diff options
Diffstat (limited to 'drivers/net/igb/igb_main.c')
| -rw-r--r-- | drivers/net/igb/igb_main.c | 41 |
1 files changed, 22 insertions, 19 deletions
diff --git a/drivers/net/igb/igb_main.c b/drivers/net/igb/igb_main.c index ff16b7ac0d1..04e860d4e08 100644 --- a/drivers/net/igb/igb_main.c +++ b/drivers/net/igb/igb_main.c @@ -443,6 +443,7 @@ static int igb_alloc_queues(struct igb_adapter *adapter) ring->count = adapter->rx_ring_count; ring->queue_index = i; ring->pdev = adapter->pdev; + ring->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE; } igb_cache_ring_register(adapter); @@ -1863,7 +1864,6 @@ static int __devinit igb_sw_init(struct igb_adapter *adapter) adapter->tx_ring_count = IGB_DEFAULT_TXD; adapter->rx_ring_count = IGB_DEFAULT_RXD; - adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE; adapter->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN; adapter->min_frame_size = ETH_ZLEN + ETH_FCS_LEN; @@ -2358,8 +2358,8 @@ static void igb_configure_rx_ring(struct igb_adapter *adapter, writel(0, ring->tail); /* set descriptor configuration */ - if (adapter->rx_buffer_len < IGB_RXBUFFER_1024) { - srrctl = ALIGN(adapter->rx_buffer_len, 64) << + if (ring->rx_buffer_len < IGB_RXBUFFER_1024) { + srrctl = ALIGN(ring->rx_buffer_len, 64) << E1000_SRRCTL_BSIZEHDRSIZE_SHIFT; #if (PAGE_SIZE / 2) > IGB_RXBUFFER_16384 srrctl |= IGB_RXBUFFER_16384 >> @@ -2370,7 +2370,7 @@ static void igb_configure_rx_ring(struct igb_adapter *adapter, #endif srrctl |= E1000_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS; } else { - srrctl = ALIGN(adapter->rx_buffer_len, 1024) >> + srrctl = ALIGN(ring->rx_buffer_len, 1024) >> E1000_SRRCTL_BSIZEPKT_SHIFT; srrctl |= E1000_SRRCTL_DESCTYPE_ADV_ONEBUF; } @@ -2619,7 +2619,6 @@ static void igb_free_all_rx_resources(struct igb_adapter *adapter) **/ static void igb_clean_rx_ring(struct igb_ring *rx_ring) { - struct igb_adapter *adapter = rx_ring->q_vector->adapter; struct igb_buffer *buffer_info; unsigned long size; unsigned int i; @@ -2632,7 +2631,7 @@ static void igb_clean_rx_ring(struct igb_ring *rx_ring) if (buffer_info->dma) { pci_unmap_single(rx_ring->pdev, buffer_info->dma, - adapter->rx_buffer_len, + rx_ring->rx_buffer_len, PCI_DMA_FROMDEVICE); buffer_info->dma = 0; } @@ -3746,6 +3745,7 @@ static int igb_change_mtu(struct net_device *netdev, int new_mtu) { struct igb_adapter *adapter = netdev_priv(netdev); int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN; + u32 rx_buffer_len, i; if ((max_frame < ETH_ZLEN + ETH_FCS_LEN) || (max_frame > MAX_JUMBO_FRAME_SIZE)) { @@ -3763,9 +3763,6 @@ static int igb_change_mtu(struct net_device *netdev, int new_mtu) /* igb_down has a dependency on max_frame_size */ adapter->max_frame_size = max_frame; - if (netif_running(netdev)) - igb_down(adapter); - /* NOTE: netdev_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. @@ -3773,16 +3770,22 @@ static int igb_change_mtu(struct net_device *netdev, int new_mtu) */ if (max_frame <= IGB_RXBUFFER_1024) - adapter->rx_buffer_len = IGB_RXBUFFER_1024; + rx_buffer_len = IGB_RXBUFFER_1024; else if (max_frame <= MAXIMUM_ETHERNET_VLAN_SIZE) - adapter->rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE; + rx_buffer_len = MAXIMUM_ETHERNET_VLAN_SIZE; else - adapter->rx_buffer_len = IGB_RXBUFFER_128; + rx_buffer_len = IGB_RXBUFFER_128; + + if (netif_running(netdev)) + igb_down(adapter); dev_info(&adapter->pdev->dev, "changing MTU from %d to %d\n", netdev->mtu, new_mtu); netdev->mtu = new_mtu; + for (i = 0; i < adapter->num_rx_queues; i++) + adapter->rx_ring[i].rx_buffer_len = rx_buffer_len; + if (netif_running(netdev)) igb_up(adapter); else @@ -4828,7 +4831,7 @@ static inline void igb_rx_checksum_adv(struct igb_adapter *adapter, dev_dbg(&adapter->pdev->dev, "cksum success: bits %08X\n", status_err); } -static inline u16 igb_get_hlen(struct igb_adapter *adapter, +static inline u16 igb_get_hlen(struct igb_ring *rx_ring, union e1000_adv_rx_desc *rx_desc) { /* HW will not DMA in data larger than the given buffer, even if it @@ -4837,8 +4840,8 @@ static inline u16 igb_get_hlen(struct igb_adapter *adapter, */ u16 hlen = (le16_to_cpu(rx_desc->wb.lower.lo_dword.hdr_info) & E1000_RXDADV_HDRBUFLEN_MASK) >> E1000_RXDADV_HDRBUFLEN_SHIFT; - if (hlen > adapter->rx_buffer_len) - hlen = adapter->rx_buffer_len; + if (hlen > rx_ring->rx_buffer_len) + hlen = rx_ring->rx_buffer_len; return hlen; } @@ -4888,14 +4891,14 @@ static bool igb_clean_rx_irq_adv(struct igb_q_vector *q_vector, if (buffer_info->dma) { pci_unmap_single(pdev, buffer_info->dma, - adapter->rx_buffer_len, + rx_ring->rx_buffer_len, PCI_DMA_FROMDEVICE); buffer_info->dma = 0; - if (adapter->rx_buffer_len >= IGB_RXBUFFER_1024) { + if (rx_ring->rx_buffer_len >= IGB_RXBUFFER_1024) { skb_put(skb, length); goto send_up; } - skb_put(skb, igb_get_hlen(adapter, rx_desc)); + skb_put(skb, igb_get_hlen(rx_ring, rx_desc)); } if (length) { @@ -5034,7 +5037,7 @@ static void igb_alloc_rx_buffers_adv(struct igb_ring *rx_ring, i = rx_ring->next_to_use; buffer_info = &rx_ring->buffer_info[i]; - bufsz = adapter->rx_buffer_len; + bufsz = rx_ring->rx_buffer_len; while (cleaned_count--) { rx_desc = E1000_RX_DESC_ADV(*rx_ring, i); |