[ovs-dev] [PATCH net-next 02/17] openvswitch: Shrink sw_flow_mask by 8 bytes (64-bit) or 4 bytes (32-bit).
Jesse Gross
jesse at nicira.com
Tue Jan 7 00:16:01 UTC 2014
From: Ben Pfaff <blp at nicira.com>
We won't normally have a ton of flow masks but using a size_t to store
values no bigger than sizeof(struct sw_flow_key) seems excessive.
This reduces sw_flow_key_range and sw_flow_mask by 4 bytes on 32-bit
systems. On 64-bit systems it shrinks sw_flow_key_range by 12 bytes but
sw_flow_mask only by 8 bytes due to padding.
Compile tested only.
Signed-off-by: Ben Pfaff <blp at nicira.com>
Acked-by: Andy Zhou <azhou at nicira.com>
Signed-off-by: Jesse Gross <jesse at nicira.com>
---
net/openvswitch/flow.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/net/openvswitch/flow.h b/net/openvswitch/flow.h
index 1510f51..176406d 100644
--- a/net/openvswitch/flow.h
+++ b/net/openvswitch/flow.h
@@ -122,8 +122,8 @@ struct sw_flow_key {
} __aligned(BITS_PER_LONG/8); /* Ensure that we can do comparisons as longs. */
struct sw_flow_key_range {
- size_t start;
- size_t end;
+ unsigned short int start;
+ unsigned short int end;
};
struct sw_flow_mask {
--
1.8.3.2
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