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| author |   Arkadi Sharshevsky <arkadis@mellanox.com> | 2018-01-15 08:59:04 +0100 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2018-01-16 14:15:34 -0500 |
| commit | 2d8dc5bbf4e7603747875eb5cadcd67c1fa8b1bb (patch) | |
| tree | f47537503b83bd112c2530176ca7321ffe0f81d9 /net/core/devlink.c | |
| parent | devlink: Add support for resource abstraction (diff) | |
| download | linux-dev-2d8dc5bbf4e7603747875eb5cadcd67c1fa8b1bb.tar.xz linux-dev-2d8dc5bbf4e7603747875eb5cadcd67c1fa8b1bb.zip | |
devlink: Add support for reload
Add support for performing driver hot reload.
Signed-off-by: Arkadi Sharshevsky <arkadis@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/devlink.c')
| -rw-r--r-- | net/core/devlink.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/net/core/devlink.c b/net/core/devlink.c index 89b3704fa450..4c3d85560436 100644 --- a/net/core/devlink.c +++ b/net/core/devlink.c @@ -2515,6 +2515,45 @@ static int devlink_nl_cmd_resource_dump(struct sk_buff *skb, return devlink_resource_fill(info, DEVLINK_CMD_RESOURCE_DUMP, 0); } +static int +devlink_resources_validate(struct devlink *devlink, + struct devlink_resource *resource, + struct genl_info *info) +{ + struct list_head *resource_list; + int err = 0; + + if (resource) + resource_list = &resource->resource_list; + else + resource_list = &devlink->resource_list; + + list_for_each_entry(resource, resource_list, list) { + if (!resource->size_valid) + return -EINVAL; + err = devlink_resources_validate(devlink, resource, info); + if (err) + return err; + } + return err; +} + +static int devlink_nl_cmd_reload(struct sk_buff *skb, struct genl_info *info) +{ + struct devlink *devlink = info->user_ptr[0]; + int err; + + if (!devlink->ops->reload) + return -EOPNOTSUPP; + + err = devlink_resources_validate(devlink, NULL, info); + if (err) { + NL_SET_ERR_MSG_MOD(info->extack, "resources size validation failed"); + return err; + } + 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 }, @@ -2709,6 +2748,14 @@ 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 = { |