diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2011-03-17 02:29:25 +0300 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-03-17 02:29:25 +0300 |
commit | 7a6362800cb7d1d618a697a650c7aaed3eb39320 (patch) | |
tree | 087f9bc6c13ef1fad4b392c5cf9325cd28fa8523 /net/batman-adv/soft-interface.c | |
parent | 6445ced8670f37cfc2c5e24a9de9b413dbfc788d (diff) | |
parent | ceda86a108671294052cbf51660097b6534672f5 (diff) |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6: (1480 commits)
bonding: enable netpoll without checking link status
xfrm: Refcount destination entry on xfrm_lookup
net: introduce rx_handler results and logic around that
bonding: get rid of IFF_SLAVE_INACTIVE netdev->priv_flag
bonding: wrap slave state work
net: get rid of multiple bond-related netdevice->priv_flags
bonding: register slave pointer for rx_handler
be2net: Bump up the version number
be2net: Copyright notice change. Update to Emulex instead of ServerEngines
e1000e: fix kconfig for crc32 dependency
netfilter ebtables: fix xt_AUDIT to work with ebtables
xen network backend driver
bonding: Improve syslog message at device creation time
bonding: Call netif_carrier_off after register_netdevice
bonding: Incorrect TX queue offset
net_sched: fix ip_tos2prio
xfrm: fix __xfrm_route_forward()
be2net: Fix UDP packet detected status in RX compl
Phonet: fix aligned-mode pipe socket buffer header reserve
netxen: support for GbE port settings
...
Fix up conflicts in drivers/staging/brcm80211/brcmsmac/wl_mac80211.c
with the staging updates.
Diffstat (limited to 'net/batman-adv/soft-interface.c')
-rw-r--r-- | net/batman-adv/soft-interface.c | 77 |
1 files changed, 33 insertions, 44 deletions
diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c index e89ede192ed0..9ed26140a269 100644 --- a/net/batman-adv/soft-interface.c +++ b/net/batman-adv/soft-interface.c @@ -1,5 +1,5 @@ /* - * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors: + * Copyright (C) 2007-2011 B.A.T.M.A.N. contributors: * * Marek Lindner, Simon Wunderlich * @@ -26,18 +26,15 @@ #include "send.h" #include "bat_debugfs.h" #include "translation-table.h" -#include "types.h" #include "hash.h" #include "gateway_common.h" #include "gateway_client.h" -#include "send.h" #include "bat_sysfs.h" #include <linux/slab.h> #include <linux/ethtool.h> #include <linux/etherdevice.h> #include <linux/if_vlan.h> #include "unicast.h" -#include "routing.h" static int bat_get_settings(struct net_device *dev, struct ethtool_cmd *cmd); @@ -79,20 +76,18 @@ int my_skb_head_push(struct sk_buff *skb, unsigned int len) return 0; } -static void softif_neigh_free_ref(struct kref *refcount) +static void softif_neigh_free_rcu(struct rcu_head *rcu) { struct softif_neigh *softif_neigh; - softif_neigh = container_of(refcount, struct softif_neigh, refcount); + softif_neigh = container_of(rcu, struct softif_neigh, rcu); kfree(softif_neigh); } -static void softif_neigh_free_rcu(struct rcu_head *rcu) +static void softif_neigh_free_ref(struct softif_neigh *softif_neigh) { - struct softif_neigh *softif_neigh; - - softif_neigh = container_of(rcu, struct softif_neigh, rcu); - kref_put(&softif_neigh->refcount, softif_neigh_free_ref); + if (atomic_dec_and_test(&softif_neigh->refcount)) + call_rcu(&softif_neigh->rcu, softif_neigh_free_rcu); } void softif_neigh_purge(struct bat_priv *bat_priv) @@ -119,11 +114,10 @@ void softif_neigh_purge(struct bat_priv *bat_priv) softif_neigh->addr, softif_neigh->vid); softif_neigh_tmp = bat_priv->softif_neigh; bat_priv->softif_neigh = NULL; - kref_put(&softif_neigh_tmp->refcount, - softif_neigh_free_ref); + softif_neigh_free_ref(softif_neigh_tmp); } - call_rcu(&softif_neigh->rcu, softif_neigh_free_rcu); + softif_neigh_free_ref(softif_neigh); } spin_unlock_bh(&bat_priv->softif_neigh_lock); @@ -138,14 +132,17 @@ static struct softif_neigh *softif_neigh_get(struct bat_priv *bat_priv, rcu_read_lock(); hlist_for_each_entry_rcu(softif_neigh, node, &bat_priv->softif_neigh_list, list) { - if (memcmp(softif_neigh->addr, addr, ETH_ALEN) != 0) + if (!compare_eth(softif_neigh->addr, addr)) continue; if (softif_neigh->vid != vid) continue; + if (!atomic_inc_not_zero(&softif_neigh->refcount)) + continue; + softif_neigh->last_seen = jiffies; - goto found; + goto out; } softif_neigh = kzalloc(sizeof(struct softif_neigh), GFP_ATOMIC); @@ -155,15 +152,14 @@ static struct softif_neigh *softif_neigh_get(struct bat_priv *bat_priv, memcpy(softif_neigh->addr, addr, ETH_ALEN); softif_neigh->vid = vid; softif_neigh->last_seen = jiffies; - kref_init(&softif_neigh->refcount); + /* initialize with 2 - caller decrements counter by one */ + atomic_set(&softif_neigh->refcount, 2); INIT_HLIST_NODE(&softif_neigh->list); spin_lock_bh(&bat_priv->softif_neigh_lock); hlist_add_head_rcu(&softif_neigh->list, &bat_priv->softif_neigh_list); spin_unlock_bh(&bat_priv->softif_neigh_lock); -found: - kref_get(&softif_neigh->refcount); out: rcu_read_unlock(); return softif_neigh; @@ -175,8 +171,6 @@ int softif_neigh_seq_print_text(struct seq_file *seq, void *offset) struct bat_priv *bat_priv = netdev_priv(net_dev); struct softif_neigh *softif_neigh; struct hlist_node *node; - size_t buf_size, pos; - char *buff; if (!bat_priv->primary_if) { return seq_printf(seq, "BATMAN mesh %s disabled - " @@ -186,33 +180,15 @@ int softif_neigh_seq_print_text(struct seq_file *seq, void *offset) seq_printf(seq, "Softif neighbor list (%s)\n", net_dev->name); - buf_size = 1; - /* Estimate length for: " xx:xx:xx:xx:xx:xx\n" */ rcu_read_lock(); hlist_for_each_entry_rcu(softif_neigh, node, &bat_priv->softif_neigh_list, list) - buf_size += 30; - rcu_read_unlock(); - - buff = kmalloc(buf_size, GFP_ATOMIC); - if (!buff) - return -ENOMEM; - - buff[0] = '\0'; - pos = 0; - - rcu_read_lock(); - hlist_for_each_entry_rcu(softif_neigh, node, - &bat_priv->softif_neigh_list, list) { - pos += snprintf(buff + pos, 31, "%s %pM (vid: %d)\n", + seq_printf(seq, "%s %pM (vid: %d)\n", bat_priv->softif_neigh == softif_neigh ? "=>" : " ", softif_neigh->addr, softif_neigh->vid); - } rcu_read_unlock(); - seq_printf(seq, "%s", buff); - kfree(buff); return 0; } @@ -267,7 +243,7 @@ static void softif_batman_recv(struct sk_buff *skb, struct net_device *dev, softif_neigh->addr, softif_neigh->vid); softif_neigh_tmp = bat_priv->softif_neigh; bat_priv->softif_neigh = softif_neigh; - kref_put(&softif_neigh_tmp->refcount, softif_neigh_free_ref); + softif_neigh_free_ref(softif_neigh_tmp); /* we need to hold the additional reference */ goto err; } @@ -285,7 +261,7 @@ static void softif_batman_recv(struct sk_buff *skb, struct net_device *dev, } out: - kref_put(&softif_neigh->refcount, softif_neigh_free_ref); + softif_neigh_free_ref(softif_neigh); err: kfree_skb(skb); return; @@ -438,7 +414,7 @@ end: } void interface_rx(struct net_device *soft_iface, - struct sk_buff *skb, struct batman_if *recv_if, + struct sk_buff *skb, struct hard_iface *recv_if, int hdr_size) { struct bat_priv *bat_priv = netdev_priv(soft_iface); @@ -486,7 +462,7 @@ void interface_rx(struct net_device *soft_iface, memcpy(unicast_packet->dest, bat_priv->softif_neigh->addr, ETH_ALEN); - ret = route_unicast_packet(skb, recv_if, hdr_size); + ret = route_unicast_packet(skb, recv_if); if (ret == NET_RX_DROP) goto dropped; @@ -646,6 +622,19 @@ void softif_destroy(struct net_device *soft_iface) unregister_netdevice(soft_iface); } +int softif_is_valid(struct net_device *net_dev) +{ +#ifdef HAVE_NET_DEVICE_OPS + if (net_dev->netdev_ops->ndo_start_xmit == interface_tx) + return 1; +#else + if (net_dev->hard_start_xmit == interface_tx) + return 1; +#endif + + return 0; +} + /* ethtool */ static int bat_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) { |