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| author | Masahide NAKAMURA <nakam@linux-ipv6.org> | 2006-08-23 17:56:04 -0700 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2006-09-22 15:06:35 -0700 |
| commit | eb2971b68a7d17a7d0fa2c7fc6fbc4bfe41cd694 (patch) | |
| tree | 5f6e98ac376d0d2faa69e8a6644706a7312a1ff1 /net/ipv6/xfrm6_state.c | |
| parent | 6c44e6b7ab500d7e3e3f406c83325671be51a752 (diff) | |
| download | linux-eb2971b68a7d17a7d0fa2c7fc6fbc4bfe41cd694.tar.bz2 | |
[XFRM] STATE: Search by address using source address list.
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 <nakam@linux-ipv6.org>
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/xfrm6_state.c')
| -rw-r--r-- | net/ipv6/xfrm6_state.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/net/ipv6/xfrm6_state.c b/net/ipv6/xfrm6_state.c index 2fb07850449f..9c95b9d3e110 100644 --- a/net/ipv6/xfrm6_state.c +++ b/net/ipv6/xfrm6_state.c @@ -64,6 +64,26 @@ __xfrm6_init_tempsel(struct xfrm_state *x, struct flowi *fl, } 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_state_afinfo = { .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, }; |