• Eric Dumazet's avatar
    net neigh: RCU conversion of neigh hash table · d6bf7817
    Eric Dumazet authored
    David
    
    This is the first step for RCU conversion of neigh code.
    
    Next patches will convert hash_buckets[] and "struct neighbour" to RCU
    protected objects.
    
    Thanks
    
    [PATCH net-next] net neigh: RCU conversion of neigh hash table
    
    Instead of storing hash_buckets, hash_mask and hash_rnd in "struct
    neigh_table", a new structure is defined :
    
    struct neigh_hash_table {
           struct neighbour        **hash_buckets;
           unsigned int            hash_mask;
           __u32                   hash_rnd;
           struct rcu_head         rcu;
    };
    
    And "struct neigh_table" has an RCU protected pointer to such a
    neigh_hash_table.
    
    This means the signature of (*hash)() function changed: We need to add a
    third parameter with the actual hash_rnd value, since this is not
    anymore a neigh_table field.
    Signed-off-by: default avatarEric Dumazet <eric.dumazet@gmail.com>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    d6bf7817
dn_neigh.c 15.5 KB