Hi Shahaf,
On Mon, Dec 26, 2016 at 05:28:36PM +0200, Shahaf Shuler wrote:
> Dseg pointer is not initialised when the first segment is inlined
> causing a segmentation fault in such situation.
>
> Fixes: 2a66cf378954 ("net/mlx5: support inline send")
>
> CC: sta...@dpdk.org
> Signed-off-by: Shahaf Shuler <shah...@mellanox.com>
Thanks for fixing this bug, a few comments below.
> ---
> drivers/net/mlx5/mlx5_rxtx.c | 6 +++++-
> 1 file changed, 5 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/net/mlx5/mlx5_rxtx.c b/drivers/net/mlx5/mlx5_rxtx.c
> index 97810e8..d6688c6 100644
> --- a/drivers/net/mlx5/mlx5_rxtx.c
> +++ b/drivers/net/mlx5/mlx5_rxtx.c
> @@ -483,7 +483,7 @@
> assert(addr <= addr_end);
> }
> /*
> - * 2 DWORDs consumed by the WQE header + 1 DSEG +
> + * 2 DWORDs consumed by the WQE header + ETH segment +
> * the size of the inline part of the packet.
> */
> ds = 2 + MLX5_WQE_DS(pkt_inline_sz - 2);
> @@ -498,6 +498,10 @@
> } else if (!segs_n) {
> goto next_pkt;
> } else {
> + /* dseg will be advance as part of next_seg*/
Nit-picking here, there is a missing space in the above comment.
> + dseg = (volatile rte_v128u32_t *)
rte_v128u32_t does not exist (yet) in the tree, this patch therefore depends
on "eal: define generic vector types" [1]. Such dependencies should be
mentioned as a notes section of a patch (after a three-dash line).
Regarding sta...@dpdk.org, un case the vector types patch is not applied on
the stable branch, you'll also have to provide your own definition.
> + ((uintptr_t)wqe +
> + ((ds - 1) * MLX5_WQE_DWORD_SIZE));
> goto next_seg;
> }
> } else {
> --
> 1.8.3.1
>
Otherwise,
Acked-by: Adrien Mazarguil <adrien.mazarg...@6wind.com>
[1] http://dpdk.org/ml/archives/dev/2016-November/050261.html
--
Adrien Mazarguil
6WIND
