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322 lines
13 KiB
322 lines
13 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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struct coalesce_req_info { |
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struct ethnl_req_info base; |
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}; |
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struct coalesce_reply_data { |
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struct ethnl_reply_data base; |
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struct ethtool_coalesce coalesce; |
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u32 supported_params; |
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}; |
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#define COALESCE_REPDATA(__reply_base) \ |
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container_of(__reply_base, struct coalesce_reply_data, base) |
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#define __SUPPORTED_OFFSET ETHTOOL_A_COALESCE_RX_USECS |
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static u32 attr_to_mask(unsigned int attr_type) |
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{ |
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return BIT(attr_type - __SUPPORTED_OFFSET); |
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} |
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/* build time check that indices in ethtool_ops::supported_coalesce_params |
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* match corresponding attribute types with an offset |
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*/ |
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#define __CHECK_SUPPORTED_OFFSET(x) \ |
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static_assert((ETHTOOL_ ## x) == \ |
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BIT((ETHTOOL_A_ ## x) - __SUPPORTED_OFFSET)) |
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__CHECK_SUPPORTED_OFFSET(COALESCE_RX_USECS); |
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__CHECK_SUPPORTED_OFFSET(COALESCE_RX_MAX_FRAMES); |
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__CHECK_SUPPORTED_OFFSET(COALESCE_RX_USECS_IRQ); |
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__CHECK_SUPPORTED_OFFSET(COALESCE_RX_MAX_FRAMES_IRQ); |
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__CHECK_SUPPORTED_OFFSET(COALESCE_TX_USECS); |
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__CHECK_SUPPORTED_OFFSET(COALESCE_TX_MAX_FRAMES); |
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__CHECK_SUPPORTED_OFFSET(COALESCE_TX_USECS_IRQ); |
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__CHECK_SUPPORTED_OFFSET(COALESCE_TX_MAX_FRAMES_IRQ); |
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__CHECK_SUPPORTED_OFFSET(COALESCE_STATS_BLOCK_USECS); |
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__CHECK_SUPPORTED_OFFSET(COALESCE_USE_ADAPTIVE_RX); |
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__CHECK_SUPPORTED_OFFSET(COALESCE_USE_ADAPTIVE_TX); |
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__CHECK_SUPPORTED_OFFSET(COALESCE_PKT_RATE_LOW); |
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__CHECK_SUPPORTED_OFFSET(COALESCE_RX_USECS_LOW); |
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__CHECK_SUPPORTED_OFFSET(COALESCE_RX_MAX_FRAMES_LOW); |
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__CHECK_SUPPORTED_OFFSET(COALESCE_TX_USECS_LOW); |
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__CHECK_SUPPORTED_OFFSET(COALESCE_TX_MAX_FRAMES_LOW); |
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__CHECK_SUPPORTED_OFFSET(COALESCE_PKT_RATE_HIGH); |
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__CHECK_SUPPORTED_OFFSET(COALESCE_RX_USECS_HIGH); |
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__CHECK_SUPPORTED_OFFSET(COALESCE_RX_MAX_FRAMES_HIGH); |
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__CHECK_SUPPORTED_OFFSET(COALESCE_TX_USECS_HIGH); |
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__CHECK_SUPPORTED_OFFSET(COALESCE_TX_MAX_FRAMES_HIGH); |
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__CHECK_SUPPORTED_OFFSET(COALESCE_RATE_SAMPLE_INTERVAL); |
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const struct nla_policy ethnl_coalesce_get_policy[] = { |
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[ETHTOOL_A_COALESCE_HEADER] = |
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NLA_POLICY_NESTED(ethnl_header_policy), |
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}; |
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static int coalesce_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 coalesce_reply_data *data = COALESCE_REPDATA(reply_base); |
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struct net_device *dev = reply_base->dev; |
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int ret; |
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if (!dev->ethtool_ops->get_coalesce) |
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return -EOPNOTSUPP; |
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data->supported_params = dev->ethtool_ops->supported_coalesce_params; |
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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_coalesce(dev, &data->coalesce); |
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ethnl_ops_complete(dev); |
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return ret; |
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} |
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static int coalesce_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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return nla_total_size(sizeof(u32)) + /* _RX_USECS */ |
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nla_total_size(sizeof(u32)) + /* _RX_MAX_FRAMES */ |
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nla_total_size(sizeof(u32)) + /* _RX_USECS_IRQ */ |
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nla_total_size(sizeof(u32)) + /* _RX_MAX_FRAMES_IRQ */ |
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nla_total_size(sizeof(u32)) + /* _TX_USECS */ |
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nla_total_size(sizeof(u32)) + /* _TX_MAX_FRAMES */ |
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nla_total_size(sizeof(u32)) + /* _TX_USECS_IRQ */ |
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nla_total_size(sizeof(u32)) + /* _TX_MAX_FRAMES_IRQ */ |
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nla_total_size(sizeof(u32)) + /* _STATS_BLOCK_USECS */ |
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nla_total_size(sizeof(u8)) + /* _USE_ADAPTIVE_RX */ |
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nla_total_size(sizeof(u8)) + /* _USE_ADAPTIVE_TX */ |
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nla_total_size(sizeof(u32)) + /* _PKT_RATE_LOW */ |
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nla_total_size(sizeof(u32)) + /* _RX_USECS_LOW */ |
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nla_total_size(sizeof(u32)) + /* _RX_MAX_FRAMES_LOW */ |
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nla_total_size(sizeof(u32)) + /* _TX_USECS_LOW */ |
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nla_total_size(sizeof(u32)) + /* _TX_MAX_FRAMES_LOW */ |
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nla_total_size(sizeof(u32)) + /* _PKT_RATE_HIGH */ |
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nla_total_size(sizeof(u32)) + /* _RX_USECS_HIGH */ |
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nla_total_size(sizeof(u32)) + /* _RX_MAX_FRAMES_HIGH */ |
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nla_total_size(sizeof(u32)) + /* _TX_USECS_HIGH */ |
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nla_total_size(sizeof(u32)) + /* _TX_MAX_FRAMES_HIGH */ |
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nla_total_size(sizeof(u32)); /* _RATE_SAMPLE_INTERVAL */ |
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} |
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static bool coalesce_put_u32(struct sk_buff *skb, u16 attr_type, u32 val, |
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u32 supported_params) |
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{ |
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if (!val && !(supported_params & attr_to_mask(attr_type))) |
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return false; |
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return nla_put_u32(skb, attr_type, val); |
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} |
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static bool coalesce_put_bool(struct sk_buff *skb, u16 attr_type, u32 val, |
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u32 supported_params) |
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{ |
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if (!val && !(supported_params & attr_to_mask(attr_type))) |
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return false; |
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return nla_put_u8(skb, attr_type, !!val); |
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} |
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static int coalesce_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 coalesce_reply_data *data = COALESCE_REPDATA(reply_base); |
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const struct ethtool_coalesce *coal = &data->coalesce; |
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u32 supported = data->supported_params; |
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if (coalesce_put_u32(skb, ETHTOOL_A_COALESCE_RX_USECS, |
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coal->rx_coalesce_usecs, supported) || |
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coalesce_put_u32(skb, ETHTOOL_A_COALESCE_RX_MAX_FRAMES, |
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coal->rx_max_coalesced_frames, supported) || |
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coalesce_put_u32(skb, ETHTOOL_A_COALESCE_RX_USECS_IRQ, |
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coal->rx_coalesce_usecs_irq, supported) || |
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coalesce_put_u32(skb, ETHTOOL_A_COALESCE_RX_MAX_FRAMES_IRQ, |
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coal->rx_max_coalesced_frames_irq, supported) || |
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coalesce_put_u32(skb, ETHTOOL_A_COALESCE_TX_USECS, |
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coal->tx_coalesce_usecs, supported) || |
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coalesce_put_u32(skb, ETHTOOL_A_COALESCE_TX_MAX_FRAMES, |
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coal->tx_max_coalesced_frames, supported) || |
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coalesce_put_u32(skb, ETHTOOL_A_COALESCE_TX_USECS_IRQ, |
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coal->tx_coalesce_usecs_irq, supported) || |
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coalesce_put_u32(skb, ETHTOOL_A_COALESCE_TX_MAX_FRAMES_IRQ, |
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coal->tx_max_coalesced_frames_irq, supported) || |
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coalesce_put_u32(skb, ETHTOOL_A_COALESCE_STATS_BLOCK_USECS, |
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coal->stats_block_coalesce_usecs, supported) || |
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coalesce_put_bool(skb, ETHTOOL_A_COALESCE_USE_ADAPTIVE_RX, |
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coal->use_adaptive_rx_coalesce, supported) || |
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coalesce_put_bool(skb, ETHTOOL_A_COALESCE_USE_ADAPTIVE_TX, |
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coal->use_adaptive_tx_coalesce, supported) || |
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coalesce_put_u32(skb, ETHTOOL_A_COALESCE_PKT_RATE_LOW, |
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coal->pkt_rate_low, supported) || |
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coalesce_put_u32(skb, ETHTOOL_A_COALESCE_RX_USECS_LOW, |
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coal->rx_coalesce_usecs_low, supported) || |
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coalesce_put_u32(skb, ETHTOOL_A_COALESCE_RX_MAX_FRAMES_LOW, |
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coal->rx_max_coalesced_frames_low, supported) || |
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coalesce_put_u32(skb, ETHTOOL_A_COALESCE_TX_USECS_LOW, |
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coal->tx_coalesce_usecs_low, supported) || |
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coalesce_put_u32(skb, ETHTOOL_A_COALESCE_TX_MAX_FRAMES_LOW, |
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coal->tx_max_coalesced_frames_low, supported) || |
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coalesce_put_u32(skb, ETHTOOL_A_COALESCE_PKT_RATE_HIGH, |
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coal->pkt_rate_high, supported) || |
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coalesce_put_u32(skb, ETHTOOL_A_COALESCE_RX_USECS_HIGH, |
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coal->rx_coalesce_usecs_high, supported) || |
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coalesce_put_u32(skb, ETHTOOL_A_COALESCE_RX_MAX_FRAMES_HIGH, |
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coal->rx_max_coalesced_frames_high, supported) || |
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coalesce_put_u32(skb, ETHTOOL_A_COALESCE_TX_USECS_HIGH, |
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coal->tx_coalesce_usecs_high, supported) || |
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coalesce_put_u32(skb, ETHTOOL_A_COALESCE_TX_MAX_FRAMES_HIGH, |
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coal->tx_max_coalesced_frames_high, supported) || |
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coalesce_put_u32(skb, ETHTOOL_A_COALESCE_RATE_SAMPLE_INTERVAL, |
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coal->rate_sample_interval, supported)) |
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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_coalesce_request_ops = { |
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.request_cmd = ETHTOOL_MSG_COALESCE_GET, |
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.reply_cmd = ETHTOOL_MSG_COALESCE_GET_REPLY, |
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.hdr_attr = ETHTOOL_A_COALESCE_HEADER, |
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.req_info_size = sizeof(struct coalesce_req_info), |
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.reply_data_size = sizeof(struct coalesce_reply_data), |
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.prepare_data = coalesce_prepare_data, |
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.reply_size = coalesce_reply_size, |
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.fill_reply = coalesce_fill_reply, |
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}; |
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/* COALESCE_SET */ |
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const struct nla_policy ethnl_coalesce_set_policy[] = { |
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[ETHTOOL_A_COALESCE_HEADER] = |
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NLA_POLICY_NESTED(ethnl_header_policy), |
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[ETHTOOL_A_COALESCE_RX_USECS] = { .type = NLA_U32 }, |
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[ETHTOOL_A_COALESCE_RX_MAX_FRAMES] = { .type = NLA_U32 }, |
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[ETHTOOL_A_COALESCE_RX_USECS_IRQ] = { .type = NLA_U32 }, |
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[ETHTOOL_A_COALESCE_RX_MAX_FRAMES_IRQ] = { .type = NLA_U32 }, |
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[ETHTOOL_A_COALESCE_TX_USECS] = { .type = NLA_U32 }, |
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[ETHTOOL_A_COALESCE_TX_MAX_FRAMES] = { .type = NLA_U32 }, |
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[ETHTOOL_A_COALESCE_TX_USECS_IRQ] = { .type = NLA_U32 }, |
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[ETHTOOL_A_COALESCE_TX_MAX_FRAMES_IRQ] = { .type = NLA_U32 }, |
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[ETHTOOL_A_COALESCE_STATS_BLOCK_USECS] = { .type = NLA_U32 }, |
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[ETHTOOL_A_COALESCE_USE_ADAPTIVE_RX] = { .type = NLA_U8 }, |
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[ETHTOOL_A_COALESCE_USE_ADAPTIVE_TX] = { .type = NLA_U8 }, |
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[ETHTOOL_A_COALESCE_PKT_RATE_LOW] = { .type = NLA_U32 }, |
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[ETHTOOL_A_COALESCE_RX_USECS_LOW] = { .type = NLA_U32 }, |
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[ETHTOOL_A_COALESCE_RX_MAX_FRAMES_LOW] = { .type = NLA_U32 }, |
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[ETHTOOL_A_COALESCE_TX_USECS_LOW] = { .type = NLA_U32 }, |
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[ETHTOOL_A_COALESCE_TX_MAX_FRAMES_LOW] = { .type = NLA_U32 }, |
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[ETHTOOL_A_COALESCE_PKT_RATE_HIGH] = { .type = NLA_U32 }, |
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[ETHTOOL_A_COALESCE_RX_USECS_HIGH] = { .type = NLA_U32 }, |
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[ETHTOOL_A_COALESCE_RX_MAX_FRAMES_HIGH] = { .type = NLA_U32 }, |
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[ETHTOOL_A_COALESCE_TX_USECS_HIGH] = { .type = NLA_U32 }, |
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[ETHTOOL_A_COALESCE_TX_MAX_FRAMES_HIGH] = { .type = NLA_U32 }, |
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[ETHTOOL_A_COALESCE_RATE_SAMPLE_INTERVAL] = { .type = NLA_U32 }, |
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}; |
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int ethnl_set_coalesce(struct sk_buff *skb, struct genl_info *info) |
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{ |
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struct ethtool_coalesce coalesce = {}; |
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struct ethnl_req_info req_info = {}; |
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struct nlattr **tb = info->attrs; |
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const struct ethtool_ops *ops; |
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struct net_device *dev; |
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u32 supported_params; |
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bool mod = false; |
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int ret; |
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u16 a; |
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ret = ethnl_parse_header_dev_get(&req_info, |
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tb[ETHTOOL_A_COALESCE_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_coalesce || !ops->set_coalesce) |
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goto out_dev; |
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/* make sure that only supported parameters are present */ |
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supported_params = ops->supported_coalesce_params; |
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for (a = ETHTOOL_A_COALESCE_RX_USECS; a < __ETHTOOL_A_COALESCE_CNT; a++) |
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if (tb[a] && !(supported_params & attr_to_mask(a))) { |
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ret = -EINVAL; |
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NL_SET_ERR_MSG_ATTR(info->extack, tb[a], |
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"cannot modify an unsupported parameter"); |
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goto out_dev; |
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} |
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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_coalesce(dev, &coalesce); |
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if (ret < 0) |
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goto out_ops; |
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ethnl_update_u32(&coalesce.rx_coalesce_usecs, |
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tb[ETHTOOL_A_COALESCE_RX_USECS], &mod); |
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ethnl_update_u32(&coalesce.rx_max_coalesced_frames, |
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tb[ETHTOOL_A_COALESCE_RX_MAX_FRAMES], &mod); |
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ethnl_update_u32(&coalesce.rx_coalesce_usecs_irq, |
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tb[ETHTOOL_A_COALESCE_RX_USECS_IRQ], &mod); |
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ethnl_update_u32(&coalesce.rx_max_coalesced_frames_irq, |
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tb[ETHTOOL_A_COALESCE_RX_MAX_FRAMES_IRQ], &mod); |
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ethnl_update_u32(&coalesce.tx_coalesce_usecs, |
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tb[ETHTOOL_A_COALESCE_TX_USECS], &mod); |
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ethnl_update_u32(&coalesce.tx_max_coalesced_frames, |
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tb[ETHTOOL_A_COALESCE_TX_MAX_FRAMES], &mod); |
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ethnl_update_u32(&coalesce.tx_coalesce_usecs_irq, |
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tb[ETHTOOL_A_COALESCE_TX_USECS_IRQ], &mod); |
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ethnl_update_u32(&coalesce.tx_max_coalesced_frames_irq, |
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tb[ETHTOOL_A_COALESCE_TX_MAX_FRAMES_IRQ], &mod); |
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ethnl_update_u32(&coalesce.stats_block_coalesce_usecs, |
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tb[ETHTOOL_A_COALESCE_STATS_BLOCK_USECS], &mod); |
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ethnl_update_bool32(&coalesce.use_adaptive_rx_coalesce, |
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tb[ETHTOOL_A_COALESCE_USE_ADAPTIVE_RX], &mod); |
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ethnl_update_bool32(&coalesce.use_adaptive_tx_coalesce, |
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tb[ETHTOOL_A_COALESCE_USE_ADAPTIVE_TX], &mod); |
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ethnl_update_u32(&coalesce.pkt_rate_low, |
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tb[ETHTOOL_A_COALESCE_PKT_RATE_LOW], &mod); |
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ethnl_update_u32(&coalesce.rx_coalesce_usecs_low, |
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tb[ETHTOOL_A_COALESCE_RX_USECS_LOW], &mod); |
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ethnl_update_u32(&coalesce.rx_max_coalesced_frames_low, |
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tb[ETHTOOL_A_COALESCE_RX_MAX_FRAMES_LOW], &mod); |
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ethnl_update_u32(&coalesce.tx_coalesce_usecs_low, |
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tb[ETHTOOL_A_COALESCE_TX_USECS_LOW], &mod); |
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ethnl_update_u32(&coalesce.tx_max_coalesced_frames_low, |
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tb[ETHTOOL_A_COALESCE_TX_MAX_FRAMES_LOW], &mod); |
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ethnl_update_u32(&coalesce.pkt_rate_high, |
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tb[ETHTOOL_A_COALESCE_PKT_RATE_HIGH], &mod); |
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ethnl_update_u32(&coalesce.rx_coalesce_usecs_high, |
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tb[ETHTOOL_A_COALESCE_RX_USECS_HIGH], &mod); |
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ethnl_update_u32(&coalesce.rx_max_coalesced_frames_high, |
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tb[ETHTOOL_A_COALESCE_RX_MAX_FRAMES_HIGH], &mod); |
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ethnl_update_u32(&coalesce.tx_coalesce_usecs_high, |
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tb[ETHTOOL_A_COALESCE_TX_USECS_HIGH], &mod); |
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ethnl_update_u32(&coalesce.tx_max_coalesced_frames_high, |
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tb[ETHTOOL_A_COALESCE_TX_MAX_FRAMES_HIGH], &mod); |
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ethnl_update_u32(&coalesce.rate_sample_interval, |
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tb[ETHTOOL_A_COALESCE_RATE_SAMPLE_INTERVAL], &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 = dev->ethtool_ops->set_coalesce(dev, &coalesce); |
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if (ret < 0) |
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goto out_ops; |
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ethtool_notify(dev, ETHTOOL_MSG_COALESCE_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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