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net: devlink: move net check into devlinks_xa_for_each_registered_get() 

Benefit from having devlinks iterator helper
devlinks_xa_for_each_registered_get() and move the net pointer
check inside.

Suggested-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Jiri Pirko 2022-07-25 10:29:15 +02:00 committed by Jakub Kicinski
parent 30bab7cdb5
commit 294c4f57cf
1 changed files with 39 additions and 96 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

135
net/core/devlink.c
View File

@ -289,7 +289,7 @@ void devl_unlock(struct devlink *devlink)
EXPORT_SYMBOL_GPL(devl_unlock);
static struct devlink *
devlinks_xa_find_get(unsigned long *indexp, xa_mark_t filter,
devlinks_xa_find_get(struct net *net, unsigned long *indexp, xa_mark_t filter,
void * (*xa_find_fn)(struct xarray *, unsigned long *,
unsigned long, xa_mark_t))
{
@ -304,33 +304,40 @@ retry:
xa_find_fn = xa_find_after;
if (!devlink_try_get(devlink))
goto retry;
if (!net_eq(devlink_net(devlink), net)) {
devlink_put(devlink);
goto retry;
}
unlock:
rcu_read_unlock();
return devlink;
}
static struct devlink *devlinks_xa_find_get_first(unsigned long *indexp,
static struct devlink *devlinks_xa_find_get_first(struct net *net,
unsigned long *indexp,
xa_mark_t filter)
{
return devlinks_xa_find_get(indexp, filter, xa_find);
return devlinks_xa_find_get(net, indexp, filter, xa_find);
}
static struct devlink *devlinks_xa_find_get_next(unsigned long *indexp,
static struct devlink *devlinks_xa_find_get_next(struct net *net,
unsigned long *indexp,
xa_mark_t filter)
{
return devlinks_xa_find_get(indexp, filter, xa_find_after);
return devlinks_xa_find_get(net, indexp, filter, xa_find_after);
}
/* Iterate over devlink pointers which were possible to get reference to.
* devlink_put() needs to be called for each iterated devlink pointer
* in loop body in order to release the reference.
*/
#define devlinks_xa_for_each_get(index, devlink, filter) \
for (index = 0, devlink = devlinks_xa_find_get_first(&index, filter); \
devlink; devlink = devlinks_xa_find_get_next(&index, filter))
#define devlinks_xa_for_each_get(net, index, devlink, filter) \
for (index = 0, \
devlink = devlinks_xa_find_get_first(net, &index, filter); \
devlink; devlink = devlinks_xa_find_get_next(net, &index, filter))
#define devlinks_xa_for_each_registered_get(index, devlink) \
devlinks_xa_for_each_get(index, devlink, DEVLINK_REGISTERED)
#define devlinks_xa_for_each_registered_get(net, index, devlink) \
devlinks_xa_for_each_get(net, index, devlink, DEVLINK_REGISTERED)
static struct devlink *devlink_get_from_attrs(struct net *net,
struct nlattr **attrs)
@ -346,10 +353,9 @@ static struct devlink *devlink_get_from_attrs(struct net *net,
busname = nla_data(attrs[DEVLINK_ATTR_BUS_NAME]);
devname = nla_data(attrs[DEVLINK_ATTR_DEV_NAME]);
devlinks_xa_for_each_registered_get(index, devlink) {
devlinks_xa_for_each_registered_get(net, index, devlink) {
if (strcmp(devlink->dev->bus->name, busname) == 0 &&
strcmp(dev_name(devlink->dev), devname) == 0 &&
net_eq(devlink_net(devlink), net))
strcmp(dev_name(devlink->dev), devname) == 0)
return devlink;
devlink_put(devlink);
}
@ -1376,10 +1382,7 @@ static int devlink_nl_cmd_rate_get_dumpit(struct sk_buff *msg,
int err = 0;
mutex_lock(&devlink_mutex);
devlinks_xa_for_each_registered_get(index, devlink) {
if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
goto retry;
devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
devl_lock(devlink);
list_for_each_entry(devlink_rate, &devlink->rate_list, list) {
enum devlink_command cmd = DEVLINK_CMD_RATE_NEW;
@ -1400,7 +1403,6 @@ static int devlink_nl_cmd_rate_get_dumpit(struct sk_buff *msg,
idx++;
}
devl_unlock(devlink);
retry:
devlink_put(devlink);
}
out:
@ -1476,12 +1478,7 @@ static int devlink_nl_cmd_get_dumpit(struct sk_buff *msg,
int err;
mutex_lock(&devlink_mutex);
devlinks_xa_for_each_registered_get(index, devlink) {
if (!net_eq(devlink_net(devlink), sock_net(msg->sk))) {
devlink_put(devlink);
continue;
}
devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
if (idx < start) {
idx++;
devlink_put(devlink);
@ -1536,10 +1533,7 @@ static int devlink_nl_cmd_port_get_dumpit(struct sk_buff *msg,
int err;
mutex_lock(&devlink_mutex);
devlinks_xa_for_each_registered_get(index, devlink) {
if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
goto retry;
devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
devl_lock(devlink);
list_for_each_entry(devlink_port, &devlink->port_list, list) {
if (idx < start) {
@ -1559,7 +1553,6 @@ static int devlink_nl_cmd_port_get_dumpit(struct sk_buff *msg,
idx++;
}
devl_unlock(devlink);
retry:
devlink_put(devlink);
}
out:
@ -2215,10 +2208,7 @@ static int devlink_nl_cmd_linecard_get_dumpit(struct sk_buff *msg,
int err;
mutex_lock(&devlink_mutex);
devlinks_xa_for_each_registered_get(index, devlink) {
if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
goto retry;
devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
mutex_lock(&devlink->linecards_lock);
list_for_each_entry(linecard, &devlink->linecard_list, list) {
if (idx < start) {
@ -2241,7 +2231,6 @@ static int devlink_nl_cmd_linecard_get_dumpit(struct sk_buff *msg,
idx++;
}
mutex_unlock(&devlink->linecards_lock);
retry:
devlink_put(devlink);
}
out:
@ -2484,10 +2473,7 @@ static int devlink_nl_cmd_sb_get_dumpit(struct sk_buff *msg,
int err;
mutex_lock(&devlink_mutex);
devlinks_xa_for_each_registered_get(index, devlink) {
if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
goto retry;
devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
devl_lock(devlink);
list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
if (idx < start) {
@ -2507,7 +2493,6 @@ static int devlink_nl_cmd_sb_get_dumpit(struct sk_buff *msg,
idx++;
}
devl_unlock(devlink);
retry:
devlink_put(devlink);
}
out:
@ -2633,7 +2618,7 @@ static int devlink_nl_cmd_sb_pool_get_dumpit(struct sk_buff *msg,
int err = 0;
mutex_lock(&devlink_mutex);
devlinks_xa_for_each_registered_get(index, devlink) {
devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) ||
!devlink->ops->sb_pool_get)
goto retry;
@ -2851,9 +2836,8 @@ static int devlink_nl_cmd_sb_port_pool_get_dumpit(struct sk_buff *msg,
int err = 0;
mutex_lock(&devlink_mutex);
devlinks_xa_for_each_registered_get(index, devlink) {
if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) ||
!devlink->ops->sb_port_pool_get)
devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
if (!devlink->ops->sb_port_pool_get)
goto retry;
devl_lock(devlink);
@ -3097,9 +3081,8 @@ devlink_nl_cmd_sb_tc_pool_bind_get_dumpit(struct sk_buff *msg,
int err = 0;
mutex_lock(&devlink_mutex);
devlinks_xa_for_each_registered_get(index, devlink) {
if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) ||
!devlink->ops->sb_tc_pool_bind_get)
devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
if (!devlink->ops->sb_tc_pool_bind_get)
goto retry;
devl_lock(devlink);
@ -5181,10 +5164,7 @@ static int devlink_nl_cmd_param_get_dumpit(struct sk_buff *msg,
int err = 0;
mutex_lock(&devlink_mutex);
devlinks_xa_for_each_registered_get(index, devlink) {
if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
goto retry;
devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
devl_lock(devlink);
list_for_each_entry(param_item, &devlink->param_list, list) {
if (idx < start) {
@ -5206,7 +5186,6 @@ static int devlink_nl_cmd_param_get_dumpit(struct sk_buff *msg,
idx++;
}
devl_unlock(devlink);
retry:
devlink_put(devlink);
}
out:
@ -5413,10 +5392,7 @@ static int devlink_nl_cmd_port_param_get_dumpit(struct sk_buff *msg,
int err = 0;
mutex_lock(&devlink_mutex);
devlinks_xa_for_each_registered_get(index, devlink) {
if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
goto retry;
devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
devl_lock(devlink);
list_for_each_entry(devlink_port, &devlink->port_list, list) {
list_for_each_entry(param_item,
@ -5443,7 +5419,6 @@ static int devlink_nl_cmd_port_param_get_dumpit(struct sk_buff *msg,
}
}
devl_unlock(devlink);
retry:
devlink_put(devlink);
}
out:
@ -5994,13 +5969,9 @@ static int devlink_nl_cmd_region_get_dumpit(struct sk_buff *msg,
int err = 0;
mutex_lock(&devlink_mutex);
devlinks_xa_for_each_registered_get(index, devlink) {
if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
goto retry;
devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
err = devlink_nl_cmd_region_get_devlink_dumpit(msg, cb, devlink,
&idx, start);
retry:
devlink_put(devlink);
if (err)
goto out;
@ -6525,10 +6496,7 @@ static int devlink_nl_cmd_info_get_dumpit(struct sk_buff *msg,
int err = 0;
mutex_lock(&devlink_mutex);
devlinks_xa_for_each_registered_get(index, devlink) {
if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
goto retry;
devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
if (idx < start || !devlink->ops->info_get)
goto inc;
@ -6546,7 +6514,6 @@ static int devlink_nl_cmd_info_get_dumpit(struct sk_buff *msg,
}
inc:
idx++;
retry:
devlink_put(devlink);
}
mutex_unlock(&devlink_mutex);
@ -7702,10 +7669,7 @@ devlink_nl_cmd_health_reporter_get_dumpit(struct sk_buff *msg,
int err;
mutex_lock(&devlink_mutex);
devlinks_xa_for_each_registered_get(index, devlink) {
if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
goto retry_rep;
devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
mutex_lock(&devlink->reporters_lock);
list_for_each_entry(reporter, &devlink->reporter_list,
list) {
@ -7725,14 +7689,10 @@ devlink_nl_cmd_health_reporter_get_dumpit(struct sk_buff *msg,
idx++;
}
mutex_unlock(&devlink->reporters_lock);
retry_rep:
devlink_put(devlink);
}
devlinks_xa_for_each_registered_get(index, devlink) {
if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
goto retry_port;
devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
devl_lock(devlink);
list_for_each_entry(port, &devlink->port_list, list) {
mutex_lock(&port->reporters_lock);
@ -7757,7 +7717,6 @@ retry_rep:
mutex_unlock(&port->reporters_lock);
}
devl_unlock(devlink);
retry_port:
devlink_put(devlink);
}
out:
@ -8296,10 +8255,7 @@ static int devlink_nl_cmd_trap_get_dumpit(struct sk_buff *msg,
int err;
mutex_lock(&devlink_mutex);
devlinks_xa_for_each_registered_get(index, devlink) {
if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
goto retry;
devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
devl_lock(devlink);
list_for_each_entry(trap_item, &devlink->trap_list, list) {
if (idx < start) {
@ -8319,7 +8275,6 @@ static int devlink_nl_cmd_trap_get_dumpit(struct sk_buff *msg,
idx++;
}
devl_unlock(devlink);
retry:
devlink_put(devlink);
}
out:
@ -8520,10 +8475,7 @@ static int devlink_nl_cmd_trap_group_get_dumpit(struct sk_buff *msg,
int err;
mutex_lock(&devlink_mutex);
devlinks_xa_for_each_registered_get(index, devlink) {
if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
goto retry;
devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
devl_lock(devlink);
list_for_each_entry(group_item, &devlink->trap_group_list,
list) {
@ -8544,7 +8496,6 @@ static int devlink_nl_cmd_trap_group_get_dumpit(struct sk_buff *msg,
idx++;
}
devl_unlock(devlink);
retry:
devlink_put(devlink);
}
out:
@ -8831,10 +8782,7 @@ static int devlink_nl_cmd_trap_policer_get_dumpit(struct sk_buff *msg,
int err;
mutex_lock(&devlink_mutex);
devlinks_xa_for_each_registered_get(index, devlink) {
if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
goto retry;
devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
devl_lock(devlink);
list_for_each_entry(policer_item, &devlink->trap_policer_list,
list) {
@ -8855,7 +8803,6 @@ static int devlink_nl_cmd_trap_policer_get_dumpit(struct sk_buff *msg,
idx++;
}
devl_unlock(devlink);
retry:
devlink_put(devlink);
}
out:
@ -12273,10 +12220,7 @@ static void __net_exit devlink_pernet_pre_exit(struct net *net)
* all devlink instances from this namespace into init_net.
*/
mutex_lock(&devlink_mutex);
devlinks_xa_for_each_registered_get(index, devlink) {
if (!net_eq(devlink_net(devlink), net))
goto retry;
devlinks_xa_for_each_registered_get(net, index, devlink) {
WARN_ON(!(devlink->features & DEVLINK_F_RELOAD));
err = devlink_reload(devlink, &init_net,
DEVLINK_RELOAD_ACTION_DRIVER_REINIT,
@ -12284,7 +12228,6 @@ static void __net_exit devlink_pernet_pre_exit(struct net *net)
&actions_performed, NULL);
if (err && err != -EOPNOTSUPP)
pr_warn("Failed to reload devlink instance into init_net\n");
retry:
devlink_put(devlink);
}
mutex_unlock(&devlink_mutex);