diff options
Diffstat (limited to 'drivers/net')
-rw-r--r-- | drivers/net/sky2.c | 59 |
1 files changed, 28 insertions, 31 deletions
diff --git a/drivers/net/sky2.c b/drivers/net/sky2.c index 1aa1f3316702..478288b8bc21 100644 --- a/drivers/net/sky2.c +++ b/drivers/net/sky2.c | |||
@@ -2484,6 +2484,32 @@ static inline void sky2_rx_done(struct sky2_hw *hw, unsigned port, | |||
2484 | } | 2484 | } |
2485 | } | 2485 | } |
2486 | 2486 | ||
2487 | static void sky2_rx_checksum(struct sky2_port *sky2, u32 status) | ||
2488 | { | ||
2489 | /* If this happens then driver assuming wrong format for chip type */ | ||
2490 | BUG_ON(sky2->hw->flags & SKY2_HW_NEW_LE); | ||
2491 | |||
2492 | /* Both checksum counters are programmed to start at | ||
2493 | * the same offset, so unless there is a problem they | ||
2494 | * should match. This failure is an early indication that | ||
2495 | * hardware receive checksumming won't work. | ||
2496 | */ | ||
2497 | if (likely((u16)(status >> 16) == (u16)status)) { | ||
2498 | struct sk_buff *skb = sky2->rx_ring[sky2->rx_next].skb; | ||
2499 | skb->ip_summed = CHECKSUM_COMPLETE; | ||
2500 | skb->csum = le16_to_cpu(status); | ||
2501 | } else { | ||
2502 | dev_notice(&sky2->hw->pdev->dev, | ||
2503 | "%s: receive checksum problem (status = %#x)\n", | ||
2504 | sky2->netdev->name, status); | ||
2505 | |||
2506 | /* Disable checksum offload */ | ||
2507 | sky2->flags &= ~SKY2_FLAG_RX_CHECKSUM; | ||
2508 | sky2_write32(sky2->hw, Q_ADDR(rxqaddr[sky2->port], Q_CSR), | ||
2509 | BMU_DIS_RX_CHKSUM); | ||
2510 | } | ||
2511 | } | ||
2512 | |||
2487 | /* Process status response ring */ | 2513 | /* Process status response ring */ |
2488 | static int sky2_status_intr(struct sky2_hw *hw, int to_do, u16 idx) | 2514 | static int sky2_status_intr(struct sky2_hw *hw, int to_do, u16 idx) |
2489 | { | 2515 | { |
@@ -2552,37 +2578,8 @@ static int sky2_status_intr(struct sky2_hw *hw, int to_do, u16 idx) | |||
2552 | /* fall through */ | 2578 | /* fall through */ |
2553 | #endif | 2579 | #endif |
2554 | case OP_RXCHKS: | 2580 | case OP_RXCHKS: |
2555 | if (!(sky2->flags & SKY2_FLAG_RX_CHECKSUM)) | 2581 | if (likely(sky2->flags & SKY2_FLAG_RX_CHECKSUM)) |
2556 | break; | 2582 | sky2_rx_checksum(sky2, status); |
2557 | |||
2558 | /* If this happens then driver assuming wrong format */ | ||
2559 | if (unlikely(hw->flags & SKY2_HW_NEW_LE)) { | ||
2560 | if (net_ratelimit()) | ||
2561 | printk(KERN_NOTICE "%s: unexpected" | ||
2562 | " checksum status\n", | ||
2563 | dev->name); | ||
2564 | break; | ||
2565 | } | ||
2566 | |||
2567 | /* Both checksum counters are programmed to start at | ||
2568 | * the same offset, so unless there is a problem they | ||
2569 | * should match. This failure is an early indication that | ||
2570 | * hardware receive checksumming won't work. | ||
2571 | */ | ||
2572 | if (likely(status >> 16 == (status & 0xffff))) { | ||
2573 | skb = sky2->rx_ring[sky2->rx_next].skb; | ||
2574 | skb->ip_summed = CHECKSUM_COMPLETE; | ||
2575 | skb->csum = le16_to_cpu(status); | ||
2576 | } else { | ||
2577 | printk(KERN_NOTICE PFX "%s: hardware receive " | ||
2578 | "checksum problem (status = %#x)\n", | ||
2579 | dev->name, status); | ||
2580 | sky2->flags &= ~SKY2_FLAG_RX_CHECKSUM; | ||
2581 | |||
2582 | sky2_write32(sky2->hw, | ||
2583 | Q_ADDR(rxqaddr[port], Q_CSR), | ||
2584 | BMU_DIS_RX_CHKSUM); | ||
2585 | } | ||
2586 | break; | 2583 | break; |
2587 | 2584 | ||
2588 | case OP_TXINDEXLE: | 2585 | case OP_TXINDEXLE: |