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authorMatt Carlson <mcarlson@broadcom.com>2011-07-27 14:20:52 +0000
committerDavid S. Miller <davem@davemloft.net>2011-07-27 22:39:32 -0700
commit84b67b27e9531e9a70c9e8cd952d66c55f4d0ddb (patch)
treef082a966a82ebc803f1f4d7cfccf057b3b0a8017 /drivers/nfc
parentd1a3b7377d3b6a01ec5f70adb32173b13233aabf (diff)
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tg3: Add tx BD budgeting code
As the driver breaks large skb fragments into smaller submissions to the hardware, there is a new danger that BDs might get exhausted before all fragments have been mapped. This patch adds code to make sure tx BDs aren't oversubscribed and flag the condition if it happens. Signed-off-by: Matt Carlson <mcarlson@broadcom.com> Reviewed-by: Michael Chan <mchan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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