[UDP]: Make full use of proto.h.udp_hash innovation.
After this we have only udp_lib_get_port to get the port and two stubs for ipv4 and ipv6. No difference in udp and udplite except for initialized h.udp_hash member. I tried to find a graceful way to drop the only difference between udp_v4_get_port and udp_v6_get_port (i.e. the rcv_saddr comparison routine), but adding one more callback on the struct proto didn't appear such :( Maybe later. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Pavel Emelyanov
David S. Miller
parent
39d8cda76c
commit
6ba5a3c52d
@ -125,6 +125,8 @@ static inline void udp_lib_close(struct sock *sk, long timeout)
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sk_common_release(sk);
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}
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extern int udp_lib_get_port(struct sock *sk, unsigned short snum,
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int (*)(const struct sock*,const struct sock*));
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/* net/ipv4/udp.c */
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extern int udp_get_port(struct sock *sk, unsigned short snum,
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@ -143,18 +143,17 @@ static inline int __udp_lib_lport_inuse(struct net *net, __u16 num,
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}
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/**
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* __udp_lib_get_port - UDP/-Lite port lookup for IPv4 and IPv6
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* udp_lib_get_port - UDP/-Lite port lookup for IPv4 and IPv6
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*
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* @sk: socket struct in question
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* @snum: port number to look up
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* @udptable: hash list table, must be of UDP_HTABLE_SIZE
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* @saddr_comp: AF-dependent comparison of bound local IP addresses
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*/
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int __udp_lib_get_port(struct sock *sk, unsigned short snum,
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struct hlist_head udptable[],
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int udp_lib_get_port(struct sock *sk, unsigned short snum,
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int (*saddr_comp)(const struct sock *sk1,
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const struct sock *sk2 ) )
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{
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struct hlist_head *udptable = sk->sk_prot->h.udp_hash;
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struct hlist_node *node;
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struct hlist_head *head;
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struct sock *sk2;
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@ -240,13 +239,7 @@ fail:
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return error;
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}
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int udp_get_port(struct sock *sk, unsigned short snum,
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int (*scmp)(const struct sock *, const struct sock *))
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{
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return __udp_lib_get_port(sk, snum, udp_hash, scmp);
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}
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int ipv4_rcv_saddr_equal(const struct sock *sk1, const struct sock *sk2)
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static int ipv4_rcv_saddr_equal(const struct sock *sk1, const struct sock *sk2)
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{
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struct inet_sock *inet1 = inet_sk(sk1), *inet2 = inet_sk(sk2);
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@ -255,9 +248,9 @@ int ipv4_rcv_saddr_equal(const struct sock *sk1, const struct sock *sk2)
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inet1->rcv_saddr == inet2->rcv_saddr ));
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}
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static inline int udp_v4_get_port(struct sock *sk, unsigned short snum)
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int udp_v4_get_port(struct sock *sk, unsigned short snum)
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{
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return udp_get_port(sk, snum, ipv4_rcv_saddr_equal);
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return udp_lib_get_port(sk, snum, ipv4_rcv_saddr_equal);
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}
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/* UDP is nearly always wildcards out the wazoo, it makes no sense to try
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@ -1498,6 +1491,7 @@ struct proto udp_prot = {
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.sysctl_wmem = &sysctl_udp_wmem_min,
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.sysctl_rmem = &sysctl_udp_rmem_min,
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.obj_size = sizeof(struct udp_sock),
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.h.udp_hash = udp_hash,
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#ifdef CONFIG_COMPAT
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.compat_setsockopt = compat_udp_setsockopt,
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.compat_getsockopt = compat_udp_getsockopt,
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@ -1741,12 +1735,12 @@ EXPORT_SYMBOL(udp_disconnect);
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EXPORT_SYMBOL(udp_hash);
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EXPORT_SYMBOL(udp_hash_lock);
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EXPORT_SYMBOL(udp_ioctl);
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EXPORT_SYMBOL(udp_get_port);
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EXPORT_SYMBOL(udp_prot);
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EXPORT_SYMBOL(udp_sendmsg);
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EXPORT_SYMBOL(udp_lib_getsockopt);
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EXPORT_SYMBOL(udp_lib_setsockopt);
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EXPORT_SYMBOL(udp_poll);
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EXPORT_SYMBOL(udp_lib_get_port);
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#ifdef CONFIG_PROC_FS
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EXPORT_SYMBOL(udp_proc_register);
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@ -8,11 +8,7 @@
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extern int __udp4_lib_rcv(struct sk_buff *, struct hlist_head [], int );
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extern void __udp4_lib_err(struct sk_buff *, u32, struct hlist_head []);
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extern int __udp_lib_get_port(struct sock *sk, unsigned short snum,
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struct hlist_head udptable[],
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int (*)(const struct sock*,const struct sock*));
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extern int ipv4_rcv_saddr_equal(const struct sock *, const struct sock *);
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extern int udp_v4_get_port(struct sock *sk, unsigned short snum);
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extern int udp_setsockopt(struct sock *sk, int level, int optname,
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char __user *optval, int optlen);
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@ -17,17 +17,6 @@ DEFINE_SNMP_STAT(struct udp_mib, udplite_statistics) __read_mostly;
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struct hlist_head udplite_hash[UDP_HTABLE_SIZE];
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int udplite_get_port(struct sock *sk, unsigned short p,
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int (*c)(const struct sock *, const struct sock *))
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{
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return __udp_lib_get_port(sk, p, udplite_hash, c);
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}
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static int udplite_v4_get_port(struct sock *sk, unsigned short snum)
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{
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return udplite_get_port(sk, snum, ipv4_rcv_saddr_equal);
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}
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static int udplite_rcv(struct sk_buff *skb)
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{
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return __udp4_lib_rcv(skb, udplite_hash, IPPROTO_UDPLITE);
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@ -63,8 +52,9 @@ struct proto udplite_prot = {
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.backlog_rcv = udp_queue_rcv_skb,
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.hash = udp_lib_hash,
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.unhash = udp_lib_unhash,
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.get_port = udplite_v4_get_port,
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.get_port = udp_v4_get_port,
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.obj_size = sizeof(struct udp_sock),
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.h.udp_hash = udplite_hash,
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#ifdef CONFIG_COMPAT
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.compat_setsockopt = compat_udp_setsockopt,
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.compat_getsockopt = compat_udp_getsockopt,
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@ -118,4 +108,3 @@ out_register_err:
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EXPORT_SYMBOL(udplite_hash);
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EXPORT_SYMBOL(udplite_prot);
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EXPORT_SYMBOL(udplite_get_port);
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@ -51,9 +51,9 @@
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#include <linux/seq_file.h>
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#include "udp_impl.h"
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static inline int udp_v6_get_port(struct sock *sk, unsigned short snum)
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int udp_v6_get_port(struct sock *sk, unsigned short snum)
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{
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return udp_get_port(sk, snum, ipv6_rcv_saddr_equal);
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return udp_lib_get_port(sk, snum, ipv6_rcv_saddr_equal);
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}
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static struct sock *__udp6_lib_lookup(struct net *net,
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@ -1024,6 +1024,7 @@ struct proto udpv6_prot = {
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.sysctl_wmem = &sysctl_udp_wmem_min,
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.sysctl_rmem = &sysctl_udp_rmem_min,
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.obj_size = sizeof(struct udp6_sock),
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.h.udp_hash = udp_hash,
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#ifdef CONFIG_COMPAT
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.compat_setsockopt = compat_udpv6_setsockopt,
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.compat_getsockopt = compat_udpv6_getsockopt,
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@ -11,6 +11,8 @@ extern int __udp6_lib_rcv(struct sk_buff *, struct hlist_head [], int );
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extern void __udp6_lib_err(struct sk_buff *, struct inet6_skb_parm *,
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int , int , int , __be32 , struct hlist_head []);
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extern int udp_v6_get_port(struct sock *sk, unsigned short snum);
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extern int udpv6_getsockopt(struct sock *sk, int level, int optname,
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char __user *optval, int __user *optlen);
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extern int udpv6_setsockopt(struct sock *sk, int level, int optname,
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@ -35,11 +35,6 @@ static struct inet6_protocol udplitev6_protocol = {
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.flags = INET6_PROTO_NOPOLICY|INET6_PROTO_FINAL,
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};
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static int udplite_v6_get_port(struct sock *sk, unsigned short snum)
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{
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return udplite_get_port(sk, snum, ipv6_rcv_saddr_equal);
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}
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DEFINE_PROTO_INUSE(udplitev6)
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struct proto udplitev6_prot = {
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@ -58,8 +53,9 @@ struct proto udplitev6_prot = {
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.backlog_rcv = udpv6_queue_rcv_skb,
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.hash = udp_lib_hash,
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.unhash = udp_lib_unhash,
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.get_port = udplite_v6_get_port,
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.get_port = udp_v6_get_port,
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.obj_size = sizeof(struct udp6_sock),
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.h.udp_hash = udplite_hash,
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#ifdef CONFIG_COMPAT
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.compat_setsockopt = compat_udpv6_setsockopt,
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.compat_getsockopt = compat_udpv6_getsockopt,
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