blob: abb0da9d7b4b7c8a21a91341f56852db41f06c67 [file] [log] [blame]
/*
* net/core/devlink.c - Network physical/parent device Netlink interface
*
* Heavily inspired by net/wireless/
* Copyright (c) 2016 Mellanox Technologies. All rights reserved.
* Copyright (c) 2016 Jiri Pirko <jiri@mellanox.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/types.h>
#include <linux/slab.h>
#include <linux/gfp.h>
#include <linux/device.h>
#include <linux/list.h>
#include <linux/netdevice.h>
#include <rdma/ib_verbs.h>
#include <net/netlink.h>
#include <net/genetlink.h>
#include <net/rtnetlink.h>
#include <net/net_namespace.h>
#include <net/sock.h>
#include <net/devlink.h>
#define CREATE_TRACE_POINTS
#include <trace/events/devlink.h>
static struct devlink_dpipe_field devlink_dpipe_fields_ethernet[] = {
{
.name = "destination mac",
.id = DEVLINK_DPIPE_FIELD_ETHERNET_DST_MAC,
.bitwidth = 48,
},
};
struct devlink_dpipe_header devlink_dpipe_header_ethernet = {
.name = "ethernet",
.id = DEVLINK_DPIPE_HEADER_ETHERNET,
.fields = devlink_dpipe_fields_ethernet,
.fields_count = ARRAY_SIZE(devlink_dpipe_fields_ethernet),
.global = true,
};
EXPORT_SYMBOL(devlink_dpipe_header_ethernet);
static struct devlink_dpipe_field devlink_dpipe_fields_ipv4[] = {
{
.name = "destination ip",
.id = DEVLINK_DPIPE_FIELD_IPV4_DST_IP,
.bitwidth = 32,
},
};
struct devlink_dpipe_header devlink_dpipe_header_ipv4 = {
.name = "ipv4",
.id = DEVLINK_DPIPE_HEADER_IPV4,
.fields = devlink_dpipe_fields_ipv4,
.fields_count = ARRAY_SIZE(devlink_dpipe_fields_ipv4),
.global = true,
};
EXPORT_SYMBOL(devlink_dpipe_header_ipv4);
static struct devlink_dpipe_field devlink_dpipe_fields_ipv6[] = {
{
.name = "destination ip",
.id = DEVLINK_DPIPE_FIELD_IPV6_DST_IP,
.bitwidth = 128,
},
};
struct devlink_dpipe_header devlink_dpipe_header_ipv6 = {
.name = "ipv6",
.id = DEVLINK_DPIPE_HEADER_IPV6,
.fields = devlink_dpipe_fields_ipv6,
.fields_count = ARRAY_SIZE(devlink_dpipe_fields_ipv6),
.global = true,
};
EXPORT_SYMBOL(devlink_dpipe_header_ipv6);
EXPORT_TRACEPOINT_SYMBOL_GPL(devlink_hwmsg);
static LIST_HEAD(devlink_list);
/* devlink_mutex
*
* An overall lock guarding every operation coming from userspace.
* It also guards devlink devices list and it is taken when
* driver registers/unregisters it.
*/
static DEFINE_MUTEX(devlink_mutex);
static struct net *devlink_net(const struct devlink *devlink)
{
return read_pnet(&devlink->_net);
}
static void devlink_net_set(struct devlink *devlink, struct net *net)
{
write_pnet(&devlink->_net, net);
}
static struct devlink *devlink_get_from_attrs(struct net *net,
struct nlattr **attrs)
{
struct devlink *devlink;
char *busname;
char *devname;
if (!attrs[DEVLINK_ATTR_BUS_NAME] || !attrs[DEVLINK_ATTR_DEV_NAME])
return ERR_PTR(-EINVAL);
busname = nla_data(attrs[DEVLINK_ATTR_BUS_NAME]);
devname = nla_data(attrs[DEVLINK_ATTR_DEV_NAME]);
list_for_each_entry(devlink, &devlink_list, list) {
if (strcmp(devlink->dev->bus->name, busname) == 0 &&
strcmp(dev_name(devlink->dev), devname) == 0 &&
net_eq(devlink_net(devlink), net))
return devlink;
}
return ERR_PTR(-ENODEV);
}
static struct devlink *devlink_get_from_info(struct genl_info *info)
{
return devlink_get_from_attrs(genl_info_net(info), info->attrs);
}
static struct devlink_port *devlink_port_get_by_index(struct devlink *devlink,
int port_index)
{
struct devlink_port *devlink_port;
list_for_each_entry(devlink_port, &devlink->port_list, list) {
if (devlink_port->index == port_index)
return devlink_port;
}
return NULL;
}
static bool devlink_port_index_exists(struct devlink *devlink, int port_index)
{
return devlink_port_get_by_index(devlink, port_index);
}
static struct devlink_port *devlink_port_get_from_attrs(struct devlink *devlink,
struct nlattr **attrs)
{
if (attrs[DEVLINK_ATTR_PORT_INDEX]) {
u32 port_index = nla_get_u32(attrs[DEVLINK_ATTR_PORT_INDEX]);
struct devlink_port *devlink_port;
devlink_port = devlink_port_get_by_index(devlink, port_index);
if (!devlink_port)
return ERR_PTR(-ENODEV);
return devlink_port;
}
return ERR_PTR(-EINVAL);
}
static struct devlink_port *devlink_port_get_from_info(struct devlink *devlink,
struct genl_info *info)
{
return devlink_port_get_from_attrs(devlink, info->attrs);
}
struct devlink_sb {
struct list_head list;
unsigned int index;
u32 size;
u16 ingress_pools_count;
u16 egress_pools_count;
u16 ingress_tc_count;
u16 egress_tc_count;
};
static u16 devlink_sb_pool_count(struct devlink_sb *devlink_sb)
{
return devlink_sb->ingress_pools_count + devlink_sb->egress_pools_count;
}
static struct devlink_sb *devlink_sb_get_by_index(struct devlink *devlink,
unsigned int sb_index)
{
struct devlink_sb *devlink_sb;
list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
if (devlink_sb->index == sb_index)
return devlink_sb;
}
return NULL;
}
static bool devlink_sb_index_exists(struct devlink *devlink,
unsigned int sb_index)
{
return devlink_sb_get_by_index(devlink, sb_index);
}
static struct devlink_sb *devlink_sb_get_from_attrs(struct devlink *devlink,
struct nlattr **attrs)
{
if (attrs[DEVLINK_ATTR_SB_INDEX]) {
u32 sb_index = nla_get_u32(attrs[DEVLINK_ATTR_SB_INDEX]);
struct devlink_sb *devlink_sb;
devlink_sb = devlink_sb_get_by_index(devlink, sb_index);
if (!devlink_sb)
return ERR_PTR(-ENODEV);
return devlink_sb;
}
return ERR_PTR(-EINVAL);
}
static struct devlink_sb *devlink_sb_get_from_info(struct devlink *devlink,
struct genl_info *info)
{
return devlink_sb_get_from_attrs(devlink, info->attrs);
}
static int devlink_sb_pool_index_get_from_attrs(struct devlink_sb *devlink_sb,
struct nlattr **attrs,
u16 *p_pool_index)
{
u16 val;
if (!attrs[DEVLINK_ATTR_SB_POOL_INDEX])
return -EINVAL;
val = nla_get_u16(attrs[DEVLINK_ATTR_SB_POOL_INDEX]);
if (val >= devlink_sb_pool_count(devlink_sb))
return -EINVAL;
*p_pool_index = val;
return 0;
}
static int devlink_sb_pool_index_get_from_info(struct devlink_sb *devlink_sb,
struct genl_info *info,
u16 *p_pool_index)
{
return devlink_sb_pool_index_get_from_attrs(devlink_sb, info->attrs,
p_pool_index);
}
static int
devlink_sb_pool_type_get_from_attrs(struct nlattr **attrs,
enum devlink_sb_pool_type *p_pool_type)
{
u8 val;
if (!attrs[DEVLINK_ATTR_SB_POOL_TYPE])
return -EINVAL;
val = nla_get_u8(attrs[DEVLINK_ATTR_SB_POOL_TYPE]);
if (val != DEVLINK_SB_POOL_TYPE_INGRESS &&
val != DEVLINK_SB_POOL_TYPE_EGRESS)
return -EINVAL;
*p_pool_type = val;
return 0;
}
static int
devlink_sb_pool_type_get_from_info(struct genl_info *info,
enum devlink_sb_pool_type *p_pool_type)
{
return devlink_sb_pool_type_get_from_attrs(info->attrs, p_pool_type);
}
static int
devlink_sb_th_type_get_from_attrs(struct nlattr **attrs,
enum devlink_sb_threshold_type *p_th_type)
{
u8 val;
if (!attrs[DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE])
return -EINVAL;
val = nla_get_u8(attrs[DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE]);
if (val != DEVLINK_SB_THRESHOLD_TYPE_STATIC &&
val != DEVLINK_SB_THRESHOLD_TYPE_DYNAMIC)
return -EINVAL;
*p_th_type = val;
return 0;
}
static int
devlink_sb_th_type_get_from_info(struct genl_info *info,
enum devlink_sb_threshold_type *p_th_type)
{
return devlink_sb_th_type_get_from_attrs(info->attrs, p_th_type);
}
static int
devlink_sb_tc_index_get_from_attrs(struct devlink_sb *devlink_sb,
struct nlattr **attrs,
enum devlink_sb_pool_type pool_type,
u16 *p_tc_index)
{
u16 val;
if (!attrs[DEVLINK_ATTR_SB_TC_INDEX])
return -EINVAL;
val = nla_get_u16(attrs[DEVLINK_ATTR_SB_TC_INDEX]);
if (pool_type == DEVLINK_SB_POOL_TYPE_INGRESS &&
val >= devlink_sb->ingress_tc_count)
return -EINVAL;
if (pool_type == DEVLINK_SB_POOL_TYPE_EGRESS &&
val >= devlink_sb->egress_tc_count)
return -EINVAL;
*p_tc_index = val;
return 0;
}
static int
devlink_sb_tc_index_get_from_info(struct devlink_sb *devlink_sb,
struct genl_info *info,
enum devlink_sb_pool_type pool_type,
u16 *p_tc_index)
{
return devlink_sb_tc_index_get_from_attrs(devlink_sb, info->attrs,
pool_type, p_tc_index);
}
struct devlink_region {
struct devlink *devlink;
struct list_head list;
const char *name;
struct list_head snapshot_list;
u32 max_snapshots;
u32 cur_snapshots;
u64 size;
};
struct devlink_snapshot {
struct list_head list;
struct devlink_region *region;
devlink_snapshot_data_dest_t *data_destructor;
u64 data_len;
u8 *data;
u32 id;
};
static struct devlink_region *
devlink_region_get_by_name(struct devlink *devlink, const char *region_name)
{
struct devlink_region *region;
list_for_each_entry(region, &devlink->region_list, list)
if (!strcmp(region->name, region_name))
return region;
return NULL;
}
static struct devlink_snapshot *
devlink_region_snapshot_get_by_id(struct devlink_region *region, u32 id)
{
struct devlink_snapshot *snapshot;
list_for_each_entry(snapshot, &region->snapshot_list, list)
if (snapshot->id == id)
return snapshot;
return NULL;
}
static void devlink_region_snapshot_del(struct devlink_snapshot *snapshot)
{
snapshot->region->cur_snapshots--;
list_del(&snapshot->list);
(*snapshot->data_destructor)(snapshot->data);
kfree(snapshot);
}
#define DEVLINK_NL_FLAG_NEED_DEVLINK BIT(0)
#define DEVLINK_NL_FLAG_NEED_PORT BIT(1)
#define DEVLINK_NL_FLAG_NEED_SB BIT(2)
/* The per devlink instance lock is taken by default in the pre-doit
* operation, yet several commands do not require this. The global
* devlink lock is taken and protects from disruption by user-calls.
*/
#define DEVLINK_NL_FLAG_NO_LOCK BIT(3)
static int devlink_nl_pre_doit(const struct genl_ops *ops,
struct sk_buff *skb, struct genl_info *info)
{
struct devlink *devlink;
int err;
mutex_lock(&devlink_mutex);
devlink = devlink_get_from_info(info);
if (IS_ERR(devlink)) {
mutex_unlock(&devlink_mutex);
return PTR_ERR(devlink);
}
if (~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK)
mutex_lock(&devlink->lock);
if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_DEVLINK) {
info->user_ptr[0] = devlink;
} else if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_PORT) {
struct devlink_port *devlink_port;
devlink_port = devlink_port_get_from_info(devlink, info);
if (IS_ERR(devlink_port)) {
err = PTR_ERR(devlink_port);
goto unlock;
}
info->user_ptr[0] = devlink_port;
}
if (ops->internal_flags & DEVLINK_NL_FLAG_NEED_SB) {
struct devlink_sb *devlink_sb;
devlink_sb = devlink_sb_get_from_info(devlink, info);
if (IS_ERR(devlink_sb)) {
err = PTR_ERR(devlink_sb);
goto unlock;
}
info->user_ptr[1] = devlink_sb;
}
return 0;
unlock:
if (~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK)
mutex_unlock(&devlink->lock);
mutex_unlock(&devlink_mutex);
return err;
}
static void devlink_nl_post_doit(const struct genl_ops *ops,
struct sk_buff *skb, struct genl_info *info)
{
struct devlink *devlink;
devlink = devlink_get_from_info(info);
if (~ops->internal_flags & DEVLINK_NL_FLAG_NO_LOCK)
mutex_unlock(&devlink->lock);
mutex_unlock(&devlink_mutex);
}
static struct genl_family devlink_nl_family;
enum devlink_multicast_groups {
DEVLINK_MCGRP_CONFIG,
};
static const struct genl_multicast_group devlink_nl_mcgrps[] = {
[DEVLINK_MCGRP_CONFIG] = { .name = DEVLINK_GENL_MCGRP_CONFIG_NAME },
};
static int devlink_nl_put_handle(struct sk_buff *msg, struct devlink *devlink)
{
if (nla_put_string(msg, DEVLINK_ATTR_BUS_NAME, devlink->dev->bus->name))
return -EMSGSIZE;
if (nla_put_string(msg, DEVLINK_ATTR_DEV_NAME, dev_name(devlink->dev)))
return -EMSGSIZE;
return 0;
}
static int devlink_nl_fill(struct sk_buff *msg, struct devlink *devlink,
enum devlink_command cmd, u32 portid,
u32 seq, int flags)
{
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;
genlmsg_end(msg, hdr);
return 0;
nla_put_failure:
genlmsg_cancel(msg, hdr);
return -EMSGSIZE;
}
static 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);
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);
}
static int devlink_nl_port_attrs_put(struct sk_buff *msg,
struct devlink_port *devlink_port)
{
struct devlink_port_attrs *attrs = &devlink_port->attrs;
if (!attrs->set)
return 0;
if (nla_put_u16(msg, DEVLINK_ATTR_PORT_FLAVOUR, attrs->flavour))
return -EMSGSIZE;
if (nla_put_u32(msg, DEVLINK_ATTR_PORT_NUMBER, attrs->port_number))
return -EMSGSIZE;
if (!attrs->split)
return 0;
if (nla_put_u32(msg, DEVLINK_ATTR_PORT_SPLIT_GROUP, attrs->port_number))
return -EMSGSIZE;
if (nla_put_u32(msg, DEVLINK_ATTR_PORT_SPLIT_SUBPORT_NUMBER,
attrs->split_subport_number))
return -EMSGSIZE;
return 0;
}
static int devlink_nl_port_fill(struct sk_buff *msg, struct devlink *devlink,
struct devlink_port *devlink_port,
enum devlink_command cmd, u32 portid,
u32 seq, int flags)
{
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_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
goto nla_put_failure;
if (nla_put_u16(msg, DEVLINK_ATTR_PORT_TYPE, devlink_port->type))
goto nla_put_failure;
if (devlink_port->desired_type != DEVLINK_PORT_TYPE_NOTSET &&
nla_put_u16(msg, DEVLINK_ATTR_PORT_DESIRED_TYPE,
devlink_port->desired_type))
goto nla_put_failure;
if (devlink_port->type == DEVLINK_PORT_TYPE_ETH) {
struct net_device *netdev = devlink_port->type_dev;
if (netdev &&
(nla_put_u32(msg, DEVLINK_ATTR_PORT_NETDEV_IFINDEX,
netdev->ifindex) ||
nla_put_string(msg, DEVLINK_ATTR_PORT_NETDEV_NAME,
netdev->name)))
goto nla_put_failure;
}
if (devlink_port->type == DEVLINK_PORT_TYPE_IB) {
struct ib_device *ibdev = devlink_port->type_dev;
if (ibdev &&
nla_put_string(msg, DEVLINK_ATTR_PORT_IBDEV_NAME,
ibdev->name))
goto nla_put_failure;
}
if (devlink_nl_port_attrs_put(msg, devlink_port))
goto nla_put_failure;
genlmsg_end(msg, hdr);
return 0;
nla_put_failure:
genlmsg_cancel(msg, hdr);
return -EMSGSIZE;
}
static void devlink_port_notify(struct devlink_port *devlink_port,
enum devlink_command cmd)
{
struct devlink *devlink = devlink_port->devlink;
struct sk_buff *msg;
int err;
if (!devlink_port->registered)
return;
WARN_ON(cmd != DEVLINK_CMD_PORT_NEW && cmd != DEVLINK_CMD_PORT_DEL);
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
return;
err = devlink_nl_port_fill(msg, devlink, devlink_port, 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);
}
static 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_dumpit(struct sk_buff *msg,
struct netlink_callback *cb)
{
struct devlink *devlink;
int start = cb->args[0];
int idx = 0;
int err;
mutex_lock(&devlink_mutex);
list_for_each_entry(devlink, &devlink_list, list) {
if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
continue;
if (idx < start) {
idx++;
continue;
}
err = devlink_nl_fill(msg, devlink, DEVLINK_CMD_NEW,
NETLINK_CB(cb->skb).portid,
cb->nlh->nlmsg_seq, NLM_F_MULTI);
if (err)
goto out;
idx++;
}
out:
mutex_unlock(&devlink_mutex);
cb->args[0] = idx;
return msg->len;
}
static int devlink_nl_cmd_port_get_doit(struct sk_buff *skb,
struct genl_info *info)
{
struct devlink_port *devlink_port = info->user_ptr[0];
struct devlink *devlink = devlink_port->devlink;
struct sk_buff *msg;
int err;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
return -ENOMEM;
err = devlink_nl_port_fill(msg, devlink, devlink_port,
DEVLINK_CMD_PORT_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_port_get_dumpit(struct sk_buff *msg,
struct netlink_callback *cb)
{
struct devlink *devlink;
struct devlink_port *devlink_port;
int start = cb->args[0];
int idx = 0;
int err;
mutex_lock(&devlink_mutex);
list_for_each_entry(devlink, &devlink_list, list) {
if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
continue;
mutex_lock(&devlink->lock);
list_for_each_entry(devlink_port, &devlink->port_list, list) {
if (idx < start) {
idx++;
continue;
}
err = devlink_nl_port_fill(msg, devlink, devlink_port,
DEVLINK_CMD_NEW,
NETLINK_CB(cb->skb).portid,
cb->nlh->nlmsg_seq,
NLM_F_MULTI);
if (err) {
mutex_unlock(&devlink->lock);
goto out;
}
idx++;
}
mutex_unlock(&devlink->lock);
}
out:
mutex_unlock(&devlink_mutex);
cb->args[0] = idx;
return msg->len;
}
static int devlink_port_type_set(struct devlink *devlink,
struct devlink_port *devlink_port,
enum devlink_port_type port_type)
{
int err;
if (devlink->ops && devlink->ops->port_type_set) {
if (port_type == DEVLINK_PORT_TYPE_NOTSET)
return -EINVAL;
if (port_type == devlink_port->type)
return 0;
err = devlink->ops->port_type_set(devlink_port, port_type);
if (err)
return err;
devlink_port->desired_type = port_type;
devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
return 0;
}
return -EOPNOTSUPP;
}
static int devlink_nl_cmd_port_set_doit(struct sk_buff *skb,
struct genl_info *info)
{
struct devlink_port *devlink_port = info->user_ptr[0];
struct devlink *devlink = devlink_port->devlink;
int err;
if (info->attrs[DEVLINK_ATTR_PORT_TYPE]) {
enum devlink_port_type port_type;
port_type = nla_get_u16(info->attrs[DEVLINK_ATTR_PORT_TYPE]);
err = devlink_port_type_set(devlink, devlink_port, port_type);
if (err)
return err;
}
return 0;
}
static int devlink_port_split(struct devlink *devlink, u32 port_index,
u32 count, struct netlink_ext_ack *extack)
{
if (devlink->ops && devlink->ops->port_split)
return devlink->ops->port_split(devlink, port_index, count,
extack);
return -EOPNOTSUPP;
}
static int devlink_nl_cmd_port_split_doit(struct sk_buff *skb,
struct genl_info *info)
{
struct devlink *devlink = info->user_ptr[0];
u32 port_index;
u32 count;
if (!info->attrs[DEVLINK_ATTR_PORT_INDEX] ||
!info->attrs[DEVLINK_ATTR_PORT_SPLIT_COUNT])
return -EINVAL;
port_index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
count = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_SPLIT_COUNT]);
return devlink_port_split(devlink, port_index, count, info->extack);
}
static int devlink_port_unsplit(struct devlink *devlink, u32 port_index,
struct netlink_ext_ack *extack)
{
if (devlink->ops && devlink->ops->port_unsplit)
return devlink->ops->port_unsplit(devlink, port_index, extack);
return -EOPNOTSUPP;
}
static int devlink_nl_cmd_port_unsplit_doit(struct sk_buff *skb,
struct genl_info *info)
{
struct devlink *devlink = info->user_ptr[0];
u32 port_index;
if (!info->attrs[DEVLINK_ATTR_PORT_INDEX])
return -EINVAL;
port_index = nla_get_u32(info->attrs[DEVLINK_ATTR_PORT_INDEX]);
return devlink_port_unsplit(devlink, port_index, info->extack);
}
static int devlink_nl_sb_fill(struct sk_buff *msg, struct devlink *devlink,
struct devlink_sb *devlink_sb,
enum devlink_command cmd, u32 portid,
u32 seq, int flags)
{
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_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
goto nla_put_failure;
if (nla_put_u32(msg, DEVLINK_ATTR_SB_SIZE, devlink_sb->size))
goto nla_put_failure;
if (nla_put_u16(msg, DEVLINK_ATTR_SB_INGRESS_POOL_COUNT,
devlink_sb->ingress_pools_count))
goto nla_put_failure;
if (nla_put_u16(msg, DEVLINK_ATTR_SB_EGRESS_POOL_COUNT,
devlink_sb->egress_pools_count))
goto nla_put_failure;
if (nla_put_u16(msg, DEVLINK_ATTR_SB_INGRESS_TC_COUNT,
devlink_sb->ingress_tc_count))
goto nla_put_failure;
if (nla_put_u16(msg, DEVLINK_ATTR_SB_EGRESS_TC_COUNT,
devlink_sb->egress_tc_count))
goto nla_put_failure;
genlmsg_end(msg, hdr);
return 0;
nla_put_failure:
genlmsg_cancel(msg, hdr);
return -EMSGSIZE;
}
static int devlink_nl_cmd_sb_get_doit(struct sk_buff *skb,
struct genl_info *info)
{
struct devlink *devlink = info->user_ptr[0];
struct devlink_sb *devlink_sb = info->user_ptr[1];
struct sk_buff *msg;
int err;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
return -ENOMEM;
err = devlink_nl_sb_fill(msg, devlink, devlink_sb,
DEVLINK_CMD_SB_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_sb_get_dumpit(struct sk_buff *msg,
struct netlink_callback *cb)
{
struct devlink *devlink;
struct devlink_sb *devlink_sb;
int start = cb->args[0];
int idx = 0;
int err;
mutex_lock(&devlink_mutex);
list_for_each_entry(devlink, &devlink_list, list) {
if (!net_eq(devlink_net(devlink), sock_net(msg->sk)))
continue;
mutex_lock(&devlink->lock);
list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
if (idx < start) {
idx++;
continue;
}
err = devlink_nl_sb_fill(msg, devlink, devlink_sb,
DEVLINK_CMD_SB_NEW,
NETLINK_CB(cb->skb).portid,
cb->nlh->nlmsg_seq,
NLM_F_MULTI);
if (err) {
mutex_unlock(&devlink->lock);
goto out;
}
idx++;
}
mutex_unlock(&devlink->lock);
}
out:
mutex_unlock(&devlink_mutex);
cb->args[0] = idx;
return msg->len;
}
static int devlink_nl_sb_pool_fill(struct sk_buff *msg, struct devlink *devlink,
struct devlink_sb *devlink_sb,
u16 pool_index, enum devlink_command cmd,
u32 portid, u32 seq, int flags)
{
struct devlink_sb_pool_info pool_info;
void *hdr;
int err;
err = devlink->ops->sb_pool_get(devlink, devlink_sb->index,
pool_index, &pool_info);
if (err)
return err;
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_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
goto nla_put_failure;
if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index))
goto nla_put_failure;
if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_TYPE, pool_info.pool_type))
goto nla_put_failure;
if (nla_put_u32(msg, DEVLINK_ATTR_SB_POOL_SIZE, pool_info.size))
goto nla_put_failure;
if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE,
pool_info.threshold_type))
goto nla_put_failure;
genlmsg_end(msg, hdr);
return 0;
nla_put_failure:
genlmsg_cancel(msg, hdr);
return -EMSGSIZE;
}
static int devlink_nl_cmd_sb_pool_get_doit(struct sk_buff *skb,
struct genl_info *info)
{
struct devlink *devlink = info->user_ptr[0];
struct devlink_sb *devlink_sb = info->user_ptr[1];
struct sk_buff *msg;
u16 pool_index;
int err;
err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
&pool_index);
if (err)
return err;
if (!devlink->ops || !devlink->ops->sb_pool_get)
return -EOPNOTSUPP;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
return -ENOMEM;
err = devlink_nl_sb_pool_fill(msg, devlink, devlink_sb, pool_index,
DEVLINK_CMD_SB_POOL_NEW,
info->snd_portid, info->snd_seq, 0);
if (err) {
nlmsg_free(msg);
return err;
}
return genlmsg_reply(msg, info);
}
static int __sb_pool_get_dumpit(struct sk_buff *msg, int start, int *p_idx,
struct devlink *devlink,
struct devlink_sb *devlink_sb,
u32 portid, u32 seq)
{
u16 pool_count = devlink_sb_pool_count(devlink_sb);
u16 pool_index;
int err;
for (pool_index = 0; pool_index < pool_count; pool_index++) {
if (*p_idx < start) {
(*p_idx)++;
continue;
}
err = devlink_nl_sb_pool_fill(msg, devlink,
devlink_sb,
pool_index,
DEVLINK_CMD_SB_POOL_NEW,
portid, seq, NLM_F_MULTI);
if (err)
return err;
(*p_idx)++;
}
return 0;
}
static int devlink_nl_cmd_sb_pool_get_dumpit(struct sk_buff *msg,
struct netlink_callback *cb)
{
struct devlink *devlink;
struct devlink_sb *devlink_sb;
int start = cb->args[0];
int idx = 0;
int err;
mutex_lock(&devlink_mutex);
list_for_each_entry(devlink, &devlink_list, list) {
if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) ||
!devlink->ops || !devlink->ops->sb_pool_get)
continue;
mutex_lock(&devlink->lock);
list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
err = __sb_pool_get_dumpit(msg, start, &idx, devlink,
devlink_sb,
NETLINK_CB(cb->skb).portid,
cb->nlh->nlmsg_seq);
if (err && err != -EOPNOTSUPP) {
mutex_unlock(&devlink->lock);
goto out;
}
}
mutex_unlock(&devlink->lock);
}
out:
mutex_unlock(&devlink_mutex);
cb->args[0] = idx;
return msg->len;
}
static int devlink_sb_pool_set(struct devlink *devlink, unsigned int sb_index,
u16 pool_index, u32 size,
enum devlink_sb_threshold_type threshold_type)
{
const struct devlink_ops *ops = devlink->ops;
if (ops && ops->sb_pool_set)
return ops->sb_pool_set(devlink, sb_index, pool_index,
size, threshold_type);
return -EOPNOTSUPP;
}
static int devlink_nl_cmd_sb_pool_set_doit(struct sk_buff *skb,
struct genl_info *info)
{
struct devlink *devlink = info->user_ptr[0];
struct devlink_sb *devlink_sb = info->user_ptr[1];
enum devlink_sb_threshold_type threshold_type;
u16 pool_index;
u32 size;
int err;
err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
&pool_index);
if (err)
return err;
err = devlink_sb_th_type_get_from_info(info, &threshold_type);
if (err)
return err;
if (!info->attrs[DEVLINK_ATTR_SB_POOL_SIZE])
return -EINVAL;
size = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_POOL_SIZE]);
return devlink_sb_pool_set(devlink, devlink_sb->index,
pool_index, size, threshold_type);
}
static int devlink_nl_sb_port_pool_fill(struct sk_buff *msg,
struct devlink *devlink,
struct devlink_port *devlink_port,
struct devlink_sb *devlink_sb,
u16 pool_index,
enum devlink_command cmd,
u32 portid, u32 seq, int flags)
{
const struct devlink_ops *ops = devlink->ops;
u32 threshold;
void *hdr;
int err;
err = ops->sb_port_pool_get(devlink_port, devlink_sb->index,
pool_index, &threshold);
if (err)
return err;
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_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
goto nla_put_failure;
if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
goto nla_put_failure;
if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index))
goto nla_put_failure;
if (nla_put_u32(msg, DEVLINK_ATTR_SB_THRESHOLD, threshold))
goto nla_put_failure;
if (ops->sb_occ_port_pool_get) {
u32 cur;
u32 max;
err = ops->sb_occ_port_pool_get(devlink_port, devlink_sb->index,
pool_index, &cur, &max);
if (err && err != -EOPNOTSUPP)
return err;
if (!err) {
if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_CUR, cur))
goto nla_put_failure;
if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_MAX, max))
goto nla_put_failure;
}
}
genlmsg_end(msg, hdr);
return 0;
nla_put_failure:
genlmsg_cancel(msg, hdr);
return -EMSGSIZE;
}
static int devlink_nl_cmd_sb_port_pool_get_doit(struct sk_buff *skb,
struct genl_info *info)
{
struct devlink_port *devlink_port = info->user_ptr[0];
struct devlink *devlink = devlink_port->devlink;
struct devlink_sb *devlink_sb = info->user_ptr[1];
struct sk_buff *msg;
u16 pool_index;
int err;
err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
&pool_index);
if (err)
return err;
if (!devlink->ops || !devlink->ops->sb_port_pool_get)
return -EOPNOTSUPP;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
return -ENOMEM;
err = devlink_nl_sb_port_pool_fill(msg, devlink, devlink_port,
devlink_sb, pool_index,
DEVLINK_CMD_SB_PORT_POOL_NEW,
info->snd_portid, info->snd_seq, 0);
if (err) {
nlmsg_free(msg);
return err;
}
return genlmsg_reply(msg, info);
}
static int __sb_port_pool_get_dumpit(struct sk_buff *msg, int start, int *p_idx,
struct devlink *devlink,
struct devlink_sb *devlink_sb,
u32 portid, u32 seq)
{
struct devlink_port *devlink_port;
u16 pool_count = devlink_sb_pool_count(devlink_sb);
u16 pool_index;
int err;
list_for_each_entry(devlink_port, &devlink->port_list, list) {
for (pool_index = 0; pool_index < pool_count; pool_index++) {
if (*p_idx < start) {
(*p_idx)++;
continue;
}
err = devlink_nl_sb_port_pool_fill(msg, devlink,
devlink_port,
devlink_sb,
pool_index,
DEVLINK_CMD_SB_PORT_POOL_NEW,
portid, seq,
NLM_F_MULTI);
if (err)
return err;
(*p_idx)++;
}
}
return 0;
}
static int devlink_nl_cmd_sb_port_pool_get_dumpit(struct sk_buff *msg,
struct netlink_callback *cb)
{
struct devlink *devlink;
struct devlink_sb *devlink_sb;
int start = cb->args[0];
int idx = 0;
int err;
mutex_lock(&devlink_mutex);
list_for_each_entry(devlink, &devlink_list, list) {
if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) ||
!devlink->ops || !devlink->ops->sb_port_pool_get)
continue;
mutex_lock(&devlink->lock);
list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
err = __sb_port_pool_get_dumpit(msg, start, &idx,
devlink, devlink_sb,
NETLINK_CB(cb->skb).portid,
cb->nlh->nlmsg_seq);
if (err && err != -EOPNOTSUPP) {
mutex_unlock(&devlink->lock);
goto out;
}
}
mutex_unlock(&devlink->lock);
}
out:
mutex_unlock(&devlink_mutex);
cb->args[0] = idx;
return msg->len;
}
static int devlink_sb_port_pool_set(struct devlink_port *devlink_port,
unsigned int sb_index, u16 pool_index,
u32 threshold)
{
const struct devlink_ops *ops = devlink_port->devlink->ops;
if (ops && ops->sb_port_pool_set)
return ops->sb_port_pool_set(devlink_port, sb_index,
pool_index, threshold);
return -EOPNOTSUPP;
}
static int devlink_nl_cmd_sb_port_pool_set_doit(struct sk_buff *skb,
struct genl_info *info)
{
struct devlink_port *devlink_port = info->user_ptr[0];
struct devlink_sb *devlink_sb = info->user_ptr[1];
u16 pool_index;
u32 threshold;
int err;
err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
&pool_index);
if (err)
return err;
if (!info->attrs[DEVLINK_ATTR_SB_THRESHOLD])
return -EINVAL;
threshold = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_THRESHOLD]);
return devlink_sb_port_pool_set(devlink_port, devlink_sb->index,
pool_index, threshold);
}
static int
devlink_nl_sb_tc_pool_bind_fill(struct sk_buff *msg, struct devlink *devlink,
struct devlink_port *devlink_port,
struct devlink_sb *devlink_sb, u16 tc_index,
enum devlink_sb_pool_type pool_type,
enum devlink_command cmd,
u32 portid, u32 seq, int flags)
{
const struct devlink_ops *ops = devlink->ops;
u16 pool_index;
u32 threshold;
void *hdr;
int err;
err = ops->sb_tc_pool_bind_get(devlink_port, devlink_sb->index,
tc_index, pool_type,
&pool_index, &threshold);
if (err)
return err;
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_u32(msg, DEVLINK_ATTR_PORT_INDEX, devlink_port->index))
goto nla_put_failure;
if (nla_put_u32(msg, DEVLINK_ATTR_SB_INDEX, devlink_sb->index))
goto nla_put_failure;
if (nla_put_u16(msg, DEVLINK_ATTR_SB_TC_INDEX, tc_index))
goto nla_put_failure;
if (nla_put_u8(msg, DEVLINK_ATTR_SB_POOL_TYPE, pool_type))
goto nla_put_failure;
if (nla_put_u16(msg, DEVLINK_ATTR_SB_POOL_INDEX, pool_index))
goto nla_put_failure;
if (nla_put_u32(msg, DEVLINK_ATTR_SB_THRESHOLD, threshold))
goto nla_put_failure;
if (ops->sb_occ_tc_port_bind_get) {
u32 cur;
u32 max;
err = ops->sb_occ_tc_port_bind_get(devlink_port,
devlink_sb->index,
tc_index, pool_type,
&cur, &max);
if (err && err != -EOPNOTSUPP)
return err;
if (!err) {
if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_CUR, cur))
goto nla_put_failure;
if (nla_put_u32(msg, DEVLINK_ATTR_SB_OCC_MAX, max))
goto nla_put_failure;
}
}
genlmsg_end(msg, hdr);
return 0;
nla_put_failure:
genlmsg_cancel(msg, hdr);
return -EMSGSIZE;
}
static int devlink_nl_cmd_sb_tc_pool_bind_get_doit(struct sk_buff *skb,
struct genl_info *info)
{
struct devlink_port *devlink_port = info->user_ptr[0];
struct devlink *devlink = devlink_port->devlink;
struct devlink_sb *devlink_sb = info->user_ptr[1];
struct sk_buff *msg;
enum devlink_sb_pool_type pool_type;
u16 tc_index;
int err;
err = devlink_sb_pool_type_get_from_info(info, &pool_type);
if (err)
return err;
err = devlink_sb_tc_index_get_from_info(devlink_sb, info,
pool_type, &tc_index);
if (err)
return err;
if (!devlink->ops || !devlink->ops->sb_tc_pool_bind_get)
return -EOPNOTSUPP;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
return -ENOMEM;
err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink, devlink_port,
devlink_sb, tc_index, pool_type,
DEVLINK_CMD_SB_TC_POOL_BIND_NEW,
info->snd_portid,
info->snd_seq, 0);
if (err) {
nlmsg_free(msg);
return err;
}
return genlmsg_reply(msg, info);
}
static int __sb_tc_pool_bind_get_dumpit(struct sk_buff *msg,
int start, int *p_idx,
struct devlink *devlink,
struct devlink_sb *devlink_sb,
u32 portid, u32 seq)
{
struct devlink_port *devlink_port;
u16 tc_index;
int err;
list_for_each_entry(devlink_port, &devlink->port_list, list) {
for (tc_index = 0;
tc_index < devlink_sb->ingress_tc_count; tc_index++) {
if (*p_idx < start) {
(*p_idx)++;
continue;
}
err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink,
devlink_port,
devlink_sb,
tc_index,
DEVLINK_SB_POOL_TYPE_INGRESS,
DEVLINK_CMD_SB_TC_POOL_BIND_NEW,
portid, seq,
NLM_F_MULTI);
if (err)
return err;
(*p_idx)++;
}
for (tc_index = 0;
tc_index < devlink_sb->egress_tc_count; tc_index++) {
if (*p_idx < start) {
(*p_idx)++;
continue;
}
err = devlink_nl_sb_tc_pool_bind_fill(msg, devlink,
devlink_port,
devlink_sb,
tc_index,
DEVLINK_SB_POOL_TYPE_EGRESS,
DEVLINK_CMD_SB_TC_POOL_BIND_NEW,
portid, seq,
NLM_F_MULTI);
if (err)
return err;
(*p_idx)++;
}
}
return 0;
}
static int
devlink_nl_cmd_sb_tc_pool_bind_get_dumpit(struct sk_buff *msg,
struct netlink_callback *cb)
{
struct devlink *devlink;
struct devlink_sb *devlink_sb;
int start = cb->args[0];
int idx = 0;
int err;
mutex_lock(&devlink_mutex);
list_for_each_entry(devlink, &devlink_list, list) {
if (!net_eq(devlink_net(devlink), sock_net(msg->sk)) ||
!devlink->ops || !devlink->ops->sb_tc_pool_bind_get)
continue;
mutex_lock(&devlink->lock);
list_for_each_entry(devlink_sb, &devlink->sb_list, list) {
err = __sb_tc_pool_bind_get_dumpit(msg, start, &idx,
devlink,
devlink_sb,
NETLINK_CB(cb->skb).portid,
cb->nlh->nlmsg_seq);
if (err && err != -EOPNOTSUPP) {
mutex_unlock(&devlink->lock);
goto out;
}
}
mutex_unlock(&devlink->lock);
}
out:
mutex_unlock(&devlink_mutex);
cb->args[0] = idx;
return msg->len;
}
static int devlink_sb_tc_pool_bind_set(struct devlink_port *devlink_port,
unsigned int sb_index, u16 tc_index,
enum devlink_sb_pool_type pool_type,
u16 pool_index, u32 threshold)
{
const struct devlink_ops *ops = devlink_port->devlink->ops;
if (ops && ops->sb_tc_pool_bind_set)
return ops->sb_tc_pool_bind_set(devlink_port, sb_index,
tc_index, pool_type,
pool_index, threshold);
return -EOPNOTSUPP;
}
static int devlink_nl_cmd_sb_tc_pool_bind_set_doit(struct sk_buff *skb,
struct genl_info *info)
{
struct devlink_port *devlink_port = info->user_ptr[0];
struct devlink_sb *devlink_sb = info->user_ptr[1];
enum devlink_sb_pool_type pool_type;
u16 tc_index;
u16 pool_index;
u32 threshold;
int err;
err = devlink_sb_pool_type_get_from_info(info, &pool_type);
if (err)
return err;
err = devlink_sb_tc_index_get_from_info(devlink_sb, info,
pool_type, &tc_index);
if (err)
return err;
err = devlink_sb_pool_index_get_from_info(devlink_sb, info,
&pool_index);
if (err)
return err;
if (!info->attrs[DEVLINK_ATTR_SB_THRESHOLD])
return -EINVAL;
threshold = nla_get_u32(info->attrs[DEVLINK_ATTR_SB_THRESHOLD]);
return devlink_sb_tc_pool_bind_set(devlink_port, devlink_sb->index,
tc_index, pool_type,
pool_index, threshold);
}
static int devlink_nl_cmd_sb_occ_snapshot_doit(struct sk_buff *skb,
struct genl_info *info)
{
struct devlink *devlink = info->user_ptr[0];
struct devlink_sb *devlink_sb = info->user_ptr[1];
const struct devlink_ops *ops = devlink->ops;
if (ops && ops->sb_occ_snapshot)
return ops->sb_occ_snapshot(devlink, devlink_sb->index);
return -EOPNOTSUPP;
}
static int devlink_nl_cmd_sb_occ_max_clear_doit(struct sk_buff *skb,
struct genl_info *info)
{
struct devlink *devlink = info->user_ptr[0];
struct devlink_sb *devlink_sb = info->user_ptr[1];
const struct devlink_ops *ops = devlink->ops;
if (ops && ops->sb_occ_max_clear)
return ops->sb_occ_max_clear(devlink, devlink_sb->index);
return -EOPNOTSUPP;
}
static int devlink_nl_eswitch_fill(struct sk_buff *msg, struct devlink *devlink,
enum devlink_command cmd, u32 portid,
u32 seq, int flags)
{
const struct devlink_ops *ops = devlink->ops;
u8 inline_mode, encap_mode;
void *hdr;
int err = 0;
u16 mode;
hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd);
if (!hdr)
return -EMSGSIZE;
err = devlink_nl_put_handle(msg, devlink);
if (err)
goto nla_put_failure;
if (ops->eswitch_mode_get) {
err = ops->eswitch_mode_get(devlink, &mode);
if (err)
goto nla_put_failure;
err = nla_put_u16(msg, DEVLINK_ATTR_ESWITCH_MODE, mode);
if (err)
goto nla_put_failure;
}
if (ops->eswitch_inline_mode_get) {
err = ops->eswitch_inline_mode_get(devlink, &inline_mode);
if (err)
goto nla_put_failure;
err = nla_put_u8(msg, DEVLINK_ATTR_ESWITCH_INLINE_MODE,
inline_mode);
if (err)
goto nla_put_failure;
}
if (ops->eswitch_encap_mode_get) {
err = ops->eswitch_encap_mode_get(devlink, &encap_mode);
if (err)
goto nla_put_failure;
err = nla_put_u8(msg, DEVLINK_ATTR_ESWITCH_ENCAP_MODE, encap_mode);
if (err)
goto nla_put_failure;
}
genlmsg_end(msg, hdr);
return 0;
nla_put_failure:
genlmsg_cancel(msg, hdr);
return err;
}
static int devlink_nl_cmd_eswitch_get_doit(struct sk_buff *skb,
struct genl_info *info)
{
struct devlink *devlink = info->user_ptr[0];
const struct devlink_ops *ops = devlink->ops;
struct sk_buff *msg;
int err;
if (!ops)
return -EOPNOTSUPP;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
return -ENOMEM;
err = devlink_nl_eswitch_fill(msg, devlink, DEVLINK_CMD_ESWITCH_GET,
info->snd_portid, info->snd_seq, 0);
if (err) {
nlmsg_free(msg);
return err;
}
return genlmsg_reply(msg, info);
}
static int devlink_nl_cmd_eswitch_set_doit(struct sk_buff *skb,
struct genl_info *info)
{
struct devlink *devlink = info->user_ptr[0];
const struct devlink_ops *ops = devlink->ops;
u8 inline_mode, encap_mode;
int err = 0;
u16 mode;
if (!ops)
return -EOPNOTSUPP;
if (info->attrs[DEVLINK_ATTR_ESWITCH_MODE]) {
if (!ops->eswitch_mode_set)
return -EOPNOTSUPP;
mode = nla_get_u16(info->attrs[DEVLINK_ATTR_ESWITCH_MODE]);
err = ops->eswitch_mode_set(devlink, mode, info->extack);
if (err)
return err;
}
if (info->attrs[DEVLINK_ATTR_ESWITCH_INLINE_MODE]) {
if (!ops->eswitch_inline_mode_set)
return -EOPNOTSUPP;
inline_mode = nla_get_u8(
info->attrs[DEVLINK_ATTR_ESWITCH_INLINE_MODE]);
err = ops->eswitch_inline_mode_set(devlink, inline_mode,
info->extack);
if (err)
return err;
}
if (info->attrs[DEVLINK_ATTR_ESWITCH_ENCAP_MODE]) {
if (!ops->eswitch_encap_mode_set)
return -EOPNOTSUPP;
encap_mode = nla_get_u8(info->attrs[DEVLINK_ATTR_ESWITCH_ENCAP_MODE]);
err = ops->eswitch_encap_mode_set(devlink, encap_mode,
info->extack);
if (err)
return err;
}
return 0;
}
int devlink_dpipe_match_put(struct sk_buff *skb,
struct devlink_dpipe_match *match)
{
struct devlink_dpipe_header *header = match->header;
struct devlink_dpipe_field *field = &header->fields[match->field_id];
struct nlattr *match_attr;
match_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_MATCH);
if (!match_attr)
return -EMSGSIZE;
if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_MATCH_TYPE, match->type) ||
nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_INDEX, match->header_index) ||
nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) ||
nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) ||
nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global))
goto nla_put_failure;
nla_nest_end(skb, match_attr);
return 0;
nla_put_failure:
nla_nest_cancel(skb, match_attr);
return -EMSGSIZE;
}
EXPORT_SYMBOL_GPL(devlink_dpipe_match_put);
static int devlink_dpipe_matches_put(struct devlink_dpipe_table *table,
struct sk_buff *skb)
{
struct nlattr *matches_attr;
matches_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_TABLE_MATCHES);
if (!matches_attr)
return -EMSGSIZE;
if (table->table_ops->matches_dump(table->priv, skb))
goto nla_put_failure;
nla_nest_end(skb, matches_attr);
return 0;
nla_put_failure:
nla_nest_cancel(skb, matches_attr);
return -EMSGSIZE;
}
int devlink_dpipe_action_put(struct sk_buff *skb,
struct devlink_dpipe_action *action)
{
struct devlink_dpipe_header *header = action->header;
struct devlink_dpipe_field *field = &header->fields[action->field_id];
struct nlattr *action_attr;
action_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_ACTION);
if (!action_attr)
return -EMSGSIZE;
if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_ACTION_TYPE, action->type) ||
nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_INDEX, action->header_index) ||
nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) ||
nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) ||
nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global))
goto nla_put_failure;
nla_nest_end(skb, action_attr);
return 0;
nla_put_failure:
nla_nest_cancel(skb, action_attr);
return -EMSGSIZE;
}
EXPORT_SYMBOL_GPL(devlink_dpipe_action_put);
static int devlink_dpipe_actions_put(struct devlink_dpipe_table *table,
struct sk_buff *skb)
{
struct nlattr *actions_attr;
actions_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_TABLE_ACTIONS);
if (!actions_attr)
return -EMSGSIZE;
if (table->table_ops->actions_dump(table->priv, skb))
goto nla_put_failure;
nla_nest_end(skb, actions_attr);
return 0;
nla_put_failure:
nla_nest_cancel(skb, actions_attr);
return -EMSGSIZE;
}
static int devlink_dpipe_table_put(struct sk_buff *skb,
struct devlink_dpipe_table *table)
{
struct nlattr *table_attr;
u64 table_size;
table_size = table->table_ops->size_get(table->priv);
table_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_TABLE);
if (!table_attr)
return -EMSGSIZE;
if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_TABLE_NAME, table->name) ||
nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_SIZE, table_size,
DEVLINK_ATTR_PAD))
goto nla_put_failure;
if (nla_put_u8(skb, DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED,
table->counters_enabled))
goto nla_put_failure;
if (table->resource_valid) {
if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_RESOURCE_ID,
table->resource_id, DEVLINK_ATTR_PAD) ||
nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_TABLE_RESOURCE_UNITS,
table->resource_units, DEVLINK_ATTR_PAD))
goto nla_put_failure;
}
if (devlink_dpipe_matches_put(table, skb))
goto nla_put_failure;
if (devlink_dpipe_actions_put(table, skb))
goto nla_put_failure;
nla_nest_end(skb, table_attr);
return 0;
nla_put_failure:
nla_nest_cancel(skb, table_attr);
return -EMSGSIZE;
}
static int devlink_dpipe_send_and_alloc_skb(struct sk_buff **pskb,
struct genl_info *info)
{
int err;
if (*pskb) {
err = genlmsg_reply(*pskb, info);
if (err)
return err;
}
*pskb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!*pskb)
return -ENOMEM;
return 0;
}
static int devlink_dpipe_tables_fill(struct genl_info *info,
enum devlink_command cmd, int flags,
struct list_head *dpipe_tables,
const char *table_name)
{
struct devlink *devlink = info->user_ptr[0];
struct devlink_dpipe_table *table;
struct nlattr *tables_attr;
struct sk_buff *skb = NULL;
struct nlmsghdr *nlh;
bool incomplete;
void *hdr;
int i;
int err;
table = list_first_entry(dpipe_tables,
struct devlink_dpipe_table, list);
start_again:
err = devlink_dpipe_send_and_alloc_skb(&skb, info);
if (err)
return err;
hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
&devlink_nl_family, NLM_F_MULTI, cmd);
if (!hdr) {
nlmsg_free(skb);
return -EMSGSIZE;
}
if (devlink_nl_put_handle(skb, devlink))
goto nla_put_failure;
tables_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_TABLES);
if (!tables_attr)
goto nla_put_failure;
i = 0;
incomplete = false;
list_for_each_entry_from(table, dpipe_tables, list) {
if (!table_name) {
err = devlink_dpipe_table_put(skb, table);
if (err) {
if (!i)
goto err_table_put;
incomplete = true;
break;
}
} else {
if (!strcmp(table->name, table_name)) {
err = devlink_dpipe_table_put(skb, table);
if (err)
break;
}
}
i++;
}
nla_nest_end(skb, tables_attr);
genlmsg_end(skb, hdr);
if (incomplete)
goto start_again;
send_done:
nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
NLMSG_DONE, 0, flags | NLM_F_MULTI);
if (!nlh) {
err = devlink_dpipe_send_and_alloc_skb(&skb, info);
if (err)
return err;
goto send_done;
}
return genlmsg_reply(skb, info);
nla_put_failure:
err = -EMSGSIZE;
err_table_put:
nlmsg_free(skb);
return err;
}
static int devlink_nl_cmd_dpipe_table_get(struct sk_buff *skb,
struct genl_info *info)
{
struct devlink *devlink = info->user_ptr[0];
const char *table_name = NULL;
if (info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME])
table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]);
return devlink_dpipe_tables_fill(info, DEVLINK_CMD_DPIPE_TABLE_GET, 0,
&devlink->dpipe_table_list,
table_name);
}
static int devlink_dpipe_value_put(struct sk_buff *skb,
struct devlink_dpipe_value *value)
{
if (nla_put(skb, DEVLINK_ATTR_DPIPE_VALUE,
value->value_size, value->value))
return -EMSGSIZE;
if (value->mask)
if (nla_put(skb, DEVLINK_ATTR_DPIPE_VALUE_MASK,
value->value_size, value->mask))
return -EMSGSIZE;
if (value->mapping_valid)
if (nla_put_u32(skb, DEVLINK_ATTR_DPIPE_VALUE_MAPPING,
value->mapping_value))
return -EMSGSIZE;
return 0;
}
static int devlink_dpipe_action_value_put(struct sk_buff *skb,
struct devlink_dpipe_value *value)
{
if (!value->action)
return -EINVAL;
if (devlink_dpipe_action_put(skb, value->action))
return -EMSGSIZE;
if (devlink_dpipe_value_put(skb, value))
return -EMSGSIZE;
return 0;
}
static int devlink_dpipe_action_values_put(struct sk_buff *skb,
struct devlink_dpipe_value *values,
unsigned int values_count)
{
struct nlattr *action_attr;
int i;
int err;
for (i = 0; i < values_count; i++) {
action_attr = nla_nest_start(skb,
DEVLINK_ATTR_DPIPE_ACTION_VALUE);
if (!action_attr)
return -EMSGSIZE;
err = devlink_dpipe_action_value_put(skb, &values[i]);
if (err)
goto err_action_value_put;
nla_nest_end(skb, action_attr);
}
return 0;
err_action_value_put:
nla_nest_cancel(skb, action_attr);
return err;
}
static int devlink_dpipe_match_value_put(struct sk_buff *skb,
struct devlink_dpipe_value *value)
{
if (!value->match)
return -EINVAL;
if (devlink_dpipe_match_put(skb, value->match))
return -EMSGSIZE;
if (devlink_dpipe_value_put(skb, value))
return -EMSGSIZE;
return 0;
}
static int devlink_dpipe_match_values_put(struct sk_buff *skb,
struct devlink_dpipe_value *values,
unsigned int values_count)
{
struct nlattr *match_attr;
int i;
int err;
for (i = 0; i < values_count; i++) {
match_attr = nla_nest_start(skb,
DEVLINK_ATTR_DPIPE_MATCH_VALUE);
if (!match_attr)
return -EMSGSIZE;
err = devlink_dpipe_match_value_put(skb, &values[i]);
if (err)
goto err_match_value_put;
nla_nest_end(skb, match_attr);
}
return 0;
err_match_value_put:
nla_nest_cancel(skb, match_attr);
return err;
}
static int devlink_dpipe_entry_put(struct sk_buff *skb,
struct devlink_dpipe_entry *entry)
{
struct nlattr *entry_attr, *matches_attr, *actions_attr;
int err;
entry_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_ENTRY);
if (!entry_attr)
return -EMSGSIZE;
if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_ENTRY_INDEX, entry->index,
DEVLINK_ATTR_PAD))
goto nla_put_failure;
if (entry->counter_valid)
if (nla_put_u64_64bit(skb, DEVLINK_ATTR_DPIPE_ENTRY_COUNTER,
entry->counter, DEVLINK_ATTR_PAD))
goto nla_put_failure;
matches_attr = nla_nest_start(skb,
DEVLINK_ATTR_DPIPE_ENTRY_MATCH_VALUES);
if (!matches_attr)
goto nla_put_failure;
err = devlink_dpipe_match_values_put(skb, entry->match_values,
entry->match_values_count);
if (err) {
nla_nest_cancel(skb, matches_attr);
goto err_match_values_put;
}
nla_nest_end(skb, matches_attr);
actions_attr = nla_nest_start(skb,
DEVLINK_ATTR_DPIPE_ENTRY_ACTION_VALUES);
if (!actions_attr)
goto nla_put_failure;
err = devlink_dpipe_action_values_put(skb, entry->action_values,
entry->action_values_count);
if (err) {
nla_nest_cancel(skb, actions_attr);
goto err_action_values_put;
}
nla_nest_end(skb, actions_attr);
nla_nest_end(skb, entry_attr);
return 0;
nla_put_failure:
err = -EMSGSIZE;
err_match_values_put:
err_action_values_put:
nla_nest_cancel(skb, entry_attr);
return err;
}
static struct devlink_dpipe_table *
devlink_dpipe_table_find(struct list_head *dpipe_tables,
const char *table_name)
{
struct devlink_dpipe_table *table;
list_for_each_entry_rcu(table, dpipe_tables, list) {
if (!strcmp(table->name, table_name))
return table;
}
return NULL;
}
int devlink_dpipe_entry_ctx_prepare(struct devlink_dpipe_dump_ctx *dump_ctx)
{
struct devlink *devlink;
int err;
err = devlink_dpipe_send_and_alloc_skb(&dump_ctx->skb,
dump_ctx->info);
if (err)
return err;
dump_ctx->hdr = genlmsg_put(dump_ctx->skb,
dump_ctx->info->snd_portid,
dump_ctx->info->snd_seq,
&devlink_nl_family, NLM_F_MULTI,
dump_ctx->cmd);
if (!dump_ctx->hdr)
goto nla_put_failure;
devlink = dump_ctx->info->user_ptr[0];
if (devlink_nl_put_handle(dump_ctx->skb, devlink))
goto nla_put_failure;
dump_ctx->nest = nla_nest_start(dump_ctx->skb,
DEVLINK_ATTR_DPIPE_ENTRIES);
if (!dump_ctx->nest)
goto nla_put_failure;
return 0;
nla_put_failure:
nlmsg_free(dump_ctx->skb);
return -EMSGSIZE;
}
EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_prepare);
int devlink_dpipe_entry_ctx_append(struct devlink_dpipe_dump_ctx *dump_ctx,
struct devlink_dpipe_entry *entry)
{
return devlink_dpipe_entry_put(dump_ctx->skb, entry);
}
EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_append);
int devlink_dpipe_entry_ctx_close(struct devlink_dpipe_dump_ctx *dump_ctx)
{
nla_nest_end(dump_ctx->skb, dump_ctx->nest);
genlmsg_end(dump_ctx->skb, dump_ctx->hdr);
return 0;
}
EXPORT_SYMBOL_GPL(devlink_dpipe_entry_ctx_close);
void devlink_dpipe_entry_clear(struct devlink_dpipe_entry *entry)
{
unsigned int value_count, value_index;
struct devlink_dpipe_value *value;
value = entry->action_values;
value_count = entry->action_values_count;
for (value_index = 0; value_index < value_count; value_index++) {
kfree(value[value_index].value);
kfree(value[value_index].mask);
}
value = entry->match_values;
value_count = entry->match_values_count;
for (value_index = 0; value_index < value_count; value_index++) {
kfree(value[value_index].value);
kfree(value[value_index].mask);
}
}
EXPORT_SYMBOL(devlink_dpipe_entry_clear);
static int devlink_dpipe_entries_fill(struct genl_info *info,
enum devlink_command cmd, int flags,
struct devlink_dpipe_table *table)
{
struct devlink_dpipe_dump_ctx dump_ctx;
struct nlmsghdr *nlh;
int err;
dump_ctx.skb = NULL;
dump_ctx.cmd = cmd;
dump_ctx.info = info;
err = table->table_ops->entries_dump(table->priv,
table->counters_enabled,
&dump_ctx);
if (err)
return err;
send_done:
nlh = nlmsg_put(dump_ctx.skb, info->snd_portid, info->snd_seq,
NLMSG_DONE, 0, flags | NLM_F_MULTI);
if (!nlh) {
err = devlink_dpipe_send_and_alloc_skb(&dump_ctx.skb, info);
if (err)
return err;
goto send_done;
}
return genlmsg_reply(dump_ctx.skb, info);
}
static int devlink_nl_cmd_dpipe_entries_get(struct sk_buff *skb,
struct genl_info *info)
{
struct devlink *devlink = info->user_ptr[0];
struct devlink_dpipe_table *table;
const char *table_name;
if (!info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME])
return -EINVAL;
table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]);
table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
table_name);
if (!table)
return -EINVAL;
if (!table->table_ops->entries_dump)
return -EINVAL;
return devlink_dpipe_entries_fill(info, DEVLINK_CMD_DPIPE_ENTRIES_GET,
0, table);
}
static int devlink_dpipe_fields_put(struct sk_buff *skb,
const struct devlink_dpipe_header *header)
{
struct devlink_dpipe_field *field;
struct nlattr *field_attr;
int i;
for (i = 0; i < header->fields_count; i++) {
field = &header->fields[i];
field_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_FIELD);
if (!field_attr)
return -EMSGSIZE;
if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_FIELD_NAME, field->name) ||
nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_ID, field->id) ||
nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_BITWIDTH, field->bitwidth) ||
nla_put_u32(skb, DEVLINK_ATTR_DPIPE_FIELD_MAPPING_TYPE, field->mapping_type))
goto nla_put_failure;
nla_nest_end(skb, field_attr);
}
return 0;
nla_put_failure:
nla_nest_cancel(skb, field_attr);
return -EMSGSIZE;
}
static int devlink_dpipe_header_put(struct sk_buff *skb,
struct devlink_dpipe_header *header)
{
struct nlattr *fields_attr, *header_attr;
int err;
header_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_HEADER);
if (!header_attr)
return -EMSGSIZE;
if (nla_put_string(skb, DEVLINK_ATTR_DPIPE_HEADER_NAME, header->name) ||
nla_put_u32(skb, DEVLINK_ATTR_DPIPE_HEADER_ID, header->id) ||
nla_put_u8(skb, DEVLINK_ATTR_DPIPE_HEADER_GLOBAL, header->global))
goto nla_put_failure;
fields_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_HEADER_FIELDS);
if (!fields_attr)
goto nla_put_failure;
err = devlink_dpipe_fields_put(skb, header);
if (err) {
nla_nest_cancel(skb, fields_attr);
goto nla_put_failure;
}
nla_nest_end(skb, fields_attr);
nla_nest_end(skb, header_attr);
return 0;
nla_put_failure:
err = -EMSGSIZE;
nla_nest_cancel(skb, header_attr);
return err;
}
static int devlink_dpipe_headers_fill(struct genl_info *info,
enum devlink_command cmd, int flags,
struct devlink_dpipe_headers *
dpipe_headers)
{
struct devlink *devlink = info->user_ptr[0];
struct nlattr *headers_attr;
struct sk_buff *skb = NULL;
struct nlmsghdr *nlh;
void *hdr;
int i, j;
int err;
i = 0;
start_again:
err = devlink_dpipe_send_and_alloc_skb(&skb, info);
if (err)
return err;
hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
&devlink_nl_family, NLM_F_MULTI, cmd);
if (!hdr) {
nlmsg_free(skb);
return -EMSGSIZE;
}
if (devlink_nl_put_handle(skb, devlink))
goto nla_put_failure;
headers_attr = nla_nest_start(skb, DEVLINK_ATTR_DPIPE_HEADERS);
if (!headers_attr)
goto nla_put_failure;
j = 0;
for (; i < dpipe_headers->headers_count; i++) {
err = devlink_dpipe_header_put(skb, dpipe_headers->headers[i]);
if (err) {
if (!j)
goto err_table_put;
break;
}
j++;
}
nla_nest_end(skb, headers_attr);
genlmsg_end(skb, hdr);
if (i != dpipe_headers->headers_count)
goto start_again;
send_done:
nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
NLMSG_DONE, 0, flags | NLM_F_MULTI);
if (!nlh) {
err = devlink_dpipe_send_and_alloc_skb(&skb, info);
if (err)
return err;
goto send_done;
}
return genlmsg_reply(skb, info);
nla_put_failure:
err = -EMSGSIZE;
err_table_put:
nlmsg_free(skb);
return err;
}
static int devlink_nl_cmd_dpipe_headers_get(struct sk_buff *skb,
struct genl_info *info)
{
struct devlink *devlink = info->user_ptr[0];
if (!devlink->dpipe_headers)
return -EOPNOTSUPP;
return devlink_dpipe_headers_fill(info, DEVLINK_CMD_DPIPE_HEADERS_GET,
0, devlink->dpipe_headers);
}
static int devlink_dpipe_table_counters_set(struct devlink *devlink,
const char *table_name,
bool enable)
{
struct devlink_dpipe_table *table;
table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
table_name);
if (!table)
return -EINVAL;
if (table->counter_control_extern)
return -EOPNOTSUPP;
if (!(table->counters_enabled ^ enable))
return 0;
table->counters_enabled = enable;
if (table->table_ops->counters_set_update)
table->table_ops->counters_set_update(table->priv, enable);
return 0;
}
static int devlink_nl_cmd_dpipe_table_counters_set(struct sk_buff *skb,
struct genl_info *info)
{
struct devlink *devlink = info->user_ptr[0];
const char *table_name;
bool counters_enable;
if (!info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME] ||
!info->attrs[DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED])
return -EINVAL;
table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]);
counters_enable = !!nla_get_u8(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED]);
return devlink_dpipe_table_counters_set(devlink, table_name,
counters_enable);
}
static struct devlink_resource *
devlink_resource_find(struct devlink *devlink,
struct devlink_resource *resource, u64 resource_id)
{
struct list_head *resource_list;
if (resource)
resource_list = &resource->resource_list;
else
resource_list = &devlink->resource_list;
list_for_each_entry(resource, resource_list, list) {
struct devlink_resource *child_resource;
if (resource->id == resource_id)
return resource;
child_resource = devlink_resource_find(devlink, resource,
resource_id);
if (child_resource)
return child_resource;
}
return NULL;
}
static void
devlink_resource_validate_children(struct devlink_resource *resource)
{
struct devlink_resource *child_resource;
bool size_valid = true;
u64 parts_size = 0;
if (list_empty(&resource->resource_list))
goto out;
list_for_each_entry(child_resource, &resource->resource_list, list)
parts_size += child_resource->size_new;
if (parts_size > resource->size_new)
size_valid = false;
out:
resource->size_valid = size_valid;
}
static int
devlink_resource_validate_size(struct devlink_resource *resource, u64 size,
struct netlink_ext_ack *extack)
{
u64 reminder;
int err = 0;
if (size > resource->size_params.size_max) {
NL_SET_ERR_MSG_MOD(extack, "Size larger than maximum");
err = -EINVAL;
}
if (size < resource->size_params.size_min) {
NL_SET_ERR_MSG_MOD(extack, "Size smaller than minimum");
err = -EINVAL;
}
div64_u64_rem(size, resource->size_params.size_granularity, &reminder);
if (reminder) {
NL_SET_ERR_MSG_MOD(extack, "Wrong granularity");
err = -EINVAL;
}
return err;
}
static int devlink_nl_cmd_resource_set(struct sk_buff *skb,
struct genl_info *info)
{
struct devlink *devlink = info->user_ptr[0];
struct devlink_resource *resource;
u64 resource_id;
u64 size;
int err;
if (!info->attrs[DEVLINK_ATTR_RESOURCE_ID] ||
!info->attrs[DEVLINK_ATTR_RESOURCE_SIZE])
return -EINVAL;
resource_id = nla_get_u64(info->attrs[DEVLINK_ATTR_RESOURCE_ID]);
resource = devlink_resource_find(devlink, NULL, resource_id);
if (!resource)
return -EINVAL;
size = nla_get_u64(info->attrs[DEVLINK_ATTR_RESOURCE_SIZE]);
err = devlink_resource_validate_size(resource, size, info->extack);
if (err)
return err;
resource->size_new = size;
devlink_resource_validate_children(resource);
if (resource->parent)
devlink_resource_validate_children(resource->parent);
return 0;
}
static int
devlink_resource_size_params_put(struct devlink_resource *resource,
struct sk_buff *skb)
{
struct devlink_resource_size_params *size_params;
size_params = &resource->size_params;
if (nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_GRAN,
size_params->size_granularity, DEVLINK_ATTR_PAD) ||
nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_MAX,
size_params->size_max, DEVLINK_ATTR_PAD) ||
nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_MIN,
size_params->size_min, DEVLINK_ATTR_PAD) ||
nla_put_u8(skb, DEVLINK_ATTR_RESOURCE_UNIT, size_params->unit))
return -EMSGSIZE;
return 0;
}
static int devlink_resource_occ_put(struct devlink_resource *resource,
struct sk_buff *skb)
{
if (!resource->occ_get)
return 0;
return nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_OCC,
resource->occ_get(resource->occ_get_priv),
DEVLINK_ATTR_PAD);
}
static int devlink_resource_put(struct devlink *devlink, struct sk_buff *skb,
struct devlink_resource *resource)
{
struct devlink_resource *child_resource;
struct nlattr *child_resource_attr;
struct nlattr *resource_attr;
resource_attr = nla_nest_start(skb, DEVLINK_ATTR_RESOURCE);
if (!resource_attr)
return -EMSGSIZE;
if (nla_put_string(skb, DEVLINK_ATTR_RESOURCE_NAME, resource->name) ||
nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE, resource->size,
DEVLINK_ATTR_PAD) ||
nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_ID, resource->id,
DEVLINK_ATTR_PAD))
goto nla_put_failure;
if (resource->size != resource->size_new)
nla_put_u64_64bit(skb, DEVLINK_ATTR_RESOURCE_SIZE_NEW,
resource->size_new, DEVLINK_ATTR_PAD);
if (devlink_resource_occ_put(resource, skb))
goto nla_put_failure;
if (devlink_resource_size_params_put(resource, skb))
goto nla_put_failure;
if (list_empty(&resource->resource_list))
goto out;
if (nla_put_u8(skb, DEVLINK_ATTR_RESOURCE_SIZE_VALID,
resource->size_valid))
goto nla_put_failure;
child_resource_attr = nla_nest_start(skb, DEVLINK_ATTR_RESOURCE_LIST);
if (!child_resource_attr)
goto nla_put_failure;
list_for_each_entry(child_resource, &resource->resource_list, list) {
if (devlink_resource_put(devlink, skb, child_resource))
goto resource_put_failure;
}
nla_nest_end(skb, child_resource_attr);
out:
nla_nest_end(skb, resource_attr);
return 0;
resource_put_failure:
nla_nest_cancel(skb, child_resource_attr);
nla_put_failure:
nla_nest_cancel(skb, resource_attr);
return -EMSGSIZE;
}
static int devlink_resource_fill(struct genl_info *info,
enum devlink_command cmd, int flags)
{
struct devlink *devlink = info->user_ptr[0];
struct devlink_resource *resource;
struct nlattr *resources_attr;
struct sk_buff *skb = NULL;
struct nlmsghdr *nlh;
bool incomplete;
void *hdr;
int i;
int err;
resource = list_first_entry(&devlink->resource_list,
struct devlink_resource, list);
start_again:
err = devlink_dpipe_send_and_alloc_skb(&skb, info);
if (err)
return err;
hdr = genlmsg_put(skb, info->snd_portid, info->snd_seq,
&devlink_nl_family, NLM_F_MULTI, cmd);
if (!hdr) {
nlmsg_free(skb);
return -EMSGSIZE;
}
if (devlink_nl_put_handle(skb, devlink))
goto nla_put_failure;
resources_attr = nla_nest_start(skb, DEVLINK_ATTR_RESOURCE_LIST);
if (!resources_attr)
goto nla_put_failure;
incomplete = false;
i = 0;
list_for_each_entry_from(resource, &devlink->resource_list, list) {
err = devlink_resource_put(devlink, skb, resource);
if (err) {
if (!i)
goto err_resource_put;
incomplete = true;
break;
}
i++;
}
nla_nest_end(skb, resources_attr);
genlmsg_end(skb, hdr);
if (incomplete)
goto start_again;
send_done:
nlh = nlmsg_put(skb, info->snd_portid, info->snd_seq,
NLMSG_DONE, 0, flags | NLM_F_MULTI);
if (!nlh) {
err = devlink_dpipe_send_and_alloc_skb(&skb, info);
if (err)
return err;
goto send_done;
}
return genlmsg_reply(skb, info);
nla_put_failure:
err = -EMSGSIZE;
err_resource_put:
nlmsg_free(skb);
return err;
}
static int devlink_nl_cmd_resource_dump(struct sk_buff *skb,
struct genl_info *info)
{
struct devlink *devlink = info->user_ptr[0];
if (list_empty(&devlink->resource_list))
return -EOPNOTSUPP;
return devlink_resource_fill(info, DEVLINK_CMD_RESOURCE_DUMP, 0);
}
static int
devlink_resources_validate(struct devlink *devlink,
struct devlink_resource *resource,
struct genl_info *info)
{
struct list_head *resource_list;
int err = 0;
if (resource)
resource_list = &resource->resource_list;
else
resource_list = &devlink->resource_list;
list_for_each_entry(resource, resource_list, list) {
if (!resource->size_valid)
return -EINVAL;
err = devlink_resources_validate(devlink, resource, info);
if (err)
return err;
}
return err;
}
static int devlink_nl_cmd_reload(struct sk_buff *skb, struct genl_info *info)
{
struct devlink *devlink = info->user_ptr[0];
int err;
if (!devlink->ops->reload)
return -EOPNOTSUPP;
err = devlink_resources_validate(devlink, NULL, info);
if (err) {
NL_SET_ERR_MSG_MOD(info->extack, "resources size validation failed");
return err;
}
return devlink->ops->reload(devlink, info->extack);
}
static const struct devlink_param devlink_param_generic[] = {
{
.id = DEVLINK_PARAM_GENERIC_ID_INT_ERR_RESET,
.name = DEVLINK_PARAM_GENERIC_INT_ERR_RESET_NAME,
.type = DEVLINK_PARAM_GENERIC_INT_ERR_RESET_TYPE,
},
{
.id = DEVLINK_PARAM_GENERIC_ID_MAX_MACS,
.name = DEVLINK_PARAM_GENERIC_MAX_MACS_NAME,
.type = DEVLINK_PARAM_GENERIC_MAX_MACS_TYPE,
},
{
.id = DEVLINK_PARAM_GENERIC_ID_ENABLE_SRIOV,
.name = DEVLINK_PARAM_GENERIC_ENABLE_SRIOV_NAME,
.type = DEVLINK_PARAM_GENERIC_ENABLE_SRIOV_TYPE,
},
{
.id = DEVLINK_PARAM_GENERIC_ID_REGION_SNAPSHOT,
.name = DEVLINK_PARAM_GENERIC_REGION_SNAPSHOT_NAME,
.type = DEVLINK_PARAM_GENERIC_REGION_SNAPSHOT_TYPE,
},
{
.id = DEVLINK_PARAM_GENERIC_ID_IGNORE_ARI,
.name = DEVLINK_PARAM_GENERIC_IGNORE_ARI_NAME,
.type = DEVLINK_PARAM_GENERIC_IGNORE_ARI_TYPE,
},
{
.id = DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MAX,
.name = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MAX_NAME,
.type = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MAX_TYPE,
},
{
.id = DEVLINK_PARAM_GENERIC_ID_MSIX_VEC_PER_PF_MIN,
.name = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MIN_NAME,
.type = DEVLINK_PARAM_GENERIC_MSIX_VEC_PER_PF_MIN_TYPE,
},
{
.id = DEVLINK_PARAM_GENERIC_ID_FW_LOAD_POLICY,
.name = DEVLINK_PARAM_GENERIC_FW_LOAD_POLICY_NAME,
.type = DEVLINK_PARAM_GENERIC_FW_LOAD_POLICY_TYPE,
},
};
static int devlink_param_generic_verify(const struct devlink_param *param)
{
/* verify it match generic parameter by id and name */
if (param->id > DEVLINK_PARAM_GENERIC_ID_MAX)
return -EINVAL;
if (strcmp(param->name, devlink_param_generic[param->id].name))
return -ENOENT;
WARN_ON(param->type != devlink_param_generic[param->id].type);
return 0;
}
static int devlink_param_driver_verify(const struct devlink_param *param)
{
int i;
if (param->id <= DEVLINK_PARAM_GENERIC_ID_MAX)
return -EINVAL;
/* verify no such name in generic params */
for (i = 0; i <= DEVLINK_PARAM_GENERIC_ID_MAX; i++)
if (!strcmp(param->name, devlink_param_generic[i].name))
return -EEXIST;
return 0;
}
static struct devlink_param_item *
devlink_param_find_by_name(struct list_head *param_list,
const char *param_name)
{
struct devlink_param_item *param_item;
list_for_each_entry(param_item, param_list, list)
if (!strcmp(param_item->param->name, param_name))
return param_item;
return NULL;