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numam-dpdk/drivers/net/mlx5/mlx5_prm.h
Xueming Li 5f8ba81c42 net/mlx5: support generic tunnel offloading 
This commit adds support for generic tunnel TSO and checksum offload.
PMD will compute the inner/outer headers offset according to the
mbuf fields. Hardware will do calculation based on offsets and types.

Signed-off-by: Xueming Li <xuemingl@mellanox.com>
Acked-by: Yongseok Koh <yskoh@mellanox.com>
2018-04-27 17:34:43 +01:00

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7.5 KiB
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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright 2016 6WIND S.A.
* Copyright 2016 Mellanox Technologies, Ltd
*/
#ifndef RTE_PMD_MLX5_PRM_H_
#define RTE_PMD_MLX5_PRM_H_
#include <assert.h>
/* Verbs header. */
/* ISO C doesn't support unnamed structs/unions, disabling -pedantic. */
#ifdef PEDANTIC
#pragma GCC diagnostic ignored "-Wpedantic"
#endif
#include <infiniband/mlx5dv.h>
#ifdef PEDANTIC
#pragma GCC diagnostic error "-Wpedantic"
#endif
#include <rte_vect.h>
#include "mlx5_autoconf.h"
/* Get CQE owner bit. */
#define MLX5_CQE_OWNER(op_own) ((op_own) & MLX5_CQE_OWNER_MASK)
/* Get CQE format. */
#define MLX5_CQE_FORMAT(op_own) (((op_own) & MLX5E_CQE_FORMAT_MASK) >> 2)
/* Get CQE opcode. */
#define MLX5_CQE_OPCODE(op_own) (((op_own) & 0xf0) >> 4)
/* Get CQE solicited event. */
#define MLX5_CQE_SE(op_own) (((op_own) >> 1) & 1)
/* Invalidate a CQE. */
#define MLX5_CQE_INVALIDATE (MLX5_CQE_INVALID << 4)
/* Maximum number of packets a multi-packet WQE can handle. */
#define MLX5_MPW_DSEG_MAX 5
/* WQE DWORD size */
#define MLX5_WQE_DWORD_SIZE 16
/* WQE size */
#define MLX5_WQE_SIZE (4 * MLX5_WQE_DWORD_SIZE)
/* Max size of a WQE session. */
#define MLX5_WQE_SIZE_MAX 960U
/* Compute the number of DS. */
#define MLX5_WQE_DS(n) \
(((n) + MLX5_WQE_DWORD_SIZE - 1) / MLX5_WQE_DWORD_SIZE)
/* Room for inline data in multi-packet WQE. */
#define MLX5_MWQE64_INL_DATA 28
/* Default minimum number of Tx queues for inlining packets. */
#define MLX5_EMPW_MIN_TXQS 8
/* Default max packet length to be inlined. */
#define MLX5_EMPW_MAX_INLINE_LEN (4U * MLX5_WQE_SIZE)
#define MLX5_OPC_MOD_ENHANCED_MPSW 0
#define MLX5_OPCODE_ENHANCED_MPSW 0x29
/* CQE value to inform that VLAN is stripped. */
#define MLX5_CQE_VLAN_STRIPPED (1u << 0)
/* IPv4 options. */
#define MLX5_CQE_RX_IP_EXT_OPTS_PACKET (1u << 1)
/* IPv6 packet. */
#define MLX5_CQE_RX_IPV6_PACKET (1u << 2)
/* IPv4 packet. */
#define MLX5_CQE_RX_IPV4_PACKET (1u << 3)
/* TCP packet. */
#define MLX5_CQE_RX_TCP_PACKET (1u << 4)
/* UDP packet. */
#define MLX5_CQE_RX_UDP_PACKET (1u << 5)
/* IP is fragmented. */
#define MLX5_CQE_RX_IP_FRAG_PACKET (1u << 7)
/* L2 header is valid. */
#define MLX5_CQE_RX_L2_HDR_VALID (1u << 8)
/* L3 header is valid. */
#define MLX5_CQE_RX_L3_HDR_VALID (1u << 9)
/* L4 header is valid. */
#define MLX5_CQE_RX_L4_HDR_VALID (1u << 10)
/* Outer packet, 0 IPv4, 1 IPv6. */
#define MLX5_CQE_RX_OUTER_PACKET (1u << 1)
/* Tunnel packet bit in the CQE. */
#define MLX5_CQE_RX_TUNNEL_PACKET (1u << 0)
/* Inner L3 checksum offload (Tunneled packets only). */
#define MLX5_ETH_WQE_L3_INNER_CSUM (1u << 4)
/* Inner L4 checksum offload (Tunneled packets only). */
#define MLX5_ETH_WQE_L4_INNER_CSUM (1u << 5)
/* Outer L4 type is TCP. */
#define MLX5_ETH_WQE_L4_OUTER_TCP (0u << 5)
/* Outer L4 type is UDP. */
#define MLX5_ETH_WQE_L4_OUTER_UDP (1u << 5)
/* Outer L3 type is IPV4. */
#define MLX5_ETH_WQE_L3_OUTER_IPV4 (0u << 4)
/* Outer L3 type is IPV6. */
#define MLX5_ETH_WQE_L3_OUTER_IPV6 (1u << 4)
/* Inner L4 type is TCP. */
#define MLX5_ETH_WQE_L4_INNER_TCP (0u << 1)
/* Inner L4 type is UDP. */
#define MLX5_ETH_WQE_L4_INNER_UDP (1u << 1)
/* Inner L3 type is IPV4. */
#define MLX5_ETH_WQE_L3_INNER_IPV4 (0u << 0)
/* Inner L3 type is IPV6. */
#define MLX5_ETH_WQE_L3_INNER_IPV6 (1u << 0)
/* Is flow mark valid. */
#if RTE_BYTE_ORDER == RTE_LITTLE_ENDIAN
#define MLX5_FLOW_MARK_IS_VALID(val) ((val) & 0xffffff00)
#else
#define MLX5_FLOW_MARK_IS_VALID(val) ((val) & 0xffffff)
#endif
/* INVALID is used by packets matching no flow rules. */
#define MLX5_FLOW_MARK_INVALID 0
/* Maximum allowed value to mark a packet. */
#define MLX5_FLOW_MARK_MAX 0xfffff0
/* Default mark value used when none is provided. */
#define MLX5_FLOW_MARK_DEFAULT 0xffffff
/* Maximum number of DS in WQE. */
#define MLX5_DSEG_MAX 63
/* Subset of struct mlx5_wqe_eth_seg. */
struct mlx5_wqe_eth_seg_small {
uint32_t rsvd0;
uint8_t cs_flags;
uint8_t rsvd1;
uint16_t mss;
uint32_t rsvd2;
uint16_t inline_hdr_sz;
uint8_t inline_hdr[2];
} __rte_aligned(MLX5_WQE_DWORD_SIZE);
struct mlx5_wqe_inl_small {
uint32_t byte_cnt;
uint8_t raw;
} __rte_aligned(MLX5_WQE_DWORD_SIZE);
struct mlx5_wqe_ctrl {
uint32_t ctrl0;
uint32_t ctrl1;
uint32_t ctrl2;
uint32_t ctrl3;
} __rte_aligned(MLX5_WQE_DWORD_SIZE);
/* Small common part of the WQE. */
struct mlx5_wqe {
uint32_t ctrl[4];
struct mlx5_wqe_eth_seg_small eseg;
};
/* Vectorize WQE header. */
struct mlx5_wqe_v {
rte_v128u32_t ctrl;
rte_v128u32_t eseg;
};
/* WQE. */
struct mlx5_wqe64 {
struct mlx5_wqe hdr;
uint8_t raw[32];
} __rte_aligned(MLX5_WQE_SIZE);
/* MPW mode. */
enum mlx5_mpw_mode {
MLX5_MPW_DISABLED,
MLX5_MPW,
MLX5_MPW_ENHANCED, /* Enhanced Multi-Packet Send WQE, a.k.a MPWv2. */
};
/* MPW session status. */
enum mlx5_mpw_state {
MLX5_MPW_STATE_OPENED,
MLX5_MPW_INL_STATE_OPENED,
MLX5_MPW_ENHANCED_STATE_OPENED,
MLX5_MPW_STATE_CLOSED,
};
/* MPW session descriptor. */
struct mlx5_mpw {
enum mlx5_mpw_state state;
unsigned int pkts_n;
unsigned int len;
unsigned int total_len;
volatile struct mlx5_wqe *wqe;
union {
volatile struct mlx5_wqe_data_seg *dseg[MLX5_MPW_DSEG_MAX];
volatile uint8_t *raw;
} data;
};
/* CQ element structure - should be equal to the cache line size */
struct mlx5_cqe {
#if (RTE_CACHE_LINE_SIZE == 128)
uint8_t padding[64];
#endif
uint8_t pkt_info;
uint8_t rsvd0[11];
uint32_t rx_hash_res;
uint8_t rx_hash_type;
uint8_t rsvd1[11];
uint16_t hdr_type_etc;
uint16_t vlan_info;
uint8_t rsvd2[12];
uint32_t byte_cnt;
uint64_t timestamp;
uint32_t sop_drop_qpn;
uint16_t wqe_counter;
uint8_t rsvd4;
uint8_t op_own;
};
/* Adding direct verbs to data-path. */
/* CQ sequence number mask. */
#define MLX5_CQ_SQN_MASK 0x3
/* CQ sequence number index. */
#define MLX5_CQ_SQN_OFFSET 28
/* CQ doorbell index mask. */
#define MLX5_CI_MASK 0xffffff
/* CQ doorbell offset. */
#define MLX5_CQ_ARM_DB 1
/* CQ doorbell offset*/
#define MLX5_CQ_DOORBELL 0x20
/* CQE format value. */
#define MLX5_COMPRESSED 0x3
/* CQE format mask. */
#define MLX5E_CQE_FORMAT_MASK 0xc
/* MPW opcode. */
#define MLX5_OPC_MOD_MPW 0x01
/* Compressed Rx CQE structure. */
struct mlx5_mini_cqe8 {
union {
uint32_t rx_hash_result;
uint32_t checksum;
struct {
uint16_t wqe_counter;
uint8_t s_wqe_opcode;
uint8_t reserved;
} s_wqe_info;
};
uint32_t byte_cnt;
};
/**
* Convert a user mark to flow mark.
*
* @param val
* Mark value to convert.
*
* @return
* Converted mark value.
*/
static inline uint32_t
mlx5_flow_mark_set(uint32_t val)
{
uint32_t ret;
/*
* Add one to the user value to differentiate un-marked flows from
* marked flows, if the ID is equal to MLX5_FLOW_MARK_DEFAULT it
* remains untouched.
*/
if (val != MLX5_FLOW_MARK_DEFAULT)
++val;
#if RTE_BYTE_ORDER == RTE_LITTLE_ENDIAN
/*
* Mark is 24 bits (minus reserved values) but is stored on a 32 bit
* word, byte-swapped by the kernel on little-endian systems. In this
* case, left-shifting the resulting big-endian value ensures the
* least significant 24 bits are retained when converting it back.
*/
ret = rte_cpu_to_be_32(val) >> 8;
#else
ret = val;
#endif
return ret;
}
/**
* Convert a mark to user mark.
*
* @param val
* Mark value to convert.
*
* @return
* Converted mark value.
*/
static inline uint32_t
mlx5_flow_mark_get(uint32_t val)
{
/*
* Subtract one from the retrieved value. It was added by
* mlx5_flow_mark_set() to distinguish unmarked flows.
*/
#if RTE_BYTE_ORDER == RTE_LITTLE_ENDIAN
return (val >> 8) - 1;
#else
return val - 1;
#endif
}
#endif /* RTE_PMD_MLX5_PRM_H_ */
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