Commit 3619eb85 authored by Sebastian Hesselbarth's avatar Sebastian Hesselbarth Committed by David S. Miller

net: mv643xx_eth: remove deprecated inet_lro support

With recent support for GRO, there is no need to keep both LRO and
GRO. This patch therefore removes the deprecated inet_lro support
from mv643xx_eth. This is work is based on an experimental patch
provided by Eric Dumazet and Willy Tarreau.
Signed-off-by: default avatarSebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Based-on-patch-by: default avatarEric Dumazet <eric.dumazet@gmail.com>
Based-on-patch-by: default avatarWilly Tarreau <w@1wt.eu>
Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 6706c82e
......@@ -21,7 +21,6 @@ if NET_VENDOR_MARVELL
config MV643XX_ETH
tristate "Marvell Discovery (643XX) and Orion ethernet support"
depends on (MV64X60 || PPC32 || PLAT_ORION) && INET
select INET_LRO
select PHYLIB
select MVMDIO
---help---
......
......@@ -56,8 +56,8 @@
#include <linux/phy.h>
#include <linux/mv643xx_eth.h>
#include <linux/io.h>
#include <linux/interrupt.h>
#include <linux/types.h>
#include <linux/inet_lro.h>
#include <linux/slab.h>
#include <linux/clk.h>
......@@ -316,12 +316,6 @@ struct mib_counters {
u32 rx_overrun;
};
struct lro_counters {
u32 lro_aggregated;
u32 lro_flushed;
u32 lro_no_desc;
};
struct rx_queue {
int index;
......@@ -335,9 +329,6 @@ struct rx_queue {
dma_addr_t rx_desc_dma;
int rx_desc_area_size;
struct sk_buff **rx_skb;
struct net_lro_mgr lro_mgr;
struct net_lro_desc lro_arr[8];
};
struct tx_queue {
......@@ -373,8 +364,6 @@ struct mv643xx_eth_private {
spinlock_t mib_counters_lock;
struct mib_counters mib_counters;
struct lro_counters lro_counters;
struct work_struct tx_timeout_task;
struct napi_struct napi;
......@@ -503,42 +492,12 @@ static void txq_maybe_wake(struct tx_queue *txq)
}
}
/* rx napi ******************************************************************/
static int
mv643xx_get_skb_header(struct sk_buff *skb, void **iphdr, void **tcph,
u64 *hdr_flags, void *priv)
{
unsigned long cmd_sts = (unsigned long)priv;
/*
* Make sure that this packet is Ethernet II, is not VLAN
* tagged, is IPv4, has a valid IP header, and is TCP.
*/
if ((cmd_sts & (RX_IP_HDR_OK | RX_PKT_IS_IPV4 |
RX_PKT_IS_ETHERNETV2 | RX_PKT_LAYER4_TYPE_MASK |
RX_PKT_IS_VLAN_TAGGED)) !=
(RX_IP_HDR_OK | RX_PKT_IS_IPV4 |
RX_PKT_IS_ETHERNETV2 | RX_PKT_LAYER4_TYPE_TCP_IPV4))
return -1;
skb_reset_network_header(skb);
skb_set_transport_header(skb, ip_hdrlen(skb));
*iphdr = ip_hdr(skb);
*tcph = tcp_hdr(skb);
*hdr_flags = LRO_IPV4 | LRO_TCP;
return 0;
}
static int rxq_process(struct rx_queue *rxq, int budget)
{
struct mv643xx_eth_private *mp = rxq_to_mp(rxq);
struct net_device_stats *stats = &mp->dev->stats;
int lro_flush_needed;
int rx;
lro_flush_needed = 0;
rx = 0;
while (rx < budget && rxq->rx_desc_count) {
struct rx_desc *rx_desc;
......@@ -599,12 +558,7 @@ static int rxq_process(struct rx_queue *rxq, int budget)
skb->ip_summed = CHECKSUM_UNNECESSARY;
skb->protocol = eth_type_trans(skb, mp->dev);
if (skb->dev->features & NETIF_F_LRO &&
skb->ip_summed == CHECKSUM_UNNECESSARY) {
lro_receive_skb(&rxq->lro_mgr, skb, (void *)cmd_sts);
lro_flush_needed = 1;
} else
napi_gro_receive(&mp->napi, skb);
napi_gro_receive(&mp->napi, skb);
continue;
......@@ -624,9 +578,6 @@ static int rxq_process(struct rx_queue *rxq, int budget)
dev_kfree_skb(skb);
}
if (lro_flush_needed)
lro_flush_all(&rxq->lro_mgr);
if (rx < budget)
mp->work_rx &= ~(1 << rxq->index);
......@@ -1118,26 +1069,6 @@ static struct net_device_stats *mv643xx_eth_get_stats(struct net_device *dev)
return stats;
}
static void mv643xx_eth_grab_lro_stats(struct mv643xx_eth_private *mp)
{
u32 lro_aggregated = 0;
u32 lro_flushed = 0;
u32 lro_no_desc = 0;
int i;
for (i = 0; i < mp->rxq_count; i++) {
struct rx_queue *rxq = mp->rxq + i;
lro_aggregated += rxq->lro_mgr.stats.aggregated;
lro_flushed += rxq->lro_mgr.stats.flushed;
lro_no_desc += rxq->lro_mgr.stats.no_desc;
}
mp->lro_counters.lro_aggregated = lro_aggregated;
mp->lro_counters.lro_flushed = lro_flushed;
mp->lro_counters.lro_no_desc = lro_no_desc;
}
static inline u32 mib_read(struct mv643xx_eth_private *mp, int offset)
{
return rdl(mp, MIB_COUNTERS(mp->port_num) + offset);
......@@ -1301,10 +1232,6 @@ struct mv643xx_eth_stats {
{ #m, FIELD_SIZEOF(struct mib_counters, m), \
-1, offsetof(struct mv643xx_eth_private, mib_counters.m) }
#define LROSTAT(m) \
{ #m, FIELD_SIZEOF(struct lro_counters, m), \
-1, offsetof(struct mv643xx_eth_private, lro_counters.m) }
static const struct mv643xx_eth_stats mv643xx_eth_stats[] = {
SSTAT(rx_packets),
SSTAT(tx_packets),
......@@ -1346,9 +1273,6 @@ static const struct mv643xx_eth_stats mv643xx_eth_stats[] = {
MIBSTAT(late_collision),
MIBSTAT(rx_discard),
MIBSTAT(rx_overrun),
LROSTAT(lro_aggregated),
LROSTAT(lro_flushed),
LROSTAT(lro_no_desc),
};
static int
......@@ -1578,7 +1502,6 @@ static void mv643xx_eth_get_ethtool_stats(struct net_device *dev,
mv643xx_eth_get_stats(dev);
mib_counters_update(mp);
mv643xx_eth_grab_lro_stats(mp);
for (i = 0; i < ARRAY_SIZE(mv643xx_eth_stats); i++) {
const struct mv643xx_eth_stats *stat;
......@@ -1851,19 +1774,6 @@ static int rxq_init(struct mv643xx_eth_private *mp, int index)
nexti * sizeof(struct rx_desc);
}
rxq->lro_mgr.dev = mp->dev;
memset(&rxq->lro_mgr.stats, 0, sizeof(rxq->lro_mgr.stats));
rxq->lro_mgr.features = LRO_F_NAPI;
rxq->lro_mgr.ip_summed = CHECKSUM_UNNECESSARY;
rxq->lro_mgr.ip_summed_aggr = CHECKSUM_UNNECESSARY;
rxq->lro_mgr.max_desc = ARRAY_SIZE(rxq->lro_arr);
rxq->lro_mgr.max_aggr = 32;
rxq->lro_mgr.frag_align_pad = 0;
rxq->lro_mgr.lro_arr = rxq->lro_arr;
rxq->lro_mgr.get_skb_header = mv643xx_get_skb_header;
memset(&rxq->lro_arr, 0, sizeof(rxq->lro_arr));
return 0;
......@@ -2851,8 +2761,7 @@ static int mv643xx_eth_probe(struct platform_device *pdev)
dev->watchdog_timeo = 2 * HZ;
dev->base_addr = 0;
dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM |
NETIF_F_RXCSUM | NETIF_F_LRO;
dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_RXCSUM;
dev->features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_RXCSUM;
dev->vlan_features = NETIF_F_SG | NETIF_F_IP_CSUM;
......
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