Whenever possible (if the library ships a pkg-config file) use meson's
dependency() function to look for it, as it will automatically add it
to the Requires.private list if needed, to allow for static builds to
succeed for reverse dependencies of DPDK. Otherwise the recursive
dependencies are not parsed, and users doing static builds have to
resolve them manually by themselves.
When using this API avoid additional checks that are superfluous and
take extra time, and avoid adding the linker flag manually which causes
it to be duplicated.
Signed-off-by: Luca Boccassi <bluca@debian.org>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
Tested-by: Bruce Richardson <bruce.richardson@intel.com>
Rather than relying on the target machine architecture, use the
size of a pointer from the compiler to determine if we are 64-bits
or not. This allows correct behaviour when you pass -m32 as a compile
option. It also allows us to use this value repeatedly throughout the
repo rather than continually testing for the sizeof(void*).
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Tested-by: Luca Boccassi <bluca@debian.org>
Acked-by: Luca Boccassi <bluca@debian.org>
x86 jit can generate invalid code for (BPF_LD | BPF_IMM | EBPF_DW)
instructions, when immediate value is bigger then INT32_MAX.
Fixes: cc752e43e079 ("bpf: add JIT compilation for x86_64 ISA")
Cc: stable@dpdk.org
Signed-off-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
eal: add shorthand __rte_weak macro
qat: update code to use __rte_weak macro
avf: update code to use __rte_weak macro
fm10k: update code to use __rte_weak macro
i40e: update code to use __rte_weak macro
ixgbe: update code to use __rte_weak macro
mlx5: update code to use __rte_weak macro
virtio: update code to use __rte_weak macro
acl: update code to use __rte_weak macro
bpf: update code to use __rte_weak macro
Signed-off-by: Keith Wiles <keith.wiles@intel.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
The JIT is only supported on x86_64 so disable for 32-bit builds.
Fixes: cc752e43e079 ("bpf: add JIT compilation for x86_64 ISA")
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
Acked-by: Hemant Agrawal <hemant.agrawal@nxp.com>
Add checks for:
- use/return uninitialized registers and/or stack data
- possible memory access boundaries violation
- invalid arguments for the function
Signed-off-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
Extend struct rte_bpf_xsym with new fields to provide information about:
- for variables - type and size
- for functions - number of arguments and type/size of each argument
and return value
Such information would allow validate code to perform
more extensive checking on input BPF program and catch
misbehaving BPF code.
That change would cause ABI/API breakage for librte_bpf.
Signed-off-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
A constructor is usually declared with RTE_INIT* macros.
As it is a static function, no need to declare before its definition.
The macro is used directly in the function definition.
Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
- 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 object file")
Fixes: a93ff62a8938 ("bpf: introduce basic Rx/Tx filters")
Reported-by: Thomas Monjalon <thomas@monjalon.net>
Signed-off-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
Introduce API to install BPF based filters on ethdev RX/TX path.
Current implementation is pure SW one, based on ethdev RX/TX
callback mechanism.
Signed-off-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
Acked-by: Ferruh Yigit <ferruh.yigit@intel.com>
Add checks for:
- all instructions are valid ones
(known opcodes, correct syntax, valid reg/off/imm values, etc.)
- no unreachable instructions
- no loops
- basic stack boundaries checks
- division by zero
Still need to add checks for:
- use/return only initialized registers and stack data.
- memory boundaries violation
Signed-off-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
Acked-by: Ferruh Yigit <ferruh.yigit@intel.com>
Introduce rte_bpf_elf_load() function to provide ability to
load eBPF program from ELF object file.
It also adds dependency on libelf.
Signed-off-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
Acked-by: Ferruh Yigit <ferruh.yigit@intel.com>
librte_bpf provides a framework to load and execute eBPF bytecode
inside user-space dpdk based applications.
It supports basic set of features from eBPF spec
(https://www.kernel.org/doc/Documentation/networking/filter.txt).
Not currently supported features:
- JIT
- cBPF
- tail-pointer call
- eBPF MAP
- skb
- function calls for 32-bit apps
- mbuf pointer as input parameter for 32-bit apps
Signed-off-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
Acked-by: Ferruh Yigit <ferruh.yigit@intel.com>
