On 4/18/2016 3:42 PM, Or Gerlitz wrote:
> On Mon, Apr 18, 2016 at 7:25 PM, Majd Dibbiny <majd@xxxxxxxxxxxx> wrote:
>> From: Bodong Wang <bodong@xxxxxxxxxxxx>
>>
>> mlx5 based hardware supports LSO for Raw Ethernet QPs.
>> LSO (large segment offload) applied here is mainly used
>> for TCP (also known as TSO).
>>
>> Signed-off-by: Bodong Wang <bodong@xxxxxxxxxxxx>
>> Signed-off-by: Majd Dibbiny <majd@xxxxxxxxxxxx>
>> Signed-off-by: Matan Barak <matanb@xxxxxxxxxxxx>
>> ---
>> drivers/infiniband/hw/mlx5/main.c | 13 +++++++++++--
>> 1 file changed, 11 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c
>> index 5acf346..09502ad 100644
>> --- a/drivers/infiniband/hw/mlx5/main.c
>> +++ b/drivers/infiniband/hw/mlx5/main.c
>> @@ -454,6 +454,7 @@ static int mlx5_ib_query_device(struct ib_device *ibdev,
>> int max_rq_sg;
>> int max_sq_sg;
>> u64 min_page_size = 1ull << MLX5_CAP_GEN(mdev, log_pg_sz);
>> + u64 max_lso;
>>
>> if (uhw->inlen || uhw->outlen)
>> return -EINVAL;
>> @@ -508,10 +509,18 @@ static int mlx5_ib_query_device(struct ib_device *ibdev,
>> if (MLX5_CAP_GEN(mdev, block_lb_mc))
>> props->device_cap_flags |= IB_DEVICE_BLOCK_MULTICAST_LOOPBACK;
>>
>> - if (MLX5_CAP_GEN(dev->mdev, eth_net_offloads) &&
>> - (MLX5_CAP_ETH(dev->mdev, csum_cap)))
>> + if (MLX5_CAP_GEN(dev->mdev, eth_net_offloads)) {
>> + if (MLX5_CAP_ETH(mdev, csum_cap))
>> props->device_cap_flags |= IB_DEVICE_RAW_IP_CSUM;
>>
>> + max_lso = MLX5_CAP_ETH(mdev, max_lso_cap);
>> + if (max_lso) {
>> + props->lso_caps.max_lso = 1 << max_lso;
>> + props->lso_caps.supported_qpts |=
>> + 1 << IB_QPT_RAW_ETHERTYPE;
> what?!
>
> This QP type is not supported by the driver
>
>
>> + }
>> + }
>> +
>> if (MLX5_CAP_GEN(mdev, ipoib_basic_offloads)) {
>> props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM;
>> props->device_cap_flags |= IB_DEVICE_UD_TSO;
>> --
Will change to IB_QPT_RAW_PACKET
--
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