diff options
Diffstat (limited to 'net/core/devlink.c')
| -rw-r--r-- | net/core/devlink.c | 4827 |
1 files changed, 0 insertions, 4827 deletions
diff --git a/net/core/devlink.c b/net/core/devlink.c deleted file mode 100644 index abb0da9d7b4b..000000000000 --- a/net/core/devlink.c +++ /dev/null @@ -1,4827 +0,0 @@ -/* - * 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, ®ion->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; -} - -static struct devlink_param_item * -devlink_param_find_by_id(struct list_head *param_list, u32 param_id) -{ - struct devlink_param_item *param_item; - - list_for_each_entry(param_item, param_list, list) - if (param_item->param->id == param_id) - return param_item; - return NULL; -} - -static bool -devlink_param_cmode_is_supported(const struct devlink_param *param, - enum devlink_param_cmode cmode) -{ - return test_bit(cmode, ¶m->supported_cmodes); -} - -static int devlink_param_get(struct devlink *devlink, - const struct devlink_param *param, - struct devlink_param_gset_ctx *ctx) -{ - if (!param->get) - return -EOPNOTSUPP; - return param->get(devlink, param->id, ctx); -} - -static int devlink_param_set(struct devlink *devlink, - const struct devlink_param *param, - struct devlink_param_gset_ctx *ctx) -{ - if (!param->set) - return -EOPNOTSUPP; - return param->set(devlink, param->id, ctx); -} - -static int -devlink_param_type_to_nla_type(enum devlink_param_type param_type) -{ - switch (param_type) { - case DEVLINK_PARAM_TYPE_U8: - return NLA_U8; - case DEVLINK_PARAM_TYPE_U16: - return NLA_U16; - case DEVLINK_PARAM_TYPE_U32: - return NLA_U32; - case DEVLINK_PARAM_TYPE_STRING: - return NLA_STRING; - case DEVLINK_PARAM_TYPE_BOOL: - return NLA_FLAG; - default: - return -EINVAL; - } -} - -static int -devlink_nl_param_value_fill_one(struct sk_buff *msg, - enum devlink_param_type type, - enum devlink_param_cmode cmode, - union devlink_param_value val) -{ - struct nlattr *param_value_attr; - - param_value_attr = nla_nest_start(msg, DEVLINK_ATTR_PARAM_VALUE); - if (!param_value_attr) - goto nla_put_failure; - - if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_VALUE_CMODE, cmode)) - goto value_nest_cancel; - - switch (type) { - case DEVLINK_PARAM_TYPE_U8: - if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu8)) - goto value_nest_cancel; - break; - case DEVLINK_PARAM_TYPE_U16: - if (nla_put_u16(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu16)) - goto value_nest_cancel; - break; - case DEVLINK_PARAM_TYPE_U32: - if (nla_put_u32(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, val.vu32)) - goto value_nest_cancel; - break; - case DEVLINK_PARAM_TYPE_STRING: - if (nla_put_string(msg, DEVLINK_ATTR_PARAM_VALUE_DATA, - val.vstr)) - goto value_nest_cancel; - break; - case DEVLINK_PARAM_TYPE_BOOL: - if (val.vbool && - nla_put_flag(msg, DEVLINK_ATTR_PARAM_VALUE_DATA)) - goto value_nest_cancel; - break; - } - - nla_nest_end(msg, param_value_attr); - return 0; - -value_nest_cancel: - nla_nest_cancel(msg, param_value_attr); -nla_put_failure: - return -EMSGSIZE; -} - -static int devlink_nl_param_fill(struct sk_buff *msg, struct devlink *devlink, - struct devlink_param_item *param_item, - enum devlink_command cmd, - u32 portid, u32 seq, int flags) -{ - union devlink_param_value param_value[DEVLINK_PARAM_CMODE_MAX + 1]; - const struct devlink_param *param = param_item->param; - struct devlink_param_gset_ctx ctx; - struct nlattr *param_values_list; - struct nlattr *param_attr; - int nla_type; - void *hdr; - int err; - int i; - - /* Get value from driver part to driverinit configuration mode */ - for (i = 0; i <= DEVLINK_PARAM_CMODE_MAX; i++) { - if (!devlink_param_cmode_is_supported(param, i)) - continue; - if (i == DEVLINK_PARAM_CMODE_DRIVERINIT) { - if (!param_item->driverinit_value_valid) - return -EOPNOTSUPP; - param_value[i] = param_item->driverinit_value; - } else { - ctx.cmode = i; - err = devlink_param_get(devlink, param, &ctx); - if (err) - return err; - param_value[i] = ctx.val; - } - } - - hdr = genlmsg_put(msg, portid, seq, &devlink_nl_family, flags, cmd); - if (!hdr) - return -EMSGSIZE; - - if (devlink_nl_put_handle(msg, devlink)) - goto genlmsg_cancel; - param_attr = nla_nest_start(msg, DEVLINK_ATTR_PARAM); - if (!param_attr) - goto genlmsg_cancel; - if (nla_put_string(msg, DEVLINK_ATTR_PARAM_NAME, param->name)) - goto param_nest_cancel; - if (param->generic && nla_put_flag(msg, DEVLINK_ATTR_PARAM_GENERIC)) - goto param_nest_cancel; - - nla_type = devlink_param_type_to_nla_type(param->type); - if (nla_type < 0) - goto param_nest_cancel; - if (nla_put_u8(msg, DEVLINK_ATTR_PARAM_TYPE, nla_type)) - goto param_nest_cancel; - - param_values_list = nla_nest_start(msg, DEVLINK_ATTR_PARAM_VALUES_LIST); - if (!param_values_list) - goto param_nest_cancel; - - for (i = 0; i <= DEVLINK_PARAM_CMODE_MAX; i++) { - if (!devlink_param_cmode_is_supported(param, i)) - continue; - err = devlink_nl_param_value_fill_one(msg, param->type, - i, param_value[i]); - if (err) - goto values_list_nest_cancel; - } - - nla_nest_end(msg, param_values_list); - nla_nest_end(msg, param_attr); - genlmsg_end(msg, hdr); - return 0; - -values_list_nest_cancel: - nla_nest_end(msg, param_values_list); -param_nest_cancel: - nla_nest_cancel(msg, param_attr); -genlmsg_cancel: - genlmsg_cancel(msg, hdr); - return -EMSGSIZE; -} - -static void devlink_param_notify(struct devlink *devlink, - struct devlink_param_item *param_item, - enum devlink_command cmd) -{ - struct sk_buff *msg; - int err; - - WARN_ON(cmd != DEVLINK_CMD_PARAM_NEW && cmd != DEVLINK_CMD_PARAM_DEL); - - msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); - if (!msg) - return; - err = devlink_nl_param_fill(msg, devlink, param_item, 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_param_get_dumpit(struct sk_buff *msg, - struct netlink_callback *cb) -{ - struct devlink_param_item *param_item; - 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; - mutex_lock(&devlink->lock); - list_for_each_entry(param_item, &devlink->param_list, list) { - if (idx < start) { - idx++; - continue; - } - err = devlink_nl_param_fill(msg, devlink, param_item, - DEVLINK_CMD_PARAM_GET, - 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_param_type_get_from_info(struct genl_info *info, - enum devlink_param_type *param_type) -{ - if (!info->attrs[DEVLINK_ATTR_PARAM_TYPE]) - return -EINVAL; - - switch (nla_get_u8(info->attrs[DEVLINK_ATTR_PARAM_TYPE])) { - case NLA_U8: - *param_type = DEVLINK_PARAM_TYPE_U8; - break; - case NLA_U16: - *param_type = DEVLINK_PARAM_TYPE_U16; - break; - case NLA_U32: - *param_type = DEVLINK_PARAM_TYPE_U32; - break; - case NLA_STRING: - *param_type = DEVLINK_PARAM_TYPE_STRING; - break; - case NLA_FLAG: - *param_type = DEVLINK_PARAM_TYPE_BOOL; - break; - default: - return -EINVAL; - } - - return 0; -} - -static int -devlink_param_value_get_from_info(const struct devlink_param *param, - struct genl_info *info, - union devlink_param_value *value) -{ - int len; - - if (param->type != DEVLINK_PARAM_TYPE_BOOL && - !info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA]) - return -EINVAL; - - switch (param->type) { - case DEVLINK_PARAM_TYPE_U8: - value->vu8 = nla_get_u8(info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA]); - break; - case DEVLINK_PARAM_TYPE_U16: - value->vu16 = nla_get_u16(info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA]); - break; - case DEVLINK_PARAM_TYPE_U32: - value->vu32 = nla_get_u32(info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA]); - break; - case DEVLINK_PARAM_TYPE_STRING: - len = strnlen(nla_data(info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA]), - nla_len(info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA])); - if (len == nla_len(info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA]) || - len >= __DEVLINK_PARAM_MAX_STRING_VALUE) - return -EINVAL; - strcpy(value->vstr, - nla_data(info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA])); - break; - case DEVLINK_PARAM_TYPE_BOOL: - value->vbool = info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA] ? - true : false; - break; - } - return 0; -} - -static struct devlink_param_item * -devlink_param_get_from_info(struct devlink *devlink, - struct genl_info *info) -{ - char *param_name; - - if (!info->attrs[DEVLINK_ATTR_PARAM_NAME]) - return NULL; - - param_name = nla_data(info->attrs[DEVLINK_ATTR_PARAM_NAME]); - return devlink_param_find_by_name(&devlink->param_list, param_name); -} - -static int devlink_nl_cmd_param_get_doit(struct sk_buff *skb, - struct genl_info *info) -{ - struct devlink *devlink = info->user_ptr[0]; - struct devlink_param_item *param_item; - struct sk_buff *msg; - int err; - - param_item = devlink_param_get_from_info(devlink, info); - if (!param_item) - return -EINVAL; - - msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); - if (!msg) - return -ENOMEM; - - err = devlink_nl_param_fill(msg, devlink, param_item, - DEVLINK_CMD_PARAM_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_param_set_doit(struct sk_buff *skb, - struct genl_info *info) -{ - struct devlink *devlink = info->user_ptr[0]; - enum devlink_param_type param_type; - struct devlink_param_gset_ctx ctx; - enum devlink_param_cmode cmode; - struct devlink_param_item *param_item; - const struct devlink_param *param; - union devlink_param_value value; - int err = 0; - - param_item = devlink_param_get_from_info(devlink, info); - if (!param_item) - return -EINVAL; - param = param_item->param; - err = devlink_param_type_get_from_info(info, ¶m_type); - if (err) - return err; - if (param_type != param->type) - return -EINVAL; - err = devlink_param_value_get_from_info(param, info, &value); - if (err) - return err; - if (param->validate) { - err = param->validate(devlink, param->id, value, info->extack); - if (err) - return err; - } - - if (!info->attrs[DEVLINK_ATTR_PARAM_VALUE_CMODE]) - return -EINVAL; - cmode = nla_get_u8(info->attrs[DEVLINK_ATTR_PARAM_VALUE_CMODE]); - if (!devlink_param_cmode_is_supported(param, cmode)) - return -EOPNOTSUPP; - - if (cmode == DEVLINK_PARAM_CMODE_DRIVERINIT) { - if (param->type == DEVLINK_PARAM_TYPE_STRING) - strcpy(param_item->driverinit_value.vstr, value.vstr); - else - param_item->driverinit_value = value; - param_item->driverinit_value_valid = true; - } else { - if (!param->set) - return -EOPNOTSUPP; - ctx.val = value; - ctx.cmode = cmode; - err = devlink_param_set(devlink, param, &ctx); - if (err) - return err; - } - - devlink_param_notify(devlink, param_item, DEVLINK_CMD_PARAM_NEW); - return 0; -} - -static int devlink_param_register_one(struct devlink *devlink, - const struct devlink_param *param) -{ - struct devlink_param_item *param_item; - - if (devlink_param_find_by_name(&devlink->param_list, - param->name)) - return -EEXIST; - - if (param->supported_cmodes == BIT(DEVLINK_PARAM_CMODE_DRIVERINIT)) - WARN_ON(param->get || param->set); - else - WARN_ON(!param->get || !param->set); - - param_item = kzalloc(sizeof(*param_item), GFP_KERNEL); - if (!param_item) - return -ENOMEM; - param_item->param = param; - - list_add_tail(¶m_item->list, &devlink->param_list); - devlink_param_notify(devlink, param_item, DEVLINK_CMD_PARAM_NEW); - return 0; -} - -static void devlink_param_unregister_one(struct devlink *devlink, - const struct devlink_param *param) -{ - struct devlink_param_item *param_item; - - param_item = devlink_param_find_by_name(&devlink->param_list, - param->name); - WARN_ON(!param_item); - devlink_param_notify(devlink, param_item, DEVLINK_CMD_PARAM_DEL); - list_del(¶m_item->list); - kfree(param_item); -} - -static int devlink_nl_region_snapshot_id_put(struct sk_buff *msg, - struct devlink *devlink, - struct devlink_snapshot *snapshot) -{ - struct nlattr *snap_attr; - int err; - - snap_attr = nla_nest_start(msg, DEVLINK_ATTR_REGION_SNAPSHOT); - if (!snap_attr) - return -EINVAL; - - err = nla_put_u32(msg, DEVLINK_ATTR_REGION_SNAPSHOT_ID, snapshot->id); - if (err) - goto nla_put_failure; - - nla_nest_end(msg, snap_attr); - return 0; - -nla_put_failure: - nla_nest_cancel(msg, snap_attr); - return err; -} - -static int devlink_nl_region_snapshots_id_put(struct sk_buff *msg, - struct devlink *devlink, - struct devlink_region *region) -{ - struct devlink_snapshot *snapshot; - struct nlattr *snapshots_attr; - int err; - - snapshots_attr = nla_nest_start(msg, DEVLINK_ATTR_REGION_SNAPSHOTS); - if (!snapshots_attr) - return -EINVAL; - - list_for_each_entry(snapshot, ®ion->snapshot_list, list) { - err = devlink_nl_region_snapshot_id_put(msg, devlink, snapshot); - if (err) - goto nla_put_failure; - } - - nla_nest_end(msg, snapshots_attr); - return 0; - -nla_put_failure: - nla_nest_cancel(msg, snapshots_attr); - return err; -} - -static int devlink_nl_region_fill(struct sk_buff *msg, struct devlink *devlink, - enum devlink_command cmd, u32 portid, - u32 seq, int flags, - struct devlink_region *region) -{ - void *hdr; - int err; - - 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; - - err = nla_put_string(msg, DEVLINK_ATTR_REGION_NAME, region->name); - if (err) - goto nla_put_failure; - - err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_SIZE, - region->size, - DEVLINK_ATTR_PAD); - if (err) - goto nla_put_failure; - - err = devlink_nl_region_snapshots_id_put(msg, devlink, region); - if (err) - goto nla_put_failure; - - genlmsg_end(msg, hdr); - return 0; - -nla_put_failure: - genlmsg_cancel(msg, hdr); - return err; -} - -static void devlink_nl_region_notify(struct devlink_region *region, - struct devlink_snapshot *snapshot, - enum devlink_command cmd) -{ - struct devlink *devlink = region->devlink; - struct sk_buff *msg; - void *hdr; - int err; - - WARN_ON(cmd != DEVLINK_CMD_REGION_NEW && cmd != DEVLINK_CMD_REGION_DEL); - - msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); - if (!msg) - return; - - hdr = genlmsg_put(msg, 0, 0, &devlink_nl_family, 0, cmd); - if (!hdr) - goto out_free_msg; - - err = devlink_nl_put_handle(msg, devlink); - if (err) - goto out_cancel_msg; - - err = nla_put_string(msg, DEVLINK_ATTR_REGION_NAME, - region->name); - if (err) - goto out_cancel_msg; - - if (snapshot) { - err = nla_put_u32(msg, DEVLINK_ATTR_REGION_SNAPSHOT_ID, - snapshot->id); - if (err) - goto out_cancel_msg; - } else { - err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_SIZE, - region->size, DEVLINK_ATTR_PAD); - if (err) - goto out_cancel_msg; - } - genlmsg_end(msg, hdr); - - genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), - msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL); - - return; - -out_cancel_msg: - genlmsg_cancel(msg, hdr); -out_free_msg: - nlmsg_free(msg); -} - -static int devlink_nl_cmd_region_get_doit(struct sk_buff *skb, - struct genl_info *info) -{ - struct devlink *devlink = info->user_ptr[0]; - struct devlink_region *region; - const char *region_name; - struct sk_buff *msg; - int err; - - if (!info->attrs[DEVLINK_ATTR_REGION_NAME]) - return -EINVAL; - - region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]); - region = devlink_region_get_by_name(devlink, region_name); - if (!region) - return -EINVAL; - - msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); - if (!msg) - return -ENOMEM; - - err = devlink_nl_region_fill(msg, devlink, DEVLINK_CMD_REGION_GET, - info->snd_portid, info->snd_seq, 0, - region); - if (err) { - nlmsg_free(msg); - return err; - } - - return genlmsg_reply(msg, info); -} - -static int devlink_nl_cmd_region_get_dumpit(struct sk_buff *msg, - struct netlink_callback *cb) -{ - struct devlink_region *region; - 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; - - mutex_lock(&devlink->lock); - list_for_each_entry(region, &devlink->region_list, list) { - if (idx < start) { - idx++; - continue; - } - err = devlink_nl_region_fill(msg, devlink, - DEVLINK_CMD_REGION_GET, - NETLINK_CB(cb->skb).portid, - cb->nlh->nlmsg_seq, - NLM_F_MULTI, region); - 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_cmd_region_del(struct sk_buff *skb, - struct genl_info *info) -{ - struct devlink *devlink = info->user_ptr[0]; - struct devlink_snapshot *snapshot; - struct devlink_region *region; - const char *region_name; - u32 snapshot_id; - - if (!info->attrs[DEVLINK_ATTR_REGION_NAME] || - !info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]) - return -EINVAL; - - region_name = nla_data(info->attrs[DEVLINK_ATTR_REGION_NAME]); - snapshot_id = nla_get_u32(info->attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]); - - region = devlink_region_get_by_name(devlink, region_name); - if (!region) - return -EINVAL; - - snapshot = devlink_region_snapshot_get_by_id(region, snapshot_id); - if (!snapshot) - return -EINVAL; - - devlink_nl_region_notify(region, snapshot, DEVLINK_CMD_REGION_DEL); - devlink_region_snapshot_del(snapshot); - return 0; -} - -static int devlink_nl_cmd_region_read_chunk_fill(struct sk_buff *msg, - struct devlink *devlink, - u8 *chunk, u32 chunk_size, - u64 addr) -{ - struct nlattr *chunk_attr; - int err; - - chunk_attr = nla_nest_start(msg, DEVLINK_ATTR_REGION_CHUNK); - if (!chunk_attr) - return -EINVAL; - - err = nla_put(msg, DEVLINK_ATTR_REGION_CHUNK_DATA, chunk_size, chunk); - if (err) - goto nla_put_failure; - - err = nla_put_u64_64bit(msg, DEVLINK_ATTR_REGION_CHUNK_ADDR, addr, - DEVLINK_ATTR_PAD); - if (err) - goto nla_put_failure; - - nla_nest_end(msg, chunk_attr); - return 0; - -nla_put_failure: - nla_nest_cancel(msg, chunk_attr); - return err; -} - -#define DEVLINK_REGION_READ_CHUNK_SIZE 256 - -static int devlink_nl_region_read_snapshot_fill(struct sk_buff *skb, - struct devlink *devlink, - struct devlink_region *region, - struct nlattr **attrs, - u64 start_offset, - u64 end_offset, - bool dump, - u64 *new_offset) -{ - struct devlink_snapshot *snapshot; - u64 curr_offset = start_offset; - u32 snapshot_id; - int err = 0; - - *new_offset = start_offset; - - snapshot_id = nla_get_u32(attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]); - snapshot = devlink_region_snapshot_get_by_id(region, snapshot_id); - if (!snapshot) - return -EINVAL; - - if (end_offset > snapshot->data_len || dump) - end_offset = snapshot->data_len; - - while (curr_offset < end_offset) { - u32 data_size; - u8 *data; - - if (end_offset - curr_offset < DEVLINK_REGION_READ_CHUNK_SIZE) - data_size = end_offset - curr_offset; - else - data_size = DEVLINK_REGION_READ_CHUNK_SIZE; - - data = &snapshot->data[curr_offset]; - err = devlink_nl_cmd_region_read_chunk_fill(skb, devlink, - data, data_size, - curr_offset); - if (err) - break; - - curr_offset += data_size; - } - *new_offset = curr_offset; - - return err; -} - -static int devlink_nl_cmd_region_read_dumpit(struct sk_buff *skb, - struct netlink_callback *cb) -{ - u64 ret_offset, start_offset, end_offset = 0; - struct nlattr *attrs[DEVLINK_ATTR_MAX + 1]; - const struct genl_ops *ops = cb->data; - struct devlink_region *region; - struct nlattr *chunks_attr; - const char *region_name; - struct devlink *devlink; - bool dump = true; - void *hdr; - int err; - - start_offset = *((u64 *)&cb->args[0]); - - err = nlmsg_parse(cb->nlh, GENL_HDRLEN + devlink_nl_family.hdrsize, - attrs, DEVLINK_ATTR_MAX, ops->policy, cb->extack); - if (err) - goto out; - - devlink = devlink_get_from_attrs(sock_net(cb->skb->sk), attrs); - if (IS_ERR(devlink)) - goto out; - - mutex_lock(&devlink_mutex); - mutex_lock(&devlink->lock); - - if (!attrs[DEVLINK_ATTR_REGION_NAME] || - !attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]) - goto out_unlock; - - region_name = nla_data(attrs[DEVLINK_ATTR_REGION_NAME]); - region = devlink_region_get_by_name(devlink, region_name); - if (!region) - goto out_unlock; - - hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, - &devlink_nl_family, NLM_F_ACK | NLM_F_MULTI, - DEVLINK_CMD_REGION_READ); - if (!hdr) - goto out_unlock; - - err = devlink_nl_put_handle(skb, devlink); - if (err) - goto nla_put_failure; - - err = nla_put_string(skb, DEVLINK_ATTR_REGION_NAME, region_name); - if (err) - goto nla_put_failure; - - chunks_attr = nla_nest_start(skb, DEVLINK_ATTR_REGION_CHUNKS); - if (!chunks_attr) - goto nla_put_failure; - - if (attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR] && - attrs[DEVLINK_ATTR_REGION_CHUNK_LEN]) { - if (!start_offset) - start_offset = - nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR]); - - end_offset = nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_ADDR]); - end_offset += nla_get_u64(attrs[DEVLINK_ATTR_REGION_CHUNK_LEN]); - dump = false; - } - - err = devlink_nl_region_read_snapshot_fill(skb, devlink, - region, attrs, - start_offset, - end_offset, dump, - &ret_offset); - - if (err && err != -EMSGSIZE) - goto nla_put_failure; - - /* Check if there was any progress done to prevent infinite loop */ - if (ret_offset == start_offset) - goto nla_put_failure; - - *((u64 *)&cb->args[0]) = ret_offset; - - nla_nest_end(skb, chunks_attr); - genlmsg_end(skb, hdr); - mutex_unlock(&devlink->lock); - mutex_unlock(&devlink_mutex); - - return skb->len; - -nla_put_failure: - genlmsg_cancel(skb, hdr); -out_unlock: - mutex_unlock(&devlink->lock); - mutex_unlock(&devlink_mutex); -out: - return 0; -} - -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 }, - [DEVLINK_ATTR_SB_INDEX] = { .type = NLA_U32 }, - [DEVLINK_ATTR_SB_POOL_INDEX] = { .type = NLA_U16 }, - [DEVLINK_ATTR_SB_POOL_TYPE] = { .type = NLA_U8 }, - [DEVLINK_ATTR_SB_POOL_SIZE] = { .type = NLA_U32 }, - [DEVLINK_ATTR_SB_POOL_THRESHOLD_TYPE] = { .type = NLA_U8 }, - [DEVLINK_ATTR_SB_THRESHOLD] = { .type = NLA_U32 }, - [DEVLINK_ATTR_SB_TC_INDEX] = { .type = NLA_U16 }, - [DEVLINK_ATTR_ESWITCH_MODE] = { .type = NLA_U16 }, - [DEVLINK_ATTR_ESWITCH_INLINE_MODE] = { .type = NLA_U8 }, - [DEVLINK_ATTR_ESWITCH_ENCAP_MODE] = { .type = NLA_U8 }, - [DEVLINK_ATTR_DPIPE_TABLE_NAME] = { .type = NLA_NUL_STRING }, - [DEVLINK_ATTR_DPIPE_TABLE_COUNTERS_ENABLED] = { .type = NLA_U8 }, - [DEVLINK_ATTR_RESOURCE_ID] = { .type = NLA_U64}, - [DEVLINK_ATTR_RESOURCE_SIZE] = { .type = NLA_U64}, - [DEVLINK_ATTR_PARAM_NAME] = { .type = NLA_NUL_STRING }, - [DEVLINK_ATTR_PARAM_TYPE] = { .type = NLA_U8 }, - [DEVLINK_ATTR_PARAM_VALUE_CMODE] = { .type = NLA_U8 }, - [DEVLINK_ATTR_REGION_NAME] = { .type = NLA_NUL_STRING }, - [DEVLINK_ATTR_REGION_SNAPSHOT_ID] = { .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, - .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK, - /* 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, - .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK | - DEVLINK_NL_FLAG_NO_LOCK, - }, - { - .cmd = DEVLINK_CMD_PORT_UNSPLIT, - .doit = devlink_nl_cmd_port_unsplit_doit, - .policy = devlink_nl_policy, - .flags = GENL_ADMIN_PERM, - .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK | - DEVLINK_NL_FLAG_NO_LOCK, - }, - { - .cmd = DEVLINK_CMD_SB_GET, - .doit = devlink_nl_cmd_sb_get_doit, - .dumpit = devlink_nl_cmd_sb_get_dumpit, - .policy = devlink_nl_policy, - .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK | - DEVLINK_NL_FLAG_NEED_SB, - /* can be retrieved by unprivileged users */ - }, - { - .cmd = DEVLINK_CMD_SB_POOL_GET, - .doit = devlink_nl_cmd_sb_pool_get_doit, - .dumpit = devlink_nl_cmd_sb_pool_get_dumpit, - .policy = devlink_nl_policy, - .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK | - DEVLINK_NL_FLAG_NEED_SB, - /* can be retrieved by unprivileged users */ - }, - { - .cmd = DEVLINK_CMD_SB_POOL_SET, - .doit = devlink_nl_cmd_sb_pool_set_doit, - .policy = devlink_nl_policy, - .flags = GENL_ADMIN_PERM, - .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK | - DEVLINK_NL_FLAG_NEED_SB, - }, - { - .cmd = DEVLINK_CMD_SB_PORT_POOL_GET, - .doit = devlink_nl_cmd_sb_port_pool_get_doit, - .dumpit = devlink_nl_cmd_sb_port_pool_get_dumpit, - .policy = devlink_nl_policy, - .internal_flags = DEVLINK_NL_FLAG_NEED_PORT | - DEVLINK_NL_FLAG_NEED_SB, - /* can be retrieved by unprivileged users */ - }, - { - .cmd = DEVLINK_CMD_SB_PORT_POOL_SET, - .doit = devlink_nl_cmd_sb_port_pool_set_doit, - .policy = devlink_nl_policy, - .flags = GENL_ADMIN_PERM, - .internal_flags = DEVLINK_NL_FLAG_NEED_PORT | - DEVLINK_NL_FLAG_NEED_SB, - }, - { - .cmd = DEVLINK_CMD_SB_TC_POOL_BIND_GET, - .doit = devlink_nl_cmd_sb_tc_pool_bind_get_doit, - .dumpit = devlink_nl_cmd_sb_tc_pool_bind_get_dumpit, - .policy = devlink_nl_policy, - .internal_flags = DEVLINK_NL_FLAG_NEED_PORT | - DEVLINK_NL_FLAG_NEED_SB, - /* can be retrieved by unprivileged users */ - }, - { - .cmd = DEVLINK_CMD_SB_TC_POOL_BIND_SET, - .doit = devlink_nl_cmd_sb_tc_pool_bind_set_doit, - .policy = devlink_nl_policy, - .flags = GENL_ADMIN_PERM, - .internal_flags = DEVLINK_NL_FLAG_NEED_PORT | - DEVLINK_NL_FLAG_NEED_SB, - }, - { - .cmd = DEVLINK_CMD_SB_OCC_SNAPSHOT, - .doit = devlink_nl_cmd_sb_occ_snapshot_doit, - .policy = devlink_nl_policy, - .flags = GENL_ADMIN_PERM, - .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK | - DEVLINK_NL_FLAG_NEED_SB, - }, - { - .cmd = DEVLINK_CMD_SB_OCC_MAX_CLEAR, - .doit = devlink_nl_cmd_sb_occ_max_clear_doit, - .policy = devlink_nl_policy, - .flags = GENL_ADMIN_PERM, - .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK | - DEVLINK_NL_FLAG_NEED_SB, - }, - { - .cmd = DEVLINK_CMD_ESWITCH_GET, - .doit = devlink_nl_cmd_eswitch_get_doit, - .policy = devlink_nl_policy, - .flags = GENL_ADMIN_PERM, - .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK, - }, - { - .cmd = DEVLINK_CMD_ESWITCH_SET, - .doit = devlink_nl_cmd_eswitch_set_doit, - .policy = devlink_nl_policy, - .flags = GENL_ADMIN_PERM, - .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK | - DEVLINK_NL_FLAG_NO_LOCK, - }, - { - .cmd = DEVLINK_CMD_DPIPE_TABLE_GET, - .doit = devlink_nl_cmd_dpipe_table_get, - .policy = devlink_nl_policy, - .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK, - /* can be retrieved by unprivileged users */ - }, - { - .cmd = DEVLINK_CMD_DPIPE_ENTRIES_GET, - .doit = devlink_nl_cmd_dpipe_entries_get, - .policy = devlink_nl_policy, - .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK, - /* can be retrieved by unprivileged users */ - }, - { - .cmd = DEVLINK_CMD_DPIPE_HEADERS_GET, - .doit = devlink_nl_cmd_dpipe_headers_get, - .policy = devlink_nl_policy, - .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK, - /* can be retrieved by unprivileged users */ - }, - { - .cmd = DEVLINK_CMD_DPIPE_TABLE_COUNTERS_SET, - .doit = devlink_nl_cmd_dpipe_table_counters_set, - .policy = devlink_nl_policy, - .flags = GENL_ADMIN_PERM, - .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK, - }, - { - .cmd = DEVLINK_CMD_RESOURCE_SET, - .doit = devlink_nl_cmd_resource_set, - .policy = devlink_nl_policy, - .flags = GENL_ADMIN_PERM, - .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK, - }, - { - .cmd = DEVLINK_CMD_RESOURCE_DUMP, - .doit = devlink_nl_cmd_resource_dump, - .policy = devlink_nl_policy, - .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK, - /* can be retrieved by unprivileged users */ - }, - { - .cmd = DEVLINK_CMD_RELOAD, - .doit = devlink_nl_cmd_reload, - .policy = devlink_nl_policy, - .flags = GENL_ADMIN_PERM, - .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK | - DEVLINK_NL_FLAG_NO_LOCK, - }, - { - .cmd = DEVLINK_CMD_PARAM_GET, - .doit = devlink_nl_cmd_param_get_doit, - .dumpit = devlink_nl_cmd_param_get_dumpit, - .policy = devlink_nl_policy, - .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK, - /* can be retrieved by unprivileged users */ - }, - { - .cmd = DEVLINK_CMD_PARAM_SET, - .doit = devlink_nl_cmd_param_set_doit, - .policy = devlink_nl_policy, - .flags = GENL_ADMIN_PERM, - .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK, - }, - { - .cmd = DEVLINK_CMD_REGION_GET, - .doit = devlink_nl_cmd_region_get_doit, - .dumpit = devlink_nl_cmd_region_get_dumpit, - .policy = devlink_nl_policy, - .flags = GENL_ADMIN_PERM, - .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK, - }, - { - .cmd = DEVLINK_CMD_REGION_DEL, - .doit = devlink_nl_cmd_region_del, - .policy = devlink_nl_policy, - .flags = GENL_ADMIN_PERM, - .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK, - }, - { - .cmd = DEVLINK_CMD_REGION_READ, - .dumpit = devlink_nl_cmd_region_read_dumpit, - .policy = devlink_nl_policy, - .flags = GENL_ADMIN_PERM, - .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK, - }, -}; - -static struct genl_family devlink_nl_family __ro_after_init = { - .name = DEVLINK_GENL_NAME, - .version = DEVLINK_GENL_VERSION, - .maxattr = DEVLINK_ATTR_MAX, - .netnsok = true, - .pre_doit = devlink_nl_pre_doit, - .post_doit = devlink_nl_post_doit, - .module = THIS_MODULE, - .ops = devlink_nl_ops, - .n_ops = ARRAY_SIZE(devlink_nl_ops), - .mcgrps = devlink_nl_mcgrps, - .n_mcgrps = ARRAY_SIZE(devlink_nl_mcgrps), -}; - -/** - * 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); - INIT_LIST_HEAD(&devlink->sb_list); - INIT_LIST_HEAD_RCU(&devlink->dpipe_table_list); - INIT_LIST_HEAD(&devlink->resource_list); - INIT_LIST_HEAD(&devlink->param_list); - INIT_LIST_HEAD(&devlink->region_list); - mutex_init(&devlink->lock); - 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->lock); - if (devlink_port_index_exists(devlink, port_index)) { - mutex_unlock(&devlink->lock); - return -EEXIST; - } - devlink_port->devlink = devlink; - devlink_port->index = port_index; - devlink_port->registered = true; - list_add_tail(&devlink_port->list, &devlink->port_list); - mutex_unlock(&devlink->lock); - 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) -{ - struct devlink *devlink = devlink_port->devlink; - - devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_DEL); - mutex_lock(&devlink->lock); - list_del(&devlink_port->list); - mutex_unlock(&devlink->lock); -} -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_attrs_set - Set port attributes - * - * @devlink_port: devlink port - * @flavour: flavour of the port - * @port_number: number of the port that is facing user, for example - * the front panel port number - * @split: indicates if this is split port - * @split_subport_number: if the port is split, this is the number - * of subport. - */ -void devlink_port_attrs_set(struct devlink_port *devlink_port, - enum devlink_port_flavour flavour, - u32 port_number, bool split, - u32 split_subport_number) -{ - struct devlink_port_attrs *attrs = &devlink_port->attrs; - - attrs->set = true; - attrs->flavour = flavour; - attrs->port_number = port_number; - attrs->split = split; - attrs->split_subport_number = split_subport_number; - devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW); -} -EXPORT_SYMBOL_GPL(devlink_port_attrs_set); - -int devlink_port_get_phys_port_name(struct devlink_port *devlink_port, - char *name, size_t len) -{ - struct devlink_port_attrs *attrs = &devlink_port->attrs; - int n = 0; - - if (!attrs->set) - return -EOPNOTSUPP; - - switch (attrs->flavour) { - case DEVLINK_PORT_FLAVOUR_PHYSICAL: - if (!attrs->split) - n = snprintf(name, len, "p%u", attrs->port_number); - else - n = snprintf(name, len, "p%us%u", attrs->port_number, - attrs->split_subport_number); - break; - case DEVLINK_PORT_FLAVOUR_CPU: - case DEVLINK_PORT_FLAVOUR_DSA: - /* As CPU and DSA ports do not have a netdevice associated - * case should not ever happen. - */ - WARN_ON(1); - return -EINVAL; - } - - if (n >= len) - return -EINVAL; - - return 0; -} -EXPORT_SYMBOL_GPL(devlink_port_get_phys_port_name); - -int devlink_sb_register(struct devlink *devlink, unsigned int sb_index, - u32 size, u16 ingress_pools_count, - u16 egress_pools_count, u16 ingress_tc_count, - u16 egress_tc_count) -{ - struct devlink_sb *devlink_sb; - int err = 0; - - mutex_lock(&devlink->lock); - if (devlink_sb_index_exists(devlink, sb_index)) { - err = -EEXIST; - goto unlock; - } - - devlink_sb = kzalloc(sizeof(*devlink_sb), GFP_KERNEL); - if (!devlink_sb) { - err = -ENOMEM; - goto unlock; - } - devlink_sb->index = sb_index; - devlink_sb->size = size; - devlink_sb->ingress_pools_count = ingress_pools_count; - devlink_sb->egress_pools_count = egress_pools_count; - devlink_sb->ingress_tc_count = ingress_tc_count; - devlink_sb->egress_tc_count = egress_tc_count; - list_add_tail(&devlink_sb->list, &devlink->sb_list); -unlock: - mutex_unlock(&devlink->lock); - return err; -} -EXPORT_SYMBOL_GPL(devlink_sb_register); - -void devlink_sb_unregister(struct devlink *devlink, unsigned int sb_index) -{ - struct devlink_sb *devlink_sb; - - mutex_lock(&devlink->lock); - devlink_sb = devlink_sb_get_by_index(devlink, sb_index); - WARN_ON(!devlink_sb); - list_del(&devlink_sb->list); - mutex_unlock(&devlink->lock); - kfree(devlink_sb); -} -EXPORT_SYMBOL_GPL(devlink_sb_unregister); - -/** - * devlink_dpipe_headers_register - register dpipe headers - * - * @devlink: devlink - * @dpipe_headers: dpipe header array - * - * Register the headers supported by hardware. - */ -int devlink_dpipe_headers_register(struct devlink *devlink, - struct devlink_dpipe_headers *dpipe_headers) -{ - mutex_lock(&devlink->lock); - devlink->dpipe_headers = dpipe_headers; - mutex_unlock(&devlink->lock); - return 0; -} -EXPORT_SYMBOL_GPL(devlink_dpipe_headers_register); - -/** - * devlink_dpipe_headers_unregister - unregister dpipe headers - * - * @devlink: devlink - * - * Unregister the headers supported by hardware. - */ -void devlink_dpipe_headers_unregister(struct devlink *devlink) -{ - mutex_lock(&devlink->lock); - devlink->dpipe_headers = NULL; - mutex_unlock(&devlink->lock); -} -EXPORT_SYMBOL_GPL(devlink_dpipe_headers_unregister); - -/** - * devlink_dpipe_table_counter_enabled - check if counter allocation - * required - * @devlink: devlink - * @table_name: tables name - * - * Used by driver to check if counter allocation is required. - * After counter allocation is turned on the table entries - * are updated to include counter statistics. - * - * After that point on the driver must respect the counter - * state so that each entry added to the table is added - * with a counter. - */ -bool devlink_dpipe_table_counter_enabled(struct devlink *devlink, - const char *table_name) -{ - struct devlink_dpipe_table *table; - bool enabled; - - rcu_read_lock(); - table = devlink_dpipe_table_find(&devlink->dpipe_table_list, - table_name); - enabled = false; - if (table) - enabled = table->counters_enabled; - rcu_read_unlock(); - return enabled; -} -EXPORT_SYMBOL_GPL(devlink_dpipe_table_counter_enabled); - -/** - * devlink_dpipe_table_register - register dpipe table - * - * @devlink: devlink - * @table_name: table name - * @table_ops: table ops - * @priv: priv - * @counter_control_extern: external control for counters - */ -int devlink_dpipe_table_register(struct devlink *devlink, - const char *table_name, - struct devlink_dpipe_table_ops *table_ops, - void *priv, bool counter_control_extern) -{ - struct devlink_dpipe_table *table; - - if (devlink_dpipe_table_find(&devlink->dpipe_table_list, table_name)) - return -EEXIST; - - if (WARN_ON(!table_ops->size_get)) - return -EINVAL; - - table = kzalloc(sizeof(*table), GFP_KERNEL); - if (!table) - return -ENOMEM; - - table->name = table_name; - table->table_ops = table_ops; - table->priv = priv; - table->counter_control_extern = counter_control_extern; - - mutex_lock(&devlink->lock); - list_add_tail_rcu(&table->list, &devlink->dpipe_table_list); - mutex_unlock(&devlink->lock); - return 0; -} -EXPORT_SYMBOL_GPL(devlink_dpipe_table_register); - -/** - * devlink_dpipe_table_unregister - unregister dpipe table - * - * @devlink: devlink - * @table_name: table name - */ -void devlink_dpipe_table_unregister(struct devlink *devlink, - const char *table_name) -{ - struct devlink_dpipe_table *table; - - mutex_lock(&devlink->lock); - table = devlink_dpipe_table_find(&devlink->dpipe_table_list, - table_name); - if (!table) - goto unlock; - list_del_rcu(&table->list); - mutex_unlock(&devlink->lock); - kfree_rcu(table, rcu); - return; -unlock: - mutex_unlock(&devlink->lock); -} -EXPORT_SYMBOL_GPL(devlink_dpipe_table_unregister); - -/** - * devlink_resource_register - devlink resource register - * - * @devlink: devlink - * @resource_name: resource's name - * @top_hierarchy: top hierarchy - * @reload_required: reload is required for new configuration to - * apply - * @resource_size: resource's size - * @resource_id: resource's id - * @parent_reosurce_id: resource's parent id - * @size params: size parameters - */ -int devlink_resource_register(struct devlink *devlink, - const char *resource_name, - u64 resource_size, - u64 resource_id, - u64 parent_resource_id, - const struct devlink_resource_size_params *size_params) -{ - struct devlink_resource *resource; - struct list_head *resource_list; - bool top_hierarchy; - int err = 0; - - top_hierarchy = parent_resource_id == DEVLINK_RESOURCE_ID_PARENT_TOP; - - mutex_lock(&devlink->lock); - resource = devlink_resource_find(devlink, NULL, resource_id); - if (resource) { - err = -EINVAL; - goto out; - } - - resource = kzalloc(sizeof(*resource), GFP_KERNEL); - if (!resource) { - err = -ENOMEM; - goto out; - } - - if (top_hierarchy) { - resource_list = &devlink->resource_list; - } else { - struct devlink_resource *parent_resource; - - parent_resource = devlink_resource_find(devlink, NULL, - parent_resource_id); - if (parent_resource) { - resource_list = &parent_resource->resource_list; - resource->parent = parent_resource; - } else { - kfree(resource); - err = -EINVAL; - goto out; - } - } - - resource->name = resource_name; - resource->size = resource_size; - resource->size_new = resource_size; - resource->id = resource_id; - resource->size_valid = true; - memcpy(&resource->size_params, size_params, - sizeof(resource->size_params)); - INIT_LIST_HEAD(&resource->resource_list); - list_add_tail(&resource->list, resource_list); -out: - mutex_unlock(&devlink->lock); - return err; -} -EXPORT_SYMBOL_GPL(devlink_resource_register); - -/** - * devlink_resources_unregister - free all resources - * - * @devlink: devlink - * @resource: resource - */ -void devlink_resources_unregister(struct devlink *devlink, - struct devlink_resource *resource) -{ - struct devlink_resource *tmp, *child_resource; - struct list_head *resource_list; - - if (resource) - resource_list = &resource->resource_list; - else - resource_list = &devlink->resource_list; - - if (!resource) - mutex_lock(&devlink->lock); - - list_for_each_entry_safe(child_resource, tmp, resource_list, list) { - devlink_resources_unregister(devlink, child_resource); - list_del(&child_resource->list); - kfree(child_resource); - } - - if (!resource) - mutex_unlock(&devlink->lock); -} -EXPORT_SYMBOL_GPL(devlink_resources_unregister); - -/** - * devlink_resource_size_get - get and update size - * - * @devlink: devlink - * @resource_id: the requested resource id - * @p_resource_size: ptr to update - */ -int devlink_resource_size_get(struct devlink *devlink, - u64 resource_id, - u64 *p_resource_size) -{ - struct devlink_resource *resource; - int err = 0; - - mutex_lock(&devlink->lock); - resource = devlink_resource_find(devlink, NULL, resource_id); - if (!resource) { - err = -EINVAL; - goto out; - } - *p_resource_size = resource->size_new; - resource->size = resource->size_new; -out: - mutex_unlock(&devlink->lock); - return err; -} -EXPORT_SYMBOL_GPL(devlink_resource_size_get); - -/** - * devlink_dpipe_table_resource_set - set the resource id - * - * @devlink: devlink - * @table_name: table name - * @resource_id: resource id - * @resource_units: number of resource's units consumed per table's entry - */ -int devlink_dpipe_table_resource_set(struct devlink *devlink, - const char *table_name, u64 resource_id, - u64 resource_units) -{ - struct devlink_dpipe_table *table; - int err = 0; - - mutex_lock(&devlink->lock); - table = devlink_dpipe_table_find(&devlink->dpipe_table_list, - table_name); - if (!table) { - err = -EINVAL; - goto out; - } - table->resource_id = resource_id; - table->resource_units = resource_units; - table->resource_valid = true; -out: - mutex_unlock(&devlink->lock); - return err; -} -EXPORT_SYMBOL_GPL(devlink_dpipe_table_resource_set); - -/** - * devlink_resource_occ_get_register - register occupancy getter - * - * @devlink: devlink - * @resource_id: resource id - * @occ_get: occupancy getter callback - * @occ_get_priv: occupancy getter callback priv - */ -void devlink_resource_occ_get_register(struct devlink *devlink, - u64 resource_id, - devlink_resource_occ_get_t *occ_get, - void *occ_get_priv) -{ - struct devlink_resource *resource; - - mutex_lock(&devlink->lock); - resource = devlink_resource_find(devlink, NULL, resource_id); - if (WARN_ON(!resource)) - goto out; - WARN_ON(resource->occ_get); - - resource->occ_get = occ_get; - resource->occ_get_priv = occ_get_priv; -out: - mutex_unlock(&devlink->lock); -} -EXPORT_SYMBOL_GPL(devlink_resource_occ_get_register); - -/** - * devlink_resource_occ_get_unregister - unregister occupancy getter - * - * @devlink: devlink - * @resource_id: resource id - */ -void devlink_resource_occ_get_unregister(struct devlink *devlink, - u64 resource_id) -{ - struct devlink_resource *resource; - - mutex_lock(&devlink->lock); - resource = devlink_resource_find(devlink, NULL, resource_id); - if (WARN_ON(!resource)) - goto out; - WARN_ON(!resource->occ_get); - - resource->occ_get = NULL; - resource->occ_get_priv = NULL; -out: - mutex_unlock(&devlink->lock); -} -EXPORT_SYMBOL_GPL(devlink_resource_occ_get_unregister); - -/** - * devlink_params_register - register configuration parameters - * - * @devlink: devlink - * @params: configuration parameters array - * @params_count: number of parameters provided - * - * Register the configuration parameters supported by the driver. - */ -int devlink_params_register(struct devlink *devlink, - const struct devlink_param *params, - size_t params_count) -{ - const struct devlink_param *param = params; - int i; - int err; - - mutex_lock(&devlink->lock); - for (i = 0; i < params_count; i++, param++) { - if (!param || !param->name || !param->supported_cmodes) { - err = -EINVAL; - goto rollback; - } - if (param->generic) { - err = devlink_param_generic_verify(param); - if (err) - goto rollback; - } else { - err = devlink_param_driver_verify(param); - if (err) - goto rollback; - } - err = devlink_param_register_one(devlink, param); - if (err) - goto rollback; - } - - mutex_unlock(&devlink->lock); - return 0; - -rollback: - if (!i) - goto unlock; - for (param--; i > 0; i--, param--) - devlink_param_unregister_one(devlink, param); -unlock: - mutex_unlock(&devlink->lock); - return err; -} -EXPORT_SYMBOL_GPL(devlink_params_register); - -/** - * devlink_params_unregister - unregister configuration parameters - * @devlink: devlink - * @params: configuration parameters to unregister - * @params_count: number of parameters provided - */ -void devlink_params_unregister(struct devlink *devlink, - const struct devlink_param *params, - size_t params_count) -{ - const struct devlink_param *param = params; - int i; - - mutex_lock(&devlink->lock); - for (i = 0; i < params_count; i++, param++) - devlink_param_unregister_one(devlink, param); - mutex_unlock(&devlink->lock); -} -EXPORT_SYMBOL_GPL(devlink_params_unregister); - -/** - * devlink_param_driverinit_value_get - get configuration parameter - * value for driver initializing - * - * @devlink: devlink - * @param_id: parameter ID - * @init_val: value of parameter in driverinit configuration mode - * - * This function should be used by the driver to get driverinit - * configuration for initialization after reload command. - */ -int devlink_param_driverinit_value_get(struct devlink *devlink, u32 param_id, - union devlink_param_value *init_val) -{ - struct devlink_param_item *param_item; - - if (!devlink->ops || !devlink->ops->reload) - return -EOPNOTSUPP; - - param_item = devlink_param_find_by_id(&devlink->param_list, param_id); - if (!param_item) - return -EINVAL; - - if (!param_item->driverinit_value_valid || - !devlink_param_cmode_is_supported(param_item->param, - DEVLINK_PARAM_CMODE_DRIVERINIT)) - return -EOPNOTSUPP; - - if (param_item->param->type == DEVLINK_PARAM_TYPE_STRING) - strcpy(init_val->vstr, param_item->driverinit_value.vstr); - else - *init_val = param_item->driverinit_value; - - return 0; -} -EXPORT_SYMBOL_GPL(devlink_param_driverinit_value_get); - -/** - * devlink_param_driverinit_value_set - set value of configuration - * parameter for driverinit - * configuration mode - * - * @devlink: devlink - * @param_id: parameter ID - * @init_val: value of parameter to set for driverinit configuration mode - * - * This function should be used by the driver to set driverinit - * configuration mode default value. - */ -int devlink_param_driverinit_value_set(struct devlink *devlink, u32 param_id, - union devlink_param_value init_val) -{ - struct devlink_param_item *param_item; - - param_item = devlink_param_find_by_id(&devlink->param_list, param_id); - if (!param_item) - return -EINVAL; - - if (!devlink_param_cmode_is_supported(param_item->param, - DEVLINK_PARAM_CMODE_DRIVERINIT)) - return -EOPNOTSUPP; - - if (param_item->param->type == DEVLINK_PARAM_TYPE_STRING) - strcpy(param_item->driverinit_value.vstr, init_val.vstr); - else - param_item->driverinit_value = init_val; - param_item->driverinit_value_valid = true; - - devlink_param_notify(devlink, param_item, DEVLINK_CMD_PARAM_NEW); - return 0; -} -EXPORT_SYMBOL_GPL(devlink_param_driverinit_value_set); - -/** - * devlink_param_value_changed - notify devlink on a parameter's value - * change. Should be called by the driver - * right after the change. - * - * @devlink: devlink - * @param_id: parameter ID - * - * This function should be used by the driver to notify devlink on value - * change, excluding driverinit configuration mode. - * For driverinit configuration mode driver should use the function - * devlink_param_driverinit_value_set() instead. - */ -void devlink_param_value_changed(struct devlink *devlink, u32 param_id) -{ - struct devlink_param_item *param_item; - - param_item = devlink_param_find_by_id(&devlink->param_list, param_id); - WARN_ON(!param_item); - - devlink_param_notify(devlink, param_item, DEVLINK_CMD_PARAM_NEW); -} -EXPORT_SYMBOL_GPL(devlink_param_value_changed); - -/** - * devlink_param_value_str_fill - Safely fill-up the string preventing - * from overflow of the preallocated buffer - * - * @dst_val: destination devlink_param_value - * @src: source buffer - */ -void devlink_param_value_str_fill(union devlink_param_value *dst_val, - const char *src) -{ - size_t len; - - len = strlcpy(dst_val->vstr, src, __DEVLINK_PARAM_MAX_STRING_VALUE); - WARN_ON(len >= __DEVLINK_PARAM_MAX_STRING_VALUE); -} -EXPORT_SYMBOL_GPL(devlink_param_value_str_fill); - -/** - * devlink_region_create - create a new address region - * - * @devlink: devlink - * @region_name: region name - * @region_max_snapshots: Maximum supported number of snapshots for region - * @region_size: size of region - */ -struct devlink_region *devlink_region_create(struct devlink *devlink, - const char *region_name, - u32 region_max_snapshots, - u64 region_size) -{ - struct devlink_region *region; - int err = 0; - - mutex_lock(&devlink->lock); - - if (devlink_region_get_by_name(devlink, region_name)) { - err = -EEXIST; - goto unlock; - } - - region = kzalloc(sizeof(*region), GFP_KERNEL); - if (!region) { - err = -ENOMEM; - goto unlock; - } - - region->devlink = devlink; - region->max_snapshots = region_max_snapshots; - region->name = region_name; - region->size = region_size; - INIT_LIST_HEAD(®ion->snapshot_list); - list_add_tail(®ion->list, &devlink->region_list); - devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_NEW); - - mutex_unlock(&devlink->lock); - return region; - -unlock: - mutex_unlock(&devlink->lock); - return ERR_PTR(err); -} -EXPORT_SYMBOL_GPL(devlink_region_create); - -/** - * devlink_region_destroy - destroy address region - * - * @region: devlink region to destroy - */ -void devlink_region_destroy(struct devlink_region *region) -{ - struct devlink *devlink = region->devlink; - struct devlink_snapshot *snapshot, *ts; - - mutex_lock(&devlink->lock); - - /* Free all snapshots of region */ - list_for_each_entry_safe(snapshot, ts, ®ion->snapshot_list, list) - devlink_region_snapshot_del(snapshot); - - list_del(®ion->list); - - devlink_nl_region_notify(region, NULL, DEVLINK_CMD_REGION_DEL); - mutex_unlock(&devlink->lock); - kfree(region); -} -EXPORT_SYMBOL_GPL(devlink_region_destroy); - -/** - * devlink_region_shapshot_id_get - get snapshot ID - * - * This callback should be called when adding a new snapshot, - * Driver should use the same id for multiple snapshots taken - * on multiple regions at the same time/by the same trigger. - * - * @devlink: devlink - */ -u32 devlink_region_shapshot_id_get(struct devlink *devlink) -{ - u32 id; - - mutex_lock(&devlink->lock); - id = ++devlink->snapshot_id; - mutex_unlock(&devlink->lock); - - return id; -} -EXPORT_SYMBOL_GPL(devlink_region_shapshot_id_get); - -/** - * devlink_region_snapshot_create - create a new snapshot - * This will add a new snapshot of a region. The snapshot - * will be stored on the region struct and can be accessed - * from devlink. This is useful for future analyses of snapshots. - * Multiple snapshots can be created on a region. - * The @snapshot_id should be obtained using the getter function. - * - * @devlink_region: devlink region of the snapshot - * @data_len: size of snapshot data - * @data: snapshot data - * @snapshot_id: snapshot id to be created - * @data_destructor: pointer to destructor function to free data - */ -int devlink_region_snapshot_create(struct devlink_region *region, u64 data_len, - u8 *data, u32 snapshot_id, - devlink_snapshot_data_dest_t *data_destructor) -{ - struct devlink *devlink = region->devlink; - struct devlink_snapshot *snapshot; - int err; - - mutex_lock(&devlink->lock); - - /* check if region can hold one more snapshot */ - if (region->cur_snapshots == region->max_snapshots) { - err = -ENOMEM; - goto unlock; - } - - if (devlink_region_snapshot_get_by_id(region, snapshot_id)) { - err = -EEXIST; - goto unlock; - } - - snapshot = kzalloc(sizeof(*snapshot), GFP_KERNEL); - if (!snapshot) { - err = -ENOMEM; - goto unlock; - } - - snapshot->id = snapshot_id; - snapshot->region = region; - snapshot->data = data; - snapshot->data_len = data_len; - snapshot->data_destructor = data_destructor; - - list_add_tail(&snapshot->list, ®ion->snapshot_list); - - region->cur_snapshots++; - - devlink_nl_region_notify(region, snapshot, DEVLINK_CMD_REGION_NEW); - mutex_unlock(&devlink->lock); - return 0; - -unlock: - mutex_unlock(&devlink->lock); - return err; -} -EXPORT_SYMBOL_GPL(devlink_region_snapshot_create); - -static int __init devlink_module_init(void) -{ - return genl_register_family(&devlink_nl_family); -} - -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); |