diff options
Diffstat (limited to 'net/batman-adv/bridge_loop_avoidance.c')
| -rw-r--r-- | net/batman-adv/bridge_loop_avoidance.c | 27 |
1 files changed, 20 insertions, 7 deletions
diff --git a/net/batman-adv/bridge_loop_avoidance.c b/net/batman-adv/bridge_loop_avoidance.c index 8bf97515a77d..314e37b272a7 100644 --- a/net/batman-adv/bridge_loop_avoidance.c +++ b/net/batman-adv/bridge_loop_avoidance.c @@ -258,7 +258,7 @@ static void bla_send_claim(struct bat_priv *bat_priv, uint8_t *mac, struct net_device *soft_iface; uint8_t *hw_src; struct bla_claim_dst local_claim_dest; - uint32_t zeroip = 0; + __be32 zeroip = 0; primary_if = primary_if_get_selected(bat_priv); if (!primary_if) @@ -506,11 +506,11 @@ static void bla_send_announce(struct bat_priv *bat_priv, struct backbone_gw *backbone_gw) { uint8_t mac[ETH_ALEN]; - uint16_t crc; + __be16 crc; memcpy(mac, announce_mac, 4); crc = htons(backbone_gw->crc); - memcpy(&mac[4], (uint8_t *)&crc, 2); + memcpy(&mac[4], &crc, 2); bla_send_claim(bat_priv, mac, backbone_gw->vid, CLAIM_TYPE_ANNOUNCE); @@ -627,7 +627,7 @@ static int handle_announce(struct bat_priv *bat_priv, /* handle as ANNOUNCE frame */ backbone_gw->lasttime = jiffies; - crc = ntohs(*((uint16_t *)(&an_addr[4]))); + crc = ntohs(*((__be16 *)(&an_addr[4]))); bat_dbg(DBG_BLA, bat_priv, "handle_announce(): ANNOUNCE vid %d (sent by %pM)... CRC = %04x\n", @@ -1127,6 +1127,14 @@ out: bla_start_timer(bat_priv); } +/* The hash for claim and backbone hash receive the same key because they + * are getting initialized by hash_new with the same key. Reinitializing + * them with to different keys to allow nested locking without generating + * lockdep warnings + */ +static struct lock_class_key claim_hash_lock_class_key; +static struct lock_class_key backbone_hash_lock_class_key; + /* initialize all bla structures */ int bla_init(struct bat_priv *bat_priv) { @@ -1156,18 +1164,23 @@ int bla_init(struct bat_priv *bat_priv) bat_priv->bcast_duplist_curr = 0; if (bat_priv->claim_hash) - return 1; + return 0; bat_priv->claim_hash = hash_new(128); bat_priv->backbone_hash = hash_new(32); if (!bat_priv->claim_hash || !bat_priv->backbone_hash) - return -1; + return -ENOMEM; + + batadv_hash_set_lock_class(bat_priv->claim_hash, + &claim_hash_lock_class_key); + batadv_hash_set_lock_class(bat_priv->backbone_hash, + &backbone_hash_lock_class_key); bat_dbg(DBG_BLA, bat_priv, "bla hashes initialized\n"); bla_start_timer(bat_priv); - return 1; + return 0; } /** |