diff options
| -rw-r--r-- | drivers/net/igb/igb_main.c | 60 |
1 files changed, 23 insertions, 37 deletions
diff --git a/drivers/net/igb/igb_main.c b/drivers/net/igb/igb_main.c index 24e502df088..dfca8217c5e 100644 --- a/drivers/net/igb/igb_main.c +++ b/drivers/net/igb/igb_main.c @@ -2230,8 +2230,6 @@ static void igb_setup_rctl(struct igb_adapter *adapter) { struct e1000_hw *hw = &adapter->hw; u32 rctl; - u32 srrctl = 0; - int i; rctl = rd32(E1000_RCTL); @@ -2256,31 +2254,8 @@ static void igb_setup_rctl(struct igb_adapter *adapter) /* enable LPE to prevent packets larger than max_frame_size */ rctl |= E1000_RCTL_LPE; - /* 82575 and greater support packet-split where the protocol - * header is placed in skb->data and the packet data is - * placed in pages hanging off of skb_shinfo(skb)->nr_frags. - * In the case of a non-split, skb->data is linearly filled, - * followed by the page buffers. Therefore, skb->data is - * sized to hold the largest protocol header. - */ - /* allocations using alloc_page take too long for regular MTU - * so only enable packet split for jumbo frames */ - if (adapter->rx_buffer_len < IGB_RXBUFFER_1024) { - srrctl = ALIGN(adapter->rx_buffer_len, 64) << - E1000_SRRCTL_BSIZEHDRSIZE_SHIFT; -#if (PAGE_SIZE / 2) > IGB_RXBUFFER_16384 - srrctl |= IGB_RXBUFFER_16384 >> - E1000_SRRCTL_BSIZEPKT_SHIFT; -#else - srrctl |= (PAGE_SIZE / 2) >> - E1000_SRRCTL_BSIZEPKT_SHIFT; -#endif - srrctl |= E1000_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS; - } else { - srrctl = ALIGN(adapter->rx_buffer_len, 1024) >> - E1000_SRRCTL_BSIZEPKT_SHIFT; - srrctl |= E1000_SRRCTL_DESCTYPE_ADV_ONEBUF; - } + /* disable queue 0 to prevent tail write w/o re-config */ + wr32(E1000_RXDCTL(0), 0); /* Attention!!! For SR-IOV PF driver operations you must enable * queue drop for all VF and PF queues to prevent head of line blocking @@ -2291,10 +2266,6 @@ static void igb_setup_rctl(struct igb_adapter *adapter) /* set all queue drop enable bits */ wr32(E1000_QDE, ALL_QUEUES); - srrctl |= E1000_SRRCTL_DROP_EN; - - /* disable queue 0 to prevent tail write w/o re-config */ - wr32(E1000_RXDCTL(0), 0); vmolr = rd32(E1000_VMOLR(adapter->vfs_allocated_count)); if (rctl & E1000_RCTL_LPE) @@ -2304,11 +2275,6 @@ static void igb_setup_rctl(struct igb_adapter *adapter) wr32(E1000_VMOLR(adapter->vfs_allocated_count), vmolr); } - for (i = 0; i < adapter->num_rx_queues; i++) { - int j = adapter->rx_ring[i].reg_idx; - wr32(E1000_SRRCTL(j), srrctl); - } - wr32(E1000_RCTL, rctl); } @@ -2373,7 +2339,7 @@ static void igb_configure_rx_ring(struct igb_adapter *adapter, struct e1000_hw *hw = &adapter->hw; u64 rdba = ring->dma; int reg_idx = ring->reg_idx; - u32 rxdctl; + u32 srrctl, rxdctl; /* disable the queue */ rxdctl = rd32(E1000_RXDCTL(reg_idx)); @@ -2393,6 +2359,26 @@ static void igb_configure_rx_ring(struct igb_adapter *adapter, writel(0, hw->hw_addr + ring->head); writel(0, hw->hw_addr + ring->tail); + /* set descriptor configuration */ + if (adapter->rx_buffer_len < IGB_RXBUFFER_1024) { + srrctl = ALIGN(adapter->rx_buffer_len, 64) << + E1000_SRRCTL_BSIZEHDRSIZE_SHIFT; +#if (PAGE_SIZE / 2) > IGB_RXBUFFER_16384 + srrctl |= IGB_RXBUFFER_16384 >> + E1000_SRRCTL_BSIZEPKT_SHIFT; +#else + srrctl |= (PAGE_SIZE / 2) >> + E1000_SRRCTL_BSIZEPKT_SHIFT; +#endif + srrctl |= E1000_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS; + } else { + srrctl = ALIGN(adapter->rx_buffer_len, 1024) >> + E1000_SRRCTL_BSIZEPKT_SHIFT; + srrctl |= E1000_SRRCTL_DESCTYPE_ADV_ONEBUF; + } + + wr32(E1000_SRRCTL(reg_idx), srrctl); + /* enable receive descriptor fetching */ rxdctl = rd32(E1000_RXDCTL(reg_idx)); rxdctl |= E1000_RXDCTL_QUEUE_ENABLE; |