netdev - Re: [PATCH net] net: bcmgenet: fix dma api length mismatch

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Date:	Fri, 18 Mar 2016 23:13:06 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	eric.dumazet@...il.com
Cc:	f.fainelli@...il.com, netdev@...r.kernel.org, opendmb@...il.com
Subject: Re: [PATCH net] net: bcmgenet: fix dma api length mismatch

From: Eric Dumazet <eric.dumazet@...il.com>
Date: Thu, 17 Mar 2016 11:57:06 -0700

> From: Eric Dumazet <edumazet@...gle.com>
> 
> When un-mapping skb->data in __bcmgenet_tx_reclaim(),
> we must use the length that was used in original dma_map_single(),
> instead of skb->len that might be bigger (includes the frags)
> 
> We simply can store skb_len into tx_cb_ptr->dma_len and use it
> at unmap time.
> 
> Fixes: 1c1008c793fa ("net: bcmgenet: add main driver file")
> Signed-off-by: Eric Dumazet <edumazet@...gle.com>

Applied and queued up for -stable, thanks.