lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:   Thu,  7 Feb 2019 11:36:38 +0200
From:   Eran Ben Elisha <eranbe@...lanox.com>
To:     netdev@...r.kernel.org, "David S. Miller" <davem@...emloft.net>
Cc:     Saeed Mahameed <saeedm@...lanox.com>,
        Jiri Pirko <jiri@...lanox.com>,
        Moshe Shemesh <moshe@...lanox.com>,
        Aya Levin <ayal@...lanox.com>,
        Eran Ben Elisha <eranbe@...lanox.com>
Subject: [PATCH v4 net-next 07/11] 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 <eranbe@...lanox.com>
Reviewed-by: Moshe Shemesh <moshe@...lanox.com>
Acked-by: Jiri Pirko <jiri@...lanox.com>
---
 include/uapi/linux/devlink.h |  1 +
 net/core/devlink.c           | 46 ++++++++++++++++++++++++++++++++++++
 2 files changed, 47 insertions(+)

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 = {
-- 
2.17.1

Powered by blists - more mailing lists