diff options
Diffstat (limited to 'net/batman-adv/routing.c')
| -rw-r--r-- | net/batman-adv/routing.c | 41 |
1 files changed, 27 insertions, 14 deletions
diff --git a/net/batman-adv/routing.c b/net/batman-adv/routing.c index e8379ba25e95..97f321615686 100644 --- a/net/batman-adv/routing.c +++ b/net/batman-adv/routing.c @@ -153,14 +153,16 @@ static int is_bidirectional_neigh(struct orig_node *orig_node, unsigned char total_count; if (orig_node == orig_neigh_node) { - hlist_for_each_entry(tmp_neigh_node, node, - &orig_node->neigh_list, list) { + rcu_read_lock(); + hlist_for_each_entry_rcu(tmp_neigh_node, node, + &orig_node->neigh_list, list) { if (compare_orig(tmp_neigh_node->addr, orig_neigh_node->orig) && (tmp_neigh_node->if_incoming == if_incoming)) neigh_node = tmp_neigh_node; } + rcu_read_unlock(); if (!neigh_node) neigh_node = create_neighbor(orig_node, @@ -174,14 +176,16 @@ static int is_bidirectional_neigh(struct orig_node *orig_node, neigh_node->last_valid = jiffies; } else { /* find packet count of corresponding one hop neighbor */ - hlist_for_each_entry(tmp_neigh_node, node, - &orig_neigh_node->neigh_list, list) { + rcu_read_lock(); + hlist_for_each_entry_rcu(tmp_neigh_node, node, + &orig_neigh_node->neigh_list, list) { if (compare_orig(tmp_neigh_node->addr, orig_neigh_node->orig) && (tmp_neigh_node->if_incoming == if_incoming)) neigh_node = tmp_neigh_node; } + rcu_read_unlock(); if (!neigh_node) neigh_node = create_neighbor(orig_neigh_node, @@ -266,8 +270,9 @@ static void update_orig(struct bat_priv *bat_priv, bat_dbg(DBG_BATMAN, bat_priv, "update_originator(): " "Searching and updating originator entry of received packet\n"); - hlist_for_each_entry(tmp_neigh_node, node, - &orig_node->neigh_list, list) { + rcu_read_lock(); + hlist_for_each_entry_rcu(tmp_neigh_node, node, + &orig_node->neigh_list, list) { if (compare_orig(tmp_neigh_node->addr, ethhdr->h_source) && (tmp_neigh_node->if_incoming == if_incoming)) { neigh_node = tmp_neigh_node; @@ -282,6 +287,7 @@ static void update_orig(struct bat_priv *bat_priv, tmp_neigh_node->tq_avg = ring_buffer_avg(tmp_neigh_node->tq_recv); } + rcu_read_unlock(); if (!neigh_node) { struct orig_node *orig_tmp; @@ -410,8 +416,9 @@ static char count_real_packets(struct ethhdr *ethhdr, &orig_node->batman_seqno_reset)) return -1; - hlist_for_each_entry(tmp_neigh_node, node, - &orig_node->neigh_list, list) { + rcu_read_lock(); + hlist_for_each_entry_rcu(tmp_neigh_node, node, + &orig_node->neigh_list, list) { is_duplicate |= get_bit_status(tmp_neigh_node->real_bits, orig_node->last_real_seqno, @@ -431,6 +438,7 @@ static char count_real_packets(struct ethhdr *ethhdr, tmp_neigh_node->real_packet_count = bit_packet_count(tmp_neigh_node->real_bits); } + rcu_read_unlock(); if (need_update) { bat_dbg(DBG_BATMAN, bat_priv, @@ -481,15 +489,19 @@ void update_bonding_candidates(struct orig_node *orig_node) * as "bonding partner" */ /* first, zero the list */ - hlist_for_each_entry(tmp_neigh_node, node, - &orig_node->neigh_list, list) { + rcu_read_lock(); + hlist_for_each_entry_rcu(tmp_neigh_node, node, + &orig_node->neigh_list, list) { tmp_neigh_node->next_bond_candidate = NULL; } + rcu_read_unlock(); first_candidate = NULL; last_candidate = NULL; - hlist_for_each_entry(tmp_neigh_node, node, - &orig_node->neigh_list, list) { + + rcu_read_lock(); + hlist_for_each_entry_rcu(tmp_neigh_node, node, + &orig_node->neigh_list, list) { /* only consider if it has the same primary address ... */ if (memcmp(orig_node->orig, @@ -506,8 +518,8 @@ void update_bonding_candidates(struct orig_node *orig_node) * select this candidate because of possible interference. */ interference_candidate = 0; - hlist_for_each_entry(tmp_neigh_node2, node2, - &orig_node->neigh_list, list) { + hlist_for_each_entry_rcu(tmp_neigh_node2, node2, + &orig_node->neigh_list, list) { if (tmp_neigh_node2 == tmp_neigh_node) continue; @@ -541,6 +553,7 @@ void update_bonding_candidates(struct orig_node *orig_node) candidates++; } + rcu_read_unlock(); if (candidates > 0) { first_candidate->next_bond_candidate = last_candidate; |
