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STATE: Common receive function for route optimization extension headers.

PATCH In review Masahide NAKAMURA 1 participant 1 message Jul 29, 2006

Subsystems (4)
Networking Network drivers IPv4/IPv6 Networking IPsec
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Masahide NAKAMURA

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PATCH 11/23 STATE: Common receive function for route optimization extension headers.

XFRM_STATE_WILDRECV flag is introduced; the last resort state is set it and receives packet which is not route optimized but uses such extension headers i.e. Mobile IPv6 signaling (binding update and acknowledgement). A node enabled Mobile IPv6 adds the state.
Based on MIPL2 kernel patch.

---
 include/linux/xfrm.h   |    1 
 include/net/xfrm.h     |   10 ++++
 net/ipv6/ipv6_syms.c   |    3 +
 net/ipv6/xfrm6_input.c |  112 ++++++++++++++++++++++++++++++++++++++++++++++++
 net/xfrm/xfrm_state.c  |    3 +
 5 files changed, 129 insertions(+), 0 deletions(-)
include/linux/xfrm.h +1 -0
index 55d1ce4..47e39f6 100644
@@ -256,6 +256,7 @@ struct xfrm_usersa_info {
 #define XFRM_STATE_NOECN	1
 #define XFRM_STATE_DECAP_DSCP	2
 #define XFRM_STATE_NOPMTUDISC	4
+#define XFRM_STATE_WILDRECV	8
 };
 
 struct xfrm_usersa_id {
include/net/xfrm.h +10 -0
index 8dcf6cd..f551bc6 100644
@@ -964,6 +964,16 @@ extern int xfrm4_tunnel_register(struct 
 extern int xfrm4_tunnel_deregister(struct xfrm_tunnel *handler);
 extern int xfrm6_rcv_spi(struct sk_buff *skb, u32 spi);
 extern int xfrm6_rcv(struct sk_buff **pskb);
+#ifdef CONFIG_XFRM_ADVANCED
+extern int __xfrm6_rcv_one(struct sk_buff *skb, xfrm_address_t *daddr,
+			   xfrm_address_t *saddr, u8 proto);
+#else
+static inline int __xfrm6_rcv_one(struct sk_buff *skb, xfrm_address_t *daddr,
+				  xfrm_address_t *saddr, u8 proto)
+{
+	return -ENOSYS;
+}
+#endif
 extern int xfrm6_tunnel_register(struct xfrm6_tunnel *handler);
 extern int xfrm6_tunnel_deregister(struct xfrm6_tunnel *handler);
 extern u32 xfrm6_tunnel_alloc_spi(xfrm_address_t *saddr);
net/ipv6/ipv6_syms.c +3 -0
index 1648278..e8b8a5e 100644
@@ -32,6 +32,9 @@ EXPORT_SYMBOL(ipv6_chk_addr);
 EXPORT_SYMBOL(in6_dev_finish_destroy);
 #ifdef CONFIG_XFRM
 EXPORT_SYMBOL(xfrm6_rcv);
+#ifdef CONFIG_XFRM_ADVANCED
+EXPORT_SYMBOL(__xfrm6_rcv_one);
+#endif
 #endif
 EXPORT_SYMBOL(rt6_lookup);
 EXPORT_SYMBOL(ipv6_push_nfrag_opts);
net/ipv6/xfrm6_input.c +112 -0

115 lines not on this page · raw message

net/xfrm/xfrm_state.c +3 -0
index 1eedb85..60def7a 100644
@@ -357,6 +357,9 @@ xfrm_state_find(xfrm_address_t *daddr, x
 	list_for_each_entry(x, xfrm_state_bydst+h, bydst) {
 		if (x->props.family == family &&
 		    x->props.reqid == tmpl->reqid &&
+#ifdef CONFIG_XFRM_ADVANCED
+		    (x->props.flags & XFRM_STATE_WILDRECV) == 0 &&
+#endif
 		    xfrm_state_addr_check(x, daddr, saddr, family) &&
 		    tmpl->mode == x->props.mode &&
 		    tmpl->id.proto == x->id.proto &&
Signature · 1 line
1.4.1