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veth: introduce more xdp counters

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Introduce xdp_xmit counter in order to distinguish between XDP_TX and
ndo_xdp_xmit stats. Introduce the following ethtool counters:
- rx_xdp_tx
- rx_xdp_tx_errors
- tx_xdp_xmit
- tx_xdp_xmit_errors
- rx_xdp_redirect

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Lorenzo Bianconi 2020-03-19 17:41:28 +01:00 committed by David S. Miller
parent 66fe4a0788
commit 9152cff0dd
1 changed files with 35 additions and 7 deletions
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42
drivers/net/veth.c
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@ -44,6 +44,9 @@ struct veth_stats {
u64 xdp_redirect;
u64 xdp_drops;
u64 xdp_tx;
u64 xdp_tx_err;
u64 xdp_xmit;
u64 xdp_xmit_err;
};
struct veth_rq_stats {
@ -89,8 +92,13 @@ struct veth_q_stat_desc {
static const struct veth_q_stat_desc veth_rq_stats_desc[] = {
{ "xdp_packets", VETH_RQ_STAT(xdp_packets) },
{ "xdp_bytes", VETH_RQ_STAT(xdp_bytes) },
{ "xdp_drops", VETH_RQ_STAT(xdp_drops) },
{ "rx_drops", VETH_RQ_STAT(rx_drops) },
{ "rx_xdp_redirect", VETH_RQ_STAT(xdp_redirect) },
{ "rx_xdp_drops", VETH_RQ_STAT(xdp_drops) },
{ "rx_xdp_tx", VETH_RQ_STAT(xdp_tx) },
{ "rx_xdp_tx_errors", VETH_RQ_STAT(xdp_tx_err) },
{ "tx_xdp_xmit", VETH_RQ_STAT(xdp_xmit) },
{ "tx_xdp_xmit_errors", VETH_RQ_STAT(xdp_xmit_err) },
};
#define VETH_RQ_STATS_LEN ARRAY_SIZE(veth_rq_stats_desc)
@ -129,7 +137,7 @@ static void veth_get_strings(struct net_device *dev, u32 stringset, u8 *buf)
for (i = 0; i < dev->real_num_rx_queues; i++) {
for (j = 0; j < VETH_RQ_STATS_LEN; j++) {
snprintf(p, ETH_GSTRING_LEN,
"rx_queue_%u_%.11s",
"rx_queue_%u_%.18s",
i, veth_rq_stats_desc[j].desc);
p += ETH_GSTRING_LEN;
}
@ -374,12 +382,13 @@ static int veth_select_rxq(struct net_device *dev)
}
static int veth_xdp_xmit(struct net_device *dev, int n,
struct xdp_frame **frames, u32 flags)
struct xdp_frame **frames,
u32 flags, bool ndo_xmit)
{
struct veth_priv *rcv_priv, *priv = netdev_priv(dev);
unsigned int qidx, max_len;
struct net_device *rcv;
int i, ret, drops = n;
unsigned int max_len;
struct veth_rq *rq;
rcu_read_lock();
@ -395,7 +404,8 @@ static int veth_xdp_xmit(struct net_device *dev, int n,
}
rcv_priv = netdev_priv(rcv);
rq = &rcv_priv->rq[veth_select_rxq(rcv)];
qidx = veth_select_rxq(rcv);
rq = &rcv_priv->rq[qidx];
/* Non-NULL xdp_prog ensures that xdp_ring is initialized on receive
* side. This means an XDP program is loaded on the peer and the peer
* device is up.
@ -424,6 +434,17 @@ static int veth_xdp_xmit(struct net_device *dev, int n,
if (flags & XDP_XMIT_FLUSH)
__veth_xdp_flush(rq);
rq = &priv->rq[qidx];
u64_stats_update_begin(&rq->stats.syncp);
if (ndo_xmit) {
rq->stats.vs.xdp_xmit += n - drops;
rq->stats.vs.xdp_xmit_err += drops;
} else {
rq->stats.vs.xdp_tx += n - drops;
rq->stats.vs.xdp_tx_err += drops;
}
u64_stats_update_end(&rq->stats.syncp);
if (likely(!drops)) {
rcu_read_unlock();
return n;
@ -437,11 +458,17 @@ drop:
return ret;
}
static int veth_ndo_xdp_xmit(struct net_device *dev, int n,
struct xdp_frame **frames, u32 flags)
{
return veth_xdp_xmit(dev, n, frames, flags, true);
}
static void veth_xdp_flush_bq(struct net_device *dev, struct veth_xdp_tx_bq *bq)
{
int sent, i, err = 0;
sent = veth_xdp_xmit(dev, bq->count, bq->q, 0);
sent = veth_xdp_xmit(dev, bq->count, bq->q, 0, false);
if (sent < 0) {
err = sent;
sent = 0;
@ -753,6 +780,7 @@ static int veth_xdp_rcv(struct veth_rq *rq, int budget,
}
u64_stats_update_begin(&rq->stats.syncp);
rq->stats.vs.xdp_redirect += stats->xdp_redirect;
rq->stats.vs.xdp_bytes += stats->xdp_bytes;
rq->stats.vs.xdp_drops += stats->xdp_drops;
rq->stats.vs.rx_drops += stats->rx_drops;
@ -1172,7 +1200,7 @@ static const struct net_device_ops veth_netdev_ops = {
.ndo_features_check = passthru_features_check,
.ndo_set_rx_headroom = veth_set_rx_headroom,
.ndo_bpf = veth_xdp,
.ndo_xdp_xmit = veth_xdp_xmit,
.ndo_xdp_xmit = veth_ndo_xdp_xmit,
};
#define VETH_FEATURES (NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_HW_CSUM | \