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TSG-14829 io_uring支持触发事件，适配mrzcpd的epoll_wait功能

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This commit is contained in:
luwenpeng
2023-04-21 17:57:23 +08:00
parent 6e02f6b8ac
commit 97a4386bc4
20 changed files with 2255 additions and 1 deletions
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4
.gitlab-ci.yml
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@@ -38,6 +38,10 @@ stages:
script:
- dnf --enablerepo=powertools install -y libmnl-devel
- dnf --enablerepo=powertools install -y libnfnetlink-devel
- dnf --enablerepo=powertools install -y clang
- dnf --enablerepo=powertools install -y llvm
- dnf --enablerepo=powertools install -y libbpf-devel
- dnf --enablerepo=powertools install -y liburing-devel
- ./ci/travis.sh
tags:
- share

19
CMakeLists.txt
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@@ -43,6 +43,22 @@ if(ENABLE_PIC)
set(CMAKE_POSITION_INDEPENDENT_CODE 1)
endif()
find_package(LIBURING)
if (SUPPORT_LIBURING)
add_definitions(-DSUPPORT_LIBURING=1)
message(STATUS "Support liburing")
else()
message(STATUS "Not support liburing")
endif()
find_package(LIBBPF)
if (SUPPORT_BPF)
add_definitions(-DSUPPORT_BPF=1)
message(STATUS "Support BPF")
else()
message(STATUS "Not support BPF")
endif()
if(ENABLE_WARNING_ALL)
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall")
@@ -76,3 +92,6 @@ add_subdirectory(plugin)
add_subdirectory(platform)
add_subdirectory(cache)
add_subdirectory(script)
if (SUPPORT_BPF)
add_subdirectory(bpf)
endif()

1
bpf/CMakeLists.txt Normal file
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@@ -0,0 +1 @@
execute_process(COMMAND make WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}/bpf/)

53
bpf/bpf_config_define.h Normal file
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@@ -0,0 +1,53 @@
#ifndef _BPF_CONFIG_H_
#define _BPF_CONFIG_H_
#ifdef __cplusplus
extern "C"
{
#endif
#define BPF_CONFIG_KEY_DEBUG_LOG "bpf_debug_log"
#define BPF_CONFIG_KEY_HASH_MODE "bpf_hash_mode"
#define BPF_CONFIG_KEY_QUEUE_NUM "bpf_queue_num"
#define __uint(name, val) int(*name)[val]
#define __type(name, val) val *name
#define SEC(NAME) __attribute__((section(NAME), used))
enum bpf_hash_mode
{
BPF_HASH_MODE_TUPLE2 = 0x2,
BPF_HASH_MODE_TUPLE4 = 0x4,
};
struct string32
{
char str[32];
};
struct kv_pair
{
struct string32 key;
__u32 val;
};
struct bpf_config
{
struct kv_pair debug_log;
struct kv_pair hash_mode;
struct kv_pair queue_num;
};
struct
{
__uint(type, BPF_MAP_TYPE_HASH);
__type(key, struct string32);
__type(value, __u32);
__uint(max_entries, 16);
} bpf_config_map SEC(".maps");
#ifdef __cplusplus
}
#endif
#endif

61
bpf/bpf_config_kernel.h Normal file
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@@ -0,0 +1,61 @@
#ifndef _BPF_CONFIG_KERNEL_H_
#define _BPF_CONFIG_KERNEL_H_
#ifdef __cplusplus
extern "C"
{
#endif
#include "bpf_helpers.h"
#include "bpf_config_define.h"
/******************************************************************************
* Get By KernelSpace
******************************************************************************/
static inline void bpf_config_lookup_map(struct bpf_config *config)
{
__u32 *val;
__builtin_memcpy(config->debug_log.key.str, BPF_CONFIG_KEY_DEBUG_LOG, 13);
val = (__u32 *)bpf_map_lookup_elem(&bpf_config_map, &config->debug_log.key);
if (val)
{
config->debug_log.val = *val;
}
__builtin_memcpy(config->hash_mode.key.str, BPF_CONFIG_KEY_HASH_MODE, 13);
val = (__u32 *)bpf_map_lookup_elem(&bpf_config_map, &config->hash_mode.key);
if (val)
{
config->hash_mode.val = *val;
}
__builtin_memcpy(config->queue_num.key.str, BPF_CONFIG_KEY_QUEUE_NUM, 13);
val = (__u32 *)bpf_map_lookup_elem(&bpf_config_map, &config->queue_num.key);
if (val)
{
config->queue_num.val = *val;
}
}
static inline __u32 bpf_config_get_debug_log(struct bpf_config *config)
{
return config->debug_log.val;
}
static inline __u32 bpf_config_get_hash_mode(struct bpf_config *config)
{
return config->hash_mode.val;
}
static inline __u32 bpf_config_get_queue_num(struct bpf_config *config)
{
return config->queue_num.val;
}
#ifdef __cplusplus
}
#endif
#endif

72
bpf/bpf_config_user.h Normal file
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@@ -0,0 +1,72 @@
#ifndef _BPF_CONFIG_USER_H_
#define _BPF_CONFIG_USER_H_
#ifdef __cplusplus
extern "C"
{
#endif
#include <stdio.h>
#include <string.h>
#include <bpf/bpf.h>
#include <bpf/libbpf.h>
#include "bpf_config_define.h"
/******************************************************************************
* Set By UserSpace
******************************************************************************/
static inline int bpf_config_update_map(struct bpf_config *config, struct bpf_object *bpf_obj)
{
int bpf_config_map_fd = bpf_object__find_map_fd_by_name(bpf_obj, "bpf_config_map");
if (bpf_config_map_fd < 0)
{
printf("ERROR: Could not find bpf_config_map in bpf object file.\n");
return -1;
}
if (bpf_map_update_elem(bpf_config_map_fd, &config->debug_log.key, &config->debug_log.val, 0))
{
printf("ERROR: Could not update bpf_config_map element[%s:%d].\n", config->debug_log.key.str, config->debug_log.val);
return -1;
}
if (bpf_map_update_elem(bpf_config_map_fd, &config->hash_mode.key, &config->hash_mode.val, 0))
{
printf("ERROR: Could not update bpf_config_map element[%s:%d].\n", config->hash_mode.key.str, config->hash_mode.val);
return -1;
}
if (bpf_map_update_elem(bpf_config_map_fd, &config->queue_num.key, &config->queue_num.val, 0))
{
printf("ERROR: Could not update bpf_config_map element[%s:%d].\n", config->queue_num.key.str, config->queue_num.val);
return -1;
}
return 0;
}
static inline void bpf_config_set_debug_log(struct bpf_config *config, __u32 val)
{
config->debug_log.val = val;
memcpy(config->debug_log.key.str, BPF_CONFIG_KEY_DEBUG_LOG, strlen(BPF_CONFIG_KEY_DEBUG_LOG));
}
static inline void bpf_config_set_hash_mode(struct bpf_config *config, __u32 val)
{
config->hash_mode.val = val;
memcpy(config->hash_mode.key.str, BPF_CONFIG_KEY_HASH_MODE, strlen(BPF_CONFIG_KEY_HASH_MODE));
}
static inline void bpf_config_set_queue_num(struct bpf_config *config, __u32 val)
{
config->queue_num.val = val;
memcpy(config->queue_num.key.str, BPF_CONFIG_KEY_QUEUE_NUM, strlen(BPF_CONFIG_KEY_QUEUE_NUM));
}
#ifdef __cplusplus
}
#endif
#endif

494
bpf/bpf_helpers.h Normal file
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@@ -0,0 +1,494 @@
/* From https://github.com/torvalds/linux/blob/v5.4/tools/testing/selftests/bpf/bpf_helpers.h */
/* SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause) */
#ifndef __BPF_HELPERS__
#define __BPF_HELPERS__
#include <linux/bpf.h>
#define __uint(name, val) int(*name)[val]
#define __type(name, val) val *name
/* helper macro to print out debug messages */
#define bpf_printk(fmt, ...) \
({ \
char ____fmt[] = fmt; \
bpf_trace_printk(____fmt, sizeof(____fmt), \
##__VA_ARGS__); \
})
#ifdef __clang__
/* helper macro to place programs, maps, license in
* different sections in elf_bpf file. Section names
* are interpreted by elf_bpf loader
*/
#define SEC(NAME) __attribute__((section(NAME), used))
/* helper functions called from eBPF programs written in C */
static void *(*bpf_map_lookup_elem)(void *map, const void *key) =
(void *)BPF_FUNC_map_lookup_elem;
static int (*bpf_map_update_elem)(void *map, const void *key, const void *value, unsigned long long flags) =
(void *)BPF_FUNC_map_update_elem;
static int (*bpf_map_delete_elem)(void *map, const void *key) =
(void *)BPF_FUNC_map_delete_elem;
static int (*bpf_map_push_elem)(void *map, const void *value, unsigned long long flags) =
(void *)BPF_FUNC_map_push_elem;
static int (*bpf_map_pop_elem)(void *map, void *value) =
(void *)BPF_FUNC_map_pop_elem;
static int (*bpf_map_peek_elem)(void *map, void *value) =
(void *)BPF_FUNC_map_peek_elem;
static int (*bpf_probe_read)(void *dst, int size, const void *unsafe_ptr) =
(void *)BPF_FUNC_probe_read;
static unsigned long long (*bpf_ktime_get_ns)(void) =
(void *)BPF_FUNC_ktime_get_ns;
static int (*bpf_trace_printk)(const char *fmt, int fmt_size, ...) =
(void *)BPF_FUNC_trace_printk;
static void (*bpf_tail_call)(void *ctx, void *map, int index) =
(void *)BPF_FUNC_tail_call;
static unsigned long long (*bpf_get_smp_processor_id)(void) =
(void *)BPF_FUNC_get_smp_processor_id;
static unsigned long long (*bpf_get_current_pid_tgid)(void) =
(void *)BPF_FUNC_get_current_pid_tgid;
static unsigned long long (*bpf_get_current_uid_gid)(void) =
(void *)BPF_FUNC_get_current_uid_gid;
static int (*bpf_get_current_comm)(void *buf, int buf_size) =
(void *)BPF_FUNC_get_current_comm;
static unsigned long long (*bpf_perf_event_read)(void *map, unsigned long long flags) =
(void *)BPF_FUNC_perf_event_read;
static int (*bpf_clone_redirect)(void *ctx, int ifindex, int flags) =
(void *)BPF_FUNC_clone_redirect;
static int (*bpf_redirect)(int ifindex, int flags) =
(void *)BPF_FUNC_redirect;
static int (*bpf_redirect_map)(void *map, int key, int flags) =
(void *)BPF_FUNC_redirect_map;
static int (*bpf_perf_event_output)(void *ctx, void *map, unsigned long long flags, void *data, int size) =
(void *)BPF_FUNC_perf_event_output;
static int (*bpf_get_stackid)(void *ctx, void *map, int flags) =
(void *)BPF_FUNC_get_stackid;
static int (*bpf_probe_write_user)(void *dst, const void *src, int size) =
(void *)BPF_FUNC_probe_write_user;
static int (*bpf_current_task_under_cgroup)(void *map, int index) =
(void *)BPF_FUNC_current_task_under_cgroup;
static int (*bpf_skb_get_tunnel_key)(void *ctx, void *key, int size, int flags) =
(void *)BPF_FUNC_skb_get_tunnel_key;
static int (*bpf_skb_set_tunnel_key)(void *ctx, void *key, int size, int flags) =
(void *)BPF_FUNC_skb_set_tunnel_key;
static int (*bpf_skb_get_tunnel_opt)(void *ctx, void *md, int size) =
(void *)BPF_FUNC_skb_get_tunnel_opt;
static int (*bpf_skb_set_tunnel_opt)(void *ctx, void *md, int size) =
(void *)BPF_FUNC_skb_set_tunnel_opt;
static unsigned long long (*bpf_get_prandom_u32)(void) =
(void *)BPF_FUNC_get_prandom_u32;
static int (*bpf_xdp_adjust_head)(void *ctx, int offset) =
(void *)BPF_FUNC_xdp_adjust_head;
static int (*bpf_xdp_adjust_meta)(void *ctx, int offset) =
(void *)BPF_FUNC_xdp_adjust_meta;
static int (*bpf_get_socket_cookie)(void *ctx) =
(void *)BPF_FUNC_get_socket_cookie;
static int (*bpf_setsockopt)(void *ctx, int level, int optname, void *optval, int optlen) =
(void *)BPF_FUNC_setsockopt;
static int (*bpf_getsockopt)(void *ctx, int level, int optname, void *optval, int optlen) =
(void *)BPF_FUNC_getsockopt;
static int (*bpf_sock_ops_cb_flags_set)(void *ctx, int flags) =
(void *)BPF_FUNC_sock_ops_cb_flags_set;
static int (*bpf_sk_redirect_map)(void *ctx, void *map, int key, int flags) =
(void *)BPF_FUNC_sk_redirect_map;
static int (*bpf_sk_redirect_hash)(void *ctx, void *map, void *key, int flags) =
(void *)BPF_FUNC_sk_redirect_hash;
static int (*bpf_sock_map_update)(void *map, void *key, void *value, unsigned long long flags) =
(void *)BPF_FUNC_sock_map_update;
static int (*bpf_sock_hash_update)(void *map, void *key, void *value, unsigned long long flags) =
(void *)BPF_FUNC_sock_hash_update;
static int (*bpf_perf_event_read_value)(void *map, unsigned long long flags, void *buf, unsigned int buf_size) =
(void *)BPF_FUNC_perf_event_read_value;
static int (*bpf_perf_prog_read_value)(void *ctx, void *buf, unsigned int buf_size) =
(void *)BPF_FUNC_perf_prog_read_value;
static int (*bpf_override_return)(void *ctx, unsigned long rc) =
(void *)BPF_FUNC_override_return;
static int (*bpf_msg_redirect_map)(void *ctx, void *map, int key, int flags) =
(void *)BPF_FUNC_msg_redirect_map;
static int (*bpf_msg_redirect_hash)(void *ctx, void *map, void *key, int flags) =
(void *)BPF_FUNC_msg_redirect_hash;
static int (*bpf_msg_apply_bytes)(void *ctx, int len) =
(void *)BPF_FUNC_msg_apply_bytes;
static int (*bpf_msg_cork_bytes)(void *ctx, int len) =
(void *)BPF_FUNC_msg_cork_bytes;
static int (*bpf_msg_pull_data)(void *ctx, int start, int end, int flags) =
(void *)BPF_FUNC_msg_pull_data;
static int (*bpf_msg_push_data)(void *ctx, int start, int end, int flags) =
(void *)BPF_FUNC_msg_push_data;
static int (*bpf_msg_pop_data)(void *ctx, int start, int cut, int flags) =
(void *)BPF_FUNC_msg_pop_data;
static int (*bpf_bind)(void *ctx, void *addr, int addr_len) =
(void *)BPF_FUNC_bind;
static int (*bpf_xdp_adjust_tail)(void *ctx, int offset) =
(void *)BPF_FUNC_xdp_adjust_tail;
static int (*bpf_skb_get_xfrm_state)(void *ctx, int index, void *state, int size, int flags) =
(void *)BPF_FUNC_skb_get_xfrm_state;
static int (*bpf_sk_select_reuseport)(void *ctx, void *map, void *key, __u32 flags) =
(void *)BPF_FUNC_sk_select_reuseport;
static int (*bpf_get_stack)(void *ctx, void *buf, int size, int flags) =
(void *)BPF_FUNC_get_stack;
static int (*bpf_fib_lookup)(void *ctx, struct bpf_fib_lookup *params, int plen, __u32 flags) =
(void *)BPF_FUNC_fib_lookup;
static int (*bpf_lwt_push_encap)(void *ctx, unsigned int type, void *hdr, unsigned int len) =
(void *)BPF_FUNC_lwt_push_encap;
static int (*bpf_lwt_seg6_store_bytes)(void *ctx, unsigned int offset, void *from, unsigned int len) =
(void *)BPF_FUNC_lwt_seg6_store_bytes;
static int (*bpf_lwt_seg6_action)(void *ctx, unsigned int action, void *param, unsigned int param_len) =
(void *)BPF_FUNC_lwt_seg6_action;
static int (*bpf_lwt_seg6_adjust_srh)(void *ctx, unsigned int offset, unsigned int len) =
(void *)BPF_FUNC_lwt_seg6_adjust_srh;
static int (*bpf_rc_repeat)(void *ctx) =
(void *)BPF_FUNC_rc_repeat;
static int (*bpf_rc_keydown)(void *ctx, unsigned int protocol, unsigned long long scancode, unsigned int toggle) =
(void *)BPF_FUNC_rc_keydown;
static unsigned long long (*bpf_get_current_cgroup_id)(void) =
(void *)BPF_FUNC_get_current_cgroup_id;
static void *(*bpf_get_local_storage)(void *map, unsigned long long flags) =
(void *)BPF_FUNC_get_local_storage;
static unsigned long long (*bpf_skb_cgroup_id)(void *ctx) =
(void *)BPF_FUNC_skb_cgroup_id;
static unsigned long long (*bpf_skb_ancestor_cgroup_id)(void *ctx, int level) =
(void *)BPF_FUNC_skb_ancestor_cgroup_id;
static struct bpf_sock *(*bpf_sk_lookup_tcp)(void *ctx, struct bpf_sock_tuple *tuple, int size, unsigned long long netns_id, unsigned long long flags) =
(void *)BPF_FUNC_sk_lookup_tcp;
static struct bpf_sock *(*bpf_skc_lookup_tcp)(void *ctx, struct bpf_sock_tuple *tuple, int size, unsigned long long netns_id, unsigned long long flags) =
(void *)BPF_FUNC_skc_lookup_tcp;
static struct bpf_sock *(*bpf_sk_lookup_udp)(void *ctx, struct bpf_sock_tuple *tuple, int size, unsigned long long netns_id, unsigned long long flags) =
(void *)BPF_FUNC_sk_lookup_udp;
static int (*bpf_sk_release)(struct bpf_sock *sk) =
(void *)BPF_FUNC_sk_release;
static int (*bpf_skb_vlan_push)(void *ctx, __be16 vlan_proto, __u16 vlan_tci) =
(void *)BPF_FUNC_skb_vlan_push;
static int (*bpf_skb_vlan_pop)(void *ctx) =
(void *)BPF_FUNC_skb_vlan_pop;
static int (*bpf_rc_pointer_rel)(void *ctx, int rel_x, int rel_y) =
(void *)BPF_FUNC_rc_pointer_rel;
static void (*bpf_spin_lock)(struct bpf_spin_lock *lock) =
(void *)BPF_FUNC_spin_lock;
static void (*bpf_spin_unlock)(struct bpf_spin_lock *lock) =
(void *)BPF_FUNC_spin_unlock;
static struct bpf_sock *(*bpf_sk_fullsock)(struct bpf_sock *sk) =
(void *)BPF_FUNC_sk_fullsock;
static struct bpf_tcp_sock *(*bpf_tcp_sock)(struct bpf_sock *sk) =
(void *)BPF_FUNC_tcp_sock;
static struct bpf_sock *(*bpf_get_listener_sock)(struct bpf_sock *sk) =
(void *)BPF_FUNC_get_listener_sock;
static int (*bpf_skb_ecn_set_ce)(void *ctx) =
(void *)BPF_FUNC_skb_ecn_set_ce;
static int (*bpf_tcp_check_syncookie)(struct bpf_sock *sk, void *ip, int ip_len, void *tcp, int tcp_len) =
(void *)BPF_FUNC_tcp_check_syncookie;
static int (*bpf_sysctl_get_name)(void *ctx, char *buf, unsigned long long buf_len, unsigned long long flags) =
(void *)BPF_FUNC_sysctl_get_name;
static int (*bpf_sysctl_get_current_value)(void *ctx, char *buf, unsigned long long buf_len) =
(void *)BPF_FUNC_sysctl_get_current_value;
static int (*bpf_sysctl_get_new_value)(void *ctx, char *buf, unsigned long long buf_len) =
(void *)BPF_FUNC_sysctl_get_new_value;
static int (*bpf_sysctl_set_new_value)(void *ctx, const char *buf, unsigned long long buf_len) =
(void *)BPF_FUNC_sysctl_set_new_value;
static int (*bpf_strtol)(const char *buf, unsigned long long buf_len, unsigned long long flags, long *res) =
(void *)BPF_FUNC_strtol;
static int (*bpf_strtoul)(const char *buf, unsigned long long buf_len, unsigned long long flags, unsigned long *res) =
(void *)BPF_FUNC_strtoul;
static void *(*bpf_sk_storage_get)(void *map, struct bpf_sock *sk, void *value, __u64 flags) =
(void *)BPF_FUNC_sk_storage_get;
static int (*bpf_sk_storage_delete)(void *map, struct bpf_sock *sk) =
(void *)BPF_FUNC_sk_storage_delete;
static int (*bpf_send_signal)(unsigned sig) =
(void *)BPF_FUNC_send_signal;
static long long (*bpf_tcp_gen_syncookie)(struct bpf_sock *sk, void *ip, int ip_len, void *tcp, int tcp_len) =
(void *)BPF_FUNC_tcp_gen_syncookie;
/* llvm builtin functions that eBPF C program may use to
* emit BPF_LD_ABS and BPF_LD_IND instructions
*/
struct sk_buff;
unsigned long long load_byte(void *skb, unsigned long long off) asm("llvm.bpf.load.byte");
unsigned long long load_half(void *skb, unsigned long long off) asm("llvm.bpf.load.half");
unsigned long long load_word(void *skb, unsigned long long off) asm("llvm.bpf.load.word");
/* a helper structure used by eBPF C program
* to describe map attributes to elf_bpf loader
*/
struct bpf_map_def
{
unsigned int type;
unsigned int key_size;
unsigned int value_size;
unsigned int max_entries;
unsigned int map_flags;
unsigned int inner_map_idx;
unsigned int numa_node;
};
#else
#include <bpf-helpers.h>
#endif
#define BPF_ANNOTATE_KV_PAIR(name, type_key, type_val) \
struct ____btf_map_##name \
{ \
type_key key; \
type_val value; \
}; \
struct ____btf_map_##name \
__attribute__((section(".maps." #name), used)) \
____btf_map_##name = {}
static int (*bpf_skb_load_bytes)(void *ctx, int off, void *to, int len) =
(void *)BPF_FUNC_skb_load_bytes;
static int (*bpf_skb_load_bytes_relative)(void *ctx, int off, void *to, int len, __u32 start_header) =
(void *)BPF_FUNC_skb_load_bytes_relative;
static int (*bpf_skb_store_bytes)(void *ctx, int off, void *from, int len, int flags) =
(void *)BPF_FUNC_skb_store_bytes;
static int (*bpf_l3_csum_replace)(void *ctx, int off, int from, int to, int flags) =
(void *)BPF_FUNC_l3_csum_replace;
static int (*bpf_l4_csum_replace)(void *ctx, int off, int from, int to, int flags) =
(void *)BPF_FUNC_l4_csum_replace;
static int (*bpf_csum_diff)(void *from, int from_size, void *to, int to_size, int seed) =
(void *)BPF_FUNC_csum_diff;
static int (*bpf_skb_under_cgroup)(void *ctx, void *map, int index) =
(void *)BPF_FUNC_skb_under_cgroup;
static int (*bpf_skb_change_head)(void *, int len, int flags) =
(void *)BPF_FUNC_skb_change_head;
static int (*bpf_skb_pull_data)(void *, int len) =
(void *)BPF_FUNC_skb_pull_data;
static unsigned int (*bpf_get_cgroup_classid)(void *ctx) =
(void *)BPF_FUNC_get_cgroup_classid;
static unsigned int (*bpf_get_route_realm)(void *ctx) =
(void *)BPF_FUNC_get_route_realm;
static int (*bpf_skb_change_proto)(void *ctx, __be16 proto, __u64 flags) =
(void *)BPF_FUNC_skb_change_proto;
static int (*bpf_skb_change_type)(void *ctx, __u32 type) =
(void *)BPF_FUNC_skb_change_type;
static unsigned int (*bpf_get_hash_recalc)(void *ctx) =
(void *)BPF_FUNC_get_hash_recalc;
static unsigned long long (*bpf_get_current_task)(void) =
(void *)BPF_FUNC_get_current_task;
static int (*bpf_skb_change_tail)(void *ctx, __u32 len, __u64 flags) =
(void *)BPF_FUNC_skb_change_tail;
static long long (*bpf_csum_update)(void *ctx, __u32 csum) =
(void *)BPF_FUNC_csum_update;
static void (*bpf_set_hash_invalid)(void *ctx) =
(void *)BPF_FUNC_set_hash_invalid;
static int (*bpf_get_numa_node_id)(void) =
(void *)BPF_FUNC_get_numa_node_id;
static int (*bpf_probe_read_str)(void *ctx, __u32 size, const void *unsafe_ptr) =
(void *)BPF_FUNC_probe_read_str;
static unsigned int (*bpf_get_socket_uid)(void *ctx) =
(void *)BPF_FUNC_get_socket_uid;
static unsigned int (*bpf_set_hash)(void *ctx, __u32 hash) =
(void *)BPF_FUNC_set_hash;
static int (*bpf_skb_adjust_room)(void *ctx, __s32 len_diff, __u32 mode, unsigned long long flags) =
(void *)BPF_FUNC_skb_adjust_room;
/* Scan the ARCH passed in from ARCH env variable (see Makefile) */
#if defined(__TARGET_ARCH_x86)
#define bpf_target_x86
#define bpf_target_defined
#elif defined(__TARGET_ARCH_s390)
#define bpf_target_s390
#define bpf_target_defined
#elif defined(__TARGET_ARCH_arm)
#define bpf_target_arm
#define bpf_target_defined
#elif defined(__TARGET_ARCH_arm64)
#define bpf_target_arm64
#define bpf_target_defined
#elif defined(__TARGET_ARCH_mips)
#define bpf_target_mips
#define bpf_target_defined
#elif defined(__TARGET_ARCH_powerpc)
#define bpf_target_powerpc
#define bpf_target_defined
#elif defined(__TARGET_ARCH_sparc)
#define bpf_target_sparc
#define bpf_target_defined
#else
#undef bpf_target_defined
#endif
/* Fall back to what the compiler says */
#ifndef bpf_target_defined
#if defined(__x86_64__)
#define bpf_target_x86
#elif defined(__s390__)
#define bpf_target_s390
#elif defined(__arm__)
#define bpf_target_arm
#elif defined(__aarch64__)
#define bpf_target_arm64
#elif defined(__mips__)
#define bpf_target_mips
#elif defined(__powerpc__)
#define bpf_target_powerpc
#elif defined(__sparc__)
#define bpf_target_sparc
#endif
#endif
#if defined(bpf_target_x86)
#ifdef __KERNEL__
#define PT_REGS_PARM1(x) ((x)->di)
#define PT_REGS_PARM2(x) ((x)->si)
#define PT_REGS_PARM3(x) ((x)->dx)
#define PT_REGS_PARM4(x) ((x)->cx)
#define PT_REGS_PARM5(x) ((x)->r8)
#define PT_REGS_RET(x) ((x)->sp)
#define PT_REGS_FP(x) ((x)->bp)
#define PT_REGS_RC(x) ((x)->ax)
#define PT_REGS_SP(x) ((x)->sp)
#define PT_REGS_IP(x) ((x)->ip)
#else
#ifdef __i386__
/* i386 kernel is built with -mregparm=3 */
#define PT_REGS_PARM1(x) ((x)->eax)
#define PT_REGS_PARM2(x) ((x)->edx)
#define PT_REGS_PARM3(x) ((x)->ecx)
#define PT_REGS_PARM4(x) 0
#define PT_REGS_PARM5(x) 0
#define PT_REGS_RET(x) ((x)->esp)
#define PT_REGS_FP(x) ((x)->ebp)
#define PT_REGS_RC(x) ((x)->eax)
#define PT_REGS_SP(x) ((x)->esp)
#define PT_REGS_IP(x) ((x)->eip)
#else
#define PT_REGS_PARM1(x) ((x)->rdi)
#define PT_REGS_PARM2(x) ((x)->rsi)
#define PT_REGS_PARM3(x) ((x)->rdx)
#define PT_REGS_PARM4(x) ((x)->rcx)
#define PT_REGS_PARM5(x) ((x)->r8)
#define PT_REGS_RET(x) ((x)->rsp)
#define PT_REGS_FP(x) ((x)->rbp)
#define PT_REGS_RC(x) ((x)->rax)
#define PT_REGS_SP(x) ((x)->rsp)
#define PT_REGS_IP(x) ((x)->rip)
#endif
#endif
#elif defined(bpf_target_s390)
/* s390 provides user_pt_regs instead of struct pt_regs to userspace */
struct pt_regs;
#define PT_REGS_S390 const volatile user_pt_regs
#define PT_REGS_PARM1(x) (((PT_REGS_S390 *)(x))->gprs[2])
#define PT_REGS_PARM2(x) (((PT_REGS_S390 *)(x))->gprs[3])
#define PT_REGS_PARM3(x) (((PT_REGS_S390 *)(x))->gprs[4])
#define PT_REGS_PARM4(x) (((PT_REGS_S390 *)(x))->gprs[5])
#define PT_REGS_PARM5(x) (((PT_REGS_S390 *)(x))->gprs[6])
#define PT_REGS_RET(x) (((PT_REGS_S390 *)(x))->gprs[14])
/* Works only with CONFIG_FRAME_POINTER */
#define PT_REGS_FP(x) (((PT_REGS_S390 *)(x))->gprs[11])
#define PT_REGS_RC(x) (((PT_REGS_S390 *)(x))->gprs[2])
#define PT_REGS_SP(x) (((PT_REGS_S390 *)(x))->gprs[15])
#define PT_REGS_IP(x) (((PT_REGS_S390 *)(x))->psw.addr)
#elif defined(bpf_target_arm)
#define PT_REGS_PARM1(x) ((x)->uregs[0])
#define PT_REGS_PARM2(x) ((x)->uregs[1])
#define PT_REGS_PARM3(x) ((x)->uregs[2])
#define PT_REGS_PARM4(x) ((x)->uregs[3])
#define PT_REGS_PARM5(x) ((x)->uregs[4])
#define PT_REGS_RET(x) ((x)->uregs[14])
#define PT_REGS_FP(x) ((x)->uregs[11]) /* Works only with CONFIG_FRAME_POINTER */
#define PT_REGS_RC(x) ((x)->uregs[0])
#define PT_REGS_SP(x) ((x)->uregs[13])
#define PT_REGS_IP(x) ((x)->uregs[12])
#elif defined(bpf_target_arm64)
/* arm64 provides struct user_pt_regs instead of struct pt_regs to userspace */
struct pt_regs;
#define PT_REGS_ARM64 const volatile struct user_pt_regs
#define PT_REGS_PARM1(x) (((PT_REGS_ARM64 *)(x))->regs[0])
#define PT_REGS_PARM2(x) (((PT_REGS_ARM64 *)(x))->regs[1])
#define PT_REGS_PARM3(x) (((PT_REGS_ARM64 *)(x))->regs[2])
#define PT_REGS_PARM4(x) (((PT_REGS_ARM64 *)(x))->regs[3])
#define PT_REGS_PARM5(x) (((PT_REGS_ARM64 *)(x))->regs[4])
#define PT_REGS_RET(x) (((PT_REGS_ARM64 *)(x))->regs[30])
/* Works only with CONFIG_FRAME_POINTER */
#define PT_REGS_FP(x) (((PT_REGS_ARM64 *)(x))->regs[29])
#define PT_REGS_RC(x) (((PT_REGS_ARM64 *)(x))->regs[0])
#define PT_REGS_SP(x) (((PT_REGS_ARM64 *)(x))->sp)
#define PT_REGS_IP(x) (((PT_REGS_ARM64 *)(x))->pc)
#elif defined(bpf_target_mips)
#define PT_REGS_PARM1(x) ((x)->regs[4])
#define PT_REGS_PARM2(x) ((x)->regs[5])
#define PT_REGS_PARM3(x) ((x)->regs[6])
#define PT_REGS_PARM4(x) ((x)->regs[7])
#define PT_REGS_PARM5(x) ((x)->regs[8])
#define PT_REGS_RET(x) ((x)->regs[31])
#define PT_REGS_FP(x) ((x)->regs[30]) /* Works only with CONFIG_FRAME_POINTER */
#define PT_REGS_RC(x) ((x)->regs[1])
#define PT_REGS_SP(x) ((x)->regs[29])
#define PT_REGS_IP(x) ((x)->cp0_epc)
#elif defined(bpf_target_powerpc)
#define PT_REGS_PARM1(x) ((x)->gpr[3])
#define PT_REGS_PARM2(x) ((x)->gpr[4])
#define PT_REGS_PARM3(x) ((x)->gpr[5])
#define PT_REGS_PARM4(x) ((x)->gpr[6])
#define PT_REGS_PARM5(x) ((x)->gpr[7])
#define PT_REGS_RC(x) ((x)->gpr[3])
#define PT_REGS_SP(x) ((x)->sp)
#define PT_REGS_IP(x) ((x)->nip)
#elif defined(bpf_target_sparc)
#define PT_REGS_PARM1(x) ((x)->u_regs[UREG_I0])
#define PT_REGS_PARM2(x) ((x)->u_regs[UREG_I1])
#define PT_REGS_PARM3(x) ((x)->u_regs[UREG_I2])
#define PT_REGS_PARM4(x) ((x)->u_regs[UREG_I3])
#define PT_REGS_PARM5(x) ((x)->u_regs[UREG_I4])
#define PT_REGS_RET(x) ((x)->u_regs[UREG_I7])
#define PT_REGS_RC(x) ((x)->u_regs[UREG_I0])
#define PT_REGS_SP(x) ((x)->u_regs[UREG_FP])
/* Should this also be a bpf_target check for the sparc case? */
#if defined(__arch64__)
#define PT_REGS_IP(x) ((x)->tpc)
#else
#define PT_REGS_IP(x) ((x)->pc)
#endif
#endif
#if defined(bpf_target_powerpc)
#define BPF_KPROBE_READ_RET_IP(ip, ctx) ({ (ip) = (ctx)->link; })
#define BPF_KRETPROBE_READ_RET_IP BPF_KPROBE_READ_RET_IP
#elif defined(bpf_target_sparc)
#define BPF_KPROBE_READ_RET_IP(ip, ctx) ({ (ip) = PT_REGS_RET(ctx); })
#define BPF_KRETPROBE_READ_RET_IP BPF_KPROBE_READ_RET_IP
#else
#define BPF_KPROBE_READ_RET_IP(ip, ctx) ({ bpf_probe_read(&(ip), sizeof(ip), (void *)PT_REGS_RET(ctx)); })
#define BPF_KRETPROBE_READ_RET_IP(ip, ctx) ({ bpf_probe_read(&(ip), sizeof(ip), (void *)(PT_REGS_FP(ctx) + sizeof(ip))); })
#endif
/*
* BPF_CORE_READ abstracts away bpf_probe_read() call and captures offset
* relocation for source address using __builtin_preserve_access_index()
* built-in, provided by Clang.
*
* __builtin_preserve_access_index() takes as an argument an expression of
* taking an address of a field within struct/union. It makes compiler emit
* a relocation, which records BTF type ID describing root struct/union and an
* accessor string which describes exact embedded field that was used to take
* an address. See detailed description of this relocation format and
* semantics in comments to struct bpf_offset_reloc in libbpf_internal.h.
*
* This relocation allows libbpf to adjust BPF instruction to use correct
* actual field offset, based on target kernel BTF type that matches original
* (local) BTF, used to record relocation.
*/
#define BPF_CORE_READ(dst, src) bpf_probe_read((dst), sizeof(*(src)), __builtin_preserve_access_index(src))
#endif

97
bpf/bpf_obj.c Normal file
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@@ -0,0 +1,97 @@
#include <errno.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <linux/if_tun.h>
#include "bpf_config_user.h"
#define MIN(a, b) ((a) > (b) ? (b) : (a))
struct bpf_obj_ctx
{
char obj_file[1024];
struct bpf_config config;
int prog_fd;
struct bpf_object *prog_obj;
};
void bpf_obj_unload(struct bpf_obj_ctx *ctx)
{
if (ctx)
{
if (ctx->prog_fd > 0)
{
close(ctx->prog_fd);
}
if (ctx->prog_obj)
{
bpf_object__close(ctx->prog_obj);
ctx->prog_obj = NULL;
}
free(ctx);
ctx = NULL;
}
}
/*
* queue_num : same as worker thread number
* hash_mode : 2: hash with src/dst addr
* 4: hash with src/dst addr and src/dst port
* debug_log : 0 for disable(only use for debug, printf bpf debug log(cat /sys/kernel/debug/tracing/trace_pipe)
*/
struct bpf_obj_ctx *bpf_obj_load(const char *obj_file, uint32_t queue_num, uint32_t hash_mode, uint32_t debug_log)
{
struct bpf_obj_ctx *ctx = (struct bpf_obj_ctx *)calloc(1, sizeof(struct bpf_obj_ctx));
strncpy(ctx->obj_file, obj_file, MIN(strlen(obj_file), sizeof(ctx->obj_file)));
bpf_config_set_queue_num(&ctx->config, queue_num);
bpf_config_set_hash_mode(&ctx->config, hash_mode);
bpf_config_set_debug_log(&ctx->config, debug_log);
if (bpf_prog_load(ctx->obj_file, BPF_PROG_TYPE_SOCKET_FILTER, &ctx->prog_obj, &ctx->prog_fd) < 0)
{
printf("ERROR: Unable to load bpf object %s, %s.\n", ctx->obj_file, strerror(errno));
goto error;
}
if (bpf_config_update_map(&ctx->config, ctx->prog_obj) == -1)
{
goto error;
}
return ctx;
error:
bpf_obj_unload(ctx);
return NULL;
}
/*
* return 0 : success
* return -1 : error
*/
int bpf_obj_attach(struct bpf_obj_ctx *ctx, int fd)
{
if (ctx && ctx->prog_fd > 0)
{
if (ioctl(fd, TUNSETSTEERINGEBPF, (void *)&ctx->prog_fd) == -1)
{
printf("ERROR: Unable to set bpf on sockfd %d, %s.\n", fd, strerror(errno));
return -1;
}
else
{
printf("Set TUNSETSTEERINGEBPF on fd: %d\n", fd);
return 0;
}
}
else
{
return -1;
}
}

31
bpf/bpf_obj.h Normal file
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#ifndef _BPF_OBJ_H_
#define _BPF_OBJ_H_
#ifdef __cplusplus
extern "C"
{
#endif
#include <stdint.h>
struct bpf_obj_ctx;
/*
* queue_num : same as worker thread number
* hash_mode : 2: hash with src/dst addr
* 4: hash with src/dst addr and src/dst port
* debug_log : 0 for disable(only use for debug, printf bpf debug log(cat /sys/kernel/debug/tracing/trace_pipe)
*/
struct bpf_obj_ctx *bpf_obj_load(const char *obj_file, uint32_t queue_num, uint32_t hash_mode, uint32_t debug_log);
void bpf_obj_unload(struct bpf_obj_ctx *ctx);
/*
* return 0 : success
* return -1 : error
*/
int bpf_obj_attach(struct bpf_obj_ctx *ctx, int fd);
#ifdef __cplusplus
}
#endif
#endif

413
bpf/bpf_tun_rss_steering.c Normal file
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#include <linux/in.h>
#include <linux/udp.h>
#include <linux/tcp.h>
#include <linux/ip.h>
#include <linux/ipv6.h>
#include <linux/if_ether.h>
#include "libendian.h"
#include "crc32_hash.h"
#include "bpf_config_kernel.h"
#define IP6_EXTENSIONS_COUNT 11
struct packet
{
__u8 is_ipv4;
__u8 is_ipv6;
__u8 is_udp;
__u8 is_tcp;
__u8 is_fragmented;
__u16 src_port;
__u16 dst_port;
__u32 in4_src;
__u32 in4_dst;
struct in6_addr in6_src;
struct in6_addr in6_dst;
__u32 src_addr_hash;
__u32 dst_addr_hash;
__u32 src_port_hash;
__u32 dst_port_hash;
__u32 last_hash;
int select_queue;
struct __sk_buff *skb;
};
static inline void dump_ipv4_header(struct packet *packet, struct iphdr *ip4)
{
bpf_printk("tun_rss_steering: ipv4 %p src_addr ip[0-1]: %d.%d", packet->skb, (packet->in4_src) & 0xFF, (packet->in4_src >> 8) & 0xFF);
bpf_printk("tun_rss_steering: ipv4 %p src_addr ip[2-3]: %d.%d", packet->skb, (packet->in4_src >> 16) & 0xFF, (packet->in4_src >> 24) & 0xFF);
bpf_printk("tun_rss_steering: ipv4 %p dst_addr ip[0-1]: %d.%d", packet->skb, (packet->in4_dst) & 0xFF, (packet->in4_dst >> 8) & 0xFF);
bpf_printk("tun_rss_steering: ipv4 %p dst_addr ip[2-3]: %d.%d", packet->skb, (packet->in4_dst >> 16) & 0xFF, (packet->in4_dst >> 24) & 0xFF);
char *ptr = (char *)ip4;
int len = sizeof(*ip4);
for (int i = 0; i < len; i++)
{
bpf_printk("tun_rss_steering: ipv4 %p header hex[%d]: %0x", packet->skb, i, ptr[i]);
}
}
static inline void dump_ipv6_packet(struct packet *packet, struct ipv6hdr *ip6)
{
bpf_printk("tun_rss_steering: ipv6 %p src_addr ip[0-1]: %x:%x", packet->skb, bpf_ntohs(packet->in6_src.s6_addr16[0]), bpf_ntohs(packet->in6_src.s6_addr16[1]));
bpf_printk("tun_rss_steering: ipv6 %p src_addr ip[2-3]: %x:%x", packet->skb, bpf_ntohs(packet->in6_src.s6_addr16[2]), bpf_ntohs(packet->in6_src.s6_addr16[3]));
bpf_printk("tun_rss_steering: ipv6 %p src_addr ip[4-5]: %x:%x", packet->skb, bpf_ntohs(packet->in6_src.s6_addr16[4]), bpf_ntohs(packet->in6_src.s6_addr16[5]));
bpf_printk("tun_rss_steering: ipv6 %p src_addr ip[6-7]: %x:%x", packet->skb, bpf_ntohs(packet->in6_src.s6_addr16[6]), bpf_ntohs(packet->in6_src.s6_addr16[7]));
bpf_printk("tun_rss_steering: ipv6 %p dst_addr ip[0-1]: %x:%x", packet->skb, bpf_ntohs(packet->in6_dst.s6_addr16[0]), bpf_ntohs(packet->in6_dst.s6_addr16[1]));
bpf_printk("tun_rss_steering: ipv6 %p dst_addr ip[2-3]: %x:%x", packet->skb, bpf_ntohs(packet->in6_dst.s6_addr16[2]), bpf_ntohs(packet->in6_dst.s6_addr16[3]));
bpf_printk("tun_rss_steering: ipv6 %p dst_addr ip[4-5]: %x:%x", packet->skb, bpf_ntohs(packet->in6_dst.s6_addr16[4]), bpf_ntohs(packet->in6_dst.s6_addr16[5]));
bpf_printk("tun_rss_steering: ipv6 %p dst_addr ip[6-7]: %x:%x", packet->skb, bpf_ntohs(packet->in6_dst.s6_addr16[6]), bpf_ntohs(packet->in6_dst.s6_addr16[7]));
char *ptr = (char *)ip6;
int len = sizeof(*ip6);
for (int i = 0; i < len; i++)
{
bpf_printk("tun_rss_steering: ipv6 %p header hex[%d]: %0x", packet->skb, i, ptr[i]);
}
}
static inline void dump_packet_info(struct packet *packet, struct bpf_config *config)
{
if (packet->is_ipv4)
{
bpf_printk("tun_rss_steering ipv4 %p src_addr ip[0-1]: %d.%d", packet->skb, (packet->in4_src) & 0xFF, (packet->in4_src >> 8) & 0xFF);
bpf_printk("tun_rss_steering ipv4 %p src_addr ip[2-3]: %d.%d", packet->skb, (packet->in4_src >> 16) & 0xFF, (packet->in4_src >> 24) & 0xFF);
bpf_printk("tun_rss_steering ipv4 %p dst_addr ip[0-1]: %d.%d", packet->skb, (packet->in4_dst) & 0xFF, (packet->in4_dst >> 8) & 0xFF);
bpf_printk("tun_rss_steering ipv4 %p dst_addr ip[2-3]: %d.%d", packet->skb, (packet->in4_dst >> 16) & 0xFF, (packet->in4_dst >> 24) & 0xFF);
bpf_printk("tun_rss_steering ipv4 %p src_port: %d dst_port: %d", packet->skb, bpf_ntohs(packet->src_port), bpf_ntohs(packet->dst_port));
bpf_printk("tun_rss_steering ipv4 %p src_addr_hash: %d dst_addr_hash: %d", packet->skb, packet->src_addr_hash, packet->dst_addr_hash);
bpf_printk("tun_rss_steering ipv4 %p src_port_hash: %d dst_port_hash: %d", packet->skb, packet->src_port_hash, packet->dst_port_hash);
bpf_printk("tun_rss_steering ipv4 %p last_hash: %d select_queue: %d", packet->skb, packet->last_hash, packet->select_queue);
}
if (packet->is_ipv6)
{
bpf_printk("tun_rss_steering ipv6 %p src_addr ip[0-1]: %x:%x", packet->skb, bpf_ntohs(packet->in6_src.s6_addr16[0]), bpf_ntohs(packet->in6_src.s6_addr16[1]));
bpf_printk("tun_rss_steering ipv6 %p src_addr ip[2-3]: %x:%x", packet->skb, bpf_ntohs(packet->in6_src.s6_addr16[2]), bpf_ntohs(packet->in6_src.s6_addr16[3]));
bpf_printk("tun_rss_steering ipv6 %p src_addr ip[4-5]: %x:%x", packet->skb, bpf_ntohs(packet->in6_src.s6_addr16[4]), bpf_ntohs(packet->in6_src.s6_addr16[5]));
bpf_printk("tun_rss_steering ipv6 %p src_addr ip[6-7]: %x:%x", packet->skb, bpf_ntohs(packet->in6_src.s6_addr16[6]), bpf_ntohs(packet->in6_src.s6_addr16[7]));
bpf_printk("tun_rss_steering ipv6 %p dst_addr ip[0-1]: %x:%x", packet->skb, bpf_ntohs(packet->in6_dst.s6_addr16[0]), bpf_ntohs(packet->in6_dst.s6_addr16[1]));
bpf_printk("tun_rss_steering ipv6 %p dst_addr ip[2-3]: %x:%x", packet->skb, bpf_ntohs(packet->in6_dst.s6_addr16[2]), bpf_ntohs(packet->in6_dst.s6_addr16[3]));
bpf_printk("tun_rss_steering ipv6 %p dst_addr ip[4-5]: %x:%x", packet->skb, bpf_ntohs(packet->in6_dst.s6_addr16[4]), bpf_ntohs(packet->in6_dst.s6_addr16[5]));
bpf_printk("tun_rss_steering ipv6 %p dst_addr ip[6-7]: %x:%x", packet->skb, bpf_ntohs(packet->in6_dst.s6_addr16[6]), bpf_ntohs(packet->in6_dst.s6_addr16[7]));
bpf_printk("tun_rss_steering ipv6 %p src_port: %d dst_port: %d", packet->skb, bpf_ntohs(packet->src_port), bpf_ntohs(packet->dst_port));
bpf_printk("tun_rss_steering ipv6 %p src_addr_hash: %d dst_addr_hash: %d", packet->skb, packet->src_addr_hash, packet->dst_addr_hash);
bpf_printk("tun_rss_steering ipv6 %p src_port_hash: %d dst_port_hash: %d", packet->skb, packet->src_port_hash, packet->dst_port_hash);
bpf_printk("tun_rss_steering ipv6 %p last_hash: %d select_queue: %d", packet->skb, packet->last_hash, packet->select_queue);
}
}
static inline void dump_config_info(struct bpf_config *config)
{
if (bpf_config_get_debug_log(config))
{
bpf_printk("tun_rss_steering: config->bpf_debug_log %d", bpf_config_get_debug_log(config));
bpf_printk("tun_rss_steering: config->bpf_queue_num %d", bpf_config_get_queue_num(config));
bpf_printk("tun_rss_steering: config->bpf_hash_mode %d", bpf_config_get_hash_mode(config));
}
}
/*
* reutrn 1: 表示不需要处理扩展头
* return 0: 表示需要处理扩展头
*/
static inline int ipv6_extension_need_skip(__u8 hdr_type)
{
/*
* TODO
* 因为 kni_ipv6_header_parse() 中只处理了以下 4 种 IPv6 扩展头部：
* IPPROTO_AH
* IPPROTO_HOPOPTS
* IPPROTO_ROUTING
* IPPROTO_DSTOPTS
*
* 即 KNI 回流给 TFE 的 IPv6 流量中只支持以上 4 种 IPv6 扩展头部。
* 当 TFE 回注给 KNI 的 IPv6 流量中不会出现其他 IPv6 扩展头部，故此处 BPF 只处理这 4 种 IPv6 扩展头部。
*
* 由于 BPF 要支持四元组分流，所以要判断 IPv6 是否分片，故此处要处理 IPPROTO_FRAGMENT IPv6 扩展头部。
*/
switch (hdr_type)
{
case IPPROTO_AH:
case IPPROTO_HOPOPTS:
case IPPROTO_ROUTING:
case IPPROTO_DSTOPTS:
case IPPROTO_FRAGMENT:
return 0;
default:
return 1;
}
}
static inline int parse_ipv6_extension(struct packet *packet, __u8 *l4_protocol, int *l4_offset)
{
if (ipv6_extension_need_skip(*l4_protocol))
{
return 0;
}
struct ipv6_opt_hdr ext_hdr = {0};
for (unsigned int i = 0; i < IP6_EXTENSIONS_COUNT; ++i)
{
if (bpf_skb_load_bytes_relative(packet->skb, *l4_offset, &ext_hdr, sizeof(ext_hdr), BPF_HDR_START_NET))
{
bpf_printk("tun_rss_steering: unable get ipv6 ext header");
return -1;
}
if (*l4_protocol == IPPROTO_FRAGMENT)
{
packet->is_fragmented = 1;
}
*l4_protocol = ext_hdr.nexthdr;
*l4_offset += (ext_hdr.hdrlen + 1) * 8;
if (ipv6_extension_need_skip(ext_hdr.nexthdr))
{
return 0;
}
}
return -1;
}
static inline int parse_packet(struct packet *packet, struct bpf_config *config)
{
int l3_offset = 12;
int l4_offset = 0;
__u8 l4_protocol = 0;
__u16 l3_protocol = 0;
if (!packet || !packet->skb)
{
bpf_printk("tun_rss_steering: invalid __sk_buff pointer");
return -1;
}
if (bpf_skb_load_bytes_relative(packet->skb, l3_offset, &l3_protocol, sizeof(l3_protocol), BPF_HDR_START_MAC))
{
bpf_printk("tun_rss_steering: unable get l3 protocol");
return -1;
}
if (bpf_ntohs(l3_protocol) == ETH_P_IP)
{
packet->is_ipv4 = 1;
struct iphdr ip = {0};
if (bpf_skb_load_bytes_relative(packet->skb, 0, &ip, sizeof(ip), BPF_HDR_START_NET))
{
bpf_printk("tun_rss_steering: unable get ipv4 header");
return -1;
}
packet->in4_src = ip.saddr;
packet->in4_dst = ip.daddr;
/*
* The frag_off portion of the header consists of:
* +----+----+----+----------------------------------+
* | RS | DF | MF | ...13 bits of fragment offset... |
* +----+----+----+----------------------------------+
* If "More fragments" or the offset is nonzero, then this is an IP fragment (RFC791).
*/
packet->is_fragmented = !(bpf_ntohs(ip.frag_off) & 0x4000);
l4_protocol = ip.protocol;
l4_offset = ip.ihl * 4;
if (packet->is_fragmented)
{
bpf_printk("tun_rss_steering: ipv4 %p is fragmented", packet->skb);
if (bpf_config_get_debug_log(config))
{
dump_ipv4_header(packet, &ip);
}
return -1;
}
}
else if (bpf_ntohs(l3_protocol) == ETH_P_IPV6)
{
packet->is_ipv6 = 1;
struct ipv6hdr ip6 = {0};
if (bpf_skb_load_bytes_relative(packet->skb, 0, &ip6, sizeof(ip6), BPF_HDR_START_NET))
{
bpf_printk("tun_rss_steering: unable get ipv6 header");
return -1;
}
packet->in6_src = ip6.saddr;
packet->in6_dst = ip6.daddr;
l4_protocol = ip6.nexthdr;
l4_offset = sizeof(ip6);
if (parse_ipv6_extension(packet, &l4_protocol, &l4_offset) == -1)
{
return -1;
}
if (packet->is_fragmented)
{
bpf_printk("tun_rss_steering: ipv6 %p is fragmented", packet->skb);
if (bpf_config_get_debug_log(config))
{
dump_ipv6_packet(packet, &ip6);
}
return -1;
}
}
else
{
bpf_printk("tun_rss_steering: invalid l3 protocol %d", bpf_ntohs(l3_protocol));
return -1;
}
if (l4_protocol == IPPROTO_TCP)
{
packet->is_tcp = 1;
struct tcphdr tcp = {0};
if (bpf_skb_load_bytes_relative(packet->skb, l4_offset, &tcp, sizeof(tcp), BPF_HDR_START_NET))
{
bpf_printk("tun_rss_steering: unable get tcp header");
return -1;
}
packet->src_port = tcp.source;
packet->dst_port = tcp.dest;
}
else if (l4_protocol == IPPROTO_UDP)
{
packet->is_udp = 1;
struct udphdr udp = {0};
if (bpf_skb_load_bytes_relative(packet->skb, l4_offset, &udp, sizeof(udp), BPF_HDR_START_NET))
{
bpf_printk("tun_rss_steering: unable get udp header");
return -1;
}
packet->src_port = udp.source;
packet->dst_port = udp.dest;
}
else
{
bpf_printk("tun_rss_steering: invalid l4 protocol %d", l4_protocol);
return -1;
}
return 0;
}
static inline void select_rss_queue(struct packet *packet, struct bpf_config *config)
{
packet->select_queue = -1;
if (packet->is_ipv4)
{
if (bpf_config_get_hash_mode(config) == BPF_HASH_MODE_TUPLE4)
{
packet->src_addr_hash = crc32_hash(&packet->in4_src, 4, 0);
packet->dst_addr_hash = crc32_hash(&packet->in4_dst, 4, 0);
packet->last_hash = packet->src_addr_hash ^ packet->dst_addr_hash;
packet->src_port_hash = crc32_hash(&packet->src_port, 2, packet->last_hash);
packet->dst_port_hash = crc32_hash(&packet->dst_port, 2, packet->last_hash);
packet->last_hash = packet->src_port_hash ^ packet->dst_port_hash;
packet->select_queue = packet->last_hash % bpf_config_get_queue_num(config);
}
else if (bpf_config_get_hash_mode(config) == BPF_HASH_MODE_TUPLE2)
{
packet->src_addr_hash = crc32_hash(&packet->in4_src, 4, 0);
packet->dst_addr_hash = crc32_hash(&packet->in4_dst, 4, 0);
packet->last_hash = packet->src_addr_hash ^ packet->dst_addr_hash;
packet->select_queue = packet->last_hash % bpf_config_get_queue_num(config);
}
}
if (packet->is_ipv6)
{
if (bpf_config_get_hash_mode(config) == BPF_HASH_MODE_TUPLE4)
{
packet->src_addr_hash = crc32_hash(&packet->in6_src, 16, 0);
packet->dst_addr_hash = crc32_hash(&packet->in6_dst, 16, 0);
packet->last_hash = packet->src_addr_hash ^ packet->dst_addr_hash;
packet->src_port_hash = crc32_hash(&packet->src_port, 2, packet->last_hash);
packet->dst_port_hash = crc32_hash(&packet->dst_port, 2, packet->last_hash);
packet->last_hash = packet->src_port_hash ^ packet->dst_port_hash;
packet->select_queue = packet->last_hash % bpf_config_get_queue_num(config);
}
else if (bpf_config_get_hash_mode(config) == BPF_HASH_MODE_TUPLE2)
{
packet->src_addr_hash = crc32_hash(&packet->in6_src, 16, 0);
packet->dst_addr_hash = crc32_hash(&packet->in6_dst, 16, 0);
packet->last_hash = packet->src_addr_hash ^ packet->dst_addr_hash;
packet->select_queue = packet->last_hash % bpf_config_get_queue_num(config);
}
}
}
SEC("tun_rss_steering")
int bpf_tun_rss_steering(struct __sk_buff *skb)
{
struct packet packet = {0};
struct bpf_config config = {0};
bpf_config_lookup_map(&config);
dump_config_info(&config);
if (bpf_config_get_queue_num(&config) <= 0)
{
bpf_printk("tun_rss_steering: invalid queue num %d", bpf_config_get_queue_num(&config));
return 0;
}
if (bpf_config_get_hash_mode(&config) != BPF_HASH_MODE_TUPLE2 && bpf_config_get_hash_mode(&config) != BPF_HASH_MODE_TUPLE4)
{
bpf_printk("tun_rss_steering: invalid hash mode %d", bpf_config_get_hash_mode(&config));
return 0;
}
packet.is_ipv4 = 0;
packet.is_ipv6 = 0;
packet.is_fragmented = 0;
packet.skb = skb;
if (parse_packet(&packet, &config) == -1)
{
return 0;
}
select_rss_queue(&packet, &config);
if (bpf_config_get_debug_log(&config))
{
dump_packet_info(&packet, &config);
}
return packet.select_queue;
}
char _license[] SEC("license") = "GPL";

357
bpf/crc32_hash.h Normal file
View File

@@ -0,0 +1,357 @@
#ifndef _CRC32_HASH_H_
#define _CRC32_HASH_H_
#ifdef __cplusplus
extern "C"
{
#endif
#define CRC32_UPD(crc, n) \
(crc32c_tables[(n)][(crc)&0xFF] ^ \
crc32c_tables[(n)-1][((crc) >> 8) & 0xFF])
static const __u32 crc32c_tables[8][256] = {
{0x00000000, 0xF26B8303, 0xE13B70F7, 0x1350F3F4, 0xC79A971F, 0x35F1141C, 0x26A1E7E8, 0xD4CA64EB,
0x8AD958CF, 0x78B2DBCC, 0x6BE22838, 0x9989AB3B, 0x4D43CFD0, 0xBF284CD3, 0xAC78BF27, 0x5E133C24,
0x105EC76F, 0xE235446C, 0xF165B798, 0x030E349B, 0xD7C45070, 0x25AFD373, 0x36FF2087, 0xC494A384,
0x9A879FA0, 0x68EC1CA3, 0x7BBCEF57, 0x89D76C54, 0x5D1D08BF, 0xAF768BBC, 0xBC267848, 0x4E4DFB4B,
0x20BD8EDE, 0xD2D60DDD, 0xC186FE29, 0x33ED7D2A, 0xE72719C1, 0x154C9AC2, 0x061C6936, 0xF477EA35,
0xAA64D611, 0x580F5512, 0x4B5FA6E6, 0xB93425E5, 0x6DFE410E, 0x9F95C20D, 0x8CC531F9, 0x7EAEB2FA,
0x30E349B1, 0xC288CAB2, 0xD1D83946, 0x23B3BA45, 0xF779DEAE, 0x05125DAD, 0x1642AE59, 0xE4292D5A,
0xBA3A117E, 0x4851927D, 0x5B016189, 0xA96AE28A, 0x7DA08661, 0x8FCB0562, 0x9C9BF696, 0x6EF07595,
0x417B1DBC, 0xB3109EBF, 0xA0406D4B, 0x522BEE48, 0x86E18AA3, 0x748A09A0, 0x67DAFA54, 0x95B17957,
0xCBA24573, 0x39C9C670, 0x2A993584, 0xD8F2B687, 0x0C38D26C, 0xFE53516F, 0xED03A29B, 0x1F682198,
0x5125DAD3, 0xA34E59D0, 0xB01EAA24, 0x42752927, 0x96BF4DCC, 0x64D4CECF, 0x77843D3B, 0x85EFBE38,
0xDBFC821C, 0x2997011F, 0x3AC7F2EB, 0xC8AC71E8, 0x1C661503, 0xEE0D9600, 0xFD5D65F4, 0x0F36E6F7,
0x61C69362, 0x93AD1061, 0x80FDE395, 0x72966096, 0xA65C047D, 0x5437877E, 0x4767748A, 0xB50CF789,
0xEB1FCBAD, 0x197448AE, 0x0A24BB5A, 0xF84F3859, 0x2C855CB2, 0xDEEEDFB1, 0xCDBE2C45, 0x3FD5AF46,
0x7198540D, 0x83F3D70E, 0x90A324FA, 0x62C8A7F9, 0xB602C312, 0x44694011, 0x5739B3E5, 0xA55230E6,
0xFB410CC2, 0x092A8FC1, 0x1A7A7C35, 0xE811FF36, 0x3CDB9BDD, 0xCEB018DE, 0xDDE0EB2A, 0x2F8B6829,
0x82F63B78, 0x709DB87B, 0x63CD4B8F, 0x91A6C88C, 0x456CAC67, 0xB7072F64, 0xA457DC90, 0x563C5F93,
0x082F63B7, 0xFA44E0B4, 0xE9141340, 0x1B7F9043, 0xCFB5F4A8, 0x3DDE77AB, 0x2E8E845F, 0xDCE5075C,
0x92A8FC17, 0x60C37F14, 0x73938CE0, 0x81F80FE3, 0x55326B08, 0xA759E80B, 0xB4091BFF, 0x466298FC,
0x1871A4D8, 0xEA1A27DB, 0xF94AD42F, 0x0B21572C, 0xDFEB33C7, 0x2D80B0C4, 0x3ED04330, 0xCCBBC033,
0xA24BB5A6, 0x502036A5, 0x4370C551, 0xB11B4652, 0x65D122B9, 0x97BAA1BA, 0x84EA524E, 0x7681D14D,
0x2892ED69, 0xDAF96E6A, 0xC9A99D9E, 0x3BC21E9D, 0xEF087A76, 0x1D63F975, 0x0E330A81, 0xFC588982,
0xB21572C9, 0x407EF1CA, 0x532E023E, 0xA145813D, 0x758FE5D6, 0x87E466D5, 0x94B49521, 0x66DF1622,
0x38CC2A06, 0xCAA7A905, 0xD9F75AF1, 0x2B9CD9F2, 0xFF56BD19, 0x0D3D3E1A, 0x1E6DCDEE, 0xEC064EED,
0xC38D26C4, 0x31E6A5C7, 0x22B65633, 0xD0DDD530, 0x0417B1DB, 0xF67C32D8, 0xE52CC12C, 0x1747422F,
0x49547E0B, 0xBB3FFD08, 0xA86F0EFC, 0x5A048DFF, 0x8ECEE914, 0x7CA56A17, 0x6FF599E3, 0x9D9E1AE0,
0xD3D3E1AB, 0x21B862A8, 0x32E8915C, 0xC083125F, 0x144976B4, 0xE622F5B7, 0xF5720643, 0x07198540,
0x590AB964, 0xAB613A67, 0xB831C993, 0x4A5A4A90, 0x9E902E7B, 0x6CFBAD78, 0x7FAB5E8C, 0x8DC0DD8F,
0xE330A81A, 0x115B2B19, 0x020BD8ED, 0xF0605BEE, 0x24AA3F05, 0xD6C1BC06, 0xC5914FF2, 0x37FACCF1,
0x69E9F0D5, 0x9B8273D6, 0x88D28022, 0x7AB90321, 0xAE7367CA, 0x5C18E4C9, 0x4F48173D, 0xBD23943E,
0xF36E6F75, 0x0105EC76, 0x12551F82, 0xE03E9C81, 0x34F4F86A, 0xC69F7B69, 0xD5CF889D, 0x27A40B9E,
0x79B737BA, 0x8BDCB4B9, 0x988C474D, 0x6AE7C44E, 0xBE2DA0A5, 0x4C4623A6, 0x5F16D052, 0xAD7D5351},
{0x00000000, 0x13A29877, 0x274530EE, 0x34E7A899, 0x4E8A61DC, 0x5D28F9AB, 0x69CF5132, 0x7A6DC945,
0x9D14C3B8, 0x8EB65BCF, 0xBA51F356, 0xA9F36B21, 0xD39EA264, 0xC03C3A13, 0xF4DB928A, 0xE7790AFD,
0x3FC5F181, 0x2C6769F6, 0x1880C16F, 0x0B225918, 0x714F905D, 0x62ED082A, 0x560AA0B3, 0x45A838C4,
0xA2D13239, 0xB173AA4E, 0x859402D7, 0x96369AA0, 0xEC5B53E5, 0xFFF9CB92, 0xCB1E630B, 0xD8BCFB7C,
0x7F8BE302, 0x6C297B75, 0x58CED3EC, 0x4B6C4B9B, 0x310182DE, 0x22A31AA9, 0x1644B230, 0x05E62A47,
0xE29F20BA, 0xF13DB8CD, 0xC5DA1054, 0xD6788823, 0xAC154166, 0xBFB7D911, 0x8B507188, 0x98F2E9FF,
0x404E1283, 0x53EC8AF4, 0x670B226D, 0x74A9BA1A, 0x0EC4735F, 0x1D66EB28, 0x298143B1, 0x3A23DBC6,
0xDD5AD13B, 0xCEF8494C, 0xFA1FE1D5, 0xE9BD79A2, 0x93D0B0E7, 0x80722890, 0xB4958009, 0xA737187E,
0xFF17C604, 0xECB55E73, 0xD852F6EA, 0xCBF06E9D, 0xB19DA7D8, 0xA23F3FAF, 0x96D89736, 0x857A0F41,
0x620305BC, 0x71A19DCB, 0x45463552, 0x56E4AD25, 0x2C896460, 0x3F2BFC17, 0x0BCC548E, 0x186ECCF9,
0xC0D23785, 0xD370AFF2, 0xE797076B, 0xF4359F1C, 0x8E585659, 0x9DFACE2E, 0xA91D66B7, 0xBABFFEC0,
0x5DC6F43D, 0x4E646C4A, 0x7A83C4D3, 0x69215CA4, 0x134C95E1, 0x00EE0D96, 0x3409A50F, 0x27AB3D78,
0x809C2506, 0x933EBD71, 0xA7D915E8, 0xB47B8D9F, 0xCE1644DA, 0xDDB4DCAD, 0xE9537434, 0xFAF1EC43,
0x1D88E6BE, 0x0E2A7EC9, 0x3ACDD650, 0x296F4E27, 0x53028762, 0x40A01F15, 0x7447B78C, 0x67E52FFB,
0xBF59D487, 0xACFB4CF0, 0x981CE469, 0x8BBE7C1E, 0xF1D3B55B, 0xE2712D2C, 0xD69685B5, 0xC5341DC2,
0x224D173F, 0x31EF8F48, 0x050827D1, 0x16AABFA6, 0x6CC776E3, 0x7F65EE94, 0x4B82460D, 0x5820DE7A,
0xFBC3FAF9, 0xE861628E, 0xDC86CA17, 0xCF245260, 0xB5499B25, 0xA6EB0352, 0x920CABCB, 0x81AE33BC,
0x66D73941, 0x7575A136, 0x419209AF, 0x523091D8, 0x285D589D, 0x3BFFC0EA, 0x0F186873, 0x1CBAF004,
0xC4060B78, 0xD7A4930F, 0xE3433B96, 0xF0E1A3E1, 0x8A8C6AA4, 0x992EF2D3, 0xADC95A4A, 0xBE6BC23D,
0x5912C8C0, 0x4AB050B7, 0x7E57F82E, 0x6DF56059, 0x1798A91C, 0x043A316B, 0x30DD99F2, 0x237F0185,
0x844819FB, 0x97EA818C, 0xA30D2915, 0xB0AFB162, 0xCAC27827, 0xD960E050, 0xED8748C9, 0xFE25D0BE,
0x195CDA43, 0x0AFE4234, 0x3E19EAAD, 0x2DBB72DA, 0x57D6BB9F, 0x447423E8, 0x70938B71, 0x63311306,
0xBB8DE87A, 0xA82F700D, 0x9CC8D894, 0x8F6A40E3, 0xF50789A6, 0xE6A511D1, 0xD242B948, 0xC1E0213F,
0x26992BC2, 0x353BB3B5, 0x01DC1B2C, 0x127E835B, 0x68134A1E, 0x7BB1D269, 0x4F567AF0, 0x5CF4E287,
0x04D43CFD, 0x1776A48A, 0x23910C13, 0x30339464, 0x4A5E5D21, 0x59FCC556, 0x6D1B6DCF, 0x7EB9F5B8,
0x99C0FF45, 0x8A626732, 0xBE85CFAB, 0xAD2757DC, 0xD74A9E99, 0xC4E806EE, 0xF00FAE77, 0xE3AD3600,
0x3B11CD7C, 0x28B3550B, 0x1C54FD92, 0x0FF665E5, 0x759BACA0, 0x663934D7, 0x52DE9C4E, 0x417C0439,
0xA6050EC4, 0xB5A796B3, 0x81403E2A, 0x92E2A65D, 0xE88F6F18, 0xFB2DF76F, 0xCFCA5FF6, 0xDC68C781,
0x7B5FDFFF, 0x68FD4788, 0x5C1AEF11, 0x4FB87766, 0x35D5BE23, 0x26772654, 0x12908ECD, 0x013216BA,
0xE64B1C47, 0xF5E98430, 0xC10E2CA9, 0xD2ACB4DE, 0xA8C17D9B, 0xBB63E5EC, 0x8F844D75, 0x9C26D502,
0x449A2E7E, 0x5738B609, 0x63DF1E90, 0x707D86E7, 0x0A104FA2, 0x19B2D7D5, 0x2D557F4C, 0x3EF7E73B,
0xD98EEDC6, 0xCA2C75B1, 0xFECBDD28, 0xED69455F, 0x97048C1A, 0x84A6146D, 0xB041BCF4, 0xA3E32483},
{0x00000000, 0xA541927E, 0x4F6F520D, 0xEA2EC073, 0x9EDEA41A, 0x3B9F3664, 0xD1B1F617, 0x74F06469,
0x38513EC5, 0x9D10ACBB, 0x773E6CC8, 0xD27FFEB6, 0xA68F9ADF, 0x03CE08A1, 0xE9E0C8D2, 0x4CA15AAC,
0x70A27D8A, 0xD5E3EFF4, 0x3FCD2F87, 0x9A8CBDF9, 0xEE7CD990, 0x4B3D4BEE, 0xA1138B9D, 0x045219E3,
0x48F3434F, 0xEDB2D131, 0x079C1142, 0xA2DD833C, 0xD62DE755, 0x736C752B, 0x9942B558, 0x3C032726,
0xE144FB14, 0x4405696A, 0xAE2BA919, 0x0B6A3B67, 0x7F9A5F0E, 0xDADBCD70, 0x30F50D03, 0x95B49F7D,
0xD915C5D1, 0x7C5457AF, 0x967A97DC, 0x333B05A2, 0x47CB61CB, 0xE28AF3B5, 0x08A433C6, 0xADE5A1B8,
0x91E6869E, 0x34A714E0, 0xDE89D493, 0x7BC846ED, 0x0F382284, 0xAA79B0FA, 0x40577089, 0xE516E2F7,
0xA9B7B85B, 0x0CF62A25, 0xE6D8EA56, 0x43997828, 0x37691C41, 0x92288E3F, 0x78064E4C, 0xDD47DC32,
0xC76580D9, 0x622412A7, 0x880AD2D4, 0x2D4B40AA, 0x59BB24C3, 0xFCFAB6BD, 0x16D476CE, 0xB395E4B0,
0xFF34BE1C, 0x5A752C62, 0xB05BEC11, 0x151A7E6F, 0x61EA1A06, 0xC4AB8878, 0x2E85480B, 0x8BC4DA75,
0xB7C7FD53, 0x12866F2D, 0xF8A8AF5E, 0x5DE93D20, 0x29195949, 0x8C58CB37, 0x66760B44, 0xC337993A,
0x8F96C396, 0x2AD751E8, 0xC0F9919B, 0x65B803E5, 0x1148678C, 0xB409F5F2, 0x5E273581, 0xFB66A7FF,
0x26217BCD, 0x8360E9B3, 0x694E29C0, 0xCC0FBBBE, 0xB8FFDFD7, 0x1DBE4DA9, 0xF7908DDA, 0x52D11FA4,
0x1E704508, 0xBB31D776, 0x511F1705, 0xF45E857B, 0x80AEE112, 0x25EF736C, 0xCFC1B31F, 0x6A802161,
0x56830647, 0xF3C29439, 0x19EC544A, 0xBCADC634, 0xC85DA25D, 0x6D1C3023, 0x8732F050, 0x2273622E,
0x6ED23882, 0xCB93AAFC, 0x21BD6A8F, 0x84FCF8F1, 0xF00C9C98, 0x554D0EE6, 0xBF63CE95, 0x1A225CEB,
0x8B277743, 0x2E66E53D, 0xC448254E, 0x6109B730, 0x15F9D359, 0xB0B84127, 0x5A968154, 0xFFD7132A,
0xB3764986, 0x1637DBF8, 0xFC191B8B, 0x595889F5, 0x2DA8ED9C, 0x88E97FE2, 0x62C7BF91, 0xC7862DEF,
0xFB850AC9, 0x5EC498B7, 0xB4EA58C4, 0x11ABCABA, 0x655BAED3, 0xC01A3CAD, 0x2A34FCDE, 0x8F756EA0,
0xC3D4340C, 0x6695A672, 0x8CBB6601, 0x29FAF47F, 0x5D0A9016, 0xF84B0268, 0x1265C21B, 0xB7245065,
0x6A638C57, 0xCF221E29, 0x250CDE5A, 0x804D4C24, 0xF4BD284D, 0x51FCBA33, 0xBBD27A40, 0x1E93E83E,
0x5232B292, 0xF77320EC, 0x1D5DE09F, 0xB81C72E1, 0xCCEC1688, 0x69AD84F6, 0x83834485, 0x26C2D6FB,
0x1AC1F1DD, 0xBF8063A3, 0x55AEA3D0, 0xF0EF31AE, 0x841F55C7, 0x215EC7B9, 0xCB7007CA, 0x6E3195B4,
0x2290CF18, 0x87D15D66, 0x6DFF9D15, 0xC8BE0F6B, 0xBC4E6B02, 0x190FF97C, 0xF321390F, 0x5660AB71,
0x4C42F79A, 0xE90365E4, 0x032DA597, 0xA66C37E9, 0xD29C5380, 0x77DDC1FE, 0x9DF3018D, 0x38B293F3,
0x7413C95F, 0xD1525B21, 0x3B7C9B52, 0x9E3D092C, 0xEACD6D45, 0x4F8CFF3B, 0xA5A23F48, 0x00E3AD36,
0x3CE08A10, 0x99A1186E, 0x738FD81D, 0xD6CE4A63, 0xA23E2E0A, 0x077FBC74, 0xED517C07, 0x4810EE79,
0x04B1B4D5, 0xA1F026AB, 0x4BDEE6D8, 0xEE9F74A6, 0x9A6F10CF, 0x3F2E82B1, 0xD50042C2, 0x7041D0BC,
0xAD060C8E, 0x08479EF0, 0xE2695E83, 0x4728CCFD, 0x33D8A894, 0x96993AEA, 0x7CB7FA99, 0xD9F668E7,
0x9557324B, 0x3016A035, 0xDA386046, 0x7F79F238, 0x0B899651, 0xAEC8042F, 0x44E6C45C, 0xE1A75622,
0xDDA47104, 0x78E5E37A, 0x92CB2309, 0x378AB177, 0x437AD51E, 0xE63B4760, 0x0C158713, 0xA954156D,
0xE5F54FC1, 0x40B4DDBF, 0xAA9A1DCC, 0x0FDB8FB2, 0x7B2BEBDB, 0xDE6A79A5, 0x3444B9D6, 0x91052BA8},
{0x00000000, 0xDD45AAB8, 0xBF672381, 0x62228939, 0x7B2231F3, 0xA6679B4B, 0xC4451272, 0x1900B8CA,
0xF64463E6, 0x2B01C95E, 0x49234067, 0x9466EADF, 0x8D665215, 0x5023F8AD, 0x32017194, 0xEF44DB2C,
0xE964B13D, 0x34211B85, 0x560392BC, 0x8B463804, 0x924680CE, 0x4F032A76, 0x2D21A34F, 0xF06409F7,
0x1F20D2DB, 0xC2657863, 0xA047F15A, 0x7D025BE2, 0x6402E328, 0xB9474990, 0xDB65C0A9, 0x06206A11,
0xD725148B, 0x0A60BE33, 0x6842370A, 0xB5079DB2, 0xAC072578, 0x71428FC0, 0x136006F9, 0xCE25AC41,
0x2161776D, 0xFC24DDD5, 0x9E0654EC, 0x4343FE54, 0x5A43469E, 0x8706EC26, 0xE524651F, 0x3861CFA7,
0x3E41A5B6, 0xE3040F0E, 0x81268637, 0x5C632C8F, 0x45639445, 0x98263EFD, 0xFA04B7C4, 0x27411D7C,
0xC805C650, 0x15406CE8, 0x7762E5D1, 0xAA274F69, 0xB327F7A3, 0x6E625D1B, 0x0C40D422, 0xD1057E9A,
0xABA65FE7, 0x76E3F55F, 0x14C17C66, 0xC984D6DE, 0xD0846E14, 0x0DC1C4AC, 0x6FE34D95, 0xB2A6E72D,
0x5DE23C01, 0x80A796B9, 0xE2851F80, 0x3FC0B538, 0x26C00DF2, 0xFB85A74A, 0x99A72E73, 0x44E284CB,
0x42C2EEDA, 0x9F874462, 0xFDA5CD5B, 0x20E067E3, 0x39E0DF29, 0xE4A57591, 0x8687FCA8, 0x5BC25610,
0xB4868D3C, 0x69C32784, 0x0BE1AEBD, 0xD6A40405, 0xCFA4BCCF, 0x12E11677, 0x70C39F4E, 0xAD8635F6,
0x7C834B6C, 0xA1C6E1D4, 0xC3E468ED, 0x1EA1C255, 0x07A17A9F, 0xDAE4D027, 0xB8C6591E, 0x6583F3A6,
0x8AC7288A, 0x57828232, 0x35A00B0B, 0xE8E5A1B3, 0xF1E51979, 0x2CA0B3C1, 0x4E823AF8, 0x93C79040,
0x95E7FA51, 0x48A250E9, 0x2A80D9D0, 0xF7C57368, 0xEEC5CBA2, 0x3380611A, 0x51A2E823, 0x8CE7429B,
0x63A399B7, 0xBEE6330F, 0xDCC4BA36, 0x0181108E, 0x1881A844, 0xC5C402FC, 0xA7E68BC5, 0x7AA3217D,
0x52A0C93F, 0x8FE56387, 0xEDC7EABE, 0x30824006, 0x2982F8CC, 0xF4C75274, 0x96E5DB4D, 0x4BA071F5,
0xA4E4AAD9, 0x79A10061, 0x1B838958, 0xC6C623E0, 0xDFC69B2A, 0x02833192, 0x60A1B8AB, 0xBDE41213,
0xBBC47802, 0x6681D2BA, 0x04A35B83, 0xD9E6F13B, 0xC0E649F1, 0x1DA3E349, 0x7F816A70, 0xA2C4C0C8,
0x4D801BE4, 0x90C5B15C, 0xF2E73865, 0x2FA292DD, 0x36A22A17, 0xEBE780AF, 0x89C50996, 0x5480A32E,
0x8585DDB4, 0x58C0770C, 0x3AE2FE35, 0xE7A7548D, 0xFEA7EC47, 0x23E246FF, 0x41C0CFC6, 0x9C85657E,
0x73C1BE52, 0xAE8414EA, 0xCCA69DD3, 0x11E3376B, 0x08E38FA1, 0xD5A62519, 0xB784AC20, 0x6AC10698,
0x6CE16C89, 0xB1A4C631, 0xD3864F08, 0x0EC3E5B0, 0x17C35D7A, 0xCA86F7C2, 0xA8A47EFB, 0x75E1D443,
0x9AA50F6F, 0x47E0A5D7, 0x25C22CEE, 0xF8878656, 0xE1873E9C, 0x3CC29424, 0x5EE01D1D, 0x83A5B7A5,
0xF90696D8, 0x24433C60, 0x4661B559, 0x9B241FE1, 0x8224A72B, 0x5F610D93, 0x3D4384AA, 0xE0062E12,
0x0F42F53E, 0xD2075F86, 0xB025D6BF, 0x6D607C07, 0x7460C4CD, 0xA9256E75, 0xCB07E74C, 0x16424DF4,
0x106227E5, 0xCD278D5D, 0xAF050464, 0x7240AEDC, 0x6B401616, 0xB605BCAE, 0xD4273597, 0x09629F2F,
0xE6264403, 0x3B63EEBB, 0x59416782, 0x8404CD3A, 0x9D0475F0, 0x4041DF48, 0x22635671, 0xFF26FCC9,
0x2E238253, 0xF36628EB, 0x9144A1D2, 0x4C010B6A, 0x5501B3A0, 0x88441918, 0xEA669021, 0x37233A99,
0xD867E1B5, 0x05224B0D, 0x6700C234, 0xBA45688C, 0xA345D046, 0x7E007AFE, 0x1C22F3C7, 0xC167597F,
0xC747336E, 0x1A0299D6, 0x782010EF, 0xA565BA57, 0xBC65029D, 0x6120A825, 0x0302211C, 0xDE478BA4,
0x31035088, 0xEC46FA30, 0x8E647309, 0x5321D9B1, 0x4A21617B, 0x9764CBC3, 0xF54642FA, 0x2803E842},
{0x00000000, 0x38116FAC, 0x7022DF58, 0x4833B0F4, 0xE045BEB0, 0xD854D11C, 0x906761E8, 0xA8760E44,
0xC5670B91, 0xFD76643D, 0xB545D4C9, 0x8D54BB65, 0x2522B521, 0x1D33DA8D, 0x55006A79, 0x6D1105D5,
0x8F2261D3, 0xB7330E7F, 0xFF00BE8B, 0xC711D127, 0x6F67DF63, 0x5776B0CF, 0x1F45003B, 0x27546F97,
0x4A456A42, 0x725405EE, 0x3A67B51A, 0x0276DAB6, 0xAA00D4F2, 0x9211BB5E, 0xDA220BAA, 0xE2336406,
0x1BA8B557, 0x23B9DAFB, 0x6B8A6A0F, 0x539B05A3, 0xFBED0BE7, 0xC3FC644B, 0x8BCFD4BF, 0xB3DEBB13,
0xDECFBEC6, 0xE6DED16A, 0xAEED619E, 0x96FC0E32, 0x3E8A0076, 0x069B6FDA, 0x4EA8DF2E, 0x76B9B082,
0x948AD484, 0xAC9BBB28, 0xE4A80BDC, 0xDCB96470, 0x74CF6A34, 0x4CDE0598, 0x04EDB56C, 0x3CFCDAC0,
0x51EDDF15, 0x69FCB0B9, 0x21CF004D, 0x19DE6FE1, 0xB1A861A5, 0x89B90E09, 0xC18ABEFD, 0xF99BD151,
0x37516AAE, 0x0F400502, 0x4773B5F6, 0x7F62DA5A, 0xD714D41E, 0xEF05BBB2, 0xA7360B46, 0x9F2764EA,
0xF236613F, 0xCA270E93, 0x8214BE67, 0xBA05D1CB, 0x1273DF8F, 0x2A62B023, 0x625100D7, 0x5A406F7B,
0xB8730B7D, 0x806264D1, 0xC851D425, 0xF040BB89, 0x5836B5CD, 0x6027DA61, 0x28146A95, 0x10050539,
0x7D1400EC, 0x45056F40, 0x0D36DFB4, 0x3527B018, 0x9D51BE5C, 0xA540D1F0, 0xED736104, 0xD5620EA8,
0x2CF9DFF9, 0x14E8B055, 0x5CDB00A1, 0x64CA6F0D, 0xCCBC6149, 0xF4AD0EE5, 0xBC9EBE11, 0x848FD1BD,
0xE99ED468, 0xD18FBBC4, 0x99BC0B30, 0xA1AD649C, 0x09DB6AD8, 0x31CA0574, 0x79F9B580, 0x41E8DA2C,
0xA3DBBE2A, 0x9BCAD186, 0xD3F96172, 0xEBE80EDE, 0x439E009A, 0x7B8F6F36, 0x33BCDFC2, 0x0BADB06E,
0x66BCB5BB, 0x5EADDA17, 0x169E6AE3, 0x2E8F054F, 0x86F90B0B, 0xBEE864A7, 0xF6DBD453, 0xCECABBFF,
0x6EA2D55C, 0x56B3BAF0, 0x1E800A04, 0x269165A8, 0x8EE76BEC, 0xB6F60440, 0xFEC5B4B4, 0xC6D4DB18,
0xABC5DECD, 0x93D4B161, 0xDBE70195, 0xE3F66E39, 0x4B80607D, 0x73910FD1, 0x3BA2BF25, 0x03B3D089,
0xE180B48F, 0xD991DB23, 0x91A26BD7, 0xA9B3047B, 0x01C50A3F, 0x39D46593, 0x71E7D567, 0x49F6BACB,
0x24E7BF1E, 0x1CF6D0B2, 0x54C56046, 0x6CD40FEA, 0xC4A201AE, 0xFCB36E02, 0xB480DEF6, 0x8C91B15A,
0x750A600B, 0x4D1B0FA7, 0x0528BF53, 0x3D39D0FF, 0x954FDEBB, 0xAD5EB117, 0xE56D01E3, 0xDD7C6E4F,
0xB06D6B9A, 0x887C0436, 0xC04FB4C2, 0xF85EDB6E, 0x5028D52A, 0x6839BA86, 0x200A0A72, 0x181B65DE,
0xFA2801D8, 0xC2396E74, 0x8A0ADE80, 0xB21BB12C, 0x1A6DBF68, 0x227CD0C4, 0x6A4F6030, 0x525E0F9C,
0x3F4F0A49, 0x075E65E5, 0x4F6DD511, 0x777CBABD, 0xDF0AB4F9, 0xE71BDB55, 0xAF286BA1, 0x9739040D,
0x59F3BFF2, 0x61E2D05E, 0x29D160AA, 0x11C00F06, 0xB9B60142, 0x81A76EEE, 0xC994DE1A, 0xF185B1B6,
0x9C94B463, 0xA485DBCF, 0xECB66B3B, 0xD4A70497, 0x7CD10AD3, 0x44C0657F, 0x0CF3D58B, 0x34E2BA27,
0xD6D1DE21, 0xEEC0B18D, 0xA6F30179, 0x9EE26ED5, 0x36946091, 0x0E850F3D, 0x46B6BFC9, 0x7EA7D065,
0x13B6D5B0, 0x2BA7BA1C, 0x63940AE8, 0x5B856544, 0xF3F36B00, 0xCBE204AC, 0x83D1B458, 0xBBC0DBF4,
0x425B0AA5, 0x7A4A6509, 0x3279D5FD, 0x0A68BA51, 0xA21EB415, 0x9A0FDBB9, 0xD23C6B4D, 0xEA2D04E1,
0x873C0134, 0xBF2D6E98, 0xF71EDE6C, 0xCF0FB1C0, 0x6779BF84, 0x5F68D028, 0x175B60DC, 0x2F4A0F70,
0xCD796B76, 0xF56804DA, 0xBD5BB42E, 0x854ADB82, 0x2D3CD5C6, 0x152DBA6A, 0x5D1E0A9E, 0x650F6532,
0x081E60E7, 0x300F0F4B, 0x783CBFBF, 0x402DD013, 0xE85BDE57, 0xD04AB1FB, 0x9879010F, 0xA0686EA3},
{0x00000000, 0xEF306B19, 0xDB8CA0C3, 0x34BCCBDA, 0xB2F53777, 0x5DC55C6E, 0x697997B4, 0x8649FCAD,
0x6006181F, 0x8F367306, 0xBB8AB8DC, 0x54BAD3C5, 0xD2F32F68, 0x3DC34471, 0x097F8FAB, 0xE64FE4B2,
0xC00C303E, 0x2F3C5B27, 0x1B8090FD, 0xF4B0FBE4, 0x72F90749, 0x9DC96C50, 0xA975A78A, 0x4645CC93,
0xA00A2821, 0x4F3A4338, 0x7B8688E2, 0x94B6E3FB, 0x12FF1F56, 0xFDCF744F, 0xC973BF95, 0x2643D48C,
0x85F4168D, 0x6AC47D94, 0x5E78B64E, 0xB148DD57, 0x370121FA, 0xD8314AE3, 0xEC8D8139, 0x03BDEA20,
0xE5F20E92, 0x0AC2658B, 0x3E7EAE51, 0xD14EC548, 0x570739E5, 0xB83752FC, 0x8C8B9926, 0x63BBF23F,
0x45F826B3, 0xAAC84DAA, 0x9E748670, 0x7144ED69, 0xF70D11C4, 0x183D7ADD, 0x2C81B107, 0xC3B1DA1E,
0x25FE3EAC, 0xCACE55B5, 0xFE729E6F, 0x1142F576, 0x970B09DB, 0x783B62C2, 0x4C87A918, 0xA3B7C201,
0x0E045BEB, 0xE13430F2, 0xD588FB28, 0x3AB89031, 0xBCF16C9C, 0x53C10785, 0x677DCC5F, 0x884DA746,
0x6E0243F4, 0x813228ED, 0xB58EE337, 0x5ABE882E, 0xDCF77483, 0x33C71F9A, 0x077BD440, 0xE84BBF59,
0xCE086BD5, 0x213800CC, 0x1584CB16, 0xFAB4A00F, 0x7CFD5CA2, 0x93CD37BB, 0xA771FC61, 0x48419778,
0xAE0E73CA, 0x413E18D3, 0x7582D309, 0x9AB2B810, 0x1CFB44BD, 0xF3CB2FA4, 0xC777E47E, 0x28478F67,
0x8BF04D66, 0x64C0267F, 0x507CEDA5, 0xBF4C86BC, 0x39057A11, 0xD6351108, 0xE289DAD2, 0x0DB9B1CB,
0xEBF65579, 0x04C63E60, 0x307AF5BA, 0xDF4A9EA3, 0x5903620E, 0xB6330917, 0x828FC2CD, 0x6DBFA9D4,
0x4BFC7D58, 0xA4CC1641, 0x9070DD9B, 0x7F40B682, 0xF9094A2F, 0x16392136, 0x2285EAEC, 0xCDB581F5,
0x2BFA6547, 0xC4CA0E5E, 0xF076C584, 0x1F46AE9D, 0x990F5230, 0x763F3929, 0x4283F2F3, 0xADB399EA,
0x1C08B7D6, 0xF338DCCF, 0xC7841715, 0x28B47C0C, 0xAEFD80A1, 0x41CDEBB8, 0x75712062, 0x9A414B7B,
0x7C0EAFC9, 0x933EC4D0, 0xA7820F0A, 0x48B26413, 0xCEFB98BE, 0x21CBF3A7, 0x1577387D, 0xFA475364,
0xDC0487E8, 0x3334ECF1, 0x0788272B, 0xE8B84C32, 0x6EF1B09F, 0x81C1DB86, 0xB57D105C, 0x5A4D7B45,
0xBC029FF7, 0x5332F4EE, 0x678E3F34, 0x88BE542D, 0x0EF7A880, 0xE1C7C399, 0xD57B0843, 0x3A4B635A,
0x99FCA15B, 0x76CCCA42, 0x42700198, 0xAD406A81, 0x2B09962C, 0xC439FD35, 0xF08536EF, 0x1FB55DF6,
0xF9FAB944, 0x16CAD25D, 0x22761987, 0xCD46729E, 0x4B0F8E33, 0xA43FE52A, 0x90832EF0, 0x7FB345E9,
0x59F09165, 0xB6C0FA7C, 0x827C31A6, 0x6D4C5ABF, 0xEB05A612, 0x0435CD0B, 0x308906D1, 0xDFB96DC8,
0x39F6897A, 0xD6C6E263, 0xE27A29B9, 0x0D4A42A0, 0x8B03BE0D, 0x6433D514, 0x508F1ECE, 0xBFBF75D7,
0x120CEC3D, 0xFD3C8724, 0xC9804CFE, 0x26B027E7, 0xA0F9DB4A, 0x4FC9B053, 0x7B757B89, 0x94451090,
0x720AF422, 0x9D3A9F3B, 0xA98654E1, 0x46B63FF8, 0xC0FFC355, 0x2FCFA84C, 0x1B736396, 0xF443088F,
0xD200DC03, 0x3D30B71A, 0x098C7CC0, 0xE6BC17D9, 0x60F5EB74, 0x8FC5806D, 0xBB794BB7, 0x544920AE,
0xB206C41C, 0x5D36AF05, 0x698A64DF, 0x86BA0FC6, 0x00F3F36B, 0xEFC39872, 0xDB7F53A8, 0x344F38B1,
0x97F8FAB0, 0x78C891A9, 0x4C745A73, 0xA344316A, 0x250DCDC7, 0xCA3DA6DE, 0xFE816D04, 0x11B1061D,
0xF7FEE2AF, 0x18CE89B6, 0x2C72426C, 0xC3422975, 0x450BD5D8, 0xAA3BBEC1, 0x9E87751B, 0x71B71E02,
0x57F4CA8E, 0xB8C4A197, 0x8C786A4D, 0x63480154, 0xE501FDF9, 0x0A3196E0, 0x3E8D5D3A, 0xD1BD3623,
0x37F2D291, 0xD8C2B988, 0xEC7E7252, 0x034E194B, 0x8507E5E6, 0x6A378EFF, 0x5E8B4525, 0xB1BB2E3C},
{0x00000000, 0x68032CC8, 0xD0065990, 0xB8057558, 0xA5E0C5D1, 0xCDE3E919, 0x75E69C41, 0x1DE5B089,
0x4E2DFD53, 0x262ED19B, 0x9E2BA4C3, 0xF628880B, 0xEBCD3882, 0x83CE144A, 0x3BCB6112, 0x53C84DDA,
0x9C5BFAA6, 0xF458D66E, 0x4C5DA336, 0x245E8FFE, 0x39BB3F77, 0x51B813BF, 0xE9BD66E7, 0x81BE4A2F,
0xD27607F5, 0xBA752B3D, 0x02705E65, 0x6A7372AD, 0x7796C224, 0x1F95EEEC, 0xA7909BB4, 0xCF93B77C,
0x3D5B83BD, 0x5558AF75, 0xED5DDA2D, 0x855EF6E5, 0x98BB466C, 0xF0B86AA4, 0x48BD1FFC, 0x20BE3334,
0x73767EEE, 0x1B755226, 0xA370277E, 0xCB730BB6, 0xD696BB3F, 0xBE9597F7, 0x0690E2AF, 0x6E93CE67,
0xA100791B, 0xC90355D3, 0x7106208B, 0x19050C43, 0x04E0BCCA, 0x6CE39002, 0xD4E6E55A, 0xBCE5C992,
0xEF2D8448, 0x872EA880, 0x3F2BDDD8, 0x5728F110, 0x4ACD4199, 0x22CE6D51, 0x9ACB1809, 0xF2C834C1,
0x7AB7077A, 0x12B42BB2, 0xAAB15EEA, 0xC2B27222, 0xDF57C2AB, 0xB754EE63, 0x0F519B3B, 0x6752B7F3,
0x349AFA29, 0x5C99D6E1, 0xE49CA3B9, 0x8C9F8F71, 0x917A3FF8, 0xF9791330, 0x417C6668, 0x297F4AA0,
0xE6ECFDDC, 0x8EEFD114, 0x36EAA44C, 0x5EE98884, 0x430C380D, 0x2B0F14C5, 0x930A619D, 0xFB094D55,
0xA8C1008F, 0xC0C22C47, 0x78C7591F, 0x10C475D7, 0x0D21C55E, 0x6522E996, 0xDD279CCE, 0xB524B006,
0x47EC84C7, 0x2FEFA80F, 0x97EADD57, 0xFFE9F19F, 0xE20C4116, 0x8A0F6DDE, 0x320A1886, 0x5A09344E,
0x09C17994, 0x61C2555C, 0xD9C72004, 0xB1C40CCC, 0xAC21BC45, 0xC422908D, 0x7C27E5D5, 0x1424C91D,
0xDBB77E61, 0xB3B452A9, 0x0BB127F1, 0x63B20B39, 0x7E57BBB0, 0x16549778, 0xAE51E220, 0xC652CEE8,
0x959A8332, 0xFD99AFFA, 0x459CDAA2, 0x2D9FF66A, 0x307A46E3, 0x58796A2B, 0xE07C1F73, 0x887F33BB,
0xF56E0EF4, 0x9D6D223C, 0x25685764, 0x4D6B7BAC, 0x508ECB25, 0x388DE7ED, 0x808892B5, 0xE88BBE7D,
0xBB43F3A7, 0xD340DF6F, 0x6B45AA37, 0x034686FF, 0x1EA33676, 0x76A01ABE, 0xCEA56FE6, 0xA6A6432E,
0x6935F452, 0x0136D89A, 0xB933ADC2, 0xD130810A, 0xCCD53183, 0xA4D61D4B, 0x1CD36813, 0x74D044DB,
0x27180901, 0x4F1B25C9, 0xF71E5091, 0x9F1D7C59, 0x82F8CCD0, 0xEAFBE018, 0x52FE9540, 0x3AFDB988,
0xC8358D49, 0xA036A181, 0x1833D4D9, 0x7030F811, 0x6DD54898, 0x05D66450, 0xBDD31108, 0xD5D03DC0,
0x8618701A, 0xEE1B5CD2, 0x561E298A, 0x3E1D0542, 0x23F8B5CB, 0x4BFB9903, 0xF3FEEC5B, 0x9BFDC093,
0x546E77EF, 0x3C6D5B27, 0x84682E7F, 0xEC6B02B7, 0xF18EB23E, 0x998D9EF6, 0x2188EBAE, 0x498BC766,
0x1A438ABC, 0x7240A674, 0xCA45D32C, 0xA246FFE4, 0xBFA34F6D, 0xD7A063A5, 0x6FA516FD, 0x07A63A35,
0x8FD9098E, 0xE7DA2546, 0x5FDF501E, 0x37DC7CD6, 0x2A39CC5F, 0x423AE097, 0xFA3F95CF, 0x923CB907,
0xC1F4F4DD, 0xA9F7D815, 0x11F2AD4D, 0x79F18185, 0x6414310C, 0x0C171DC4, 0xB412689C, 0xDC114454,
0x1382F328, 0x7B81DFE0, 0xC384AAB8, 0xAB878670, 0xB66236F9, 0xDE611A31, 0x66646F69, 0x0E6743A1,
0x5DAF0E7B, 0x35AC22B3, 0x8DA957EB, 0xE5AA7B23, 0xF84FCBAA, 0x904CE762, 0x2849923A, 0x404ABEF2,
0xB2828A33, 0xDA81A6FB, 0x6284D3A3, 0x0A87FF6B, 0x17624FE2, 0x7F61632A, 0xC7641672, 0xAF673ABA,
0xFCAF7760, 0x94AC5BA8, 0x2CA92EF0, 0x44AA0238, 0x594FB2B1, 0x314C9E79, 0x8949EB21, 0xE14AC7E9,
0x2ED97095, 0x46DA5C5D, 0xFEDF2905, 0x96DC05CD, 0x8B39B544, 0xE33A998C, 0x5B3FECD4, 0x333CC01C,
0x60F48DC6, 0x08F7A10E, 0xB0F2D456, 0xD8F1F89E, 0xC5144817, 0xAD1764DF, 0x15121187, 0x7D113D4F},
{0x00000000, 0x493C7D27, 0x9278FA4E, 0xDB448769, 0x211D826D, 0x6821FF4A, 0xB3657823, 0xFA590504,
0x423B04DA, 0x0B0779FD, 0xD043FE94, 0x997F83B3, 0x632686B7, 0x2A1AFB90, 0xF15E7CF9, 0xB86201DE,
0x847609B4, 0xCD4A7493, 0x160EF3FA, 0x5F328EDD, 0xA56B8BD9, 0xEC57F6FE, 0x37137197, 0x7E2F0CB0,
0xC64D0D6E, 0x8F717049, 0x5435F720, 0x1D098A07, 0xE7508F03, 0xAE6CF224, 0x7528754D, 0x3C14086A,
0x0D006599, 0x443C18BE, 0x9F789FD7, 0xD644E2F0, 0x2C1DE7F4, 0x65219AD3, 0xBE651DBA, 0xF759609D,
0x4F3B6143, 0x06071C64, 0xDD439B0D, 0x947FE62A, 0x6E26E32E, 0x271A9E09, 0xFC5E1960, 0xB5626447,
0x89766C2D, 0xC04A110A, 0x1B0E9663, 0x5232EB44, 0xA86BEE40, 0xE1579367, 0x3A13140E, 0x732F6929,
0xCB4D68F7, 0x827115D0, 0x593592B9, 0x1009EF9E, 0xEA50EA9A, 0xA36C97BD, 0x782810D4, 0x31146DF3,
0x1A00CB32, 0x533CB615, 0x8878317C, 0xC1444C5B, 0x3B1D495F, 0x72213478, 0xA965B311, 0xE059CE36,
0x583BCFE8, 0x1107B2CF, 0xCA4335A6, 0x837F4881, 0x79264D85, 0x301A30A2, 0xEB5EB7CB, 0xA262CAEC,
0x9E76C286, 0xD74ABFA1, 0x0C0E38C8, 0x453245EF, 0xBF6B40EB, 0xF6573DCC, 0x2D13BAA5, 0x642FC782,
0xDC4DC65C, 0x9571BB7B, 0x4E353C12, 0x07094135, 0xFD504431, 0xB46C3916, 0x6F28BE7F, 0x2614C358,
0x1700AEAB, 0x5E3CD38C, 0x857854E5, 0xCC4429C2, 0x361D2CC6, 0x7F2151E1, 0xA465D688, 0xED59ABAF,
0x553BAA71, 0x1C07D756, 0xC743503F, 0x8E7F2D18, 0x7426281C, 0x3D1A553B, 0xE65ED252, 0xAF62AF75,
0x9376A71F, 0xDA4ADA38, 0x010E5D51, 0x48322076, 0xB26B2572, 0xFB575855, 0x2013DF3C, 0x692FA21B,
0xD14DA3C5, 0x9871DEE2, 0x4335598B, 0x0A0924AC, 0xF05021A8, 0xB96C5C8F, 0x6228DBE6, 0x2B14A6C1,
0x34019664, 0x7D3DEB43, 0xA6796C2A, 0xEF45110D, 0x151C1409, 0x5C20692E, 0x8764EE47, 0xCE589360,
0x763A92BE, 0x3F06EF99, 0xE44268F0, 0xAD7E15D7, 0x572710D3, 0x1E1B6DF4, 0xC55FEA9D, 0x8C6397BA,
0xB0779FD0, 0xF94BE2F7, 0x220F659E, 0x6B3318B9, 0x916A1DBD, 0xD856609A, 0x0312E7F3, 0x4A2E9AD4,
0xF24C9B0A, 0xBB70E62D, 0x60346144, 0x29081C63, 0xD3511967, 0x9A6D6440, 0x4129E329, 0x08159E0E,
0x3901F3FD, 0x703D8EDA, 0xAB7909B3, 0xE2457494, 0x181C7190, 0x51200CB7, 0x8A648BDE, 0xC358F6F9,
0x7B3AF727, 0x32068A00, 0xE9420D69, 0xA07E704E, 0x5A27754A, 0x131B086D, 0xC85F8F04, 0x8163F223,
0xBD77FA49, 0xF44B876E, 0x2F0F0007, 0x66337D20, 0x9C6A7824, 0xD5560503, 0x0E12826A, 0x472EFF4D,
0xFF4CFE93, 0xB67083B4, 0x6D3404DD, 0x240879FA, 0xDE517CFE, 0x976D01D9, 0x4C2986B0, 0x0515FB97,
0x2E015D56, 0x673D2071, 0xBC79A718, 0xF545DA3F, 0x0F1CDF3B, 0x4620A21C, 0x9D642575, 0xD4585852,
0x6C3A598C, 0x250624AB, 0xFE42A3C2, 0xB77EDEE5, 0x4D27DBE1, 0x041BA6C6, 0xDF5F21AF, 0x96635C88,
0xAA7754E2, 0xE34B29C5, 0x380FAEAC, 0x7133D38B, 0x8B6AD68F, 0xC256ABA8, 0x19122CC1, 0x502E51E6,
0xE84C5038, 0xA1702D1F, 0x7A34AA76, 0x3308D751, 0xC951D255, 0x806DAF72, 0x5B29281B, 0x1215553C,
0x230138CF, 0x6A3D45E8, 0xB179C281, 0xF845BFA6, 0x021CBAA2, 0x4B20C785, 0x906440EC, 0xD9583DCB,
0x613A3C15, 0x28064132, 0xF342C65B, 0xBA7EBB7C, 0x4027BE78, 0x091BC35F, 0xD25F4436, 0x9B633911,
0xA777317B, 0xEE4B4C5C, 0x350FCB35, 0x7C33B612, 0x866AB316, 0xCF56CE31, 0x14124958, 0x5D2E347F,
0xE54C35A1, 0xAC704886, 0x7734CFEF, 0x3E08B2C8, 0xC451B7CC, 0x8D6DCAEB, 0x56294D82, 0x1F1530A5}};
static inline __u32 crc32_hash_1byte(__u8 data, __u32 init_val)
{
__u32 crc;
crc = init_val;
crc ^= data;
return crc32c_tables[0][crc & 0xff] ^ (crc >> 8);
}
static inline __u32 crc32_hash_2byte(__u16 data, __u32 init_val)
{
__u32 crc;
crc = init_val;
crc ^= data;
crc = CRC32_UPD(crc, 1) ^ (crc >> 16);
return crc;
}
static inline __u32 crc32_hash_4byte(__u32 data, __u32 init_val)
{
__u32 crc, term1, term2;
crc = init_val;
crc ^= data;
term1 = CRC32_UPD(crc, 3);
term2 = crc >> 16;
crc = term1 ^ CRC32_UPD(term2, 1);
return crc;
}
static inline __u32 crc32_hash_8byte(void *data, __u32 init_val)
{
__u32 crc, term1, term2;
__u32 *__u32_ptr = (__u32 *)data;
crc = init_val;
crc ^= __u32_ptr[0];
term1 = CRC32_UPD(crc, 7);
term2 = crc >> 16;
crc = term1 ^ CRC32_UPD(term2, 5);
term1 = CRC32_UPD(__u32_ptr[1], 3);
term2 = __u32_ptr[1] >> 16;
crc ^= term1 ^ CRC32_UPD(term2, 1);
return crc;
}
static inline __u32 crc32_hash(const void *data, __u32 data_len, __u32 init_val)
{
unsigned i;
char *pd = (char *)data;
for (i = 0; i < data_len / 8; i++)
{
init_val = crc32_hash_8byte(pd, init_val);
pd += 8;
}
if (data_len & 0x4)
{
init_val = crc32_hash_4byte(*(const __u32 *)pd, init_val);
pd += 4;
}
if (data_len & 0x2)
{
init_val = crc32_hash_2byte(*(const __u16 *)pd, init_val);
pd += 2;
}
if (data_len & 0x1)
{
init_val = crc32_hash_1byte(*(const __u8 *)pd, init_val);
}
return init_val;
}
#ifdef __cplusplus
}
#endif
#endif

25
bpf/libendian.h Normal file
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@@ -0,0 +1,25 @@
/* Copyright Authors of Cilium */
#ifndef __LIB_ENDIAN_H_
#define __LIB_ENDIAN_H_
#if defined(__BYTE_ORDER__) && defined(__ORDER_LITTLE_ENDIAN__) && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
#define __bpf_ntohs(x) __builtin_bswap16(x)
#define __bpf_htons(x) __builtin_bswap16(x)
#define __bpf_ntohl(x) __builtin_bswap32(x)
#define __bpf_htonl(x) __builtin_bswap32(x)
#elif defined(__BYTE_ORDER__) && defined(__ORDER_BIG_ENDIAN__) && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
#define __bpf_ntohs(x) (x)
#define __bpf_htons(x) (x)
#define __bpf_ntohl(x) (x)
#define __bpf_htonl(x) (x)
#else
#error "Endianness detection needs to be set up for your compiler?!"
#endif
#define bpf_htons(x) (__builtin_constant_p(x) ? __constant_htons(x) : __bpf_htons(x))
#define bpf_ntohs(x) (__builtin_constant_p(x) ? __constant_ntohs(x) : __bpf_ntohs(x))
#define bpf_htonl(x) (__builtin_constant_p(x) ? __constant_htonl(x) : __bpf_htonl(x))
#define bpf_ntohl(x) (__builtin_constant_p(x) ? __constant_ntohl(x) : __bpf_ntohl(x))
#endif

5
bpf/makefile Normal file
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@@ -0,0 +1,5 @@
all:
clang -O2 -g -target bpf -c bpf_tun_rss_steering.c -o bpf_tun_rss_steering.o
clean:
rm -rf bpf_tun_rss_steering.o

8
cmake/FindLIBBPF.cmake Normal file
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@@ -0,0 +1,8 @@
include(FindPkgConfig)
pkg_check_modules(LIBBPF libbpf)
if(LIBBPF_FOUND)
set(SUPPORT_BPF true)
else()
set(SUPPORT_BPF false)
endif()

8
cmake/FindLIBURING.cmake Normal file
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@@ -0,0 +1,8 @@
include(FindPkgConfig)
pkg_check_modules(LIBURING liburing)
if(LIBURING_FOUND)
set(SUPPORT_LIBURING true)
else()
set(SUPPORT_LIBURING false)
endif()

11
common/CMakeLists.txt
View File

@@ -1,11 +1,20 @@
add_library(
common src/tfe_utils.cpp src/tfe_types.cpp src/tfe_future.cpp src/tfe_http.cpp src/tfe_plugin.cpp
src/tfe_rpc.cpp src/tfe_cmsg.cpp src/tfe_kafka_logger.cpp src/tfe_resource.cpp src/tfe_scan.cpp
src/tfe_pkt_util.cpp src/tfe_tcp_restore.cpp src/raw_socket.cpp src/packet_construct.cpp)
src/tfe_pkt_util.cpp src/tfe_tcp_restore.cpp src/raw_socket.cpp src/packet_construct.cpp
src/tap.cpp src/io_uring.cpp)
target_include_directories(common PUBLIC ${CMAKE_CURRENT_LIST_DIR}/include)
target_link_libraries(common PUBLIC libevent-static libevent-static-openssl libevent-static-pthreads rdkafka)
target_link_libraries(common PUBLIC MESA_handle_logger cjson)
if (SUPPORT_BPF)
target_link_libraries(common PUBLIC bpf)
endif()
if (SUPPORT_LIBURING)
target_link_libraries(common PUBLIC uring)
endif()
### UNITTEST CASE
add_executable(test-addr test/test_addr.cpp src/tfe_types.cpp src/tfe_utils.cpp)
target_include_directories(test-addr PRIVATE include)

44
common/include/io_uring.h Normal file
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@@ -0,0 +1,44 @@
#ifndef _IO_URING_H_
#define _IO_URING_H_
#ifdef __cplusplus
extern "C"
{
#endif
#define MAX_BATCH_CQE_NUM 128
struct io_uring_instance;
/*
* ring_size : 1024
* buff_size : 2048
* flags : 0
* IORING_SETUP_IOPOLL(1U << 0) io_context is polled
* IORING_SETUP_SQPOLL(1U << 1) SQ poll thread
* IORING_SETUP_SQ_AFF(1U << 2) sq_thread_cpu is valid
* ORING_SETUP_CQSIZE(1U << 3) app defines CQ size
* IORING_SETUP_CLAMP(1U << 4) clamp SQ/CQ ring sizes
* IORING_SETUP_ATTACH_WQ(1U << 5) attach to existing wq
* IORING_SETUP_R_DISABLED(1U << 6) start with ring disabled
* IORING_SETUP_SUBMIT_ALL(1U << 7) continue submit on error
* sq_thread_idle : 0
*/
struct io_uring_instance *io_uring_instance_create(int sockfd, int eventfd, int ring_size, int buff_size, int flags, int sq_thread_idle, int enable_debug);
void io_uring_instance_destory(struct io_uring_instance *instance);
typedef void read_callback(const char *data, int len, void *args);
// return 0 : success
// reutrn -1 : error
int io_uring_register_read_callback(struct io_uring_instance *instance, read_callback *read_cb, void *cb_arg);
// return 0 : success
// reutrn -1 : error
int io_uring_submit_write_entry(struct io_uring_instance *instance, const char *data, int len);
// returns the number of processed entrys
int io_uring_peek_ready_entrys(struct io_uring_instance *instance);
#ifdef __cplusplus
}
#endif
#endif

19
common/include/tap.h Normal file
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@@ -0,0 +1,19 @@
#ifndef _TAP_H_
#define _TAP_H_
#ifdef __cplusplus
extern "C"
{
#endif
int tap_open(const char *eth, int flags);
void tap_close(int sockfd);
int tap_up_link(const char *eth);
int tap_get_mtu(const char *eth);
#ifdef __cplusplus
}
#endif
#endif

388
common/src/io_uring.cpp Normal file
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@@ -0,0 +1,388 @@
#include <string.h>
#include <stdlib.h>
#include "tfe_utils.h"
#include "io_uring.h"
extern void *g_default_logger;
#if (SUPPORT_LIBURING)
#include <liburing.h>
enum entry_type
{
ENTRY_TYPE_UNKNOWN = 0,
ENTRY_TYPE_READ = 1,
ENTRY_TYPE_WRITE = 2,
};
struct user_data
{
enum entry_type type;
struct iovec vec;
};
struct config
{
int ring_size;
int buff_size;
int flags;
int sq_thread_idle; // milliseconds
int enable_debug;
};
struct io_uring_instance
{
int sockfd;
int eventfd;
struct config config;
struct io_uring ring;
struct io_uring_params params;
void *read_cb_args;
read_callback *read_cb;
int read_buff_num;
struct user_data **read_buffs;
};
static const char *entry_type_to_string(enum entry_type type)
{
switch (type)
{
case ENTRY_TYPE_READ:
return "read";
case ENTRY_TYPE_WRITE:
return "write";
case ENTRY_TYPE_UNKNOWN: /* fall passthrough */
default:
return "unknown";
}
}
static void user_data_destory(struct user_data *data)
{
if (data)
{
if (data->vec.iov_base)
{
free(data->vec.iov_base);
data->vec.iov_base = NULL;
}
free(data);
data = NULL;
}
}
static struct user_data *user_data_create(int buff_size)
{
struct user_data *data = (struct user_data *)calloc(1, sizeof(struct user_data));
data->vec.iov_base = (void *)calloc(buff_size, sizeof(char));
data->vec.iov_len = buff_size;
return data;
}
void io_uring_instance_destory(struct io_uring_instance *instance)
{
if (instance)
{
io_uring_queue_exit(&instance->ring);
if (instance->read_buffs)
{
for (int i = 0; i < instance->read_buff_num; i++)
{
if (instance->read_buffs[i])
{
user_data_destory(instance->read_buffs[i]);
instance->read_buffs[i] = NULL;
}
}
free(instance->read_buffs);
instance->read_buffs = NULL;
}
free(instance);
instance = NULL;
}
}
/*
* ring_size : 1024
* buff_size : 2048
* flags : 0
* IORING_SETUP_IOPOLL(1U << 0) io_context is polled
* IORING_SETUP_SQPOLL(1U << 1) SQ poll thread
* IORING_SETUP_SQ_AFF(1U << 2) sq_thread_cpu is valid
* ORING_SETUP_CQSIZE(1U << 3) app defines CQ size
* IORING_SETUP_CLAMP(1U << 4) clamp SQ/CQ ring sizes
* IORING_SETUP_ATTACH_WQ(1U << 5) attach to existing wq
* IORING_SETUP_R_DISABLED(1U << 6) start with ring disabled
* IORING_SETUP_SUBMIT_ALL(1U << 7) continue submit on error
* sq_thread_idle : 0
*/
struct io_uring_instance *io_uring_instance_create(int sockfd, int eventfd, int ring_size, int buff_size, int flags, int sq_thread_idle, int enable_debug)
{
int ret;
struct io_uring_instance *instance = (struct io_uring_instance *)calloc(1, sizeof(struct io_uring_instance));
if (instance == NULL)
{
TFE_LOG_ERROR(g_default_logger, "IO_URING: unable to create io_uring instance, %s", strerror(errno));
return NULL;
}
instance->sockfd = sockfd;
instance->eventfd = eventfd;
instance->config.ring_size = ring_size;
instance->config.buff_size = buff_size;
instance->config.flags = flags;
instance->config.sq_thread_idle = sq_thread_idle;
instance->config.enable_debug = enable_debug;
instance->read_buff_num = 1;
instance->read_buffs = (struct user_data **)calloc(instance->read_buff_num, sizeof(struct user_data *));
for (int i = 0; i < instance->read_buff_num; i++)
{
instance->read_buffs[i] = user_data_create(instance->config.buff_size);
if (instance->read_buffs[i] == NULL)
{
TFE_LOG_ERROR(g_default_logger, "IO_URING: unable to create user_data, %s", strerror(errno));
goto error_out;
}
}
/*
* 参考资料：https://unixism.net/loti/tutorial/sq_poll.html#sq-poll
*
* 执行下面命令进行验证 IORING_SETUP_SQPOLL:
* sudo bpftrace -e 'tracepoint:io_uring:io_uring_submit_sqe {printf("%s(%d)\n", comm, pid);}'
*/
if (instance->config.flags)
{
instance->params.flags |= instance->config.flags;
}
if (instance->config.sq_thread_idle)
{
instance->params.sq_thread_idle = instance->config.sq_thread_idle; // milliseconds
}
ret = io_uring_queue_init_params(ring_size, &instance->ring, &instance->params);
if (ret)
{
TFE_LOG_ERROR(g_default_logger, "IO_URING: unable to init io_uring queue params, %s", strerror(-ret));
goto error_out;
}
if (instance->eventfd > 0)
{
ret = io_uring_register_eventfd(&instance->ring, instance->eventfd);
if (ret)
{
TFE_LOG_ERROR(g_default_logger, "IO_URING: unable to register eventfd for io_uring, %s", strerror(-ret));
goto error_out;
}
}
return instance;
error_out:
io_uring_instance_destory(instance);
return NULL;
}
// return 0 : success
// reutrn -1 : error
int io_uring_submit_read_entry(struct io_uring_instance *instance, struct user_data *data)
{
struct io_uring_sqe *sqe = io_uring_get_sqe(&instance->ring);
if (sqe == NULL)
{
TFE_LOG_ERROR(g_default_logger, "IO_URING: unable to get io_uring sqe, io_uring submission queue is full, drop read type");
return -1;
}
data->type = ENTRY_TYPE_READ;
io_uring_prep_readv(sqe, instance->sockfd, &data->vec, 1, 0);
io_uring_sqe_set_data(sqe, data);
if (instance->config.enable_debug)
{
TFE_LOG_DEBUG(g_default_logger, "IO_URING: submit read entry: sockfd: %02d sqe: %p user_data: %p iov_base: %p iovec_len: %04ld",
instance->sockfd, sqe, (void *)sqe->user_data, data->vec.iov_base, data->vec.iov_len);
}
io_uring_submit(&instance->ring);
return 0;
}
// return 0 : success
// reutrn -1 : error
int io_uring_submit_write_entry(struct io_uring_instance *instance, const char *data, int len)
{
struct io_uring_sqe *sqe = io_uring_get_sqe(&instance->ring);
if (sqe == NULL)
{
TFE_LOG_ERROR(g_default_logger, "IO_URING: unable to get io_uring sqe, io_uring submission queue is full, drop write type");
return -1;
}
if (len > instance->config.buff_size)
{
TFE_LOG_ERROR(g_default_logger, "IO_URING: the length of the sent data is greater than the capacity of the io_uring buffer");
return -1;
}
struct user_data *user_data = user_data_create(instance->config.buff_size);
user_data->type = ENTRY_TYPE_WRITE;
user_data->vec.iov_len = len;
memcpy(user_data->vec.iov_base, data, len);
io_uring_prep_writev(sqe, instance->sockfd, &user_data->vec, 1, 0);
io_uring_sqe_set_data(sqe, user_data);
if (instance->config.enable_debug)
{
TFE_LOG_DEBUG(g_default_logger, "IO_URING: submit write entry: sockfd: %02d sqe: %p user_data: %p iov_base: %p iovec_len: %04ld",
instance->sockfd, sqe, (void *)sqe->user_data, user_data->vec.iov_base, user_data->vec.iov_len);
}
io_uring_submit(&instance->ring);
return 0;
}
// return 0 : success
// reutrn -1 : error
int io_uring_register_read_callback(struct io_uring_instance *instance, read_callback *read_cb, void *read_cb_args)
{
if (instance->read_cb)
{
TFE_LOG_ERROR(g_default_logger, "IO_URING: cannot register read callback multiple times");
return -1;
}
instance->read_cb = read_cb;
instance->read_cb_args = read_cb_args;
for (int i = 0; i < instance->read_buff_num; i++)
{
struct user_data *data = instance->read_buffs[i];
if (io_uring_submit_read_entry(instance, data) == -1)
{
return -1;
}
}
return 0;
}
// returns the number of processed entrys
int io_uring_peek_ready_entrys(struct io_uring_instance *instance)
{
int ret = 0;
int total = 0;
struct io_uring_cqe *cqes[MAX_BATCH_CQE_NUM];
while (1)
{
ret = io_uring_peek_batch_cqe(&instance->ring, cqes, MAX_BATCH_CQE_NUM);
if (ret <= 0)
{
return total;
}
total += ret;
for (int i = 0; i < ret; i++)
{
struct io_uring_cqe *cqe = cqes[i];
if (cqe == NULL || (void *)cqe->user_data == NULL)
{
TFE_LOG_ERROR(g_default_logger, "IO_URING: unable to get io_uring cqe, null is return");
continue;
}
struct user_data *user_data = (struct user_data *)cqe->user_data;
if (instance->config.enable_debug)
{
TFE_LOG_DEBUG(g_default_logger, "IO_URING: handle %s entry: sockfd: %02d cqe: %p user_data: %p iov_base: %p iovec_len: %04ld cqe->res: %04d",
entry_type_to_string(user_data->type), instance->sockfd, cqe, (void *)user_data, user_data->vec.iov_base, user_data->vec.iov_len, cqe->res);
}
switch (user_data->type)
{
case ENTRY_TYPE_READ:
if (cqe->res > 0)
{
if (instance->read_cb != NULL)
{
instance->read_cb((const char *)user_data->vec.iov_base, cqe->res, instance->read_cb_args);
}
}
else
{
TFE_LOG_ERROR(g_default_logger, "IO_URING: handle %s entry: sockfd: %02d (%d, %s)",
entry_type_to_string(user_data->type), instance->sockfd, -cqe->res, strerror(-cqe->res));
}
cqe->user_data = 0;
io_uring_cqe_seen(&instance->ring, cqe);
io_uring_submit_read_entry(instance, user_data);
break;
case ENTRY_TYPE_WRITE:
if (cqe->res > 0)
{
// data->write_cb
}
else
{
TFE_LOG_ERROR(g_default_logger, "IO_URING: handle %s entry: sockfd: %02d (%d, %s)",
entry_type_to_string(user_data->type), instance->sockfd, -cqe->res, strerror(-cqe->res));
}
user_data_destory(user_data);
cqe->user_data = 0;
io_uring_cqe_seen(&instance->ring, cqe);
break;
default:
user_data_destory(user_data);
cqe->user_data = 0;
io_uring_cqe_seen(&instance->ring, cqe);
break;
}
}
}
}
#else
struct io_uring_instance
{
};
struct io_uring_instance *io_uring_instance_create(int sockfd, int eventfd, int ring_size, int buff_size, int flags, int sq_thread_idle, int enable_debug)
{
TFE_LOG_ERROR(g_default_logger, "IO_URING: feature not support on current system");
return NULL;
}
void io_uring_instance_destory(struct io_uring_instance *instance)
{
TFE_LOG_ERROR(g_default_logger, "IO_URING: feature not support on current system");
}
int io_uring_register_read_callback(struct io_uring_instance *instance, read_callback *read_cb, void *cb_arg)
{
TFE_LOG_ERROR(g_default_logger, "IO_URING: feature not support on current system");
return -1;
}
int io_uring_submit_write_entry(struct io_uring_instance *instance, const char *data, int len)
{
TFE_LOG_ERROR(g_default_logger, "IO_URING: feature not support on current system");
return -1;
}
int io_uring_peek_ready_entrys(struct io_uring_instance *instance)
{
TFE_LOG_ERROR(g_default_logger, "IO_URING: feature not support on current system");
return 0;
}
#endif

146
common/src/tap.cpp Normal file
View File

@@ -0,0 +1,146 @@
#include <stdio.h>
#include <fcntl.h>
#include <errno.h>
#include <string.h>
#include <unistd.h>
#include <net/if.h>
#include <sys/ioctl.h>
#include <linux/if_tun.h>
#include "tfe_utils.h"
#ifndef TUN_PATH
#define TUN_PATH "/dev/net/tun"
#endif
extern void *g_default_logger;
/*
* IFF_TUN : TUN device (IP)
* IFF_TAP : TAP device (Ethernet)
* IFF_NO_PI : Do not provide packet information
* IFF_MULTI_QUEUE : Create a queue of multiqueue device
* IFF_ONE_QUEUE : Create a queue of oniequeue device
*/
int tap_open(const char *eth, int flags)
{
int sockfd = open(TUN_PATH, O_RDWR);
if (sockfd == -1)
{
TFE_LOG_ERROR(g_default_logger, "unable to open " TUN_PATH ", %s.\n", strerror(errno));
return -1;
}
struct ifreq ifr;
memset(&ifr, 0, sizeof(ifr));
ifr.ifr_flags = flags;
strcpy(ifr.ifr_name, eth);
if (ioctl(sockfd, TUNSETIFF, &ifr) == -1)
{
TFE_LOG_ERROR(g_default_logger, "unable to attach %s, %s.\n", eth, strerror(errno));
goto error;
}
/*
* The TUNSETPERSIST ioctl can be used to make the TUN/TAP interface persistent.
* In this mode, the interface won't be destroyed when the last process closes the associated /dev/net/tun file descriptor.
*/
if (ioctl(sockfd, TUNSETPERSIST, 1) == -1)
{
TFE_LOG_ERROR(g_default_logger, "unable to set persist on %s, %s.\n", eth, strerror(errno));
goto error;
}
if (ioctl(sockfd, TUNSETOWNER, 0) == -1)
{
TFE_LOG_ERROR(g_default_logger, "unable to set owner on %s, %s.\n", eth, strerror(errno));
goto error;
}
if (ioctl(sockfd, TUNSETGROUP, 0) == -1)
{
TFE_LOG_ERROR(g_default_logger, "unable to set group on %s, %s.\n", eth, strerror(errno));
goto error;
}
if (fcntl(sockfd, F_SETFL, fcntl(sockfd, F_GETFL) | O_NONBLOCK) == -1)
{
TFE_LOG_ERROR(g_default_logger, "unable to set nonblock on fd: %d, %s.\n", sockfd, strerror(errno));
return -1;
}
return sockfd;
error:
if (sockfd > 0)
{
close(sockfd);
}
return -1;
}
void tap_close(int sockfd)
{
if (sockfd > 0)
{
close(sockfd);
}
}
int tap_up_link(const char *eth)
{
int sockfd = socket(PF_INET, SOCK_DGRAM, 0);
if (sockfd == -1)
{
TFE_LOG_ERROR(g_default_logger, "unable to create socket, %s.\n", strerror(errno));
return -1;
}
struct ifreq ifr;
memset(&ifr, 0, sizeof(ifr));
strcpy(ifr.ifr_name, eth);
if (ioctl(sockfd, SIOCGIFFLAGS, &ifr) == -1)
{
TFE_LOG_ERROR(g_default_logger, "unable to get link status on %s, %s.\n", eth, strerror(errno));
close(sockfd);
return -1;
}
if ((ifr.ifr_flags & IFF_UP) == 0)
{
ifr.ifr_flags |= IFF_UP;
if (ioctl(sockfd, SIOCSIFFLAGS, &ifr) < 0)
{
TFE_LOG_ERROR(g_default_logger, "unable to set link up on %s, %s.\n", eth, strerror(errno));
close(sockfd);
return -1;
}
}
close(sockfd);
return 0;
}
int tap_get_mtu(const char *eth)
{
int sockfd = socket(PF_INET, SOCK_DGRAM, 0);
if (sockfd == -1)
{
TFE_LOG_ERROR(g_default_logger, "unable to create socket, %s.\n", strerror(errno));
return -1;
}
struct ifreq ifr;
memset(&ifr, 0, sizeof(ifr));
strcpy(ifr.ifr_name, eth);
if (ioctl(sockfd, SIOCGIFMTU, &ifr) < 0)
{
TFE_LOG_ERROR(g_default_logger, "unable to get mtu on %s, %s.\n", eth, strerror(errno));
close(sockfd);
return -1;
}
close(sockfd);
return ifr.ifr_mtu;
}