[dpdk-dev] [PATCH] bpf: add missed EXPERIMENTAL tags

[Konstantin Ananyev <konstantin.ananyev@intel.com>]

- add EXPERIMENTAL tag for the section in MAINTAINERS.
- add EXPERIMENTAL tag to BPF public API files.
- add attribute __rte_experimental to BPF public API declarations.

Fixes: 94972f35a02e ("bpf: add BPF loading and execution framework")
Fixes: 5dba93ae5f2d ("bpf: add ability to load eBPF program from ELF")
Fixes: a93ff62a8938 ("bpf: add BPF loading and execution framework")

Reported-by: Thomas Monjalon <thomas@monjalon.net>
Signed-off-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
---
 MAINTAINERS                     |  2 +-
 lib/librte_bpf/rte_bpf.h        | 26 ++++++++++++++++----------
 lib/librte_bpf/rte_bpf_ethdev.h | 15 ++++++++++-----
 3 files changed, 27 insertions(+), 16 deletions(-)

diff --git a/MAINTAINERS b/MAINTAINERS
index 7a18e0dbf..2663f1c03 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1100,7 +1100,7 @@ Latency statistics
 M: Reshma Pattan <reshma.pattan@intel.com>
 F: lib/librte_latencystats/
 
-BPF
+BPF - EXPERIMENTAL
 M: Konstantin Ananyev <konstantin.ananyev@intel.com>
 F: lib/librte_bpf/
 F: test/bpf/
diff --git a/lib/librte_bpf/rte_bpf.h b/lib/librte_bpf/rte_bpf.h
index 1d6c4a9d2..1249a992c 100644
--- a/lib/librte_bpf/rte_bpf.h
+++ b/lib/librte_bpf/rte_bpf.h
@@ -6,7 +6,8 @@
 #define _RTE_BPF_H_
 
 /**
- * @file
+ * @file rte_bpf.h
+ * @b EXPERIMENTAL: this API may change without prior notice
  *
  * RTE BPF support.
  * librte_bpf provides a framework to load and execute eBPF bytecode
@@ -99,7 +100,8 @@ struct rte_bpf;
  * @param bpf
  *   BPF handle to destroy.
  */
-void rte_bpf_destroy(struct rte_bpf *bpf);
+void __rte_experimental
+rte_bpf_destroy(struct rte_bpf *bpf);
 
 /**
  * Create a new eBPF execution context and load given BPF code into it.
@@ -113,7 +115,8 @@ void rte_bpf_destroy(struct rte_bpf *bpf);
  *   - EINVAL - invalid parameter passed to function
  *   - ENOMEM - can't reserve enough memory
  */
-struct rte_bpf *rte_bpf_load(const struct rte_bpf_prm *prm);
+struct rte_bpf * __rte_experimental
+rte_bpf_load(const struct rte_bpf_prm *prm);
 
 /**
  * Create a new eBPF execution context and load BPF code from given ELF
@@ -132,9 +135,9 @@ struct rte_bpf *rte_bpf_load(const struct rte_bpf_prm *prm);
  *   - EINVAL - invalid parameter passed to function
  *   - ENOMEM - can't reserve enough memory
  */
-struct rte_bpf *rte_bpf_elf_load(const struct rte_bpf_prm *prm,
-	const char *fname, const char *sname);
-
+struct rte_bpf * __rte_experimental
+rte_bpf_elf_load(const struct rte_bpf_prm *prm, const char *fname,
+		const char *sname);
 /**
  * Execute given BPF bytecode.
  *
@@ -145,7 +148,8 @@ struct rte_bpf *rte_bpf_elf_load(const struct rte_bpf_prm *prm,
  * @return
  *   BPF execution return value.
  */
-uint64_t rte_bpf_exec(const struct rte_bpf *bpf, void *ctx);
+uint64_t __rte_experimental
+rte_bpf_exec(const struct rte_bpf *bpf, void *ctx);
 
 /**
  * Execute given BPF bytecode over a set of input contexts.
@@ -161,8 +165,9 @@ uint64_t rte_bpf_exec(const struct rte_bpf *bpf, void *ctx);
  * @return
  *   number of successfully processed inputs.
  */
-uint32_t rte_bpf_exec_burst(const struct rte_bpf *bpf, void *ctx[],
-	uint64_t rc[], uint32_t num);
+uint32_t __rte_experimental
+rte_bpf_exec_burst(const struct rte_bpf *bpf, void *ctx[], uint64_t rc[],
+		uint32_t num);
 
 /**
  * Provide information about natively compield code for given BPF handle.
@@ -175,7 +180,8 @@ uint32_t rte_bpf_exec_burst(const struct rte_bpf *bpf, void *ctx[],
  *   - -EINVAL if the parameters are invalid.
  *   - Zero if operation completed successfully.
  */
-int rte_bpf_get_jit(const struct rte_bpf *bpf, struct rte_bpf_jit *jit);
+int __rte_experimental
+rte_bpf_get_jit(const struct rte_bpf *bpf, struct rte_bpf_jit *jit);
 
 #ifdef __cplusplus
 }
diff --git a/lib/librte_bpf/rte_bpf_ethdev.h b/lib/librte_bpf/rte_bpf_ethdev.h
index b4d4d3b16..31731e7a9 100644
--- a/lib/librte_bpf/rte_bpf_ethdev.h
+++ b/lib/librte_bpf/rte_bpf_ethdev.h
@@ -6,7 +6,8 @@
 #define _RTE_BPF_ETHDEV_H_
 
 /**
- * @file
+ * @file rte_bpf_ethdev.h
+ * @b EXPERIMENTAL: this API may change without prior notice
  *
  * API to install BPF filter as RX/TX callbacks for eth devices.
  * Note that right now:
@@ -44,7 +45,8 @@ enum {
  * @param queue
  *   The identifier of the RX queue on the given port
  */
-void rte_bpf_eth_rx_unload(uint16_t port, uint16_t queue);
+void __rte_experimental
+rte_bpf_eth_rx_unload(uint16_t port, uint16_t queue);
 
 /**
  * Unload previously loaded BPF program (if any) from given TX port/queue
@@ -55,7 +57,8 @@ void rte_bpf_eth_rx_unload(uint16_t port, uint16_t queue);
  * @param queue
  *   The identifier of the TX queue on the given port
  */
-void rte_bpf_eth_tx_unload(uint16_t port, uint16_t queue);
+void __rte_experimental
+rte_bpf_eth_tx_unload(uint16_t port, uint16_t queue);
 
 /**
  * Load BPF program from the ELF file and install callback to execute it
@@ -77,7 +80,8 @@ void rte_bpf_eth_tx_unload(uint16_t port, uint16_t queue);
  * @return
  *   Zero on successful completion or negative error code otherwise.
  */
-int rte_bpf_eth_rx_elf_load(uint16_t port, uint16_t queue,
+int __rte_experimental
+rte_bpf_eth_rx_elf_load(uint16_t port, uint16_t queue,
 	const struct rte_bpf_prm *prm, const char *fname, const char *sname,
 	uint32_t flags);
 
@@ -101,7 +105,8 @@ int rte_bpf_eth_rx_elf_load(uint16_t port, uint16_t queue,
  * @return
  *   Zero on successful completion or negative error code otherwise.
  */
-int rte_bpf_eth_tx_elf_load(uint16_t port, uint16_t queue,
+int __rte_experimental
+rte_bpf_eth_tx_elf_load(uint16_t port, uint16_t queue,
 	const struct rte_bpf_prm *prm, const char *fname, const char *sname,
 	uint32_t flags);
 
-- 
2.13.6