[patch net-next RFC 3/7] devlink: Add support for reload
From: Jiri Pirko <jiri@resnulli.us>
Date: 2017-10-24 09:22:50
Subsystem:
devlink, networking [general], the rest · Maintainers:
Jiri Pirko, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
From: Arkadi Sharshevsky <redacted> Add support for performing driver hot reload. Signed-off-by: Arkadi Sharshevsky <redacted> Signed-off-by: Jiri Pirko <redacted> --- 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