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batman-adv: Disallow mcast src address for data frames

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The routing checks are validating the source mac address of the outer
ethernet header. They reject every source mac address which is a broadcast
address. But they also have to reject any multicast mac addresses.

Signed-off-by: Sven Eckelmann <sven@narfation.org>
[sw@simonwunderlich.de: fix commit message typo]
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
This commit is contained in:
Sven Eckelmann 2016-08-06 17:04:21 +02:00 committed by Simon Wunderlich
parent 7d72d174c7
commit 9f75c8e1c8
1 changed files with 6 additions and 6 deletions
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12
net/batman-adv/routing.c
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@ -368,8 +368,8 @@ int batadv_recv_icmp_packet(struct sk_buff *skb,
if (is_broadcast_ether_addr(ethhdr->h_dest))
goto free_skb;
/* packet with broadcast sender address */
if (is_broadcast_ether_addr(ethhdr->h_source))
/* packet with broadcast/multicast sender address */
if (is_multicast_ether_addr(ethhdr->h_source))
goto free_skb;
/* not for me */
@ -466,8 +466,8 @@ static int batadv_check_unicast_packet(struct batadv_priv *bat_priv,
if (is_broadcast_ether_addr(ethhdr->h_dest))
return -EBADR;
/* packet with broadcast sender address */
if (is_broadcast_ether_addr(ethhdr->h_source))
/* packet with broadcast/multicast sender address */
if (is_multicast_ether_addr(ethhdr->h_source))
return -EBADR;
/* not for me */
@ -1159,8 +1159,8 @@ int batadv_recv_bcast_packet(struct sk_buff *skb,
if (!is_broadcast_ether_addr(ethhdr->h_dest))
goto free_skb;
/* packet with broadcast sender address */
if (is_broadcast_ether_addr(ethhdr->h_source))
/* packet with broadcast/multicast sender address */
if (is_multicast_ether_addr(ethhdr->h_source))
goto free_skb;
/* ignore broadcasts sent by myself */