1b1b1847c8
Send ETHTOOL_MSG_LINKMODES_NTF notification message whenever device link settings or advertised modes are modified using ETHTOOL_MSG_LINKMODES_SET netlink message or ETHTOOL_SLINKSETTINGS or ETHTOOL_SSET ioctl commands. The notification message has the same format as reply to LINKMODES_GET request. ETHTOOL_MSG_LINKMODES_SET netlink request only triggers the notification if there is a change but the ioctl command handlers do not check if there is an actual change and trigger the notification whenever the commands are executed. As all work is done by ethnl_default_notify() handler and callback functions introduced to handle LINKMODES_GET requests, all that remains is adding entries for ETHTOOL_MSG_LINKMODES_NTF into ethnl_notify_handlers and ethnl_default_notify_ops lookup tables and calls to ethtool_notify() where needed. Signed-off-by: Michal Kubecek <mkubecek@suse.cz> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
378 lines
12 KiB
C
378 lines
12 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 linkmodes_req_info {
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struct ethnl_req_info base;
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};
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struct linkmodes_reply_data {
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struct ethnl_reply_data base;
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struct ethtool_link_ksettings ksettings;
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struct ethtool_link_settings *lsettings;
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bool peer_empty;
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};
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#define LINKMODES_REPDATA(__reply_base) \
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container_of(__reply_base, struct linkmodes_reply_data, base)
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static const struct nla_policy
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linkmodes_get_policy[ETHTOOL_A_LINKMODES_MAX + 1] = {
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[ETHTOOL_A_LINKMODES_UNSPEC] = { .type = NLA_REJECT },
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[ETHTOOL_A_LINKMODES_HEADER] = { .type = NLA_NESTED },
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[ETHTOOL_A_LINKMODES_AUTONEG] = { .type = NLA_REJECT },
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[ETHTOOL_A_LINKMODES_OURS] = { .type = NLA_REJECT },
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[ETHTOOL_A_LINKMODES_PEER] = { .type = NLA_REJECT },
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[ETHTOOL_A_LINKMODES_SPEED] = { .type = NLA_REJECT },
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[ETHTOOL_A_LINKMODES_DUPLEX] = { .type = NLA_REJECT },
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};
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static int linkmodes_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 linkmodes_reply_data *data = LINKMODES_REPDATA(reply_base);
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struct net_device *dev = reply_base->dev;
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int ret;
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data->lsettings = &data->ksettings.base;
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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 = __ethtool_get_link_ksettings(dev, &data->ksettings);
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if (ret < 0 && info) {
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GENL_SET_ERR_MSG(info, "failed to retrieve link settings");
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goto out;
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}
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data->peer_empty =
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bitmap_empty(data->ksettings.link_modes.lp_advertising,
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__ETHTOOL_LINK_MODE_MASK_NBITS);
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out:
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ethnl_ops_complete(dev);
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return ret;
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}
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static int linkmodes_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 linkmodes_reply_data *data = LINKMODES_REPDATA(reply_base);
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const struct ethtool_link_ksettings *ksettings = &data->ksettings;
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bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS;
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int len, ret;
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len = nla_total_size(sizeof(u8)) /* LINKMODES_AUTONEG */
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+ nla_total_size(sizeof(u32)) /* LINKMODES_SPEED */
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+ nla_total_size(sizeof(u8)) /* LINKMODES_DUPLEX */
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+ 0;
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ret = ethnl_bitset_size(ksettings->link_modes.advertising,
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ksettings->link_modes.supported,
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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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if (!data->peer_empty) {
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ret = ethnl_bitset_size(ksettings->link_modes.lp_advertising,
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NULL, __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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}
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return len;
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}
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static int linkmodes_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 linkmodes_reply_data *data = LINKMODES_REPDATA(reply_base);
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const struct ethtool_link_ksettings *ksettings = &data->ksettings;
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const struct ethtool_link_settings *lsettings = &ksettings->base;
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bool compact = req_base->flags & ETHTOOL_FLAG_COMPACT_BITSETS;
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int ret;
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if (nla_put_u8(skb, ETHTOOL_A_LINKMODES_AUTONEG, lsettings->autoneg))
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return -EMSGSIZE;
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ret = ethnl_put_bitset(skb, ETHTOOL_A_LINKMODES_OURS,
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ksettings->link_modes.advertising,
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ksettings->link_modes.supported,
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__ETHTOOL_LINK_MODE_MASK_NBITS, link_mode_names,
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compact);
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if (ret < 0)
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return -EMSGSIZE;
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if (!data->peer_empty) {
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ret = ethnl_put_bitset(skb, ETHTOOL_A_LINKMODES_PEER,
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ksettings->link_modes.lp_advertising,
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NULL, __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 -EMSGSIZE;
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}
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if (nla_put_u32(skb, ETHTOOL_A_LINKMODES_SPEED, lsettings->speed) ||
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nla_put_u8(skb, ETHTOOL_A_LINKMODES_DUPLEX, lsettings->duplex))
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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_linkmodes_request_ops = {
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.request_cmd = ETHTOOL_MSG_LINKMODES_GET,
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.reply_cmd = ETHTOOL_MSG_LINKMODES_GET_REPLY,
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.hdr_attr = ETHTOOL_A_LINKMODES_HEADER,
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.max_attr = ETHTOOL_A_LINKMODES_MAX,
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.req_info_size = sizeof(struct linkmodes_req_info),
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.reply_data_size = sizeof(struct linkmodes_reply_data),
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.request_policy = linkmodes_get_policy,
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.prepare_data = linkmodes_prepare_data,
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.reply_size = linkmodes_reply_size,
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.fill_reply = linkmodes_fill_reply,
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};
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/* LINKMODES_SET */
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struct link_mode_info {
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int speed;
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u8 duplex;
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};
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#define __DEFINE_LINK_MODE_PARAMS(_speed, _type, _duplex) \
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[ETHTOOL_LINK_MODE(_speed, _type, _duplex)] = { \
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.speed = SPEED_ ## _speed, \
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.duplex = __DUPLEX_ ## _duplex \
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}
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#define __DUPLEX_Half DUPLEX_HALF
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#define __DUPLEX_Full DUPLEX_FULL
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#define __DEFINE_SPECIAL_MODE_PARAMS(_mode) \
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[ETHTOOL_LINK_MODE_ ## _mode ## _BIT] = { \
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.speed = SPEED_UNKNOWN, \
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.duplex = DUPLEX_UNKNOWN, \
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}
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static const struct link_mode_info link_mode_params[] = {
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__DEFINE_LINK_MODE_PARAMS(10, T, Half),
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__DEFINE_LINK_MODE_PARAMS(10, T, Full),
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__DEFINE_LINK_MODE_PARAMS(100, T, Half),
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__DEFINE_LINK_MODE_PARAMS(100, T, Full),
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__DEFINE_LINK_MODE_PARAMS(1000, T, Half),
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__DEFINE_LINK_MODE_PARAMS(1000, T, Full),
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__DEFINE_SPECIAL_MODE_PARAMS(Autoneg),
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__DEFINE_SPECIAL_MODE_PARAMS(TP),
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__DEFINE_SPECIAL_MODE_PARAMS(AUI),
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__DEFINE_SPECIAL_MODE_PARAMS(MII),
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__DEFINE_SPECIAL_MODE_PARAMS(FIBRE),
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__DEFINE_SPECIAL_MODE_PARAMS(BNC),
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__DEFINE_LINK_MODE_PARAMS(10000, T, Full),
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__DEFINE_SPECIAL_MODE_PARAMS(Pause),
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__DEFINE_SPECIAL_MODE_PARAMS(Asym_Pause),
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__DEFINE_LINK_MODE_PARAMS(2500, X, Full),
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__DEFINE_SPECIAL_MODE_PARAMS(Backplane),
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__DEFINE_LINK_MODE_PARAMS(1000, KX, Full),
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__DEFINE_LINK_MODE_PARAMS(10000, KX4, Full),
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__DEFINE_LINK_MODE_PARAMS(10000, KR, Full),
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[ETHTOOL_LINK_MODE_10000baseR_FEC_BIT] = {
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.speed = SPEED_10000,
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.duplex = DUPLEX_FULL,
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},
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__DEFINE_LINK_MODE_PARAMS(20000, MLD2, Full),
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__DEFINE_LINK_MODE_PARAMS(20000, KR2, Full),
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__DEFINE_LINK_MODE_PARAMS(40000, KR4, Full),
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__DEFINE_LINK_MODE_PARAMS(40000, CR4, Full),
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__DEFINE_LINK_MODE_PARAMS(40000, SR4, Full),
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__DEFINE_LINK_MODE_PARAMS(40000, LR4, Full),
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__DEFINE_LINK_MODE_PARAMS(56000, KR4, Full),
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__DEFINE_LINK_MODE_PARAMS(56000, CR4, Full),
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__DEFINE_LINK_MODE_PARAMS(56000, SR4, Full),
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__DEFINE_LINK_MODE_PARAMS(56000, LR4, Full),
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__DEFINE_LINK_MODE_PARAMS(25000, CR, Full),
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__DEFINE_LINK_MODE_PARAMS(25000, KR, Full),
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__DEFINE_LINK_MODE_PARAMS(25000, SR, Full),
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__DEFINE_LINK_MODE_PARAMS(50000, CR2, Full),
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__DEFINE_LINK_MODE_PARAMS(50000, KR2, Full),
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__DEFINE_LINK_MODE_PARAMS(100000, KR4, Full),
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__DEFINE_LINK_MODE_PARAMS(100000, SR4, Full),
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__DEFINE_LINK_MODE_PARAMS(100000, CR4, Full),
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__DEFINE_LINK_MODE_PARAMS(100000, LR4_ER4, Full),
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__DEFINE_LINK_MODE_PARAMS(50000, SR2, Full),
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__DEFINE_LINK_MODE_PARAMS(1000, X, Full),
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__DEFINE_LINK_MODE_PARAMS(10000, CR, Full),
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__DEFINE_LINK_MODE_PARAMS(10000, SR, Full),
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__DEFINE_LINK_MODE_PARAMS(10000, LR, Full),
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__DEFINE_LINK_MODE_PARAMS(10000, LRM, Full),
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__DEFINE_LINK_MODE_PARAMS(10000, ER, Full),
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__DEFINE_LINK_MODE_PARAMS(2500, T, Full),
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__DEFINE_LINK_MODE_PARAMS(5000, T, Full),
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__DEFINE_SPECIAL_MODE_PARAMS(FEC_NONE),
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__DEFINE_SPECIAL_MODE_PARAMS(FEC_RS),
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__DEFINE_SPECIAL_MODE_PARAMS(FEC_BASER),
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__DEFINE_LINK_MODE_PARAMS(50000, KR, Full),
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__DEFINE_LINK_MODE_PARAMS(50000, SR, Full),
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__DEFINE_LINK_MODE_PARAMS(50000, CR, Full),
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__DEFINE_LINK_MODE_PARAMS(50000, LR_ER_FR, Full),
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__DEFINE_LINK_MODE_PARAMS(50000, DR, Full),
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__DEFINE_LINK_MODE_PARAMS(100000, KR2, Full),
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__DEFINE_LINK_MODE_PARAMS(100000, SR2, Full),
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__DEFINE_LINK_MODE_PARAMS(100000, CR2, Full),
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__DEFINE_LINK_MODE_PARAMS(100000, LR2_ER2_FR2, Full),
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__DEFINE_LINK_MODE_PARAMS(100000, DR2, Full),
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__DEFINE_LINK_MODE_PARAMS(200000, KR4, Full),
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__DEFINE_LINK_MODE_PARAMS(200000, SR4, Full),
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__DEFINE_LINK_MODE_PARAMS(200000, LR4_ER4_FR4, Full),
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__DEFINE_LINK_MODE_PARAMS(200000, DR4, Full),
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__DEFINE_LINK_MODE_PARAMS(200000, CR4, Full),
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__DEFINE_LINK_MODE_PARAMS(100, T1, Full),
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__DEFINE_LINK_MODE_PARAMS(1000, T1, Full),
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__DEFINE_LINK_MODE_PARAMS(400000, KR8, Full),
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__DEFINE_LINK_MODE_PARAMS(400000, SR8, Full),
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__DEFINE_LINK_MODE_PARAMS(400000, LR8_ER8_FR8, Full),
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__DEFINE_LINK_MODE_PARAMS(400000, DR8, Full),
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__DEFINE_LINK_MODE_PARAMS(400000, CR8, Full),
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};
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static const struct nla_policy
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linkmodes_set_policy[ETHTOOL_A_LINKMODES_MAX + 1] = {
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[ETHTOOL_A_LINKMODES_UNSPEC] = { .type = NLA_REJECT },
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[ETHTOOL_A_LINKMODES_HEADER] = { .type = NLA_NESTED },
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[ETHTOOL_A_LINKMODES_AUTONEG] = { .type = NLA_U8 },
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[ETHTOOL_A_LINKMODES_OURS] = { .type = NLA_NESTED },
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[ETHTOOL_A_LINKMODES_PEER] = { .type = NLA_REJECT },
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[ETHTOOL_A_LINKMODES_SPEED] = { .type = NLA_U32 },
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[ETHTOOL_A_LINKMODES_DUPLEX] = { .type = NLA_U8 },
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};
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/* Set advertised link modes to all supported modes matching requested speed
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* and duplex values. Called when autonegotiation is on, speed or duplex is
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* requested but no link mode change. This is done in userspace with ioctl()
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* interface, move it into kernel for netlink.
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* Returns true if advertised modes bitmap was modified.
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*/
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static bool ethnl_auto_linkmodes(struct ethtool_link_ksettings *ksettings,
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bool req_speed, bool req_duplex)
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{
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unsigned long *advertising = ksettings->link_modes.advertising;
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unsigned long *supported = ksettings->link_modes.supported;
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DECLARE_BITMAP(old_adv, __ETHTOOL_LINK_MODE_MASK_NBITS);
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unsigned int i;
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BUILD_BUG_ON(ARRAY_SIZE(link_mode_params) !=
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__ETHTOOL_LINK_MODE_MASK_NBITS);
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bitmap_copy(old_adv, advertising, __ETHTOOL_LINK_MODE_MASK_NBITS);
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for (i = 0; i < __ETHTOOL_LINK_MODE_MASK_NBITS; i++) {
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const struct link_mode_info *info = &link_mode_params[i];
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if (info->speed == SPEED_UNKNOWN)
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continue;
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if (test_bit(i, supported) &&
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(!req_speed || info->speed == ksettings->base.speed) &&
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(!req_duplex || info->duplex == ksettings->base.duplex))
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set_bit(i, advertising);
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else
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clear_bit(i, advertising);
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}
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return !bitmap_equal(old_adv, advertising,
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__ETHTOOL_LINK_MODE_MASK_NBITS);
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}
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static int ethnl_update_linkmodes(struct genl_info *info, struct nlattr **tb,
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struct ethtool_link_ksettings *ksettings,
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bool *mod)
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{
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struct ethtool_link_settings *lsettings = &ksettings->base;
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bool req_speed, req_duplex;
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int ret;
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*mod = false;
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req_speed = tb[ETHTOOL_A_LINKMODES_SPEED];
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req_duplex = tb[ETHTOOL_A_LINKMODES_DUPLEX];
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ethnl_update_u8(&lsettings->autoneg, tb[ETHTOOL_A_LINKMODES_AUTONEG],
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mod);
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ret = ethnl_update_bitset(ksettings->link_modes.advertising,
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__ETHTOOL_LINK_MODE_MASK_NBITS,
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tb[ETHTOOL_A_LINKMODES_OURS], link_mode_names,
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info->extack, mod);
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if (ret < 0)
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return ret;
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ethnl_update_u32(&lsettings->speed, tb[ETHTOOL_A_LINKMODES_SPEED],
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mod);
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ethnl_update_u8(&lsettings->duplex, tb[ETHTOOL_A_LINKMODES_DUPLEX],
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mod);
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if (!tb[ETHTOOL_A_LINKMODES_OURS] && lsettings->autoneg &&
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(req_speed || req_duplex) &&
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ethnl_auto_linkmodes(ksettings, req_speed, req_duplex))
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*mod = true;
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return 0;
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}
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int ethnl_set_linkmodes(struct sk_buff *skb, struct genl_info *info)
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{
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struct nlattr *tb[ETHTOOL_A_LINKMODES_MAX + 1];
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struct ethtool_link_ksettings ksettings = {};
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struct ethtool_link_settings *lsettings;
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struct ethnl_req_info req_info = {};
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struct net_device *dev;
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bool mod = false;
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int ret;
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ret = nlmsg_parse(info->nlhdr, GENL_HDRLEN, tb,
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ETHTOOL_A_LINKMODES_MAX, linkmodes_set_policy,
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info->extack);
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if (ret < 0)
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return ret;
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ret = ethnl_parse_header(&req_info, tb[ETHTOOL_A_LINKMODES_HEADER],
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genl_info_net(info), info->extack, 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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if (!dev->ethtool_ops->get_link_ksettings ||
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!dev->ethtool_ops->set_link_ksettings)
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return -EOPNOTSUPP;
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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 = __ethtool_get_link_ksettings(dev, &ksettings);
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if (ret < 0) {
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if (info)
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GENL_SET_ERR_MSG(info, "failed to retrieve link settings");
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goto out_ops;
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}
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lsettings = &ksettings.base;
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ret = ethnl_update_linkmodes(info, tb, &ksettings, &mod);
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if (ret < 0)
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goto out_ops;
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if (mod) {
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ret = dev->ethtool_ops->set_link_ksettings(dev, &ksettings);
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if (ret < 0)
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GENL_SET_ERR_MSG(info, "link settings update failed");
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else
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ethtool_notify(dev, ETHTOOL_MSG_LINKMODES_NTF, NULL);
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}
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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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dev_put(dev);
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return ret;
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}
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