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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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mlx4_en: Moving to work with GRO
Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Yevgeny Petrilin
David S. Miller
parent
0533943c5c
commit
fa37a9586f
@ -39,21 +39,6 @@
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#include "en_port.h"
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static void mlx4_en_update_lro_stats(struct mlx4_en_priv *priv)
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{
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int i;
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priv->port_stats.lro_aggregated = 0;
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priv->port_stats.lro_flushed = 0;
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priv->port_stats.lro_no_desc = 0;
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for (i = 0; i < priv->rx_ring_num; i++) {
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priv->port_stats.lro_aggregated += priv->rx_ring[i].lro.stats.aggregated;
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priv->port_stats.lro_flushed += priv->rx_ring[i].lro.stats.flushed;
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priv->port_stats.lro_no_desc += priv->rx_ring[i].lro.stats.no_desc;
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}
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}
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static void
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mlx4_en_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *drvinfo)
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{
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@ -112,7 +97,7 @@ static const char main_strings[][ETH_GSTRING_LEN] = {
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"tx_heartbeat_errors", "tx_window_errors",
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/* port statistics */
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"lro_aggregated", "lro_flushed", "lro_no_desc", "tso_packets",
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"tso_packets",
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"queue_stopped", "wake_queue", "tx_timeout", "rx_alloc_failed",
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"rx_csum_good", "rx_csum_none", "tx_chksum_offload",
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@ -122,7 +107,7 @@ static const char main_strings[][ETH_GSTRING_LEN] = {
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"tx_prio_1", "tx_prio_2", "tx_prio_3", "tx_prio_4", "tx_prio_5",
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"tx_prio_6", "tx_prio_7",
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};
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#define NUM_MAIN_STATS 21
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#define NUM_MAIN_STATS 18
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#define NUM_ALL_STATS (NUM_MAIN_STATS + NUM_PORT_STATS + NUM_PKT_STATS + NUM_PERF_STATS)
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static const char mlx4_en_test_names[][ETH_GSTRING_LEN]= {
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@ -174,8 +159,6 @@ static void mlx4_en_get_ethtool_stats(struct net_device *dev,
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spin_lock_bh(&priv->stats_lock);
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mlx4_en_update_lro_stats(priv);
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for (i = 0; i < NUM_MAIN_STATS; i++)
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data[index++] = ((unsigned long *) &priv->stats)[i];
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for (i = 0; i < NUM_PORT_STATS; i++)
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@ -439,40 +422,6 @@ static void mlx4_en_get_ringparam(struct net_device *dev,
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param->tx_pending = priv->tx_ring[0].size;
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}
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static int mlx4_ethtool_op_set_flags(struct net_device *dev, u32 data)
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{
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struct mlx4_en_priv *priv = netdev_priv(dev);
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struct mlx4_en_dev *mdev = priv->mdev;
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int rc = 0;
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int changed = 0;
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if (data & ~ETH_FLAG_LRO)
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return -EOPNOTSUPP;
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if (data & ETH_FLAG_LRO) {
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if (!(dev->features & NETIF_F_LRO))
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changed = 1;
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} else if (dev->features & NETIF_F_LRO) {
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changed = 1;
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}
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if (changed) {
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if (netif_running(dev)) {
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mutex_lock(&mdev->state_lock);
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mlx4_en_stop_port(dev);
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}
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dev->features ^= NETIF_F_LRO;
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if (netif_running(dev)) {
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rc = mlx4_en_start_port(dev);
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if (rc)
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en_err(priv, "Failed to restart port\n");
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mutex_unlock(&mdev->state_lock);
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}
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}
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return rc;
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}
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const struct ethtool_ops mlx4_en_ethtool_ops = {
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.get_drvinfo = mlx4_en_get_drvinfo,
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.get_settings = mlx4_en_get_settings,
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@ -502,7 +451,6 @@ const struct ethtool_ops mlx4_en_ethtool_ops = {
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.get_ringparam = mlx4_en_get_ringparam,
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.set_ringparam = mlx4_en_set_ringparam,
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.get_flags = ethtool_op_get_flags,
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.set_flags = mlx4_ethtool_op_set_flags,
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};
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@ -1047,7 +1047,7 @@ int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
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dev->features |= NETIF_F_HW_VLAN_TX |
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NETIF_F_HW_VLAN_RX |
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NETIF_F_HW_VLAN_FILTER;
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dev->features |= NETIF_F_LRO;
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dev->features |= NETIF_F_GRO;
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if (mdev->LSO_support) {
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dev->features |= NETIF_F_TSO;
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dev->features |= NETIF_F_TSO6;
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@ -42,18 +42,6 @@
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#include "mlx4_en.h"
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static int mlx4_en_get_frag_header(struct skb_frag_struct *frags, void **mac_hdr,
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void **ip_hdr, void **tcpudp_hdr,
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u64 *hdr_flags, void *priv)
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{
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*mac_hdr = page_address(frags->page) + frags->page_offset;
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*ip_hdr = *mac_hdr + ETH_HLEN;
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*tcpudp_hdr = (struct tcphdr *)(*ip_hdr + sizeof(struct iphdr));
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*hdr_flags = LRO_IPV4 | LRO_TCP;
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return 0;
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}
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static int mlx4_en_alloc_frag(struct mlx4_en_priv *priv,
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struct mlx4_en_rx_desc *rx_desc,
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struct skb_frag_struct *skb_frags,
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@ -312,24 +300,6 @@ int mlx4_en_create_rx_ring(struct mlx4_en_priv *priv,
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}
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ring->buf = ring->wqres.buf.direct.buf;
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/* Configure lro mngr */
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memset(&ring->lro, 0, sizeof(struct net_lro_mgr));
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ring->lro.dev = priv->dev;
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ring->lro.features = LRO_F_NAPI;
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ring->lro.frag_align_pad = NET_IP_ALIGN;
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ring->lro.ip_summed = CHECKSUM_UNNECESSARY;
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ring->lro.ip_summed_aggr = CHECKSUM_UNNECESSARY;
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ring->lro.max_desc = MLX4_EN_MAX_LRO_DESCRIPTORS;
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ring->lro.max_aggr = MAX_SKB_FRAGS;
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ring->lro.lro_arr = kcalloc(MLX4_EN_MAX_LRO_DESCRIPTORS,
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sizeof(struct net_lro_desc),
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GFP_KERNEL);
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if (!ring->lro.lro_arr) {
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en_err(priv, "Failed to allocate lro array\n");
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goto err_map;
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}
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ring->lro.get_frag_header = mlx4_en_get_frag_header;
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return 0;
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err_map:
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@ -412,7 +382,6 @@ void mlx4_en_destroy_rx_ring(struct mlx4_en_priv *priv,
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{
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struct mlx4_en_dev *mdev = priv->mdev;
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kfree(ring->lro.lro_arr);
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mlx4_en_unmap_buffer(&ring->wqres.buf);
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mlx4_free_hwq_res(mdev->dev, &ring->wqres, ring->buf_size + TXBB_SIZE);
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vfree(ring->rx_info);
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@ -563,7 +532,6 @@ int mlx4_en_process_rx_cq(struct net_device *dev, struct mlx4_en_cq *cq, int bud
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struct mlx4_cqe *cqe;
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struct mlx4_en_rx_ring *ring = &priv->rx_ring[cq->ring];
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struct skb_frag_struct *skb_frags;
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struct skb_frag_struct lro_frags[MLX4_EN_MAX_RX_FRAGS];
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struct mlx4_en_rx_desc *rx_desc;
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struct sk_buff *skb;
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int index;
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@ -623,37 +591,33 @@ int mlx4_en_process_rx_cq(struct net_device *dev, struct mlx4_en_cq *cq, int bud
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* - TCP/IP (v4)
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* - without IP options
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* - not an IP fragment */
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if (mlx4_en_can_lro(cqe->status) &&
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dev->features & NETIF_F_LRO) {
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if (dev->features & NETIF_F_GRO) {
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struct sk_buff *gro_skb = napi_get_frags(&cq->napi);
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nr = mlx4_en_complete_rx_desc(
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priv, rx_desc,
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skb_frags, lro_frags,
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skb_frags, skb_shinfo(gro_skb)->frags,
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ring->page_alloc, length);
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if (!nr)
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goto next;
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skb_shinfo(gro_skb)->nr_frags = nr;
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gro_skb->len = length;
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gro_skb->data_len = length;
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gro_skb->truesize += length;
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gro_skb->ip_summed = CHECKSUM_UNNECESSARY;
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if (priv->vlgrp && (cqe->vlan_my_qpn &
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cpu_to_be32(MLX4_CQE_VLAN_PRESENT_MASK))) {
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lro_vlan_hwaccel_receive_frags(
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&ring->lro, lro_frags,
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length, length,
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priv->vlgrp,
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be16_to_cpu(cqe->sl_vid),
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NULL, 0);
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} else
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lro_receive_frags(&ring->lro,
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lro_frags,
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length,
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length,
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NULL, 0);
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cpu_to_be32(MLX4_CQE_VLAN_PRESENT_MASK)))
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vlan_gro_frags(&cq->napi, priv->vlgrp, be16_to_cpu(cqe->sl_vid));
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else
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napi_gro_frags(&cq->napi);
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goto next;
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}
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/* LRO not possible, complete processing here */
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ip_summed = CHECKSUM_UNNECESSARY;
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INC_PERF_COUNTER(priv->pstats.lro_misses);
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} else {
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ip_summed = CHECKSUM_NONE;
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priv->port_stats.rx_chksum_none++;
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@ -694,14 +658,10 @@ int mlx4_en_process_rx_cq(struct net_device *dev, struct mlx4_en_cq *cq, int bud
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if (++polled == budget) {
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/* We are here because we reached the NAPI budget -
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* flush only pending LRO sessions */
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lro_flush_all(&ring->lro);
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goto out;
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}
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}
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/* If CQ is empty flush all LRO sessions unconditionally */
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lro_flush_all(&ring->lro);
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out:
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AVG_PERF_COUNTER(priv->pstats.rx_coal_avg, polled);
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mlx4_cq_set_ci(&cq->mcq);
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@ -38,6 +38,7 @@
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#include <linux/skbuff.h>
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#include <linux/if_vlan.h>
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#include <linux/vmalloc.h>
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#include <linux/tcp.h>
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#include "mlx4_en.h"
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@ -38,7 +38,6 @@
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#include <linux/list.h>
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#include <linux/mutex.h>
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#include <linux/netdevice.h>
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#include <linux/inet_lro.h>
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#include <linux/mlx4/device.h>
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#include <linux/mlx4/qp.h>
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@ -254,7 +253,6 @@ struct mlx4_en_rx_desc {
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struct mlx4_en_rx_ring {
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struct mlx4_hwq_resources wqres;
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struct mlx4_en_rx_alloc page_alloc[MLX4_EN_MAX_RX_FRAGS];
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struct net_lro_mgr lro;
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u32 size ; /* number of Rx descs*/
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u32 actual_size;
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u32 size_mask;
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@ -379,9 +377,6 @@ struct mlx4_en_pkt_stats {
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};
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struct mlx4_en_port_stats {
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unsigned long lro_aggregated;
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unsigned long lro_flushed;
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unsigned long lro_no_desc;
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unsigned long tso_packets;
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unsigned long queue_stopped;
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unsigned long wake_queue;
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