netdev - Re: [PATCH net-next 09/10] bnx2x: Added FW GRO bridging support

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Date:	Tue, 15 Jan 2013 07:07:47 -0800
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Yuval Mintz <yuvalmin@...adcom.com>
Cc:	davem@...emloft.net, netdev@...r.kernel.org, eilong@...adcom.com,
	ariele@...adcom.com
Subject: Re: [PATCH net-next 09/10] bnx2x: Added FW GRO bridging support

On Tue, 2013-01-15 at 16:02 +0200, Yuval Mintz wrote:
> >>> bnx2x not setting gso_segs means that qdisc accounting on ingress is
> >>> completely wrong.
> >>
> >> Notice this behaviour was not introduced in this patch -
> >>
> >>	...
> >>
> >> We could either:
> >>   1. Continue with this patch, later sending a patch correcting gso_segs,
> >>      as this is not a new issue.
> >>   2. Send a V2 patch-series which will also set gso_segs correctly.
> > 
> > I am fine with any solution, as long as we fix the problem.
> 
> Eric - Thanks.
> Just to be certain - gso_segs should hold the number of non-aggregated packets
> contained in the skb's frags, right?

Thats right

If the FW doesnt provide the info, you could for example do :

shinfo->gso_segs = DIV_ROUND_UP(skb->len - hdr_len, shinfo->gso_size);

(hdr_len being the length of all headers (ethernet+network+TCP))



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