From b63768cbe0acea7ce02393f250db8f6fcdf98c57 Mon Sep 17 00:00:00 2001
From: Sasha Levin <sashal@kernel.org>
Date: Tue, 15 Mar 2022 10:20:08 +0100
Subject: net: handle ARPHRD_PIMREG in dev_is_mac_header_xmit()

From: Nicolas Dichtel <nicolas.dichtel@6wind.com>

[ Upstream commit 4ee06de7729d795773145692e246a06448b1eb7a ]

This kind of interface doesn't have a mac header. This patch fixes
bpf_redirect() to a PIM interface.

Fixes: 27b29f63058d ("bpf: add bpf_redirect() helper")
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Link: https://lore.kernel.org/r/20220315092008.31423-1-nicolas.dichtel@6wind.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 include/linux/if_arp.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/linux/if_arp.h b/include/linux/if_arp.h
index bf5c5f32c65e..e147ea679467 100644
--- a/include/linux/if_arp.h
+++ b/include/linux/if_arp.h
@@ -51,6 +51,7 @@ static inline bool dev_is_mac_header_xmit(const struct net_device *dev)
 	case ARPHRD_VOID:
 	case ARPHRD_NONE:
 	case ARPHRD_RAWIP:
+	case ARPHRD_PIMREG:
 		return false;
 	default:
 		return true;
-- 
2.34.1