diff options
Diffstat (limited to 'ANDROID_3.4.5/include/net/udp.h')
| -rw-r--r-- | ANDROID_3.4.5/include/net/udp.h | 270 |
1 files changed, 0 insertions, 270 deletions
diff --git a/ANDROID_3.4.5/include/net/udp.h b/ANDROID_3.4.5/include/net/udp.h deleted file mode 100644 index 5d606d9d..00000000 --- a/ANDROID_3.4.5/include/net/udp.h +++ /dev/null @@ -1,270 +0,0 @@ -/* - * INET An implementation of the TCP/IP protocol suite for the LINUX - * operating system. INET is implemented using the BSD Socket - * interface as the means of communication with the user level. - * - * Definitions for the UDP module. - * - * Version: @(#)udp.h 1.0.2 05/07/93 - * - * Authors: Ross Biro - * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> - * - * Fixes: - * Alan Cox : Turned on udp checksums. I don't want to - * chase 'memory corruption' bugs that aren't! - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - */ -#ifndef _UDP_H -#define _UDP_H - -#include <linux/list.h> -#include <linux/bug.h> -#include <net/inet_sock.h> -#include <net/sock.h> -#include <net/snmp.h> -#include <net/ip.h> -#include <linux/ipv6.h> -#include <linux/seq_file.h> -#include <linux/poll.h> - -/** - * struct udp_skb_cb - UDP(-Lite) private variables - * - * @header: private variables used by IPv4/IPv6 - * @cscov: checksum coverage length (UDP-Lite only) - * @partial_cov: if set indicates partial csum coverage - */ -struct udp_skb_cb { - union { - struct inet_skb_parm h4; -#if IS_ENABLED(CONFIG_IPV6) - struct inet6_skb_parm h6; -#endif - } header; - __u16 cscov; - __u8 partial_cov; -}; -#define UDP_SKB_CB(__skb) ((struct udp_skb_cb *)((__skb)->cb)) - -/** - * 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 - -/* Used by SunRPC/xprt layer. */ -#define UDP_CSUM_NORCV 2 - -/* Default, as per the RFC, is to always do csums. */ -#define UDP_CSUM_DEFAULT 0 - -extern struct proto udp_prot; - -extern atomic_long_t udp_memory_allocated; - -/* sysctl variables for udp */ -extern long sysctl_udp_mem[3]; -extern int sysctl_udp_rmem_min; -extern int sysctl_udp_wmem_min; - -struct sk_buff; - -/* - * Generic checksumming routines for UDP(-Lite) v4 and v6 - */ -static inline __sum16 __udp_lib_checksum_complete(struct sk_buff *skb) -{ - return __skb_checksum_complete_head(skb, UDP_SKB_CB(skb)->cscov); -} - -static inline int udp_lib_checksum_complete(struct sk_buff *skb) -{ - return !skb_csum_unnecessary(skb) && - __udp_lib_checksum_complete(skb); -} - -/** - * udp_csum_outgoing - compute UDPv4/v6 checksum over fragments - * @sk: socket we are writing to - * @skb: sk_buff containing the filled-in UDP header - * (checksum field must be zeroed out) - */ -static inline __wsum udp_csum_outgoing(struct sock *sk, struct sk_buff *skb) -{ - __wsum csum = csum_partial(skb_transport_header(skb), - sizeof(struct udphdr), 0); - skb_queue_walk(&sk->sk_write_queue, skb) { - csum = csum_add(csum, skb->csum); - } - return csum; -} - -static inline __wsum udp_csum(struct sk_buff *skb) -{ - __wsum csum = csum_partial(skb_transport_header(skb), - sizeof(struct udphdr), skb->csum); - - for (skb = skb_shinfo(skb)->frag_list; skb; skb = skb->next) { - csum = csum_add(csum, skb->csum); - } - return csum; -} - -/* hash routines shared between UDPv4/6 and UDP-Litev4/6 */ -static inline void udp_lib_hash(struct sock *sk) -{ - BUG(); -} - -extern void udp_lib_unhash(struct sock *sk); -extern void udp_lib_rehash(struct sock *sk, u16 new_hash); - -static inline void udp_lib_close(struct sock *sk, long timeout) -{ - sk_common_release(sk); -} - -extern int udp_lib_get_port(struct sock *sk, unsigned short snum, - 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, - int (*saddr_cmp)(const struct sock *, - const struct sock *)); -extern void udp_err(struct sk_buff *, u32); -extern int udp_sendmsg(struct kiocb *iocb, struct sock *sk, - struct msghdr *msg, size_t len); -extern void udp_flush_pending_frames(struct sock *sk); -extern int udp_rcv(struct sk_buff *skb); -extern int udp_ioctl(struct sock *sk, int cmd, unsigned long arg); -extern int udp_disconnect(struct sock *sk, int flags); -extern unsigned int udp_poll(struct file *file, struct socket *sock, - poll_table *wait); -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, unsigned int optlen, - int (*push_pending_frames)(struct sock *)); -extern struct sock *udp4_lib_lookup(struct net *net, __be32 saddr, __be16 sport, - __be32 daddr, __be16 dport, - int dif); -extern struct sock *__udp4_lib_lookup(struct net *net, __be32 saddr, __be16 sport, - __be32 daddr, __be16 dport, - int dif, struct udp_table *tbl); -extern struct sock *udp6_lib_lookup(struct net *net, const struct in6_addr *saddr, __be16 sport, - const struct in6_addr *daddr, __be16 dport, - int dif); -extern struct sock *__udp6_lib_lookup(struct net *net, const struct in6_addr *saddr, __be16 sport, - const struct in6_addr *daddr, __be16 dport, - int dif, struct udp_table *tbl); - -/* - * SNMP statistics for UDP and UDP-Lite - */ -#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 IS_ENABLED(CONFIG_IPV6) -#define UDPX_INC_STATS_BH(sk, field) \ - do { \ - if ((sk)->sk_family == AF_INET) \ - UDP_INC_STATS_BH(sock_net(sk), field, 0); \ - else \ - 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) -#endif - -/* /proc */ -int udp_seq_open(struct inode *inode, struct file *file); - -struct udp_seq_afinfo { - char *name; - sa_family_t family; - struct udp_table *udp_table; - const struct file_operations *seq_fops; - struct seq_operations seq_ops; -}; - -struct udp_iter_state { - struct seq_net_private p; - sa_family_t family; - int bucket; - struct udp_table *udp_table; -}; - -#ifdef CONFIG_PROC_FS -extern int udp_proc_register(struct net *net, struct udp_seq_afinfo *afinfo); -extern void udp_proc_unregister(struct net *net, struct udp_seq_afinfo *afinfo); - -extern int udp4_proc_init(void); -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, - netdev_features_t features); -#endif /* _UDP_H */ |