From mboxrd@z Thu Jan 1 00:00:00 1970 From: Amir Vadai Subject: [PATCH V1 0/6] net/mlx4_en: DCB QoS support Date: Wed, 21 Mar 2012 11:24:57 +0200 Message-ID: <1332321903-11704-1-git-send-email-amirv@mellanox.com> Cc: netdev@vger.kernel.org, Roland Dreier , Oren Duer , Amir Vadai To: "David S. Miller" Return-path: Received: from eu1sys200aog117.obsmtp.com ([207.126.144.143]:42864 "HELO eu1sys200aog117.obsmtp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1755412Ab2CUJZg (ORCPT ); Wed, 21 Mar 2012 05:25:36 -0400 Sender: netdev-owner@vger.kernel.org List-ID: DCBX version 802.1qaz is supported. User Priority (UP) is set in QP context instead of in WQE (QP Work Queue Element), which means that all traffic from a queue will have the same UP. UP is also set for untagged traffic to be able to classify such traffic too. Mapping from sk_prio to User Priority is done by sch_mqprio mapping. Although confusingly sch_mqprio maps sk_prio to something called TC, it is not related to DCBX's TC, and is interpreted by mlx4_en driver as UP. The Current HW based QoS mechanism which was introduced in commit 4f57c087de9 "net: implement mechanism for HW based QOS" is in orientation to ETS traffic class. Patch 7/8 introduces an approach which allow to use this mechanism also with hardware who has queues per user priority (UP). After the change, __skb_tx_hash() will direct a flow to a tx ring from a range of tx rings. This range is defined by the caller function by the specific HW. If TC based queues, the range is by TC number and for UP based queues, the range is by UP. --- Changes from V0: - Removed patches 6 and 7 who deal with the interaction between the kernel HW QoS constructs to the queue selection logic are still under discussion with John and some changes might be needed there. Amir Vadai (6): net/mlx4_en: Force user priority by QP attribute net/mlx4_core: set port QoS attributes net/mlx4_en: DCB QoS support net/mlx4_en: Set max rate-limit for a TC net/mlx4_en: sk_prio <=> UP for untagged traffic IB/rdma_cm: TOS <=> UP mapping for IBoE drivers/infiniband/core/cma.c | 35 ++++- drivers/net/ethernet/mellanox/mlx4/Kconfig | 12 ++ drivers/net/ethernet/mellanox/mlx4/Makefile | 1 + drivers/net/ethernet/mellanox/mlx4/en_dcb_nl.c | 215 +++++++++++++++++++++ drivers/net/ethernet/mellanox/mlx4/en_main.c | 2 +- drivers/net/ethernet/mellanox/mlx4/en_netdev.c | 47 +++++- drivers/net/ethernet/mellanox/mlx4/en_port.h | 2 + drivers/net/ethernet/mellanox/mlx4/en_resources.c | 6 +- drivers/net/ethernet/mellanox/mlx4/en_rx.c | 4 +- drivers/net/ethernet/mellanox/mlx4/en_sysfs.c | 120 ++++++++++++ drivers/net/ethernet/mellanox/mlx4/en_tx.c | 23 +-- drivers/net/ethernet/mellanox/mlx4/mlx4.h | 20 ++ drivers/net/ethernet/mellanox/mlx4/mlx4_en.h | 32 +++- drivers/net/ethernet/mellanox/mlx4/port.c | 62 ++++++ include/linux/mlx4/cmd.h | 4 + include/linux/mlx4/device.h | 3 + include/linux/mlx4/qp.h | 3 +- 17 files changed, 569 insertions(+), 22 deletions(-) create mode 100644 drivers/net/ethernet/mellanox/mlx4/en_dcb_nl.c create mode 100644 drivers/net/ethernet/mellanox/mlx4/en_sysfs.c -- 1.7.8.2