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| author | Michal Kubecek <mkubecek@suse.cz> | 2020-03-28 00:01:28 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-03-29 22:32:36 -0700 |
| commit | 3ab879933d3cf69f8896dc7ad543eee06fd229ba (patch) | |
| tree | 1af1b1bb9c2cb1dfd0e5ae1ffefef78235afc2b5 /net/ethtool | |
| parent | 7f59fb32b0960f1e19651379d8e130bd017054bf (diff) | |
| download | lwn-3ab879933d3cf69f8896dc7ad543eee06fd229ba.tar.gz lwn-3ab879933d3cf69f8896dc7ad543eee06fd229ba.zip | |
ethtool: set pause parameters with PAUSE_SET request
Implement PAUSE_SET netlink request to set pause parameters of a network
device. Thease are traditionally set with ETHTOOL_SPAUSEPARAM ioctl
request.
Signed-off-by: Michal Kubecek <mkubecek@suse.cz>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ethtool')
| -rw-r--r-- | net/ethtool/netlink.c | 5 | ||||
| -rw-r--r-- | net/ethtool/netlink.h | 1 | ||||
| -rw-r--r-- | net/ethtool/pause.c | 61 |
3 files changed, 67 insertions, 0 deletions
diff --git a/net/ethtool/netlink.c b/net/ethtool/netlink.c index ca1695de8c9d..1ca30578e642 100644 --- a/net/ethtool/netlink.c +++ b/net/ethtool/netlink.c @@ -809,6 +809,11 @@ static const struct genl_ops ethtool_genl_ops[] = { .dumpit = ethnl_default_dumpit, .done = ethnl_default_done, }, + { + .cmd = ETHTOOL_MSG_PAUSE_SET, + .flags = GENL_UNS_ADMIN_PERM, + .doit = ethnl_set_pause, + }, }; static const struct genl_multicast_group ethtool_nl_mcgrps[] = { diff --git a/net/ethtool/netlink.h b/net/ethtool/netlink.h index e14ac089bfb1..49fee19bc6aa 100644 --- a/net/ethtool/netlink.h +++ b/net/ethtool/netlink.h @@ -353,5 +353,6 @@ int ethnl_set_privflags(struct sk_buff *skb, struct genl_info *info); int ethnl_set_rings(struct sk_buff *skb, struct genl_info *info); int ethnl_set_channels(struct sk_buff *skb, struct genl_info *info); int ethnl_set_coalesce(struct sk_buff *skb, struct genl_info *info); +int ethnl_set_pause(struct sk_buff *skb, struct genl_info *info); #endif /* _NET_ETHTOOL_NETLINK_H */ diff --git a/net/ethtool/pause.c b/net/ethtool/pause.c index 9feafeb7bb1c..c307b91fdfba 100644 --- a/net/ethtool/pause.c +++ b/net/ethtool/pause.c @@ -79,3 +79,64 @@ const struct ethnl_request_ops ethnl_pause_request_ops = { .reply_size = pause_reply_size, .fill_reply = pause_fill_reply, }; + +/* PAUSE_SET */ + +static const struct nla_policy +pause_set_policy[ETHTOOL_A_PAUSE_MAX + 1] = { + [ETHTOOL_A_PAUSE_UNSPEC] = { .type = NLA_REJECT }, + [ETHTOOL_A_PAUSE_HEADER] = { .type = NLA_NESTED }, + [ETHTOOL_A_PAUSE_AUTONEG] = { .type = NLA_U8 }, + [ETHTOOL_A_PAUSE_RX] = { .type = NLA_U8 }, + [ETHTOOL_A_PAUSE_TX] = { .type = NLA_U8 }, +}; + +int ethnl_set_pause(struct sk_buff *skb, struct genl_info *info) +{ + struct nlattr *tb[ETHTOOL_A_PAUSE_MAX + 1]; + struct ethtool_pauseparam params = {}; + struct ethnl_req_info req_info = {}; + const struct ethtool_ops *ops; + struct net_device *dev; + bool mod = false; + int ret; + + ret = nlmsg_parse(info->nlhdr, GENL_HDRLEN, tb, ETHTOOL_A_PAUSE_MAX, + pause_set_policy, info->extack); + if (ret < 0) + return ret; + ret = ethnl_parse_header_dev_get(&req_info, + tb[ETHTOOL_A_PAUSE_HEADER], + genl_info_net(info), info->extack, + true); + if (ret < 0) + return ret; + dev = req_info.dev; + ops = dev->ethtool_ops; + ret = -EOPNOTSUPP; + if (!ops->get_pauseparam || !ops->set_pauseparam) + goto out_dev; + + rtnl_lock(); + ret = ethnl_ops_begin(dev); + if (ret < 0) + goto out_rtnl; + ops->get_pauseparam(dev, ¶ms); + + ethnl_update_bool32(¶ms.autoneg, tb[ETHTOOL_A_PAUSE_AUTONEG], &mod); + ethnl_update_bool32(¶ms.rx_pause, tb[ETHTOOL_A_PAUSE_RX], &mod); + ethnl_update_bool32(¶ms.tx_pause, tb[ETHTOOL_A_PAUSE_TX], &mod); + ret = 0; + if (!mod) + goto out_ops; + + ret = dev->ethtool_ops->set_pauseparam(dev, ¶ms); + +out_ops: + ethnl_ops_complete(dev); +out_rtnl: + rtnl_unlock(); +out_dev: + dev_put(dev); + return ret; +} |