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authorJesse Gross <jesse@nicira.com>2013-09-05 12:17:05 -0700
committerDavid S. Miller <davem@davemloft.net>2013-09-05 15:54:37 -0400
commit0d40f75bdab241868c0eb6f97aef9f8b3a66f7b3 (patch)
tree45b6907b65ab9d68e76150440c571c3bc30dcece /net/openvswitch/flow.h
parent06c54055bebf919249aa1eb68312887c3cfe77b4 (diff)
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openvswitch: Fix alignment of struct sw_flow_key.
sw_flow_key alignment was declared as " __aligned(__alignof__(long))". However, this breaks on the m68k architecture where long is 32 bit in size but 16 bit aligned by default. This aligns to the size of a long to ensure that we can always do comparsions in full long-sized chunks. It also adds an additional build check to catch any reduction in alignment. CC: Andy Zhou <azhou@nicira.com> Reported-by: Fengguang Wu <fengguang.wu@intel.com> Reported-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Jesse Gross <jesse@nicira.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/openvswitch/flow.h')
-rw-r--r--net/openvswitch/flow.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/openvswitch/flow.h b/net/openvswitch/flow.h
index b65f885ac3dc..212fbf7510c4 100644
--- a/net/openvswitch/flow.h
+++ b/net/openvswitch/flow.h
@@ -125,7 +125,7 @@ struct sw_flow_key {
} nd;
} ipv6;
};
-} __aligned(__alignof__(long));
+} __aligned(BITS_PER_LONG/8); /* Ensure that we can do comparisons as longs. */
struct sw_flow {
struct rcu_head rcu;