Commit d806e1ff authored by Xuan Zhuo's avatar Xuan Zhuo Committed by Paolo Abeni
Browse files

virtio_net: add the total stats field 



Now, we just show the stats of every queue.

But for the user, the total values of every stat may are valuable.

NIC statistics:
     rx_packets: 373522
     rx_bytes: 85919736
     rx_drops: 0
     rx_xdp_packets: 0
     rx_xdp_tx: 0
     rx_xdp_redirects: 0
     rx_xdp_drops: 0
     rx_kicks: 11125
     rx_hw_notifications: 0
     rx_hw_packets: 1325870
     rx_hw_bytes: 263348963
     rx_hw_interrupts: 0
     rx_hw_drops: 1451
     rx_hw_drop_overruns: 0
     rx_hw_csum_valid: 1325870
     rx_hw_needs_csum: 1325870
     rx_hw_csum_none: 0
     rx_hw_csum_bad: 0
     rx_hw_ratelimit_packets: 0
     rx_hw_ratelimit_bytes: 0
     tx_packets: 10050
     tx_bytes: 1230176
     tx_xdp_tx: 0
     tx_xdp_tx_drops: 0
     tx_kicks: 10050
     tx_timeouts: 0
     tx_hw_notifications: 0
     tx_hw_packets: 32281
     tx_hw_bytes: 4315590
     tx_hw_interrupts: 0
     tx_hw_drops: 0
     tx_hw_drop_malformed: 0
     tx_hw_csum_none: 0
     tx_hw_needs_csum: 32281
     tx_hw_ratelimit_packets: 0
     tx_hw_ratelimit_bytes: 0
     rx0_packets: 373522
     rx0_bytes: 85919736
     rx0_drops: 0
     rx0_xdp_packets: 0
     rx0_xdp_tx: 0
     rx0_xdp_redirects: 0
     rx0_xdp_drops: 0
     rx0_kicks: 11125
     rx0_hw_notifications: 0
     rx0_hw_packets: 1325870
     rx0_hw_bytes: 263348963
     rx0_hw_interrupts: 0
     rx0_hw_drops: 1451
     rx0_hw_drop_overruns: 0
     rx0_hw_csum_valid: 1325870
     rx0_hw_needs_csum: 1325870
     rx0_hw_csum_none: 0
     rx0_hw_csum_bad: 0
     rx0_hw_ratelimit_packets: 0
     rx0_hw_ratelimit_bytes: 0
     tx0_packets: 10050
     tx0_bytes: 1230176
     tx0_xdp_tx: 0
     tx0_xdp_tx_drops: 0
     tx0_kicks: 10050
     tx0_timeouts: 0
     tx0_hw_notifications: 0
     tx0_hw_packets: 32281
     tx0_hw_bytes: 4315590
     tx0_hw_interrupts: 0
     tx0_hw_drops: 0
     tx0_hw_drop_malformed: 0
     tx0_hw_csum_none: 0
     tx0_hw_needs_csum: 32281
     tx0_hw_ratelimit_packets: 0
     tx0_hw_ratelimit_bytes: 0

Signed-off-by: default avatarXuan Zhuo <xuanzhuo@linux.alibaba.com>
Signed-off-by: default avatarPaolo Abeni <pabeni@redhat.com>
parent d86769b9

drivers/net/virtio_net.c

+69 −12
Original line number Diff line number Diff line
@@ -3383,14 +3383,15 @@ static void virtnet_stats_sprintf(u8 **p, const char *fmt, const char *noq_fmt, 
	}

}



/* 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 = 0;

	u32 num;



	if (type == VIRTNET_Q_TYPE_CQ) {

	if (type == VIRTNET_Q_TYPE_CQ && qid >= 0) {

		noq_fmt = "cq_hw_%s";



		if (vi->device_stats_cap & VIRTIO_NET_STATS_TYPE_CVQ) {
@@ -3403,65 +3404,69 @@ static void virtnet_get_stats_string(struct virtnet_info *vi, int type, int qid, 


	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, NULL, num, qid, 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, NULL, num, qid, 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, NULL, num, qid, 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, NULL, num, qid, 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, NULL, num, qid, 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, NULL, num, qid, 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, NULL, num, qid, 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, NULL, num, qid, desc);

			virtnet_stats_sprintf(&p, fmt, noq_fmt, num, qid, desc);

		}

	}
@@ -3542,6 +3547,49 @@ static void virtnet_stats_ctx_init(struct virtnet_info *vi, 
	}

}



/* 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);

}



/* virtnet_fill_stats - copy the stats to ethtool -S

 * The stats source is the device or the driver.

 *
@@ -3569,7 +3617,9 @@ static void virtnet_fill_stats(struct virtnet_info *vi, u32 qid, 


	queue_type = vq_type(vi, qid);

	bitmap = ctx->bitmap[queue_type];

	offset = 0;



	/* 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);
@@ -3780,6 +3830,10 @@ static void virtnet_get_strings(struct net_device *dev, u32 stringset, u8 *data) 


	switch (stringset) {

	case ETH_SS_STATS:

		/* 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);



		virtnet_get_stats_string(vi, VIRTNET_Q_TYPE_CQ, 0, &p);



		for (i = 0; i < vi->curr_queue_pairs; ++i)
@@ -3803,7 +3857,8 @@ static int virtnet_get_sset_count(struct net_device *dev, int sset) 


		pair_count = ctx.desc_num[VIRTNET_Q_TYPE_RX] + ctx.desc_num[VIRTNET_Q_TYPE_TX];



		return ctx.desc_num[VIRTNET_Q_TYPE_CQ] + vi->curr_queue_pairs * pair_count;

		return pair_count + ctx.desc_num[VIRTNET_Q_TYPE_CQ] +

			vi->curr_queue_pairs * pair_count;

	default:

		return -EOPNOTSUPP;

	}
@@ -3837,6 +3892,8 @@ static void virtnet_get_ethtool_stats(struct net_device *dev, 
			virtnet_fill_stats(vi, i * 2 + 1, &ctx, stats_base, true, 0);

		} while (u64_stats_fetch_retry(&sq->stats.syncp, start));

	}



	virtnet_fill_total_fields(vi, &ctx);

}



static void virtnet_get_channels(struct net_device *dev,