From 9c434f5e2181097e1d22d9b3e381ca6d693e5188 Mon Sep 17 00:00:00 2001 From: James K Lewis Date: Fri, 17 Nov 2006 14:39:36 -0800 Subject: [PATCH] Spidernet: remove ETH_ZLEN check in earlier patch In an earlier patch, code was added to pad packets that were less that ETH_ZLEN (60) bytes using the skb_pad function. This has caused hangs when accessing certain NFS mounted file systems. This patch removes the check and solves the NFS problem. The driver, with this patch, has been tested extensively. Please apply. Signed-off-by: James K Lewis Cc: Stephen Hemminger Cc: Jeff Garzik Signed-off-by: Andrew Morton Signed-off-by: Jeff Garzik --- drivers/net/spider_net.c | 18 +++++------------- 1 file changed, 5 insertions(+), 13 deletions(-) (limited to 'drivers/net/spider_net.c') diff --git a/drivers/net/spider_net.c b/drivers/net/spider_net.c index 418138dd6c68..9dd282346e1c 100644 --- a/drivers/net/spider_net.c +++ b/drivers/net/spider_net.c @@ -644,20 +644,12 @@ spider_net_prepare_tx_descr(struct spider_net_card *card, struct spider_net_descr *descr; dma_addr_t buf; unsigned long flags; - int length; - length = skb->len; - if (length < ETH_ZLEN) { - if (skb_pad(skb, ETH_ZLEN-length)) - return 0; - length = ETH_ZLEN; - } - - buf = pci_map_single(card->pdev, skb->data, length, PCI_DMA_TODEVICE); + buf = pci_map_single(card->pdev, skb->data, skb->len, PCI_DMA_TODEVICE); if (pci_dma_mapping_error(buf)) { if (netif_msg_tx_err(card) && net_ratelimit()) pr_err("could not iommu-map packet (%p, %i). " - "Dropping packet\n", skb->data, length); + "Dropping packet\n", skb->data, skb->len); card->spider_stats.tx_iommu_map_error++; return -ENOMEM; } @@ -667,7 +659,7 @@ spider_net_prepare_tx_descr(struct spider_net_card *card, card->tx_chain.head = descr->next; descr->buf_addr = buf; - descr->buf_size = length; + descr->buf_size = skb->len; descr->next_descr_addr = 0; descr->skb = skb; descr->data_status = 0; @@ -802,8 +794,8 @@ spider_net_release_tx_chain(struct spider_net_card *card, int brutal) /* unmap the skb */ if (skb) { - int len = skb->len < ETH_ZLEN ? ETH_ZLEN : skb->len; - pci_unmap_single(card->pdev, buf_addr, len, PCI_DMA_TODEVICE); + pci_unmap_single(card->pdev, buf_addr, skb->len, + PCI_DMA_TODEVICE); dev_kfree_skb(skb); } } -- cgit v1.2.3