From 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 27 Apr 2024 12:05:51 +0200 Subject: Adding upstream version 5.10.209. Signed-off-by: Daniel Baumann --- net/ethtool/coalesce.c | 322 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 322 insertions(+) create mode 100644 net/ethtool/coalesce.c (limited to 'net/ethtool/coalesce.c') diff --git a/net/ethtool/coalesce.c b/net/ethtool/coalesce.c new file mode 100644 index 000000000..1d6bc132a --- /dev/null +++ b/net/ethtool/coalesce.c @@ -0,0 +1,322 @@ +// SPDX-License-Identifier: GPL-2.0-only + +#include "netlink.h" +#include "common.h" + +struct coalesce_req_info { + struct ethnl_req_info base; +}; + +struct coalesce_reply_data { + struct ethnl_reply_data base; + struct ethtool_coalesce coalesce; + u32 supported_params; +}; + +#define COALESCE_REPDATA(__reply_base) \ + container_of(__reply_base, struct coalesce_reply_data, base) + +#define __SUPPORTED_OFFSET ETHTOOL_A_COALESCE_RX_USECS +static u32 attr_to_mask(unsigned int attr_type) +{ + return BIT(attr_type - __SUPPORTED_OFFSET); +} + +/* build time check that indices in ethtool_ops::supported_coalesce_params + * match corresponding attribute types with an offset + */ +#define __CHECK_SUPPORTED_OFFSET(x) \ + static_assert((ETHTOOL_ ## x) == \ + BIT((ETHTOOL_A_ ## x) - __SUPPORTED_OFFSET)) +__CHECK_SUPPORTED_OFFSET(COALESCE_RX_USECS); +__CHECK_SUPPORTED_OFFSET(COALESCE_RX_MAX_FRAMES); +__CHECK_SUPPORTED_OFFSET(COALESCE_RX_USECS_IRQ); +__CHECK_SUPPORTED_OFFSET(COALESCE_RX_MAX_FRAMES_IRQ); +__CHECK_SUPPORTED_OFFSET(COALESCE_TX_USECS); +__CHECK_SUPPORTED_OFFSET(COALESCE_TX_MAX_FRAMES); +__CHECK_SUPPORTED_OFFSET(COALESCE_TX_USECS_IRQ); +__CHECK_SUPPORTED_OFFSET(COALESCE_TX_MAX_FRAMES_IRQ); +__CHECK_SUPPORTED_OFFSET(COALESCE_STATS_BLOCK_USECS); +__CHECK_SUPPORTED_OFFSET(COALESCE_USE_ADAPTIVE_RX); +__CHECK_SUPPORTED_OFFSET(COALESCE_USE_ADAPTIVE_TX); +__CHECK_SUPPORTED_OFFSET(COALESCE_PKT_RATE_LOW); +__CHECK_SUPPORTED_OFFSET(COALESCE_RX_USECS_LOW); +__CHECK_SUPPORTED_OFFSET(COALESCE_RX_MAX_FRAMES_LOW); +__CHECK_SUPPORTED_OFFSET(COALESCE_TX_USECS_LOW); +__CHECK_SUPPORTED_OFFSET(COALESCE_TX_MAX_FRAMES_LOW); +__CHECK_SUPPORTED_OFFSET(COALESCE_PKT_RATE_HIGH); +__CHECK_SUPPORTED_OFFSET(COALESCE_RX_USECS_HIGH); +__CHECK_SUPPORTED_OFFSET(COALESCE_RX_MAX_FRAMES_HIGH); +__CHECK_SUPPORTED_OFFSET(COALESCE_TX_USECS_HIGH); +__CHECK_SUPPORTED_OFFSET(COALESCE_TX_MAX_FRAMES_HIGH); +__CHECK_SUPPORTED_OFFSET(COALESCE_RATE_SAMPLE_INTERVAL); + +const struct nla_policy ethnl_coalesce_get_policy[] = { + [ETHTOOL_A_COALESCE_HEADER] = + NLA_POLICY_NESTED(ethnl_header_policy), +}; + +static int coalesce_prepare_data(const struct ethnl_req_info *req_base, + struct ethnl_reply_data *reply_base, + struct genl_info *info) +{ + struct coalesce_reply_data *data = COALESCE_REPDATA(reply_base); + struct net_device *dev = reply_base->dev; + int ret; + + if (!dev->ethtool_ops->get_coalesce) + return -EOPNOTSUPP; + data->supported_params = dev->ethtool_ops->supported_coalesce_params; + ret = ethnl_ops_begin(dev); + if (ret < 0) + return ret; + ret = dev->ethtool_ops->get_coalesce(dev, &data->coalesce); + ethnl_ops_complete(dev); + + return ret; +} + +static int coalesce_reply_size(const struct ethnl_req_info *req_base, + const struct ethnl_reply_data *reply_base) +{ + return nla_total_size(sizeof(u32)) + /* _RX_USECS */ + nla_total_size(sizeof(u32)) + /* _RX_MAX_FRAMES */ + nla_total_size(sizeof(u32)) + /* _RX_USECS_IRQ */ + nla_total_size(sizeof(u32)) + /* _RX_MAX_FRAMES_IRQ */ + nla_total_size(sizeof(u32)) + /* _TX_USECS */ + nla_total_size(sizeof(u32)) + /* _TX_MAX_FRAMES */ + nla_total_size(sizeof(u32)) + /* _TX_USECS_IRQ */ + nla_total_size(sizeof(u32)) + /* _TX_MAX_FRAMES_IRQ */ + nla_total_size(sizeof(u32)) + /* _STATS_BLOCK_USECS */ + nla_total_size(sizeof(u8)) + /* _USE_ADAPTIVE_RX */ + nla_total_size(sizeof(u8)) + /* _USE_ADAPTIVE_TX */ + nla_total_size(sizeof(u32)) + /* _PKT_RATE_LOW */ + nla_total_size(sizeof(u32)) + /* _RX_USECS_LOW */ + nla_total_size(sizeof(u32)) + /* _RX_MAX_FRAMES_LOW */ + nla_total_size(sizeof(u32)) + /* _TX_USECS_LOW */ + nla_total_size(sizeof(u32)) + /* _TX_MAX_FRAMES_LOW */ + nla_total_size(sizeof(u32)) + /* _PKT_RATE_HIGH */ + nla_total_size(sizeof(u32)) + /* _RX_USECS_HIGH */ + nla_total_size(sizeof(u32)) + /* _RX_MAX_FRAMES_HIGH */ + nla_total_size(sizeof(u32)) + /* _TX_USECS_HIGH */ + nla_total_size(sizeof(u32)) + /* _TX_MAX_FRAMES_HIGH */ + nla_total_size(sizeof(u32)); /* _RATE_SAMPLE_INTERVAL */ +} + +static bool coalesce_put_u32(struct sk_buff *skb, u16 attr_type, u32 val, + u32 supported_params) +{ + if (!val && !(supported_params & attr_to_mask(attr_type))) + return false; + return nla_put_u32(skb, attr_type, val); +} + +static bool coalesce_put_bool(struct sk_buff *skb, u16 attr_type, u32 val, + u32 supported_params) +{ + if (!val && !(supported_params & attr_to_mask(attr_type))) + return false; + return nla_put_u8(skb, attr_type, !!val); +} + +static int coalesce_fill_reply(struct sk_buff *skb, + const struct ethnl_req_info *req_base, + const struct ethnl_reply_data *reply_base) +{ + const struct coalesce_reply_data *data = COALESCE_REPDATA(reply_base); + const struct ethtool_coalesce *coal = &data->coalesce; + u32 supported = data->supported_params; + + if (coalesce_put_u32(skb, ETHTOOL_A_COALESCE_RX_USECS, + coal->rx_coalesce_usecs, supported) || + coalesce_put_u32(skb, ETHTOOL_A_COALESCE_RX_MAX_FRAMES, + coal->rx_max_coalesced_frames, supported) || + coalesce_put_u32(skb, ETHTOOL_A_COALESCE_RX_USECS_IRQ, + coal->rx_coalesce_usecs_irq, supported) || + coalesce_put_u32(skb, ETHTOOL_A_COALESCE_RX_MAX_FRAMES_IRQ, + coal->rx_max_coalesced_frames_irq, supported) || + coalesce_put_u32(skb, ETHTOOL_A_COALESCE_TX_USECS, + coal->tx_coalesce_usecs, supported) || + coalesce_put_u32(skb, ETHTOOL_A_COALESCE_TX_MAX_FRAMES, + coal->tx_max_coalesced_frames, supported) || + coalesce_put_u32(skb, ETHTOOL_A_COALESCE_TX_USECS_IRQ, + coal->tx_coalesce_usecs_irq, supported) || + coalesce_put_u32(skb, ETHTOOL_A_COALESCE_TX_MAX_FRAMES_IRQ, + coal->tx_max_coalesced_frames_irq, supported) || + coalesce_put_u32(skb, ETHTOOL_A_COALESCE_STATS_BLOCK_USECS, + coal->stats_block_coalesce_usecs, supported) || + coalesce_put_bool(skb, ETHTOOL_A_COALESCE_USE_ADAPTIVE_RX, + coal->use_adaptive_rx_coalesce, supported) || + coalesce_put_bool(skb, ETHTOOL_A_COALESCE_USE_ADAPTIVE_TX, + coal->use_adaptive_tx_coalesce, supported) || + coalesce_put_u32(skb, ETHTOOL_A_COALESCE_PKT_RATE_LOW, + coal->pkt_rate_low, supported) || + coalesce_put_u32(skb, ETHTOOL_A_COALESCE_RX_USECS_LOW, + coal->rx_coalesce_usecs_low, supported) || + coalesce_put_u32(skb, ETHTOOL_A_COALESCE_RX_MAX_FRAMES_LOW, + coal->rx_max_coalesced_frames_low, supported) || + coalesce_put_u32(skb, ETHTOOL_A_COALESCE_TX_USECS_LOW, + coal->tx_coalesce_usecs_low, supported) || + coalesce_put_u32(skb, ETHTOOL_A_COALESCE_TX_MAX_FRAMES_LOW, + coal->tx_max_coalesced_frames_low, supported) || + coalesce_put_u32(skb, ETHTOOL_A_COALESCE_PKT_RATE_HIGH, + coal->pkt_rate_high, supported) || + coalesce_put_u32(skb, ETHTOOL_A_COALESCE_RX_USECS_HIGH, + coal->rx_coalesce_usecs_high, supported) || + coalesce_put_u32(skb, ETHTOOL_A_COALESCE_RX_MAX_FRAMES_HIGH, + coal->rx_max_coalesced_frames_high, supported) || + coalesce_put_u32(skb, ETHTOOL_A_COALESCE_TX_USECS_HIGH, + coal->tx_coalesce_usecs_high, supported) || + coalesce_put_u32(skb, ETHTOOL_A_COALESCE_TX_MAX_FRAMES_HIGH, + coal->tx_max_coalesced_frames_high, supported) || + coalesce_put_u32(skb, ETHTOOL_A_COALESCE_RATE_SAMPLE_INTERVAL, + coal->rate_sample_interval, supported)) + return -EMSGSIZE; + + return 0; +} + +const struct ethnl_request_ops ethnl_coalesce_request_ops = { + .request_cmd = ETHTOOL_MSG_COALESCE_GET, + .reply_cmd = ETHTOOL_MSG_COALESCE_GET_REPLY, + .hdr_attr = ETHTOOL_A_COALESCE_HEADER, + .req_info_size = sizeof(struct coalesce_req_info), + .reply_data_size = sizeof(struct coalesce_reply_data), + + .prepare_data = coalesce_prepare_data, + .reply_size = coalesce_reply_size, + .fill_reply = coalesce_fill_reply, +}; + +/* COALESCE_SET */ + +const struct nla_policy ethnl_coalesce_set_policy[] = { + [ETHTOOL_A_COALESCE_HEADER] = + NLA_POLICY_NESTED(ethnl_header_policy), + [ETHTOOL_A_COALESCE_RX_USECS] = { .type = NLA_U32 }, + [ETHTOOL_A_COALESCE_RX_MAX_FRAMES] = { .type = NLA_U32 }, + [ETHTOOL_A_COALESCE_RX_USECS_IRQ] = { .type = NLA_U32 }, + [ETHTOOL_A_COALESCE_RX_MAX_FRAMES_IRQ] = { .type = NLA_U32 }, + [ETHTOOL_A_COALESCE_TX_USECS] = { .type = NLA_U32 }, + [ETHTOOL_A_COALESCE_TX_MAX_FRAMES] = { .type = NLA_U32 }, + [ETHTOOL_A_COALESCE_TX_USECS_IRQ] = { .type = NLA_U32 }, + [ETHTOOL_A_COALESCE_TX_MAX_FRAMES_IRQ] = { .type = NLA_U32 }, + [ETHTOOL_A_COALESCE_STATS_BLOCK_USECS] = { .type = NLA_U32 }, + [ETHTOOL_A_COALESCE_USE_ADAPTIVE_RX] = { .type = NLA_U8 }, + [ETHTOOL_A_COALESCE_USE_ADAPTIVE_TX] = { .type = NLA_U8 }, + [ETHTOOL_A_COALESCE_PKT_RATE_LOW] = { .type = NLA_U32 }, + [ETHTOOL_A_COALESCE_RX_USECS_LOW] = { .type = NLA_U32 }, + [ETHTOOL_A_COALESCE_RX_MAX_FRAMES_LOW] = { .type = NLA_U32 }, + [ETHTOOL_A_COALESCE_TX_USECS_LOW] = { .type = NLA_U32 }, + [ETHTOOL_A_COALESCE_TX_MAX_FRAMES_LOW] = { .type = NLA_U32 }, + [ETHTOOL_A_COALESCE_PKT_RATE_HIGH] = { .type = NLA_U32 }, + [ETHTOOL_A_COALESCE_RX_USECS_HIGH] = { .type = NLA_U32 }, + [ETHTOOL_A_COALESCE_RX_MAX_FRAMES_HIGH] = { .type = NLA_U32 }, + [ETHTOOL_A_COALESCE_TX_USECS_HIGH] = { .type = NLA_U32 }, + [ETHTOOL_A_COALESCE_TX_MAX_FRAMES_HIGH] = { .type = NLA_U32 }, + [ETHTOOL_A_COALESCE_RATE_SAMPLE_INTERVAL] = { .type = NLA_U32 }, +}; + +int ethnl_set_coalesce(struct sk_buff *skb, struct genl_info *info) +{ + struct ethtool_coalesce coalesce = {}; + struct ethnl_req_info req_info = {}; + struct nlattr **tb = info->attrs; + const struct ethtool_ops *ops; + struct net_device *dev; + u32 supported_params; + bool mod = false; + int ret; + u16 a; + + ret = ethnl_parse_header_dev_get(&req_info, + tb[ETHTOOL_A_COALESCE_HEADER], + genl_info_net(info), info->extack, + true); + if (ret < 0) + return ret; + dev = req_info.dev; + ops = dev->ethtool_ops; + ret = -EOPNOTSUPP; + if (!ops->get_coalesce || !ops->set_coalesce) + goto out_dev; + + /* make sure that only supported parameters are present */ + supported_params = ops->supported_coalesce_params; + for (a = ETHTOOL_A_COALESCE_RX_USECS; a < __ETHTOOL_A_COALESCE_CNT; a++) + if (tb[a] && !(supported_params & attr_to_mask(a))) { + ret = -EINVAL; + NL_SET_ERR_MSG_ATTR(info->extack, tb[a], + "cannot modify an unsupported parameter"); + goto out_dev; + } + + rtnl_lock(); + ret = ethnl_ops_begin(dev); + if (ret < 0) + goto out_rtnl; + ret = ops->get_coalesce(dev, &coalesce); + if (ret < 0) + goto out_ops; + + ethnl_update_u32(&coalesce.rx_coalesce_usecs, + tb[ETHTOOL_A_COALESCE_RX_USECS], &mod); + ethnl_update_u32(&coalesce.rx_max_coalesced_frames, + tb[ETHTOOL_A_COALESCE_RX_MAX_FRAMES], &mod); + ethnl_update_u32(&coalesce.rx_coalesce_usecs_irq, + tb[ETHTOOL_A_COALESCE_RX_USECS_IRQ], &mod); + ethnl_update_u32(&coalesce.rx_max_coalesced_frames_irq, + tb[ETHTOOL_A_COALESCE_RX_MAX_FRAMES_IRQ], &mod); + ethnl_update_u32(&coalesce.tx_coalesce_usecs, + tb[ETHTOOL_A_COALESCE_TX_USECS], &mod); + ethnl_update_u32(&coalesce.tx_max_coalesced_frames, + tb[ETHTOOL_A_COALESCE_TX_MAX_FRAMES], &mod); + ethnl_update_u32(&coalesce.tx_coalesce_usecs_irq, + tb[ETHTOOL_A_COALESCE_TX_USECS_IRQ], &mod); + ethnl_update_u32(&coalesce.tx_max_coalesced_frames_irq, + tb[ETHTOOL_A_COALESCE_TX_MAX_FRAMES_IRQ], &mod); + ethnl_update_u32(&coalesce.stats_block_coalesce_usecs, + tb[ETHTOOL_A_COALESCE_STATS_BLOCK_USECS], &mod); + ethnl_update_bool32(&coalesce.use_adaptive_rx_coalesce, + tb[ETHTOOL_A_COALESCE_USE_ADAPTIVE_RX], &mod); + ethnl_update_bool32(&coalesce.use_adaptive_tx_coalesce, + tb[ETHTOOL_A_COALESCE_USE_ADAPTIVE_TX], &mod); + ethnl_update_u32(&coalesce.pkt_rate_low, + tb[ETHTOOL_A_COALESCE_PKT_RATE_LOW], &mod); + ethnl_update_u32(&coalesce.rx_coalesce_usecs_low, + tb[ETHTOOL_A_COALESCE_RX_USECS_LOW], &mod); + ethnl_update_u32(&coalesce.rx_max_coalesced_frames_low, + tb[ETHTOOL_A_COALESCE_RX_MAX_FRAMES_LOW], &mod); + ethnl_update_u32(&coalesce.tx_coalesce_usecs_low, + tb[ETHTOOL_A_COALESCE_TX_USECS_LOW], &mod); + ethnl_update_u32(&coalesce.tx_max_coalesced_frames_low, + tb[ETHTOOL_A_COALESCE_TX_MAX_FRAMES_LOW], &mod); + ethnl_update_u32(&coalesce.pkt_rate_high, + tb[ETHTOOL_A_COALESCE_PKT_RATE_HIGH], &mod); + ethnl_update_u32(&coalesce.rx_coalesce_usecs_high, + tb[ETHTOOL_A_COALESCE_RX_USECS_HIGH], &mod); + ethnl_update_u32(&coalesce.rx_max_coalesced_frames_high, + tb[ETHTOOL_A_COALESCE_RX_MAX_FRAMES_HIGH], &mod); + ethnl_update_u32(&coalesce.tx_coalesce_usecs_high, + tb[ETHTOOL_A_COALESCE_TX_USECS_HIGH], &mod); + ethnl_update_u32(&coalesce.tx_max_coalesced_frames_high, + tb[ETHTOOL_A_COALESCE_TX_MAX_FRAMES_HIGH], &mod); + ethnl_update_u32(&coalesce.rate_sample_interval, + tb[ETHTOOL_A_COALESCE_RATE_SAMPLE_INTERVAL], &mod); + ret = 0; + if (!mod) + goto out_ops; + + ret = dev->ethtool_ops->set_coalesce(dev, &coalesce); + if (ret < 0) + goto out_ops; + ethtool_notify(dev, ETHTOOL_MSG_COALESCE_NTF, NULL); + +out_ops: + ethnl_ops_complete(dev); +out_rtnl: + rtnl_unlock(); +out_dev: + dev_put(dev); + return ret; +} -- cgit v1.2.3