From: Masahide NAKAMURA [EMAIL PROTECTED]
This is a support to search transformation states by its addresses
by using source address list for Mobile IPv6 usage.
To use it from user-space, it is also added a message type for
source address as a xfrm state option.
Based on MIPL2 kernel patch.
Signed-off-by: Masahide NAKAMURA [EMAIL PROTECTED]
Signed-off-by: YOSHIFUJI Hideaki [EMAIL PROTECTED]
---
include/linux/xfrm.h |1 +
include/net/xfrm.h |2 ++
net/ipv4/xfrm4_state.c |9 +++
net/ipv6/xfrm6_state.c | 21 +
net/xfrm/xfrm_state.c | 37 +++---
net/xfrm/xfrm_user.c | 59 +++-
6 files changed, 119 insertions(+), 10 deletions(-)
diff --git a/include/linux/xfrm.h b/include/linux/xfrm.h
index 5154064..66343d3 100644
--- a/include/linux/xfrm.h
+++ b/include/linux/xfrm.h
@@ -234,6 +234,7 @@ enum xfrm_attr_type_t {
XFRMA_REPLAY_VAL,
XFRMA_REPLAY_THRESH,
XFRMA_ETIMER_THRESH,
+ XFRMA_SRCADDR, /* xfrm_address_t */
__XFRMA_MAX
#define XFRMA_MAX (__XFRMA_MAX - 1)
diff --git a/include/net/xfrm.h b/include/net/xfrm.h
index 4933f46..bd51224 100644
--- a/include/net/xfrm.h
+++ b/include/net/xfrm.h
@@ -245,6 +245,7 @@ struct xfrm_state_afinfo {
struct xfrm_tmpl *tmpl,
xfrm_address_t *daddr,
xfrm_address_t *saddr);
struct xfrm_state *(*state_lookup)(xfrm_address_t *daddr, u32
spi, u8 proto);
+ struct xfrm_state *(*state_lookup_byaddr)(xfrm_address_t *daddr,
xfrm_address_t *saddr, u8 proto);
struct xfrm_state *(*find_acq)(u8 mode, u32 reqid, u8 proto,
xfrm_address_t *daddr,
xfrm_address_t *saddr,
int create);
@@ -937,6 +938,7 @@ extern void xfrm_state_insert(struct xfr
extern int xfrm_state_add(struct xfrm_state *x);
extern int xfrm_state_update(struct xfrm_state *x);
extern struct xfrm_state *xfrm_state_lookup(xfrm_address_t *daddr, u32 spi, u8
proto, unsigned short family);
+extern struct xfrm_state *xfrm_state_lookup_byaddr(xfrm_address_t *daddr,
xfrm_address_t *saddr, u8 proto, unsigned short family);
extern struct xfrm_state *xfrm_find_acq_byseq(u32 seq);
extern int xfrm_state_delete(struct xfrm_state *x);
extern void xfrm_state_flush(u8 proto);
diff --git a/net/ipv4/xfrm4_state.c b/net/ipv4/xfrm4_state.c
index c56b258..616be13 100644
--- a/net/ipv4/xfrm4_state.c
+++ b/net/ipv4/xfrm4_state.c
@@ -80,6 +80,14 @@ __xfrm4_state_lookup(xfrm_address_t *dad
return NULL;
}
+/* placeholder until ipv4's code is written */
+static struct xfrm_state *
+__xfrm4_state_lookup_byaddr(xfrm_address_t *daddr, xfrm_address_t *saddr,
+ u8 proto)
+{
+ return NULL;
+}
+
static struct xfrm_state *
__xfrm4_find_acq(u8 mode, u32 reqid, u8 proto,
xfrm_address_t *daddr, xfrm_address_t *saddr,
@@ -137,6 +145,7 @@ static struct xfrm_state_afinfo xfrm4_st
.init_flags = xfrm4_init_flags,
.init_tempsel = __xfrm4_init_tempsel,
.state_lookup = __xfrm4_state_lookup,
+ .state_lookup_byaddr= __xfrm4_state_lookup_byaddr,
.find_acq = __xfrm4_find_acq,
};
diff --git a/net/ipv6/xfrm6_state.c b/net/ipv6/xfrm6_state.c
index 2fb0785..9c95b9d 100644
--- a/net/ipv6/xfrm6_state.c
+++ b/net/ipv6/xfrm6_state.c
@@ -64,6 +64,26 @@ __xfrm6_init_tempsel(struct xfrm_state *
}
static struct xfrm_state *
+__xfrm6_state_lookup_byaddr(xfrm_address_t *daddr, xfrm_address_t *saddr,
+ u8 proto)
+{
+ struct xfrm_state *x = NULL;
+ unsigned h;
+
+ h = __xfrm6_src_hash(saddr);
+ list_for_each_entry(x, xfrm6_state_afinfo.state_bysrc+h, bysrc) {
+ if (x-props.family == AF_INET6
+ ipv6_addr_equal((struct in6_addr *)daddr, (struct in6_addr
*)x-id.daddr.a6)
+ ipv6_addr_equal((struct in6_addr *)saddr, (struct in6_addr
*)x-props.saddr.a6)
+ proto == x-id.proto) {
+ xfrm_state_hold(x);
+ return x;
+ }
+ }
+ return NULL;
+}
+
+static struct xfrm_state *
__xfrm6_state_lookup(xfrm_address_t *daddr, u32 spi, u8 proto)
{
unsigned h = __xfrm6_spi_hash(daddr, spi, proto);
@@ -140,6 +160,7 @@ static struct xfrm_state_afinfo xfrm6_st
.family = AF_INET6,
.init_tempsel = __xfrm6_init_tempsel,
.state_lookup = __xfrm6_state_lookup,
+ .state_lookup_byaddr= __xfrm6_state_lookup_byaddr,
.find_acq = __xfrm6_find_acq,
};
diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c
index 2a99928..11f480b 100644
--- a/net/xfrm/xfrm_state.c
+++
