On 10/09/2021 05:23, Rongwei Liu wrote:
> Previously, we set txq affinity to 0 and let firmware
> to perform round-robin when bonding. Firmware uses a
> global counter to assign txq affinity to different
> physical ports accord to remainder after division.
>
> There are three dis-advantages:
> 1. The global counter is shared between kernel and dpdk.
> 2. After restarting pmd or port, the previous counter value
> is reused, so the new affinity is unpredictable.
> 3. There is no way to get what affinity is set by firmware.
>
> In this update, we will create several TISs up to the
> number of bonding ports and bind each TIS to one PF port.
>
> For each port, it will start to pick up TIS using its port
> index. Upper layer application can quickly calculate each txq's
> affinity without querying.
>
> At DPDK layer, when creating txq with 2 bonding ports, the
> affinity is set like:
> port 0: 1-->2-->1-->2
> port 1: 2-->1-->2-->1
> port 2: 1-->2-->1-->2
>
> Note: Only applicable to Devx api.
>
> Signed-off-by: Jiawei Wang <jiaw...@nvidia.com>
> Signed-off-by: Rongwei Liu <rongw...@nvidia.com>
> ---
> drivers/common/mlx5/mlx5_devx_cmds.c | 38 ++++++++++++++++++++++
> drivers/common/mlx5/mlx5_devx_cmds.h | 12 +++++++
> drivers/common/mlx5/mlx5_prm.h | 26 +++++++++++++++
> drivers/common/mlx5/version.map | 1 +
> drivers/net/mlx5/linux/mlx5_os.c | 37 ++++++++++++++++++++++
> drivers/net/mlx5/mlx5.c | 17 +++-------
> drivers/net/mlx5/mlx5.h | 8 ++++-
> drivers/net/mlx5/mlx5_devx.c | 47 ++++++++++++++++++++++++++--
> drivers/net/mlx5/mlx5_tx.h | 1 +
> drivers/net/mlx5/mlx5_txpp.c | 4 +--
> 10 files changed, 174 insertions(+), 17 deletions(-)
>
Acked-by: Ray Kinsella <m...@ashroe.eu>
