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batman-adv: remove orig_hash spinlock

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Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
This commit is contained in:
Marek Lindner
2011-01-19 20:01:44 +00:00
parent 1605d0d60b
commit d0072609ba
7 changed files with 38 additions and 148 deletions
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75
net/batman-adv/routing.c
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@@ -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);