diff options
| author | Jamal Hadi Salim <hadi@cyberus.ca> | 2007-07-02 22:41:14 -0700 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2007-07-10 22:16:35 -0700 |
| commit | 628529b6ee334fedc8d25ce56205bb99566572b9 (patch) | |
| tree | 4545df6f7ecdec05c903bb2c11ba9fb4380ac71c /net/xfrm | |
| parent | 007a531b0a0c902392a3deff730acd28ce6625c7 (diff) | |
[XFRM] Introduce standalone SAD lookup
This allows other in-kernel functions to do SAD lookups.
The only known user at the moment is pktgen.
Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/xfrm')
| -rw-r--r-- | net/xfrm/xfrm_state.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c index dfacb9c2a6e..e070c3f938f 100644 --- a/net/xfrm/xfrm_state.c +++ b/net/xfrm/xfrm_state.c @@ -686,6 +686,37 @@ out: return x; } +struct xfrm_state * +xfrm_stateonly_find(xfrm_address_t *daddr, xfrm_address_t *saddr, + unsigned short family, u8 mode, u8 proto, u32 reqid) +{ + unsigned int h = xfrm_dst_hash(daddr, saddr, reqid, family); + struct xfrm_state *rx = NULL, *x = NULL; + struct hlist_node *entry; + + spin_lock(&xfrm_state_lock); + hlist_for_each_entry(x, entry, xfrm_state_bydst+h, bydst) { + if (x->props.family == family && + x->props.reqid == reqid && + !(x->props.flags & XFRM_STATE_WILDRECV) && + xfrm_state_addr_check(x, daddr, saddr, family) && + mode == x->props.mode && + proto == x->id.proto && + x->km.state == XFRM_STATE_VALID) { + rx = x; + break; + } + } + + if (rx) + xfrm_state_hold(rx); + spin_unlock(&xfrm_state_lock); + + + return rx; +} +EXPORT_SYMBOL(xfrm_stateonly_find); + static void __xfrm_state_insert(struct xfrm_state *x) { unsigned int h; |