From: Michal Kubecek <mkubecek@suse.cz>
Date: Sat, 28 Mar 2020 00:01:08 +0100
Subject: ethtool: provide coalescing parameters with COALESCE_GET request
Patch-mainline: v5.7-rc1
Git-commit: 217275453b3e1fc5abf2a8cc2e231e1daa237d99
References: bsc#1176447
Implement COALESCE_GET request to get coalescing parameters of a network
device. These are traditionally available via ETHTOOL_GCOALESCE ioctl
request. This commit adds only support for device coalescing parameters,
not per queue coalescing parameters.
Omit attributes with zero values unless they are declared as supported
(i.e. the corresponding bit in ethtool_ops::supported_coalesce_params is
set).
SLE15-SP3: without mainline commit 9000edb71ab2 ("net: ethtool: require
drivers to set supported_coalesce_params"), we need to handle zero
supported_params as "all coalescing parameters are supported".
Signed-off-by: Michal Kubecek <mkubecek@suse.cz>
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
Documentation/networking/ethtool-netlink.rst | 48 ++++-
include/uapi/linux/ethtool_netlink.h | 35 +++
net/ethtool/Makefile | 2 +-
net/ethtool/coalesce.c | 216 +++++++++++++++++++
net/ethtool/netlink.c | 8 +
net/ethtool/netlink.h | 1 +
6 files changed, 308 insertions(+), 2 deletions(-)
create mode 100644 net/ethtool/coalesce.c
--- a/Documentation/networking/ethtool-netlink.rst
+++ b/Documentation/networking/ethtool-netlink.rst
@@ -197,6 +197,7 @@ Userspace to kernel:
``ETHTOOL_MSG_RINGS_SET`` set ring sizes
``ETHTOOL_MSG_CHANNELS_GET`` get channel counts
``ETHTOOL_MSG_CHANNELS_SET`` set channel counts
+ ``ETHTOOL_MSG_COALESCE_GET`` get coalescing parameters
===================================== ================================
Kernel to userspace:
@@ -221,6 +222,7 @@ Kernel to userspace:
``ETHTOOL_MSG_RINGS_NTF`` ring sizes
``ETHTOOL_MSG_CHANNELS_GET_REPLY`` channel counts
``ETHTOOL_MSG_CHANNELS_NTF`` channel counts
+ ``ETHTOOL_MSG_COALESCE_GET_REPLY`` coalescing parameters
===================================== =================================
``GET`` requests are sent by userspace applications to retrieve device
@@ -745,6 +747,50 @@ driver. Driver may impose additional constraints and may not suspport all
attributes.
+COALESCE_GET
+============
+
+Gets coalescing parameters like ``ETHTOOL_GCOALESCE`` ioctl request.
+
+Request contents:
+
+ ==================================== ====== ==========================
+ ``ETHTOOL_A_COALESCE_HEADER`` nested request header
+ ==================================== ====== ==========================
+
+Kernel response contents:
+
+ =========================================== ====== =======================
+ ``ETHTOOL_A_COALESCE_HEADER`` nested reply header
+ ``ETHTOOL_A_COALESCE_RX_USECS`` u32 delay (us), normal Rx
+ ``ETHTOOL_A_COALESCE_RX_MAX_FRAMES`` u32 max packets, normal Rx
+ ``ETHTOOL_A_COALESCE_RX_USECS_IRQ`` u32 delay (us), Rx in IRQ
+ ``ETHTOOL_A_COALESCE_RX_MAX_FRAMES_IRQ`` u32 max packets, Rx in IRQ
+ ``ETHTOOL_A_COALESCE_TX_USECS`` u32 delay (us), normal Tx
+ ``ETHTOOL_A_COALESCE_TX_MAX_FRAMES`` u32 max packets, normal Tx
+ ``ETHTOOL_A_COALESCE_TX_USECS_IRQ`` u32 delay (us), Tx in IRQ
+ ``ETHTOOL_A_COALESCE_TX_MAX_FRAMES_IRQ`` u32 IRQ packets, Tx in IRQ
+ ``ETHTOOL_A_COALESCE_STATS_BLOCK_USECS`` u32 delay of stats update
+ ``ETHTOOL_A_COALESCE_USE_ADAPTIVE_RX`` bool adaptive Rx coalesce
+ ``ETHTOOL_A_COALESCE_USE_ADAPTIVE_TX`` bool adaptive Tx coalesce
+ ``ETHTOOL_A_COALESCE_PKT_RATE_LOW`` u32 threshold for low rate
+ ``ETHTOOL_A_COALESCE_RX_USECS_LOW`` u32 delay (us), low Rx
+ ``ETHTOOL_A_COALESCE_RX_MAX_FRAMES_LOW`` u32 max packets, low Rx
+ ``ETHTOOL_A_COALESCE_TX_USECS_LOW`` u32 delay (us), low Tx
+ ``ETHTOOL_A_COALESCE_TX_MAX_FRAMES_LOW`` u32 max packets, low Tx
+ ``ETHTOOL_A_COALESCE_PKT_RATE_HIGH`` u32 threshold for high rate
+ ``ETHTOOL_A_COALESCE_RX_USECS_HIGH`` u32 delay (us), high Rx
+ ``ETHTOOL_A_COALESCE_RX_MAX_FRAMES_HIGH`` u32 max packets, high Rx
+ ``ETHTOOL_A_COALESCE_TX_USECS_HIGH`` u32 delay (us), high Tx
+ ``ETHTOOL_A_COALESCE_TX_MAX_FRAMES_HIGH`` u32 max packets, high Tx
+ ``ETHTOOL_A_COALESCE_RATE_SAMPLE_INTERVAL`` u32 rate sampling interval
+ =========================================== ====== =======================
+
+Attributes are only included in reply if their value is not zero or the
+corresponding bit in ``ethtool_ops::supported_coalesce_params`` is set (i.e.
+they are declared as supported by driver).
+
+
Request translation
===================
@@ -769,7 +815,7 @@ have their netlink replacement yet.
``ETHTOOL_GLINK`` ``ETHTOOL_MSG_LINKSTATE_GET``
``ETHTOOL_GEEPROM`` n/a
``ETHTOOL_SEEPROM`` n/a
- ``ETHTOOL_GCOALESCE`` n/a
+ ``ETHTOOL_GCOALESCE`` ``ETHTOOL_MSG_COALESCE_GET``
``ETHTOOL_SCOALESCE`` n/a
``ETHTOOL_GRINGPARAM`` ``ETHTOOL_MSG_RINGS_GET``
``ETHTOOL_SRINGPARAM`` ``ETHTOOL_MSG_RINGS_SET``
--- a/include/uapi/linux/ethtool_netlink.h
+++ b/include/uapi/linux/ethtool_netlink.h
@@ -32,6 +32,7 @@ enum {
ETHTOOL_MSG_RINGS_SET,
ETHTOOL_MSG_CHANNELS_GET,
ETHTOOL_MSG_CHANNELS_SET,
+ ETHTOOL_MSG_COALESCE_GET,
/* add new constants above here */
__ETHTOOL_MSG_USER_CNT,
@@ -60,6 +61,7 @@ enum {
ETHTOOL_MSG_RINGS_NTF,
ETHTOOL_MSG_CHANNELS_GET_REPLY,
ETHTOOL_MSG_CHANNELS_NTF,
+ ETHTOOL_MSG_COALESCE_GET_REPLY,
/* add new constants above here */
__ETHTOOL_MSG_KERNEL_CNT,
@@ -310,6 +312,39 @@ enum {
ETHTOOL_A_CHANNELS_MAX = (__ETHTOOL_A_CHANNELS_CNT - 1)
};
+/* COALESCE */
+
+enum {
+ ETHTOOL_A_COALESCE_UNSPEC,
+ ETHTOOL_A_COALESCE_HEADER, /* nest - _A_HEADER_* */
+ ETHTOOL_A_COALESCE_RX_USECS, /* u32 */
+ ETHTOOL_A_COALESCE_RX_MAX_FRAMES, /* u32 */
+ ETHTOOL_A_COALESCE_RX_USECS_IRQ, /* u32 */
+ ETHTOOL_A_COALESCE_RX_MAX_FRAMES_IRQ, /* u32 */
+ ETHTOOL_A_COALESCE_TX_USECS, /* u32 */
+ ETHTOOL_A_COALESCE_TX_MAX_FRAMES, /* u32 */
+ ETHTOOL_A_COALESCE_TX_USECS_IRQ, /* u32 */
+ ETHTOOL_A_COALESCE_TX_MAX_FRAMES_IRQ, /* u32 */
+ ETHTOOL_A_COALESCE_STATS_BLOCK_USECS, /* u32 */
+ ETHTOOL_A_COALESCE_USE_ADAPTIVE_RX, /* u8 */
+ ETHTOOL_A_COALESCE_USE_ADAPTIVE_TX, /* u8 */
+ ETHTOOL_A_COALESCE_PKT_RATE_LOW, /* u32 */
+ ETHTOOL_A_COALESCE_RX_USECS_LOW, /* u32 */
+ ETHTOOL_A_COALESCE_RX_MAX_FRAMES_LOW, /* u32 */
+ ETHTOOL_A_COALESCE_TX_USECS_LOW, /* u32 */
+ ETHTOOL_A_COALESCE_TX_MAX_FRAMES_LOW, /* u32 */
+ ETHTOOL_A_COALESCE_PKT_RATE_HIGH, /* u32 */
+ ETHTOOL_A_COALESCE_RX_USECS_HIGH, /* u32 */
+ ETHTOOL_A_COALESCE_RX_MAX_FRAMES_HIGH, /* u32 */
+ ETHTOOL_A_COALESCE_TX_USECS_HIGH, /* u32 */
+ ETHTOOL_A_COALESCE_TX_MAX_FRAMES_HIGH, /* u32 */
+ ETHTOOL_A_COALESCE_RATE_SAMPLE_INTERVAL, /* u32 */
+
+ /* add new constants above here */
+ __ETHTOOL_A_COALESCE_CNT,
+ ETHTOOL_A_COALESCE_MAX = (__ETHTOOL_A_COALESCE_CNT - 1)
+};
+
/* generic netlink info */
#define ETHTOOL_GENL_NAME "ethtool"
#define ETHTOOL_GENL_VERSION 1
--- 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
--- /dev/null
+++ b/net/ethtool/coalesce.c
@@ -0,0 +1,216 @@
+// 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 && likely(supported_params) &&
+ !(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 && likely(supported_params) &&
+ !(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,
+};
--- 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] = ðnl_privflags_request_ops,
[ETHTOOL_MSG_RINGS_GET] = ðnl_rings_request_ops,
[ETHTOOL_MSG_CHANNELS_GET] = ðnl_channels_request_ops,
+ [ETHTOOL_MSG_COALESCE_GET] = ðnl_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[] = {
--- 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);