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tipc: Ensure broadcast link spinlock is held when updating node map

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Fixes oversight that allowed broadcast link node map to be updated without
first taking the broadcast link spinlock that protects the map. As part
of this fix the node map has been incorporated into the broadcast link
structure to make the need for such protection more evident.

Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
This commit is contained in:
Allan Stephens 2011-10-24 11:18:12 -04:00 • committed by Paul Gortmaker
parent c47e9b9188
commit cd3decdfd1
3 changed files with 22 additions and 10 deletions
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4
net/tipc/node.c
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@ -307,7 +307,7 @@ static void node_established_contact(struct tipc_node *n_ptr)
n_ptr->bclink.acked = tipc_bclink_get_last_sent();
if (n_ptr->bclink.supported) {
tipc_nmap_add(&tipc_bcast_nmap, n_ptr->addr);
tipc_bclink_add_node(n_ptr->addr);
if (n_ptr->addr < tipc_own_addr)
tipc_own_tag++;
}
@ -350,7 +350,7 @@ static void node_lost_contact(struct tipc_node *n_ptr)
n_ptr->bclink.defragm = NULL;
}
tipc_nmap_remove(&tipc_bcast_nmap, n_ptr->addr);
tipc_bclink_remove_node(n_ptr->addr);
tipc_bclink_acknowledge(n_ptr,
mod(n_ptr->bclink.acked + 10000));
if (n_ptr->addr < tipc_own_addr)