707 lines
18 KiB
C
707 lines
18 KiB
C
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// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright 2020 Linaro Limited
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*
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* Author: Daniel Lezcano <daniel.lezcano@linaro.org>
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*
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* Generic netlink for thermal management framework
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <net/genetlink.h>
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#include <uapi/linux/thermal.h>
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#include "thermal_core.h"
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static const struct genl_multicast_group thermal_genl_mcgrps[] = {
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{ .name = THERMAL_GENL_SAMPLING_GROUP_NAME, },
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{ .name = THERMAL_GENL_EVENT_GROUP_NAME, },
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};
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static const struct nla_policy thermal_genl_policy[THERMAL_GENL_ATTR_MAX + 1] = {
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/* Thermal zone */
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[THERMAL_GENL_ATTR_TZ] = { .type = NLA_NESTED },
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[THERMAL_GENL_ATTR_TZ_ID] = { .type = NLA_U32 },
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[THERMAL_GENL_ATTR_TZ_TEMP] = { .type = NLA_U32 },
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[THERMAL_GENL_ATTR_TZ_TRIP] = { .type = NLA_NESTED },
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[THERMAL_GENL_ATTR_TZ_TRIP_ID] = { .type = NLA_U32 },
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[THERMAL_GENL_ATTR_TZ_TRIP_TEMP] = { .type = NLA_U32 },
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[THERMAL_GENL_ATTR_TZ_TRIP_TYPE] = { .type = NLA_U32 },
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[THERMAL_GENL_ATTR_TZ_TRIP_HYST] = { .type = NLA_U32 },
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[THERMAL_GENL_ATTR_TZ_MODE] = { .type = NLA_U32 },
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[THERMAL_GENL_ATTR_TZ_CDEV_WEIGHT] = { .type = NLA_U32 },
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[THERMAL_GENL_ATTR_TZ_NAME] = { .type = NLA_STRING,
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.len = THERMAL_NAME_LENGTH },
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/* Governor(s) */
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[THERMAL_GENL_ATTR_TZ_GOV] = { .type = NLA_NESTED },
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[THERMAL_GENL_ATTR_TZ_GOV_NAME] = { .type = NLA_STRING,
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.len = THERMAL_NAME_LENGTH },
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/* Cooling devices */
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[THERMAL_GENL_ATTR_CDEV] = { .type = NLA_NESTED },
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[THERMAL_GENL_ATTR_CDEV_ID] = { .type = NLA_U32 },
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[THERMAL_GENL_ATTR_CDEV_CUR_STATE] = { .type = NLA_U32 },
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[THERMAL_GENL_ATTR_CDEV_MAX_STATE] = { .type = NLA_U32 },
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[THERMAL_GENL_ATTR_CDEV_NAME] = { .type = NLA_STRING,
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.len = THERMAL_NAME_LENGTH },
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/* CPU capabilities */
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[THERMAL_GENL_ATTR_CPU_CAPABILITY] = { .type = NLA_NESTED },
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[THERMAL_GENL_ATTR_CPU_CAPABILITY_ID] = { .type = NLA_U32 },
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[THERMAL_GENL_ATTR_CPU_CAPABILITY_PERFORMANCE] = { .type = NLA_U32 },
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[THERMAL_GENL_ATTR_CPU_CAPABILITY_EFFICIENCY] = { .type = NLA_U32 },
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};
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struct param {
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struct nlattr **attrs;
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struct sk_buff *msg;
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const char *name;
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int tz_id;
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int cdev_id;
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int trip_id;
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int trip_temp;
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int trip_type;
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int trip_hyst;
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int temp;
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int cdev_state;
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int cdev_max_state;
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struct thermal_genl_cpu_caps *cpu_capabilities;
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int cpu_capabilities_count;
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};
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typedef int (*cb_t)(struct param *);
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static struct genl_family thermal_gnl_family;
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/************************** Sampling encoding *******************************/
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int thermal_genl_sampling_temp(int id, int temp)
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{
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struct sk_buff *skb;
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void *hdr;
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skb = genlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
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if (!skb)
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return -ENOMEM;
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hdr = genlmsg_put(skb, 0, 0, &thermal_gnl_family, 0,
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THERMAL_GENL_SAMPLING_TEMP);
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if (!hdr)
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goto out_free;
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if (nla_put_u32(skb, THERMAL_GENL_ATTR_TZ_ID, id))
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goto out_cancel;
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if (nla_put_u32(skb, THERMAL_GENL_ATTR_TZ_TEMP, temp))
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goto out_cancel;
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genlmsg_end(skb, hdr);
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genlmsg_multicast(&thermal_gnl_family, skb, 0, 0, GFP_KERNEL);
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return 0;
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out_cancel:
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genlmsg_cancel(skb, hdr);
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out_free:
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nlmsg_free(skb);
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return -EMSGSIZE;
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}
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/**************************** Event encoding *********************************/
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static int thermal_genl_event_tz_create(struct param *p)
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{
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if (nla_put_u32(p->msg, THERMAL_GENL_ATTR_TZ_ID, p->tz_id) ||
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nla_put_string(p->msg, THERMAL_GENL_ATTR_TZ_NAME, p->name))
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return -EMSGSIZE;
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return 0;
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}
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static int thermal_genl_event_tz(struct param *p)
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{
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if (nla_put_u32(p->msg, THERMAL_GENL_ATTR_TZ_ID, p->tz_id))
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return -EMSGSIZE;
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return 0;
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}
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static int thermal_genl_event_tz_trip_up(struct param *p)
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{
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if (nla_put_u32(p->msg, THERMAL_GENL_ATTR_TZ_ID, p->tz_id) ||
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nla_put_u32(p->msg, THERMAL_GENL_ATTR_TZ_TRIP_ID, p->trip_id) ||
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nla_put_u32(p->msg, THERMAL_GENL_ATTR_TZ_TEMP, p->temp))
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return -EMSGSIZE;
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return 0;
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}
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static int thermal_genl_event_tz_trip_add(struct param *p)
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{
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if (nla_put_u32(p->msg, THERMAL_GENL_ATTR_TZ_ID, p->tz_id) ||
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nla_put_u32(p->msg, THERMAL_GENL_ATTR_TZ_TRIP_ID, p->trip_id) ||
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nla_put_u32(p->msg, THERMAL_GENL_ATTR_TZ_TRIP_TYPE, p->trip_type) ||
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nla_put_u32(p->msg, THERMAL_GENL_ATTR_TZ_TRIP_TEMP, p->trip_temp) ||
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nla_put_u32(p->msg, THERMAL_GENL_ATTR_TZ_TRIP_HYST, p->trip_hyst))
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return -EMSGSIZE;
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return 0;
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}
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static int thermal_genl_event_tz_trip_delete(struct param *p)
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{
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if (nla_put_u32(p->msg, THERMAL_GENL_ATTR_TZ_ID, p->tz_id) ||
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nla_put_u32(p->msg, THERMAL_GENL_ATTR_TZ_TRIP_ID, p->trip_id))
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return -EMSGSIZE;
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return 0;
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}
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static int thermal_genl_event_cdev_add(struct param *p)
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{
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if (nla_put_string(p->msg, THERMAL_GENL_ATTR_CDEV_NAME,
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p->name) ||
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nla_put_u32(p->msg, THERMAL_GENL_ATTR_CDEV_ID,
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p->cdev_id) ||
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nla_put_u32(p->msg, THERMAL_GENL_ATTR_CDEV_MAX_STATE,
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p->cdev_max_state))
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return -EMSGSIZE;
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return 0;
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}
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static int thermal_genl_event_cdev_delete(struct param *p)
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{
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if (nla_put_u32(p->msg, THERMAL_GENL_ATTR_CDEV_ID, p->cdev_id))
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return -EMSGSIZE;
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return 0;
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}
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static int thermal_genl_event_cdev_state_update(struct param *p)
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{
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if (nla_put_u32(p->msg, THERMAL_GENL_ATTR_CDEV_ID,
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p->cdev_id) ||
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nla_put_u32(p->msg, THERMAL_GENL_ATTR_CDEV_CUR_STATE,
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p->cdev_state))
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return -EMSGSIZE;
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return 0;
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}
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static int thermal_genl_event_gov_change(struct param *p)
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{
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if (nla_put_u32(p->msg, THERMAL_GENL_ATTR_TZ_ID, p->tz_id) ||
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nla_put_string(p->msg, THERMAL_GENL_ATTR_GOV_NAME, p->name))
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return -EMSGSIZE;
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return 0;
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}
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static int thermal_genl_event_cpu_capability_change(struct param *p)
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{
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struct thermal_genl_cpu_caps *cpu_cap = p->cpu_capabilities;
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struct sk_buff *msg = p->msg;
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struct nlattr *start_cap;
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int i;
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start_cap = nla_nest_start(msg, THERMAL_GENL_ATTR_CPU_CAPABILITY);
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if (!start_cap)
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return -EMSGSIZE;
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for (i = 0; i < p->cpu_capabilities_count; ++i) {
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if (nla_put_u32(msg, THERMAL_GENL_ATTR_CPU_CAPABILITY_ID,
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cpu_cap->cpu))
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goto out_cancel_nest;
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if (nla_put_u32(msg, THERMAL_GENL_ATTR_CPU_CAPABILITY_PERFORMANCE,
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cpu_cap->performance))
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goto out_cancel_nest;
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if (nla_put_u32(msg, THERMAL_GENL_ATTR_CPU_CAPABILITY_EFFICIENCY,
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cpu_cap->efficiency))
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goto out_cancel_nest;
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++cpu_cap;
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}
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nla_nest_end(msg, start_cap);
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return 0;
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out_cancel_nest:
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nla_nest_cancel(msg, start_cap);
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return -EMSGSIZE;
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}
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int thermal_genl_event_tz_delete(struct param *p)
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__attribute__((alias("thermal_genl_event_tz")));
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int thermal_genl_event_tz_enable(struct param *p)
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__attribute__((alias("thermal_genl_event_tz")));
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int thermal_genl_event_tz_disable(struct param *p)
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__attribute__((alias("thermal_genl_event_tz")));
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int thermal_genl_event_tz_trip_down(struct param *p)
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__attribute__((alias("thermal_genl_event_tz_trip_up")));
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int thermal_genl_event_tz_trip_change(struct param *p)
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__attribute__((alias("thermal_genl_event_tz_trip_add")));
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static cb_t event_cb[] = {
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[THERMAL_GENL_EVENT_TZ_CREATE] = thermal_genl_event_tz_create,
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[THERMAL_GENL_EVENT_TZ_DELETE] = thermal_genl_event_tz_delete,
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[THERMAL_GENL_EVENT_TZ_ENABLE] = thermal_genl_event_tz_enable,
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[THERMAL_GENL_EVENT_TZ_DISABLE] = thermal_genl_event_tz_disable,
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[THERMAL_GENL_EVENT_TZ_TRIP_UP] = thermal_genl_event_tz_trip_up,
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[THERMAL_GENL_EVENT_TZ_TRIP_DOWN] = thermal_genl_event_tz_trip_down,
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[THERMAL_GENL_EVENT_TZ_TRIP_CHANGE] = thermal_genl_event_tz_trip_change,
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[THERMAL_GENL_EVENT_TZ_TRIP_ADD] = thermal_genl_event_tz_trip_add,
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[THERMAL_GENL_EVENT_TZ_TRIP_DELETE] = thermal_genl_event_tz_trip_delete,
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[THERMAL_GENL_EVENT_CDEV_ADD] = thermal_genl_event_cdev_add,
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[THERMAL_GENL_EVENT_CDEV_DELETE] = thermal_genl_event_cdev_delete,
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[THERMAL_GENL_EVENT_CDEV_STATE_UPDATE] = thermal_genl_event_cdev_state_update,
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[THERMAL_GENL_EVENT_TZ_GOV_CHANGE] = thermal_genl_event_gov_change,
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[THERMAL_GENL_EVENT_CPU_CAPABILITY_CHANGE] = thermal_genl_event_cpu_capability_change,
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};
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/*
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* Generic netlink event encoding
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*/
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static int thermal_genl_send_event(enum thermal_genl_event event,
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struct param *p)
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{
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struct sk_buff *msg;
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int ret = -EMSGSIZE;
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void *hdr;
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msg = genlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
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if (!msg)
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return -ENOMEM;
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p->msg = msg;
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hdr = genlmsg_put(msg, 0, 0, &thermal_gnl_family, 0, event);
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if (!hdr)
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goto out_free_msg;
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ret = event_cb[event](p);
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if (ret)
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goto out_cancel_msg;
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genlmsg_end(msg, hdr);
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genlmsg_multicast(&thermal_gnl_family, msg, 0, 1, GFP_KERNEL);
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return 0;
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out_cancel_msg:
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genlmsg_cancel(msg, hdr);
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out_free_msg:
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nlmsg_free(msg);
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return ret;
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}
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int thermal_notify_tz_create(int tz_id, const char *name)
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{
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struct param p = { .tz_id = tz_id, .name = name };
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return thermal_genl_send_event(THERMAL_GENL_EVENT_TZ_CREATE, &p);
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}
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int thermal_notify_tz_delete(int tz_id)
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{
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struct param p = { .tz_id = tz_id };
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return thermal_genl_send_event(THERMAL_GENL_EVENT_TZ_DELETE, &p);
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}
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int thermal_notify_tz_enable(int tz_id)
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{
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struct param p = { .tz_id = tz_id };
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return thermal_genl_send_event(THERMAL_GENL_EVENT_TZ_ENABLE, &p);
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}
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int thermal_notify_tz_disable(int tz_id)
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{
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struct param p = { .tz_id = tz_id };
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return thermal_genl_send_event(THERMAL_GENL_EVENT_TZ_DISABLE, &p);
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}
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int thermal_notify_tz_trip_down(int tz_id, int trip_id, int temp)
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{
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|
|
struct param p = { .tz_id = tz_id, .trip_id = trip_id, .temp = temp };
|
||
|
|
|
||
|
|
return thermal_genl_send_event(THERMAL_GENL_EVENT_TZ_TRIP_DOWN, &p);
|
||
|
|
}
|
||
|
|
|
||
|
|
int thermal_notify_tz_trip_up(int tz_id, int trip_id, int temp)
|
||
|
|
{
|
||
|
|
struct param p = { .tz_id = tz_id, .trip_id = trip_id, .temp = temp };
|
||
|
|
|
||
|
|
return thermal_genl_send_event(THERMAL_GENL_EVENT_TZ_TRIP_UP, &p);
|
||
|
|
}
|
||
|
|
|
||
|
|
int thermal_notify_tz_trip_add(int tz_id, int trip_id, int trip_type,
|
||
|
|
int trip_temp, int trip_hyst)
|
||
|
|
{
|
||
|
|
struct param p = { .tz_id = tz_id, .trip_id = trip_id,
|
||
|
|
.trip_type = trip_type, .trip_temp = trip_temp,
|
||
|
|
.trip_hyst = trip_hyst };
|
||
|
|
|
||
|
|
return thermal_genl_send_event(THERMAL_GENL_EVENT_TZ_TRIP_ADD, &p);
|
||
|
|
}
|
||
|
|
|
||
|
|
int thermal_notify_tz_trip_delete(int tz_id, int trip_id)
|
||
|
|
{
|
||
|
|
struct param p = { .tz_id = tz_id, .trip_id = trip_id };
|
||
|
|
|
||
|
|
return thermal_genl_send_event(THERMAL_GENL_EVENT_TZ_TRIP_DELETE, &p);
|
||
|
|
}
|
||
|
|
|
||
|
|
int thermal_notify_tz_trip_change(int tz_id, int trip_id, int trip_type,
|
||
|
|
int trip_temp, int trip_hyst)
|
||
|
|
{
|
||
|
|
struct param p = { .tz_id = tz_id, .trip_id = trip_id,
|
||
|
|
.trip_type = trip_type, .trip_temp = trip_temp,
|
||
|
|
.trip_hyst = trip_hyst };
|
||
|
|
|
||
|
|
return thermal_genl_send_event(THERMAL_GENL_EVENT_TZ_TRIP_CHANGE, &p);
|
||
|
|
}
|
||
|
|
|
||
|
|
int thermal_notify_cdev_state_update(int cdev_id, int cdev_state)
|
||
|
|
{
|
||
|
|
struct param p = { .cdev_id = cdev_id, .cdev_state = cdev_state };
|
||
|
|
|
||
|
|
return thermal_genl_send_event(THERMAL_GENL_EVENT_CDEV_STATE_UPDATE, &p);
|
||
|
|
}
|
||
|
|
|
||
|
|
int thermal_notify_cdev_add(int cdev_id, const char *name, int cdev_max_state)
|
||
|
|
{
|
||
|
|
struct param p = { .cdev_id = cdev_id, .name = name,
|
||
|
|
.cdev_max_state = cdev_max_state };
|
||
|
|
|
||
|
|
return thermal_genl_send_event(THERMAL_GENL_EVENT_CDEV_ADD, &p);
|
||
|
|
}
|
||
|
|
|
||
|
|
int thermal_notify_cdev_delete(int cdev_id)
|
||
|
|
{
|
||
|
|
struct param p = { .cdev_id = cdev_id };
|
||
|
|
|
||
|
|
return thermal_genl_send_event(THERMAL_GENL_EVENT_CDEV_DELETE, &p);
|
||
|
|
}
|
||
|
|
|
||
|
|
int thermal_notify_tz_gov_change(int tz_id, const char *name)
|
||
|
|
{
|
||
|
|
struct param p = { .tz_id = tz_id, .name = name };
|
||
|
|
|
||
|
|
return thermal_genl_send_event(THERMAL_GENL_EVENT_TZ_GOV_CHANGE, &p);
|
||
|
|
}
|
||
|
|
|
||
|
|
int thermal_genl_cpu_capability_event(int count,
|
||
|
|
struct thermal_genl_cpu_caps *caps)
|
||
|
|
{
|
||
|
|
struct param p = { .cpu_capabilities_count = count, .cpu_capabilities = caps };
|
||
|
|
|
||
|
|
return thermal_genl_send_event(THERMAL_GENL_EVENT_CPU_CAPABILITY_CHANGE, &p);
|
||
|
|
}
|
||
|
|
EXPORT_SYMBOL_GPL(thermal_genl_cpu_capability_event);
|
||
|
|
|
||
|
|
/*************************** Command encoding ********************************/
|
||
|
|
|
||
|
|
static int __thermal_genl_cmd_tz_get_id(struct thermal_zone_device *tz,
|
||
|
|
void *data)
|
||
|
|
{
|
||
|
|
struct sk_buff *msg = data;
|
||
|
|
|
||
|
|
if (nla_put_u32(msg, THERMAL_GENL_ATTR_TZ_ID, tz->id) ||
|
||
|
|
nla_put_string(msg, THERMAL_GENL_ATTR_TZ_NAME, tz->type))
|
||
|
|
return -EMSGSIZE;
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int thermal_genl_cmd_tz_get_id(struct param *p)
|
||
|
|
{
|
||
|
|
struct sk_buff *msg = p->msg;
|
||
|
|
struct nlattr *start_tz;
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
start_tz = nla_nest_start(msg, THERMAL_GENL_ATTR_TZ);
|
||
|
|
if (!start_tz)
|
||
|
|
return -EMSGSIZE;
|
||
|
|
|
||
|
|
ret = for_each_thermal_zone(__thermal_genl_cmd_tz_get_id, msg);
|
||
|
|
if (ret)
|
||
|
|
goto out_cancel_nest;
|
||
|
|
|
||
|
|
nla_nest_end(msg, start_tz);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
out_cancel_nest:
|
||
|
|
nla_nest_cancel(msg, start_tz);
|
||
|
|
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int thermal_genl_cmd_tz_get_trip(struct param *p)
|
||
|
|
{
|
||
|
|
struct sk_buff *msg = p->msg;
|
||
|
|
struct thermal_zone_device *tz;
|
||
|
|
struct nlattr *start_trip;
|
||
|
|
struct thermal_trip trip;
|
||
|
|
int ret, i, id;
|
||
|
|
|
||
|
|
if (!p->attrs[THERMAL_GENL_ATTR_TZ_ID])
|
||
|
|
return -EINVAL;
|
||
|
|
|
||
|
|
id = nla_get_u32(p->attrs[THERMAL_GENL_ATTR_TZ_ID]);
|
||
|
|
|
||
|
|
tz = thermal_zone_get_by_id(id);
|
||
|
|
if (!tz)
|
||
|
|
return -EINVAL;
|
||
|
|
|
||
|
|
start_trip = nla_nest_start(msg, THERMAL_GENL_ATTR_TZ_TRIP);
|
||
|
|
if (!start_trip)
|
||
|
|
return -EMSGSIZE;
|
||
|
|
|
||
|
|
mutex_lock(&tz->lock);
|
||
|
|
|
||
|
|
for (i = 0; i < tz->num_trips; i++) {
|
||
|
|
|
||
|
|
ret = __thermal_zone_get_trip(tz, i, &trip);
|
||
|
|
if (ret)
|
||
|
|
goto out_cancel_nest;
|
||
|
|
|
||
|
|
if (nla_put_u32(msg, THERMAL_GENL_ATTR_TZ_TRIP_ID, i) ||
|
||
|
|
nla_put_u32(msg, THERMAL_GENL_ATTR_TZ_TRIP_TYPE, trip.type) ||
|
||
|
|
nla_put_u32(msg, THERMAL_GENL_ATTR_TZ_TRIP_TEMP, trip.temperature) ||
|
||
|
|
nla_put_u32(msg, THERMAL_GENL_ATTR_TZ_TRIP_HYST, trip.hysteresis))
|
||
|
|
goto out_cancel_nest;
|
||
|
|
}
|
||
|
|
|
||
|
|
mutex_unlock(&tz->lock);
|
||
|
|
|
||
|
|
nla_nest_end(msg, start_trip);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
out_cancel_nest:
|
||
|
|
mutex_unlock(&tz->lock);
|
||
|
|
|
||
|
|
return -EMSGSIZE;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int thermal_genl_cmd_tz_get_temp(struct param *p)
|
||
|
|
{
|
||
|
|
struct sk_buff *msg = p->msg;
|
||
|
|
struct thermal_zone_device *tz;
|
||
|
|
int temp, ret, id;
|
||
|
|
|
||
|
|
if (!p->attrs[THERMAL_GENL_ATTR_TZ_ID])
|
||
|
|
return -EINVAL;
|
||
|
|
|
||
|
|
id = nla_get_u32(p->attrs[THERMAL_GENL_ATTR_TZ_ID]);
|
||
|
|
|
||
|
|
tz = thermal_zone_get_by_id(id);
|
||
|
|
if (!tz)
|
||
|
|
return -EINVAL;
|
||
|
|
|
||
|
|
ret = thermal_zone_get_temp(tz, &temp);
|
||
|
|
if (ret)
|
||
|
|
return ret;
|
||
|
|
|
||
|
|
if (nla_put_u32(msg, THERMAL_GENL_ATTR_TZ_ID, id) ||
|
||
|
|
nla_put_u32(msg, THERMAL_GENL_ATTR_TZ_TEMP, temp))
|
||
|
|
return -EMSGSIZE;
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int thermal_genl_cmd_tz_get_gov(struct param *p)
|
||
|
|
{
|
||
|
|
struct sk_buff *msg = p->msg;
|
||
|
|
struct thermal_zone_device *tz;
|
||
|
|
int id, ret = 0;
|
||
|
|
|
||
|
|
if (!p->attrs[THERMAL_GENL_ATTR_TZ_ID])
|
||
|
|
return -EINVAL;
|
||
|
|
|
||
|
|
id = nla_get_u32(p->attrs[THERMAL_GENL_ATTR_TZ_ID]);
|
||
|
|
|
||
|
|
tz = thermal_zone_get_by_id(id);
|
||
|
|
if (!tz)
|
||
|
|
return -EINVAL;
|
||
|
|
|
||
|
|
mutex_lock(&tz->lock);
|
||
|
|
|
||
|
|
if (nla_put_u32(msg, THERMAL_GENL_ATTR_TZ_ID, id) ||
|
||
|
|
nla_put_string(msg, THERMAL_GENL_ATTR_TZ_GOV_NAME,
|
||
|
|
tz->governor->name))
|
||
|
|
ret = -EMSGSIZE;
|
||
|
|
|
||
|
|
mutex_unlock(&tz->lock);
|
||
|
|
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int __thermal_genl_cmd_cdev_get(struct thermal_cooling_device *cdev,
|
||
|
|
void *data)
|
||
|
|
{
|
||
|
|
struct sk_buff *msg = data;
|
||
|
|
|
||
|
|
if (nla_put_u32(msg, THERMAL_GENL_ATTR_CDEV_ID, cdev->id))
|
||
|
|
return -EMSGSIZE;
|
||
|
|
|
||
|
|
if (nla_put_string(msg, THERMAL_GENL_ATTR_CDEV_NAME, cdev->type))
|
||
|
|
return -EMSGSIZE;
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int thermal_genl_cmd_cdev_get(struct param *p)
|
||
|
|
{
|
||
|
|
struct sk_buff *msg = p->msg;
|
||
|
|
struct nlattr *start_cdev;
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
start_cdev = nla_nest_start(msg, THERMAL_GENL_ATTR_CDEV);
|
||
|
|
if (!start_cdev)
|
||
|
|
return -EMSGSIZE;
|
||
|
|
|
||
|
|
ret = for_each_thermal_cooling_device(__thermal_genl_cmd_cdev_get, msg);
|
||
|
|
if (ret)
|
||
|
|
goto out_cancel_nest;
|
||
|
|
|
||
|
|
nla_nest_end(msg, start_cdev);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
out_cancel_nest:
|
||
|
|
nla_nest_cancel(msg, start_cdev);
|
||
|
|
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
static cb_t cmd_cb[] = {
|
||
|
|
[THERMAL_GENL_CMD_TZ_GET_ID] = thermal_genl_cmd_tz_get_id,
|
||
|
|
[THERMAL_GENL_CMD_TZ_GET_TRIP] = thermal_genl_cmd_tz_get_trip,
|
||
|
|
[THERMAL_GENL_CMD_TZ_GET_TEMP] = thermal_genl_cmd_tz_get_temp,
|
||
|
|
[THERMAL_GENL_CMD_TZ_GET_GOV] = thermal_genl_cmd_tz_get_gov,
|
||
|
|
[THERMAL_GENL_CMD_CDEV_GET] = thermal_genl_cmd_cdev_get,
|
||
|
|
};
|
||
|
|
|
||
|
|
static int thermal_genl_cmd_dumpit(struct sk_buff *skb,
|
||
|
|
struct netlink_callback *cb)
|
||
|
|
{
|
||
|
|
struct param p = { .msg = skb };
|
||
|
|
const struct genl_dumpit_info *info = genl_dumpit_info(cb);
|
||
|
|
int cmd = info->op.cmd;
|
||
|
|
int ret;
|
||
|
|
void *hdr;
|
||
|
|
|
||
|
|
hdr = genlmsg_put(skb, 0, 0, &thermal_gnl_family, 0, cmd);
|
||
|
|
if (!hdr)
|
||
|
|
return -EMSGSIZE;
|
||
|
|
|
||
|
|
ret = cmd_cb[cmd](&p);
|
||
|
|
if (ret)
|
||
|
|
goto out_cancel_msg;
|
||
|
|
|
||
|
|
genlmsg_end(skb, hdr);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
out_cancel_msg:
|
||
|
|
genlmsg_cancel(skb, hdr);
|
||
|
|
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int thermal_genl_cmd_doit(struct sk_buff *skb,
|
||
|
|
struct genl_info *info)
|
||
|
|
{
|
||
|
|
struct param p = { .attrs = info->attrs };
|
||
|
|
struct sk_buff *msg;
|
||
|
|
void *hdr;
|
||
|
|
int cmd = info->genlhdr->cmd;
|
||
|
|
int ret = -EMSGSIZE;
|
||
|
|
|
||
|
|
msg = genlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
|
||
|
|
if (!msg)
|
||
|
|
return -ENOMEM;
|
||
|
|
p.msg = msg;
|
||
|
|
|
||
|
|
hdr = genlmsg_put_reply(msg, info, &thermal_gnl_family, 0, cmd);
|
||
|
|
if (!hdr)
|
||
|
|
goto out_free_msg;
|
||
|
|
|
||
|
|
ret = cmd_cb[cmd](&p);
|
||
|
|
if (ret)
|
||
|
|
goto out_cancel_msg;
|
||
|
|
|
||
|
|
genlmsg_end(msg, hdr);
|
||
|
|
|
||
|
|
return genlmsg_reply(msg, info);
|
||
|
|
|
||
|
|
out_cancel_msg:
|
||
|
|
genlmsg_cancel(msg, hdr);
|
||
|
|
out_free_msg:
|
||
|
|
nlmsg_free(msg);
|
||
|
|
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
static const struct genl_small_ops thermal_genl_ops[] = {
|
||
|
|
{
|
||
|
|
.cmd = THERMAL_GENL_CMD_TZ_GET_ID,
|
||
|
|
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
|
||
|
|
.dumpit = thermal_genl_cmd_dumpit,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
.cmd = THERMAL_GENL_CMD_TZ_GET_TRIP,
|
||
|
|
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
|
||
|
|
.doit = thermal_genl_cmd_doit,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
.cmd = THERMAL_GENL_CMD_TZ_GET_TEMP,
|
||
|
|
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
|
||
|
|
.doit = thermal_genl_cmd_doit,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
.cmd = THERMAL_GENL_CMD_TZ_GET_GOV,
|
||
|
|
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
|
||
|
|
.doit = thermal_genl_cmd_doit,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
.cmd = THERMAL_GENL_CMD_CDEV_GET,
|
||
|
|
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
|
||
|
|
.dumpit = thermal_genl_cmd_dumpit,
|
||
|
|
},
|
||
|
|
};
|
||
|
|
|
||
|
|
static struct genl_family thermal_gnl_family __ro_after_init = {
|
||
|
|
.hdrsize = 0,
|
||
|
|
.name = THERMAL_GENL_FAMILY_NAME,
|
||
|
|
.version = THERMAL_GENL_VERSION,
|
||
|
|
.maxattr = THERMAL_GENL_ATTR_MAX,
|
||
|
|
.policy = thermal_genl_policy,
|
||
|
|
.small_ops = thermal_genl_ops,
|
||
|
|
.n_small_ops = ARRAY_SIZE(thermal_genl_ops),
|
||
|
|
.resv_start_op = THERMAL_GENL_CMD_CDEV_GET + 1,
|
||
|
|
.mcgrps = thermal_genl_mcgrps,
|
||
|
|
.n_mcgrps = ARRAY_SIZE(thermal_genl_mcgrps),
|
||
|
|
};
|
||
|
|
|
||
|
|
int __init thermal_netlink_init(void)
|
||
|
|
{
|
||
|
|
return genl_register_family(&thermal_gnl_family);
|
||
|
|
}
|
||
|
|
|
||
|
|
void __init thermal_netlink_exit(void)
|
||
|
|
{
|
||
|
|
genl_unregister_family(&thermal_gnl_family);
|
||
|
|
}
|