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| author | Fan Du <fan.du@windriver.com> | 2014-01-03 11:18:32 +0800 |
|---|---|---|
| committer | Steffen Klassert <steffen.klassert@secunet.com> | 2014-01-03 07:29:12 +0100 |
| commit | c454997e68eb013510ba128283ad3b4aefeff630 (patch) | |
| tree | c32cd7284c1e831c84aa962bced9fb0d816b5c51 /net/xfrm/xfrm_state.c | |
| parent | cf93d47ed4489cc349678f397290b3ecba868a3b (diff) | |
| download | linux-c454997e68eb013510ba128283ad3b4aefeff630.tar.bz2 | |
{pktgen, xfrm} Introduce xfrm_state_lookup_byspi for pktgen
Introduce xfrm_state_lookup_byspi to find user specified by custom
from "pgset spi xxx". Using this scheme, any flow regardless its
saddr/daddr could be transform by SA specified with configurable
spi.
Signed-off-by: Fan Du <fan.du@windriver.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Diffstat (limited to 'net/xfrm/xfrm_state.c')
| -rw-r--r-- | net/xfrm/xfrm_state.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c index 300744094ad8..62181486ead8 100644 --- a/net/xfrm/xfrm_state.c +++ b/net/xfrm/xfrm_state.c @@ -915,6 +915,28 @@ xfrm_stateonly_find(struct net *net, u32 mark, } EXPORT_SYMBOL(xfrm_stateonly_find); +struct xfrm_state *xfrm_state_lookup_byspi(struct net *net, __be32 spi, + unsigned short family) +{ + struct xfrm_state *x; + struct xfrm_state_walk *w; + + spin_lock_bh(&net->xfrm.xfrm_state_lock); + list_for_each_entry(w, &net->xfrm.state_all, all) { + x = container_of(w, struct xfrm_state, km); + if (x->props.family != family || + x->id.spi != spi) + continue; + + spin_unlock_bh(&net->xfrm.xfrm_state_lock); + xfrm_state_hold(x); + return x; + } + spin_unlock_bh(&net->xfrm.xfrm_state_lock); + return NULL; +} +EXPORT_SYMBOL(xfrm_state_lookup_byspi); + static void __xfrm_state_insert(struct xfrm_state *x) { struct net *net = xs_net(x); |