From: Arkadi Sharshevsky <arka...@mellanox.com>
Add support for performing driver hot reload.
Signed-off-by: Arkadi Sharshevsky <arka...@mellanox.com>
Signed-off-by: Jiri Pirko <j...@mellanox.com>
---
include/net/devlink.h | 1 +
include/uapi/linux/devlink.h | 1 +
net/core/devlink.c | 18 ++++++++++++++++++
3 files changed, 20 insertions(+)
diff --git a/include/net/devlink.h b/include/net/devlink.h
index 789e606..ff6e384 100644
--- a/include/net/devlink.h
+++ b/include/net/devlink.h
@@ -263,6 +263,7 @@ struct devlink_resource {
#define DEVLINK_RESOURCE_ID_PARENT_TOP 0
struct devlink_ops {
+ int (*reload)(struct devlink *devlink);
int (*port_type_set)(struct devlink_port *devlink_port,
enum devlink_port_type port_type);
int (*port_split)(struct devlink *devlink, unsigned int port_index,
diff --git a/include/uapi/linux/devlink.h b/include/uapi/linux/devlink.h
index 9db1d70..86a329a 100644
--- a/include/uapi/linux/devlink.h
+++ b/include/uapi/linux/devlink.h
@@ -71,6 +71,7 @@ enum devlink_command {
DEVLINK_CMD_DPIPE_TABLE_COUNTERS_SET,
DEVLINK_CMD_RESOURCE_SET,
DEVLINK_CMD_RESOURCE_DUMP,
+ DEVLINK_CMD_RELOAD,
/* add new commands above here */
__DEVLINK_CMD_MAX,
diff --git a/net/core/devlink.c b/net/core/devlink.c
index 86dfec9..3a9fcda 100644
--- a/net/core/devlink.c
+++ b/net/core/devlink.c
@@ -2484,6 +2484,16 @@ static int devlink_nl_cmd_resource_dump(struct sk_buff
*skb,
return devlink_resource_fill(info, DEVLINK_CMD_RESOURCE_DUMP, 0);
}
+static int devlink_nl_cmd_reload(struct sk_buff *skb, struct genl_info *info)
+{
+ struct devlink *devlink = info->user_ptr[0];
+
+ if (!devlink->ops->reload)
+ return -EOPNOTSUPP;
+
+ return devlink->ops->reload(devlink);
+}
+
static const struct nla_policy devlink_nl_policy[DEVLINK_ATTR_MAX + 1] = {
[DEVLINK_ATTR_BUS_NAME] = { .type = NLA_NUL_STRING },
[DEVLINK_ATTR_DEV_NAME] = { .type = NLA_NUL_STRING },
@@ -2676,6 +2686,14 @@ static const struct genl_ops devlink_nl_ops[] = {
.flags = GENL_ADMIN_PERM,
.internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK,
},
+ {
+ .cmd = DEVLINK_CMD_RELOAD,
+ .doit = devlink_nl_cmd_reload,
+ .policy = devlink_nl_policy,
+ .flags = GENL_ADMIN_PERM,
+ .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK |
+ DEVLINK_NL_FLAG_NO_LOCK,
+ },
};
static struct genl_family devlink_nl_family __ro_after_init = {
--
2.9.5
