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authorPaolo Abeni <pabeni@redhat.com>2024-04-30 10:51:36 +0200
committerPaolo Abeni <pabeni@redhat.com>2024-04-30 10:51:36 +0200
commit9f02bb6d7a229058ffaba4f6dd78e0f7b06b799c (patch)
tree6ae0e99db5ddae2bd371c8b36930a65a9e8b323b
parentdd1941f801bc958d2ee13f5be8b38db6b034b806 (diff)
parentd888f04c09bb2c2fc60f84ccba87a9ff727b13d4 (diff)
downloadnet-queue-9f02bb6d7a229058ffaba4f6dd78e0f7b06b799c.tar.gz
Merge branch 'virtio-net-support-device-stats'
Xuan Zhuo says: ==================== virtio-net: support device stats https://github.com/oasis-tcs/virtio-spec/commit/42f389989823039724f95bbbd243291ab0064f82 The virtio net supports to get device stats. ==================== Link: https://lore.kernel.org/r/20240426033928.77778-1-xuanzhuo@linux.alibaba.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
-rw-r--r--Documentation/netlink/specs/netdev.yaml104
-rw-r--r--drivers/net/virtio_net.c1010
-rw-r--r--include/net/netdev_queues.h27
-rw-r--r--include/uapi/linux/netdev.h19
-rw-r--r--include/uapi/linux/virtio_net.h143
-rw-r--r--net/core/netdev-genl.c23
-rw-r--r--tools/include/uapi/linux/netdev.h19
7 files changed, 1284 insertions, 61 deletions
diff --git a/Documentation/netlink/specs/netdev.yaml b/Documentation/netlink/specs/netdev.yaml
index 679c4130707cd..2be4b3714d175 100644
--- a/Documentation/netlink/specs/netdev.yaml
+++ b/Documentation/netlink/specs/netdev.yaml
@@ -335,6 +335,110 @@ attribute-sets:
Allocation failure may, or may not result in a packet drop, depending
on driver implementation and whether system recovers quickly.
type: uint
+ -
+ name: rx-hw-drops
+ doc: |
+ Number of all packets which entered the device, but never left it,
+ including but not limited to: packets dropped due to lack of buffer
+ space, processing errors, explicit or implicit policies and packet
+ filters.
+ type: uint
+ -
+ name: rx-hw-drop-overruns
+ doc: |
+ Number of packets dropped due to transient lack of resources, such as
+ buffer space, host descriptors etc.
+ type: uint
+ -
+ name: rx-csum-unnecessary
+ doc: Number of packets that were marked as CHECKSUM_UNNECESSARY.
+ type: uint
+ -
+ name: rx-csum-none
+ doc: Number of packets that were not checksummed by device.
+ type: uint
+ -
+ name: rx-csum-bad
+ doc: |
+ Number of packets with bad checksum. The packets are not discarded,
+ but still delivered to the stack.
+ type: uint
+ -
+ name: rx-hw-gro-packets
+ doc: |
+ Number of packets that were coalesced from smaller packets by the device.
+ Counts only packets coalesced with the HW-GRO netdevice feature,
+ LRO-coalesced packets are not counted.
+ type: uint
+ -
+ name: rx-hw-gro-bytes
+ doc: See `rx-hw-gro-packets`.
+ type: uint
+ -
+ name: rx-hw-gro-wire-packets
+ doc: |
+ Number of packets that were coalesced to bigger packetss with the HW-GRO
+ netdevice feature. LRO-coalesced packets are not counted.
+ type: uint
+ -
+ name: rx-hw-gro-wire-bytes
+ doc: See `rx-hw-gro-wire-packets`.
+ type: uint
+ -
+ name: rx-hw-drop-ratelimits
+ doc: |
+ Number of the packets dropped by the device due to the received
+ packets bitrate exceeding the device rate limit.
+ type: uint
+ -
+ name: tx-hw-drops
+ doc: |
+ Number of packets that arrived at the device but never left it,
+ encompassing packets dropped for reasons such as processing errors, as
+ well as those affected by explicitly defined policies and packet
+ filtering criteria.
+ type: uint
+ -
+ name: tx-hw-drop-errors
+ doc: Number of packets dropped because they were invalid or malformed.
+ type: uint
+ -
+ name: tx-csum-none
+ doc: |
+ Number of packets that did not require the device to calculate the
+ checksum.
+ type: uint
+ -
+ name: tx-needs-csum
+ doc: |
+ Number of packets that required the device to calculate the checksum.
+ type: uint
+ -
+ name: tx-hw-gso-packets
+ doc: |
+ Number of packets that necessitated segmentation into smaller packets
+ by the device.
+ type: uint
+ -
+ name: tx-hw-gso-bytes
+ doc: See `tx-hw-gso-packets`.
+ type: uint
+ -
+ name: tx-hw-gso-wire-packets
+ doc: |
+ Number of wire-sized packets generated by processing
+ `tx-hw-gso-packets`
+ type: uint
+ -
+ name: tx-hw-gso-wire-bytes
+ doc: See `tx-hw-gso-wire-packets`.
+ type: uint
+ -
+ name: tx-hw-drop-ratelimits
+ doc: |
+ Number of the packets dropped by the device due to the transmit
+ packets bitrate exceeding the device rate limit.
+ type: uint
operations:
list:
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index 7176b956460bf..1fa84790041b9 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -24,6 +24,7 @@
#include <net/xdp.h>
#include <net/net_failover.h>
#include <net/netdev_rx_queue.h>
+#include <net/netdev_queues.h>
static int napi_weight = NAPI_POLL_WEIGHT;
module_param(napi_weight, int, 0444);
@@ -78,6 +79,7 @@ static const unsigned long guest_offloads[] = {
struct virtnet_stat_desc {
char desc[ETH_GSTRING_LEN];
size_t offset;
+ size_t qstat_offset;
};
struct virtnet_sq_free_stats {
@@ -107,31 +109,157 @@ struct virtnet_rq_stats {
u64_stats_t kicks;
};
-#define VIRTNET_SQ_STAT(m) offsetof(struct virtnet_sq_stats, m)
-#define VIRTNET_RQ_STAT(m) offsetof(struct virtnet_rq_stats, m)
+#define VIRTNET_SQ_STAT(name, m) {name, offsetof(struct virtnet_sq_stats, m), -1}
+#define VIRTNET_RQ_STAT(name, m) {name, offsetof(struct virtnet_rq_stats, m), -1}
+
+#define VIRTNET_SQ_STAT_QSTAT(name, m) \
+ { \
+ name, \
+ offsetof(struct virtnet_sq_stats, m), \
+ offsetof(struct netdev_queue_stats_tx, m), \
+ }
+
+#define VIRTNET_RQ_STAT_QSTAT(name, m) \
+ { \
+ name, \
+ offsetof(struct virtnet_rq_stats, m), \
+ offsetof(struct netdev_queue_stats_rx, m), \
+ }
static const struct virtnet_stat_desc virtnet_sq_stats_desc[] = {
- { "packets", VIRTNET_SQ_STAT(packets) },
- { "bytes", VIRTNET_SQ_STAT(bytes) },
- { "xdp_tx", VIRTNET_SQ_STAT(xdp_tx) },
- { "xdp_tx_drops", VIRTNET_SQ_STAT(xdp_tx_drops) },
- { "kicks", VIRTNET_SQ_STAT(kicks) },
- { "tx_timeouts", VIRTNET_SQ_STAT(tx_timeouts) },
+ VIRTNET_SQ_STAT("xdp_tx", xdp_tx),
+ VIRTNET_SQ_STAT("xdp_tx_drops", xdp_tx_drops),
+ VIRTNET_SQ_STAT("kicks", kicks),
+ VIRTNET_SQ_STAT("tx_timeouts", tx_timeouts),
};
static const struct virtnet_stat_desc virtnet_rq_stats_desc[] = {
- { "packets", VIRTNET_RQ_STAT(packets) },
- { "bytes", VIRTNET_RQ_STAT(bytes) },
- { "drops", VIRTNET_RQ_STAT(drops) },
- { "xdp_packets", VIRTNET_RQ_STAT(xdp_packets) },
- { "xdp_tx", VIRTNET_RQ_STAT(xdp_tx) },
- { "xdp_redirects", VIRTNET_RQ_STAT(xdp_redirects) },
- { "xdp_drops", VIRTNET_RQ_STAT(xdp_drops) },
- { "kicks", VIRTNET_RQ_STAT(kicks) },
+ VIRTNET_RQ_STAT("drops", drops),
+ VIRTNET_RQ_STAT("xdp_packets", xdp_packets),
+ VIRTNET_RQ_STAT("xdp_tx", xdp_tx),
+ VIRTNET_RQ_STAT("xdp_redirects", xdp_redirects),
+ VIRTNET_RQ_STAT("xdp_drops", xdp_drops),
+ VIRTNET_RQ_STAT("kicks", kicks),
+};
+
+static const struct virtnet_stat_desc virtnet_sq_stats_desc_qstat[] = {
+ VIRTNET_SQ_STAT_QSTAT("packets", packets),
+ VIRTNET_SQ_STAT_QSTAT("bytes", bytes),
+};
+
+static const struct virtnet_stat_desc virtnet_rq_stats_desc_qstat[] = {
+ VIRTNET_RQ_STAT_QSTAT("packets", packets),
+ VIRTNET_RQ_STAT_QSTAT("bytes", bytes),
+};
+
+#define VIRTNET_STATS_DESC_CQ(name) \
+ {#name, offsetof(struct virtio_net_stats_cvq, name), -1}
+
+#define VIRTNET_STATS_DESC_RX(class, name) \
+ {#name, offsetof(struct virtio_net_stats_rx_ ## class, rx_ ## name), -1}
+
+#define VIRTNET_STATS_DESC_TX(class, name) \
+ {#name, offsetof(struct virtio_net_stats_tx_ ## class, tx_ ## name), -1}
+
+
+static const struct virtnet_stat_desc virtnet_stats_cvq_desc[] = {
+ VIRTNET_STATS_DESC_CQ(command_num),
+ VIRTNET_STATS_DESC_CQ(ok_num),
+};
+
+static const struct virtnet_stat_desc virtnet_stats_rx_basic_desc[] = {
+ VIRTNET_STATS_DESC_RX(basic, packets),
+ VIRTNET_STATS_DESC_RX(basic, bytes),
+
+ VIRTNET_STATS_DESC_RX(basic, notifications),
+ VIRTNET_STATS_DESC_RX(basic, interrupts),
+};
+
+static const struct virtnet_stat_desc virtnet_stats_tx_basic_desc[] = {
+ VIRTNET_STATS_DESC_TX(basic, packets),
+ VIRTNET_STATS_DESC_TX(basic, bytes),
+
+ VIRTNET_STATS_DESC_TX(basic, notifications),
+ VIRTNET_STATS_DESC_TX(basic, interrupts),
+};
+
+static const struct virtnet_stat_desc virtnet_stats_rx_csum_desc[] = {
+ VIRTNET_STATS_DESC_RX(csum, needs_csum),
+};
+
+static const struct virtnet_stat_desc virtnet_stats_tx_gso_desc[] = {
+ VIRTNET_STATS_DESC_TX(gso, gso_packets_noseg),
+ VIRTNET_STATS_DESC_TX(gso, gso_bytes_noseg),
+};
+
+static const struct virtnet_stat_desc virtnet_stats_rx_speed_desc[] = {
+ VIRTNET_STATS_DESC_RX(speed, ratelimit_bytes),
+};
+
+static const struct virtnet_stat_desc virtnet_stats_tx_speed_desc[] = {
+ VIRTNET_STATS_DESC_TX(speed, ratelimit_bytes),
+};
+
+#define VIRTNET_STATS_DESC_RX_QSTAT(class, name, qstat_field) \
+ { \
+ #name, \
+ offsetof(struct virtio_net_stats_rx_ ## class, rx_ ## name), \
+ offsetof(struct netdev_queue_stats_rx, qstat_field), \
+ }
+
+#define VIRTNET_STATS_DESC_TX_QSTAT(class, name, qstat_field) \
+ { \
+ #name, \
+ offsetof(struct virtio_net_stats_tx_ ## class, tx_ ## name), \
+ offsetof(struct netdev_queue_stats_tx, qstat_field), \
+ }
+
+static const struct virtnet_stat_desc virtnet_stats_rx_basic_desc_qstat[] = {
+ VIRTNET_STATS_DESC_RX_QSTAT(basic, drops, hw_drops),
+ VIRTNET_STATS_DESC_RX_QSTAT(basic, drop_overruns, hw_drop_overruns),
+};
+
+static const struct virtnet_stat_desc virtnet_stats_tx_basic_desc_qstat[] = {
+ VIRTNET_STATS_DESC_TX_QSTAT(basic, drops, hw_drops),
+ VIRTNET_STATS_DESC_TX_QSTAT(basic, drop_malformed, hw_drop_errors),
+};
+
+static const struct virtnet_stat_desc virtnet_stats_rx_csum_desc_qstat[] = {
+ VIRTNET_STATS_DESC_RX_QSTAT(csum, csum_valid, csum_unnecessary),
+ VIRTNET_STATS_DESC_RX_QSTAT(csum, csum_none, csum_none),
+ VIRTNET_STATS_DESC_RX_QSTAT(csum, csum_bad, csum_bad),
+};
+
+static const struct virtnet_stat_desc virtnet_stats_tx_csum_desc_qstat[] = {
+ VIRTNET_STATS_DESC_TX_QSTAT(csum, csum_none, csum_none),
+ VIRTNET_STATS_DESC_TX_QSTAT(csum, needs_csum, needs_csum),
+};
+
+static const struct virtnet_stat_desc virtnet_stats_rx_gso_desc_qstat[] = {
+ VIRTNET_STATS_DESC_RX_QSTAT(gso, gso_packets, hw_gro_packets),
+ VIRTNET_STATS_DESC_RX_QSTAT(gso, gso_bytes, hw_gro_bytes),
+ VIRTNET_STATS_DESC_RX_QSTAT(gso, gso_packets_coalesced, hw_gro_wire_packets),
+ VIRTNET_STATS_DESC_RX_QSTAT(gso, gso_bytes_coalesced, hw_gro_wire_bytes),
+};
+
+static const struct virtnet_stat_desc virtnet_stats_tx_gso_desc_qstat[] = {
+ VIRTNET_STATS_DESC_TX_QSTAT(gso, gso_packets, hw_gso_packets),
+ VIRTNET_STATS_DESC_TX_QSTAT(gso, gso_bytes, hw_gso_bytes),
+ VIRTNET_STATS_DESC_TX_QSTAT(gso, gso_segments, hw_gso_wire_packets),
+ VIRTNET_STATS_DESC_TX_QSTAT(gso, gso_segments_bytes, hw_gso_wire_bytes),
};
-#define VIRTNET_SQ_STATS_LEN ARRAY_SIZE(virtnet_sq_stats_desc)
-#define VIRTNET_RQ_STATS_LEN ARRAY_SIZE(virtnet_rq_stats_desc)
+static const struct virtnet_stat_desc virtnet_stats_rx_speed_desc_qstat[] = {
+ VIRTNET_STATS_DESC_RX_QSTAT(speed, ratelimit_packets, hw_drop_ratelimits),
+};
+
+static const struct virtnet_stat_desc virtnet_stats_tx_speed_desc_qstat[] = {
+ VIRTNET_STATS_DESC_TX_QSTAT(speed, ratelimit_packets, hw_drop_ratelimits),
+};
+
+#define VIRTNET_Q_TYPE_RX 0
+#define VIRTNET_Q_TYPE_TX 1
+#define VIRTNET_Q_TYPE_CQ 2
struct virtnet_interrupt_coalesce {
u32 max_packets;
@@ -249,6 +377,7 @@ struct control_buf {
struct virtio_net_ctrl_coal_tx coal_tx;
struct virtio_net_ctrl_coal_rx coal_rx;
struct virtio_net_ctrl_coal_vq coal_vq;
+ struct virtio_net_stats_capabilities stats_cap;
};
struct virtnet_info {
@@ -340,6 +469,8 @@ struct virtnet_info {
/* failover when STANDBY feature enabled */
struct failover *failover;
+
+ u64 device_stats_cap;
};
struct padded_vnet_hdr {
@@ -425,6 +556,17 @@ static int rxq2vq(int rxq)
return rxq * 2;
}
+static int vq_type(struct virtnet_info *vi, int qid)
+{
+ if (qid == vi->max_queue_pairs * 2)
+ return VIRTNET_Q_TYPE_CQ;
+
+ if (qid % 2)
+ return VIRTNET_Q_TYPE_TX;
+
+ return VIRTNET_Q_TYPE_RX;
+}
+
static inline struct virtio_net_common_hdr *
skb_vnet_common_hdr(struct sk_buff *skb)
{
@@ -2145,7 +2287,7 @@ static int virtnet_receive(struct receive_queue *rq, int budget,
u64_stats_set(&stats.packets, packets);
u64_stats_update_begin(&rq->stats.syncp);
- for (i = 0; i < VIRTNET_RQ_STATS_LEN; i++) {
+ for (i = 0; i < ARRAY_SIZE(virtnet_rq_stats_desc); i++) {
size_t offset = virtnet_rq_stats_desc[i].offset;
u64_stats_t *item, *src;
@@ -2153,6 +2295,10 @@ static int virtnet_receive(struct receive_queue *rq, int budget,
src = (u64_stats_t *)((u8 *)&stats + offset);
u64_stats_add(item, u64_stats_read(src));
}
+
+ u64_stats_add(&rq->stats.packets, u64_stats_read(&stats.packets));
+ u64_stats_add(&rq->stats.bytes, u64_stats_read(&stats.bytes));
+
u64_stats_update_end(&rq->stats.syncp);
return packets;
@@ -2527,11 +2673,12 @@ static int virtnet_tx_resize(struct virtnet_info *vi,
* supported by the hypervisor, as indicated by feature bits, should
* never fail unless improperly formatted.
*/
-static bool virtnet_send_command(struct virtnet_info *vi, u8 class, u8 cmd,
- struct scatterlist *out)
+static bool virtnet_send_command_reply(struct virtnet_info *vi, u8 class, u8 cmd,
+ struct scatterlist *out,
+ struct scatterlist *in)
{
- struct scatterlist *sgs[4], hdr, stat;
- unsigned out_num = 0, tmp;
+ struct scatterlist *sgs[5], hdr, stat;
+ u32 out_num = 0, tmp, in_num = 0;
int ret;
/* Caller should know better */
@@ -2549,10 +2696,13 @@ static bool virtnet_send_command(struct virtnet_info *vi, u8 class, u8 cmd,
/* Add return status. */
sg_init_one(&stat, &vi->ctrl->status, sizeof(vi->ctrl->status));
- sgs[out_num] = &stat;
+ sgs[out_num + in_num++] = &stat;
- BUG_ON(out_num + 1 > ARRAY_SIZE(sgs));
- ret = virtqueue_add_sgs(vi->cvq, sgs, out_num, 1, vi, GFP_ATOMIC);
+ if (in)
+ sgs[out_num + in_num++] = in;
+
+ BUG_ON(out_num + in_num > ARRAY_SIZE(sgs));
+ ret = virtqueue_add_sgs(vi->cvq, sgs, out_num, in_num, vi, GFP_ATOMIC);
if (ret < 0) {
dev_warn(&vi->vdev->dev,
"Failed to add sgs for command vq: %d\n.", ret);
@@ -2574,6 +2724,12 @@ static bool virtnet_send_command(struct virtnet_info *vi, u8 class, u8 cmd,
return vi->ctrl->status == VIRTIO_NET_OK;
}
+static bool virtnet_send_command(struct virtnet_info *vi, u8 class, u8 cmd,
+ struct scatterlist *out)
+{
+ return virtnet_send_command_reply(vi, class, cmd, out, NULL);
+}
+
static int virtnet_set_mac_address(struct net_device *dev, void *p)
{
struct virtnet_info *vi = netdev_priv(dev);
@@ -3297,25 +3453,654 @@ static int virtnet_set_channels(struct net_device *dev,
return err;
}
+static void virtnet_stats_sprintf(u8 **p, const char *fmt, const char *noq_fmt,
+ int num, int qid, const struct virtnet_stat_desc *desc)
+{
+ int i;
+
+ if (qid < 0) {
+ for (i = 0; i < num; ++i)
+ ethtool_sprintf(p, noq_fmt, desc[i].desc);
+ } else {
+ for (i = 0; i < num; ++i)
+ ethtool_sprintf(p, fmt, qid, desc[i].desc);
+ }
+}
+
+/* qid == -1: for rx/tx queue total field */
+static void virtnet_get_stats_string(struct virtnet_info *vi, int type, int qid, u8 **data)
+{
+ const struct virtnet_stat_desc *desc;
+ const char *fmt, *noq_fmt;
+ u8 *p = *data;
+ u32 num;
+
+ if (type == VIRTNET_Q_TYPE_CQ && qid >= 0) {
+ noq_fmt = "cq_hw_%s";
+
+ if (vi->device_stats_cap & VIRTIO_NET_STATS_TYPE_CVQ) {
+ desc = &virtnet_stats_cvq_desc[0];
+ num = ARRAY_SIZE(virtnet_stats_cvq_desc);
+
+ virtnet_stats_sprintf(&p, NULL, noq_fmt, num, -1, desc);
+ }
+ }
+
+ if (type == VIRTNET_Q_TYPE_RX) {
+ fmt = "rx%u_%s";
+ noq_fmt = "rx_%s";
+
+ desc = &virtnet_rq_stats_desc[0];
+ num = ARRAY_SIZE(virtnet_rq_stats_desc);
+
+ virtnet_stats_sprintf(&p, fmt, noq_fmt, num, qid, desc);
+
+ fmt = "rx%u_hw_%s";
+ noq_fmt = "rx_hw_%s";
+
+ if (vi->device_stats_cap & VIRTIO_NET_STATS_TYPE_RX_BASIC) {
+ desc = &virtnet_stats_rx_basic_desc[0];
+ num = ARRAY_SIZE(virtnet_stats_rx_basic_desc);
+
+ virtnet_stats_sprintf(&p, fmt, noq_fmt, num, qid, desc);
+ }
+
+ if (vi->device_stats_cap & VIRTIO_NET_STATS_TYPE_RX_CSUM) {
+ desc = &virtnet_stats_rx_csum_desc[0];
+ num = ARRAY_SIZE(virtnet_stats_rx_csum_desc);
+
+ virtnet_stats_sprintf(&p, fmt, noq_fmt, num, qid, desc);
+ }
+
+ if (vi->device_stats_cap & VIRTIO_NET_STATS_TYPE_RX_SPEED) {
+ desc = &virtnet_stats_rx_speed_desc[0];
+ num = ARRAY_SIZE(virtnet_stats_rx_speed_desc);
+
+ virtnet_stats_sprintf(&p, fmt, noq_fmt, num, qid, desc);
+ }
+ }
+
+ if (type == VIRTNET_Q_TYPE_TX) {
+ fmt = "tx%u_%s";
+ noq_fmt = "tx_%s";
+
+ desc = &virtnet_sq_stats_desc[0];
+ num = ARRAY_SIZE(virtnet_sq_stats_desc);
+
+ virtnet_stats_sprintf(&p, fmt, noq_fmt, num, qid, desc);
+
+ fmt = "tx%u_hw_%s";
+ noq_fmt = "tx_hw_%s";
+
+ if (vi->device_stats_cap & VIRTIO_NET_STATS_TYPE_TX_BASIC) {
+ desc = &virtnet_stats_tx_basic_desc[0];
+ num = ARRAY_SIZE(virtnet_stats_tx_basic_desc);
+
+ virtnet_stats_sprintf(&p, fmt, noq_fmt, num, qid, desc);
+ }
+
+ if (vi->device_stats_cap & VIRTIO_NET_STATS_TYPE_TX_GSO) {
+ desc = &virtnet_stats_tx_gso_desc[0];
+ num = ARRAY_SIZE(virtnet_stats_tx_gso_desc);
+
+ virtnet_stats_sprintf(&p, fmt, noq_fmt, num, qid, desc);
+ }
+
+ if (vi->device_stats_cap & VIRTIO_NET_STATS_TYPE_TX_SPEED) {
+ desc = &virtnet_stats_tx_speed_desc[0];
+ num = ARRAY_SIZE(virtnet_stats_tx_speed_desc);
+
+ virtnet_stats_sprintf(&p, fmt, noq_fmt, num, qid, desc);
+ }
+ }
+
+ *data = p;
+}
+
+struct virtnet_stats_ctx {
+ /* The stats are write to qstats or ethtool -S */
+ bool to_qstat;
+
+ /* Used to calculate the offset inside the output buffer. */
+ u32 desc_num[3];
+
+ /* The actual supported stat types. */
+ u32 bitmap[3];
+
+ /* Used to calculate the reply buffer size. */
+ u32 size[3];
+
+ /* Record the output buffer. */
+ u64 *data;
+};
+
+static void virtnet_stats_ctx_init(struct virtnet_info *vi,
+ struct virtnet_stats_ctx *ctx,
+ u64 *data, bool to_qstat)
+{
+ u32 queue_type;
+
+ ctx->data = data;
+ ctx->to_qstat = to_qstat;
+
+ if (to_qstat) {
+ ctx->desc_num[VIRTNET_Q_TYPE_RX] = ARRAY_SIZE(virtnet_rq_stats_desc_qstat);
+ ctx->desc_num[VIRTNET_Q_TYPE_TX] = ARRAY_SIZE(virtnet_sq_stats_desc_qstat);
+
+ queue_type = VIRTNET_Q_TYPE_RX;
+
+ if (vi->device_stats_cap & VIRTIO_NET_STATS_TYPE_RX_BASIC) {
+ ctx->bitmap[queue_type] |= VIRTIO_NET_STATS_TYPE_RX_BASIC;
+ ctx->desc_num[queue_type] += ARRAY_SIZE(virtnet_stats_rx_basic_desc_qstat);
+ ctx->size[queue_type] += sizeof(struct virtio_net_stats_rx_basic);
+ }
+
+ if (vi->device_stats_cap & VIRTIO_NET_STATS_TYPE_RX_CSUM) {
+ ctx->bitmap[queue_type] |= VIRTIO_NET_STATS_TYPE_RX_CSUM;
+ ctx->desc_num[queue_type] += ARRAY_SIZE(virtnet_stats_rx_csum_desc_qstat);
+ ctx->size[queue_type] += sizeof(struct virtio_net_stats_rx_csum);
+ }
+
+ if (vi->device_stats_cap & VIRTIO_NET_STATS_TYPE_RX_GSO) {
+ ctx->bitmap[queue_type] |= VIRTIO_NET_STATS_TYPE_RX_GSO;
+ ctx->desc_num[queue_type] += ARRAY_SIZE(virtnet_stats_rx_gso_desc_qstat);
+ ctx->size[queue_type] += sizeof(struct virtio_net_stats_rx_gso);
+ }
+
+ if (vi->device_stats_cap & VIRTIO_NET_STATS_TYPE_RX_SPEED) {
+ ctx->bitmap[queue_type] |= VIRTIO_NET_STATS_TYPE_RX_SPEED;
+ ctx->desc_num[queue_type] += ARRAY_SIZE(virtnet_stats_rx_speed_desc_qstat);
+ ctx->size[queue_type] += sizeof(struct virtio_net_stats_rx_speed);
+ }
+
+ queue_type = VIRTNET_Q_TYPE_TX;
+
+ if (vi->device_stats_cap & VIRTIO_NET_STATS_TYPE_TX_BASIC) {
+ ctx->bitmap[queue_type] |= VIRTIO_NET_STATS_TYPE_TX_BASIC;
+ ctx->desc_num[queue_type] += ARRAY_SIZE(virtnet_stats_tx_basic_desc_qstat);
+ ctx->size[queue_type] += sizeof(struct virtio_net_stats_tx_basic);
+ }
+
+ if (vi->device_stats_cap & VIRTIO_NET_STATS_TYPE_TX_CSUM) {
+ ctx->bitmap[queue_type] |= VIRTIO_NET_STATS_TYPE_TX_CSUM;
+ ctx->desc_num[queue_type] += ARRAY_SIZE(virtnet_stats_tx_csum_desc_qstat);
+ ctx->size[queue_type] += sizeof(struct virtio_net_stats_tx_csum);
+ }
+
+ if (vi->device_stats_cap & VIRTIO_NET_STATS_TYPE_TX_GSO) {
+ ctx->bitmap[queue_type] |= VIRTIO_NET_STATS_TYPE_TX_GSO;
+ ctx->desc_num[queue_type] += ARRAY_SIZE(virtnet_stats_tx_gso_desc_qstat);
+ ctx->size[queue_type] += sizeof(struct virtio_net_stats_tx_gso);
+ }
+
+ if (vi->device_stats_cap & VIRTIO_NET_STATS_TYPE_TX_SPEED) {
+ ctx->bitmap[queue_type] |= VIRTIO_NET_STATS_TYPE_TX_SPEED;
+ ctx->desc_num[queue_type] += ARRAY_SIZE(virtnet_stats_tx_speed_desc_qstat);
+ ctx->size[queue_type] += sizeof(struct virtio_net_stats_tx_speed);
+ }
+
+ return;
+ }
+
+ ctx->desc_num[VIRTNET_Q_TYPE_RX] = ARRAY_SIZE(virtnet_rq_stats_desc);
+ ctx->desc_num[VIRTNET_Q_TYPE_TX] = ARRAY_SIZE(virtnet_sq_stats_desc);
+
+ if (vi->device_stats_cap & VIRTIO_NET_STATS_TYPE_CVQ) {
+ queue_type = VIRTNET_Q_TYPE_CQ;
+
+ ctx->bitmap[queue_type] |= VIRTIO_NET_STATS_TYPE_CVQ;
+ ctx->desc_num[queue_type] += ARRAY_SIZE(virtnet_stats_cvq_desc);
+ ctx->size[queue_type] += sizeof(struct virtio_net_stats_cvq);
+ }
+
+ queue_type = VIRTNET_Q_TYPE_RX;
+
+ if (vi->device_stats_cap & VIRTIO_NET_STATS_TYPE_RX_BASIC) {
+ ctx->bitmap[queue_type] |= VIRTIO_NET_STATS_TYPE_RX_BASIC;
+ ctx->desc_num[queue_type] += ARRAY_SIZE(virtnet_stats_rx_basic_desc);
+ ctx->size[queue_type] += sizeof(struct virtio_net_stats_rx_basic);
+ }
+
+ if (vi->device_stats_cap & VIRTIO_NET_STATS_TYPE_RX_CSUM) {
+ ctx->bitmap[queue_type] |= VIRTIO_NET_STATS_TYPE_RX_CSUM;
+ ctx->desc_num[queue_type] += ARRAY_SIZE(virtnet_stats_rx_csum_desc);
+ ctx->size[queue_type] += sizeof(struct virtio_net_stats_rx_csum);
+ }
+
+ if (vi->device_stats_cap & VIRTIO_NET_STATS_TYPE_RX_SPEED) {
+ ctx->bitmap[queue_type] |= VIRTIO_NET_STATS_TYPE_RX_SPEED;
+ ctx->desc_num[queue_type] += ARRAY_SIZE(virtnet_stats_rx_speed_desc);
+ ctx->size[queue_type] += sizeof(struct virtio_net_stats_rx_speed);
+ }
+
+ queue_type = VIRTNET_Q_TYPE_TX;
+
+ if (vi->device_stats_cap & VIRTIO_NET_STATS_TYPE_TX_BASIC) {
+ ctx->bitmap[queue_type] |= VIRTIO_NET_STATS_TYPE_TX_BASIC;
+ ctx->desc_num[queue_type] += ARRAY_SIZE(virtnet_stats_tx_basic_desc);
+ ctx->size[queue_type] += sizeof(struct virtio_net_stats_tx_basic);
+ }
+
+ if (vi->device_stats_cap & VIRTIO_NET_STATS_TYPE_TX_GSO) {
+ ctx->bitmap[queue_type] |= VIRTIO_NET_STATS_TYPE_TX_GSO;
+ ctx->desc_num[queue_type] += ARRAY_SIZE(virtnet_stats_tx_gso_desc);
+ ctx->size[queue_type] += sizeof(struct virtio_net_stats_tx_gso);
+ }
+
+ if (vi->device_stats_cap & VIRTIO_NET_STATS_TYPE_TX_SPEED) {
+ ctx->bitmap[queue_type] |= VIRTIO_NET_STATS_TYPE_TX_SPEED;
+ ctx->desc_num[queue_type] += ARRAY_SIZE(virtnet_stats_tx_speed_desc);
+ ctx->size[queue_type] += sizeof(struct virtio_net_stats_tx_speed);
+ }
+}
+
+/* stats_sum_queue - Calculate the sum of the same fields in sq or rq.
+ * @sum: the position to store the sum values
+ * @num: field num
+ * @q_value: the first queue fields
+ * @q_num: number of the queues
+ */
+static void stats_sum_queue(u64 *sum, u32 num, u64 *q_value, u32 q_num)
+{
+ u32 step = num;
+ int i, j;
+ u64 *p;
+
+ for (i = 0; i < num; ++i) {
+ p = sum + i;
+ *p = 0;
+
+ for (j = 0; j < q_num; ++j)
+ *p += *(q_value + i + j * step);
+ }
+}
+
+static void virtnet_fill_total_fields(struct virtnet_info *vi,
+ struct virtnet_stats_ctx *ctx)
+{
+ u64 *data, *first_rx_q, *first_tx_q;
+ u32 num_cq, num_rx, num_tx;
+
+ num_cq = ctx->desc_num[VIRTNET_Q_TYPE_CQ];
+ num_rx = ctx->desc_num[VIRTNET_Q_TYPE_RX];
+ num_tx = ctx->desc_num[VIRTNET_Q_TYPE_TX];
+
+ first_rx_q = ctx->data + num_rx + num_tx + num_cq;
+ first_tx_q = first_rx_q + vi->curr_queue_pairs * num_rx;
+
+ data = ctx->data;
+
+ stats_sum_queue(data, num_rx, first_rx_q, vi->curr_queue_pairs);
+
+ data = ctx->data + num_rx;
+
+ stats_sum_queue(data, num_tx, first_tx_q, vi->curr_queue_pairs);
+}
+
+static void virtnet_fill_stats_qstat(struct virtnet_info *vi, u32 qid,
+ struct virtnet_stats_ctx *ctx,
+ const u8 *base, bool drv_stats, u8 reply_type)
+{
+ const struct virtnet_stat_desc *desc;
+ const u64_stats_t *v_stat;
+ u64 offset, bitmap;
+ const __le64 *v;
+ u32 queue_type;
+ int i, num;
+
+ queue_type = vq_type(vi, qid);
+ bitmap = ctx->bitmap[queue_type];
+
+ if (drv_stats) {
+ if (queue_type == VIRTNET_Q_TYPE_RX) {
+ desc = &virtnet_rq_stats_desc_qstat[0];
+ num = ARRAY_SIZE(virtnet_rq_stats_desc_qstat);
+ } else {
+ desc = &virtnet_sq_stats_desc_qstat[0];
+ num = ARRAY_SIZE(virtnet_sq_stats_desc_qstat);
+ }
+
+ for (i = 0; i < num; ++i) {
+ offset = desc[i].qstat_offset / sizeof(*ctx->data);
+ v_stat = (const u64_stats_t *)(base + desc[i].offset);
+ ctx->data[offset] = u64_stats_read(v_stat);
+ }
+ return;
+ }
+
+ if (bitmap & VIRTIO_NET_STATS_TYPE_RX_BASIC) {
+ desc = &virtnet_stats_rx_basic_desc_qstat[0];
+ num = ARRAY_SIZE(virtnet_stats_rx_basic_desc_qstat);
+ if (reply_type == VIRTIO_NET_STATS_TYPE_REPLY_RX_BASIC)
+ goto found;
+ }
+
+ if (bitmap & VIRTIO_NET_STATS_TYPE_RX_CSUM) {
+ desc = &virtnet_stats_rx_csum_desc_qstat[0];
+ num = ARRAY_SIZE(virtnet_stats_rx_csum_desc_qstat);
+ if (reply_type == VIRTIO_NET_STATS_TYPE_REPLY_RX_CSUM)
+ goto found;
+ }
+
+ if (bitmap & VIRTIO_NET_STATS_TYPE_RX_GSO) {
+ desc = &virtnet_stats_rx_gso_desc_qstat[0];
+ num = ARRAY_SIZE(virtnet_stats_rx_gso_desc_qstat);
+ if (reply_type == VIRTIO_NET_STATS_TYPE_REPLY_RX_GSO)
+ goto found;
+ }
+
+ if (bitmap & VIRTIO_NET_STATS_TYPE_RX_SPEED) {
+ desc = &virtnet_stats_rx_speed_desc_qstat[0];
+ num = ARRAY_SIZE(virtnet_stats_rx_speed_desc_qstat);
+ if (reply_type == VIRTIO_NET_STATS_TYPE_REPLY_RX_SPEED)
+ goto found;
+ }
+
+ if (bitmap & VIRTIO_NET_STATS_TYPE_TX_BASIC) {
+ desc = &virtnet_stats_tx_basic_desc_qstat[0];
+ num = ARRAY_SIZE(virtnet_stats_tx_basic_desc_qstat);
+ if (reply_type == VIRTIO_NET_STATS_TYPE_REPLY_TX_BASIC)
+ goto found;
+ }
+
+ if (bitmap & VIRTIO_NET_STATS_TYPE_TX_CSUM) {
+ desc = &virtnet_stats_tx_csum_desc_qstat[0];
+ num = ARRAY_SIZE(virtnet_stats_tx_csum_desc_qstat);
+ if (reply_type == VIRTIO_NET_STATS_TYPE_REPLY_TX_CSUM)
+ goto found;
+ }
+
+ if (bitmap & VIRTIO_NET_STATS_TYPE_TX_GSO) {
+ desc = &virtnet_stats_tx_gso_desc_qstat[0];
+ num = ARRAY_SIZE(virtnet_stats_tx_gso_desc_qstat);
+ if (reply_type == VIRTIO_NET_STATS_TYPE_REPLY_TX_GSO)
+ goto found;
+ }
+
+ if (bitmap & VIRTIO_NET_STATS_TYPE_TX_SPEED) {
+ desc = &virtnet_stats_tx_speed_desc_qstat[0];
+ num = ARRAY_SIZE(virtnet_stats_tx_speed_desc_qstat);
+ if (reply_type == VIRTIO_NET_STATS_TYPE_REPLY_TX_SPEED)
+ goto found;
+ }
+
+ return;
+
+found:
+ for (i = 0; i < num; ++i) {
+ offset = desc[i].qstat_offset / sizeof(*ctx->data);
+ v = (const __le64 *)(base + desc[i].offset);
+ ctx->data[offset] = le64_to_cpu(*v);
+ }
+}
+
+/* virtnet_fill_stats - copy the stats to qstats or ethtool -S
+ * The stats source is the device or the driver.
+ *
+ * @vi: virtio net info
+ * @qid: the vq id
+ * @ctx: stats ctx (initiated by virtnet_stats_ctx_init())
+ * @base: pointer to the device reply or the driver stats structure.
+ * @drv_stats: designate the base type (device reply, driver stats)
+ * @type: the type of the device reply (if drv_stats is true, this must be zero)
+ */
+static void virtnet_fill_stats(struct virtnet_info *vi, u32 qid,
+ struct virtnet_stats_ctx *ctx,
+ const u8 *base, bool drv_stats, u8 reply_type)
+{
+ u32 queue_type, num_rx, num_tx, num_cq;
+ const struct virtnet_stat_desc *desc;
+ const u64_stats_t *v_stat;
+ u64 offset, bitmap;
+ const __le64 *v;
+ int i, num;
+
+ if (ctx->to_qstat)
+ return virtnet_fill_stats_qstat(vi, qid, ctx, base, drv_stats, reply_type);
+
+ num_cq = ctx->desc_num[VIRTNET_Q_TYPE_CQ];
+ num_rx = ctx->desc_num[VIRTNET_Q_TYPE_RX];
+ num_tx = ctx->desc_num[VIRTNET_Q_TYPE_TX];
+
+ queue_type = vq_type(vi, qid);
+ bitmap = ctx->bitmap[queue_type];
+
+ /* skip the total fields of pairs */
+ offset = num_rx + num_tx;
+
+ if (queue_type == VIRTNET_Q_TYPE_TX) {
+ offset += num_cq + num_rx * vi->curr_queue_pairs + num_tx * (qid / 2);
+
+ num = ARRAY_SIZE(virtnet_sq_stats_desc);
+ if (drv_stats) {
+ desc = &virtnet_sq_stats_desc[0];
+ goto drv_stats;
+ }
+
+ offset += num;
+
+ } else if (queue_type == VIRTNET_Q_TYPE_RX) {
+ offset += num_cq + num_rx * (qid / 2);
+
+ num = ARRAY_SIZE(virtnet_rq_stats_desc);
+ if (drv_stats) {
+ desc = &virtnet_rq_stats_desc[0];
+ goto drv_stats;
+ }
+
+ offset += num;
+ }
+
+ if (bitmap & VIRTIO_NET_STATS_TYPE_CVQ) {
+ desc = &virtnet_stats_cvq_desc[0];
+ num = ARRAY_SIZE(virtnet_stats_cvq_desc);
+ if (reply_type == VIRTIO_NET_STATS_TYPE_REPLY_CVQ)
+ goto found;
+
+ offset += num;
+ }
+
+ if (bitmap & VIRTIO_NET_STATS_TYPE_RX_BASIC) {
+ desc = &virtnet_stats_rx_basic_desc[0];
+ num = ARRAY_SIZE(virtnet_stats_rx_basic_desc);
+ if (reply_type == VIRTIO_NET_STATS_TYPE_REPLY_RX_BASIC)
+ goto found;
+
+ offset += num;
+ }
+
+ if (bitmap & VIRTIO_NET_STATS_TYPE_RX_CSUM) {
+ desc = &virtnet_stats_rx_csum_desc[0];
+ num = ARRAY_SIZE(virtnet_stats_rx_csum_desc);
+ if (reply_type == VIRTIO_NET_STATS_TYPE_REPLY_RX_CSUM)
+ goto found;
+
+ offset += num;
+ }
+
+ if (bitmap & VIRTIO_NET_STATS_TYPE_RX_SPEED) {
+ desc = &virtnet_stats_rx_speed_desc[0];
+ num = ARRAY_SIZE(virtnet_stats_rx_speed_desc);
+ if (reply_type == VIRTIO_NET_STATS_TYPE_REPLY_RX_SPEED)
+ goto found;
+
+ offset += num;
+ }
+
+ if (bitmap & VIRTIO_NET_STATS_TYPE_TX_BASIC) {
+ desc = &virtnet_stats_tx_basic_desc[0];
+ num = ARRAY_SIZE(virtnet_stats_tx_basic_desc);
+ if (reply_type == VIRTIO_NET_STATS_TYPE_REPLY_TX_BASIC)
+ goto found;
+
+ offset += num;
+ }
+
+ if (bitmap & VIRTIO_NET_STATS_TYPE_TX_GSO) {
+ desc = &virtnet_stats_tx_gso_desc[0];
+ num = ARRAY_SIZE(virtnet_stats_tx_gso_desc);
+ if (reply_type == VIRTIO_NET_STATS_TYPE_REPLY_TX_GSO)
+ goto found;
+
+ offset += num;
+ }
+
+ if (bitmap & VIRTIO_NET_STATS_TYPE_TX_SPEED) {
+ desc = &virtnet_stats_tx_speed_desc[0];
+ num = ARRAY_SIZE(virtnet_stats_tx_speed_desc);
+ if (reply_type == VIRTIO_NET_STATS_TYPE_REPLY_TX_SPEED)
+ goto found;
+
+ offset += num;
+ }
+
+ return;
+
+found:
+ for (i = 0; i < num; ++i) {
+ v = (const __le64 *)(base + desc[i].offset);
+ ctx->data[offset + i] = le64_to_cpu(*v);
+ }
+
+ return;
+
+drv_stats:
+ for (i = 0; i < num; ++i) {
+ v_stat = (const u64_stats_t *)(base + desc[i].offset);
+ ctx->data[offset + i] = u64_stats_read(v_stat);
+ }
+}
+
+static int __virtnet_get_hw_stats(struct virtnet_info *vi,
+ struct virtnet_stats_ctx *ctx,
+ struct virtio_net_ctrl_queue_stats *req,
+ int req_size, void *reply, int res_size)
+{
+ struct virtio_net_stats_reply_hdr *hdr;
+ struct scatterlist sgs_in, sgs_out;
+ void *p;
+ u32 qid;
+ int ok;
+
+ sg_init_one(&sgs_out, req, req_size);
+ sg_init_one(&sgs_in, reply, res_size);
+
+ ok = virtnet_send_command_reply(vi, VIRTIO_NET_CTRL_STATS,
+ VIRTIO_NET_CTRL_STATS_GET,
+ &sgs_out, &sgs_in);
+
+ if (!ok)
+ return ok;
+
+ for (p = reply; p - reply < res_size; p += le16_to_cpu(hdr->size)) {
+ hdr = p;
+ qid = le16_to_cpu(hdr->vq_index);
+ virtnet_fill_stats(vi, qid, ctx, p, false, hdr->type);
+ }
+
+ return 0;
+}
+
+static void virtnet_make_stat_req(struct virtnet_info *vi,
+ struct virtnet_stats_ctx *ctx,
+ struct virtio_net_ctrl_queue_stats *req,
+ int qid, int *idx)
+{
+ int qtype = vq_type(vi, qid);
+ u64 bitmap = ctx->bitmap[qtype];
+
+ if (!bitmap)
+ return;
+
+ req->stats[*idx].vq_index = cpu_to_le16(qid);
+ req->stats[*idx].types_bitmap[0] = cpu_to_le64(bitmap);
+ *idx += 1;
+}
+
+/* qid: -1: get stats of all vq.
+ * > 0: get the stats for the special vq. This must not be cvq.
+ */
+static int virtnet_get_hw_stats(struct virtnet_info *vi,
+ struct virtnet_stats_ctx *ctx, int qid)
+{
+ int qnum, i, j, res_size, qtype, last_vq, first_vq;
+ struct virtio_net_ctrl_queue_stats *req;
+ bool enable_cvq;
+ void *reply;
+ int ok;
+
+ if (!virtio_has_feature(vi->vdev, VIRTIO_NET_F_DEVICE_STATS))
+ return 0;
+
+ if (qid == -1) {
+ last_vq = vi->curr_queue_pairs * 2 - 1;
+ first_vq = 0;
+ enable_cvq = true;
+ } else {
+ last_vq = qid;
+ first_vq = qid;
+ enable_cvq = false;
+ }
+
+ qnum = 0;
+ res_size = 0;
+ for (i = first_vq; i <= last_vq ; ++i) {
+ qtype = vq_type(vi, i);
+ if (ctx->bitmap[qtype]) {
+ ++qnum;
+ res_size += ctx->size[qtype];
+ }
+ }
+
+ if (enable_cvq && ctx->bitmap[VIRTNET_Q_TYPE_CQ]) {
+ res_size += ctx->size[VIRTNET_Q_TYPE_CQ];
+ qnum += 1;
+ }
+
+ req = kcalloc(qnum, sizeof(*req), GFP_KERNEL);
+ if (!req)
+ return -ENOMEM;
+
+ reply = kmalloc(res_size, GFP_KERNEL);
+ if (!reply) {
+ kfree(req);
+ return -ENOMEM;
+ }
+
+ j = 0;
+ for (i = first_vq; i <= last_vq ; ++i)
+ virtnet_make_stat_req(vi, ctx, req, i, &j);
+
+ if (enable_cvq)
+ virtnet_make_stat_req(vi, ctx, req, vi->max_queue_pairs * 2, &j);
+
+ ok = __virtnet_get_hw_stats(vi, ctx, req, sizeof(*req) * j, reply, res_size);
+
+ kfree(req);
+ kfree(reply);
+
+ return ok;
+}
+
static void virtnet_get_strings(struct net_device *dev, u32 stringset, u8 *data)
{
struct virtnet_info *vi = netdev_priv(dev);
- unsigned int i, j;
+ unsigned int i;
u8 *p = data;
switch (stringset) {
case ETH_SS_STATS:
- for (i = 0; i < vi->curr_queue_pairs; i++) {
- for (j = 0; j < VIRTNET_RQ_STATS_LEN; j++)
- ethtool_sprintf(&p, "rx_queue_%u_%s", i,
- virtnet_rq_stats_desc[j].desc);
- }
+ /* Generate the total field names. */
+ virtnet_get_stats_string(vi, VIRTNET_Q_TYPE_RX, -1, &p);
+ virtnet_get_stats_string(vi, VIRTNET_Q_TYPE_TX, -1, &p);
- for (i = 0; i < vi->curr_queue_pairs; i++) {
- for (j = 0; j < VIRTNET_SQ_STATS_LEN; j++)
- ethtool_sprintf(&p, "tx_queue_%u_%s", i,
- virtnet_sq_stats_desc[j].desc);
- }
+ virtnet_get_stats_string(vi, VIRTNET_Q_TYPE_CQ, 0, &p);
+
+ for (i = 0; i < vi->curr_queue_pairs; ++i)
+ virtnet_get_stats_string(vi, VIRTNET_Q_TYPE_RX, i, &p);
+
+ for (i = 0; i < vi->curr_queue_pairs; ++i)
+ virtnet_get_stats_string(vi, VIRTNET_Q_TYPE_TX, i, &p);
break;
}
}
@@ -3323,11 +4108,17 @@ static void virtnet_get_strings(struct net_device *dev, u32 stringset, u8 *data)
static int virtnet_get_sset_count(struct net_device *dev, int sset)
{
struct virtnet_info *vi = netdev_priv(dev);
+ struct virtnet_stats_ctx ctx = {0};
+ u32 pair_count;
switch (sset) {
case ETH_SS_STATS:
- return vi->curr_queue_pairs * (VIRTNET_RQ_STATS_LEN +
- VIRTNET_SQ_STATS_LEN);
+ virtnet_stats_ctx_init(vi, &ctx, NULL, false);
+
+ pair_count = ctx.desc_num[VIRTNET_Q_TYPE_RX] + ctx.desc_num[VIRTNET_Q_TYPE_TX];
+
+ return pair_count + ctx.desc_num[VIRTNET_Q_TYPE_CQ] +
+ vi->curr_queue_pairs * pair_count;
default:
return -EOPNOTSUPP;
}
@@ -3337,40 +4128,32 @@ static void virtnet_get_ethtool_stats(struct net_device *dev,
struct ethtool_stats *stats, u64 *data)
{
struct virtnet_info *vi = netdev_priv(dev);
- unsigned int idx = 0, start, i, j;
+ struct virtnet_stats_ctx ctx = {0};
+ unsigned int start, i;
const u8 *stats_base;
- const u64_stats_t *p;
- size_t offset;
+
+ virtnet_stats_ctx_init(vi, &ctx, data, false);
+ if (virtnet_get_hw_stats(vi, &ctx, -1))
+ dev_warn(&vi->dev->dev, "Failed to get hw stats.\n");
for (i = 0; i < vi->curr_queue_pairs; i++) {
struct receive_queue *rq = &vi->rq[i];
+ struct send_queue *sq = &vi->sq[i];
stats_base = (const u8 *)&rq->stats;
do {
start = u64_stats_fetch_begin(&rq->stats.syncp);
- for (j = 0; j < VIRTNET_RQ_STATS_LEN; j++) {
- offset = virtnet_rq_stats_desc[j].offset;
- p = (const u64_stats_t *)(stats_base + offset);
- data[idx + j] = u64_stats_read(p);
- }
+ virtnet_fill_stats(vi, i * 2, &ctx, stats_base, true, 0);
} while (u64_stats_fetch_retry(&rq->stats.syncp, start));
- idx += VIRTNET_RQ_STATS_LEN;
- }
-
- for (i = 0; i < vi->curr_queue_pairs; i++) {
- struct send_queue *sq = &vi->sq[i];
stats_base = (const u8 *)&sq->stats;
do {
start = u64_stats_fetch_begin(&sq->stats.syncp);
- for (j = 0; j < VIRTNET_SQ_STATS_LEN; j++) {
- offset = virtnet_sq_stats_desc[j].offset;
- p = (const u64_stats_t *)(stats_base + offset);
- data[idx + j] = u64_stats_read(p);
- }
+ virtnet_fill_stats(vi, i * 2 + 1, &ctx, stats_base, true, 0);
} while (u64_stats_fetch_retry(&sq->stats.syncp, start));
- idx += VIRTNET_SQ_STATS_LEN;
}
+
+ virtnet_fill_total_fields(vi, &ctx);
}
static void virtnet_get_channels(struct net_device *dev,
@@ -3905,6 +4688,95 @@ static const struct ethtool_ops virtnet_ethtool_ops = {
.set_rxnfc = virtnet_set_rxnfc,
};
+static void virtnet_get_queue_stats_rx(struct net_device *dev, int i,
+ struct netdev_queue_stats_rx *stats)
+{
+ struct virtnet_info *vi = netdev_priv(dev);
+ struct receive_queue *rq = &vi->rq[i];
+ struct virtnet_stats_ctx ctx = {0};
+
+ virtnet_stats_ctx_init(vi, &ctx, (void *)stats, true);
+
+ virtnet_get_hw_stats(vi, &ctx, i * 2);
+ virtnet_fill_stats(vi, i * 2, &ctx, (void *)&rq->stats, true, 0);
+}
+
+static void virtnet_get_queue_stats_tx(struct net_device *dev, int i,
+ struct netdev_queue_stats_tx *stats)
+{
+ struct virtnet_info *vi = netdev_priv(dev);
+ struct send_queue *sq = &vi->sq[i];
+ struct virtnet_stats_ctx ctx = {0};
+
+ virtnet_stats_ctx_init(vi, &ctx, (void *)stats, true);
+
+ virtnet_get_hw_stats(vi, &ctx, i * 2 + 1);
+ virtnet_fill_stats(vi, i * 2 + 1, &ctx, (void *)&sq->stats, true, 0);
+}
+
+static void virtnet_get_base_stats(struct net_device *dev,
+ struct netdev_queue_stats_rx *rx,
+ struct netdev_queue_stats_tx *tx)
+{
+ struct virtnet_info *vi = netdev_priv(dev);
+
+ /* The queue stats of the virtio-net will not be reset. So here we
+ * return 0.
+ */
+ rx->bytes = 0;
+ rx->packets = 0;
+
+ if (vi->device_stats_cap & VIRTIO_NET_STATS_TYPE_RX_BASIC) {
+ rx->hw_drops = 0;
+ rx->hw_drop_overruns = 0;
+ }
+
+ if (vi->device_stats_cap & VIRTIO_NET_STATS_TYPE_RX_CSUM) {
+ rx->csum_unnecessary = 0;
+ rx->csum_none = 0;
+ rx->csum_bad = 0;
+ }
+
+ if (vi->device_stats_cap & VIRTIO_NET_STATS_TYPE_RX_GSO) {
+ rx->hw_gro_packets = 0;
+ rx->hw_gro_bytes = 0;
+ rx->hw_gro_wire_packets = 0;
+ rx->hw_gro_wire_bytes = 0;
+ }
+
+ if (vi->device_stats_cap & VIRTIO_NET_STATS_TYPE_RX_SPEED)
+ rx->hw_drop_ratelimits = 0;
+
+ tx->bytes = 0;
+ tx->packets = 0;
+
+ if (vi->device_stats_cap & VIRTIO_NET_STATS_TYPE_TX_BASIC) {
+ tx->hw_drops = 0;
+ tx->hw_drop_errors = 0;
+ }
+
+ if (vi->device_stats_cap & VIRTIO_NET_STATS_TYPE_TX_CSUM) {
+ tx->csum_none = 0;
+ tx->needs_csum = 0;
+ }
+
+ if (vi->device_stats_cap & VIRTIO_NET_STATS_TYPE_TX_GSO) {
+ tx->hw_gso_packets = 0;
+ tx->hw_gso_bytes = 0;
+ tx->hw_gso_wire_packets = 0;
+ tx->hw_gso_wire_bytes = 0;
+ }
+
+ if (vi->device_stats_cap & VIRTIO_NET_STATS_TYPE_TX_SPEED)
+ tx->hw_drop_ratelimits = 0;
+}
+
+static const struct netdev_stat_ops virtnet_stat_ops = {
+ .get_queue_stats_rx = virtnet_get_queue_stats_rx,
+ .get_queue_stats_tx = virtnet_get_queue_stats_tx,
+ .get_base_stats = virtnet_get_base_stats,
+};
+
static void virtnet_freeze_down(struct virtio_device *vdev)
{
struct virtnet_info *vi = vdev->priv;
@@ -4708,6 +5580,7 @@ static int virtnet_probe(struct virtio_device *vdev)
dev->priv_flags |= IFF_UNICAST_FLT | IFF_LIVE_ADDR_CHANGE |
IFF_TX_SKB_NO_LINEAR;
dev->netdev_ops = &virtnet_netdev;
+ dev->stat_ops = &virtnet_stat_ops;
dev->features = NETIF_F_HIGHDMA;
dev->ethtool_ops = &virtnet_ethtool_ops;
@@ -4936,6 +5809,25 @@ static int virtnet_probe(struct virtio_device *vdev)
}
}
+ if (virtio_has_feature(vi->vdev, VIRTIO_NET_F_DEVICE_STATS)) {
+ struct scatterlist sg;
+ __le64 v;
+
+ sg_init_one(&sg, &vi->ctrl->stats_cap, sizeof(vi->ctrl->stats_cap));
+
+ if (!virtnet_send_command_reply(vi, VIRTIO_NET_CTRL_STATS,
+ VIRTIO_NET_CTRL_STATS_QUERY,
+ NULL, &sg)) {
+ pr_debug("virtio_net: fail to get stats capability\n");
+ rtnl_unlock();
+ err = -EINVAL;
+ goto free_unregister_netdev;
+ }
+
+ v = vi->ctrl->stats_cap.supported_stats_types[0];
+ vi->device_stats_cap = le64_to_cpu(v);
+ }
+
rtnl_unlock();
err = virtnet_cpu_notif_add(vi);
@@ -5064,7 +5956,7 @@ static struct virtio_device_id id_table[] = {
VIRTIO_NET_F_SPEED_DUPLEX, VIRTIO_NET_F_STANDBY, \
VIRTIO_NET_F_RSS, VIRTIO_NET_F_HASH_REPORT, VIRTIO_NET_F_NOTF_COAL, \
VIRTIO_NET_F_VQ_NOTF_COAL, \
- VIRTIO_NET_F_GUEST_HDRLEN
+ VIRTIO_NET_F_GUEST_HDRLEN, VIRTIO_NET_F_DEVICE_STATS
static unsigned int features[] = {
VIRTNET_FEATURES,
diff --git a/include/net/netdev_queues.h b/include/net/netdev_queues.h
index 1ec4085853738..c7ac4539eafc5 100644
--- a/include/net/netdev_queues.h
+++ b/include/net/netdev_queues.h
@@ -9,11 +9,38 @@ struct netdev_queue_stats_rx {
u64 bytes;
u64 packets;
u64 alloc_fail;
+
+ u64 hw_drops;
+ u64 hw_drop_overruns;
+
+ u64 csum_unnecessary;
+ u64 csum_none;
+ u64 csum_bad;
+
+ u64 hw_gro_packets;
+ u64 hw_gro_bytes;
+ u64 hw_gro_wire_packets;
+ u64 hw_gro_wire_bytes;
+
+ u64 hw_drop_ratelimits;
};
struct netdev_queue_stats_tx {
u64 bytes;
u64 packets;
+
+ u64 hw_drops;
+ u64 hw_drop_errors;
+
+ u64 csum_none;
+ u64 needs_csum;
+
+ u64 hw_gso_packets;
+ u64 hw_gso_bytes;
+ u64 hw_gso_wire_packets;
+ u64 hw_gso_wire_bytes;
+
+ u64 hw_drop_ratelimits;
};
/**
diff --git a/include/uapi/linux/netdev.h b/include/uapi/linux/netdev.h
index bb65ee840cdac..cf24f1d9adf83 100644
--- a/include/uapi/linux/netdev.h
+++ b/include/uapi/linux/netdev.h
@@ -146,6 +146,25 @@ enum {
NETDEV_A_QSTATS_TX_PACKETS,
NETDEV_A_QSTATS_TX_BYTES,
NETDEV_A_QSTATS_RX_ALLOC_FAIL,
+ NETDEV_A_QSTATS_RX_HW_DROPS,
+ NETDEV_A_QSTATS_RX_HW_DROP_OVERRUNS,
+ NETDEV_A_QSTATS_RX_CSUM_UNNECESSARY,
+ NETDEV_A_QSTATS_RX_CSUM_NONE,
+ NETDEV_A_QSTATS_RX_CSUM_BAD,
+ NETDEV_A_QSTATS_RX_HW_GRO_PACKETS,
+ NETDEV_A_QSTATS_RX_HW_GRO_BYTES,
+ NETDEV_A_QSTATS_RX_HW_GRO_WIRE_PACKETS,
+ NETDEV_A_QSTATS_RX_HW_GRO_WIRE_BYTES,
+ NETDEV_A_QSTATS_RX_HW_DROP_RATELIMITS,
+ NETDEV_A_QSTATS_TX_HW_DROPS,
+ NETDEV_A_QSTATS_TX_HW_DROP_ERRORS,
+ NETDEV_A_QSTATS_TX_CSUM_NONE,
+ NETDEV_A_QSTATS_TX_NEEDS_CSUM,
+ NETDEV_A_QSTATS_TX_HW_GSO_PACKETS,
+ NETDEV_A_QSTATS_TX_HW_GSO_BYTES,
+ NETDEV_A_QSTATS_TX_HW_GSO_WIRE_PACKETS,
+ NETDEV_A_QSTATS_TX_HW_GSO_WIRE_BYTES,
+ NETDEV_A_QSTATS_TX_HW_DROP_RATELIMITS,
__NETDEV_A_QSTATS_MAX,
NETDEV_A_QSTATS_MAX = (__NETDEV_A_QSTATS_MAX - 1)
diff --git a/include/uapi/linux/virtio_net.h b/include/uapi/linux/virtio_net.h
index cc65ef0f3c3e2..ac9174717ef13 100644
--- a/include/uapi/linux/virtio_net.h
+++ b/include/uapi/linux/virtio_net.h
@@ -56,6 +56,7 @@
#define VIRTIO_NET_F_MQ 22 /* Device supports Receive Flow
* Steering */
#define VIRTIO_NET_F_CTRL_MAC_ADDR 23 /* Set MAC address */
+#define VIRTIO_NET_F_DEVICE_STATS 50 /* Device can provide device-level statistics. */
#define VIRTIO_NET_F_VQ_NOTF_COAL 52 /* Device supports virtqueue notification coalescing */
#define VIRTIO_NET_F_NOTF_COAL 53 /* Device supports notifications coalescing */
#define VIRTIO_NET_F_GUEST_USO4 54 /* Guest can handle USOv4 in. */
@@ -406,4 +407,146 @@ struct virtio_net_ctrl_coal_vq {
struct virtio_net_ctrl_coal coal;
};
+/*
+ * Device Statistics
+ */
+#define VIRTIO_NET_CTRL_STATS 8
+#define VIRTIO_NET_CTRL_STATS_QUERY 0
+#define VIRTIO_NET_CTRL_STATS_GET 1
+
+struct virtio_net_stats_capabilities {
+
+#define VIRTIO_NET_STATS_TYPE_CVQ (1ULL << 32)
+
+#define VIRTIO_NET_STATS_TYPE_RX_BASIC (1ULL << 0)
+#define VIRTIO_NET_STATS_TYPE_RX_CSUM (1ULL << 1)
+#define VIRTIO_NET_STATS_TYPE_RX_GSO (1ULL << 2)
+#define VIRTIO_NET_STATS_TYPE_RX_SPEED (1ULL << 3)
+
+#define VIRTIO_NET_STATS_TYPE_TX_BASIC (1ULL << 16)
+#define VIRTIO_NET_STATS_TYPE_TX_CSUM (1ULL << 17)
+#define VIRTIO_NET_STATS_TYPE_TX_GSO (1ULL << 18)
+#define VIRTIO_NET_STATS_TYPE_TX_SPEED (1ULL << 19)
+
+ __le64 supported_stats_types[1];
+};
+
+struct virtio_net_ctrl_queue_stats {
+ struct {
+ __le16 vq_index;
+ __le16 reserved[3];
+ __le64 types_bitmap[1];
+ } stats[1];
+};
+
+struct virtio_net_stats_reply_hdr {
+#define VIRTIO_NET_STATS_TYPE_REPLY_CVQ 32
+
+#define VIRTIO_NET_STATS_TYPE_REPLY_RX_BASIC 0
+#define VIRTIO_NET_STATS_TYPE_REPLY_RX_CSUM 1
+#define VIRTIO_NET_STATS_TYPE_REPLY_RX_GSO 2
+#define VIRTIO_NET_STATS_TYPE_REPLY_RX_SPEED 3
+
+#define VIRTIO_NET_STATS_TYPE_REPLY_TX_BASIC 16
+#define VIRTIO_NET_STATS_TYPE_REPLY_TX_CSUM 17
+#define VIRTIO_NET_STATS_TYPE_REPLY_TX_GSO 18
+#define VIRTIO_NET_STATS_TYPE_REPLY_TX_SPEED 19
+ __u8 type;
+ __u8 reserved;
+ __le16 vq_index;
+ __le16 reserved1;
+ __le16 size;
+};
+
+struct virtio_net_stats_cvq {
+ struct virtio_net_stats_reply_hdr hdr;
+
+ __le64 command_num;
+ __le64 ok_num;
+};
+
+struct virtio_net_stats_rx_basic {
+ struct virtio_net_stats_reply_hdr hdr;
+
+ __le64 rx_notifications;
+
+ __le64 rx_packets;
+ __le64 rx_bytes;
+
+ __le64 rx_interrupts;
+
+ __le64 rx_drops;
+ __le64 rx_drop_overruns;
+};
+
+struct virtio_net_stats_tx_basic {
+ struct virtio_net_stats_reply_hdr hdr;
+
+ __le64 tx_notifications;
+
+ __le64 tx_packets;
+ __le64 tx_bytes;
+
+ __le64 tx_interrupts;
+
+ __le64 tx_drops;
+ __le64 tx_drop_malformed;
+};
+
+struct virtio_net_stats_rx_csum {
+ struct virtio_net_stats_reply_hdr hdr;
+
+ __le64 rx_csum_valid;
+ __le64 rx_needs_csum;
+ __le64 rx_csum_none;
+ __le64 rx_csum_bad;
+};
+
+struct virtio_net_stats_tx_csum {
+ struct virtio_net_stats_reply_hdr hdr;
+
+ __le64 tx_csum_none;
+ __le64 tx_needs_csum;
+};
+
+struct virtio_net_stats_rx_gso {
+ struct virtio_net_stats_reply_hdr hdr;
+
+ __le64 rx_gso_packets;
+ __le64 rx_gso_bytes;
+ __le64 rx_gso_packets_coalesced;
+ __le64 rx_gso_bytes_coalesced;
+};
+
+struct virtio_net_stats_tx_gso {
+ struct virtio_net_stats_reply_hdr hdr;
+
+ __le64 tx_gso_packets;
+ __le64 tx_gso_bytes;
+ __le64 tx_gso_segments;
+ __le64 tx_gso_segments_bytes;
+ __le64 tx_gso_packets_noseg;
+ __le64 tx_gso_bytes_noseg;
+};
+
+struct virtio_net_stats_rx_speed {
+ struct virtio_net_stats_reply_hdr hdr;
+
+ /* rx_{packets,bytes}_allowance_exceeded are too long. So rename to
+ * short name.
+ */
+ __le64 rx_ratelimit_packets;
+ __le64 rx_ratelimit_bytes;
+};
+
+struct virtio_net_stats_tx_speed {
+ struct virtio_net_stats_reply_hdr hdr;
+
+ /* tx_{packets,bytes}_allowance_exceeded are too long. So rename to
+ * short name.
+ */
+ __le64 tx_ratelimit_packets;
+ __le64 tx_ratelimit_bytes;
+};
+
#endif /* _UAPI_LINUX_VIRTIO_NET_H */
diff --git a/net/core/netdev-genl.c b/net/core/netdev-genl.c
index dd6510f2c6525..4b5054087309e 100644
--- a/net/core/netdev-genl.c
+++ b/net/core/netdev-genl.c
@@ -489,7 +489,17 @@ netdev_nl_stats_write_rx(struct sk_buff *rsp, struct netdev_queue_stats_rx *rx)
{
if (netdev_stat_put(rsp, NETDEV_A_QSTATS_RX_PACKETS, rx->packets) ||
netdev_stat_put(rsp, NETDEV_A_QSTATS_RX_BYTES, rx->bytes) ||
- netdev_stat_put(rsp, NETDEV_A_QSTATS_RX_ALLOC_FAIL, rx->alloc_fail))
+ netdev_stat_put(rsp, NETDEV_A_QSTATS_RX_ALLOC_FAIL, rx->alloc_fail) ||
+ netdev_stat_put(rsp, NETDEV_A_QSTATS_RX_HW_DROPS, rx->hw_drops) ||
+ netdev_stat_put(rsp, NETDEV_A_QSTATS_RX_HW_DROP_OVERRUNS, rx->hw_drop_overruns) ||
+ netdev_stat_put(rsp, NETDEV_A_QSTATS_RX_CSUM_UNNECESSARY, rx->csum_unnecessary) ||
+ netdev_stat_put(rsp, NETDEV_A_QSTATS_RX_CSUM_NONE, rx->csum_none) ||
+ netdev_stat_put(rsp, NETDEV_A_QSTATS_RX_CSUM_BAD, rx->csum_bad) ||
+ netdev_stat_put(rsp, NETDEV_A_QSTATS_RX_HW_GRO_PACKETS, rx->hw_gro_packets) ||
+ netdev_stat_put(rsp, NETDEV_A_QSTATS_RX_HW_GRO_BYTES, rx->hw_gro_bytes) ||
+ netdev_stat_put(rsp, NETDEV_A_QSTATS_RX_HW_GRO_WIRE_PACKETS, rx->hw_gro_wire_packets) ||
+ netdev_stat_put(rsp, NETDEV_A_QSTATS_RX_HW_GRO_WIRE_BYTES, rx->hw_gro_wire_bytes) ||
+ netdev_stat_put(rsp, NETDEV_A_QSTATS_RX_HW_DROP_RATELIMITS, rx->hw_drop_ratelimits))
return -EMSGSIZE;
return 0;
}
@@ -498,7 +508,16 @@ static int
netdev_nl_stats_write_tx(struct sk_buff *rsp, struct netdev_queue_stats_tx *tx)
{
if (netdev_stat_put(rsp, NETDEV_A_QSTATS_TX_PACKETS, tx->packets) ||
- netdev_stat_put(rsp, NETDEV_A_QSTATS_TX_BYTES, tx->bytes))
+ netdev_stat_put(rsp, NETDEV_A_QSTATS_TX_BYTES, tx->bytes) ||
+ netdev_stat_put(rsp, NETDEV_A_QSTATS_TX_HW_DROPS, tx->hw_drops) ||
+ netdev_stat_put(rsp, NETDEV_A_QSTATS_TX_HW_DROP_ERRORS, tx->hw_drop_errors) ||
+ netdev_stat_put(rsp, NETDEV_A_QSTATS_TX_CSUM_NONE, tx->csum_none) ||
+ netdev_stat_put(rsp, NETDEV_A_QSTATS_TX_NEEDS_CSUM, tx->needs_csum) ||
+ netdev_stat_put(rsp, NETDEV_A_QSTATS_TX_HW_GSO_PACKETS, tx->hw_gso_packets) ||
+ netdev_stat_put(rsp, NETDEV_A_QSTATS_TX_HW_GSO_BYTES, tx->hw_gso_bytes) ||
+ netdev_stat_put(rsp, NETDEV_A_QSTATS_TX_HW_GSO_WIRE_PACKETS, tx->hw_gso_wire_packets) ||
+ netdev_stat_put(rsp, NETDEV_A_QSTATS_TX_HW_GSO_WIRE_BYTES, tx->hw_gso_wire_bytes) ||
+ netdev_stat_put(rsp, NETDEV_A_QSTATS_TX_HW_DROP_RATELIMITS, tx->hw_drop_ratelimits))
return -EMSGSIZE;
return 0;
}
diff --git a/tools/include/uapi/linux/netdev.h b/tools/include/uapi/linux/netdev.h
index bb65ee840cdac..cf24f1d9adf83 100644
--- a/tools/include/uapi/linux/netdev.h
+++ b/tools/include/uapi/linux/netdev.h
@@ -146,6 +146,25 @@ enum {
NETDEV_A_QSTATS_TX_PACKETS,
NETDEV_A_QSTATS_TX_BYTES,
NETDEV_A_QSTATS_RX_ALLOC_FAIL,
+ NETDEV_A_QSTATS_RX_HW_DROPS,
+ NETDEV_A_QSTATS_RX_HW_DROP_OVERRUNS,
+ NETDEV_A_QSTATS_RX_CSUM_UNNECESSARY,
+ NETDEV_A_QSTATS_RX_CSUM_NONE,
+ NETDEV_A_QSTATS_RX_CSUM_BAD,
+ NETDEV_A_QSTATS_RX_HW_GRO_PACKETS,
+ NETDEV_A_QSTATS_RX_HW_GRO_BYTES,
+ NETDEV_A_QSTATS_RX_HW_GRO_WIRE_PACKETS,
+ NETDEV_A_QSTATS_RX_HW_GRO_WIRE_BYTES,
+ NETDEV_A_QSTATS_RX_HW_DROP_RATELIMITS,
+ NETDEV_A_QSTATS_TX_HW_DROPS,
+ NETDEV_A_QSTATS_TX_HW_DROP_ERRORS,
+ NETDEV_A_QSTATS_TX_CSUM_NONE,
+ NETDEV_A_QSTATS_TX_NEEDS_CSUM,
+ NETDEV_A_QSTATS_TX_HW_GSO_PACKETS,
+ NETDEV_A_QSTATS_TX_HW_GSO_BYTES,
+ NETDEV_A_QSTATS_TX_HW_GSO_WIRE_PACKETS,
+ NETDEV_A_QSTATS_TX_HW_GSO_WIRE_BYTES,
+ NETDEV_A_QSTATS_TX_HW_DROP_RATELIMITS,
__NETDEV_A_QSTATS_MAX,
NETDEV_A_QSTATS_MAX = (__NETDEV_A_QSTATS_MAX - 1)