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Date: Wed, 4 May 2016 16:36:33 +0900
From: Simon Horman <simon.horman@...ronome.com>
To: netdev@...r.kernel.org, dev@...nvswitch.org
Cc: Simon Horman <simon.horman@...ronome.com>
Subject: [PATCH v9 net-next 7/7] openvswitch: use ipgre tunnel rather than gretap tunnel
This allows GRE tunnels to send and receive both
layer 2 packets (packets with an ethernet header) and
layer 3 packets (packets without an ethernet header).
Signed-off-by: Simon Horman <simon.horman@...ronome.com>
---
v9
New Patch
---
include/net/gre.h | 4 ++--
net/ipv4/ip_gre.c | 8 ++++----
net/openvswitch/vport-gre.c | 4 ++--
net/openvswitch/vport-netdev.c | 12 +++++++++++-
net/openvswitch/vport-netdev.h | 1 +
5 files changed, 20 insertions(+), 9 deletions(-)
diff --git a/include/net/gre.h b/include/net/gre.h
index 29e37322c06e..181357d124b1 100644
--- a/include/net/gre.h
+++ b/include/net/gre.h
@@ -23,8 +23,8 @@ struct gre_protocol {
int gre_add_protocol(const struct gre_protocol *proto, u8 version);
int gre_del_protocol(const struct gre_protocol *proto, u8 version);
-struct net_device *gretap_fb_dev_create(struct net *net, const char *name,
- u8 name_assign_type);
+struct net_device *gre_fb_dev_create(struct net *net, const char *name,
+ u8 name_assign_type);
int gre_parse_header(struct sk_buff *skb, struct tnl_ptk_info *tpi,
bool *csum_err, int *hdr_len);
diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c
index 52011f78e3c7..d542812217d7 100644
--- a/net/ipv4/ip_gre.c
+++ b/net/ipv4/ip_gre.c
@@ -1114,8 +1114,8 @@ static struct rtnl_link_ops ipgre_tap_ops __read_mostly = {
.get_link_net = ip_tunnel_get_link_net,
};
-struct net_device *gretap_fb_dev_create(struct net *net, const char *name,
- u8 name_assign_type)
+struct net_device *gre_fb_dev_create(struct net *net, const char *name,
+ u8 name_assign_type)
{
struct nlattr *tb[IFLA_MAX + 1];
struct net_device *dev;
@@ -1125,7 +1125,7 @@ struct net_device *gretap_fb_dev_create(struct net *net, const char *name,
memset(&tb, 0, sizeof(tb));
dev = rtnl_create_link(net, name, name_assign_type,
- &ipgre_tap_ops, tb);
+ &ipgre_link_ops, tb);
if (IS_ERR(dev))
return dev;
@@ -1149,7 +1149,7 @@ out:
free_netdev(dev);
return ERR_PTR(err);
}
-EXPORT_SYMBOL_GPL(gretap_fb_dev_create);
+EXPORT_SYMBOL_GPL(gre_fb_dev_create);
static int __net_init ipgre_tap_init_net(struct net *net)
{
diff --git a/net/openvswitch/vport-gre.c b/net/openvswitch/vport-gre.c
index f003225de994..b1aa02904ae4 100644
--- a/net/openvswitch/vport-gre.c
+++ b/net/openvswitch/vport-gre.c
@@ -60,7 +60,7 @@ static struct vport *gre_tnl_create(const struct vport_parms *parms)
return vport;
rtnl_lock();
- dev = gretap_fb_dev_create(net, parms->name, NET_NAME_USER);
+ dev = gre_fb_dev_create(net, parms->name, NET_NAME_USER);
if (IS_ERR(dev)) {
rtnl_unlock();
ovs_vport_free(vport);
@@ -87,7 +87,7 @@ static struct vport *gre_create(const struct vport_parms *parms)
static struct vport_ops ovs_gre_vport_ops = {
.type = OVS_VPORT_TYPE_GRE,
.create = gre_create,
- .send = ovs_netdev_send_tap,
+ .send = ovs_netdev_send_raw_tun,
.destroy = ovs_netdev_tunnel_destroy,
};
diff --git a/net/openvswitch/vport-netdev.c b/net/openvswitch/vport-netdev.c
index 0e0b9286dd11..e6a2718204a8 100644
--- a/net/openvswitch/vport-netdev.c
+++ b/net/openvswitch/vport-netdev.c
@@ -99,7 +99,8 @@ struct vport *ovs_netdev_link(struct vport *vport, const char *name)
}
if (vport->dev->flags & IFF_LOOPBACK ||
- vport->dev->type != ARPHRD_ETHER ||
+ (vport->dev->type != ARPHRD_ETHER &&
+ vport->dev->type != ARPHRD_IPGRE) ||
ovs_is_internal_dev(vport->dev)) {
err = -EINVAL;
goto error_put;
@@ -207,6 +208,15 @@ int ovs_netdev_send_tap(struct sk_buff *skb)
}
EXPORT_SYMBOL_GPL(ovs_netdev_send_tap);
+int ovs_netdev_send_raw_tun(struct sk_buff *skb)
+{
+ if (skb->mac_len)
+ skb->protocol = ntohs(ETH_P_TEB);
+
+ return dev_queue_xmit(skb);
+}
+EXPORT_SYMBOL_GPL(ovs_netdev_send_raw_tun);
+
/* Returns null if this device is not attached to a datapath. */
struct vport *ovs_netdev_get_vport(struct net_device *dev)
{
diff --git a/net/openvswitch/vport-netdev.h b/net/openvswitch/vport-netdev.h
index 02f38a822334..ae59c02ba6a9 100644
--- a/net/openvswitch/vport-netdev.h
+++ b/net/openvswitch/vport-netdev.h
@@ -35,4 +35,5 @@ void ovs_netdev_exit(void);
void ovs_netdev_tunnel_destroy(struct vport *vport);
int ovs_netdev_send_tap(struct sk_buff *skb);
+int ovs_netdev_send_raw_tun(struct sk_buff *skb);
#endif /* vport_netdev.h */
--
2.7.0.rc3.207.g0ac5344
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