netdev - [PATCH net v2] net: handle ARPHRD_PIMREG in dev_is_mac_header

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Date:   Tue, 15 Mar 2022 10:20:08 +0100
From:   Nicolas Dichtel <nicolas.dichtel@...nd.com>
To:     ast@...nel.org, daniel@...earbox.net, davem@...emloft.net,
        kuba@...nel.org
Cc:     netdev@...r.kernel.org,
        Nicolas Dichtel <nicolas.dichtel@...nd.com>,
        stable@...r.kernel.org
Subject: [PATCH net v2] net: handle ARPHRD_PIMREG in dev_is_mac_header_xmit()

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

Cc: stable@...r.kernel.org
Fixes: 27b29f63058d ("bpf: add bpf_redirect() helper")
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@...nd.com>
---

v1 -> v2:
 add the tag "Cc: stable@...r.kernel.org" for correct stable submission

 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 b712217f7030..1ed52441972f 100644
--- a/include/linux/if_arp.h
+++ b/include/linux/if_arp.h
@@ -52,6 +52,7 @@ 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;
-- 
2.33.0