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310 lines
8.1 KiB
310 lines
8.1 KiB
// 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 fec_req_info { |
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struct ethnl_req_info base; |
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}; |
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struct fec_reply_data { |
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struct ethnl_reply_data base; |
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__ETHTOOL_DECLARE_LINK_MODE_MASK(fec_link_modes); |
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u32 active_fec; |
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u8 fec_auto; |
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struct fec_stat_grp { |
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u64 stats[1 + ETHTOOL_MAX_LANES]; |
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u8 cnt; |
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} corr, uncorr, corr_bits; |
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}; |
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#define FEC_REPDATA(__reply_base) \ |
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container_of(__reply_base, struct fec_reply_data, base) |
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#define ETHTOOL_FEC_MASK ((ETHTOOL_FEC_LLRS << 1) - 1) |
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const struct nla_policy ethnl_fec_get_policy[ETHTOOL_A_FEC_HEADER + 1] = { |
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[ETHTOOL_A_FEC_HEADER] = NLA_POLICY_NESTED(ethnl_header_policy_stats), |
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}; |
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static void |
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ethtool_fec_to_link_modes(u32 fec, unsigned long *link_modes, u8 *fec_auto) |
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{ |
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if (fec_auto) |
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*fec_auto = !!(fec & ETHTOOL_FEC_AUTO); |
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if (fec & ETHTOOL_FEC_OFF) |
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__set_bit(ETHTOOL_LINK_MODE_FEC_NONE_BIT, link_modes); |
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if (fec & ETHTOOL_FEC_RS) |
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__set_bit(ETHTOOL_LINK_MODE_FEC_RS_BIT, link_modes); |
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if (fec & ETHTOOL_FEC_BASER) |
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__set_bit(ETHTOOL_LINK_MODE_FEC_BASER_BIT, link_modes); |
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if (fec & ETHTOOL_FEC_LLRS) |
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__set_bit(ETHTOOL_LINK_MODE_FEC_LLRS_BIT, link_modes); |
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} |
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static int |
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ethtool_link_modes_to_fecparam(struct ethtool_fecparam *fec, |
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unsigned long *link_modes, u8 fec_auto) |
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{ |
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memset(fec, 0, sizeof(*fec)); |
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if (fec_auto) |
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fec->fec |= ETHTOOL_FEC_AUTO; |
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if (__test_and_clear_bit(ETHTOOL_LINK_MODE_FEC_NONE_BIT, link_modes)) |
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fec->fec |= ETHTOOL_FEC_OFF; |
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if (__test_and_clear_bit(ETHTOOL_LINK_MODE_FEC_RS_BIT, link_modes)) |
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fec->fec |= ETHTOOL_FEC_RS; |
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if (__test_and_clear_bit(ETHTOOL_LINK_MODE_FEC_BASER_BIT, link_modes)) |
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fec->fec |= ETHTOOL_FEC_BASER; |
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if (__test_and_clear_bit(ETHTOOL_LINK_MODE_FEC_LLRS_BIT, link_modes)) |
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fec->fec |= ETHTOOL_FEC_LLRS; |
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if (!bitmap_empty(link_modes, __ETHTOOL_LINK_MODE_MASK_NBITS)) |
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return -EINVAL; |
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return 0; |
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} |
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static void |
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fec_stats_recalc(struct fec_stat_grp *grp, struct ethtool_fec_stat *stats) |
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{ |
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int i; |
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if (stats->lanes[0] == ETHTOOL_STAT_NOT_SET) { |
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grp->stats[0] = stats->total; |
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grp->cnt = stats->total != ETHTOOL_STAT_NOT_SET; |
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return; |
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} |
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grp->cnt = 1; |
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grp->stats[0] = 0; |
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for (i = 0; i < ETHTOOL_MAX_LANES; i++) { |
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if (stats->lanes[i] == ETHTOOL_STAT_NOT_SET) |
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break; |
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grp->stats[0] += stats->lanes[i]; |
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grp->stats[grp->cnt++] = stats->lanes[i]; |
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} |
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} |
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static int fec_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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__ETHTOOL_DECLARE_LINK_MODE_MASK(active_fec_modes) = {}; |
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struct fec_reply_data *data = FEC_REPDATA(reply_base); |
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struct net_device *dev = reply_base->dev; |
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struct ethtool_fecparam fec = {}; |
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int ret; |
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if (!dev->ethtool_ops->get_fecparam) |
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return -EOPNOTSUPP; |
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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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ret = dev->ethtool_ops->get_fecparam(dev, &fec); |
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if (ret) |
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goto out_complete; |
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if (req_base->flags & ETHTOOL_FLAG_STATS && |
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dev->ethtool_ops->get_fec_stats) { |
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struct ethtool_fec_stats stats; |
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ethtool_stats_init((u64 *)&stats, sizeof(stats) / 8); |
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dev->ethtool_ops->get_fec_stats(dev, &stats); |
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fec_stats_recalc(&data->corr, &stats.corrected_blocks); |
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fec_stats_recalc(&data->uncorr, &stats.uncorrectable_blocks); |
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fec_stats_recalc(&data->corr_bits, &stats.corrected_bits); |
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} |
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WARN_ON_ONCE(fec.reserved); |
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ethtool_fec_to_link_modes(fec.fec, data->fec_link_modes, |
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&data->fec_auto); |
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ethtool_fec_to_link_modes(fec.active_fec, active_fec_modes, NULL); |
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data->active_fec = find_first_bit(active_fec_modes, |
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__ETHTOOL_LINK_MODE_MASK_NBITS); |
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/* Don't report attr if no FEC mode set. Note that |
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* ethtool_fecparam_to_link_modes() ignores NONE and AUTO. |
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*/ |
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if (data->active_fec == __ETHTOOL_LINK_MODE_MASK_NBITS) |
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data->active_fec = 0; |
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out_complete: |
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ethnl_ops_complete(dev); |
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return ret; |
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} |
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static int fec_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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bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS; |
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const struct fec_reply_data *data = FEC_REPDATA(reply_base); |
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int len = 0; |
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int ret; |
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ret = ethnl_bitset_size(data->fec_link_modes, NULL, |
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__ETHTOOL_LINK_MODE_MASK_NBITS, |
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link_mode_names, compact); |
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if (ret < 0) |
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return ret; |
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len += ret; |
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len += nla_total_size(sizeof(u8)) + /* _FEC_AUTO */ |
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nla_total_size(sizeof(u32)); /* _FEC_ACTIVE */ |
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if (req_base->flags & ETHTOOL_FLAG_STATS) |
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len += 3 * nla_total_size_64bit(sizeof(u64) * |
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(1 + ETHTOOL_MAX_LANES)); |
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return len; |
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} |
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static int fec_put_stats(struct sk_buff *skb, const struct fec_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_FEC_STATS); |
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if (!nest) |
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return -EMSGSIZE; |
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if (nla_put_64bit(skb, ETHTOOL_A_FEC_STAT_CORRECTED, |
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sizeof(u64) * data->corr.cnt, |
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data->corr.stats, ETHTOOL_A_FEC_STAT_PAD) || |
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nla_put_64bit(skb, ETHTOOL_A_FEC_STAT_UNCORR, |
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sizeof(u64) * data->uncorr.cnt, |
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data->uncorr.stats, ETHTOOL_A_FEC_STAT_PAD) || |
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nla_put_64bit(skb, ETHTOOL_A_FEC_STAT_CORR_BITS, |
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sizeof(u64) * data->corr_bits.cnt, |
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data->corr_bits.stats, ETHTOOL_A_FEC_STAT_PAD)) |
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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 fec_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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bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS; |
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const struct fec_reply_data *data = FEC_REPDATA(reply_base); |
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int ret; |
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ret = ethnl_put_bitset(skb, ETHTOOL_A_FEC_MODES, |
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data->fec_link_modes, NULL, |
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__ETHTOOL_LINK_MODE_MASK_NBITS, |
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link_mode_names, compact); |
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if (ret < 0) |
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return ret; |
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if (nla_put_u8(skb, ETHTOOL_A_FEC_AUTO, data->fec_auto) || |
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(data->active_fec && |
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nla_put_u32(skb, ETHTOOL_A_FEC_ACTIVE, data->active_fec))) |
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return -EMSGSIZE; |
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if (req_base->flags & ETHTOOL_FLAG_STATS && fec_put_stats(skb, data)) |
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return -EMSGSIZE; |
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return 0; |
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} |
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const struct ethnl_request_ops ethnl_fec_request_ops = { |
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.request_cmd = ETHTOOL_MSG_FEC_GET, |
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.reply_cmd = ETHTOOL_MSG_FEC_GET_REPLY, |
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.hdr_attr = ETHTOOL_A_FEC_HEADER, |
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.req_info_size = sizeof(struct fec_req_info), |
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.reply_data_size = sizeof(struct fec_reply_data), |
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.prepare_data = fec_prepare_data, |
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.reply_size = fec_reply_size, |
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.fill_reply = fec_fill_reply, |
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}; |
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/* FEC_SET */ |
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const struct nla_policy ethnl_fec_set_policy[ETHTOOL_A_FEC_AUTO + 1] = { |
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[ETHTOOL_A_FEC_HEADER] = NLA_POLICY_NESTED(ethnl_header_policy), |
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[ETHTOOL_A_FEC_MODES] = { .type = NLA_NESTED }, |
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[ETHTOOL_A_FEC_AUTO] = NLA_POLICY_MAX(NLA_U8, 1), |
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}; |
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int ethnl_set_fec(struct sk_buff *skb, struct genl_info *info) |
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{ |
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__ETHTOOL_DECLARE_LINK_MODE_MASK(fec_link_modes) = {}; |
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struct ethnl_req_info req_info = {}; |
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struct nlattr **tb = info->attrs; |
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struct ethtool_fecparam fec = {}; |
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const struct ethtool_ops *ops; |
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struct net_device *dev; |
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bool mod = false; |
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u8 fec_auto; |
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int ret; |
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ret = ethnl_parse_header_dev_get(&req_info, tb[ETHTOOL_A_FEC_HEADER], |
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genl_info_net(info), info->extack, |
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true); |
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if (ret < 0) |
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return ret; |
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dev = req_info.dev; |
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ops = dev->ethtool_ops; |
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ret = -EOPNOTSUPP; |
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if (!ops->get_fecparam || !ops->set_fecparam) |
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goto out_dev; |
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rtnl_lock(); |
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ret = ethnl_ops_begin(dev); |
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if (ret < 0) |
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goto out_rtnl; |
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ret = ops->get_fecparam(dev, &fec); |
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if (ret < 0) |
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goto out_ops; |
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ethtool_fec_to_link_modes(fec.fec, fec_link_modes, &fec_auto); |
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ret = ethnl_update_bitset(fec_link_modes, |
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__ETHTOOL_LINK_MODE_MASK_NBITS, |
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tb[ETHTOOL_A_FEC_MODES], |
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link_mode_names, info->extack, &mod); |
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if (ret < 0) |
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goto out_ops; |
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ethnl_update_u8(&fec_auto, tb[ETHTOOL_A_FEC_AUTO], &mod); |
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ret = 0; |
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if (!mod) |
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goto out_ops; |
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ret = ethtool_link_modes_to_fecparam(&fec, fec_link_modes, fec_auto); |
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if (ret) { |
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NL_SET_ERR_MSG_ATTR(info->extack, tb[ETHTOOL_A_FEC_MODES], |
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"invalid FEC modes requested"); |
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goto out_ops; |
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} |
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if (!fec.fec) { |
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ret = -EINVAL; |
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NL_SET_ERR_MSG_ATTR(info->extack, tb[ETHTOOL_A_FEC_MODES], |
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"no FEC modes set"); |
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goto out_ops; |
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} |
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ret = dev->ethtool_ops->set_fecparam(dev, &fec); |
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if (ret < 0) |
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goto out_ops; |
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ethtool_notify(dev, ETHTOOL_MSG_FEC_NTF, NULL); |
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out_ops: |
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ethnl_ops_complete(dev); |
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out_rtnl: |
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rtnl_unlock(); |
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out_dev: |
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dev_put(dev); |
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return ret; |
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}
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