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devlink: Split out dev get and dump code

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Move devlink dev get and dump callbacks and related dev code to new file
dev.c. This file shall include all callbacks that are specific on
devlink dev object.

No functional change in this patch.

Signed-off-by: Moshe Shemesh <moshe@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Moshe Shemesh
2023-02-02 16:47:00 +02:00
committed by Jakub Kicinski
parent d795527d50
commit dbeeca81bd
4 changed files with 118 additions and 102 deletions
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99
net/devlink/dev.c Normal file
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@@ -0,0 +1,99 @@
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (c) 2016 Mellanox Technologies. All rights reserved.
* Copyright (c) 2016 Jiri Pirko <jiri@mellanox.com>
*/
#include <net/genetlink.h>
#include "devl_internal.h"
static int devlink_nl_fill(struct sk_buff *msg, struct devlink *devlink,
enum devlink_command cmd, u32 portid,
u32 seq, int flags)
{
struct nlattr *dev_stats;
void *hdr;
hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
if (!hdr)
return -EMSGSIZE;
if (devlink_nl_put_handle(msg, devlink))
goto nla_put_failure;
if (nla_put_u8(msg, DEVLINK_ATTR_RELOAD_FAILED, devlink->reload_failed))
goto nla_put_failure;
dev_stats = nla_nest_start(msg, DEVLINK_ATTR_DEV_STATS);
if (!dev_stats)
goto nla_put_failure;
if (devlink_reload_stats_put(msg, devlink, false))
goto dev_stats_nest_cancel;
if (devlink_reload_stats_put(msg, devlink, true))
goto dev_stats_nest_cancel;
nla_nest_end(msg, dev_stats);
genlmsg_end(msg, hdr);
return 0;
dev_stats_nest_cancel:
nla_nest_cancel(msg, dev_stats);
nla_put_failure:
genlmsg_cancel(msg, hdr);
return -EMSGSIZE;
}
void devlink_notify(struct devlink *devlink, enum devlink_command cmd)
{
struct sk_buff *msg;
int err;
WARN_ON(cmd != DEVLINK_CMD_NEW && cmd != DEVLINK_CMD_DEL);
WARN_ON(!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED));
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
return;
err = devlink_nl_fill(msg, devlink, cmd, 0, 0, 0);
if (err) {
nlmsg_free(msg);
return;
}
genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
}
int devlink_nl_cmd_get_doit(struct sk_buff *skb, struct genl_info *info)
{
struct devlink *devlink = info->user_ptr[0];
struct sk_buff *msg;
int err;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
return -ENOMEM;
err = devlink_nl_fill(msg, devlink, DEVLINK_CMD_NEW,
info->snd_portid, info->snd_seq, 0);
if (err) {
nlmsg_free(msg);
return err;
}
return genlmsg_reply(msg, info);
}
static int
devlink_nl_cmd_get_dump_one(struct sk_buff *msg, struct devlink *devlink,
struct netlink_callback *cb)
{
return devlink_nl_fill(msg, devlink, DEVLINK_CMD_NEW,
NETLINK_CB(cb->skb).portid,
cb->nlh->nlmsg_seq, NLM_F_MULTI);
}
const struct devlink_cmd devl_cmd_get = {
.dump_one = devlink_nl_cmd_get_dump_one,
};