Re: [PATCH net 3/3] Drivers: net: hyperv: Address UDP checksum issues

From: David Miller
Date: Wed Apr 09 2014 - 14:37:17 EST


From: KY Srinivasan <kys@xxxxxxxxxxxxx>
Date: Wed, 9 Apr 2014 18:08:47 +0000

> Thanks Dave. I will COW the SKB before changing the checksum
> value. I do have a question though. I looked at a bunch of hardware
> drivers and they modify the header information, specially checksum
> field and I could not see where they had COWed the skb. I was
> grepping for skb_cow in these drivers.

Look for skb_cow_head(), for example, the tg3.c driver uses this.


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