devlink: Add board.serial_number to info subcommand.

Add support for reading board serial_number to devlink info
subcommand. Example:

$ devlink dev info pci/0000:af:00.0 -jp
{
    "info": {
        "pci/0000:af:00.0": {
            "driver": "bnxt_en",
            "serial_number": "00-10-18-FF-FE-AD-1A-00",
            "board.serial_number": "433551F+172300000",
            "versions": {
                "fixed": {
                    "board.id": "7339763 Rev 0.",
                    "asic.id": "16D7",
                    "asic.rev": "1"
                },
                "running": {
                    "fw": "216.1.216.0",
                    "fw.psid": "0.0.0",
                    "fw.mgmt": "216.1.192.0",
                    "fw.mgmt.api": "1.10.1",
                    "fw.ncsi": "0.0.0.0",
                    "fw.roce": "216.1.16.0"
                }
            }
        }
    }
}

Signed-off-by: Vasundhara Volam <vasundhara-v.volam@broadcom.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David Ahern <dsahern@kernel.org>

diff --git a/devlink/devlink.c b/devlink/devlink.c
index a22e931e1f5c32a204b403a09f97fead5a24191c..b3b4ab0ca1743282e5f6924e2422ca4d10d70b04 100644 (file)
--- a/devlink/devlink.c
+++ b/devlink/devlink.c
@@ -650,6 +650,7 @@ static const enum mnl_attr_data_type devlink_policy[DEVLINK_ATTR_MAX + 1] = {
        [DEVLINK_ATTR_REGION_CHUNK_LEN] = MNL_TYPE_U64,
        [DEVLINK_ATTR_INFO_DRIVER_NAME] = MNL_TYPE_STRING,
        [DEVLINK_ATTR_INFO_SERIAL_NUMBER] = MNL_TYPE_STRING,
+       [DEVLINK_ATTR_INFO_BOARD_SERIAL_NUMBER] = MNL_TYPE_STRING,
        [DEVLINK_ATTR_INFO_VERSION_FIXED] = MNL_TYPE_NESTED,
        [DEVLINK_ATTR_INFO_VERSION_RUNNING] = MNL_TYPE_NESTED,
        [DEVLINK_ATTR_INFO_VERSION_STORED] = MNL_TYPE_NESTED,
@@ -2981,6 +2982,16 @@ static void pr_out_info(struct dl *dl, const struct nlmsghdr *nlh,
                print_string(PRINT_ANY, "serial_number", "serial_number %s",
                             mnl_attr_get_str(nla_sn));
        }
+
+       if (tb[DEVLINK_ATTR_INFO_BOARD_SERIAL_NUMBER]) {
+               struct nlattr *nla_bsn = tb[DEVLINK_ATTR_INFO_BOARD_SERIAL_NUMBER];
+
+               if (!dl->json_output)
+                       __pr_out_newline();
+               check_indent_newline(dl);
+               print_string(PRINT_ANY, "board.serial_number", "board.serial_number %s",
+                            mnl_attr_get_str(nla_bsn));
+       }
        __pr_out_indent_dec();
 
        if (has_versions) {
@@ -3016,6 +3027,7 @@ static int cmd_versions_show_cb(const struct nlmsghdr *nlh, void *data)
                tb[DEVLINK_ATTR_INFO_VERSION_STORED];
        has_info = tb[DEVLINK_ATTR_INFO_DRIVER_NAME] ||
                tb[DEVLINK_ATTR_INFO_SERIAL_NUMBER] ||
+               tb[DEVLINK_ATTR_INFO_BOARD_SERIAL_NUMBER] ||
                has_versions;
 
        if (has_info)