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-rw-r--r--tools/net/Makefile2
-rw-r--r--tools/net/bpf_dbg.c121
-rw-r--r--tools/net/bpf_exp.l1
-rw-r--r--tools/net/bpf_exp.y11
-rw-r--r--tools/net/bpf_jit_disasm.c20
5 files changed, 77 insertions, 78 deletions
diff --git a/tools/net/Makefile b/tools/net/Makefile
index 004cd74734b..ee577ea03ba 100644
--- a/tools/net/Makefile
+++ b/tools/net/Makefile
@@ -12,7 +12,7 @@ YACC = bison
all : bpf_jit_disasm bpf_dbg bpf_asm
-bpf_jit_disasm : CFLAGS = -Wall -O2
+bpf_jit_disasm : CFLAGS = -Wall -O2 -DPACKAGE='bpf_jit_disasm'
bpf_jit_disasm : LDLIBS = -lopcodes -lbfd -ldl
bpf_jit_disasm : bpf_jit_disasm.o
diff --git a/tools/net/bpf_dbg.c b/tools/net/bpf_dbg.c
index 65dc757f7f7..9a287bec695 100644
--- a/tools/net/bpf_dbg.c
+++ b/tools/net/bpf_dbg.c
@@ -87,9 +87,6 @@
__attribute__ ((format (printf, (pos_fmtstr), (pos_fmtargs))))
#endif
-#define CMD(_name, _func) { .name = _name, .func = _func, }
-#define OP(_op, _name) [_op] = _name
-
enum {
CMD_OK,
CMD_ERR,
@@ -145,32 +142,32 @@ static size_t pcap_map_size = 0;
static char *pcap_ptr_va_start, *pcap_ptr_va_curr;
static const char * const op_table[] = {
- OP(BPF_ST, "st"),
- OP(BPF_STX, "stx"),
- OP(BPF_LD_B, "ldb"),
- OP(BPF_LD_H, "ldh"),
- OP(BPF_LD_W, "ld"),
- OP(BPF_LDX, "ldx"),
- OP(BPF_LDX_B, "ldxb"),
- OP(BPF_JMP_JA, "ja"),
- OP(BPF_JMP_JEQ, "jeq"),
- OP(BPF_JMP_JGT, "jgt"),
- OP(BPF_JMP_JGE, "jge"),
- OP(BPF_JMP_JSET, "jset"),
- OP(BPF_ALU_ADD, "add"),
- OP(BPF_ALU_SUB, "sub"),
- OP(BPF_ALU_MUL, "mul"),
- OP(BPF_ALU_DIV, "div"),
- OP(BPF_ALU_MOD, "mod"),
- OP(BPF_ALU_NEG, "neg"),
- OP(BPF_ALU_AND, "and"),
- OP(BPF_ALU_OR, "or"),
- OP(BPF_ALU_XOR, "xor"),
- OP(BPF_ALU_LSH, "lsh"),
- OP(BPF_ALU_RSH, "rsh"),
- OP(BPF_MISC_TAX, "tax"),
- OP(BPF_MISC_TXA, "txa"),
- OP(BPF_RET, "ret"),
+ [BPF_ST] = "st",
+ [BPF_STX] = "stx",
+ [BPF_LD_B] = "ldb",
+ [BPF_LD_H] = "ldh",
+ [BPF_LD_W] = "ld",
+ [BPF_LDX] = "ldx",
+ [BPF_LDX_B] = "ldxb",
+ [BPF_JMP_JA] = "ja",
+ [BPF_JMP_JEQ] = "jeq",
+ [BPF_JMP_JGT] = "jgt",
+ [BPF_JMP_JGE] = "jge",
+ [BPF_JMP_JSET] = "jset",
+ [BPF_ALU_ADD] = "add",
+ [BPF_ALU_SUB] = "sub",
+ [BPF_ALU_MUL] = "mul",
+ [BPF_ALU_DIV] = "div",
+ [BPF_ALU_MOD] = "mod",
+ [BPF_ALU_NEG] = "neg",
+ [BPF_ALU_AND] = "and",
+ [BPF_ALU_OR] = "or",
+ [BPF_ALU_XOR] = "xor",
+ [BPF_ALU_LSH] = "lsh",
+ [BPF_ALU_RSH] = "rsh",
+ [BPF_MISC_TAX] = "tax",
+ [BPF_MISC_TXA] = "txa",
+ [BPF_RET] = "ret",
};
static __check_format_printf(1, 2) int rl_printf(const char *fmt, ...)
@@ -823,7 +820,7 @@ do_div:
r->A &= r->X;
break;
case BPF_ALU_AND | BPF_K:
- r->A &= r->X;
+ r->A &= K;
break;
case BPF_ALU_OR | BPF_X:
r->A |= r->X;
@@ -1127,7 +1124,6 @@ static int cmd_step(char *num)
static int cmd_select(char *num)
{
unsigned int which, i;
- struct pcap_pkthdr *hdr;
bool have_next = true;
if (!pcap_loaded() || strlen(num) == 0)
@@ -1144,7 +1140,7 @@ static int cmd_select(char *num)
for (i = 0; i < which && (have_next = pcap_next_pkt()); i++)
/* noop */;
- if (!have_next || (hdr = pcap_curr_pkt()) == NULL) {
+ if (!have_next || pcap_curr_pkt() == NULL) {
rl_printf("no packet #%u available!\n", which);
pcap_reset_pkt();
return CMD_ERR;
@@ -1177,9 +1173,8 @@ static int cmd_breakpoint(char *subcmd)
static int cmd_run(char *num)
{
static uint32_t pass = 0, fail = 0;
- struct pcap_pkthdr *hdr;
bool has_limit = true;
- int ret, pkts = 0, i = 0;
+ int pkts = 0, i = 0;
if (!bpf_prog_loaded() || !pcap_loaded())
return CMD_ERR;
@@ -1189,10 +1184,10 @@ static int cmd_run(char *num)
has_limit = false;
do {
- hdr = pcap_curr_pkt();
- ret = bpf_run_all(bpf_image, bpf_prog_len,
- (uint8_t *) hdr + sizeof(*hdr),
- hdr->caplen, hdr->len);
+ struct pcap_pkthdr *hdr = pcap_curr_pkt();
+ int ret = bpf_run_all(bpf_image, bpf_prog_len,
+ (uint8_t *) hdr + sizeof(*hdr),
+ hdr->caplen, hdr->len);
if (ret > 0)
pass++;
else if (ret == 0)
@@ -1245,14 +1240,14 @@ static int cmd_quit(char *dontcare)
}
static const struct shell_cmd cmds[] = {
- CMD("load", cmd_load),
- CMD("select", cmd_select),
- CMD("step", cmd_step),
- CMD("run", cmd_run),
- CMD("breakpoint", cmd_breakpoint),
- CMD("disassemble", cmd_disassemble),
- CMD("dump", cmd_dump),
- CMD("quit", cmd_quit),
+ { .name = "load", .func = cmd_load },
+ { .name = "select", .func = cmd_select },
+ { .name = "step", .func = cmd_step },
+ { .name = "run", .func = cmd_run },
+ { .name = "breakpoint", .func = cmd_breakpoint },
+ { .name = "disassemble", .func = cmd_disassemble },
+ { .name = "dump", .func = cmd_dump },
+ { .name = "quit", .func = cmd_quit },
};
static int execf(char *arg)
@@ -1280,7 +1275,6 @@ out:
static char *shell_comp_gen(const char *buf, int state)
{
static int list_index, len;
- const char *name;
if (!state) {
list_index = 0;
@@ -1288,9 +1282,9 @@ static char *shell_comp_gen(const char *buf, int state)
}
for (; list_index < array_size(cmds); ) {
- name = cmds[list_index].name;
- list_index++;
+ const char *name = cmds[list_index].name;
+ list_index++;
if (strncmp(name, buf, len) == 0)
return strdup(name);
}
@@ -1322,16 +1316,9 @@ static void init_shell(FILE *fin, FILE *fout)
{
char file[128];
- memset(file, 0, sizeof(file));
- snprintf(file, sizeof(file) - 1,
- "%s/.bpf_dbg_history", getenv("HOME"));
-
+ snprintf(file, sizeof(file), "%s/.bpf_dbg_history", getenv("HOME"));
read_history(file);
- memset(file, 0, sizeof(file));
- snprintf(file, sizeof(file) - 1,
- "%s/.bpf_dbg_init", getenv("HOME"));
-
rl_instream = fin;
rl_outstream = fout;
@@ -1348,37 +1335,41 @@ static void init_shell(FILE *fin, FILE *fout)
rl_bind_key_in_map('\t', rl_complete, emacs_meta_keymap);
rl_bind_key_in_map('\033', rl_complete, emacs_meta_keymap);
+ snprintf(file, sizeof(file), "%s/.bpf_dbg_init", getenv("HOME"));
rl_read_init_file(file);
+
rl_prep_terminal(0);
rl_set_signals();
signal(SIGINT, intr_shell);
}
-static void exit_shell(void)
+static void exit_shell(FILE *fin, FILE *fout)
{
char file[128];
- memset(file, 0, sizeof(file));
- snprintf(file, sizeof(file) - 1,
- "%s/.bpf_dbg_history", getenv("HOME"));
-
+ snprintf(file, sizeof(file), "%s/.bpf_dbg_history", getenv("HOME"));
write_history(file);
+
clear_history();
rl_deprep_terminal();
try_close_pcap();
+
+ if (fin != stdin)
+ fclose(fin);
+ if (fout != stdout)
+ fclose(fout);
}
static int run_shell_loop(FILE *fin, FILE *fout)
{
char *buf;
- int ret;
init_shell(fin, fout);
while ((buf = readline("> ")) != NULL) {
- ret = execf(buf);
+ int ret = execf(buf);
if (ret == CMD_EX)
break;
if (ret == CMD_OK && strlen(buf) > 0)
@@ -1387,7 +1378,7 @@ static int run_shell_loop(FILE *fin, FILE *fout)
free(buf);
}
- exit_shell();
+ exit_shell(fin, fout);
return 0;
}
diff --git a/tools/net/bpf_exp.l b/tools/net/bpf_exp.l
index bf7be77ddd6..833a96611da 100644
--- a/tools/net/bpf_exp.l
+++ b/tools/net/bpf_exp.l
@@ -92,6 +92,7 @@ extern void yyerror(const char *str);
"#"?("cpu") { return K_CPU; }
"#"?("vlan_tci") { return K_VLANT; }
"#"?("vlan_pr") { return K_VLANP; }
+"#"?("rand") { return K_RAND; }
":" { return ':'; }
"," { return ','; }
diff --git a/tools/net/bpf_exp.y b/tools/net/bpf_exp.y
index d15efc989ef..e6306c51c26 100644
--- a/tools/net/bpf_exp.y
+++ b/tools/net/bpf_exp.y
@@ -56,7 +56,7 @@ static void bpf_set_jmp_label(char *label, enum jmp_type type);
%token OP_LDXI
%token K_PKT_LEN K_PROTO K_TYPE K_NLATTR K_NLATTR_NEST K_MARK K_QUEUE K_HATYPE
-%token K_RXHASH K_CPU K_IFIDX K_VLANT K_VLANP K_POFF
+%token K_RXHASH K_CPU K_IFIDX K_VLANT K_VLANP K_POFF K_RAND
%token ':' ',' '[' ']' '(' ')' 'x' 'a' '+' 'M' '*' '&' '#' '%'
@@ -164,6 +164,9 @@ ldb
| OP_LDB K_POFF {
bpf_set_curr_instr(BPF_LD | BPF_B | BPF_ABS, 0, 0,
SKF_AD_OFF + SKF_AD_PAY_OFFSET); }
+ | OP_LDB K_RAND {
+ bpf_set_curr_instr(BPF_LD | BPF_B | BPF_ABS, 0, 0,
+ SKF_AD_OFF + SKF_AD_RANDOM); }
;
ldh
@@ -212,6 +215,9 @@ ldh
| OP_LDH K_POFF {
bpf_set_curr_instr(BPF_LD | BPF_H | BPF_ABS, 0, 0,
SKF_AD_OFF + SKF_AD_PAY_OFFSET); }
+ | OP_LDH K_RAND {
+ bpf_set_curr_instr(BPF_LD | BPF_H | BPF_ABS, 0, 0,
+ SKF_AD_OFF + SKF_AD_RANDOM); }
;
ldi
@@ -265,6 +271,9 @@ ld
| OP_LD K_POFF {
bpf_set_curr_instr(BPF_LD | BPF_W | BPF_ABS, 0, 0,
SKF_AD_OFF + SKF_AD_PAY_OFFSET); }
+ | OP_LD K_RAND {
+ bpf_set_curr_instr(BPF_LD | BPF_W | BPF_ABS, 0, 0,
+ SKF_AD_OFF + SKF_AD_RANDOM); }
| OP_LD 'M' '[' number ']' {
bpf_set_curr_instr(BPF_LD | BPF_MEM, 0, 0, $4); }
| OP_LD '[' 'x' '+' number ']' {
diff --git a/tools/net/bpf_jit_disasm.c b/tools/net/bpf_jit_disasm.c
index cfe0cdcda3d..c5baf9c591b 100644
--- a/tools/net/bpf_jit_disasm.c
+++ b/tools/net/bpf_jit_disasm.c
@@ -43,8 +43,7 @@ static void get_exec_path(char *tpath, size_t size)
free(path);
}
-static void get_asm_insns(uint8_t *image, size_t len, unsigned long base,
- int opcodes)
+static void get_asm_insns(uint8_t *image, size_t len, int opcodes)
{
int count, i, pc = 0;
char tpath[256];
@@ -107,13 +106,13 @@ static void put_klog_buff(char *buff)
}
static int get_last_jit_image(char *haystack, size_t hlen,
- uint8_t *image, size_t ilen,
- unsigned long *base)
+ uint8_t *image, size_t ilen)
{
char *ptr, *pptr, *tmp;
off_t off = 0;
int ret, flen, proglen, pass, ulen = 0;
regmatch_t pmatch[1];
+ unsigned long base;
regex_t regex;
if (hlen == 0)
@@ -136,7 +135,7 @@ static int get_last_jit_image(char *haystack, size_t hlen,
ptr = haystack + off - (pmatch[0].rm_eo - pmatch[0].rm_so);
ret = sscanf(ptr, "flen=%d proglen=%d pass=%d image=%lx",
- &flen, &proglen, &pass, base);
+ &flen, &proglen, &pass, &base);
if (ret != 4)
return 0;
@@ -162,7 +161,7 @@ static int get_last_jit_image(char *haystack, size_t hlen,
assert(ulen == proglen);
printf("%d bytes emitted from JIT compiler (pass:%d, flen:%d)\n",
proglen, pass, flen);
- printf("%lx + <x>:\n", *base);
+ printf("%lx + <x>:\n", base);
regfree(&regex);
return ulen;
@@ -172,8 +171,7 @@ int main(int argc, char **argv)
{
int len, klen, opcodes = 0;
char *kbuff;
- unsigned long base;
- uint8_t image[4096];
+ static uint8_t image[32768];
if (argc > 1) {
if (!strncmp("-o", argv[argc - 1], 2)) {
@@ -189,9 +187,9 @@ int main(int argc, char **argv)
kbuff = get_klog_buff(&klen);
- len = get_last_jit_image(kbuff, klen, image, sizeof(image), &base);
- if (len > 0 && base > 0)
- get_asm_insns(image, len, base, opcodes);
+ len = get_last_jit_image(kbuff, klen, image, sizeof(image));
+ if (len > 0)
+ get_asm_insns(image, len, opcodes);
put_klog_buff(kbuff);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-09 20:41:33 +0000