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-rw-r--r--include/net/ipv6.h4
-rw-r--r--net/ipv6/af_inet6.c123
-rw-r--r--net/ipv6/ipv6_sockglue.c122
3 files changed, 123 insertions, 126 deletions
diff --git a/include/net/ipv6.h b/include/net/ipv6.h
index 96b1763bfcaa..5dc8164e5d3b 100644
--- a/include/net/ipv6.h
+++ b/include/net/ipv6.h
@@ -555,10 +555,6 @@ extern int compat_ipv6_getsockopt(struct sock *sk,
555 char __user *optval, 555 char __user *optval,
556 int __user *optlen); 556 int __user *optlen);
557 557
558extern int ipv6_packet_init(void);
559
560extern void ipv6_packet_cleanup(void);
561
562extern int ip6_datagram_connect(struct sock *sk, 558extern int ip6_datagram_connect(struct sock *sk,
563 struct sockaddr *addr, int addr_len); 559 struct sockaddr *addr, int addr_len);
564 560
diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
index 243c42a6b80d..73021d5baece 100644
--- a/net/ipv6/af_inet6.c
+++ b/net/ipv6/af_inet6.c
@@ -678,6 +678,129 @@ int ipv6_opt_accepted(struct sock *sk, struct sk_buff *skb)
678 678
679EXPORT_SYMBOL_GPL(ipv6_opt_accepted); 679EXPORT_SYMBOL_GPL(ipv6_opt_accepted);
680 680
681static struct inet6_protocol *ipv6_gso_pull_exthdrs(struct sk_buff *skb,
682 int proto)
683{
684 struct inet6_protocol *ops = NULL;
685
686 for (;;) {
687 struct ipv6_opt_hdr *opth;
688 int len;
689
690 if (proto != NEXTHDR_HOP) {
691 ops = rcu_dereference(inet6_protos[proto]);
692
693 if (unlikely(!ops))
694 break;
695
696 if (!(ops->flags & INET6_PROTO_GSO_EXTHDR))
697 break;
698 }
699
700 if (unlikely(!pskb_may_pull(skb, 8)))
701 break;
702
703 opth = (void *)skb->data;
704 len = ipv6_optlen(opth);
705
706 if (unlikely(!pskb_may_pull(skb, len)))
707 break;
708
709 proto = opth->nexthdr;
710 __skb_pull(skb, len);
711 }
712
713 return ops;
714}
715
716static int ipv6_gso_send_check(struct sk_buff *skb)
717{
718 struct ipv6hdr *ipv6h;
719 struct inet6_protocol *ops;
720 int err = -EINVAL;
721
722 if (unlikely(!pskb_may_pull(skb, sizeof(*ipv6h))))
723 goto out;
724
725 ipv6h = ipv6_hdr(skb);
726 __skb_pull(skb, sizeof(*ipv6h));
727 err = -EPROTONOSUPPORT;
728
729 rcu_read_lock();
730 ops = ipv6_gso_pull_exthdrs(skb, ipv6h->nexthdr);
731 if (likely(ops && ops->gso_send_check)) {
732 skb_reset_transport_header(skb);
733 err = ops->gso_send_check(skb);
734 }
735 rcu_read_unlock();
736
737out:
738 return err;
739}
740
741static struct sk_buff *ipv6_gso_segment(struct sk_buff *skb, int features)
742{
743 struct sk_buff *segs = ERR_PTR(-EINVAL);
744 struct ipv6hdr *ipv6h;
745 struct inet6_protocol *ops;
746
747 if (!(features & NETIF_F_V6_CSUM))
748 features &= ~NETIF_F_SG;
749
750 if (unlikely(skb_shinfo(skb)->gso_type &
751 ~(SKB_GSO_UDP |
752 SKB_GSO_DODGY |
753 SKB_GSO_TCP_ECN |
754 SKB_GSO_TCPV6 |
755 0)))
756 goto out;
757
758 if (unlikely(!pskb_may_pull(skb, sizeof(*ipv6h))))
759 goto out;
760
761 ipv6h = ipv6_hdr(skb);
762 __skb_pull(skb, sizeof(*ipv6h));
763 segs = ERR_PTR(-EPROTONOSUPPORT);
764
765 rcu_read_lock();
766 ops = ipv6_gso_pull_exthdrs(skb, ipv6h->nexthdr);
767 if (likely(ops && ops->gso_segment)) {
768 skb_reset_transport_header(skb);
769 segs = ops->gso_segment(skb, features);
770 }
771 rcu_read_unlock();
772
773 if (unlikely(IS_ERR(segs)))
774 goto out;
775
776 for (skb = segs; skb; skb = skb->next) {
777 ipv6h = ipv6_hdr(skb);
778 ipv6h->payload_len = htons(skb->len - skb->mac_len -
779 sizeof(*ipv6h));
780 }
781
782out:
783 return segs;
784}
785
786static struct packet_type ipv6_packet_type = {
787 .type = __constant_htons(ETH_P_IPV6),
788 .func = ipv6_rcv,
789 .gso_send_check = ipv6_gso_send_check,
790 .gso_segment = ipv6_gso_segment,
791};
792
793static int __init ipv6_packet_init(void)
794{
795 dev_add_pack(&ipv6_packet_type);
796 return 0;
797}
798
799static void ipv6_packet_cleanup(void)
800{
801 dev_remove_pack(&ipv6_packet_type);
802}
803
681static int __init init_ipv6_mibs(void) 804static int __init init_ipv6_mibs(void)
682{ 805{
683 if (snmp_mib_init((void **)ipv6_statistics, 806 if (snmp_mib_init((void **)ipv6_statistics,
diff --git a/net/ipv6/ipv6_sockglue.c b/net/ipv6/ipv6_sockglue.c
index 0a18fecb93d1..3bbfdff698d2 100644
--- a/net/ipv6/ipv6_sockglue.c
+++ b/net/ipv6/ipv6_sockglue.c
@@ -57,118 +57,6 @@
57 57
58DEFINE_SNMP_STAT(struct ipstats_mib, ipv6_statistics) __read_mostly; 58DEFINE_SNMP_STAT(struct ipstats_mib, ipv6_statistics) __read_mostly;
59 59
60static struct inet6_protocol *ipv6_gso_pull_exthdrs(struct sk_buff *skb,
61 int proto)
62{
63 struct inet6_protocol *ops = NULL;
64
65 for (;;) {
66 struct ipv6_opt_hdr *opth;
67 int len;
68
69 if (proto != NEXTHDR_HOP) {
70 ops = rcu_dereference(inet6_protos[proto]);
71
72 if (unlikely(!ops))
73 break;
74
75 if (!(ops->flags & INET6_PROTO_GSO_EXTHDR))
76 break;
77 }
78
79 if (unlikely(!pskb_may_pull(skb, 8)))
80 break;
81
82 opth = (void *)skb->data;
83 len = opth->hdrlen * 8 + 8;
84
85 if (unlikely(!pskb_may_pull(skb, len)))
86 break;
87
88 proto = opth->nexthdr;
89 __skb_pull(skb, len);
90 }
91
92 return ops;
93}
94
95static int ipv6_gso_send_check(struct sk_buff *skb)
96{
97 struct ipv6hdr *ipv6h;
98 struct inet6_protocol *ops;
99 int err = -EINVAL;
100
101 if (unlikely(!pskb_may_pull(skb, sizeof(*ipv6h))))
102 goto out;
103
104 ipv6h = ipv6_hdr(skb);
105 __skb_pull(skb, sizeof(*ipv6h));
106 err = -EPROTONOSUPPORT;
107
108 rcu_read_lock();
109 ops = ipv6_gso_pull_exthdrs(skb, ipv6h->nexthdr);
110 if (likely(ops && ops->gso_send_check)) {
111 skb_reset_transport_header(skb);
112 err = ops->gso_send_check(skb);
113 }
114 rcu_read_unlock();
115
116out:
117 return err;
118}
119
120static struct sk_buff *ipv6_gso_segment(struct sk_buff *skb, int features)
121{
122 struct sk_buff *segs = ERR_PTR(-EINVAL);
123 struct ipv6hdr *ipv6h;
124 struct inet6_protocol *ops;
125
126 if (!(features & NETIF_F_V6_CSUM))
127 features &= ~NETIF_F_SG;
128
129 if (unlikely(skb_shinfo(skb)->gso_type &
130 ~(SKB_GSO_UDP |
131 SKB_GSO_DODGY |
132 SKB_GSO_TCP_ECN |
133 SKB_GSO_TCPV6 |
134 0)))
135 goto out;
136
137 if (unlikely(!pskb_may_pull(skb, sizeof(*ipv6h))))
138 goto out;
139
140 ipv6h = ipv6_hdr(skb);
141 __skb_pull(skb, sizeof(*ipv6h));
142 segs = ERR_PTR(-EPROTONOSUPPORT);
143
144 rcu_read_lock();
145 ops = ipv6_gso_pull_exthdrs(skb, ipv6h->nexthdr);
146 if (likely(ops && ops->gso_segment)) {
147 skb_reset_transport_header(skb);
148 segs = ops->gso_segment(skb, features);
149 }
150 rcu_read_unlock();
151
152 if (unlikely(IS_ERR(segs)))
153 goto out;
154
155 for (skb = segs; skb; skb = skb->next) {
156 ipv6h = ipv6_hdr(skb);
157 ipv6h->payload_len = htons(skb->len - skb->mac_len -
158 sizeof(*ipv6h));
159 }
160
161out:
162 return segs;
163}
164
165static struct packet_type ipv6_packet_type = {
166 .type = __constant_htons(ETH_P_IPV6),
167 .func = ipv6_rcv,
168 .gso_send_check = ipv6_gso_send_check,
169 .gso_segment = ipv6_gso_segment,
170};
171
172struct ip6_ra_chain *ip6_ra_chain; 60struct ip6_ra_chain *ip6_ra_chain;
173DEFINE_RWLOCK(ip6_ra_lock); 61DEFINE_RWLOCK(ip6_ra_lock);
174 62
@@ -1132,13 +1020,3 @@ int compat_ipv6_getsockopt(struct sock *sk, int level, int optname,
1132EXPORT_SYMBOL(compat_ipv6_getsockopt); 1020EXPORT_SYMBOL(compat_ipv6_getsockopt);
1133#endif 1021#endif
1134 1022
1135int __init ipv6_packet_init(void)
1136{
1137 dev_add_pack(&ipv6_packet_type);
1138 return 0;
1139}
1140
1141void ipv6_packet_cleanup(void)
1142{
1143 dev_remove_pack(&ipv6_packet_type);
1144}