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Diffstat (limited to 'net/ethtool/rings.c')
-rw-r--r--net/ethtool/rings.c118
1 files changed, 57 insertions, 61 deletions
diff --git a/net/ethtool/rings.c b/net/ethtool/rings.c
index fa3ec8d438f7..f358cd57d094 100644
--- a/net/ethtool/rings.c
+++ b/net/ethtool/rings.c
@@ -56,7 +56,8 @@ static int rings_reply_size(const struct ethnl_req_info *req_base,
nla_total_size(sizeof(u32)) + /* _RINGS_RX_BUF_LEN */
nla_total_size(sizeof(u8)) + /* _RINGS_TCP_DATA_SPLIT */
nla_total_size(sizeof(u32) + /* _RINGS_CQE_SIZE */
- nla_total_size(sizeof(u8))); /* _RINGS_TX_PUSH */
+ nla_total_size(sizeof(u8)) + /* _RINGS_TX_PUSH */
+ nla_total_size(sizeof(u8))); /* _RINGS_RX_PUSH */
}
static int rings_fill_reply(struct sk_buff *skb,
@@ -96,24 +97,13 @@ static int rings_fill_reply(struct sk_buff *skb,
kr->tcp_data_split))) ||
(kr->cqe_size &&
(nla_put_u32(skb, ETHTOOL_A_RINGS_CQE_SIZE, kr->cqe_size))) ||
- nla_put_u8(skb, ETHTOOL_A_RINGS_TX_PUSH, !!kr->tx_push))
+ nla_put_u8(skb, ETHTOOL_A_RINGS_TX_PUSH, !!kr->tx_push) ||
+ nla_put_u8(skb, ETHTOOL_A_RINGS_RX_PUSH, !!kr->rx_push))
return -EMSGSIZE;
return 0;
}
-const struct ethnl_request_ops ethnl_rings_request_ops = {
- .request_cmd = ETHTOOL_MSG_RINGS_GET,
- .reply_cmd = ETHTOOL_MSG_RINGS_GET_REPLY,
- .hdr_attr = ETHTOOL_A_RINGS_HEADER,
- .req_info_size = sizeof(struct rings_req_info),
- .reply_data_size = sizeof(struct rings_reply_data),
-
- .prepare_data = rings_prepare_data,
- .reply_size = rings_reply_size,
- .fill_reply = rings_fill_reply,
-};
-
/* RINGS_SET */
const struct nla_policy ethnl_rings_set_policy[] = {
@@ -126,64 +116,64 @@ const struct nla_policy ethnl_rings_set_policy[] = {
[ETHTOOL_A_RINGS_RX_BUF_LEN] = NLA_POLICY_MIN(NLA_U32, 1),
[ETHTOOL_A_RINGS_CQE_SIZE] = NLA_POLICY_MIN(NLA_U32, 1),
[ETHTOOL_A_RINGS_TX_PUSH] = NLA_POLICY_MAX(NLA_U8, 1),
+ [ETHTOOL_A_RINGS_RX_PUSH] = NLA_POLICY_MAX(NLA_U8, 1),
};
-int ethnl_set_rings(struct sk_buff *skb, struct genl_info *info)
+static int
+ethnl_set_rings_validate(struct ethnl_req_info *req_info,
+ struct genl_info *info)
{
- struct kernel_ethtool_ringparam kernel_ringparam = {};
- struct ethtool_ringparam ringparam = {};
- struct ethnl_req_info req_info = {};
+ const struct ethtool_ops *ops = req_info->dev->ethtool_ops;
struct nlattr **tb = info->attrs;
- const struct nlattr *err_attr;
- const struct ethtool_ops *ops;
- struct net_device *dev;
- bool mod = false;
- int ret;
-
- ret = ethnl_parse_header_dev_get(&req_info,
- tb[ETHTOOL_A_RINGS_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_ringparam || !ops->set_ringparam)
- goto out_dev;
if (tb[ETHTOOL_A_RINGS_RX_BUF_LEN] &&
!(ops->supported_ring_params & ETHTOOL_RING_USE_RX_BUF_LEN)) {
- ret = -EOPNOTSUPP;
NL_SET_ERR_MSG_ATTR(info->extack,
tb[ETHTOOL_A_RINGS_RX_BUF_LEN],
"setting rx buf len not supported");
- goto out_dev;
+ return -EOPNOTSUPP;
}
if (tb[ETHTOOL_A_RINGS_CQE_SIZE] &&
!(ops->supported_ring_params & ETHTOOL_RING_USE_CQE_SIZE)) {
- ret = -EOPNOTSUPP;
NL_SET_ERR_MSG_ATTR(info->extack,
tb[ETHTOOL_A_RINGS_CQE_SIZE],
"setting cqe size not supported");
- goto out_dev;
+ return -EOPNOTSUPP;
}
if (tb[ETHTOOL_A_RINGS_TX_PUSH] &&
!(ops->supported_ring_params & ETHTOOL_RING_USE_TX_PUSH)) {
- ret = -EOPNOTSUPP;
NL_SET_ERR_MSG_ATTR(info->extack,
tb[ETHTOOL_A_RINGS_TX_PUSH],
"setting tx push not supported");
- goto out_dev;
+ return -EOPNOTSUPP;
}
- rtnl_lock();
- ret = ethnl_ops_begin(dev);
- if (ret < 0)
- goto out_rtnl;
- ops->get_ringparam(dev, &ringparam, &kernel_ringparam, info->extack);
+ if (tb[ETHTOOL_A_RINGS_RX_PUSH] &&
+ !(ops->supported_ring_params & ETHTOOL_RING_USE_RX_PUSH)) {
+ NL_SET_ERR_MSG_ATTR(info->extack,
+ tb[ETHTOOL_A_RINGS_RX_PUSH],
+ "setting rx push not supported");
+ return -EOPNOTSUPP;
+ }
+
+ return ops->get_ringparam && ops->set_ringparam ? 1 : -EOPNOTSUPP;
+}
+
+static int
+ethnl_set_rings(struct ethnl_req_info *req_info, struct genl_info *info)
+{
+ struct kernel_ethtool_ringparam kernel_ringparam = {};
+ struct ethtool_ringparam ringparam = {};
+ struct net_device *dev = req_info->dev;
+ struct nlattr **tb = info->attrs;
+ const struct nlattr *err_attr;
+ bool mod = false;
+ int ret;
+
+ dev->ethtool_ops->get_ringparam(dev, &ringparam,
+ &kernel_ringparam, info->extack);
ethnl_update_u32(&ringparam.rx_pending, tb[ETHTOOL_A_RINGS_RX], &mod);
ethnl_update_u32(&ringparam.rx_mini_pending,
@@ -197,9 +187,10 @@ int ethnl_set_rings(struct sk_buff *skb, struct genl_info *info)
tb[ETHTOOL_A_RINGS_CQE_SIZE], &mod);
ethnl_update_u8(&kernel_ringparam.tx_push,
tb[ETHTOOL_A_RINGS_TX_PUSH], &mod);
- ret = 0;
+ ethnl_update_u8(&kernel_ringparam.rx_push,
+ tb[ETHTOOL_A_RINGS_RX_PUSH], &mod);
if (!mod)
- goto out_ops;
+ return 0;
/* ensure new ring parameters are within limits */
if (ringparam.rx_pending > ringparam.rx_max_pending)
@@ -213,23 +204,28 @@ int ethnl_set_rings(struct sk_buff *skb, struct genl_info *info)
else
err_attr = NULL;
if (err_attr) {
- ret = -EINVAL;
NL_SET_ERR_MSG_ATTR(info->extack, err_attr,
"requested ring size exceeds maximum");
- goto out_ops;
+ return -EINVAL;
}
ret = dev->ethtool_ops->set_ringparam(dev, &ringparam,
&kernel_ringparam, info->extack);
- if (ret < 0)
- goto out_ops;
- ethtool_notify(dev, ETHTOOL_MSG_RINGS_NTF, NULL);
-
-out_ops:
- ethnl_ops_complete(dev);
-out_rtnl:
- rtnl_unlock();
-out_dev:
- ethnl_parse_header_dev_put(&req_info);
- return ret;
+ return ret < 0 ? ret : 1;
}
+
+const struct ethnl_request_ops ethnl_rings_request_ops = {
+ .request_cmd = ETHTOOL_MSG_RINGS_GET,
+ .reply_cmd = ETHTOOL_MSG_RINGS_GET_REPLY,
+ .hdr_attr = ETHTOOL_A_RINGS_HEADER,
+ .req_info_size = sizeof(struct rings_req_info),
+ .reply_data_size = sizeof(struct rings_reply_data),
+
+ .prepare_data = rings_prepare_data,
+ .reply_size = rings_reply_size,
+ .fill_reply = rings_fill_reply,
+
+ .set_validate = ethnl_set_rings_validate,
+ .set = ethnl_set_rings,
+ .set_ntf_cmd = ETHTOOL_MSG_RINGS_NTF,
+};
generated by cgit v1.2.3 (git 2.39.0) at 2024-09-05 23:40:22 +0300