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| author | Marek Lindner | 2013-05-27 09:33:25 +0200 |
|---|---|---|
| committer | Antonio Quartulli | 2013-10-23 17:03:43 +0200 |
| commit | a19d3d85e1b854e4a483a55d740a42458085560d (patch) | |
| tree | a289948258c78d0ea968059ab432046ac2938d56 /net/batman-adv/soft-interface.c | |
| parent | batman-adv: adapt the TT component to use the new API functions (diff) | |
| download | kernel-qcow2-linux-a19d3d85e1b854e4a483a55d740a42458085560d.tar.gz kernel-qcow2-linux-a19d3d85e1b854e4a483a55d740a42458085560d.tar.xz kernel-qcow2-linux-a19d3d85e1b854e4a483a55d740a42458085560d.zip | |
batman-adv: limit local translation table max size
The local translation table size is limited by what can be
transferred from one node to another via a full table request.
The number of entries fitting into a full table request depend
on whether the fragmentation is enabled or not. Therefore this
patch introduces a max table size check and refuses to add
more local clients when that size is reached. Moreover, if the
max full table packet size changes (MTU change or fragmentation
is disabled) the local table is downsized instantaneously.
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
Acked-by: Antonio Quartulli <ordex@autistici.org>
Diffstat (limited to 'net/batman-adv/soft-interface.c')
| -rw-r--r-- | net/batman-adv/soft-interface.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c index e70f530d8568..36f050876f82 100644 --- a/net/batman-adv/soft-interface.c +++ b/net/batman-adv/soft-interface.c @@ -166,7 +166,7 @@ static int batadv_interface_tx(struct sk_buff *skb, unsigned int header_len = 0; int data_len = skb->len, ret; unsigned long brd_delay = 1; - bool do_bcast = false; + bool do_bcast = false, client_added; unsigned short vid; uint32_t seqno; @@ -196,9 +196,12 @@ static int batadv_interface_tx(struct sk_buff *skb, ethhdr = (struct ethhdr *)skb->data; /* Register the client MAC in the transtable */ - if (!is_multicast_ether_addr(ethhdr->h_source)) - batadv_tt_local_add(soft_iface, ethhdr->h_source, vid, - skb->skb_iif); + if (!is_multicast_ether_addr(ethhdr->h_source)) { + client_added = batadv_tt_local_add(soft_iface, ethhdr->h_source, + vid, skb->skb_iif); + if (!client_added) + goto dropped; + } /* don't accept stp packets. STP does not help in meshes. * better use the bridge loop avoidance ... @@ -674,6 +677,7 @@ static int batadv_softif_init_late(struct net_device *dev) atomic_set(&bat_priv->log_level, 0); #endif atomic_set(&bat_priv->fragmentation, 1); + atomic_set(&bat_priv->packet_size_max, ETH_DATA_LEN); atomic_set(&bat_priv->bcast_queue_left, BATADV_BCAST_QUEUE_LEN); atomic_set(&bat_priv->batman_queue_left, BATADV_BATMAN_QUEUE_LEN); |