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numam-dpdk/app/test/test_bpf.c
Stephen Hemminger 2eccf6afbe bpf: add function to convert classic BPF to DPDK BPF 
The pcap library emits classic BPF (32 bit) and is useful for
creating filter programs.  The DPDK BPF library only implements
extended BPF (eBPF).  Add an function to convert from old to
new.

The rte_bpf_convert function uses rte_malloc to put the resulting
program in hugepage shared memory so it can be passed from a
secondary process to a primary process.

The code to convert was originally done as part of the Linux
kernel implementation then converted to a userspace program.
See https://github.com/tklauser/filter2xdp

Both authors have agreed that it is allowable to create a modified
version of this code and license it with BSD license used by DPDK.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
Acked-by: Ray Kinsella <mdr@ashroe.eu>
2021-10-22 17:19:13 +02:00

3451 lines
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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2018 Intel Corporation
*/
#include <stdio.h>
#include <string.h>
#include <stdint.h>
#include <inttypes.h>
#include <rte_memory.h>
#include <rte_debug.h>
#include <rte_hexdump.h>
#include <rte_malloc.h>
#include <rte_random.h>
#include <rte_byteorder.h>
#include <rte_errno.h>
#include <rte_bpf.h>
#include <rte_ether.h>
#include <rte_ip.h>
#include "test.h"
/*
* Basic functional tests for librte_bpf.
* The main procedure - load eBPF program, execute it and
* compare restuls with expected values.
*/
struct dummy_offset {
uint64_t u64;
uint32_t u32;
uint16_t u16;
uint8_t u8;
};
struct dummy_vect8 {
struct dummy_offset in[8];
struct dummy_offset out[8];
};
struct dummy_net {
struct rte_ether_hdr eth_hdr;
struct rte_vlan_hdr vlan_hdr;
struct rte_ipv4_hdr ip_hdr;
};
#define DUMMY_MBUF_NUM 2
/* first mbuf in the packet, should always be at offset 0 */
struct dummy_mbuf {
struct rte_mbuf mb[DUMMY_MBUF_NUM];
uint8_t buf[DUMMY_MBUF_NUM][RTE_MBUF_DEFAULT_BUF_SIZE];
};
#define TEST_FILL_1 0xDEADBEEF
#define TEST_MUL_1 21
#define TEST_MUL_2 -100
#define TEST_SHIFT_1 15
#define TEST_SHIFT_2 33
#define TEST_SHIFT32_MASK (CHAR_BIT * sizeof(uint32_t) - 1)
#define TEST_SHIFT64_MASK (CHAR_BIT * sizeof(uint64_t) - 1)
#define TEST_JCC_1 0
#define TEST_JCC_2 -123
#define TEST_JCC_3 5678
#define TEST_JCC_4 TEST_FILL_1
#define TEST_IMM_1 UINT64_MAX
#define TEST_IMM_2 ((uint64_t)INT64_MIN)
#define TEST_IMM_3 ((uint64_t)INT64_MAX + INT32_MAX)
#define TEST_IMM_4 ((uint64_t)UINT32_MAX)
#define TEST_IMM_5 ((uint64_t)UINT32_MAX + 1)
#define TEST_MEMFROB 0x2a2a2a2a
#define STRING_GEEK 0x6B656567
#define STRING_WEEK 0x6B656577
#define TEST_NETMASK 0xffffff00
#define TEST_SUBNET 0xaca80200
uint8_t src_mac[] = { 0x00, 0xFF, 0xAA, 0xFF, 0xAA, 0xFF };
uint8_t dst_mac[] = { 0x00, 0xAA, 0xFF, 0xAA, 0xFF, 0xAA };
uint32_t ip_src_addr = (172U << 24) | (168U << 16) | (2 << 8) | 1;
uint32_t ip_dst_addr = (172U << 24) | (168U << 16) | (2 << 8) | 2;
struct bpf_test {
const char *name;
size_t arg_sz;
struct rte_bpf_prm prm;
void (*prepare)(void *);
int (*check_result)(uint64_t, const void *);
uint32_t allow_fail;
};
/*
* Compare return value and result data with expected ones.
* Report a failure if they don't match.
*/
static int
cmp_res(const char *func, uint64_t exp_rc, uint64_t ret_rc,
const void *exp_res, const void *ret_res, size_t res_sz)
{
int32_t ret;
ret = 0;
if (exp_rc != ret_rc) {
printf("%s@%d: invalid return value, expected: 0x%" PRIx64
",result: 0x%" PRIx64 "\n",
func, __LINE__, exp_rc, ret_rc);
ret |= -1;
}
if (memcmp(exp_res, ret_res, res_sz) != 0) {
printf("%s: invalid value\n", func);
rte_memdump(stdout, "expected", exp_res, res_sz);
rte_memdump(stdout, "result", ret_res, res_sz);
ret |= -1;
}
return ret;
}
/* store immediate test-cases */
static const struct ebpf_insn test_store1_prog[] = {
{
.code = (BPF_ST | BPF_MEM | BPF_B),
.dst_reg = EBPF_REG_1,
.off = offsetof(struct dummy_offset, u8),
.imm = TEST_FILL_1,
},
{
.code = (BPF_ST | BPF_MEM | BPF_H),
.dst_reg = EBPF_REG_1,
.off = offsetof(struct dummy_offset, u16),
.imm = TEST_FILL_1,
},
{
.code = (BPF_ST | BPF_MEM | BPF_W),
.dst_reg = EBPF_REG_1,
.off = offsetof(struct dummy_offset, u32),
.imm = TEST_FILL_1,
},
{
.code = (BPF_ST | BPF_MEM | EBPF_DW),
.dst_reg = EBPF_REG_1,
.off = offsetof(struct dummy_offset, u64),
.imm = TEST_FILL_1,
},
/* return 1 */
{
.code = (BPF_ALU | EBPF_MOV | BPF_K),
.dst_reg = EBPF_REG_0,
.imm = 1,
},
{
.code = (BPF_JMP | EBPF_EXIT),
},
};
static void
test_store1_prepare(void *arg)
{
struct dummy_offset *df;
df = arg;
memset(df, 0, sizeof(*df));
}
static int
test_store1_check(uint64_t rc, const void *arg)
{
const struct dummy_offset *dft;
struct dummy_offset dfe;
dft = arg;
memset(&dfe, 0, sizeof(dfe));
dfe.u64 = (int32_t)TEST_FILL_1;
dfe.u32 = dfe.u64;
dfe.u16 = dfe.u64;
dfe.u8 = dfe.u64;
return cmp_res(__func__, 1, rc, &dfe, dft, sizeof(dfe));
}
/* store register test-cases */
static const struct ebpf_insn test_store2_prog[] = {
{
.code = (EBPF_ALU64 | EBPF_MOV | BPF_K),
.dst_reg = EBPF_REG_2,
.imm = TEST_FILL_1,
},
{
.code = (BPF_STX | BPF_MEM | BPF_B),
.dst_reg = EBPF_REG_1,
.src_reg = EBPF_REG_2,
.off = offsetof(struct dummy_offset, u8),
},
{
.code = (BPF_STX | BPF_MEM | BPF_H),
.dst_reg = EBPF_REG_1,
.src_reg = EBPF_REG_2,
.off = offsetof(struct dummy_offset, u16),
},
{
.code = (BPF_STX | BPF_MEM | BPF_W),
.dst_reg = EBPF_REG_1,
.src_reg = EBPF_REG_2,
.off = offsetof(struct dummy_offset, u32),
},
{
.code = (BPF_STX | BPF_MEM | EBPF_DW),
.dst_reg = EBPF_REG_1,
.src_reg = EBPF_REG_2,
.off = offsetof(struct dummy_offset, u64),
},
/* return 1 */
{
.code = (BPF_ALU | EBPF_MOV | BPF_K),
.dst_reg = EBPF_REG_0,
.imm = 1,
},
{
.code = (BPF_JMP | EBPF_EXIT),
},
};
/* load test-cases */
static const struct ebpf_insn test_load1_prog[] = {
{
.code = (BPF_LDX | BPF_MEM | BPF_B),
.dst_reg = EBPF_REG_2,
.src_reg = EBPF_REG_1,
.off = offsetof(struct dummy_offset, u8),
},
{
.code = (BPF_LDX | BPF_MEM | BPF_H),
.dst_reg = EBPF_REG_3,
.src_reg = EBPF_REG_1,
.off = offsetof(struct dummy_offset, u16),
},
{
.code = (BPF_LDX | BPF_MEM | BPF_W),
.dst_reg = EBPF_REG_4,
.src_reg = EBPF_REG_1,
.off = offsetof(struct dummy_offset, u32),
},
{
.code = (BPF_LDX | BPF_MEM | EBPF_DW),
.dst_reg = EBPF_REG_0,
.src_reg = EBPF_REG_1,
.off = offsetof(struct dummy_offset, u64),
},
/* return sum */
{
.code = (EBPF_ALU64 | BPF_ADD | BPF_X),
.dst_reg = EBPF_REG_0,
.src_reg = EBPF_REG_4,
},
{
.code = (EBPF_ALU64 | BPF_ADD | BPF_X),
.dst_reg = EBPF_REG_0,
.src_reg = EBPF_REG_3,
},
{
.code = (EBPF_ALU64 | BPF_ADD | BPF_X),
.dst_reg = EBPF_REG_0,
.src_reg = EBPF_REG_2,
},
{
.code = (BPF_JMP | EBPF_EXIT),
},
};
static void
test_load1_prepare(void *arg)
{
struct dummy_offset *df;
df = arg;
memset(df, 0, sizeof(*df));
df->u64 = (int32_t)TEST_FILL_1;
df->u32 = df->u64;
df->u16 = df->u64;
df->u8 = df->u64;
}
static int
test_load1_check(uint64_t rc, const void *arg)
{
uint64_t v;
const struct dummy_offset *dft;
dft = arg;
v = dft->u64;
v += dft->u32;
v += dft->u16;
v += dft->u8;
return cmp_res(__func__, v, rc, dft, dft, sizeof(*dft));
}
/* load immediate test-cases */
static const struct ebpf_insn test_ldimm1_prog[] = {
{
.code = (BPF_LD | BPF_IMM | EBPF_DW),
.dst_reg = EBPF_REG_0,
.imm = (uint32_t)TEST_IMM_1,
},
{
.imm = TEST_IMM_1 >> 32,
},
{
.code = (BPF_LD | BPF_IMM | EBPF_DW),
.dst_reg = EBPF_REG_3,
.imm = (uint32_t)TEST_IMM_2,
},
{
.imm = TEST_IMM_2 >> 32,
},
{
.code = (BPF_LD | BPF_IMM | EBPF_DW),
.dst_reg = EBPF_REG_5,
.imm = (uint32_t)TEST_IMM_3,
},
{
.imm = TEST_IMM_3 >> 32,
},
{
.code = (BPF_LD | BPF_IMM | EBPF_DW),
.dst_reg = EBPF_REG_7,
.imm = (uint32_t)TEST_IMM_4,
},
{
.imm = TEST_IMM_4 >> 32,
},
{
.code = (BPF_LD | BPF_IMM | EBPF_DW),
.dst_reg = EBPF_REG_9,
.imm = (uint32_t)TEST_IMM_5,
},
{
.imm = TEST_IMM_5 >> 32,
},
/* return sum */
{
.code = (EBPF_ALU64 | BPF_ADD | BPF_X),
.dst_reg = EBPF_REG_0,
.src_reg = EBPF_REG_3,
},
{
.code = (EBPF_ALU64 | BPF_ADD | BPF_X),
.dst_reg = EBPF_REG_0,
.src_reg = EBPF_REG_5,
},
{
.code = (EBPF_ALU64 | BPF_ADD | BPF_X),
.dst_reg = EBPF_REG_0,
.src_reg = EBPF_REG_7,
},
{
.code = (EBPF_ALU64 | BPF_ADD | BPF_X),
.dst_reg = EBPF_REG_0,
.src_reg = EBPF_REG_9,
},
{
.code = (BPF_JMP | EBPF_EXIT),
},
};
static int
test_ldimm1_check(uint64_t rc, const void *arg)
{
uint64_t v1, v2;
v1 = TEST_IMM_1;
v2 = TEST_IMM_2;
v1 += v2;
v2 = TEST_IMM_3;
v1 += v2;
v2 = TEST_IMM_4;
v1 += v2;
v2 = TEST_IMM_5;
v1 += v2;
return cmp_res(__func__, v1, rc, arg, arg, 0);
}
/* alu mul test-cases */
static const struct ebpf_insn test_mul1_prog[] = {
{
.code = (BPF_LDX | BPF_MEM | BPF_W),
.dst_reg = EBPF_REG_2,
.src_reg = EBPF_REG_1,
.off = offsetof(struct dummy_vect8, in[0].u32),
},
{
.code = (BPF_LDX | BPF_MEM | EBPF_DW),
.dst_reg = EBPF_REG_3,
.src_reg = EBPF_REG_1,
.off = offsetof(struct dummy_vect8, in[1].u64),
},
{
.code = (BPF_LDX | BPF_MEM | BPF_W),
.dst_reg = EBPF_REG_4,
.src_reg = EBPF_REG_1,
.off = offsetof(struct dummy_vect8, in[2].u32),
},
{
.code = (BPF_ALU | BPF_MUL | BPF_K),
.dst_reg = EBPF_REG_2,
.imm = TEST_MUL_1,
},
{
.code = (EBPF_ALU64 | BPF_MUL | BPF_K),
.dst_reg = EBPF_REG_3,
.imm = TEST_MUL_2,
},
{
.code = (BPF_ALU | BPF_MUL | BPF_X),
.dst_reg = EBPF_REG_4,
.src_reg = EBPF_REG_2,
},
{
.code = (EBPF_ALU64 | BPF_MUL | BPF_X),
.dst_reg = EBPF_REG_4,
.src_reg = EBPF_REG_3,
},
{
.code = (BPF_STX | BPF_MEM | EBPF_DW),
.dst_reg = EBPF_REG_1,
.src_reg = EBPF_REG_2,
.off = offsetof(struct dummy_vect8, out[0].u64),
},
{
.code = (BPF_STX | BPF_MEM | EBPF_DW),
.dst_reg = EBPF_REG_1,
.src_reg = EBPF_REG_3,
.off = offsetof(struct dummy_vect8, out[1].u64),
},
{
.code = (BPF_STX | BPF_MEM | EBPF_DW),
.dst_reg = EBPF_REG_1,
.src_reg = EBPF_REG_4,
.off = offsetof(struct dummy_vect8, out[2].u64),
},
/* return 1 */
{
.code = (BPF_ALU | EBPF_MOV | BPF_K),
.dst_reg = EBPF_REG_0,
.imm = 1,
},
{
.code = (BPF_JMP | EBPF_EXIT),
},
};
static void
test_mul1_prepare(void *arg)
{
struct dummy_vect8 *dv;
uint64_t v;
dv = arg;
v = rte_rand();
memset(dv, 0, sizeof(*dv));
dv->in[0].u32 = v;
dv->in[1].u64 = v << 12 | v >> 6;
dv->in[2].u32 = -v;
}
static int
test_mul1_check(uint64_t rc, const void *arg)
{
uint64_t r2, r3, r4;
const struct dummy_vect8 *dvt;
struct dummy_vect8 dve;
dvt = arg;
memset(&dve, 0, sizeof(dve));
r2 = dvt->in[0].u32;
r3 = dvt->in[1].u64;
r4 = dvt->in[2].u32;
r2 = (uint32_t)r2 * TEST_MUL_1;
r3 *= TEST_MUL_2;
r4 = (uint32_t)(r4 * r2);
r4 *= r3;
dve.out[0].u64 = r2;
dve.out[1].u64 = r3;
dve.out[2].u64 = r4;
return cmp_res(__func__, 1, rc, dve.out, dvt->out, sizeof(dve.out));
}
/* alu shift test-cases */
static const struct ebpf_insn test_shift1_prog[] = {
{
.code = (BPF_LDX | BPF_MEM | BPF_W),
.dst_reg = EBPF_REG_2,
.src_reg = EBPF_REG_1,
.off = offsetof(struct dummy_vect8, in[0].u32),
},
{
.code = (BPF_LDX | BPF_MEM | EBPF_DW),
.dst_reg = EBPF_REG_3,
.src_reg = EBPF_REG_1,
.off = offsetof(struct dummy_vect8, in[1].u64),
},
{
.code = (BPF_LDX | BPF_MEM | BPF_W),
.dst_reg = EBPF_REG_4,
.src_reg = EBPF_REG_1,
.off = offsetof(struct dummy_vect8, in[2].u32),
},
{
.code = (BPF_ALU | BPF_LSH | BPF_K),
.dst_reg = EBPF_REG_2,
.imm = TEST_SHIFT_1,
},
{
.code = (EBPF_ALU64 | EBPF_ARSH | BPF_K),
.dst_reg = EBPF_REG_3,
.imm = TEST_SHIFT_2,
},
{
.code = (BPF_STX | BPF_MEM | EBPF_DW),
.dst_reg = EBPF_REG_1,
.src_reg = EBPF_REG_2,
.off = offsetof(struct dummy_vect8, out[0].u64),
},
{
.code = (BPF_STX | BPF_MEM | EBPF_DW),
.dst_reg = EBPF_REG_1,
.src_reg = EBPF_REG_3,
.off = offsetof(struct dummy_vect8, out[1].u64),
},
{
.code = (BPF_ALU | BPF_AND | BPF_K),
.dst_reg = EBPF_REG_4,
.imm = TEST_SHIFT64_MASK,
},
{
.code = (EBPF_ALU64 | BPF_LSH | BPF_X),
.dst_reg = EBPF_REG_3,
.src_reg = EBPF_REG_4,
},
{
.code = (BPF_ALU | BPF_AND | BPF_K),
.dst_reg = EBPF_REG_4,
.imm = TEST_SHIFT32_MASK,
},
{
.code = (BPF_ALU | BPF_RSH | BPF_X),
.dst_reg = EBPF_REG_2,
.src_reg = EBPF_REG_4,
},
{
.code = (BPF_STX | BPF_MEM | EBPF_DW),
.dst_reg = EBPF_REG_1,
.src_reg = EBPF_REG_2,
.off = offsetof(struct dummy_vect8, out[2].u64),
},
{
.code = (BPF_STX | BPF_MEM | EBPF_DW),
.dst_reg = EBPF_REG_1,
.src_reg = EBPF_REG_3,
.off = offsetof(struct dummy_vect8, out[3].u64),
},
{
.code = (BPF_LDX | BPF_MEM | BPF_W),
.dst_reg = EBPF_REG_2,
.src_reg = EBPF_REG_1,
.off = offsetof(struct dummy_vect8, in[0].u32),
},
{
.code = (BPF_LDX | BPF_MEM | EBPF_DW),
.dst_reg = EBPF_REG_3,
.src_reg = EBPF_REG_1,
.off = offsetof(struct dummy_vect8, in[1].u64),
},
{
.code = (BPF_LDX | BPF_MEM | BPF_W),
.dst_reg = EBPF_REG_4,
.src_reg = EBPF_REG_1,
.off = offsetof(struct dummy_vect8, in[2].u32),
},
{
.code = (BPF_ALU | BPF_AND | BPF_K),
.dst_reg = EBPF_REG_2,
.imm = TEST_SHIFT64_MASK,
},
{
.code = (EBPF_ALU64 | EBPF_ARSH | BPF_X),
.dst_reg = EBPF_REG_3,
.src_reg = EBPF_REG_2,
},
{
.code = (BPF_ALU | BPF_AND | BPF_K),
.dst_reg = EBPF_REG_2,
.imm = TEST_SHIFT32_MASK,
},
{
.code = (BPF_ALU | BPF_LSH | BPF_X),
.dst_reg = EBPF_REG_4,
.src_reg = EBPF_REG_2,
},
{
.code = (BPF_STX | BPF_MEM | EBPF_DW),
.dst_reg = EBPF_REG_1,
.src_reg = EBPF_REG_4,
.off = offsetof(struct dummy_vect8, out[4].u64),
},
{
.code = (BPF_STX | BPF_MEM | EBPF_DW),
.dst_reg = EBPF_REG_1,
.src_reg = EBPF_REG_3,
.off = offsetof(struct dummy_vect8, out[5].u64),
},
/* return 1 */
{
.code = (BPF_ALU | EBPF_MOV | BPF_K),
.dst_reg = EBPF_REG_0,
.imm = 1,
},
{
.code = (BPF_JMP | EBPF_EXIT),
},
};
static void
test_shift1_prepare(void *arg)
{
struct dummy_vect8 *dv;
uint64_t v;
dv = arg;
v = rte_rand();
memset(dv, 0, sizeof(*dv));
dv->in[0].u32 = v;
dv->in[1].u64 = v << 12 | v >> 6;
dv->in[2].u32 = (-v ^ 5);
}
static int
test_shift1_check(uint64_t rc, const void *arg)
{
uint64_t r2, r3, r4;
const struct dummy_vect8 *dvt;
struct dummy_vect8 dve;
dvt = arg;
memset(&dve, 0, sizeof(dve));
r2 = dvt->in[0].u32;
r3 = dvt->in[1].u64;
r4 = dvt->in[2].u32;
r2 = (uint32_t)r2 << TEST_SHIFT_1;
r3 = (int64_t)r3 >> TEST_SHIFT_2;
dve.out[0].u64 = r2;
dve.out[1].u64 = r3;
r4 &= TEST_SHIFT64_MASK;
r3 <<= r4;
r4 &= TEST_SHIFT32_MASK;
r2 = (uint32_t)r2 >> r4;
dve.out[2].u64 = r2;
dve.out[3].u64 = r3;
r2 = dvt->in[0].u32;
r3 = dvt->in[1].u64;
r4 = dvt->in[2].u32;
r2 &= TEST_SHIFT64_MASK;
r3 = (int64_t)r3 >> r2;
r2 &= TEST_SHIFT32_MASK;
r4 = (uint32_t)r4 << r2;
dve.out[4].u64 = r4;
dve.out[5].u64 = r3;
return cmp_res(__func__, 1, rc, dve.out, dvt->out, sizeof(dve.out));
}
/* jmp test-cases */
static const struct ebpf_insn test_jump1_prog[] = {
[0] = {
.code = (BPF_ALU | EBPF_MOV | BPF_K),
.dst_reg = EBPF_REG_0,
.imm = 0,
},
[1] = {
.code = (BPF_LDX | BPF_MEM | BPF_W),
.dst_reg = EBPF_REG_2,
.src_reg = EBPF_REG_1,
.off = offsetof(struct dummy_vect8, in[0].u32),
},
[2] = {
.code = (BPF_LDX | BPF_MEM | EBPF_DW),
.dst_reg = EBPF_REG_3,
.src_reg = EBPF_REG_1,
.off = offsetof(struct dummy_vect8, in[0].u64),
},
[3] = {
.code = (BPF_LDX | BPF_MEM | BPF_W),
.dst_reg = EBPF_REG_4,
.src_reg = EBPF_REG_1,
.off = offsetof(struct dummy_vect8, in[1].u32),
},
[4] = {
.code = (BPF_LDX | BPF_MEM | EBPF_DW),
.dst_reg = EBPF_REG_5,
.src_reg = EBPF_REG_1,
.off = offsetof(struct dummy_vect8, in[1].u64),
},
[5] = {
.code = (BPF_JMP | BPF_JEQ | BPF_K),
.dst_reg = EBPF_REG_2,
.imm = TEST_JCC_1,
.off = 8,
},
[6] = {
.code = (BPF_JMP | EBPF_JSLE | BPF_K),
.dst_reg = EBPF_REG_3,
.imm = TEST_JCC_2,
.off = 9,
},
[7] = {
.code = (BPF_JMP | BPF_JGT | BPF_K),
.dst_reg = EBPF_REG_4,
.imm = TEST_JCC_3,
.off = 10,
},
[8] = {
.code = (BPF_JMP | BPF_JSET | BPF_K),
.dst_reg = EBPF_REG_5,
.imm = TEST_JCC_4,
.off = 11,
},
[9] = {
.code = (BPF_JMP | EBPF_JNE | BPF_X),
.dst_reg = EBPF_REG_2,
.src_reg = EBPF_REG_3,
.off = 12,
},
[10] = {
.code = (BPF_JMP | EBPF_JSGT | BPF_X),
.dst_reg = EBPF_REG_2,
.src_reg = EBPF_REG_4,
.off = 13,
},
[11] = {
.code = (BPF_JMP | EBPF_JLE | BPF_X),
.dst_reg = EBPF_REG_2,
.src_reg = EBPF_REG_5,
.off = 14,
},
[12] = {
.code = (BPF_JMP | BPF_JSET | BPF_X),
.dst_reg = EBPF_REG_3,
.src_reg = EBPF_REG_5,
.off = 15,
},
[13] = {
.code = (BPF_JMP | EBPF_EXIT),
},
[14] = {
.code = (EBPF_ALU64 | BPF_OR | BPF_K),
.dst_reg = EBPF_REG_0,
.imm = 0x1,
},
[15] = {
.code = (BPF_JMP | BPF_JA),
.off = -10,
},
[16] = {
.code = (EBPF_ALU64 | BPF_OR | BPF_K),
.dst_reg = EBPF_REG_0,
.imm = 0x2,
},
[17] = {
.code = (BPF_JMP | BPF_JA),
.off = -11,
},
[18] = {
.code = (EBPF_ALU64 | BPF_OR | BPF_K),
.dst_reg = EBPF_REG_0,
.imm = 0x4,
},
[19] = {
.code = (BPF_JMP | BPF_JA),
.off = -12,
},
[20] = {
.code = (EBPF_ALU64 | BPF_OR | BPF_K),
.dst_reg = EBPF_REG_0,
.imm = 0x8,
},
[21] = {
.code = (BPF_JMP | BPF_JA),
.off = -13,
},
[22] = {
.code = (EBPF_ALU64 | BPF_OR | BPF_K),
.dst_reg = EBPF_REG_0,
.imm = 0x10,
},
[23] = {
.code = (BPF_JMP | BPF_JA),
.off = -14,
},
[24] = {
.code = (EBPF_ALU64 | BPF_OR | BPF_K),
.dst_reg = EBPF_REG_0,
.imm = 0x20,
},
[25] = {
.code = (BPF_JMP | BPF_JA),
.off = -15,
},
[26] = {
.code = (EBPF_ALU64 | BPF_OR | BPF_K),
.dst_reg = EBPF_REG_0,
.imm = 0x40,
},
[27] = {
.code = (BPF_JMP | BPF_JA),
.off = -16,
},
[28] = {
.code = (EBPF_ALU64 | BPF_OR | BPF_K),
.dst_reg = EBPF_REG_0,
.imm = 0x80,
},
[29] = {
.code = (BPF_JMP | BPF_JA),
.off = -17,
},
};
static void
test_jump1_prepare(void *arg)
{
struct dummy_vect8 *dv;
uint64_t v1, v2;
dv = arg;
v1 = rte_rand();
v2 = rte_rand();
memset(dv, 0, sizeof(*dv));
dv->in[0].u64 = v1;
dv->in[1].u64 = v2;
dv->in[0].u32 = (v1 << 12) + (v2 >> 6);
dv->in[1].u32 = (v2 << 12) - (v1 >> 6);
}
static int
test_jump1_check(uint64_t rc, const void *arg)
{
uint64_t r2, r3, r4, r5, rv;
const struct dummy_vect8 *dvt;
dvt = arg;
rv = 0;
r2 = dvt->in[0].u32;
r3 = dvt->in[0].u64;
r4 = dvt->in[1].u32;
r5 = dvt->in[1].u64;
if (r2 == TEST_JCC_1)
rv |= 0x1;
if ((int64_t)r3 <= TEST_JCC_2)
rv |= 0x2;
if (r4 > TEST_JCC_3)
rv |= 0x4;
if (r5 & TEST_JCC_4)
rv |= 0x8;
if (r2 != r3)
rv |= 0x10;
if ((int64_t)r2 > (int64_t)r4)
rv |= 0x20;
if (r2 <= r5)
rv |= 0x40;
if (r3 & r5)
rv |= 0x80;
return cmp_res(__func__, rv, rc, &rv, &rc, sizeof(rv));
}
/* Jump test case - check ip4_dest in particular subnet */
static const struct ebpf_insn test_jump2_prog[] = {
[0] = {
.code = (EBPF_ALU64 | EBPF_MOV | BPF_K),
.dst_reg = EBPF_REG_2,
.imm = 0xe,
},
[1] = {
.code = (BPF_LDX | BPF_MEM | BPF_H),
.dst_reg = EBPF_REG_3,
.src_reg = EBPF_REG_1,
.off = 12,
},
[2] = {
.code = (BPF_JMP | EBPF_JNE | BPF_K),
.dst_reg = EBPF_REG_3,
.off = 2,
.imm = 0x81,
},
[3] = {
.code = (EBPF_ALU64 | EBPF_MOV | BPF_K),
.dst_reg = EBPF_REG_2,
.imm = 0x12,
},
[4] = {
.code = (BPF_LDX | BPF_MEM | BPF_H),
.dst_reg = EBPF_REG_3,
.src_reg = EBPF_REG_1,
.off = 16,
},
[5] = {
.code = (EBPF_ALU64 | BPF_AND | BPF_K),
.dst_reg = EBPF_REG_3,
.imm = 0xffff,
},
[6] = {
.code = (BPF_JMP | EBPF_JNE | BPF_K),
.dst_reg = EBPF_REG_3,
.off = 9,
.imm = 0x8,
},
[7] = {
.code = (EBPF_ALU64 | BPF_ADD | BPF_X),
.dst_reg = EBPF_REG_1,
.src_reg = EBPF_REG_2,
},
[8] = {
.code = (EBPF_ALU64 | EBPF_MOV | BPF_K),
.dst_reg = EBPF_REG_0,
.imm = 0,
},
[9] = {
.code = (BPF_LDX | BPF_MEM | BPF_W),
.dst_reg = EBPF_REG_1,
.src_reg = EBPF_REG_1,
.off = 16,
},
[10] = {
.code = (BPF_ALU | EBPF_MOV | BPF_K),
.dst_reg = EBPF_REG_3,
.imm = TEST_NETMASK,
},
[11] = {
.code = (BPF_ALU | EBPF_END | EBPF_TO_BE),
.dst_reg = EBPF_REG_3,
.imm = sizeof(uint32_t) * CHAR_BIT,
},
[12] = {
.code = (BPF_ALU | BPF_AND | BPF_X),
.dst_reg = EBPF_REG_1,
.src_reg = EBPF_REG_3,
},
[13] = {
.code = (BPF_ALU | EBPF_MOV | BPF_K),
.dst_reg = EBPF_REG_3,
.imm = TEST_SUBNET,
},
[14] = {
.code = (BPF_ALU | EBPF_END | EBPF_TO_BE),
.dst_reg = EBPF_REG_3,
.imm = sizeof(uint32_t) * CHAR_BIT,
},
[15] = {
.code = (BPF_JMP | BPF_JEQ | BPF_X),
.dst_reg = EBPF_REG_1,
.src_reg = EBPF_REG_3,
.off = 1,
},
[16] = {
.code = (EBPF_ALU64 | EBPF_MOV | BPF_K),
.dst_reg = EBPF_REG_0,
.imm = -1,
},
[17] = {
.code = (BPF_JMP | EBPF_EXIT),
},
};
/* Preparing a vlan packet */
static void
test_jump2_prepare(void *arg)
{
struct dummy_net *dn;
dn = arg;
memset(dn, 0, sizeof(*dn));
/*
* Initialize ether header.
*/
rte_ether_addr_copy((struct rte_ether_addr *)dst_mac,
&dn->eth_hdr.dst_addr);
rte_ether_addr_copy((struct rte_ether_addr *)src_mac,
&dn->eth_hdr.src_addr);
dn->eth_hdr.ether_type = rte_cpu_to_be_16(RTE_ETHER_TYPE_VLAN);
/*
* Initialize vlan header.
*/
dn->vlan_hdr.eth_proto = rte_cpu_to_be_16(RTE_ETHER_TYPE_IPV4);
dn->vlan_hdr.vlan_tci = 32;
/*
* Initialize IP header.
*/
dn->ip_hdr.version_ihl = 0x45; /*IP_VERSION | IP_HDRLEN*/
dn->ip_hdr.time_to_live = 64; /* IP_DEFTTL */
dn->ip_hdr.next_proto_id = IPPROTO_TCP;
dn->ip_hdr.packet_id = rte_cpu_to_be_16(0x463c);
dn->ip_hdr.total_length = rte_cpu_to_be_16(60);
dn->ip_hdr.src_addr = rte_cpu_to_be_32(ip_src_addr);
dn->ip_hdr.dst_addr = rte_cpu_to_be_32(ip_dst_addr);
}
static int
test_jump2_check(uint64_t rc, const void *arg)
{
const struct rte_ether_hdr *eth_hdr = arg;
const struct rte_ipv4_hdr *ipv4_hdr;
const void *next = eth_hdr;
uint16_t eth_type;
uint64_t v = -1;
if (eth_hdr->ether_type == htons(0x8100)) {
const struct rte_vlan_hdr *vlan_hdr =
(const void *)(eth_hdr + 1);
eth_type = vlan_hdr->eth_proto;
next = vlan_hdr + 1;
} else {
eth_type = eth_hdr->ether_type;
next = eth_hdr + 1;
}
if (eth_type == htons(0x0800)) {
ipv4_hdr = next;
if ((ipv4_hdr->dst_addr & rte_cpu_to_be_32(TEST_NETMASK)) ==
rte_cpu_to_be_32(TEST_SUBNET)) {
v = 0;
}
}
return cmp_res(__func__, v, rc, arg, arg, sizeof(arg));
}
/* alu (add, sub, and, or, xor, neg) test-cases */
static const struct ebpf_insn test_alu1_prog[] = {
{
.code = (BPF_LDX | BPF_MEM | BPF_W),
.dst_reg = EBPF_REG_2,
.src_reg = EBPF_REG_1,
.off = offsetof(struct dummy_vect8, in[0].u32),
},
{
.code = (BPF_LDX | BPF_MEM | EBPF_DW),
.dst_reg = EBPF_REG_3,
.src_reg = EBPF_REG_1,
.off = offsetof(struct dummy_vect8, in[0].u64),
},
{
.code = (BPF_LDX | BPF_MEM | BPF_W),
.dst_reg = EBPF_REG_4,
.src_reg = EBPF_REG_1,
.off = offsetof(struct dummy_vect8, in[1].u32),
},
{
.code = (BPF_LDX | BPF_MEM | EBPF_DW),
.dst_reg = EBPF_REG_5,
.src_reg = EBPF_REG_1,
.off = offsetof(struct dummy_vect8, in[1].u64),
},
{
.code = (BPF_ALU | BPF_AND | BPF_K),
.dst_reg = EBPF_REG_2,
.imm = TEST_FILL_1,
},
{
.code = (EBPF_ALU64 | BPF_OR | BPF_K),
.dst_reg = EBPF_REG_3,
.imm = TEST_FILL_1,
},
{
.code = (BPF_ALU | BPF_XOR | BPF_K),
.dst_reg = EBPF_REG_4,
.imm = TEST_FILL_1,
},
{
.code = (EBPF_ALU64 | BPF_ADD | BPF_K),
.dst_reg = EBPF_REG_5,
.imm = TEST_FILL_1,
},
{
.code = (BPF_STX | BPF_MEM | EBPF_DW),
.dst_reg = EBPF_REG_1,
.src_reg = EBPF_REG_2,
.off = offsetof(struct dummy_vect8, out[0].u64),
},
{
.code = (BPF_STX | BPF_MEM | EBPF_DW),
.dst_reg = EBPF_REG_1,
.src_reg = EBPF_REG_3,
.off = offsetof(struct dummy_vect8, out[1].u64),
},
{
.code = (BPF_STX | BPF_MEM | EBPF_DW),
.dst_reg = EBPF_REG_1,
.src_reg = EBPF_REG_4,
.off = offsetof(struct dummy_vect8, out[2].u64),
},
{
.code = (BPF_STX | BPF_MEM | EBPF_DW),
.dst_reg = EBPF_REG_1,
.src_reg = EBPF_REG_5,
.off = offsetof(struct dummy_vect8, out[3].u64),
},
{
.code = (BPF_ALU | BPF_OR | BPF_X),
.dst_reg = EBPF_REG_2,
.src_reg = EBPF_REG_3,
},
{
.code = (EBPF_ALU64 | BPF_XOR | BPF_X),
.dst_reg = EBPF_REG_3,
.src_reg = EBPF_REG_4,
},
{
.code = (BPF_ALU | BPF_SUB | BPF_X),
.dst_reg = EBPF_REG_4,
.src_reg = EBPF_REG_5,
},
{
.code = (EBPF_ALU64 | BPF_AND | BPF_X),
.dst_reg = EBPF_REG_5,
.src_reg = EBPF_REG_2,
},
{
.code = (BPF_STX | BPF_MEM | EBPF_DW),
.dst_reg = EBPF_REG_1,
.src_reg = EBPF_REG_2,
.off = offsetof(struct dummy_vect8, out[4].u64),
},
{
.code = (BPF_STX | BPF_MEM | EBPF_DW),
.dst_reg = EBPF_REG_1,
.src_reg = EBPF_REG_3,
.off = offsetof(struct dummy_vect8, out[5].u64),
},
{
.code = (BPF_STX | BPF_MEM | EBPF_DW),
.dst_reg = EBPF_REG_1,
.src_reg = EBPF_REG_4,
.off = offsetof(struct dummy_vect8, out[6].u64),
},
{
.code = (BPF_STX | BPF_MEM | EBPF_DW),
.dst_reg = EBPF_REG_1,
.src_reg = EBPF_REG_5,
.off = offsetof(struct dummy_vect8, out[7].u64),
},
/* return (-r2 + (-r3)) */
{
.code = (BPF_ALU | BPF_NEG),
.dst_reg = EBPF_REG_2,
},
{
.code = (EBPF_ALU64 | BPF_NEG),
.dst_reg = EBPF_REG_3,
},
{
.code = (EBPF_ALU64 | BPF_ADD | BPF_X),
.dst_reg = EBPF_REG_2,
.src_reg = EBPF_REG_3,
},
{
.code = (EBPF_ALU64 | EBPF_MOV | BPF_X),
.dst_reg = EBPF_REG_0,
.src_reg = EBPF_REG_2,
},
{
.code = (BPF_JMP | EBPF_EXIT),
},
};
static int
test_alu1_check(uint64_t rc, const void *arg)
{
uint64_t r2, r3, r4, r5, rv;
const struct dummy_vect8 *dvt;
struct dummy_vect8 dve;
dvt = arg;
memset(&dve, 0, sizeof(dve));
r2 = dvt->in[0].u32;
r3 = dvt->in[0].u64;
r4 = dvt->in[1].u32;
r5 = dvt->in[1].u64;
r2 = (uint32_t)r2 & TEST_FILL_1;
r3 |= (int32_t) TEST_FILL_1;
r4 = (uint32_t)r4 ^ TEST_FILL_1;
r5 += (int32_t)TEST_FILL_1;
dve.out[0].u64 = r2;
dve.out[1].u64 = r3;
dve.out[2].u64 = r4;
dve.out[3].u64 = r5;
r2 = (uint32_t)r2 | (uint32_t)r3;
r3 ^= r4;
r4 = (uint32_t)r4 - (uint32_t)r5;
r5 &= r2;
dve.out[4].u64 = r2;
dve.out[5].u64 = r3;
dve.out[6].u64 = r4;
dve.out[7].u64 = r5;
r2 = -(int32_t)r2;
rv = (uint32_t)r2;
r3 = -r3;
rv += r3;
return cmp_res(__func__, rv, rc, dve.out, dvt->out, sizeof(dve.out));
}
/* endianness conversions (BE->LE/LE->BE) test-cases */
static const struct ebpf_insn test_bele1_prog[] = {
{
.code = (BPF_LDX | BPF_MEM | BPF_H),
.dst_reg = EBPF_REG_2,
.src_reg = EBPF_REG_1,
.off = offsetof(struct dummy_vect8, in[0].u16),
},
{
.code = (BPF_LDX | BPF_MEM | BPF_W),
.dst_reg = EBPF_REG_3,
.src_reg = EBPF_REG_1,
.off = offsetof(struct dummy_vect8, in[0].u32),
},
{
.code = (BPF_LDX | BPF_MEM | EBPF_DW),
.dst_reg = EBPF_REG_4,
.src_reg = EBPF_REG_1,
.off = offsetof(struct dummy_vect8, in[0].u64),
},
{
.code = (BPF_ALU | EBPF_END | EBPF_TO_BE),
.dst_reg = EBPF_REG_2,
.imm = sizeof(uint16_t) * CHAR_BIT,
},
{
.code = (BPF_ALU | EBPF_END | EBPF_TO_BE),
.dst_reg = EBPF_REG_3,
.imm = sizeof(uint32_t) * CHAR_BIT,
},
{
.code = (BPF_ALU | EBPF_END | EBPF_TO_BE),
.dst_reg = EBPF_REG_4,
.imm = sizeof(uint64_t) * CHAR_BIT,
},
{
.code = (BPF_STX | BPF_MEM | EBPF_DW),
.dst_reg = EBPF_REG_1,
.src_reg = EBPF_REG_2,
.off = offsetof(struct dummy_vect8, out[0].u64),
},
{
.code = (BPF_STX | BPF_MEM | EBPF_DW),
.dst_reg = EBPF_REG_1,
.src_reg = EBPF_REG_3,
.off = offsetof(struct dummy_vect8, out[1].u64),
},
{
.code = (BPF_STX | BPF_MEM | EBPF_DW),
.dst_reg = EBPF_REG_1,
.src_reg = EBPF_REG_4,
.off = offsetof(struct dummy_vect8, out[2].u64),
},
{
.code = (BPF_LDX | BPF_MEM | BPF_H),
.dst_reg = EBPF_REG_2,
.src_reg = EBPF_REG_1,
.off = offsetof(struct dummy_vect8, in[0].u16),
},
{
.code = (BPF_LDX | BPF_MEM | BPF_W),
.dst_reg = EBPF_REG_3,
.src_reg = EBPF_REG_1,
.off = offsetof(struct dummy_vect8, in[0].u32),
},
{
.code = (BPF_LDX | BPF_MEM | EBPF_DW),
.dst_reg = EBPF_REG_4,
.src_reg = EBPF_REG_1,
.off = offsetof(struct dummy_vect8, in[0].u64),
},
{
.code = (BPF_ALU | EBPF_END | EBPF_TO_LE),
.dst_reg = EBPF_REG_2,
.imm = sizeof(uint16_t) * CHAR_BIT,
},
{
.code = (BPF_ALU | EBPF_END | EBPF_TO_LE),
.dst_reg = EBPF_REG_3,
.imm = sizeof(uint32_t) * CHAR_BIT,
},
{
.code = (BPF_ALU | EBPF_END | EBPF_TO_LE),
.dst_reg = EBPF_REG_4,
.imm = sizeof(uint64_t) * CHAR_BIT,
},
{
.code = (BPF_STX | BPF_MEM | EBPF_DW),
.dst_reg = EBPF_REG_1,
.src_reg = EBPF_REG_2,
.off = offsetof(struct dummy_vect8, out[3].u64),
},
{
.code = (BPF_STX | BPF_MEM | EBPF_DW),
.dst_reg = EBPF_REG_1,
.src_reg = EBPF_REG_3,
.off = offsetof(struct dummy_vect8, out[4].u64),
},
{
.code = (BPF_STX | BPF_MEM | EBPF_DW),
.dst_reg = EBPF_REG_1,
.src_reg = EBPF_REG_4,
.off = offsetof(struct dummy_vect8, out[5].u64),
},
/* return 1 */
{
.code = (BPF_ALU | EBPF_MOV | BPF_K),
.dst_reg = EBPF_REG_0,
.imm = 1,
},
{
.code = (BPF_JMP | EBPF_EXIT),
},
};
static void
test_bele1_prepare(void *arg)
{
struct dummy_vect8 *dv;
dv = arg;
memset(dv, 0, sizeof(*dv));
dv->in[0].u64 = rte_rand();
dv->in[0].u32 = dv->in[0].u64;
dv->in[0].u16 = dv->in[0].u64;
}
static int
test_bele1_check(uint64_t rc, const void *arg)
{
uint64_t r2, r3, r4;
const struct dummy_vect8 *dvt;
struct dummy_vect8 dve;
dvt = arg;
memset(&dve, 0, sizeof(dve));
r2 = dvt->in[0].u16;
r3 = dvt->in[0].u32;
r4 = dvt->in[0].u64;
r2 = rte_cpu_to_be_16(r2);
r3 = rte_cpu_to_be_32(r3);
r4 = rte_cpu_to_be_64(r4);
dve.out[0].u64 = r2;
dve.out[1].u64 = r3;
dve.out[2].u64 = r4;
r2 = dvt->in[0].u16;
r3 = dvt->in[0].u32;
r4 = dvt->in[0].u64;
r2 = rte_cpu_to_le_16(r2);
r3 = rte_cpu_to_le_32(r3);
r4 = rte_cpu_to_le_64(r4);
dve.out[3].u64 = r2;
dve.out[4].u64 = r3;
dve.out[5].u64 = r4;
return cmp_res(__func__, 1, rc, dve.out, dvt->out, sizeof(dve.out));
}
/* atomic add test-cases */
static const struct ebpf_insn test_xadd1_prog[] = {
{
.code = (EBPF_ALU64 | EBPF_MOV | BPF_K),
.dst_reg = EBPF_REG_2,
.imm = 1,
},
{
.code = (BPF_STX | EBPF_XADD | BPF_W),
.dst_reg = EBPF_REG_1,
.src_reg = EBPF_REG_2,
.off = offsetof(struct dummy_offset, u32),
},
{
.code = (BPF_STX | EBPF_XADD | EBPF_DW),
.dst_reg = EBPF_REG_1,
.src_reg = EBPF_REG_2,
.off = offsetof(struct dummy_offset, u64),
},
{
.code = (EBPF_ALU64 | EBPF_MOV | BPF_K),
.dst_reg = EBPF_REG_3,
.imm = -1,
},
{
.code = (BPF_STX | EBPF_XADD | BPF_W),
.dst_reg = EBPF_REG_1,
.src_reg = EBPF_REG_3,
.off = offsetof(struct dummy_offset, u32),
},
{
.code = (BPF_STX | EBPF_XADD | EBPF_DW),
.dst_reg = EBPF_REG_1,
.src_reg = EBPF_REG_3,
.off = offsetof(struct dummy_offset, u64),
},
{
.code = (EBPF_ALU64 | EBPF_MOV | BPF_K),
.dst_reg = EBPF_REG_4,
.imm = TEST_FILL_1,
},
{
.code = (BPF_STX | EBPF_XADD | BPF_W),
.dst_reg = EBPF_REG_1,
.src_reg = EBPF_REG_4,
.off = offsetof(struct dummy_offset, u32),
},
{
.code = (BPF_STX | EBPF_XADD | EBPF_DW),
.dst_reg = EBPF_REG_1,
.src_reg = EBPF_REG_4,
.off = offsetof(struct dummy_offset, u64),
},
{
.code = (EBPF_ALU64 | EBPF_MOV | BPF_K),
.dst_reg = EBPF_REG_5,
.imm = TEST_MUL_1,
},
{
.code = (BPF_STX | EBPF_XADD | BPF_W),
.dst_reg = EBPF_REG_1,
.src_reg = EBPF_REG_5,
.off = offsetof(struct dummy_offset, u32),
},
{
.code = (BPF_STX | EBPF_XADD | EBPF_DW),
.dst_reg = EBPF_REG_1,
.src_reg = EBPF_REG_5,
.off = offsetof(struct dummy_offset, u64),
},
{
.code = (EBPF_ALU64 | EBPF_MOV | BPF_K),
.dst_reg = EBPF_REG_6,
.imm = TEST_MUL_2,
},
{
.code = (BPF_STX | EBPF_XADD | BPF_W),
.dst_reg = EBPF_REG_1,
.src_reg = EBPF_REG_6,
.off = offsetof(struct dummy_offset, u32),
},
{
.code = (BPF_STX | EBPF_XADD | EBPF_DW),
.dst_reg = EBPF_REG_1,
.src_reg = EBPF_REG_6,
.off = offsetof(struct dummy_offset, u64),
},
{
.code = (EBPF_ALU64 | EBPF_MOV | BPF_K),
.dst_reg = EBPF_REG_7,
.imm = TEST_JCC_2,
},
{
.code = (BPF_STX | EBPF_XADD | BPF_W),
.dst_reg = EBPF_REG_1,
.src_reg = EBPF_REG_7,
.off = offsetof(struct dummy_offset, u32),
},
{
.code = (BPF_STX | EBPF_XADD | EBPF_DW),
.dst_reg = EBPF_REG_1,
.src_reg = EBPF_REG_7,
.off = offsetof(struct dummy_offset, u64),
},
{
.code = (EBPF_ALU64 | EBPF_MOV | BPF_K),
.dst_reg = EBPF_REG_8,
.imm = TEST_JCC_3,
},
{
.code = (BPF_STX | EBPF_XADD | BPF_W),
.dst_reg = EBPF_REG_1,
.src_reg = EBPF_REG_8,
.off = offsetof(struct dummy_offset, u32),
},
{
.code = (BPF_STX | EBPF_XADD | EBPF_DW),
.dst_reg = EBPF_REG_1,
.src_reg = EBPF_REG_8,
.off = offsetof(struct dummy_offset, u64),
},
/* return 1 */
{
.code = (BPF_ALU | EBPF_MOV | BPF_K),
.dst_reg = EBPF_REG_0,
.imm = 1,
},
{
.code = (BPF_JMP | EBPF_EXIT),
},
};
static int
test_xadd1_check(uint64_t rc, const void *arg)
{
uint64_t rv;
const struct dummy_offset *dft;
struct dummy_offset dfe;
dft = arg;
memset(&dfe, 0, sizeof(dfe));
rv = 1;
rte_atomic32_add((rte_atomic32_t *)&dfe.u32, rv);
rte_atomic64_add((rte_atomic64_t *)&dfe.u64, rv);
rv = -1;
rte_atomic32_add((rte_atomic32_t *)&dfe.u32, rv);
rte_atomic64_add((rte_atomic64_t *)&dfe.u64, rv);
rv = (int32_t)TEST_FILL_1;
rte_atomic32_add((rte_atomic32_t *)&dfe.u32, rv);
rte_atomic64_add((rte_atomic64_t *)&dfe.u64, rv);
rv = TEST_MUL_1;
rte_atomic32_add((rte_atomic32_t *)&dfe.u32, rv);
rte_atomic64_add((rte_atomic64_t *)&dfe.u64, rv);
rv = TEST_MUL_2;
rte_atomic32_add((rte_atomic32_t *)&dfe.u32, rv);
rte_atomic64_add((rte_atomic64_t *)&dfe.u64, rv);
rv = TEST_JCC_2;
rte_atomic32_add((rte_atomic32_t *)&dfe.u32, rv);
rte_atomic64_add((rte_atomic64_t *)&dfe.u64, rv);
rv = TEST_JCC_3;
rte_atomic32_add((rte_atomic32_t *)&dfe.u32, rv);
rte_atomic64_add((rte_atomic64_t *)&dfe.u64, rv);
return cmp_res(__func__, 1, rc, &dfe, dft, sizeof(dfe));
}
/* alu div test-cases */
static const struct ebpf_insn test_div1_prog[] = {
{
.code = (BPF_LDX | BPF_MEM | BPF_W),
.dst_reg = EBPF_REG_2,
.src_reg = EBPF_REG_1,
.off = offsetof(struct dummy_vect8, in[0].u32),
},
{
.code = (BPF_LDX | BPF_MEM | EBPF_DW),
.dst_reg = EBPF_REG_3,
.src_reg = EBPF_REG_1,
.off = offsetof(struct dummy_vect8, in[1].u64),
},
{
.code = (BPF_LDX | BPF_MEM | BPF_W),
.dst_reg = EBPF_REG_4,
.src_reg = EBPF_REG_1,
.off = offsetof(struct dummy_vect8, in[2].u32),
},
{
.code = (BPF_ALU | BPF_DIV | BPF_K),
.dst_reg = EBPF_REG_2,
.imm = TEST_MUL_1,
},
{
.code = (EBPF_ALU64 | BPF_MOD | BPF_K),
.dst_reg = EBPF_REG_3,
.imm = TEST_MUL_2,
},
{
.code = (EBPF_ALU64 | BPF_OR | BPF_K),
.dst_reg = EBPF_REG_2,
.imm = 1,
},
{
.code = (EBPF_ALU64 | BPF_OR | BPF_K),
.dst_reg = EBPF_REG_3,
.imm = 1,
},
{
.code = (BPF_ALU | BPF_MOD | BPF_X),
.dst_reg = EBPF_REG_4,
.src_reg = EBPF_REG_2,
},
{
.code = (EBPF_ALU64 | BPF_DIV | BPF_X),
.dst_reg = EBPF_REG_4,
.src_reg = EBPF_REG_3,
},
{
.code = (BPF_STX | BPF_MEM | EBPF_DW),
.dst_reg = EBPF_REG_1,
.src_reg = EBPF_REG_2,
.off = offsetof(struct dummy_vect8, out[0].u64),
},
{
.code = (BPF_STX | BPF_MEM | EBPF_DW),
.dst_reg = EBPF_REG_1,
.src_reg = EBPF_REG_3,
.off = offsetof(struct dummy_vect8, out[1].u64),
},
{
.code = (BPF_STX | BPF_MEM | EBPF_DW),
.dst_reg = EBPF_REG_1,
.src_reg = EBPF_REG_4,
.off = offsetof(struct dummy_vect8, out[2].u64),
},
/* check that we can handle division by zero gracefully. */
{
.code = (BPF_LDX | BPF_MEM | BPF_W),
.dst_reg = EBPF_REG_2,
.src_reg = EBPF_REG_1,
.off = offsetof(struct dummy_vect8, in[3].u32),
},
{
.code = (BPF_ALU | BPF_DIV | BPF_X),
.dst_reg = EBPF_REG_4,
.src_reg = EBPF_REG_2,
},
/* return 1 */
{
.code = (BPF_ALU | EBPF_MOV | BPF_K),
.dst_reg = EBPF_REG_0,
.imm = 1,
},
{
.code = (BPF_JMP | EBPF_EXIT),
},
};
static int
test_div1_check(uint64_t rc, const void *arg)
{
uint64_t r2, r3, r4;
const struct dummy_vect8 *dvt;
struct dummy_vect8 dve;
dvt = arg;
memset(&dve, 0, sizeof(dve));
r2 = dvt->in[0].u32;
r3 = dvt->in[1].u64;
r4 = dvt->in[2].u32;
r2 = (uint32_t)r2 / TEST_MUL_1;
r3 %= TEST_MUL_2;
r2 |= 1;
r3 |= 1;
r4 = (uint32_t)(r4 % r2);
r4 /= r3;
dve.out[0].u64 = r2;
dve.out[1].u64 = r3;
dve.out[2].u64 = r4;
/*
* in the test prog we attempted to divide by zero.
* so return value should return 0.
*/
return cmp_res(__func__, 0, rc, dve.out, dvt->out, sizeof(dve.out));
}
/* call test-cases */
static const struct ebpf_insn test_call1_prog[] = {
{
.code = (BPF_LDX | BPF_MEM | BPF_W),
.dst_reg = EBPF_REG_2,
.src_reg = EBPF_REG_1,
.off = offsetof(struct dummy_offset, u32),
},
{
.code = (BPF_LDX | BPF_MEM | EBPF_DW),
.dst_reg = EBPF_REG_3,
.src_reg = EBPF_REG_1,
.off = offsetof(struct dummy_offset, u64),
},
{
.code = (BPF_STX | BPF_MEM | BPF_W),
.dst_reg = EBPF_REG_10,
.src_reg = EBPF_REG_2,
.off = -4,
},
{
.code = (BPF_STX | BPF_MEM | EBPF_DW),
.dst_reg = EBPF_REG_10,
.src_reg = EBPF_REG_3,
.off = -16,
},
{
.code = (EBPF_ALU64 | EBPF_MOV | BPF_X),
.dst_reg = EBPF_REG_2,
.src_reg = EBPF_REG_10,
},
{
.code = (EBPF_ALU64 | BPF_SUB | BPF_K),
.dst_reg = EBPF_REG_2,
.imm = 4,
},
{
.code = (EBPF_ALU64 | EBPF_MOV | BPF_X),
.dst_reg = EBPF_REG_3,
.src_reg = EBPF_REG_10,
},
{
.code = (EBPF_ALU64 | BPF_SUB | BPF_K),
.dst_reg = EBPF_REG_3,
.imm = 16,
},
{
.code = (BPF_JMP | EBPF_CALL),
.imm = 0,
},
{
.code = (BPF_LDX | BPF_MEM | BPF_W),
.dst_reg = EBPF_REG_2,
.src_reg = EBPF_REG_10,
.off = -4,
},
{
.code = (BPF_LDX | BPF_MEM | EBPF_DW),
.dst_reg = EBPF_REG_0,
.src_reg = EBPF_REG_10,
.off = -16
},
{
.code = (EBPF_ALU64 | BPF_ADD | BPF_X),
.dst_reg = EBPF_REG_0,
.src_reg = EBPF_REG_2,
},
{
.code = (BPF_JMP | EBPF_EXIT),
},
};
static void
dummy_func1(const void *p, uint32_t *v32, uint64_t *v64)
{
const struct dummy_offset *dv;
dv = p;
v32[0] += dv->u16;
v64[0] += dv->u8;
}
static int
test_call1_check(uint64_t rc, const void *arg)
{
uint32_t v32;
uint64_t v64;
const struct dummy_offset *dv;
dv = arg;
v32 = dv->u32;
v64 = dv->u64;
dummy_func1(arg, &v32, &v64);
v64 += v32;
return cmp_res(__func__, v64, rc, dv, dv, sizeof(*dv));
}
static const struct rte_bpf_xsym test_call1_xsym[] = {
{
.name = RTE_STR(dummy_func1),
.type = RTE_BPF_XTYPE_FUNC,
.func = {
.val = (void *)dummy_func1,
.nb_args = 3,
.args = {
[0] = {
.type = RTE_BPF_ARG_PTR,
.size = sizeof(struct dummy_offset),
},
[1] = {
.type = RTE_BPF_ARG_PTR,
.size = sizeof(uint32_t),
},
[2] = {
.type = RTE_BPF_ARG_PTR,
.size = sizeof(uint64_t),
},
},
},
},
};
static const struct ebpf_insn test_call2_prog[] = {
{
.code = (EBPF_ALU64 | EBPF_MOV | BPF_X),
.dst_reg = EBPF_REG_1,
.src_reg = EBPF_REG_10,
},
{
.code = (EBPF_ALU64 | BPF_ADD | BPF_K),
.dst_reg = EBPF_REG_1,
.imm = -(int32_t)sizeof(struct dummy_offset),
},
{
.code = (EBPF_ALU64 | EBPF_MOV | BPF_X),
.dst_reg = EBPF_REG_2,
.src_reg = EBPF_REG_10,
},
{
.code = (EBPF_ALU64 | BPF_ADD | BPF_K),
.dst_reg = EBPF_REG_2,
.imm = -2 * (int32_t)sizeof(struct dummy_offset),
},
{
.code = (BPF_JMP | EBPF_CALL),
.imm = 0,
},
{
.code = (BPF_LDX | BPF_MEM | EBPF_DW),
.dst_reg = EBPF_REG_1,
.src_reg = EBPF_REG_10,
.off = -(int32_t)(sizeof(struct dummy_offset) -
offsetof(struct dummy_offset, u64)),
},
{
.code = (BPF_LDX | BPF_MEM | BPF_W),
.dst_reg = EBPF_REG_0,
.src_reg = EBPF_REG_10,
.off = -(int32_t)(sizeof(struct dummy_offset) -
offsetof(struct dummy_offset, u32)),
},
{
.code = (EBPF_ALU64 | BPF_ADD | BPF_X),
.dst_reg = EBPF_REG_0,
.src_reg = EBPF_REG_1,
},
{
.code = (BPF_LDX | BPF_MEM | BPF_H),
.dst_reg = EBPF_REG_1,
.src_reg = EBPF_REG_10,
.off = -(int32_t)(2 * sizeof(struct dummy_offset) -
offsetof(struct dummy_offset, u16)),
},
{
.code = (EBPF_ALU64 | BPF_ADD | BPF_X),
.dst_reg = EBPF_REG_0,
.src_reg = EBPF_REG_1,
},
{
.code = (BPF_LDX | BPF_MEM | BPF_B),
.dst_reg = EBPF_REG_1,
.src_reg = EBPF_REG_10,
.off = -(int32_t)(2 * sizeof(struct dummy_offset) -
offsetof(struct dummy_offset, u8)),
},
{
.code = (EBPF_ALU64 | BPF_ADD | BPF_X),
.dst_reg = EBPF_REG_0,
.src_reg = EBPF_REG_1,
},
{
.code = (BPF_JMP | EBPF_EXIT),
},
};
static void
dummy_func2(struct dummy_offset *a, struct dummy_offset *b)
{
uint64_t v;
v = 0;
a->u64 = v++;
a->u32 = v++;
a->u16 = v++;
a->u8 = v++;
b->u64 = v++;
b->u32 = v++;
b->u16 = v++;
b->u8 = v++;
}
static int
test_call2_check(uint64_t rc, const void *arg)
{
uint64_t v;
struct dummy_offset a, b;
RTE_SET_USED(arg);
dummy_func2(&a, &b);
v = a.u64 + a.u32 + b.u16 + b.u8;
return cmp_res(__func__, v, rc, arg, arg, 0);
}
static const struct rte_bpf_xsym test_call2_xsym[] = {
{
.name = RTE_STR(dummy_func2),
.type = RTE_BPF_XTYPE_FUNC,
.func = {
.val = (void *)dummy_func2,
.nb_args = 2,
.args = {
[0] = {
.type = RTE_BPF_ARG_PTR,
.size = sizeof(struct dummy_offset),
},
[1] = {
.type = RTE_BPF_ARG_PTR,
.size = sizeof(struct dummy_offset),
},
},
},
},
};
static const struct ebpf_insn test_call3_prog[] = {
{
.code = (BPF_JMP | EBPF_CALL),
.imm = 0,
},
{
.code = (BPF_LDX | BPF_MEM | BPF_B),
.dst_reg = EBPF_REG_2,
.src_reg = EBPF_REG_0,
.off = offsetof(struct dummy_offset, u8),
},
{
.code = (BPF_LDX | BPF_MEM | BPF_H),
.dst_reg = EBPF_REG_3,
.src_reg = EBPF_REG_0,
.off = offsetof(struct dummy_offset, u16),
},
{
.code = (BPF_LDX | BPF_MEM | BPF_W),
.dst_reg = EBPF_REG_4,
.src_reg = EBPF_REG_0,
.off = offsetof(struct dummy_offset, u32),
},
{
.code = (BPF_LDX | BPF_MEM | EBPF_DW),
.dst_reg = EBPF_REG_0,
.src_reg = EBPF_REG_0,
.off = offsetof(struct dummy_offset, u64),
},
/* return sum */
{
.code = (EBPF_ALU64 | BPF_ADD | BPF_X),
.dst_reg = EBPF_REG_0,
.src_reg = EBPF_REG_4,
},
{
.code = (EBPF_ALU64 | BPF_ADD | BPF_X),
.dst_reg = EBPF_REG_0,
.src_reg = EBPF_REG_3,
},
{
.code = (EBPF_ALU64 | BPF_ADD | BPF_X),
.dst_reg = EBPF_REG_0,
.src_reg = EBPF_REG_2,
},
{
.code = (BPF_JMP | EBPF_EXIT),
},
};
static const struct dummy_offset *
dummy_func3(const struct dummy_vect8 *p)
{
return &p->in[RTE_DIM(p->in) - 1];
}
static void
test_call3_prepare(void *arg)
{
struct dummy_vect8 *pv;
struct dummy_offset *df;
pv = arg;
df = (struct dummy_offset *)(uintptr_t)dummy_func3(pv);
memset(pv, 0, sizeof(*pv));
df->u64 = (int32_t)TEST_FILL_1;
df->u32 = df->u64;
df->u16 = df->u64;
df->u8 = df->u64;
}
static int
test_call3_check(uint64_t rc, const void *arg)
{
uint64_t v;
const struct dummy_vect8 *pv;
const struct dummy_offset *dft;
pv = arg;
dft = dummy_func3(pv);
v = dft->u64;
v += dft->u32;
v += dft->u16;
v += dft->u8;
return cmp_res(__func__, v, rc, pv, pv, sizeof(*pv));
}
static const struct rte_bpf_xsym test_call3_xsym[] = {
{
.name = RTE_STR(dummy_func3),
.type = RTE_BPF_XTYPE_FUNC,
.func = {
.val = (void *)dummy_func3,
.nb_args = 1,
.args = {
[0] = {
.type = RTE_BPF_ARG_PTR,
.size = sizeof(struct dummy_vect8),
},
},
.ret = {
.type = RTE_BPF_ARG_PTR,
.size = sizeof(struct dummy_offset),
},
},
},
};
/* Test for stack corruption in multiple function calls */
static const struct ebpf_insn test_call4_prog[] = {
{
.code = (BPF_ST | BPF_MEM | BPF_B),
.dst_reg = EBPF_REG_10,
.off = -4,
.imm = 1,
},
{
.code = (BPF_ST | BPF_MEM | BPF_B),
.dst_reg = EBPF_REG_10,
.off = -3,
.imm = 2,
},
{
.code = (BPF_ST | BPF_MEM | BPF_B),
.dst_reg = EBPF_REG_10,
.off = -2,
.imm = 3,
},
{
.code = (BPF_ST | BPF_MEM | BPF_B),
.dst_reg = EBPF_REG_10,
.off = -1,
.imm = 4,
},
{
.code = (EBPF_ALU64 | EBPF_MOV | BPF_X),
.dst_reg = EBPF_REG_1,
.src_reg = EBPF_REG_10,
},
{
.code = (EBPF_ALU64 | EBPF_MOV | BPF_K),
.dst_reg = EBPF_REG_2,
.imm = 4,
},
{
.code = (EBPF_ALU64 | BPF_SUB | BPF_X),
.dst_reg = EBPF_REG_1,
.src_reg = EBPF_REG_2,
},
{
.code = (BPF_JMP | EBPF_CALL),
.imm = 0,
},
{
.code = (BPF_LDX | BPF_MEM | BPF_B),
.dst_reg = EBPF_REG_1,
.src_reg = EBPF_REG_10,
.off = -4,
},
{
.code = (BPF_LDX | BPF_MEM | BPF_B),
.dst_reg = EBPF_REG_2,
.src_reg = EBPF_REG_10,
.off = -3,
},
{
.code = (BPF_LDX | BPF_MEM | BPF_B),
.dst_reg = EBPF_REG_3,
.src_reg = EBPF_REG_10,
.off = -2,
},
{
.code = (BPF_LDX | BPF_MEM | BPF_B),
.dst_reg = EBPF_REG_4,
.src_reg = EBPF_REG_10,
.off = -1,
},
{
.code = (BPF_JMP | EBPF_CALL),
.imm = 1,
},
{
.code = (EBPF_ALU64 | BPF_XOR | BPF_K),
.dst_reg = EBPF_REG_0,
.imm = TEST_MEMFROB,
},
{
.code = (BPF_JMP | EBPF_EXIT),
},
};
/* Gathering the bytes together */
static uint32_t
dummy_func4_1(uint8_t a, uint8_t b, uint8_t c, uint8_t d)
{
return (a << 24) | (b << 16) | (c << 8) | (d << 0);
}
/* Implementation of memfrob */
static uint32_t
dummy_func4_0(uint32_t *s, uint8_t n)
{
char *p = (char *) s;
while (n-- > 0)
*p++ ^= 42;
return *s;
}
static int
test_call4_check(uint64_t rc, const void *arg)
{
uint8_t a[4] = {1, 2, 3, 4};
uint32_t s, v = 0;
RTE_SET_USED(arg);
s = dummy_func4_0((uint32_t *)a, 4);
s = dummy_func4_1(a[0], a[1], a[2], a[3]);
v = s ^ TEST_MEMFROB;
return cmp_res(__func__, v, rc, &v, &rc, sizeof(v));
}
static const struct rte_bpf_xsym test_call4_xsym[] = {
[0] = {
.name = RTE_STR(dummy_func4_0),
.type = RTE_BPF_XTYPE_FUNC,
.func = {
.val = (void *)dummy_func4_0,
.nb_args = 2,
.args = {
[0] = {
.type = RTE_BPF_ARG_PTR,
.size = 4 * sizeof(uint8_t),
},
[1] = {
.type = RTE_BPF_ARG_RAW,
.size = sizeof(uint8_t),
},
},
.ret = {
.type = RTE_BPF_ARG_RAW,
.size = sizeof(uint32_t),
},
},
},
[1] = {
.name = RTE_STR(dummy_func4_1),
.type = RTE_BPF_XTYPE_FUNC,
.func = {
.val = (void *)dummy_func4_1,
.nb_args = 4,
.args = {
[0] = {
.type = RTE_BPF_ARG_RAW,
.size = sizeof(uint8_t),
},
[1] = {
.type = RTE_BPF_ARG_RAW,
.size = sizeof(uint8_t),
},
[2] = {
.type = RTE_BPF_ARG_RAW,
.size = sizeof(uint8_t),
},
[3] = {
.type = RTE_BPF_ARG_RAW,
.size = sizeof(uint8_t),
},
},
.ret = {
.type = RTE_BPF_ARG_RAW,
.size = sizeof(uint32_t),
},
},
},
};
/* string compare test case */
static const struct ebpf_insn test_call5_prog[] = {
[0] = {
.code = (EBPF_ALU64 | EBPF_MOV | BPF_K),
.dst_reg = EBPF_REG_1,
.imm = STRING_GEEK,
},
[1] = {
.code = (BPF_STX | BPF_MEM | BPF_W),
.dst_reg = EBPF_REG_10,
.src_reg = EBPF_REG_1,
.off = -8,
},
[2] = {
.code = (EBPF_ALU64 | EBPF_MOV | BPF_K),
.dst_reg = EBPF_REG_6,
.imm = 0,
},
[3] = {
.code = (BPF_STX | BPF_MEM | BPF_B),
.dst_reg = EBPF_REG_10,
.src_reg = EBPF_REG_6,
.off = -4,
},
[4] = {
.code = (BPF_STX | BPF_MEM | BPF_W),
.dst_reg = EBPF_REG_10,
.src_reg = EBPF_REG_6,
.off = -12,
},
[5] = {
.code = (EBPF_ALU64 | EBPF_MOV | BPF_K),
.dst_reg = EBPF_REG_1,
.imm = STRING_WEEK,
},
[6] = {
.code = (BPF_STX | BPF_MEM | BPF_W),
.dst_reg = EBPF_REG_10,
.src_reg = EBPF_REG_1,
.off = -16,
},
[7] = {
.code = (EBPF_ALU64 | EBPF_MOV | BPF_X),
.dst_reg = EBPF_REG_1,
.src_reg = EBPF_REG_10,
},
[8] = {
.code = (EBPF_ALU64 | BPF_ADD | BPF_K),
.dst_reg = EBPF_REG_1,
.imm = -8,
},
[9] = {
.code = (EBPF_ALU64 | EBPF_MOV | BPF_X),
.dst_reg = EBPF_REG_2,
.src_reg = EBPF_REG_1,
},
[10] = {
.code = (BPF_JMP | EBPF_CALL),
.imm = 0,
},
[11] = {
.code = (EBPF_ALU64 | EBPF_MOV | BPF_X),
.dst_reg = EBPF_REG_1,
.src_reg = EBPF_REG_0,
},
[12] = {
.code = (BPF_ALU | EBPF_MOV | BPF_K),
.dst_reg = EBPF_REG_0,
.imm = -1,
},
[13] = {
.code = (EBPF_ALU64 | BPF_LSH | BPF_K),
.dst_reg = EBPF_REG_1,
.imm = 0x20,
},
[14] = {
.code = (EBPF_ALU64 | BPF_RSH | BPF_K),
.dst_reg = EBPF_REG_1,
.imm = 0x20,
},
[15] = {
.code = (BPF_JMP | EBPF_JNE | BPF_K),
.dst_reg = EBPF_REG_1,
.off = 11,
.imm = 0,
},
[16] = {
.code = (EBPF_ALU64 | EBPF_MOV | BPF_X),
.dst_reg = EBPF_REG_1,
.src_reg = EBPF_REG_10,
},
[17] = {
.code = (EBPF_ALU64 | BPF_ADD | BPF_K),
.dst_reg = EBPF_REG_1,
.imm = -8,
},
[18] = {
.code = (EBPF_ALU64 | EBPF_MOV | BPF_X),
.dst_reg = EBPF_REG_2,
.src_reg = EBPF_REG_10,
},
[19] = {
.code = (EBPF_ALU64 | BPF_ADD | BPF_K),
.dst_reg = EBPF_REG_2,
.imm = -16,
},
[20] = {
.code = (BPF_JMP | EBPF_CALL),
.imm = 0,
},
[21] = {
.code = (EBPF_ALU64 | EBPF_MOV | BPF_X),
.dst_reg = EBPF_REG_1,
.src_reg = EBPF_REG_0,
},
[22] = {
.code = (EBPF_ALU64 | BPF_LSH | BPF_K),
.dst_reg = EBPF_REG_1,
.imm = 0x20,
},
[23] = {
.code = (EBPF_ALU64 | BPF_RSH | BPF_K),
.dst_reg = EBPF_REG_1,
.imm = 0x20,
},
[24] = {
.code = (EBPF_ALU64 | EBPF_MOV | BPF_X),
.dst_reg = EBPF_REG_0,
.src_reg = EBPF_REG_1,
},
[25] = {
.code = (BPF_JMP | BPF_JEQ | BPF_X),
.dst_reg = EBPF_REG_1,
.src_reg = EBPF_REG_6,
.off = 1,
},
[26] = {
.code = (EBPF_ALU64 | EBPF_MOV | BPF_K),
.dst_reg = EBPF_REG_0,
.imm = 0,
},
[27] = {
.code = (BPF_JMP | EBPF_EXIT),
},
};
/* String comparision impelementation, return 0 if equal else difference */
static uint32_t
dummy_func5(const char *s1, const char *s2)
{
while (*s1 && (*s1 == *s2)) {
s1++;
s2++;
}
return *(const unsigned char *)s1 - *(const unsigned char *)s2;
}
static int
test_call5_check(uint64_t rc, const void *arg)
{
char a[] = "geek";
char b[] = "week";
uint32_t v;
RTE_SET_USED(arg);
v = dummy_func5(a, a);
if (v != 0) {
v = -1;
goto fail;
}
v = dummy_func5(a, b);
if (v == 0)
goto fail;
v = 0;
fail:
return cmp_res(__func__, v, rc, &v, &rc, sizeof(v));
}
static const struct rte_bpf_xsym test_call5_xsym[] = {
[0] = {
.name = RTE_STR(dummy_func5),
.type = RTE_BPF_XTYPE_FUNC,
.func = {
.val = (void *)dummy_func5,
.nb_args = 2,
.args = {
[0] = {
.type = RTE_BPF_ARG_PTR,
.size = sizeof(char),
},
[1] = {
.type = RTE_BPF_ARG_PTR,
.size = sizeof(char),
},
},
.ret = {
.type = RTE_BPF_ARG_RAW,
.size = sizeof(uint32_t),
},
},
},
};
/* load mbuf (BPF_ABS/BPF_IND) test-cases */
static const struct ebpf_insn test_ld_mbuf1_prog[] = {
/* BPF_ABS/BPF_IND implicitly expect mbuf ptr in R6 */
{
.code = (EBPF_ALU64 | EBPF_MOV | BPF_X),
.dst_reg = EBPF_REG_6,
.src_reg = EBPF_REG_1,
},
/* load IPv4 version and IHL */
{
.code = (BPF_LD | BPF_ABS | BPF_B),
.imm = offsetof(struct rte_ipv4_hdr, version_ihl),
},
/* check IP version */
{
.code = (EBPF_ALU64 | EBPF_MOV | BPF_X),
.dst_reg = EBPF_REG_2,
.src_reg = EBPF_REG_0,
},
{
.code = (BPF_ALU | BPF_AND | BPF_K),
.dst_reg = EBPF_REG_2,
.imm = 0xf0,
},
{
.code = (BPF_JMP | BPF_JEQ | BPF_K),
.dst_reg = EBPF_REG_2,
.imm = IPVERSION << 4,
.off = 2,
},
/* invalid IP version, return 0 */
{
.code = (EBPF_ALU64 | BPF_XOR | BPF_X),
.dst_reg = EBPF_REG_0,
.src_reg = EBPF_REG_0,
},
{
.code = (BPF_JMP | EBPF_EXIT),
},
/* load 3-rd byte of IP data */
{
.code = (BPF_ALU | BPF_AND | BPF_K),
.dst_reg = EBPF_REG_0,
.imm = RTE_IPV4_HDR_IHL_MASK,
},
{
.code = (BPF_ALU | BPF_LSH | BPF_K),
.dst_reg = EBPF_REG_0,
.imm = 2,
},
{
.code = (BPF_LD | BPF_IND | BPF_B),
.src_reg = EBPF_REG_0,
.imm = 3,
},
{
.code = (EBPF_ALU64 | EBPF_MOV | BPF_X),
.dst_reg = EBPF_REG_7,
.src_reg = EBPF_REG_0,
},
/* load IPv4 src addr */
{
.code = (BPF_LD | BPF_ABS | BPF_W),
.imm = offsetof(struct rte_ipv4_hdr, src_addr),
},
{
.code = (EBPF_ALU64 | BPF_ADD | BPF_X),
.dst_reg = EBPF_REG_7,
.src_reg = EBPF_REG_0,
},
/* load IPv4 total length */
{
.code = (BPF_LD | BPF_ABS | BPF_H),
.imm = offsetof(struct rte_ipv4_hdr, total_length),
},
{
.code = (EBPF_ALU64 | EBPF_MOV | BPF_X),
.dst_reg = EBPF_REG_8,
.src_reg = EBPF_REG_0,
},
/* load last 4 bytes of IP data */
{
.code = (BPF_LD | BPF_IND | BPF_W),
.src_reg = EBPF_REG_8,
.imm = -(int32_t)sizeof(uint32_t),
},
{
.code = (EBPF_ALU64 | BPF_ADD | BPF_X),
.dst_reg = EBPF_REG_7,
.src_reg = EBPF_REG_0,
},
/* load 2 bytes from the middle of IP data */
{
.code = (EBPF_ALU64 | BPF_RSH | BPF_K),
.dst_reg = EBPF_REG_8,
.imm = 1,
},
{
.code = (BPF_LD | BPF_IND | BPF_H),
.src_reg = EBPF_REG_8,
},
{
.code = (EBPF_ALU64 | BPF_ADD | BPF_X),
.dst_reg = EBPF_REG_0,
.src_reg = EBPF_REG_7,
},
{
.code = (BPF_JMP | EBPF_EXIT),
},
};
static void
dummy_mbuf_prep(struct rte_mbuf *mb, uint8_t buf[], uint32_t buf_len,
uint32_t data_len)
{
uint32_t i;
uint8_t *db;
mb->buf_addr = buf;
mb->buf_iova = (uintptr_t)buf;
mb->buf_len = buf_len;
rte_mbuf_refcnt_set(mb, 1);
/* set pool pointer to dummy value, test doesn't use it */
mb->pool = (void *)buf;
rte_pktmbuf_reset(mb);
db = (uint8_t *)rte_pktmbuf_append(mb, data_len);
for (i = 0; i != data_len; i++)
db[i] = i;
}
static void
test_ld_mbuf1_prepare(void *arg)
{
struct dummy_mbuf *dm;
struct rte_ipv4_hdr *ph;
const uint32_t plen = 400;
const struct rte_ipv4_hdr iph = {
.version_ihl = RTE_IPV4_VHL_DEF,
.total_length = rte_cpu_to_be_16(plen),
.time_to_live = IPDEFTTL,
.next_proto_id = IPPROTO_RAW,
.src_addr = rte_cpu_to_be_32(RTE_IPV4_LOOPBACK),
.dst_addr = rte_cpu_to_be_32(RTE_IPV4_BROADCAST),
};
dm = arg;
memset(dm, 0, sizeof(*dm));
dummy_mbuf_prep(&dm->mb[0], dm->buf[0], sizeof(dm->buf[0]),
plen / 2 + 1);
dummy_mbuf_prep(&dm->mb[1], dm->buf[1], sizeof(dm->buf[0]),
plen / 2 - 1);
rte_pktmbuf_chain(&dm->mb[0], &dm->mb[1]);
ph = rte_pktmbuf_mtod(dm->mb, typeof(ph));
memcpy(ph, &iph, sizeof(iph));
}
static uint64_t
test_ld_mbuf1(const struct rte_mbuf *pkt)
{
uint64_t n, v;
const uint8_t *p8;
const uint16_t *p16;
const uint32_t *p32;
struct dummy_offset dof;
/* load IPv4 version and IHL */
p8 = rte_pktmbuf_read(pkt,
offsetof(struct rte_ipv4_hdr, version_ihl), sizeof(*p8),
&dof);
if (p8 == NULL)
return 0;
/* check IP version */
if ((p8[0] & 0xf0) != IPVERSION << 4)
return 0;
n = (p8[0] & RTE_IPV4_HDR_IHL_MASK) * RTE_IPV4_IHL_MULTIPLIER;
/* load 3-rd byte of IP data */
p8 = rte_pktmbuf_read(pkt, n + 3, sizeof(*p8), &dof);
if (p8 == NULL)
return 0;
v = p8[0];
/* load IPv4 src addr */
p32 = rte_pktmbuf_read(pkt,
offsetof(struct rte_ipv4_hdr, src_addr), sizeof(*p32),
&dof);
if (p32 == NULL)
return 0;
v += rte_be_to_cpu_32(p32[0]);
/* load IPv4 total length */
p16 = rte_pktmbuf_read(pkt,
offsetof(struct rte_ipv4_hdr, total_length), sizeof(*p16),
&dof);
if (p16 == NULL)
return 0;
n = rte_be_to_cpu_16(p16[0]);
/* load last 4 bytes of IP data */
p32 = rte_pktmbuf_read(pkt, n - sizeof(*p32), sizeof(*p32), &dof);
if (p32 == NULL)
return 0;
v += rte_be_to_cpu_32(p32[0]);
/* load 2 bytes from the middle of IP data */
p16 = rte_pktmbuf_read(pkt, n / 2, sizeof(*p16), &dof);
if (p16 == NULL)
return 0;
v += rte_be_to_cpu_16(p16[0]);
return v;
}
static int
test_ld_mbuf1_check(uint64_t rc, const void *arg)
{
const struct dummy_mbuf *dm;
uint64_t v;
dm = arg;
v = test_ld_mbuf1(dm->mb);
return cmp_res(__func__, v, rc, arg, arg, 0);
}
/*
* same as ld_mbuf1, but then trancate the mbuf by 1B,
* so load of last 4B fail.
*/
static void
test_ld_mbuf2_prepare(void *arg)
{
struct dummy_mbuf *dm;
test_ld_mbuf1_prepare(arg);
dm = arg;
rte_pktmbuf_trim(dm->mb, 1);
}
static int
test_ld_mbuf2_check(uint64_t rc, const void *arg)
{
return cmp_res(__func__, 0, rc, arg, arg, 0);
}
/* same as test_ld_mbuf1, but now store intermediate results on the stack */
static const struct ebpf_insn test_ld_mbuf3_prog[] = {
/* BPF_ABS/BPF_IND implicitly expect mbuf ptr in R6 */
{
.code = (EBPF_ALU64 | EBPF_MOV | BPF_X),
.dst_reg = EBPF_REG_6,
.src_reg = EBPF_REG_1,
},
/* load IPv4 version and IHL */
{
.code = (BPF_LD | BPF_ABS | BPF_B),
.imm = offsetof(struct rte_ipv4_hdr, version_ihl),
},
/* check IP version */
{
.code = (EBPF_ALU64 | EBPF_MOV | BPF_X),
.dst_reg = EBPF_REG_2,
.src_reg = EBPF_REG_0,
},
{
.code = (BPF_ALU | BPF_AND | BPF_K),
.dst_reg = EBPF_REG_2,
.imm = 0xf0,
},
{
.code = (BPF_JMP | BPF_JEQ | BPF_K),
.dst_reg = EBPF_REG_2,
.imm = IPVERSION << 4,
.off = 2,
},
/* invalid IP version, return 0 */
{
.code = (EBPF_ALU64 | BPF_XOR | BPF_X),
.dst_reg = EBPF_REG_0,
.src_reg = EBPF_REG_0,
},
{
.code = (BPF_JMP | EBPF_EXIT),
},
/* load 3-rd byte of IP data */
{
.code = (BPF_ALU | BPF_AND | BPF_K),
.dst_reg = EBPF_REG_0,
.imm = RTE_IPV4_HDR_IHL_MASK,
},
{
.code = (BPF_ALU | BPF_LSH | BPF_K),
.dst_reg = EBPF_REG_0,
.imm = 2,
},
{
.code = (BPF_LD | BPF_IND | BPF_B),
.src_reg = EBPF_REG_0,
.imm = 3,
},
{
.code = (BPF_STX | BPF_MEM | BPF_B),
.dst_reg = EBPF_REG_10,
.src_reg = EBPF_REG_0,
.off = (int16_t)(offsetof(struct dummy_offset, u8) -
sizeof(struct dummy_offset)),
},
/* load IPv4 src addr */
{
.code = (BPF_LD | BPF_ABS | BPF_W),
.imm = offsetof(struct rte_ipv4_hdr, src_addr),
},
{
.code = (BPF_STX | BPF_MEM | BPF_W),
.dst_reg = EBPF_REG_10,
.src_reg = EBPF_REG_0,
.off = (int16_t)(offsetof(struct dummy_offset, u32) -
sizeof(struct dummy_offset)),
},
/* load IPv4 total length */
{
.code = (BPF_LD | BPF_ABS | BPF_H),
.imm = offsetof(struct rte_ipv4_hdr, total_length),
},
{
.code = (EBPF_ALU64 | EBPF_MOV | BPF_X),
.dst_reg = EBPF_REG_8,
.src_reg = EBPF_REG_0,
},
/* load last 4 bytes of IP data */
{
.code = (BPF_LD | BPF_IND | BPF_W),
.src_reg = EBPF_REG_8,
.imm = -(int32_t)sizeof(uint32_t),
},
{
.code = (BPF_STX | BPF_MEM | EBPF_DW),
.dst_reg = EBPF_REG_10,
.src_reg = EBPF_REG_0,
.off = (int16_t)(offsetof(struct dummy_offset, u64) -
sizeof(struct dummy_offset)),
},
/* load 2 bytes from the middle of IP data */
{
.code = (EBPF_ALU64 | BPF_RSH | BPF_K),
.dst_reg = EBPF_REG_8,
.imm = 1,
},
{
.code = (BPF_LD | BPF_IND | BPF_H),
.src_reg = EBPF_REG_8,
},
{
.code = (BPF_LDX | BPF_MEM | EBPF_DW),
.dst_reg = EBPF_REG_1,
.src_reg = EBPF_REG_10,
.off = (int16_t)(offsetof(struct dummy_offset, u64) -
sizeof(struct dummy_offset)),
},
{
.code = (EBPF_ALU64 | BPF_ADD | BPF_X),
.dst_reg = EBPF_REG_0,
.src_reg = EBPF_REG_1,
},
{
.code = (BPF_LDX | BPF_MEM | BPF_W),
.dst_reg = EBPF_REG_1,
.src_reg = EBPF_REG_10,
.off = (int16_t)(offsetof(struct dummy_offset, u32) -
sizeof(struct dummy_offset)),
},
{
.code = (EBPF_ALU64 | BPF_ADD | BPF_X),
.dst_reg = EBPF_REG_0,
.src_reg = EBPF_REG_1,
},
{
.code = (BPF_LDX | BPF_MEM | BPF_B),
.dst_reg = EBPF_REG_1,
.src_reg = EBPF_REG_10,
.off = (int16_t)(offsetof(struct dummy_offset, u8) -
sizeof(struct dummy_offset)),
},
{
.code = (EBPF_ALU64 | BPF_ADD | BPF_X),
.dst_reg = EBPF_REG_0,
.src_reg = EBPF_REG_1,
},
{
.code = (BPF_JMP | EBPF_EXIT),
},
};
/* all bpf test cases */
static const struct bpf_test tests[] = {
{
.name = "test_store1",
.arg_sz = sizeof(struct dummy_offset),
.prm = {
.ins = test_store1_prog,
.nb_ins = RTE_DIM(test_store1_prog),
.prog_arg = {
.type = RTE_BPF_ARG_PTR,
.size = sizeof(struct dummy_offset),
},
},
.prepare = test_store1_prepare,
.check_result = test_store1_check,
},
{
.name = "test_store2",
.arg_sz = sizeof(struct dummy_offset),
.prm = {
.ins = test_store2_prog,
.nb_ins = RTE_DIM(test_store2_prog),
.prog_arg = {
.type = RTE_BPF_ARG_PTR,
.size = sizeof(struct dummy_offset),
},
},
.prepare = test_store1_prepare,
.check_result = test_store1_check,
},
{
.name = "test_load1",
.arg_sz = sizeof(struct dummy_offset),
.prm = {
.ins = test_load1_prog,
.nb_ins = RTE_DIM(test_load1_prog),
.prog_arg = {
.type = RTE_BPF_ARG_PTR,
.size = sizeof(struct dummy_offset),
},
},
.prepare = test_load1_prepare,
.check_result = test_load1_check,
},
{
.name = "test_ldimm1",
.arg_sz = sizeof(struct dummy_offset),
.prm = {
.ins = test_ldimm1_prog,
.nb_ins = RTE_DIM(test_ldimm1_prog),
.prog_arg = {
.type = RTE_BPF_ARG_PTR,
.size = sizeof(struct dummy_offset),
},
},
.prepare = test_store1_prepare,
.check_result = test_ldimm1_check,
},
{
.name = "test_mul1",
.arg_sz = sizeof(struct dummy_vect8),
.prm = {
.ins = test_mul1_prog,
.nb_ins = RTE_DIM(test_mul1_prog),
.prog_arg = {
.type = RTE_BPF_ARG_PTR,
.size = sizeof(struct dummy_vect8),
},
},
.prepare = test_mul1_prepare,
.check_result = test_mul1_check,
},
{
.name = "test_shift1",
.arg_sz = sizeof(struct dummy_vect8),
.prm = {
.ins = test_shift1_prog,
.nb_ins = RTE_DIM(test_shift1_prog),
.prog_arg = {
.type = RTE_BPF_ARG_PTR,
.size = sizeof(struct dummy_vect8),
},
},
.prepare = test_shift1_prepare,
.check_result = test_shift1_check,
},
{
.name = "test_jump1",
.arg_sz = sizeof(struct dummy_vect8),
.prm = {
.ins = test_jump1_prog,
.nb_ins = RTE_DIM(test_jump1_prog),
.prog_arg = {
.type = RTE_BPF_ARG_PTR,
.size = sizeof(struct dummy_vect8),
},
},
.prepare = test_jump1_prepare,
.check_result = test_jump1_check,
},
{
.name = "test_jump2",
.arg_sz = sizeof(struct dummy_net),
.prm = {
.ins = test_jump2_prog,
.nb_ins = RTE_DIM(test_jump2_prog),
.prog_arg = {
.type = RTE_BPF_ARG_PTR,
.size = sizeof(struct dummy_net),
},
},
.prepare = test_jump2_prepare,
.check_result = test_jump2_check,
},
{
.name = "test_alu1",
.arg_sz = sizeof(struct dummy_vect8),
.prm = {
.ins = test_alu1_prog,
.nb_ins = RTE_DIM(test_alu1_prog),
.prog_arg = {
.type = RTE_BPF_ARG_PTR,
.size = sizeof(struct dummy_vect8),
},
},
.prepare = test_jump1_prepare,
.check_result = test_alu1_check,
},
{
.name = "test_bele1",
.arg_sz = sizeof(struct dummy_vect8),
.prm = {
.ins = test_bele1_prog,
.nb_ins = RTE_DIM(test_bele1_prog),
.prog_arg = {
.type = RTE_BPF_ARG_PTR,
.size = sizeof(struct dummy_vect8),
},
},
.prepare = test_bele1_prepare,
.check_result = test_bele1_check,
},
{
.name = "test_xadd1",
.arg_sz = sizeof(struct dummy_offset),
.prm = {
.ins = test_xadd1_prog,
.nb_ins = RTE_DIM(test_xadd1_prog),
.prog_arg = {
.type = RTE_BPF_ARG_PTR,
.size = sizeof(struct dummy_offset),
},
},
.prepare = test_store1_prepare,
.check_result = test_xadd1_check,
},
{
.name = "test_div1",
.arg_sz = sizeof(struct dummy_vect8),
.prm = {
.ins = test_div1_prog,
.nb_ins = RTE_DIM(test_div1_prog),
.prog_arg = {
.type = RTE_BPF_ARG_PTR,
.size = sizeof(struct dummy_vect8),
},
},
.prepare = test_mul1_prepare,
.check_result = test_div1_check,
},
{
.name = "test_call1",
.arg_sz = sizeof(struct dummy_offset),
.prm = {
.ins = test_call1_prog,
.nb_ins = RTE_DIM(test_call1_prog),
.prog_arg = {
.type = RTE_BPF_ARG_PTR,
.size = sizeof(struct dummy_offset),
},
.xsym = test_call1_xsym,
.nb_xsym = RTE_DIM(test_call1_xsym),
},
.prepare = test_load1_prepare,
.check_result = test_call1_check,
/* for now don't support function calls on 32 bit platform */
.allow_fail = (sizeof(uint64_t) != sizeof(uintptr_t)),
},
{
.name = "test_call2",
.arg_sz = sizeof(struct dummy_offset),
.prm = {
.ins = test_call2_prog,
.nb_ins = RTE_DIM(test_call2_prog),
.prog_arg = {
.type = RTE_BPF_ARG_PTR,
.size = sizeof(struct dummy_offset),
},
.xsym = test_call2_xsym,
.nb_xsym = RTE_DIM(test_call2_xsym),
},
.prepare = test_store1_prepare,
.check_result = test_call2_check,
/* for now don't support function calls on 32 bit platform */
.allow_fail = (sizeof(uint64_t) != sizeof(uintptr_t)),
},
{
.name = "test_call3",
.arg_sz = sizeof(struct dummy_vect8),
.prm = {
.ins = test_call3_prog,
.nb_ins = RTE_DIM(test_call3_prog),
.prog_arg = {
.type = RTE_BPF_ARG_PTR,
.size = sizeof(struct dummy_vect8),
},
.xsym = test_call3_xsym,
.nb_xsym = RTE_DIM(test_call3_xsym),
},
.prepare = test_call3_prepare,
.check_result = test_call3_check,
/* for now don't support function calls on 32 bit platform */
.allow_fail = (sizeof(uint64_t) != sizeof(uintptr_t)),
},
{
.name = "test_call4",
.arg_sz = sizeof(struct dummy_offset),
.prm = {
.ins = test_call4_prog,
.nb_ins = RTE_DIM(test_call4_prog),
.prog_arg = {
.type = RTE_BPF_ARG_PTR,
.size = 2 * sizeof(struct dummy_offset),
},
.xsym = test_call4_xsym,
.nb_xsym = RTE_DIM(test_call4_xsym),
},
.prepare = test_store1_prepare,
.check_result = test_call4_check,
/* for now don't support function calls on 32 bit platform */
.allow_fail = (sizeof(uint64_t) != sizeof(uintptr_t)),
},
{
.name = "test_call5",
.arg_sz = sizeof(struct dummy_offset),
.prm = {
.ins = test_call5_prog,
.nb_ins = RTE_DIM(test_call5_prog),
.prog_arg = {
.type = RTE_BPF_ARG_PTR,
.size = sizeof(struct dummy_offset),
},
.xsym = test_call5_xsym,
.nb_xsym = RTE_DIM(test_call5_xsym),
},
.prepare = test_store1_prepare,
.check_result = test_call5_check,
/* for now don't support function calls on 32 bit platform */
.allow_fail = (sizeof(uint64_t) != sizeof(uintptr_t)),
},
{
.name = "test_ld_mbuf1",
.arg_sz = sizeof(struct dummy_mbuf),
.prm = {
.ins = test_ld_mbuf1_prog,
.nb_ins = RTE_DIM(test_ld_mbuf1_prog),
.prog_arg = {
.type = RTE_BPF_ARG_PTR_MBUF,
.buf_size = sizeof(struct dummy_mbuf),
},
},
.prepare = test_ld_mbuf1_prepare,
.check_result = test_ld_mbuf1_check,
/* mbuf as input argument is not supported on 32 bit platform */
.allow_fail = (sizeof(uint64_t) != sizeof(uintptr_t)),
},
{
.name = "test_ld_mbuf2",
.arg_sz = sizeof(struct dummy_mbuf),
.prm = {
.ins = test_ld_mbuf1_prog,
.nb_ins = RTE_DIM(test_ld_mbuf1_prog),
.prog_arg = {
.type = RTE_BPF_ARG_PTR_MBUF,
.buf_size = sizeof(struct dummy_mbuf),
},
},
.prepare = test_ld_mbuf2_prepare,
.check_result = test_ld_mbuf2_check,
/* mbuf as input argument is not supported on 32 bit platform */
.allow_fail = (sizeof(uint64_t) != sizeof(uintptr_t)),
},
{
.name = "test_ld_mbuf3",
.arg_sz = sizeof(struct dummy_mbuf),
.prm = {
.ins = test_ld_mbuf3_prog,
.nb_ins = RTE_DIM(test_ld_mbuf3_prog),
.prog_arg = {
.type = RTE_BPF_ARG_PTR_MBUF,
.buf_size = sizeof(struct dummy_mbuf),
},
},
.prepare = test_ld_mbuf1_prepare,
.check_result = test_ld_mbuf1_check,
/* mbuf as input argument is not supported on 32 bit platform */
.allow_fail = (sizeof(uint64_t) != sizeof(uintptr_t)),
},
};
static int
run_test(const struct bpf_test *tst)
{
int32_t ret, rv;
int64_t rc;
struct rte_bpf *bpf;
struct rte_bpf_jit jit;
uint8_t tbuf[tst->arg_sz];
printf("%s(%s) start\n", __func__, tst->name);
bpf = rte_bpf_load(&tst->prm);
if (bpf == NULL) {
printf("%s@%d: failed to load bpf code, error=%d(%s);\n",
__func__, __LINE__, rte_errno, strerror(rte_errno));
return -1;
}
tst->prepare(tbuf);
rc = rte_bpf_exec(bpf, tbuf);
ret = tst->check_result(rc, tbuf);
if (ret != 0) {
printf("%s@%d: check_result(%s) failed, error: %d(%s);\n",
__func__, __LINE__, tst->name, ret, strerror(ret));
}
/* repeat the same test with jit, when possible */
rte_bpf_get_jit(bpf, &jit);
if (jit.func != NULL) {
tst->prepare(tbuf);
rc = jit.func(tbuf);
rv = tst->check_result(rc, tbuf);
ret |= rv;
if (rv != 0) {
printf("%s@%d: check_result(%s) failed, "
"error: %d(%s);\n",
__func__, __LINE__, tst->name,
rv, strerror(rv));
}
}
rte_bpf_destroy(bpf);
return ret;
}
static int
test_bpf(void)
{
int32_t rc, rv;
uint32_t i;
rc = 0;
for (i = 0; i != RTE_DIM(tests); i++) {
rv = run_test(tests + i);
if (tests[i].allow_fail == 0)
rc |= rv;
}
return rc;
}
REGISTER_TEST_COMMAND(bpf_autotest, test_bpf);
#ifdef RTE_PORT_PCAP
#include <pcap/pcap.h>
static void
test_bpf_dump(struct bpf_program *cbf, const struct rte_bpf_prm *prm)
{
printf("cBPF program (%u insns)\n", cbf->bf_len);
bpf_dump(cbf, 1);
printf("\neBPF program (%u insns)\n", prm->nb_ins);
rte_bpf_dump(stdout, prm->ins, prm->nb_ins);
}
static int
test_bpf_match(pcap_t *pcap, const char *str,
struct rte_mbuf *mb)
{
struct bpf_program fcode;
struct rte_bpf_prm *prm = NULL;
struct rte_bpf *bpf = NULL;
int ret = -1;
uint64_t rc;
if (pcap_compile(pcap, &fcode, str, 1, PCAP_NETMASK_UNKNOWN)) {
printf("%s@%d: pcap_compile(\"%s\") failed: %s;\n",
__func__, __LINE__, str, pcap_geterr(pcap));
return -1;
}
prm = rte_bpf_convert(&fcode);
if (prm == NULL) {
printf("%s@%d: bpf_convert('%s') failed,, error=%d(%s);\n",
__func__, __LINE__, str, rte_errno, strerror(rte_errno));
goto error;
}
bpf = rte_bpf_load(prm);
if (bpf == NULL) {
printf("%s@%d: failed to load bpf code, error=%d(%s);\n",
__func__, __LINE__, rte_errno, strerror(rte_errno));
goto error;
}
rc = rte_bpf_exec(bpf, mb);
/* The return code from bpf capture filter is non-zero if matched */
ret = (rc == 0);
error:
if (bpf)
rte_bpf_destroy(bpf);
rte_free(prm);
pcap_freecode(&fcode);
return ret;
}
/* Basic sanity test can we match a IP packet */
static int
test_bpf_filter_sanity(pcap_t *pcap)
{
const uint32_t plen = 100;
struct rte_mbuf mb, *m;
uint8_t tbuf[RTE_MBUF_DEFAULT_BUF_SIZE];
struct {
struct rte_ether_hdr eth_hdr;
struct rte_ipv4_hdr ip_hdr;
} *hdr;
dummy_mbuf_prep(&mb, tbuf, sizeof(tbuf), plen);
m = &mb;
hdr = rte_pktmbuf_mtod(m, typeof(hdr));
hdr->eth_hdr = (struct rte_ether_hdr) {
.dst_addr.addr_bytes = "\xff\xff\xff\xff\xff\xff",
.ether_type = rte_cpu_to_be_16(RTE_ETHER_TYPE_IPV4),
};
hdr->ip_hdr = (struct rte_ipv4_hdr) {
.version_ihl = RTE_IPV4_VHL_DEF,
.total_length = rte_cpu_to_be_16(plen),
.time_to_live = IPDEFTTL,
.next_proto_id = IPPROTO_RAW,
.src_addr = rte_cpu_to_be_32(RTE_IPV4_LOOPBACK),
.dst_addr = rte_cpu_to_be_32(RTE_IPV4_BROADCAST),
};
if (test_bpf_match(pcap, "ip", m) != 0) {
printf("%s@%d: filter \"ip\" doesn't match test data\n",
__func__, __LINE__);
return -1;
}
if (test_bpf_match(pcap, "not ip", m) == 0) {
printf("%s@%d: filter \"not ip\" does match test data\n",
__func__, __LINE__);
return -1;
}
return 0;
}
/*
* Some sample pcap filter strings from
* https://wiki.wireshark.org/CaptureFilters
*/
static const char * const sample_filters[] = {
"host 172.18.5.4",
"net 192.168.0.0/24",
"src net 192.168.0.0/24",
"src net 192.168.0.0 mask 255.255.255.0",
"dst net 192.168.0.0/24",
"dst net 192.168.0.0 mask 255.255.255.0",
"port 53",
"host dpdk.org and not (port 80 or port 25)",
"host dpdk.org and not port 80 and not port 25",
"port not 53 and not arp",
"(tcp[0:2] > 1500 and tcp[0:2] < 1550) or (tcp[2:2] > 1500 and tcp[2:2] < 1550)",
"ether proto 0x888e",
"ether[0] & 1 = 0 and ip[16] >= 224",
"icmp[icmptype] != icmp-echo and icmp[icmptype] != icmp-echoreply",
"tcp[tcpflags] & (tcp-syn|tcp-fin) != 0 and not src and dst net 127.0.0.1",
"not ether dst 01:80:c2:00:00:0e",
"not broadcast and not multicast",
"dst host ff02::1",
"port 80 and tcp[((tcp[12:1] & 0xf0) >> 2):4] = 0x47455420",
/* Worms */
"dst port 135 and tcp port 135 and ip[2:2]==48",
"icmp[icmptype]==icmp-echo and ip[2:2]==92 and icmp[8:4]==0xAAAAAAAA",
"dst port 135 or dst port 445 or dst port 1433"
" and tcp[tcpflags] & (tcp-syn) != 0"
" and tcp[tcpflags] & (tcp-ack) = 0 and src net 192.168.0.0/24",
"tcp src port 443 and (tcp[((tcp[12] & 0xF0) >> 4 ) * 4] = 0x18)"
" and (tcp[((tcp[12] & 0xF0) >> 4 ) * 4 + 1] = 0x03)"
" and (tcp[((tcp[12] & 0xF0) >> 4 ) * 4 + 2] < 0x04)"
" and ((ip[2:2] - 4 * (ip[0] & 0x0F) - 4 * ((tcp[12] & 0xF0) >> 4) > 69))",
/* Other */
"len = 128",
};
static int
test_bpf_filter(pcap_t *pcap, const char *s)
{
struct bpf_program fcode;
struct rte_bpf_prm *prm = NULL;
struct rte_bpf *bpf = NULL;
if (pcap_compile(pcap, &fcode, s, 1, PCAP_NETMASK_UNKNOWN)) {
printf("%s@%d: pcap_compile('%s') failed: %s;\n",
__func__, __LINE__, s, pcap_geterr(pcap));
return -1;
}
prm = rte_bpf_convert(&fcode);
if (prm == NULL) {
printf("%s@%d: bpf_convert('%s') failed,, error=%d(%s);\n",
__func__, __LINE__, s, rte_errno, strerror(rte_errno));
goto error;
}
bpf = rte_bpf_load(prm);
if (bpf == NULL) {
printf("%s@%d: failed to load bpf code, error=%d(%s);\n",
__func__, __LINE__, rte_errno, strerror(rte_errno));
goto error;
}
error:
if (bpf)
rte_bpf_destroy(bpf);
else {
printf("%s \"%s\"\n", __func__, s);
test_bpf_dump(&fcode, prm);
}
rte_free(prm);
pcap_freecode(&fcode);
return (bpf == NULL) ? -1 : 0;
}
static int
test_bpf_convert(void)
{
unsigned int i;
pcap_t *pcap;
int rc;
pcap = pcap_open_dead(DLT_EN10MB, 262144);
if (!pcap) {
printf("pcap_open_dead failed\n");
return -1;
}
rc = test_bpf_filter_sanity(pcap);
for (i = 0; i < RTE_DIM(sample_filters); i++)
rc |= test_bpf_filter(pcap, sample_filters[i]);
pcap_close(pcap);
return rc;
}
REGISTER_TEST_COMMAND(bpf_convert_autotest, test_bpf_convert);
#endif /* RTE_PORT_PCAP */
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