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.

Fixes: 27b29f63 ("bpf: add bpf_redirect() helper")
Signed-off-by: NNicolas Dichtel <nicolas.dichtel@6wind.com>
Link: https://lore.kernel.org/r/20220315092008.31423-1-nicolas.dichtel@6wind.comSigned-off-by: NJakub Kicinski <kuba@kernel.org>

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;