aboutsummaryrefslogtreecommitdiff
path: root/include/net/udp.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/net/udp.h')
-rw-r--r--include/net/udp.h153
1 files changed, 92 insertions, 61 deletions
diff --git a/include/net/udp.h b/include/net/udp.h
index bb967dd59bf..68a1fefe3df 100644
--- a/include/net/udp.h
+++ b/include/net/udp.h
@@ -23,6 +23,7 @@
#define _UDP_H
#include <linux/list.h>
+#include <linux/bug.h>
#include <net/inet_sock.h>
#include <net/sock.h>
#include <net/snmp.h>
@@ -41,7 +42,7 @@
struct udp_skb_cb {
union {
struct inet_skb_parm h4;
-#if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE)
+#if IS_ENABLED(CONFIG_IPV6)
struct inet6_skb_parm h6;
#endif
} header;
@@ -78,9 +79,9 @@ struct udp_table {
unsigned int log;
};
extern struct udp_table udp_table;
-extern void udp_table_init(struct udp_table *, const char *);
+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)
+ struct net *net, unsigned int num)
{
return &table->hash[udp_hashfn(net, num, table->mask)];
}
@@ -94,15 +95,6 @@ static inline struct udp_hslot *udp_hashslot2(struct udp_table *table,
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;
@@ -119,7 +111,9 @@ struct sk_buff;
*/
static inline __sum16 __udp_lib_checksum_complete(struct sk_buff *skb)
{
- return __skb_checksum_complete_head(skb, UDP_SKB_CB(skb)->cscov);
+ return (UDP_SKB_CB(skb)->cscov == skb->len ?
+ __skb_checksum_complete(skb) :
+ __skb_checksum_complete_head(skb, UDP_SKB_CB(skb)->cscov));
}
static inline int udp_lib_checksum_complete(struct sk_buff *skb)
@@ -144,48 +138,79 @@ static inline __wsum udp_csum_outgoing(struct sock *sk, struct sk_buff *skb)
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;
+}
+
+static inline __sum16 udp_v4_check(int len, __be32 saddr,
+ __be32 daddr, __wsum base)
+{
+ return csum_tcpudp_magic(saddr, daddr, len, IPPROTO_UDP, base);
+}
+
+void udp_set_csum(bool nocheck, struct sk_buff *skb,
+ __be32 saddr, __be32 daddr, int len);
+
/* 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);
+void udp_lib_unhash(struct sock *sk);
+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);
+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 *udp6_lib_lookup(struct net *net, const struct in6_addr *saddr, __be16 sport,
- const struct in6_addr *daddr, __be16 dport,
- int dif);
+void udp_v4_early_demux(struct sk_buff *skb);
+int udp_get_port(struct sock *sk, unsigned short snum,
+ int (*saddr_cmp)(const struct sock *,
+ const struct sock *));
+void udp_err(struct sk_buff *, u32);
+int udp_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
+ size_t len);
+int udp_push_pending_frames(struct sock *sk);
+void udp_flush_pending_frames(struct sock *sk);
+void udp4_hwcsum(struct sk_buff *skb, __be32 src, __be32 dst);
+int udp_rcv(struct sk_buff *skb);
+int udp_ioctl(struct sock *sk, int cmd, unsigned long arg);
+int udp_disconnect(struct sock *sk, int flags);
+unsigned int udp_poll(struct file *file, struct socket *sock, poll_table *wait);
+struct sk_buff *skb_udp_tunnel_segment(struct sk_buff *skb,
+ netdev_features_t features);
+int udp_lib_getsockopt(struct sock *sk, int level, int optname,
+ char __user *optval, int __user *optlen);
+int udp_lib_setsockopt(struct sock *sk, int level, int optname,
+ char __user *optval, unsigned int optlen,
+ int (*push_pending_frames)(struct sock *));
+struct sock *udp4_lib_lookup(struct net *net, __be32 saddr, __be16 sport,
+ __be32 daddr, __be16 dport, int dif);
+struct sock *__udp4_lib_lookup(struct net *net, __be32 saddr, __be16 sport,
+ __be32 daddr, __be16 dport, int dif,
+ struct udp_table *tbl);
+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 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
@@ -206,25 +231,27 @@ extern struct sock *udp6_lib_lookup(struct net *net, const struct in6_addr *sadd
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) \
- 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);
+#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;
- struct file_operations seq_fops;
- struct seq_operations seq_ops;
+ 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 {
@@ -235,15 +262,19 @@ struct udp_iter_state {
};
#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);
+int udp_proc_register(struct net *net, struct udp_seq_afinfo *afinfo);
+void udp_proc_unregister(struct net *net, struct udp_seq_afinfo *afinfo);
-extern int udp4_proc_init(void);
-extern void udp4_proc_exit(void);
+int udp4_proc_init(void);
+void udp4_proc_exit(void);
#endif
-extern void udp_init(void);
+int udpv4_offload_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);
+void udp_init(void);
+
+void udp_encap_enable(void);
+#if IS_ENABLED(CONFIG_IPV6)
+void udpv6_encap_enable(void);
+#endif
#endif /* _UDP_H */
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-04 13:07:03 +0000