diff options
| author |   Mohammed Hawari <mohammed@hawari.fr> | 2024-10-30 19:17:07 +0100 |
|---|---|---|
| committer |   Florin Coras <florin.coras@gmail.com> | 2024-10-31 19:47:58 +0000 |
| commit | bd32d6234cad2af5bc220c6976aa84a758131427 (patch) | |
| tree | e992d9597bec3891a45902bc85f529be74e381e4 /src/vnet/devices/tap/tap.c | |
| parent | bfad6b7a8f0a88531923e39f50b70cb5be6d52d7 (diff) | |
virtio: introduce the consistent-qp feature
In certain usecases related to Linux legacy pinning of flows on queue
pairs, it is desirable that, for a given index, the rx and tx virtio
queue be handled by the same worker. This change introduces a flag for
virtio and tap interfaces that allow such a mapping.
Example with two workers rxq 0 and txq 0 on worker 0
rxq 1 and txq 1 on worker 1
txq 2 on main thread
Change-Id: I1b74a4788843fd1d0e8dcb4e9da30e609e088fe3
Signed-off-by: Mohammed Hawari <mohammed@hawari.fr>
Type: improvement
Diffstat (limited to 'src/vnet/devices/tap/tap.c')
| -rw-r--r-- | src/vnet/devices/tap/tap.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/vnet/devices/tap/tap.c b/src/vnet/devices/tap/tap.c index b0b0a3af13f..bb91200a525 100644 --- a/src/vnet/devices/tap/tap.c +++ b/src/vnet/devices/tap/tap.c @@ -212,6 +212,9 @@ tap_create_if (vlib_main_t * vm, tap_create_if_args_t * args) } } + if (args->tap_flags & TAP_FLAG_CONSISTENT_QP) + vif->consistent_qp = 1; + /* if namespace is specified, all further netlink messages should be executed * after we change our net namespace */ if (args->host_namespace) |