diff options
| author |   Matthew Smith <mgsmith@netgate.com> | 2020-07-24 13:38:03 -0500 |
|---|---|---|
| committer | Matthew Smith <mgsmith@netgate.com> | 2020-11-05 17:41:01 +0000 |
| commit | bd50ed18de83493b119e67897a5fa9ba9c7e763e (patch) | |
| tree | 6cce31f5795f25c34bf7badfbfec5152a3d67ca0 /src/vnet/devices/virtio | |
| parent | d4a547144ffc0f68538d5a89ce7d41cd739a33d2 (diff) | |
tap: allow change of carrier state on host
Type: feature
Add a function to adjust the link state of the host side of a tap
interface. If an application (e.g. route protocol daemons) running on
the host uses netlink to monitor interface state, a plugin
could use this function to communicate a loss of connectivity
to the application by making the interface appear to go down.
Requires a somewhat recent kernel. E.g. it does not have any effect
on CentOS 7 but it works on CentOS 8.
Change-Id: I677ee7889d2eb142e2395bea98f0b4d7e7e7f810
Signed-off-by: Matthew Smith <mgsmith@netgate.com>
Diffstat (limited to 'src/vnet/devices/virtio')
| -rw-r--r-- | src/vnet/devices/virtio/virtio.c | 1 | ||||
| -rw-r--r-- | src/vnet/devices/virtio/virtio.h | 1 |
2 files changed, 2 insertions, 0 deletions
diff --git a/src/vnet/devices/virtio/virtio.c b/src/vnet/devices/virtio/virtio.c index 8209a46b52f..925ad092b91 100644 --- a/src/vnet/devices/virtio/virtio.c +++ b/src/vnet/devices/virtio/virtio.c @@ -345,6 +345,7 @@ virtio_show (vlib_main_t * vm, u32 * hw_if_indices, u8 show_descr, u32 type) if (type == VIRTIO_IF_TYPE_TAP) vlib_cli_output (vm, " host-mac-addr: %U", format_ethernet_address, vif->host_mac_addr); + vlib_cli_output (vm, " host-carrier-up: %u", vif->host_carrier_up); vec_foreach_index (i, vif->vhost_fds) str = format (str, " %d", vif->vhost_fds[i]); diff --git a/src/vnet/devices/virtio/virtio.h b/src/vnet/devices/virtio/virtio.h index 86660a1f933..fda72365db9 100644 --- a/src/vnet/devices/virtio/virtio.h +++ b/src/vnet/devices/virtio/virtio.h @@ -169,6 +169,7 @@ typedef struct ip4_address_t host_ip4_addr; u8 host_ip4_prefix_len; u8 host_ip6_prefix_len; + u8 host_carrier_up; /* host tun/tap driver link carrier state */ }; struct /* native virtio */ { |