The following commit has been merged in the maint branch: commit 0128d9440b1cd6749883ac87cfefe22795ad7533 Author: Marek Lindner lindner_marek@yahoo.de Date: Wed Jan 19 20:01:44 2011 +0000
batman-adv: remove orig_hash spinlock
Signed-off-by: Marek Lindner lindner_marek@yahoo.de
diff --git a/icmp_socket.c b/icmp_socket.c index a0a35b1..34ce56c 100644 --- a/icmp_socket.c +++ b/icmp_socket.c @@ -158,9 +158,7 @@ static ssize_t bat_socket_write(struct file *file, const char __user *buff,
struct orig_node *orig_node = NULL; struct neigh_node *neigh_node = NULL; - struct batman_if *batman_if; size_t packet_len = sizeof(struct icmp_packet); - uint8_t dstaddr[ETH_ALEN];
if (len < sizeof(struct icmp_packet)) { bat_dbg(DBG_BATMAN, bat_priv, @@ -220,7 +218,6 @@ static ssize_t bat_socket_write(struct file *file, const char __user *buff, if (atomic_read(&bat_priv->mesh_state) != MESH_ACTIVE) goto dst_unreach;
- spin_lock_bh(&bat_priv->orig_hash_lock); rcu_read_lock(); orig_node = orig_hash_find(bat_priv, icmp_packet->dst);
@@ -239,14 +236,10 @@ static ssize_t bat_socket_write(struct file *file, const char __user *buff,
rcu_read_unlock();
- batman_if = orig_node->router->if_incoming; - memcpy(dstaddr, orig_node->router->addr, ETH_ALEN); - spin_unlock_bh(&bat_priv->orig_hash_lock); - - if (!batman_if) + if (!neigh_node->if_incoming) goto dst_unreach;
- if (batman_if->if_status != IF_ACTIVE) + if (neigh_node->if_incoming->if_status != IF_ACTIVE) goto dst_unreach;
memcpy(icmp_packet->orig, @@ -254,14 +247,13 @@ static ssize_t bat_socket_write(struct file *file, const char __user *buff,
if (packet_len == sizeof(struct icmp_packet_rr)) memcpy(icmp_packet->rr, - batman_if->net_dev->dev_addr, ETH_ALEN); + neigh_node->if_incoming->net_dev->dev_addr, ETH_ALEN);
- send_skb_packet(skb, batman_if, dstaddr); + send_skb_packet(skb, neigh_node->if_incoming, neigh_node->addr); goto out;
unlock: rcu_read_unlock(); - spin_unlock_bh(&bat_priv->orig_hash_lock); dst_unreach: icmp_packet->msg_type = DESTINATION_UNREACHABLE; bat_socket_add_packet(socket_client, icmp_packet, packet_len); diff --git a/main.c b/main.c index 3f977ea..09c21f2 100644 --- a/main.c +++ b/main.c @@ -79,7 +79,6 @@ int mesh_init(struct net_device *soft_iface) { struct bat_priv *bat_priv = netdev_priv(soft_iface);
- spin_lock_init(&bat_priv->orig_hash_lock); spin_lock_init(&bat_priv->forw_bat_list_lock); spin_lock_init(&bat_priv->forw_bcast_list_lock); spin_lock_init(&bat_priv->hna_lhash_lock); diff --git a/originator.c b/originator.c index 69e27a2..a8d0262 100644 --- a/originator.c +++ b/originator.c @@ -44,18 +44,15 @@ int originator_init(struct bat_priv *bat_priv) if (bat_priv->orig_hash) return 1;
- spin_lock_bh(&bat_priv->orig_hash_lock); bat_priv->orig_hash = hash_new(1024);
if (!bat_priv->orig_hash) goto err;
- spin_unlock_bh(&bat_priv->orig_hash_lock); start_purge_timer(bat_priv); return 1;
err: - spin_unlock_bh(&bat_priv->orig_hash_lock); return 0; }
@@ -159,7 +156,6 @@ void originator_free(struct bat_priv *bat_priv)
cancel_delayed_work_sync(&bat_priv->orig_work);
- spin_lock_bh(&bat_priv->orig_hash_lock); bat_priv->orig_hash = NULL;
for (i = 0; i < hash->size; i++) { @@ -177,7 +173,6 @@ void originator_free(struct bat_priv *bat_priv) }
hash_destroy(hash); - spin_unlock_bh(&bat_priv->orig_hash_lock); }
/* this function finds or creates an originator entry for the given @@ -342,8 +337,6 @@ static void _purge_orig(struct bat_priv *bat_priv) if (!hash) return;
- spin_lock_bh(&bat_priv->orig_hash_lock); - /* for all origins... */ for (i = 0; i < hash->size; i++) { head = &hash->table[i]; @@ -367,8 +360,6 @@ static void _purge_orig(struct bat_priv *bat_priv) spin_unlock_bh(list_lock); }
- spin_unlock_bh(&bat_priv->orig_hash_lock); - gw_node_purge(bat_priv); gw_election(bat_priv);
@@ -425,8 +416,6 @@ int orig_seq_print_text(struct seq_file *seq, void *offset) "Originator", "last-seen", "#", TQ_MAX_VALUE, "Nexthop", "outgoingIF", "Potential nexthops");
- spin_lock_bh(&bat_priv->orig_hash_lock); - for (i = 0; i < hash->size; i++) { head = &hash->table[i];
@@ -462,8 +451,6 @@ int orig_seq_print_text(struct seq_file *seq, void *offset) rcu_read_unlock(); }
- spin_unlock_bh(&bat_priv->orig_hash_lock); - if ((batman_count == 0)) seq_printf(seq, "No batman nodes in range ...\n");
@@ -511,8 +498,6 @@ int orig_hash_add_if(struct batman_if *batman_if, int max_if_num)
/* resize all orig nodes because orig_node->bcast_own(_sum) depend on * if_num */ - spin_lock_bh(&bat_priv->orig_hash_lock); - for (i = 0; i < hash->size; i++) { head = &hash->table[i];
@@ -528,12 +513,10 @@ int orig_hash_add_if(struct batman_if *batman_if, int max_if_num) rcu_read_unlock(); }
- spin_unlock_bh(&bat_priv->orig_hash_lock); return 0;
err: rcu_read_unlock(); - spin_unlock_bh(&bat_priv->orig_hash_lock); return -ENOMEM; }
@@ -601,8 +584,6 @@ int orig_hash_del_if(struct batman_if *batman_if, int max_if_num)
/* resize all orig nodes because orig_node->bcast_own(_sum) depend on * if_num */ - spin_lock_bh(&bat_priv->orig_hash_lock); - for (i = 0; i < hash->size; i++) { head = &hash->table[i];
@@ -637,11 +618,9 @@ int orig_hash_del_if(struct batman_if *batman_if, int max_if_num) rcu_read_unlock();
batman_if->if_num = -1; - spin_unlock_bh(&bat_priv->orig_hash_lock); return 0;
err: rcu_read_unlock(); - spin_unlock_bh(&bat_priv->orig_hash_lock); return -ENOMEM; } diff --git a/routing.c b/routing.c index c4b7ae9..3cfa2c7 100644 --- a/routing.c +++ b/routing.c @@ -46,8 +46,6 @@ void slide_own_bcast_window(struct batman_if *batman_if) int i; size_t word_index;
- spin_lock_bh(&bat_priv->orig_hash_lock); - for (i = 0; i < hash->size; i++) { head = &hash->table[i];
@@ -64,8 +62,6 @@ void slide_own_bcast_window(struct batman_if *batman_if) } rcu_read_unlock(); } - - spin_unlock_bh(&bat_priv->orig_hash_lock); }
static void update_HNA(struct bat_priv *bat_priv, struct orig_node *orig_node, @@ -771,7 +767,7 @@ void receive_bat_packet(struct ethhdr *ethhdr, orig_node : get_orig_node(bat_priv, ethhdr->h_source)); if (!orig_neigh_node) - goto out_neigh; + goto out;
/* drop packet if sender is not a direct neighbor and if we * don't route towards it */ @@ -834,7 +830,6 @@ out:
int recv_bat_packet(struct sk_buff *skb, struct batman_if *batman_if) { - struct bat_priv *bat_priv = netdev_priv(batman_if->soft_iface); struct ethhdr *ethhdr;
/* drop packet if it has not necessary minimum size */ @@ -861,12 +856,10 @@ int recv_bat_packet(struct sk_buff *skb, struct batman_if *batman_if)
ethhdr = (struct ethhdr *)skb_mac_header(skb);
- spin_lock_bh(&bat_priv->orig_hash_lock); receive_aggr_bat_packet(ethhdr, skb->data, skb_headlen(skb), batman_if); - spin_unlock_bh(&bat_priv->orig_hash_lock);
kfree_skb(skb); return NET_RX_SUCCESS; @@ -878,8 +871,6 @@ static int recv_my_icmp_packet(struct bat_priv *bat_priv, struct orig_node *orig_node = NULL; struct neigh_node *neigh_node = NULL; struct icmp_packet_rr *icmp_packet; - struct batman_if *batman_if; - uint8_t dstaddr[ETH_ALEN]; int ret = NET_RX_DROP;
icmp_packet = (struct icmp_packet_rr *)skb->data; @@ -895,7 +886,6 @@ static int recv_my_icmp_packet(struct bat_priv *bat_priv,
/* answer echo request (ping) */ /* get routing information */ - spin_lock_bh(&bat_priv->orig_hash_lock); rcu_read_lock(); orig_node = orig_hash_find(bat_priv, icmp_packet->orig);
@@ -914,12 +904,6 @@ static int recv_my_icmp_packet(struct bat_priv *bat_priv,
rcu_read_unlock();
- /* don't lock while sending the packets ... we therefore - * copy the required data before sending */ - batman_if = orig_node->router->if_incoming; - memcpy(dstaddr, orig_node->router->addr, ETH_ALEN); - spin_unlock_bh(&bat_priv->orig_hash_lock); - /* create a copy of the skb, if needed, to modify it. */ if (skb_cow(skb, sizeof(struct ethhdr)) < 0) goto out; @@ -932,13 +916,12 @@ static int recv_my_icmp_packet(struct bat_priv *bat_priv, icmp_packet->msg_type = ECHO_REPLY; icmp_packet->ttl = TTL;
- send_skb_packet(skb, batman_if, dstaddr); + send_skb_packet(skb, neigh_node->if_incoming, neigh_node->addr); ret = NET_RX_SUCCESS; goto out;
unlock: rcu_read_unlock(); - spin_unlock_bh(&bat_priv->orig_hash_lock); out: if (neigh_node) neigh_node_free_ref(neigh_node); @@ -953,8 +936,6 @@ static int recv_icmp_ttl_exceeded(struct bat_priv *bat_priv, struct orig_node *orig_node = NULL; struct neigh_node *neigh_node = NULL; struct icmp_packet *icmp_packet; - struct batman_if *batman_if; - uint8_t dstaddr[ETH_ALEN]; int ret = NET_RX_DROP;
icmp_packet = (struct icmp_packet *)skb->data; @@ -971,7 +952,6 @@ static int recv_icmp_ttl_exceeded(struct bat_priv *bat_priv, goto out;
/* get routing information */ - spin_lock_bh(&bat_priv->orig_hash_lock); rcu_read_lock(); orig_node = orig_hash_find(bat_priv, icmp_packet->orig);
@@ -990,12 +970,6 @@ static int recv_icmp_ttl_exceeded(struct bat_priv *bat_priv,
rcu_read_unlock();
- /* don't lock while sending the packets ... we therefore - * copy the required data before sending */ - batman_if = orig_node->router->if_incoming; - memcpy(dstaddr, orig_node->router->addr, ETH_ALEN); - spin_unlock_bh(&bat_priv->orig_hash_lock); - /* create a copy of the skb, if needed, to modify it. */ if (skb_cow(skb, sizeof(struct ethhdr)) < 0) goto out; @@ -1008,13 +982,12 @@ static int recv_icmp_ttl_exceeded(struct bat_priv *bat_priv, icmp_packet->msg_type = TTL_EXCEEDED; icmp_packet->ttl = TTL;
- send_skb_packet(skb, batman_if, dstaddr); + send_skb_packet(skb, neigh_node->if_incoming, neigh_node->addr); ret = NET_RX_SUCCESS; goto out;
unlock: rcu_read_unlock(); - spin_unlock_bh(&bat_priv->orig_hash_lock); out: if (neigh_node) neigh_node_free_ref(neigh_node); @@ -1031,9 +1004,7 @@ int recv_icmp_packet(struct sk_buff *skb, struct batman_if *recv_if) struct ethhdr *ethhdr; struct orig_node *orig_node = NULL; struct neigh_node *neigh_node = NULL; - struct batman_if *batman_if; int hdr_size = sizeof(struct icmp_packet); - uint8_t dstaddr[ETH_ALEN]; int ret = NET_RX_DROP;
/** @@ -1079,7 +1050,6 @@ int recv_icmp_packet(struct sk_buff *skb, struct batman_if *recv_if) return recv_icmp_ttl_exceeded(bat_priv, skb);
/* get routing information */ - spin_lock_bh(&bat_priv->orig_hash_lock); rcu_read_lock(); orig_node = orig_hash_find(bat_priv, icmp_packet->dst);
@@ -1098,12 +1068,6 @@ int recv_icmp_packet(struct sk_buff *skb, struct batman_if *recv_if)
rcu_read_unlock();
- /* don't lock while sending the packets ... we therefore - * copy the required data before sending */ - batman_if = orig_node->router->if_incoming; - memcpy(dstaddr, orig_node->router->addr, ETH_ALEN); - spin_unlock_bh(&bat_priv->orig_hash_lock); - /* create a copy of the skb, if needed, to modify it. */ if (skb_cow(skb, sizeof(struct ethhdr)) < 0) goto out; @@ -1114,13 +1078,12 @@ int recv_icmp_packet(struct sk_buff *skb, struct batman_if *recv_if) icmp_packet->ttl--;
/* route it */ - send_skb_packet(skb, batman_if, dstaddr); + send_skb_packet(skb, neigh_node->if_incoming, neigh_node->addr); ret = NET_RX_SUCCESS; goto out;
unlock: rcu_read_unlock(); - spin_unlock_bh(&bat_priv->orig_hash_lock); out: if (neigh_node) neigh_node_free_ref(neigh_node); @@ -1306,8 +1269,6 @@ int route_unicast_packet(struct sk_buff *skb, struct batman_if *recv_if, struct bat_priv *bat_priv = netdev_priv(recv_if->soft_iface); struct orig_node *orig_node = NULL; struct neigh_node *neigh_node = NULL; - struct batman_if *batman_if; - uint8_t dstaddr[ETH_ALEN]; struct unicast_packet *unicast_packet; struct ethhdr *ethhdr = (struct ethhdr *)skb_mac_header(skb); int ret = NET_RX_DROP; @@ -1324,7 +1285,6 @@ int route_unicast_packet(struct sk_buff *skb, struct batman_if *recv_if, }
/* get routing information */ - spin_lock_bh(&bat_priv->orig_hash_lock); rcu_read_lock(); orig_node = orig_hash_find(bat_priv, unicast_packet->dest);
@@ -1336,16 +1296,8 @@ int route_unicast_packet(struct sk_buff *skb, struct batman_if *recv_if, /* find_router() increases neigh_nodes refcount if found. */ neigh_node = find_router(bat_priv, orig_node, recv_if);
- if (!neigh_node) { - spin_unlock_bh(&bat_priv->orig_hash_lock); + if (!neigh_node) goto out; - } - - /* don't lock while sending the packets ... we therefore - * copy the required data before sending */ - batman_if = neigh_node->if_incoming; - memcpy(dstaddr, neigh_node->addr, ETH_ALEN); - spin_unlock_bh(&bat_priv->orig_hash_lock);
/* create a copy of the skb, if needed, to modify it. */ if (skb_cow(skb, sizeof(struct ethhdr)) < 0) @@ -1355,12 +1307,14 @@ int route_unicast_packet(struct sk_buff *skb, struct batman_if *recv_if,
if (unicast_packet->packet_type == BAT_UNICAST && atomic_read(&bat_priv->fragmentation) && - skb->len > batman_if->net_dev->mtu) - return frag_send_skb(skb, bat_priv, batman_if, - dstaddr); + skb->len > neigh_node->if_incoming->net_dev->mtu) { + ret = frag_send_skb(skb, bat_priv, + neigh_node->if_incoming, neigh_node->addr); + goto out; + }
if (unicast_packet->packet_type == BAT_UNICAST_FRAG && - frag_can_reassemble(skb, batman_if->net_dev->mtu)) { + frag_can_reassemble(skb, neigh_node->if_incoming->net_dev->mtu)) {
ret = frag_reassemble_skb(skb, bat_priv, &new_skb);
@@ -1381,13 +1335,12 @@ int route_unicast_packet(struct sk_buff *skb, struct batman_if *recv_if, unicast_packet->ttl--;
/* route it */ - send_skb_packet(skb, batman_if, dstaddr); + send_skb_packet(skb, neigh_node->if_incoming, neigh_node->addr); ret = NET_RX_SUCCESS; goto out;
unlock: rcu_read_unlock(); - spin_unlock_bh(&bat_priv->orig_hash_lock); out: if (neigh_node) neigh_node_free_ref(neigh_node); @@ -1486,7 +1439,6 @@ int recv_bcast_packet(struct sk_buff *skb, struct batman_if *recv_if) if (bcast_packet->ttl < 2) goto out;
- spin_lock_bh(&bat_priv->orig_hash_lock); rcu_read_lock(); orig_node = orig_hash_find(bat_priv, bcast_packet->orig);
@@ -1515,7 +1467,6 @@ int recv_bcast_packet(struct sk_buff *skb, struct batman_if *recv_if) orig_node->last_bcast_seqno = ntohl(bcast_packet->seqno);
spin_unlock_bh(&orig_node->bcast_seqno_lock); - spin_unlock_bh(&bat_priv->orig_hash_lock);
/* rebroadcast packet */ add_bcast_packet_to_list(bat_priv, skb); @@ -1527,11 +1478,9 @@ int recv_bcast_packet(struct sk_buff *skb, struct batman_if *recv_if)
rcu_unlock: rcu_read_unlock(); - spin_unlock_bh(&bat_priv->orig_hash_lock); goto out; spin_unlock: spin_unlock_bh(&orig_node->bcast_seqno_lock); - spin_unlock_bh(&bat_priv->orig_hash_lock); out: if (orig_node) orig_node_free_ref(orig_node); diff --git a/types.h b/types.h index 1be76fe..a9bf186 100644 --- a/types.h +++ b/types.h @@ -159,7 +159,6 @@ struct bat_priv { struct hashtable_t *hna_local_hash; struct hashtable_t *hna_global_hash; struct hashtable_t *vis_hash; - spinlock_t orig_hash_lock; /* protects orig_hash */ spinlock_t forw_bat_list_lock; /* protects forw_bat_list */ spinlock_t forw_bcast_list_lock; /* protects */ spinlock_t hna_lhash_lock; /* protects hna_local_hash */ diff --git a/unicast.c b/unicast.c index 36757c0..6bfb573 100644 --- a/unicast.c +++ b/unicast.c @@ -184,10 +184,9 @@ int frag_reassemble_skb(struct sk_buff *skb, struct bat_priv *bat_priv,
*new_skb = NULL;
- spin_lock_bh(&bat_priv->orig_hash_lock); orig_node = orig_hash_find(bat_priv, unicast_packet->orig); if (!orig_node) - goto unlock; + goto out;
orig_node->last_frag_packet = jiffies;
@@ -212,8 +211,6 @@ int frag_reassemble_skb(struct sk_buff *skb, struct bat_priv *bat_priv, if (*new_skb) ret = NET_RX_SUCCESS;
-unlock: - spin_unlock_bh(&bat_priv->orig_hash_lock); out: if (orig_node) orig_node_free_ref(orig_node); @@ -286,14 +283,10 @@ int unicast_send_skb(struct sk_buff *skb, struct bat_priv *bat_priv) struct ethhdr *ethhdr = (struct ethhdr *)skb->data; struct unicast_packet *unicast_packet; struct orig_node *orig_node; - struct batman_if *batman_if; struct neigh_node *neigh_node; int data_len = skb->len; - uint8_t dstaddr[6]; int ret = 1;
- spin_lock_bh(&bat_priv->orig_hash_lock); - /* get routing information */ if (is_multicast_ether_addr(ethhdr->h_dest)) { orig_node = (struct orig_node *)gw_get_selected(bat_priv); @@ -305,23 +298,21 @@ int unicast_send_skb(struct sk_buff *skb, struct bat_priv *bat_priv) orig_node = transtable_search(bat_priv, ethhdr->h_dest);
find_router: - /* find_router() increases neigh_nodes refcount if found. */ + /** + * find_router(): + * - if orig_node is NULL it returns NULL + * - increases neigh_nodes refcount if found. + */ neigh_node = find_router(bat_priv, orig_node, NULL);
if (!neigh_node) - goto unlock; + goto out;
if (neigh_node->if_incoming->if_status != IF_ACTIVE) - goto unlock; + goto out;
if (my_skb_head_push(skb, sizeof(struct unicast_packet)) < 0) - goto unlock; - - /* don't lock while sending the packets ... we therefore - * copy the required data before sending */ - batman_if = neigh_node->if_incoming; - memcpy(dstaddr, neigh_node->addr, ETH_ALEN); - spin_unlock_bh(&bat_priv->orig_hash_lock); + goto out;
unicast_packet = (struct unicast_packet *)skb->data;
@@ -335,19 +326,18 @@ find_router:
if (atomic_read(&bat_priv->fragmentation) && data_len + sizeof(struct unicast_packet) > - batman_if->net_dev->mtu) { + neigh_node->if_incoming->net_dev->mtu) { /* send frag skb decreases ttl */ unicast_packet->ttl++; - ret = frag_send_skb(skb, bat_priv, batman_if, dstaddr); + ret = frag_send_skb(skb, bat_priv, + neigh_node->if_incoming, neigh_node->addr); goto out; }
- send_skb_packet(skb, batman_if, dstaddr); + send_skb_packet(skb, neigh_node->if_incoming, neigh_node->addr); ret = 0; goto out;
-unlock: - spin_unlock_bh(&bat_priv->orig_hash_lock); out: if (neigh_node) neigh_node_free_ref(neigh_node); diff --git a/vis.c b/vis.c index 798e738..074feba 100644 --- a/vis.c +++ b/vis.c @@ -615,7 +615,6 @@ static int generate_vis_packet(struct bat_priv *bat_priv) info->first_seen = jiffies; packet->vis_type = atomic_read(&bat_priv->vis_mode);
- spin_lock_bh(&bat_priv->orig_hash_lock); memcpy(packet->target_orig, broadcast_addr, ETH_ALEN); packet->ttl = TTL; packet->seqno = htonl(ntohl(packet->seqno) + 1); @@ -625,10 +624,8 @@ static int generate_vis_packet(struct bat_priv *bat_priv) if (packet->vis_type == VIS_TYPE_CLIENT_UPDATE) { best_tq = find_best_vis_server(bat_priv, info);
- if (best_tq < 0) { - spin_unlock_bh(&bat_priv->orig_hash_lock); + if (best_tq < 0) return -1; - } }
for (i = 0; i < hash->size; i++) { @@ -660,17 +657,12 @@ static int generate_vis_packet(struct bat_priv *bat_priv) entry->quality = neigh_node->tq_avg; packet->entries++;
- if (vis_packet_full(info)) { - rcu_read_unlock(); - spin_unlock_bh(&bat_priv->orig_hash_lock); - return 0; - } + if (vis_packet_full(info)) + goto unlock; } rcu_read_unlock(); }
- spin_unlock_bh(&bat_priv->orig_hash_lock); - hash = bat_priv->hna_local_hash;
spin_lock_bh(&bat_priv->hna_lhash_lock); @@ -695,6 +687,10 @@ static int generate_vis_packet(struct bat_priv *bat_priv)
spin_unlock_bh(&bat_priv->hna_lhash_lock); return 0; + +unlock: + rcu_read_unlock(); + return 0; }
/* free old vis packets. Must be called with this vis_hash_lock @@ -740,7 +736,6 @@ static void broadcast_vis_packet(struct bat_priv *bat_priv, int i;
- spin_lock_bh(&bat_priv->orig_hash_lock); packet = (struct vis_packet *)info->skb_packet->data;
/* send to all routers in range. */ @@ -763,18 +758,14 @@ static void broadcast_vis_packet(struct bat_priv *bat_priv, memcpy(packet->target_orig, orig_node->orig, ETH_ALEN); batman_if = orig_node->router->if_incoming; memcpy(dstaddr, orig_node->router->addr, ETH_ALEN); - spin_unlock_bh(&bat_priv->orig_hash_lock);
skb = skb_clone(info->skb_packet, GFP_ATOMIC); if (skb) send_skb_packet(skb, batman_if, dstaddr);
- spin_lock_bh(&bat_priv->orig_hash_lock); } rcu_read_unlock(); } - - spin_unlock_bh(&bat_priv->orig_hash_lock); }
static void unicast_vis_packet(struct bat_priv *bat_priv, @@ -784,12 +775,9 @@ static void unicast_vis_packet(struct bat_priv *bat_priv, struct neigh_node *neigh_node = NULL; struct sk_buff *skb; struct vis_packet *packet; - struct batman_if *batman_if; - uint8_t dstaddr[ETH_ALEN];
packet = (struct vis_packet *)info->skb_packet->data;
- spin_lock_bh(&bat_priv->orig_hash_lock); rcu_read_lock(); orig_node = orig_hash_find(bat_priv, packet->target_orig);
@@ -808,21 +796,15 @@ static void unicast_vis_packet(struct bat_priv *bat_priv,
rcu_read_unlock();
- /* don't lock while sending the packets ... we therefore - * copy the required data before sending */ - batman_if = orig_node->router->if_incoming; - memcpy(dstaddr, orig_node->router->addr, ETH_ALEN); - spin_unlock_bh(&bat_priv->orig_hash_lock); - skb = skb_clone(info->skb_packet, GFP_ATOMIC); if (skb) - send_skb_packet(skb, batman_if, dstaddr); + send_skb_packet(skb, neigh_node->if_incoming, + neigh_node->addr);
goto out;
unlock: rcu_read_unlock(); - spin_unlock_bh(&bat_priv->orig_hash_lock); out: if (neigh_node) neigh_node_free_ref(neigh_node);