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SubjectRe: [PATCH 3.4 01/12] cxgb3: Fix length calculation in write_ofld_wr() on 32-bit architectures
Hi Greg,

On Mon, Nov 18, 2013 at 10:41:34AM -0800, Greg Kroah-Hartman wrote:
> 3.4-stable review patch. If anyone has any objections, please let me know.
>

I guess you can drop this commit because, as Ben has already pointed
out, it is required for kernels >= 3.11.

Cheers,
--
Luis


> ------------------
>
> From: Ben Hutchings <ben@decadent.org.uk>
>
> [ Upstream commit 262e827fe745642589450ae241b7afd3912c3f25 ]
>
> The length calculation here is now invalid on 32-bit architectures,
> since sk_buff::tail is a pointer and sk_buff::transport_header is
> an integer offset:
>
> drivers/net/ethernet/chelsio/cxgb3/sge.c: In function 'write_ofld_wr':
> drivers/net/ethernet/chelsio/cxgb3/sge.c:1603:9: warning: passing argument 4 of 'make_sgl' makes integer from pointer without a cast [enabled by default]
> adap->pdev);
> ^
> drivers/net/ethernet/chelsio/cxgb3/sge.c:964:28: note: expected 'unsigned int' but argument is of type 'sk_buff_data_t'
> static inline unsigned int make_sgl(const struct sk_buff *skb,
> ^
>
> Use the appropriate skb accessor functions.
>
> Compile-tested only.
>
> Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
> Fixes: 1a37e412a022 ('net: Use 16bits for *_headers fields of struct skbuff')
> Signed-off-by: David S. Miller <davem@davemloft.net>
> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> ---
> drivers/net/ethernet/chelsio/cxgb3/sge.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> --- a/drivers/net/ethernet/chelsio/cxgb3/sge.c
> +++ b/drivers/net/ethernet/chelsio/cxgb3/sge.c
> @@ -1600,7 +1600,8 @@ static void write_ofld_wr(struct adapter
> flits = skb_transport_offset(skb) / 8;
> sgp = ndesc == 1 ? (struct sg_ent *)&d->flit[flits] : sgl;
> sgl_flits = make_sgl(skb, sgp, skb_transport_header(skb),
> - skb->tail - skb->transport_header,
> + skb_tail_pointer(skb) -
> + skb_transport_header(skb),
> adap->pdev);
> if (need_skb_unmap()) {
> setup_deferred_unmapping(skb, adap->pdev, sgp, sgl_flits);
>
>
> --
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