Re: [Qemu-devel] [PATCH v2] linux-user: Add support for SIOCETHTOOL ioctl

2019-08-23 Thread Laurent Vivier 
Le 17/08/2019 à 02:07, Shu-Chun Weng via Qemu-devel a écrit :
> The ioctl numeric values are platform-independent and determined by
> the file include/uapi/linux/sockios.h in Linux kernel source code:
> 
>   #define SIOCETHTOOL   0x8946
> 
> These ioctls get (or set) the field ifr_data of type char* in the
> structure ifreq. Such functionality is achieved in QEMU by using
> MK_STRUCT() and MK_PTR() macros with an appropriate argument, as
> it was done for existing similar cases.

I think it's a little bit more complicated...

According to kernel code in dev_ethtool(), ifr_data points to 32bit
value which is a sub-command (ETHTOOL_*), so this value must be
converted to the good endianness.

Then this sub-command can have parameters and thus these parameters must
be converted too.

Thanks,
Laurent

Re: [Qemu-devel] [PATCH v2] linux-user: Add support for SIOCETHTOOL ioctl

2019-08-16 Thread no-reply 
Patchew URL: https://patchew.org/QEMU/20190817000714.142802-1-...@google.com/



Hi,

This series seems to have some coding style problems. See output below for
more information:

Type: series
Subject: [Qemu-devel] [PATCH v2] linux-user: Add support for SIOCETHTOOL ioctl
Message-id: 20190817000714.142802-1-...@google.com

=== TEST SCRIPT BEGIN ===
#!/bin/bash
git rev-parse base > /dev/null || exit 0
git config --local diff.renamelimit 0
git config --local diff.renames True
git config --local diff.algorithm histogram
./scripts/checkpatch.pl --mailback base..
=== TEST SCRIPT END ===

Updating 3c8cf5a9c21ff8782164d1def7f44bd888713384
From https://github.com/patchew-project/qemu
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[Qemu-devel] [PATCH v2] linux-user: Add support for SIOCETHTOOL ioctl

2019-08-16 Thread Shu-Chun Weng via Qemu-devel 
The ioctl numeric values are platform-independent and determined by
the file include/uapi/linux/sockios.h in Linux kernel source code:

  #define SIOCETHTOOL   0x8946

These ioctls get (or set) the field ifr_data of type char* in the
structure ifreq. Such functionality is achieved in QEMU by using
MK_STRUCT() and MK_PTR() macros with an appropriate argument, as
it was done for existing similar cases.

Signed-off-by: Shu-Chun Weng 
---
 linux-user/ioctls.h   | 1 +
 linux-user/syscall_defs.h | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/linux-user/ioctls.h b/linux-user/ioctls.h
index 3281c97ca2..9d231df665 100644
--- a/linux-user/ioctls.h
+++ b/linux-user/ioctls.h
@@ -208,6 +208,7 @@
   IOCTL(SIOCGIFINDEX, IOC_W | IOC_R, MK_PTR(MK_STRUCT(STRUCT_int_ifreq)))
   IOCTL(SIOCSIFPFLAGS, IOC_W, MK_PTR(MK_STRUCT(STRUCT_short_ifreq)))
   IOCTL(SIOCGIFPFLAGS, IOC_W | IOC_R, MK_PTR(MK_STRUCT(STRUCT_short_ifreq)))
+  IOCTL(SIOCETHTOOL, IOC_R | IOC_W, MK_PTR(MK_STRUCT(STRUCT_ptr_ifreq)))
   IOCTL(SIOCSIFLINK, 0, TYPE_NULL)
   IOCTL_SPECIAL(SIOCGIFCONF, IOC_W | IOC_R, do_ioctl_ifconf,
 MK_PTR(MK_STRUCT(STRUCT_ifconf)))
diff --git a/linux-user/syscall_defs.h b/linux-user/syscall_defs.h
index 0662270300..276f96039f 100644
--- a/linux-user/syscall_defs.h
+++ b/linux-user/syscall_defs.h
@@ -819,6 +819,8 @@ struct target_pollfd {
 #define TARGET_SIOCGIFTXQLEN   0x8942  /* Get the tx queue length  
*/
 #define TARGET_SIOCSIFTXQLEN   0x8943  /* Set the tx queue length  
*/
 
+#define TARGET_SIOCETHTOOL 0x8946  /* Ethtool interface
*/
+
 /* ARP cache control calls. */
 #define TARGET_OLD_SIOCDARP0x8950  /* old delete ARP table entry   
*/
 #define TARGET_OLD_SIOCGARP0x8951  /* old get ARP table entry  
*/
-- 
2.23.0.rc1.153.gdeed80330f-goog