From: Simon Wunderlich simon@open-mesh.com

Remove bonding and interface alternating code - it will be replaced by a new, network-wide multi interface optimization which enables both bonding and interface alternating in a better way.

Keep the sysfs and find router function though, this will be needed later.

Signed-off-by: Simon Wunderlich simon@open-mesh.com Signed-off-by: Marek Lindner mareklindner@neomailbox.ch Signed-off-by: Antonio Quartulli antonio@meshcoding.com --- net/batman-adv/bat_iv_ogm.c | 5 - net/batman-adv/originator.c | 15 +-- net/batman-adv/routing.c | 300 ++------------------------------------------ net/batman-adv/routing.h | 9 -- net/batman-adv/types.h | 10 +- 5 files changed, 12 insertions(+), 327 deletions(-)

diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c index 278d78b..48f5d35 100644 --- a/net/batman-adv/bat_iv_ogm.c +++ b/net/batman-adv/bat_iv_ogm.c @@ -974,8 +974,6 @@ batadv_iv_ogm_orig_update(struct batadv_priv *bat_priv, neigh_node->last_ttl = batadv_ogm_packet->ttl; }

- batadv_bonding_candidate_add(bat_priv, orig_node, neigh_node); - /* if this neighbor already is our next hop there is nothing * to change */ @@ -1424,9 +1422,6 @@ static void batadv_iv_ogm_process(const struct ethhdr *ethhdr, is_bidirect = batadv_iv_ogm_calc_tq(orig_node, orig_neigh_node, batadv_ogm_packet, if_incoming);

- batadv_bonding_save_primary(orig_node, orig_neigh_node, - batadv_ogm_packet); - /* update ranking if it is not a duplicate or has the same * seqno and similar ttl as the non-duplicate */ diff --git a/net/batman-adv/originator.c b/net/batman-adv/originator.c index 04a6d51..03db87f 100644 --- a/net/batman-adv/originator.c +++ b/net/batman-adv/originator.c @@ -196,8 +196,6 @@ batadv_neigh_node_new(struct batadv_hard_iface *hard_iface, neigh_node->if_incoming = hard_iface; neigh_node->orig_node = orig_node;

- INIT_LIST_HEAD(&neigh_node->bonding_list); - /* extra reference for return */ atomic_set(&neigh_node->refcount, 2);

@@ -208,20 +206,13 @@ out: static void batadv_orig_node_free_rcu(struct rcu_head *rcu) { struct hlist_node *node_tmp; - struct batadv_neigh_node *neigh_node, *tmp_neigh_node; + struct batadv_neigh_node *neigh_node; struct batadv_orig_node *orig_node;

orig_node = container_of(rcu, struct batadv_orig_node, rcu);

spin_lock_bh(&orig_node->neigh_list_lock);

- /* for all bonding members ... */ - list_for_each_entry_safe(neigh_node, tmp_neigh_node, - &orig_node->bond_list, bonding_list) { - list_del_rcu(&neigh_node->bonding_list); - batadv_neigh_node_free_ref(neigh_node); - } - /* for all neighbors towards this originator ... */ hlist_for_each_entry_safe(neigh_node, node_tmp, &orig_node->neigh_list, list) { @@ -325,7 +316,6 @@ struct batadv_orig_node *batadv_orig_node_new(struct batadv_priv *bat_priv, return NULL;

INIT_HLIST_HEAD(&orig_node->neigh_list); - INIT_LIST_HEAD(&orig_node->bond_list); INIT_LIST_HEAD(&orig_node->vlan_list); spin_lock_init(&orig_node->bcast_seqno_lock); spin_lock_init(&orig_node->neigh_list_lock); @@ -350,8 +340,6 @@ struct batadv_orig_node *batadv_orig_node_new(struct batadv_priv *bat_priv, orig_node->bcast_seqno_reset = reset_time; orig_node->batman_seqno_reset = reset_time;

- atomic_set(&orig_node->bond_candidates, 0); - /* create a vlan object for the "untagged" LAN */ vlan = batadv_orig_node_vlan_new(orig_node, BATADV_NO_FLAGS); if (!vlan) @@ -416,7 +404,6 @@ batadv_purge_orig_neighbors(struct batadv_priv *bat_priv, neigh_purged = true;

hlist_del_rcu(&neigh_node->list); - batadv_bonding_candidate_del(orig_node, neigh_node); batadv_neigh_node_free_ref(neigh_node); } else { /* store the best_neighbour if this is the first diff --git a/net/batman-adv/routing.c b/net/batman-adv/routing.c index 7e8aa17..4fd2687 100644 --- a/net/batman-adv/routing.c +++ b/net/batman-adv/routing.c @@ -96,115 +96,6 @@ out: batadv_neigh_node_free_ref(router); }

-/* caller must hold the neigh_list_lock */ -void batadv_bonding_candidate_del(struct batadv_orig_node *orig_node, - struct batadv_neigh_node *neigh_node) -{ - /* this neighbor is not part of our candidate list */ - if (list_empty(&neigh_node->bonding_list)) - goto out; - - list_del_rcu(&neigh_node->bonding_list); - INIT_LIST_HEAD(&neigh_node->bonding_list); - batadv_neigh_node_free_ref(neigh_node); - atomic_dec(&orig_node->bond_candidates); - -out: - return; -} - -/** - * batadv_bonding_candidate_add - consider a new link for bonding mode towards - * the given originator - * @bat_priv: the bat priv with all the soft interface information - * @orig_node: the target node - * @neigh_node: the neighbor representing the new link to consider for bonding - * mode - */ -void batadv_bonding_candidate_add(struct batadv_priv *bat_priv, - struct batadv_orig_node *orig_node, - struct batadv_neigh_node *neigh_node) -{ - struct batadv_algo_ops *bao = bat_priv->bat_algo_ops; - struct batadv_neigh_node *tmp_neigh_node, *router = NULL; - uint8_t interference_candidate = 0; - - spin_lock_bh(&orig_node->neigh_list_lock); - - /* only consider if it has the same primary address ... */ - if (!batadv_compare_eth(orig_node->orig, - neigh_node->orig_node->primary_addr)) - goto candidate_del; - - router = batadv_orig_node_get_router(orig_node); - if (!router) - goto candidate_del; - - - /* ... and is good enough to be considered */ - if (bao->bat_neigh_is_equiv_or_better(neigh_node, router)) - goto candidate_del; - - /* check if we have another candidate with the same mac address or - * interface. If we do, we won't select this candidate because of - * possible interference. - */ - hlist_for_each_entry_rcu(tmp_neigh_node, - &orig_node->neigh_list, list) { - if (tmp_neigh_node == neigh_node) - continue; - - /* we only care if the other candidate is even - * considered as candidate. - */ - if (list_empty(&tmp_neigh_node->bonding_list)) - continue; - - if ((neigh_node->if_incoming == tmp_neigh_node->if_incoming) || - (batadv_compare_eth(neigh_node->addr, - tmp_neigh_node->addr))) { - interference_candidate = 1; - break; - } - } - - /* don't care further if it is an interference candidate */ - if (interference_candidate) - goto candidate_del; - - /* this neighbor already is part of our candidate list */ - if (!list_empty(&neigh_node->bonding_list)) - goto out; - - if (!atomic_inc_not_zero(&neigh_node->refcount)) - goto out; - - list_add_rcu(&neigh_node->bonding_list, &orig_node->bond_list); - atomic_inc(&orig_node->bond_candidates); - goto out; - -candidate_del: - batadv_bonding_candidate_del(orig_node, neigh_node); - -out: - spin_unlock_bh(&orig_node->neigh_list_lock); - - if (router) - batadv_neigh_node_free_ref(router); -} - -/* copy primary address for bonding */ -void -batadv_bonding_save_primary(const struct batadv_orig_node *orig_node, - struct batadv_orig_node *orig_neigh_node, - const struct batadv_ogm_packet *batman_ogm_packet) -{ - if (!(batman_ogm_packet->flags & BATADV_PRIMARIES_FIRST_HOP)) - return; - - memcpy(orig_neigh_node->primary_addr, orig_node->orig, ETH_ALEN); -} - /* checks whether the host restarted and is in the protection time. * returns: * 0 if the packet is to be accepted @@ -459,114 +350,6 @@ out: return ret; }

-/* In the bonding case, send the packets in a round - * robin fashion over the remaining interfaces. - * - * This method rotates the bonding list and increases the - * returned router's refcount. - */ -static struct batadv_neigh_node * -batadv_find_bond_router(struct batadv_orig_node *primary_orig, - const struct batadv_hard_iface *recv_if) -{ - struct batadv_neigh_node *tmp_neigh_node; - struct batadv_neigh_node *router = NULL, *first_candidate = NULL; - - rcu_read_lock(); - list_for_each_entry_rcu(tmp_neigh_node, &primary_orig->bond_list, - bonding_list) { - if (!first_candidate) - first_candidate = tmp_neigh_node; - - /* recv_if == NULL on the first node. */ - if (tmp_neigh_node->if_incoming == recv_if) - continue; - - if (!atomic_inc_not_zero(&tmp_neigh_node->refcount)) - continue; - - router = tmp_neigh_node; - break; - } - - /* use the first candidate if nothing was found. */ - if (!router && first_candidate && - atomic_inc_not_zero(&first_candidate->refcount)) - router = first_candidate; - - if (!router) - goto out; - - /* selected should point to the next element - * after the current router - */ - spin_lock_bh(&primary_orig->neigh_list_lock); - /* this is a list_move(), which unfortunately - * does not exist as rcu version - */ - list_del_rcu(&primary_orig->bond_list); - list_add_rcu(&primary_orig->bond_list, - &router->bonding_list); - spin_unlock_bh(&primary_orig->neigh_list_lock); - -out: - rcu_read_unlock(); - return router; -} - -/** - * batadv_find_ifalter_router - find the best of the remaining candidates which - * are not using this interface - * @bat_priv: the bat priv with all the soft interface information - * @primary_orig: the destination - * @recv_if: the interface that the router returned by this function has to not - * use - * - * Returns the best candidate towards primary_orig that is not using recv_if. - * Increases the returned neighbor's refcount - */ -static struct batadv_neigh_node * -batadv_find_ifalter_router(struct batadv_priv *bat_priv, - struct batadv_orig_node *primary_orig, - const struct batadv_hard_iface *recv_if) -{ - struct batadv_neigh_node *router = NULL, *first_candidate = NULL; - struct batadv_algo_ops *bao = bat_priv->bat_algo_ops; - struct batadv_neigh_node *tmp_neigh_node; - - rcu_read_lock(); - list_for_each_entry_rcu(tmp_neigh_node, &primary_orig->bond_list, - bonding_list) { - if (!first_candidate) - first_candidate = tmp_neigh_node; - - /* recv_if == NULL on the first node. */ - if (tmp_neigh_node->if_incoming == recv_if) - continue; - - if (router && bao->bat_neigh_cmp(tmp_neigh_node, router)) - continue; - - if (!atomic_inc_not_zero(&tmp_neigh_node->refcount)) - continue; - - /* decrement refcount of previously selected router */ - if (router) - batadv_neigh_node_free_ref(router); - - /* we found a better router (or at least one valid router) */ - router = tmp_neigh_node; - } - - /* use the first candidate if nothing was found. */ - if (!router && first_candidate && - atomic_inc_not_zero(&first_candidate->refcount)) - router = first_candidate; - - rcu_read_unlock(); - return router; -} - /** * batadv_check_unicast_packet - Check for malformed unicast packets * @bat_priv: the bat priv with all the soft interface information @@ -604,95 +387,30 @@ static int batadv_check_unicast_packet(struct batadv_priv *bat_priv, return 0; }

-/* find a suitable router for this originator, and use - * bonding if possible. increases the found neighbors - * refcount. +/** + * batadv_find_router - find a suitable router for this originator + * @bat_priv: the bat priv with all the soft interface information + * @orig_node: the destination node + * @recv_if: pointer to interface this packet was received on + * + * Returns the router which should be used for this orig_node on + * this interface, or NULL if not available. */ struct batadv_neigh_node * batadv_find_router(struct batadv_priv *bat_priv, struct batadv_orig_node *orig_node, const struct batadv_hard_iface *recv_if) { - struct batadv_orig_node *primary_orig_node; - struct batadv_orig_node *router_orig; struct batadv_neigh_node *router; - static uint8_t zero_mac[ETH_ALEN] = {0, 0, 0, 0, 0, 0}; - int bonding_enabled; - uint8_t *primary_addr;

if (!orig_node) return NULL;

router = batadv_orig_node_get_router(orig_node); - if (!router) - goto err;

- /* without bonding, the first node should - * always choose the default router. - */ - bonding_enabled = atomic_read(&bat_priv->bonding); + /* TODO: fill this later with new bonding mechanism */

- rcu_read_lock(); - /* select default router to output */ - router_orig = router->orig_node; - if (!router_orig) - goto err_unlock; - - if ((!recv_if) && (!bonding_enabled)) - goto return_router; - - primary_addr = router_orig->primary_addr; - - /* if we have something in the primary_addr, we can search - * for a potential bonding candidate. - */ - if (batadv_compare_eth(primary_addr, zero_mac)) - goto return_router; - - /* find the orig_node which has the primary interface. might - * even be the same as our router_orig in many cases - */ - if (batadv_compare_eth(primary_addr, router_orig->orig)) { - primary_orig_node = router_orig; - } else { - primary_orig_node = batadv_orig_hash_find(bat_priv, - primary_addr); - if (!primary_orig_node) - goto return_router; - - batadv_orig_node_free_ref(primary_orig_node); - } - - /* with less than 2 candidates, we can't do any - * bonding and prefer the original router. - */ - if (atomic_read(&primary_orig_node->bond_candidates) < 2) - goto return_router; - - /* all nodes between should choose a candidate which - * is is not on the interface where the packet came - * in. - */ - batadv_neigh_node_free_ref(router); - - if (bonding_enabled) - router = batadv_find_bond_router(primary_orig_node, recv_if); - else - router = batadv_find_ifalter_router(bat_priv, primary_orig_node, - recv_if); - -return_router: - if (router && router->if_incoming->if_status != BATADV_IF_ACTIVE) - goto err_unlock; - - rcu_read_unlock(); return router; -err_unlock: - rcu_read_unlock(); -err: - if (router) - batadv_neigh_node_free_ref(router); - return NULL; }

static int batadv_route_unicast_packet(struct sk_buff *skb, diff --git a/net/batman-adv/routing.h b/net/batman-adv/routing.h index c1eadfa..192f0aa 100644 --- a/net/batman-adv/routing.h +++ b/net/batman-adv/routing.h @@ -44,15 +44,6 @@ struct batadv_neigh_node * batadv_find_router(struct batadv_priv *bat_priv, struct batadv_orig_node *orig_node, const struct batadv_hard_iface *recv_if); -void batadv_bonding_candidate_del(struct batadv_orig_node *orig_node, - struct batadv_neigh_node *neigh_node); -void batadv_bonding_candidate_add(struct batadv_priv *bat_priv, - struct batadv_orig_node *orig_node, - struct batadv_neigh_node *neigh_node); -void batadv_bonding_save_primary(const struct batadv_orig_node *orig_node, - struct batadv_orig_node *orig_neigh_node, - const struct batadv_ogm_packet - *batman_ogm_packet); int batadv_window_protected(struct batadv_priv *bat_priv, int32_t seq_num_diff, unsigned long *last_reset);

diff --git a/net/batman-adv/types.h b/net/batman-adv/types.h index 0430a04..0f68845 100644 --- a/net/batman-adv/types.h +++ b/net/batman-adv/types.h @@ -199,12 +199,10 @@ struct batadv_orig_bat_iv { * last_bcast_seqno) * @last_bcast_seqno: last broadcast sequence number received by this host * @neigh_list: list of potential next hop neighbor towards this orig node - * @neigh_list_lock: lock protecting neigh_list, router and bonding_list + * @neigh_list_lock: lock protecting neigh_list and router * @hash_entry: hlist node for batadv_priv::orig_hash * @bat_priv: pointer to soft_iface this orig node belongs to * @bcast_seqno_lock: lock protecting bcast_bits & last_bcast_seqno - * @bond_candidates: how many candidates are available - * @bond_list: list of bonding candidates * @refcount: number of contexts the object is used * @rcu: struct used for freeing in an RCU-safe manner * @in_coding_list: list of nodes this orig can hear @@ -240,14 +238,12 @@ struct batadv_orig_node { DECLARE_BITMAP(bcast_bits, BATADV_TQ_LOCAL_WINDOW_SIZE); uint32_t last_bcast_seqno; struct hlist_head neigh_list; - /* neigh_list_lock protects: neigh_list, router & bonding_list */ + /* neigh_list_lock protects: neigh_list and router */ spinlock_t neigh_list_lock; struct hlist_node hash_entry; struct batadv_priv *bat_priv; /* bcast_seqno_lock protects: bcast_bits & last_bcast_seqno */ spinlock_t bcast_seqno_lock; - atomic_t bond_candidates; - struct list_head bond_list; atomic_t refcount; struct rcu_head rcu; #ifdef CONFIG_BATMAN_ADV_NC @@ -320,7 +316,6 @@ struct batadv_neigh_bat_iv { * @if_incoming: pointer to incoming hard interface * @last_seen: when last packet via this neighbor was received * @last_ttl: last received ttl from this neigh node - * @bonding_list: list node for batadv_orig_node::bond_list * @refcount: number of contexts the object is used * @rcu: struct used for freeing in an RCU-safe manner * @bat_iv: B.A.T.M.A.N. IV private structure @@ -332,7 +327,6 @@ struct batadv_neigh_node { struct batadv_hard_iface *if_incoming; unsigned long last_seen; uint8_t last_ttl; - struct list_head bonding_list; atomic_t refcount; struct rcu_head rcu; struct batadv_neigh_bat_iv bat_iv;

From: Simon Wunderlich simon@open-mesh.com

For the network wide multi interface optimization there are different routers for each outgoing interface (outgoing from the OGM perspective, incoming for payload traffic). To reflect this, change the router and associated data to a list of routers.

While at it, rename batadv_orig_node_get_router() to batadv_orig_router_get() to follow the new naming scheme.

Signed-off-by: Simon Wunderlich simon@open-mesh.com Signed-off-by: Marek Lindner mareklindner@neomailbox.ch Signed-off-by: Antonio Quartulli antonio@meshcoding.com --- net/batman-adv/bat_iv_ogm.c | 454 +++++++++++++++++++-------------- net/batman-adv/distributed-arp-table.c | 3 +- net/batman-adv/gateway_client.c | 11 +- net/batman-adv/icmp_socket.c | 3 +- net/batman-adv/network-coding.c | 25 +- net/batman-adv/originator.c | 242 +++++++++++++++++- net/batman-adv/originator.h | 12 +- net/batman-adv/routing.c | 38 ++- net/batman-adv/routing.h | 1 + net/batman-adv/translation-table.c | 3 +- net/batman-adv/types.h | 32 ++- 11 files changed, 605 insertions(+), 219 deletions(-)

diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c index 157cc11..1f9fe42 100644 --- a/net/batman-adv/bat_iv_ogm.c +++ b/net/batman-adv/bat_iv_ogm.c @@ -907,21 +907,21 @@ static void batadv_iv_ogm_schedule(struct batadv_hard_iface *hard_iface) * originator * @bat_priv: the bat priv with all the soft interface information * @orig_node: the orig node who originally emitted the ogm packet + * @orig_ifinfo: ifinfo for the outgoing interface of the orig_node * @ethhdr: Ethernet header of the OGM * @batadv_ogm_packet: the ogm packet * @if_incoming: interface where the packet was received * @if_outgoing: interface for which the retransmission should be considered - * @tt_buff: pointer to the tt buffer * @dup_status: the duplicate status of this ogm packet. */ static void batadv_iv_ogm_orig_update(struct batadv_priv *bat_priv, struct batadv_orig_node *orig_node, + struct batadv_orig_ifinfo *orig_ifinfo, const struct ethhdr *ethhdr, const struct batadv_ogm_packet *batadv_ogm_packet, struct batadv_hard_iface *if_incoming, struct batadv_hard_iface *if_outgoing, - const unsigned char *tt_buff, enum batadv_dup_status dup_status) { struct batadv_neigh_ifinfo *neigh_ifinfo = NULL; @@ -1004,14 +1004,14 @@ batadv_iv_ogm_orig_update(struct batadv_priv *bat_priv, spin_unlock_bh(&neigh_node->ifinfo_lock);

if (dup_status == BATADV_NO_DUP) { - orig_node->last_ttl = batadv_ogm_packet->ttl; + orig_ifinfo->last_ttl = batadv_ogm_packet->ttl; neigh_ifinfo->last_ttl = batadv_ogm_packet->ttl; }

/* if this neighbor already is our next hop there is nothing * to change */ - router = batadv_orig_node_get_router(orig_node); + router = batadv_orig_router_get(orig_node, if_outgoing); if (router == neigh_node) goto out;

@@ -1048,7 +1048,7 @@ batadv_iv_ogm_orig_update(struct batadv_priv *bat_priv, goto out; }

- batadv_update_route(bat_priv, orig_node, neigh_node); + batadv_update_route(bat_priv, orig_node, if_outgoing, neigh_node); goto out;

unlock: @@ -1209,6 +1209,7 @@ batadv_iv_ogm_update_seqnos(const struct ethhdr *ethhdr, { struct batadv_priv *bat_priv = netdev_priv(if_incoming->soft_iface); struct batadv_orig_node *orig_node; + struct batadv_orig_ifinfo *orig_ifinfo = NULL; struct batadv_neigh_node *neigh_node; struct batadv_neigh_ifinfo *neigh_ifinfo; int is_dup; @@ -1225,13 +1226,19 @@ batadv_iv_ogm_update_seqnos(const struct ethhdr *ethhdr, if (!orig_node) return BATADV_NO_DUP;

+ orig_ifinfo = batadv_orig_ifinfo_new(orig_node, if_outgoing); + if (WARN_ON(!orig_ifinfo)) { + batadv_orig_node_free_ref(orig_node); + return 0; + } + spin_lock_bh(&orig_node->bat_iv.ogm_cnt_lock); - seq_diff = seqno - orig_node->last_real_seqno; + seq_diff = seqno - orig_ifinfo->last_real_seqno;

/* signalize caller that the packet is to be dropped. */ if (!hlist_empty(&orig_node->neigh_list) && batadv_window_protected(bat_priv, seq_diff, - &orig_node->batman_seqno_reset)) { + &orig_ifinfo->batman_seqno_reset)) { ret = BATADV_PROTECTED; goto out; } @@ -1245,7 +1252,7 @@ batadv_iv_ogm_update_seqnos(const struct ethhdr *ethhdr,

neigh_addr = neigh_node->addr; is_dup = batadv_test_bit(neigh_ifinfo->bat_iv.real_bits, - orig_node->last_real_seqno, + orig_ifinfo->last_real_seqno, seqno);

if (batadv_compare_eth(neigh_addr, ethhdr->h_source) && @@ -1273,163 +1280,65 @@ batadv_iv_ogm_update_seqnos(const struct ethhdr *ethhdr,

if (need_update) { batadv_dbg(BATADV_DBG_BATMAN, bat_priv, - "updating last_seqno: old %u, new %u\n", - orig_node->last_real_seqno, seqno); - orig_node->last_real_seqno = seqno; + "%s updating last_seqno: old %u, new %u\n", + if_outgoing ? if_outgoing->net_dev->name : "DEFAULT", + orig_ifinfo->last_real_seqno, seqno); + orig_ifinfo->last_real_seqno = seqno; }

out: spin_unlock_bh(&orig_node->bat_iv.ogm_cnt_lock); batadv_orig_node_free_ref(orig_node); + if (orig_ifinfo) + batadv_orig_ifinfo_free_ref(orig_ifinfo); return ret; }

-static void batadv_iv_ogm_process(const struct ethhdr *ethhdr, - struct batadv_ogm_packet *batadv_ogm_packet, - const unsigned char *tt_buff, - struct batadv_hard_iface *if_incoming) + +/** + * batadv_iv_ogm_process_per_outif - process a batman iv OGM for an outgoing if + * @skb: the skb containing the OGM + * @orig_node: the (cached) orig node for the originator of this OGM + * @if_incoming: the interface where this packet was received + * @if_outgoing: the interface for which the packet should be considered + */ +static void +batadv_iv_ogm_process_per_outif(const struct sk_buff *skb, int ogm_offset, + struct batadv_orig_node *orig_node, + struct batadv_hard_iface *if_incoming, + struct batadv_hard_iface *if_outgoing) { struct batadv_priv *bat_priv = netdev_priv(if_incoming->soft_iface); - struct batadv_hard_iface *hard_iface; - struct batadv_orig_node *orig_neigh_node, *orig_node, *orig_node_tmp; struct batadv_neigh_node *router = NULL, *router_router = NULL; + struct batadv_orig_node *orig_neigh_node; + struct batadv_orig_ifinfo *orig_ifinfo; struct batadv_neigh_node *orig_neigh_router = NULL; struct batadv_neigh_ifinfo *router_ifinfo = NULL; - int has_directlink_flag; - int is_my_addr = 0, is_my_orig = 0, is_my_oldorig = 0; - int is_bidirect; - bool is_single_hop_neigh = false; - bool is_from_best_next_hop = false; - int sameseq, similar_ttl; + struct batadv_ogm_packet *ogm_packet; enum batadv_dup_status dup_status; - uint32_t if_incoming_seqno; + bool is_from_best_next_hop = false; + bool is_single_hop_neigh = false; + bool sameseq, similar_ttl; + struct sk_buff *skb_priv; + struct ethhdr *ethhdr; uint8_t *prev_sender; + int is_bidirect;

- /* Silently drop when the batman packet is actually not a - * correct packet. - * - * This might happen if a packet is padded (e.g. Ethernet has a - * minimum frame length of 64 byte) and the aggregation interprets - * it as an additional length. - * - * TODO: A more sane solution would be to have a bit in the - * batadv_ogm_packet to detect whether the packet is the last - * packet in an aggregation. Here we expect that the padding - * is always zero (or not 0x01) + /* create a private copy of the skb, as some functions change tq value + * and/or flags. */ - if (batadv_ogm_packet->packet_type != BATADV_IV_OGM) + skb_priv = skb_copy(skb, GFP_ATOMIC); + if (!skb_priv) return;

- /* could be changed by schedule_own_packet() */ - if_incoming_seqno = atomic_read(&if_incoming->bat_iv.ogm_seqno); + ethhdr = eth_hdr(skb_priv); + ogm_packet = (struct batadv_ogm_packet *)(skb_priv->data + ogm_offset);

- if (batadv_ogm_packet->flags & BATADV_DIRECTLINK) - has_directlink_flag = 1; - else - has_directlink_flag = 0; - - if (batadv_compare_eth(ethhdr->h_source, batadv_ogm_packet->orig)) + dup_status = batadv_iv_ogm_update_seqnos(ethhdr, ogm_packet, + if_incoming, if_outgoing); + if (batadv_compare_eth(ethhdr->h_source, ogm_packet->orig)) is_single_hop_neigh = true;

- batadv_dbg(BATADV_DBG_BATMAN, bat_priv, - "Received BATMAN packet via NB: %pM, IF: %s [%pM] (from OG: %pM, via prev OG: %pM, seqno %u, tq %d, TTL %d, V %d, IDF %d)\n", - ethhdr->h_source, if_incoming->net_dev->name, - if_incoming->net_dev->dev_addr, batadv_ogm_packet->orig, - batadv_ogm_packet->prev_sender, - ntohl(batadv_ogm_packet->seqno), batadv_ogm_packet->tq, - batadv_ogm_packet->ttl, - batadv_ogm_packet->version, has_directlink_flag); - - rcu_read_lock(); - list_for_each_entry_rcu(hard_iface, &batadv_hardif_list, list) { - if (hard_iface->if_status != BATADV_IF_ACTIVE) - continue; - - if (hard_iface->soft_iface != if_incoming->soft_iface) - continue; - - if (batadv_compare_eth(ethhdr->h_source, - hard_iface->net_dev->dev_addr)) - is_my_addr = 1; - - if (batadv_compare_eth(batadv_ogm_packet->orig, - hard_iface->net_dev->dev_addr)) - is_my_orig = 1; - - if (batadv_compare_eth(batadv_ogm_packet->prev_sender, - hard_iface->net_dev->dev_addr)) - is_my_oldorig = 1; - } - rcu_read_unlock(); - - if (is_my_addr) { - batadv_dbg(BATADV_DBG_BATMAN, bat_priv, - "Drop packet: received my own broadcast (sender: %pM)\n", - ethhdr->h_source); - return; - } - - if (is_my_orig) { - unsigned long *word; - int offset; - int32_t bit_pos; - int16_t if_num; - uint8_t *weight; - - orig_neigh_node = batadv_iv_ogm_orig_get(bat_priv, - ethhdr->h_source); - if (!orig_neigh_node) - return; - - /* neighbor has to indicate direct link and it has to - * come via the corresponding interface - * save packet seqno for bidirectional check - */ - if (has_directlink_flag && - batadv_compare_eth(if_incoming->net_dev->dev_addr, - batadv_ogm_packet->orig)) { - if_num = if_incoming->if_num; - offset = if_num * BATADV_NUM_WORDS; - - spin_lock_bh(&orig_neigh_node->bat_iv.ogm_cnt_lock); - word = &(orig_neigh_node->bat_iv.bcast_own[offset]); - bit_pos = if_incoming_seqno - 2; - bit_pos -= ntohl(batadv_ogm_packet->seqno); - batadv_set_bit(word, bit_pos); - weight = &orig_neigh_node->bat_iv.bcast_own_sum[if_num]; - *weight = bitmap_weight(word, - BATADV_TQ_LOCAL_WINDOW_SIZE); - spin_unlock_bh(&orig_neigh_node->bat_iv.ogm_cnt_lock); - } - - batadv_dbg(BATADV_DBG_BATMAN, bat_priv, - "Drop packet: originator packet from myself (via neighbor)\n"); - batadv_orig_node_free_ref(orig_neigh_node); - return; - } - - if (is_my_oldorig) { - batadv_dbg(BATADV_DBG_BATMAN, bat_priv, - "Drop packet: ignoring all rebroadcast echos (sender: %pM)\n", - ethhdr->h_source); - return; - } - - if (batadv_ogm_packet->flags & BATADV_NOT_BEST_NEXT_HOP) { - batadv_dbg(BATADV_DBG_BATMAN, bat_priv, - "Drop packet: ignoring all packets not forwarded from the best next hop (sender: %pM)\n", - ethhdr->h_source); - return; - } - - orig_node = batadv_iv_ogm_orig_get(bat_priv, batadv_ogm_packet->orig); - if (!orig_node) - return; - - dup_status = batadv_iv_ogm_update_seqnos(ethhdr, batadv_ogm_packet, - if_incoming, - BATADV_IF_DEFAULT); - if (dup_status == BATADV_PROTECTED) { batadv_dbg(BATADV_DBG_BATMAN, bat_priv, "Drop packet: packet within seqno protection time (sender: %pM)\n", @@ -1437,29 +1346,28 @@ static void batadv_iv_ogm_process(const struct ethhdr *ethhdr, goto out; }

- if (batadv_ogm_packet->tq == 0) { + if (ogm_packet->tq == 0) { batadv_dbg(BATADV_DBG_BATMAN, bat_priv, "Drop packet: originator packet with tq equal 0\n"); goto out; }

- router = batadv_orig_node_get_router(orig_node); + router = batadv_orig_router_get(orig_node, if_outgoing); if (router) { - orig_node_tmp = router->orig_node; - router_router = batadv_orig_node_get_router(orig_node_tmp); - router_ifinfo = batadv_neigh_ifinfo_get(router, - BATADV_IF_DEFAULT); + router_router = batadv_orig_router_get(router->orig_node, + if_outgoing); + router_ifinfo = batadv_neigh_ifinfo_get(router, if_outgoing); }

- if ((router && router_ifinfo->bat_iv.tq_avg != 0) && + if ((router_ifinfo && router_ifinfo->bat_iv.tq_avg != 0) && (batadv_compare_eth(router->addr, ethhdr->h_source))) is_from_best_next_hop = true;

- prev_sender = batadv_ogm_packet->prev_sender; + prev_sender = ogm_packet->prev_sender; /* avoid temporary routing loops */ if (router && router_router && (batadv_compare_eth(router->addr, prev_sender)) && - !(batadv_compare_eth(batadv_ogm_packet->orig, prev_sender)) && + !(batadv_compare_eth(ogm_packet->orig, prev_sender)) && (batadv_compare_eth(router->addr, router_router->addr))) { batadv_dbg(BATADV_DBG_BATMAN, bat_priv, "Drop packet: ignoring all rebroadcast packets that may make me loop (sender: %pM)\n", @@ -1467,7 +1375,8 @@ static void batadv_iv_ogm_process(const struct ethhdr *ethhdr, goto out; }

- batadv_tvlv_ogm_receive(bat_priv, batadv_ogm_packet, orig_node); + if (if_outgoing == BATADV_IF_DEFAULT) + batadv_tvlv_ogm_receive(bat_priv, ogm_packet, orig_node);

/* if sender is a direct neighbor the sender mac equals * originator mac @@ -1483,9 +1392,10 @@ static void batadv_iv_ogm_process(const struct ethhdr *ethhdr,

/* Update nc_nodes of the originator */ batadv_nc_update_nc_node(bat_priv, orig_node, orig_neigh_node, - batadv_ogm_packet, is_single_hop_neigh); + ogm_packet, is_single_hop_neigh);

- orig_neigh_router = batadv_orig_node_get_router(orig_neigh_node); + orig_neigh_router = batadv_orig_router_get(orig_neigh_node, + if_outgoing);

/* drop packet if sender is not a direct neighbor and if we * don't route towards it @@ -1497,25 +1407,41 @@ static void batadv_iv_ogm_process(const struct ethhdr *ethhdr, }

is_bidirect = batadv_iv_ogm_calc_tq(orig_node, orig_neigh_node, - batadv_ogm_packet, if_incoming, - BATADV_IF_DEFAULT); + ogm_packet, if_incoming, + if_outgoing);

/* update ranking if it is not a duplicate or has the same * seqno and similar ttl as the non-duplicate */ - sameseq = orig_node->last_real_seqno == ntohl(batadv_ogm_packet->seqno); - similar_ttl = orig_node->last_ttl - 3 <= batadv_ogm_packet->ttl; + orig_ifinfo = batadv_orig_ifinfo_new(orig_node, if_outgoing); + if (!orig_ifinfo) + goto out_neigh; + + sameseq = orig_ifinfo->last_real_seqno == ntohl(ogm_packet->seqno); + similar_ttl = (orig_ifinfo->last_ttl - 3) <= ogm_packet->ttl; + if (is_bidirect && ((dup_status == BATADV_NO_DUP) || - (sameseq && similar_ttl))) - batadv_iv_ogm_orig_update(bat_priv, orig_node, ethhdr, - batadv_ogm_packet, if_incoming, - BATADV_IF_DEFAULT, tt_buff, - dup_status); + (sameseq && similar_ttl))) { + batadv_iv_ogm_orig_update(bat_priv, orig_node, + orig_ifinfo, ethhdr, + ogm_packet, if_incoming, + if_outgoing, dup_status); + } + batadv_orig_ifinfo_free_ref(orig_ifinfo);

/* is single hop (direct) neighbor */ if (is_single_hop_neigh) { + /* OGMs from secondary interfaces should only scheduled once + * per interface where it has been received, not multiple times + */ + if ((ogm_packet->ttl <= 2) && + (if_incoming != if_outgoing)) { + batadv_dbg(BATADV_DBG_BATMAN, bat_priv, + "Drop packet: OGM from secondary interface and wrong outgoing interface\n"); + goto out_neigh; + } /* mark direct link on incoming interface */ - batadv_iv_ogm_forward(orig_node, ethhdr, batadv_ogm_packet, + batadv_iv_ogm_forward(orig_node, ethhdr, ogm_packet, is_single_hop_neigh, is_from_best_next_hop, if_incoming);

@@ -1537,9 +1463,14 @@ static void batadv_iv_ogm_process(const struct ethhdr *ethhdr, goto out_neigh; }

+ /* only forward the packet on the default interface until the + * OGM forwarding has been reworked to send on specific interfaces. + */ + if (if_outgoing != BATADV_IF_DEFAULT) + goto out_neigh; batadv_dbg(BATADV_DBG_BATMAN, bat_priv, "Forwarding packet: rebroadcast originator packet\n"); - batadv_iv_ogm_forward(orig_node, ethhdr, batadv_ogm_packet, + batadv_iv_ogm_forward(orig_node, ethhdr, ogm_packet, is_single_hop_neigh, is_from_best_next_hop, if_incoming);

@@ -1554,6 +1485,165 @@ out: if (orig_neigh_router) batadv_neigh_node_free_ref(orig_neigh_router);

+ kfree_skb(skb_priv); +} + +/** + * batadv_iv_ogm_process - process an incoming batman iv OGM + * @skb: the skb containing the OGM + * @ogm_offset: offset to the OGM which should be processed (for aggregates) + * @if_incoming: the interface where this packet was receved + */ +static void batadv_iv_ogm_process(const struct sk_buff *skb, int ogm_offset, + struct batadv_hard_iface *if_incoming) +{ + struct batadv_priv *bat_priv = netdev_priv(if_incoming->soft_iface); + struct batadv_orig_node *orig_neigh_node, *orig_node; + struct batadv_hard_iface *hard_iface; + struct batadv_ogm_packet *ogm_packet; + uint32_t if_incoming_seqno; + bool has_directlink_flag; + struct ethhdr *ethhdr; + bool is_my_oldorig = false; + bool is_my_addr = false; + bool is_my_orig = false; + + ogm_packet = (struct batadv_ogm_packet *)(skb->data + ogm_offset); + ethhdr = eth_hdr(skb); + + /* Silently drop when the batman packet is actually not a + * correct packet. + * + * This might happen if a packet is padded (e.g. Ethernet has a + * minimum frame length of 64 byte) and the aggregation interprets + * it as an additional length. + * + * TODO: A more sane solution would be to have a bit in the + * batadv_ogm_packet to detect whether the packet is the last + * packet in an aggregation. Here we expect that the padding + * is always zero (or not 0x01) + */ + if (ogm_packet->packet_type != BATADV_IV_OGM) + return; + + /* could be changed by schedule_own_packet() */ + if_incoming_seqno = atomic_read(&if_incoming->bat_iv.ogm_seqno); + + if (ogm_packet->flags & BATADV_DIRECTLINK) + has_directlink_flag = true; + else + has_directlink_flag = false; + + batadv_dbg(BATADV_DBG_BATMAN, bat_priv, + "Received BATMAN packet via NB: %pM, IF: %s [%pM] (from OG: %pM, via prev OG: %pM, seqno %u, tq %d, TTL %d, V %d, IDF %d)\n", + ethhdr->h_source, if_incoming->net_dev->name, + if_incoming->net_dev->dev_addr, ogm_packet->orig, + ogm_packet->prev_sender, ntohl(ogm_packet->seqno), + ogm_packet->tq, ogm_packet->ttl, + ogm_packet->version, has_directlink_flag); + + rcu_read_lock(); + list_for_each_entry_rcu(hard_iface, &batadv_hardif_list, list) { + if (hard_iface->if_status != BATADV_IF_ACTIVE) + continue; + + if (hard_iface->soft_iface != if_incoming->soft_iface) + continue; + + if (batadv_compare_eth(ethhdr->h_source, + hard_iface->net_dev->dev_addr)) + is_my_addr = true; + + if (batadv_compare_eth(ogm_packet->orig, + hard_iface->net_dev->dev_addr)) + is_my_orig = true; + + if (batadv_compare_eth(ogm_packet->prev_sender, + hard_iface->net_dev->dev_addr)) + is_my_oldorig = true; + } + rcu_read_unlock(); + + if (is_my_addr) { + batadv_dbg(BATADV_DBG_BATMAN, bat_priv, + "Drop packet: received my own broadcast (sender: %pM)\n", + ethhdr->h_source); + return; + } + + if (is_my_orig) { + unsigned long *word; + int offset; + int32_t bit_pos; + int16_t if_num; + uint8_t *weight; + + orig_neigh_node = batadv_iv_ogm_orig_get(bat_priv, + ethhdr->h_source); + if (!orig_neigh_node) + return; + + /* neighbor has to indicate direct link and it has to + * come via the corresponding interface + * save packet seqno for bidirectional check + */ + if (has_directlink_flag && + batadv_compare_eth(if_incoming->net_dev->dev_addr, + ogm_packet->orig)) { + if_num = if_incoming->if_num; + offset = if_num * BATADV_NUM_WORDS; + + spin_lock_bh(&orig_neigh_node->bat_iv.ogm_cnt_lock); + word = &(orig_neigh_node->bat_iv.bcast_own[offset]); + bit_pos = if_incoming_seqno - 2; + bit_pos -= ntohl(ogm_packet->seqno); + batadv_set_bit(word, bit_pos); + weight = &orig_neigh_node->bat_iv.bcast_own_sum[if_num]; + *weight = bitmap_weight(word, + BATADV_TQ_LOCAL_WINDOW_SIZE); + spin_unlock_bh(&orig_neigh_node->bat_iv.ogm_cnt_lock); + } + + batadv_dbg(BATADV_DBG_BATMAN, bat_priv, + "Drop packet: originator packet from myself (via neighbor)\n"); + batadv_orig_node_free_ref(orig_neigh_node); + return; + } + + if (is_my_oldorig) { + batadv_dbg(BATADV_DBG_BATMAN, bat_priv, + "Drop packet: ignoring all rebroadcast echos (sender: %pM)\n", + ethhdr->h_source); + return; + } + + if (ogm_packet->flags & BATADV_NOT_BEST_NEXT_HOP) { + batadv_dbg(BATADV_DBG_BATMAN, bat_priv, + "Drop packet: ignoring all packets not forwarded from the best next hop (sender: %pM)\n", + ethhdr->h_source); + return; + } + + orig_node = batadv_iv_ogm_orig_get(bat_priv, ogm_packet->orig); + if (!orig_node) + return; + + batadv_iv_ogm_process_per_outif(skb, ogm_offset, orig_node, + if_incoming, BATADV_IF_DEFAULT); + + rcu_read_lock(); + list_for_each_entry_rcu(hard_iface, &batadv_hardif_list, list) { + if (hard_iface->if_status != BATADV_IF_ACTIVE) + continue; + + if (hard_iface->soft_iface != bat_priv->soft_iface) + continue; + + batadv_iv_ogm_process_per_outif(skb, ogm_offset, orig_node, + if_incoming, hard_iface); + } + rcu_read_unlock(); + batadv_orig_node_free_ref(orig_node); }

@@ -1561,11 +1651,9 @@ static int batadv_iv_ogm_receive(struct sk_buff *skb, struct batadv_hard_iface *if_incoming) { struct batadv_priv *bat_priv = netdev_priv(if_incoming->soft_iface); - struct batadv_ogm_packet *batadv_ogm_packet; - struct ethhdr *ethhdr; - int buff_pos = 0, packet_len; - unsigned char *tvlv_buff, *packet_buff; + struct batadv_ogm_packet *ogm_packet; uint8_t *packet_pos; + int ogm_offset; bool ret;

ret = batadv_check_management_packet(skb, if_incoming, BATADV_OGM_HLEN); @@ -1582,24 +1670,19 @@ static int batadv_iv_ogm_receive(struct sk_buff *skb, batadv_add_counter(bat_priv, BATADV_CNT_MGMT_RX_BYTES, skb->len + ETH_HLEN);

- packet_len = skb_headlen(skb); - ethhdr = eth_hdr(skb); - packet_buff = skb->data; - batadv_ogm_packet = (struct batadv_ogm_packet *)packet_buff; + ogm_offset = 0; + ogm_packet = (struct batadv_ogm_packet *)skb->data;

/* unpack the aggregated packets and process them one by one */ - while (batadv_iv_ogm_aggr_packet(buff_pos, packet_len, - batadv_ogm_packet->tvlv_len)) { - tvlv_buff = packet_buff + buff_pos + BATADV_OGM_HLEN; + while (batadv_iv_ogm_aggr_packet(ogm_offset, skb_headlen(skb), + ogm_packet->tvlv_len)) { + batadv_iv_ogm_process(skb, ogm_offset, if_incoming);

- batadv_iv_ogm_process(ethhdr, batadv_ogm_packet, - tvlv_buff, if_incoming); + ogm_offset += BATADV_OGM_HLEN; + ogm_offset += ntohs(ogm_packet->tvlv_len);

- buff_pos += BATADV_OGM_HLEN; - buff_pos += ntohs(batadv_ogm_packet->tvlv_len); - - packet_pos = packet_buff + buff_pos; - batadv_ogm_packet = (struct batadv_ogm_packet *)packet_pos; + packet_pos = skb->data + ogm_offset; + ogm_packet = (struct batadv_ogm_packet *)packet_pos; }

kfree_skb(skb); @@ -1661,7 +1744,8 @@ static void batadv_iv_ogm_orig_print(struct batadv_priv *bat_priv,

rcu_read_lock(); hlist_for_each_entry_rcu(orig_node, head, hash_entry) { - neigh_node = batadv_orig_node_get_router(orig_node); + neigh_node = batadv_orig_router_get(orig_node, + BATADV_IF_DEFAULT); if (!neigh_node) continue;

diff --git a/net/batman-adv/distributed-arp-table.c b/net/batman-adv/distributed-arp-table.c index 997ae6a..1d214cd 100644 --- a/net/batman-adv/distributed-arp-table.c +++ b/net/batman-adv/distributed-arp-table.c @@ -589,7 +589,8 @@ static bool batadv_dat_send_data(struct batadv_priv *bat_priv, if (cand[i].type == BATADV_DAT_CANDIDATE_NOT_FOUND) continue;

- neigh_node = batadv_orig_node_get_router(cand[i].orig_node); + neigh_node = batadv_orig_router_get(cand[i].orig_node, + BATADV_IF_DEFAULT); if (!neigh_node) goto free_orig;

diff --git a/net/batman-adv/gateway_client.c b/net/batman-adv/gateway_client.c index 4e8f5b1..9ece204 100644 --- a/net/batman-adv/gateway_client.c +++ b/net/batman-adv/gateway_client.c @@ -146,7 +146,7 @@ batadv_gw_get_best_gw_node(struct batadv_priv *bat_priv) continue;

orig_node = gw_node->orig_node; - router = batadv_orig_node_get_router(orig_node); + router = batadv_orig_router_get(orig_node, BATADV_IF_DEFAULT); if (!router) continue;

@@ -266,7 +266,8 @@ void batadv_gw_election(struct batadv_priv *bat_priv) if (next_gw) { sprintf(gw_addr, "%pM", next_gw->orig_node->orig);

- router = batadv_orig_node_get_router(next_gw->orig_node); + router = batadv_orig_router_get(next_gw->orig_node, + BATADV_IF_DEFAULT); if (!router) { batadv_gw_reselect(bat_priv); goto out; @@ -335,7 +336,7 @@ void batadv_gw_check_election(struct batadv_priv *bat_priv, if (!curr_gw_orig) goto reselect;

- router_gw = batadv_orig_node_get_router(curr_gw_orig); + router_gw = batadv_orig_router_get(curr_gw_orig, BATADV_IF_DEFAULT); if (!router_gw) goto reselect;

@@ -348,7 +349,7 @@ void batadv_gw_check_election(struct batadv_priv *bat_priv, if (curr_gw_orig == orig_node) goto out;

- router_orig = batadv_orig_node_get_router(orig_node); + router_orig = batadv_orig_router_get(orig_node, BATADV_IF_DEFAULT); if (!router_orig) goto out;

@@ -576,7 +577,7 @@ static int batadv_write_buffer_text(struct batadv_priv *bat_priv, struct batadv_neigh_ifinfo *router_ifinfo = NULL; int ret = -1;

- router = batadv_orig_node_get_router(gw_node->orig_node); + router = batadv_orig_router_get(gw_node->orig_node, BATADV_IF_DEFAULT); if (!router) goto out;

diff --git a/net/batman-adv/icmp_socket.c b/net/batman-adv/icmp_socket.c index 3c08eee..b384cb8 100644 --- a/net/batman-adv/icmp_socket.c +++ b/net/batman-adv/icmp_socket.c @@ -215,7 +215,8 @@ static ssize_t batadv_socket_write(struct file *file, const char __user *buff, if (!orig_node) goto dst_unreach;

- neigh_node = batadv_orig_node_get_router(orig_node); + neigh_node = batadv_orig_router_get(orig_node, + BATADV_IF_DEFAULT); if (!neigh_node) goto dst_unreach;

diff --git a/net/batman-adv/network-coding.c b/net/batman-adv/network-coding.c index aec3fa5..6a0b328 100644 --- a/net/batman-adv/network-coding.c +++ b/net/batman-adv/network-coding.c @@ -718,9 +718,21 @@ static bool batadv_can_nc_with_orig(struct batadv_priv *bat_priv, struct batadv_orig_node *orig_node, struct batadv_ogm_packet *ogm_packet) { - if (orig_node->last_real_seqno != ntohl(ogm_packet->seqno)) + struct batadv_orig_ifinfo *orig_ifinfo; + uint32_t last_real_seqno; + uint8_t last_ttl; + + orig_ifinfo = batadv_orig_ifinfo_get(orig_node, BATADV_IF_DEFAULT); + if (!orig_ifinfo) return false; - if (orig_node->last_ttl != ogm_packet->ttl + 1) + + last_ttl = orig_ifinfo->last_ttl; + last_real_seqno = orig_ifinfo->last_real_seqno; + batadv_orig_ifinfo_free_ref(orig_ifinfo); + + if (last_real_seqno != ntohl(ogm_packet->seqno)) + return false; + if (last_ttl != ogm_packet->ttl + 1) return false; if (!batadv_compare_eth(ogm_packet->orig, ogm_packet->prev_sender)) return false; @@ -1019,7 +1031,11 @@ static bool batadv_nc_code_packets(struct batadv_priv *bat_priv, int coded_size = sizeof(*coded_packet); int header_add = coded_size - unicast_size;

- router_neigh = batadv_orig_node_get_router(neigh_node->orig_node); + /* TODO: do we need to consider the outgoing interface for + * coded packets? + */ + router_neigh = batadv_orig_router_get(neigh_node->orig_node, + BATADV_IF_DEFAULT); if (!router_neigh) goto out;

@@ -1029,7 +1045,8 @@ static bool batadv_nc_code_packets(struct batadv_priv *bat_priv, goto out;

neigh_tmp = nc_packet->neigh_node; - router_coding = batadv_orig_node_get_router(neigh_tmp->orig_node); + router_coding = batadv_orig_router_get(neigh_tmp->orig_node, + BATADV_IF_DEFAULT); if (!router_coding) goto out;

diff --git a/net/batman-adv/originator.c b/net/batman-adv/originator.c index 1a4725f..b8ef416 100644 --- a/net/batman-adv/originator.c +++ b/net/batman-adv/originator.c @@ -231,14 +231,31 @@ void batadv_neigh_node_free_ref(struct batadv_neigh_node *neigh_node) call_rcu(&neigh_node->rcu, batadv_neigh_node_free_rcu); }

-/* increases the refcounter of a found router */ +/** + * batadv_orig_node_get_router - router to the originator depending on iface + * @orig_node: the orig node for the router + * @if_outgoing: the interface where the payload packet has been received or + * the OGM should be sent to + * + * Returns the neighbor which should be router for this orig_node/iface. + * + * The object is returned with refcounter increased by 1. + */ struct batadv_neigh_node * -batadv_orig_node_get_router(struct batadv_orig_node *orig_node) +batadv_orig_router_get(struct batadv_orig_node *orig_node, + const struct batadv_hard_iface *if_outgoing) { - struct batadv_neigh_node *router; + struct batadv_orig_ifinfo *orig_ifinfo; + struct batadv_neigh_node *router = NULL;

rcu_read_lock(); - router = rcu_dereference(orig_node->router); + hlist_for_each_entry_rcu(orig_ifinfo, &orig_node->ifinfo_list, list) { + if (orig_ifinfo->if_outgoing != if_outgoing) + continue; + + router = rcu_dereference(orig_ifinfo->router); + break; + }

if (router && !atomic_inc_not_zero(&router->refcount)) router = NULL; @@ -248,6 +265,86 @@ batadv_orig_node_get_router(struct batadv_orig_node *orig_node) }

/** + * batadv_orig_ifinfo_get - find the ifinfo from an orig_node + * @orig_node: the orig node to be queried + * @if_outgoing: the interface for which the ifinfo should be acquired + * + * Returns the requested orig_ifinfo or NULL if not found. + * + * The object is returned with refcounter increased by 1. + */ +struct batadv_orig_ifinfo * +batadv_orig_ifinfo_get(struct batadv_orig_node *orig_node, + struct batadv_hard_iface *if_outgoing) +{ + struct batadv_orig_ifinfo *tmp, *orig_ifinfo = NULL; + + rcu_read_lock(); + hlist_for_each_entry_rcu(tmp, &orig_node->ifinfo_list, + list) { + if (tmp->if_outgoing != if_outgoing) + continue; + + if (!atomic_inc_not_zero(&tmp->refcount)) + continue; + + orig_ifinfo = tmp; + break; + } + rcu_read_unlock(); + + return orig_ifinfo; +} + +/** + * batadv_orig_ifinfo_new - search and possibly create an orig_ifinfo object + * @orig_node: the orig node to be queried + * @if_outgoing: the interface for which the ifinfo should be acquired + * + * Returns NULL in case of failure or the orig_ifinfo object for the if_outgoing + * interface otherwise. The object is created and added to the list + * if it does not exist. + * + * The object is returned with refcounter increased by 1. + */ +struct batadv_orig_ifinfo * +batadv_orig_ifinfo_new(struct batadv_orig_node *orig_node, + struct batadv_hard_iface *if_outgoing) +{ + struct batadv_orig_ifinfo *orig_ifinfo = NULL; + unsigned long reset_time; + + spin_lock_bh(&orig_node->neigh_list_lock); + + orig_ifinfo = batadv_orig_ifinfo_get(orig_node, if_outgoing); + if (orig_ifinfo) + goto out; + + orig_ifinfo = kzalloc(sizeof(*orig_ifinfo), GFP_ATOMIC); + if (!orig_ifinfo) + goto out; + + if (if_outgoing != BATADV_IF_DEFAULT && + !atomic_inc_not_zero(&if_outgoing->refcount)) { + kfree(orig_ifinfo); + orig_ifinfo = NULL; + goto out; + } + + reset_time = jiffies - 1; + reset_time -= msecs_to_jiffies(BATADV_RESET_PROTECTION_MS); + orig_ifinfo->batman_seqno_reset = reset_time; + orig_ifinfo->if_outgoing = if_outgoing; + INIT_HLIST_NODE(&orig_ifinfo->list); + atomic_set(&orig_ifinfo->refcount, 2); + hlist_add_head_rcu(&orig_ifinfo->list, + &orig_node->ifinfo_list); +out: + spin_unlock_bh(&orig_node->neigh_list_lock); + return orig_ifinfo; +} + +/** * batadv_neigh_ifinfo_get - find the ifinfo from an neigh_node * @neigh_node: the neigh node to be queried * @if_outgoing: the interface for which the ifinfo should be acquired @@ -360,11 +457,51 @@ out: return neigh_node; }

+/** + * batadv_orig_ifinfo_free_rcu - free the orig_ifinfo object + * @rcu: rcu pointer of the orig_ifinfo object + */ +static void batadv_orig_ifinfo_free_rcu(struct rcu_head *rcu) +{ + struct batadv_orig_ifinfo *orig_ifinfo; + + orig_ifinfo = container_of(rcu, struct batadv_orig_ifinfo, rcu); + + if (orig_ifinfo->if_outgoing != BATADV_IF_DEFAULT) + batadv_hardif_free_ref_now(orig_ifinfo->if_outgoing); + + kfree(orig_ifinfo); +} + +/** + * batadv_orig_ifinfo_free_ref - decrement the refcounter and possibly free + * the orig_ifinfo (without rcu callback) + * @orig_ifinfo: the orig_ifinfo object to release + */ +static void +batadv_orig_ifinfo_free_ref_now(struct batadv_orig_ifinfo *orig_ifinfo) +{ + if (atomic_dec_and_test(&orig_ifinfo->refcount)) + batadv_orig_ifinfo_free_rcu(&orig_ifinfo->rcu); +} + +/** + * batadv_orig_ifinfo_free_ref - decrement the refcounter and possibly free + * the orig_ifinfo + * @orig_ifinfo: the orig_ifinfo object to release + */ +void batadv_orig_ifinfo_free_ref(struct batadv_orig_ifinfo *orig_ifinfo) +{ + if (atomic_dec_and_test(&orig_ifinfo->refcount)) + call_rcu(&orig_ifinfo->rcu, batadv_orig_ifinfo_free_rcu); +} + static void batadv_orig_node_free_rcu(struct rcu_head *rcu) { struct hlist_node *node_tmp; struct batadv_neigh_node *neigh_node; struct batadv_orig_node *orig_node; + struct batadv_orig_ifinfo *orig_ifinfo;

orig_node = container_of(rcu, struct batadv_orig_node, rcu);

@@ -377,6 +514,11 @@ static void batadv_orig_node_free_rcu(struct rcu_head *rcu) batadv_neigh_node_free_ref_now(neigh_node); }

+ hlist_for_each_entry_safe(orig_ifinfo, node_tmp, + &orig_node->ifinfo_list, list) { + hlist_del_rcu(&orig_ifinfo->list); + batadv_orig_ifinfo_free_ref_now(orig_ifinfo); + } spin_unlock_bh(&orig_node->neigh_list_lock);

/* Free nc_nodes */ @@ -474,6 +616,7 @@ struct batadv_orig_node *batadv_orig_node_new(struct batadv_priv *bat_priv,

INIT_HLIST_HEAD(&orig_node->neigh_list); INIT_LIST_HEAD(&orig_node->vlan_list); + INIT_HLIST_HEAD(&orig_node->ifinfo_list); spin_lock_init(&orig_node->bcast_seqno_lock); spin_lock_init(&orig_node->neigh_list_lock); spin_lock_init(&orig_node->tt_buff_lock); @@ -489,13 +632,11 @@ struct batadv_orig_node *batadv_orig_node_new(struct batadv_priv *bat_priv, orig_node->bat_priv = bat_priv; memcpy(orig_node->orig, addr, ETH_ALEN); batadv_dat_init_orig_node_addr(orig_node); - orig_node->router = NULL; atomic_set(&orig_node->last_ttvn, 0); orig_node->tt_buff = NULL; orig_node->tt_buff_len = 0; reset_time = jiffies - 1 - msecs_to_jiffies(BATADV_RESET_PROTECTION_MS); orig_node->bcast_seqno_reset = reset_time; - orig_node->batman_seqno_reset = reset_time;

/* create a vlan object for the "untagged" LAN */ vlan = batadv_orig_node_vlan_new(orig_node, BATADV_NO_FLAGS); @@ -520,6 +661,55 @@ free_orig_node: }

/** + * batadv_purge_orig_ifinfo - purge obsolete ifinfo entries from originator + * @bat_priv: the bat priv with all the soft interface information + * @orig_node: orig node which is to be checked + * + * Returns true if any ifinfo entry was purged, false otherwise. + */ +static bool +batadv_purge_orig_ifinfo(struct batadv_priv *bat_priv, + struct batadv_orig_node *orig_node) +{ + struct batadv_orig_ifinfo *orig_ifinfo; + struct batadv_hard_iface *if_outgoing; + struct hlist_node *node_tmp; + bool ifinfo_purged = false; + + spin_lock_bh(&orig_node->neigh_list_lock); + + /* for all ifinfo objects for this originator */ + hlist_for_each_entry_safe(orig_ifinfo, node_tmp, + &orig_node->ifinfo_list, list) { + if_outgoing = orig_ifinfo->if_outgoing; + + /* always keep the default interface */ + if (if_outgoing == BATADV_IF_DEFAULT) + continue; + + /* don't purge if the interface is not (going) down */ + if ((if_outgoing->if_status != BATADV_IF_INACTIVE) && + (if_outgoing->if_status != BATADV_IF_NOT_IN_USE) && + (if_outgoing->if_status != BATADV_IF_TO_BE_REMOVED)) + continue; + + batadv_dbg(BATADV_DBG_BATMAN, bat_priv, + "router/ifinfo purge: originator %pM, iface: %s\n", + orig_node->orig, if_outgoing->net_dev->name); + + ifinfo_purged = true; + + hlist_del_rcu(&orig_ifinfo->list); + batadv_orig_ifinfo_free_ref(orig_ifinfo); + } + + spin_unlock_bh(&orig_node->neigh_list_lock); + + return ifinfo_purged; +} + + +/** * batadv_purge_orig_neighbors - purges neighbors from originator * @bat_priv: the bat priv with all the soft interface information * @orig_node: orig node which is to be checked @@ -607,10 +797,22 @@ batadv_find_best_neighbor(struct batadv_priv *bat_priv, return best; }

+/** + * batadv_purge_orig_node - purges obsolete information from an orig_node + * @bat_priv: the bat priv with all the soft interface information + * @orig_node: orig node which is to be checked + * + * This function checks if the orig_node or substructures of it have become + * obsolete, and purges this information if that's the case. + * + * Returns true if the orig_node is to be removed, false otherwise. + */ static bool batadv_purge_orig_node(struct batadv_priv *bat_priv, struct batadv_orig_node *orig_node) { struct batadv_neigh_node *best_neigh_node; + struct batadv_hard_iface *hard_iface; + bool changed;

if (batadv_has_timed_out(orig_node->last_seen, 2 * BATADV_PURGE_TIMEOUT)) { @@ -620,15 +822,39 @@ static bool batadv_purge_orig_node(struct batadv_priv *bat_priv, jiffies_to_msecs(orig_node->last_seen)); return true; } - if (!batadv_purge_orig_neighbors(bat_priv, orig_node)) + changed = batadv_purge_orig_ifinfo(bat_priv, orig_node); + changed = changed || batadv_purge_orig_neighbors(bat_priv, orig_node); + + if (!changed) return false;

+ /* first for NULL ... */ best_neigh_node = batadv_find_best_neighbor(bat_priv, orig_node, BATADV_IF_DEFAULT); - batadv_update_route(bat_priv, orig_node, best_neigh_node); + batadv_update_route(bat_priv, orig_node, BATADV_IF_DEFAULT, + best_neigh_node); if (best_neigh_node) batadv_neigh_node_free_ref(best_neigh_node);

+ /* ... then for all other interfaces. */ + rcu_read_lock(); + list_for_each_entry_rcu(hard_iface, &batadv_hardif_list, list) { + if (hard_iface->if_status != BATADV_IF_ACTIVE) + continue; + + if (hard_iface->soft_iface != bat_priv->soft_iface) + continue; + + best_neigh_node = batadv_find_best_neighbor(bat_priv, + orig_node, + hard_iface); + batadv_update_route(bat_priv, orig_node, hard_iface, + best_neigh_node); + if (best_neigh_node) + batadv_neigh_node_free_ref(best_neigh_node); + } + rcu_read_unlock(); + return false; }

diff --git a/net/batman-adv/originator.h b/net/batman-adv/originator.h index 29fa4c4..75a4d7b 100644 --- a/net/batman-adv/originator.h +++ b/net/batman-adv/originator.h @@ -34,7 +34,8 @@ batadv_neigh_node_new(struct batadv_hard_iface *hard_iface, struct batadv_orig_node *orig_node); void batadv_neigh_node_free_ref(struct batadv_neigh_node *neigh_node); struct batadv_neigh_node * -batadv_orig_node_get_router(struct batadv_orig_node *orig_node); +batadv_orig_router_get(struct batadv_orig_node *orig_node, + const struct batadv_hard_iface *if_outgoing); struct batadv_neigh_ifinfo * batadv_neigh_ifinfo_new(struct batadv_neigh_node *neigh, struct batadv_hard_iface *if_outgoing); @@ -42,6 +43,15 @@ struct batadv_neigh_ifinfo * batadv_neigh_ifinfo_get(struct batadv_neigh_node *neigh, struct batadv_hard_iface *if_outgoing); void batadv_neigh_ifinfo_free_ref(struct batadv_neigh_ifinfo *neigh_ifinfo); + +struct batadv_orig_ifinfo * +batadv_orig_ifinfo_get(struct batadv_orig_node *orig_node, + struct batadv_hard_iface *if_outgoing); +struct batadv_orig_ifinfo * +batadv_orig_ifinfo_new(struct batadv_orig_node *orig_node, + struct batadv_hard_iface *if_outgoing); +void batadv_orig_ifinfo_free_ref(struct batadv_orig_ifinfo *orig_ifinfo); + int batadv_orig_seq_print_text(struct seq_file *seq, void *offset); int batadv_orig_hash_add_if(struct batadv_hard_iface *hard_iface, int max_if_num); diff --git a/net/batman-adv/routing.c b/net/batman-adv/routing.c index 4fd2687..55e9aeb 100644 --- a/net/batman-adv/routing.c +++ b/net/batman-adv/routing.c @@ -33,13 +33,32 @@ static int batadv_route_unicast_packet(struct sk_buff *skb, struct batadv_hard_iface *recv_if);

+/** + * _batadv_update_route - set the router for this originator + * @bat_priv: the bat priv with all the soft interface information + * @orig_node: orig node which is to be configured + * @recv_if: the receive interface for which this route is set + * @neigh_node: neighbor which should be the next router + * + * This function does not perform any error checks + */ static void _batadv_update_route(struct batadv_priv *bat_priv, struct batadv_orig_node *orig_node, + struct batadv_hard_iface *recv_if, struct batadv_neigh_node *neigh_node) { + struct batadv_orig_ifinfo *orig_ifinfo; struct batadv_neigh_node *curr_router;

- curr_router = batadv_orig_node_get_router(orig_node); + orig_ifinfo = batadv_orig_ifinfo_get(orig_node, recv_if); + if (!orig_ifinfo) + return; + + rcu_read_lock(); + curr_router = rcu_dereference(orig_ifinfo->router); + if (curr_router && !atomic_inc_not_zero(&curr_router->refcount)) + curr_router = NULL; + rcu_read_unlock();

/* route deleted */ if ((curr_router) && (!neigh_node)) { @@ -69,16 +88,25 @@ static void _batadv_update_route(struct batadv_priv *bat_priv, neigh_node = NULL;

spin_lock_bh(&orig_node->neigh_list_lock); - rcu_assign_pointer(orig_node->router, neigh_node); + rcu_assign_pointer(orig_ifinfo->router, neigh_node); spin_unlock_bh(&orig_node->neigh_list_lock); + batadv_orig_ifinfo_free_ref(orig_ifinfo);

/* decrease refcount of previous best neighbor */ if (curr_router) batadv_neigh_node_free_ref(curr_router); }

+/** + * batadv_update_route - set the router for this originator + * @bat_priv: the bat priv with all the soft interface information + * @orig_node: orig node which is to be configured + * @recv_if: the receive interface for which this route is set + * @neigh_node: neighbor which should be the next router + */ void batadv_update_route(struct batadv_priv *bat_priv, struct batadv_orig_node *orig_node, + struct batadv_hard_iface *recv_if, struct batadv_neigh_node *neigh_node) { struct batadv_neigh_node *router = NULL; @@ -86,10 +114,10 @@ void batadv_update_route(struct batadv_priv *bat_priv, if (!orig_node) goto out;

- router = batadv_orig_node_get_router(orig_node); + router = batadv_orig_router_get(orig_node, recv_if);

if (router != neigh_node) - _batadv_update_route(bat_priv, orig_node, neigh_node); + _batadv_update_route(bat_priv, orig_node, recv_if, neigh_node);

out: if (router) @@ -406,7 +434,7 @@ batadv_find_router(struct batadv_priv *bat_priv, if (!orig_node) return NULL;

- router = batadv_orig_node_get_router(orig_node); + router = batadv_orig_router_get(orig_node, recv_if);

/* TODO: fill this later with new bonding mechanism */

diff --git a/net/batman-adv/routing.h b/net/batman-adv/routing.h index 192f0aa..8920d0b 100644 --- a/net/batman-adv/routing.h +++ b/net/batman-adv/routing.h @@ -23,6 +23,7 @@ bool batadv_check_management_packet(struct sk_buff *skb, int header_len); void batadv_update_route(struct batadv_priv *bat_priv, struct batadv_orig_node *orig_node, + struct batadv_hard_iface *recv_if, struct batadv_neigh_node *neigh_node); int batadv_recv_icmp_packet(struct sk_buff *skb, struct batadv_hard_iface *recv_if); diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c index 22c32ae..ec89a1b 100644 --- a/net/batman-adv/translation-table.c +++ b/net/batman-adv/translation-table.c @@ -1400,7 +1400,8 @@ batadv_transtable_best_orig(struct batadv_priv *bat_priv,

head = &tt_global_entry->orig_list; hlist_for_each_entry_rcu(orig_entry, head, list) { - router = batadv_orig_node_get_router(orig_entry->orig_node); + router = batadv_orig_router_get(orig_entry->orig_node, + BATADV_IF_DEFAULT); if (!router) continue;

diff --git a/net/batman-adv/types.h b/net/batman-adv/types.h index 8435d7c..d3e2bf4 100644 --- a/net/batman-adv/types.h +++ b/net/batman-adv/types.h @@ -101,6 +101,28 @@ struct batadv_hard_iface { };

/** + * struct batadv_orig_ifinfo - originator info per outgoing interface + * @list: list node for orig_node::ifinfo_list + * @if_outgoing: pointer to outgoing hard interface + * @router: router that should be used to reach this originator + * @last_real_seqno: last and best known sequence number + * @last_ttl: ttl of last received packet + * @batman_seqno_reset: time when the batman seqno window was reset + * @refcount: number of contexts the object is used + * @rcu: struct used for freeing in an RCU-safe manner + */ +struct batadv_orig_ifinfo { + struct hlist_node list; + struct batadv_hard_iface *if_outgoing; + struct batadv_neigh_node __rcu *router; /* rcu protected pointer */ + uint32_t last_real_seqno; + uint8_t last_ttl; + unsigned long batman_seqno_reset; + atomic_t refcount; + struct rcu_head rcu; +}; + +/** * struct batadv_frag_table_entry - head in the fragment buffer table * @head: head of list with fragments * @lock: lock to protect the list of fragments @@ -175,11 +197,10 @@ struct batadv_orig_bat_iv { * struct batadv_orig_node - structure for orig_list maintaining nodes of mesh * @orig: originator ethernet address * @primary_addr: hosts primary interface address - * @router: router that should be used to reach this originator + * @ifinfo_list: list for routers per outgoing interface * @batadv_dat_addr_t: address of the orig node in the distributed hash * @last_seen: time when last packet from this node was received * @bcast_seqno_reset: time when the broadcast seqno window was reset - * @batman_seqno_reset: time when the batman seqno window was reset * @capabilities: announced capabilities of this originator * @last_ttvn: last seen translation table version number * @tt_buff: last tt changeset this node received from the orig node @@ -192,8 +213,6 @@ struct batadv_orig_bat_iv { * made up by two operations (data structure update and metdata -CRC/TTVN- * recalculation) and they have to be executed atomically in order to avoid * another thread to read the table/metadata between those. - * @last_real_seqno: last and best known sequence number - * @last_ttl: ttl of last received packet * @bcast_bits: bitfield containing the info which payload broadcast originated * from this orig node this host already has seen (relative to * last_bcast_seqno) @@ -218,13 +237,12 @@ struct batadv_orig_bat_iv { struct batadv_orig_node { uint8_t orig[ETH_ALEN]; uint8_t primary_addr[ETH_ALEN]; - struct batadv_neigh_node __rcu *router; /* rcu protected pointer */ + struct hlist_head ifinfo_list; #ifdef CONFIG_BATMAN_ADV_DAT batadv_dat_addr_t dat_addr; #endif unsigned long last_seen; unsigned long bcast_seqno_reset; - unsigned long batman_seqno_reset; uint8_t capabilities; atomic_t last_ttvn; unsigned char *tt_buff; @@ -233,8 +251,6 @@ struct batadv_orig_node { bool tt_initialised; /* prevents from changing the table while reading it */ spinlock_t tt_lock; - uint32_t last_real_seqno; - uint8_t last_ttl; DECLARE_BITMAP(bcast_bits, BATADV_TQ_LOCAL_WINDOW_SIZE); uint32_t last_bcast_seqno; struct hlist_head neigh_list;

From: Simon Wunderlich simon@open-mesh.com

The current OGM sending an aggregation functionality decides on which interfaces a packet should be sent when it parses the forward packet struct. However, with the network wide multi interface optimization the outgoing interface is decided by the OGM processing function.

This is reflected by moving the decision in the OGM processing function and add the outgoing interface in the forwarding packet struct. This practically implies that an OGM may be added multiple times (once per outgoing interface), and this also affects aggregation which needs to consider the outgoing interface as well.

Signed-off-by: Simon Wunderlich simon@open-mesh.com Signed-off-by: Marek Lindner mareklindner@neomailbox.ch Signed-off-by: Antonio Quartulli antonio@meshcoding.com --- net/batman-adv/bat_iv_ogm.c | 153 +++++++++++++++++++++++++++----------------- net/batman-adv/send.c | 19 ++++-- net/batman-adv/types.h | 7 +- 3 files changed, 115 insertions(+), 64 deletions(-)

diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c index 789aaa9..a9b7e82 100644 --- a/net/batman-adv/bat_iv_ogm.c +++ b/net/batman-adv/bat_iv_ogm.c @@ -466,17 +466,9 @@ static void batadv_iv_ogm_send_to_if(struct batadv_forw_packet *forw_packet, /* send a batman ogm packet */ static void batadv_iv_ogm_emit(struct batadv_forw_packet *forw_packet) { - struct batadv_hard_iface *hard_iface; struct net_device *soft_iface; struct batadv_priv *bat_priv; struct batadv_hard_iface *primary_if = NULL; - struct batadv_ogm_packet *batadv_ogm_packet; - unsigned char directlink; - uint8_t *packet_pos; - - packet_pos = forw_packet->skb->data; - batadv_ogm_packet = (struct batadv_ogm_packet *)packet_pos; - directlink = (batadv_ogm_packet->flags & BATADV_DIRECTLINK ? 1 : 0);

if (!forw_packet->if_incoming) { pr_err("Error - can't forward packet: incoming iface not specified\n"); @@ -486,6 +478,12 @@ static void batadv_iv_ogm_emit(struct batadv_forw_packet *forw_packet) soft_iface = forw_packet->if_incoming->soft_iface; bat_priv = netdev_priv(soft_iface);

+ if (WARN_ON(!forw_packet->if_outgoing)) + goto out; + + if (WARN_ON(forw_packet->if_outgoing->soft_iface != soft_iface)) + goto out; + if (forw_packet->if_incoming->if_status != BATADV_IF_ACTIVE) goto out;

@@ -493,52 +491,35 @@ static void batadv_iv_ogm_emit(struct batadv_forw_packet *forw_packet) if (!primary_if) goto out;

- /* multihomed peer assumed - * non-primary OGMs are only broadcasted on their interface - */ - if ((directlink && (batadv_ogm_packet->ttl == 1)) || - (forw_packet->own && (forw_packet->if_incoming != primary_if))) { - /* FIXME: what about aggregated packets ? */ - batadv_dbg(BATADV_DBG_BATMAN, bat_priv, - "%s packet (originator %pM, seqno %u, TTL %d) on interface %s [%pM]\n", - (forw_packet->own ? "Sending own" : "Forwarding"), - batadv_ogm_packet->orig, - ntohl(batadv_ogm_packet->seqno), - batadv_ogm_packet->ttl, - forw_packet->if_incoming->net_dev->name, - forw_packet->if_incoming->net_dev->dev_addr); - - /* skb is only used once and than forw_packet is free'd */ - batadv_send_skb_packet(forw_packet->skb, - forw_packet->if_incoming, - batadv_broadcast_addr); - forw_packet->skb = NULL; - - goto out; - } - - /* broadcast on every interface */ - rcu_read_lock(); - list_for_each_entry_rcu(hard_iface, &batadv_hardif_list, list) { - if (hard_iface->soft_iface != soft_iface) - continue; - - batadv_iv_ogm_send_to_if(forw_packet, hard_iface); - } - rcu_read_unlock(); + /* only for one specific outgoing interface */ + batadv_iv_ogm_send_to_if(forw_packet, forw_packet->if_outgoing);

out: if (primary_if) batadv_hardif_free_ref(primary_if); }

-/* return true if new_packet can be aggregated with forw_packet */ +/** + * batadv_iv_ogm_can_aggregate - find out if an OGM can be aggregated on an + * existing forward packet + * @new_bat_ogm_packet: OGM packet to be aggregated + * @bat_priv: the bat priv with all the soft interface information + * @packet_len: (total) length of the OGM + * @send_time: timestamp (jiffies) when the packet is to be sent + * @direktlink: true if this is a direct link packet + * @if_incoming: interface where the packet was received + * @if_outgoing: interface for which the retransmission should be considered + * @forw_packet: the forwarded packet which should be checked + * + * Returns true if new_packet can be aggregated with forw_packet + */ static bool batadv_iv_ogm_can_aggregate(const struct batadv_ogm_packet *new_bat_ogm_packet, struct batadv_priv *bat_priv, int packet_len, unsigned long send_time, bool directlink, const struct batadv_hard_iface *if_incoming, + const struct batadv_hard_iface *if_outgoing, const struct batadv_forw_packet *forw_packet) { struct batadv_ogm_packet *batadv_ogm_packet; @@ -572,6 +553,10 @@ batadv_iv_ogm_can_aggregate(const struct batadv_ogm_packet *new_bat_ogm_packet, if (!primary_if) goto out;

+ /* packet is not leaving on the same interface. */ + if (forw_packet->if_outgoing != if_outgoing) + goto out; + /* packets without direct link flag and high TTL * are flooded through the net */ @@ -613,11 +598,21 @@ out: return res; }

-/* create a new aggregated packet and add this packet to it */ +/* batadv_iv_ogm_aggregate_new - create a new aggregated packet and add this + * packet to it. + * @packet_buff: pointer to the OGM + * @packet_len: (total) length of the OGM + * @send_time: timestamp (jiffies) when the packet is to be sent + * @direct_link: whether this OGM has direct link status + * @if_incoming: interface where the packet was received + * @if_outgoing: interface for which the retransmission should be considered + * @own_packet: true if it is a self-generated ogm + */ static void batadv_iv_ogm_aggregate_new(const unsigned char *packet_buff, int packet_len, unsigned long send_time, bool direct_link, struct batadv_hard_iface *if_incoming, + struct batadv_hard_iface *if_outgoing, int own_packet) { struct batadv_priv *bat_priv = netdev_priv(if_incoming->soft_iface); @@ -628,6 +623,9 @@ static void batadv_iv_ogm_aggregate_new(const unsigned char *packet_buff, if (!atomic_inc_not_zero(&if_incoming->refcount)) return;

+ if (!atomic_inc_not_zero(&if_outgoing->refcount)) + goto out_free_incoming; + /* own packet should always be scheduled */ if (!own_packet) { if (!batadv_atomic_dec_not_zero(&bat_priv->batman_queue_left)) { @@ -668,6 +666,7 @@ static void batadv_iv_ogm_aggregate_new(const unsigned char *packet_buff,

forw_packet_aggr->own = own_packet; forw_packet_aggr->if_incoming = if_incoming; + forw_packet_aggr->if_outgoing = if_outgoing; forw_packet_aggr->num_packets = 0; forw_packet_aggr->direct_link_flags = BATADV_NO_FLAGS; forw_packet_aggr->send_time = send_time; @@ -690,6 +689,8 @@ static void batadv_iv_ogm_aggregate_new(const unsigned char *packet_buff,

return; out: + batadv_hardif_free_ref(if_outgoing); +out_free_incoming: batadv_hardif_free_ref(if_incoming); }

@@ -713,10 +714,21 @@ static void batadv_iv_ogm_aggregate(struct batadv_forw_packet *forw_packet_aggr, } }

+/** + * batadv_iv_ogm_queue_add - queue up an OGM for transmission + * @bat_priv: the bat priv with all the soft interface information + * @packet_buff: pointer to the OGM + * @packet_len: (total) length of the OGM + * @if_incoming: interface where the packet was received + * @if_outgoing: interface for which the retransmission should be considered + * @own_packet: true if it is a self-generated ogm + * @send_time: timestamp (jiffies) when the packet is to be sent + */ static void batadv_iv_ogm_queue_add(struct batadv_priv *bat_priv, unsigned char *packet_buff, int packet_len, struct batadv_hard_iface *if_incoming, + struct batadv_hard_iface *if_outgoing, int own_packet, unsigned long send_time) { /* _aggr -> pointer to the packet we want to aggregate with @@ -742,6 +754,7 @@ static void batadv_iv_ogm_queue_add(struct batadv_priv *bat_priv, bat_priv, packet_len, send_time, direct_link, if_incoming, + if_outgoing, forw_packet_pos)) { forw_packet_aggr = forw_packet_pos; break; @@ -765,7 +778,8 @@ static void batadv_iv_ogm_queue_add(struct batadv_priv *bat_priv,

batadv_iv_ogm_aggregate_new(packet_buff, packet_len, send_time, direct_link, - if_incoming, own_packet); + if_incoming, if_outgoing, + own_packet); } else { batadv_iv_ogm_aggregate(forw_packet_aggr, packet_buff, packet_len, direct_link); @@ -778,7 +792,8 @@ static void batadv_iv_ogm_forward(struct batadv_orig_node *orig_node, struct batadv_ogm_packet *batadv_ogm_packet, bool is_single_hop_neigh, bool is_from_best_next_hop, - struct batadv_hard_iface *if_incoming) + struct batadv_hard_iface *if_incoming, + struct batadv_hard_iface *if_outgoing) { struct batadv_priv *bat_priv = netdev_priv(if_incoming->soft_iface); uint16_t tvlv_len; @@ -823,7 +838,8 @@ static void batadv_iv_ogm_forward(struct batadv_orig_node *orig_node,

batadv_iv_ogm_queue_add(bat_priv, (unsigned char *)batadv_ogm_packet, BATADV_OGM_HLEN + tvlv_len, - if_incoming, 0, batadv_iv_ogm_fwd_send_time()); + if_incoming, if_outgoing, 0, + batadv_iv_ogm_fwd_send_time()); }

/** @@ -868,10 +884,11 @@ static void batadv_iv_ogm_schedule(struct batadv_hard_iface *hard_iface) struct batadv_priv *bat_priv = netdev_priv(hard_iface->soft_iface); unsigned char **ogm_buff = &hard_iface->bat_iv.ogm_buff; struct batadv_ogm_packet *batadv_ogm_packet; - struct batadv_hard_iface *primary_if; + struct batadv_hard_iface *primary_if, *tmp_hard_iface; int *ogm_buff_len = &hard_iface->bat_iv.ogm_buff_len; uint32_t seqno; uint16_t tvlv_len = 0; + unsigned long send_time;

primary_if = batadv_primary_if_get_selected(bat_priv);

@@ -894,10 +911,32 @@ static void batadv_iv_ogm_schedule(struct batadv_hard_iface *hard_iface) atomic_inc(&hard_iface->bat_iv.ogm_seqno);

batadv_iv_ogm_slide_own_bcast_window(hard_iface); - batadv_iv_ogm_queue_add(bat_priv, hard_iface->bat_iv.ogm_buff, - hard_iface->bat_iv.ogm_buff_len, hard_iface, 1, - batadv_iv_ogm_emit_send_time(bat_priv));

+ send_time = batadv_iv_ogm_emit_send_time(bat_priv); + + if (hard_iface != primary_if) { + /* OGMs from secondary interfaces are only scheduled on their + * respective interfaces. + */ + batadv_iv_ogm_queue_add(bat_priv, *ogm_buff, *ogm_buff_len, + hard_iface, hard_iface, 1, send_time); + goto out; + } + + /* OGMs from primary interfaces are scheduled on all + * interfaces. + */ + rcu_read_lock(); + list_for_each_entry_rcu(tmp_hard_iface, &batadv_hardif_list, list) { + if (tmp_hard_iface->soft_iface != hard_iface->soft_iface) + continue; + batadv_iv_ogm_queue_add(bat_priv, *ogm_buff, + *ogm_buff_len, hard_iface, + tmp_hard_iface, 1, send_time); + } + rcu_read_unlock(); + +out: if (primary_if) batadv_hardif_free_ref(primary_if); } @@ -1446,6 +1485,10 @@ batadv_iv_ogm_process_per_outif(const struct sk_buff *skb, int ogm_offset, } batadv_orig_ifinfo_free_ref(orig_ifinfo);

+ /* only forward for specific interface, not for the default one. */ + if (if_outgoing == BATADV_IF_DEFAULT) + goto out_neigh; + /* is single hop (direct) neighbor */ if (is_single_hop_neigh) { /* OGMs from secondary interfaces should only scheduled once @@ -1460,7 +1503,8 @@ batadv_iv_ogm_process_per_outif(const struct sk_buff *skb, int ogm_offset, /* mark direct link on incoming interface */ batadv_iv_ogm_forward(orig_node, ethhdr, ogm_packet, is_single_hop_neigh, - is_from_best_next_hop, if_incoming); + is_from_best_next_hop, if_incoming, + if_outgoing);

batadv_dbg(BATADV_DBG_BATMAN, bat_priv, "Forwarding packet: rebroadcast neighbor packet with direct link flag\n"); @@ -1480,16 +1524,11 @@ batadv_iv_ogm_process_per_outif(const struct sk_buff *skb, int ogm_offset, goto out_neigh; }

- /* only forward the packet on the default interface until the - * OGM forwarding has been reworked to send on specific interfaces. - */ - if (if_outgoing != BATADV_IF_DEFAULT) - goto out_neigh; batadv_dbg(BATADV_DBG_BATMAN, bat_priv, "Forwarding packet: rebroadcast originator packet\n"); batadv_iv_ogm_forward(orig_node, ethhdr, ogm_packet, is_single_hop_neigh, is_from_best_next_hop, - if_incoming); + if_incoming, if_outgoing);

out_neigh: if ((orig_neigh_node) && (!is_single_hop_neigh)) diff --git a/net/batman-adv/send.c b/net/batman-adv/send.c index 30d12c4..c93b92d 100644 --- a/net/batman-adv/send.c +++ b/net/batman-adv/send.c @@ -387,6 +387,8 @@ static void batadv_forw_packet_free(struct batadv_forw_packet *forw_packet) kfree_skb(forw_packet->skb); if (forw_packet->if_incoming) batadv_hardif_free_ref(forw_packet->if_incoming); + if (forw_packet->if_outgoing) + batadv_hardif_free_ref(forw_packet->if_outgoing); kfree(forw_packet); }

@@ -450,6 +452,7 @@ int batadv_add_bcast_packet_to_list(struct batadv_priv *bat_priv,

forw_packet->skb = newskb; forw_packet->if_incoming = primary_if; + forw_packet->if_outgoing = NULL;

/* how often did we send the bcast packet ? */ forw_packet->num_packets = 0; @@ -545,11 +548,16 @@ void batadv_send_outstanding_bat_ogm_packet(struct work_struct *work)

bat_priv->bat_algo_ops->bat_ogm_emit(forw_packet);

- /* we have to have at least one packet in the queue - * to determine the queues wake up time unless we are - * shutting down + /* we have to have at least one packet in the queue to determine the + * queues wake up time unless we are shutting down. + * + * only re-schedule if this is the "original" copy, e.g. the OGM of the + * primary interface should only be rescheduled once per period, but + * this function will be called for the forw_packet instances of the + * other secondary interfaces as well. */ - if (forw_packet->own) + if (forw_packet->own && + forw_packet->if_incoming == forw_packet->if_outgoing) batadv_schedule_bat_ogm(forw_packet->if_incoming);

out: @@ -610,7 +618,8 @@ batadv_purge_outstanding_packets(struct batadv_priv *bat_priv, * we delete only packets belonging to the given interface */ if ((hard_iface) && - (forw_packet->if_incoming != hard_iface)) + (forw_packet->if_incoming != hard_iface) && + (forw_packet->if_outgoing != hard_iface)) continue;

spin_unlock_bh(&bat_priv->forw_bat_list_lock); diff --git a/net/batman-adv/types.h b/net/batman-adv/types.h index d3e2bf4..c317dfc 100644 --- a/net/batman-adv/types.h +++ b/net/batman-adv/types.h @@ -1018,8 +1018,10 @@ struct batadv_skb_cb { * @direct_link_flags: direct link flags for aggregated OGM packets * @num_packets: counter for bcast packet retransmission * @delayed_work: work queue callback item for packet sending - * @if_incoming: pointer incoming hard-iface or primary iface if locally - * generated packet + * @if_incoming: pointer to incoming hard-iface or primary iface if + * locally generated packet + * @if_outgoing: packet where the packet should be sent to, or NULL if + * unspecified */ struct batadv_forw_packet { struct hlist_node list; @@ -1031,6 +1033,7 @@ struct batadv_forw_packet { uint8_t num_packets; struct delayed_work delayed_work; struct batadv_hard_iface *if_incoming; + struct batadv_hard_iface *if_outgoing; };

/**

From: Simon Wunderlich simon@open-mesh.com

To show information per interface, add a debugfs hardif structure similar to the system in sysfs. Hard interface folders will be created in "$debugfs/batman-adv/". Files are not yet added.

Signed-off-by: Simon Wunderlich simon@open-mesh.com Signed-off-by: Marek Lindner mareklindner@neomailbox.ch Signed-off-by: Antonio Quartulli antonio@meshcoding.com --- net/batman-adv/debugfs.c | 73 +++++++++++++++++++++++++++++++++++++++++ net/batman-adv/debugfs.h | 2 ++ net/batman-adv/hard-interface.c | 9 +++++ net/batman-adv/types.h | 2 ++ 4 files changed, 86 insertions(+)

diff --git a/net/batman-adv/debugfs.c b/net/batman-adv/debugfs.c index 0adbcee..2ea3695 100644 --- a/net/batman-adv/debugfs.c +++ b/net/batman-adv/debugfs.c @@ -369,6 +369,25 @@ static struct batadv_debuginfo *batadv_mesh_debuginfos[] = { NULL, };

+#define BATADV_HARDIF_DEBUGINFO(_name, _mode, _open) \ +struct batadv_debuginfo batadv_hardif_debuginfo_##_name = { \ + .attr = { \ + .name = __stringify(_name), \ + .mode = _mode, \ + }, \ + .fops = { \ + .owner = THIS_MODULE, \ + .open = _open, \ + .read = seq_read, \ + .llseek = seq_lseek, \ + .release = single_release, \ + }, \ +}; + +static struct batadv_debuginfo *batadv_hardif_debuginfos[] = { + NULL, +}; + void batadv_debugfs_init(void) { struct batadv_debuginfo **bat_debug; @@ -396,6 +415,7 @@ void batadv_debugfs_init(void) return; err: debugfs_remove_recursive(batadv_debugfs); + batadv_debugfs = NULL; }

void batadv_debugfs_destroy(void) @@ -404,6 +424,59 @@ void batadv_debugfs_destroy(void) batadv_debugfs = NULL; }

+/** + * batadv_debugfs_add_hardif - creates the base directory for a hard interface + * in debugfs. + * @hard_iface: hard interface which should be added. + */ +int batadv_debugfs_add_hardif(struct batadv_hard_iface *hard_iface) +{ + struct batadv_debuginfo **bat_debug; + struct dentry *file; + + if (!batadv_debugfs) + goto out; + + hard_iface->debug_dir = debugfs_create_dir(hard_iface->net_dev->name, + batadv_debugfs); + if (!hard_iface->debug_dir) + goto out; + + for (bat_debug = batadv_hardif_debuginfos; *bat_debug; ++bat_debug) { + file = debugfs_create_file(((*bat_debug)->attr).name, + S_IFREG | ((*bat_debug)->attr).mode, + hard_iface->debug_dir, + hard_iface->net_dev, + &(*bat_debug)->fops); + if (!file) + goto rem_attr; + } + + return 0; +rem_attr: + debugfs_remove_recursive(hard_iface->debug_dir); + hard_iface->debug_dir = NULL; +out: +#ifdef CONFIG_DEBUG_FS + return -ENOMEM; +#else + return 0; +#endif /* CONFIG_DEBUG_FS */ +} + +/** + * batadv_debugfs_del_hardif - delete the base directory for a hard interface + * in debugfs. + * @hard_iface: hard interface which is deleted. + */ +void batadv_debugfs_del_hardif(struct batadv_hard_iface *hard_iface) +{ + if (batadv_debugfs) { + debugfs_remove_recursive(hard_iface->debug_dir); + hard_iface->debug_dir = NULL; + } +} + int batadv_debugfs_add_meshif(struct net_device *dev) { struct batadv_priv *bat_priv = netdev_priv(dev); diff --git a/net/batman-adv/debugfs.h b/net/batman-adv/debugfs.h index 0861b62..981794f 100644 --- a/net/batman-adv/debugfs.h +++ b/net/batman-adv/debugfs.h @@ -24,5 +24,7 @@ void batadv_debugfs_init(void); void batadv_debugfs_destroy(void); int batadv_debugfs_add_meshif(struct net_device *dev); void batadv_debugfs_del_meshif(struct net_device *dev); +int batadv_debugfs_add_hardif(struct batadv_hard_iface *hard_iface); +void batadv_debugfs_del_hardif(struct batadv_hard_iface *hard_iface);

#endif /* _NET_BATMAN_ADV_DEBUGFS_H_ */ diff --git a/net/batman-adv/hard-interface.c b/net/batman-adv/hard-interface.c index bebd46ce..3f0e41a 100644 --- a/net/batman-adv/hard-interface.c +++ b/net/batman-adv/hard-interface.c @@ -23,6 +23,7 @@ #include "translation-table.h" #include "routing.h" #include "sysfs.h" +#include "debugfs.h" #include "originator.h" #include "hash.h" #include "bridge_loop_avoidance.h" @@ -539,6 +540,7 @@ static void batadv_hardif_remove_interface_finish(struct work_struct *work) hard_iface = container_of(work, struct batadv_hard_iface, cleanup_work);

+ batadv_debugfs_del_hardif(hard_iface); batadv_sysfs_del_hardif(&hard_iface->hardif_obj); batadv_hardif_free_ref(hard_iface); } @@ -569,6 +571,11 @@ batadv_hardif_add_interface(struct net_device *net_dev) hard_iface->net_dev = net_dev; hard_iface->soft_iface = NULL; hard_iface->if_status = BATADV_IF_NOT_IN_USE; + + ret = batadv_debugfs_add_hardif(hard_iface); + if (ret) + goto free_sysfs; + INIT_LIST_HEAD(&hard_iface->list); INIT_WORK(&hard_iface->cleanup_work, batadv_hardif_remove_interface_finish); @@ -585,6 +592,8 @@ batadv_hardif_add_interface(struct net_device *net_dev)

return hard_iface;

+free_sysfs: + batadv_sysfs_del_hardif(&hard_iface->hardif_obj); free_if: kfree(hard_iface); release_dev: diff --git a/net/batman-adv/types.h b/net/batman-adv/types.h index 1409279..529b374 100644 --- a/net/batman-adv/types.h +++ b/net/batman-adv/types.h @@ -84,6 +84,7 @@ struct batadv_hard_iface_bat_iv { * @rcu: struct used for freeing in an RCU-safe manner * @bat_iv: BATMAN IV specific per hard interface data * @cleanup_work: work queue callback item for hard interface deinit + * @debug_dir: dentry for nc subdir in batman-adv directory in debugfs */ struct batadv_hard_iface { struct list_head list; @@ -98,6 +99,7 @@ struct batadv_hard_iface { struct rcu_head rcu; struct batadv_hard_iface_bat_iv bat_iv; struct work_struct cleanup_work; + struct dentry *debug_dir; };

/**

Return at the end of void functions is not needed.

Since most of the void functions in the code do not do so, make all the others consistent by removing the useless returns. Actually all the functions to be "fixed" are in network-coding.h only.

Signed-off-by: Antonio Quartulli antonio@meshcoding.com Signed-off-by: Marek Lindner mareklindner@neomailbox.ch --- net/batman-adv/network-coding.h | 7 ------- 1 file changed, 7 deletions(-)

diff --git a/net/batman-adv/network-coding.h b/net/batman-adv/network-coding.h index ab59b3d..136db6d 100644 --- a/net/batman-adv/network-coding.h +++ b/net/batman-adv/network-coding.h @@ -62,7 +62,6 @@ static inline int batadv_nc_mesh_init(struct batadv_priv *bat_priv)

static inline void batadv_nc_mesh_free(struct batadv_priv *bat_priv) { - return; }

static inline void @@ -72,7 +71,6 @@ batadv_nc_update_nc_node(struct batadv_priv *bat_priv, struct batadv_ogm_packet *ogm_packet, int is_single_hop_neigh) { - return; }

static inline void @@ -81,17 +79,14 @@ batadv_nc_purge_orig(struct batadv_priv *bat_priv, bool (*to_purge)(struct batadv_priv *, struct batadv_nc_node *)) { - return; }

static inline void batadv_nc_init_bat_priv(struct batadv_priv *bat_priv) { - return; }

static inline void batadv_nc_init_orig(struct batadv_orig_node *orig_node) { - return; }

static inline bool batadv_nc_skb_forward(struct sk_buff *skb, @@ -104,14 +99,12 @@ static inline void batadv_nc_skb_store_for_decoding(struct batadv_priv *bat_priv, struct sk_buff *skb) { - return; }

static inline void batadv_nc_skb_store_sniffed_unicast(struct batadv_priv *bat_priv, struct sk_buff *skb) { - return; }

static inline int batadv_nc_nodes_seq_print_text(struct seq_file *seq,

From: Simon Wunderlich sw@simonwunderlich.de

With unrolling the batadv_header into the respective structures, the offsetof checks are now useless. Instead, add build checks for all packet types which go over the wire to avoid problems with wrong sizes or compatibility issues on some architectures which don't use every day.

Signed-off-by: Simon Wunderlich sw@simonwunderlich.de Signed-off-by: Marek Lindner mareklindner@neomailbox.ch Signed-off-by: Antonio Quartulli antonio@meshcoding.com --- net/batman-adv/main.c | 24 +++++++++++++++++------- 1 file changed, 17 insertions(+), 7 deletions(-)

diff --git a/net/batman-adv/main.c b/net/batman-adv/main.c index 945e441..ad6aeed 100644 --- a/net/batman-adv/main.c +++ b/net/batman-adv/main.c @@ -419,13 +419,23 @@ static void batadv_recv_handler_init(void) for (i = BATADV_UNICAST_MIN; i <= BATADV_UNICAST_MAX; i++) batadv_rx_handler[i] = batadv_recv_unhandled_unicast_packet;

- /* compile time checks for struct member offsets */ - BUILD_BUG_ON(offsetof(struct batadv_unicast_4addr_packet, src) != 10); - BUILD_BUG_ON(offsetof(struct batadv_unicast_packet, dest) != 4); - BUILD_BUG_ON(offsetof(struct batadv_unicast_tvlv_packet, dst) != 4); - BUILD_BUG_ON(offsetof(struct batadv_frag_packet, dest) != 4); - BUILD_BUG_ON(offsetof(struct batadv_icmp_packet, dst) != 4); - BUILD_BUG_ON(offsetof(struct batadv_icmp_packet_rr, dst) != 4); + /* compile time checks for sizes */ + BUILD_BUG_ON(sizeof(struct batadv_bla_claim_dst) != 6); + BUILD_BUG_ON(sizeof(struct batadv_ogm_packet) != 24); + BUILD_BUG_ON(sizeof(struct batadv_icmp_header) != 20); + BUILD_BUG_ON(sizeof(struct batadv_icmp_packet) != 20); + BUILD_BUG_ON(sizeof(struct batadv_icmp_packet_rr) != 116); + BUILD_BUG_ON(sizeof(struct batadv_unicast_packet) != 10); + BUILD_BUG_ON(sizeof(struct batadv_unicast_4addr_packet) != 18); + BUILD_BUG_ON(sizeof(struct batadv_frag_packet) != 20); + BUILD_BUG_ON(sizeof(struct batadv_bcast_packet) != 14); + BUILD_BUG_ON(sizeof(struct batadv_coded_packet) != 46); + BUILD_BUG_ON(sizeof(struct batadv_unicast_tvlv_packet) != 20); + BUILD_BUG_ON(sizeof(struct batadv_tvlv_hdr) != 4); + BUILD_BUG_ON(sizeof(struct batadv_tvlv_gateway_data) != 8); + BUILD_BUG_ON(sizeof(struct batadv_tvlv_tt_vlan_data) != 8); + BUILD_BUG_ON(sizeof(struct batadv_tvlv_tt_change) != 12); + BUILD_BUG_ON(sizeof(struct batadv_tvlv_roam_adv) != 8);

/* broadcast packet */ batadv_rx_handler[BATADV_BCAST] = batadv_recv_bcast_packet;

From: Simon Wunderlich sw@simonwunderlich.de

Signed-off-by: Simon Wunderlich sw@simonwunderlich.de Signed-off-by: Antonio Quartulli antonio@meshcoding.com --- net/batman-adv/main.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/batman-adv/main.h b/net/batman-adv/main.h index 412c77f..9374f1a 100644 --- a/net/batman-adv/main.h +++ b/net/batman-adv/main.h @@ -24,7 +24,7 @@ #define BATADV_DRIVER_DEVICE "batman-adv"

#ifndef BATADV_SOURCE_VERSION -#define BATADV_SOURCE_VERSION "2013.5.0" +#define BATADV_SOURCE_VERSION "2014.1.0" #endif

/* B.A.T.M.A.N. parameters */