Date: Thu, 3 Aug 2017 13:57:18 +0000 (UTC) From: Hans Petter Selasky <hselasky@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-10@freebsd.org Subject: svn commit: r321996 - in stable/10/sys/dev/mlx5: . mlx5_core mlx5_en Message-ID: <201708031357.v73DvI1S050096@repo.freebsd.org>
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Author: hselasky Date: Thu Aug 3 13:57:17 2017 New Revision: 321996 URL: https://svnweb.freebsd.org/changeset/base/321996 Log: MFC r312527: Add runtime support for modifying the SQ and RQ completion event moderation mode. The presence of this feature is indicated through the firmware capabilities. Sponsored by: Mellanox Technologies Modified: stable/10/sys/dev/mlx5/cq.h stable/10/sys/dev/mlx5/mlx5_core/mlx5_cq.c stable/10/sys/dev/mlx5/mlx5_en/mlx5_en_ethtool.c stable/10/sys/dev/mlx5/mlx5_en/mlx5_en_main.c Directory Properties: stable/10/ (props changed) Modified: stable/10/sys/dev/mlx5/cq.h ============================================================================== --- stable/10/sys/dev/mlx5/cq.h Thu Aug 3 13:55:39 2017 (r321995) +++ stable/10/sys/dev/mlx5/cq.h Thu Aug 3 13:57:17 2017 (r321996) @@ -88,6 +88,7 @@ enum { MLX5_CQ_MODIFY_PERIOD = 1 << 0, MLX5_CQ_MODIFY_COUNT = 1 << 1, MLX5_CQ_MODIFY_OVERRUN = 1 << 2, + MLX5_CQ_MODIFY_PERIOD_MODE = 1 << 4, }; enum { @@ -165,6 +166,11 @@ int mlx5_core_modify_cq(struct mlx5_core_dev *dev, str int mlx5_core_modify_cq_moderation(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq, u16 cq_period, u16 cq_max_count); +int mlx5_core_modify_cq_moderation_mode(struct mlx5_core_dev *dev, + struct mlx5_core_cq *cq, + u16 cq_period, + u16 cq_max_count, + u8 cq_mode); int mlx5_debug_cq_add(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq); void mlx5_debug_cq_remove(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq); Modified: stable/10/sys/dev/mlx5/mlx5_core/mlx5_cq.c ============================================================================== --- stable/10/sys/dev/mlx5/mlx5_core/mlx5_cq.c Thu Aug 3 13:55:39 2017 (r321995) +++ stable/10/sys/dev/mlx5/mlx5_core/mlx5_cq.c Thu Aug 3 13:57:17 2017 (r321996) @@ -266,6 +266,28 @@ int mlx5_core_modify_cq_moderation(struct mlx5_core_de return mlx5_core_modify_cq(dev, cq, &in, sizeof(in)); } +int mlx5_core_modify_cq_moderation_mode(struct mlx5_core_dev *dev, + struct mlx5_core_cq *cq, + u16 cq_period, + u16 cq_max_count, + u8 cq_mode) +{ + struct mlx5_modify_cq_mbox_in in; + + memset(&in, 0, sizeof(in)); + + in.cqn = cpu_to_be32(cq->cqn); + in.ctx.cq_period = cpu_to_be16(cq_period); + in.ctx.cq_max_count = cpu_to_be16(cq_max_count); + in.ctx.cqe_sz_flags = (cq_mode & 2) >> 1; + in.ctx.st = (cq_mode & 1) << 7; + in.field_select = cpu_to_be32(MLX5_CQ_MODIFY_PERIOD | + MLX5_CQ_MODIFY_COUNT | + MLX5_CQ_MODIFY_PERIOD_MODE); + + return mlx5_core_modify_cq(dev, cq, &in, sizeof(in)); +} + int mlx5_init_cq_table(struct mlx5_core_dev *dev) { struct mlx5_cq_table *table = &dev->priv.cq_table; Modified: stable/10/sys/dev/mlx5/mlx5_en/mlx5_en_ethtool.c ============================================================================== --- stable/10/sys/dev/mlx5/mlx5_en/mlx5_en_ethtool.c Thu Aug 3 13:55:39 2017 (r321995) +++ stable/10/sys/dev/mlx5/mlx5_en/mlx5_en_ethtool.c Thu Aug 3 13:57:17 2017 (r321996) @@ -92,6 +92,7 @@ mlx5e_ethtool_handler(SYSCTL_HANDLER_ARGS) { struct mlx5e_priv *priv = arg1; uint64_t value; + int mode_modify; int was_opened; int error; @@ -114,6 +115,7 @@ mlx5e_ethtool_handler(SYSCTL_HANDLER_ARGS) goto done; } was_opened = test_bit(MLX5E_STATE_OPENED, &priv->state); + mode_modify = MLX5_CAP_GEN(priv->mdev, cq_period_mode_modify); switch (MLX5_PARAM_OFFSET(arg[arg2])) { case MLX5_PARAM_OFFSET(rx_coalesce_usecs): @@ -266,7 +268,7 @@ mlx5e_ethtool_handler(SYSCTL_HANDLER_ARGS) case MLX5_PARAM_OFFSET(rx_coalesce_mode): /* network interface must be down */ - if (was_opened) + if (was_opened != 0 && mode_modify == 0) mlx5e_close_locked(priv->ifp); /* import RX coalesce mode */ @@ -276,13 +278,17 @@ mlx5e_ethtool_handler(SYSCTL_HANDLER_ARGS) priv->params_ethtool.rx_coalesce_mode; /* restart network interface, if any */ - if (was_opened) - mlx5e_open_locked(priv->ifp); + if (was_opened != 0) { + if (mode_modify == 0) + mlx5e_open_locked(priv->ifp); + else + error = mlx5e_refresh_channel_params(priv); + } break; case MLX5_PARAM_OFFSET(tx_coalesce_mode): /* network interface must be down */ - if (was_opened) + if (was_opened != 0 && mode_modify == 0) mlx5e_close_locked(priv->ifp); /* import TX coalesce mode */ @@ -292,8 +298,12 @@ mlx5e_ethtool_handler(SYSCTL_HANDLER_ARGS) priv->params_ethtool.tx_coalesce_mode; /* restart network interface, if any */ - if (was_opened) - mlx5e_open_locked(priv->ifp); + if (was_opened != 0) { + if (mode_modify == 0) + mlx5e_open_locked(priv->ifp); + else + error = mlx5e_refresh_channel_params(priv); + } break; case MLX5_PARAM_OFFSET(hw_lro): Modified: stable/10/sys/dev/mlx5/mlx5_en/mlx5_en_main.c ============================================================================== --- stable/10/sys/dev/mlx5/mlx5_en/mlx5_en_main.c Thu Aug 3 13:55:39 2017 (r321995) +++ stable/10/sys/dev/mlx5/mlx5_en/mlx5_en_main.c Thu Aug 3 13:57:17 2017 (r321996) @@ -1787,6 +1787,25 @@ mlx5e_close_channels(struct mlx5e_priv *priv) static int mlx5e_refresh_sq_params(struct mlx5e_priv *priv, struct mlx5e_sq *sq) { + + if (MLX5_CAP_GEN(priv->mdev, cq_period_mode_modify)) { + uint8_t cq_mode; + + switch (priv->params.tx_cq_moderation_mode) { + case 0: + cq_mode = MLX5_CQ_PERIOD_MODE_START_FROM_EQE; + break; + default: + cq_mode = MLX5_CQ_PERIOD_MODE_START_FROM_CQE; + break; + } + + return (mlx5_core_modify_cq_moderation_mode(priv->mdev, &sq->cq.mcq, + priv->params.tx_cq_moderation_usec, + priv->params.tx_cq_moderation_pkts, + cq_mode)); + } + return (mlx5_core_modify_cq_moderation(priv->mdev, &sq->cq.mcq, priv->params.tx_cq_moderation_usec, priv->params.tx_cq_moderation_pkts)); @@ -1795,6 +1814,28 @@ mlx5e_refresh_sq_params(struct mlx5e_priv *priv, struc static int mlx5e_refresh_rq_params(struct mlx5e_priv *priv, struct mlx5e_rq *rq) { + + if (MLX5_CAP_GEN(priv->mdev, cq_period_mode_modify)) { + uint8_t cq_mode; + int retval; + + switch (priv->params.rx_cq_moderation_mode) { + case 0: + cq_mode = MLX5_CQ_PERIOD_MODE_START_FROM_EQE; + break; + default: + cq_mode = MLX5_CQ_PERIOD_MODE_START_FROM_CQE; + break; + } + + retval = mlx5_core_modify_cq_moderation_mode(priv->mdev, &rq->cq.mcq, + priv->params.rx_cq_moderation_usec, + priv->params.rx_cq_moderation_pkts, + cq_mode); + + return (retval); + } + return (mlx5_core_modify_cq_moderation(priv->mdev, &rq->cq.mcq, priv->params.rx_cq_moderation_usec, priv->params.rx_cq_moderation_pkts));
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