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Date: Sat, 7 Jan 2023 11:11:47 +0100
From: Jiri Pirko <jiri@...nulli.us>
To: netdev@...r.kernel.org
Cc: davem@...emloft.net, kuba@...nel.org, pabeni@...hat.com,
edumazet@...gle.com, michael.chan@...adcom.com,
yisen.zhuang@...wei.com, salil.mehta@...wei.com,
jesse.brandeburg@...el.com, anthony.l.nguyen@...el.com,
tariqt@...dia.com, saeedm@...dia.com, leon@...nel.org,
idosch@...dia.com, petrm@...dia.com, mailhol.vincent@...adoo.fr,
jacob.e.keller@...el.com, gal@...dia.com
Subject: [patch net-next v2 6/9] devlink: convert linecards dump to devlink_nl_instance_iter_dump()
From: Jiri Pirko <jiri@...dia.com>
Benefit from recently introduced instance iteration and convert
linecards .dumpit generic netlink callback to use it.
Signed-off-by: Jiri Pirko <jiri@...dia.com>
---
net/devlink/devl_internal.h | 1 +
net/devlink/leftover.c | 64 ++++++++++++++++---------------------
net/devlink/netlink.c | 1 +
3 files changed, 30 insertions(+), 36 deletions(-)
diff --git a/net/devlink/devl_internal.h b/net/devlink/devl_internal.h
index 69d10b93616e..52d958c1c977 100644
--- a/net/devlink/devl_internal.h
+++ b/net/devlink/devl_internal.h
@@ -165,6 +165,7 @@ extern const struct devlink_gen_cmd devl_gen_info;
extern const struct devlink_gen_cmd devl_gen_trap;
extern const struct devlink_gen_cmd devl_gen_trap_group;
extern const struct devlink_gen_cmd devl_gen_trap_policer;
+extern const struct devlink_gen_cmd devl_gen_linecard;
/* Ports */
int devlink_port_netdevice_event(struct notifier_block *nb,
diff --git a/net/devlink/leftover.c b/net/devlink/leftover.c
index c512ddb6bd5e..c5feda997932 100644
--- a/net/devlink/leftover.c
+++ b/net/devlink/leftover.c
@@ -2105,50 +2105,42 @@ static int devlink_nl_cmd_linecard_get_doit(struct sk_buff *skb,
return genlmsg_reply(msg, info);
}
-static int devlink_nl_cmd_linecard_get_dumpit(struct sk_buff *msg,
- struct netlink_callback *cb)
+static int devlink_nl_cmd_linecard_get_dump_one(struct sk_buff *msg,
+ struct devlink *devlink,
+ struct netlink_callback *cb)
{
struct devlink_nl_dump_state *state = devlink_dump_state(cb);
struct devlink_linecard *linecard;
- struct devlink *devlink;
- int err;
-
- devlink_dump_for_each_instance_get(msg, state, devlink) {
- int idx = 0;
-
- devl_lock(devlink);
- if (!devl_is_registered(devlink))
- goto next_devlink;
+ int idx = 0;
+ int err = 0;
- list_for_each_entry(linecard, &devlink->linecard_list, list) {
- if (idx < state->idx) {
- idx++;
- continue;
- }
- mutex_lock(&linecard->state_lock);
- err = devlink_nl_linecard_fill(msg, devlink, linecard,
- DEVLINK_CMD_LINECARD_NEW,
- NETLINK_CB(cb->skb).portid,
- cb->nlh->nlmsg_seq,
- NLM_F_MULTI,
- cb->extack);
- mutex_unlock(&linecard->state_lock);
- if (err) {
- devl_unlock(devlink);
- devlink_put(devlink);
- state->idx = idx;
- goto out;
- }
+ list_for_each_entry(linecard, &devlink->linecard_list, list) {
+ if (idx < state->idx) {
idx++;
+ continue;
}
-next_devlink:
- devl_unlock(devlink);
- devlink_put(devlink);
+ mutex_lock(&linecard->state_lock);
+ err = devlink_nl_linecard_fill(msg, devlink, linecard,
+ DEVLINK_CMD_LINECARD_NEW,
+ NETLINK_CB(cb->skb).portid,
+ cb->nlh->nlmsg_seq,
+ NLM_F_MULTI,
+ cb->extack);
+ mutex_unlock(&linecard->state_lock);
+ if (err) {
+ state->idx = idx;
+ break;
+ }
+ idx++;
}
-out:
- return msg->len;
+
+ return err;
}
+const struct devlink_gen_cmd devl_gen_linecard = {
+ .dump_one = devlink_nl_cmd_linecard_get_dump_one,
+};
+
static struct devlink_linecard_type *
devlink_linecard_type_lookup(struct devlink_linecard *linecard,
const char *type)
@@ -8996,7 +8988,7 @@ const struct genl_small_ops devlink_nl_ops[56] = {
{
.cmd = DEVLINK_CMD_LINECARD_GET,
.doit = devlink_nl_cmd_linecard_get_doit,
- .dumpit = devlink_nl_cmd_linecard_get_dumpit,
+ .dumpit = devlink_nl_instance_iter_dump,
.internal_flags = DEVLINK_NL_FLAG_NEED_LINECARD,
/* can be retrieved by unprivileged users */
},
diff --git a/net/devlink/netlink.c b/net/devlink/netlink.c
index 3f2ab4360f11..b18e216e09b0 100644
--- a/net/devlink/netlink.c
+++ b/net/devlink/netlink.c
@@ -191,6 +191,7 @@ static const struct devlink_gen_cmd *devl_gen_cmds[] = {
[DEVLINK_CMD_TRAP_GET] = &devl_gen_trap,
[DEVLINK_CMD_TRAP_GROUP_GET] = &devl_gen_trap_group,
[DEVLINK_CMD_TRAP_POLICER_GET] = &devl_gen_trap_policer,
+ [DEVLINK_CMD_LINECARD_GET] = &devl_gen_linecard,
[DEVLINK_CMD_SELFTESTS_GET] = &devl_gen_selftests,
};
--
2.39.0
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