};
struct ofputil_msg_type;
-int ofputil_decode_msg_type(const struct ofp_header *,
- const struct ofputil_msg_type **);
-int ofputil_decode_msg_type_partial(const struct ofp_header *, size_t length,
+enum ofperr ofputil_decode_msg_type(const struct ofp_header *,
const struct ofputil_msg_type **);
+enum ofperr ofputil_decode_msg_type_partial(const struct ofp_header *,
+ size_t length,
+ const struct ofputil_msg_type **);
enum ofputil_msg_code ofputil_msg_type_code(const struct ofputil_msg_type *);
const char *ofputil_msg_type_name(const struct ofputil_msg_type *);
/* Port numbers. */
-int ofputil_check_output_port(uint16_t ofp_port, int max_ports);
+enum ofperr ofputil_check_output_port(uint16_t ofp_port, int max_ports);
bool ofputil_port_from_string(const char *, uint16_t *port);
void ofputil_format_port(uint16_t port, struct ds *);
size_t n_actions;
};
-int ofputil_decode_flow_mod(struct ofputil_flow_mod *,
- const struct ofp_header *, bool flow_mod_table_id);
+enum ofperr ofputil_decode_flow_mod(struct ofputil_flow_mod *,
+ const struct ofp_header *,
+ bool flow_mod_table_id);
struct ofpbuf *ofputil_encode_flow_mod(const struct ofputil_flow_mod *,
enum nx_flow_format,
bool flow_mod_table_id);
uint8_t table_id;
};
-int ofputil_decode_flow_stats_request(struct ofputil_flow_stats_request *,
- const struct ofp_header *);
+enum ofperr ofputil_decode_flow_stats_request(
+ struct ofputil_flow_stats_request *, const struct ofp_header *);
struct ofpbuf *ofputil_encode_flow_stats_request(
const struct ofputil_flow_stats_request *, enum nx_flow_format);
uint64_t byte_count; /* Byte count, UINT64_MAX if unknown. */
};
-int ofputil_decode_flow_removed(struct ofputil_flow_removed *,
- const struct ofp_header *);
+enum ofperr ofputil_decode_flow_removed(struct ofputil_flow_removed *,
+ const struct ofp_header *);
struct ofpbuf *ofputil_encode_flow_removed(const struct ofputil_flow_removed *,
enum nx_flow_format);
((LEFT) -= ntohs((ITER)->header.len) / sizeof(union ofp_action), \
(ITER) = ofputil_action_next(ITER)))
-int validate_actions(const union ofp_action *, size_t n_actions,
- const struct flow *, int max_ports);
+enum ofperr validate_actions(const union ofp_action *, size_t n_actions,
+ const struct flow *, int max_ports);
bool action_outputs_to_port(const union ofp_action *, ovs_be16 port);
-int ofputil_pull_actions(struct ofpbuf *, unsigned int actions_len,
- union ofp_action **, size_t *);
+enum ofperr ofputil_pull_actions(struct ofpbuf *, unsigned int actions_len,
+ union ofp_action **, size_t *);
bool ofputil_actions_equal(const union ofp_action *a, size_t n_a,
const union ofp_action *b, size_t n_b);
union ofp_action *ofputil_actions_clone(const union ofp_action *, size_t n);
-\f
-/* OpenFlow vendors.
- *
- * These functions map OpenFlow 32-bit vendor IDs (as used in struct
- * ofp_vendor_header) into 4-bit values to embed in an "int". The 4-bit values
- * are only used internally in Open vSwitch and never appear on the wire, so
- * particular codes used are not important.
- */
-
-/* Vendor error numbers currently used in Open vSwitch. */
-#define OFPUTIL_VENDORS \
- /* vendor name vendor value */ \
- OFPUTIL_VENDOR(OFPUTIL_VENDOR_OPENFLOW, 0x00000000) \
- OFPUTIL_VENDOR(OFPUTIL_VENDOR_NICIRA, NX_VENDOR_ID)
-
-/* OFPUTIL_VENDOR_* definitions. */
-enum ofputil_vendor_codes {
-#define OFPUTIL_VENDOR(NAME, VENDOR_ID) NAME,
- OFPUTIL_VENDORS
- OFPUTIL_N_VENDORS
-#undef OFPUTIL_VENDOR
-};
-\f
-/* Error codes.
- *
- * We embed system errno values and OpenFlow standard and vendor extension
- * error codes into a single 31-bit space using the following encoding.
- * (Bit 31 is unused and assumed 0 to avoid negative "int" values.)
- *
- * 30 0
- * +------------------------------------------------------+
- * | 0 | success
- * +------------------------------------------------------+
- *
- * 30 29 0
- * +--+---------------------------------------------------+
- * | 0| errno value | errno value
- * +--+---------------------------------------------------+
- *
- * 30 29 26 25 16 15 0
- * +--+-------+----------------+--------------------------+
- * | 1| 0 | type | code | standard OpenFlow
- * +--+-------+----------------+--------------------------+ error
- *
- * 30 29 26 25 16 15 0
- * +--+-------+----------------+--------------------------+ Nicira
- * | 1| vendor| type | code | NXET_VENDOR
- * +--+-------+----------------+--------------------------+ error extension
- *
- * C and POSIX say that errno values are positive. We assume that they are
- * less than 2**29. They are actually less than 65536 on at least Linux,
- * FreeBSD, OpenBSD, and Windows.
- *
- * The 'vendor' field holds one of the OFPUTIL_VENDOR_* codes defined above.
- * It must be nonzero.
- *
- * Negative values are not defined.
- */
-
-/* Currently 4 bits are allocated to the "vendor" field. Make sure that all
- * the vendor codes can fit. */
-BUILD_ASSERT_DECL(OFPUTIL_N_VENDORS <= 16);
-
-/* These are macro versions of the functions defined below. The macro versions
- * are intended for use in contexts where function calls are not allowed,
- * e.g. static initializers and case labels. */
-#define OFP_MKERR(TYPE, CODE) ((1 << 30) | ((TYPE) << 16) | (CODE))
-#define OFP_MKERR_VENDOR(VENDOR, TYPE, CODE) \
- ((1 << 30) | ((VENDOR) << 26) | ((TYPE) << 16) | (CODE))
-#define OFP_MKERR_NICIRA(TYPE, CODE) \
- OFP_MKERR_VENDOR(OFPUTIL_VENDOR_NICIRA, TYPE, CODE)
-
-/* Returns the standard OpenFlow error with the specified 'type' and 'code' as
- * an integer. */
-static inline int
-ofp_mkerr(uint16_t type, uint16_t code)
-{
- return OFP_MKERR(type, code);
-}
-
-/* Returns the OpenFlow vendor error with the specified 'vendor', 'type', and
- * 'code' as an integer. 'vendor' must be an OFPUTIL_VENDOR_* constant. */
-static inline int
-ofp_mkerr_vendor(uint8_t vendor, uint16_t type, uint16_t code)
-{
- assert(vendor < OFPUTIL_N_VENDORS);
- return OFP_MKERR_VENDOR(vendor, type, code);
-}
-
-/* Returns the OpenFlow vendor error with Nicira as vendor, with the specific
- * 'type' and 'code', as an integer. */
-static inline int
-ofp_mkerr_nicira(uint16_t type, uint16_t code)
-{
- return OFP_MKERR_NICIRA(type, code);
-}
-
-/* Returns true if 'error' encodes an OpenFlow standard or vendor extension
- * error codes as documented above. */
-static inline bool
-is_ofp_error(int error)
-{
- return (error & (1 << 30)) != 0;
-}
-
-/* Returns true if 'error' appears to be a system errno value. */
-static inline bool
-is_errno(int error)
-{
- return !is_ofp_error(error);
-}
-
-/* Returns the "vendor" part of the OpenFlow error code 'error' (which must be
- * in the format explained above). This is normally one of the
- * OFPUTIL_VENDOR_* constants. Returns OFPUTIL_VENDOR_OPENFLOW (0) for a
- * standard OpenFlow error. */
-static inline uint8_t
-get_ofp_err_vendor(int error)
-{
- return (error >> 26) & 0xf;
-}
-
-/* Returns the "type" part of the OpenFlow error code 'error' (which must be in
- * the format explained above). */
-static inline uint16_t
-get_ofp_err_type(int error)
-{
- return (error >> 16) & 0x3ff;
-}
-
-/* Returns the "code" part of the OpenFlow error code 'error' (which must be in
- * the format explained above). */
-static inline uint16_t
-get_ofp_err_code(int error)
-{
- return error & 0xffff;
-}
-
-struct ofpbuf *ofputil_encode_error_msg(int error, const struct ofp_header *);
-int ofputil_decode_error_msg(const struct ofp_header *, size_t *payload_ofs);
-
-/* String versions of errors. */
-void ofputil_format_error(struct ds *, int error);
-char *ofputil_error_to_string(int error);
/* Handy utility for parsing flows and actions. */
bool ofputil_parse_key_value(char **stringp, char **keyp, char **valuep);
projects / openvswitch / blobdiff