The NetDIM library, currently leveraged by an array of NICs, delivers
excellent acceleration benefits. Nevertheless, NICs vary significantly
in their dim profile list prerequisites.
Specifically, virtio-net backends may present diverse sw or hw device
implementation, making a one-size-fits-all parameter list impractical.
On Alibaba Cloud, the virtio DPU's performance under the default DIM
profile falls short of expectations, partly due to a mismatch in
parameter configuration.
I also noticed that ice/idpf/ena and other NICs have customized
profilelist or placed some restrictions on dim capabilities.
Motivated by this, I tried adding new params for "ethtool -C" that provides
a per-device control to modify and access a device's interrupt parameters.
Usage
========
1. Query the currently customized list of the device
$ ethtool -c ethx
...
rx-eqe-profile:
{.usec = 1, .pkts = 256, .comps = 0,},
{.usec = 8, .pkts = 256, .comps = 0,},
{.usec = 64, .pkts = 256, .comps = 0,},
{.usec = 128, .pkts = 256, .comps = 0,},
{.usec = 256, .pkts = 256, .comps = 0,}
rx-cqe-profile: n/a
tx-eqe-profile: n/a
tx-cqe-profile: n/a
2. Tune
$ ethtool -C ethx rx-eqe-profile 1,1,0_2,2,0_3,3,0_4,4,0_5,5,0
$ ethtool -c ethx
...
rx-eqe-profile:
{.usec = 1, .pkts = 1, .comps = 0,},
{.usec = 2, .pkts = 2, .comps = 0,},
{.usec = 3, .pkts = 3, .comps = 0,},
{.usec = 4, .pkts = 4, .comps = 0,},
{.usec = 5, .pkts = 5, .comps = 0,}
rx-cqe-profile: n/a
tx-eqe-profile: n/a
tx-cqe-profile: n/a
3. Hint
If the device does not support some type of customized dim
profiles, the corresponding "n/a" will display.
Signed-off-by: Heng Qi <hengqi@xxxxxxxxxxxxxxxxx>
---
Documentation/netlink/specs/ethtool.yaml | 33 +++++
Documentation/networking/ethtool-netlink.rst | 8 ++
include/linux/ethtool.h | 12 +-
include/linux/netdevice.h | 15 +++
include/uapi/linux/ethtool_netlink.h | 24 ++++
net/core/dev.c | 63 +++++++++
net/ethtool/coalesce.c | 184 ++++++++++++++++++++++++++-
7 files changed, 336 insertions(+), 3 deletions(-)
diff --git a/Documentation/netlink/specs/ethtool.yaml b/Documentation/netlink/specs/ethtool.yaml
index 87ae7b3..1a560ff 100644
--- a/Documentation/netlink/specs/ethtool.yaml
+++ b/Documentation/netlink/specs/ethtool.yaml
@@ -413,6 +413,18 @@ attribute-sets:
-
name: combined-count
type: u32
+ -
+ name: moderation
+ attributes:
+ -
+ name: usec
+ type: u16
+ -
+ name: pkts
+ type: u16
+ -
+ name: comps
+ type: u16
-
name: coalesce
@@ -502,6 +514,23 @@ attribute-sets:
-
name: tx-aggr-time-usecs
type: u32
+ -
+ name: rx-eqe-profile
+ type: nest
+ nested-attributes: moderation
+ -
+ name: rx-cqe-profile
+ type: nest
+ nested-attributes: moderation
+ -
+ name: tx-eqe-profile
+ type: nest
+ nested-attributes: moderation
+ -
+ name: tx-cqe-profile
+ type: nest
+ nested-attributes: moderation
+
-
name: pause-stat
attributes:
@@ -1313,6 +1342,10 @@ operations:
- tx-aggr-max-bytes
- tx-aggr-max-frames
- tx-aggr-time-usecs
+ - rx-eqe-profile
+ - rx-cqe-profile
+ - tx-eqe-profile
+ - tx-cqe-profile
dump: *coalesce-get-op
-
name: coalesce-set
diff --git a/Documentation/networking/ethtool-netlink.rst b/Documentation/networking/ethtool-netlink.rst
index 5dc42f7..4d9eecf 100644
--- a/Documentation/networking/ethtool-netlink.rst
+++ b/Documentation/networking/ethtool-netlink.rst
@@ -1040,6 +1040,10 @@ Kernel response contents:
``ETHTOOL_A_COALESCE_TX_AGGR_MAX_BYTES`` u32 max aggr size, Tx
``ETHTOOL_A_COALESCE_TX_AGGR_MAX_FRAMES`` u32 max aggr packets, Tx
``ETHTOOL_A_COALESCE_TX_AGGR_TIME_USECS`` u32 time (us), aggr, Tx
+ ``ETHTOOL_A_COALESCE_RX_EQE_PROFILE`` nested profile of DIM EQE, Rx
+ ``ETHTOOL_A_COALESCE_RX_CQE_PROFILE`` nested profile of DIM CQE, Rx
+ ``ETHTOOL_A_COALESCE_TX_EQE_PROFILE`` nested profile of DIM EQE, Tx
+ ``ETHTOOL_A_COALESCE_TX_CQE_PROFILE`` nested profile of DIM CQE, Tx
=========================================== ====== =======================
Attributes are only included in reply if their value is not zero or the
@@ -1105,6 +1109,10 @@ Request contents:
``ETHTOOL_A_COALESCE_TX_AGGR_MAX_BYTES`` u32 max aggr size, Tx
``ETHTOOL_A_COALESCE_TX_AGGR_MAX_FRAMES`` u32 max aggr packets, Tx
``ETHTOOL_A_COALESCE_TX_AGGR_TIME_USECS`` u32 time (us), aggr, Tx
+ ``ETHTOOL_A_COALESCE_RX_EQE_PROFILE`` nested profile of DIM EQE, Rx
+ ``ETHTOOL_A_COALESCE_RX_CQE_PROFILE`` nested profile of DIM CQE, Rx
+ ``ETHTOOL_A_COALESCE_TX_EQE_PROFILE`` nested profile of DIM EQE, Tx
+ ``ETHTOOL_A_COALESCE_TX_CQE_PROFILE`` nested profile of DIM CQE, Tx
=========================================== ====== =======================
Request is rejected if it attributes declared as unsupported by driver (i.e.
diff --git a/include/linux/ethtool.h b/include/linux/ethtool.h
index 6fd9107..1dcfbe5 100644
--- a/include/linux/ethtool.h
+++ b/include/linux/ethtool.h
@@ -18,6 +18,7 @@
#include <linux/if_ether.h>
#include <linux/netlink.h>
#include <uapi/linux/ethtool.h>
+#include <linux/dim.h>
struct compat_ethtool_rx_flow_spec {
u32 flow_type;
@@ -284,7 +285,11 @@ bool ethtool_convert_link_mode_to_legacy_u32(u32 *legacy_u32,
#define ETHTOOL_COALESCE_TX_AGGR_MAX_BYTES BIT(24)
#define ETHTOOL_COALESCE_TX_AGGR_MAX_FRAMES BIT(25)
#define ETHTOOL_COALESCE_TX_AGGR_TIME_USECS BIT(26)
-#define ETHTOOL_COALESCE_ALL_PARAMS GENMASK(26, 0)
+#define ETHTOOL_COALESCE_RX_EQE_PROFILE BIT(27)
+#define ETHTOOL_COALESCE_RX_CQE_PROFILE BIT(28)
+#define ETHTOOL_COALESCE_TX_EQE_PROFILE BIT(29)
+#define ETHTOOL_COALESCE_TX_CQE_PROFILE BIT(30)
+#define ETHTOOL_COALESCE_ALL_PARAMS GENMASK(30, 0)
#define ETHTOOL_COALESCE_USECS \
(ETHTOOL_COALESCE_RX_USECS | ETHTOOL_COALESCE_TX_USECS)
@@ -316,6 +321,11 @@ bool ethtool_convert_link_mode_to_legacy_u32(u32 *legacy_u32,
(ETHTOOL_COALESCE_TX_AGGR_MAX_BYTES | \
ETHTOOL_COALESCE_TX_AGGR_MAX_FRAMES | \
ETHTOOL_COALESCE_TX_AGGR_TIME_USECS)
+#define ETHTOOL_COALESCE_PROFILE \
+ (ETHTOOL_COALESCE_RX_EQE_PROFILE | \
+ ETHTOOL_COALESCE_RX_CQE_PROFILE | \
+ ETHTOOL_COALESCE_TX_EQE_PROFILE | \
+ ETHTOOL_COALESCE_TX_CQE_PROFILE)
#define ETHTOOL_STAT_NOT_SET (~0ULL)
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index d45f330..d2f499a 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -48,6 +48,7 @@
#include <uapi/linux/netdev.h>
#include <linux/hashtable.h>
#include <linux/rbtree.h>
+#include <linux/dim.h>
#include <net/net_trackers.h>
#include <net/net_debug.h>
#include <net/dropreason-core.h>
@@ -1649,6 +1650,9 @@ struct net_device_ops {
* @IFF_SEE_ALL_HWTSTAMP_REQUESTS: device wants to see calls to
* ndo_hwtstamp_set() for all timestamp requests regardless of source,
* even if those aren't HWTSTAMP_SOURCE_NETDEV.
+ * @IFF_PROFILE_USEC: device supports adjusting the DIM profile's usec field
+ * @IFF_PROFILE_PKTS: device supports adjusting the DIM profile's pkts field
+ * @IFF_PROFILE_COMPS: device supports adjusting the DIM profile's comps field
*/
enum netdev_priv_flags {
IFF_802_1Q_VLAN = 1<<0,
@@ -1685,6 +1689,9 @@ enum netdev_priv_flags {
IFF_TX_SKB_NO_LINEAR = BIT_ULL(31),
IFF_CHANGE_PROTO_DOWN = BIT_ULL(32),
IFF_SEE_ALL_HWTSTAMP_REQUESTS = BIT_ULL(33),
+ IFF_PROFILE_USEC = BIT_ULL(34),
+ IFF_PROFILE_PKTS = BIT_ULL(35),
+ IFF_PROFILE_COMPS = BIT_ULL(36),
};
#define IFF_802_1Q_VLAN IFF_802_1Q_VLAN
@@ -2400,6 +2407,14 @@ struct net_device {
/** @page_pools: page pools created for this netdevice */
struct hlist_head page_pools;
#endif
+
+#if IS_ENABLED(CONFIG_DIMLIB)
+ /* DIM profile lists for different dim cq modes */
+ struct dim_cq_moder *rx_eqe_profile;
+ struct dim_cq_moder *rx_cqe_profile;
+ struct dim_cq_moder *tx_eqe_profile;
+ struct dim_cq_moder *tx_cqe_profile;
+#endif
};
#define to_net_dev(d) container_of(d, struct net_device, dev)
diff --git a/include/uapi/linux/ethtool_netlink.h b/include/uapi/linux/ethtool_netlink.h
index 23e225f..81c6d9e 100644
--- a/include/uapi/linux/ethtool_netlink.h
+++ b/include/uapi/linux/ethtool_netlink.h
@@ -416,12 +416,36 @@ enum {
ETHTOOL_A_COALESCE_TX_AGGR_MAX_BYTES, /* u32 */
ETHTOOL_A_COALESCE_TX_AGGR_MAX_FRAMES, /* u32 */
ETHTOOL_A_COALESCE_TX_AGGR_TIME_USECS, /* u32 */
+ ETHTOOL_A_COALESCE_RX_EQE_PROFILE, /* nest - _A_MODERATIONS_MODERATION */
+ ETHTOOL_A_COALESCE_RX_CQE_PROFILE, /* nest - _A_MODERATIONS_MODERATION */
+ ETHTOOL_A_COALESCE_TX_EQE_PROFILE, /* nest - _A_MODERATIONS_MODERATION */
+ ETHTOOL_A_COALESCE_TX_CQE_PROFILE, /* nest - _A_MODERATIONS_MODERATION */
/* add new constants above here */
__ETHTOOL_A_COALESCE_CNT,
ETHTOOL_A_COALESCE_MAX = (__ETHTOOL_A_COALESCE_CNT - 1)
};
+enum {
+ ETHTOOL_A_MODERATIONS_UNSPEC,
+ ETHTOOL_A_MODERATIONS_MODERATION, /* nest, _A_MODERATION_* */
+
+ /* add new constants above here */
+ __ETHTOOL_A_MODERATIONS_CNT,
+ ETHTOOL_A_MODERATIONS_MAX = (__ETHTOOL_A_MODERATIONS_CNT - 1)
+};
+
+enum {
+ ETHTOOL_A_MODERATION_UNSPEC,
+ ETHTOOL_A_MODERATION_USEC, /* u16 */
+ ETHTOOL_A_MODERATION_PKTS, /* u16 */
+ ETHTOOL_A_MODERATION_COMPS, /* u16 */
+
+ /* add new constants above here */
+ __ETHTOOL_A_MODERATION_CNT,
+ ETHTOOL_A_MODERATION_MAX = (__ETHTOOL_A_MODERATION_CNT - 1)
+};
+
/* PAUSE */
enum {
diff --git a/net/core/dev.c b/net/core/dev.c
index 854a3a2..bc38f33 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -154,6 +154,7 @@
#include <linux/pm_runtime.h>
#include <linux/prandom.h>
#include <linux/once_lite.h>
+#include <linux/ethtool.h>
#include <net/netdev_rx_queue.h>
#include <net/page_pool/types.h>
#include <net/page_pool/helpers.h>
@@ -10229,6 +10230,42 @@ static void netdev_do_free_pcpu_stats(struct net_device *dev)
}
}
+static int dev_dim_profile_init(struct net_device *dev)
+{
+ int length = NET_DIM_PARAMS_NUM_PROFILES * sizeof(*dev->rx_eqe_profile);
+ u32 supported = dev->ethtool_ops->supported_coalesce_params;
+
+ if (!(dev->priv_flags & (IFF_PROFILE_USEC | IFF_PROFILE_PKTS | IFF_PROFILE_COMPS)))
+ return 0;
+
+ if (supported & ETHTOOL_COALESCE_RX_EQE_PROFILE) {
+ dev->rx_eqe_profile = kzalloc(length, GFP_KERNEL);
+ if (!dev->rx_eqe_profile)
+ return -ENOMEM;
+ memcpy(dev->rx_eqe_profile, rx_profile[0], length);
+ }
+ if (supported & ETHTOOL_COALESCE_RX_CQE_PROFILE) {
+ dev->rx_cqe_profile = kzalloc(length, GFP_KERNEL);
+ if (!dev->rx_cqe_profile)
+ return -ENOMEM;
+ memcpy(dev->rx_cqe_profile, rx_profile[1], length);
+ }
+ if (supported & ETHTOOL_COALESCE_TX_EQE_PROFILE) {
+ dev->tx_eqe_profile = kzalloc(length, GFP_KERNEL);
+ if (!dev->tx_eqe_profile)
+ return -ENOMEM;
+ memcpy(dev->tx_eqe_profile, tx_profile[0], length);
+ }
+ if (supported & ETHTOOL_COALESCE_TX_CQE_PROFILE) {
+ dev->tx_cqe_profile = kzalloc(length, GFP_KERNEL);
+ if (!dev->tx_cqe_profile)
+ return -ENOMEM;
+ memcpy(dev->tx_cqe_profile, tx_profile[1], length);
+ }
+
+ return 0;
+}
+
/**
* register_netdevice() - register a network device
* @dev: device to register
@@ -10258,6 +10295,10 @@ int register_netdevice(struct net_device *dev)
if (ret)
return ret;
+ ret = dev_dim_profile_init(dev);
+ if (ret)
+ return ret;
+
spin_lock_init(&dev->addr_list_lock);
netdev_set_addr_lockdep_class(dev);
@@ -11011,6 +11052,26 @@ struct net_device *alloc_netdev_mqs(int sizeof_priv, const char *name,
}
EXPORT_SYMBOL(alloc_netdev_mqs);
+static void netif_free_profile(struct net_device *dev)
+{
+ u32 supported = dev->ethtool_ops->supported_coalesce_params;
+
+ if (!(dev->priv_flags & (IFF_PROFILE_USEC | IFF_PROFILE_PKTS | IFF_PROFILE_COMPS)))
+ return;
+
+ if (supported & ETHTOOL_COALESCE_RX_EQE_PROFILE)
+ kfree(dev->rx_eqe_profile);
+
+ if (supported & ETHTOOL_COALESCE_RX_CQE_PROFILE)
+ kfree(dev->rx_cqe_profile);
+
+ if (supported & ETHTOOL_COALESCE_TX_EQE_PROFILE)
+ kfree(dev->tx_eqe_profile);
+
+ if (supported & ETHTOOL_COALESCE_TX_CQE_PROFILE)
+ kfree(dev->tx_cqe_profile);
+}
+
/**
* free_netdev - free network device
* @dev: device
@@ -11036,6 +11097,8 @@ void free_netdev(struct net_device *dev)
return;
}
+ netif_free_profile(dev);
+
netif_free_tx_queues(dev);
netif_free_rx_queues(dev);
diff --git a/net/ethtool/coalesce.c b/net/ethtool/coalesce.c
index 83112c1..7b542c3e 100644
--- a/net/ethtool/coalesce.c
+++ b/net/ethtool/coalesce.c
@@ -51,6 +51,10 @@ static u32 attr_to_mask(unsigned int attr_type)
__CHECK_SUPPORTED_OFFSET(COALESCE_TX_USECS_HIGH);
__CHECK_SUPPORTED_OFFSET(COALESCE_TX_MAX_FRAMES_HIGH);
__CHECK_SUPPORTED_OFFSET(COALESCE_RATE_SAMPLE_INTERVAL);
+__CHECK_SUPPORTED_OFFSET(COALESCE_RX_EQE_PROFILE);
+__CHECK_SUPPORTED_OFFSET(COALESCE_RX_CQE_PROFILE);
+__CHECK_SUPPORTED_OFFSET(COALESCE_TX_EQE_PROFILE);
+__CHECK_SUPPORTED_OFFSET(COALESCE_TX_CQE_PROFILE);
const struct nla_policy ethnl_coalesce_get_policy[] = {
[ETHTOOL_A_COALESCE_HEADER] =
@@ -82,6 +86,13 @@ static int coalesce_prepare_data(const struct ethnl_req_info *req_base,
static int coalesce_reply_size(const struct ethnl_req_info *req_base,
const struct ethnl_reply_data *reply_base)
{
+ int modersz = nla_total_size(0) + /* _MODERATIONS_MODERATION, nest */
+ nla_total_size(sizeof(u16)) + /* _MODERATION_USEC */
+ nla_total_size(sizeof(u16)) + /* _MODERATION_PKTS */
+ nla_total_size(sizeof(u16)); /* _MODERATION_COMPS */
+ int total_modersz = nla_total_size(0) + /* _{R,T}X_{E,C}QE_PROFILE, nest */
+ modersz * NET_DIM_PARAMS_NUM_PROFILES;
+
return nla_total_size(sizeof(u32)) + /* _RX_USECS */
nla_total_size(sizeof(u32)) + /* _RX_MAX_FRAMES */
nla_total_size(sizeof(u32)) + /* _RX_USECS_IRQ */
@@ -108,7 +119,8 @@ static int coalesce_reply_size(const struct ethnl_req_info *req_base,
nla_total_size(sizeof(u8)) + /* _USE_CQE_MODE_RX */
nla_total_size(sizeof(u32)) + /* _TX_AGGR_MAX_BYTES */
nla_total_size(sizeof(u32)) + /* _TX_AGGR_MAX_FRAMES */
- nla_total_size(sizeof(u32)); /* _TX_AGGR_TIME_USECS */
+ nla_total_size(sizeof(u32)) + /* _TX_AGGR_TIME_USECS */
+ total_modersz * 4; /* _{R,T}X_{E,C}QE_PROFILE */
}
static bool coalesce_put_u32(struct sk_buff *skb, u16 attr_type, u32 val,
@@ -127,6 +139,67 @@ static bool coalesce_put_bool(struct sk_buff *skb, u16 attr_type, u32 val,
return nla_put_u8(skb, attr_type, !!val);
}
+/**
+ * coalesce_put_profile - fill reply with a nla nest with four child nla nests.
+ * @skb: socket buffer the message is stored in
+ * @attr_type: nest attr type ETHTOOL_A_COALESCE_*X_*QE_PROFILE
+ * @profile: data passed to userspace
+ * @supported_params: modifiable parameters supported by the driver
+ *
+ * Put a dim profile nest attribute. Refer to ETHTOOL_A_MODERATIONS_MODERATION.
+ *
+ * Returns false to indicate successful placement or no placement, and
+ * returns true to pass the -EMSGSIZE error to the wrapper.
+ */
+static bool coalesce_put_profile(struct sk_buff *skb, u16 attr_type,
+ const struct dim_cq_moder *profile,
+ u32 supported_params)
+{
+ struct nlattr *profile_attr, *moder_attr;
+ bool valid = false, emsg = !!-EMSGSIZE;
+ int i;
+
+ if (!profile)
+ return false;
+
+ for (i = 0; i < NET_DIM_PARAMS_NUM_PROFILES; i++) {
+ if (profile[i].usec || profile[i].pkts || profile[i].comps) {
+ valid = true;
+ break;
+ }
+ }
+
+ if (!valid || !(supported_params & attr_to_mask(attr_type)))
+ return false;
+
+ profile_attr = nla_nest_start(skb, attr_type);
+ if (!profile_attr)
+ return emsg;
+
+ for (i = 0; i < NET_DIM_PARAMS_NUM_PROFILES; i++) {
+ moder_attr = nla_nest_start(skb, ETHTOOL_A_MODERATIONS_MODERATION);
+ if (!moder_attr)
+ goto nla_cancel_profile;
+
+ if (nla_put_u16(skb, ETHTOOL_A_MODERATION_USEC, profile[i].usec) ||
+ nla_put_u16(skb, ETHTOOL_A_MODERATION_PKTS, profile[i].pkts) ||
+ nla_put_u16(skb, ETHTOOL_A_MODERATION_COMPS, profile[i].comps))
+ goto nla_cancel_moder;
+
+ nla_nest_end(skb, moder_attr);
+ }
+
+ nla_nest_end(skb, profile_attr);
+
+ return 0;
+
+nla_cancel_moder:
+ nla_nest_cancel(skb, moder_attr);
+nla_cancel_profile:
+ nla_nest_cancel(skb, profile_attr);
+ return emsg;
+}
+
static int coalesce_fill_reply(struct sk_buff *skb,
const struct ethnl_req_info *req_base,
const struct ethnl_reply_data *reply_base)
@@ -134,6 +207,7 @@ static int coalesce_fill_reply(struct sk_buff *skb,
const struct coalesce_reply_data *data = COALESCE_REPDATA(reply_base);
const struct kernel_ethtool_coalesce *kcoal = &data->kernel_coalesce;
const struct ethtool_coalesce *coal = &data->coalesce;
+ struct net_device *dev = req_base->dev;
u32 supported = data->supported_params;
if (coalesce_put_u32(skb, ETHTOOL_A_COALESCE_RX_USECS,
@@ -189,7 +263,15 @@ static int coalesce_fill_reply(struct sk_buff *skb,
coalesce_put_u32(skb, ETHTOOL_A_COALESCE_TX_AGGR_MAX_FRAMES,
kcoal->tx_aggr_max_frames, supported) ||
coalesce_put_u32(skb, ETHTOOL_A_COALESCE_TX_AGGR_TIME_USECS,
- kcoal->tx_aggr_time_usecs, supported))
+ kcoal->tx_aggr_time_usecs, supported) ||
+ coalesce_put_profile(skb, ETHTOOL_A_COALESCE_RX_EQE_PROFILE,
+ dev->rx_eqe_profile, supported) ||
+ coalesce_put_profile(skb, ETHTOOL_A_COALESCE_RX_CQE_PROFILE,
+ dev->rx_cqe_profile, supported) ||
+ coalesce_put_profile(skb, ETHTOOL_A_COALESCE_TX_EQE_PROFILE,
+ dev->tx_eqe_profile, supported) ||
+ coalesce_put_profile(skb, ETHTOOL_A_COALESCE_TX_CQE_PROFILE,
+ dev->tx_cqe_profile, supported))
return -EMSGSIZE;
return 0;
@@ -227,6 +309,16 @@ static int coalesce_fill_reply(struct sk_buff *skb,
[ETHTOOL_A_COALESCE_TX_AGGR_MAX_BYTES] = { .type = NLA_U32 },
[ETHTOOL_A_COALESCE_TX_AGGR_MAX_FRAMES] = { .type = NLA_U32 },
[ETHTOOL_A_COALESCE_TX_AGGR_TIME_USECS] = { .type = NLA_U32 },
+ [ETHTOOL_A_COALESCE_RX_EQE_PROFILE] = { .type = NLA_NESTED },
+ [ETHTOOL_A_COALESCE_RX_CQE_PROFILE] = { .type = NLA_NESTED },
+ [ETHTOOL_A_COALESCE_TX_EQE_PROFILE] = { .type = NLA_NESTED },
+ [ETHTOOL_A_COALESCE_TX_CQE_PROFILE] = { .type = NLA_NESTED },
+};
+
+static const struct nla_policy coalesce_set_profile_policy[] = {
+ [ETHTOOL_A_MODERATION_USEC] = {.type = NLA_U16},
+ [ETHTOOL_A_MODERATION_PKTS] = {.type = NLA_U16},
+ [ETHTOOL_A_MODERATION_COMPS] = {.type = NLA_U16},
};
static int
@@ -253,6 +345,73 @@ static int coalesce_fill_reply(struct sk_buff *skb,
return 1;
}
+/**
+ * ethnl_update_profile - get a nla nest with four child nla nests from userspace.
+ * @dst: data get from the driver and modified by ethnl_update_profile.
+ * @nests: nest attr ETHTOOL_A_COALESCE_*X_*QE_PROFILE to set driver's profile.
+ * @mod: whether the data is modified
+ * @extack: Netlink extended ack
+ *
+ * Layout of nests:
+ * Nested ETHTOOL_A_COALESCE_*X_*QE_PROFILE attr
+ * Nested ETHTOOL_A_MODERATIONS_MODERATION attr
+ * ETHTOOL_A_MODERATION_USEC attr
+ * ETHTOOL_A_MODERATION_PKTS attr
+ * ETHTOOL_A_MODERATION_COMPS attr
+ * ...
+ * Nested ETHTOOL_A_MODERATIONS_MODERATION attr
+ * ETHTOOL_A_MODERATION_USEC attr
+ * ETHTOOL_A_MODERATION_PKTS attr
+ * ETHTOOL_A_MODERATION_COMPS attr
+ *
+ * Returns 0 on success or a negative error code.
+ */
+static inline int ethnl_update_profile(struct net_device *dev,
+ struct dim_cq_moder *dst,
+ const struct nlattr *nests,
+ struct netlink_ext_ack *extack)
+{
+ struct nlattr *tb_moder[ARRAY_SIZE(coalesce_set_profile_policy)];
+ struct dim_cq_moder profile[NET_DIM_PARAMS_NUM_PROFILES];
+ struct nlattr *nest;
+ int ret, rem, i = 0;
+
+ if (!nests)
+ return 0;
+
+ if (!dst)
+ return -EOPNOTSUPP;
+
+ nla_for_each_nested_type(nest, ETHTOOL_A_MODERATIONS_MODERATION, nests, rem) {
+ ret = nla_parse_nested(tb_moder,
+ ARRAY_SIZE(coalesce_set_profile_policy) - 1,
+ nest, coalesce_set_profile_policy,
+ extack);
+ if (ret)
+ return ret;
+
+ if (NL_REQ_ATTR_CHECK(extack, nest, tb_moder, ETHTOOL_A_MODERATION_USEC) ||
+ NL_REQ_ATTR_CHECK(extack, nest, tb_moder, ETHTOOL_A_MODERATION_PKTS) ||
+ NL_REQ_ATTR_CHECK(extack, nest, tb_moder, ETHTOOL_A_MODERATION_COMPS))
+ return -EINVAL;
+
+ profile[i].usec = nla_get_u16(tb_moder[ETHTOOL_A_MODERATION_USEC]);
+ profile[i].pkts = nla_get_u16(tb_moder[ETHTOOL_A_MODERATION_PKTS]);
+ profile[i].comps = nla_get_u16(tb_moder[ETHTOOL_A_MODERATION_COMPS]);
+
+ if ((dst[i].usec != profile[i].usec && !(dev->priv_flags & IFF_PROFILE_USEC)) ||
+ (dst[i].pkts != profile[i].pkts && !(dev->priv_flags & IFF_PROFILE_PKTS)) ||
+ (dst[i].comps != profile[i].comps && !(dev->priv_flags & IFF_PROFILE_COMPS)))
+ return -EOPNOTSUPP;
+
+ i++;
+ }
+
+ memcpy(dst, profile, sizeof(profile));
+
+ return 0;
+}
+
static int
__ethnl_set_coalesce(struct ethnl_req_info *req_info, struct genl_info *info,
bool *dual_change)
@@ -317,6 +476,27 @@ static int coalesce_fill_reply(struct sk_buff *skb,
ethnl_update_u32(&kernel_coalesce.tx_aggr_time_usecs,
tb[ETHTOOL_A_COALESCE_TX_AGGR_TIME_USECS], &mod);
+ ret = ethnl_update_profile(dev, dev->rx_eqe_profile,
+ tb[ETHTOOL_A_COALESCE_RX_EQE_PROFILE],
+ info->extack);
+ if (ret < 0)
+ return ret;
+ ret = ethnl_update_profile(dev, dev->rx_cqe_profile,
+ tb[ETHTOOL_A_COALESCE_RX_CQE_PROFILE],
+ info->extack);
+ if (ret < 0)
+ return ret;
+ ret = ethnl_update_profile(dev, dev->tx_eqe_profile,
+ tb[ETHTOOL_A_COALESCE_TX_EQE_PROFILE],
+ info->extack);
+ if (ret < 0)
+ return ret;
+ ret = ethnl_update_profile(dev, dev->tx_cqe_profile,
+ tb[ETHTOOL_A_COALESCE_TX_CQE_PROFILE],
+ info->extack);
+ if (ret < 0)
+ return ret;
+
/* Update operation modes */
ethnl_update_bool32(&coalesce.use_adaptive_rx_coalesce,
tb[ETHTOOL_A_COALESCE_USE_ADAPTIVE_RX], &mod_mode);
--
1.8.3.1
