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Date:   Wed, 29 Nov 2017 16:35:01 +0800
From:   Xie XiuQi <xiexiuqi@...wei.com>
To:     <rostedt@...dmis.org>, <mingo@...hat.com>, <davem@...emloft.net>,
        <brouer@...hat.com>
CC:     <daniel@...earbox.net>, <ast@...nel.org>,
        <kstewart@...uxfoundation.org>, <gregkh@...uxfoundation.org>,
        <john.fastabend@...il.com>, <linux-kernel@...r.kernel.org>,
        <xiexiuqi@...wei.com>, <huangdaode@...ilicon.com>,
        Hanjun Guo <guohanjun@...wei.com>
Subject: [PATCH] trace/xdp: fix compile warning: ‘struct bpf_map’ declared inside parameter list

We meet this compile warning, which caused by missing bpf.h in xdp.h.

In file included from ./include/trace/events/xdp.h:10:0,
                 from ./include/linux/bpf_trace.h:6,
                 from drivers/net/ethernet/intel/i40e/i40e_txrx.c:29:
./include/trace/events/xdp.h:93:17: warning: ‘struct bpf_map’ declared inside parameter list will not be visible outside of this definition or declaration
    const struct bpf_map *map, u32 map_index),
                 ^
./include/linux/tracepoint.h:187:34: note: in definition of macro ‘__DECLARE_TRACE’
  static inline void trace_##name(proto)    \
                                  ^~~~~
./include/linux/tracepoint.h:352:24: note: in expansion of macro ‘PARAMS’
  __DECLARE_TRACE(name, PARAMS(proto), PARAMS(args),  \
                        ^~~~~~
./include/linux/tracepoint.h:477:2: note: in expansion of macro ‘DECLARE_TRACE’
  DECLARE_TRACE(name, PARAMS(proto), PARAMS(args))
  ^~~~~~~~~~~~~
./include/linux/tracepoint.h:477:22: note: in expansion of macro ‘PARAMS’
  DECLARE_TRACE(name, PARAMS(proto), PARAMS(args))
                      ^~~~~~
./include/trace/events/xdp.h:89:1: note: in expansion of macro ‘DEFINE_EVENT’
 DEFINE_EVENT(xdp_redirect_template, xdp_redirect,
 ^~~~~~~~~~~~
./include/trace/events/xdp.h:90:2: note: in expansion of macro ‘TP_PROTO’
  TP_PROTO(const struct net_device *dev,
  ^~~~~~~~
./include/trace/events/xdp.h:93:17: warning: ‘struct bpf_map’ declared inside parameter list will not be visible outside of this definition or declaration
    const struct bpf_map *map, u32 map_index),
                 ^
./include/linux/tracepoint.h:203:38: note: in definition of macro ‘__DECLARE_TRACE’
  register_trace_##name(void (*probe)(data_proto), void *data) \
                                      ^~~~~~~~~~
./include/linux/tracepoint.h:354:4: note: in expansion of macro ‘PARAMS’
    PARAMS(void *__data, proto),   \
    ^~~~~~

Reported-by: Huang Daode <huangdaode@...ilicon.com>
Cc: Hanjun Guo <guohanjun@...wei.com>
Signed-off-by: Xie XiuQi <xiexiuqi@...wei.com>
---
 include/trace/events/xdp.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/trace/events/xdp.h b/include/trace/events/xdp.h
index 4cd0f05..8989a92 100644
--- a/include/trace/events/xdp.h
+++ b/include/trace/events/xdp.h
@@ -8,6 +8,7 @@
 #include <linux/netdevice.h>
 #include <linux/filter.h>
 #include <linux/tracepoint.h>
+#include <linux/bpf.h>
 
 #define __XDP_ACT_MAP(FN)	\
 	FN(ABORTED)		\
-- 
1.8.3.1

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