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From:   Taeung Song <treeze.taeung@gmail.com>
To:     Alexei Starovoitov <ast@kernel.org>,
        Daniel Borkmann <daniel@iogearbox.net>
Cc:     Teng Qin <qinteng@fb.com>, netdev@vger.kernel.org,
        linux-kernel@vger.kernel.org, Taeung Song <treeze.taeung@gmail.com>
Subject: [PATCH 1/4] samples/bpf: add missing <linux/if_vlan.h>
Date:   Mon,  2 Jul 2018 18:14:50 +0900
Message-Id: <1530522893-8961-2-git-send-email-treeze.taeung@gmail.com>
In-Reply-To: <1530522893-8961-1-git-send-email-treeze.taeung@gmail.com>
References: <1530522893-8961-1-git-send-email-treeze.taeung@gmail.com>
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

This fixes build error regarding redefinition:

    CLANG-bpf  samples/bpf/parse_varlen.o
  samples/bpf/parse_varlen.c:111:8: error: redefinition of 'vlan_hdr'
  struct vlan_hdr {
         ^
  ./include/linux/if_vlan.h:38:8: note: previous definition is here

So remove duplicate 'struct vlan_hdr' in sample code and include if_vlan.h

Signed-off-by: Taeung Song <treeze.taeung@gmail.com>
---
 samples/bpf/parse_varlen.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/samples/bpf/parse_varlen.c b/samples/bpf/parse_varlen.c
index 95c1632..0b6f22f 100644
--- a/samples/bpf/parse_varlen.c
+++ b/samples/bpf/parse_varlen.c
@@ -6,6 +6,7 @@
  */
 #define KBUILD_MODNAME "foo"
 #include <linux/if_ether.h>
+#include <linux/if_vlan.h>
 #include <linux/ip.h>
 #include <linux/ipv6.h>
 #include <linux/in.h>
@@ -108,11 +109,6 @@ static int parse_ipv6(void *data, uint64_t nh_off, void *data_end)
 	return 0;
 }
 
-struct vlan_hdr {
-	uint16_t h_vlan_TCI;
-	uint16_t h_vlan_encapsulated_proto;
-};
-
 SEC("varlen")
 int handle_ingress(struct __sk_buff *skb)
 {
-- 
2.7.4