bpf/arm: add build infrastructure

Add build infrastructure and documentation
update for arm64 JIT support.

Signed-off-by: Jerin Jacob <jerinj@marvell.com>
Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>

diff --git a/MAINTAINERS b/MAINTAINERS
index b020662..f8a56e2 100644 (file)
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -251,6 +251,7 @@ M: Gavin Hu <gavin.hu@arm.com>
 F: lib/librte_eal/common/include/arch/arm/*_64.h
 F: lib/librte_net/net_crc_neon.h
 F: lib/librte_acl/acl_run_neon.*
 F: lib/librte_eal/common/include/arch/arm/*_64.h
 F: lib/librte_net/net_crc_neon.h
 F: lib/librte_acl/acl_run_neon.*

+F: lib/librte_bpf/bpf_jit_arm64.c

 F: lib/librte_lpm/rte_lpm_neon.h
 F: lib/librte_hash/rte*_arm64.h
 F: lib/librte_efd/rte*_arm64.h
 F: lib/librte_lpm/rte_lpm_neon.h
 F: lib/librte_hash/rte*_arm64.h
 F: lib/librte_efd/rte*_arm64.h

diff --git a/doc/guides/prog_guide/bpf_lib.rst b/doc/guides/prog_guide/bpf_lib.rst
index 7c08e6b..9c728da 100644 (file)
--- a/doc/guides/prog_guide/bpf_lib.rst
+++ b/doc/guides/prog_guide/bpf_lib.rst
@@ -30,7 +30,7 @@ The library API provides the following basic operations:
 Not currently supported eBPF features
 -------------------------------------
 
 Not currently supported eBPF features
 -------------------------------------
 

- - JIT for non X86_64 platforms
+ - JIT support only available for X86_64 and arm64 platforms

  - cBPF
  - tail-pointer call
  - eBPF MAP
  - cBPF
  - tail-pointer call
  - eBPF MAP

diff --git a/doc/guides/rel_notes/release_19_11.rst b/doc/guides/rel_notes/release_19_11.rst
index 23ceb8f..85953b9 100644 (file)
--- a/doc/guides/rel_notes/release_19_11.rst
+++ b/doc/guides/rel_notes/release_19_11.rst
@@ -110,6 +110,11 @@ New Features
   Added stateful decompression support in the Intel QuickAssist Technology PMD.
   Please note that stateful compression is not supported.
 
   Added stateful decompression support in the Intel QuickAssist Technology PMD.
   Please note that stateful compression is not supported.
 

+* **Added eBPF JIT support for arm64.**
+
+  Added eBPF JIT support for arm64 architecture to improve the eBPF program
+  performance.
+

 
 Removed Items
 -------------
 
 Removed Items
 -------------

diff --git a/lib/librte_bpf/Makefile b/lib/librte_bpf/Makefile
index c0e8aaa..419a516 100644 (file)
--- a/lib/librte_bpf/Makefile
+++ b/lib/librte_bpf/Makefile
@@ -31,6 +31,8 @@ SRCS-$(CONFIG_RTE_LIBRTE_BPF) += bpf_load_elf.c
 endif
 ifeq ($(CONFIG_RTE_ARCH_X86_64),y)
 SRCS-$(CONFIG_RTE_LIBRTE_BPF) += bpf_jit_x86.c
 endif
 ifeq ($(CONFIG_RTE_ARCH_X86_64),y)
 SRCS-$(CONFIG_RTE_LIBRTE_BPF) += bpf_jit_x86.c

+else ifeq ($(CONFIG_RTE_ARCH_ARM64),y)
+SRCS-$(CONFIG_RTE_LIBRTE_BPF) += bpf_jit_arm64.c

 endif
 
 # install header files
 endif
 
 # install header files

diff --git a/lib/librte_bpf/bpf.c b/lib/librte_bpf/bpf.c
index cc963d5..7e1879f 100644 (file)
--- a/lib/librte_bpf/bpf.c
+++ b/lib/librte_bpf/bpf.c
@@ -41,8 +41,10 @@ bpf_jit(struct rte_bpf *bpf)
 {
        int32_t rc;
 
 {
        int32_t rc;
 

-#ifdef RTE_ARCH_X86_64
+#if defined(RTE_ARCH_X86_64)

        rc = bpf_jit_x86(bpf);
        rc = bpf_jit_x86(bpf);

+#elif defined(RTE_ARCH_ARM64)
+       rc = bpf_jit_arm64(bpf);

 #else
        rc = -ENOTSUP;
 #endif
 #else
        rc = -ENOTSUP;
 #endif

diff --git a/lib/librte_bpf/bpf_impl.h b/lib/librte_bpf/bpf_impl.h
index b577e2c..03ba0ae 100644 (file)
--- a/lib/librte_bpf/bpf_impl.h
+++ b/lib/librte_bpf/bpf_impl.h
@@ -25,9 +25,8 @@ extern int bpf_validate(struct rte_bpf *bpf);
 
 extern int bpf_jit(struct rte_bpf *bpf);
 
 
 extern int bpf_jit(struct rte_bpf *bpf);
 

-#ifdef RTE_ARCH_X86_64

 extern int bpf_jit_x86(struct rte_bpf *);
 extern int bpf_jit_x86(struct rte_bpf *);

-#endif
+extern int bpf_jit_arm64(struct rte_bpf *);

 
 extern int rte_bpf_logtype;
 
 
 extern int rte_bpf_logtype;
 

diff --git a/lib/librte_bpf/bpf_jit_arm64.c b/lib/librte_bpf/bpf_jit_arm64.c
new file mode 100644 (file)
index 0000000..621bb7f
--- /dev/null
+++ b/lib/librte_bpf/bpf_jit_arm64.c
@@ -0,0 +1,19 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(C) 2019 Marvell International Ltd.
+ */
+
+#include <errno.h>
+
+#include <rte_common.h>
+
+#include "bpf_impl.h"
+/*
+ * Produce a native ISA version of the given BPF code.
+ */
+int
+bpf_jit_arm64(struct rte_bpf *bpf)
+{
+       RTE_SET_USED(bpf);
+
+       return -ENOTSUP;
+}

diff --git a/lib/librte_bpf/meson.build b/lib/librte_bpf/meson.build
index 11c1fb5..13fc02d 100644 (file)
--- a/lib/librte_bpf/meson.build
+++ b/lib/librte_bpf/meson.build
@@ -10,6 +10,8 @@ sources = files('bpf.c',
 
 if arch_subdir == 'x86' and dpdk_conf.get('RTE_ARCH_64')
        sources += files('bpf_jit_x86.c')
 
 if arch_subdir == 'x86' and dpdk_conf.get('RTE_ARCH_64')
        sources += files('bpf_jit_x86.c')

+elif dpdk_conf.has('RTE_ARCH_ARM64')
+       sources += files('bpf_jit_arm64.c')

 endif
 
 install_headers = files('bpf_def.h',
 endif
 
 install_headers = files('bpf_def.h',