diff options
author | Marek Lindner <lindner_marek@yahoo.de> | 2010-09-05 01:58:34 +0200 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-09-05 00:29:49 -0700 |
commit | 6a0e9fa88df9e3a517a2fd317706aefa10a43191 (patch) | |
tree | 2dcf657e159d168a65af81cb65d21108cae48ead /drivers/staging/batman-adv/routing.c | |
parent | bf3264f6d1039e68ec9881447808327c0260ae61 (diff) |
Staging: batman-adv: attach each hard-interface to a soft-interface
This patch replaces the static bat0 interface with a dynamic/abstracted
approach. It is now possible to create multiple batX interfaces by
assigning hard interfaces to them. Each batX interface acts as an
independent mesh network. A soft interface is removed once no hard
interface references it any longer.
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
[sven.eckelmann@gmx.de: Rework on top of current version]
Signed-off-by: Sven Eckelmann <sven.eckelmann@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/staging/batman-adv/routing.c')
-rw-r--r-- | drivers/staging/batman-adv/routing.c | 163 |
1 files changed, 89 insertions, 74 deletions
diff --git a/drivers/staging/batman-adv/routing.c b/drivers/staging/batman-adv/routing.c index 6009adc80b8..3cae7c4471e 100644 --- a/drivers/staging/batman-adv/routing.c +++ b/drivers/staging/batman-adv/routing.c @@ -38,6 +38,7 @@ static DECLARE_WAIT_QUEUE_HEAD(thread_wait); void slide_own_bcast_window(struct batman_if *batman_if) { + struct bat_priv *bat_priv = netdev_priv(batman_if->soft_iface); HASHIT(hashit); struct orig_node *orig_node; TYPE_OF_WORD *word; @@ -49,7 +50,7 @@ void slide_own_bcast_window(struct batman_if *batman_if) orig_node = hashit.bucket->data; word = &(orig_node->bcast_own[batman_if->if_num * NUM_WORDS]); - bit_get_packet(word, 1, 0); + bit_get_packet(bat_priv, word, 1, 0); orig_node->bcast_own_sum[batman_if->if_num] = bit_packet_count(word); } @@ -57,7 +58,7 @@ void slide_own_bcast_window(struct batman_if *batman_if) spin_unlock_irqrestore(&orig_hash_lock, flags); } -static void update_HNA(struct orig_node *orig_node, +static void update_HNA(struct bat_priv *bat_priv, struct orig_node *orig_node, unsigned char *hna_buff, int hna_buff_len) { if ((hna_buff_len != orig_node->hna_buff_len) || @@ -66,27 +67,27 @@ static void update_HNA(struct orig_node *orig_node, (memcmp(orig_node->hna_buff, hna_buff, hna_buff_len) != 0))) { if (orig_node->hna_buff_len > 0) - hna_global_del_orig(orig_node, + hna_global_del_orig(bat_priv, orig_node, "originator changed hna"); if ((hna_buff_len > 0) && (hna_buff != NULL)) - hna_global_add_orig(orig_node, hna_buff, hna_buff_len); + hna_global_add_orig(bat_priv, orig_node, + hna_buff, hna_buff_len); } } -static void update_route(struct orig_node *orig_node, +static void update_route(struct bat_priv *bat_priv, + struct orig_node *orig_node, struct neigh_node *neigh_node, unsigned char *hna_buff, int hna_buff_len) { - /* FIXME: each orig_node->batman_if will be attached to a softif */ - struct bat_priv *bat_priv = netdev_priv(soft_device); - /* route deleted */ if ((orig_node->router != NULL) && (neigh_node == NULL)) { bat_dbg(DBG_ROUTES, bat_priv, "Deleting route towards: %pM\n", orig_node->orig); - hna_global_del_orig(orig_node, "originator timed out"); + hna_global_del_orig(bat_priv, orig_node, + "originator timed out"); /* route added */ } else if ((orig_node->router == NULL) && (neigh_node != NULL)) { @@ -94,7 +95,8 @@ static void update_route(struct orig_node *orig_node, bat_dbg(DBG_ROUTES, bat_priv, "Adding route towards: %pM (via %pM)\n", orig_node->orig, neigh_node->addr); - hna_global_add_orig(orig_node, hna_buff, hna_buff_len); + hna_global_add_orig(bat_priv, orig_node, + hna_buff, hna_buff_len); /* route changed */ } else { @@ -109,19 +111,20 @@ static void update_route(struct orig_node *orig_node, } -void update_routes(struct orig_node *orig_node, - struct neigh_node *neigh_node, - unsigned char *hna_buff, int hna_buff_len) +void update_routes(struct bat_priv *bat_priv, struct orig_node *orig_node, + struct neigh_node *neigh_node, unsigned char *hna_buff, + int hna_buff_len) { if (orig_node == NULL) return; if (orig_node->router != neigh_node) - update_route(orig_node, neigh_node, hna_buff, hna_buff_len); + update_route(bat_priv, orig_node, neigh_node, + hna_buff, hna_buff_len); /* may be just HNA changed */ else - update_HNA(orig_node, hna_buff, hna_buff_len); + update_HNA(bat_priv, orig_node, hna_buff, hna_buff_len); } static int is_bidirectional_neigh(struct orig_node *orig_node, @@ -129,8 +132,7 @@ static int is_bidirectional_neigh(struct orig_node *orig_node, struct batman_packet *batman_packet, struct batman_if *if_incoming) { - /* FIXME: each orig_node->batman_if will be attached to a softif */ - struct bat_priv *bat_priv = netdev_priv(soft_device); + struct bat_priv *bat_priv = netdev_priv(if_incoming->soft_iface); struct neigh_node *neigh_node = NULL, *tmp_neigh_node = NULL; unsigned char total_count; @@ -234,14 +236,14 @@ static int is_bidirectional_neigh(struct orig_node *orig_node, return 0; } -static void update_orig(struct orig_node *orig_node, struct ethhdr *ethhdr, +static void update_orig(struct bat_priv *bat_priv, + struct orig_node *orig_node, + struct ethhdr *ethhdr, struct batman_packet *batman_packet, struct batman_if *if_incoming, unsigned char *hna_buff, int hna_buff_len, char is_duplicate) { - /* FIXME: get bat_priv */ - struct bat_priv *bat_priv = netdev_priv(soft_device); struct neigh_node *neigh_node = NULL, *tmp_neigh_node = NULL; int tmp_hna_buff_len; @@ -267,12 +269,11 @@ static void update_orig(struct orig_node *orig_node, struct ethhdr *ethhdr, if (!neigh_node) { struct orig_node *orig_tmp; - orig_tmp = get_orig_node(ethhdr->h_source); + orig_tmp = get_orig_node(bat_priv, ethhdr->h_source); if (!orig_tmp) return; - neigh_node = create_neighbor(orig_node, - orig_tmp, + neigh_node = create_neighbor(orig_node, orig_tmp, ethhdr->h_source, if_incoming); if (!neigh_node) return; @@ -314,11 +315,13 @@ static void update_orig(struct orig_node *orig_node, struct ethhdr *ethhdr, >= neigh_node->orig_node->bcast_own_sum[if_incoming->if_num]))) goto update_hna; - update_routes(orig_node, neigh_node, hna_buff, tmp_hna_buff_len); + update_routes(bat_priv, orig_node, neigh_node, + hna_buff, tmp_hna_buff_len); return; update_hna: - update_routes(orig_node, orig_node->router, hna_buff, tmp_hna_buff_len); + update_routes(bat_priv, orig_node, orig_node->router, + hna_buff, tmp_hna_buff_len); } /* checks whether the host restarted and is in the protection time. @@ -326,12 +329,10 @@ update_hna: * 0 if the packet is to be accepted * 1 if the packet is to be ignored. */ -static int window_protected(int32_t seq_num_diff, - unsigned long *last_reset) +static int window_protected(struct bat_priv *bat_priv, + int32_t seq_num_diff, + unsigned long *last_reset) { - /* FIXME: each orig_node->batman_if will be attached to a softif */ - struct bat_priv *bat_priv = netdev_priv(soft_device); - if ((seq_num_diff <= -TQ_LOCAL_WINDOW_SIZE) || (seq_num_diff >= EXPECTED_SEQNO_RANGE)) { if (time_after(jiffies, *last_reset + @@ -360,8 +361,7 @@ static char count_real_packets(struct ethhdr *ethhdr, struct batman_packet *batman_packet, struct batman_if *if_incoming) { - /* FIXME: each orig_node->batman_if will be attached to a softif */ - struct bat_priv *bat_priv = netdev_priv(soft_device); + struct bat_priv *bat_priv = netdev_priv(if_incoming->soft_iface); struct orig_node *orig_node; struct neigh_node *tmp_neigh_node; char is_duplicate = 0; @@ -369,14 +369,15 @@ static char count_real_packets(struct ethhdr *ethhdr, int need_update = 0; int set_mark; - orig_node = get_orig_node(batman_packet->orig); + orig_node = get_orig_node(bat_priv, batman_packet->orig); if (orig_node == NULL) return 0; seq_diff = batman_packet->seqno - orig_node->last_real_seqno; /* signalize caller that the packet is to be dropped. */ - if (window_protected(seq_diff, &orig_node->batman_seqno_reset)) + if (window_protected(bat_priv, seq_diff, + &orig_node->batman_seqno_reset)) return -1; list_for_each_entry(tmp_neigh_node, &orig_node->neigh_list, list) { @@ -392,8 +393,9 @@ static char count_real_packets(struct ethhdr *ethhdr, set_mark = 0; /* if the window moved, set the update flag. */ - need_update |= bit_get_packet(tmp_neigh_node->real_bits, - seq_diff, set_mark); + need_update |= bit_get_packet(bat_priv, + tmp_neigh_node->real_bits, + seq_diff, set_mark); tmp_neigh_node->real_packet_count = bit_packet_count(tmp_neigh_node->real_bits); @@ -521,8 +523,7 @@ void receive_bat_packet(struct ethhdr *ethhdr, unsigned char *hna_buff, int hna_buff_len, struct batman_if *if_incoming) { - /* FIXME: each orig_node->batman_if will be attached to a softif */ - struct bat_priv *bat_priv = netdev_priv(soft_device); + struct bat_priv *bat_priv = netdev_priv(if_incoming->soft_iface); struct batman_if *batman_if; struct orig_node *orig_neigh_node, *orig_node; char has_directlink_flag; @@ -609,7 +610,7 @@ void receive_bat_packet(struct ethhdr *ethhdr, TYPE_OF_WORD *word; int offset; - orig_neigh_node = get_orig_node(ethhdr->h_source); + orig_neigh_node = get_orig_node(bat_priv, ethhdr->h_source); if (!orig_neigh_node) return; @@ -641,7 +642,7 @@ void receive_bat_packet(struct ethhdr *ethhdr, return; } - orig_node = get_orig_node(batman_packet->orig); + orig_node = get_orig_node(bat_priv, batman_packet->orig); if (orig_node == NULL) return; @@ -677,7 +678,8 @@ void receive_bat_packet(struct ethhdr *ethhdr, /* if sender is a direct neighbor the sender mac equals * originator mac */ orig_neigh_node = (is_single_hop_neigh ? - orig_node : get_orig_node(ethhdr->h_source)); + orig_node : + get_orig_node(bat_priv, ethhdr->h_source)); if (orig_neigh_node == NULL) return; @@ -699,7 +701,7 @@ void receive_bat_packet(struct ethhdr *ethhdr, (!is_duplicate || ((orig_node->last_real_seqno == batman_packet->seqno) && (orig_node->last_ttl - 3 <= batman_packet->ttl)))) - update_orig(orig_node, ethhdr, batman_packet, + update_orig(bat_priv, orig_node, ethhdr, batman_packet, if_incoming, hna_buff, hna_buff_len, is_duplicate); mark_bonding_address(bat_priv, orig_node, @@ -778,10 +780,11 @@ int recv_bat_packet(struct sk_buff *skb, return NET_RX_SUCCESS; } -static int recv_my_icmp_packet(struct sk_buff *skb, size_t icmp_len) +static int recv_my_icmp_packet(struct sk_buff *skb, + struct batman_if *recv_if, size_t icmp_len) { /* FIXME: each batman_if will be attached to a softif */ - struct bat_priv *bat_priv = netdev_priv(soft_device); + struct bat_priv *bat_priv = netdev_priv(recv_if->soft_iface); struct orig_node *orig_node; struct icmp_packet_rr *icmp_packet; struct ethhdr *ethhdr; @@ -840,10 +843,11 @@ static int recv_my_icmp_packet(struct sk_buff *skb, size_t icmp_len) return ret; } -static int recv_icmp_ttl_exceeded(struct sk_buff *skb, size_t icmp_len) +static int recv_icmp_ttl_exceeded(struct sk_buff *skb, + struct batman_if *recv_if, size_t icmp_len) { /* FIXME: each batman_if will be attached to a softif */ - struct bat_priv *bat_priv = netdev_priv(soft_device); + struct bat_priv *bat_priv = netdev_priv(recv_if->soft_iface); struct orig_node *orig_node; struct icmp_packet *icmp_packet; struct ethhdr *ethhdr; @@ -904,7 +908,7 @@ static int recv_icmp_ttl_exceeded(struct sk_buff *skb, size_t icmp_len) } -int recv_icmp_packet(struct sk_buff *skb) +int recv_icmp_packet(struct sk_buff *skb, struct batman_if *recv_if) { struct icmp_packet_rr *icmp_packet; struct ethhdr *ethhdr; @@ -951,11 +955,11 @@ int recv_icmp_packet(struct sk_buff *skb) /* packet for me */ if (is_my_mac(icmp_packet->dst)) - return recv_my_icmp_packet(skb, hdr_size); + return recv_my_icmp_packet(skb, recv_if, hdr_size); /* TTL exceeded */ if (icmp_packet->ttl < 2) - return recv_icmp_ttl_exceeded(skb, hdr_size); + return recv_icmp_ttl_exceeded(skb, recv_if, hdr_size); ret = NET_RX_DROP; @@ -996,10 +1000,9 @@ int recv_icmp_packet(struct sk_buff *skb) /* find a suitable router for this originator, and use * bonding if possible. */ struct neigh_node *find_router(struct orig_node *orig_node, - struct batman_if *recv_if) + struct batman_if *recv_if) { - /* FIXME: each orig_node->batman_if will be attached to a softif */ - struct bat_priv *bat_priv = netdev_priv(soft_device); + struct bat_priv *bat_priv; struct orig_node *primary_orig_node; struct orig_node *router_orig; struct neigh_node *router, *first_candidate, *best_router; @@ -1015,9 +1018,14 @@ struct neigh_node *find_router(struct orig_node *orig_node, /* without bonding, the first node should * always choose the default router. */ + if (!recv_if) + return orig_node->router; + + bat_priv = netdev_priv(recv_if->soft_iface); bonding_enabled = atomic_read(&bat_priv->bonding_enabled); - if (!bonding_enabled && (recv_if == NULL)) - return orig_node->router; + + if (!bonding_enabled) + return orig_node->router; router_orig = orig_node->router->orig_node; @@ -1094,7 +1102,7 @@ static int check_unicast_packet(struct sk_buff *skb, int hdr_size) if (unlikely(!pskb_may_pull(skb, hdr_size))) return -1; - ethhdr = (struct ethhdr *) skb_mac_header(skb); + ethhdr = (struct ethhdr *)skb_mac_header(skb); /* packet with unicast indication but broadcast recipient */ if (is_bcast(ethhdr->h_dest)) @@ -1111,17 +1119,24 @@ static int check_unicast_packet(struct sk_buff *skb, int hdr_size) return 0; } -static int route_unicast_packet(struct sk_buff *skb, struct batman_if *recv_if, - int hdr_size) +static int route_unicast_packet(struct sk_buff *skb, + struct batman_if *recv_if, int hdr_size) { struct orig_node *orig_node; struct neigh_node *router; struct batman_if *batman_if; uint8_t dstaddr[ETH_ALEN]; unsigned long flags; - struct unicast_packet *unicast_packet = - (struct unicast_packet *) skb->data; - struct ethhdr *ethhdr = (struct ethhdr *) skb_mac_header(skb); + struct unicast_packet *unicast_packet; + struct ethhdr *ethhdr = (struct ethhdr *)skb_mac_header(skb); + + unicast_packet = (struct unicast_packet *)skb->data; + + /* packet for me */ + if (is_my_mac(unicast_packet->dest)) { + interface_rx(recv_if->soft_iface, skb, hdr_size); + return NET_RX_SUCCESS; + } /* TTL exceeded */ if (unicast_packet->ttl < 2) { @@ -1175,11 +1190,11 @@ int recv_unicast_packet(struct sk_buff *skb, struct batman_if *recv_if) if (check_unicast_packet(skb, hdr_size) < 0) return NET_RX_DROP; - unicast_packet = (struct unicast_packet *) skb->data; + unicast_packet = (struct unicast_packet *)skb->data; /* packet for me */ if (is_my_mac(unicast_packet->dest)) { - interface_rx(skb, hdr_size); + interface_rx(recv_if->soft_iface, skb, hdr_size); return NET_RX_SUCCESS; } @@ -1234,18 +1249,20 @@ int recv_ucast_frag_packet(struct sk_buff *skb, struct batman_if *recv_if) if (!skb) return NET_RX_DROP; - interface_rx(skb, hdr_size); + interface_rx(recv_if->soft_iface, skb, hdr_size); return NET_RX_SUCCESS; } return route_unicast_packet(skb, recv_if, hdr_size); } -int recv_bcast_packet(struct sk_buff *skb) + +int recv_bcast_packet(struct sk_buff *skb, struct batman_if *batman_if) { struct orig_node *orig_node; struct bcast_packet *bcast_packet; struct ethhdr *ethhdr; + struct bat_priv *bat_priv = netdev_priv(batman_if->soft_iface); int hdr_size = sizeof(struct bcast_packet); int32_t seq_diff; unsigned long flags; @@ -1297,31 +1314,32 @@ int recv_bcast_packet(struct sk_buff *skb) seq_diff = ntohl(bcast_packet->seqno) - orig_node->last_bcast_seqno; /* check whether the packet is old and the host just restarted. */ - if (window_protected(seq_diff, &orig_node->bcast_seqno_reset)) { + if (window_protected(bat_priv, seq_diff, + &orig_node->bcast_seqno_reset)) { spin_unlock_irqrestore(&orig_hash_lock, flags); return NET_RX_DROP; } /* mark broadcast in flood history, update window position * if required. */ - if (bit_get_packet(orig_node->bcast_bits, seq_diff, 1)) + if (bit_get_packet(bat_priv, orig_node->bcast_bits, seq_diff, 1)) orig_node->last_bcast_seqno = ntohl(bcast_packet->seqno); spin_unlock_irqrestore(&orig_hash_lock, flags); /* rebroadcast packet */ - add_bcast_packet_to_list(skb); + add_bcast_packet_to_list(bat_priv, skb); /* broadcast for me */ - interface_rx(skb, hdr_size); + interface_rx(batman_if->soft_iface, skb, hdr_size); return NET_RX_SUCCESS; } -int recv_vis_packet(struct sk_buff *skb) +int recv_vis_packet(struct sk_buff *skb, struct batman_if *batman_if) { struct vis_packet *vis_packet; struct ethhdr *ethhdr; - struct bat_priv *bat_priv; + struct bat_priv *bat_priv = netdev_priv(batman_if->soft_iface); int hdr_size = sizeof(struct vis_packet); /* keep skb linear */ @@ -1331,7 +1349,7 @@ int recv_vis_packet(struct sk_buff *skb) if (unlikely(!pskb_may_pull(skb, hdr_size))) return NET_RX_DROP; - vis_packet = (struct vis_packet *) skb->data; + vis_packet = (struct vis_packet *)skb->data; ethhdr = (struct ethhdr *)skb_mac_header(skb); /* not for me */ @@ -1345,9 +1363,6 @@ int recv_vis_packet(struct sk_buff *skb) if (is_my_mac(vis_packet->sender_orig)) return NET_RX_DROP; - /* FIXME: each batman_if will be attached to a softif */ - bat_priv = netdev_priv(soft_device); - switch (vis_packet->vis_type) { case VIS_TYPE_SERVER_SYNC: receive_server_sync_packet(bat_priv, vis_packet, |