| /* |
| * 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); |
| 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); |
| 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); |
| 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) |
| goto err_skb_send_alloc; |
| goto send_done; |
| } |
| return genlmsg_reply(skb, info); |
| |
| nla_put_failure: |
| err = -EMSGSIZE; |
| err_resource_put: |
| err_skb_send_alloc: |
| 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, |
| }, |
| }; |
| |
| 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) |
| { |
| 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: |
| if (nla_len(info->attrs[DEVLINK_ATTR_PARAM_VALUE_DATA]) > |
| DEVLINK_PARAM_MAX_STRING_VALUE) |
| return -EINVAL; |
| 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) { |
| 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, NULL); |
| 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; |
| |
| *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; |
| |
| 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_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); |
