diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/e1000/e1000.h | 3 | ||||
| -rw-r--r-- | drivers/net/e1000/e1000_main.c | 119 |
2 files changed, 46 insertions, 76 deletions
diff --git a/drivers/net/e1000/e1000.h b/drivers/net/e1000/e1000.h index 27c77306193..99baf0e099f 100644 --- a/drivers/net/e1000/e1000.h +++ b/drivers/net/e1000/e1000.h @@ -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; diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c index 31e332935e5..5b7d0f425af 100644 --- a/drivers/net/e1000/e1000_main.c +++ b/drivers/net/e1000/e1000_main.c @@ -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 @@ setup_rx_desc_die: 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 */ |