linux.git/drivers/net/Kconfig, branch v4.0

ipvlan: Fix text that talks about ip util support

2015-02-20T21:35:44+00:00

ipvlan was added into 3.19 release and iproute2 added support
for the same in iproute2-3.19 package.

Signed-off-by: Mahesh Bandewar 
CC: Stephen Hemminger 
Signed-off-by: David S. Miller

rcu: Make SRCU optional by using CONFIG_SRCU

2015-01-06T19:04:29+00:00

SRCU is not necessary to be compiled by default in all cases. For tinification
efforts not compiling SRCU unless necessary is desirable.

The current patch tries to make compiling SRCU optional by introducing a new
Kconfig option CONFIG_SRCU which is selected when any of the components making
use of SRCU are selected.

If we do not select CONFIG_SRCU, srcu.o will not be compiled at all.

   text    data     bss     dec     hex filename
   2007       0       0    2007     7d7 kernel/rcu/srcu.o

Size of arch/powerpc/boot/zImage changes from

   text    data     bss     dec     hex filename
 831552   64180   23944  919676   e087c arch/powerpc/boot/zImage : before
 829504   64180   23952  917636   e0084 arch/powerpc/boot/zImage : after

so the savings are about ~2000 bytes.

Signed-off-by: Pranith Kumar 
CC: Paul E. McKenney 
CC: Josh Triplett 
CC: Lai Jiangshan 
Signed-off-by: Paul E. McKenney 
[ paulmck: resolve conflict due to removal of arch/ia64/kvm/Kconfig. ]

ipvlan: ipvlan depends on INET and IPV6

2014-11-30T04:53:05+00:00

This driver uses ip_out_local() and ip6_route_output() which are
defined only if CONFIG_INET and CONFIG_IPV6 are enabled respectively.

Reported-by: Jim Davis 
Signed-off-by: Mahesh Bandewar 
Signed-off-by: David S. Miller

ipvlan: Initial check-in of the IPVLAN driver.

2014-11-24T20:29:18+00:00

This driver is very similar to the macvlan driver except that it
uses L3 on the frame to determine the logical interface while
functioning as packet dispatcher. It inherits L2 of the master
device hence the packets on wire will have the same L2 for all
the packets originating from all virtual devices off of the same
master device.

This driver was developed keeping the namespace use-case in
mind. Hence most of the examples given here take that as the
base setup where main-device belongs to the default-ns and
virtual devices are assigned to the additional namespaces.

The device operates in two different modes and the difference
in these two modes in primarily in the TX side.

(a) L2 mode : In this mode, the device behaves as a L2 device.
TX processing upto L2 happens on the stack of the virtual device
associated with (namespace). Packets are switched after that
into the main device (default-ns) and queued for xmit.

RX processing is simple and all multicast, broadcast (if
applicable), and unicast belonging to the address(es) are
delivered to the virtual devices.

(b) L3 mode : In this mode, the device behaves like a L3 device.
TX processing upto L3 happens on the stack of the virtual device
associated with (namespace). Packets are switched to the
main-device (default-ns) for the L2 processing. Hence the routing
table of the default-ns will be used in this mode.

RX processins is somewhat similar to the L2 mode except that in
this mode only Unicast packets are delivered to the virtual device
while main-dev will handle all other packets.

The devices can be added using the "ip" command from the iproute2
package -

	ip link add link   type ipvlan mode [ l2 | l3 ]

Signed-off-by: Mahesh Bandewar 
Cc: Eric Dumazet 
Cc: Maciej Żenczykowski 
Cc: Laurent Chavey 
Cc: Tim Hockin 
Cc: Brandon Philips 
Cc: Pavel Emelianov 
Signed-off-by: David S. Miller

drivers/net: macvtap and tun depend on INET

2014-10-31T03:50:26+00:00

These drivers now call ipv6_proxy_select_ident(), which is defined
only if CONFIG_INET is enabled.  However, they have really depended
on CONFIG_INET for as long as they have allowed sending GSO packets
from userland.

Reported-by: kbuild test robot 
Signed-off-by: Ben Hutchings 
Fixes: f43798c27684 ("tun: Allow GSO using virtio_net_hdr")
Fixes: b9fb9ee07e67 ("macvtap: add GSO/csum offload support")
Fixes: 5188cd44c55d ("drivers/net, ipv6: Select IPv6 fragment idents for virtio UFO packets")
Signed-off-by: David S. Miller

openvswitch: fix a compilation error when CONFIG_INET is not setW!

2014-10-07T04:10:49+00:00

Fix a openvswitch compilation error when CONFIG_INET is not set:

=====================================================
   In file included from include/net/geneve.h:4:0,
                       from net/openvswitch/flow_netlink.c:45:
		          include/net/udp_tunnel.h: In function 'udp_tunnel_handle_offloads':
			  >> include/net/udp_tunnel.h:100:2: error: implicit declaration of function 'iptunnel_handle_offloads' [-Werror=implicit-function-declaration]
			  >>      return iptunnel_handle_offloads(skb, udp_csum, type);
			  >>           ^
			  >>           >> include/net/udp_tunnel.h:100:2: warning: return makes pointer from integer without a cast
			  >>           >>    cc1: some warnings being treated as errors

=====================================================

Reported-by: kbuild test robot 
Signed-off-by: Andy Zhou 
Signed-off-by: David S. Miller

vxlan: Call udp_sock_create

2014-07-14T23:12:15+00:00

In vxlan driver call common function udp_sock_create to create the
listener UDP port.

Signed-off-by: Tom Herbert 
Signed-off-by: David S. Miller

netpoll: Remove dead packet receive code (CONFIG_NETPOLL_TRAP)

2014-03-17T19:48:12+00:00

The netpoll packet receive code only becomes active if the netpoll
rx_skb_hook is implemented, and there is not a single implementation
of the netpoll rx_skb_hook in the kernel.

All of the out of tree implementations I have found all call
netpoll_poll which was removed from the kernel in 2011, so this
change should not add any additional breakage.

There are problems with the netpoll packet receive code.  __netpoll_rx
does not call dev_kfree_skb_irq or dev_kfree_skb_any in hard irq
context.  netpoll_neigh_reply leaks every skb it receives.  Reception
of packets does not work successfully on stacked devices (aka bonding,
team, bridge, and vlans).

Given that the netpoll packet receive code is buggy, there are no
out of tree users that will be merged soon, and the code has
not been used for in tree for a decade let's just remove it.

Reverting this commit can server as a starting point for anyone
who wants to resurrect netpoll packet reception support.

Acked-by: Eric Dumazet 
Signed-off-by: "Eric W. Biederman" 
Signed-off-by: David S. Miller

net: fix macvtap type name in Kconfig

2014-02-13T20:48:31+00:00

The netlink kind (and iproute2 type option) is actually called
'macvtap', not 'macvlan'.

Signed-off-by: Jan Luebbe 
Signed-off-by: David S. Miller

virtio-net: fix build error when CONFIG_AVERAGE is not enabled

2014-01-18T02:58:38+00:00

Commit ab7db91705e9 ("virtio-net: auto-tune mergeable rx buffer size for
improved performance") introduced a virtio-net dependency on EWMA.
The inclusion of EWMA is controlled by CONFIG_AVERAGE. Fix build error
when CONFIG_AVERAGE is not enabled by adding select AVERAGE to
virtio-net's Kconfig entry.

Build failure reported using config make ARCH=s390 defconfig.

Signed-off-by: Michael Dalton 
Acked-by: Jason Wang 
Signed-off-by: David S. Miller