[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <1387506814-4417-7-git-send-email-fan.du@windriver.com>
Date: Fri, 20 Dec 2013 10:33:32 +0800
From: Fan Du <fan.du@...driver.com>
To: <davem@...emloft.net>
CC: <steffen.klassert@...unet.com>, <hadi@...erus.ca>,
<netdev@...r.kernel.org>
Subject: [PATCHv4 net-next 6/8] {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@...driver.com>
---
include/net/xfrm.h | 2 ++
net/core/pktgen.c | 22 +++++++++++++++-------
net/xfrm/xfrm_state.c | 22 ++++++++++++++++++++++
3 files changed, 39 insertions(+), 7 deletions(-)
diff --git a/include/net/xfrm.h b/include/net/xfrm.h
index 6b82fdf..dfdfead 100644
--- a/include/net/xfrm.h
+++ b/include/net/xfrm.h
@@ -1422,6 +1422,8 @@ struct xfrm_state *xfrm_stateonly_find(struct net *net, u32 mark,
xfrm_address_t *saddr,
unsigned short family,
u8 mode, u8 proto, u32 reqid);
+struct xfrm_state *xfrm_state_lookup_byspi(struct net *net, __be32 spi,
+ unsigned short family);
int xfrm_state_check_expire(struct xfrm_state *x);
void xfrm_state_insert(struct xfrm_state *x);
int xfrm_state_add(struct xfrm_state *x);
diff --git a/net/core/pktgen.c b/net/core/pktgen.c
index 628f7c5..b553c36 100644
--- a/net/core/pktgen.c
+++ b/net/core/pktgen.c
@@ -2247,13 +2247,21 @@ static void get_ipsec_sa(struct pktgen_dev *pkt_dev, int flow)
struct xfrm_state *x = pkt_dev->flows[flow].x;
struct pktgen_net *pn = net_generic(dev_net(pkt_dev->odev), pg_net_id);
if (!x) {
- /*slow path: we dont already have xfrm_state*/
- x = xfrm_stateonly_find(pn->net, DUMMY_MARK,
- (xfrm_address_t *)&pkt_dev->cur_daddr,
- (xfrm_address_t *)&pkt_dev->cur_saddr,
- AF_INET,
- pkt_dev->ipsmode,
- pkt_dev->ipsproto, 0);
+
+ if (pkt_dev->spi) {
+ /* We need as quick as possible to find the right SA
+ * Searching with minimum criteria to archieve this.
+ */
+ x = xfrm_state_lookup_byspi(pn->net, htonl(pkt_dev->spi), AF_INET);
+ } else {
+ /* slow path: we dont already have xfrm_state */
+ x = xfrm_stateonly_find(pn->net, DUMMY_MARK,
+ (xfrm_address_t *)&pkt_dev->cur_daddr,
+ (xfrm_address_t *)&pkt_dev->cur_saddr,
+ AF_INET,
+ pkt_dev->ipsmode,
+ pkt_dev->ipsproto, 0);
+ }
if (x) {
pkt_dev->flows[flow].x = x;
set_pkt_overhead(pkt_dev);
diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c
index f7cb4a3..d31a126 100644
--- a/net/xfrm/xfrm_state.c
+++ b/net/xfrm/xfrm_state.c
@@ -925,6 +925,28 @@ 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(&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(&xfrm_state_lock);
+ xfrm_state_hold(x);
+ return x;
+ }
+ spin_unlock_bh(&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);
--
1.7.9.5
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Powered by blists - more mailing lists