@@ -419,6 +419,12 @@ enum devlink_param_generic_id {
.validate = _validate, \
}
+enum devlink_version_type {
+ DEVLINK_VERSION_FIXED,
+ DEVLINK_VERSION_STORED,
+ DEVLINK_VERSION_RUNNING,
+};
+
struct devlink_region;
struct devlink_info_req;
@@ -590,6 +596,10 @@ int devlink_info_report_serial_number(struct devlink_info_req *req,
const char *sn);
int devlink_info_report_driver_name(struct devlink_info_req *req,
const char *name);
+int devlink_info_report_version(struct devlink_info_req *req,
+ enum devlink_version_type type,
+ const char *version_name,
+ const char *version_value);
#else
@@ -862,6 +872,14 @@ devlink_info_report_serial_number(struct devlink_info_req *req, const char *sn)
{
return 0;
}
+
+static inline int
+devlink_info_report_version(struct devlink_info_req *req,
+ enum devlink_version_type type,
+ const char *version_name, const char *version_value)
+{
+ return 0;
+}
#endif
#endif /* _NET_DEVLINK_H_ */
@@ -289,6 +289,11 @@ enum devlink_attr {
DEVLINK_ATTR_INFO_DRV_NAME, /* string */
DEVLINK_ATTR_INFO_SERIAL_NUMBER, /* string */
+ DEVLINK_ATTR_INFO_VERSION_FIXED, /* nested */
+ DEVLINK_ATTR_INFO_VERSION_RUNNING, /* nested */
+ DEVLINK_ATTR_INFO_VERSION_STORED, /* nested */
+ DEVLINK_ATTR_INFO_VERSION_NAME, /* string */
+ DEVLINK_ATTR_INFO_VERSION_VALUE, /* string */
/* add new attributes above here, update the policy in devlink.c */
@@ -3615,6 +3615,46 @@ int devlink_info_report_serial_number(struct devlink_info_req *req,
}
EXPORT_SYMBOL_GPL(devlink_info_report_serial_number);
+int devlink_info_report_version(struct devlink_info_req *req,
+ enum devlink_version_type type,
+ const char *version_name,
+ const char *version_value)
+{
+ static const enum devlink_attr type2attr[] = {
+ [DEVLINK_VERSION_FIXED] = DEVLINK_ATTR_INFO_VERSION_FIXED,
+ [DEVLINK_VERSION_STORED] = DEVLINK_ATTR_INFO_VERSION_STORED,
+ [DEVLINK_VERSION_RUNNING] = DEVLINK_ATTR_INFO_VERSION_RUNNING,
+ };
+ struct nlattr *nest;
+ int err;
+
+ if (type >= ARRAY_SIZE(type2attr) || !type2attr[type])
+ return -EINVAL;
+
+ nest = nla_nest_start(req->msg, type2attr[type]);
+ if (!nest)
+ return -EMSGSIZE;
+
+ err = nla_put_string(req->msg, DEVLINK_ATTR_INFO_VERSION_NAME,
+ version_name);
+ if (err)
+ goto nla_put_failure;
+
+ err = nla_put_string(req->msg, DEVLINK_ATTR_INFO_VERSION_VALUE,
+ version_value);
+ if (err)
+ goto nla_put_failure;
+
+ nla_nest_end(req->msg, nest);
+
+ return 0;
+
+nla_put_failure:
+ nla_nest_cancel(req->msg, nest);
+ return err;
+}
+EXPORT_SYMBOL_GPL(devlink_info_report_version);
+
static int
devlink_nl_info_fill(struct sk_buff *msg, struct devlink *devlink,
enum devlink_command cmd, u32 portid,
ethtool -i has a few fixed-size fields which can be used to report firmware version and expansion ROM version. Unfortunately, modern hardware has more firmware components. There is usually some datapath microcode, management controller, PXE drivers, and a CPLD load. Running ethtool -i on modern controllers reveals the fact that vendors cram multiple values into firmware version field. Here are some examples from systems I could lay my hands on quickly: tg3: "FFV20.2.17 bc 5720-v1.39" i40e: "6.01 0x800034a4 1.1747.0" nfp: "0.0.3.5 0.25 sriov-2.1.16 nic" Add a new devlink API to allow retrieving multiple versions, and provide user-readable name for those versions. While at it break down the versions into three categories: - fixed - this is the board/fixed component version, usually vendors report information like the board version in the PCI VPD, but it will benefit from naming and common API as well; - running - this is the running firmware version; - stored - this is firmware in the flash, after firmware update this value will reflect the flashed version, while the running version may only be updated after reboot. RFCv2: - remove the nesting in attr DEVLINK_ATTR_INFO_VERSIONS (now versions are mixed with other info attrs)l - have the driver report versions from the same callback as other info. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> --- include/net/devlink.h | 18 ++++++++++++++++ include/uapi/linux/devlink.h | 5 +++++ net/core/devlink.c | 40 ++++++++++++++++++++++++++++++++++++ 3 files changed, 63 insertions(+)