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Commit 9f687888 authored by Jeff Kirsher's avatar Jeff Kirsher Committed by root
Browse files

e1000: Add 82573 controller support to TSO fix 




Signed-off-by: default avatarJeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: default avatarJesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: default avatarJohn Ronciak <john.ronciak@intel.com>
parent 329bfd0b

drivers/net/e1000/e1000_main.c

+19 −11
Original line number Diff line number Diff line
@@ -2796,21 +2796,29 @@ e1000_xmit_frame(struct sk_buff *skb, struct net_device *netdev) 
		max_per_txd = min(mss << 2, max_per_txd);

		max_txd_pwr = fls(max_per_txd) - 1;



	/* TSO Workaround for 82571/2 Controllers -- if skb->data

	/* TSO Workaround for 82571/2/3 Controllers -- if skb->data

	 * points to just header, pull a few bytes of payload from

	 * frags into skb->data */

		hdr_len = ((skb->h.raw - skb->data) + (skb->h.th->doff << 2));

		if (skb->data_len && (hdr_len == (skb->len - skb->data_len)) &&

			(adapter->hw.mac_type == e1000_82571 ||

			adapter->hw.mac_type == e1000_82572)) {

		if (skb->data_len && (hdr_len == (skb->len - skb->data_len))) {

			switch (adapter->hw.mac_type) {

				unsigned int pull_size;

			case e1000_82571:

			case e1000_82572:

			case e1000_82573:

				pull_size = min((unsigned int)4, skb->data_len);

				if (!__pskb_pull_tail(skb, pull_size)) {

				printk(KERN_ERR "__pskb_pull_tail failed.\n");

					printk(KERN_ERR 

						"__pskb_pull_tail failed.\n");

					dev_kfree_skb_any(skb);

					return -EFAULT;

				}

				len = skb->len - skb->data_len;

				break;

			default:

				/* do nothing */

				break;

			}

		}

	}