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ofp-util: New functions for converting protocols to and from versions.

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The values of enum ofputil_protocol have meanings that overlap with
OpenFlow version numbers.  These new functions provide ways to figure out
these overlaps.

These functions will be used for the first time in an upcoming commit.

Signed-off-by: Ben Pfaff <blp@nicira.com>
Acked-by: Simon Horman <horms@verge.net.au>
This commit is contained in:
Ben Pfaff
2012-11-28 21:41:05 -08:00
parent e71bff1bef
commit 4f13da568d
2 changed files with 55 additions and 10 deletions
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9
lib/ofp-util.h
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@@ -94,8 +94,7 @@ enum ofputil_protocol {
/* Protocols in which a specific table may be specified in flow_mods. */
#define OFPUTIL_P_TID (OFPUTIL_P_OF10_STD_TID | \
OFPUTIL_P_OF10_NXM_TID | \
OFPUTIL_P_OF12_OXM | \
OFPUTIL_P_OF13_OXM)
OFPUTIL_P_ANY_OXM)
};
/* Protocols to use for flow dumps, from most to least preferred. */
@@ -103,7 +102,8 @@ extern enum ofputil_protocol ofputil_flow_dump_protocols[];
extern size_t ofputil_n_flow_dump_protocols;
enum ofputil_protocol ofputil_protocol_from_ofp_version(enum ofp_version);
enum ofp_version ofputil_protocol_to_ofp_version(enum ofputil_protocol);
enum ofputil_protocol ofputil_protocols_from_ofp_version(enum ofp_version);
enum ofp_version ofputil_protocol_to_ofp_version(enum ofputil_protocol);
bool ofputil_protocol_is_valid(enum ofputil_protocol);
enum ofputil_protocol ofputil_protocol_set_tid(enum ofputil_protocol,
@@ -130,6 +130,9 @@ void ofputil_format_version_name(struct ds *, enum ofp_version);
void ofputil_format_version_bitmap(struct ds *msg, uint32_t bitmap);
void ofputil_format_version_bitmap_names(struct ds *msg, uint32_t bitmap);
uint32_t ofputil_protocols_to_version_bitmap(enum ofputil_protocol);
enum ofputil_protocol ofputil_protocols_from_version_bitmap(uint32_t bitmap);
/* Bitmap of OpenFlow versions that Open vSwitch supports. */
#define OFPUTIL_SUPPORTED_VERSIONS \
((1u << OFP10_VERSION) | (1u << OFP12_VERSION) | (1u << OFP13_VERSION))