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ofp-protocol: Better abstract changing the protocol used for flow matches.

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The previous interface here required the client to understand, to some
extent, the low-level NXFF_* values and the encoding format for the
NXT_SET_FLOW_FORMAT and NXT_SET_FLOW_MOD_TABLE_ID messages.  This commit
changes the interface so that the client only has to understand the
ofputil_protocol type used elsewhere and none of the encoding otherwise.

Signed-off-by: Ben Pfaff <blp@ovn.org>
Acked-by: Justin Pettit <jpettit@ovn.org>
This commit is contained in:
Ben Pfaff
2018-02-15 14:38:28 -08:00
parent 62bba60935
commit 225c33ba64
8 changed files with 153 additions and 176 deletions
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11
include/openvswitch/ofp-protocol.h
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@@ -162,11 +162,22 @@ enum ofputil_protocol ofputil_protocols_from_string(const char *s);
const char *ofputil_version_to_string(enum ofp_version ofp_version);
uint32_t ofputil_versions_from_string(const char *s);
uint32_t ofputil_versions_from_strings(char ** const s, size_t count);
/* Messages for changing the protocol. */
/* Changing the protocol at a high level. */
struct ofpbuf *ofputil_encode_set_protocol(enum ofputil_protocol current,
enum ofputil_protocol want,
enum ofputil_protocol *next);
/* Changing the protocol at a low level. */
struct ofpbuf *ofputil_encode_nx_set_flow_format(enum ofputil_protocol);
enum ofputil_protocol ofputil_decode_nx_set_flow_format(
const struct ofp_header *);
struct ofpbuf *ofputil_encode_nx_flow_mod_table_id(bool enable);
bool ofputil_decode_nx_flow_mod_table_id(const struct ofp_header *);
#ifdef __cplusplus
}
#endif