From c491680f8f489926eebfdf2cd006767fc8bdaa49 Mon Sep 17 00:00:00 2001
From: Daniel Borkmann <daniel@iogearbox.net>
Date: Sat, 26 Nov 2016 01:28:06 +0100
Subject: bpf: reuse dev_is_mac_header_xmit for redirect

Commit dcf800344a91 ("net/sched: act_mirred: Refactor detection whether
dev needs xmit at mac header") added dev_is_mac_header_xmit(); since it's
also useful elsewhere, move it to if_arp.h and reuse it for BPF.

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 net/core/filter.c | 14 ++++----------
 1 file changed, 4 insertions(+), 10 deletions(-)

(limited to 'net/core/filter.c')

diff --git a/net/core/filter.c b/net/core/filter.c
index ea315af56511..698a262b8ebb 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -30,6 +30,7 @@
 #include <linux/inet.h>
 #include <linux/netdevice.h>
 #include <linux/if_packet.h>
+#include <linux/if_arp.h>
 #include <linux/gfp.h>
 #include <net/ip.h>
 #include <net/protocol.h>
@@ -1696,17 +1697,10 @@ static int __bpf_redirect_common(struct sk_buff *skb, struct net_device *dev,
 static int __bpf_redirect(struct sk_buff *skb, struct net_device *dev,
 			  u32 flags)
 {
-	switch (dev->type) {
-	case ARPHRD_TUNNEL:
-	case ARPHRD_TUNNEL6:
-	case ARPHRD_SIT:
-	case ARPHRD_IPGRE:
-	case ARPHRD_VOID:
-	case ARPHRD_NONE:
-		return __bpf_redirect_no_mac(skb, dev, flags);
-	default:
+	if (dev_is_mac_header_xmit(dev))
 		return __bpf_redirect_common(skb, dev, flags);
-	}
+	else
+		return __bpf_redirect_no_mac(skb, dev, flags);
 }
 
 BPF_CALL_3(bpf_clone_redirect, struct sk_buff *, skb, u32, ifindex, u64, flags)
-- 
cgit v1.2.3-59-g8ed1b