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-rw-r--r--samples/bpf/Makefile8
-rw-r--r--samples/bpf/bpf_insn.h20
-rw-r--r--samples/bpf/xdp1_user.c34
-rw-r--r--samples/bpf/xdp_adjust_tail_user.c38
-rw-r--r--samples/bpf/xdp_redirect_cpu_user.c196
-rw-r--r--samples/bpf/xdp_redirect_map_user.c106
-rw-r--r--samples/bpf/xdp_redirect_user.c103
-rw-r--r--samples/bpf/xdp_router_ipv4_user.c179
-rw-r--r--samples/bpf/xdp_rxq_info_user.c41
-rw-r--r--samples/bpf/xdp_sample_pkts_user.c81
-rw-r--r--samples/bpf/xdp_tx_iptunnel_user.c71
-rw-r--r--samples/bpf/xdpsock_user.c30
12 files changed, 710 insertions, 197 deletions
diff --git a/samples/bpf/Makefile b/samples/bpf/Makefile
index db1a91dfa702..a0ef7eddd0b3 100644
--- a/samples/bpf/Makefile
+++ b/samples/bpf/Makefile
@@ -87,18 +87,18 @@ test_cgrp2_sock2-objs := bpf_load.o test_cgrp2_sock2.o
xdp1-objs := xdp1_user.o
# reuse xdp1 source intentionally
xdp2-objs := xdp1_user.o
-xdp_router_ipv4-objs := bpf_load.o xdp_router_ipv4_user.o
+xdp_router_ipv4-objs := xdp_router_ipv4_user.o
test_current_task_under_cgroup-objs := bpf_load.o $(CGROUP_HELPERS) \
test_current_task_under_cgroup_user.o
trace_event-objs := bpf_load.o trace_event_user.o $(TRACE_HELPERS)
sampleip-objs := bpf_load.o sampleip_user.o $(TRACE_HELPERS)
tc_l2_redirect-objs := bpf_load.o tc_l2_redirect_user.o
lwt_len_hist-objs := bpf_load.o lwt_len_hist_user.o
-xdp_tx_iptunnel-objs := bpf_load.o xdp_tx_iptunnel_user.o
+xdp_tx_iptunnel-objs := xdp_tx_iptunnel_user.o
test_map_in_map-objs := bpf_load.o test_map_in_map_user.o
per_socket_stats_example-objs := cookie_uid_helper_example.o
-xdp_redirect-objs := bpf_load.o xdp_redirect_user.o
-xdp_redirect_map-objs := bpf_load.o xdp_redirect_map_user.o
+xdp_redirect-objs := xdp_redirect_user.o
+xdp_redirect_map-objs := xdp_redirect_map_user.o
xdp_redirect_cpu-objs := bpf_load.o xdp_redirect_cpu_user.o
xdp_monitor-objs := bpf_load.o xdp_monitor_user.o
xdp_rxq_info-objs := xdp_rxq_info_user.o
diff --git a/samples/bpf/bpf_insn.h b/samples/bpf/bpf_insn.h
index 20dc5cefec84..544237980582 100644
--- a/samples/bpf/bpf_insn.h
+++ b/samples/bpf/bpf_insn.h
@@ -164,6 +164,16 @@ struct bpf_insn;
.off = OFF, \
.imm = 0 })
+/* Like BPF_JMP_REG, but with 32-bit wide operands for comparison. */
+
+#define BPF_JMP32_REG(OP, DST, SRC, OFF) \
+ ((struct bpf_insn) { \
+ .code = BPF_JMP32 | BPF_OP(OP) | BPF_X, \
+ .dst_reg = DST, \
+ .src_reg = SRC, \
+ .off = OFF, \
+ .imm = 0 })
+
/* Conditional jumps against immediates, if (dst_reg 'op' imm32) goto pc + off16 */
#define BPF_JMP_IMM(OP, DST, IMM, OFF) \
@@ -174,6 +184,16 @@ struct bpf_insn;
.off = OFF, \
.imm = IMM })
+/* Like BPF_JMP_IMM, but with 32-bit wide operands for comparison. */
+
+#define BPF_JMP32_IMM(OP, DST, IMM, OFF) \
+ ((struct bpf_insn) { \
+ .code = BPF_JMP32 | BPF_OP(OP) | BPF_K, \
+ .dst_reg = DST, \
+ .src_reg = 0, \
+ .off = OFF, \
+ .imm = IMM })
+
/* Raw code statement block */
#define BPF_RAW_INSN(CODE, DST, SRC, OFF, IMM) \
diff --git a/samples/bpf/xdp1_user.c b/samples/bpf/xdp1_user.c
index 8bfda95c77ad..6a64e93365e1 100644
--- a/samples/bpf/xdp1_user.c
+++ b/samples/bpf/xdp1_user.c
@@ -22,11 +22,23 @@
#include "bpf/libbpf.h"
static int ifindex;
-static __u32 xdp_flags;
+static __u32 xdp_flags = XDP_FLAGS_UPDATE_IF_NOEXIST;
+static __u32 prog_id;
static void int_exit(int sig)
{
- bpf_set_link_xdp_fd(ifindex, -1, xdp_flags);
+ __u32 curr_prog_id = 0;
+
+ if (bpf_get_link_xdp_id(ifindex, &curr_prog_id, xdp_flags)) {
+ printf("bpf_get_link_xdp_id failed\n");
+ exit(1);
+ }
+ if (prog_id == curr_prog_id)
+ bpf_set_link_xdp_fd(ifindex, -1, xdp_flags);
+ else if (!curr_prog_id)
+ printf("couldn't find a prog id on a given interface\n");
+ else
+ printf("program on interface changed, not removing\n");
exit(0);
}
@@ -63,7 +75,8 @@ static void usage(const char *prog)
"usage: %s [OPTS] IFACE\n\n"
"OPTS:\n"
" -S use skb-mode\n"
- " -N enforce native mode\n",
+ " -N enforce native mode\n"
+ " -F force loading prog\n",
prog);
}
@@ -73,11 +86,14 @@ int main(int argc, char **argv)
struct bpf_prog_load_attr prog_load_attr = {
.prog_type = BPF_PROG_TYPE_XDP,
};
- const char *optstr = "SN";
+ struct bpf_prog_info info = {};
+ __u32 info_len = sizeof(info);
+ const char *optstr = "FSN";
int prog_fd, map_fd, opt;
struct bpf_object *obj;
struct bpf_map *map;
char filename[256];
+ int err;
while ((opt = getopt(argc, argv, optstr)) != -1) {
switch (opt) {
@@ -87,6 +103,9 @@ int main(int argc, char **argv)
case 'N':
xdp_flags |= XDP_FLAGS_DRV_MODE;
break;
+ case 'F':
+ xdp_flags &= ~XDP_FLAGS_UPDATE_IF_NOEXIST;
+ break;
default:
usage(basename(argv[0]));
return 1;
@@ -135,6 +154,13 @@ int main(int argc, char **argv)
return 1;
}
+ err = bpf_obj_get_info_by_fd(prog_fd, &info, &info_len);
+ if (err) {
+ printf("can't get prog info - %s\n", strerror(errno));
+ return err;
+ }
+ prog_id = info.id;
+
poll_stats(map_fd, 2);
return 0;
diff --git a/samples/bpf/xdp_adjust_tail_user.c b/samples/bpf/xdp_adjust_tail_user.c
index 3042ce37dae8..07e1b9269e49 100644
--- a/samples/bpf/xdp_adjust_tail_user.c
+++ b/samples/bpf/xdp_adjust_tail_user.c
@@ -24,12 +24,25 @@
#define STATS_INTERVAL_S 2U
static int ifindex = -1;
-static __u32 xdp_flags;
+static __u32 xdp_flags = XDP_FLAGS_UPDATE_IF_NOEXIST;
+static __u32 prog_id;
static void int_exit(int sig)
{
- if (ifindex > -1)
- bpf_set_link_xdp_fd(ifindex, -1, xdp_flags);
+ __u32 curr_prog_id = 0;
+
+ if (ifindex > -1) {
+ if (bpf_get_link_xdp_id(ifindex, &curr_prog_id, xdp_flags)) {
+ printf("bpf_get_link_xdp_id failed\n");
+ exit(1);
+ }
+ if (prog_id == curr_prog_id)
+ bpf_set_link_xdp_fd(ifindex, -1, xdp_flags);
+ else if (!curr_prog_id)
+ printf("couldn't find a prog id on a given iface\n");
+ else
+ printf("program on interface changed, not removing\n");
+ }
exit(0);
}
@@ -60,6 +73,7 @@ static void usage(const char *cmd)
printf(" -T <stop-after-X-seconds> Default: 0 (forever)\n");
printf(" -S use skb-mode\n");
printf(" -N enforce native mode\n");
+ printf(" -F force loading prog\n");
printf(" -h Display this help\n");
}
@@ -70,12 +84,15 @@ int main(int argc, char **argv)
.prog_type = BPF_PROG_TYPE_XDP,
};
unsigned char opt_flags[256] = {};
+ const char *optstr = "i:T:SNFh";
+ struct bpf_prog_info info = {};
+ __u32 info_len = sizeof(info);
unsigned int kill_after_s = 0;
- const char *optstr = "i:T:SNh";
int i, prog_fd, map_fd, opt;
struct bpf_object *obj;
struct bpf_map *map;
char filename[256];
+ int err;
for (i = 0; i < strlen(optstr); i++)
if (optstr[i] != 'h' && 'a' <= optstr[i] && optstr[i] <= 'z')
@@ -96,6 +113,9 @@ int main(int argc, char **argv)
case 'N':
xdp_flags |= XDP_FLAGS_DRV_MODE;
break;
+ case 'F':
+ xdp_flags &= ~XDP_FLAGS_UPDATE_IF_NOEXIST;
+ break;
default:
usage(argv[0]);
return 1;
@@ -142,9 +162,15 @@ int main(int argc, char **argv)
return 1;
}
- poll_stats(map_fd, kill_after_s);
+ err = bpf_obj_get_info_by_fd(prog_fd, &info, &info_len);
+ if (err) {
+ printf("can't get prog info - %s\n", strerror(errno));
+ return 1;
+ }
+ prog_id = info.id;
- bpf_set_link_xdp_fd(ifindex, -1, xdp_flags);
+ poll_stats(map_fd, kill_after_s);
+ int_exit(0);
return 0;
}
diff --git a/samples/bpf/xdp_redirect_cpu_user.c b/samples/bpf/xdp_redirect_cpu_user.c
index 2d23054aaccf..586b294d72d3 100644
--- a/samples/bpf/xdp_redirect_cpu_user.c
+++ b/samples/bpf/xdp_redirect_cpu_user.c
@@ -24,20 +24,26 @@ static const char *__doc__ =
/* How many xdp_progs are defined in _kern.c */
#define MAX_PROG 6
-/* Wanted to get rid of bpf_load.h and fake-"libbpf.h" (and instead
- * use bpf/libbpf.h), but cannot as (currently) needed for XDP
- * attaching to a device via bpf_set_link_xdp_fd()
- */
#include <bpf/bpf.h>
-#include "bpf_load.h"
+#include "bpf/libbpf.h"
#include "bpf_util.h"
static int ifindex = -1;
static char ifname_buf[IF_NAMESIZE];
static char *ifname;
-
-static __u32 xdp_flags;
+static __u32 prog_id;
+
+static __u32 xdp_flags = XDP_FLAGS_UPDATE_IF_NOEXIST;
+static int cpu_map_fd;
+static int rx_cnt_map_fd;
+static int redirect_err_cnt_map_fd;
+static int cpumap_enqueue_cnt_map_fd;
+static int cpumap_kthread_cnt_map_fd;
+static int cpus_available_map_fd;
+static int cpus_count_map_fd;
+static int cpus_iterator_map_fd;
+static int exception_cnt_map_fd;
/* Exit return codes */
#define EXIT_OK 0
@@ -51,27 +57,50 @@ static const struct option long_options[] = {
{"help", no_argument, NULL, 'h' },
{"dev", required_argument, NULL, 'd' },
{"skb-mode", no_argument, NULL, 'S' },
- {"debug", no_argument, NULL, 'D' },
{"sec", required_argument, NULL, 's' },
- {"prognum", required_argument, NULL, 'p' },
+ {"progname", required_argument, NULL, 'p' },
{"qsize", required_argument, NULL, 'q' },
{"cpu", required_argument, NULL, 'c' },
{"stress-mode", no_argument, NULL, 'x' },
{"no-separators", no_argument, NULL, 'z' },
+ {"force", no_argument, NULL, 'F' },
{0, 0, NULL, 0 }
};
static void int_exit(int sig)
{
- fprintf(stderr,
- "Interrupted: Removing XDP program on ifindex:%d device:%s\n",
- ifindex, ifname);
- if (ifindex > -1)
- bpf_set_link_xdp_fd(ifindex, -1, xdp_flags);
+ __u32 curr_prog_id = 0;
+
+ if (ifindex > -1) {
+ if (bpf_get_link_xdp_id(ifindex, &curr_prog_id, xdp_flags)) {
+ printf("bpf_get_link_xdp_id failed\n");
+ exit(EXIT_FAIL);
+ }
+ if (prog_id == curr_prog_id) {
+ fprintf(stderr,
+ "Interrupted: Removing XDP program on ifindex:%d device:%s\n",
+ ifindex, ifname);
+ bpf_set_link_xdp_fd(ifindex, -1, xdp_flags);
+ } else if (!curr_prog_id) {
+ printf("couldn't find a prog id on a given iface\n");
+ } else {
+ printf("program on interface changed, not removing\n");
+ }
+ }
exit(EXIT_OK);
}
-static void usage(char *argv[])
+static void print_avail_progs(struct bpf_object *obj)
+{
+ struct bpf_program *pos;
+
+ bpf_object__for_each_program(pos, obj) {
+ if (bpf_program__is_xdp(pos))
+ printf(" %s\n", bpf_program__title(pos, false));
+ }
+}
+
+static void usage(char *argv[], struct bpf_object *obj)
{
int i;
@@ -89,6 +118,8 @@ static void usage(char *argv[])
long_options[i].val);
printf("\n");
}
+ printf("\n Programs to be used for --progname:\n");
+ print_avail_progs(obj);
printf("\n");
}
@@ -263,7 +294,7 @@ static __u64 calc_errs_pps(struct datarec *r,
static void stats_print(struct stats_record *stats_rec,
struct stats_record *stats_prev,
- int prog_num)
+ char *prog_name)
{
unsigned int nr_cpus = bpf_num_possible_cpus();
double pps = 0, drop = 0, err = 0;
@@ -273,7 +304,7 @@ static void stats_print(struct stats_record *stats_rec,
int i;
/* Header */
- printf("Running XDP/eBPF prog_num:%d\n", prog_num);
+ printf("Running XDP/eBPF prog_name:%s\n", prog_name);
printf("%-15s %-7s %-14s %-11s %-9s\n",
"XDP-cpumap", "CPU:to", "pps", "drop-pps", "extra-info");
@@ -424,20 +455,20 @@ static void stats_collect(struct stats_record *rec)
{
int fd, i;
- fd = map_fd[1]; /* map: rx_cnt */
+ fd = rx_cnt_map_fd;
map_collect_percpu(fd, 0, &rec->rx_cnt);
- fd = map_fd[2]; /* map: redirect_err_cnt */
+ fd = redirect_err_cnt_map_fd;
map_collect_percpu(fd, 1, &rec->redir_err);
- fd = map_fd[3]; /* map: cpumap_enqueue_cnt */
+ fd = cpumap_enqueue_cnt_map_fd;
for (i = 0; i < MAX_CPUS; i++)
map_collect_percpu(fd, i, &rec->enq[i]);
- fd = map_fd[4]; /* map: cpumap_kthread_cnt */
+ fd = cpumap_kthread_cnt_map_fd;
map_collect_percpu(fd, 0, &rec->kthread);
- fd = map_fd[8]; /* map: exception_cnt */
+ fd = exception_cnt_map_fd;
map_collect_percpu(fd, 0, &rec->exception);
}
@@ -462,7 +493,7 @@ static int create_cpu_entry(__u32 cpu, __u32 queue_size,
/* Add a CPU entry to cpumap, as this allocate a cpu entry in
* the kernel for the cpu.
*/
- ret = bpf_map_update_elem(map_fd[0], &cpu, &queue_size, 0);
+ ret = bpf_map_update_elem(cpu_map_fd, &cpu, &queue_size, 0);
if (ret) {
fprintf(stderr, "Create CPU entry failed (err:%d)\n", ret);
exit(EXIT_FAIL_BPF);
@@ -471,23 +502,22 @@ static int create_cpu_entry(__u32 cpu, __u32 queue_size,
/* Inform bpf_prog's that a new CPU is available to select
* from via some control maps.
*/
- /* map_fd[5] = cpus_available */
- ret = bpf_map_update_elem(map_fd[5], &avail_idx, &cpu, 0);
+ ret = bpf_map_update_elem(cpus_available_map_fd, &avail_idx, &cpu, 0);
if (ret) {
fprintf(stderr, "Add to avail CPUs failed\n");
exit(EXIT_FAIL_BPF);
}
/* When not replacing/updating existing entry, bump the count */
- /* map_fd[6] = cpus_count */
- ret = bpf_map_lookup_elem(map_fd[6], &key, &curr_cpus_count);
+ ret = bpf_map_lookup_elem(cpus_count_map_fd, &key, &curr_cpus_count);
if (ret) {
fprintf(stderr, "Failed reading curr cpus_count\n");
exit(EXIT_FAIL_BPF);
}
if (new) {
curr_cpus_count++;
- ret = bpf_map_update_elem(map_fd[6], &key, &curr_cpus_count, 0);
+ ret = bpf_map_update_elem(cpus_count_map_fd, &key,
+ &curr_cpus_count, 0);
if (ret) {
fprintf(stderr, "Failed write curr cpus_count\n");
exit(EXIT_FAIL_BPF);
@@ -510,8 +540,8 @@ static void mark_cpus_unavailable(void)
int ret, i;
for (i = 0; i < MAX_CPUS; i++) {
- /* map_fd[5] = cpus_available */
- ret = bpf_map_update_elem(map_fd[5], &i, &invalid_cpu, 0);
+ ret = bpf_map_update_elem(cpus_available_map_fd, &i,
+ &invalid_cpu, 0);
if (ret) {
fprintf(stderr, "Failed marking CPU unavailable\n");
exit(EXIT_FAIL_BPF);
@@ -531,7 +561,7 @@ static void stress_cpumap(void)
create_cpu_entry(1, 16000, 0, false);
}
-static void stats_poll(int interval, bool use_separators, int prog_num,
+static void stats_poll(int interval, bool use_separators, char *prog_name,
bool stress_mode)
{
struct stats_record *record, *prev;
@@ -547,7 +577,7 @@ static void stats_poll(int interval, bool use_separators, int prog_num,
while (1) {
swap(&prev, &record);
stats_collect(record);
- stats_print(record, prev, prog_num);
+ stats_print(record, prev, prog_name);
sleep(interval);
if (stress_mode)
stress_cpumap();
@@ -557,20 +587,55 @@ static void stats_poll(int interval, bool use_separators, int prog_num,
free_stats_record(prev);
}
+static int init_map_fds(struct bpf_object *obj)
+{
+ cpu_map_fd = bpf_object__find_map_fd_by_name(obj, "cpu_map");
+ rx_cnt_map_fd = bpf_object__find_map_fd_by_name(obj, "rx_cnt");
+ redirect_err_cnt_map_fd =
+ bpf_object__find_map_fd_by_name(obj, "redirect_err_cnt");
+ cpumap_enqueue_cnt_map_fd =
+ bpf_object__find_map_fd_by_name(obj, "cpumap_enqueue_cnt");
+ cpumap_kthread_cnt_map_fd =
+ bpf_object__find_map_fd_by_name(obj, "cpumap_kthread_cnt");
+ cpus_available_map_fd =
+ bpf_object__find_map_fd_by_name(obj, "cpus_available");
+ cpus_count_map_fd = bpf_object__find_map_fd_by_name(obj, "cpus_count");
+ cpus_iterator_map_fd =
+ bpf_object__find_map_fd_by_name(obj, "cpus_iterator");
+ exception_cnt_map_fd =
+ bpf_object__find_map_fd_by_name(obj, "exception_cnt");
+
+ if (cpu_map_fd < 0 || rx_cnt_map_fd < 0 ||
+ redirect_err_cnt_map_fd < 0 || cpumap_enqueue_cnt_map_fd < 0 ||
+ cpumap_kthread_cnt_map_fd < 0 || cpus_available_map_fd < 0 ||
+ cpus_count_map_fd < 0 || cpus_iterator_map_fd < 0 ||
+ exception_cnt_map_fd < 0)
+ return -ENOENT;
+
+ return 0;
+}
+
int main(int argc, char **argv)
{
struct rlimit r = {10 * 1024 * 1024, RLIM_INFINITY};
+ char *prog_name = "xdp_cpu_map5_lb_hash_ip_pairs";
+ struct bpf_prog_load_attr prog_load_attr = {
+ .prog_type = BPF_PROG_TYPE_UNSPEC,
+ };
+ struct bpf_prog_info info = {};
+ __u32 info_len = sizeof(info);
bool use_separators = true;
bool stress_mode = false;
+ struct bpf_program *prog;
+ struct bpf_object *obj;
char filename[256];
- bool debug = false;
int added_cpus = 0;
int longindex = 0;
int interval = 2;
- int prog_num = 5;
int add_cpu = -1;
+ int opt, err;
+ int prog_fd;
__u32 qsize;
- int opt;
/* Notice: choosing he queue size is very important with the
* ixgbe driver, because it's driver page recycling trick is
@@ -581,26 +646,29 @@ int main(int argc, char **argv)
qsize = 128+64;
snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]);
+ prog_load_attr.file = filename;
if (setrlimit(RLIMIT_MEMLOCK, &r)) {
perror("setrlimit(RLIMIT_MEMLOCK)");
return 1;
}
- if (load_bpf_file(filename)) {
- fprintf(stderr, "ERR in load_bpf_file(): %s", bpf_log_buf);
+ if (bpf_prog_load_xattr(&prog_load_attr, &obj, &prog_fd))
return EXIT_FAIL;
- }
- if (!prog_fd[0]) {
- fprintf(stderr, "ERR: load_bpf_file: %s\n", strerror(errno));
+ if (prog_fd < 0) {
+ fprintf(stderr, "ERR: bpf_prog_load_xattr: %s\n",
+ strerror(errno));
+ return EXIT_FAIL;
+ }
+ if (init_map_fds(obj) < 0) {
+ fprintf(stderr, "bpf_object__find_map_fd_by_name failed\n");
return EXIT_FAIL;
}
-
mark_cpus_unavailable();
/* Parse commands line args */
- while ((opt = getopt_long(argc, argv, "hSd:",
+ while ((opt = getopt_long(argc, argv, "hSd:s:p:q:c:xzF",
long_options, &longindex)) != -1) {
switch (opt) {
case 'd':
@@ -624,9 +692,6 @@ int main(int argc, char **argv)
case 'S':
xdp_flags |= XDP_FLAGS_SKB_MODE;
break;
- case 'D':
- debug = true;
- break;
case 'x':
stress_mode = true;
break;
@@ -635,13 +700,7 @@ int main(int argc, char **argv)
break;
case 'p':
/* Selecting eBPF prog to load */
- prog_num = atoi(optarg);
- if (prog_num < 0 || prog_num >= MAX_PROG) {
- fprintf(stderr,
- "--prognum too large err(%d):%s\n",
- errno, strerror(errno));
- goto error;
- }
+ prog_name = optarg;
break;
case 'c':
/* Add multiple CPUs */
@@ -658,24 +717,27 @@ int main(int argc, char **argv)
case 'q':
qsize = atoi(optarg);
break;
+ case 'F':
+ xdp_flags &= ~XDP_FLAGS_UPDATE_IF_NOEXIST;
+ break;
case 'h':
error:
default:
- usage(argv);
+ usage(argv, obj);
return EXIT_FAIL_OPTION;
}
}
/* Required option */
if (ifindex == -1) {
fprintf(stderr, "ERR: required option --dev missing\n");
- usage(argv);
+ usage(argv, obj);
return EXIT_FAIL_OPTION;
}
/* Required option */
if (add_cpu == -1) {
fprintf(stderr, "ERR: required option --cpu missing\n");
fprintf(stderr, " Specify multiple --cpu option to add more\n");
- usage(argv);
+ usage(argv, obj);
return EXIT_FAIL_OPTION;
}
@@ -683,16 +745,30 @@ int main(int argc, char **argv)
signal(SIGINT, int_exit);
signal(SIGTERM, int_exit);
- if (bpf_set_link_xdp_fd(ifindex, prog_fd[prog_num], xdp_flags) < 0) {
+ prog = bpf_object__find_program_by_title(obj, prog_name);
+ if (!prog) {
+ fprintf(stderr, "bpf_object__find_program_by_title failed\n");
+ return EXIT_FAIL;
+ }
+
+ prog_fd = bpf_program__fd(prog);
+ if (prog_fd < 0) {
+ fprintf(stderr, "bpf_program__fd failed\n");
+ return EXIT_FAIL;
+ }
+
+ if (bpf_set_link_xdp_fd(ifindex, prog_fd, xdp_flags) < 0) {
fprintf(stderr, "link set xdp fd failed\n");
return EXIT_FAIL_XDP;
}
- if (debug) {
- printf("Debug-mode reading trace pipe (fix #define DEBUG)\n");
- read_trace_pipe();
+ err = bpf_obj_get_info_by_fd(prog_fd, &info, &info_len);
+ if (err) {
+ printf("can't get prog info - %s\n", strerror(errno));
+ return err;
}
+ prog_id = info.id;
- stats_poll(interval, use_separators, prog_num, stress_mode);
+ stats_poll(interval, use_separators, prog_name, stress_mode);
return EXIT_OK;
}
diff --git a/samples/bpf/xdp_redirect_map_user.c b/samples/bpf/xdp_redirect_map_user.c
index 4445e76854b5..327226be5a06 100644
--- a/samples/bpf/xdp_redirect_map_user.c
+++ b/samples/bpf/xdp_redirect_map_user.c
@@ -22,21 +22,48 @@
#include <libgen.h>
#include <sys/resource.h>
-#include "bpf_load.h"
#include "bpf_util.h"
#include <bpf/bpf.h>
+#include "bpf/libbpf.h"
static int ifindex_in;
static int ifindex_out;
static bool ifindex_out_xdp_dummy_attached = true;
+static __u32 prog_id;
+static __u32 dummy_prog_id;
-static __u32 xdp_flags;
+static __u32 xdp_flags = XDP_FLAGS_UPDATE_IF_NOEXIST;
+static int rxcnt_map_fd;
static void int_exit(int sig)
{
- bpf_set_link_xdp_fd(ifindex_in, -1, xdp_flags);
- if (ifindex_out_xdp_dummy_attached)
- bpf_set_link_xdp_fd(ifindex_out, -1, xdp_flags);
+ __u32 curr_prog_id = 0;
+
+ if (bpf_get_link_xdp_id(ifindex_in, &curr_prog_id, xdp_flags)) {
+ printf("bpf_get_link_xdp_id failed\n");
+ exit(1);
+ }
+ if (prog_id == curr_prog_id)
+ bpf_set_link_xdp_fd(ifindex_in, -1, xdp_flags);
+ else if (!curr_prog_id)
+ printf("couldn't find a prog id on iface IN\n");
+ else
+ printf("program on iface IN changed, not removing\n");
+
+ if (ifindex_out_xdp_dummy_attached) {
+ curr_prog_id = 0;
+ if (bpf_get_link_xdp_id(ifindex_out, &curr_prog_id,
+ xdp_flags)) {
+ printf("bpf_get_link_xdp_id failed\n");
+ exit(1);
+ }
+ if (prog_id == curr_prog_id)
+ bpf_set_link_xdp_fd(ifindex_out, -1, xdp_flags);
+ else if (!curr_prog_id)
+ printf("couldn't find a prog id on iface OUT\n");
+ else
+ printf("program on iface OUT changed, not removing\n");
+ }
exit(0);
}
@@ -53,7 +80,7 @@ static void poll_stats(int interval, int ifindex)
int i;
sleep(interval);
- assert(bpf_map_lookup_elem(map_fd[1], &key, values) == 0);
+ assert(bpf_map_lookup_elem(rxcnt_map_fd, &key, values) == 0);
for (i = 0; i < nr_cpus; i++)
sum += (values[i] - prev[i]);
if (sum)
@@ -69,16 +96,26 @@ static void usage(const char *prog)
"usage: %s [OPTS] IFINDEX_IN IFINDEX_OUT\n\n"
"OPTS:\n"
" -S use skb-mode\n"
- " -N enforce native mode\n",
+ " -N enforce native mode\n"
+ " -F force loading prog\n",
prog);
}
int main(int argc, char **argv)
{
struct rlimit r = {RLIM_INFINITY, RLIM_INFINITY};
- const char *optstr = "SN";
- char filename[256];
+ struct bpf_prog_load_attr prog_load_attr = {
+ .prog_type = BPF_PROG_TYPE_XDP,
+ };
+ struct bpf_program *prog, *dummy_prog;
+ struct bpf_prog_info info = {};
+ __u32 info_len = sizeof(info);
+ int prog_fd, dummy_prog_fd;
+ const char *optstr = "FSN";
+ struct bpf_object *obj;
int ret, opt, key = 0;
+ char filename[256];
+ int tx_port_map_fd;
while ((opt = getopt(argc, argv, optstr)) != -1) {
switch (opt) {
@@ -88,6 +125,9 @@ int main(int argc, char **argv)
case 'N':
xdp_flags |= XDP_FLAGS_DRV_MODE;
break;
+ case 'F':
+ xdp_flags &= ~XDP_FLAGS_UPDATE_IF_NOEXIST;
+ break;
default:
usage(basename(argv[0]));
return 1;
@@ -109,37 +149,65 @@ int main(int argc, char **argv)
printf("input: %d output: %d\n", ifindex_in, ifindex_out);
snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]);
+ prog_load_attr.file = filename;
+
+ if (bpf_prog_load_xattr(&prog_load_attr, &obj, &prog_fd))
+ return 1;
- if (load_bpf_file(filename)) {
- printf("%s", bpf_log_buf);
+ prog = bpf_program__next(NULL, obj);
+ dummy_prog = bpf_program__next(prog, obj);
+ if (!prog || !dummy_prog) {
+ printf("finding a prog in obj file failed\n");
+ return 1;
+ }
+ /* bpf_prog_load_xattr gives us the pointer to first prog's fd,
+ * so we're missing only the fd for dummy prog
+ */
+ dummy_prog_fd = bpf_program__fd(dummy_prog);
+ if (prog_fd < 0 || dummy_prog_fd < 0) {
+ printf("bpf_prog_load_xattr: %s\n", strerror(errno));
return 1;
}
- if (!prog_fd[0]) {
- printf("load_bpf_file: %s\n", strerror(errno));
+ tx_port_map_fd = bpf_object__find_map_fd_by_name(obj, "tx_port");
+ rxcnt_map_fd = bpf_object__find_map_fd_by_name(obj, "rxcnt");
+ if (tx_port_map_fd < 0 || rxcnt_map_fd < 0) {
+ printf("bpf_object__find_map_fd_by_name failed\n");
return 1;
}
- if (bpf_set_link_xdp_fd(ifindex_in, prog_fd[0], xdp_flags) < 0) {
+ if (bpf_set_link_xdp_fd(ifindex_in, prog_fd, xdp_flags) < 0) {
printf("ERROR: link set xdp fd failed on %d\n", ifindex_in);
return 1;
}
+ ret = bpf_obj_get_info_by_fd(prog_fd, &info, &info_len);
+ if (ret) {
+ printf("can't get prog info - %s\n", strerror(errno));
+ return ret;
+ }
+ prog_id = info.id;
+
/* Loading dummy XDP prog on out-device */
- if (bpf_set_link_xdp_fd(ifindex_out, prog_fd[1],
+ if (bpf_set_link_xdp_fd(ifindex_out, dummy_prog_fd,
(xdp_flags | XDP_FLAGS_UPDATE_IF_NOEXIST)) < 0) {
printf("WARN: link set xdp fd failed on %d\n", ifindex_out);
ifindex_out_xdp_dummy_attached = false;
}
+ memset(&info, 0, sizeof(info));
+ ret = bpf_obj_get_info_by_fd(dummy_prog_fd, &info, &info_len);
+ if (ret) {
+ printf("can't get prog info - %s\n", strerror(errno));
+ return ret;
+ }
+ dummy_prog_id = info.id;
+
signal(SIGINT, int_exit);
signal(SIGTERM, int_exit);
- printf("map[0] (vports) = %i, map[1] (map) = %i, map[2] (count) = %i\n",
- map_fd[0], map_fd[1], map_fd[2]);
-
/* populate virtual to physical port map */
- ret = bpf_map_update_elem(map_fd[0], &key, &ifindex_out, 0);
+ ret = bpf_map_update_elem(tx_port_map_fd, &key, &ifindex_out, 0);
if (ret) {
perror("bpf_update_elem");
goto out;
diff --git a/samples/bpf/xdp_redirect_user.c b/samples/bpf/xdp_redirect_user.c
index 81a69e36cb78..a5d8ad3129ed 100644
--- a/samples/bpf/xdp_redirect_user.c
+++ b/samples/bpf/xdp_redirect_user.c
@@ -22,21 +22,48 @@
#include <libgen.h>
#include <sys/resource.h>
-#include "bpf_load.h"
#include "bpf_util.h"
#include <bpf/bpf.h>
+#include "bpf/libbpf.h"
static int ifindex_in;
static int ifindex_out;
static bool ifindex_out_xdp_dummy_attached = true;
+static __u32 prog_id;
+static __u32 dummy_prog_id;
-static __u32 xdp_flags;
+static __u32 xdp_flags = XDP_FLAGS_UPDATE_IF_NOEXIST;
+static int rxcnt_map_fd;
static void int_exit(int sig)
{
- bpf_set_link_xdp_fd(ifindex_in, -1, xdp_flags);
- if (ifindex_out_xdp_dummy_attached)
- bpf_set_link_xdp_fd(ifindex_out, -1, xdp_flags);
+ __u32 curr_prog_id = 0;
+
+ if (bpf_get_link_xdp_id(ifindex_in, &curr_prog_id, xdp_flags)) {
+ printf("bpf_get_link_xdp_id failed\n");
+ exit(1);
+ }
+ if (prog_id == curr_prog_id)
+ bpf_set_link_xdp_fd(ifindex_in, -1, xdp_flags);
+ else if (!curr_prog_id)
+ printf("couldn't find a prog id on iface IN\n");
+ else
+ printf("program on iface IN changed, not removing\n");
+
+ if (ifindex_out_xdp_dummy_attached) {
+ curr_prog_id = 0;
+ if (bpf_get_link_xdp_id(ifindex_out, &curr_prog_id,
+ xdp_flags)) {
+ printf("bpf_get_link_xdp_id failed\n");
+ exit(1);
+ }
+ if (prog_id == curr_prog_id)
+ bpf_set_link_xdp_fd(ifindex_out, -1, xdp_flags);
+ else if (!curr_prog_id)
+ printf("couldn't find a prog id on iface OUT\n");
+ else
+ printf("program on iface OUT changed, not removing\n");
+ }
exit(0);
}
@@ -53,7 +80,7 @@ static void poll_stats(int interval, int ifindex)
int i;
sleep(interval);
- assert(bpf_map_lookup_elem(map_fd[1], &key, values) == 0);
+ assert(bpf_map_lookup_elem(rxcnt_map_fd, &key, values) == 0);
for (i = 0; i < nr_cpus; i++)
sum += (values[i] - prev[i]);
if (sum)
@@ -69,7 +96,8 @@ static void usage(const char *prog)
"usage: %s [OPTS] IFINDEX_IN IFINDEX_OUT\n\n"
"OPTS:\n"
" -S use skb-mode\n"
- " -N enforce native mode\n",
+ " -N enforce native mode\n"
+ " -F force loading prog\n",
prog);
}
@@ -77,9 +105,18 @@ static void usage(const char *prog)
int main(int argc, char **argv)
{
struct rlimit r = {RLIM_INFINITY, RLIM_INFINITY};
- const char *optstr = "SN";
+ struct bpf_prog_load_attr prog_load_attr = {
+ .prog_type = BPF_PROG_TYPE_XDP,
+ };
+ struct bpf_program *prog, *dummy_prog;
+ int prog_fd, tx_port_map_fd, opt;
+ struct bpf_prog_info info = {};
+ __u32 info_len = sizeof(info);
+ const char *optstr = "FSN";
+ struct bpf_object *obj;
char filename[256];
- int ret, opt, key = 0;
+ int dummy_prog_fd;
+ int ret, key = 0;
while ((opt = getopt(argc, argv, optstr)) != -1) {
switch (opt) {
@@ -89,6 +126,9 @@ int main(int argc, char **argv)
case 'N':
xdp_flags |= XDP_FLAGS_DRV_MODE;
break;
+ case 'F':
+ xdp_flags &= ~XDP_FLAGS_UPDATE_IF_NOEXIST;
+ break;
default:
usage(basename(argv[0]));
return 1;
@@ -110,34 +150,65 @@ int main(int argc, char **argv)
printf("input: %d output: %d\n", ifindex_in, ifindex_out);
snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]);
+ prog_load_attr.file = filename;
+
+ if (bpf_prog_load_xattr(&prog_load_attr, &obj, &prog_fd))
+ return 1;
- if (load_bpf_file(filename)) {
- printf("%s", bpf_log_buf);
+ prog = bpf_program__next(NULL, obj);
+ dummy_prog = bpf_program__next(prog, obj);
+ if (!prog || !dummy_prog) {
+ printf("finding a prog in obj file failed\n");
+ return 1;
+ }
+ /* bpf_prog_load_xattr gives us the pointer to first prog's fd,
+ * so we're missing only the fd for dummy prog
+ */
+ dummy_prog_fd = bpf_program__fd(dummy_prog);
+ if (prog_fd < 0 || dummy_prog_fd < 0) {
+ printf("bpf_prog_load_xattr: %s\n", strerror(errno));
return 1;
}
- if (!prog_fd[0]) {
- printf("load_bpf_file: %s\n", strerror(errno));
+ tx_port_map_fd = bpf_object__find_map_fd_by_name(obj, "tx_port");
+ rxcnt_map_fd = bpf_object__find_map_fd_by_name(obj, "rxcnt");
+ if (tx_port_map_fd < 0 || rxcnt_map_fd < 0) {
+ printf("bpf_object__find_map_fd_by_name failed\n");
return 1;
}
- if (bpf_set_link_xdp_fd(ifindex_in, prog_fd[0], xdp_flags) < 0) {
+ if (bpf_set_link_xdp_fd(ifindex_in, prog_fd, xdp_flags) < 0) {
printf("ERROR: link set xdp fd failed on %d\n", ifindex_in);
return 1;
}
+ ret = bpf_obj_get_info_by_fd(prog_fd, &info, &info_len);
+ if (ret) {
+ printf("can't get prog info - %s\n", strerror(errno));
+ return ret;
+ }
+ prog_id = info.id;
+
/* Loading dummy XDP prog on out-device */
- if (bpf_set_link_xdp_fd(ifindex_out, prog_fd[1],
+ if (bpf_set_link_xdp_fd(ifindex_out, dummy_prog_fd,
(xdp_flags | XDP_FLAGS_UPDATE_IF_NOEXIST)) < 0) {
printf("WARN: link set xdp fd failed on %d\n", ifindex_out);
ifindex_out_xdp_dummy_attached = false;
}
+ memset(&info, 0, sizeof(info));
+ ret = bpf_obj_get_info_by_fd(prog_fd, &info, &info_len);
+ if (ret) {
+ printf("can't get prog info - %s\n", strerror(errno));
+ return ret;
+ }
+ dummy_prog_id = info.id;
+
signal(SIGINT, int_exit);
signal(SIGTERM, int_exit);
/* bpf redirect port */
- ret = bpf_map_update_elem(map_fd[0], &key, &ifindex_out, 0);
+ ret = bpf_map_update_elem(tx_port_map_fd, &key, &ifindex_out, 0);
if (ret) {
perror("bpf_update_elem");
goto out;
diff --git a/samples/bpf/xdp_router_ipv4_user.c b/samples/bpf/xdp_router_ipv4_user.c
index b2b4dfa776c8..79fe7bc26ab4 100644
--- a/samples/bpf/xdp_router_ipv4_user.c
+++ b/samples/bpf/xdp_router_ipv4_user.c
@@ -15,7 +15,6 @@
#include <string.h>
#include <sys/socket.h>
#include <unistd.h>
-#include "bpf_load.h"
#include <bpf/bpf.h>
#include <arpa/inet.h>
#include <fcntl.h>
@@ -25,32 +24,52 @@
#include <sys/ioctl.h>
#include <sys/syscall.h>
#include "bpf_util.h"
+#include "bpf/libbpf.h"
+#include <sys/resource.h>
+#include <libgen.h>
-int sock, sock_arp, flags = 0;
+int sock, sock_arp, flags = XDP_FLAGS_UPDATE_IF_NOEXIST;
static int total_ifindex;
-int *ifindex_list;
+static int *ifindex_list;
+static __u32 *prog_id_list;
char buf[8192];
+static int lpm_map_fd;
+static int rxcnt_map_fd;
+static int arp_table_map_fd;
+static int exact_match_map_fd;
+static int tx_port_map_fd;
static int get_route_table(int rtm_family);
static void int_exit(int sig)
{
+ __u32 prog_id = 0;
int i = 0;
- for (i = 0; i < total_ifindex; i++)
- bpf_set_link_xdp_fd(ifindex_list[i], -1, flags);
+ for (i = 0; i < total_ifindex; i++) {
+ if (bpf_get_link_xdp_id(ifindex_list[i], &prog_id, flags)) {
+ printf("bpf_get_link_xdp_id on iface %d failed\n",
+ ifindex_list[i]);
+ exit(1);
+ }
+ if (prog_id_list[i] == prog_id)
+ bpf_set_link_xdp_fd(ifindex_list[i], -1, flags);
+ else if (!prog_id)
+ printf("couldn't find a prog id on iface %d\n",
+ ifindex_list[i]);
+ else
+ printf("program on iface %d changed, not removing\n",
+ ifindex_list[i]);
+ prog_id = 0;
+ }
exit(0);
}
static void close_and_exit(int sig)
{
- int i = 0;
-
close(sock);
close(sock_arp);
- for (i = 0; i < total_ifindex; i++)
- bpf_set_link_xdp_fd(ifindex_list[i], -1, flags);
- exit(0);
+ int_exit(0);
}
/* Get the mac address of the interface given interface name */
@@ -179,14 +198,10 @@ static void read_route(struct nlmsghdr *nh, int nll)
route.iface_name = alloca(sizeof(char *) * IFNAMSIZ);
route.iface_name = if_indextoname(route.iface, route.iface_name);
route.mac = getmac(route.iface_name);
- if (route.mac == -1) {
- int i = 0;
-
- for (i = 0; i < total_ifindex; i++)
- bpf_set_link_xdp_fd(ifindex_list[i], -1, flags);
- exit(0);
- }
- assert(bpf_map_update_elem(map_fd[4], &route.iface, &route.iface, 0) == 0);
+ if (route.mac == -1)
+ int_exit(0);
+ assert(bpf_map_update_elem(tx_port_map_fd,
+ &route.iface, &route.iface, 0) == 0);
if (rtm_family == AF_INET) {
struct trie_value {
__u8 prefix[4];
@@ -207,11 +222,16 @@ static void read_route(struct nlmsghdr *nh, int nll)
direct_entry.arp.dst = 0;
if (route.dst_len == 32) {
if (nh->nlmsg_type == RTM_DELROUTE) {
- assert(bpf_map_delete_elem(map_fd[3], &route.dst) == 0);
+ assert(bpf_map_delete_elem(exact_match_map_fd,
+ &route.dst) == 0);
} else {
- if (bpf_map_lookup_elem(map_fd[2], &route.dst, &direct_entry.arp.mac) == 0)
+ if (bpf_map_lookup_elem(arp_table_map_fd,
+ &route.dst,
+ &direct_entry.arp.mac) == 0)
direct_entry.arp.dst = route.dst;
- assert(bpf_map_update_elem(map_fd[3], &route.dst, &direct_entry, 0) == 0);
+ assert(bpf_map_update_elem(exact_match_map_fd,
+ &route.dst,
+ &direct_entry, 0) == 0);
}
}
for (i = 0; i < 4; i++)
@@ -225,7 +245,7 @@ static void read_route(struct nlmsghdr *nh, int nll)
route.gw, route.dst_len,
route.metric,
route.iface_name);
- if (bpf_map_lookup_elem(map_fd[0], prefix_key,
+ if (bpf_map_lookup_elem(lpm_map_fd, prefix_key,
prefix_value) < 0) {
for (i = 0; i < 4; i++)
prefix_value->prefix[i] = prefix_key->data[i];
@@ -234,7 +254,7 @@ static void read_route(struct nlmsghdr *nh, int nll)
prefix_value->gw = route.gw;
prefix_value->metric = route.metric;
- assert(bpf_map_update_elem(map_fd[0],
+ assert(bpf_map_update_elem(lpm_map_fd,
prefix_key,
prefix_value, 0
) == 0);
@@ -247,7 +267,7 @@ static void read_route(struct nlmsghdr *nh, int nll)
prefix_key->data[2],
prefix_key->data[3],
prefix_key->prefixlen);
- assert(bpf_map_delete_elem(map_fd[0],
+ assert(bpf_map_delete_elem(lpm_map_fd,
prefix_key
) == 0);
/* Rereading the route table to check if
@@ -275,8 +295,7 @@ static void read_route(struct nlmsghdr *nh, int nll)
prefix_value->ifindex = route.iface;
prefix_value->gw = route.gw;
prefix_value->metric = route.metric;
- assert(bpf_map_update_elem(
- map_fd[0],
+ assert(bpf_map_update_elem(lpm_map_fd,
prefix_key,
prefix_value,
0) == 0);
@@ -401,7 +420,8 @@ static void read_arp(struct nlmsghdr *nh, int nll)
arp_entry.mac = atol(mac);
printf("%x\t\t%llx\n", arp_entry.dst, arp_entry.mac);
if (ndm_family == AF_INET) {
- if (bpf_map_lookup_elem(map_fd[3], &arp_entry.dst,
+ if (bpf_map_lookup_elem(exact_match_map_fd,
+ &arp_entry.dst,
&direct_entry) == 0) {
if (nh->nlmsg_type == RTM_DELNEIGH) {
direct_entry.arp.dst = 0;
@@ -410,16 +430,17 @@ static void read_arp(struct nlmsghdr *nh, int nll)
direct_entry.arp.dst = arp_entry.dst;
direct_entry.arp.mac = arp_entry.mac;
}
- assert(bpf_map_update_elem(map_fd[3],
+ assert(bpf_map_update_elem(exact_match_map_fd,
&arp_entry.dst,
&direct_entry, 0
) == 0);
memset(&direct_entry, 0, sizeof(direct_entry));
}
if (nh->nlmsg_type == RTM_DELNEIGH) {
- assert(bpf_map_delete_elem(map_fd[2], &arp_entry.dst) == 0);
+ assert(bpf_map_delete_elem(arp_table_map_fd,
+ &arp_entry.dst) == 0);
} else if (nh->nlmsg_type == RTM_NEWNEIGH) {
- assert(bpf_map_update_elem(map_fd[2],
+ assert(bpf_map_update_elem(arp_table_map_fd,
&arp_entry.dst,
&arp_entry.mac, 0
) == 0);
@@ -553,7 +574,8 @@ static int monitor_route(void)
for (key = 0; key < nr_keys; key++) {
__u64 sum = 0;
- assert(bpf_map_lookup_elem(map_fd[1], &key, values) == 0);
+ assert(bpf_map_lookup_elem(rxcnt_map_fd,
+ &key, values) == 0);
for (i = 0; i < nr_cpus; i++)
sum += (values[i] - prev[key][i]);
if (sum)
@@ -594,36 +616,87 @@ cleanup:
return ret;
}
+static void usage(const char *prog)
+{
+ fprintf(stderr,
+ "%s: %s [OPTS] interface name list\n\n"
+ "OPTS:\n"
+ " -S use skb-mode\n"
+ " -F force loading prog\n",
+ __func__, prog);
+}
+
int main(int ac, char **argv)
{
+ struct rlimit r = {RLIM_INFINITY, RLIM_INFINITY};
+ struct bpf_prog_load_attr prog_load_attr = {
+ .prog_type = BPF_PROG_TYPE_XDP,
+ };
+ struct bpf_prog_info info = {};
+ __u32 info_len = sizeof(info);
+ const char *optstr = "SF";
+ struct bpf_object *obj;
char filename[256];
char **ifname_list;
- int i = 1;
+ int prog_fd, opt;
+ int err, i = 1;
snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]);
- if (ac < 2) {
- printf("usage: %s [-S] Interface name list\n", argv[0]);
- return 1;
+ prog_load_attr.file = filename;
+
+ total_ifindex = ac - 1;
+ ifname_list = (argv + 1);
+
+ while ((opt = getopt(ac, argv, optstr)) != -1) {
+ switch (opt) {
+ case 'S':
+ flags |= XDP_FLAGS_SKB_MODE;
+ total_ifindex--;
+ ifname_list++;
+ break;
+ case 'F':
+ flags &= ~XDP_FLAGS_UPDATE_IF_NOEXIST;
+ total_ifindex--;
+ ifname_list++;
+ break;
+ default:
+ usage(basename(argv[0]));
+ return 1;
+ }
}
- if (!strcmp(argv[1], "-S")) {
- flags = XDP_FLAGS_SKB_MODE;
- total_ifindex = ac - 2;
- ifname_list = (argv + 2);
- } else {
- flags = 0;
- total_ifindex = ac - 1;
- ifname_list = (argv + 1);
+
+ if (optind == ac) {
+ usage(basename(argv[0]));
+ return 1;
}
- if (load_bpf_file(filename)) {
- printf("%s", bpf_log_buf);
+
+ if (setrlimit(RLIMIT_MEMLOCK, &r)) {
+ perror("setrlimit(RLIMIT_MEMLOCK)");
return 1;
}
+
+ if (bpf_prog_load_xattr(&prog_load_attr, &obj, &prog_fd))
+ return 1;
+
printf("\n**************loading bpf file*********************\n\n\n");
- if (!prog_fd[0]) {
- printf("load_bpf_file: %s\n", strerror(errno));
+ if (!prog_fd) {
+ printf("bpf_prog_load_xattr: %s\n", strerror(errno));
return 1;
}
- ifindex_list = (int *)malloc(total_ifindex * sizeof(int *));
+
+ lpm_map_fd = bpf_object__find_map_fd_by_name(obj, "lpm_map");
+ rxcnt_map_fd = bpf_object__find_map_fd_by_name(obj, "rxcnt");
+ arp_table_map_fd = bpf_object__find_map_fd_by_name(obj, "arp_table");
+ exact_match_map_fd = bpf_object__find_map_fd_by_name(obj,
+ "exact_match");
+ tx_port_map_fd = bpf_object__find_map_fd_by_name(obj, "tx_port");
+ if (lpm_map_fd < 0 || rxcnt_map_fd < 0 || arp_table_map_fd < 0 ||
+ exact_match_map_fd < 0 || tx_port_map_fd < 0) {
+ printf("bpf_object__find_map_fd_by_name failed\n");
+ return 1;
+ }
+
+ ifindex_list = (int *)calloc(total_ifindex, sizeof(int *));
for (i = 0; i < total_ifindex; i++) {
ifindex_list[i] = if_nametoindex(ifname_list[i]);
if (!ifindex_list[i]) {
@@ -632,8 +705,9 @@ int main(int ac, char **argv)
return 1;
}
}
+ prog_id_list = (__u32 *)calloc(total_ifindex, sizeof(__u32 *));
for (i = 0; i < total_ifindex; i++) {
- if (bpf_set_link_xdp_fd(ifindex_list[i], prog_fd[0], flags) < 0) {
+ if (bpf_set_link_xdp_fd(ifindex_list[i], prog_fd, flags) < 0) {
printf("link set xdp fd failed\n");
int recovery_index = i;
@@ -642,6 +716,13 @@ int main(int ac, char **argv)
return 1;
}
+ err = bpf_obj_get_info_by_fd(prog_fd, &info, &info_len);
+ if (err) {
+ printf("can't get prog info - %s\n", strerror(errno));
+ return err;
+ }
+ prog_id_list[i] = info.id;
+ memset(&info, 0, sizeof(info));
printf("Attached to %d\n", ifindex_list[i]);
}
signal(SIGINT, int_exit);
diff --git a/samples/bpf/xdp_rxq_info_user.c b/samples/bpf/xdp_rxq_info_user.c
index ef26f882f92f..1210f3b170f0 100644
--- a/samples/bpf/xdp_rxq_info_user.c
+++ b/samples/bpf/xdp_rxq_info_user.c
@@ -29,8 +29,9 @@ static const char *__doc__ = " XDP RX-queue info extract example\n\n"
static int ifindex = -1;
static char ifname_buf[IF_NAMESIZE];
static char *ifname;
+static __u32 prog_id;
-static __u32 xdp_flags;
+static __u32 xdp_flags = XDP_FLAGS_UPDATE_IF_NOEXIST;
static struct bpf_map *stats_global_map;
static struct bpf_map *rx_queue_index_map;
@@ -52,16 +53,30 @@ static const struct option long_options[] = {
{"action", required_argument, NULL, 'a' },
{"readmem", no_argument, NULL, 'r' },
{"swapmac", no_argument, NULL, 'm' },
+ {"force", no_argument, NULL, 'F' },
{0, 0, NULL, 0 }
};
static void int_exit(int sig)
{
- fprintf(stderr,
- "Interrupted: Removing XDP program on ifindex:%d device:%s\n",
- ifindex, ifname);
- if (ifindex > -1)
- bpf_set_link_xdp_fd(ifindex, -1, xdp_flags);
+ __u32 curr_prog_id = 0;
+
+ if (ifindex > -1) {
+ if (bpf_get_link_xdp_id(ifindex, &curr_prog_id, xdp_flags)) {
+ printf("bpf_get_link_xdp_id failed\n");
+ exit(EXIT_FAIL);
+ }
+ if (prog_id == curr_prog_id) {
+ fprintf(stderr,
+ "Interrupted: Removing XDP program on ifindex:%d device:%s\n",
+ ifindex, ifname);
+ bpf_set_link_xdp_fd(ifindex, -1, xdp_flags);
+ } else if (!curr_prog_id) {
+ printf("couldn't find a prog id on a given iface\n");
+ } else {
+ printf("program on interface changed, not removing\n");
+ }
+ }
exit(EXIT_OK);
}
@@ -446,6 +461,8 @@ int main(int argc, char **argv)
struct bpf_prog_load_attr prog_load_attr = {
.prog_type = BPF_PROG_TYPE_XDP,
};
+ struct bpf_prog_info info = {};
+ __u32 info_len = sizeof(info);
int prog_fd, map_fd, opt, err;
bool use_separators = true;
struct config cfg = { 0 };
@@ -487,7 +504,7 @@ int main(int argc, char **argv)
}
/* Parse commands line args */
- while ((opt = getopt_long(argc, argv, "hSd:",
+ while ((opt = getopt_long(argc, argv, "FhSrmzd:s:a:",
long_options, &longindex)) != -1) {
switch (opt) {
case 'd':
@@ -524,6 +541,9 @@ int main(int argc, char **argv)
case 'm':
cfg_options |= SWAP_MAC;
break;
+ case 'F':
+ xdp_flags &= ~XDP_FLAGS_UPDATE_IF_NOEXIST;
+ break;
case 'h':
error:
default:
@@ -576,6 +596,13 @@ int main(int argc, char **argv)
return EXIT_FAIL_XDP;
}
+ err = bpf_obj_get_info_by_fd(prog_fd, &info, &info_len);
+ if (err) {
+ printf("can't get prog info - %s\n", strerror(errno));
+ return err;
+ }
+ prog_id = info.id;
+
stats_poll(interval, action, cfg_options);
return EXIT_OK;
}
diff --git a/samples/bpf/xdp_sample_pkts_user.c b/samples/bpf/xdp_sample_pkts_user.c
index 8dd87c1eb560..dc66345a929a 100644
--- a/samples/bpf/xdp_sample_pkts_user.c
+++ b/samples/bpf/xdp_sample_pkts_user.c
@@ -12,6 +12,9 @@
#include <signal.h>
#include <libbpf.h>
#include <bpf/bpf.h>
+#include <sys/resource.h>
+#include <libgen.h>
+#include <linux/if_link.h>
#include "perf-sys.h"
#include "trace_helpers.h"
@@ -20,25 +23,50 @@
static int pmu_fds[MAX_CPUS], if_idx;
static struct perf_event_mmap_page *headers[MAX_CPUS];
static char *if_name;
+static __u32 xdp_flags = XDP_FLAGS_UPDATE_IF_NOEXIST;
+static __u32 prog_id;
static int do_attach(int idx, int fd, const char *name)
{
+ struct bpf_prog_info info = {};
+ __u32 info_len = sizeof(info);
int err;
- err = bpf_set_link_xdp_fd(idx, fd, 0);
- if (err < 0)
+ err = bpf_set_link_xdp_fd(idx, fd, xdp_flags);
+ if (err < 0) {
printf("ERROR: failed to attach program to %s\n", name);
+ return err;
+ }
+
+ err = bpf_obj_get_info_by_fd(fd, &info, &info_len);
+ if (err) {
+ printf("can't get prog info - %s\n", strerror(errno));
+ return err;
+ }
+ prog_id = info.id;
return err;
}
static int do_detach(int idx, const char *name)
{
- int err;
+ __u32 curr_prog_id = 0;
+ int err = 0;
- err = bpf_set_link_xdp_fd(idx, -1, 0);
- if (err < 0)
- printf("ERROR: failed to detach program from %s\n", name);
+ err = bpf_get_link_xdp_id(idx, &curr_prog_id, 0);
+ if (err) {
+ printf("bpf_get_link_xdp_id failed\n");
+ return err;
+ }
+ if (prog_id == curr_prog_id) {
+ err = bpf_set_link_xdp_fd(idx, -1, 0);
+ if (err < 0)
+ printf("ERROR: failed to detach prog from %s\n", name);
+ } else if (!curr_prog_id) {
+ printf("couldn't find a prog id on a %s\n", name);
+ } else {
+ printf("program on interface changed, not removing\n");
+ }
return err;
}
@@ -97,20 +125,47 @@ static void sig_handler(int signo)
exit(0);
}
+static void usage(const char *prog)
+{
+ fprintf(stderr,
+ "%s: %s [OPTS] <ifname|ifindex>\n\n"
+ "OPTS:\n"
+ " -F force loading prog\n",
+ __func__, prog);
+}
+
int main(int argc, char **argv)
{
+ struct rlimit r = {RLIM_INFINITY, RLIM_INFINITY};
struct bpf_prog_load_attr prog_load_attr = {
.prog_type = BPF_PROG_TYPE_XDP,
};
+ const char *optstr = "F";
+ int prog_fd, map_fd, opt;
struct bpf_object *obj;
struct bpf_map *map;
- int prog_fd, map_fd;
char filename[256];
int ret, err, i;
int numcpus;
- if (argc < 2) {
- printf("Usage: %s <ifname>\n", argv[0]);
+ while ((opt = getopt(argc, argv, optstr)) != -1) {
+ switch (opt) {
+ case 'F':
+ xdp_flags &= ~XDP_FLAGS_UPDATE_IF_NOEXIST;
+ break;
+ default:
+ usage(basename(argv[0]));
+ return 1;
+ }
+ }
+
+ if (optind == argc) {
+ usage(basename(argv[0]));
+ return 1;
+ }
+
+ if (setrlimit(RLIMIT_MEMLOCK, &r)) {
+ perror("setrlimit(RLIMIT_MEMLOCK)");
return 1;
}
@@ -136,16 +191,16 @@ int main(int argc, char **argv)
}
map_fd = bpf_map__fd(map);
- if_idx = if_nametoindex(argv[1]);
+ if_idx = if_nametoindex(argv[optind]);
if (!if_idx)
- if_idx = strtoul(argv[1], NULL, 0);
+ if_idx = strtoul(argv[optind], NULL, 0);
if (!if_idx) {
fprintf(stderr, "Invalid ifname\n");
return 1;
}
- if_name = argv[1];
- err = do_attach(if_idx, prog_fd, argv[1]);
+ if_name = argv[optind];
+ err = do_attach(if_idx, prog_fd, if_name);
if (err)
return err;
diff --git a/samples/bpf/xdp_tx_iptunnel_user.c b/samples/bpf/xdp_tx_iptunnel_user.c
index a4ccc33adac0..4a1511eb7812 100644
--- a/samples/bpf/xdp_tx_iptunnel_user.c
+++ b/samples/bpf/xdp_tx_iptunnel_user.c
@@ -17,7 +17,7 @@
#include <netinet/ether.h>
#include <unistd.h>
#include <time.h>
-#include "bpf_load.h"
+#include "bpf/libbpf.h"
#include <bpf/bpf.h>
#include "bpf_util.h"
#include "xdp_tx_iptunnel_common.h"
@@ -25,12 +25,26 @@
#define STATS_INTERVAL_S 2U
static int ifindex = -1;
-static __u32 xdp_flags = 0;
+static __u32 xdp_flags = XDP_FLAGS_UPDATE_IF_NOEXIST;
+static int rxcnt_map_fd;
+static __u32 prog_id;
static void int_exit(int sig)
{
- if (ifindex > -1)
- bpf_set_link_xdp_fd(ifindex, -1, xdp_flags);
+ __u32 curr_prog_id = 0;
+
+ if (ifindex > -1) {
+ if (bpf_get_link_xdp_id(ifindex, &curr_prog_id, xdp_flags)) {
+ printf("bpf_get_link_xdp_id failed\n");
+ exit(1);
+ }
+ if (prog_id == curr_prog_id)
+ bpf_set_link_xdp_fd(ifindex, -1, xdp_flags);
+ else if (!curr_prog_id)
+ printf("couldn't find a prog id on a given iface\n");
+ else
+ printf("program on interface changed, not removing\n");
+ }
exit(0);
}
@@ -53,7 +67,8 @@ static void poll_stats(unsigned int kill_after_s)
for (proto = 0; proto < nr_protos; proto++) {
__u64 sum = 0;
- assert(bpf_map_lookup_elem(map_fd[0], &proto, values) == 0);
+ assert(bpf_map_lookup_elem(rxcnt_map_fd, &proto,
+ values) == 0);
for (i = 0; i < nr_cpus; i++)
sum += (values[i] - prev[proto][i]);
@@ -81,6 +96,7 @@ static void usage(const char *cmd)
printf(" -P <IP-Protocol> Default is TCP\n");
printf(" -S use skb-mode\n");
printf(" -N enforce native mode\n");
+ printf(" -F Force loading the XDP prog\n");
printf(" -h Display this help\n");
}
@@ -138,16 +154,22 @@ static int parse_ports(const char *port_str, int *min_port, int *max_port)
int main(int argc, char **argv)
{
+ struct bpf_prog_load_attr prog_load_attr = {
+ .prog_type = BPF_PROG_TYPE_XDP,
+ };
+ struct rlimit r = {RLIM_INFINITY, RLIM_INFINITY};
+ int min_port = 0, max_port = 0, vip2tnl_map_fd;
+ const char *optstr = "i:a:p:s:d:m:T:P:FSNh";
unsigned char opt_flags[256] = {};
+ struct bpf_prog_info info = {};
+ __u32 info_len = sizeof(info);
unsigned int kill_after_s = 0;
- const char *optstr = "i:a:p:s:d:m:T:P:SNh";
- int min_port = 0, max_port = 0;
struct iptnl_info tnl = {};
- struct rlimit r = {RLIM_INFINITY, RLIM_INFINITY};
+ struct bpf_object *obj;
struct vip vip = {};
char filename[256];
- int opt;
- int i;
+ int opt, prog_fd;
+ int i, err;
tnl.family = AF_UNSPEC;
vip.protocol = IPPROTO_TCP;
@@ -211,6 +233,9 @@ int main(int argc, char **argv)
case 'N':
xdp_flags |= XDP_FLAGS_DRV_MODE;
break;
+ case 'F':
+ xdp_flags &= ~XDP_FLAGS_UPDATE_IF_NOEXIST;
+ break;
default:
usage(argv[0]);
return 1;
@@ -232,33 +257,47 @@ int main(int argc, char **argv)
}
snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]);
+ prog_load_attr.file = filename;
- if (load_bpf_file(filename)) {
- printf("%s", bpf_log_buf);
+ if (bpf_prog_load_xattr(&prog_load_attr, &obj, &prog_fd))
return 1;
- }
- if (!prog_fd[0]) {
+ if (!prog_fd) {
printf("load_bpf_file: %s\n", strerror(errno));
return 1;
}
+ rxcnt_map_fd = bpf_object__find_map_fd_by_name(obj, "rxcnt");
+ vip2tnl_map_fd = bpf_object__find_map_fd_by_name(obj, "vip2tnl");
+ if (vip2tnl_map_fd < 0 || rxcnt_map_fd < 0) {
+ printf("bpf_object__find_map_fd_by_name failed\n");
+ return 1;
+ }
+
signal(SIGINT, int_exit);
signal(SIGTERM, int_exit);
while (min_port <= max_port) {
vip.dport = htons(min_port++);
- if (bpf_map_update_elem(map_fd[1], &vip, &tnl, BPF_NOEXIST)) {
+ if (bpf_map_update_elem(vip2tnl_map_fd, &vip, &tnl,
+ BPF_NOEXIST)) {
perror("bpf_map_update_elem(&vip2tnl)");
return 1;
}
}
- if (bpf_set_link_xdp_fd(ifindex, prog_fd[0], xdp_flags) < 0) {
+ if (bpf_set_link_xdp_fd(ifindex, prog_fd, xdp_flags) < 0) {
printf("link set xdp fd failed\n");
return 1;
}
+ err = bpf_obj_get_info_by_fd(prog_fd, &info, &info_len);
+ if (err) {
+ printf("can't get prog info - %s\n", strerror(errno));
+ return err;
+ }
+ prog_id = info.id;
+
poll_stats(kill_after_s);
bpf_set_link_xdp_fd(ifindex, -1, xdp_flags);
diff --git a/samples/bpf/xdpsock_user.c b/samples/bpf/xdpsock_user.c
index 57ecadc58403..f73055e0191f 100644
--- a/samples/bpf/xdpsock_user.c
+++ b/samples/bpf/xdpsock_user.c
@@ -68,7 +68,7 @@ enum benchmark_type {
};
static enum benchmark_type opt_bench = BENCH_RXDROP;
-static u32 opt_xdp_flags;
+static u32 opt_xdp_flags = XDP_FLAGS_UPDATE_IF_NOEXIST;
static const char *opt_if = "";
static int opt_ifindex;
static int opt_queue;
@@ -76,6 +76,7 @@ static int opt_poll;
static int opt_shared_packet_buffer;
static int opt_interval = 1;
static u32 opt_xdp_bind_flags;
+static __u32 prog_id;
struct xdp_umem_uqueue {
u32 cached_prod;
@@ -631,9 +632,20 @@ static void *poller(void *arg)
static void int_exit(int sig)
{
+ __u32 curr_prog_id = 0;
+
(void)sig;
dump_stats();
- bpf_set_link_xdp_fd(opt_ifindex, -1, opt_xdp_flags);
+ if (bpf_get_link_xdp_id(opt_ifindex, &curr_prog_id, opt_xdp_flags)) {
+ printf("bpf_get_link_xdp_id failed\n");
+ exit(EXIT_FAILURE);
+ }
+ if (prog_id == curr_prog_id)
+ bpf_set_link_xdp_fd(opt_ifindex, -1, opt_xdp_flags);
+ else if (!curr_prog_id)
+ printf("couldn't find a prog id on a given interface\n");
+ else
+ printf("program on interface changed, not removing\n");
exit(EXIT_SUCCESS);
}
@@ -682,7 +694,7 @@ static void parse_command_line(int argc, char **argv)
opterr = 0;
for (;;) {
- c = getopt_long(argc, argv, "rtli:q:psSNn:cz", long_options,
+ c = getopt_long(argc, argv, "Frtli:q:psSNn:cz", long_options,
&option_index);
if (c == -1)
break;
@@ -725,6 +737,9 @@ static void parse_command_line(int argc, char **argv)
case 'c':
opt_xdp_bind_flags |= XDP_COPY;
break;
+ case 'F':
+ opt_xdp_flags &= ~XDP_FLAGS_UPDATE_IF_NOEXIST;
+ break;
default:
usage(basename(argv[0]));
}
@@ -904,6 +919,8 @@ int main(int argc, char **argv)
.prog_type = BPF_PROG_TYPE_XDP,
};
int prog_fd, qidconf_map, xsks_map;
+ struct bpf_prog_info info = {};
+ __u32 info_len = sizeof(info);
struct bpf_object *obj;
char xdp_filename[256];
struct bpf_map *map;
@@ -950,6 +967,13 @@ int main(int argc, char **argv)
exit(EXIT_FAILURE);
}
+ ret = bpf_obj_get_info_by_fd(prog_fd, &info, &info_len);
+ if (ret) {
+ printf("can't get prog info - %s\n", strerror(errno));
+ return 1;
+ }
+ prog_id = info.id;
+
ret = bpf_map_update_elem(qidconf_map, &key, &opt_queue, 0);
if (ret) {
fprintf(stderr, "ERROR: bpf_map_update_elem qidconf\n");
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.