From: Zhu Yanjun <zyjzyj2000@gmail.com>
To: Bob Pearson <rpearsonhpe@gmail.com>
Cc: Xiao Yang <yangx.jy@fujitsu.com>,
RDMA mailing list <linux-rdma@vger.kernel.org>,
Leon Romanovsky <leon@kernel.org>,
Jason Gunthorpe <jgg@nvidia.com>
Subject: Re: [PATCH v2] providers/rxe: Set the correct value of resid for inline data
Date: Mon, 16 Aug 2021 11:55:38 +0800 [thread overview]
Message-ID: <CAD=hENc2gt98YyhOC=EsSTsN0=-EZ7Pz1Kht96HYNA+qvdfWyQ@mail.gmail.com> (raw)
In-Reply-To: <7279c618-d373-d7ce-c67c-97e519b48e94@gmail.com>
On Sat, Aug 14, 2021 at 6:11 AM Bob Pearson <rpearsonhpe@gmail.com> wrote:
>
> On 8/9/21 10:07 AM, Xiao Yang wrote:
> > Resid indicates the residual length of transmitted bytes but current
> > rxe sets it to zero for inline data at the beginning. In this case,
> > request will transmit zero byte to responder wrongly.
> >
> > Resid should be set to the total length of transmitted bytes at the
> > beginning.
> >
> > Note:
> > Just remove the useless setting of resid in init_send_wqe().
> >
> > Fixes: 1a894ca10105 ("Providers/rxe: Implement ibv_create_qp_ex verb")
> > Fixes: 8337db5df125 ("Providers/rxe: Implement memory windows")
> > Signed-off-by: Xiao Yang <yangx.jy@fujitsu.com>
> > ---
> > providers/rxe/rxe.c | 5 ++---
> > 1 file changed, 2 insertions(+), 3 deletions(-)
> >
> > diff --git a/providers/rxe/rxe.c b/providers/rxe/rxe.c
> > index 3c3ea8bb..3533a325 100644
> > --- a/providers/rxe/rxe.c
> > +++ b/providers/rxe/rxe.c
> > @@ -1004,7 +1004,7 @@ static void wr_set_inline_data(struct ibv_qp_ex *ibqp, void *addr,
> >
> > memcpy(wqe->dma.inline_data, addr, length);
> > wqe->dma.length = length;
> > - wqe->dma.resid = 0;
> > + wqe->dma.resid = length;
> > }
> >
> > static void wr_set_inline_data_list(struct ibv_qp_ex *ibqp, size_t num_buf,
> > @@ -1035,6 +1035,7 @@ static void wr_set_inline_data_list(struct ibv_qp_ex *ibqp, size_t num_buf,
> > }
> >
> > wqe->dma.length = tot_length;
> > + wqe->dma.resid = tot_length;
> > }
> >
> > static void wr_set_sge(struct ibv_qp_ex *ibqp, uint32_t lkey, uint64_t addr,
> > @@ -1473,8 +1474,6 @@ static int init_send_wqe(struct rxe_qp *qp, struct rxe_wq *sq,
> > if (ibwr->send_flags & IBV_SEND_INLINE) {
> > uint8_t *inline_data = wqe->dma.inline_data;
> >
> > - wqe->dma.resid = 0;
> > -
> > for (i = 0; i < num_sge; i++) {
> > memcpy(inline_data,
> > (uint8_t *)(long)ibwr->sg_list[i].addr,
> >
>
> Signed-off-by: Bob Pearson <rpearsonhpe@gmail.com>
The Signed-off-by: tag indicates that the signer was involved in the
development of the patch, or that he/she was in the patch’s delivery
path.
Zhu Yanjun
next prev parent reply other threads:[~2021-08-16 3:55 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-09 15:07 [PATCH v2] providers/rxe: Set the correct value of resid for inline data Xiao Yang
2021-08-10 3:40 ` Zhu Yanjun
2021-08-10 16:33 ` yangx.jy
2021-08-16 7:47 ` Zhu Yanjun
2021-08-17 0:54 ` yangx.jy
2021-08-23 2:44 ` Zhu Yanjun
2021-08-23 3:58 ` yangx.jy
2021-08-13 22:11 ` Bob Pearson
2021-08-16 3:55 ` Zhu Yanjun [this message]
2021-08-16 18:52 ` Bob Pearson
2021-08-23 1:33 ` yangx.jy
2021-08-25 9:44 ` Leon Romanovsky
2021-09-02 8:27 ` yangx.jy
2021-09-02 19:48 ` Bob Pearson
2021-09-03 1:39 ` yangx.jy
2021-09-03 3:34 ` Zhu Yanjun
2021-09-26 10:51 ` Leon Romanovsky
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to='CAD=hENc2gt98YyhOC=EsSTsN0=-EZ7Pz1Kht96HYNA+qvdfWyQ@mail.gmail.com' \
--to=zyjzyj2000@gmail.com \
--cc=jgg@nvidia.com \
--cc=leon@kernel.org \
--cc=linux-rdma@vger.kernel.org \
--cc=rpearsonhpe@gmail.com \
--cc=yangx.jy@fujitsu.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).