net: hns3: debugfs add support dumping page pool info

Add a file node "page_pool_info" for debugfs, then cat this
file node to dump page pool info as below:

QUEUE_ID  ALLOCATE_CNT  FREE_CNT      POOL_SIZE(PAGE_NUM)  ORDER  NUMA_ID  MAX_LEN
0         512           0             512                  0      2        4K
1         512           0             512                  0      2        4K
2         512           0             512                  0      2        4K
3         512           0             512                  0      2        4K
4         512           0             512                  0      2        4K

Signed-off-by: Hao Chen <chenhao288@hisilicon.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/hisilicon/hns3/hnae3.h b/drivers/net/ethernet/hisilicon/hns3/hnae3.h
index 17872c5..5d18857 100644 (file)
--- a/drivers/net/ethernet/hisilicon/hns3/hnae3.h
+++ b/drivers/net/ethernet/hisilicon/hns3/hnae3.h
@@ -298,6 +298,7 @@ enum hnae3_dbg_cmd {
        HNAE3_DBG_CMD_MAC_TNL_STATUS,
        HNAE3_DBG_CMD_SERV_INFO,
        HNAE3_DBG_CMD_UMV_INFO,
+       HNAE3_DBG_CMD_PAGE_POOL_INFO,
        HNAE3_DBG_CMD_UNKNOWN,
 };
 

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c b/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c
index a1555f0..b26d43c 100644 (file)
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c
@@ -336,6 +336,13 @@ static struct hns3_dbg_cmd_info hns3_dbg_cmd[] = {
                .buf_len = HNS3_DBG_READ_LEN,
                .init = hns3_dbg_common_file_init,
        },
+       {
+               .name = "page_pool_info",
+               .cmd = HNAE3_DBG_CMD_PAGE_POOL_INFO,
+               .dentry = HNS3_DBG_DENTRY_COMMON,
+               .buf_len = HNS3_DBG_READ_LEN,
+               .init = hns3_dbg_common_file_init,
+       },
 };
 
 static struct hns3_dbg_cap_info hns3_dbg_cap[] = {
@@ -941,6 +948,69 @@ static int hns3_dbg_dev_info(struct hnae3_handle *h, char *buf, int len)
        return 0;
 }
 
+static const struct hns3_dbg_item page_pool_info_items[] = {
+       { "QUEUE_ID", 2 },
+       { "ALLOCATE_CNT", 2 },
+       { "FREE_CNT", 6 },
+       { "POOL_SIZE(PAGE_NUM)", 2 },
+       { "ORDER", 2 },
+       { "NUMA_ID", 2 },
+       { "MAX_LEN", 2 },
+};
+
+static void hns3_dump_page_pool_info(struct hns3_enet_ring *ring,
+                                    char **result, u32 index)
+{
+       u32 j = 0;
+
+       sprintf(result[j++], "%u", index);
+       sprintf(result[j++], "%u", ring->page_pool->pages_state_hold_cnt);
+       sprintf(result[j++], "%u",
+               atomic_read(&ring->page_pool->pages_state_release_cnt));
+       sprintf(result[j++], "%u", ring->page_pool->p.pool_size);
+       sprintf(result[j++], "%u", ring->page_pool->p.order);
+       sprintf(result[j++], "%d", ring->page_pool->p.nid);
+       sprintf(result[j++], "%uK", ring->page_pool->p.max_len / 1024);
+}
+
+static int
+hns3_dbg_page_pool_info(struct hnae3_handle *h, char *buf, int len)
+{
+       char data_str[ARRAY_SIZE(page_pool_info_items)][HNS3_DBG_DATA_STR_LEN];
+       char *result[ARRAY_SIZE(page_pool_info_items)];
+       struct hns3_nic_priv *priv = h->priv;
+       char content[HNS3_DBG_INFO_LEN];
+       struct hns3_enet_ring *ring;
+       int pos = 0;
+       u32 i;
+
+       if (!priv->ring) {
+               dev_err(&h->pdev->dev, "priv->ring is NULL\n");
+               return -EFAULT;
+       }
+
+       for (i = 0; i < ARRAY_SIZE(page_pool_info_items); i++)
+               result[i] = &data_str[i][0];
+
+       hns3_dbg_fill_content(content, sizeof(content), page_pool_info_items,
+                             NULL, ARRAY_SIZE(page_pool_info_items));
+       pos += scnprintf(buf + pos, len - pos, "%s", content);
+       for (i = 0; i < h->kinfo.num_tqps; i++) {
+               if (!test_bit(HNS3_NIC_STATE_INITED, &priv->state) ||
+                   test_bit(HNS3_NIC_STATE_RESETTING, &priv->state))
+                       return -EPERM;
+               ring = &priv->ring[(u32)(i + h->kinfo.num_tqps)];
+               hns3_dump_page_pool_info(ring, result, i);
+               hns3_dbg_fill_content(content, sizeof(content),
+                                     page_pool_info_items,
+                                     (const char **)result,
+                                     ARRAY_SIZE(page_pool_info_items));
+               pos += scnprintf(buf + pos, len - pos, "%s", content);
+       }
+
+       return 0;
+}
+
 static int hns3_dbg_get_cmd_index(struct hns3_dbg_data *dbg_data, u32 *index)
 {
        u32 i;
@@ -982,6 +1052,10 @@ static const struct hns3_dbg_func hns3_dbg_cmd_func[] = {
                .cmd = HNAE3_DBG_CMD_TX_QUEUE_INFO,
                .dbg_dump = hns3_dbg_tx_queue_info,
        },
+       {
+               .cmd = HNAE3_DBG_CMD_PAGE_POOL_INFO,
+               .dbg_dump = hns3_dbg_page_pool_info,
+       },
 };
 
 static int hns3_dbg_read_cmd(struct hns3_dbg_data *dbg_data,