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| /openbmc/linux/include/linux/ |
| H A D | if_macvlan.h | diff 8ffab51b3dfc54876f145f15b351c41f3f703195 Wed Nov 10 15:14:04 CST 2010 Eric Dumazet <eric.dumazet@gmail.com> macvlan: lockless tx path
macvlan is a stacked device, like tunnels. We should use the lockless
mechanism we are using in tunnels and loopback.
This patch completely removes locking in TX path.
tx stat counters are added into existing percpu stat structure, renamed
from rx_stats to pcpu_stats.
Note : this reverts commit 2c11455321f37 (macvlan: add multiqueue
capability)
Note : rx_errors converted to a 32bit counter, like tx_dropped, since
they dont need 64bit range.
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Patrick McHardy <kaber@trash.net>
Cc: Ben Greear <greearb@candelatech.com>
Cc: Ben Hutchings <bhutchings@solarflare.com>
Acked-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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| /openbmc/linux/drivers/net/ |
| H A D | macvlan.c | diff 797f87f83b60685ff8a13fa0572d2f10393c50d3 Thu Dec 26 05:17:00 CST 2013 Florian Westphal <fw@strlen.de> macvlan: fix netdev feature propagation from lower device
There are inconsistencies wrt. feature propagation/inheritance between
macvlan and the underlying interface.
When a feature is turned off on the real device before a macvlan is
created on top, these will remain enabled on the macvlan device, whereas
turning off the feature on the lower device after macvlan creation the
kernel will propagate the changes to the macvlan.
The second issue is that, when propagating changes from underlying device
to the macvlan interface, macvlan can erronously lose its NETIF_F_LLTX flag,
as features are anded with the underlying device.
However, LLTX should be kept since it has no dependencies on physical
hardware (LLTX is set on macvlan creation regardless of the lower
device properties, see 8ffab51b3dfc54876f145f15b351c41f3f703195
(macvlan: lockless tx path).
The LLTX flag is now forced regardless of user settings in absence of
layer2 hw acceleration (a6cc0cfa72e0b6d9f2c8fd858aa,
net: Add layer 2 hardware acceleration operations for macvlan devices).
Use netdev_increment_features to rebuild the feature set on capability
changes on either the lower device or on the macvlan interface.
As pointed out by Ben Hutchings, use netdev_update_features on
NETDEV_FEAT_CHANGE event (it calls macvlan_fix_features/netdev_features_change
if needed).
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff 8ffab51b3dfc54876f145f15b351c41f3f703195 Wed Nov 10 15:14:04 CST 2010 Eric Dumazet <eric.dumazet@gmail.com> macvlan: lockless tx path
macvlan is a stacked device, like tunnels. We should use the lockless
mechanism we are using in tunnels and loopback.
This patch completely removes locking in TX path.
tx stat counters are added into existing percpu stat structure, renamed
from rx_stats to pcpu_stats.
Note : this reverts commit 2c11455321f37 (macvlan: add multiqueue
capability)
Note : rx_errors converted to a 32bit counter, like tx_dropped, since
they dont need 64bit range.
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Patrick McHardy <kaber@trash.net>
Cc: Ben Greear <greearb@candelatech.com>
Cc: Ben Hutchings <bhutchings@solarflare.com>
Acked-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
| H A D | macvtap.c | diff cd3e22b75c01fe1e075d91504b29019a05d8d373 Mon Nov 25 03:19:04 CST 2013 Jason Wang <jasowang@redhat.com> macvtap: fix tx_dropped counting error
After commit 8ffab51b3dfc54876f145f15b351c41f3f703195
(macvlan: lockless tx path), tx stat counter were converted to percpu stat
structure. So we need use to this also for tx_dropped in macvtap. Otherwise, the
management won't notice the dropping packet in macvtap tx path.
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Vlad Yasevich <vyasevic@redhat.com>
Cc: Eric Dumazet <edumazet@google.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Vlad Yasevich <vyasevic@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|