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mlx4_en: Moving to work with GRO

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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 2010-08-24 03:46:46 +00:00 committed by David S. Miller
parent 0533943c5c
commit fa37a9586f
5 changed files with 17 additions and 113 deletions
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56
drivers/net/mlx4/en_ethtool.c
View File

@ -39,21 +39,6 @@
#include "en_port.h"
static void mlx4_en_update_lro_stats(struct mlx4_en_priv *priv)
{
int i;
priv->port_stats.lro_aggregated = 0;
priv->port_stats.lro_flushed = 0;
priv->port_stats.lro_no_desc = 0;
for (i = 0; i < priv->rx_ring_num; i++) {
priv->port_stats.lro_aggregated += priv->rx_ring[i].lro.stats.aggregated;
priv->port_stats.lro_flushed += priv->rx_ring[i].lro.stats.flushed;
priv->port_stats.lro_no_desc += priv->rx_ring[i].lro.stats.no_desc;
}
}
static void
mlx4_en_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *drvinfo)
{
@ -112,7 +97,7 @@ static const char main_strings[][ETH_GSTRING_LEN] = {
"tx_heartbeat_errors", "tx_window_errors",
/* port statistics */
"lro_aggregated", "lro_flushed", "lro_no_desc", "tso_packets",
"tso_packets",
"queue_stopped", "wake_queue", "tx_timeout", "rx_alloc_failed",
"rx_csum_good", "rx_csum_none", "tx_chksum_offload",
@ -122,7 +107,7 @@ static const char main_strings[][ETH_GSTRING_LEN] = {
"tx_prio_1", "tx_prio_2", "tx_prio_3", "tx_prio_4", "tx_prio_5",
"tx_prio_6", "tx_prio_7",
};
#define NUM_MAIN_STATS 21
#define NUM_MAIN_STATS 18
#define NUM_ALL_STATS (NUM_MAIN_STATS + NUM_PORT_STATS + NUM_PKT_STATS + NUM_PERF_STATS)
static const char mlx4_en_test_names[][ETH_GSTRING_LEN]= {
@ -174,8 +159,6 @@ static void mlx4_en_get_ethtool_stats(struct net_device *dev,
spin_lock_bh(&priv->stats_lock);
mlx4_en_update_lro_stats(priv);
for (i = 0; i < NUM_MAIN_STATS; i++)
data[index++] = ((unsigned long *) &priv->stats)[i];
for (i = 0; i < NUM_PORT_STATS; i++)
@ -439,40 +422,6 @@ static void mlx4_en_get_ringparam(struct net_device *dev,
param->tx_pending = priv->tx_ring[0].size;
}
static int mlx4_ethtool_op_set_flags(struct net_device *dev, u32 data)
{
struct mlx4_en_priv *priv = netdev_priv(dev);
struct mlx4_en_dev *mdev = priv->mdev;
int rc = 0;
int changed = 0;
if (data & ~ETH_FLAG_LRO)
return -EOPNOTSUPP;
if (data & ETH_FLAG_LRO) {
if (!(dev->features & NETIF_F_LRO))
changed = 1;
} else if (dev->features & NETIF_F_LRO) {
changed = 1;
}
if (changed) {
if (netif_running(dev)) {
mutex_lock(&mdev->state_lock);
mlx4_en_stop_port(dev);
}
dev->features ^= NETIF_F_LRO;
if (netif_running(dev)) {
rc = mlx4_en_start_port(dev);
if (rc)
en_err(priv, "Failed to restart port\n");
mutex_unlock(&mdev->state_lock);
}
}
return rc;
}
const struct ethtool_ops mlx4_en_ethtool_ops = {
.get_drvinfo = mlx4_en_get_drvinfo,
.get_settings = mlx4_en_get_settings,
@ -502,7 +451,6 @@ const struct ethtool_ops mlx4_en_ethtool_ops = {
.get_ringparam = mlx4_en_get_ringparam,
.set_ringparam = mlx4_en_set_ringparam,
.get_flags = ethtool_op_get_flags,
.set_flags = mlx4_ethtool_op_set_flags,
};

2
drivers/net/mlx4/en_netdev.c
View File

@ -1047,7 +1047,7 @@ int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
dev->features |= NETIF_F_HW_VLAN_TX |
NETIF_F_HW_VLAN_RX |
NETIF_F_HW_VLAN_FILTER;
dev->features |= NETIF_F_LRO;
dev->features |= NETIF_F_GRO;
if (mdev->LSO_support) {
dev->features |= NETIF_F_TSO;
dev->features |= NETIF_F_TSO6;

66
drivers/net/mlx4/en_rx.c
View File

@ -42,18 +42,6 @@
#include "mlx4_en.h"
static int mlx4_en_get_frag_header(struct skb_frag_struct *frags, void **mac_hdr,
void **ip_hdr, void **tcpudp_hdr,
u64 *hdr_flags, void *priv)
{
*mac_hdr = page_address(frags->page) + frags->page_offset;
*ip_hdr = *mac_hdr + ETH_HLEN;
*tcpudp_hdr = (struct tcphdr *)(*ip_hdr + sizeof(struct iphdr));
*hdr_flags = LRO_IPV4 | LRO_TCP;
return 0;
}
static int mlx4_en_alloc_frag(struct mlx4_en_priv *priv,
struct mlx4_en_rx_desc *rx_desc,
struct skb_frag_struct *skb_frags,
@ -312,24 +300,6 @@ int mlx4_en_create_rx_ring(struct mlx4_en_priv *priv,
}
ring->buf = ring->wqres.buf.direct.buf;
/* Configure lro mngr */
memset(&ring->lro, 0, sizeof(struct net_lro_mgr));
ring->lro.dev = priv->dev;
ring->lro.features = LRO_F_NAPI;
ring->lro.frag_align_pad = NET_IP_ALIGN;
ring->lro.ip_summed = CHECKSUM_UNNECESSARY;
ring->lro.ip_summed_aggr = CHECKSUM_UNNECESSARY;
ring->lro.max_desc = MLX4_EN_MAX_LRO_DESCRIPTORS;
ring->lro.max_aggr = MAX_SKB_FRAGS;
ring->lro.lro_arr = kcalloc(MLX4_EN_MAX_LRO_DESCRIPTORS,
sizeof(struct net_lro_desc),
GFP_KERNEL);
if (!ring->lro.lro_arr) {
en_err(priv, "Failed to allocate lro array\n");
goto err_map;
}
ring->lro.get_frag_header = mlx4_en_get_frag_header;
return 0;
err_map:
@ -412,7 +382,6 @@ void mlx4_en_destroy_rx_ring(struct mlx4_en_priv *priv,
{
struct mlx4_en_dev *mdev = priv->mdev;
kfree(ring->lro.lro_arr);
mlx4_en_unmap_buffer(&ring->wqres.buf);
mlx4_free_hwq_res(mdev->dev, &ring->wqres, ring->buf_size + TXBB_SIZE);
vfree(ring->rx_info);
@ -563,7 +532,6 @@ int mlx4_en_process_rx_cq(struct net_device *dev, struct mlx4_en_cq *cq, int bud
struct mlx4_cqe *cqe;
struct mlx4_en_rx_ring *ring = &priv->rx_ring[cq->ring];
struct skb_frag_struct *skb_frags;
struct skb_frag_struct lro_frags[MLX4_EN_MAX_RX_FRAGS];
struct mlx4_en_rx_desc *rx_desc;
struct sk_buff *skb;
int index;
@ -623,37 +591,33 @@ int mlx4_en_process_rx_cq(struct net_device *dev, struct mlx4_en_cq *cq, int bud
* - TCP/IP (v4)
* - without IP options
* - not an IP fragment */
if (mlx4_en_can_lro(cqe->status) &&
dev->features & NETIF_F_LRO) {
if (dev->features & NETIF_F_GRO) {
struct sk_buff *gro_skb = napi_get_frags(&cq->napi);
nr = mlx4_en_complete_rx_desc(
priv, rx_desc,
skb_frags, lro_frags,
skb_frags, skb_shinfo(gro_skb)->frags,
ring->page_alloc, length);
if (!nr)
goto next;
skb_shinfo(gro_skb)->nr_frags = nr;
gro_skb->len = length;
gro_skb->data_len = length;
gro_skb->truesize += length;
gro_skb->ip_summed = CHECKSUM_UNNECESSARY;
if (priv->vlgrp && (cqe->vlan_my_qpn &
cpu_to_be32(MLX4_CQE_VLAN_PRESENT_MASK))) {
lro_vlan_hwaccel_receive_frags(
&ring->lro, lro_frags,
length, length,
priv->vlgrp,
be16_to_cpu(cqe->sl_vid),
NULL, 0);
} else
lro_receive_frags(&ring->lro,
lro_frags,
length,
length,
NULL, 0);
cpu_to_be32(MLX4_CQE_VLAN_PRESENT_MASK)))
vlan_gro_frags(&cq->napi, priv->vlgrp, be16_to_cpu(cqe->sl_vid));
else
napi_gro_frags(&cq->napi);
goto next;
}
/* LRO not possible, complete processing here */
ip_summed = CHECKSUM_UNNECESSARY;
INC_PERF_COUNTER(priv->pstats.lro_misses);
} else {
ip_summed = CHECKSUM_NONE;
priv->port_stats.rx_chksum_none++;
@ -694,14 +658,10 @@ next:
if (++polled == budget) {
/* We are here because we reached the NAPI budget -
* flush only pending LRO sessions */
lro_flush_all(&ring->lro);
goto out;
}
}
/* If CQ is empty flush all LRO sessions unconditionally */
lro_flush_all(&ring->lro);
out:
AVG_PERF_COUNTER(priv->pstats.rx_coal_avg, polled);
mlx4_cq_set_ci(&cq->mcq);

1
drivers/net/mlx4/en_tx.c
View File

@ -38,6 +38,7 @@
#include <linux/skbuff.h>
#include <linux/if_vlan.h>
#include <linux/vmalloc.h>
#include <linux/tcp.h>
#include "mlx4_en.h"

5
drivers/net/mlx4/mlx4_en.h
View File

@ -38,7 +38,6 @@
#include <linux/list.h>
#include <linux/mutex.h>
#include <linux/netdevice.h>
#include <linux/inet_lro.h>
#include <linux/mlx4/device.h>
#include <linux/mlx4/qp.h>
@ -254,7 +253,6 @@ struct mlx4_en_rx_desc {
struct mlx4_en_rx_ring {
struct mlx4_hwq_resources wqres;
struct mlx4_en_rx_alloc page_alloc[MLX4_EN_MAX_RX_FRAGS];
struct net_lro_mgr lro;
u32 size ; /* number of Rx descs*/
u32 actual_size;
u32 size_mask;
@ -379,9 +377,6 @@ struct mlx4_en_pkt_stats {
};
struct mlx4_en_port_stats {
unsigned long lro_aggregated;
unsigned long lro_flushed;
unsigned long lro_no_desc;
unsigned long tso_packets;
unsigned long queue_stopped;
unsigned long wake_queue;