* [PATCH net-next v4] udp:allow UDP cmsghdrs through io_uring
@ 2020-12-16 18:03 Victor Stewart
2020-12-16 18:03 ` Victor Stewart
0 siblings, 1 reply; 5+ messages in thread
From: Victor Stewart @ 2020-12-16 18:03 UTC (permalink / raw)
To: io-uring, soheil, netdev
This patch adds PROTO_CMSG_DATA_ONLY to inet_dgram_ops and inet6_dgram_ops so that UDP_SEGMENT (GSO) and UDP_GRO can be used through io_uring.
GSO and GRO are vital to bring QUIC servers on par with TCP throughputs, and together offer a higher
throughput gain than io_uring alone (rate of data transit
considering), thus io_uring is presently the lesser performance choice.
RE http://vger.kernel.org/lpc_net2018_talks/willemdebruijn-lpc2018-udpgso-paper-DRAFT-1.pdf,
GSO is about +~63% and GRO +~82%.
this patch closes that loophole.
net/ipv4/af_inet.c | 1 +
net/ipv6/af_inet6.c | 1 +
net/socket.c | 8 +++++---
3 files changed, 7 insertions(+), 3 deletions(-)
^ permalink raw reply [flat|nested] 5+ messages in thread
* [PATCH net-next v4] udp:allow UDP cmsghdrs through io_uring
2020-12-16 18:03 [PATCH net-next v4] udp:allow UDP cmsghdrs through io_uring Victor Stewart
@ 2020-12-16 18:03 ` Victor Stewart
2020-12-16 23:12 ` kernel test robot
0 siblings, 1 reply; 5+ messages in thread
From: Victor Stewart @ 2020-12-16 18:03 UTC (permalink / raw)
To: io-uring, soheil, netdev; +Cc: Victor Stewart
Signed-off-by: Victor Stewart <[email protected]>
---
net/ipv4/af_inet.c | 1 +
net/ipv6/af_inet6.c | 1 +
net/socket.c | 8 +++++---
3 files changed, 7 insertions(+), 3 deletions(-)
diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index b7260c8cef2e..c9fd5e7cfd6e 100644
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -1052,6 +1052,7 @@ EXPORT_SYMBOL(inet_stream_ops);
const struct proto_ops inet_dgram_ops = {
.family = PF_INET,
+ .flags = PROTO_CMSG_DATA_ONLY,
.owner = THIS_MODULE,
.release = inet_release,
.bind = inet_bind,
diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
index e648fbebb167..560f45009d06 100644
--- a/net/ipv6/af_inet6.c
+++ b/net/ipv6/af_inet6.c
@@ -695,6 +695,7 @@ const struct proto_ops inet6_stream_ops = {
const struct proto_ops inet6_dgram_ops = {
.family = PF_INET6,
+ .flags = PROTO_CMSG_DATA_ONLY,
.owner = THIS_MODULE,
.release = inet6_release,
.bind = inet6_bind,
diff --git a/net/socket.c b/net/socket.c
index 6e6cccc2104f..6995835d6355 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -2416,9 +2416,11 @@ static int ___sys_sendmsg(struct socket *sock, struct user_msghdr __user *msg,
long __sys_sendmsg_sock(struct socket *sock, struct msghdr *msg,
unsigned int flags)
{
- /* disallow ancillary data requests from this path */
- if (msg->msg_control || msg->msg_controllen)
- return -EINVAL;
+ if (msg->msg_control || msg->msg_controllen) {
+ /* disallow ancillary data reqs unless cmsg is plain data */
+ if (!(sock->ops->flags & PROTO_CMSG_DATA_ONLY))
+ return -EINVAL;
+ }
return ____sys_sendmsg(sock, msg, flags, NULL, 0);
}
--
2.26.2
^ permalink raw reply related [flat|nested] 5+ messages in thread
* Re: [PATCH net-next v4] udp:allow UDP cmsghdrs through io_uring
2020-12-16 18:03 ` Victor Stewart
@ 2020-12-16 23:12 ` kernel test robot
2020-12-16 23:29 ` Victor Stewart
0 siblings, 1 reply; 5+ messages in thread
From: kernel test robot @ 2020-12-16 23:12 UTC (permalink / raw)
To: Victor Stewart, io-uring, soheil, netdev
Cc: kbuild-all, clang-built-linux, Victor Stewart
[-- Attachment #1: Type: text/plain, Size: 2055 bytes --]
Hi Victor,
Thank you for the patch! Yet something to improve:
[auto build test ERROR on net-next/master]
url: https://github.com/0day-ci/linux/commits/Victor-Stewart/udp-allow-UDP-cmsghdrs-through-io_uring/20201217-020451
base: https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git 3db1a3fa98808aa90f95ec3e0fa2fc7abf28f5c9
config: riscv-randconfig-r031-20201216 (attached as .config)
compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 71601d2ac9954cb59c443cb3ae442cb106df35d4)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# install riscv cross compiling tool for clang build
# apt-get install binutils-riscv64-linux-gnu
# https://github.com/0day-ci/linux/commit/6cce2a0155c3ee2a1550cb3d5e434cc85f055a60
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Victor-Stewart/udp-allow-UDP-cmsghdrs-through-io_uring/20201217-020451
git checkout 6cce2a0155c3ee2a1550cb3d5e434cc85f055a60
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=riscv
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <[email protected]>
All errors (new ones prefixed by >>):
/tmp/leds-blinkm-655475.s: Assembler messages:
>> /tmp/leds-blinkm-655475.s:590: Error: unrecognized opcode `zext.b s7,a0'
>> /tmp/leds-blinkm-655475.s:614: Error: unrecognized opcode `zext.b a0,a0'
>> /tmp/leds-blinkm-655475.s:667: Error: unrecognized opcode `zext.b a2,s2'
/tmp/leds-blinkm-655475.s:750: Error: unrecognized opcode `zext.b a2,s2'
/tmp/leds-blinkm-655475.s:833: Error: unrecognized opcode `zext.b a2,s2'
clang-12: error: assembler command failed with exit code 1 (use -v to see invocation)
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/[email protected]
[-- Attachment #2: .config.gz --]
[-- Type: application/gzip, Size: 32876 bytes --]
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH net-next v4] udp:allow UDP cmsghdrs through io_uring
2020-12-16 23:12 ` kernel test robot
@ 2020-12-16 23:29 ` Victor Stewart
2020-12-17 15:50 ` Jens Axboe
0 siblings, 1 reply; 5+ messages in thread
From: Victor Stewart @ 2020-12-16 23:29 UTC (permalink / raw)
To: io-uring, Soheil Hassas Yeganeh, netdev, Jann Horn
what's to be done about this kernel test robot output, if anything?
On Wed, Dec 16, 2020 at 11:12 PM kernel test robot <[email protected]> wrote:
>
> Hi Victor,
>
> Thank you for the patch! Yet something to improve:
>
> [auto build test ERROR on net-next/master]
>
> url: https://github.com/0day-ci/linux/commits/Victor-Stewart/udp-allow-UDP-cmsghdrs-through-io_uring/20201217-020451
> base: https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git 3db1a3fa98808aa90f95ec3e0fa2fc7abf28f5c9
> config: riscv-randconfig-r031-20201216 (attached as .config)
> compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 71601d2ac9954cb59c443cb3ae442cb106df35d4)
> reproduce (this is a W=1 build):
> wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
> chmod +x ~/bin/make.cross
> # install riscv cross compiling tool for clang build
> # apt-get install binutils-riscv64-linux-gnu
> # https://github.com/0day-ci/linux/commit/6cce2a0155c3ee2a1550cb3d5e434cc85f055a60
> git remote add linux-review https://github.com/0day-ci/linux
> git fetch --no-tags linux-review Victor-Stewart/udp-allow-UDP-cmsghdrs-through-io_uring/20201217-020451
> git checkout 6cce2a0155c3ee2a1550cb3d5e434cc85f055a60
> # save the attached .config to linux build tree
> COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=riscv
>
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <[email protected]>
>
> All errors (new ones prefixed by >>):
>
> /tmp/leds-blinkm-655475.s: Assembler messages:
> >> /tmp/leds-blinkm-655475.s:590: Error: unrecognized opcode `zext.b s7,a0'
> >> /tmp/leds-blinkm-655475.s:614: Error: unrecognized opcode `zext.b a0,a0'
> >> /tmp/leds-blinkm-655475.s:667: Error: unrecognized opcode `zext.b a2,s2'
> /tmp/leds-blinkm-655475.s:750: Error: unrecognized opcode `zext.b a2,s2'
> /tmp/leds-blinkm-655475.s:833: Error: unrecognized opcode `zext.b a2,s2'
> clang-12: error: assembler command failed with exit code 1 (use -v to see invocation)
>
> ---
> 0-DAY CI Kernel Test Service, Intel Corporation
> https://lists.01.org/hyperkitty/list/[email protected]
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH net-next v4] udp:allow UDP cmsghdrs through io_uring
2020-12-16 23:29 ` Victor Stewart
@ 2020-12-17 15:50 ` Jens Axboe
0 siblings, 0 replies; 5+ messages in thread
From: Jens Axboe @ 2020-12-17 15:50 UTC (permalink / raw)
To: Victor Stewart, io-uring, Soheil Hassas Yeganeh, netdev,
Jann Horn
On 12/16/20 4:29 PM, Victor Stewart wrote:
> what's to be done about this kernel test robot output, if anything?
Nothing I think, doesn't look related to your change at all.
--
Jens Axboe
^ permalink raw reply [flat|nested] 5+ messages in thread
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2020-12-16 18:03 [PATCH net-next v4] udp:allow UDP cmsghdrs through io_uring Victor Stewart
2020-12-16 18:03 ` Victor Stewart
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2020-12-16 23:29 ` Victor Stewart
2020-12-17 15:50 ` Jens Axboe
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