Author: hselasky
Date: Mon Oct 7 09:40:57 2019
New Revision: 353236
URL: https://svnweb.freebsd.org/changeset/base/353236
Log:
MFC r352981:
Import Linux code to query/set buffer state in mlx5en(4).
Submitted by: kib@
Sponsored by: Mellanox Technologies
Added:
stable/11/sys/dev/mlx5/mlx5_en/mlx5_en_port_buffer.c
- copied unchanged from r352981,
head/sys/dev/mlx5/mlx5_en/mlx5_en_port_buffer.c
stable/11/sys/dev/mlx5/mlx5_en/port_buffer.h
- copied unchanged from r352981, head/sys/dev/mlx5/mlx5_en/port_buffer.h
Modified:
stable/11/sys/conf/files
stable/11/sys/dev/mlx5/mlx5_core/mlx5_port.c
stable/11/sys/dev/mlx5/mlx5_en/en.h
stable/11/sys/dev/mlx5/port.h
stable/11/sys/modules/mlx5en/Makefile
Directory Properties:
stable/11/ (props changed)
Modified: stable/11/sys/conf/files
==============================================================================
--- stable/11/sys/conf/files Mon Oct 7 09:39:05 2019 (r353235)
+++ stable/11/sys/conf/files Mon Oct 7 09:40:57 2019 (r353236)
@@ -4625,6 +4625,8 @@ dev/mlx5/mlx5_en/mlx5_en_rx.c
optional mlx5en pci in
compile-with "${OFED_C}"
dev/mlx5/mlx5_en/mlx5_en_txrx.c optional mlx5en pci
inet inet6 \
compile-with "${OFED_C}"
+dev/mlx5/mlx5_en/mlx5_en_port_buffer.c optional mlx5en pci inet inet6
\
+ compile-with "${OFED_C}"
# crypto support
opencrypto/cast.c optional crypto | ipsec | ipsec_support
Modified: stable/11/sys/dev/mlx5/mlx5_core/mlx5_port.c
==============================================================================
--- stable/11/sys/dev/mlx5/mlx5_core/mlx5_port.c Mon Oct 7 09:39:05
2019 (r353235)
+++ stable/11/sys/dev/mlx5/mlx5_core/mlx5_port.c Mon Oct 7 09:40:57
2019 (r353236)
@@ -1236,3 +1236,220 @@ mlx5_set_mfrl_reg(struct mlx5_core_dev *mdev, u8 reset
return (mlx5_core_access_reg(mdev, mfrl, sz, mfrl, sz, MLX5_REG_MFRL,
0, 1));
}
+
+/* speed in units of 1Mb */
+static const u32 mlx5e_link_speed[/*MLX5E_LINK_MODES_NUMBER*/] = {
+ [MLX5E_1000BASE_CX_SGMII] = 1000,
+ [MLX5E_1000BASE_KX] = 1000,
+ [MLX5E_10GBASE_CX4] = 10000,
+ [MLX5E_10GBASE_KX4] = 10000,
+ [MLX5E_10GBASE_KR] = 10000,
+ [MLX5E_20GBASE_KR2] = 20000,
+ [MLX5E_40GBASE_CR4] = 40000,
+ [MLX5E_40GBASE_KR4] = 40000,
+ [MLX5E_56GBASE_R4] = 56000,
+ [MLX5E_10GBASE_CR] = 10000,
+ [MLX5E_10GBASE_SR] = 10000,
+ [MLX5E_10GBASE_ER_LR] = 10000,
+ [MLX5E_40GBASE_SR4] = 40000,
+ [MLX5E_40GBASE_LR4_ER4] = 40000,
+ [MLX5E_50GBASE_SR2] = 50000,
+ [MLX5E_100GBASE_CR4] = 100000,
+ [MLX5E_100GBASE_SR4] = 100000,
+ [MLX5E_100GBASE_KR4] = 100000,
+ [MLX5E_100GBASE_LR4] = 100000,
+ [MLX5E_100BASE_TX] = 100,
+ [MLX5E_1000BASE_T] = 1000,
+ [MLX5E_10GBASE_T] = 10000,
+ [MLX5E_25GBASE_CR] = 25000,
+ [MLX5E_25GBASE_KR] = 25000,
+ [MLX5E_25GBASE_SR] = 25000,
+ [MLX5E_50GBASE_CR2] = 50000,
+ [MLX5E_50GBASE_KR2] = 50000,
+};
+
+static const u32 mlx5e_ext_link_speed[/*MLX5E_EXT_LINK_MODES_NUMBER*/] = {
+ [MLX5E_SGMII_100M] = 100,
+ [MLX5E_1000BASE_X_SGMII] = 1000,
+ [MLX5E_5GBASE_R] = 5000,
+ [MLX5E_10GBASE_XFI_XAUI_1] = 10000,
+ [MLX5E_40GBASE_XLAUI_4_XLPPI_4] = 40000,
+ [MLX5E_25GAUI_1_25GBASE_CR_KR] = 25000,
+ [MLX5E_50GAUI_2_LAUI_2_50GBASE_CR2_KR2] = 50000,
+ [MLX5E_50GAUI_1_LAUI_1_50GBASE_CR_KR] = 50000,
+ [MLX5E_CAUI_4_100GBASE_CR4_KR4] = 100000,
+ [MLX5E_200GAUI_4_200GBASE_CR4_KR4] = 200000,
+ [MLX5E_400GAUI_8] = 400000,
+};
+
+static void mlx5e_port_get_speed_arr(struct mlx5_core_dev *mdev,
+ const u32 **arr, u32 *size)
+{
+ bool ext = MLX5_CAP_PCAM_FEATURE(mdev, ptys_extended_ethernet);
+
+ *size = ext ? ARRAY_SIZE(mlx5e_ext_link_speed) :
+ ARRAY_SIZE(mlx5e_link_speed);
+ *arr = ext ? mlx5e_ext_link_speed : mlx5e_link_speed;
+}
+
+u32 mlx5e_port_ptys2speed(struct mlx5_core_dev *mdev, u32 eth_proto_oper)
+{
+ unsigned long temp = eth_proto_oper;
+ const u32 *table;
+ u32 speed = 0;
+ u32 max_size;
+ int i;
+
+ mlx5e_port_get_speed_arr(mdev, &table, &max_size);
+ i = find_first_bit(&temp, max_size);
+ if (i < max_size)
+ speed = table[i];
+ return speed;
+}
+
+int mlx5_port_query_eth_proto(struct mlx5_core_dev *dev, u8 port, bool ext,
+ struct mlx5e_port_eth_proto *eproto)
+{
+ u32 out[MLX5_ST_SZ_DW(ptys_reg)];
+ int err;
+
+ if (!eproto)
+ return -EINVAL;
+
+ err = mlx5_query_port_ptys(dev, out, sizeof(out), MLX5_PTYS_EN, port);
+ if (err)
+ return err;
+
+ eproto->cap = MLX5_GET_ETH_PROTO(ptys_reg, out, ext,
+ eth_proto_capability);
+ eproto->admin = MLX5_GET_ETH_PROTO(ptys_reg, out, ext, eth_proto_admin);
+ eproto->oper = MLX5_GET_ETH_PROTO(ptys_reg, out, ext, eth_proto_oper);
+ return 0;
+}
+
+int mlx5e_port_linkspeed(struct mlx5_core_dev *mdev, u32 *speed)
+{
+ struct mlx5e_port_eth_proto eproto;
+ bool ext;
+ int err;
+
+ ext = MLX5_CAP_PCAM_FEATURE(mdev, ptys_extended_ethernet);
+ err = mlx5_port_query_eth_proto(mdev, 1, ext, &eproto);
+ if (err)
+ goto out;
+
+ *speed = mlx5e_port_ptys2speed(mdev, eproto.oper);
+ if (!(*speed))
+ err = -EINVAL;
+
+out:
+ return err;
+}
+
+int mlx5e_port_query_pbmc(struct mlx5_core_dev *mdev, void *out)
+{
+ int sz = MLX5_ST_SZ_BYTES(pbmc_reg);
+ void *in;
+ int err;
+
+ in = kzalloc(sz, GFP_KERNEL);
+ if (!in)
+ return -ENOMEM;
+
+ MLX5_SET(pbmc_reg, in, local_port, 1);
+ err = mlx5_core_access_reg(mdev, in, sz, out, sz, MLX5_REG_PBMC, 0, 0);
+
+ kfree(in);
+ return err;
+}
+
+int mlx5e_port_set_pbmc(struct mlx5_core_dev *mdev, void *in)
+{
+ int sz = MLX5_ST_SZ_BYTES(pbmc_reg);
+ void *out;
+ int err;
+
+ out = kzalloc(sz, GFP_KERNEL);
+ if (!out)
+ return -ENOMEM;
+
+ MLX5_SET(pbmc_reg, in, local_port, 1);
+ err = mlx5_core_access_reg(mdev, in, sz, out, sz, MLX5_REG_PBMC, 0, 1);
+
+ kfree(out);
+ return err;
+}
+
+/* buffer[i]: buffer that priority i mapped to */
+int mlx5e_port_query_priority2buffer(struct mlx5_core_dev *mdev, u8 *buffer)
+{
+ int sz = MLX5_ST_SZ_BYTES(pptb_reg);
+ u32 prio_x_buff;
+ void *out;
+ void *in;
+ int prio;
+ int err;
+
+ in = kzalloc(sz, GFP_KERNEL);
+ out = kzalloc(sz, GFP_KERNEL);
+ if (!in || !out) {
+ err = -ENOMEM;
+ goto out;
+ }
+
+ MLX5_SET(pptb_reg, in, local_port, 1);
+ err = mlx5_core_access_reg(mdev, in, sz, out, sz, MLX5_REG_PPTB, 0, 0);
+ if (err)
+ goto out;
+
+ prio_x_buff = MLX5_GET(pptb_reg, out, prio_x_buff);
+ for (prio = 0; prio < 8; prio++) {
+ buffer[prio] = (u8)(prio_x_buff >> (4 * prio)) & 0xF;
+ mlx5_core_dbg(mdev, "prio %d, buffer %d\n", prio, buffer[prio]);
+ }
+out:
+ kfree(in);
+ kfree(out);
+ return err;
+}
+
+int mlx5e_port_set_priority2buffer(struct mlx5_core_dev *mdev, u8 *buffer)
+{
+ int sz = MLX5_ST_SZ_BYTES(pptb_reg);
+ u32 prio_x_buff;
+ void *out;
+ void *in;
+ int prio;
+ int err;
+
+ in = kzalloc(sz, GFP_KERNEL);
+ out = kzalloc(sz, GFP_KERNEL);
+ if (!in || !out) {
+ err = -ENOMEM;
+ goto out;
+ }
+
+ /* First query the pptb register */
+ MLX5_SET(pptb_reg, in, local_port, 1);
+ err = mlx5_core_access_reg(mdev, in, sz, out, sz, MLX5_REG_PPTB, 0, 0);
+ if (err)
+ goto out;
+
+ memcpy(in, out, sz);
+ MLX5_SET(pptb_reg, in, local_port, 1);
+
+ /* Update the pm and prio_x_buff */
+ MLX5_SET(pptb_reg, in, pm, 0xFF);
+
+ prio_x_buff = 0;
+ for (prio = 0; prio < 8; prio++)
+ prio_x_buff |= (buffer[prio] << (4 * prio));
+ MLX5_SET(pptb_reg, in, prio_x_buff, prio_x_buff);
+
+ err = mlx5_core_access_reg(mdev, in, sz, out, sz, MLX5_REG_PPTB, 0, 1);
+
+out:
+ kfree(in);
+ kfree(out);
+ return err;
+}
Modified: stable/11/sys/dev/mlx5/mlx5_en/en.h
==============================================================================
--- stable/11/sys/dev/mlx5/mlx5_en/en.h Mon Oct 7 09:39:05 2019
(r353235)
+++ stable/11/sys/dev/mlx5/mlx5_en/en.h Mon Oct 7 09:40:57 2019
(r353236)
@@ -951,6 +951,11 @@ struct mlx5e_flow_tables {
struct mlx5e_flow_table inner_rss;
};
+struct mlx5e_dcbx {
+ u32 cable_len;
+ u32 xoff;
+};
+
struct mlx5e_priv {
struct mlx5_core_dev *mdev; /* must be first */
@@ -1008,6 +1013,8 @@ struct mlx5e_priv {
int media_active_last;
struct callout watchdog;
+
+ struct mlx5e_dcbx dcbx;
struct mlx5e_channel channel[];
};
Copied: stable/11/sys/dev/mlx5/mlx5_en/mlx5_en_port_buffer.c (from r352981,
head/sys/dev/mlx5/mlx5_en/mlx5_en_port_buffer.c)
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ stable/11/sys/dev/mlx5/mlx5_en/mlx5_en_port_buffer.c Mon Oct 7
09:40:57 2019 (r353236, copy of r352981,
head/sys/dev/mlx5/mlx5_en/mlx5_en_port_buffer.c)
@@ -0,0 +1,328 @@
+/*-
+ * Copyright (c) 2018 Mellanox Technologies. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS `AS IS' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#include "port_buffer.h"
+
+#define MLX5E_MAX_PORT_MTU 9216
+
+int mlx5e_port_query_buffer(struct mlx5e_priv *priv,
+ struct mlx5e_port_buffer *port_buffer)
+{
+ struct mlx5_core_dev *mdev = priv->mdev;
+ int sz = MLX5_ST_SZ_BYTES(pbmc_reg);
+ u32 total_used = 0;
+ void *buffer;
+ void *out;
+ int err;
+ int i;
+
+ out = kzalloc(sz, GFP_KERNEL);
+ if (!out)
+ return -ENOMEM;
+
+ err = mlx5e_port_query_pbmc(mdev, out);
+ if (err)
+ goto out;
+
+ for (i = 0; i < MLX5E_MAX_BUFFER; i++) {
+ buffer = MLX5_ADDR_OF(pbmc_reg, out, buffer[i]);
+ port_buffer->buffer[i].lossy =
+ MLX5_GET(bufferx_reg, buffer, lossy);
+ port_buffer->buffer[i].epsb =
+ MLX5_GET(bufferx_reg, buffer, epsb);
+ port_buffer->buffer[i].size =
+ MLX5_GET(bufferx_reg, buffer, size) <<
MLX5E_BUFFER_CELL_SHIFT;
+ port_buffer->buffer[i].xon =
+ MLX5_GET(bufferx_reg, buffer, xon_threshold) <<
MLX5E_BUFFER_CELL_SHIFT;
+ port_buffer->buffer[i].xoff =
+ MLX5_GET(bufferx_reg, buffer, xoff_threshold) <<
MLX5E_BUFFER_CELL_SHIFT;
+ total_used += port_buffer->buffer[i].size;
+
+ mlx5e_dbg(HW, priv, "buffer %d: size=%d, xon=%d, xoff=%d,
epsb=%d, lossy=%d\n", i,
+ port_buffer->buffer[i].size,
+ port_buffer->buffer[i].xon,
+ port_buffer->buffer[i].xoff,
+ port_buffer->buffer[i].epsb,
+ port_buffer->buffer[i].lossy);
+ }
+
+ port_buffer->port_buffer_size =
+ MLX5_GET(pbmc_reg, out, port_buffer_size) <<
MLX5E_BUFFER_CELL_SHIFT;
+ port_buffer->spare_buffer_size =
+ port_buffer->port_buffer_size - total_used;
+
+ mlx5e_dbg(HW, priv, "total buffer size=%d, spare buffer size=%d\n",
+ port_buffer->port_buffer_size,
+ port_buffer->spare_buffer_size);
+out:
+ kfree(out);
+ return err;
+}
+
+static int port_set_buffer(struct mlx5e_priv *priv,
+ struct mlx5e_port_buffer *port_buffer)
+{
+ struct mlx5_core_dev *mdev = priv->mdev;
+ int sz = MLX5_ST_SZ_BYTES(pbmc_reg);
+ void *buffer;
+ void *in;
+ int err;
+ int i;
+
+ in = kzalloc(sz, GFP_KERNEL);
+ if (!in)
+ return -ENOMEM;
+
+ err = mlx5e_port_query_pbmc(mdev, in);
+ if (err)
+ goto out;
+
+ for (i = 0; i < MLX5E_MAX_BUFFER; i++) {
+ buffer = MLX5_ADDR_OF(pbmc_reg, in, buffer[i]);
+
+ MLX5_SET(bufferx_reg, buffer, size,
+ port_buffer->buffer[i].size >>
MLX5E_BUFFER_CELL_SHIFT);
+ MLX5_SET(bufferx_reg, buffer, lossy,
+ port_buffer->buffer[i].lossy);
+ MLX5_SET(bufferx_reg, buffer, xoff_threshold,
+ port_buffer->buffer[i].xoff >>
MLX5E_BUFFER_CELL_SHIFT);
+ MLX5_SET(bufferx_reg, buffer, xon_threshold,
+ port_buffer->buffer[i].xon >> MLX5E_BUFFER_CELL_SHIFT);
+ }
+
+ err = mlx5e_port_set_pbmc(mdev, in);
+out:
+ kfree(in);
+ return err;
+}
+
+/* xoff = ((301+2.16 * len [m]) * speed [Gbps] + 2.72 MTU [B]) */
+static u32 calculate_xoff(struct mlx5e_priv *priv, unsigned int mtu)
+{
+ u32 speed;
+ u32 xoff;
+ int err;
+
+ err = mlx5e_port_linkspeed(priv->mdev, &speed);
+ if (err) {
+ mlx5_core_warn(priv->mdev, "cannot get port speed\n");
+ speed = SPEED_40000;
+ }
+ speed = max_t(u32, speed, SPEED_40000);
+ xoff = (301 + 216 * priv->dcbx.cable_len / 100) * speed / 1000 + 272 *
mtu / 100;
+
+ mlx5e_dbg(HW, priv, "%s: xoff=%d\n", __func__, xoff);
+ return xoff;
+}
+
+static int update_xoff_threshold(struct mlx5e_port_buffer *port_buffer,
+ u32 xoff)
+{
+ int i;
+
+ for (i = 0; i < MLX5E_MAX_BUFFER; i++) {
+ if (port_buffer->buffer[i].lossy) {
+ port_buffer->buffer[i].xoff = 0;
+ port_buffer->buffer[i].xon = 0;
+ continue;
+ }
+
+ if (port_buffer->buffer[i].size <
+ (xoff + MLX5E_MAX_PORT_MTU + (1 <<
MLX5E_BUFFER_CELL_SHIFT)))
+ return -ENOMEM;
+
+ port_buffer->buffer[i].xoff = port_buffer->buffer[i].size -
xoff;
+ port_buffer->buffer[i].xon =
+ port_buffer->buffer[i].xoff - MLX5E_MAX_PORT_MTU;
+ }
+
+ return 0;
+}
+
+/**
+ * update_buffer_lossy()
+ * mtu: device's MTU
+ * pfc_en: <input> current pfc configuration
+ * buffer: <input> current prio to buffer mapping
+ * xoff: <input> xoff value
+ * port_buffer: <output> port receive buffer configuration
+ * change: <output>
+ *
+ * Update buffer configuration based on pfc configuraiton and priority
+ * to buffer mapping.
+ * Buffer's lossy bit is changed to:
+ * lossless if there is at least one PFC enabled priority mapped to this
buffer
+ * lossy if all priorities mapped to this buffer are PFC disabled
+ *
+ * Return:
+ * Return 0 if no error.
+ * Set change to true if buffer configuration is modified.
+ */
+static int update_buffer_lossy(unsigned int mtu,
+ u8 pfc_en, u8 *buffer, u32 xoff,
+ struct mlx5e_port_buffer *port_buffer,
+ bool *change)
+{
+ bool changed = false;
+ u8 lossy_count;
+ u8 prio_count;
+ u8 lossy;
+ int prio;
+ int err;
+ int i;
+
+ for (i = 0; i < MLX5E_MAX_BUFFER; i++) {
+ prio_count = 0;
+ lossy_count = 0;
+
+ for (prio = 0; prio < MLX5E_MAX_PRIORITY; prio++) {
+ if (buffer[prio] != i)
+ continue;
+
+ prio_count++;
+ lossy_count += !(pfc_en & (1 << prio));
+ }
+
+ if (lossy_count == prio_count)
+ lossy = 1;
+ else /* lossy_count < prio_count */
+ lossy = 0;
+
+ if (lossy != port_buffer->buffer[i].lossy) {
+ port_buffer->buffer[i].lossy = lossy;
+ changed = true;
+ }
+ }
+
+ if (changed) {
+ err = update_xoff_threshold(port_buffer, xoff);
+ if (err)
+ return err;
+
+ *change = true;
+ }
+
+ return 0;
+}
+
+int mlx5e_port_manual_buffer_config(struct mlx5e_priv *priv,
+ u32 change, unsigned int mtu,
+ struct ieee_pfc *pfc,
+ u32 *buffer_size,
+ u8 *prio2buffer)
+{
+ struct mlx5e_port_buffer port_buffer;
+ u32 xoff = calculate_xoff(priv, mtu);
+ bool update_prio2buffer = false;
+ u8 buffer[MLX5E_MAX_PRIORITY];
+ bool update_buffer = false;
+ u32 total_used = 0;
+ u8 curr_pfc_en;
+ int err;
+ int i;
+
+ mlx5e_dbg(HW, priv, "%s: change=%x\n", __func__, change);
+
+ err = mlx5e_port_query_buffer(priv, &port_buffer);
+ if (err)
+ return err;
+
+ if (change & MLX5E_PORT_BUFFER_CABLE_LEN) {
+ update_buffer = true;
+ err = update_xoff_threshold(&port_buffer, xoff);
+ if (err)
+ return err;
+ }
+
+ if (change & MLX5E_PORT_BUFFER_PFC) {
+ err = mlx5e_port_query_priority2buffer(priv->mdev, buffer);
+ if (err)
+ return err;
+
+ err = update_buffer_lossy(mtu, pfc->pfc_en, buffer, xoff,
+ &port_buffer, &update_buffer);
+ if (err)
+ return err;
+ }
+
+ if (change & MLX5E_PORT_BUFFER_PRIO2BUFFER) {
+ update_prio2buffer = true;
+ err = mlx5_query_port_pfc(priv->mdev, &curr_pfc_en, NULL);
+ if (err)
+ return err;
+
+ err = update_buffer_lossy(mtu, curr_pfc_en, prio2buffer, xoff,
+ &port_buffer, &update_buffer);
+ if (err)
+ return err;
+ }
+
+ if (change & MLX5E_PORT_BUFFER_SIZE) {
+ for (i = 0; i < MLX5E_MAX_BUFFER; i++) {
+ mlx5e_dbg(HW, priv, "%s: buffer[%d]=%d\n", __func__, i,
buffer_size[i]);
+ if (!port_buffer.buffer[i].lossy && !buffer_size[i]) {
+ mlx5e_dbg(HW, priv, "%s: lossless buffer[%d]
size cannot be zero\n",
+ __func__, i);
+ return -EINVAL;
+ }
+
+ port_buffer.buffer[i].size = buffer_size[i];
+ total_used += buffer_size[i];
+ }
+
+ mlx5e_dbg(HW, priv, "%s: total buffer requested=%d\n",
__func__, total_used);
+
+ if (total_used > port_buffer.port_buffer_size)
+ return -EINVAL;
+
+ update_buffer = true;
+ err = update_xoff_threshold(&port_buffer, xoff);
+ if (err)
+ return err;
+ }
+
+ /* Need to update buffer configuration if xoff value is changed */
+ if (!update_buffer && xoff != priv->dcbx.xoff) {
+ update_buffer = true;
+ err = update_xoff_threshold(&port_buffer, xoff);
+ if (err)
+ return err;
+ }
+ priv->dcbx.xoff = xoff;
+
+ /* Apply the settings */
+ if (update_buffer) {
+ err = port_set_buffer(priv, &port_buffer);
+ if (err)
+ return err;
+ }
+
+ if (update_prio2buffer)
+ err = mlx5e_port_set_priority2buffer(priv->mdev, prio2buffer);
+
+ return err;
+}
Copied: stable/11/sys/dev/mlx5/mlx5_en/port_buffer.h (from r352981,
head/sys/dev/mlx5/mlx5_en/port_buffer.h)
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ stable/11/sys/dev/mlx5/mlx5_en/port_buffer.h Mon Oct 7 09:40:57
2019 (r353236, copy of r352981, head/sys/dev/mlx5/mlx5_en/port_buffer.h)
@@ -0,0 +1,82 @@
+/*-
+ * Copyright (c) 2018 Mellanox Technologies. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS `AS IS' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef __MLX5_EN_PORT_BUFFER_H__
+#define __MLX5_EN_PORT_BUFFER_H__
+
+#include "en.h"
+#include <dev/mlx5/port.h>
+
+#define MLX5E_MAX_BUFFER 8
+#define MLX5E_BUFFER_CELL_SHIFT 7
+#define MLX5E_DEFAULT_CABLE_LEN 7 /* 7 meters */
+
+#define MLX5_BUFFER_SUPPORTED(mdev) (MLX5_CAP_GEN(mdev, pcam_reg) && \
+ MLX5_CAP_PCAM_REG(mdev, pbmc) && \
+ MLX5_CAP_PCAM_REG(mdev, pptb))
+
+enum {
+ MLX5E_PORT_BUFFER_CABLE_LEN = BIT(0),
+ MLX5E_PORT_BUFFER_PFC = BIT(1),
+ MLX5E_PORT_BUFFER_PRIO2BUFFER = BIT(2),
+ MLX5E_PORT_BUFFER_SIZE = BIT(3),
+};
+
+struct mlx5e_bufferx_reg {
+ u8 lossy;
+ u8 epsb;
+ u32 size;
+ u32 xoff;
+ u32 xon;
+};
+
+struct mlx5e_port_buffer {
+ u32 port_buffer_size;
+ u32 spare_buffer_size;
+ struct mlx5e_bufferx_reg buffer[MLX5E_MAX_BUFFER];
+};
+
+#define IEEE_8021QAZ_MAX_TCS 8
+
+struct ieee_pfc {
+ __u8 pfc_cap;
+ __u8 pfc_en;
+ __u8 mbc;
+ __u16 delay;
+ __u64 requests[IEEE_8021QAZ_MAX_TCS];
+ __u64 indications[IEEE_8021QAZ_MAX_TCS];
+};
+
+int mlx5e_port_manual_buffer_config(struct mlx5e_priv *priv,
+ u32 change, unsigned int mtu,
+ struct ieee_pfc *pfc,
+ u32 *buffer_size,
+ u8 *prio2buffer);
+
+int mlx5e_port_query_buffer(struct mlx5e_priv *priv,
+ struct mlx5e_port_buffer *port_buffer);
+#endif
Modified: stable/11/sys/dev/mlx5/port.h
==============================================================================
--- stable/11/sys/dev/mlx5/port.h Mon Oct 7 09:39:05 2019
(r353235)
+++ stable/11/sys/dev/mlx5/port.h Mon Oct 7 09:40:57 2019
(r353236)
@@ -179,7 +179,16 @@ enum mlx5_qpts_trust_state {
MLX5_QPTS_TRUST_DSCP = 2,
MLX5_QPTS_TRUST_BOTH = 3,
};
+struct mlx5e_port_eth_proto {
+ u32 cap;
+ u32 admin;
+ u32 oper;
+};
+#ifndef SPEED_40000
+#define SPEED_40000 40000
+#endif
+
#define MLX5E_PROT_MASK(link_mode) (1 << (link_mode))
#define PORT_MODULE_EVENT_MODULE_STATUS_MASK 0xF
@@ -251,5 +260,15 @@ int mlx5_set_dscp2prio(struct mlx5_core_dev *mdev, con
int mlx5_query_dscp2prio(struct mlx5_core_dev *mdev, u8 *dscp2prio);
int mlx5_query_pddr_range_info(struct mlx5_core_dev *mdev, u8 local_port, u8
*is_er_type);
+
+u32 mlx5e_port_ptys2speed(struct mlx5_core_dev *mdev, u32 eth_proto_oper);
+int mlx5e_port_linkspeed(struct mlx5_core_dev *mdev, u32 *speed);
+int mlx5_port_query_eth_proto(struct mlx5_core_dev *dev, u8 port, bool ext,
+ struct mlx5e_port_eth_proto *eproto);
+
+int mlx5e_port_query_pbmc(struct mlx5_core_dev *mdev, void *out);
+int mlx5e_port_set_pbmc(struct mlx5_core_dev *mdev, void *in);
+int mlx5e_port_query_priority2buffer(struct mlx5_core_dev *mdev, u8 *buffer);
+int mlx5e_port_set_priority2buffer(struct mlx5_core_dev *mdev, u8 *buffer);
#endif /* __MLX5_PORT_H__ */
Modified: stable/11/sys/modules/mlx5en/Makefile
==============================================================================
--- stable/11/sys/modules/mlx5en/Makefile Mon Oct 7 09:39:05 2019
(r353235)
+++ stable/11/sys/modules/mlx5en/Makefile Mon Oct 7 09:40:57 2019
(r353236)
@@ -10,6 +10,7 @@ mlx5_en_tx.c \
mlx5_en_flow_table.c \
mlx5_en_rx.c \
mlx5_en_txrx.c \
+mlx5_en_port_buffer.c \
device_if.h bus_if.h vnode_if.h pci_if.h \
opt_inet.h opt_inet6.h opt_rss.h
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