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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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132 lines
4.1 KiB
C
132 lines
4.1 KiB
C
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// 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 features_req_info {
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struct ethnl_req_info base;
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};
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struct features_reply_data {
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struct ethnl_reply_data base;
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u32 hw[ETHTOOL_DEV_FEATURE_WORDS];
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u32 wanted[ETHTOOL_DEV_FEATURE_WORDS];
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u32 active[ETHTOOL_DEV_FEATURE_WORDS];
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u32 nochange[ETHTOOL_DEV_FEATURE_WORDS];
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u32 all[ETHTOOL_DEV_FEATURE_WORDS];
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};
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#define FEATURES_REPDATA(__reply_base) \
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container_of(__reply_base, struct features_reply_data, base)
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static const struct nla_policy
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features_get_policy[ETHTOOL_A_FEATURES_MAX + 1] = {
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[ETHTOOL_A_FEATURES_UNSPEC] = { .type = NLA_REJECT },
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[ETHTOOL_A_FEATURES_HEADER] = { .type = NLA_NESTED },
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[ETHTOOL_A_FEATURES_HW] = { .type = NLA_REJECT },
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[ETHTOOL_A_FEATURES_WANTED] = { .type = NLA_REJECT },
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[ETHTOOL_A_FEATURES_ACTIVE] = { .type = NLA_REJECT },
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[ETHTOOL_A_FEATURES_NOCHANGE] = { .type = NLA_REJECT },
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};
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static void ethnl_features_to_bitmap32(u32 *dest, netdev_features_t src)
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{
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unsigned int i;
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for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; i++)
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dest[i] = src >> (32 * i);
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}
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static int features_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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struct features_reply_data *data = FEATURES_REPDATA(reply_base);
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struct net_device *dev = reply_base->dev;
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netdev_features_t all_features;
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ethnl_features_to_bitmap32(data->hw, dev->hw_features);
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ethnl_features_to_bitmap32(data->wanted, dev->wanted_features);
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ethnl_features_to_bitmap32(data->active, dev->features);
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ethnl_features_to_bitmap32(data->nochange, NETIF_F_NEVER_CHANGE);
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all_features = GENMASK_ULL(NETDEV_FEATURE_COUNT - 1, 0);
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ethnl_features_to_bitmap32(data->all, all_features);
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return 0;
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}
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static int features_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 features_reply_data *data = FEATURES_REPDATA(reply_base);
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bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS;
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unsigned int len = 0;
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int ret;
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ret = ethnl_bitset32_size(data->hw, data->all, NETDEV_FEATURE_COUNT,
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netdev_features_strings, compact);
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if (ret < 0)
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return ret;
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len += ret;
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ret = ethnl_bitset32_size(data->wanted, NULL, NETDEV_FEATURE_COUNT,
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netdev_features_strings, compact);
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if (ret < 0)
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return ret;
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len += ret;
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ret = ethnl_bitset32_size(data->active, NULL, NETDEV_FEATURE_COUNT,
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netdev_features_strings, compact);
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if (ret < 0)
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return ret;
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len += ret;
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ret = ethnl_bitset32_size(data->nochange, NULL, NETDEV_FEATURE_COUNT,
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netdev_features_strings, compact);
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if (ret < 0)
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return ret;
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len += ret;
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return len;
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}
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static int features_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 features_reply_data *data = FEATURES_REPDATA(reply_base);
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bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS;
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int ret;
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ret = ethnl_put_bitset32(skb, ETHTOOL_A_FEATURES_HW, data->hw,
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data->all, NETDEV_FEATURE_COUNT,
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netdev_features_strings, compact);
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if (ret < 0)
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return ret;
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ret = ethnl_put_bitset32(skb, ETHTOOL_A_FEATURES_WANTED, data->wanted,
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NULL, NETDEV_FEATURE_COUNT,
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netdev_features_strings, compact);
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if (ret < 0)
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return ret;
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ret = ethnl_put_bitset32(skb, ETHTOOL_A_FEATURES_ACTIVE, data->active,
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NULL, NETDEV_FEATURE_COUNT,
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netdev_features_strings, compact);
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if (ret < 0)
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return ret;
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return ethnl_put_bitset32(skb, ETHTOOL_A_FEATURES_NOCHANGE,
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data->nochange, NULL, NETDEV_FEATURE_COUNT,
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netdev_features_strings, compact);
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}
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const struct ethnl_request_ops ethnl_features_request_ops = {
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.request_cmd = ETHTOOL_MSG_FEATURES_GET,
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.reply_cmd = ETHTOOL_MSG_FEATURES_GET_REPLY,
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.hdr_attr = ETHTOOL_A_FEATURES_HEADER,
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.max_attr = ETHTOOL_A_FEATURES_MAX,
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.req_info_size = sizeof(struct features_req_info),
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.reply_data_size = sizeof(struct features_reply_data),
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.request_policy = features_get_policy,
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.prepare_data = features_prepare_data,
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.reply_size = features_reply_size,
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.fill_reply = features_fill_reply,
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};
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