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path: root/net/ipv6/ipv6_sockglue.c
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Diffstat (limited to 'net/ipv6/ipv6_sockglue.c')
-rw-r--r--net/ipv6/ipv6_sockglue.c207
1 files changed, 81 insertions, 126 deletions
diff --git a/net/ipv6/ipv6_sockglue.c b/net/ipv6/ipv6_sockglue.c
index bf2a686aa13..d3d93d752e1 100644
--- a/net/ipv6/ipv6_sockglue.c
+++ b/net/ipv6/ipv6_sockglue.c
@@ -57,118 +57,6 @@
DEFINE_SNMP_STAT(struct ipstats_mib, ipv6_statistics) __read_mostly;
-static struct inet6_protocol *ipv6_gso_pull_exthdrs(struct sk_buff *skb,
- int proto)
-{
- struct inet6_protocol *ops = NULL;
-
- for (;;) {
- struct ipv6_opt_hdr *opth;
- int len;
-
- if (proto != NEXTHDR_HOP) {
- ops = rcu_dereference(inet6_protos[proto]);
-
- if (unlikely(!ops))
- break;
-
- if (!(ops->flags & INET6_PROTO_GSO_EXTHDR))
- break;
- }
-
- if (unlikely(!pskb_may_pull(skb, 8)))
- break;
-
- opth = (void *)skb->data;
- len = opth->hdrlen * 8 + 8;
-
- if (unlikely(!pskb_may_pull(skb, len)))
- break;
-
- proto = opth->nexthdr;
- __skb_pull(skb, len);
- }
-
- return ops;
-}
-
-static int ipv6_gso_send_check(struct sk_buff *skb)
-{
- struct ipv6hdr *ipv6h;
- struct inet6_protocol *ops;
- int err = -EINVAL;
-
- if (unlikely(!pskb_may_pull(skb, sizeof(*ipv6h))))
- goto out;
-
- ipv6h = ipv6_hdr(skb);
- __skb_pull(skb, sizeof(*ipv6h));
- err = -EPROTONOSUPPORT;
-
- rcu_read_lock();
- ops = ipv6_gso_pull_exthdrs(skb, ipv6h->nexthdr);
- if (likely(ops && ops->gso_send_check)) {
- skb_reset_transport_header(skb);
- err = ops->gso_send_check(skb);
- }
- rcu_read_unlock();
-
-out:
- return err;
-}
-
-static struct sk_buff *ipv6_gso_segment(struct sk_buff *skb, int features)
-{
- struct sk_buff *segs = ERR_PTR(-EINVAL);
- struct ipv6hdr *ipv6h;
- struct inet6_protocol *ops;
-
- if (!(features & NETIF_F_V6_CSUM))
- features &= ~NETIF_F_SG;
-
- if (unlikely(skb_shinfo(skb)->gso_type &
- ~(SKB_GSO_UDP |
- SKB_GSO_DODGY |
- SKB_GSO_TCP_ECN |
- SKB_GSO_TCPV6 |
- 0)))
- goto out;
-
- if (unlikely(!pskb_may_pull(skb, sizeof(*ipv6h))))
- goto out;
-
- ipv6h = ipv6_hdr(skb);
- __skb_pull(skb, sizeof(*ipv6h));
- segs = ERR_PTR(-EPROTONOSUPPORT);
-
- rcu_read_lock();
- ops = ipv6_gso_pull_exthdrs(skb, ipv6h->nexthdr);
- if (likely(ops && ops->gso_segment)) {
- skb_reset_transport_header(skb);
- segs = ops->gso_segment(skb, features);
- }
- rcu_read_unlock();
-
- if (unlikely(IS_ERR(segs)))
- goto out;
-
- for (skb = segs; skb; skb = skb->next) {
- ipv6h = ipv6_hdr(skb);
- ipv6h->payload_len = htons(skb->len - skb->mac_len -
- sizeof(*ipv6h));
- }
-
-out:
- return segs;
-}
-
-static struct packet_type ipv6_packet_type = {
- .type = __constant_htons(ETH_P_IPV6),
- .func = ipv6_rcv,
- .gso_send_check = ipv6_gso_send_check,
- .gso_segment = ipv6_gso_segment,
-};
-
struct ip6_ra_chain *ip6_ra_chain;
DEFINE_RWLOCK(ip6_ra_lock);
@@ -219,6 +107,7 @@ static int do_ipv6_setsockopt(struct sock *sk, int level, int optname,
char __user *optval, int optlen)
{
struct ipv6_pinfo *np = inet6_sk(sk);
+ struct net *net = sock_net(sk);
int val, valbool;
int retv = -ENOPROTOOPT;
@@ -544,7 +433,7 @@ done:
if (sk->sk_bound_dev_if && sk->sk_bound_dev_if != val)
goto e_inval;
- if (__dev_get_by_index(&init_net, val) == NULL) {
+ if (__dev_get_by_index(net, val) == NULL) {
retv = -ENODEV;
break;
}
@@ -728,7 +617,67 @@ done:
retv = xfrm_user_policy(sk, optname, optval, optlen);
break;
+ case IPV6_ADDR_PREFERENCES:
+ {
+ unsigned int pref = 0;
+ unsigned int prefmask = ~0;
+
+ retv = -EINVAL;
+
+ /* check PUBLIC/TMP/PUBTMP_DEFAULT conflicts */
+ switch (val & (IPV6_PREFER_SRC_PUBLIC|
+ IPV6_PREFER_SRC_TMP|
+ IPV6_PREFER_SRC_PUBTMP_DEFAULT)) {
+ case IPV6_PREFER_SRC_PUBLIC:
+ pref |= IPV6_PREFER_SRC_PUBLIC;
+ break;
+ case IPV6_PREFER_SRC_TMP:
+ pref |= IPV6_PREFER_SRC_TMP;
+ break;
+ case IPV6_PREFER_SRC_PUBTMP_DEFAULT:
+ break;
+ case 0:
+ goto pref_skip_pubtmp;
+ default:
+ goto e_inval;
+ }
+
+ prefmask &= ~(IPV6_PREFER_SRC_PUBLIC|
+ IPV6_PREFER_SRC_TMP);
+pref_skip_pubtmp:
+
+ /* check HOME/COA conflicts */
+ switch (val & (IPV6_PREFER_SRC_HOME|IPV6_PREFER_SRC_COA)) {
+ case IPV6_PREFER_SRC_HOME:
+ break;
+ case IPV6_PREFER_SRC_COA:
+ pref |= IPV6_PREFER_SRC_COA;
+ case 0:
+ goto pref_skip_coa;
+ default:
+ goto e_inval;
+ }
+
+ prefmask &= ~IPV6_PREFER_SRC_COA;
+pref_skip_coa:
+
+ /* check CGA/NONCGA conflicts */
+ switch (val & (IPV6_PREFER_SRC_CGA|IPV6_PREFER_SRC_NONCGA)) {
+ case IPV6_PREFER_SRC_CGA:
+ case IPV6_PREFER_SRC_NONCGA:
+ case 0:
+ break;
+ default:
+ goto e_inval;
+ }
+
+ np->srcprefs = (np->srcprefs & prefmask) | pref;
+ retv = 0;
+
+ break;
+ }
}
+
release_sock(sk);
return retv;
@@ -1015,9 +964,7 @@ static int do_ipv6_getsockopt(struct sock *sk, int level, int optname,
dst = sk_dst_get(sk);
if (dst) {
if (val < 0)
- val = dst_metric(dst, RTAX_HOPLIMIT);
- if (val < 0)
- val = ipv6_get_hoplimit(dst->dev);
+ val = ip6_dst_hoplimit(dst);
dst_release(dst);
}
if (val < 0)
@@ -1045,6 +992,24 @@ static int do_ipv6_getsockopt(struct sock *sk, int level, int optname,
val = np->sndflow;
break;
+ case IPV6_ADDR_PREFERENCES:
+ val = 0;
+
+ if (np->srcprefs & IPV6_PREFER_SRC_TMP)
+ val |= IPV6_PREFER_SRC_TMP;
+ else if (np->srcprefs & IPV6_PREFER_SRC_PUBLIC)
+ val |= IPV6_PREFER_SRC_PUBLIC;
+ else {
+ /* XXX: should we return system default? */
+ val |= IPV6_PREFER_SRC_PUBTMP_DEFAULT;
+ }
+
+ if (np->srcprefs & IPV6_PREFER_SRC_COA)
+ val |= IPV6_PREFER_SRC_COA;
+ else
+ val |= IPV6_PREFER_SRC_HOME;
+ break;
+
default:
return -ENOPROTOOPT;
}
@@ -1128,13 +1093,3 @@ int compat_ipv6_getsockopt(struct sock *sk, int level, int optname,
EXPORT_SYMBOL(compat_ipv6_getsockopt);
#endif
-int __init ipv6_packet_init(void)
-{
- dev_add_pack(&ipv6_packet_type);
- return 0;
-}
-
-void ipv6_packet_cleanup(void)
-{
- dev_remove_pack(&ipv6_packet_type);
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-22 14:05:54 +0000