From: Jiaran Zhang zhangjiaran@huawei.com
mainline inclusion from mainline-master commit 7b07ab06e6b00b4421a4dfd732e98b359e0bad91 category: feature bugzilla: 173966 CVE: NA
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?i...
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Currently, the debugfs command for dump mac tnl status is implemented by "echo xxxx > cmd", and record the information in dmesg. It's unnecessary and heavy. To improve it, create a single file "mac_tnl_status" for it, and query it by command "cat mac_tnl_status", return the result to userspace, rather than record in dmesg.
The display style is below: $ cat mac_tnl_status Recently generated mac tnl interruption: [0111204.175437] status = 0x30 [0154120.329912] status = 0x30
Signed-off-by: Jiaran Zhang zhangjiaran@huawei.com Signed-off-by: Huazhong Tan tanhuazhong@huawei.com Signed-off-by: David S. Miller davem@davemloft.net Reviewed-by: Yongxin Li liyongxin1@huawei.com Signed-off-by: Junxin Chen chenjunxin1@huawei.com Signed-off-by: Zheng Zengkai zhengzengkai@huawei.com --- drivers/net/ethernet/hisilicon/hns3/hnae3.h | 1 + .../ethernet/hisilicon/hns3/hns3_debugfs.c | 12 ++++++---- .../hisilicon/hns3/hns3pf/hclge_debugfs.c | 23 +++++++++++++------ 3 files changed, 24 insertions(+), 12 deletions(-)
diff --git a/drivers/net/ethernet/hisilicon/hns3/hnae3.h b/drivers/net/ethernet/hisilicon/hns3/hnae3.h index 1fd35e1a1976..49817f3a8bf3 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hnae3.h +++ b/drivers/net/ethernet/hisilicon/hns3/hnae3.h @@ -286,6 +286,7 @@ enum hnae3_dbg_cmd { HNAE3_DBG_CMD_RX_QUEUE_INFO, HNAE3_DBG_CMD_TX_QUEUE_INFO, HNAE3_DBG_CMD_FD_TCAM, + HNAE3_DBG_CMD_MAC_TNL_STATUS, 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 599b405e754d..04c19a0c0e39 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c @@ -190,6 +190,13 @@ static struct hns3_dbg_cmd_info hns3_dbg_cmd[] = { .buf_len = HNS3_DBG_READ_LEN_128KB, .init = hns3_dbg_common_file_init, }, + { + .name = "mac_tnl_status", + .cmd = HNAE3_DBG_CMD_MAC_TNL_STATUS, + .dentry = HNS3_DBG_DENTRY_COMMON, + .buf_len = HNS3_DBG_READ_LEN, + .init = hns3_dbg_common_file_init, + }, { .name = "bios_common", .cmd = HNAE3_DBG_CMD_REG_BIOS_COMMON, @@ -762,11 +769,6 @@ static int hns3_dbg_tx_bd_info(struct hns3_dbg_data *d, char *buf, int len) static void hns3_dbg_help(struct hnae3_handle *h) { dev_info(&h->pdev->dev, "available commands\n"); - - if (!hns3_is_phys_func(h->pdev)) - return; - - dev_info(&h->pdev->dev, "dump mac tnl status\n"); }
static void diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c index 2b7acf620739..fe7ceab85459 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c @@ -1807,21 +1807,28 @@ static int hclge_dbg_dump_loopback(struct hclge_dev *hdev, char *buf, int len) /* hclge_dbg_dump_mac_tnl_status: print message about mac tnl interrupt * @hdev: pointer to struct hclge_dev */ -static void hclge_dbg_dump_mac_tnl_status(struct hclge_dev *hdev) +static int +hclge_dbg_dump_mac_tnl_status(struct hclge_dev *hdev, char *buf, int len) { #define HCLGE_BILLION_NANO_SECONDS 1000000000
struct hclge_mac_tnl_stats stats; unsigned long rem_nsec; + int pos = 0;
- dev_info(&hdev->pdev->dev, "Recently generated mac tnl interruption:\n"); + pos += scnprintf(buf + pos, len - pos, + "Recently generated mac tnl interruption:\n");
while (kfifo_get(&hdev->mac_tnl_log, &stats)) { rem_nsec = do_div(stats.time, HCLGE_BILLION_NANO_SECONDS); - dev_info(&hdev->pdev->dev, "[%07lu.%03lu] status = 0x%x\n", - (unsigned long)stats.time, rem_nsec / 1000, - stats.status); + + pos += scnprintf(buf + pos, len - pos, + "[%07lu.%03lu] status = 0x%x\n", + (unsigned long)stats.time, rem_nsec / 1000, + stats.status); } + + return 0; }
@@ -1895,8 +1902,6 @@ int hclge_dbg_run_cmd(struct hnae3_handle *handle, const char *cmd_buf)
if (strncmp(cmd_buf, "dump serv info", 14) == 0) { hclge_dbg_dump_serv_info(hdev); - } else if (strncmp(cmd_buf, "dump mac tnl status", 19) == 0) { - hclge_dbg_dump_mac_tnl_status(hdev); } else { dev_info(&hdev->pdev->dev, "unknown command\n"); return -EINVAL; @@ -2026,6 +2031,10 @@ static const struct hclge_dbg_func hclge_dbg_cmd_func[] = { .cmd = HNAE3_DBG_CMD_FD_TCAM, .dbg_dump = hclge_dbg_dump_fd_tcam, }, + { + .cmd = HNAE3_DBG_CMD_MAC_TNL_STATUS, + .dbg_dump = hclge_dbg_dump_mac_tnl_status, + }, };
int hclge_dbg_read_cmd(struct hnae3_handle *handle, enum hnae3_dbg_cmd cmd,