From 1db64e8733f653814f041ffe1428524494ef6123 Mon Sep 17 00:00:00 2001 From: Eran Ben Elisha Date: Thu, 7 Feb 2019 11:36:32 +0200 Subject: devlink: Add devlink formatted message (fmsg) API Devlink fmsg is a mechanism to pass descriptors between drivers and devlink, in json-like format. The API allows the driver to add nested attributes such as object, object pair and value array, in addition to attributes such as name and value. Driver can use this API to fill the fmsg context in a format which will be translated by the devlink to the netlink message later. There is no memory allocation in advance (other than the initial list head), and it dynamically allocates messages descriptors and add them to the list on the fly. When it needs to send the data using SKBs to the netlink layer, it fragments the data between different SKBs. In order to do this fragmentation, it uses virtual nests attributes, to avoid actual nesting use which cannot be divided between different SKBs. Signed-off-by: Eran Ben Elisha Reviewed-by: Moshe Shemesh Acked-by: Jiri Pirko Signed-off-by: David S. Miller --- include/uapi/linux/devlink.h | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'include/uapi/linux') diff --git a/include/uapi/linux/devlink.h b/include/uapi/linux/devlink.h index 054b2d1a4537..076692209a9b 100644 --- a/include/uapi/linux/devlink.h +++ b/include/uapi/linux/devlink.h @@ -302,6 +302,14 @@ enum devlink_attr { DEVLINK_ATTR_SB_POOL_CELL_SIZE, /* u32 */ + DEVLINK_ATTR_FMSG, /* nested */ + DEVLINK_ATTR_FMSG_OBJ_NEST_START, /* flag */ + DEVLINK_ATTR_FMSG_PAIR_NEST_START, /* flag */ + DEVLINK_ATTR_FMSG_ARR_NEST_START, /* flag */ + DEVLINK_ATTR_FMSG_NEST_END, /* flag */ + DEVLINK_ATTR_FMSG_OBJ_NAME, /* string */ + DEVLINK_ATTR_FMSG_OBJ_VALUE_TYPE, /* u8 */ + DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA, /* dynamic */ /* add new attributes above here, update the policy in devlink.c */ __DEVLINK_ATTR_MAX, -- cgit v1.2.3 From 7afe335a8bede4e2839b0e0fa36ef629fe4a0206 Mon Sep 17 00:00:00 2001 From: Eran Ben Elisha Date: Thu, 7 Feb 2019 11:36:35 +0200 Subject: devlink: Add health get command Add devlink health get command to provide reporter/s data for user space. Add the ability to get data per reporter or dump data from all available reporters. Signed-off-by: Eran Ben Elisha Reviewed-by: Moshe Shemesh Acked-by: Jiri Pirko Signed-off-by: David S. Miller --- include/uapi/linux/devlink.h | 11 ++++ net/core/devlink.c | 149 +++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 160 insertions(+) (limited to 'include/uapi/linux') diff --git a/include/uapi/linux/devlink.h b/include/uapi/linux/devlink.h index 076692209a9b..d8f20d6ce139 100644 --- a/include/uapi/linux/devlink.h +++ b/include/uapi/linux/devlink.h @@ -96,6 +96,8 @@ enum devlink_command { DEVLINK_CMD_INFO_GET, /* can dump */ + DEVLINK_CMD_HEALTH_REPORTER_GET, + /* add new commands above here */ __DEVLINK_CMD_MAX, DEVLINK_CMD_MAX = __DEVLINK_CMD_MAX - 1 @@ -310,6 +312,15 @@ enum devlink_attr { DEVLINK_ATTR_FMSG_OBJ_NAME, /* string */ DEVLINK_ATTR_FMSG_OBJ_VALUE_TYPE, /* u8 */ DEVLINK_ATTR_FMSG_OBJ_VALUE_DATA, /* dynamic */ + + DEVLINK_ATTR_HEALTH_REPORTER, /* nested */ + DEVLINK_ATTR_HEALTH_REPORTER_NAME, /* string */ + DEVLINK_ATTR_HEALTH_REPORTER_STATE, /* u8 */ + DEVLINK_ATTR_HEALTH_REPORTER_ERR, /* u64 */ + DEVLINK_ATTR_HEALTH_REPORTER_RECOVER, /* u64 */ + DEVLINK_ATTR_HEALTH_REPORTER_DUMP_TS, /* u64 */ + DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD, /* u64 */ + DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER, /* u8 */ /* add new attributes above here, update the policy in devlink.c */ __DEVLINK_ATTR_MAX, diff --git a/net/core/devlink.c b/net/core/devlink.c index 3eaa290831aa..86f7c0e5d4bc 100644 --- a/net/core/devlink.c +++ b/net/core/devlink.c @@ -4572,6 +4572,146 @@ int devlink_health_report(struct devlink_health_reporter *reporter, } EXPORT_SYMBOL_GPL(devlink_health_report); +static struct devlink_health_reporter * +devlink_health_reporter_get_from_info(struct devlink *devlink, + struct genl_info *info) +{ + char *reporter_name; + + if (!info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_NAME]) + return NULL; + + reporter_name = + nla_data(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_NAME]); + return devlink_health_reporter_find_by_name(devlink, reporter_name); +} + +static int +devlink_nl_health_reporter_fill(struct sk_buff *msg, + struct devlink *devlink, + struct devlink_health_reporter *reporter, + enum devlink_command cmd, u32 portid, + u32 seq, int flags) +{ + struct nlattr *reporter_attr; + 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 genlmsg_cancel; + + reporter_attr = nla_nest_start(msg, DEVLINK_ATTR_HEALTH_REPORTER); + if (!reporter_attr) + goto genlmsg_cancel; + if (nla_put_string(msg, DEVLINK_ATTR_HEALTH_REPORTER_NAME, + reporter->ops->name)) + goto reporter_nest_cancel; + if (nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_STATE, + reporter->health_state)) + goto reporter_nest_cancel; + if (nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_ERR, + reporter->error_count, DEVLINK_ATTR_PAD)) + goto reporter_nest_cancel; + if (nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_RECOVER, + reporter->recovery_count, DEVLINK_ATTR_PAD)) + goto reporter_nest_cancel; + if (nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD, + reporter->graceful_period, + DEVLINK_ATTR_PAD)) + goto reporter_nest_cancel; + if (nla_put_u8(msg, DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER, + reporter->auto_recover)) + goto reporter_nest_cancel; + if (reporter->dump_fmsg && + nla_put_u64_64bit(msg, DEVLINK_ATTR_HEALTH_REPORTER_DUMP_TS, + jiffies_to_msecs(reporter->dump_ts), + DEVLINK_ATTR_PAD)) + goto reporter_nest_cancel; + + nla_nest_end(msg, reporter_attr); + genlmsg_end(msg, hdr); + return 0; + +reporter_nest_cancel: + nla_nest_end(msg, reporter_attr); +genlmsg_cancel: + genlmsg_cancel(msg, hdr); + return -EMSGSIZE; +} + +static int devlink_nl_cmd_health_reporter_get_doit(struct sk_buff *skb, + struct genl_info *info) +{ + struct devlink *devlink = info->user_ptr[0]; + struct devlink_health_reporter *reporter; + struct sk_buff *msg; + int err; + + reporter = devlink_health_reporter_get_from_info(devlink, info); + if (!reporter) + return -EINVAL; + + msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); + if (!msg) + return -ENOMEM; + + err = devlink_nl_health_reporter_fill(msg, devlink, reporter, + DEVLINK_CMD_HEALTH_REPORTER_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_health_reporter_get_dumpit(struct sk_buff *msg, + struct netlink_callback *cb) +{ + struct devlink_health_reporter *reporter; + 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(reporter, &devlink->reporter_list, + list) { + if (idx < start) { + idx++; + continue; + } + err = devlink_nl_health_reporter_fill(msg, devlink, + reporter, + DEVLINK_CMD_HEALTH_REPORTER_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 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 }, @@ -4597,6 +4737,7 @@ static const struct nla_policy devlink_nl_policy[DEVLINK_ATTR_MAX + 1] = { [DEVLINK_ATTR_PARAM_VALUE_CMODE] = { .type = NLA_U8 }, [DEVLINK_ATTR_REGION_NAME] = { .type = NLA_NUL_STRING }, [DEVLINK_ATTR_REGION_SNAPSHOT_ID] = { .type = NLA_U32 }, + [DEVLINK_ATTR_HEALTH_REPORTER_NAME] = { .type = NLA_NUL_STRING }, }; static const struct genl_ops devlink_nl_ops[] = { @@ -4840,6 +4981,14 @@ static const struct genl_ops devlink_nl_ops[] = { .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK, /* can be retrieved by unprivileged users */ }, + { + .cmd = DEVLINK_CMD_HEALTH_REPORTER_GET, + .doit = devlink_nl_cmd_health_reporter_get_doit, + .dumpit = devlink_nl_cmd_health_reporter_get_dumpit, + .policy = devlink_nl_policy, + .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK, + /* can be retrieved by unprivileged users */ + }, }; static struct genl_family devlink_nl_family __ro_after_init = { -- cgit v1.2.3 From a1e55ec0a0c6969cb7e9d9080a84041bb7b2b6e6 Mon Sep 17 00:00:00 2001 From: Eran Ben Elisha Date: Thu, 7 Feb 2019 11:36:36 +0200 Subject: devlink: Add health set command Add devlink health set command, in order to set configuration parameters for a specific reporter. Supported parameters are: - graceful_period: Time interval between auto recoveries (in msec) - auto_recover: Determines if the devlink shall execute recover upon receiving error for the reporter Signed-off-by: Eran Ben Elisha Reviewed-by: Moshe Shemesh Acked-by: Jiri Pirko Signed-off-by: David S. Miller --- include/uapi/linux/devlink.h | 1 + net/core/devlink.c | 36 ++++++++++++++++++++++++++++++++++++ 2 files changed, 37 insertions(+) (limited to 'include/uapi/linux') diff --git a/include/uapi/linux/devlink.h b/include/uapi/linux/devlink.h index d8f20d6ce139..b03065a99884 100644 --- a/include/uapi/linux/devlink.h +++ b/include/uapi/linux/devlink.h @@ -97,6 +97,7 @@ enum devlink_command { DEVLINK_CMD_INFO_GET, /* can dump */ DEVLINK_CMD_HEALTH_REPORTER_GET, + DEVLINK_CMD_HEALTH_REPORTER_SET, /* add new commands above here */ __DEVLINK_CMD_MAX, diff --git a/net/core/devlink.c b/net/core/devlink.c index 86f7c0e5d4bc..0b231fb76e59 100644 --- a/net/core/devlink.c +++ b/net/core/devlink.c @@ -4712,6 +4712,33 @@ out: return msg->len; } +static int +devlink_nl_cmd_health_reporter_set_doit(struct sk_buff *skb, + struct genl_info *info) +{ + struct devlink *devlink = info->user_ptr[0]; + struct devlink_health_reporter *reporter; + + reporter = devlink_health_reporter_get_from_info(devlink, info); + if (!reporter) + return -EINVAL; + + if (!reporter->ops->recover && + (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD] || + info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER])) + return -EOPNOTSUPP; + + if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD]) + reporter->graceful_period = + nla_get_u64(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD]); + + if (info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER]) + reporter->auto_recover = + nla_get_u8(info->attrs[DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER]); + + 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 }, @@ -4738,6 +4765,8 @@ static const struct nla_policy devlink_nl_policy[DEVLINK_ATTR_MAX + 1] = { [DEVLINK_ATTR_REGION_NAME] = { .type = NLA_NUL_STRING }, [DEVLINK_ATTR_REGION_SNAPSHOT_ID] = { .type = NLA_U32 }, [DEVLINK_ATTR_HEALTH_REPORTER_NAME] = { .type = NLA_NUL_STRING }, + [DEVLINK_ATTR_HEALTH_REPORTER_GRACEFUL_PERIOD] = { .type = NLA_U64 }, + [DEVLINK_ATTR_HEALTH_REPORTER_AUTO_RECOVER] = { .type = NLA_U8 }, }; static const struct genl_ops devlink_nl_ops[] = { @@ -4989,6 +5018,13 @@ static const struct genl_ops devlink_nl_ops[] = { .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK, /* can be retrieved by unprivileged users */ }, + { + .cmd = DEVLINK_CMD_HEALTH_REPORTER_SET, + .doit = devlink_nl_cmd_health_reporter_set_doit, + .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 = { -- cgit v1.2.3 From 20a0943a5b237f7d59dc581e9e3637f5c87f1fde Mon Sep 17 00:00:00 2001 From: Eran Ben Elisha Date: Thu, 7 Feb 2019 11:36:37 +0200 Subject: devlink: Add health recover command Add devlink health recover command to the uapi, in order to allow the user to execute a recover operation over a specific reporter. Signed-off-by: Eran Ben Elisha Reviewed-by: Moshe Shemesh Acked-by: Jiri Pirko Signed-off-by: David S. Miller --- include/uapi/linux/devlink.h | 1 + net/core/devlink.c | 20 ++++++++++++++++++++ 2 files changed, 21 insertions(+) (limited to 'include/uapi/linux') diff --git a/include/uapi/linux/devlink.h b/include/uapi/linux/devlink.h index b03065a99884..a3a97e6edad8 100644 --- a/include/uapi/linux/devlink.h +++ b/include/uapi/linux/devlink.h @@ -98,6 +98,7 @@ enum devlink_command { DEVLINK_CMD_HEALTH_REPORTER_GET, DEVLINK_CMD_HEALTH_REPORTER_SET, + DEVLINK_CMD_HEALTH_REPORTER_RECOVER, /* add new commands above here */ __DEVLINK_CMD_MAX, diff --git a/net/core/devlink.c b/net/core/devlink.c index 0b231fb76e59..0e6b0e034863 100644 --- a/net/core/devlink.c +++ b/net/core/devlink.c @@ -4739,6 +4739,19 @@ devlink_nl_cmd_health_reporter_set_doit(struct sk_buff *skb, return 0; } +static int devlink_nl_cmd_health_reporter_recover_doit(struct sk_buff *skb, + struct genl_info *info) +{ + struct devlink *devlink = info->user_ptr[0]; + struct devlink_health_reporter *reporter; + + reporter = devlink_health_reporter_get_from_info(devlink, info); + if (!reporter) + return -EINVAL; + + return devlink_health_reporter_recover(reporter, NULL); +} + 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 }, @@ -5025,6 +5038,13 @@ static const struct genl_ops devlink_nl_ops[] = { .flags = GENL_ADMIN_PERM, .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK, }, + { + .cmd = DEVLINK_CMD_HEALTH_REPORTER_RECOVER, + .doit = devlink_nl_cmd_health_reporter_recover_doit, + .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 = { -- cgit v1.2.3 From fca42a2794e31379855c7d687055da43a6e05eef Mon Sep 17 00:00:00 2001 From: Eran Ben Elisha Date: Thu, 7 Feb 2019 11:36:38 +0200 Subject: devlink: Add health diagnose command Add devlink health diagnose command, in order to run a diagnose operation over a specific reporter. It is expected from driver's callback for diagnose command to fill it via the devlink fmsg API. Devlink will parse it and convert it to netlink nla API in order to pass it to the user. Signed-off-by: Eran Ben Elisha Reviewed-by: Moshe Shemesh Acked-by: Jiri Pirko Signed-off-by: David S. Miller --- include/uapi/linux/devlink.h | 1 + net/core/devlink.c | 46 ++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 47 insertions(+) (limited to 'include/uapi/linux') diff --git a/include/uapi/linux/devlink.h b/include/uapi/linux/devlink.h index a3a97e6edad8..09be37137841 100644 --- a/include/uapi/linux/devlink.h +++ b/include/uapi/linux/devlink.h @@ -99,6 +99,7 @@ enum devlink_command { DEVLINK_CMD_HEALTH_REPORTER_GET, DEVLINK_CMD_HEALTH_REPORTER_SET, DEVLINK_CMD_HEALTH_REPORTER_RECOVER, + DEVLINK_CMD_HEALTH_REPORTER_DIAGNOSE, /* add new commands above here */ __DEVLINK_CMD_MAX, diff --git a/net/core/devlink.c b/net/core/devlink.c index 0e6b0e034863..1e8613db2bf7 100644 --- a/net/core/devlink.c +++ b/net/core/devlink.c @@ -4752,6 +4752,45 @@ static int devlink_nl_cmd_health_reporter_recover_doit(struct sk_buff *skb, return devlink_health_reporter_recover(reporter, NULL); } +static int devlink_nl_cmd_health_reporter_diagnose_doit(struct sk_buff *skb, + struct genl_info *info) +{ + struct devlink *devlink = info->user_ptr[0]; + struct devlink_health_reporter *reporter; + struct devlink_fmsg *fmsg; + int err; + + reporter = devlink_health_reporter_get_from_info(devlink, info); + if (!reporter) + return -EINVAL; + + if (!reporter->ops->diagnose) + return -EOPNOTSUPP; + + fmsg = devlink_fmsg_alloc(); + if (!fmsg) + return -ENOMEM; + + err = devlink_fmsg_obj_nest_start(fmsg); + if (err) + goto out; + + err = reporter->ops->diagnose(reporter, fmsg); + if (err) + goto out; + + err = devlink_fmsg_obj_nest_end(fmsg); + if (err) + goto out; + + err = devlink_fmsg_snd(fmsg, info, + DEVLINK_CMD_HEALTH_REPORTER_DIAGNOSE, 0); + +out: + devlink_fmsg_free(fmsg); + return err; +} + 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 }, @@ -5045,6 +5084,13 @@ static const struct genl_ops devlink_nl_ops[] = { .flags = GENL_ADMIN_PERM, .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK, }, + { + .cmd = DEVLINK_CMD_HEALTH_REPORTER_DIAGNOSE, + .doit = devlink_nl_cmd_health_reporter_diagnose_doit, + .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 = { -- cgit v1.2.3 From 35455e23e6f3cffe20e2b948e57597a8dc240b1e Mon Sep 17 00:00:00 2001 From: Eran Ben Elisha Date: Thu, 7 Feb 2019 11:36:39 +0200 Subject: devlink: Add health dump {get,clear} commands Add devlink health dump commands, in order to run an dump operation over a specific reporter. The supported operations are dump_get in order to get last saved dump (if not exist, dump now) and dump_clear to clear last saved dump. It is expected from driver's callback for diagnose command to fill it via the devlink fmsg API. Devlink will parse it and convert it to netlink nla API in order to pass it to the user. Signed-off-by: Eran Ben Elisha Reviewed-by: Moshe Shemesh Acked-by: Jiri Pirko Signed-off-by: David S. Miller --- include/uapi/linux/devlink.h | 2 ++ net/core/devlink.c | 63 ++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 65 insertions(+) (limited to 'include/uapi/linux') diff --git a/include/uapi/linux/devlink.h b/include/uapi/linux/devlink.h index 09be37137841..72d9f7c89190 100644 --- a/include/uapi/linux/devlink.h +++ b/include/uapi/linux/devlink.h @@ -100,6 +100,8 @@ enum devlink_command { DEVLINK_CMD_HEALTH_REPORTER_SET, DEVLINK_CMD_HEALTH_REPORTER_RECOVER, DEVLINK_CMD_HEALTH_REPORTER_DIAGNOSE, + DEVLINK_CMD_HEALTH_REPORTER_DUMP_GET, + DEVLINK_CMD_HEALTH_REPORTER_DUMP_CLEAR, /* add new commands above here */ __DEVLINK_CMD_MAX, diff --git a/net/core/devlink.c b/net/core/devlink.c index 1e8613db2bf7..7fbdba547d4f 100644 --- a/net/core/devlink.c +++ b/net/core/devlink.c @@ -4791,6 +4791,53 @@ out: return err; } +static int devlink_nl_cmd_health_reporter_dump_get_doit(struct sk_buff *skb, + struct genl_info *info) +{ + struct devlink *devlink = info->user_ptr[0]; + struct devlink_health_reporter *reporter; + int err; + + reporter = devlink_health_reporter_get_from_info(devlink, info); + if (!reporter) + return -EINVAL; + + if (!reporter->ops->dump) + return -EOPNOTSUPP; + + mutex_lock(&reporter->dump_lock); + err = devlink_health_do_dump(reporter, NULL); + if (err) + goto out; + + err = devlink_fmsg_snd(reporter->dump_fmsg, info, + DEVLINK_CMD_HEALTH_REPORTER_DUMP_GET, 0); + +out: + mutex_unlock(&reporter->dump_lock); + return err; +} + +static int +devlink_nl_cmd_health_reporter_dump_clear_doit(struct sk_buff *skb, + struct genl_info *info) +{ + struct devlink *devlink = info->user_ptr[0]; + struct devlink_health_reporter *reporter; + + reporter = devlink_health_reporter_get_from_info(devlink, info); + if (!reporter) + return -EINVAL; + + if (!reporter->ops->dump) + return -EOPNOTSUPP; + + mutex_lock(&reporter->dump_lock); + devlink_health_dump_clear(reporter); + mutex_unlock(&reporter->dump_lock); + 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 }, @@ -5091,6 +5138,22 @@ static const struct genl_ops devlink_nl_ops[] = { .flags = GENL_ADMIN_PERM, .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK, }, + { + .cmd = DEVLINK_CMD_HEALTH_REPORTER_DUMP_GET, + .doit = devlink_nl_cmd_health_reporter_dump_get_doit, + .policy = devlink_nl_policy, + .flags = GENL_ADMIN_PERM, + .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK | + DEVLINK_NL_FLAG_NO_LOCK, + }, + { + .cmd = DEVLINK_CMD_HEALTH_REPORTER_DUMP_CLEAR, + .doit = devlink_nl_cmd_health_reporter_dump_clear_doit, + .policy = devlink_nl_policy, + .flags = GENL_ADMIN_PERM, + .internal_flags = DEVLINK_NL_FLAG_NEED_DEVLINK | + DEVLINK_NL_FLAG_NO_LOCK, + }, }; static struct genl_family devlink_nl_family __ro_after_init = { -- cgit v1.2.3