[dpdk-dev,v2] net/mlx5: add ptype table idx for TCP ACK packets

  From: Bin Huang <bin.huang@hxt-semitech.com>

According to CQE format:
- l4_hdr_type:
     0 - None
     1 - TCP header was present in the packet
     2 - UDP header was present in the packet
     3 - TCP header was present in the packet with Empty
         TCP ACK indication. (TCP packet <ACK> flag is set,
         and packet carries no data)
     4 - TCP header was present in the packet with TCP ACK indication.
         (TCP packet <ACK> flag is set, and packet carries data).

A packet should be identified as TCP packet if l4_hdr_type is 1, 3 or 4.
Add corresponding idx of TCP ACK to ptype table.

previous discussion:
https://www.mail-archive.com/users@dpdk.org/msg02980.html

Signed-off-by: Bin Huang <bin.huang@hxt-semitech.com>
---
v1: initial version
v2: following review comments from Yongseok

 drivers/net/mlx5/mlx5_rxtx.c | 40 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 40 insertions(+)
  

On Fri, Mar 30, 2018 at 01:13:38PM +0800, Bin Huang wrote:
> From: Bin Huang <bin.huang@hxt-semitech.com>
> 
> According to CQE format:
> - l4_hdr_type:
>      0 - None
>      1 - TCP header was present in the packet
>      2 - UDP header was present in the packet
>      3 - TCP header was present in the packet with Empty
>          TCP ACK indication. (TCP packet <ACK> flag is set,
>          and packet carries no data)
>      4 - TCP header was present in the packet with TCP ACK indication.
>          (TCP packet <ACK> flag is set, and packet carries data).
> 
> A packet should be identified as TCP packet if l4_hdr_type is 1, 3 or 4.
> Add corresponding idx of TCP ACK to ptype table.
> 
> previous discussion:
> https://emea01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.mail-archive.com%2Fusers%40dpdk.org%2Fmsg02980.html&data=02%7C01%7Cyskoh%40mellanox.com%7Ca4f58bc587d041482c9308d595fd16f7%7Ca652971c7d2e4d9ba6a4d149256f461b%7C0%7C0%7C636579836609612796&sdata=wyfDNPG1EZQSzAyaWxfIfMnqjWZ9vdeLz1EZFzHx6Cw%3D&reserved=0
> 
> Signed-off-by: Bin Huang <bin.huang@hxt-semitech.com>
Acked-by: Yongseok Koh <yskoh@mellanox.com>

Thank you!
  

Friday, March 30, 2018 8:22 PM, Yongseok Koh:
> Subject: Re: [dpdk-dev] [PATCH v2] net/mlx5: add ptype table idx for TCP
> ACK packets
> 
> On Fri, Mar 30, 2018 at 01:13:38PM +0800, Bin Huang wrote:
> > From: Bin Huang <bin.huang@hxt-semitech.com>
> >
> > According to CQE format:
> > - l4_hdr_type:
> >      0 - None
> >      1 - TCP header was present in the packet
> >      2 - UDP header was present in the packet
> >      3 - TCP header was present in the packet with Empty
> >          TCP ACK indication. (TCP packet <ACK> flag is set,
> >          and packet carries no data)
> >      4 - TCP header was present in the packet with TCP ACK indication.
> >          (TCP packet <ACK> flag is set, and packet carries data).
> >
> > A packet should be identified as TCP packet if l4_hdr_type is 1, 3 or 4.
> > Add corresponding idx of TCP ACK to ptype table.
> >
> > previous discussion:
> >
> https://emea01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fw
> ww.mail-
> archive.com%2Fusers%40dpdk.org%2Fmsg02980.html&data=02%7C01%7Cys
> koh%40mellanox.com%7Ca4f58bc587d041482c9308d595fd16f7%7Ca652971c7
> d2e4d9ba6a4d149256f461b%7C0%7C0%7C636579836609612796&sdata=wyfD
> NPG1EZQSzAyaWxfIfMnqjWZ9vdeLz1EZFzHx6Cw%3D&reserved=0
> >
> > Signed-off-by: Bin Huang <bin.huang@hxt-semitech.com>
> Acked-by: Yongseok Koh <yskoh@mellanox.com>

Applied to next-net-mlx, thanks. 

> 
> Thank you!