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net: hns3: add support to query tx spare buffer size for pf

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Add support to query tx spare buffer size from configuration
file, and use this info to do spare buffer initialization when
the module parameter 'tx_spare_buf_size' is not specified.

Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Huazhong Tan 2021-06-16 14:36:14 +08:00 committed by David S. Miller
parent 907676b130
commit 1a00197b7d
5 changed files with 24 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/net/ethernet/hisilicon/hns3/hnae3.h
View File

@ -760,6 +760,7 @@ struct hnae3_knic_private_info {
u16 rx_buf_len;
u16 num_tx_desc;
u16 num_rx_desc;
u32 tx_spare_buf_size;
struct hnae3_tc_info tc_info;

7
drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
View File

@ -1005,13 +1005,16 @@ static void hns3_init_tx_spare_buffer(struct hns3_enet_ring *ring)
{
struct hns3_tx_spare *tx_spare;
struct page *page;
u32 alloc_size;
dma_addr_t dma;
int order;
if (!tx_spare_buf_size)
alloc_size = tx_spare_buf_size ? tx_spare_buf_size :
ring->tqp->handle->kinfo.tx_spare_buf_size;
if (!alloc_size)
return;
order = get_order(tx_spare_buf_size);
order = get_order(alloc_size);
tx_spare = devm_kzalloc(ring_to_dev(ring), sizeof(*tx_spare),
GFP_KERNEL);
if (!tx_spare) {

2
drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.h
View File

@ -542,6 +542,8 @@ struct hclge_pf_res_cmd {
#define HCLGE_CFG_UMV_TBL_SPACE_M GENMASK(31, 16)
#define HCLGE_CFG_PF_RSS_SIZE_S 0
#define HCLGE_CFG_PF_RSS_SIZE_M GENMASK(3, 0)
#define HCLGE_CFG_TX_SPARE_BUF_SIZE_S 4
#define HCLGE_CFG_TX_SPARE_BUF_SIZE_M GENMASK(15, 4)
#define HCLGE_CFG_CMD_CNT 4

14
drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
View File

@ -1279,6 +1279,7 @@ static u32 hclge_get_max_speed(u16 speed_ability)
static void hclge_parse_cfg(struct hclge_cfg *cfg, struct hclge_desc *desc)
{
#define HCLGE_TX_SPARE_SIZE_UNIT 4096
#define SPEED_ABILITY_EXT_SHIFT 8
struct hclge_cfg_param_cmd *req;
@ -1358,6 +1359,15 @@ static void hclge_parse_cfg(struct hclge_cfg *cfg, struct hclge_desc *desc)
cfg->pf_rss_size_max = cfg->pf_rss_size_max ?
1U << cfg->pf_rss_size_max :
cfg->vf_rss_size_max;
/* The unit of the tx spare buffer size queried from configuration
* file is HCLGE_TX_SPARE_SIZE_UNIT(4096) bytes, so a conversion is
* needed here.
*/
cfg->tx_spare_buf_size = hnae3_get_field(__le32_to_cpu(req->param[2]),
HCLGE_CFG_TX_SPARE_BUF_SIZE_M,
HCLGE_CFG_TX_SPARE_BUF_SIZE_S);
cfg->tx_spare_buf_size *= HCLGE_TX_SPARE_SIZE_UNIT;
}
/* hclge_get_cfg: query the static parameter from flash
@ -1539,6 +1549,7 @@ static int hclge_configure(struct hclge_dev *hdev)
hdev->tc_max = cfg.tc_num;
hdev->tm_info.hw_pfc_map = 0;
hdev->wanted_umv_size = cfg.umv_space;
hdev->tx_spare_buf_size = cfg.tx_spare_buf_size;
if (cfg.vlan_fliter_cap == HCLGE_VLAN_FLTR_CAN_MDF)
set_bit(HNAE3_DEV_SUPPORT_VLAN_FLTR_MDF_B, ae_dev->caps);
@ -1736,6 +1747,7 @@ static int hclge_knic_setup(struct hclge_vport *vport, u16 num_tqps,
kinfo->num_rx_desc = num_rx_desc;
kinfo->rx_buf_len = hdev->rx_buf_len;
kinfo->tx_spare_buf_size = hdev->tx_spare_buf_size;
kinfo->tqp = devm_kcalloc(&hdev->pdev->dev, num_tqps,
sizeof(struct hnae3_queue *), GFP_KERNEL);
@ -11059,6 +11071,8 @@ static void hclge_info_show(struct hclge_dev *hdev)
hdev->flag & HCLGE_FLAG_DCB_ENABLE ? "enable" : "disable");
dev_info(dev, "MQPRIO %s\n",
hdev->flag & HCLGE_FLAG_MQPRIO_ENABLE ? "enable" : "disable");
dev_info(dev, "Default tx spare buffer size: %u\n",
hdev->tx_spare_buf_size);
dev_info(dev, "PF info end.\n");
}

2
drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h
View File

@ -384,6 +384,7 @@ struct hclge_cfg {
u8 mac_addr[ETH_ALEN];
u8 default_speed;
u32 numa_node_map;
u32 tx_spare_buf_size;
u16 speed_ability;
u16 umv_space;
};
@ -848,6 +849,7 @@ struct hclge_dev {
u16 alloc_rss_size; /* Allocated RSS task queue */
u16 vf_rss_size_max; /* HW defined VF max RSS task queue */
u16 pf_rss_size_max; /* HW defined PF max RSS task queue */
u32 tx_spare_buf_size; /* HW defined TX spare buffer size */
u16 fdir_pf_filter_count; /* Num of guaranteed filters for this PF */
u16 num_alloc_vport; /* Num vports this driver supports */