1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2019-2020 Broadcom
14 #include "tf_project.h"
19 * Truflow Core API Header File
22 /********** BEGIN Truflow Core DEFINITIONS **********/
25 #define TF_KILOBYTE 1024
26 #define TF_MEGABYTE (1024 * 1024)
32 TF_DIR_RX, /**< Receive */
33 TF_DIR_TX, /**< Transmit */
41 TF_MEM_INTERNAL, /**< Internal */
42 TF_MEM_EXTERNAL, /**< External */
47 * The size of the external action record (Wh+/Brd2)
49 * Currently set to 512.
51 * AR (16B) + encap (256B) + stats_ptrs (8) + resvd (8)
52 * + stats (16) = 304 aligned on a 16B boundary
54 * Theoretically, the size should be smaller. ~304B
56 #define TF_ACTION_RECORD_SZ 512
61 * Defines a single pool of external action records of
62 * fixed size. Currently, this is an index.
64 #define TF_EXT_POOL_ENTRY_SZ_BYTES 1
67 * External pool entry count
69 * Defines the number of entries in the external action pool
71 #define TF_EXT_POOL_ENTRY_CNT (1 * 1024)
74 * Number of external pools
76 #define TF_EXT_POOL_CNT_MAX 1
81 #define TF_EXT_POOL_0 0 /**< matches TF_TBL_TYPE_EXT */
82 #define TF_EXT_POOL_1 1 /**< matches TF_TBL_TYPE_EXT_0 */
84 /** EEM record AR helper
86 * Helpers to handle the Action Record Pointer in the EEM Record Entry.
88 * Convert absolute offset to action record pointer in EEM record entry
89 * Convert action record pointer in EEM record entry to absolute offset
91 #define TF_ACT_REC_OFFSET_2_PTR(offset) ((offset) >> 4)
92 #define TF_ACT_REC_PTR_2_OFFSET(offset) ((offset) << 4)
94 #define TF_ACT_REC_INDEX_2_OFFSET(idx) ((idx) << 9)
99 #define TF_BITS_2_BYTES(num_bits) (((num_bits) + 7) / 8)
101 /********** BEGIN API FUNCTION PROTOTYPES/PARAMETERS **********/
104 * @page general General
106 * @ref tf_open_session
108 * @ref tf_attach_session
110 * @ref tf_close_session
114 /** Session Version defines
116 * The version controls the format of the tf_session and
117 * tf_session_info structure. This is to assure upgrade between
118 * versions can be supported.
120 #define TF_SESSION_VER_MAJOR 1 /**< Major Version */
121 #define TF_SESSION_VER_MINOR 0 /**< Minor Version */
122 #define TF_SESSION_VER_UPDATE 0 /**< Update Version */
126 * Name of the TruFlow control channel interface. Expects
127 * format to be RTE Name specific, i.e. rte_eth_dev_get_name_by_port()
129 #define TF_SESSION_NAME_MAX 64
131 #define TF_FW_SESSION_ID_INVALID 0xFF /**< Invalid FW Session ID define */
133 /** Session Identifier
135 * Unique session identifier which includes PCIe bus info to
136 * distinguish the PF and session info to identify the associated
137 * TruFlow session. Session ID is constructed from the passed in
138 * ctrl_chan_name in tf_open_session() together with an allocated
139 * fw_session_id. Done by TruFlow on tf_open_session().
141 union tf_session_id {
147 uint8_t fw_session_id;
153 * The version controls the format of the tf_session and
154 * tf_session_info structure. This is to assure upgrade between
155 * versions can be supported.
157 * Please see the TF_VER_MAJOR/MINOR and UPDATE defines.
159 struct tf_session_version {
165 /** Session supported device types
168 enum tf_device_type {
169 TF_DEVICE_TYPE_WH = 0, /**< Whitney+ */
170 TF_DEVICE_TYPE_BRD2, /**< TBD */
171 TF_DEVICE_TYPE_BRD3, /**< TBD */
172 TF_DEVICE_TYPE_BRD4, /**< TBD */
173 TF_DEVICE_TYPE_MAX /**< Maximum */
176 /** TruFlow Session Information
178 * Structure defining a TruFlow Session, also known as a Management
179 * session. This structure is initialized at time of
180 * tf_open_session(). It is passed to all of the TruFlow APIs as way
181 * to prescribe and isolate resources between different TruFlow ULP
184 struct tf_session_info {
186 * TrueFlow Version. Used to control the structure layout when
187 * sharing sessions. No guarantee that a secondary process
188 * would come from the same version of an executable.
189 * TruFlow initializes this variable on tf_open_session().
194 struct tf_session_version ver;
196 * will be STAILQ_ENTRY(tf_session_info) next
203 * Session ID is a unique identifier for the session. TruFlow
204 * initializes this variable during tf_open_session()
208 * Access: Truflow & ULP
210 union tf_session_id session_id;
212 * Protects access to core_data. Lock is initialized and owned
213 * by ULP. TruFlow can access the core_data without checking
221 * The core_data holds the TruFlow tf_session data
222 * structure. This memory is allocated and owned by TruFlow on
225 * TruFlow uses this memory for session management control
226 * until the session is closed by ULP. Access control is done
227 * by the spin_lock which ULP controls ahead of TruFlow API
230 * Please see tf_open_session_parms for specification details
238 * The core_data_sz_bytes specifies the size of core_data in
241 * The size is set by TruFlow on tf_open_session().
243 * Please see tf_open_session_parms for specification details
249 uint32_t core_data_sz_bytes;
254 * Contains a pointer to the session info. Allocated by ULP and passed
255 * to TruFlow using tf_open_session(). TruFlow will populate the
256 * session info at that time. Additional 'opens' can be done using
257 * same session_info by using tf_attach_session().
259 * It is expected that ULP allocates this memory as shared memory.
261 * NOTE: This struct must be within the BNXT PMD struct bnxt
262 * (bp). This allows use of container_of() to get access to the PMD.
265 struct tf_session_info *session;
270 * tf_open_session parameters definition.
272 struct tf_open_session_parms {
273 /** [in] ctrl_chan_name
275 * String containing name of control channel interface to be
276 * used for this session to communicate with firmware.
278 * The ctrl_chan_name can be looked up by using
279 * rte_eth_dev_get_name_by_port() within the ULP.
281 * ctrl_chan_name will be used as part of a name for any
282 * shared memory allocation.
284 char ctrl_chan_name[TF_SESSION_NAME_MAX];
287 * Boolean controlling the use and availability of shadow
288 * copy. Shadow copy will allow the TruFlow to keep track of
289 * resource content on the firmware side without having to
290 * query firmware. Additional private session core_data will
291 * be allocated if this boolean is set to 'true', default
294 * Size of memory depends on the NVM Resource settings for the
298 /** [in/out] session_id
300 * Session_id is unique per session.
302 * Session_id is composed of domain, bus, device and
303 * fw_session_id. The construction is done by parsing the
304 * ctrl_chan_name together with allocation of a fw_session_id.
306 * The session_id allows a session to be shared between devices.
308 union tf_session_id session_id;
311 * Device type is passed, one of Wh+, Brd2, Brd3, Brd4
313 enum tf_device_type device_type;
317 * Opens a new TruFlow management session.
319 * TruFlow will allocate session specific memory, shared memory, to
320 * hold its session data. This data is private to TruFlow.
322 * Multiple PFs can share the same session. An association, refcount,
323 * between session and PFs is maintained within TruFlow. Thus, a PF
324 * can attach to an existing session, see tf_attach_session().
326 * No other TruFlow APIs will succeed unless this API is first called and
329 * tf_open_session() returns a session id that can be used on attach.
332 * Pointer to TF handle
334 * Pointer to open parameters
337 * - (0) if successful.
338 * - (-EINVAL) on failure.
340 int tf_open_session(struct tf *tfp,
341 struct tf_open_session_parms *parms);
343 struct tf_attach_session_parms {
344 /** [in] ctrl_chan_name
346 * String containing name of control channel interface to be
347 * used for this session to communicate with firmware.
349 * The ctrl_chan_name can be looked up by using
350 * rte_eth_dev_get_name_by_port() within the ULP.
352 * ctrl_chan_name will be used as part of a name for any
353 * shared memory allocation.
355 char ctrl_chan_name[TF_SESSION_NAME_MAX];
357 /** [in] attach_chan_name
359 * String containing name of attach channel interface to be
360 * used for this session.
362 * The attach_chan_name must be given to a 2nd process after
363 * the primary process has been created. This is the
364 * ctrl_chan_name of the primary process and is used to find
365 * the shared memory for the session that the attach is going
368 char attach_chan_name[TF_SESSION_NAME_MAX];
372 * Session_id is unique per session. For Attach the session_id
373 * should be the session_id that was returned on the first
376 * Session_id is composed of domain, bus, device and
377 * fw_session_id. The construction is done by parsing the
378 * ctrl_chan_name together with allocation of a fw_session_id
379 * during tf_open_session().
381 * A reference count will be incremented on attach. A session
382 * is first fully closed when reference count is zero by
383 * calling tf_close_session().
385 union tf_session_id session_id;
389 * Attaches to an existing session. Used when more than one PF wants
390 * to share a single session. In that case all TruFlow management
391 * traffic will be sent to the TruFlow firmware using the 'PF' that
392 * did the attach not the session ctrl channel.
394 * Attach will increment a ref count as to manage the shared session data.
396 * [in] tfp, pointer to TF handle
397 * [in] parms, pointer to attach parameters
400 * - (0) if successful.
401 * - (-EINVAL) on failure.
403 int tf_attach_session(struct tf *tfp,
404 struct tf_attach_session_parms *parms);
407 * Closes an existing session. Cleans up all hardware and firmware
408 * state associated with the TruFlow application session when the last
409 * PF associated with the session results in refcount to be zero.
411 * Returns success or failure code.
413 int tf_close_session(struct tf *tfp);
416 * @page ident Identity Management
418 * @ref tf_alloc_identifier
420 * @ref tf_free_identifier
422 enum tf_identifier_type {
423 /** The L2 Context is returned from the L2 Ctxt TCAM lookup
424 * and can be used in WC TCAM or EM keys to virtualize further
427 TF_IDENT_TYPE_L2_CTXT,
428 /** The WC profile func is returned from the L2 Ctxt TCAM lookup
429 * to enable virtualization of the profile TCAM.
431 TF_IDENT_TYPE_PROF_FUNC,
432 /** The WC profile ID is included in the WC lookup key
433 * to enable virtualization of the WC TCAM hardware.
435 TF_IDENT_TYPE_WC_PROF,
436 /** The EM profile ID is included in the EM lookup key
437 * to enable virtualization of the EM hardware. (not required for Brd4
438 * as it has table scope)
440 TF_IDENT_TYPE_EM_PROF,
441 /** The L2 func is included in the ILT result and from recycling to
442 * enable virtualization of further lookups.
444 TF_IDENT_TYPE_L2_FUNC
447 /** tf_alloc_identifier parameter definition
449 struct tf_alloc_identifier_parms {
451 * [in] receive or transmit direction
455 * [in] Identifier type
457 enum tf_identifier_type ident_type;
459 * [out] Identifier allocated
464 /** tf_free_identifier parameter definition
466 struct tf_free_identifier_parms {
468 * [in] receive or transmit direction
472 * [in] Identifier type
474 enum tf_identifier_type ident_type;
481 /** allocate identifier resource
483 * TruFlow core will allocate a free id from the per identifier resource type
484 * pool reserved for the session during tf_open(). No firmware is involved.
486 * Returns success or failure code.
488 int tf_alloc_identifier(struct tf *tfp,
489 struct tf_alloc_identifier_parms *parms);
491 /** free identifier resource
493 * TruFlow core will return an id back to the per identifier resource type pool
494 * reserved for the session. No firmware is involved. During tf_close, the
495 * complete pool is returned to the firmware.
497 * Returns success or failure code.
499 int tf_free_identifier(struct tf *tfp,
500 struct tf_free_identifier_parms *parms);
503 * @page dram_table DRAM Table Scope Interface
505 * @ref tf_alloc_tbl_scope
507 * @ref tf_free_tbl_scope
509 * If we allocate the EEM memory from the core, we need to store it in
510 * the shared session data structure to make sure it can be freed later.
511 * (for example if the PF goes away)
513 * Current thought is that memory is allocated within core.
517 /** tf_alloc_tbl_scope_parms definition
519 struct tf_alloc_tbl_scope_parms {
521 * [in] All Maximum key size required.
523 uint16_t rx_max_key_sz_in_bits;
525 * [in] Maximum Action size required (includes inlined items)
527 uint16_t rx_max_action_entry_sz_in_bits;
529 * [in] Memory size in Megabytes
530 * Total memory size allocated by user to be divided
531 * up for actions, hash, counters. Only inline external actions.
532 * Use this variable or the number of flows, do not set both.
534 uint32_t rx_mem_size_in_mb;
536 * [in] Number of flows * 1000. If set, rx_mem_size_in_mb must equal 0.
538 uint32_t rx_num_flows_in_k;
540 * [in] Brd4 only receive table access interface id
542 uint32_t rx_tbl_if_id;
544 * [in] All Maximum key size required.
546 uint16_t tx_max_key_sz_in_bits;
548 * [in] Maximum Action size required (includes inlined items)
550 uint16_t tx_max_action_entry_sz_in_bits;
552 * [in] Memory size in Megabytes
553 * Total memory size allocated by user to be divided
554 * up for actions, hash, counters. Only inline external actions.
556 uint32_t tx_mem_size_in_mb;
558 * [in] Number of flows * 1000
560 uint32_t tx_num_flows_in_k;
562 * [in] Brd4 only receive table access interface id
564 uint32_t tx_tbl_if_id;
566 * [out] table scope identifier
568 uint32_t tbl_scope_id;
571 struct tf_free_tbl_scope_parms {
573 * [in] table scope identifier
575 uint32_t tbl_scope_id;
579 * allocate a table scope
581 * On Brd4 Firmware will allocate a scope ID. On other devices, the scope
582 * is a software construct to identify an EEM table. This function will
583 * divide the hash memory/buckets and records according to the device
584 * device constraints based upon calculations using either the number of flows
585 * requested or the size of memory indicated. Other parameters passed in
586 * determine the configuration (maximum key size, maximum external action record
589 * This API will allocate the table region in
590 * DRAM, program the PTU page table entries, and program the number of static
591 * buckets (if Brd4) in the RX and TX CFAs. Buckets are assumed to start at
592 * 0 in the EM memory for the scope. Upon successful completion of this API,
593 * hash tables are fully initialized and ready for entries to be inserted.
595 * A single API is used to allocate a common table scope identifier in both
596 * receive and transmit CFA. The scope identifier is common due to nature of
597 * connection tracking sending notifications between RX and TX direction.
599 * The receive and transmit table access identifiers specify which rings will
600 * be used to initialize table DRAM. The application must ensure mutual
601 * exclusivity of ring usage for table scope allocation and any table update
604 * The hash table buckets, EM keys, and EM lookup results are stored in the
605 * memory allocated based on the rx_em_hash_mb/tx_em_hash_mb parameters. The
606 * hash table buckets are stored at the beginning of that memory.
608 * NOTE: No EM internal setup is done here. On chip EM records are managed
609 * internally by TruFlow core.
611 * Returns success or failure code.
613 int tf_alloc_tbl_scope(struct tf *tfp,
614 struct tf_alloc_tbl_scope_parms *parms);
620 * Firmware checks that the table scope ID is owned by the TruFlow
621 * session, verifies that no references to this table scope remains
622 * (Brd4 ILT) or Profile TCAM entries for either CFA (RX/TX) direction,
623 * then frees the table scope ID.
625 * Returns success or failure code.
627 int tf_free_tbl_scope(struct tf *tfp,
628 struct tf_free_tbl_scope_parms *parms);
633 enum tf_tcam_tbl_type {
634 TF_TCAM_TBL_TYPE_L2_CTXT_TCAM,
635 TF_TCAM_TBL_TYPE_PROF_TCAM,
636 TF_TCAM_TBL_TYPE_WC_TCAM,
637 TF_TCAM_TBL_TYPE_SP_TCAM,
638 TF_TCAM_TBL_TYPE_CT_RULE_TCAM,
639 TF_TCAM_TBL_TYPE_VEB_TCAM,
645 * @page tcam TCAM Access
647 * @ref tf_alloc_tcam_entry
649 * @ref tf_set_tcam_entry
651 * @ref tf_get_tcam_entry
653 * @ref tf_free_tcam_entry
656 /** tf_alloc_tcam_entry parameter definition
658 struct tf_alloc_tcam_entry_parms {
660 * [in] receive or transmit direction
664 * [in] TCAM table type
666 enum tf_tcam_tbl_type tcam_tbl_type;
668 * [in] Enable search for matching entry
670 uint8_t search_enable;
672 * [in] Key data to match on (if search)
676 * [in] key size in bits (if search)
678 uint16_t key_sz_in_bits;
680 * [in] Mask data to match on (if search)
684 * [in] Priority of entry requested (definition TBD)
688 * [out] If search, set if matching entry found
692 * [out] Current refcnt after allocation
696 * [out] Idx allocated
702 /** allocate TCAM entry
704 * Allocate a TCAM entry - one of these types:
711 * This function allocates a TCAM table record. This function
712 * will attempt to allocate a TCAM table entry from the session
713 * owned TCAM entries or search a shadow copy of the TCAM table for a
714 * matching entry if search is enabled. Key, mask and result must match for
715 * hit to be set. Only TruFlow core data is accessed.
716 * A hash table to entry mapping is maintained for search purposes. If
717 * search is not enabled, the first available free entry is returned based
718 * on priority and alloc_cnt is set to 1. If search is enabled and a matching
719 * entry to entry_data is found, hit is set to TRUE and alloc_cnt is set to 1.
720 * RefCnt is also returned.
722 * Also returns success or failure code.
724 int tf_alloc_tcam_entry(struct tf *tfp,
725 struct tf_alloc_tcam_entry_parms *parms);
727 /** tf_set_tcam_entry parameter definition
729 struct tf_set_tcam_entry_parms {
731 * [in] receive or transmit direction
735 * [in] TCAM table type
737 enum tf_tcam_tbl_type tcam_tbl_type;
739 * [in] base index of the entry to program
743 * [in] struct containing key
747 * [in] struct containing mask fields
751 * [in] key size in bits (if search)
753 uint16_t key_sz_in_bits;
755 * [in] struct containing result
759 * [in] struct containing result size in bits
761 uint16_t result_sz_in_bits;
766 * Program a TCAM table entry for a TruFlow session.
768 * If the entry has not been allocated, an error will be returned.
770 * Returns success or failure code.
772 int tf_set_tcam_entry(struct tf *tfp,
773 struct tf_set_tcam_entry_parms *parms);
775 /** tf_get_tcam_entry parameter definition
777 struct tf_get_tcam_entry_parms {
779 * [in] receive or transmit direction
783 * [in] TCAM table type
785 enum tf_tcam_tbl_type tcam_tbl_type;
787 * [in] index of the entry to get
791 * [out] struct containing key
795 * [out] struct containing mask fields
799 * [out] key size in bits
801 uint16_t key_sz_in_bits;
803 * [out] struct containing result
807 * [out] struct containing result size in bits
809 uint16_t result_sz_in_bits;
814 * Program a TCAM table entry for a TruFlow session.
816 * If the entry has not been allocated, an error will be returned.
818 * Returns success or failure code.
820 int tf_get_tcam_entry(struct tf *tfp,
821 struct tf_get_tcam_entry_parms *parms);
823 /** tf_free_tcam_entry parameter definition
825 struct tf_free_tcam_entry_parms {
827 * [in] receive or transmit direction
831 * [in] TCAM table type
833 enum tf_tcam_tbl_type tcam_tbl_type;
839 * [out] reference count after free
848 * Firmware checks to ensure the TCAM entries are owned by the TruFlow
849 * session. TCAM entry will be invalidated. All-ones mask.
852 * WCTCAM profile id of 0 must be used to invalidate an entry.
854 * Returns success or failure code.
856 int tf_free_tcam_entry(struct tf *tfp,
857 struct tf_free_tcam_entry_parms *parms);
860 * @page table Table Access
862 * @ref tf_alloc_tbl_entry
864 * @ref tf_free_tbl_entry
866 * @ref tf_set_tbl_entry
868 * @ref tf_get_tbl_entry
872 * Enumeration of TruFlow table types. A table type is used to identify a
875 * NOTE: The table type TF_TBL_TYPE_EXT is unique in that it is
876 * the only table type that is connected with a table scope.
879 /** Wh+/Brd2 Action Record */
880 TF_TBL_TYPE_FULL_ACT_RECORD,
881 /** Multicast Groups */
882 TF_TBL_TYPE_MCAST_GROUPS,
883 /** Action Encap 8 Bytes */
884 TF_TBL_TYPE_ACT_ENCAP_8B,
885 /** Action Encap 16 Bytes */
886 TF_TBL_TYPE_ACT_ENCAP_16B,
887 /** Action Encap 64 Bytes */
888 TF_TBL_TYPE_ACT_ENCAP_32B,
889 /** Action Encap 64 Bytes */
890 TF_TBL_TYPE_ACT_ENCAP_64B,
891 /** Action Source Properties SMAC */
892 TF_TBL_TYPE_ACT_SP_SMAC,
893 /** Action Source Properties SMAC IPv4 */
894 TF_TBL_TYPE_ACT_SP_SMAC_IPV4,
895 /** Action Source Properties SMAC IPv6 */
896 TF_TBL_TYPE_ACT_SP_SMAC_IPV6,
897 /** Action Statistics 64 Bits */
898 TF_TBL_TYPE_ACT_STATS_64,
899 /** Action Modify L4 Src Port */
900 TF_TBL_TYPE_ACT_MODIFY_SPORT,
901 /** Action Modify L4 Dest Port */
902 TF_TBL_TYPE_ACT_MODIFY_DPORT,
903 /** Action Modify IPv4 Source */
904 TF_TBL_TYPE_ACT_MODIFY_IPV4_SRC,
905 /** Action _Modify L4 Dest Port */
906 TF_TBL_TYPE_ACT_MODIFY_IPV4_DEST,
907 /** Action Modify IPv6 Source */
908 TF_TBL_TYPE_ACT_MODIFY_IPV6_SRC,
909 /** Action Modify IPv6 Destination */
910 TF_TBL_TYPE_ACT_MODIFY_IPV6_DEST,
914 /** Meter Profiles */
915 TF_TBL_TYPE_METER_PROF,
916 /** Meter Instance */
917 TF_TBL_TYPE_METER_INST,
919 TF_TBL_TYPE_MIRROR_CONFIG,
922 /** Brd4 Epoch 0 table */
924 /** Brd4 Epoch 1 table */
927 TF_TBL_TYPE_METADATA,
929 TF_TBL_TYPE_CT_STATE,
930 /** Brd4 Range Profile */
931 TF_TBL_TYPE_RANGE_PROF,
932 /** Brd4 Range Entry */
933 TF_TBL_TYPE_RANGE_ENTRY,
934 /** Brd4 LAG Entry */
936 /** Brd4 only VNIC/SVIF Table */
937 TF_TBL_TYPE_VNIC_SVIF,
941 /** External table type - initially 1 poolsize entries.
942 * All External table types are associated with a table
943 * scope. Internal types are not.
946 /** Future - external pool of size0 entries */
951 /** tf_alloc_tbl_entry parameter definition
953 struct tf_alloc_tbl_entry_parms {
955 * [in] Receive or transmit direction
959 * [in] Type of the allocation
961 enum tf_tbl_type type;
963 * [in] Enable search for matching entry. If the table type is
964 * internal the shadow copy will be searched before
965 * alloc. Session must be configured with shadow copy enabled.
967 uint8_t search_enable;
969 * [in] Result data to search for (if search_enable)
973 * [in] Result data size in bytes (if search_enable)
975 uint16_t result_sz_in_bytes;
977 * [out] If search_enable, set if matching entry found
981 * [out] Current ref count after allocation (if search_enable)
985 * [out] Idx of allocated entry or found entry (if search_enable)
990 /** allocate index table entries
994 * Allocate an on chip index table entry or search for a matching
995 * entry of the indicated type for this TruFlow session.
997 * Allocates an index table record. This function will attempt to
998 * allocate an entry or search an index table for a matching entry if
999 * search is enabled (only the shadow copy of the table is accessed).
1001 * If search is not enabled, the first available free entry is
1002 * returned. If search is enabled and a matching entry to entry_data
1003 * is found hit is set to TRUE and success is returned.
1007 * These are used to allocate inlined action record memory.
1009 * Allocates an external index table action record.
1012 * Implementation of the internals of this function will be a stack with push
1015 * Returns success or failure code.
1017 int tf_alloc_tbl_entry(struct tf *tfp,
1018 struct tf_alloc_tbl_entry_parms *parms);
1020 /** tf_free_tbl_entry parameter definition
1022 struct tf_free_tbl_entry_parms {
1024 * [in] Receive or transmit direction
1028 * [in] Type of the allocation type
1030 enum tf_tbl_type type;
1032 * [in] Index to free
1036 * [out] Reference count after free, only valid if session has been
1037 * created with shadow_copy.
1042 /** free index table entry
1044 * Used to free a previously allocated table entry.
1048 * If session has shadow_copy enabled the shadow DB is searched and if
1049 * found the element ref_cnt is decremented. If ref_cnt goes to
1050 * zero then the element is returned to the session pool.
1052 * If the session does not have a shadow DB the element is free'ed and
1053 * given back to the session pool.
1057 * Free's an external index table action record.
1060 * Implementation of the internals of this function will be a stack with push
1063 * Returns success or failure code.
1065 int tf_free_tbl_entry(struct tf *tfp,
1066 struct tf_free_tbl_entry_parms *parms);
1068 /** tf_set_tbl_entry parameter definition
1070 struct tf_set_tbl_entry_parms {
1072 * [in] Table scope identifier
1075 uint32_t tbl_scope_id;
1077 * [in] Receive or transmit direction
1081 * [in] Type of object to set
1083 enum tf_tbl_type type;
1091 uint16_t data_sz_in_bytes;
1093 * [in] Entry index to write to
1098 /** set index table entry
1100 * Used to insert an application programmed index table entry into a
1101 * previous allocated table location. A shadow copy of the table
1102 * is maintained (if enabled) (only for internal objects)
1104 * Returns success or failure code.
1106 int tf_set_tbl_entry(struct tf *tfp,
1107 struct tf_set_tbl_entry_parms *parms);
1109 /** tf_get_tbl_entry parameter definition
1111 struct tf_get_tbl_entry_parms {
1113 * [in] Receive or transmit direction
1117 * [in] Type of object to get
1119 enum tf_tbl_type type;
1127 uint16_t data_sz_in_bytes;
1129 * [in] Entry index to read
1134 /** get index table entry
1136 * Used to retrieve a previous set index table entry.
1138 * Reads and compares with the shadow table copy (if enabled) (only
1139 * for internal objects).
1141 * Returns success or failure code. Failure will be returned if the
1142 * provided data buffer is too small for the data type requested.
1144 int tf_get_tbl_entry(struct tf *tfp,
1145 struct tf_get_tbl_entry_parms *parms);
1148 * @page exact_match Exact Match Table
1150 * @ref tf_insert_em_entry
1152 * @ref tf_delete_em_entry
1154 * @ref tf_search_em_entry
1157 /** tf_insert_em_entry parameter definition
1159 struct tf_insert_em_entry_parms {
1161 * [in] receive or transmit direction
1165 * [in] internal or external
1169 * [in] ID of table scope to use (external only)
1171 uint32_t tbl_scope_id;
1173 * [in] ID of table interface to use (Brd4 only)
1177 * [in] ptr to structure containing key fields
1181 * [in] key bit length
1183 uint16_t key_sz_in_bits;
1185 * [in] ptr to structure containing result field
1189 * [out] result size in bits
1191 uint16_t em_record_sz_in_bits;
1193 * [in] duplicate check flag
1197 * [out] Flow handle value for the inserted entry. This is encoded
1198 * as the entries[4]:bucket[2]:hashId[1]:hash[14]
1200 uint64_t flow_handle;
1202 * [out] Flow id is returned as null (internal)
1203 * Flow id is the GFID value for the inserted entry (external)
1204 * This is the value written to the BD and useful information for mark.
1209 * tf_delete_em_entry parameter definition
1211 struct tf_delete_em_entry_parms {
1213 * [in] receive or transmit direction
1217 * [in] internal or external
1221 * [in] ID of table scope to use (external only)
1223 uint32_t tbl_scope_id;
1225 * [in] ID of table interface to use (Brd4 only)
1229 * [in] epoch group IDs of entry to delete
1230 * 2 element array with 2 ids. (Brd4 only)
1234 * [in] structure containing flow delete handle information
1236 uint64_t flow_handle;
1239 * tf_search_em_entry parameter definition
1241 struct tf_search_em_entry_parms {
1243 * [in] receive or transmit direction
1247 * [in] internal or external
1251 * [in] ID of table scope to use (external only)
1253 uint32_t tbl_scope_id;
1255 * [in] ID of table interface to use (Brd4 only)
1259 * [in] ptr to structure containing key fields
1263 * [in] key bit length
1265 uint16_t key_sz_in_bits;
1267 * [in/out] ptr to structure containing EM record fields
1271 * [out] result size in bits
1273 uint16_t em_record_sz_in_bits;
1275 * [in] epoch group IDs of entry to lookup
1276 * 2 element array with 2 ids. (Brd4 only)
1280 * [in] ptr to structure containing flow delete handle
1282 uint64_t flow_handle;
1285 /** insert em hash entry in internal table memory
1289 * This API inserts an exact match entry into internal EM table memory
1290 * of the specified direction.
1292 * Note: The EM record is managed within the TruFlow core and not the
1295 * Shadow copy of internal record table an association with hash and 1,2, or 4
1296 * associated buckets
1299 * This API inserts an exact match entry into DRAM EM table memory of the
1300 * specified direction and table scope.
1302 * When inserting an entry into an exact match table, the TruFlow library may
1303 * need to allocate a dynamic bucket for the entry (Brd4 only).
1305 * The insertion of duplicate entries in an EM table is not permitted. If a
1306 * TruFlow application can guarantee that it will never insert duplicates, it
1307 * can disable duplicate checking by passing a zero value in the dup_check
1308 * parameter to this API. This will optimize performance. Otherwise, the
1309 * TruFlow library will enforce protection against inserting duplicate entries.
1311 * Flow handle is defined in this document:
1313 * https://docs.google.com
1314 * /document/d/1NESu7RpTN3jwxbokaPfYORQyChYRmJgs40wMIRe8_-Q/edit
1316 * Returns success or busy code.
1319 int tf_insert_em_entry(struct tf *tfp,
1320 struct tf_insert_em_entry_parms *parms);
1322 /** delete em hash entry table memory
1326 * This API deletes an exact match entry from internal EM table memory of the
1327 * specified direction. If a valid flow ptr is passed in then that takes
1328 * precedence over the pointer to the complete key passed in.
1333 * This API deletes an exact match entry from EM table memory of the specified
1334 * direction and table scope. If a valid flow handle is passed in then that
1335 * takes precedence over the pointer to the complete key passed in.
1337 * The TruFlow library may release a dynamic bucket when an entry is deleted.
1340 * Returns success or not found code
1344 int tf_delete_em_entry(struct tf *tfp,
1345 struct tf_delete_em_entry_parms *parms);
1347 /** search em hash entry table memory
1351 * This API looks up an EM entry in table memory with the specified EM
1352 * key or flow (flow takes precedence) and direction.
1354 * The status will be one of: success or entry not found. If the lookup
1355 * succeeds, a pointer to the matching entry and the result record associated
1356 * with the matching entry will be provided.
1358 * If flow_handle is set, search shadow copy.
1360 * Otherwise, query the fw with key to get result.
1364 * This API looks up an EM entry in table memory with the specified EM
1365 * key or flow_handle (flow takes precedence), direction and table scope.
1367 * The status will be one of: success or entry not found. If the lookup
1368 * succeeds, a pointer to the matching entry and the result record associated
1369 * with the matching entry will be provided.
1371 * Returns success or not found code
1374 int tf_search_em_entry(struct tf *tfp,
1375 struct tf_search_em_entry_parms *parms);
1376 #endif /* _TF_CORE_H_ */