507 lines
11 KiB
C
507 lines
11 KiB
C
|
// SPDX-License-Identifier: GPL-2.0-only
|
||
|
|
|
||
|
|
#include <linux/netdevice.h>
|
||
|
|
#include <linux/notifier.h>
|
||
|
|
#include <linux/rtnetlink.h>
|
||
|
|
#include <net/net_namespace.h>
|
||
|
|
#include <net/sock.h>
|
||
|
|
#include <net/xdp.h>
|
||
|
|
#include <net/xdp_sock.h>
|
||
|
|
#include <net/netdev_rx_queue.h>
|
||
|
|
#include <net/busy_poll.h>
|
||
|
|
|
||
|
|
#include "netdev-genl-gen.h"
|
||
|
|
#include "dev.h"
|
||
|
|
|
||
|
|
struct netdev_nl_dump_ctx {
|
||
|
|
unsigned long ifindex;
|
||
|
|
unsigned int rxq_idx;
|
||
|
|
unsigned int txq_idx;
|
||
|
|
unsigned int napi_id;
|
||
|
|
};
|
||
|
|
|
||
|
|
static struct netdev_nl_dump_ctx *netdev_dump_ctx(struct netlink_callback *cb)
|
||
|
|
{
|
||
|
|
NL_ASSERT_DUMP_CTX_FITS(struct netdev_nl_dump_ctx);
|
||
|
|
|
||
|
|
return (struct netdev_nl_dump_ctx *)cb->ctx;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int
|
||
|
|
netdev_nl_dev_fill(struct net_device *netdev, struct sk_buff *rsp,
|
||
|
|
const struct genl_info *info)
|
||
|
|
{
|
||
|
|
u64 xsk_features = 0;
|
||
|
|
u64 xdp_rx_meta = 0;
|
||
|
|
void *hdr;
|
||
|
|
|
||
|
|
hdr = genlmsg_iput(rsp, info);
|
||
|
|
if (!hdr)
|
||
|
|
return -EMSGSIZE;
|
||
|
|
|
||
|
|
#define XDP_METADATA_KFUNC(_, flag, __, xmo) \
|
||
|
|
if (netdev->xdp_metadata_ops && netdev->xdp_metadata_ops->xmo) \
|
||
|
|
xdp_rx_meta |= flag;
|
||
|
|
XDP_METADATA_KFUNC_xxx
|
||
|
|
#undef XDP_METADATA_KFUNC
|
||
|
|
|
||
|
|
if (netdev->xsk_tx_metadata_ops) {
|
||
|
|
if (netdev->xsk_tx_metadata_ops->tmo_fill_timestamp)
|
||
|
|
xsk_features |= NETDEV_XSK_FLAGS_TX_TIMESTAMP;
|
||
|
|
if (netdev->xsk_tx_metadata_ops->tmo_request_checksum)
|
||
|
|
xsk_features |= NETDEV_XSK_FLAGS_TX_CHECKSUM;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (nla_put_u32(rsp, NETDEV_A_DEV_IFINDEX, netdev->ifindex) ||
|
||
|
|
nla_put_u64_64bit(rsp, NETDEV_A_DEV_XDP_FEATURES,
|
||
|
|
netdev->xdp_features, NETDEV_A_DEV_PAD) ||
|
||
|
|
nla_put_u64_64bit(rsp, NETDEV_A_DEV_XDP_RX_METADATA_FEATURES,
|
||
|
|
xdp_rx_meta, NETDEV_A_DEV_PAD) ||
|
||
|
|
nla_put_u64_64bit(rsp, NETDEV_A_DEV_XSK_FEATURES,
|
||
|
|
xsk_features, NETDEV_A_DEV_PAD)) {
|
||
|
|
genlmsg_cancel(rsp, hdr);
|
||
|
|
return -EINVAL;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (netdev->xdp_features & NETDEV_XDP_ACT_XSK_ZEROCOPY) {
|
||
|
|
if (nla_put_u32(rsp, NETDEV_A_DEV_XDP_ZC_MAX_SEGS,
|
||
|
|
netdev->xdp_zc_max_segs)) {
|
||
|
|
genlmsg_cancel(rsp, hdr);
|
||
|
|
return -EINVAL;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
genlmsg_end(rsp, hdr);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
netdev_genl_dev_notify(struct net_device *netdev, int cmd)
|
||
|
|
{
|
||
|
|
struct genl_info info;
|
||
|
|
struct sk_buff *ntf;
|
||
|
|
|
||
|
|
if (!genl_has_listeners(&netdev_nl_family, dev_net(netdev),
|
||
|
|
NETDEV_NLGRP_MGMT))
|
||
|
|
return;
|
||
|
|
|
||
|
|
genl_info_init_ntf(&info, &netdev_nl_family, cmd);
|
||
|
|
|
||
|
|
ntf = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
|
||
|
|
if (!ntf)
|
||
|
|
return;
|
||
|
|
|
||
|
|
if (netdev_nl_dev_fill(netdev, ntf, &info)) {
|
||
|
|
nlmsg_free(ntf);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
genlmsg_multicast_netns(&netdev_nl_family, dev_net(netdev), ntf,
|
||
|
|
0, NETDEV_NLGRP_MGMT, GFP_KERNEL);
|
||
|
|
}
|
||
|
|
|
||
|
|
int netdev_nl_dev_get_doit(struct sk_buff *skb, struct genl_info *info)
|
||
|
|
{
|
||
|
|
struct net_device *netdev;
|
||
|
|
struct sk_buff *rsp;
|
||
|
|
u32 ifindex;
|
||
|
|
int err;
|
||
|
|
|
||
|
|
if (GENL_REQ_ATTR_CHECK(info, NETDEV_A_DEV_IFINDEX))
|
||
|
|
return -EINVAL;
|
||
|
|
|
||
|
|
ifindex = nla_get_u32(info->attrs[NETDEV_A_DEV_IFINDEX]);
|
||
|
|
|
||
|
|
rsp = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
|
||
|
|
if (!rsp)
|
||
|
|
return -ENOMEM;
|
||
|
|
|
||
|
|
rtnl_lock();
|
||
|
|
|
||
|
|
netdev = __dev_get_by_index(genl_info_net(info), ifindex);
|
||
|
|
if (netdev)
|
||
|
|
err = netdev_nl_dev_fill(netdev, rsp, info);
|
||
|
|
else
|
||
|
|
err = -ENODEV;
|
||
|
|
|
||
|
|
rtnl_unlock();
|
||
|
|
|
||
|
|
if (err)
|
||
|
|
goto err_free_msg;
|
||
|
|
|
||
|
|
return genlmsg_reply(rsp, info);
|
||
|
|
|
||
|
|
err_free_msg:
|
||
|
|
nlmsg_free(rsp);
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
|
||
|
|
int netdev_nl_dev_get_dumpit(struct sk_buff *skb, struct netlink_callback *cb)
|
||
|
|
{
|
||
|
|
struct netdev_nl_dump_ctx *ctx = netdev_dump_ctx(cb);
|
||
|
|
struct net *net = sock_net(skb->sk);
|
||
|
|
struct net_device *netdev;
|
||
|
|
int err = 0;
|
||
|
|
|
||
|
|
rtnl_lock();
|
||
|
|
for_each_netdev_dump(net, netdev, ctx->ifindex) {
|
||
|
|
err = netdev_nl_dev_fill(netdev, skb, genl_info_dump(cb));
|
||
|
|
if (err < 0)
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
rtnl_unlock();
|
||
|
|
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int
|
||
|
|
netdev_nl_napi_fill_one(struct sk_buff *rsp, struct napi_struct *napi,
|
||
|
|
const struct genl_info *info)
|
||
|
|
{
|
||
|
|
void *hdr;
|
||
|
|
pid_t pid;
|
||
|
|
|
||
|
|
if (WARN_ON_ONCE(!napi->dev))
|
||
|
|
return -EINVAL;
|
||
|
|
if (!(napi->dev->flags & IFF_UP))
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
hdr = genlmsg_iput(rsp, info);
|
||
|
|
if (!hdr)
|
||
|
|
return -EMSGSIZE;
|
||
|
|
|
||
|
|
if (napi->napi_id >= MIN_NAPI_ID &&
|
||
|
|
nla_put_u32(rsp, NETDEV_A_NAPI_ID, napi->napi_id))
|
||
|
|
goto nla_put_failure;
|
||
|
|
|
||
|
|
if (nla_put_u32(rsp, NETDEV_A_NAPI_IFINDEX, napi->dev->ifindex))
|
||
|
|
goto nla_put_failure;
|
||
|
|
|
||
|
|
if (napi->irq >= 0 && nla_put_u32(rsp, NETDEV_A_NAPI_IRQ, napi->irq))
|
||
|
|
goto nla_put_failure;
|
||
|
|
|
||
|
|
if (napi->thread) {
|
||
|
|
pid = task_pid_nr(napi->thread);
|
||
|
|
if (nla_put_u32(rsp, NETDEV_A_NAPI_PID, pid))
|
||
|
|
goto nla_put_failure;
|
||
|
|
}
|
||
|
|
|
||
|
|
genlmsg_end(rsp, hdr);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
nla_put_failure:
|
||
|
|
genlmsg_cancel(rsp, hdr);
|
||
|
|
return -EMSGSIZE;
|
||
|
|
}
|
||
|
|
|
||
|
|
int netdev_nl_napi_get_doit(struct sk_buff *skb, struct genl_info *info)
|
||
|
|
{
|
||
|
|
struct napi_struct *napi;
|
||
|
|
struct sk_buff *rsp;
|
||
|
|
u32 napi_id;
|
||
|
|
int err;
|
||
|
|
|
||
|
|
if (GENL_REQ_ATTR_CHECK(info, NETDEV_A_NAPI_ID))
|
||
|
|
return -EINVAL;
|
||
|
|
|
||
|
|
napi_id = nla_get_u32(info->attrs[NETDEV_A_NAPI_ID]);
|
||
|
|
|
||
|
|
rsp = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
|
||
|
|
if (!rsp)
|
||
|
|
return -ENOMEM;
|
||
|
|
|
||
|
|
rtnl_lock();
|
||
|
|
|
||
|
|
napi = napi_by_id(napi_id);
|
||
|
|
if (napi)
|
||
|
|
err = netdev_nl_napi_fill_one(rsp, napi, info);
|
||
|
|
else
|
||
|
|
err = -EINVAL;
|
||
|
|
|
||
|
|
rtnl_unlock();
|
||
|
|
|
||
|
|
if (err)
|
||
|
|
goto err_free_msg;
|
||
|
|
|
||
|
|
return genlmsg_reply(rsp, info);
|
||
|
|
|
||
|
|
err_free_msg:
|
||
|
|
nlmsg_free(rsp);
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int
|
||
|
|
netdev_nl_napi_dump_one(struct net_device *netdev, struct sk_buff *rsp,
|
||
|
|
const struct genl_info *info,
|
||
|
|
struct netdev_nl_dump_ctx *ctx)
|
||
|
|
{
|
||
|
|
struct napi_struct *napi;
|
||
|
|
int err = 0;
|
||
|
|
|
||
|
|
if (!(netdev->flags & IFF_UP))
|
||
|
|
return err;
|
||
|
|
|
||
|
|
list_for_each_entry(napi, &netdev->napi_list, dev_list) {
|
||
|
|
if (ctx->napi_id && napi->napi_id >= ctx->napi_id)
|
||
|
|
continue;
|
||
|
|
|
||
|
|
err = netdev_nl_napi_fill_one(rsp, napi, info);
|
||
|
|
if (err)
|
||
|
|
return err;
|
||
|
|
ctx->napi_id = napi->napi_id;
|
||
|
|
}
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
|
||
|
|
int netdev_nl_napi_get_dumpit(struct sk_buff *skb, struct netlink_callback *cb)
|
||
|
|
{
|
||
|
|
struct netdev_nl_dump_ctx *ctx = netdev_dump_ctx(cb);
|
||
|
|
const struct genl_info *info = genl_info_dump(cb);
|
||
|
|
struct net *net = sock_net(skb->sk);
|
||
|
|
struct net_device *netdev;
|
||
|
|
u32 ifindex = 0;
|
||
|
|
int err = 0;
|
||
|
|
|
||
|
|
if (info->attrs[NETDEV_A_NAPI_IFINDEX])
|
||
|
|
ifindex = nla_get_u32(info->attrs[NETDEV_A_NAPI_IFINDEX]);
|
||
|
|
|
||
|
|
rtnl_lock();
|
||
|
|
if (ifindex) {
|
||
|
|
netdev = __dev_get_by_index(net, ifindex);
|
||
|
|
if (netdev)
|
||
|
|
err = netdev_nl_napi_dump_one(netdev, skb, info, ctx);
|
||
|
|
else
|
||
|
|
err = -ENODEV;
|
||
|
|
} else {
|
||
|
|
for_each_netdev_dump(net, netdev, ctx->ifindex) {
|
||
|
|
err = netdev_nl_napi_dump_one(netdev, skb, info, ctx);
|
||
|
|
if (err < 0)
|
||
|
|
break;
|
||
|
|
ctx->napi_id = 0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
rtnl_unlock();
|
||
|
|
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int
|
||
|
|
netdev_nl_queue_fill_one(struct sk_buff *rsp, struct net_device *netdev,
|
||
|
|
u32 q_idx, u32 q_type, const struct genl_info *info)
|
||
|
|
{
|
||
|
|
struct netdev_rx_queue *rxq;
|
||
|
|
struct netdev_queue *txq;
|
||
|
|
void *hdr;
|
||
|
|
|
||
|
|
hdr = genlmsg_iput(rsp, info);
|
||
|
|
if (!hdr)
|
||
|
|
return -EMSGSIZE;
|
||
|
|
|
||
|
|
if (nla_put_u32(rsp, NETDEV_A_QUEUE_ID, q_idx) ||
|
||
|
|
nla_put_u32(rsp, NETDEV_A_QUEUE_TYPE, q_type) ||
|
||
|
|
nla_put_u32(rsp, NETDEV_A_QUEUE_IFINDEX, netdev->ifindex))
|
||
|
|
goto nla_put_failure;
|
||
|
|
|
||
|
|
switch (q_type) {
|
||
|
|
case NETDEV_QUEUE_TYPE_RX:
|
||
|
|
rxq = __netif_get_rx_queue(netdev, q_idx);
|
||
|
|
if (rxq->napi && nla_put_u32(rsp, NETDEV_A_QUEUE_NAPI_ID,
|
||
|
|
rxq->napi->napi_id))
|
||
|
|
goto nla_put_failure;
|
||
|
|
break;
|
||
|
|
case NETDEV_QUEUE_TYPE_TX:
|
||
|
|
txq = netdev_get_tx_queue(netdev, q_idx);
|
||
|
|
if (txq->napi && nla_put_u32(rsp, NETDEV_A_QUEUE_NAPI_ID,
|
||
|
|
txq->napi->napi_id))
|
||
|
|
goto nla_put_failure;
|
||
|
|
}
|
||
|
|
|
||
|
|
genlmsg_end(rsp, hdr);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
nla_put_failure:
|
||
|
|
genlmsg_cancel(rsp, hdr);
|
||
|
|
return -EMSGSIZE;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int netdev_nl_queue_validate(struct net_device *netdev, u32 q_id,
|
||
|
|
u32 q_type)
|
||
|
|
{
|
||
|
|
switch (q_type) {
|
||
|
|
case NETDEV_QUEUE_TYPE_RX:
|
||
|
|
if (q_id >= netdev->real_num_rx_queues)
|
||
|
|
return -EINVAL;
|
||
|
|
return 0;
|
||
|
|
case NETDEV_QUEUE_TYPE_TX:
|
||
|
|
if (q_id >= netdev->real_num_tx_queues)
|
||
|
|
return -EINVAL;
|
||
|
|
}
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int
|
||
|
|
netdev_nl_queue_fill(struct sk_buff *rsp, struct net_device *netdev, u32 q_idx,
|
||
|
|
u32 q_type, const struct genl_info *info)
|
||
|
|
{
|
||
|
|
int err = 0;
|
||
|
|
|
||
|
|
if (!(netdev->flags & IFF_UP))
|
||
|
|
return err;
|
||
|
|
|
||
|
|
err = netdev_nl_queue_validate(netdev, q_idx, q_type);
|
||
|
|
if (err)
|
||
|
|
return err;
|
||
|
|
|
||
|
|
return netdev_nl_queue_fill_one(rsp, netdev, q_idx, q_type, info);
|
||
|
|
}
|
||
|
|
|
||
|
|
int netdev_nl_queue_get_doit(struct sk_buff *skb, struct genl_info *info)
|
||
|
|
{
|
||
|
|
u32 q_id, q_type, ifindex;
|
||
|
|
struct net_device *netdev;
|
||
|
|
struct sk_buff *rsp;
|
||
|
|
int err;
|
||
|
|
|
||
|
|
if (GENL_REQ_ATTR_CHECK(info, NETDEV_A_QUEUE_ID) ||
|
||
|
|
GENL_REQ_ATTR_CHECK(info, NETDEV_A_QUEUE_TYPE) ||
|
||
|
|
GENL_REQ_ATTR_CHECK(info, NETDEV_A_QUEUE_IFINDEX))
|
||
|
|
return -EINVAL;
|
||
|
|
|
||
|
|
q_id = nla_get_u32(info->attrs[NETDEV_A_QUEUE_ID]);
|
||
|
|
q_type = nla_get_u32(info->attrs[NETDEV_A_QUEUE_TYPE]);
|
||
|
|
ifindex = nla_get_u32(info->attrs[NETDEV_A_QUEUE_IFINDEX]);
|
||
|
|
|
||
|
|
rsp = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
|
||
|
|
if (!rsp)
|
||
|
|
return -ENOMEM;
|
||
|
|
|
||
|
|
rtnl_lock();
|
||
|
|
|
||
|
|
netdev = __dev_get_by_index(genl_info_net(info), ifindex);
|
||
|
|
if (netdev)
|
||
|
|
err = netdev_nl_queue_fill(rsp, netdev, q_id, q_type, info);
|
||
|
|
else
|
||
|
|
err = -ENODEV;
|
||
|
|
|
||
|
|
rtnl_unlock();
|
||
|
|
|
||
|
|
if (err)
|
||
|
|
goto err_free_msg;
|
||
|
|
|
||
|
|
return genlmsg_reply(rsp, info);
|
||
|
|
|
||
|
|
err_free_msg:
|
||
|
|
nlmsg_free(rsp);
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int
|
||
|
|
netdev_nl_queue_dump_one(struct net_device *netdev, struct sk_buff *rsp,
|
||
|
|
const struct genl_info *info,
|
||
|
|
struct netdev_nl_dump_ctx *ctx)
|
||
|
|
{
|
||
|
|
int err = 0;
|
||
|
|
int i;
|
||
|
|
|
||
|
|
if (!(netdev->flags & IFF_UP))
|
||
|
|
return err;
|
||
|
|
|
||
|
|
for (i = ctx->rxq_idx; i < netdev->real_num_rx_queues;) {
|
||
|
|
err = netdev_nl_queue_fill_one(rsp, netdev, i,
|
||
|
|
NETDEV_QUEUE_TYPE_RX, info);
|
||
|
|
if (err)
|
||
|
|
return err;
|
||
|
|
ctx->rxq_idx = i++;
|
||
|
|
}
|
||
|
|
for (i = ctx->txq_idx; i < netdev->real_num_tx_queues;) {
|
||
|
|
err = netdev_nl_queue_fill_one(rsp, netdev, i,
|
||
|
|
NETDEV_QUEUE_TYPE_TX, info);
|
||
|
|
if (err)
|
||
|
|
return err;
|
||
|
|
ctx->txq_idx = i++;
|
||
|
|
}
|
||
|
|
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
|
||
|
|
int netdev_nl_queue_get_dumpit(struct sk_buff *skb, struct netlink_callback *cb)
|
||
|
|
{
|
||
|
|
struct netdev_nl_dump_ctx *ctx = netdev_dump_ctx(cb);
|
||
|
|
const struct genl_info *info = genl_info_dump(cb);
|
||
|
|
struct net *net = sock_net(skb->sk);
|
||
|
|
struct net_device *netdev;
|
||
|
|
u32 ifindex = 0;
|
||
|
|
int err = 0;
|
||
|
|
|
||
|
|
if (info->attrs[NETDEV_A_QUEUE_IFINDEX])
|
||
|
|
ifindex = nla_get_u32(info->attrs[NETDEV_A_QUEUE_IFINDEX]);
|
||
|
|
|
||
|
|
rtnl_lock();
|
||
|
|
if (ifindex) {
|
||
|
|
netdev = __dev_get_by_index(net, ifindex);
|
||
|
|
if (netdev)
|
||
|
|
err = netdev_nl_queue_dump_one(netdev, skb, info, ctx);
|
||
|
|
else
|
||
|
|
err = -ENODEV;
|
||
|
|
} else {
|
||
|
|
for_each_netdev_dump(net, netdev, ctx->ifindex) {
|
||
|
|
err = netdev_nl_queue_dump_one(netdev, skb, info, ctx);
|
||
|
|
if (err < 0)
|
||
|
|
break;
|
||
|
|
ctx->rxq_idx = 0;
|
||
|
|
ctx->txq_idx = 0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
rtnl_unlock();
|
||
|
|
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int netdev_genl_netdevice_event(struct notifier_block *nb,
|
||
|
|
unsigned long event, void *ptr)
|
||
|
|
{
|
||
|
|
struct net_device *netdev = netdev_notifier_info_to_dev(ptr);
|
||
|
|
|
||
|
|
switch (event) {
|
||
|
|
case NETDEV_REGISTER:
|
||
|
|
netdev_genl_dev_notify(netdev, NETDEV_CMD_DEV_ADD_NTF);
|
||
|
|
break;
|
||
|
|
case NETDEV_UNREGISTER:
|
||
|
|
netdev_genl_dev_notify(netdev, NETDEV_CMD_DEV_DEL_NTF);
|
||
|
|
break;
|
||
|
|
case NETDEV_XDP_FEAT_CHANGE:
|
||
|
|
netdev_genl_dev_notify(netdev, NETDEV_CMD_DEV_CHANGE_NTF);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
return NOTIFY_OK;
|
||
|
|
}
|
||
|
|
|
||
|
|
static struct notifier_block netdev_genl_nb = {
|
||
|
|
.notifier_call = netdev_genl_netdevice_event,
|
||
|
|
};
|
||
|
|
|
||
|
|
static int __init netdev_genl_init(void)
|
||
|
|
{
|
||
|
|
int err;
|
||
|
|
|
||
|
|
err = register_netdevice_notifier(&netdev_genl_nb);
|
||
|
|
if (err)
|
||
|
|
return err;
|
||
|
|
|
||
|
|
err = genl_register_family(&netdev_nl_family);
|
||
|
|
if (err)
|
||
|
|
goto err_unreg_ntf;
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
err_unreg_ntf:
|
||
|
|
unregister_netdevice_notifier(&netdev_genl_nb);
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
|
||
|
|
subsys_initcall(netdev_genl_init);
|