From fe8a93b95145c66adf196eea4a919dfe0b7c57db Mon Sep 17 00:00:00 2001 From: Antonio Quartulli Date: Wed, 3 Apr 2013 19:10:26 +0200 Subject: batman-adv: make is_my_mac() check for the current mesh only On a multi-mesh node (a node running more than one batman-adv virtual interface) batadv_is_my_mac() has to check MAC addresses of hard interfaces belonging to the current mesh only. Signed-off-by: Antonio Quartulli Signed-off-by: Marek Lindner --- net/batman-adv/main.c | 5 ++++- net/batman-adv/main.h | 2 +- net/batman-adv/routing.c | 38 ++++++++++++++++++++------------------ net/batman-adv/translation-table.c | 2 +- net/batman-adv/vis.c | 4 ++-- 5 files changed, 28 insertions(+), 23 deletions(-) (limited to 'net/batman-adv') diff --git a/net/batman-adv/main.c b/net/batman-adv/main.c index 0488d70c8c35..fa563e497c48 100644 --- a/net/batman-adv/main.c +++ b/net/batman-adv/main.c @@ -169,7 +169,7 @@ void batadv_mesh_free(struct net_device *soft_iface) atomic_set(&bat_priv->mesh_state, BATADV_MESH_INACTIVE); } -int batadv_is_my_mac(const uint8_t *addr) +int batadv_is_my_mac(struct batadv_priv *bat_priv, const uint8_t *addr) { const struct batadv_hard_iface *hard_iface; @@ -178,6 +178,9 @@ int batadv_is_my_mac(const uint8_t *addr) if (hard_iface->if_status != BATADV_IF_ACTIVE) continue; + if (hard_iface->soft_iface != bat_priv->soft_iface) + continue; + if (batadv_compare_eth(hard_iface->net_dev->dev_addr, addr)) { rcu_read_unlock(); return 1; diff --git a/net/batman-adv/main.h b/net/batman-adv/main.h index ced08b936a96..d40910dfc8ea 100644 --- a/net/batman-adv/main.h +++ b/net/batman-adv/main.h @@ -162,7 +162,7 @@ extern struct workqueue_struct *batadv_event_workqueue; int batadv_mesh_init(struct net_device *soft_iface); void batadv_mesh_free(struct net_device *soft_iface); -int batadv_is_my_mac(const uint8_t *addr); +int batadv_is_my_mac(struct batadv_priv *bat_priv, const uint8_t *addr); struct batadv_hard_iface * batadv_seq_print_text_primary_if_get(struct seq_file *seq); int batadv_batman_skb_recv(struct sk_buff *skb, struct net_device *dev, diff --git a/net/batman-adv/routing.c b/net/batman-adv/routing.c index 5ee21cebbbb0..319f2906c71a 100644 --- a/net/batman-adv/routing.c +++ b/net/batman-adv/routing.c @@ -402,7 +402,7 @@ int batadv_recv_icmp_packet(struct sk_buff *skb, goto out; /* not for me */ - if (!batadv_is_my_mac(ethhdr->h_dest)) + if (!batadv_is_my_mac(bat_priv, ethhdr->h_dest)) goto out; icmp_packet = (struct batadv_icmp_packet_rr *)skb->data; @@ -416,7 +416,7 @@ int batadv_recv_icmp_packet(struct sk_buff *skb, } /* packet for me */ - if (batadv_is_my_mac(icmp_packet->dst)) + if (batadv_is_my_mac(bat_priv, icmp_packet->dst)) return batadv_recv_my_icmp_packet(bat_priv, skb, hdr_size); /* TTL exceeded */ @@ -548,7 +548,8 @@ batadv_find_ifalter_router(struct batadv_orig_node *primary_orig, return router; } -static int batadv_check_unicast_packet(struct sk_buff *skb, int hdr_size) +static int batadv_check_unicast_packet(struct batadv_priv *bat_priv, + struct sk_buff *skb, int hdr_size) { struct ethhdr *ethhdr; @@ -567,7 +568,7 @@ static int batadv_check_unicast_packet(struct sk_buff *skb, int hdr_size) return -1; /* not for me */ - if (!batadv_is_my_mac(ethhdr->h_dest)) + if (!batadv_is_my_mac(bat_priv, ethhdr->h_dest)) return -1; return 0; @@ -582,7 +583,7 @@ int batadv_recv_tt_query(struct sk_buff *skb, struct batadv_hard_iface *recv_if) char tt_flag; size_t packet_size; - if (batadv_check_unicast_packet(skb, hdr_size) < 0) + if (batadv_check_unicast_packet(bat_priv, skb, hdr_size) < 0) return NET_RX_DROP; /* I could need to modify it */ @@ -614,7 +615,7 @@ int batadv_recv_tt_query(struct sk_buff *skb, struct batadv_hard_iface *recv_if) case BATADV_TT_RESPONSE: batadv_inc_counter(bat_priv, BATADV_CNT_TT_RESPONSE_RX); - if (batadv_is_my_mac(tt_query->dst)) { + if (batadv_is_my_mac(bat_priv, tt_query->dst)) { /* packet needs to be linearized to access the TT * changes */ @@ -657,14 +658,15 @@ int batadv_recv_roam_adv(struct sk_buff *skb, struct batadv_hard_iface *recv_if) struct batadv_roam_adv_packet *roam_adv_packet; struct batadv_orig_node *orig_node; - if (batadv_check_unicast_packet(skb, sizeof(*roam_adv_packet)) < 0) + if (batadv_check_unicast_packet(bat_priv, skb, + sizeof(*roam_adv_packet)) < 0) goto out; batadv_inc_counter(bat_priv, BATADV_CNT_TT_ROAM_ADV_RX); roam_adv_packet = (struct batadv_roam_adv_packet *)skb->data; - if (!batadv_is_my_mac(roam_adv_packet->dst)) + if (!batadv_is_my_mac(bat_priv, roam_adv_packet->dst)) return batadv_route_unicast_packet(skb, recv_if); /* check if it is a backbone gateway. we don't accept @@ -967,7 +969,7 @@ static int batadv_check_unicast_ttvn(struct batadv_priv *bat_priv, * last time) the packet had an updated information or not */ curr_ttvn = (uint8_t)atomic_read(&bat_priv->tt.vn); - if (!batadv_is_my_mac(unicast_packet->dest)) { + if (!batadv_is_my_mac(bat_priv, unicast_packet->dest)) { orig_node = batadv_orig_hash_find(bat_priv, unicast_packet->dest); /* if it is not possible to find the orig_node representing the @@ -1044,14 +1046,14 @@ int batadv_recv_unicast_packet(struct sk_buff *skb, if (is4addr) hdr_size = sizeof(*unicast_4addr_packet); - if (batadv_check_unicast_packet(skb, hdr_size) < 0) + if (batadv_check_unicast_packet(bat_priv, skb, hdr_size) < 0) return NET_RX_DROP; if (!batadv_check_unicast_ttvn(bat_priv, skb)) return NET_RX_DROP; /* packet for me */ - if (batadv_is_my_mac(unicast_packet->dest)) { + if (batadv_is_my_mac(bat_priv, unicast_packet->dest)) { if (is4addr) { batadv_dat_inc_counter(bat_priv, unicast_4addr_packet->subtype); @@ -1088,7 +1090,7 @@ int batadv_recv_ucast_frag_packet(struct sk_buff *skb, struct sk_buff *new_skb = NULL; int ret; - if (batadv_check_unicast_packet(skb, hdr_size) < 0) + if (batadv_check_unicast_packet(bat_priv, skb, hdr_size) < 0) return NET_RX_DROP; if (!batadv_check_unicast_ttvn(bat_priv, skb)) @@ -1097,7 +1099,7 @@ int batadv_recv_ucast_frag_packet(struct sk_buff *skb, unicast_packet = (struct batadv_unicast_frag_packet *)skb->data; /* packet for me */ - if (batadv_is_my_mac(unicast_packet->dest)) { + if (batadv_is_my_mac(bat_priv, unicast_packet->dest)) { ret = batadv_frag_reassemble_skb(skb, bat_priv, &new_skb); if (ret == NET_RX_DROP) @@ -1151,13 +1153,13 @@ int batadv_recv_bcast_packet(struct sk_buff *skb, goto out; /* ignore broadcasts sent by myself */ - if (batadv_is_my_mac(ethhdr->h_source)) + if (batadv_is_my_mac(bat_priv, ethhdr->h_source)) goto out; bcast_packet = (struct batadv_bcast_packet *)skb->data; /* ignore broadcasts originated by myself */ - if (batadv_is_my_mac(bcast_packet->orig)) + if (batadv_is_my_mac(bat_priv, bcast_packet->orig)) goto out; if (bcast_packet->header.ttl < 2) @@ -1243,14 +1245,14 @@ int batadv_recv_vis_packet(struct sk_buff *skb, ethhdr = (struct ethhdr *)skb_mac_header(skb); /* not for me */ - if (!batadv_is_my_mac(ethhdr->h_dest)) + if (!batadv_is_my_mac(bat_priv, ethhdr->h_dest)) return NET_RX_DROP; /* ignore own packets */ - if (batadv_is_my_mac(vis_packet->vis_orig)) + if (batadv_is_my_mac(bat_priv, vis_packet->vis_orig)) return NET_RX_DROP; - if (batadv_is_my_mac(vis_packet->sender_orig)) + if (batadv_is_my_mac(bat_priv, vis_packet->sender_orig)) return NET_RX_DROP; switch (vis_packet->vis_type) { diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c index 98a66a021a60..7abee19567e9 100644 --- a/net/batman-adv/translation-table.c +++ b/net/batman-adv/translation-table.c @@ -1953,7 +1953,7 @@ out: bool batadv_send_tt_response(struct batadv_priv *bat_priv, struct batadv_tt_query_packet *tt_request) { - if (batadv_is_my_mac(tt_request->dst)) { + if (batadv_is_my_mac(bat_priv, tt_request->dst)) { /* don't answer backbone gws! */ if (batadv_bla_is_backbone_gw_orig(bat_priv, tt_request->src)) return true; diff --git a/net/batman-adv/vis.c b/net/batman-adv/vis.c index c053244b97bd..6a1e646be96d 100644 --- a/net/batman-adv/vis.c +++ b/net/batman-adv/vis.c @@ -477,7 +477,7 @@ void batadv_receive_client_update_packet(struct batadv_priv *bat_priv, /* Are we the target for this VIS packet? */ if (vis_server == BATADV_VIS_TYPE_SERVER_SYNC && - batadv_is_my_mac(vis_packet->target_orig)) + batadv_is_my_mac(bat_priv, vis_packet->target_orig)) are_target = 1; spin_lock_bh(&bat_priv->vis.hash_lock); @@ -496,7 +496,7 @@ void batadv_receive_client_update_packet(struct batadv_priv *bat_priv, batadv_send_list_add(bat_priv, info); /* ... we're not the recipient (and thus need to forward). */ - } else if (!batadv_is_my_mac(packet->target_orig)) { + } else if (!batadv_is_my_mac(bat_priv, packet->target_orig)) { batadv_send_list_add(bat_priv, info); } -- cgit v1.2.3