diff options
Diffstat (limited to 'include/net/udp.h')
| -rw-r--r-- | include/net/udp.h | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/include/net/udp.h b/include/net/udp.h index 9167281e47dc..af41850f742a 100644 --- a/include/net/udp.h +++ b/include/net/udp.h @@ -63,10 +63,19 @@ struct udp_hslot { spinlock_t lock; } __attribute__((aligned(2 * sizeof(long)))); +/** + * struct udp_table - UDP table + * + * @hash: hash table, sockets are hashed on (local port) + * @hash2: hash table, sockets are hashed on (local port, local address) + * @mask: number of slots in hash tables, minus 1 + * @log: log2(number of slots in hash table) + */ struct udp_table { struct udp_hslot *hash; - unsigned int mask; - unsigned int log; + struct udp_hslot *hash2; + unsigned int mask; + unsigned int log; }; extern struct udp_table udp_table; extern void udp_table_init(struct udp_table *, const char *); @@ -75,6 +84,15 @@ static inline struct udp_hslot *udp_hashslot(struct udp_table *table, { return &table->hash[udp_hashfn(net, num, table->mask)]; } +/* + * For secondary hash, net_hash_mix() is performed before calling + * udp_hashslot2(), this explains difference with udp_hashslot() + */ +static inline struct udp_hslot *udp_hashslot2(struct udp_table *table, + unsigned int hash) +{ + return &table->hash2[hash & table->mask]; +} /* Note: this must match 'valbool' in sock_setsockopt */ #define UDP_CSUM_NOXMIT 1 |