linux-kernel - [PATCH 4.17 187/324] samples/bpf: add missing <linux/if

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Message-Id: <20180823075005.535955578@linuxfoundation.org>
Date:   Thu, 23 Aug 2018 09:54:13 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Taeung Song <treeze.taeung@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Daniel Borkmann <daniel@...earbox.net>,
        Sasha Levin <alexander.levin@...rosoft.com>
Subject: [PATCH 4.17 187/324] samples/bpf: add missing <linux/if_vlan.h>

4.17-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Taeung Song <treeze.taeung@...il.com>

[ Upstream commit 4d5d33a085335ef469c9a87792bcaaaa8e64d8c4 ]

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@...il.com>
Acked-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Daniel Borkmann <daniel@...earbox.net>
Signed-off-by: Sasha Levin <alexander.levin@...rosoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 samples/bpf/parse_varlen.c |    6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

--- 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
 	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)
 {