mirror of
https://github.com/torvalds/linux.git
synced 2024-12-13 14:43:03 +00:00
f946270d05
We had a number of bugs in the past because developers forgot to fully test dumps, which pass NULL as info to .prepare_data. .prepare_data implementations would try to access info->extack leading to a null-deref. Now that dumps and notifications can access struct genl_info we can pass it in, and remove the info null checks. Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com> Tested-by: Vladimir Oltean <vladimir.oltean@nxp.com> # pause Reviewed-by: Jiri Pirko <jiri@nvidia.com> Link: https://lore.kernel.org/r/20230814214723.2924989-11-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
137 lines
3.7 KiB
C
137 lines
3.7 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
|
|
#include <linux/net_tstamp.h>
|
|
|
|
#include "netlink.h"
|
|
#include "common.h"
|
|
#include "bitset.h"
|
|
|
|
struct tsinfo_req_info {
|
|
struct ethnl_req_info base;
|
|
};
|
|
|
|
struct tsinfo_reply_data {
|
|
struct ethnl_reply_data base;
|
|
struct ethtool_ts_info ts_info;
|
|
};
|
|
|
|
#define TSINFO_REPDATA(__reply_base) \
|
|
container_of(__reply_base, struct tsinfo_reply_data, base)
|
|
|
|
const struct nla_policy ethnl_tsinfo_get_policy[] = {
|
|
[ETHTOOL_A_TSINFO_HEADER] =
|
|
NLA_POLICY_NESTED(ethnl_header_policy),
|
|
};
|
|
|
|
static int tsinfo_prepare_data(const struct ethnl_req_info *req_base,
|
|
struct ethnl_reply_data *reply_base,
|
|
const struct genl_info *info)
|
|
{
|
|
struct tsinfo_reply_data *data = TSINFO_REPDATA(reply_base);
|
|
struct net_device *dev = reply_base->dev;
|
|
int ret;
|
|
|
|
ret = ethnl_ops_begin(dev);
|
|
if (ret < 0)
|
|
return ret;
|
|
ret = __ethtool_get_ts_info(dev, &data->ts_info);
|
|
ethnl_ops_complete(dev);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int tsinfo_reply_size(const struct ethnl_req_info *req_base,
|
|
const struct ethnl_reply_data *reply_base)
|
|
{
|
|
const struct tsinfo_reply_data *data = TSINFO_REPDATA(reply_base);
|
|
bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS;
|
|
const struct ethtool_ts_info *ts_info = &data->ts_info;
|
|
int len = 0;
|
|
int ret;
|
|
|
|
BUILD_BUG_ON(__SOF_TIMESTAMPING_CNT > 32);
|
|
BUILD_BUG_ON(__HWTSTAMP_TX_CNT > 32);
|
|
BUILD_BUG_ON(__HWTSTAMP_FILTER_CNT > 32);
|
|
|
|
if (ts_info->so_timestamping) {
|
|
ret = ethnl_bitset32_size(&ts_info->so_timestamping, NULL,
|
|
__SOF_TIMESTAMPING_CNT,
|
|
sof_timestamping_names, compact);
|
|
if (ret < 0)
|
|
return ret;
|
|
len += ret; /* _TSINFO_TIMESTAMPING */
|
|
}
|
|
if (ts_info->tx_types) {
|
|
ret = ethnl_bitset32_size(&ts_info->tx_types, NULL,
|
|
__HWTSTAMP_TX_CNT,
|
|
ts_tx_type_names, compact);
|
|
if (ret < 0)
|
|
return ret;
|
|
len += ret; /* _TSINFO_TX_TYPES */
|
|
}
|
|
if (ts_info->rx_filters) {
|
|
ret = ethnl_bitset32_size(&ts_info->rx_filters, NULL,
|
|
__HWTSTAMP_FILTER_CNT,
|
|
ts_rx_filter_names, compact);
|
|
if (ret < 0)
|
|
return ret;
|
|
len += ret; /* _TSINFO_RX_FILTERS */
|
|
}
|
|
if (ts_info->phc_index >= 0)
|
|
len += nla_total_size(sizeof(u32)); /* _TSINFO_PHC_INDEX */
|
|
|
|
return len;
|
|
}
|
|
|
|
static int tsinfo_fill_reply(struct sk_buff *skb,
|
|
const struct ethnl_req_info *req_base,
|
|
const struct ethnl_reply_data *reply_base)
|
|
{
|
|
const struct tsinfo_reply_data *data = TSINFO_REPDATA(reply_base);
|
|
bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS;
|
|
const struct ethtool_ts_info *ts_info = &data->ts_info;
|
|
int ret;
|
|
|
|
if (ts_info->so_timestamping) {
|
|
ret = ethnl_put_bitset32(skb, ETHTOOL_A_TSINFO_TIMESTAMPING,
|
|
&ts_info->so_timestamping, NULL,
|
|
__SOF_TIMESTAMPING_CNT,
|
|
sof_timestamping_names, compact);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
if (ts_info->tx_types) {
|
|
ret = ethnl_put_bitset32(skb, ETHTOOL_A_TSINFO_TX_TYPES,
|
|
&ts_info->tx_types, NULL,
|
|
__HWTSTAMP_TX_CNT,
|
|
ts_tx_type_names, compact);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
if (ts_info->rx_filters) {
|
|
ret = ethnl_put_bitset32(skb, ETHTOOL_A_TSINFO_RX_FILTERS,
|
|
&ts_info->rx_filters, NULL,
|
|
__HWTSTAMP_FILTER_CNT,
|
|
ts_rx_filter_names, compact);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
if (ts_info->phc_index >= 0 &&
|
|
nla_put_u32(skb, ETHTOOL_A_TSINFO_PHC_INDEX, ts_info->phc_index))
|
|
return -EMSGSIZE;
|
|
|
|
return 0;
|
|
}
|
|
|
|
const struct ethnl_request_ops ethnl_tsinfo_request_ops = {
|
|
.request_cmd = ETHTOOL_MSG_TSINFO_GET,
|
|
.reply_cmd = ETHTOOL_MSG_TSINFO_GET_REPLY,
|
|
.hdr_attr = ETHTOOL_A_TSINFO_HEADER,
|
|
.req_info_size = sizeof(struct tsinfo_req_info),
|
|
.reply_data_size = sizeof(struct tsinfo_reply_data),
|
|
|
|
.prepare_data = tsinfo_prepare_data,
|
|
.reply_size = tsinfo_reply_size,
|
|
.fill_reply = tsinfo_fill_reply,
|
|
};
|