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// SPDX-License-Identifier: GPL-2.0+
// Copyright (c) 2021-2021 Hisilicon Limited.
#include <linux/skbuff.h>
#include "hnae3.h"
#include "hclge_comm_rss.h"
u32 hclge_comm_get_rss_key_size(struct hnae3_handle *handle)
{
return HCLGE_COMM_RSS_KEY_SIZE;
}
void hclge_comm_get_rss_type(struct hnae3_handle *nic,
struct hclge_comm_rss_tuple_cfg *rss_tuple_sets)
{
if (rss_tuple_sets->ipv4_tcp_en ||
rss_tuple_sets->ipv4_udp_en ||
rss_tuple_sets->ipv4_sctp_en ||
rss_tuple_sets->ipv6_tcp_en ||
rss_tuple_sets->ipv6_udp_en ||
rss_tuple_sets->ipv6_sctp_en)
nic->kinfo.rss_type = PKT_HASH_TYPE_L4;
else if (rss_tuple_sets->ipv4_fragment_en ||
rss_tuple_sets->ipv6_fragment_en)
nic->kinfo.rss_type = PKT_HASH_TYPE_L3;
else
nic->kinfo.rss_type = PKT_HASH_TYPE_NONE;
}
int hclge_comm_parse_rss_hfunc(struct hclge_comm_rss_cfg *rss_cfg,
const u8 hfunc, u8 *hash_algo)
{
switch (hfunc) {
case ETH_RSS_HASH_TOP:
*hash_algo = HCLGE_COMM_RSS_HASH_ALGO_TOEPLITZ;
return 0;
case ETH_RSS_HASH_XOR:
*hash_algo = HCLGE_COMM_RSS_HASH_ALGO_SIMPLE;
return 0;
case ETH_RSS_HASH_NO_CHANGE:
*hash_algo = rss_cfg->rss_algo;
return 0;
default:
return -EINVAL;
}
}
void hclge_comm_rss_indir_init_cfg(struct hnae3_ae_dev *ae_dev,
struct hclge_comm_rss_cfg *rss_cfg)
{
u16 i;
/* Initialize RSS indirect table */
for (i = 0; i < ae_dev->dev_specs.rss_ind_tbl_size; i++)
rss_cfg->rss_indirection_tbl[i] = i % rss_cfg->rss_size;
}
int hclge_comm_get_rss_tuple(struct hclge_comm_rss_cfg *rss_cfg, int flow_type,
u8 *tuple_sets)
{
switch (flow_type) {
case TCP_V4_FLOW:
*tuple_sets = rss_cfg->rss_tuple_sets.ipv4_tcp_en;
break;
case UDP_V4_FLOW:
*tuple_sets = rss_cfg->rss_tuple_sets.ipv4_udp_en;
break;
case TCP_V6_FLOW:
*tuple_sets = rss_cfg->rss_tuple_sets.ipv6_tcp_en;
break;
case UDP_V6_FLOW:
*tuple_sets = rss_cfg->rss_tuple_sets.ipv6_udp_en;
break;
case SCTP_V4_FLOW:
*tuple_sets = rss_cfg->rss_tuple_sets.ipv4_sctp_en;
break;
case SCTP_V6_FLOW:
*tuple_sets = rss_cfg->rss_tuple_sets.ipv6_sctp_en;
break;
case IPV4_FLOW:
case IPV6_FLOW:
*tuple_sets = HCLGE_COMM_S_IP_BIT | HCLGE_COMM_D_IP_BIT;
break;
default:
return -EINVAL;
}
return 0;
}
void hclge_comm_get_rss_hash_info(struct hclge_comm_rss_cfg *rss_cfg, u8 *key,
u8 *hfunc)
{
/* Get hash algorithm */
if (hfunc) {
switch (rss_cfg->rss_algo) {
case HCLGE_COMM_RSS_HASH_ALGO_TOEPLITZ:
*hfunc = ETH_RSS_HASH_TOP;
break;
case HCLGE_COMM_RSS_HASH_ALGO_SIMPLE:
*hfunc = ETH_RSS_HASH_XOR;
break;
default:
*hfunc = ETH_RSS_HASH_UNKNOWN;
break;
}
}
/* Get the RSS Key required by the user */
if (key)
memcpy(key, rss_cfg->rss_hash_key, HCLGE_COMM_RSS_KEY_SIZE);
}
void hclge_comm_get_rss_indir_tbl(struct hclge_comm_rss_cfg *rss_cfg,
u32 *indir, u16 rss_ind_tbl_size)
{
u16 i;
if (!indir)
return;
for (i = 0; i < rss_ind_tbl_size; i++)
indir[i] = rss_cfg->rss_indirection_tbl[i];
}
u8 hclge_comm_get_rss_hash_bits(struct ethtool_rxnfc *nfc)
{
u8 hash_sets = nfc->data & RXH_L4_B_0_1 ? HCLGE_COMM_S_PORT_BIT : 0;
if (nfc->data & RXH_L4_B_2_3)
hash_sets |= HCLGE_COMM_D_PORT_BIT;
else
hash_sets &= ~HCLGE_COMM_D_PORT_BIT;
if (nfc->data & RXH_IP_SRC)
hash_sets |= HCLGE_COMM_S_IP_BIT;
else
hash_sets &= ~HCLGE_COMM_S_IP_BIT;
if (nfc->data & RXH_IP_DST)
hash_sets |= HCLGE_COMM_D_IP_BIT;
else
hash_sets &= ~HCLGE_COMM_D_IP_BIT;
if (nfc->flow_type == SCTP_V4_FLOW || nfc->flow_type == SCTP_V6_FLOW)
hash_sets |= HCLGE_COMM_V_TAG_BIT;
return hash_sets;
}
u64 hclge_comm_convert_rss_tuple(u8 tuple_sets)
{
u64 tuple_data = 0;
if (tuple_sets & HCLGE_COMM_D_PORT_BIT)
tuple_data |= RXH_L4_B_2_3;
if (tuple_sets & HCLGE_COMM_S_PORT_BIT)
tuple_data |= RXH_L4_B_0_1;
if (tuple_sets & HCLGE_COMM_D_IP_BIT)
tuple_data |= RXH_IP_DST;
if (tuple_sets & HCLGE_COMM_S_IP_BIT)
tuple_data |= RXH_IP_SRC;
return tuple_data;
}
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