diff options
| -rw-r--r-- | drivers/net/veth.c | 159 |
1 files changed, 97 insertions, 62 deletions
diff --git a/drivers/net/veth.c b/drivers/net/veth.c index b6505a6c7102..aece0e5eec8c 100644 --- a/drivers/net/veth.c +++ b/drivers/net/veth.c @@ -45,8 +45,8 @@ struct veth_stats { u64 xdp_drops; u64 xdp_tx; u64 xdp_tx_err; - u64 xdp_xmit; - u64 xdp_xmit_err; + u64 peer_tq_xdp_xmit; + u64 peer_tq_xdp_xmit_err; }; struct veth_rq_stats { @@ -92,17 +92,22 @@ 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) }, - { "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) }, + { "drops", VETH_RQ_STAT(rx_drops) }, + { "xdp_redirect", VETH_RQ_STAT(xdp_redirect) }, + { "xdp_drops", VETH_RQ_STAT(xdp_drops) }, + { "xdp_tx", VETH_RQ_STAT(xdp_tx) }, + { "xdp_tx_errors", VETH_RQ_STAT(xdp_tx_err) }, }; #define VETH_RQ_STATS_LEN ARRAY_SIZE(veth_rq_stats_desc) +static const struct veth_q_stat_desc veth_tq_stats_desc[] = { + { "xdp_xmit", VETH_RQ_STAT(peer_tq_xdp_xmit) }, + { "xdp_xmit_errors", VETH_RQ_STAT(peer_tq_xdp_xmit_err) }, +}; + +#define VETH_TQ_STATS_LEN ARRAY_SIZE(veth_tq_stats_desc) + static struct { const char string[ETH_GSTRING_LEN]; } ethtool_stats_keys[] = { @@ -142,6 +147,14 @@ static void veth_get_strings(struct net_device *dev, u32 stringset, u8 *buf) p += ETH_GSTRING_LEN; } } + for (i = 0; i < dev->real_num_tx_queues; i++) { + for (j = 0; j < VETH_TQ_STATS_LEN; j++) { + snprintf(p, ETH_GSTRING_LEN, + "tx_queue_%u_%.18s", + i, veth_tq_stats_desc[j].desc); + p += ETH_GSTRING_LEN; + } + } break; } } @@ -151,7 +164,8 @@ static int veth_get_sset_count(struct net_device *dev, int sset) switch (sset) { case ETH_SS_STATS: return ARRAY_SIZE(ethtool_stats_keys) + - VETH_RQ_STATS_LEN * dev->real_num_rx_queues; + VETH_RQ_STATS_LEN * dev->real_num_rx_queues + + VETH_TQ_STATS_LEN * dev->real_num_tx_queues; default: return -EOPNOTSUPP; } @@ -160,7 +174,7 @@ static int veth_get_sset_count(struct net_device *dev, int sset) static void veth_get_ethtool_stats(struct net_device *dev, struct ethtool_stats *stats, u64 *data) { - struct veth_priv *priv = netdev_priv(dev); + struct veth_priv *rcv_priv, *priv = netdev_priv(dev); struct net_device *peer = rtnl_dereference(priv->peer); int i, j, idx; @@ -181,6 +195,26 @@ static void veth_get_ethtool_stats(struct net_device *dev, } while (u64_stats_fetch_retry_irq(&rq_stats->syncp, start)); idx += VETH_RQ_STATS_LEN; } + + if (!peer) + return; + + rcv_priv = netdev_priv(peer); + for (i = 0; i < peer->real_num_rx_queues; i++) { + const struct veth_rq_stats *rq_stats = &rcv_priv->rq[i].stats; + const void *base = (void *)&rq_stats->vs; + unsigned int start, tx_idx = idx; + size_t offset; + + tx_idx += (i % dev->real_num_tx_queues) * VETH_TQ_STATS_LEN; + do { + start = u64_stats_fetch_begin_irq(&rq_stats->syncp); + for (j = 0; j < VETH_TQ_STATS_LEN; j++) { + offset = veth_tq_stats_desc[j].offset; + data[tx_idx + j] += *(u64 *)(base + offset); + } + } while (u64_stats_fetch_retry_irq(&rq_stats->syncp, start)); + } } static const struct ethtool_ops veth_ethtool_ops = { @@ -301,25 +335,25 @@ static void veth_stats_rx(struct veth_stats *result, struct net_device *dev) struct veth_priv *priv = netdev_priv(dev); int i; - result->xdp_xmit_err = 0; + result->peer_tq_xdp_xmit_err = 0; result->xdp_packets = 0; result->xdp_tx_err = 0; result->xdp_bytes = 0; result->rx_drops = 0; for (i = 0; i < dev->num_rx_queues; i++) { - u64 packets, bytes, drops, xdp_tx_err, xdp_xmit_err; + u64 packets, bytes, drops, xdp_tx_err, peer_tq_xdp_xmit_err; struct veth_rq_stats *stats = &priv->rq[i].stats; unsigned int start; do { start = u64_stats_fetch_begin_irq(&stats->syncp); - xdp_xmit_err = stats->vs.xdp_xmit_err; + peer_tq_xdp_xmit_err = stats->vs.peer_tq_xdp_xmit_err; xdp_tx_err = stats->vs.xdp_tx_err; packets = stats->vs.xdp_packets; bytes = stats->vs.xdp_bytes; drops = stats->vs.rx_drops; } while (u64_stats_fetch_retry_irq(&stats->syncp, start)); - result->xdp_xmit_err += xdp_xmit_err; + result->peer_tq_xdp_xmit_err += peer_tq_xdp_xmit_err; result->xdp_tx_err += xdp_tx_err; result->xdp_packets += packets; result->xdp_bytes += bytes; @@ -340,8 +374,8 @@ static void veth_get_stats64(struct net_device *dev, tot->tx_packets = packets; veth_stats_rx(&rx, dev); - tot->tx_dropped += rx.xdp_xmit_err + rx.xdp_tx_err; - tot->rx_dropped = rx.rx_drops; + tot->tx_dropped += rx.xdp_tx_err; + tot->rx_dropped = rx.rx_drops + rx.peer_tq_xdp_xmit_err; tot->rx_bytes = rx.xdp_bytes; tot->rx_packets = rx.xdp_packets; @@ -353,7 +387,8 @@ static void veth_get_stats64(struct net_device *dev, tot->rx_packets += packets; veth_stats_rx(&rx, peer); - tot->rx_dropped += rx.xdp_xmit_err + rx.xdp_tx_err; + tot->tx_dropped += rx.peer_tq_xdp_xmit_err; + tot->rx_dropped += rx.xdp_tx_err; tot->tx_bytes += rx.xdp_bytes; tot->tx_packets += rx.xdp_packets; } @@ -394,38 +429,28 @@ static int veth_xdp_xmit(struct net_device *dev, int n, u32 flags, bool ndo_xmit) { struct veth_priv *rcv_priv, *priv = netdev_priv(dev); - unsigned int qidx, max_len; + int i, ret = -ENXIO, drops = 0; struct net_device *rcv; - int i, ret, drops = n; + unsigned int max_len; struct veth_rq *rq; - rcu_read_lock(); - if (unlikely(flags & ~XDP_XMIT_FLAGS_MASK)) { - rcu_read_unlock(); - atomic64_add(drops, &priv->dropped); + if (unlikely(flags & ~XDP_XMIT_FLAGS_MASK)) return -EINVAL; - } + rcu_read_lock(); rcv = rcu_dereference(priv->peer); - if (unlikely(!rcv)) { - rcu_read_unlock(); - atomic64_add(drops, &priv->dropped); - return -ENXIO; - } + if (unlikely(!rcv)) + goto out; rcv_priv = netdev_priv(rcv); - qidx = veth_select_rxq(rcv); - rq = &rcv_priv->rq[qidx]; + rq = &rcv_priv->rq[veth_select_rxq(rcv)]; /* 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. */ - if (!rcu_access_pointer(rq->xdp_prog)) { - ret = -ENXIO; - goto drop; - } + if (!rcu_access_pointer(rq->xdp_prog)) + goto out; - drops = 0; max_len = rcv->mtu + rcv->hard_header_len + VLAN_HLEN; spin_lock(&rq->xdp_ring.producer_lock); @@ -445,18 +470,14 @@ static int veth_xdp_xmit(struct net_device *dev, int n, __veth_xdp_flush(rq); ret = n - drops; -drop: - 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_begin(&rq->stats.syncp); + rq->stats.vs.peer_tq_xdp_xmit += n - drops; + rq->stats.vs.peer_tq_xdp_xmit_err += drops; + u64_stats_update_end(&rq->stats.syncp); } - u64_stats_update_end(&rq->stats.syncp); +out: rcu_read_unlock(); return ret; @@ -465,49 +486,63 @@ drop: 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); + int err; + + err = veth_xdp_xmit(dev, n, frames, flags, true); + if (err < 0) { + struct veth_priv *priv = netdev_priv(dev); + + atomic64_add(n, &priv->dropped); + } + + return err; } -static void veth_xdp_flush_bq(struct net_device *dev, struct veth_xdp_tx_bq *bq) +static void veth_xdp_flush_bq(struct veth_rq *rq, struct veth_xdp_tx_bq *bq) { int sent, i, err = 0; - sent = veth_xdp_xmit(dev, bq->count, bq->q, 0, false); + sent = veth_xdp_xmit(rq->dev, bq->count, bq->q, 0, false); if (sent < 0) { err = sent; sent = 0; for (i = 0; i < bq->count; i++) xdp_return_frame(bq->q[i]); } - trace_xdp_bulk_tx(dev, sent, bq->count - sent, err); + trace_xdp_bulk_tx(rq->dev, sent, bq->count - sent, err); + + u64_stats_update_begin(&rq->stats.syncp); + rq->stats.vs.xdp_tx += sent; + rq->stats.vs.xdp_tx_err += bq->count - sent; + u64_stats_update_end(&rq->stats.syncp); bq->count = 0; } -static void veth_xdp_flush(struct net_device *dev, struct veth_xdp_tx_bq *bq) +static void veth_xdp_flush(struct veth_rq *rq, struct veth_xdp_tx_bq *bq) { - struct veth_priv *rcv_priv, *priv = netdev_priv(dev); + struct veth_priv *rcv_priv, *priv = netdev_priv(rq->dev); struct net_device *rcv; - struct veth_rq *rq; + struct veth_rq *rcv_rq; rcu_read_lock(); - veth_xdp_flush_bq(dev, bq); + veth_xdp_flush_bq(rq, bq); rcv = rcu_dereference(priv->peer); if (unlikely(!rcv)) goto out; rcv_priv = netdev_priv(rcv); - rq = &rcv_priv->rq[veth_select_rxq(rcv)]; + rcv_rq = &rcv_priv->rq[veth_select_rxq(rcv)]; /* xdp_ring is initialized on receive side? */ - if (unlikely(!rcu_access_pointer(rq->xdp_prog))) + if (unlikely(!rcu_access_pointer(rcv_rq->xdp_prog))) goto out; - __veth_xdp_flush(rq); + __veth_xdp_flush(rcv_rq); out: rcu_read_unlock(); } -static int veth_xdp_tx(struct net_device *dev, struct xdp_buff *xdp, +static int veth_xdp_tx(struct veth_rq *rq, struct xdp_buff *xdp, struct veth_xdp_tx_bq *bq) { struct xdp_frame *frame = convert_to_xdp_frame(xdp); @@ -516,7 +551,7 @@ static int veth_xdp_tx(struct net_device *dev, struct xdp_buff *xdp, return -EOVERFLOW; if (unlikely(bq->count == VETH_XDP_TX_BULK_SIZE)) - veth_xdp_flush_bq(dev, bq); + veth_xdp_flush_bq(rq, bq); bq->q[bq->count++] = frame; @@ -559,7 +594,7 @@ static struct sk_buff *veth_xdp_rcv_one(struct veth_rq *rq, orig_frame = *frame; xdp.data_hard_start = head; xdp.rxq->mem = frame->mem; - if (unlikely(veth_xdp_tx(rq->dev, &xdp, bq) < 0)) { + if (unlikely(veth_xdp_tx(rq, &xdp, bq) < 0)) { trace_xdp_exception(rq->dev, xdp_prog, act); frame = &orig_frame; stats->rx_drops++; @@ -692,7 +727,7 @@ static struct sk_buff *veth_xdp_rcv_skb(struct veth_rq *rq, get_page(virt_to_page(xdp.data)); consume_skb(skb); xdp.rxq->mem = rq->xdp_mem; - if (unlikely(veth_xdp_tx(rq->dev, &xdp, bq) < 0)) { + if (unlikely(veth_xdp_tx(rq, &xdp, bq) < 0)) { trace_xdp_exception(rq->dev, xdp_prog, act); stats->rx_drops++; goto err_xdp; @@ -817,7 +852,7 @@ static int veth_poll(struct napi_struct *napi, int budget) } if (stats.xdp_tx > 0) - veth_xdp_flush(rq->dev, &bq); + veth_xdp_flush(rq, &bq); if (stats.xdp_redirect > 0) xdp_do_flush(); xdp_clear_return_frame_no_direct(); |