diff options
| author |   Jiri Pirko <jiri@nvidia.com> | 2022-07-29 09:10:36 +0200 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2022-08-01 12:14:00 +0100 |
| commit | 644a66c60f02f302d82c3008ae2ffe67cf495383 (patch) | |
| tree | 4e691ef6ca0960f391c485bc976b4a553407b7ad /net/core/devlink.c | |
| parent | net: devlink: introduce "unregistering" mark and use it during devlinks iteration (diff) | |
| download | linux-dev-644a66c60f02f302d82c3008ae2ffe67cf495383.tar.xz linux-dev-644a66c60f02f302d82c3008ae2ffe67cf495383.zip | |
net: devlink: convert reload command to take implicit devlink->lock
Convert reload command to behave the same way as the rest of the
commands and let if be called with devlink->lock held. Remove the
temporary devl_lock taking from drivers. As the DEVLINK_NL_FLAG_NO_LOCK
flag is no longer used, remove it alongside.
Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/devlink.c')
| -rw-r--r-- | net/core/devlink.c | 18 |
1 files changed, 5 insertions, 13 deletions
diff --git a/net/core/devlink.c b/net/core/devlink.c index 6b20196ada1a..57865b231364 100644 --- a/net/core/devlink.c +++ b/net/core/devlink.c @@ -768,12 +768,6 @@ devlink_region_snapshot_get_by_id(struct devlink_region *region, u32 id) #define DEVLINK_NL_FLAG_NEED_RATE_NODE BIT(3) #define DEVLINK_NL_FLAG_NEED_LINECARD BIT(4) -/* The per devlink instance lock is taken by default in the pre-doit - * operation, yet several commands do not require this. The global - * devlink lock is taken and protects from disruption by user-calls. - */ -#define DEVLINK_NL_FLAG_NO_LOCK BIT(5) - static int devlink_nl_pre_doit(const struct genl_ops *ops, struct sk_buff *skb, struct genl_info *info) { @@ -788,8 +782,7 @@ static int devlink_nl_pre_doit(const struct genl_ops *ops, mutex_unlock(&devlink_mutex); return PTR_ERR(devlink); } - if (~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK) - devl_lock(devlink); + devl_lock(devlink); info->user_ptr[0] = devlink; if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_PORT) { devlink_port = devlink_port_get_from_info(devlink, info); @@ -831,8 +824,7 @@ static int devlink_nl_pre_doit(const struct genl_ops *ops, return 0; unlock: - if (~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK) - devl_unlock(devlink); + devl_unlock(devlink); devlink_put(devlink); mutex_unlock(&devlink_mutex); return err; @@ -849,8 +841,7 @@ static void devlink_nl_post_doit(const struct genl_ops *ops, linecard = info->user_ptr[1]; devlink_linecard_put(linecard); } - if (~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK) - devl_unlock(devlink); + devl_unlock(devlink); devlink_put(devlink); mutex_unlock(&devlink_mutex); } @@ -9414,7 +9405,6 @@ static const struct genl_small_ops devlink_nl_ops[] = { .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, .doit = devlink_nl_cmd_reload, .flags = GENL_ADMIN_PERM, - .internal_flags = DEVLINK_NL_FLAG_NO_LOCK, }, { .cmd = DEVLINK_CMD_PARAM_GET, @@ -12507,10 +12497,12 @@ static void __net_exit devlink_pernet_pre_exit(struct net *net) mutex_lock(&devlink_mutex); devlinks_xa_for_each_registered_get(net, index, devlink) { WARN_ON(!(devlink->features & DEVLINK_F_RELOAD)); + mutex_lock(&devlink->lock); err = devlink_reload(devlink, &init_net, DEVLINK_RELOAD_ACTION_DRIVER_REINIT, DEVLINK_RELOAD_LIMIT_UNSPEC, &actions_performed, NULL); + mutex_unlock(&devlink->lock); if (err && err != -EOPNOTSUPP) pr_warn("Failed to reload devlink instance into init_net\n"); devlink_put(devlink); |