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authorMichal Kubecek <mkubecek@suse.cz>2020-03-28 02:01:28 +0300
committerDavid S. Miller <davem@davemloft.net>2020-03-30 08:32:36 +0300
commit3ab879933d3cf69f8896dc7ad543eee06fd229ba (patch)
tree1af1b1bb9c2cb1dfd0e5ae1ffefef78235afc2b5 /net/ethtool/pause.c
parent7f59fb32b0960f1e19651379d8e130bd017054bf (diff)
downloadlinux-3ab879933d3cf69f8896dc7ad543eee06fd229ba.tar.xz
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/pause.c')
-rw-r--r--net/ethtool/pause.c61
1 files changed, 61 insertions, 0 deletions
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, &params);
+
+ ethnl_update_bool32(&params.autoneg, tb[ETHTOOL_A_PAUSE_AUTONEG], &mod);
+ ethnl_update_bool32(&params.rx_pause, tb[ETHTOOL_A_PAUSE_RX], &mod);
+ ethnl_update_bool32(&params.tx_pause, tb[ETHTOOL_A_PAUSE_TX], &mod);
+ ret = 0;
+ if (!mod)
+ goto out_ops;
+
+ ret = dev->ethtool_ops->set_pauseparam(dev, &params);
+
+out_ops:
+ ethnl_ops_complete(dev);
+out_rtnl:
+ rtnl_unlock();
+out_dev:
+ dev_put(dev);
+ return ret;
+}