From: Jakub Kicinski <kuba@kernel.org>
To: davem@davemloft.net
Cc: netdev@vger.kernel.org, edumazet@google.com, pabeni@redhat.com,
jiri@resnulli.us, jacob.e.keller@intel.com, leon@kernel.org,
Jakub Kicinski <kuba@kernel.org>
Subject: [RFC net-next 11/15] devlink: restart dump based on devlink instance ids (nested)
Date: Wed, 14 Dec 2022 18:01:51 -0800 [thread overview]
Message-ID: <20221215020155.1619839-12-kuba@kernel.org> (raw)
In-Reply-To: <20221215020155.1619839-1-kuba@kernel.org>
Use xarray id for cases of simple sub-object iteration.
We'll now use the dump->instance for the devlink instances
and dump->idx for subobject index.
Moving the definition of idx into the inner loop makes sense,
so while at it also move other sub-object local variables into
the loop.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
net/devlink/basic.c | 93 +++++++++++++++++++------------------
net/devlink/devl_internal.h | 2 +-
2 files changed, 49 insertions(+), 46 deletions(-)
diff --git a/net/devlink/basic.c b/net/devlink/basic.c
index 0f24b321b0bb..028a763feb50 100644
--- a/net/devlink/basic.c
+++ b/net/devlink/basic.c
@@ -1223,13 +1223,13 @@ static int devlink_nl_cmd_rate_get_dumpit(struct sk_buff *msg,
struct netlink_callback *cb)
{
struct devlink_nl_dump_state *dump = devl_dump_state(cb);
- struct devlink_rate *devlink_rate;
struct devlink *devlink;
- unsigned long index;
- int idx = 0;
int err = 0;
- devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
+ devlink_dump_for_each_instance_get(msg, dump, devlink) {
+ struct devlink_rate *devlink_rate;
+ int idx = 0;
+
devl_lock(devlink);
list_for_each_entry(devlink_rate, &devlink->rate_list, list) {
enum devlink_command cmd = DEVLINK_CMD_RATE_NEW;
@@ -1245,6 +1245,7 @@ static int devlink_nl_cmd_rate_get_dumpit(struct sk_buff *msg,
if (err) {
devl_unlock(devlink);
devlink_put(devlink);
+ dump->idx = idx;
goto out;
}
idx++;
@@ -1256,7 +1257,6 @@ static int devlink_nl_cmd_rate_get_dumpit(struct sk_buff *msg,
if (err != -EMSGSIZE)
return err;
- dump->idx = idx;
return msg->len;
}
@@ -1363,12 +1363,13 @@ static int devlink_nl_cmd_port_get_dumpit(struct sk_buff *msg,
{
struct devlink_nl_dump_state *dump = devl_dump_state(cb);
struct devlink *devlink;
- struct devlink_port *devlink_port;
- unsigned long index, port_index;
- int idx = 0;
int err;
- devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
+ devlink_dump_for_each_instance_get(msg, dump, devlink) {
+ struct devlink_port *devlink_port;
+ unsigned long port_index;
+ int idx = 0;
+
devl_lock(devlink);
xa_for_each(&devlink->ports, port_index, devlink_port) {
if (idx < dump->idx) {
@@ -1383,6 +1384,7 @@ static int devlink_nl_cmd_port_get_dumpit(struct sk_buff *msg,
if (err) {
devl_unlock(devlink);
devlink_put(devlink);
+ dump->idx = idx;
goto out;
}
idx++;
@@ -1391,7 +1393,6 @@ static int devlink_nl_cmd_port_get_dumpit(struct sk_buff *msg,
devlink_put(devlink);
}
out:
- dump->idx = idx;
return msg->len;
}
@@ -2143,11 +2144,11 @@ static int devlink_nl_cmd_linecard_get_dumpit(struct sk_buff *msg,
struct devlink_nl_dump_state *dump = devl_dump_state(cb);
struct devlink_linecard *linecard;
struct devlink *devlink;
- unsigned long index;
- int idx = 0;
int err;
- devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
+ devlink_dump_for_each_instance_get(msg, dump, devlink) {
+ int idx = 0;
+
mutex_lock(&devlink->linecards_lock);
list_for_each_entry(linecard, &devlink->linecard_list, list) {
if (idx < dump->idx) {
@@ -2165,6 +2166,7 @@ static int devlink_nl_cmd_linecard_get_dumpit(struct sk_buff *msg,
if (err) {
mutex_unlock(&devlink->linecards_lock);
devlink_put(devlink);
+ dump->idx = idx;
goto out;
}
idx++;
@@ -2173,7 +2175,6 @@ static int devlink_nl_cmd_linecard_get_dumpit(struct sk_buff *msg,
devlink_put(devlink);
}
out:
- dump->idx = idx;
return msg->len;
}
@@ -2404,12 +2405,12 @@ static int devlink_nl_cmd_sb_get_dumpit(struct sk_buff *msg,
{
struct devlink_nl_dump_state *dump = devl_dump_state(cb);
struct devlink *devlink;
- struct devlink_sb *devlink_sb;
- unsigned long index;
- int idx = 0;
int err;
- devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
+ devlink_dump_for_each_instance_get(msg, dump, devlink) {
+ struct devlink_sb *devlink_sb;
+ int idx = 0;
+
devl_lock(devlink);
list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
if (idx < dump->idx) {
@@ -2424,6 +2425,7 @@ static int devlink_nl_cmd_sb_get_dumpit(struct sk_buff *msg,
if (err) {
devl_unlock(devlink);
devlink_put(devlink);
+ dump->idx = idx;
goto out;
}
idx++;
@@ -2432,7 +2434,6 @@ static int devlink_nl_cmd_sb_get_dumpit(struct sk_buff *msg,
devlink_put(devlink);
}
out:
- dump->idx = idx;
return msg->len;
}
@@ -5339,13 +5340,13 @@ static int devlink_nl_cmd_param_get_dumpit(struct sk_buff *msg,
struct netlink_callback *cb)
{
struct devlink_nl_dump_state *dump = devl_dump_state(cb);
- struct devlink_param_item *param_item;
struct devlink *devlink;
- unsigned long index;
- int idx = 0;
int err = 0;
- devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
+ devlink_dump_for_each_instance_get(msg, dump, devlink) {
+ struct devlink_param_item *param_item;
+ int idx = 0;
+
devl_lock(devlink);
list_for_each_entry(param_item, &devlink->param_list, list) {
if (idx < dump->idx) {
@@ -5362,6 +5363,7 @@ static int devlink_nl_cmd_param_get_dumpit(struct sk_buff *msg,
} else if (err) {
devl_unlock(devlink);
devlink_put(devlink);
+ dump->idx = idx;
goto out;
}
idx++;
@@ -5373,7 +5375,6 @@ static int devlink_nl_cmd_param_get_dumpit(struct sk_buff *msg,
if (err != -EMSGSIZE)
return err;
- dump->idx = idx;
return msg->len;
}
@@ -7893,14 +7894,15 @@ devlink_nl_cmd_health_reporter_get_dumpit(struct sk_buff *msg,
struct netlink_callback *cb)
{
struct devlink_nl_dump_state *dump = devl_dump_state(cb);
- struct devlink_health_reporter *reporter;
- unsigned long index, port_index;
- struct devlink_port *port;
struct devlink *devlink;
- int idx = 0;
int err;
- devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
+ devlink_dump_for_each_instance_get(msg, dump, devlink) {
+ struct devlink_health_reporter *reporter;
+ struct devlink_port *port;
+ unsigned long port_index;
+ int idx = 0;
+
mutex_lock(&devlink->reporters_lock);
list_for_each_entry(reporter, &devlink->reporter_list,
list) {
@@ -7915,6 +7917,7 @@ devlink_nl_cmd_health_reporter_get_dumpit(struct sk_buff *msg,
if (err) {
mutex_unlock(&devlink->reporters_lock);
devlink_put(devlink);
+ dump->idx = idx;
goto out;
}
idx++;
@@ -7938,6 +7941,7 @@ devlink_nl_cmd_health_reporter_get_dumpit(struct sk_buff *msg,
mutex_unlock(&port->reporters_lock);
devl_unlock(devlink);
devlink_put(devlink);
+ dump->idx = idx;
goto out;
}
idx++;
@@ -7948,7 +7952,6 @@ devlink_nl_cmd_health_reporter_get_dumpit(struct sk_buff *msg,
devlink_put(devlink);
}
out:
- dump->idx = idx;
return msg->len;
}
@@ -8474,13 +8477,13 @@ static int devlink_nl_cmd_trap_get_dumpit(struct sk_buff *msg,
struct netlink_callback *cb)
{
struct devlink_nl_dump_state *dump = devl_dump_state(cb);
- struct devlink_trap_item *trap_item;
struct devlink *devlink;
- unsigned long index;
- int idx = 0;
int err;
- devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
+ devlink_dump_for_each_instance_get(msg, dump, devlink) {
+ struct devlink_trap_item *trap_item;
+ int idx = 0;
+
devl_lock(devlink);
list_for_each_entry(trap_item, &devlink->trap_list, list) {
if (idx < dump->idx) {
@@ -8495,6 +8498,7 @@ static int devlink_nl_cmd_trap_get_dumpit(struct sk_buff *msg,
if (err) {
devl_unlock(devlink);
devlink_put(devlink);
+ dump->idx = idx;
goto out;
}
idx++;
@@ -8503,7 +8507,6 @@ static int devlink_nl_cmd_trap_get_dumpit(struct sk_buff *msg,
devlink_put(devlink);
}
out:
- dump->idx = idx;
return msg->len;
}
@@ -8690,14 +8693,14 @@ static int devlink_nl_cmd_trap_group_get_dumpit(struct sk_buff *msg,
{
struct devlink_nl_dump_state *dump = devl_dump_state(cb);
enum devlink_command cmd = DEVLINK_CMD_TRAP_GROUP_NEW;
- struct devlink_trap_group_item *group_item;
u32 portid = NETLINK_CB(cb->skb).portid;
struct devlink *devlink;
- unsigned long index;
- int idx = 0;
int err;
- devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
+ devlink_dump_for_each_instance_get(msg, dump, devlink) {
+ struct devlink_trap_group_item *group_item;
+ int idx = 0;
+
devl_lock(devlink);
list_for_each_entry(group_item, &devlink->trap_group_list,
list) {
@@ -8713,6 +8716,7 @@ static int devlink_nl_cmd_trap_group_get_dumpit(struct sk_buff *msg,
if (err) {
devl_unlock(devlink);
devlink_put(devlink);
+ dump->idx = idx;
goto out;
}
idx++;
@@ -8721,7 +8725,6 @@ static int devlink_nl_cmd_trap_group_get_dumpit(struct sk_buff *msg,
devlink_put(devlink);
}
out:
- dump->idx = idx;
return msg->len;
}
@@ -8994,14 +8997,14 @@ static int devlink_nl_cmd_trap_policer_get_dumpit(struct sk_buff *msg,
{
struct devlink_nl_dump_state *dump = devl_dump_state(cb);
enum devlink_command cmd = DEVLINK_CMD_TRAP_POLICER_NEW;
- struct devlink_trap_policer_item *policer_item;
u32 portid = NETLINK_CB(cb->skb).portid;
struct devlink *devlink;
- unsigned long index;
- int idx = 0;
int err;
- devlinks_xa_for_each_registered_get(sock_net(msg->sk), index, devlink) {
+ devlink_dump_for_each_instance_get(msg, dump, devlink) {
+ struct devlink_trap_policer_item *policer_item;
+ int idx = 0;
+
devl_lock(devlink);
list_for_each_entry(policer_item, &devlink->trap_policer_list,
list) {
@@ -9017,6 +9020,7 @@ static int devlink_nl_cmd_trap_policer_get_dumpit(struct sk_buff *msg,
if (err) {
devl_unlock(devlink);
devlink_put(devlink);
+ dump->idx = idx;
goto out;
}
idx++;
@@ -9025,7 +9029,6 @@ static int devlink_nl_cmd_trap_policer_get_dumpit(struct sk_buff *msg,
devlink_put(devlink);
}
out:
- dump->idx = idx;
return msg->len;
}
diff --git a/net/devlink/devl_internal.h b/net/devlink/devl_internal.h
index a567ff77601d..5adac38454fd 100644
--- a/net/devlink/devl_internal.h
+++ b/net/devlink/devl_internal.h
@@ -129,7 +129,7 @@ struct devlink_nl_dump_state {
#define devlink_dump_for_each_instance_get(msg, dump, devlink) \
for (; (devlink = devlinks_xa_find_get(sock_net(msg->sk), \
&dump->instance, xa_find)); \
- dump->instance++)
+ dump->instance++, dump->idx = 0)
extern const struct genl_small_ops devlink_nl_ops[56];
--
2.38.1
next prev parent reply other threads:[~2022-12-15 2:02 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-12-15 2:01 [RFC net-next 00/15] devlink: code split and structured instance walk Jakub Kicinski
2022-12-15 2:01 ` [RFC net-next 01/15] devlink: move code to a dedicated directory Jakub Kicinski
2022-12-15 9:51 ` Jiri Pirko
2022-12-15 18:44 ` Jacob Keller
2022-12-15 19:13 ` Jakub Kicinski
2022-12-15 19:09 ` Jakub Kicinski
2022-12-15 19:29 ` Jacob Keller
2022-12-15 19:48 ` Jakub Kicinski
2022-12-16 9:09 ` Jiri Pirko
2022-12-16 9:10 ` Jiri Pirko
2022-12-16 18:32 ` Jakub Kicinski
2022-12-16 23:26 ` Jacob Keller
2022-12-15 2:01 ` [RFC net-next 02/15] devlink: split out core code Jakub Kicinski
2022-12-15 2:01 ` [RFC net-next 03/15] devlink: split out netlink code Jakub Kicinski
2022-12-15 18:45 ` Jacob Keller
2022-12-15 19:14 ` Jakub Kicinski
2022-12-15 19:35 ` Jacob Keller
2022-12-15 2:01 ` [RFC net-next 04/15] devlink: protect devlink dump by the instance lock Jakub Kicinski
2022-12-15 8:42 ` Jiri Pirko
2022-12-15 19:17 ` Jakub Kicinski
2022-12-15 2:01 ` [RFC net-next 05/15] netlink: add macro for checking dump ctx size Jakub Kicinski
2022-12-15 2:01 ` [RFC net-next 06/15] devlink: use an explicit structure for dump context Jakub Kicinski
2022-12-15 9:52 ` Jiri Pirko
2022-12-15 18:50 ` Jacob Keller
2022-12-15 19:18 ` Jakub Kicinski
2022-12-15 2:01 ` [RFC net-next 07/15] devlink: remove start variables from dumps Jakub Kicinski
2022-12-15 2:01 ` [RFC net-next 08/15] devlink: drop the filter argument from devlinks_xa_find_get Jakub Kicinski
2022-12-15 18:52 ` Jacob Keller
2022-12-15 2:01 ` [RFC net-next 09/15] devlink: health: combine loops in dump Jakub Kicinski
2022-12-15 2:01 ` [RFC net-next 10/15] devlink: restart dump based on devlink instance ids (simple) Jakub Kicinski
2022-12-15 18:59 ` Jacob Keller
2022-12-15 2:01 ` Jakub Kicinski [this message]
2022-12-15 2:01 ` [RFC net-next 12/15] devlink: restart dump based on devlink instance ids (function) Jakub Kicinski
2022-12-15 2:01 ` [RFC net-next 13/15] devlink: uniformly take the devlink instance lock in the dump loop Jakub Kicinski
2022-12-15 2:01 ` [RFC net-next 14/15] devlink: add by-instance dump infra Jakub Kicinski
2022-12-15 9:11 ` Jiri Pirko
2022-12-15 19:24 ` Jacob Keller
2022-12-15 19:47 ` Jakub Kicinski
2022-12-16 9:23 ` Jiri Pirko
2022-12-15 19:03 ` Jacob Keller
2022-12-15 2:01 ` [RFC net-next 15/15] devlink: convert remaining dumps to the by-instance scheme Jakub Kicinski
2022-12-15 19:39 ` [RFC net-next 00/15] devlink: code split and structured instance walk Jacob Keller
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