提交 b5b9d664 编写于 作者: J Jeff Garzik
......@@ -225,9 +225,6 @@ struct e1000_rx_ring {
struct e1000_ps_page *ps_page;
struct e1000_ps_page_dma *ps_page_dma;
struct sk_buff *rx_skb_top;
struct sk_buff *rx_skb_prev;
/* cpu for rx queue */
int cpu;
......
......@@ -103,7 +103,7 @@ static char e1000_driver_string[] = "Intel(R) PRO/1000 Network Driver";
#else
#define DRIVERNAPI "-NAPI"
#endif
#define DRV_VERSION "6.3.9-k2"DRIVERNAPI
#define DRV_VERSION "6.3.9-k4"DRIVERNAPI
char e1000_driver_version[] = DRV_VERSION;
static char e1000_copyright[] = "Copyright (c) 1999-2005 Intel Corporation.";
......@@ -1635,8 +1635,6 @@ e1000_setup_rx_resources(struct e1000_adapter *adapter,
rxdr->next_to_clean = 0;
rxdr->next_to_use = 0;
rxdr->rx_skb_top = NULL;
rxdr->rx_skb_prev = NULL;
return 0;
}
......@@ -1713,8 +1711,23 @@ e1000_setup_rctl(struct e1000_adapter *adapter)
rctl |= adapter->rx_buffer_len << 0x11;
} else {
rctl &= ~E1000_RCTL_SZ_4096;
rctl &= ~E1000_RCTL_BSEX;
rctl |= E1000_RCTL_SZ_2048;
rctl |= E1000_RCTL_BSEX;
switch (adapter->rx_buffer_len) {
case E1000_RXBUFFER_2048:
default:
rctl |= E1000_RCTL_SZ_2048;
rctl &= ~E1000_RCTL_BSEX;
break;
case E1000_RXBUFFER_4096:
rctl |= E1000_RCTL_SZ_4096;
break;
case E1000_RXBUFFER_8192:
rctl |= E1000_RCTL_SZ_8192;
break;
case E1000_RXBUFFER_16384:
rctl |= E1000_RCTL_SZ_16384;
break;
}
}
#ifndef CONFIG_E1000_DISABLE_PACKET_SPLIT
......@@ -2107,16 +2120,6 @@ e1000_clean_rx_ring(struct e1000_adapter *adapter,
}
}
/* there also may be some cached data in our adapter */
if (rx_ring->rx_skb_top) {
dev_kfree_skb(rx_ring->rx_skb_top);
/* rx_skb_prev will be wiped out by rx_skb_top */
rx_ring->rx_skb_top = NULL;
rx_ring->rx_skb_prev = NULL;
}
size = sizeof(struct e1000_buffer) * rx_ring->count;
memset(rx_ring->buffer_info, 0, size);
size = sizeof(struct e1000_ps_page) * rx_ring->count;
......@@ -3106,24 +3109,27 @@ e1000_change_mtu(struct net_device *netdev, int new_mtu)
break;
}
/* since the driver code now supports splitting a packet across
* multiple descriptors, most of the fifo related limitations on
* jumbo frame traffic have gone away.
* simply use 2k descriptors for everything.
*
* NOTE: dev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN
* means we reserve 2 more, this pushes us to allocate from the next
* larger slab size
* i.e. RXBUFFER_2048 --> size-4096 slab */
/* recent hardware supports 1KB granularity */
if (adapter->hw.mac_type > e1000_82547_rev_2) {
adapter->rx_buffer_len =
((max_frame < E1000_RXBUFFER_2048) ?
max_frame : E1000_RXBUFFER_2048);
adapter->rx_buffer_len = max_frame;
E1000_ROUNDUP(adapter->rx_buffer_len, 1024);
} else
adapter->rx_buffer_len = E1000_RXBUFFER_2048;
} else {
if(unlikely((adapter->hw.mac_type < e1000_82543) &&
(max_frame > MAXIMUM_ETHERNET_FRAME_SIZE))) {
DPRINTK(PROBE, ERR, "Jumbo Frames not supported "
"on 82542\n");
return -EINVAL;
} else {
if(max_frame <= E1000_RXBUFFER_2048)
adapter->rx_buffer_len = E1000_RXBUFFER_2048;
else if(max_frame <= E1000_RXBUFFER_4096)
adapter->rx_buffer_len = E1000_RXBUFFER_4096;
else if(max_frame <= E1000_RXBUFFER_8192)
adapter->rx_buffer_len = E1000_RXBUFFER_8192;
else if(max_frame <= E1000_RXBUFFER_16384)
adapter->rx_buffer_len = E1000_RXBUFFER_16384;
}
}
netdev->mtu = new_mtu;
......@@ -3620,7 +3626,7 @@ e1000_clean_rx_irq(struct e1000_adapter *adapter,
uint8_t last_byte;
unsigned int i;
int cleaned_count = 0;
boolean_t cleaned = FALSE, multi_descriptor = FALSE;
boolean_t cleaned = FALSE;
i = rx_ring->next_to_clean;
rx_desc = E1000_RX_DESC(*rx_ring, i);
......@@ -3652,43 +3658,12 @@ e1000_clean_rx_irq(struct e1000_adapter *adapter,
length = le16_to_cpu(rx_desc->length);
skb_put(skb, length);
if (!(status & E1000_RXD_STAT_EOP)) {
if (!rx_ring->rx_skb_top) {
rx_ring->rx_skb_top = skb;
rx_ring->rx_skb_top->len = length;
rx_ring->rx_skb_prev = skb;
} else {
if (skb_shinfo(rx_ring->rx_skb_top)->frag_list) {
rx_ring->rx_skb_prev->next = skb;
skb->prev = rx_ring->rx_skb_prev;
} else {
skb_shinfo(rx_ring->rx_skb_top)->frag_list = skb;
}
rx_ring->rx_skb_prev = skb;
rx_ring->rx_skb_top->data_len += length;
}
if (unlikely(!(status & E1000_RXD_STAT_EOP))) {
/* All receives must fit into a single buffer */
E1000_DBG("%s: Receive packet consumed multiple"
" buffers\n", netdev->name);
dev_kfree_skb_irq(skb);
goto next_desc;
} else {
if (rx_ring->rx_skb_top) {
if (skb_shinfo(rx_ring->rx_skb_top)
->frag_list) {
rx_ring->rx_skb_prev->next = skb;
skb->prev = rx_ring->rx_skb_prev;
} else
skb_shinfo(rx_ring->rx_skb_top)
->frag_list = skb;
rx_ring->rx_skb_top->data_len += length;
rx_ring->rx_skb_top->len +=
rx_ring->rx_skb_top->data_len;
skb = rx_ring->rx_skb_top;
multi_descriptor = TRUE;
rx_ring->rx_skb_top = NULL;
rx_ring->rx_skb_prev = NULL;
}
}
if (unlikely(rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK)) {
......@@ -3712,10 +3687,7 @@ e1000_clean_rx_irq(struct e1000_adapter *adapter,
* performance for small packets with large amounts
* of reassembly being done in the stack */
#define E1000_CB_LENGTH 256
if ((length < E1000_CB_LENGTH) &&
!rx_ring->rx_skb_top &&
/* or maybe (status & E1000_RXD_STAT_EOP) && */
!multi_descriptor) {
if (length < E1000_CB_LENGTH) {
struct sk_buff *new_skb =
dev_alloc_skb(length + NET_IP_ALIGN);
if (new_skb) {
......@@ -3729,7 +3701,8 @@ e1000_clean_rx_irq(struct e1000_adapter *adapter,
skb = new_skb;
skb_put(skb, length);
}
}
} else
skb_put(skb, length);
/* end copybreak code */
......
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