/trace/events/xdp.h index 1b61357..7b1eb7b 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 -- cgit v1.1