On 7/28/2020 9:44 PM, Kamal Heib wrote:
On Tue, Jul 28, 2020 at 09:21:06PM +0800, Zhu Yanjun wrote:
On 7/28/2020 4:35 PM, Kamal Heib wrote:
On Thu, Jul 23, 2020 at 11:15:00PM +0800, Zhu Yanjun wrote:
On 7/23/2020 9:15 PM, Jason Gunthorpe wrote:
On Thu, Jul 23, 2020 at 09:08:39PM +0800, Zhu Yanjun wrote:
On 7/23/2020 3:25 PM, Kamal Heib wrote:
On Thu, Jul 23, 2020 at 02:58:41PM +0800, Zhu Yanjun wrote:
On 7/23/2020 1:57 PM, Kamal Heib wrote:
On Wed, Jul 22, 2020 at 10:09:04AM +0800, Zhu Yanjun wrote:
On Tue, Jul 21, 2020 at 7:28 PM Yanjun Zhu <yanjunz@xxxxxxxxxxxx> wrote:
From: Kamal Heib <kamalheib1@xxxxxxxxx>
Sent: Tuesday, July 21, 2020 6:16 PM
To: linux-rdma@xxxxxxxxxxxxxxx
Cc: Yanjun Zhu <yanjunz@xxxxxxxxxxxx>; Doug Ledford <dledford@xxxxxxxxxx>; Jason Gunthorpe <jgg@xxxxxxxx>; Kamal Heib <kamalheib1@xxxxxxxxx>
Subject: [PATCH for-next] RDMA/rxe: Remove pkey table
The RoCE spec require from RoCE devices to support only the defualt pkey, While the rxe driver maintain a 64 enties pkey table and use only the first entry. With that said remove the maintaing of the pkey table and used the default pkey when needed.
Hi Kamal
After this patch is applied, do you make tests with SoftRoCE and mlx hardware?
The SoftRoCE should work well with the mlx hardware.
Zhu Yanjun
Hi Zhu,
Yes, please see below:
$ ibv_rc_pingpong -d mlx5_0 -g 11
local address: LID 0x0000, QPN 0x0000e3, PSN 0x728a4f, GID ::ffff:172.31.40.121
Can you make tests with GSI QP?
Zhu Yanjun
Is this the GSI ?
Please check GSI in "InfiniBandTM Architecture Specification Volume 1
Release 1.3"
Then make tests with GSI again.
The followings are also removed by this commit. Not sure if it is good.
"
C9-42: If the destination QP is QP1, the BTH:P_Key shall be compared to the
set of P_Keys associated with the port on which the packet arrived. If the
P_Key matches any of the keys associated with the port, it shall be
considered valid.
"
The above is correct for ports that configured to work in InfiniBand
mode, while in RoCEv2 mode only the default P_Key should be associated
with the port (Please see below from "ANNEX A17: ROCEV2 (IP ROUTABLE
ROCE)):
"""
17.7.1 LOADING THE P_KEY TABLE
Compliance statement C17-7: on page 1193 describes requirements for
setting the P_Key table based on an assumption that the P_Key table is
set directly by a Subnet Manager. However, RoCEv2 ports do not support
InfiniBand Subnet Management. Therefore, compliance statement C17-7:
on page 1193 does not apply to RoCEv2 ports.
"
C17-7: An HCA shall require no OS involvement to set the P_Key table;
the P_Key table shall be set directly by Subnet Manager MADs.
"
In SoftRoCE, what set the P_Key table?
No one is setting the P_Key table in SoftRoCE, and no subnet manager in
the RoCE fabric.
Could you please tell me what is wrong with this patch?
Please read the mail thread again.
GSI QP number is 1. In your commits, the handle of qpn == 1 is removed.
It seems that it conflicts with IB specification.
Not sure if it is good.
Thanks,
Kamal
Methods for setting the P_Key table associated with a RoCEv2 port are
not defined in this specification, except for the requirements for a
default P_Key described elsewhere in this annex.
"""
Thanks,
Kamal
rping uses RDMA CM which goes over the GSI
Jason
