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Diffstat (limited to 'net/ipv6/af_inet6.c')
-rw-r--r--net/ipv6/af_inet6.c142
1 files changed, 118 insertions, 24 deletions
diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
index c63b8ce0e1b..064ffab82a9 100644
--- a/net/ipv6/af_inet6.c
+++ b/net/ipv6/af_inet6.c
@@ -22,6 +22,7 @@
#include <linux/module.h>
+#include <linux/capability.h>
#include <linux/config.h>
#include <linux/errno.h>
#include <linux/types.h>
@@ -92,10 +93,13 @@ static int inet6_create(struct socket *sock, int protocol)
struct proto *answer_prot;
unsigned char answer_flags;
char answer_no_check;
- int rc;
+ int try_loading_module = 0;
+ int err;
/* Look for the requested type/protocol pair. */
answer = NULL;
+lookup_protocol:
+ err = -ESOCKTNOSUPPORT;
rcu_read_lock();
list_for_each_rcu(p, &inetsw6[sock->type]) {
answer = list_entry(p, struct inet_protosw, list);
@@ -113,21 +117,37 @@ static int inet6_create(struct socket *sock, int protocol)
if (IPPROTO_IP == answer->protocol)
break;
}
+ err = -EPROTONOSUPPORT;
answer = NULL;
}
- rc = -ESOCKTNOSUPPORT;
- if (!answer)
- goto out_rcu_unlock;
- rc = -EPERM;
+ if (!answer) {
+ if (try_loading_module < 2) {
+ rcu_read_unlock();
+ /*
+ * Be more specific, e.g. net-pf-10-proto-132-type-1
+ * (net-pf-PF_INET6-proto-IPPROTO_SCTP-type-SOCK_STREAM)
+ */
+ if (++try_loading_module == 1)
+ request_module("net-pf-%d-proto-%d-type-%d",
+ PF_INET6, protocol, sock->type);
+ /*
+ * Fall back to generic, e.g. net-pf-10-proto-132
+ * (net-pf-PF_INET6-proto-IPPROTO_SCTP)
+ */
+ else
+ request_module("net-pf-%d-proto-%d",
+ PF_INET6, protocol);
+ goto lookup_protocol;
+ } else
+ goto out_rcu_unlock;
+ }
+
+ err = -EPERM;
if (answer->capability > 0 && !capable(answer->capability))
goto out_rcu_unlock;
- rc = -EPROTONOSUPPORT;
- if (!protocol)
- goto out_rcu_unlock;
sock->ops = answer->ops;
-
answer_prot = answer->prot;
answer_no_check = answer->no_check;
answer_flags = answer->flags;
@@ -135,19 +155,20 @@ static int inet6_create(struct socket *sock, int protocol)
BUG_TRAP(answer_prot->slab != NULL);
- rc = -ENOBUFS;
+ err = -ENOBUFS;
sk = sk_alloc(PF_INET6, GFP_KERNEL, answer_prot, 1);
if (sk == NULL)
goto out;
sock_init_data(sock, sk);
- rc = 0;
+ err = 0;
sk->sk_no_check = answer_no_check;
if (INET_PROTOSW_REUSE & answer_flags)
sk->sk_reuse = 1;
inet = inet_sk(sk);
+ inet->is_icsk = INET_PROTOSW_ICSK & answer_flags;
if (SOCK_RAW == sock->type) {
inet->num = protocol;
@@ -202,14 +223,14 @@ static int inet6_create(struct socket *sock, int protocol)
sk->sk_prot->hash(sk);
}
if (sk->sk_prot->init) {
- rc = sk->sk_prot->init(sk);
- if (rc) {
+ err = sk->sk_prot->init(sk);
+ if (err) {
sk_common_release(sk);
goto out;
}
}
out:
- return rc;
+ return err;
out_rcu_unlock:
rcu_read_unlock();
goto out;
@@ -370,6 +391,8 @@ int inet6_destroy_sock(struct sock *sk)
return 0;
}
+EXPORT_SYMBOL_GPL(inet6_destroy_sock);
+
/*
* This does both peername and sockname.
*/
@@ -412,7 +435,6 @@ int inet6_getname(struct socket *sock, struct sockaddr *uaddr,
int inet6_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
{
struct sock *sk = sock->sk;
- int err = -EINVAL;
switch(cmd)
{
@@ -431,16 +453,15 @@ int inet6_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
case SIOCSIFDSTADDR:
return addrconf_set_dstaddr((void __user *) arg);
default:
- if (!sk->sk_prot->ioctl ||
- (err = sk->sk_prot->ioctl(sk, cmd, arg)) == -ENOIOCTLCMD)
- return(dev_ioctl(cmd,(void __user *) arg));
- return err;
+ if (!sk->sk_prot->ioctl)
+ return -ENOIOCTLCMD;
+ return sk->sk_prot->ioctl(sk, cmd, arg);
}
/*NOTREACHED*/
return(0);
}
-struct proto_ops inet6_stream_ops = {
+const struct proto_ops inet6_stream_ops = {
.family = PF_INET6,
.owner = THIS_MODULE,
.release = inet6_release,
@@ -461,7 +482,7 @@ struct proto_ops inet6_stream_ops = {
.sendpage = tcp_sendpage
};
-struct proto_ops inet6_dgram_ops = {
+const struct proto_ops inet6_dgram_ops = {
.family = PF_INET6,
.owner = THIS_MODULE,
.release = inet6_release,
@@ -489,7 +510,7 @@ static struct net_proto_family inet6_family_ops = {
};
/* Same as inet6_dgram_ops, sans udp_poll. */
-static struct proto_ops inet6_sockraw_ops = {
+static const struct proto_ops inet6_sockraw_ops = {
.family = PF_INET6,
.owner = THIS_MODULE,
.release = inet6_release,
@@ -590,17 +611,90 @@ inet6_unregister_protosw(struct inet_protosw *p)
}
}
+int inet6_sk_rebuild_header(struct sock *sk)
+{
+ int err;
+ struct dst_entry *dst;
+ struct ipv6_pinfo *np = inet6_sk(sk);
+
+ dst = __sk_dst_check(sk, np->dst_cookie);
+
+ if (dst == NULL) {
+ struct inet_sock *inet = inet_sk(sk);
+ struct in6_addr *final_p = NULL, final;
+ struct flowi fl;
+
+ memset(&fl, 0, sizeof(fl));
+ fl.proto = sk->sk_protocol;
+ ipv6_addr_copy(&fl.fl6_dst, &np->daddr);
+ ipv6_addr_copy(&fl.fl6_src, &np->saddr);
+ fl.fl6_flowlabel = np->flow_label;
+ fl.oif = sk->sk_bound_dev_if;
+ fl.fl_ip_dport = inet->dport;
+ fl.fl_ip_sport = inet->sport;
+
+ if (np->opt && np->opt->srcrt) {
+ struct rt0_hdr *rt0 = (struct rt0_hdr *) np->opt->srcrt;
+ ipv6_addr_copy(&final, &fl.fl6_dst);
+ ipv6_addr_copy(&fl.fl6_dst, rt0->addr);
+ final_p = &final;
+ }
+
+ err = ip6_dst_lookup(sk, &dst, &fl);
+ if (err) {
+ sk->sk_route_caps = 0;
+ return err;
+ }
+ if (final_p)
+ ipv6_addr_copy(&fl.fl6_dst, final_p);
+
+ if ((err = xfrm_lookup(&dst, &fl, sk, 0)) < 0) {
+ sk->sk_err_soft = -err;
+ return err;
+ }
+
+ ip6_dst_store(sk, dst, NULL);
+ sk->sk_route_caps = dst->dev->features &
+ ~(NETIF_F_IP_CSUM | NETIF_F_TSO);
+ }
+
+ return 0;
+}
+
+EXPORT_SYMBOL_GPL(inet6_sk_rebuild_header);
+
+int ipv6_opt_accepted(struct sock *sk, struct sk_buff *skb)
+{
+ struct ipv6_pinfo *np = inet6_sk(sk);
+ struct inet6_skb_parm *opt = IP6CB(skb);
+
+ if (np->rxopt.all) {
+ if ((opt->hop && (np->rxopt.bits.hopopts ||
+ np->rxopt.bits.ohopopts)) ||
+ ((IPV6_FLOWINFO_MASK & *(u32*)skb->nh.raw) &&
+ np->rxopt.bits.rxflow) ||
+ (opt->srcrt && (np->rxopt.bits.srcrt ||
+ np->rxopt.bits.osrcrt)) ||
+ ((opt->dst1 || opt->dst0) &&
+ (np->rxopt.bits.dstopts || np->rxopt.bits.odstopts)))
+ return 1;
+ }
+ return 0;
+}
+
+EXPORT_SYMBOL_GPL(ipv6_opt_accepted);
+
int
snmp6_mib_init(void *ptr[2], size_t mibsize, size_t mibalign)
{
if (ptr == NULL)
return -EINVAL;
- ptr[0] = __alloc_percpu(mibsize, mibalign);
+ ptr[0] = __alloc_percpu(mibsize);
if (!ptr[0])
goto err0;
- ptr[1] = __alloc_percpu(mibsize, mibalign);
+ ptr[1] = __alloc_percpu(mibsize);
if (!ptr[1])
goto err1;
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-26 03:36:06 +0000