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dpif-netlink: Support rtnetlink port creation.

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In order to be able to add those tunnels, we need to add code to create
the tunnels and add them as NETDEV vports. And when there is no support
to create them, we need to fallback to compatibility code and add them
as tunnel vports.

When removing those tunnels, we need to remove the interfaces as well,
and detecting the right type might be important, at least to distinguish
the tunnel vports that we should remove and the interfaces that we
shouldn't.

Co-authored-by: Thadeu Lima de Souza Cascardo <cascardo@redhat.com>
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@redhat.com>
Signed-off-by: Eric Garver <e@erig.me>
Signed-off-by: Joe Stringer <joe@ovn.org>
This commit is contained in:
Eric Garver
2017-05-18 16:10:29 -04:00
committed by Joe Stringer
parent 20c57607b3
commit c4e087530e
5 changed files with 353 additions and 1 deletions
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29
lib/dpif-netlink.c
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@@ -34,6 +34,7 @@
#include "bitmap.h"
#include "dpif-provider.h"
#include "dpif-netlink-rtnl.h"
#include "openvswitch/dynamic-string.h"
#include "flow.h"
#include "fat-rwlock.h"
@@ -784,7 +785,7 @@ get_vport_type(const struct dpif_netlink_vport *vport)
return "unknown";
}
static enum ovs_vport_type
enum ovs_vport_type
netdev_to_ovs_vport_type(const char *type)
{
if (!strcmp(type, "tap") || !strcmp(type, "system")) {
@@ -947,8 +948,34 @@ dpif_netlink_port_add_compat(struct dpif_netlink *dpif, struct netdev *netdev,
}
static int OVS_UNUSED
dpif_netlink_rtnl_port_create_and_add(struct dpif_netlink *dpif,
struct netdev *netdev,
odp_port_t *port_nop)
OVS_REQ_WRLOCK(dpif->upcall_lock)
{
static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 20);
char namebuf[NETDEV_VPORT_NAME_BUFSIZE];
const char *name;
int error;
error = dpif_netlink_rtnl_port_create(netdev);
if (error) {
if (error != EOPNOTSUPP) {
VLOG_INFO_RL(&rl, "Failed to create %s with rtnetlink: %s",
netdev_get_name(netdev), ovs_strerror(error));
}
return error;
}
name = netdev_vport_get_dpif_port(netdev, namebuf, sizeof namebuf);
error = dpif_netlink_port_add__(dpif, name, OVS_VPORT_TYPE_NETDEV, NULL,
port_nop);
if (error) {
dpif_netlink_rtnl_port_destroy(name, netdev_get_type(netdev));
}
return error;
}
static int
dpif_netlink_port_add(struct dpif *dpif_, struct netdev *netdev,