Re: [PATCH rdma-rext V2 1/5] IB/core: Extend rate limit support for RC QPs

[Leon Romanovsky <leon@kernel.org>]

On Thu, Jan 29, 2026 at 03:51:29PM +0530, Kalesh AP wrote:
> Broadcom devices supports setting the rate limit while changing
> RC QP state from INIT to RTR, RTR to RTS and RTS to RTS.
> 
> Signed-off-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
> Reviewed-by: Damodharam Ammepalli <damodharam.ammepalli@broadcom.com>
> ---
>  drivers/infiniband/core/verbs.c | 9 ++++++---
>  1 file changed, 6 insertions(+), 3 deletions(-)

This patch should be the last in the series. We must first add driver
support, then address the required fixes in the mlx5 driver, and only
after that expose this functionality to users.

Thanks

> 
> diff --git a/drivers/infiniband/core/verbs.c b/drivers/infiniband/core/verbs.c
> index 8b56b6b62352..02ebc3e52196 100644
> --- a/drivers/infiniband/core/verbs.c
> +++ b/drivers/infiniband/core/verbs.c
> @@ -1537,7 +1537,8 @@ static const struct {
>  						 IB_QP_PKEY_INDEX),
>  				 [IB_QPT_RC]  = (IB_QP_ALT_PATH			|
>  						 IB_QP_ACCESS_FLAGS		|
> -						 IB_QP_PKEY_INDEX),
> +						 IB_QP_PKEY_INDEX		|
> +						 IB_QP_RATE_LIMIT),
>  				 [IB_QPT_XRC_INI] = (IB_QP_ALT_PATH		|
>  						 IB_QP_ACCESS_FLAGS		|
>  						 IB_QP_PKEY_INDEX),
> @@ -1585,7 +1586,8 @@ static const struct {
>  						 IB_QP_ALT_PATH			|
>  						 IB_QP_ACCESS_FLAGS		|
>  						 IB_QP_MIN_RNR_TIMER		|
> -						 IB_QP_PATH_MIG_STATE),
> +						 IB_QP_PATH_MIG_STATE		|
> +						 IB_QP_RATE_LIMIT),
>  				 [IB_QPT_XRC_INI] = (IB_QP_CUR_STATE		|
>  						 IB_QP_ALT_PATH			|
>  						 IB_QP_ACCESS_FLAGS		|
> @@ -1619,7 +1621,8 @@ static const struct {
>  						IB_QP_ACCESS_FLAGS		|
>  						IB_QP_ALT_PATH			|
>  						IB_QP_PATH_MIG_STATE		|
> -						IB_QP_MIN_RNR_TIMER),
> +						IB_QP_MIN_RNR_TIMER		|
> +						IB_QP_RATE_LIMIT),
>  				[IB_QPT_XRC_INI] = (IB_QP_CUR_STATE		|
>  						IB_QP_ACCESS_FLAGS		|
>  						IB_QP_ALT_PATH			|
> -- 
> 2.43.5
>