[NET]: Supporting UDP-Lite (RFC 3828) in Linux
This is a revision of the previously submitted patch, which alters
the way files are organized and compiled in the following manner:
* UDP and UDP-Lite now use separate object files
* source file dependencies resolved via header files
net/ipv{4,6}/udp_impl.h
* order of inclusion files in udp.c/udplite.c adapted
accordingly
[NET/IPv4]: Support for the UDP-Lite protocol (RFC 3828)
This patch adds support for UDP-Lite to the IPv4 stack, provided as an
extension to the existing UDPv4 code:
* generic routines are all located in net/ipv4/udp.c
* UDP-Lite specific routines are in net/ipv4/udplite.c
* MIB/statistics support in /proc/net/snmp and /proc/net/udplite
* shared API with extensions for partial checksum coverage
[NET/IPv6]: Extension for UDP-Lite over IPv6
It extends the existing UDPv6 code base with support for UDP-Lite
in the same manner as per UDPv4. In particular,
* UDPv6 generic and shared code is in net/ipv6/udp.c
* UDP-Litev6 specific extensions are in net/ipv6/udplite.c
* MIB/statistics support in /proc/net/snmp6 and /proc/net/udplite6
* support for IPV6_ADDRFORM
* aligned the coding style of protocol initialisation with af_inet6.c
* made the error handling in udpv6_queue_rcv_skb consistent;
to return `-1' on error on all error cases
* consolidation of shared code
[NET]: UDP-Lite Documentation and basic XFRM/Netfilter support
The UDP-Lite patch further provides
* API documentation for UDP-Lite
* basic xfrm support
* basic netfilter support for IPv4 and IPv6 (LOG target)
Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index 886300d..5a64027 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -38,26 +38,18 @@
#include <linux/skbuff.h>
#include <asm/uaccess.h>
-#include <net/sock.h>
-#include <net/snmp.h>
-
-#include <net/ipv6.h>
#include <net/ndisc.h>
#include <net/protocol.h>
#include <net/transp_v6.h>
#include <net/ip6_route.h>
-#include <net/addrconf.h>
-#include <net/ip.h>
-#include <net/udp.h>
#include <net/raw.h>
-#include <net/inet_common.h>
#include <net/tcp_states.h>
-
#include <net/ip6_checksum.h>
#include <net/xfrm.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
+#include "udp_impl.h"
DEFINE_SNMP_STAT(struct udp_mib, udp_stats_in6) __read_mostly;
@@ -66,23 +58,9 @@
return udp_get_port(sk, snum, ipv6_rcv_saddr_equal);
}
-static void udp_v6_hash(struct sock *sk)
-{
- BUG();
-}
-
-static void udp_v6_unhash(struct sock *sk)
-{
- write_lock_bh(&udp_hash_lock);
- if (sk_del_node_init(sk)) {
- inet_sk(sk)->num = 0;
- sock_prot_dec_use(sk->sk_prot);
- }
- write_unlock_bh(&udp_hash_lock);
-}
-
-static struct sock *udp_v6_lookup(struct in6_addr *saddr, u16 sport,
- struct in6_addr *daddr, u16 dport, int dif)
+static struct sock *__udp6_lib_lookup(struct in6_addr *saddr, __be16 sport,
+ struct in6_addr *daddr, __be16 dport,
+ int dif, struct hlist_head udptable[])
{
struct sock *sk, *result = NULL;
struct hlist_node *node;
@@ -90,7 +68,7 @@
int badness = -1;
read_lock(&udp_hash_lock);
- sk_for_each(sk, node, &udp_hash[hnum & (UDP_HTABLE_SIZE - 1)]) {
+ sk_for_each(sk, node, &udptable[hnum & (UDP_HTABLE_SIZE - 1)]) {
struct inet_sock *inet = inet_sk(sk);
if (inet->num == hnum && sk->sk_family == PF_INET6) {
@@ -132,20 +110,11 @@
}
/*
- *
- */
-
-static void udpv6_close(struct sock *sk, long timeout)
-{
- sk_common_release(sk);
-}
-
-/*
* This should be easy, if there is something there we
* return it, otherwise we block.
*/
-static int udpv6_recvmsg(struct kiocb *iocb, struct sock *sk,
+int udpv6_recvmsg(struct kiocb *iocb, struct sock *sk,
struct msghdr *msg, size_t len,
int noblock, int flags, int *addr_len)
{
@@ -153,7 +122,7 @@
struct inet_sock *inet = inet_sk(sk);
struct sk_buff *skb;
size_t copied;
- int err;
+ int err, copy_only, is_udplite = IS_UDPLITE(sk);
if (addr_len)
*addr_len=sizeof(struct sockaddr_in6);
@@ -172,15 +141,21 @@
msg->msg_flags |= MSG_TRUNC;
}
- if (skb->ip_summed==CHECKSUM_UNNECESSARY) {
- err = skb_copy_datagram_iovec(skb, sizeof(struct udphdr), msg->msg_iov,
- copied);
- } else if (msg->msg_flags&MSG_TRUNC) {
- if (__skb_checksum_complete(skb))
+ /*
+ * Decide whether to checksum and/or copy data.
+ */
+ copy_only = (skb->ip_summed==CHECKSUM_UNNECESSARY);
+
+ if (is_udplite || (!copy_only && msg->msg_flags&MSG_TRUNC)) {
+ if (__udp_lib_checksum_complete(skb))
goto csum_copy_err;
- err = skb_copy_datagram_iovec(skb, sizeof(struct udphdr), msg->msg_iov,
- copied);
- } else {
+ copy_only = 1;
+ }
+
+ if (copy_only)
+ err = skb_copy_datagram_iovec(skb, sizeof(struct udphdr),
+ msg->msg_iov, copied );
+ else {
err = skb_copy_and_csum_datagram_iovec(skb, sizeof(struct udphdr), msg->msg_iov);
if (err == -EINVAL)
goto csum_copy_err;
@@ -231,14 +206,15 @@
skb_kill_datagram(sk, skb, flags);
if (flags & MSG_DONTWAIT) {
- UDP6_INC_STATS_USER(UDP_MIB_INERRORS);
+ UDP6_INC_STATS_USER(UDP_MIB_INERRORS, is_udplite);
return -EAGAIN;
}
goto try_again;
}
-static void udpv6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
- int type, int code, int offset, __be32 info)
+void __udp6_lib_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
+ int type, int code, int offset, __be32 info,
+ struct hlist_head udptable[] )
{
struct ipv6_pinfo *np;
struct ipv6hdr *hdr = (struct ipv6hdr*)skb->data;
@@ -248,8 +224,8 @@
struct sock *sk;
int err;
- sk = udp_v6_lookup(daddr, uh->dest, saddr, uh->source, inet6_iif(skb));
-
+ sk = __udp6_lib_lookup(daddr, uh->dest,
+ saddr, uh->source, inet6_iif(skb), udptable);
if (sk == NULL)
return;
@@ -270,31 +246,55 @@
sock_put(sk);
}
-static inline int udpv6_queue_rcv_skb(struct sock * sk, struct sk_buff *skb)
+static __inline__ void udpv6_err(struct sk_buff *skb,
+ struct inet6_skb_parm *opt, int type,
+ int code, int offset, __u32 info )
{
+ return __udp6_lib_err(skb, opt, type, code, offset, info, udp_hash);
+}
+
+int udpv6_queue_rcv_skb(struct sock * sk, struct sk_buff *skb)
+{
+ struct udp_sock *up = udp_sk(sk);
int rc;
- if (!xfrm6_policy_check(sk, XFRM_POLICY_IN, skb)) {
- kfree_skb(skb);
- return -1;
+ if (!xfrm6_policy_check(sk, XFRM_POLICY_IN, skb))
+ goto drop;
+
+ /*
+ * UDP-Lite specific tests, ignored on UDP sockets (see net/ipv4/udp.c).
+ */
+ if ((up->pcflag & UDPLITE_RECV_CC) && UDP_SKB_CB(skb)->partial_cov) {
+
+ if (up->pcrlen == 0) { /* full coverage was set */
+ LIMIT_NETDEBUG(KERN_WARNING "UDPLITE6: partial coverage"
+ " %d while full coverage %d requested\n",
+ UDP_SKB_CB(skb)->cscov, skb->len);
+ goto drop;
+ }
+ if (UDP_SKB_CB(skb)->cscov < up->pcrlen) {
+ LIMIT_NETDEBUG(KERN_WARNING "UDPLITE6: coverage %d "
+ "too small, need min %d\n",
+ UDP_SKB_CB(skb)->cscov, up->pcrlen);
+ goto drop;
+ }
}
- if (skb_checksum_complete(skb)) {
- UDP6_INC_STATS_BH(UDP_MIB_INERRORS);
- kfree_skb(skb);
- return 0;
- }
+ if (udp_lib_checksum_complete(skb))
+ goto drop;
if ((rc = sock_queue_rcv_skb(sk,skb)) < 0) {
/* Note that an ENOMEM error is charged twice */
if (rc == -ENOMEM)
- UDP6_INC_STATS_BH(UDP_MIB_RCVBUFERRORS);
- UDP6_INC_STATS_BH(UDP_MIB_INERRORS);
- kfree_skb(skb);
- return 0;
+ UDP6_INC_STATS_BH(UDP_MIB_RCVBUFERRORS, up->pcflag);
+ goto drop;
}
- UDP6_INC_STATS_BH(UDP_MIB_INDATAGRAMS);
+ UDP6_INC_STATS_BH(UDP_MIB_INDATAGRAMS, up->pcflag);
return 0;
+drop:
+ UDP6_INC_STATS_BH(UDP_MIB_INERRORS, up->pcflag);
+ kfree_skb(skb);
+ return -1;
}
static struct sock *udp_v6_mcast_next(struct sock *sk,
@@ -338,15 +338,15 @@
* Note: called only from the BH handler context,
* so we don't need to lock the hashes.
*/
-static void udpv6_mcast_deliver(struct udphdr *uh,
- struct in6_addr *saddr, struct in6_addr *daddr,
- struct sk_buff *skb)
+static int __udp6_lib_mcast_deliver(struct sk_buff *skb, struct in6_addr *saddr,
+ struct in6_addr *daddr, struct hlist_head udptable[])
{
struct sock *sk, *sk2;
+ const struct udphdr *uh = skb->h.uh;
int dif;
read_lock(&udp_hash_lock);
- sk = sk_head(&udp_hash[ntohs(uh->dest) & (UDP_HTABLE_SIZE - 1)]);
+ sk = sk_head(&udptable[ntohs(uh->dest) & (UDP_HTABLE_SIZE - 1)]);
dif = inet6_iif(skb);
sk = udp_v6_mcast_next(sk, uh->dest, daddr, uh->source, saddr, dif);
if (!sk) {
@@ -364,9 +364,34 @@
udpv6_queue_rcv_skb(sk, skb);
out:
read_unlock(&udp_hash_lock);
+ return 0;
}
-static int udpv6_rcv(struct sk_buff **pskb)
+static inline int udp6_csum_init(struct sk_buff *skb, struct udphdr *uh)
+
+{
+ if (uh->check == 0) {
+ /* RFC 2460 section 8.1 says that we SHOULD log
+ this error. Well, it is reasonable.
+ */
+ LIMIT_NETDEBUG(KERN_INFO "IPv6: udp checksum is 0\n");
+ return 1;
+ }
+ if (skb->ip_summed == CHECKSUM_COMPLETE &&
+ !csum_ipv6_magic(&skb->nh.ipv6h->saddr, &skb->nh.ipv6h->daddr,
+ skb->len, IPPROTO_UDP, skb->csum ))
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+
+ if (skb->ip_summed != CHECKSUM_UNNECESSARY)
+ skb->csum = ~csum_ipv6_magic(&skb->nh.ipv6h->saddr,
+ &skb->nh.ipv6h->daddr,
+ skb->len, IPPROTO_UDP, 0);
+
+ return (UDP_SKB_CB(skb)->partial_cov = 0);
+}
+
+int __udp6_lib_rcv(struct sk_buff **pskb, struct hlist_head udptable[],
+ int is_udplite)
{
struct sk_buff *skb = *pskb;
struct sock *sk;
@@ -383,44 +408,39 @@
uh = skb->h.uh;
ulen = ntohs(uh->len);
-
- /* Check for jumbo payload */
- if (ulen == 0)
- ulen = skb->len;
-
- if (ulen > skb->len || ulen < sizeof(*uh))
+ if (ulen > skb->len)
goto short_packet;
- if (uh->check == 0) {
- /* RFC 2460 section 8.1 says that we SHOULD log
- this error. Well, it is reasonable.
- */
- LIMIT_NETDEBUG(KERN_INFO "IPv6: udp checksum is 0\n");
- goto discard;
- }
+ if(! is_udplite ) { /* UDP validates ulen. */
- if (ulen < skb->len) {
- if (pskb_trim_rcsum(skb, ulen))
+ /* Check for jumbo payload */
+ if (ulen == 0)
+ ulen = skb->len;
+
+ if (ulen < sizeof(*uh))
+ goto short_packet;
+
+ if (ulen < skb->len) {
+ if (pskb_trim_rcsum(skb, ulen))
+ goto short_packet;
+ saddr = &skb->nh.ipv6h->saddr;
+ daddr = &skb->nh.ipv6h->daddr;
+ uh = skb->h.uh;
+ }
+
+ if (udp6_csum_init(skb, uh))
goto discard;
- saddr = &skb->nh.ipv6h->saddr;
- daddr = &skb->nh.ipv6h->daddr;
- uh = skb->h.uh;
+
+ } else { /* UDP-Lite validates cscov. */
+ if (udplite6_csum_init(skb, uh))
+ goto discard;
}
- if (skb->ip_summed == CHECKSUM_COMPLETE &&
- !csum_ipv6_magic(saddr, daddr, ulen, IPPROTO_UDP, skb->csum))
- skb->ip_summed = CHECKSUM_UNNECESSARY;
-
- if (skb->ip_summed != CHECKSUM_UNNECESSARY)
- skb->csum = ~csum_ipv6_magic(saddr, daddr, ulen, IPPROTO_UDP, 0);
-
/*
* Multicast receive code
*/
- if (ipv6_addr_is_multicast(daddr)) {
- udpv6_mcast_deliver(uh, saddr, daddr, skb);
- return 0;
- }
+ if (ipv6_addr_is_multicast(daddr))
+ return __udp6_lib_mcast_deliver(skb, saddr, daddr, udptable);
/* Unicast */
@@ -428,15 +448,16 @@
* check socket cache ... must talk to Alan about his plans
* for sock caches... i'll skip this for now.
*/
- sk = udp_v6_lookup(saddr, uh->source, daddr, uh->dest, inet6_iif(skb));
+ sk = __udp6_lib_lookup(saddr, uh->source,
+ daddr, uh->dest, inet6_iif(skb), udptable);
if (sk == NULL) {
if (!xfrm6_policy_check(NULL, XFRM_POLICY_IN, skb))
goto discard;
- if (skb_checksum_complete(skb))
+ if (udp_lib_checksum_complete(skb))
goto discard;
- UDP6_INC_STATS_BH(UDP_MIB_NOPORTS);
+ UDP6_INC_STATS_BH(UDP_MIB_NOPORTS, is_udplite);
icmpv6_send(skb, ICMPV6_DEST_UNREACH, ICMPV6_PORT_UNREACH, 0, dev);
@@ -451,14 +472,20 @@
return(0);
short_packet:
- if (net_ratelimit())
- printk(KERN_DEBUG "UDP: short packet: %d/%u\n", ulen, skb->len);
+ LIMIT_NETDEBUG(KERN_DEBUG "UDP%sv6: short packet: %d/%u\n",
+ is_udplite? "-Lite" : "", ulen, skb->len);
discard:
- UDP6_INC_STATS_BH(UDP_MIB_INERRORS);
+ UDP6_INC_STATS_BH(UDP_MIB_INERRORS, is_udplite);
kfree_skb(skb);
return(0);
}
+
+static __inline__ int udpv6_rcv(struct sk_buff **pskb)
+{
+ return __udp6_lib_rcv(pskb, udp_hash, 0);
+}
+
/*
* Throw away all pending data and cancel the corking. Socket is locked.
*/
@@ -484,6 +511,7 @@
struct inet_sock *inet = inet_sk(sk);
struct flowi *fl = &inet->cork.fl;
int err = 0;
+ u32 csum = 0;
/* Grab the skbuff where UDP header space exists. */
if ((skb = skb_peek(&sk->sk_write_queue)) == NULL)
@@ -498,35 +526,17 @@
uh->len = htons(up->len);
uh->check = 0;
- if (sk->sk_no_check == UDP_CSUM_NOXMIT) {
- skb->ip_summed = CHECKSUM_NONE;
- goto send;
- }
+ if (up->pcflag)
+ csum = udplite_csum_outgoing(sk, skb);
+ else
+ csum = udp_csum_outgoing(sk, skb);
- if (skb_queue_len(&sk->sk_write_queue) == 1) {
- skb->csum = csum_partial((char *)uh,
- sizeof(struct udphdr), skb->csum);
- uh->check = csum_ipv6_magic(&fl->fl6_src,
- &fl->fl6_dst,
- up->len, fl->proto, skb->csum);
- } else {
- u32 tmp_csum = 0;
-
- skb_queue_walk(&sk->sk_write_queue, skb) {
- tmp_csum = csum_add(tmp_csum, skb->csum);
- }
- tmp_csum = csum_partial((char *)uh,
- sizeof(struct udphdr), tmp_csum);
- tmp_csum = csum_ipv6_magic(&fl->fl6_src,
- &fl->fl6_dst,
- up->len, fl->proto, tmp_csum);
- uh->check = tmp_csum;
-
- }
+ /* add protocol-dependent pseudo-header */
+ uh->check = csum_ipv6_magic(&fl->fl6_src, &fl->fl6_dst,
+ up->len, fl->proto, csum );
if (uh->check == 0)
uh->check = -1;
-send:
err = ip6_push_pending_frames(sk);
out:
up->len = 0;
@@ -534,7 +544,7 @@
return err;
}
-static int udpv6_sendmsg(struct kiocb *iocb, struct sock *sk,
+int udpv6_sendmsg(struct kiocb *iocb, struct sock *sk,
struct msghdr *msg, size_t len)
{
struct ipv6_txoptions opt_space;
@@ -554,6 +564,8 @@
int corkreq = up->corkflag || msg->msg_flags&MSG_MORE;
int err;
int connected = 0;
+ int is_udplite = up->pcflag;
+ int (*getfrag)(void *, char *, int, int, int, struct sk_buff *);
/* destination address check */
if (sin6) {
@@ -694,7 +706,7 @@
opt = fl6_merge_options(&opt_space, flowlabel, opt);
opt = ipv6_fixup_options(&opt_space, opt);
- fl.proto = IPPROTO_UDP;
+ fl.proto = sk->sk_protocol;
ipv6_addr_copy(&fl.fl6_dst, daddr);
if (ipv6_addr_any(&fl.fl6_src) && !ipv6_addr_any(&np->saddr))
ipv6_addr_copy(&fl.fl6_src, &np->saddr);
@@ -761,7 +773,8 @@
do_append_data:
up->len += ulen;
- err = ip6_append_data(sk, ip_generic_getfrag, msg->msg_iov, ulen,
+ getfrag = is_udplite ? udplite_getfrag : ip_generic_getfrag;
+ err = ip6_append_data(sk, getfrag, msg->msg_iov, ulen,
sizeof(struct udphdr), hlimit, tclass, opt, &fl,
(struct rt6_info*)dst,
corkreq ? msg->msg_flags|MSG_MORE : msg->msg_flags);
@@ -793,7 +806,7 @@
out:
fl6_sock_release(flowlabel);
if (!err) {
- UDP6_INC_STATS_USER(UDP_MIB_OUTDATAGRAMS);
+ UDP6_INC_STATS_USER(UDP_MIB_OUTDATAGRAMS, is_udplite);
return len;
}
/*
@@ -804,7 +817,7 @@
* seems like overkill.
*/
if (err == -ENOBUFS || test_bit(SOCK_NOSPACE, &sk->sk_socket->flags)) {
- UDP6_INC_STATS_USER(UDP_MIB_SNDBUFERRORS);
+ UDP6_INC_STATS_USER(UDP_MIB_SNDBUFERRORS, is_udplite);
}
return err;
@@ -816,7 +829,7 @@
goto out;
}
-static int udpv6_destroy_sock(struct sock *sk)
+int udpv6_destroy_sock(struct sock *sk)
{
lock_sock(sk);
udp_v6_flush_pending_frames(sk);
@@ -854,7 +867,6 @@
release_sock(sk);
}
break;
-
case UDP_ENCAP:
switch (val) {
case 0:
@@ -866,6 +878,24 @@
}
break;
+ case UDPLITE_SEND_CSCOV:
+ if (!up->pcflag) /* Disable the option on UDP sockets */
+ return -ENOPROTOOPT;
+ if (val != 0 && val < 8) /* Illegal coverage: use default (8) */
+ val = 8;
+ up->pcslen = val;
+ up->pcflag |= UDPLITE_SEND_CC;
+ break;
+
+ case UDPLITE_RECV_CSCOV:
+ if (!up->pcflag) /* Disable the option on UDP sockets */
+ return -ENOPROTOOPT;
+ if (val != 0 && val < 8) /* Avoid silly minimal values. */
+ val = 8;
+ up->pcrlen = val;
+ up->pcflag |= UDPLITE_RECV_CC;
+ break;
+
default:
err = -ENOPROTOOPT;
break;
@@ -874,22 +904,21 @@
return err;
}
-static int udpv6_setsockopt(struct sock *sk, int level, int optname,
- char __user *optval, int optlen)
+int udpv6_setsockopt(struct sock *sk, int level, int optname,
+ char __user *optval, int optlen)
{
- if (level != SOL_UDP)
- return ipv6_setsockopt(sk, level, optname, optval, optlen);
- return do_udpv6_setsockopt(sk, level, optname, optval, optlen);
+ if (level == SOL_UDP || level == SOL_UDPLITE)
+ return do_udpv6_setsockopt(sk, level, optname, optval, optlen);
+ return ipv6_setsockopt(sk, level, optname, optval, optlen);
}
#ifdef CONFIG_COMPAT
-static int compat_udpv6_setsockopt(struct sock *sk, int level, int optname,
- char __user *optval, int optlen)
+int compat_udpv6_setsockopt(struct sock *sk, int level, int optname,
+ char __user *optval, int optlen)
{
- if (level != SOL_UDP)
- return compat_ipv6_setsockopt(sk, level, optname,
- optval, optlen);
- return do_udpv6_setsockopt(sk, level, optname, optval, optlen);
+ if (level == SOL_UDP || level == SOL_UDPLITE)
+ return do_udpv6_setsockopt(sk, level, optname, optval, optlen);
+ return compat_ipv6_setsockopt(sk, level, optname, optval, optlen);
}
#endif
@@ -916,6 +945,14 @@
val = up->encap_type;
break;
+ case UDPLITE_SEND_CSCOV:
+ val = up->pcslen;
+ break;
+
+ case UDPLITE_RECV_CSCOV:
+ val = up->pcrlen;
+ break;
+
default:
return -ENOPROTOOPT;
};
@@ -927,22 +964,21 @@
return 0;
}
-static int udpv6_getsockopt(struct sock *sk, int level, int optname,
- char __user *optval, int __user *optlen)
+int udpv6_getsockopt(struct sock *sk, int level, int optname,
+ char __user *optval, int __user *optlen)
{
- if (level != SOL_UDP)
- return ipv6_getsockopt(sk, level, optname, optval, optlen);
- return do_udpv6_getsockopt(sk, level, optname, optval, optlen);
+ if (level == SOL_UDP || level == SOL_UDPLITE)
+ return do_udpv6_getsockopt(sk, level, optname, optval, optlen);
+ return ipv6_getsockopt(sk, level, optname, optval, optlen);
}
#ifdef CONFIG_COMPAT
-static int compat_udpv6_getsockopt(struct sock *sk, int level, int optname,
- char __user *optval, int __user *optlen)
+int compat_udpv6_getsockopt(struct sock *sk, int level, int optname,
+ char __user *optval, int __user *optlen)
{
- if (level != SOL_UDP)
- return compat_ipv6_getsockopt(sk, level, optname,
- optval, optlen);
- return do_udpv6_getsockopt(sk, level, optname, optval, optlen);
+ if (level == SOL_UDP || level == SOL_UDPLITE)
+ return do_udpv6_getsockopt(sk, level, optname, optval, optlen);
+ return compat_ipv6_getsockopt(sk, level, optname, optval, optlen);
}
#endif
@@ -983,7 +1019,7 @@
atomic_read(&sp->sk_refcnt), sp);
}
-static int udp6_seq_show(struct seq_file *seq, void *v)
+int udp6_seq_show(struct seq_file *seq, void *v)
{
if (v == SEQ_START_TOKEN)
seq_printf(seq,
@@ -1002,6 +1038,7 @@
.owner = THIS_MODULE,
.name = "udp6",
.family = AF_INET6,
+ .hashtable = udp_hash,
.seq_show = udp6_seq_show,
.seq_fops = &udp6_seq_fops,
};
@@ -1021,7 +1058,7 @@
struct proto udpv6_prot = {
.name = "UDPv6",
.owner = THIS_MODULE,
- .close = udpv6_close,
+ .close = udp_lib_close,
.connect = ip6_datagram_connect,
.disconnect = udp_disconnect,
.ioctl = udp_ioctl,
@@ -1031,8 +1068,8 @@
.sendmsg = udpv6_sendmsg,
.recvmsg = udpv6_recvmsg,
.backlog_rcv = udpv6_queue_rcv_skb,
- .hash = udp_v6_hash,
- .unhash = udp_v6_unhash,
+ .hash = udp_lib_hash,
+ .unhash = udp_lib_unhash,
.get_port = udp_v6_get_port,
.obj_size = sizeof(struct udp6_sock),
#ifdef CONFIG_COMPAT