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Date: Wed, 14 Jan 2015 13:10:35 +0800
From: Fan Du <fan.du@...el.com>
To: pshelar@...ira.com
Cc: netdev@...r.kernel.org, dev@...nvswitch.org,
fengyuleidian0615@...il.com
Subject: [PATCHv3 net-next] openvswitch: Introduce ovs_tunnel_route_lookup
Introduce ovs_tunnel_route_lookup to consolidate route lookup
shared by vxlan, gre, and geneve ports.
Signed-off-by: Fan Du <fan.du@...el.com>
---
Change log:
v3:
- Use ovs_tunnel_route_lookup for ovs_tunnel_get_egress_info
- Constantify tun_key structure for gre, vxlan, geneve ports
to surpress warnings.
v2:
- Use inline instead of function call
- Rename vport_route_lookup to ovs_tunnel_route_lookup
---
net/openvswitch/vport-geneve.c | 13 ++-----------
net/openvswitch/vport-gre.c | 12 ++----------
net/openvswitch/vport-vxlan.c | 12 ++----------
net/openvswitch/vport.c | 9 +--------
net/openvswitch/vport.h | 18 ++++++++++++++++++
5 files changed, 25 insertions(+), 39 deletions(-)
diff --git a/net/openvswitch/vport-geneve.c b/net/openvswitch/vport-geneve.c
index 484864d..eabe564 100644
--- a/net/openvswitch/vport-geneve.c
+++ b/net/openvswitch/vport-geneve.c
@@ -172,7 +172,7 @@ error:
static int geneve_tnl_send(struct vport *vport, struct sk_buff *skb)
{
- struct ovs_key_ipv4_tunnel *tun_key;
+ const struct ovs_key_ipv4_tunnel *tun_key;
struct ovs_tunnel_info *tun_info;
struct net *net = ovs_dp_get_net(vport->dp);
struct geneve_port *geneve_port = geneve_vport(vport);
@@ -191,16 +191,7 @@ static int geneve_tnl_send(struct vport *vport, struct sk_buff *skb)
}
tun_key = &tun_info->tunnel;
-
- /* Route lookup */
- memset(&fl, 0, sizeof(fl));
- fl.daddr = tun_key->ipv4_dst;
- fl.saddr = tun_key->ipv4_src;
- fl.flowi4_tos = RT_TOS(tun_key->ipv4_tos);
- fl.flowi4_mark = skb->mark;
- fl.flowi4_proto = IPPROTO_UDP;
-
- rt = ip_route_output_key(net, &fl);
+ rt = ovs_tunnel_route_lookup(net, tun_key, skb->mark, &fl, IPPROTO_UDP);
if (IS_ERR(rt)) {
err = PTR_ERR(rt);
goto error;
diff --git a/net/openvswitch/vport-gre.c b/net/openvswitch/vport-gre.c
index d4168c4..1aa4921 100644
--- a/net/openvswitch/vport-gre.c
+++ b/net/openvswitch/vport-gre.c
@@ -134,7 +134,7 @@ static int gre_err(struct sk_buff *skb, u32 info,
static int gre_tnl_send(struct vport *vport, struct sk_buff *skb)
{
struct net *net = ovs_dp_get_net(vport->dp);
- struct ovs_key_ipv4_tunnel *tun_key;
+ const struct ovs_key_ipv4_tunnel *tun_key;
struct flowi4 fl;
struct rtable *rt;
int min_headroom;
@@ -148,15 +148,7 @@ static int gre_tnl_send(struct vport *vport, struct sk_buff *skb)
}
tun_key = &OVS_CB(skb)->egress_tun_info->tunnel;
- /* Route lookup */
- memset(&fl, 0, sizeof(fl));
- fl.daddr = tun_key->ipv4_dst;
- fl.saddr = tun_key->ipv4_src;
- fl.flowi4_tos = RT_TOS(tun_key->ipv4_tos);
- fl.flowi4_mark = skb->mark;
- fl.flowi4_proto = IPPROTO_GRE;
-
- rt = ip_route_output_key(net, &fl);
+ rt = ovs_tunnel_route_lookup(net, tun_key, skb->mark, &fl, IPPROTO_GRE);
if (IS_ERR(rt)) {
err = PTR_ERR(rt);
goto err_free_skb;
diff --git a/net/openvswitch/vport-vxlan.c b/net/openvswitch/vport-vxlan.c
index d7c46b3..1435a05 100644
--- a/net/openvswitch/vport-vxlan.c
+++ b/net/openvswitch/vport-vxlan.c
@@ -145,7 +145,7 @@ static int vxlan_tnl_send(struct vport *vport, struct sk_buff *skb)
struct net *net = ovs_dp_get_net(vport->dp);
struct vxlan_port *vxlan_port = vxlan_vport(vport);
__be16 dst_port = inet_sk(vxlan_port->vs->sock->sk)->inet_sport;
- struct ovs_key_ipv4_tunnel *tun_key;
+ const struct ovs_key_ipv4_tunnel *tun_key;
struct rtable *rt;
struct flowi4 fl;
__be16 src_port;
@@ -158,15 +158,7 @@ static int vxlan_tnl_send(struct vport *vport, struct sk_buff *skb)
}
tun_key = &OVS_CB(skb)->egress_tun_info->tunnel;
- /* Route lookup */
- memset(&fl, 0, sizeof(fl));
- fl.daddr = tun_key->ipv4_dst;
- fl.saddr = tun_key->ipv4_src;
- fl.flowi4_tos = RT_TOS(tun_key->ipv4_tos);
- fl.flowi4_mark = skb->mark;
- fl.flowi4_proto = IPPROTO_UDP;
-
- rt = ip_route_output_key(net, &fl);
+ rt = ovs_tunnel_route_lookup(net, tun_key, skb->mark, &fl, IPPROTO_UDP);
if (IS_ERR(rt)) {
err = PTR_ERR(rt);
goto error;
diff --git a/net/openvswitch/vport.c b/net/openvswitch/vport.c
index 2034c6d..fb9d5fb 100644
--- a/net/openvswitch/vport.c
+++ b/net/openvswitch/vport.c
@@ -594,14 +594,7 @@ int ovs_tunnel_get_egress_info(struct ovs_tunnel_info *egress_tun_info,
* The process may need to be changed if the corresponding process
* in vports ops changed.
*/
- memset(&fl, 0, sizeof(fl));
- fl.daddr = tun_key->ipv4_dst;
- fl.saddr = tun_key->ipv4_src;
- fl.flowi4_tos = RT_TOS(tun_key->ipv4_tos);
- fl.flowi4_mark = skb_mark;
- fl.flowi4_proto = ipproto;
-
- rt = ip_route_output_key(net, &fl);
+ rt = ovs_tunnel_route_lookup(net, tun_key, skb_mark, &fl, ipproto);
if (IS_ERR(rt))
return PTR_ERR(rt);
diff --git a/net/openvswitch/vport.h b/net/openvswitch/vport.h
index 99c8e71..f8ae295 100644
--- a/net/openvswitch/vport.h
+++ b/net/openvswitch/vport.h
@@ -236,4 +236,22 @@ static inline void ovs_skb_postpush_rcsum(struct sk_buff *skb,
int ovs_vport_ops_register(struct vport_ops *ops);
void ovs_vport_ops_unregister(struct vport_ops *ops);
+static inline struct rtable *ovs_tunnel_route_lookup(struct net *net,
+ const struct ovs_key_ipv4_tunnel *key,
+ u32 mark,
+ struct flowi4 *fl,
+ u8 protocol)
+{
+ struct rtable *rt;
+
+ memset(fl, 0, sizeof(*fl));
+ fl->daddr = key->ipv4_dst;
+ fl->saddr = key->ipv4_src;
+ fl->flowi4_tos = RT_TOS(key->ipv4_tos);
+ fl->flowi4_mark = mark;
+ fl->flowi4_proto = protocol;
+
+ rt = ip_route_output_key(net, fl);
+ return rt;
+}
#endif /* vport.h */
--
1.7.1
--
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