linux-toradex.git/include/uapi/linux/if.h, branch v4.11-rc6

uapi: fix linux/if.h userspace compilation errors

2017-02-22T21:09:04+00:00

Include  (guarded by ifndef __KERNEL__) to fix
the following linux/if.h userspace compilation errors:

/usr/include/linux/if.h:234:19: error: field 'ifru_addr' has incomplete type
   struct sockaddr ifru_addr;
/usr/include/linux/if.h:235:19: error: field 'ifru_dstaddr' has incomplete type
   struct sockaddr ifru_dstaddr;
/usr/include/linux/if.h:236:19: error: field 'ifru_broadaddr' has incomplete type
   struct sockaddr ifru_broadaddr;
/usr/include/linux/if.h:237:19: error: field 'ifru_netmask' has incomplete type
   struct sockaddr ifru_netmask;
/usr/include/linux/if.h:238:20: error: field 'ifru_hwaddr' has incomplete type
   struct  sockaddr ifru_hwaddr;

This also fixes userspace compilation of the following uapi headers:
  linux/atmbr2684.h
  linux/gsmmux.h
  linux/if_arp.h
  linux/if_bonding.h
  linux/if_frad.h
  linux/if_pppox.h
  linux/if_tunnel.h
  linux/netdevice.h
  linux/route.h
  linux/wireless.h

As no uapi header provides a definition of struct sockaddr, inclusion
of  seems to be the most conservative and the only safe
fix available.

All current users of  are very likely to be including
 already because the latter is the sole provider
of struct sockaddr definition in libc, so adding a uapi header
with a definition of struct sockaddr would create a potential
conflict with .

Replacing struct sockaddr in the definition of struct ifreq with
a different type would create a potential incompatibility with current
users of struct ifreq who might rely on ifru_addr et al members being
of type struct sockaddr.

Signed-off-by: Dmitry V. Levin 
Signed-off-by: David S. Miller

uapi glibc compat: fix outer guard of net device flags enum

2016-12-06T15:43:32+00:00

Fix a wrong condition preventing the higher net device flags
IFF_LOWER_UP etc to be defined if net/if.h is included before
linux/if.h.

The comment makes it clear the intention was to allow partial
definition with either parts.

This fixes compilation of userspace programs trying to use
IFF_LOWER_UP, IFF_DORMANT or IFF_ECHO.

Fixes: 4a91cb61bb99 ("uapi glibc compat: fix compile errors when glibc net/if.h included before linux/if.h")
Signed-off-by: Jonas Gorski 
Reviewed-by: Mikko Rapeli 
Signed-off-by: David S. Miller

uapi glibc compat: fix compile errors when glibc net/if.h included before linux/if.h

2016-05-10T01:29:31+00:00

glibc's net/if.h contains copies of definitions from linux/if.h and these
conflict and cause build failures if both files are included by application
source code. Changes in uapi headers, which fixed header file dependencies to
include linux/if.h when it was needed, e.g. commit 1ffad83d, made the
net/if.h and linux/if.h incompatibilities visible as build failures for
userspace applications like iproute2 and xtables-addons.

This patch fixes compile errors when glibc net/if.h is included before
linux/if.h:

./linux/if.h:99:21: error: redeclaration of enumerator ‘IFF_NOARP’
./linux/if.h:98:23: error: redeclaration of enumerator ‘IFF_RUNNING’
./linux/if.h:97:26: error: redeclaration of enumerator ‘IFF_NOTRAILERS’
./linux/if.h:96:27: error: redeclaration of enumerator ‘IFF_POINTOPOINT’
./linux/if.h:95:24: error: redeclaration of enumerator ‘IFF_LOOPBACK’
./linux/if.h:94:21: error: redeclaration of enumerator ‘IFF_DEBUG’
./linux/if.h:93:25: error: redeclaration of enumerator ‘IFF_BROADCAST’
./linux/if.h:92:19: error: redeclaration of enumerator ‘IFF_UP’
./linux/if.h:252:8: error: redefinition of ‘struct ifconf’
./linux/if.h:203:8: error: redefinition of ‘struct ifreq’
./linux/if.h:169:8: error: redefinition of ‘struct ifmap’
./linux/if.h:107:23: error: redeclaration of enumerator ‘IFF_DYNAMIC’
./linux/if.h:106:25: error: redeclaration of enumerator ‘IFF_AUTOMEDIA’
./linux/if.h:105:23: error: redeclaration of enumerator ‘IFF_PORTSEL’
./linux/if.h:104:25: error: redeclaration of enumerator ‘IFF_MULTICAST’
./linux/if.h:103:21: error: redeclaration of enumerator ‘IFF_SLAVE’
./linux/if.h:102:22: error: redeclaration of enumerator ‘IFF_MASTER’
./linux/if.h:101:24: error: redeclaration of enumerator ‘IFF_ALLMULTI’
./linux/if.h:100:23: error: redeclaration of enumerator ‘IFF_PROMISC’

The cases where linux/if.h is included before net/if.h need a similar fix in
the glibc side, or the order of include files can be changed userspace
code as a workaround.

This change was tested in x86 userspace on Debian unstable with
scripts/headers_compile_test.sh:

$ make headers_install && \
  cd usr/include && ../../scripts/headers_compile_test.sh -l -k
...
cc -Wall -c -nostdinc -I /usr/lib/gcc/i586-linux-gnu/5/include -I /usr/lib/gcc/i586-linux-gnu/5/include-fixed -I . -I /home/mcfrisk/src/linux-2.6/usr/headers_compile_test_include.2uX2zH -I /home/mcfrisk/src/linux-2.6/usr/headers_compile_test_include.2uX2zH/i586-linux-gnu -o /dev/null ./linux/if.h_libc_before_kernel.h
PASSED libc before kernel test: ./linux/if.h

Reported-by: Jan Engelhardt 
Reported-by: Josh Boyer 
Reported-by: Stephen Hemminger 
Reported-by: Waldemar Brodkorb 
Cc: Gabriel Laskar 
Signed-off-by: Mikko Rapeli 
Signed-off-by: David S. Miller

net: fix a comment typo

2016-03-18T23:40:27+00:00

Fix a comment typo.

Signed-off-by: Zhang Shengju 
Signed-off-by: David S. Miller

net: move net_device priv_flags out from UAPI

2014-02-27T20:59:09+00:00

These are private to userspace, and they're unstable
anyway and can be shuffled at will (see 080e4130b1fb)
so any userspace application relying on them is on crack.

Test compiled with allyesconfig.

mcgrof@drvbp1 /pub/mem/mcgrof/net-next (git::master)$ make allyesconfig
mcgrof@drvbp1 /pub/mem/mcgrof/net-next (git::master)$ time make -j 20
...
  BUILD   arch/x86/boot/bzImage
Setup is 16992 bytes (padded to 17408 bytes).
System is 56153 kB
CRC 721d2751
Kernel: arch/x86/boot/bzImage is ready  (#1)
real    19m35.744s
user    280m37.984s
sys     27m54.104s

Cc: netdev@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: Ben Hutchings 
Cc: Florian Fainelli 
Cc: David Miller 
Signed-off-by: Luis R. Rodriguez 
Signed-off-by: David S. Miller

net: kdoc struct net_device flags and priv_flags

2014-02-27T20:59:09+00:00

We have documentation for these flags but they're scattered
all over the place. #defines don't allow documentation to be
written easily so to help to start bringing some documentation
together use the enums kdoc practice but keep the defines to
allow userspace to be able to #ifdef them.

I've verified the same values are assigned before and after
with a simple userspace test program [0] and checksumming the
output.

[0] http://drvbp1.linux-foundation.org/~mcgrof/kdoc/netdev_flags/

mcgrof@gnat ~/tmp $ ./check-flags | sha1sum
0ec5b6b1840aa3bb9ce464e61c564820871c92c3  -

Cc: netdev@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: Ben Hutchings 
Cc: Florian Fainelli 
Cc: David Miller 
Signed-off-by: Luis R. Rodriguez 
Signed-off-by: David S. Miller

net: Add layer 2 hardware acceleration operations for macvlan devices

2013-11-08T00:11:41+00:00

Add a operations structure that allows a network interface to export
the fact that it supports package forwarding in hardware between
physical interfaces and other mac layer devices assigned to it (such
as macvlans). This operaions structure can be used by virtual mac
devices to bypass software switching so that forwarding can be done
in hardware more efficiently.

Signed-off-by: John Fastabend 
Signed-off-by: Neil Horman 
CC: Andy Gospodarek 
CC: "David S. Miller" 
Signed-off-by: David S. Miller

UAPI: (Scripted) Disintegrate include/linux

2012-10-13T09:46:48+00:00

Signed-off-by: David Howells 
Acked-by: Arnd Bergmann 
Acked-by: Thomas Gleixner 
Acked-by: Michael Kerrisk 
Acked-by: Paul E. McKenney 
Acked-by: Dave Jones