From ee75ed88879af88558818a5c6609d85f60ff0df4 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Martin=20Hundeb=C3=B8ll?= Date: Thu, 23 May 2013 16:53:03 +0200 Subject: batman-adv: Fragment and send skbs larger than mtu MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Non-broadcast packets larger than MTU are fragmented and sent with an encapsulating header. Up to 16 fragments are supported, which are sent in reverse order on the wire to allow minimal memory copying when creating fragments. Signed-off-by: Martin Hundebøll Signed-off-by: Marek Lindner Signed-off-by: Antonio Quartulli --- net/batman-adv/soft-interface.c | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'net/batman-adv/soft-interface.c') diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c index dd189e6bf05a..18b1fd915d1f 100644 --- a/net/batman-adv/soft-interface.c +++ b/net/batman-adv/soft-interface.c @@ -442,6 +442,7 @@ static void batadv_softif_destroy_finish(struct work_struct *work) static int batadv_softif_init_late(struct net_device *dev) { struct batadv_priv *bat_priv; + uint32_t random_seqno; int ret; size_t cnt_len = sizeof(uint64_t) * BATADV_CNT_NUM; @@ -491,6 +492,10 @@ static int batadv_softif_init_late(struct net_device *dev) bat_priv->tt.last_changeset = NULL; bat_priv->tt.last_changeset_len = 0; + /* randomize initial seqno to avoid collision */ + get_random_bytes(&random_seqno, sizeof(random_seqno)); + atomic_set(&bat_priv->frag_seqno, random_seqno); + bat_priv->primary_if = NULL; bat_priv->num_ifaces = 0; @@ -758,6 +763,8 @@ static const struct { { "mgmt_tx_bytes" }, { "mgmt_rx" }, { "mgmt_rx_bytes" }, + { "frag_tx" }, + { "frag_tx_bytes" }, { "frag_rx" }, { "frag_rx_bytes" }, { "frag_fwd" }, -- cgit v1.2.3