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| author | Michal Kubecek <mkubecek@suse.cz> | 2020-01-26 23:11:07 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-01-27 11:31:35 +0100 |
| commit | e54d04e3afead22d8e7d6edaaac487a1205bac39 (patch) | |
| tree | a2029b5c1e543e4cad5d2ea420a741a6af3c3843 /net/ethtool | |
| parent | 6a94b8ccf6b77f005ab1b36a878e1d81df0c033e (diff) | |
| download | linux-e54d04e3afead22d8e7d6edaaac487a1205bac39.tar.gz linux-e54d04e3afead22d8e7d6edaaac487a1205bac39.tar.bz2 linux-e54d04e3afead22d8e7d6edaaac487a1205bac39.zip | |
ethtool: set message mask with DEBUG_SET request
Implement DEBUG_SET netlink request to set debugging settings for a device.
At the moment, only message mask corresponding to message level as set by
ETHTOOL_SMSGLVL ioctl request can be set. (It is called message level in
ioctl interface but almost all drivers interpret it as a bit mask.)
Signed-off-by: Michal Kubecek <mkubecek@suse.cz>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ethtool')
| -rw-r--r-- | net/ethtool/debug.c | 53 | ||||
| -rw-r--r-- | net/ethtool/netlink.c | 5 | ||||
| -rw-r--r-- | net/ethtool/netlink.h | 1 |
3 files changed, 59 insertions, 0 deletions
diff --git a/net/ethtool/debug.c b/net/ethtool/debug.c index cc121a23be5f..6fc3ef8113c0 100644 --- a/net/ethtool/debug.c +++ b/net/ethtool/debug.c @@ -78,3 +78,56 @@ const struct ethnl_request_ops ethnl_debug_request_ops = { .reply_size = debug_reply_size, .fill_reply = debug_fill_reply, }; + +/* DEBUG_SET */ + +static const struct nla_policy +debug_set_policy[ETHTOOL_A_DEBUG_MAX + 1] = { + [ETHTOOL_A_DEBUG_UNSPEC] = { .type = NLA_REJECT }, + [ETHTOOL_A_DEBUG_HEADER] = { .type = NLA_NESTED }, + [ETHTOOL_A_DEBUG_MSGMASK] = { .type = NLA_NESTED }, +}; + +int ethnl_set_debug(struct sk_buff *skb, struct genl_info *info) +{ + struct nlattr *tb[ETHTOOL_A_DEBUG_MAX + 1]; + struct ethnl_req_info req_info = {}; + struct net_device *dev; + bool mod = false; + u32 msg_mask; + int ret; + + ret = nlmsg_parse(info->nlhdr, GENL_HDRLEN, tb, + ETHTOOL_A_DEBUG_MAX, debug_set_policy, + info->extack); + if (ret < 0) + return ret; + ret = ethnl_parse_header(&req_info, tb[ETHTOOL_A_DEBUG_HEADER], + genl_info_net(info), info->extack, true); + if (ret < 0) + return ret; + dev = req_info.dev; + if (!dev->ethtool_ops->get_msglevel || !dev->ethtool_ops->set_msglevel) + return -EOPNOTSUPP; + + rtnl_lock(); + ret = ethnl_ops_begin(dev); + if (ret < 0) + goto out_rtnl; + + msg_mask = dev->ethtool_ops->get_msglevel(dev); + ret = ethnl_update_bitset32(&msg_mask, NETIF_MSG_CLASS_COUNT, + tb[ETHTOOL_A_DEBUG_MSGMASK], + netif_msg_class_names, info->extack, &mod); + if (ret < 0 || !mod) + goto out_ops; + + dev->ethtool_ops->set_msglevel(dev, msg_mask); + +out_ops: + ethnl_ops_complete(dev); +out_rtnl: + rtnl_unlock(); + dev_put(dev); + return ret; +} diff --git a/net/ethtool/netlink.c b/net/ethtool/netlink.c index bdaf583e392b..bcdc42e0bd14 100644 --- a/net/ethtool/netlink.c +++ b/net/ethtool/netlink.c @@ -672,6 +672,11 @@ static const struct genl_ops ethtool_genl_ops[] = { .dumpit = ethnl_default_dumpit, .done = ethnl_default_done, }, + { + .cmd = ETHTOOL_MSG_DEBUG_SET, + .flags = GENL_UNS_ADMIN_PERM, + .doit = ethnl_set_debug, + }, }; static const struct genl_multicast_group ethtool_nl_mcgrps[] = { diff --git a/net/ethtool/netlink.h b/net/ethtool/netlink.h index 9bd8ef671501..772723e536e8 100644 --- a/net/ethtool/netlink.h +++ b/net/ethtool/netlink.h @@ -338,5 +338,6 @@ extern const struct ethnl_request_ops ethnl_debug_request_ops; int ethnl_set_linkinfo(struct sk_buff *skb, struct genl_info *info); int ethnl_set_linkmodes(struct sk_buff *skb, struct genl_info *info); +int ethnl_set_debug(struct sk_buff *skb, struct genl_info *info); #endif /* _NET_ETHTOOL_NETLINK_H */ |