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-rw-r--r--net/ethtool/Makefile2
-rw-r--r--net/ethtool/coalesce.c214
-rw-r--r--net/ethtool/netlink.c8
-rw-r--r--net/ethtool/netlink.h1
4 files changed, 224 insertions, 1 deletions
diff --git a/net/ethtool/Makefile b/net/ethtool/Makefile
index b0bd3decad02..7f7f40e03d16 100644
--- a/net/ethtool/Makefile
+++ b/net/ethtool/Makefile
@@ -6,4 +6,4 @@ obj-$(CONFIG_ETHTOOL_NETLINK) += ethtool_nl.o
ethtool_nl-y := netlink.o bitset.o strset.o linkinfo.o linkmodes.o \
linkstate.o debug.o wol.o features.o privflags.o rings.o \
- channels.o
+ channels.o coalesce.o
diff --git a/net/ethtool/coalesce.c b/net/ethtool/coalesce.c
new file mode 100644
index 000000000000..ba5f2cec4ac4
--- /dev/null
+++ b/net/ethtool/coalesce.c
@@ -0,0 +1,214 @@
+// 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);
+
+static const struct nla_policy
+coalesce_get_policy[ETHTOOL_A_COALESCE_MAX + 1] = {
+ [ETHTOOL_A_COALESCE_UNSPEC] = { .type = NLA_REJECT },
+ [ETHTOOL_A_COALESCE_HEADER] = { .type = NLA_NESTED },
+ [ETHTOOL_A_COALESCE_RX_USECS] = { .type = NLA_REJECT },
+ [ETHTOOL_A_COALESCE_RX_MAX_FRAMES] = { .type = NLA_REJECT },
+ [ETHTOOL_A_COALESCE_RX_USECS_IRQ] = { .type = NLA_REJECT },
+ [ETHTOOL_A_COALESCE_RX_MAX_FRAMES_IRQ] = { .type = NLA_REJECT },
+ [ETHTOOL_A_COALESCE_TX_USECS] = { .type = NLA_REJECT },
+ [ETHTOOL_A_COALESCE_TX_MAX_FRAMES] = { .type = NLA_REJECT },
+ [ETHTOOL_A_COALESCE_TX_USECS_IRQ] = { .type = NLA_REJECT },
+ [ETHTOOL_A_COALESCE_TX_MAX_FRAMES_IRQ] = { .type = NLA_REJECT },
+ [ETHTOOL_A_COALESCE_STATS_BLOCK_USECS] = { .type = NLA_REJECT },
+ [ETHTOOL_A_COALESCE_USE_ADAPTIVE_RX] = { .type = NLA_REJECT },
+ [ETHTOOL_A_COALESCE_USE_ADAPTIVE_TX] = { .type = NLA_REJECT },
+ [ETHTOOL_A_COALESCE_PKT_RATE_LOW] = { .type = NLA_REJECT },
+ [ETHTOOL_A_COALESCE_RX_USECS_LOW] = { .type = NLA_REJECT },
+ [ETHTOOL_A_COALESCE_RX_MAX_FRAMES_LOW] = { .type = NLA_REJECT },
+ [ETHTOOL_A_COALESCE_TX_USECS_LOW] = { .type = NLA_REJECT },
+ [ETHTOOL_A_COALESCE_TX_MAX_FRAMES_LOW] = { .type = NLA_REJECT },
+ [ETHTOOL_A_COALESCE_PKT_RATE_HIGH] = { .type = NLA_REJECT },
+ [ETHTOOL_A_COALESCE_RX_USECS_HIGH] = { .type = NLA_REJECT },
+ [ETHTOOL_A_COALESCE_RX_MAX_FRAMES_HIGH] = { .type = NLA_REJECT },
+ [ETHTOOL_A_COALESCE_TX_USECS_HIGH] = { .type = NLA_REJECT },
+ [ETHTOOL_A_COALESCE_TX_MAX_FRAMES_HIGH] = { .type = NLA_REJECT },
+ [ETHTOOL_A_COALESCE_RATE_SAMPLE_INTERVAL] = { .type = NLA_REJECT },
+};
+
+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,
+ .max_attr = ETHTOOL_A_COALESCE_MAX,
+ .req_info_size = sizeof(struct coalesce_req_info),
+ .reply_data_size = sizeof(struct coalesce_reply_data),
+ .request_policy = coalesce_get_policy,
+
+ .prepare_data = coalesce_prepare_data,
+ .reply_size = coalesce_reply_size,
+ .fill_reply = coalesce_fill_reply,
+};
diff --git a/net/ethtool/netlink.c b/net/ethtool/netlink.c
index 71855bdd3b38..3db6ad69ebc9 100644
--- a/net/ethtool/netlink.c
+++ b/net/ethtool/netlink.c
@@ -227,6 +227,7 @@ ethnl_default_requests[__ETHTOOL_MSG_USER_CNT] = {
[ETHTOOL_MSG_PRIVFLAGS_GET] = &ethnl_privflags_request_ops,
[ETHTOOL_MSG_RINGS_GET] = &ethnl_rings_request_ops,
[ETHTOOL_MSG_CHANNELS_GET] = &ethnl_channels_request_ops,
+ [ETHTOOL_MSG_COALESCE_GET] = &ethnl_coalesce_request_ops,
};
static struct ethnl_dump_ctx *ethnl_dump_context(struct netlink_callback *cb)
@@ -786,6 +787,13 @@ static const struct genl_ops ethtool_genl_ops[] = {
.flags = GENL_UNS_ADMIN_PERM,
.doit = ethnl_set_channels,
},
+ {
+ .cmd = ETHTOOL_MSG_COALESCE_GET,
+ .doit = ethnl_default_doit,
+ .start = ethnl_default_start,
+ .dumpit = ethnl_default_dumpit,
+ .done = ethnl_default_done,
+ },
};
static const struct genl_multicast_group ethtool_nl_mcgrps[] = {
diff --git a/net/ethtool/netlink.h b/net/ethtool/netlink.h
index 45aad99a6021..8b8991867ee5 100644
--- a/net/ethtool/netlink.h
+++ b/net/ethtool/netlink.h
@@ -341,6 +341,7 @@ extern const struct ethnl_request_ops ethnl_features_request_ops;
extern const struct ethnl_request_ops ethnl_privflags_request_ops;
extern const struct ethnl_request_ops ethnl_rings_request_ops;
extern const struct ethnl_request_ops ethnl_channels_request_ops;
+extern const struct ethnl_request_ops ethnl_coalesce_request_ops;
int ethnl_set_linkinfo(struct sk_buff *skb, struct genl_info *info);
int ethnl_set_linkmodes(struct sk_buff *skb, struct genl_info *info);
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-17 11:06:43 +0000