![Jiri Pirko](/assets/img/avatar_default.png)
Introduce devlink infrastructure for drivers to register and expose to userspace via generic Netlink interface. There are two basic objects defined: devlink - one instance for every "parent device", for example switch ASIC devlink port - one instance for every physical port of the device. This initial portion implements basic get/dump of objects to userspace. Also, port splitter and port type setting is implemented. Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
739 lines
18 KiB
C
739 lines
18 KiB
C
/*
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* net/core/devlink.c - Network physical/parent device Netlink interface
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*
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* Heavily inspired by net/wireless/
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* Copyright (c) 2016 Mellanox Technologies. All rights reserved.
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* Copyright (c) 2016 Jiri Pirko <jiri@mellanox.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/types.h>
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#include <linux/slab.h>
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#include <linux/gfp.h>
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#include <linux/device.h>
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#include <linux/list.h>
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#include <linux/netdevice.h>
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#include <rdma/ib_verbs.h>
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#include <net/netlink.h>
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#include <net/genetlink.h>
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#include <net/rtnetlink.h>
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#include <net/net_namespace.h>
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#include <net/sock.h>
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#include <net/devlink.h>
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static LIST_HEAD(devlink_list);
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/* devlink_mutex
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*
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* An overall lock guarding every operation coming from userspace.
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* It also guards devlink devices list and it is taken when
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* driver registers/unregisters it.
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*/
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static DEFINE_MUTEX(devlink_mutex);
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/* devlink_port_mutex
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*
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* Shared lock to guard lists of ports in all devlink devices.
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*/
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static DEFINE_MUTEX(devlink_port_mutex);
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static struct net *devlink_net(const struct devlink *devlink)
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{
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return read_pnet(&devlink->_net);
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}
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static void devlink_net_set(struct devlink *devlink, struct net *net)
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{
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write_pnet(&devlink->_net, net);
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}
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static struct devlink *devlink_get_from_attrs(struct net *net,
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struct nlattr **attrs)
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{
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struct devlink *devlink;
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char *busname;
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char *devname;
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if (!attrs[DEVLINK_ATTR_BUS_NAME] || !attrs[DEVLINK_ATTR_DEV_NAME])
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return ERR_PTR(-EINVAL);
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busname = nla_data(attrs[DEVLINK_ATTR_BUS_NAME]);
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devname = nla_data(attrs[DEVLINK_ATTR_DEV_NAME]);
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list_for_each_entry(devlink, &devlink_list, list) {
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if (strcmp(devlink->dev->bus->name, busname) == 0 &&
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strcmp(dev_name(devlink->dev), devname) == 0 &&
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net_eq(devlink_net(devlink), net))
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return devlink;
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}
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return ERR_PTR(-ENODEV);
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}
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static struct devlink *devlink_get_from_info(struct genl_info *info)
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{
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return devlink_get_from_attrs(genl_info_net(info), info->attrs);
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}
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static struct devlink_port *devlink_port_get_by_index(struct devlink *devlink,
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int port_index)
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{
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struct devlink_port *devlink_port;
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list_for_each_entry(devlink_port, &devlink->port_list, list) {
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if (devlink_port->index == port_index)
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return devlink_port;
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}
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return NULL;
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}
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static bool devlink_port_index_exists(struct devlink *devlink, int port_index)
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{
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return devlink_port_get_by_index(devlink, port_index);
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}
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static struct devlink_port *devlink_port_get_from_attrs(struct devlink *devlink,
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struct nlattr **attrs)
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{
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if (attrs[DEVLINK_ATTR_PORT_INDEX]) {
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u32 port_index = nla_get_u32(attrs[DEVLINK_ATTR_PORT_INDEX]);
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struct devlink_port *devlink_port;
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devlink_port = devlink_port_get_by_index(devlink, port_index);
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if (!devlink_port)
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return ERR_PTR(-ENODEV);
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return devlink_port;
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}
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return ERR_PTR(-EINVAL);
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}
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static struct devlink_port *devlink_port_get_from_info(struct devlink *devlink,
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struct genl_info *info)
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{
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return devlink_port_get_from_attrs(devlink, info->attrs);
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}
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#define DEVLINK_NL_FLAG_NEED_PORT BIT(0)
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static int devlink_nl_pre_doit(const struct genl_ops *ops,
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struct sk_buff *skb, struct genl_info *info)
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{
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struct devlink *devlink;
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mutex_lock(&devlink_mutex);
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devlink = devlink_get_from_info(info);
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if (IS_ERR(devlink)) {
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mutex_unlock(&devlink_mutex);
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return PTR_ERR(devlink);
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}
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info->user_ptr[0] = devlink;
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if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_PORT) {
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struct devlink_port *devlink_port;
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mutex_lock(&devlink_port_mutex);
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devlink_port = devlink_port_get_from_info(devlink, info);
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if (IS_ERR(devlink_port)) {
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mutex_unlock(&devlink_port_mutex);
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mutex_unlock(&devlink_mutex);
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return PTR_ERR(devlink_port);
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}
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info->user_ptr[1] = devlink_port;
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}
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return 0;
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}
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static void devlink_nl_post_doit(const struct genl_ops *ops,
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struct sk_buff *skb, struct genl_info *info)
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{
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if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_PORT)
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mutex_unlock(&devlink_port_mutex);
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mutex_unlock(&devlink_mutex);
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}
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static struct genl_family devlink_nl_family = {
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.id = GENL_ID_GENERATE,
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.name = DEVLINK_GENL_NAME,
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.version = DEVLINK_GENL_VERSION,
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.maxattr = DEVLINK_ATTR_MAX,
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.netnsok = true,
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.pre_doit = devlink_nl_pre_doit,
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.post_doit = devlink_nl_post_doit,
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};
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enum devlink_multicast_groups {
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DEVLINK_MCGRP_CONFIG,
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};
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static const struct genl_multicast_group devlink_nl_mcgrps[] = {
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[DEVLINK_MCGRP_CONFIG] = { .name = DEVLINK_GENL_MCGRP_CONFIG_NAME },
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};
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static int devlink_nl_put_handle(struct sk_buff *msg, struct devlink *devlink)
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{
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if (nla_put_string(msg, DEVLINK_ATTR_BUS_NAME, devlink->dev->bus->name))
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return -EMSGSIZE;
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if (nla_put_string(msg, DEVLINK_ATTR_DEV_NAME, dev_name(devlink->dev)))
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return -EMSGSIZE;
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return 0;
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}
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static int devlink_nl_fill(struct sk_buff *msg, struct devlink *devlink,
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enum devlink_command cmd, u32 portid,
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u32 seq, int flags)
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{
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void *hdr;
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hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
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if (!hdr)
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return -EMSGSIZE;
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if (devlink_nl_put_handle(msg, devlink))
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goto nla_put_failure;
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genlmsg_end(msg, hdr);
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return 0;
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nla_put_failure:
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genlmsg_cancel(msg, hdr);
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return -EMSGSIZE;
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}
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static void devlink_notify(struct devlink *devlink, enum devlink_command cmd)
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{
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struct sk_buff *msg;
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int err;
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WARN_ON(cmd != DEVLINK_CMD_NEW && cmd != DEVLINK_CMD_DEL);
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msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
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if (!msg)
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return;
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err = devlink_nl_fill(msg, devlink, cmd, 0, 0, 0);
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if (err) {
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nlmsg_free(msg);
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return;
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}
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genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
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msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
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}
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static int devlink_nl_port_fill(struct sk_buff *msg, struct devlink *devlink,
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struct devlink_port *devlink_port,
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enum devlink_command cmd, u32 portid,
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u32 seq, int flags)
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{
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void *hdr;
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hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
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if (!hdr)
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return -EMSGSIZE;
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if (devlink_nl_put_handle(msg, devlink))
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goto nla_put_failure;
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if (nla_put_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
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goto nla_put_failure;
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if (nla_put_u16(msg, DEVLINK_ATTR_PORT_TYPE, devlink_port->type))
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goto nla_put_failure;
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if (devlink_port->desired_type != DEVLINK_PORT_TYPE_NOTSET &&
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nla_put_u16(msg, DEVLINK_ATTR_PORT_DESIRED_TYPE,
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devlink_port->desired_type))
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goto nla_put_failure;
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if (devlink_port->type == DEVLINK_PORT_TYPE_ETH) {
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struct net_device *netdev = devlink_port->type_dev;
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if (netdev &&
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(nla_put_u32(msg, DEVLINK_ATTR_PORT_NETDEV_IFINDEX,
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netdev->ifindex) ||
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nla_put_string(msg, DEVLINK_ATTR_PORT_NETDEV_NAME,
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netdev->name)))
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goto nla_put_failure;
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}
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if (devlink_port->type == DEVLINK_PORT_TYPE_IB) {
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struct ib_device *ibdev = devlink_port->type_dev;
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if (ibdev &&
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nla_put_string(msg, DEVLINK_ATTR_PORT_IBDEV_NAME,
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ibdev->name))
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goto nla_put_failure;
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}
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if (devlink_port->split &&
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nla_put_u32(msg, DEVLINK_ATTR_PORT_SPLIT_GROUP,
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devlink_port->split_group))
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goto nla_put_failure;
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genlmsg_end(msg, hdr);
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return 0;
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nla_put_failure:
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genlmsg_cancel(msg, hdr);
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return -EMSGSIZE;
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}
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static void devlink_port_notify(struct devlink_port *devlink_port,
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enum devlink_command cmd)
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{
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struct devlink *devlink = devlink_port->devlink;
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struct sk_buff *msg;
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int err;
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if (!devlink_port->registered)
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return;
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WARN_ON(cmd != DEVLINK_CMD_PORT_NEW && cmd != DEVLINK_CMD_PORT_DEL);
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msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
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if (!msg)
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return;
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err = devlink_nl_port_fill(msg, devlink, devlink_port, cmd, 0, 0, 0);
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if (err) {
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nlmsg_free(msg);
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return;
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}
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genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink),
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msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
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}
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static int devlink_nl_cmd_get_doit(struct sk_buff *skb, struct genl_info *info)
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{
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struct devlink *devlink = info->user_ptr[0];
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struct sk_buff *msg;
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int err;
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msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
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if (!msg)
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return -ENOMEM;
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err = devlink_nl_fill(msg, devlink, DEVLINK_CMD_NEW,
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info->snd_portid, info->snd_seq, 0);
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if (err) {
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nlmsg_free(msg);
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return err;
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}
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return genlmsg_reply(msg, info);
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}
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static int devlink_nl_cmd_get_dumpit(struct sk_buff *msg,
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struct netlink_callback *cb)
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{
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struct devlink *devlink;
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int start = cb->args[0];
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int idx = 0;
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int err;
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mutex_lock(&devlink_mutex);
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list_for_each_entry(devlink, &devlink_list, list) {
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if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
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continue;
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if (idx < start) {
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idx++;
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continue;
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}
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err = devlink_nl_fill(msg, devlink, DEVLINK_CMD_NEW,
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NETLINK_CB(cb->skb).portid,
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cb->nlh->nlmsg_seq, NLM_F_MULTI);
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if (err)
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goto out;
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idx++;
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}
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out:
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mutex_unlock(&devlink_mutex);
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cb->args[0] = idx;
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return msg->len;
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}
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static int devlink_nl_cmd_port_get_doit(struct sk_buff *skb,
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struct genl_info *info)
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{
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struct devlink *devlink = info->user_ptr[0];
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struct devlink_port *devlink_port = info->user_ptr[1];
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struct sk_buff *msg;
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int err;
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msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
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if (!msg)
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return -ENOMEM;
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err = devlink_nl_port_fill(msg, devlink, devlink_port,
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DEVLINK_CMD_PORT_NEW,
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info->snd_portid, info->snd_seq, 0);
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if (err) {
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nlmsg_free(msg);
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return err;
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}
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return genlmsg_reply(msg, info);
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}
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static int devlink_nl_cmd_port_get_dumpit(struct sk_buff *msg,
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struct netlink_callback *cb)
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{
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struct devlink *devlink;
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struct devlink_port *devlink_port;
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int start = cb->args[0];
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int idx = 0;
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int err;
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mutex_lock(&devlink_mutex);
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mutex_lock(&devlink_port_mutex);
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list_for_each_entry(devlink, &devlink_list, list) {
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if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
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continue;
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list_for_each_entry(devlink_port, &devlink->port_list, list) {
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if (idx < start) {
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idx++;
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continue;
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}
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err = devlink_nl_port_fill(msg, devlink, devlink_port,
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DEVLINK_CMD_NEW,
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NETLINK_CB(cb->skb).portid,
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cb->nlh->nlmsg_seq,
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NLM_F_MULTI);
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if (err)
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goto out;
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idx++;
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}
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}
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out:
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mutex_unlock(&devlink_port_mutex);
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mutex_unlock(&devlink_mutex);
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cb->args[0] = idx;
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return msg->len;
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}
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static int devlink_port_type_set(struct devlink *devlink,
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struct devlink_port *devlink_port,
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enum devlink_port_type port_type)
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{
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int err;
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if (devlink->ops && devlink->ops->port_type_set) {
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if (port_type == DEVLINK_PORT_TYPE_NOTSET)
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return -EINVAL;
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err = devlink->ops->port_type_set(devlink_port, port_type);
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if (err)
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return err;
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devlink_port->desired_type = port_type;
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devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
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return 0;
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}
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return -EOPNOTSUPP;
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}
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static int devlink_nl_cmd_port_set_doit(struct sk_buff *skb,
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struct genl_info *info)
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{
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struct devlink *devlink = info->user_ptr[0];
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struct devlink_port *devlink_port = info->user_ptr[1];
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int err;
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if (info->attrs[DEVLINK_ATTR_PORT_TYPE]) {
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enum devlink_port_type port_type;
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port_type = nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_TYPE]);
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err = devlink_port_type_set(devlink, devlink_port, port_type);
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if (err)
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return err;
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}
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return 0;
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}
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static int devlink_port_split(struct devlink *devlink,
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u32 port_index, u32 count)
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{
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if (devlink->ops && devlink->ops->port_split)
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return devlink->ops->port_split(devlink, port_index, count);
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return -EOPNOTSUPP;
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}
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static int devlink_nl_cmd_port_split_doit(struct sk_buff *skb,
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struct genl_info *info)
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{
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struct devlink *devlink = info->user_ptr[0];
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u32 port_index;
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u32 count;
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if (!info->attrs[DEVLINK_ATTR_PORT_INDEX] ||
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!info->attrs[DEVLINK_ATTR_PORT_SPLIT_COUNT])
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return -EINVAL;
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port_index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
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count = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_SPLIT_COUNT]);
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return devlink_port_split(devlink, port_index, count);
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}
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static int devlink_port_unsplit(struct devlink *devlink, u32 port_index)
|
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{
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if (devlink->ops && devlink->ops->port_unsplit)
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return devlink->ops->port_unsplit(devlink, port_index);
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return -EOPNOTSUPP;
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}
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static int devlink_nl_cmd_port_unsplit_doit(struct sk_buff *skb,
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struct genl_info *info)
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{
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struct devlink *devlink = info->user_ptr[0];
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u32 port_index;
|
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|
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if (!info->attrs[DEVLINK_ATTR_PORT_INDEX])
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return -EINVAL;
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port_index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
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return devlink_port_unsplit(devlink, port_index);
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}
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|
|
static const struct nla_policy devlink_nl_policy[DEVLINK_ATTR_MAX + 1] = {
|
|
[DEVLINK_ATTR_BUS_NAME] = { .type = NLA_NUL_STRING },
|
|
[DEVLINK_ATTR_DEV_NAME] = { .type = NLA_NUL_STRING },
|
|
[DEVLINK_ATTR_PORT_INDEX] = { .type = NLA_U32 },
|
|
[DEVLINK_ATTR_PORT_TYPE] = { .type = NLA_U16 },
|
|
[DEVLINK_ATTR_PORT_SPLIT_COUNT] = { .type = NLA_U32 },
|
|
};
|
|
|
|
static const struct genl_ops devlink_nl_ops[] = {
|
|
{
|
|
.cmd = DEVLINK_CMD_GET,
|
|
.doit = devlink_nl_cmd_get_doit,
|
|
.dumpit = devlink_nl_cmd_get_dumpit,
|
|
.policy = devlink_nl_policy,
|
|
/* can be retrieved by unprivileged users */
|
|
},
|
|
{
|
|
.cmd = DEVLINK_CMD_PORT_GET,
|
|
.doit = devlink_nl_cmd_port_get_doit,
|
|
.dumpit = devlink_nl_cmd_port_get_dumpit,
|
|
.policy = devlink_nl_policy,
|
|
.internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
|
|
/* can be retrieved by unprivileged users */
|
|
},
|
|
{
|
|
.cmd = DEVLINK_CMD_PORT_SET,
|
|
.doit = devlink_nl_cmd_port_set_doit,
|
|
.policy = devlink_nl_policy,
|
|
.flags = GENL_ADMIN_PERM,
|
|
.internal_flags = DEVLINK_NL_FLAG_NEED_PORT,
|
|
},
|
|
{
|
|
.cmd = DEVLINK_CMD_PORT_SPLIT,
|
|
.doit = devlink_nl_cmd_port_split_doit,
|
|
.policy = devlink_nl_policy,
|
|
.flags = GENL_ADMIN_PERM,
|
|
},
|
|
{
|
|
.cmd = DEVLINK_CMD_PORT_UNSPLIT,
|
|
.doit = devlink_nl_cmd_port_unsplit_doit,
|
|
.policy = devlink_nl_policy,
|
|
.flags = GENL_ADMIN_PERM,
|
|
},
|
|
};
|
|
|
|
/**
|
|
* devlink_alloc - Allocate new devlink instance resources
|
|
*
|
|
* @ops: ops
|
|
* @priv_size: size of user private data
|
|
*
|
|
* Allocate new devlink instance resources, including devlink index
|
|
* and name.
|
|
*/
|
|
struct devlink *devlink_alloc(const struct devlink_ops *ops, size_t priv_size)
|
|
{
|
|
struct devlink *devlink;
|
|
|
|
devlink = kzalloc(sizeof(*devlink) + priv_size, GFP_KERNEL);
|
|
if (!devlink)
|
|
return NULL;
|
|
devlink->ops = ops;
|
|
devlink_net_set(devlink, &init_net);
|
|
INIT_LIST_HEAD(&devlink->port_list);
|
|
return devlink;
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_alloc);
|
|
|
|
/**
|
|
* devlink_register - Register devlink instance
|
|
*
|
|
* @devlink: devlink
|
|
*/
|
|
int devlink_register(struct devlink *devlink, struct device *dev)
|
|
{
|
|
mutex_lock(&devlink_mutex);
|
|
devlink->dev = dev;
|
|
list_add_tail(&devlink->list, &devlink_list);
|
|
devlink_notify(devlink, DEVLINK_CMD_NEW);
|
|
mutex_unlock(&devlink_mutex);
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_register);
|
|
|
|
/**
|
|
* devlink_unregister - Unregister devlink instance
|
|
*
|
|
* @devlink: devlink
|
|
*/
|
|
void devlink_unregister(struct devlink *devlink)
|
|
{
|
|
mutex_lock(&devlink_mutex);
|
|
devlink_notify(devlink, DEVLINK_CMD_DEL);
|
|
list_del(&devlink->list);
|
|
mutex_unlock(&devlink_mutex);
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_unregister);
|
|
|
|
/**
|
|
* devlink_free - Free devlink instance resources
|
|
*
|
|
* @devlink: devlink
|
|
*/
|
|
void devlink_free(struct devlink *devlink)
|
|
{
|
|
kfree(devlink);
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_free);
|
|
|
|
/**
|
|
* devlink_port_register - Register devlink port
|
|
*
|
|
* @devlink: devlink
|
|
* @devlink_port: devlink port
|
|
* @port_index
|
|
*
|
|
* Register devlink port with provided port index. User can use
|
|
* any indexing, even hw-related one. devlink_port structure
|
|
* is convenient to be embedded inside user driver private structure.
|
|
* Note that the caller should take care of zeroing the devlink_port
|
|
* structure.
|
|
*/
|
|
int devlink_port_register(struct devlink *devlink,
|
|
struct devlink_port *devlink_port,
|
|
unsigned int port_index)
|
|
{
|
|
mutex_lock(&devlink_port_mutex);
|
|
if (devlink_port_index_exists(devlink, port_index)) {
|
|
mutex_unlock(&devlink_port_mutex);
|
|
return -EEXIST;
|
|
}
|
|
devlink_port->devlink = devlink;
|
|
devlink_port->index = port_index;
|
|
devlink_port->type = DEVLINK_PORT_TYPE_NOTSET;
|
|
devlink_port->registered = true;
|
|
list_add_tail(&devlink_port->list, &devlink->port_list);
|
|
mutex_unlock(&devlink_port_mutex);
|
|
devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_port_register);
|
|
|
|
/**
|
|
* devlink_port_unregister - Unregister devlink port
|
|
*
|
|
* @devlink_port: devlink port
|
|
*/
|
|
void devlink_port_unregister(struct devlink_port *devlink_port)
|
|
{
|
|
devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_DEL);
|
|
mutex_lock(&devlink_port_mutex);
|
|
list_del(&devlink_port->list);
|
|
mutex_unlock(&devlink_port_mutex);
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_port_unregister);
|
|
|
|
static void __devlink_port_type_set(struct devlink_port *devlink_port,
|
|
enum devlink_port_type type,
|
|
void *type_dev)
|
|
{
|
|
devlink_port->type = type;
|
|
devlink_port->type_dev = type_dev;
|
|
devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
|
|
}
|
|
|
|
/**
|
|
* devlink_port_type_eth_set - Set port type to Ethernet
|
|
*
|
|
* @devlink_port: devlink port
|
|
* @netdev: related netdevice
|
|
*/
|
|
void devlink_port_type_eth_set(struct devlink_port *devlink_port,
|
|
struct net_device *netdev)
|
|
{
|
|
return __devlink_port_type_set(devlink_port,
|
|
DEVLINK_PORT_TYPE_ETH, netdev);
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_port_type_eth_set);
|
|
|
|
/**
|
|
* devlink_port_type_ib_set - Set port type to InfiniBand
|
|
*
|
|
* @devlink_port: devlink port
|
|
* @ibdev: related IB device
|
|
*/
|
|
void devlink_port_type_ib_set(struct devlink_port *devlink_port,
|
|
struct ib_device *ibdev)
|
|
{
|
|
return __devlink_port_type_set(devlink_port,
|
|
DEVLINK_PORT_TYPE_IB, ibdev);
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_port_type_ib_set);
|
|
|
|
/**
|
|
* devlink_port_type_clear - Clear port type
|
|
*
|
|
* @devlink_port: devlink port
|
|
*/
|
|
void devlink_port_type_clear(struct devlink_port *devlink_port)
|
|
{
|
|
return __devlink_port_type_set(devlink_port,
|
|
DEVLINK_PORT_TYPE_NOTSET, NULL);
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_port_type_clear);
|
|
|
|
/**
|
|
* devlink_port_split_set - Set port is split
|
|
*
|
|
* @devlink_port: devlink port
|
|
* @split_group: split group - identifies group split port is part of
|
|
*/
|
|
void devlink_port_split_set(struct devlink_port *devlink_port,
|
|
u32 split_group)
|
|
{
|
|
devlink_port->split = true;
|
|
devlink_port->split_group = split_group;
|
|
devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
|
|
}
|
|
EXPORT_SYMBOL_GPL(devlink_port_split_set);
|
|
|
|
static int __init devlink_module_init(void)
|
|
{
|
|
return genl_register_family_with_ops_groups(&devlink_nl_family,
|
|
devlink_nl_ops,
|
|
devlink_nl_mcgrps);
|
|
}
|
|
|
|
static void __exit devlink_module_exit(void)
|
|
{
|
|
genl_unregister_family(&devlink_nl_family);
|
|
}
|
|
|
|
module_init(devlink_module_init);
|
|
module_exit(devlink_module_exit);
|
|
|
|
MODULE_LICENSE("GPL v2");
|
|
MODULE_AUTHOR("Jiri Pirko <jiri@mellanox.com>");
|
|
MODULE_DESCRIPTION("Network physical device Netlink interface");
|
|
MODULE_ALIAS_GENL_FAMILY(DEVLINK_GENL_NAME);
|