^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) #include "netlink.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) #include "common.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) #include "bitset.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) struct features_req_info {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) struct ethnl_req_info base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) struct features_reply_data {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) struct ethnl_reply_data base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) u32 hw[ETHTOOL_DEV_FEATURE_WORDS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) u32 wanted[ETHTOOL_DEV_FEATURE_WORDS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) u32 active[ETHTOOL_DEV_FEATURE_WORDS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) u32 nochange[ETHTOOL_DEV_FEATURE_WORDS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) u32 all[ETHTOOL_DEV_FEATURE_WORDS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #define FEATURES_REPDATA(__reply_base) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) container_of(__reply_base, struct features_reply_data, base)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) const struct nla_policy ethnl_features_get_policy[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) [ETHTOOL_A_FEATURES_HEADER] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) NLA_POLICY_NESTED(ethnl_header_policy),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) static void ethnl_features_to_bitmap32(u32 *dest, netdev_features_t src)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) unsigned int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) for (i = 0; i < ETHTOOL_DEV_FEATURE_WORDS; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) dest[i] = src >> (32 * i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) static int features_prepare_data(const struct ethnl_req_info *req_base,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) struct ethnl_reply_data *reply_base,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) struct genl_info *info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) struct features_reply_data *data = FEATURES_REPDATA(reply_base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) struct net_device *dev = reply_base->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) netdev_features_t all_features;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) ethnl_features_to_bitmap32(data->hw, dev->hw_features);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) ethnl_features_to_bitmap32(data->wanted, dev->wanted_features);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) ethnl_features_to_bitmap32(data->active, dev->features);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) ethnl_features_to_bitmap32(data->nochange, NETIF_F_NEVER_CHANGE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) all_features = GENMASK_ULL(NETDEV_FEATURE_COUNT - 1, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) ethnl_features_to_bitmap32(data->all, all_features);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) static int features_reply_size(const struct ethnl_req_info *req_base,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) const struct ethnl_reply_data *reply_base)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) const struct features_reply_data *data = FEATURES_REPDATA(reply_base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) unsigned int len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) ret = ethnl_bitset32_size(data->hw, data->all, NETDEV_FEATURE_COUNT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) netdev_features_strings, compact);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) len += ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) ret = ethnl_bitset32_size(data->wanted, NULL, NETDEV_FEATURE_COUNT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) netdev_features_strings, compact);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) len += ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) ret = ethnl_bitset32_size(data->active, NULL, NETDEV_FEATURE_COUNT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) netdev_features_strings, compact);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) len += ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) ret = ethnl_bitset32_size(data->nochange, NULL, NETDEV_FEATURE_COUNT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) netdev_features_strings, compact);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) len += ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) return len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) static int features_fill_reply(struct sk_buff *skb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) const struct ethnl_req_info *req_base,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) const struct ethnl_reply_data *reply_base)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) const struct features_reply_data *data = FEATURES_REPDATA(reply_base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) ret = ethnl_put_bitset32(skb, ETHTOOL_A_FEATURES_HW, data->hw,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) data->all, NETDEV_FEATURE_COUNT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) netdev_features_strings, compact);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) ret = ethnl_put_bitset32(skb, ETHTOOL_A_FEATURES_WANTED, data->wanted,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) NULL, NETDEV_FEATURE_COUNT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) netdev_features_strings, compact);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) ret = ethnl_put_bitset32(skb, ETHTOOL_A_FEATURES_ACTIVE, data->active,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) NULL, NETDEV_FEATURE_COUNT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) netdev_features_strings, compact);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) return ethnl_put_bitset32(skb, ETHTOOL_A_FEATURES_NOCHANGE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) data->nochange, NULL, NETDEV_FEATURE_COUNT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) netdev_features_strings, compact);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) const struct ethnl_request_ops ethnl_features_request_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) .request_cmd = ETHTOOL_MSG_FEATURES_GET,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) .reply_cmd = ETHTOOL_MSG_FEATURES_GET_REPLY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) .hdr_attr = ETHTOOL_A_FEATURES_HEADER,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) .req_info_size = sizeof(struct features_req_info),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) .reply_data_size = sizeof(struct features_reply_data),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) .prepare_data = features_prepare_data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) .reply_size = features_reply_size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) .fill_reply = features_fill_reply,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) /* FEATURES_SET */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) const struct nla_policy ethnl_features_set_policy[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) [ETHTOOL_A_FEATURES_HEADER] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) NLA_POLICY_NESTED(ethnl_header_policy),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) [ETHTOOL_A_FEATURES_WANTED] = { .type = NLA_NESTED },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) static void ethnl_features_to_bitmap(unsigned long *dest, netdev_features_t val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) const unsigned int words = BITS_TO_LONGS(NETDEV_FEATURE_COUNT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) unsigned int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) bitmap_zero(dest, NETDEV_FEATURE_COUNT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) for (i = 0; i < words; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) dest[i] = (unsigned long)(val >> (i * BITS_PER_LONG));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) static netdev_features_t ethnl_bitmap_to_features(unsigned long *src)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) const unsigned int nft_bits = sizeof(netdev_features_t) * BITS_PER_BYTE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) const unsigned int words = BITS_TO_LONGS(NETDEV_FEATURE_COUNT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) netdev_features_t ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) unsigned int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) for (i = 0; i < words; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) ret |= (netdev_features_t)(src[i]) << (i * BITS_PER_LONG);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) ret &= ~(netdev_features_t)0 >> (nft_bits - NETDEV_FEATURE_COUNT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) static int features_send_reply(struct net_device *dev, struct genl_info *info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) const unsigned long *wanted,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) const unsigned long *wanted_mask,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) const unsigned long *active,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) const unsigned long *active_mask, bool compact)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) struct sk_buff *rskb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) void *reply_payload;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) int reply_len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) reply_len = ethnl_reply_header_size();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) ret = ethnl_bitset_size(wanted, wanted_mask, NETDEV_FEATURE_COUNT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) netdev_features_strings, compact);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) reply_len += ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) ret = ethnl_bitset_size(active, active_mask, NETDEV_FEATURE_COUNT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) netdev_features_strings, compact);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) reply_len += ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) rskb = ethnl_reply_init(reply_len, dev, ETHTOOL_MSG_FEATURES_SET_REPLY,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) ETHTOOL_A_FEATURES_HEADER, info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) &reply_payload);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) if (!rskb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) ret = ethnl_put_bitset(rskb, ETHTOOL_A_FEATURES_WANTED, wanted,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) wanted_mask, NETDEV_FEATURE_COUNT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) netdev_features_strings, compact);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) goto nla_put_failure;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) ret = ethnl_put_bitset(rskb, ETHTOOL_A_FEATURES_ACTIVE, active,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) active_mask, NETDEV_FEATURE_COUNT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) netdev_features_strings, compact);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) goto nla_put_failure;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) genlmsg_end(rskb, reply_payload);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) ret = genlmsg_reply(rskb, info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) nla_put_failure:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) nlmsg_free(rskb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) WARN_ONCE(1, "calculated message payload length (%d) not sufficient\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) reply_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) err:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) GENL_SET_ERR_MSG(info, "failed to send reply message");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) int ethnl_set_features(struct sk_buff *skb, struct genl_info *info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) DECLARE_BITMAP(wanted_diff_mask, NETDEV_FEATURE_COUNT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) DECLARE_BITMAP(active_diff_mask, NETDEV_FEATURE_COUNT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) DECLARE_BITMAP(old_active, NETDEV_FEATURE_COUNT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) DECLARE_BITMAP(old_wanted, NETDEV_FEATURE_COUNT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) DECLARE_BITMAP(new_active, NETDEV_FEATURE_COUNT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) DECLARE_BITMAP(new_wanted, NETDEV_FEATURE_COUNT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) DECLARE_BITMAP(req_wanted, NETDEV_FEATURE_COUNT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) DECLARE_BITMAP(req_mask, NETDEV_FEATURE_COUNT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) struct ethnl_req_info req_info = {};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) struct nlattr **tb = info->attrs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) struct net_device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) bool mod;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) if (!tb[ETHTOOL_A_FEATURES_WANTED])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) ret = ethnl_parse_header_dev_get(&req_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) tb[ETHTOOL_A_FEATURES_HEADER],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) genl_info_net(info), info->extack,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) dev = req_info.dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) rtnl_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) ethnl_features_to_bitmap(old_active, dev->features);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) ethnl_features_to_bitmap(old_wanted, dev->wanted_features);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) ret = ethnl_parse_bitset(req_wanted, req_mask, NETDEV_FEATURE_COUNT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) tb[ETHTOOL_A_FEATURES_WANTED],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) netdev_features_strings, info->extack);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) goto out_rtnl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) if (ethnl_bitmap_to_features(req_mask) & ~NETIF_F_ETHTOOL_BITS) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) GENL_SET_ERR_MSG(info, "attempt to change non-ethtool features");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) goto out_rtnl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) /* set req_wanted bits not in req_mask from old_wanted */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) bitmap_and(req_wanted, req_wanted, req_mask, NETDEV_FEATURE_COUNT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) bitmap_andnot(new_wanted, old_wanted, req_mask, NETDEV_FEATURE_COUNT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) bitmap_or(req_wanted, new_wanted, req_wanted, NETDEV_FEATURE_COUNT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) if (!bitmap_equal(req_wanted, old_wanted, NETDEV_FEATURE_COUNT)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) dev->wanted_features &= ~dev->hw_features;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) dev->wanted_features |= ethnl_bitmap_to_features(req_wanted) & dev->hw_features;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) __netdev_update_features(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) ethnl_features_to_bitmap(new_active, dev->features);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) mod = !bitmap_equal(old_active, new_active, NETDEV_FEATURE_COUNT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) if (!(req_info.flags & ETHTOOL_FLAG_OMIT_REPLY)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) bool compact = req_info.flags & ETHTOOL_FLAG_COMPACT_BITSETS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) bitmap_xor(wanted_diff_mask, req_wanted, new_active,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) NETDEV_FEATURE_COUNT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) bitmap_xor(active_diff_mask, old_active, new_active,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) NETDEV_FEATURE_COUNT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) bitmap_and(wanted_diff_mask, wanted_diff_mask, req_mask,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) NETDEV_FEATURE_COUNT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) bitmap_and(req_wanted, req_wanted, wanted_diff_mask,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) NETDEV_FEATURE_COUNT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) bitmap_and(new_active, new_active, active_diff_mask,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) NETDEV_FEATURE_COUNT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) ret = features_send_reply(dev, info, req_wanted,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) wanted_diff_mask, new_active,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) active_diff_mask, compact);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) if (mod)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) netdev_features_change(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) out_rtnl:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) rtnl_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) dev_put(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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