X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=include%2Fnet%2Fudp.h;h=5348d80b25bb8a0593c9f0a80f42c4a6b2aeebc9;hb=5ad6468801d28c4d4ac9f48ec19297817c915f6a;hp=7b18cfb2fe0b77a33d898d46b3ddaa99907ddb28;hpb=0283328e2360bbf3081e97f1b720dd4c4dbae111;p=safe%2Fjmp%2Flinux-2.6 diff --git a/include/net/udp.h b/include/net/udp.h index 7b18cfb..5348d80 100644 --- a/include/net/udp.h +++ b/include/net/udp.h @@ -50,9 +50,49 @@ struct udp_skb_cb { }; #define UDP_SKB_CB(__skb) ((struct udp_skb_cb *)((__skb)->cb)) -extern struct hlist_head udp_hash[UDP_HTABLE_SIZE]; -extern rwlock_t udp_hash_lock; +/** + * struct udp_hslot - UDP hash slot + * + * @head: head of list of sockets + * @count: number of sockets in 'head' list + * @lock: spinlock protecting changes to head/count + */ +struct udp_hslot { + struct hlist_nulls_head head; + int count; + 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; + 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 *); +static inline struct udp_hslot *udp_hashslot(struct udp_table *table, + struct net *net, unsigned num) +{ + 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 @@ -110,15 +150,7 @@ static inline void udp_lib_hash(struct sock *sk) BUG(); } -static inline void udp_lib_unhash(struct sock *sk) -{ - write_lock_bh(&udp_hash_lock); - if (sk_del_node_init(sk)) { - inet_sk(sk)->num = 0; - sock_prot_inuse_add(sock_net(sk), sk->sk_prot, -1); - } - write_unlock_bh(&udp_hash_lock); -} +extern void udp_lib_unhash(struct sock *sk); static inline void udp_lib_close(struct sock *sk, long timeout) { @@ -126,7 +158,8 @@ static inline void udp_lib_close(struct sock *sk, long timeout) } extern int udp_lib_get_port(struct sock *sk, unsigned short snum, - int (*)(const struct sock*,const struct sock*)); + int (*)(const struct sock *,const struct sock *), + unsigned int hash2_nulladdr); /* net/ipv4/udp.c */ extern int udp_get_port(struct sock *sk, unsigned short snum, @@ -145,32 +178,31 @@ extern unsigned int udp_poll(struct file *file, struct socket *sock, extern int udp_lib_getsockopt(struct sock *sk, int level, int optname, char __user *optval, int __user *optlen); extern int udp_lib_setsockopt(struct sock *sk, int level, int optname, - char __user *optval, int optlen, + char __user *optval, unsigned int optlen, int (*push_pending_frames)(struct sock *)); -DECLARE_SNMP_STAT(struct udp_mib, udp_statistics); -DECLARE_SNMP_STAT(struct udp_mib, udp_stats_in6); - -/* UDP-Lite does not have a standardized MIB yet, so we inherit from UDP */ -DECLARE_SNMP_STAT(struct udp_mib, udplite_statistics); -DECLARE_SNMP_STAT(struct udp_mib, udplite_stats_in6); +extern struct sock *udp4_lib_lookup(struct net *net, __be32 saddr, __be16 sport, + __be32 daddr, __be16 dport, + int dif); /* * SNMP statistics for UDP and UDP-Lite */ -#define UDP_INC_STATS_USER(net, field, is_udplite) do { (void)net; \ - if (is_udplite) SNMP_INC_STATS_USER(udplite_statistics, field); \ - else SNMP_INC_STATS_USER(udp_statistics, field); } while(0) -#define UDP_INC_STATS_BH(net, field, is_udplite) do { (void)net; \ - if (is_udplite) SNMP_INC_STATS_BH(udplite_statistics, field); \ - else SNMP_INC_STATS_BH(udp_statistics, field); } while(0) - -#define UDP6_INC_STATS_BH(field, is_udplite) do { \ - if (is_udplite) SNMP_INC_STATS_BH(udplite_stats_in6, field); \ - else SNMP_INC_STATS_BH(udp_stats_in6, field); } while(0) -#define UDP6_INC_STATS_USER(field, is_udplite) do { \ - if (is_udplite) SNMP_INC_STATS_USER(udplite_stats_in6, field); \ - else SNMP_INC_STATS_USER(udp_stats_in6, field); } while(0) +#define UDP_INC_STATS_USER(net, field, is_udplite) do { \ + if (is_udplite) SNMP_INC_STATS_USER((net)->mib.udplite_statistics, field); \ + else SNMP_INC_STATS_USER((net)->mib.udp_statistics, field); } while(0) +#define UDP_INC_STATS_BH(net, field, is_udplite) do { \ + if (is_udplite) SNMP_INC_STATS_BH((net)->mib.udplite_statistics, field); \ + else SNMP_INC_STATS_BH((net)->mib.udp_statistics, field); } while(0) + +#define UDP6_INC_STATS_BH(net, field, is_udplite) do { \ + if (is_udplite) SNMP_INC_STATS_BH((net)->mib.udplite_stats_in6, field);\ + else SNMP_INC_STATS_BH((net)->mib.udp_stats_in6, field); \ +} while(0) +#define UDP6_INC_STATS_USER(net, field, __lite) do { \ + if (__lite) SNMP_INC_STATS_USER((net)->mib.udplite_stats_in6, field); \ + else SNMP_INC_STATS_USER((net)->mib.udp_stats_in6, field); \ +} while(0) #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) #define UDPX_INC_STATS_BH(sk, field) \ @@ -178,7 +210,7 @@ DECLARE_SNMP_STAT(struct udp_mib, udplite_stats_in6); if ((sk)->sk_family == AF_INET) \ UDP_INC_STATS_BH(sock_net(sk), field, 0); \ else \ - UDP6_INC_STATS_BH(field, 0); \ + UDP6_INC_STATS_BH(sock_net(sk), field, 0); \ } while (0); #else #define UDPX_INC_STATS_BH(sk, field) UDP_INC_STATS_BH(sock_net(sk), field, 0) @@ -188,7 +220,7 @@ DECLARE_SNMP_STAT(struct udp_mib, udplite_stats_in6); struct udp_seq_afinfo { char *name; sa_family_t family; - struct hlist_head *hashtable; + struct udp_table *udp_table; struct file_operations seq_fops; struct seq_operations seq_ops; }; @@ -197,7 +229,7 @@ struct udp_iter_state { struct seq_net_private p; sa_family_t family; int bucket; - struct hlist_head *hashtable; + struct udp_table *udp_table; }; #ifdef CONFIG_PROC_FS @@ -209,4 +241,7 @@ extern void udp4_proc_exit(void); #endif extern void udp_init(void); + +extern int udp4_ufo_send_check(struct sk_buff *skb); +extern struct sk_buff *udp4_ufo_fragment(struct sk_buff *skb, int features); #endif /* _UDP_H */