[ovs-dev] [datapath 2/2] datapath: Shrink sw_flow_mask by 8 bytes (64-bit) or 4 bytes (32-bit).
Ben Pfaff
blp at nicira.com
Wed Nov 13 17:54:18 UTC 2013
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>
---
datapath/flow.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/datapath/flow.h b/datapath/flow.h
index fdc309f..6b68cf1 100644
--- a/datapath/flow.h
+++ b/datapath/flow.h
@@ -125,8 +125,8 @@ 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 {
--
1.7.10.4
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