mirror of
https://github.com/edk2-porting/linux-next.git
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812ad3d270
In preparation for FORTIFY_SOURCE performing compile-time and run-time field bounds checking for memset(), avoid intentionally writing across neighboring fields. Add struct_group() to mark region of struct stats_reply_data that should be initialized, which can now be done in a single memset() call. Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: David S. Miller <davem@davemloft.net>
413 lines
14 KiB
C
413 lines
14 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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#include "netlink.h"
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#include "common.h"
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#include "bitset.h"
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struct stats_req_info {
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struct ethnl_req_info base;
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DECLARE_BITMAP(stat_mask, __ETHTOOL_STATS_CNT);
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};
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#define STATS_REQINFO(__req_base) \
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container_of(__req_base, struct stats_req_info, base)
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struct stats_reply_data {
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struct ethnl_reply_data base;
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struct_group(stats,
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struct ethtool_eth_phy_stats phy_stats;
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struct ethtool_eth_mac_stats mac_stats;
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struct ethtool_eth_ctrl_stats ctrl_stats;
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struct ethtool_rmon_stats rmon_stats;
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);
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const struct ethtool_rmon_hist_range *rmon_ranges;
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};
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#define STATS_REPDATA(__reply_base) \
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container_of(__reply_base, struct stats_reply_data, base)
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const char stats_std_names[__ETHTOOL_STATS_CNT][ETH_GSTRING_LEN] = {
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[ETHTOOL_STATS_ETH_PHY] = "eth-phy",
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[ETHTOOL_STATS_ETH_MAC] = "eth-mac",
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[ETHTOOL_STATS_ETH_CTRL] = "eth-ctrl",
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[ETHTOOL_STATS_RMON] = "rmon",
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};
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const char stats_eth_phy_names[__ETHTOOL_A_STATS_ETH_PHY_CNT][ETH_GSTRING_LEN] = {
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[ETHTOOL_A_STATS_ETH_PHY_5_SYM_ERR] = "SymbolErrorDuringCarrier",
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};
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const char stats_eth_mac_names[__ETHTOOL_A_STATS_ETH_MAC_CNT][ETH_GSTRING_LEN] = {
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[ETHTOOL_A_STATS_ETH_MAC_2_TX_PKT] = "FramesTransmittedOK",
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[ETHTOOL_A_STATS_ETH_MAC_3_SINGLE_COL] = "SingleCollisionFrames",
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[ETHTOOL_A_STATS_ETH_MAC_4_MULTI_COL] = "MultipleCollisionFrames",
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[ETHTOOL_A_STATS_ETH_MAC_5_RX_PKT] = "FramesReceivedOK",
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[ETHTOOL_A_STATS_ETH_MAC_6_FCS_ERR] = "FrameCheckSequenceErrors",
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[ETHTOOL_A_STATS_ETH_MAC_7_ALIGN_ERR] = "AlignmentErrors",
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[ETHTOOL_A_STATS_ETH_MAC_8_TX_BYTES] = "OctetsTransmittedOK",
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[ETHTOOL_A_STATS_ETH_MAC_9_TX_DEFER] = "FramesWithDeferredXmissions",
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[ETHTOOL_A_STATS_ETH_MAC_10_LATE_COL] = "LateCollisions",
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[ETHTOOL_A_STATS_ETH_MAC_11_XS_COL] = "FramesAbortedDueToXSColls",
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[ETHTOOL_A_STATS_ETH_MAC_12_TX_INT_ERR] = "FramesLostDueToIntMACXmitError",
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[ETHTOOL_A_STATS_ETH_MAC_13_CS_ERR] = "CarrierSenseErrors",
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[ETHTOOL_A_STATS_ETH_MAC_14_RX_BYTES] = "OctetsReceivedOK",
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[ETHTOOL_A_STATS_ETH_MAC_15_RX_INT_ERR] = "FramesLostDueToIntMACRcvError",
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[ETHTOOL_A_STATS_ETH_MAC_18_TX_MCAST] = "MulticastFramesXmittedOK",
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[ETHTOOL_A_STATS_ETH_MAC_19_TX_BCAST] = "BroadcastFramesXmittedOK",
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[ETHTOOL_A_STATS_ETH_MAC_20_XS_DEFER] = "FramesWithExcessiveDeferral",
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[ETHTOOL_A_STATS_ETH_MAC_21_RX_MCAST] = "MulticastFramesReceivedOK",
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[ETHTOOL_A_STATS_ETH_MAC_22_RX_BCAST] = "BroadcastFramesReceivedOK",
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[ETHTOOL_A_STATS_ETH_MAC_23_IR_LEN_ERR] = "InRangeLengthErrors",
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[ETHTOOL_A_STATS_ETH_MAC_24_OOR_LEN] = "OutOfRangeLengthField",
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[ETHTOOL_A_STATS_ETH_MAC_25_TOO_LONG_ERR] = "FrameTooLongErrors",
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};
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const char stats_eth_ctrl_names[__ETHTOOL_A_STATS_ETH_CTRL_CNT][ETH_GSTRING_LEN] = {
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[ETHTOOL_A_STATS_ETH_CTRL_3_TX] = "MACControlFramesTransmitted",
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[ETHTOOL_A_STATS_ETH_CTRL_4_RX] = "MACControlFramesReceived",
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[ETHTOOL_A_STATS_ETH_CTRL_5_RX_UNSUP] = "UnsupportedOpcodesReceived",
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};
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const char stats_rmon_names[__ETHTOOL_A_STATS_RMON_CNT][ETH_GSTRING_LEN] = {
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[ETHTOOL_A_STATS_RMON_UNDERSIZE] = "etherStatsUndersizePkts",
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[ETHTOOL_A_STATS_RMON_OVERSIZE] = "etherStatsOversizePkts",
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[ETHTOOL_A_STATS_RMON_FRAG] = "etherStatsFragments",
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[ETHTOOL_A_STATS_RMON_JABBER] = "etherStatsJabbers",
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};
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const struct nla_policy ethnl_stats_get_policy[ETHTOOL_A_STATS_GROUPS + 1] = {
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[ETHTOOL_A_STATS_HEADER] =
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NLA_POLICY_NESTED(ethnl_header_policy),
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[ETHTOOL_A_STATS_GROUPS] = { .type = NLA_NESTED },
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};
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static int stats_parse_request(struct ethnl_req_info *req_base,
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struct nlattr **tb,
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struct netlink_ext_ack *extack)
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{
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struct stats_req_info *req_info = STATS_REQINFO(req_base);
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bool mod = false;
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int err;
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err = ethnl_update_bitset(req_info->stat_mask, __ETHTOOL_STATS_CNT,
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tb[ETHTOOL_A_STATS_GROUPS], stats_std_names,
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extack, &mod);
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if (err)
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return err;
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if (!mod) {
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NL_SET_ERR_MSG(extack, "no stats requested");
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return -EINVAL;
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}
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return 0;
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}
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static int stats_prepare_data(const struct ethnl_req_info *req_base,
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struct ethnl_reply_data *reply_base,
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struct genl_info *info)
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{
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const struct stats_req_info *req_info = STATS_REQINFO(req_base);
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struct stats_reply_data *data = STATS_REPDATA(reply_base);
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struct net_device *dev = reply_base->dev;
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int ret;
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ret = ethnl_ops_begin(dev);
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if (ret < 0)
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return ret;
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/* Mark all stats as unset (see ETHTOOL_STAT_NOT_SET) to prevent them
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* from being reported to user space in case driver did not set them.
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*/
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memset(&data->stats, 0xff, sizeof(data->stats));
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if (test_bit(ETHTOOL_STATS_ETH_PHY, req_info->stat_mask) &&
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dev->ethtool_ops->get_eth_phy_stats)
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dev->ethtool_ops->get_eth_phy_stats(dev, &data->phy_stats);
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if (test_bit(ETHTOOL_STATS_ETH_MAC, req_info->stat_mask) &&
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dev->ethtool_ops->get_eth_mac_stats)
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dev->ethtool_ops->get_eth_mac_stats(dev, &data->mac_stats);
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if (test_bit(ETHTOOL_STATS_ETH_CTRL, req_info->stat_mask) &&
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dev->ethtool_ops->get_eth_ctrl_stats)
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dev->ethtool_ops->get_eth_ctrl_stats(dev, &data->ctrl_stats);
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if (test_bit(ETHTOOL_STATS_RMON, req_info->stat_mask) &&
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dev->ethtool_ops->get_rmon_stats)
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dev->ethtool_ops->get_rmon_stats(dev, &data->rmon_stats,
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&data->rmon_ranges);
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ethnl_ops_complete(dev);
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return 0;
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}
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static int stats_reply_size(const struct ethnl_req_info *req_base,
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const struct ethnl_reply_data *reply_base)
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{
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const struct stats_req_info *req_info = STATS_REQINFO(req_base);
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unsigned int n_grps = 0, n_stats = 0;
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int len = 0;
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if (test_bit(ETHTOOL_STATS_ETH_PHY, req_info->stat_mask)) {
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n_stats += sizeof(struct ethtool_eth_phy_stats) / sizeof(u64);
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n_grps++;
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}
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if (test_bit(ETHTOOL_STATS_ETH_MAC, req_info->stat_mask)) {
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n_stats += sizeof(struct ethtool_eth_mac_stats) / sizeof(u64);
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n_grps++;
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}
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if (test_bit(ETHTOOL_STATS_ETH_CTRL, req_info->stat_mask)) {
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n_stats += sizeof(struct ethtool_eth_ctrl_stats) / sizeof(u64);
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n_grps++;
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}
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if (test_bit(ETHTOOL_STATS_RMON, req_info->stat_mask)) {
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n_stats += sizeof(struct ethtool_rmon_stats) / sizeof(u64);
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n_grps++;
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/* Above includes the space for _A_STATS_GRP_HIST_VALs */
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len += (nla_total_size(0) + /* _A_STATS_GRP_HIST */
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nla_total_size(4) + /* _A_STATS_GRP_HIST_BKT_LOW */
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nla_total_size(4)) * /* _A_STATS_GRP_HIST_BKT_HI */
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ETHTOOL_RMON_HIST_MAX * 2;
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}
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len += n_grps * (nla_total_size(0) + /* _A_STATS_GRP */
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nla_total_size(4) + /* _A_STATS_GRP_ID */
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nla_total_size(4)); /* _A_STATS_GRP_SS_ID */
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len += n_stats * (nla_total_size(0) + /* _A_STATS_GRP_STAT */
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nla_total_size_64bit(sizeof(u64)));
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return len;
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}
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static int stat_put(struct sk_buff *skb, u16 attrtype, u64 val)
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{
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struct nlattr *nest;
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int ret;
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if (val == ETHTOOL_STAT_NOT_SET)
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return 0;
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/* We want to start stats attr types from 0, so we don't have a type
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* for pad inside ETHTOOL_A_STATS_GRP_STAT. Pad things on the outside
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* of ETHTOOL_A_STATS_GRP_STAT. Since we're one nest away from the
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* actual attr we're 4B off - nla_need_padding_for_64bit() & co.
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* can't be used.
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*/
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#ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
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if (!IS_ALIGNED((unsigned long)skb_tail_pointer(skb), 8))
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if (!nla_reserve(skb, ETHTOOL_A_STATS_GRP_PAD, 0))
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return -EMSGSIZE;
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#endif
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nest = nla_nest_start(skb, ETHTOOL_A_STATS_GRP_STAT);
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if (!nest)
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return -EMSGSIZE;
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ret = nla_put_u64_64bit(skb, attrtype, val, -1 /* not used */);
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if (ret) {
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nla_nest_cancel(skb, nest);
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return ret;
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}
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nla_nest_end(skb, nest);
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return 0;
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}
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static int stats_put_phy_stats(struct sk_buff *skb,
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const struct stats_reply_data *data)
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{
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if (stat_put(skb, ETHTOOL_A_STATS_ETH_PHY_5_SYM_ERR,
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data->phy_stats.SymbolErrorDuringCarrier))
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return -EMSGSIZE;
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return 0;
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}
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static int stats_put_mac_stats(struct sk_buff *skb,
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const struct stats_reply_data *data)
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{
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if (stat_put(skb, ETHTOOL_A_STATS_ETH_MAC_2_TX_PKT,
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data->mac_stats.FramesTransmittedOK) ||
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stat_put(skb, ETHTOOL_A_STATS_ETH_MAC_3_SINGLE_COL,
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data->mac_stats.SingleCollisionFrames) ||
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stat_put(skb, ETHTOOL_A_STATS_ETH_MAC_4_MULTI_COL,
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data->mac_stats.MultipleCollisionFrames) ||
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stat_put(skb, ETHTOOL_A_STATS_ETH_MAC_5_RX_PKT,
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data->mac_stats.FramesReceivedOK) ||
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stat_put(skb, ETHTOOL_A_STATS_ETH_MAC_6_FCS_ERR,
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data->mac_stats.FrameCheckSequenceErrors) ||
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stat_put(skb, ETHTOOL_A_STATS_ETH_MAC_7_ALIGN_ERR,
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data->mac_stats.AlignmentErrors) ||
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stat_put(skb, ETHTOOL_A_STATS_ETH_MAC_8_TX_BYTES,
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data->mac_stats.OctetsTransmittedOK) ||
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stat_put(skb, ETHTOOL_A_STATS_ETH_MAC_9_TX_DEFER,
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data->mac_stats.FramesWithDeferredXmissions) ||
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stat_put(skb, ETHTOOL_A_STATS_ETH_MAC_10_LATE_COL,
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data->mac_stats.LateCollisions) ||
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stat_put(skb, ETHTOOL_A_STATS_ETH_MAC_11_XS_COL,
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data->mac_stats.FramesAbortedDueToXSColls) ||
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stat_put(skb, ETHTOOL_A_STATS_ETH_MAC_12_TX_INT_ERR,
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data->mac_stats.FramesLostDueToIntMACXmitError) ||
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stat_put(skb, ETHTOOL_A_STATS_ETH_MAC_13_CS_ERR,
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data->mac_stats.CarrierSenseErrors) ||
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stat_put(skb, ETHTOOL_A_STATS_ETH_MAC_14_RX_BYTES,
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data->mac_stats.OctetsReceivedOK) ||
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stat_put(skb, ETHTOOL_A_STATS_ETH_MAC_15_RX_INT_ERR,
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data->mac_stats.FramesLostDueToIntMACRcvError) ||
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stat_put(skb, ETHTOOL_A_STATS_ETH_MAC_18_TX_MCAST,
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data->mac_stats.MulticastFramesXmittedOK) ||
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stat_put(skb, ETHTOOL_A_STATS_ETH_MAC_19_TX_BCAST,
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data->mac_stats.BroadcastFramesXmittedOK) ||
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stat_put(skb, ETHTOOL_A_STATS_ETH_MAC_20_XS_DEFER,
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data->mac_stats.FramesWithExcessiveDeferral) ||
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stat_put(skb, ETHTOOL_A_STATS_ETH_MAC_21_RX_MCAST,
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data->mac_stats.MulticastFramesReceivedOK) ||
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stat_put(skb, ETHTOOL_A_STATS_ETH_MAC_22_RX_BCAST,
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data->mac_stats.BroadcastFramesReceivedOK) ||
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stat_put(skb, ETHTOOL_A_STATS_ETH_MAC_23_IR_LEN_ERR,
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data->mac_stats.InRangeLengthErrors) ||
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stat_put(skb, ETHTOOL_A_STATS_ETH_MAC_24_OOR_LEN,
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data->mac_stats.OutOfRangeLengthField) ||
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stat_put(skb, ETHTOOL_A_STATS_ETH_MAC_25_TOO_LONG_ERR,
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data->mac_stats.FrameTooLongErrors))
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return -EMSGSIZE;
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return 0;
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}
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static int stats_put_ctrl_stats(struct sk_buff *skb,
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const struct stats_reply_data *data)
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{
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if (stat_put(skb, ETHTOOL_A_STATS_ETH_CTRL_3_TX,
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data->ctrl_stats.MACControlFramesTransmitted) ||
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stat_put(skb, ETHTOOL_A_STATS_ETH_CTRL_4_RX,
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data->ctrl_stats.MACControlFramesReceived) ||
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stat_put(skb, ETHTOOL_A_STATS_ETH_CTRL_5_RX_UNSUP,
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data->ctrl_stats.UnsupportedOpcodesReceived))
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return -EMSGSIZE;
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return 0;
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}
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static int stats_put_rmon_hist(struct sk_buff *skb, u32 attr, const u64 *hist,
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const struct ethtool_rmon_hist_range *ranges)
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{
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struct nlattr *nest;
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int i;
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if (!ranges)
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return 0;
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for (i = 0; i < ETHTOOL_RMON_HIST_MAX; i++) {
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if (!ranges[i].low && !ranges[i].high)
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break;
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if (hist[i] == ETHTOOL_STAT_NOT_SET)
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continue;
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nest = nla_nest_start(skb, attr);
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if (!nest)
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return -EMSGSIZE;
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if (nla_put_u32(skb, ETHTOOL_A_STATS_GRP_HIST_BKT_LOW,
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ranges[i].low) ||
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nla_put_u32(skb, ETHTOOL_A_STATS_GRP_HIST_BKT_HI,
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ranges[i].high) ||
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nla_put_u64_64bit(skb, ETHTOOL_A_STATS_GRP_HIST_VAL,
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hist[i], ETHTOOL_A_STATS_GRP_PAD))
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goto err_cancel_hist;
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nla_nest_end(skb, nest);
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}
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return 0;
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err_cancel_hist:
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nla_nest_cancel(skb, nest);
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return -EMSGSIZE;
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}
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static int stats_put_rmon_stats(struct sk_buff *skb,
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const struct stats_reply_data *data)
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{
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if (stats_put_rmon_hist(skb, ETHTOOL_A_STATS_GRP_HIST_RX,
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data->rmon_stats.hist, data->rmon_ranges) ||
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stats_put_rmon_hist(skb, ETHTOOL_A_STATS_GRP_HIST_TX,
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data->rmon_stats.hist_tx, data->rmon_ranges))
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return -EMSGSIZE;
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if (stat_put(skb, ETHTOOL_A_STATS_RMON_UNDERSIZE,
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data->rmon_stats.undersize_pkts) ||
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stat_put(skb, ETHTOOL_A_STATS_RMON_OVERSIZE,
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data->rmon_stats.oversize_pkts) ||
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stat_put(skb, ETHTOOL_A_STATS_RMON_FRAG,
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data->rmon_stats.fragments) ||
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stat_put(skb, ETHTOOL_A_STATS_RMON_JABBER,
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data->rmon_stats.jabbers))
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return -EMSGSIZE;
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return 0;
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}
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static int stats_put_stats(struct sk_buff *skb,
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const struct stats_reply_data *data,
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u32 id, u32 ss_id,
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int (*cb)(struct sk_buff *skb,
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const struct stats_reply_data *data))
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{
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struct nlattr *nest;
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nest = nla_nest_start(skb, ETHTOOL_A_STATS_GRP);
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if (!nest)
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return -EMSGSIZE;
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if (nla_put_u32(skb, ETHTOOL_A_STATS_GRP_ID, id) ||
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nla_put_u32(skb, ETHTOOL_A_STATS_GRP_SS_ID, ss_id))
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goto err_cancel;
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if (cb(skb, data))
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goto err_cancel;
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nla_nest_end(skb, nest);
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return 0;
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err_cancel:
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nla_nest_cancel(skb, nest);
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return -EMSGSIZE;
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}
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static int stats_fill_reply(struct sk_buff *skb,
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const struct ethnl_req_info *req_base,
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const struct ethnl_reply_data *reply_base)
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{
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const struct stats_req_info *req_info = STATS_REQINFO(req_base);
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const struct stats_reply_data *data = STATS_REPDATA(reply_base);
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int ret = 0;
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if (!ret && test_bit(ETHTOOL_STATS_ETH_PHY, req_info->stat_mask))
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ret = stats_put_stats(skb, data, ETHTOOL_STATS_ETH_PHY,
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ETH_SS_STATS_ETH_PHY,
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stats_put_phy_stats);
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if (!ret && test_bit(ETHTOOL_STATS_ETH_MAC, req_info->stat_mask))
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ret = stats_put_stats(skb, data, ETHTOOL_STATS_ETH_MAC,
|
|
ETH_SS_STATS_ETH_MAC,
|
|
stats_put_mac_stats);
|
|
if (!ret && test_bit(ETHTOOL_STATS_ETH_CTRL, req_info->stat_mask))
|
|
ret = stats_put_stats(skb, data, ETHTOOL_STATS_ETH_CTRL,
|
|
ETH_SS_STATS_ETH_CTRL,
|
|
stats_put_ctrl_stats);
|
|
if (!ret && test_bit(ETHTOOL_STATS_RMON, req_info->stat_mask))
|
|
ret = stats_put_stats(skb, data, ETHTOOL_STATS_RMON,
|
|
ETH_SS_STATS_RMON, stats_put_rmon_stats);
|
|
|
|
return ret;
|
|
}
|
|
|
|
const struct ethnl_request_ops ethnl_stats_request_ops = {
|
|
.request_cmd = ETHTOOL_MSG_STATS_GET,
|
|
.reply_cmd = ETHTOOL_MSG_STATS_GET_REPLY,
|
|
.hdr_attr = ETHTOOL_A_STATS_HEADER,
|
|
.req_info_size = sizeof(struct stats_req_info),
|
|
.reply_data_size = sizeof(struct stats_reply_data),
|
|
|
|
.parse_request = stats_parse_request,
|
|
.prepare_data = stats_prepare_data,
|
|
.reply_size = stats_reply_size,
|
|
.fill_reply = stats_fill_reply,
|
|
};
|