af_packet: move strict addr_len check right before dev_[mc/unicast]_[add/del]

[mv-sheeva.git] / net / packet / af_packet.c

diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index 031a5e6fb4aa9c8dfc64f7a780cdb15496eb759f..1612d417d10c5b631c4aeea78207cd8e34a0a305 100644 (file)
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -1688,6 +1688,8 @@ static int packet_dev_mc(struct net_device *dev, struct packet_mclist *i,
 {
        switch (i->type) {
        case PACKET_MR_MULTICAST:
+               if (i->alen != dev->addr_len)
+                       return -EINVAL;
                if (what > 0)
                        return dev_mc_add(dev, i->addr, i->alen, 0);
                else
@@ -1700,6 +1702,8 @@ static int packet_dev_mc(struct net_device *dev, struct packet_mclist *i,
                return dev_set_allmulti(dev, what);
                break;
        case PACKET_MR_UNICAST:
+               if (i->alen != dev->addr_len)
+                       return -EINVAL;
                if (what > 0)
                        return dev_unicast_add(dev, i->addr);
                else
@@ -1734,7 +1738,7 @@ static int packet_mc_add(struct sock *sk, struct packet_mreq_max *mreq)
                goto done;
 
        err = -EINVAL;
-       if (mreq->mr_alen != dev->addr_len)
+       if (mreq->mr_alen > dev->addr_len)
                goto done;
 
        err = -ENOBUFS;