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Sun, 24 May 2026 08:38:52 -0700 From: Edward Srouji Date: Sun, 24 May 2026 18:38:06 +0300 Subject: [PATCH rdma-next 5/8] RDMA/mlx5: Report packet pacing capabilities when querying device Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-ID: <20260524-packet-pacing-v1-5-3d79439f8d08@nvidia.com> References: <20260524-packet-pacing-v1-0-3d79439f8d08@nvidia.com> In-Reply-To: <20260524-packet-pacing-v1-0-3d79439f8d08@nvidia.com> To: Leon Romanovsky , Saeed Mahameed , Tariq Toukan , Mark Bloch , "Jason Gunthorpe" , Selvin Xavier , "Kalesh AP" , Abhijit Gangurde , Allen Hubbe CC: , , , Edward Srouji , "Maher Sanalla" , Michael Guralnik X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1779637112; l=2431; i=edwards@nvidia.com; s=20251029; h=from:subject:message-id; bh=aHKU0s9Lx5P7SBAnRFR+71tuNIyqpm30Z5dgLTlRjHE=; b=23xp3+2cL7De6/CKL1OyCdL4H8vtVQJD7tRmwZEipBaEh4ma8WhlucnWVAUXGzpCDSj5wbfvK o1xJaZZ3S02BG+dPqySbq/9vfnTNDjtC8mON4DqMDaq07O/UyriHYSg X-Developer-Key: i=edwards@nvidia.com; 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Signed-off-by: Maher Sanalla Reviewed-by: Michael Guralnik Signed-off-by: Edward Srouji --- drivers/infiniband/hw/mlx5/main.c | 37 +++++++++++++++++++++++-------------- 1 file changed, 23 insertions(+), 14 deletions(-) diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c index 428811fa805b68bf6a011685e027b8407a3e1719..fee5329cf398092c5096ca67aa23880b6e829177 100644 --- a/drivers/infiniband/hw/mlx5/main.c +++ b/drivers/infiniband/hw/mlx5/main.c @@ -1214,20 +1214,29 @@ static int mlx5_ib_query_device(struct ib_device *ibdev, } } - if (offsetofend(typeof(resp), packet_pacing_caps) <= uhw_outlen && - raw_support) { - if (MLX5_CAP_QOS(mdev, packet_pacing) && - MLX5_CAP_GEN(mdev, qos)) { - resp.packet_pacing_caps.qp_rate_limit_max = - MLX5_CAP_QOS(mdev, packet_pacing_max_rate); - resp.packet_pacing_caps.qp_rate_limit_min = - MLX5_CAP_QOS(mdev, packet_pacing_min_rate); - resp.packet_pacing_caps.supported_qpts |= - 1 << IB_QPT_RAW_PACKET; - if (MLX5_CAP_QOS(mdev, packet_pacing_burst_bound) && - MLX5_CAP_QOS(mdev, packet_pacing_typical_size)) - resp.packet_pacing_caps.cap_flags |= - MLX5_IB_PP_SUPPORT_BURST; + if (offsetofend(typeof(resp), packet_pacing_caps) <= uhw_outlen) { + if (MLX5_CAP_GEN(mdev, qos)) { + if (MLX5_CAP_QOS(mdev, packet_pacing) && raw_support) + resp.packet_pacing_caps.supported_qpts |= + BIT(IB_QPT_RAW_PACKET); + if (MLX5_CAP_QOS(mdev, packet_pacing_req_ud)) + resp.packet_pacing_caps.supported_qpts |= + BIT(IB_QPT_UD); + if (MLX5_CAP_QOS(mdev, packet_pacing_req_uc)) + resp.packet_pacing_caps.supported_qpts |= + BIT(IB_QPT_UC); + + if (resp.packet_pacing_caps.supported_qpts) { + resp.packet_pacing_caps.qp_rate_limit_max = + MLX5_CAP_QOS(mdev, packet_pacing_max_rate); + resp.packet_pacing_caps.qp_rate_limit_min = + MLX5_CAP_QOS(mdev, packet_pacing_min_rate); + + if (MLX5_CAP_QOS(mdev, packet_pacing_burst_bound) && + MLX5_CAP_QOS(mdev, packet_pacing_typical_size)) + resp.packet_pacing_caps.cap_flags |= + MLX5_IB_PP_SUPPORT_BURST; + } } resp.response_length += sizeof(resp.packet_pacing_caps); } -- 2.49.0