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The ldmvsw driver is specifically for supporting the ldom virtual
networking by running in the primary ldom and using the LDC to connect
the remaining ldoms to the outside world via a bridge. With TSO and GSO
supported while connected the bridge, things tend to misbehave as seen
in our case by delayed packets, enough to begin triggering retransmits
and affecting overall throughput. By turning off advertised support for
TSO and GSO we restore stable traffic flow through the bridge.
Orabug: 23293104
Signed-off-by: Shannon Nelson <shannon.nelson@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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New version and simplify the print code.
Signed-off-by: Shannon Nelson <shannon.nelson@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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cassini: min_mtu 60, max_mtu 9000
niu: min_mtu 68, max_mtu 9216
sungem: min_mtu 68, max_mtu 1500 (comments say jumbo mode is broken)
sunvnet: min_mtu 68, max_mtu 65535
- removed sunvnet_change_mut_common as it does nothing now
CC: netdev@vger.kernel.org
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Kernel source files need not include <linux/kconfig.h> explicitly
because the top Makefile forces to include it with:
-include $(srctree)/include/linux/kconfig.h
This commit removes explicit includes except the following:
* arch/s390/include/asm/facilities_src.h
* tools/testing/radix-tree/linux/kernel.h
These two are used for host programs.
Link: http://lkml.kernel.org/r/1473656164-11929-1-git-send-email-yamada.masahiro@socionext.com
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Add ldmvsw.c driver
Details:
The ldmvsw driver very closely follows the sunvnet.c code and makes
use of the sunvnet_common.c code for core functionality.
A significant difference between sunvnet and ldmvsw driver is
sunvnet creates a network interface for each vnet-port *parent*
node in the MD while the ldmvsw driver creates a network interface
for every vsw-port node in the Machine Description (MD).
Therefore the netdev_priv() for sunvnet is a vnet structure while
the netdev_priv() for ldmvsw is a vnet_port structure.
Vnet_port structures allocated by ldmvsw have the vsw bit set.
When finding the net_device associated with a port, the common code keys
off this bit to use either the net_device found in the vnet_port or the
net_device in the vnet structure (see the VNET_PORT_TO_NET_DEVICE() macro in
sunvnet_common.h). This scheme allows the common code to work with
both drivers with minimal changes.
Similar to Xen, network interfaces created by the ldmvsw driver will always
have a HW Addr (i.e. mac address) of FE:FF:FF:FF:FF:FF and each will be
assigned the devname "vif<cfg_handle>.<port_id>" - where <cfg_handle> and
<port_id> are a unique handle/port pair assigned to the associated
vsw-port node in the MD.
Signed-off-by: Aaron Young <aaron.young@oracle.com>
Signed-off-by: Rashmi Narasimhan <rashmi.narasimhan@oracle.com>
Reviewed-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Reviewed-by: Alexandre Chartre <Alexandre.Chartre@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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