Date: Wed, 2 Oct 2019 10:08:04 +0000 (UTC) From: Hans Petter Selasky <hselasky@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r352982 - head/sys/dev/mlx5/mlx5_en Message-ID: <201910021008.x92A84ut028821@repo.freebsd.org>
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Author: hselasky Date: Wed Oct 2 10:08:04 2019 New Revision: 352982 URL: https://svnweb.freebsd.org/changeset/base/352982 Log: Add support for buffer parameter manipulations in mlx5en(4). The following sysctls are added: dev.mce.N.conf.qos.cable_length dev.mce.N.conf.qos.buffers_size dev.mce.N.conf.qos.buffers_prio Submitted by: kib@ MFC after: 3 days Sponsored by: Mellanox Technologies Modified: head/sys/dev/mlx5/mlx5_en/en.h head/sys/dev/mlx5/mlx5_en/mlx5_en_ethtool.c head/sys/dev/mlx5/mlx5_en/mlx5_en_main.c Modified: head/sys/dev/mlx5/mlx5_en/en.h ============================================================================== --- head/sys/dev/mlx5/mlx5_en/en.h Wed Oct 2 10:05:34 2019 (r352981) +++ head/sys/dev/mlx5/mlx5_en/en.h Wed Oct 2 10:08:04 2019 (r352982) @@ -1202,5 +1202,6 @@ void mlx5e_modify_rx_dma(struct mlx5e_priv *priv, uint void mlx5e_resume_sq(struct mlx5e_sq *sq); void mlx5e_update_sq_inline(struct mlx5e_sq *sq); void mlx5e_refresh_sq_inline(struct mlx5e_priv *priv); +int mlx5e_update_buf_lossy(struct mlx5e_priv *priv); #endif /* _MLX5_EN_H_ */ Modified: head/sys/dev/mlx5/mlx5_en/mlx5_en_ethtool.c ============================================================================== --- head/sys/dev/mlx5/mlx5_en/mlx5_en_ethtool.c Wed Oct 2 10:05:34 2019 (r352981) +++ head/sys/dev/mlx5/mlx5_en/mlx5_en_ethtool.c Wed Oct 2 10:08:04 2019 (r352982) @@ -26,6 +26,7 @@ */ #include "en.h" +#include "port_buffer.h" #include <net/sff8472.h> void @@ -429,6 +430,99 @@ done: return (err); } +int +mlx5e_update_buf_lossy(struct mlx5e_priv *priv) +{ + struct ieee_pfc pfc; + + PRIV_ASSERT_LOCKED(priv); + bzero(&pfc, sizeof(pfc)); + pfc.pfc_en = priv->params.rx_priority_flow_control; + return (-mlx5e_port_manual_buffer_config(priv, MLX5E_PORT_BUFFER_PFC, + priv->params_ethtool.hw_mtu, &pfc, NULL, NULL)); +} + +static int +mlx5e_buf_size_handler(SYSCTL_HANDLER_ARGS) +{ + struct mlx5e_priv *priv; + u32 buf_size[MLX5E_MAX_BUFFER]; + struct mlx5e_port_buffer port_buffer; + int error, i; + + priv = arg1; + PRIV_LOCK(priv); + error = -mlx5e_port_query_buffer(priv, &port_buffer); + if (error != 0) + goto done; + for (i = 0; i < nitems(buf_size); i++) + buf_size[i] = port_buffer.buffer[i].size; + error = SYSCTL_OUT(req, buf_size, sizeof(buf_size)); + if (error != 0 || req->newptr == NULL) + goto done; + error = SYSCTL_IN(req, buf_size, sizeof(buf_size)); + if (error != 0) + goto done; + error = -mlx5e_port_manual_buffer_config(priv, MLX5E_PORT_BUFFER_SIZE, + priv->params_ethtool.hw_mtu, NULL, buf_size, NULL); +done: + PRIV_UNLOCK(priv); + return (error); +} + +static int +mlx5e_buf_prio_handler(SYSCTL_HANDLER_ARGS) +{ + struct mlx5e_priv *priv; + struct mlx5_core_dev *mdev; + u8 buffer[MLX5E_MAX_BUFFER]; + int error; + + priv = arg1; + mdev = priv->mdev; + PRIV_LOCK(priv); + error = -mlx5e_port_query_priority2buffer(mdev, buffer); + if (error != 0) + goto done; + error = SYSCTL_OUT(req, buffer, MLX5E_MAX_BUFFER); + if (error != 0 || req->newptr == NULL) + goto done; + error = SYSCTL_IN(req, buffer, MLX5E_MAX_BUFFER); + if (error != 0) + goto done; + error = -mlx5e_port_manual_buffer_config(priv, + MLX5E_PORT_BUFFER_PRIO2BUFFER, + priv->params_ethtool.hw_mtu, NULL, NULL, buffer); + if (error == 0) + error = mlx5e_update_buf_lossy(priv); +done: + PRIV_UNLOCK(priv); + return (error); +} + +static int +mlx5e_cable_length_handler(SYSCTL_HANDLER_ARGS) +{ + struct mlx5e_priv *priv; + u_int cable_len; + int error; + + priv = arg1; + PRIV_LOCK(priv); + cable_len = priv->dcbx.cable_len; + error = sysctl_handle_int(oidp, &cable_len, 0, req); + if (error == 0 && req->newptr != NULL && + cable_len != priv->dcbx.cable_len) { + error = -mlx5e_port_manual_buffer_config(priv, + MLX5E_PORT_BUFFER_CABLE_LEN, priv->params_ethtool.hw_mtu, + NULL, NULL, NULL); + if (error == 0) + priv->dcbx.cable_len = cable_len; + } + PRIV_UNLOCK(priv); + return (error); +} + #define MLX5_PARAM_OFFSET(n) \ __offsetof(struct mlx5e_priv, params_ethtool.n) @@ -1163,6 +1257,7 @@ mlx5e_create_ethtool(struct mlx5e_priv *priv) { struct sysctl_oid *node, *qos_node; const char *pnameunit; + struct mlx5e_port_buffer port_buffer; unsigned x; int i; @@ -1312,5 +1407,23 @@ mlx5e_create_ethtool(struct mlx5e_priv *priv) A B : A); #undef B #undef A + } + + if (mlx5e_port_query_buffer(priv, &port_buffer) == 0) { + SYSCTL_ADD_PROC(&priv->sysctl_ctx, SYSCTL_CHILDREN(qos_node), + OID_AUTO, "buffers_size", + CTLTYPE_U32 | CTLFLAG_RWTUN | CTLFLAG_MPSAFE, + priv, 0, mlx5e_buf_size_handler, "IU", + "Set buffers sizes"); + SYSCTL_ADD_PROC(&priv->sysctl_ctx, SYSCTL_CHILDREN(qos_node), + OID_AUTO, "buffers_prio", + CTLTYPE_U8 | CTLFLAG_RWTUN | CTLFLAG_MPSAFE, + priv, 0, mlx5e_buf_prio_handler, "CU", + "Set prio to buffers mapping"); + SYSCTL_ADD_PROC(&priv->sysctl_ctx, SYSCTL_CHILDREN(qos_node), + OID_AUTO, "cable_length", + CTLTYPE_UINT | CTLFLAG_RWTUN | CTLFLAG_MPSAFE, + priv, 0, mlx5e_cable_length_handler, "IU", + "Set cable length in meters for xoff threshold calculation"); } } Modified: head/sys/dev/mlx5/mlx5_en/mlx5_en_main.c ============================================================================== --- head/sys/dev/mlx5/mlx5_en/mlx5_en_main.c Wed Oct 2 10:05:34 2019 (r352981) +++ head/sys/dev/mlx5/mlx5_en/mlx5_en_main.c Wed Oct 2 10:08:04 2019 (r352982) @@ -3868,8 +3868,11 @@ mlx5e_sysctl_rx_priority_flow_control(SYSCTL_HANDLER_A } /* check if update is required */ - if (rx_pfc != priv->params.rx_priority_flow_control) + if (rx_pfc != priv->params.rx_priority_flow_control) { err = -mlx5e_set_port_pfc(priv); + if (err == 0) + err = mlx5e_update_buf_lossy(priv); + } done: if (err != 0) priv->params.rx_priority_flow_control= rx_pfc;
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