[1/8] bpf/arm64: add build infrastructure
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Commit Message
From: Jerin Jacob <jerinj@marvell.com>
Add build infrastructure and documentation
update for arm64 JIT support.
Signed-off-by: Jerin Jacob <jerinj@marvell.com>
---
MAINTAINERS | 1 +
doc/guides/prog_guide/bpf_lib.rst | 2 +-
doc/guides/rel_notes/release_19_11.rst | 5 +++++
lib/librte_bpf/Makefile | 2 ++
lib/librte_bpf/bpf.c | 4 +++-
lib/librte_bpf/bpf_impl.h | 3 +--
lib/librte_bpf/bpf_jit_arm64.c | 19 +++++++++++++++++++
lib/librte_bpf/meson.build | 2 ++
8 files changed, 34 insertions(+), 4 deletions(-)
create mode 100644 lib/librte_bpf/bpf_jit_arm64.c
@@ -252,6 +252,7 @@ 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_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
@@ -30,7 +30,7 @@ The library API provides the following basic operations:
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
@@ -56,6 +56,11 @@ New Features
Also, make sure to start the actual text at the margin.
=========================================================
+* **Added eBPF JIT support for arm64.**
+
+ Added eBPF JIT support for arm64 architecture to improve the eBPF program
+ performance.
+
Removed Items
-------------
@@ -31,6 +31,8 @@ SRCS-$(CONFIG_RTE_LIBRTE_BPF) += bpf_load_elf.c
endif
ifeq ($(CONFIG_RTE_ARCH_X86_64),y)
SRCS-$(CONFIG_RTE_LIBRTE_BPF) += bpf_jit_x86.c
+else ifeq ($(CONFIG_RTE_ARCH_ARM64),y)
+SRCS-$(CONFIG_RTE_LIBRTE_BPF) += bpf_jit_arm64.c
endif
# install header files
@@ -41,8 +41,10 @@ bpf_jit(struct rte_bpf *bpf)
{
int32_t rc;
-#ifdef RTE_ARCH_X86_64
+#if defined(RTE_ARCH_X86_64)
rc = bpf_jit_x86(bpf);
+#elif defined(RTE_ARCH_ARM64)
+ rc = bpf_jit_arm64(bpf);
#else
rc = -ENOTSUP;
#endif
@@ -25,9 +25,8 @@ extern int bpf_validate(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 *);
-#endif
+extern int bpf_jit_arm64(struct rte_bpf *);
extern int rte_bpf_logtype;
new file mode 100644
@@ -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;
+}
@@ -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')
+elif dpdk_conf.has('RTE_ARCH_ARM64')
+ sources += files('bpf_jit_arm64.c')
endif
install_headers = files('bpf_def.h',