numam-dpdk/drivers/net/hns3/hns3_rss.c

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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2018-2019 Hisilicon Limited.
*/
#include <stdbool.h>
#include <rte_ethdev.h>
#include <rte_io.h>
#include <rte_malloc.h>
#include <rte_memcpy.h>
#include <rte_spinlock.h>
#include "hns3_ethdev.h"
#include "hns3_logs.h"
/*
* The hash key used for rss initialization.
*/
static const uint8_t hns3_hash_key[] = {
0x6D, 0x5A, 0x56, 0xDA, 0x25, 0x5B, 0x0E, 0xC2,
0x41, 0x67, 0x25, 0x3D, 0x43, 0xA3, 0x8F, 0xB0,
0xD0, 0xCA, 0x2B, 0xCB, 0xAE, 0x7B, 0x30, 0xB4,
0x77, 0xCB, 0x2D, 0xA3, 0x80, 0x30, 0xF2, 0x0C,
0x6A, 0x42, 0xB7, 0x3B, 0xBE, 0xAC, 0x01, 0xFA
};
/*
* rss_generic_config command function, opcode:0x0D01.
* Used to set algorithm, key_offset and hash key of rss.
*/
int
hns3_set_rss_algo_key(struct hns3_hw *hw, const uint8_t *key)
{
#define HNS3_KEY_OFFSET_MAX 3
#define HNS3_SET_HASH_KEY_BYTE_FOUR 2
struct hns3_rss_generic_config_cmd *req;
struct hns3_cmd_desc desc;
uint32_t key_offset, key_size;
const uint8_t *key_cur;
uint8_t cur_offset;
int ret;
req = (struct hns3_rss_generic_config_cmd *)desc.data;
/*
* key_offset=0, hash key byte0~15 is set to hardware.
* key_offset=1, hash key byte16~31 is set to hardware.
* key_offset=2, hash key byte32~39 is set to hardware.
*/
for (key_offset = 0; key_offset < HNS3_KEY_OFFSET_MAX; key_offset++) {
hns3_cmd_setup_basic_desc(&desc, HNS3_OPC_RSS_GENERIC_CONFIG,
false);
req->hash_config |=
(hw->rss_info.hash_algo & HNS3_RSS_HASH_ALGO_MASK);
req->hash_config |= (key_offset << HNS3_RSS_HASH_KEY_OFFSET_B);
if (key_offset == HNS3_SET_HASH_KEY_BYTE_FOUR)
key_size = HNS3_RSS_KEY_SIZE - HNS3_RSS_HASH_KEY_NUM *
HNS3_SET_HASH_KEY_BYTE_FOUR;
else
key_size = HNS3_RSS_HASH_KEY_NUM;
cur_offset = key_offset * HNS3_RSS_HASH_KEY_NUM;
key_cur = key + cur_offset;
memcpy(req->hash_key, key_cur, key_size);
ret = hns3_cmd_send(hw, &desc, 1);
if (ret) {
hns3_err(hw, "Configure RSS algo key failed %d", ret);
return ret;
}
}
/* Update the shadow RSS key with user specified */
memcpy(hw->rss_info.key, key, HNS3_RSS_KEY_SIZE);
return 0;
}
/*
* Used to configure the tuple selection for RSS hash input.
*/
static int
hns3_set_rss_input_tuple(struct hns3_hw *hw)
{
struct hns3_rss_conf *rss_config = &hw->rss_info;
struct hns3_rss_input_tuple_cmd *req;
struct hns3_cmd_desc desc_tuple;
int ret;
hns3_cmd_setup_basic_desc(&desc_tuple, HNS3_OPC_RSS_INPUT_TUPLE, false);
req = (struct hns3_rss_input_tuple_cmd *)desc_tuple.data;
req->ipv4_tcp_en = rss_config->rss_tuple_sets.ipv4_tcp_en;
req->ipv4_udp_en = rss_config->rss_tuple_sets.ipv4_udp_en;
req->ipv4_sctp_en = rss_config->rss_tuple_sets.ipv4_sctp_en;
req->ipv4_fragment_en = rss_config->rss_tuple_sets.ipv4_fragment_en;
req->ipv6_tcp_en = rss_config->rss_tuple_sets.ipv6_tcp_en;
req->ipv6_udp_en = rss_config->rss_tuple_sets.ipv6_udp_en;
req->ipv6_sctp_en = rss_config->rss_tuple_sets.ipv6_sctp_en;
req->ipv6_fragment_en = rss_config->rss_tuple_sets.ipv6_fragment_en;
ret = hns3_cmd_send(hw, &desc_tuple, 1);
if (ret)
hns3_err(hw, "Configure RSS input tuple mode failed %d", ret);
return ret;
}
/*
* rss_indirection_table command function, opcode:0x0D07.
* Used to configure the indirection table of rss.
*/
int
hns3_set_rss_indir_table(struct hns3_hw *hw, uint8_t *indir, uint16_t size)
{
struct hns3_rss_indirection_table_cmd *req;
struct hns3_cmd_desc desc;
int ret, i, j, num;
req = (struct hns3_rss_indirection_table_cmd *)desc.data;
for (i = 0; i < size / HNS3_RSS_CFG_TBL_SIZE; i++) {
hns3_cmd_setup_basic_desc(&desc, HNS3_OPC_RSS_INDIR_TABLE,
false);
req->start_table_index =
rte_cpu_to_le_16(i * HNS3_RSS_CFG_TBL_SIZE);
req->rss_set_bitmap = rte_cpu_to_le_16(HNS3_RSS_SET_BITMAP_MSK);
for (j = 0; j < HNS3_RSS_CFG_TBL_SIZE; j++) {
num = i * HNS3_RSS_CFG_TBL_SIZE + j;
req->rss_result[j] = indir[num];
}
ret = hns3_cmd_send(hw, &desc, 1);
if (ret) {
hns3_err(hw,
"Sets RSS indirection table failed %d size %u",
ret, size);
return ret;
}
}
/* Update redirection table of hw */
memcpy(hw->rss_info.rss_indirection_tbl, indir, HNS3_RSS_IND_TBL_SIZE);
return 0;
}
int
hns3_rss_reset_indir_table(struct hns3_hw *hw)
{
uint8_t *lut;
int ret;
lut = rte_zmalloc("hns3_rss_lut", HNS3_RSS_IND_TBL_SIZE, 0);
if (lut == NULL) {
hns3_err(hw, "No hns3_rss_lut memory can be allocated");
return -ENOMEM;
}
ret = hns3_set_rss_indir_table(hw, lut, HNS3_RSS_IND_TBL_SIZE);
if (ret)
hns3_err(hw, "RSS uninit indir table failed: %d", ret);
rte_free(lut);
return ret;
}
int
hns3_set_rss_tuple_by_rss_hf(struct hns3_hw *hw,
struct hns3_rss_tuple_cfg *tuple, uint64_t rss_hf)
{
struct hns3_rss_input_tuple_cmd *req;
struct hns3_cmd_desc desc;
uint32_t i;
int ret;
hns3_cmd_setup_basic_desc(&desc, HNS3_OPC_RSS_INPUT_TUPLE, false);
req = (struct hns3_rss_input_tuple_cmd *)desc.data;
/* Enable ipv4 or ipv6 tuple by flow type */
for (i = 0; i < RTE_ETH_FLOW_MAX; i++) {
switch (rss_hf & (1ULL << i)) {
case ETH_RSS_NONFRAG_IPV4_TCP:
req->ipv4_tcp_en = HNS3_RSS_INPUT_TUPLE_OTHER;
break;
case ETH_RSS_NONFRAG_IPV4_UDP:
req->ipv4_udp_en = HNS3_RSS_INPUT_TUPLE_OTHER;
break;
case ETH_RSS_NONFRAG_IPV4_SCTP:
req->ipv4_sctp_en = HNS3_RSS_INPUT_TUPLE_SCTP;
break;
case ETH_RSS_FRAG_IPV4:
req->ipv4_fragment_en |= HNS3_IP_FRAG_BIT_MASK;
break;
case ETH_RSS_NONFRAG_IPV4_OTHER:
req->ipv4_fragment_en |= HNS3_IP_OTHER_BIT_MASK;
break;
case ETH_RSS_NONFRAG_IPV6_TCP:
req->ipv6_tcp_en = HNS3_RSS_INPUT_TUPLE_OTHER;
break;
case ETH_RSS_NONFRAG_IPV6_UDP:
req->ipv6_udp_en = HNS3_RSS_INPUT_TUPLE_OTHER;
break;
case ETH_RSS_NONFRAG_IPV6_SCTP:
req->ipv6_sctp_en = HNS3_RSS_INPUT_TUPLE_SCTP;
break;
case ETH_RSS_FRAG_IPV6:
req->ipv6_fragment_en |= HNS3_IP_FRAG_BIT_MASK;
break;
case ETH_RSS_NONFRAG_IPV6_OTHER:
req->ipv6_fragment_en |= HNS3_IP_OTHER_BIT_MASK;
break;
default:
/*
* rss_hf doesn't include unsupported flow types
* because the API framework has checked it, and
* this branch will never go unless rss_hf is zero.
*/
break;
}
}
ret = hns3_cmd_send(hw, &desc, 1);
if (ret) {
hns3_err(hw, "Update RSS flow types tuples failed %d", ret);
return ret;
}
tuple->ipv4_tcp_en = req->ipv4_tcp_en;
tuple->ipv4_udp_en = req->ipv4_udp_en;
tuple->ipv4_sctp_en = req->ipv4_sctp_en;
tuple->ipv4_fragment_en = req->ipv4_fragment_en;
tuple->ipv6_tcp_en = req->ipv6_tcp_en;
tuple->ipv6_udp_en = req->ipv6_udp_en;
tuple->ipv6_sctp_en = req->ipv6_sctp_en;
tuple->ipv6_fragment_en = req->ipv6_fragment_en;
return 0;
}
/*
* Configure RSS hash protocols and hash key.
* @param dev
* Pointer to Ethernet device.
* @praram rss_conf
* The configuration select of rss key size and tuple flow_types.
* @return
* 0 on success, a negative errno value otherwise is set.
*/
int
hns3_dev_rss_hash_update(struct rte_eth_dev *dev,
struct rte_eth_rss_conf *rss_conf)
{
struct hns3_adapter *hns = dev->data->dev_private;
struct hns3_hw *hw = &hns->hw;
struct hns3_rss_tuple_cfg *tuple = &hw->rss_info.rss_tuple_sets;
struct hns3_rss_conf *rss_cfg = &hw->rss_info;
uint8_t key_len = rss_conf->rss_key_len;
uint64_t rss_hf = rss_conf->rss_hf;
uint8_t *key = rss_conf->rss_key;
int ret;
if (hw->rss_dis_flag)
return -EINVAL;
rte_spinlock_lock(&hw->lock);
ret = hns3_set_rss_tuple_by_rss_hf(hw, tuple, rss_hf);
if (ret)
goto conf_err;
if (rss_cfg->conf.types && rss_hf == 0) {
/* Disable RSS, reset indirection table by local variable */
ret = hns3_rss_reset_indir_table(hw);
if (ret)
goto conf_err;
} else if (rss_hf && rss_cfg->conf.types == 0) {
/* Enable RSS, restore indirection table by hw's config */
ret = hns3_set_rss_indir_table(hw, rss_cfg->rss_indirection_tbl,
HNS3_RSS_IND_TBL_SIZE);
if (ret)
goto conf_err;
}
/* Update supported flow types when set tuple success */
rss_cfg->conf.types = rss_hf;
if (key) {
if (key_len != HNS3_RSS_KEY_SIZE) {
hns3_err(hw, "The hash key len(%u) is invalid",
key_len);
ret = -EINVAL;
goto conf_err;
}
ret = hns3_set_rss_algo_key(hw, key);
if (ret)
goto conf_err;
}
rte_spinlock_unlock(&hw->lock);
return 0;
conf_err:
rte_spinlock_unlock(&hw->lock);
return ret;
}
/*
* Get rss key and rss_hf types set of RSS hash configuration.
* @param dev
* Pointer to Ethernet device.
* @praram rss_conf
* The buffer to get rss key size and tuple types.
* @return
* 0 on success.
*/
int
hns3_dev_rss_hash_conf_get(struct rte_eth_dev *dev,
struct rte_eth_rss_conf *rss_conf)
{
struct hns3_adapter *hns = dev->data->dev_private;
struct hns3_hw *hw = &hns->hw;
struct hns3_rss_conf *rss_cfg = &hw->rss_info;
rte_spinlock_lock(&hw->lock);
rss_conf->rss_hf = rss_cfg->conf.types;
/* Get the RSS Key required by the user */
if (rss_conf->rss_key && rss_conf->rss_key_len >= HNS3_RSS_KEY_SIZE) {
memcpy(rss_conf->rss_key, rss_cfg->key, HNS3_RSS_KEY_SIZE);
rss_conf->rss_key_len = HNS3_RSS_KEY_SIZE;
}
rte_spinlock_unlock(&hw->lock);
return 0;
}
/*
* Update rss redirection table of RSS.
* @param dev
* Pointer to Ethernet device.
* @praram reta_conf
* Pointer to the configuration select of mask and redirection tables.
* @param reta_size
* Redirection table size.
* @return
* 0 on success, a negative errno value otherwise is set.
*/
int
hns3_dev_rss_reta_update(struct rte_eth_dev *dev,
struct rte_eth_rss_reta_entry64 *reta_conf,
uint16_t reta_size)
{
struct hns3_adapter *hns = dev->data->dev_private;
struct hns3_hw *hw = &hns->hw;
struct hns3_rss_conf *rss_cfg = &hw->rss_info;
uint16_t i, indir_size = HNS3_RSS_IND_TBL_SIZE; /* Table size is 512 */
uint8_t indirection_tbl[HNS3_RSS_IND_TBL_SIZE];
uint16_t idx, shift, allow_rss_queues;
int ret;
if (reta_size != indir_size || reta_size > ETH_RSS_RETA_SIZE_512) {
hns3_err(hw, "The size of hash lookup table configured (%u)"
"doesn't match the number hardware can supported"
"(%u)", reta_size, indir_size);
return -EINVAL;
}
rte_spinlock_lock(&hw->lock);
memcpy(indirection_tbl, rss_cfg->rss_indirection_tbl,
HNS3_RSS_IND_TBL_SIZE);
allow_rss_queues = RTE_MIN(dev->data->nb_rx_queues, hw->rss_size_max);
for (i = 0; i < reta_size; i++) {
idx = i / RTE_RETA_GROUP_SIZE;
shift = i % RTE_RETA_GROUP_SIZE;
if (reta_conf[idx].reta[shift] >= allow_rss_queues) {
rte_spinlock_unlock(&hw->lock);
hns3_err(hw, "Invalid queue id(%u) to be set in "
"redirection table, max number of rss "
"queues: %u", reta_conf[idx].reta[shift],
allow_rss_queues);
return -EINVAL;
}
if (reta_conf[idx].mask & (1ULL << shift))
indirection_tbl[i] = reta_conf[idx].reta[shift];
}
ret = hns3_set_rss_indir_table(hw, indirection_tbl,
HNS3_RSS_IND_TBL_SIZE);
rte_spinlock_unlock(&hw->lock);
return ret;
}
/*
* Get rss redirection table of RSS hash configuration.
* @param dev
* Pointer to Ethernet device.
* @praram reta_conf
* Pointer to the configuration select of mask and redirection tables.
* @param reta_size
* Redirection table size.
* @return
* 0 on success, a negative errno value otherwise is set.
*/
int
hns3_dev_rss_reta_query(struct rte_eth_dev *dev,
struct rte_eth_rss_reta_entry64 *reta_conf,
uint16_t reta_size)
{
struct hns3_adapter *hns = dev->data->dev_private;
struct hns3_hw *hw = &hns->hw;
struct hns3_rss_conf *rss_cfg = &hw->rss_info;
uint16_t i, indir_size = HNS3_RSS_IND_TBL_SIZE; /* Table size is 512 */
uint16_t idx, shift;
if (reta_size != indir_size || reta_size > ETH_RSS_RETA_SIZE_512) {
hns3_err(hw, "The size of hash lookup table configured (%u)"
" doesn't match the number hardware can supported"
"(%u)", reta_size, indir_size);
return -EINVAL;
}
rte_spinlock_lock(&hw->lock);
for (i = 0; i < reta_size; i++) {
idx = i / RTE_RETA_GROUP_SIZE;
shift = i % RTE_RETA_GROUP_SIZE;
if (reta_conf[idx].mask & (1ULL << shift))
reta_conf[idx].reta[shift] =
rss_cfg->rss_indirection_tbl[i];
}
rte_spinlock_unlock(&hw->lock);
return 0;
}
/*
* Used to configure the tc_size and tc_offset.
*/
static int
hns3_set_rss_tc_mode(struct hns3_hw *hw)
{
uint16_t rss_size = hw->alloc_rss_size;
struct hns3_rss_tc_mode_cmd *req;
uint16_t tc_offset[HNS3_MAX_TC_NUM];
uint8_t tc_valid[HNS3_MAX_TC_NUM];
uint16_t tc_size[HNS3_MAX_TC_NUM];
struct hns3_cmd_desc desc;
uint16_t roundup_size;
uint16_t i;
int ret;
req = (struct hns3_rss_tc_mode_cmd *)desc.data;
roundup_size = roundup_pow_of_two(rss_size);
roundup_size = ilog2(roundup_size);
for (i = 0; i < HNS3_MAX_TC_NUM; i++) {
tc_valid[i] = !!(hw->hw_tc_map & BIT(i));
tc_size[i] = roundup_size;
tc_offset[i] = rss_size * i;
}
hns3_cmd_setup_basic_desc(&desc, HNS3_OPC_RSS_TC_MODE, false);
for (i = 0; i < HNS3_MAX_TC_NUM; i++) {
uint16_t mode = 0;
hns3_set_bit(mode, HNS3_RSS_TC_VALID_B, (tc_valid[i] & 0x1));
hns3_set_field(mode, HNS3_RSS_TC_SIZE_M, HNS3_RSS_TC_SIZE_S,
tc_size[i]);
hns3_set_field(mode, HNS3_RSS_TC_OFFSET_M, HNS3_RSS_TC_OFFSET_S,
tc_offset[i]);
req->rss_tc_mode[i] = rte_cpu_to_le_16(mode);
}
ret = hns3_cmd_send(hw, &desc, 1);
if (ret)
hns3_err(hw, "Sets rss tc mode failed %d", ret);
return ret;
}
static void
hns3_rss_tuple_uninit(struct hns3_hw *hw)
{
struct hns3_rss_input_tuple_cmd *req;
struct hns3_cmd_desc desc;
int ret;
hns3_cmd_setup_basic_desc(&desc, HNS3_OPC_RSS_INPUT_TUPLE, false);
req = (struct hns3_rss_input_tuple_cmd *)desc.data;
memset(req, 0, sizeof(struct hns3_rss_tuple_cfg));
ret = hns3_cmd_send(hw, &desc, 1);
if (ret) {
hns3_err(hw, "RSS uninit tuple failed %d", ret);
return;
}
}
/*
* Set the default rss configuration in the init of driver.
*/
void
hns3_set_default_rss_args(struct hns3_hw *hw)
{
struct hns3_rss_conf *rss_cfg = &hw->rss_info;
uint16_t queue_num = hw->alloc_rss_size;
int i;
/* Default hash algorithm */
rss_cfg->conf.func = RTE_ETH_HASH_FUNCTION_TOEPLITZ;
/* Default RSS key */
memcpy(rss_cfg->key, hns3_hash_key, HNS3_RSS_KEY_SIZE);
/* Initialize RSS indirection table */
for (i = 0; i < HNS3_RSS_IND_TBL_SIZE; i++)
rss_cfg->rss_indirection_tbl[i] = i % queue_num;
}
/*
* RSS initialization for hns3 pmd driver.
*/
int
hns3_config_rss(struct hns3_adapter *hns)
{
struct hns3_hw *hw = &hns->hw;
struct hns3_rss_conf *rss_cfg = &hw->rss_info;
uint8_t *hash_key = rss_cfg->key;
int ret, ret1;
enum rte_eth_rx_mq_mode mq_mode = hw->data->dev_conf.rxmode.mq_mode;
switch (hw->rss_info.conf.func) {
case RTE_ETH_HASH_FUNCTION_SIMPLE_XOR:
hw->rss_info.hash_algo = HNS3_RSS_HASH_ALGO_SIMPLE;
break;
case RTE_ETH_HASH_FUNCTION_SYMMETRIC_TOEPLITZ:
hw->rss_info.hash_algo = HNS3_RSS_HASH_ALGO_SYMMETRIC_TOEP;
break;
default:
hw->rss_info.hash_algo = HNS3_RSS_HASH_ALGO_TOEPLITZ;
break;
}
/* When RSS is off, redirect the packet queue 0 */
if (((uint32_t)mq_mode & ETH_MQ_RX_RSS_FLAG) == 0)
hns3_rss_uninit(hns);
/* Configure RSS hash algorithm and hash key offset */
ret = hns3_set_rss_algo_key(hw, hash_key);
if (ret)
return ret;
/* Configure the tuple selection for RSS hash input */
ret = hns3_set_rss_input_tuple(hw);
if (ret)
return ret;
/*
* When RSS is off, it doesn't need to configure rss redirection table
* to hardware.
*/
if (((uint32_t)mq_mode & ETH_MQ_RX_RSS_FLAG)) {
ret = hns3_set_rss_indir_table(hw, rss_cfg->rss_indirection_tbl,
HNS3_RSS_IND_TBL_SIZE);
if (ret)
goto rss_tuple_uninit;
}
ret = hns3_set_rss_tc_mode(hw);
if (ret)
goto rss_indir_table_uninit;
return ret;
rss_indir_table_uninit:
if (((uint32_t)mq_mode & ETH_MQ_RX_RSS_FLAG)) {
ret1 = hns3_rss_reset_indir_table(hw);
if (ret1 != 0)
return ret;
}
rss_tuple_uninit:
hns3_rss_tuple_uninit(hw);
/* Disable RSS */
hw->rss_info.conf.types = 0;
return ret;
}
/*
* RSS uninitialization for hns3 pmd driver.
*/
void
hns3_rss_uninit(struct hns3_adapter *hns)
{
struct hns3_hw *hw = &hns->hw;
int ret;
hns3_rss_tuple_uninit(hw);
ret = hns3_rss_reset_indir_table(hw);
if (ret != 0)
return;
/* Disable RSS */
hw->rss_info.conf.types = 0;
}