/*
* Copyright (c) 2015-2016, Mellanox Technologies. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the
* OpenIB.org BSD license below:
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* - 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.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef __MLX5_EN_H__
#define __MLX5_EN_H__
#include <linux/if_vlan.h>
#include <linux/etherdevice.h>
#include <linux/timecounter.h>
#include <linux/net_tstamp.h>
#include <linux/ptp_clock_kernel.h>
#include <linux/crash_dump.h>
#include <linux/mlx5/driver.h>
#include <linux/mlx5/qp.h>
#include <linux/mlx5/cq.h>
#include <linux/mlx5/port.h>
#include <linux/mlx5/vport.h>
#include <linux/mlx5/transobj.h>
#include <linux/mlx5/fs.h>
#include <linux/rhashtable.h>
#include <net/switchdev.h>
#include <net/xdp.h>
#include <linux/dim.h>
#include <linux/bits.h>
#include "wq.h"
#include "mlx5_core.h"
#include "en_stats.h"
#include "en/fs.h"
extern const struct net_device_ops mlx5e_netdev_ops;
struct page_pool;
#define MLX5E_METADATA_ETHER_TYPE (0x8CE4)
#define MLX5E_METADATA_ETHER_LEN 8
#define MLX5_SET_CFG(p, f, v) MLX5_SET(create_flow_group_in, p, f, v)
#define MLX5E_ETH_HARD_MTU (ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN)
#define MLX5E_HW2SW_MTU(params, hwmtu) ((hwmtu) - ((params)->hard_mtu))
#define MLX5E_SW2HW_MTU(params, swmtu) ((swmtu) + ((params)->hard_mtu))
#define MLX5E_MAX_PRIORITY 8
#define MLX5E_MAX_DSCP 64
#define MLX5E_MAX_NUM_TC 8
#define MLX5_RX_HEADROOM NET_SKB_PAD
#define MLX5_SKB_FRAG_SZ(len) (SKB_DATA_ALIGN(len) + \
SKB_DATA_ALIGN(sizeof(struct skb_shared_info)))
#define MLX5E_RX_MAX_HEAD (256)
#define MLX5_MPWRQ_MIN_LOG_STRIDE_SZ(mdev) \
(6 + MLX5_CAP_GEN(mdev, cache_line_128byte)) /* HW restriction */
#define MLX5_MPWRQ_LOG_STRIDE_SZ(mdev, req) \
max_t(u32, MLX5_MPWRQ_MIN_LOG_STRIDE_SZ(mdev), req)
#define MLX5_MPWRQ_DEF_LOG_STRIDE_SZ(mdev) \
MLX5_MPWRQ_LOG_STRIDE_SZ(mdev, order_base_2(MLX5E_RX_MAX_HEAD))
#define MLX5_MPWRQ_LOG_WQE_SZ 18
#define MLX5_MPWRQ_WQE_PAGE_ORDER (MLX5_MPWRQ_LOG_WQE_SZ - PAGE_SHIFT > 0 ? \
MLX5_MPWRQ_LOG_WQE_SZ - PAGE_SHIFT : 0)
#define MLX5_MPWRQ_PAGES_PER_WQE BIT(MLX5_MPWRQ_WQE_PAGE_ORDER)
#define MLX5_MTT_OCTW(npages) (ALIGN(npages, 8) / 2)
#define MLX5E_REQUIRED_WQE_MTTS (ALIGN(MLX5_MPWRQ_PAGES_PER_WQE, 8))
#define MLX5E_LOG_ALIGNED_MPWQE_PPW (ilog2(MLX5E_REQUIRED_WQE_MTTS))
#define MLX5E_REQUIRED_MTTS(wqes) (wqes * MLX5E_REQUIRED_WQE_MTTS)
#define MLX5E_MAX_RQ_NUM_MTTS \
((1 << 16) * 2) /* So that MLX5_MTT_OCTW(num_mtts) fits into u16 */
#define MLX5E_ORDER2_MAX_PACKET_MTU (order_base_2(10 * 1024))
#define MLX5E_PARAMS_MAXIMUM_LOG_RQ_SIZE_MPW \
(ilog2(MLX5E_MAX_RQ_NUM_MTTS / MLX5E_REQUIRED_WQE_MTTS))
#define MLX5E_LOG_MAX_RQ_NUM_PACKETS_MPW \
(MLX5E_PARAMS_MAXIMUM_LOG_RQ_SIZE_MPW + \
(MLX5_MPWRQ_LOG_WQE_SZ - MLX5E_ORDER2_MAX_PACKET_MTU))
#define MLX5E_MIN_SKB_FRAG_SZ (MLX5_SKB_FRAG_SZ(MLX5_RX_HEADROOM))
#define MLX5E_LOG_MAX_RX_WQE_BULK \
(ilog2(PAGE_SIZE / roundup_pow_of_two(MLX5E_MIN_SKB_FRAG_SZ)))
#define MLX5E_PARAMS_MINIMUM_LOG_SQ_SIZE 0x6
#define MLX5E_PARAMS_DEFAULT_LOG_SQ_SIZE 0xa
#define MLX5E_PARAMS_MAXIMUM_LOG_SQ_SIZE 0xd
#define MLX5E_PARAMS_MINIMUM_LOG_RQ_SIZE (1 + MLX5E_LOG_MAX_RX_WQE_BULK)
#define MLX5E_PARAMS_DEFAULT_LOG_RQ_SIZE 0xa
#define MLX5E_PARAMS_MAXIMUM_LOG_RQ_SIZE min_t(u8, 0xd, \
MLX5E_LOG_MAX_RQ_NUM_PACKETS_MPW)
#define MLX5E_PARAMS_MINIMUM_LOG_RQ_SIZE_MPW 0x2
#define MLX5E_PARAMS_DEFAULT_LRO_WQE_SZ (64 * 1024)
#define MLX5E_DEFAULT_LRO_TIMEOUT 32
#define MLX5E_LRO_TIMEOUT_ARR_SIZE 4
#define MLX5E_PARAMS_DEFAULT_RX_CQ_MODERATION_USEC 0x10
#define MLX5E_PARAMS_DEFAULT_RX_CQ_MODERATION_USEC_FROM_CQE 0x3
#define MLX5E_PARAMS_DEFAULT_RX_CQ_MODERATION_PKTS 0x20
#define MLX5E_PARAMS_DEFAULT_TX_CQ_MODERATION_USEC 0x10
#define MLX5E_PARAMS_DEFAULT_TX_CQ_MODERATION_USEC_FROM_CQE 0x10
#define MLX5E_PARAMS_DEFAULT_TX_CQ_MODERATION_PKTS 0x20
#define MLX5E_PARAMS_DEFAULT_MIN_RX_WQES 0x80
#define MLX5E_PARAMS_DEFAULT_MIN_RX_WQES_MPW 0x2
#define MLX5E_LOG_INDIR_RQT_SIZE 0x7
#define MLX5E_INDIR_RQT_SIZE BIT(MLX5E_LOG_INDIR_RQT_SIZE)
#define MLX5E_MIN_NUM_CHANNELS 0x1
#define MLX5E_MAX_NUM_CHANNELS (MLX5E_INDIR_RQT_SIZE >> 1)
#define MLX5E_MAX_NUM_SQS (MLX5E_MAX_NUM_CHANNELS * MLX5E_MAX_NUM_TC)
#define MLX5E_TX_CQ_POLL_BUDGET 128
#define MLX5E_TX_XSK_POLL_BUDGET 64
#define MLX5E_SQ_RECOVER_MIN_INTERVAL 500 /* msecs */
#define MLX5E_UMR_WQE_INLINE_SZ \
(sizeof(struct mlx5e_umr_wqe) + \
ALIGN(MLX5_MPWRQ_PAGES_PER_WQE * sizeof(struct mlx5_mtt), \
MLX5_UMR_MTT_ALIGNMENT))
#define MLX5E_UMR_WQEBBS \
(DIV_ROUND_UP(MLX5E_UMR_WQE_INLINE_SZ, MLX5_SEND_WQE_BB))
#define MLX5E_MSG_LEVEL NETIF_MSG_LINK
#define mlx5e_dbg(mlevel, priv, format, ...) \
do { \
if (NETIF_MSG_##mlevel & (priv)->msglevel) \
netdev_warn(priv->netdev, format, \
##__VA_ARGS__); \
} while (0)
enum mlx5e_rq_group {
MLX5E_RQ_GROUP_REGULAR,
MLX5E_RQ_GROUP_XSK,
MLX5E_NUM_RQ_GROUPS /* Keep last. */
};
static inline u16 mlx5_min_rx_wqes(int wq_type, u32 wq_size)
{
switch (wq_type) {
case MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ:
return min_t(u16, MLX5E_PARAMS_DEFAULT_MIN_RX_WQES_MPW,
wq_size / 2);
default:
return min_t(