routing.c (f097e25dbe9144447f46b6b61ca3da1a2ba432d4) routing.c (610bfc6bc99bc83680d190ebc69359a05fc7f605)
1/* Copyright (C) 2007-2013 B.A.T.M.A.N. contributors:
2 *
3 * Marek Lindner, Simon Wunderlich
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of version 2 of the GNU General Public
7 * License as published by the Free Software Foundation.
8 *

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23#include "soft-interface.h"
24#include "hard-interface.h"
25#include "icmp_socket.h"
26#include "translation-table.h"
27#include "originator.h"
28#include "bridge_loop_avoidance.h"
29#include "distributed-arp-table.h"
30#include "network-coding.h"
1/* Copyright (C) 2007-2013 B.A.T.M.A.N. contributors:
2 *
3 * Marek Lindner, Simon Wunderlich
4 *
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of version 2 of the GNU General Public
7 * License as published by the Free Software Foundation.
8 *

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23#include "soft-interface.h"
24#include "hard-interface.h"
25#include "icmp_socket.h"
26#include "translation-table.h"
27#include "originator.h"
28#include "bridge_loop_avoidance.h"
29#include "distributed-arp-table.h"
30#include "network-coding.h"
31#include "fragmentation.h"
31
32static int batadv_route_unicast_packet(struct sk_buff *skb,
33 struct batadv_hard_iface *recv_if);
34
35static void _batadv_update_route(struct batadv_priv *bat_priv,
36 struct batadv_orig_node *orig_node,
37 struct batadv_neigh_node *neigh_node)
38{

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1008 tvlv_buff, tvlv_buff_len);
1009
1010 if (ret != NET_RX_SUCCESS)
1011 ret = batadv_route_unicast_packet(skb, recv_if);
1012
1013 return ret;
1014}
1015
32
33static int batadv_route_unicast_packet(struct sk_buff *skb,
34 struct batadv_hard_iface *recv_if);
35
36static void _batadv_update_route(struct batadv_priv *bat_priv,
37 struct batadv_orig_node *orig_node,
38 struct batadv_neigh_node *neigh_node)
39{

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1009 tvlv_buff, tvlv_buff_len);
1010
1011 if (ret != NET_RX_SUCCESS)
1012 ret = batadv_route_unicast_packet(skb, recv_if);
1013
1014 return ret;
1015}
1016
1017/**
1018 * batadv_recv_frag_packet - process received fragment
1019 * @skb: the received fragment
1020 * @recv_if: interface that the skb is received on
1021 *
1022 * This function does one of the three following things: 1) Forward fragment, if
1023 * the assembled packet will exceed our MTU; 2) Buffer fragment, if we till
1024 * lack further fragments; 3) Merge fragments, if we have all needed parts.
1025 *
1026 * Return NET_RX_DROP if the skb is not consumed, NET_RX_SUCCESS otherwise.
1027 */
1028int batadv_recv_frag_packet(struct sk_buff *skb,
1029 struct batadv_hard_iface *recv_if)
1030{
1031 struct batadv_priv *bat_priv = netdev_priv(recv_if->soft_iface);
1032 struct batadv_orig_node *orig_node_src = NULL;
1033 struct batadv_frag_packet *frag_packet;
1034 int ret = NET_RX_DROP;
1035
1036 if (batadv_check_unicast_packet(bat_priv, skb,
1037 sizeof(*frag_packet)) < 0)
1038 goto out;
1039
1040 frag_packet = (struct batadv_frag_packet *)skb->data;
1041 orig_node_src = batadv_orig_hash_find(bat_priv, frag_packet->orig);
1042 if (!orig_node_src)
1043 goto out;
1044
1045 /* Route the fragment if it is not for us and too big to be merged. */
1046 if (!batadv_is_my_mac(bat_priv, frag_packet->dest) &&
1047 batadv_frag_skb_fwd(skb, recv_if, orig_node_src)) {
1048 ret = NET_RX_SUCCESS;
1049 goto out;
1050 }
1051
1052 batadv_inc_counter(bat_priv, BATADV_CNT_FRAG_RX);
1053 batadv_add_counter(bat_priv, BATADV_CNT_FRAG_RX_BYTES, skb->len);
1054
1055 /* Add fragment to buffer and merge if possible. */
1056 if (!batadv_frag_skb_buffer(&skb, orig_node_src))
1057 goto out;
1058
1059 /* Deliver merged packet to the appropriate handler, if it was
1060 * merged
1061 */
1062 if (skb)
1063 batadv_batman_skb_recv(skb, recv_if->net_dev,
1064 &recv_if->batman_adv_ptype, NULL);
1065
1066 ret = NET_RX_SUCCESS;
1067
1068out:
1069 if (orig_node_src)
1070 batadv_orig_node_free_ref(orig_node_src);
1071
1072 return ret;
1073}
1074
1016int batadv_recv_bcast_packet(struct sk_buff *skb,
1017 struct batadv_hard_iface *recv_if)
1018{
1019 struct batadv_priv *bat_priv = netdev_priv(recv_if->soft_iface);
1020 struct batadv_orig_node *orig_node = NULL;
1021 struct batadv_bcast_packet *bcast_packet;
1022 struct ethhdr *ethhdr;
1023 int hdr_size = sizeof(*bcast_packet);

--- 92 unchanged lines hidden --- 		1075int batadv_recv_bcast_packet(struct sk_buff *skb,
1076 struct batadv_hard_iface *recv_if)
1077{
1078 struct batadv_priv *bat_priv = netdev_priv(recv_if->soft_iface);
1079 struct batadv_orig_node *orig_node = NULL;
1080 struct batadv_bcast_packet *bcast_packet;
1081 struct ethhdr *ethhdr;
1082 int hdr_size = sizeof(*bcast_packet);

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