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ethtool: provide link state with LINKSTATE_GET request

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Implement LINKSTATE_GET netlink request to get link state information.

At the moment, only link up flag as provided by ETHTOOL_GLINK ioctl command
is returned.

LINKSTATE_GET request can be used with NLM_F_DUMP (without device
identification) to request the information for all devices in current
network namespace providing the data.

Signed-off-by: Michal Kubecek <mkubecek@suse.cz>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Michal Kubecek
2019-12-27 15:56:23 +01:00
committed by David S. Miller
parent 1b1b1847c8
commit 3d2b847fb9
9 changed files with 146 additions and 6 deletions
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8
net/ethtool/netlink.c
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@@ -210,6 +210,7 @@ ethnl_default_requests[__ETHTOOL_MSG_USER_CNT] = {
[ETHTOOL_MSG_STRSET_GET] = &ethnl_strset_request_ops,
[ETHTOOL_MSG_LINKINFO_GET] = &ethnl_linkinfo_request_ops,
[ETHTOOL_MSG_LINKMODES_GET] = &ethnl_linkmodes_request_ops,
[ETHTOOL_MSG_LINKSTATE_GET] = &ethnl_linkstate_request_ops,
};
static struct ethnl_dump_ctx *ethnl_dump_context(struct netlink_callback *cb)
@@ -645,6 +646,13 @@ static const struct genl_ops ethtool_genl_ops[] = {
.flags = GENL_UNS_ADMIN_PERM,
.doit = ethnl_set_linkmodes,
},
{
.cmd = ETHTOOL_MSG_LINKSTATE_GET,
.doit = ethnl_default_doit,
.start = ethnl_default_start,
.dumpit = ethnl_default_dumpit,
.done = ethnl_default_done,
},
};
static const struct genl_multicast_group ethtool_nl_mcgrps[] = {