samples/bpf: adapt samples/bpf to bpf_xdp_xxx() APIs

Use new bpf_xdp_*() APIs across all XDP-related BPF samples.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/r/20220120061422.2710637-5-andrii@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

samples/bpf/xdp1_user.c

@@ -26,12 +26,12 @@ static void int_exit(int sig)
 {
 	__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");
+	if (bpf_xdp_query_id(ifindex, xdp_flags, &curr_prog_id)) {
+		printf("bpf_xdp_query_id failed\n");
 		exit(1);
 	}
 	if (prog_id == curr_prog_id)
-		bpf_set_link_xdp_fd(ifindex, -1, xdp_flags);
+		bpf_xdp_detach(ifindex, xdp_flags, NULL);
 	else if (!curr_prog_id)
 		printf("couldn't find a prog id on a given interface\n");
 	else
@@ -143,7 +143,7 @@ int main(int argc, char **argv)
 	signal(SIGINT, int_exit);
 	signal(SIGTERM, int_exit);
 
-	if (bpf_set_link_xdp_fd(ifindex, prog_fd, xdp_flags) < 0) {
+	if (bpf_xdp_attach(ifindex, prog_fd, xdp_flags, NULL) < 0) {
 		printf("link set xdp fd failed\n");
 		return 1;
 	}

samples/bpf/xdp_adjust_tail_user.c

@@ -34,12 +34,12 @@ static void int_exit(int sig)
 	__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");
+		if (bpf_xdp_query_id(ifindex, xdp_flags, &curr_prog_id)) {
+			printf("bpf_xdp_query_id failed\n");
 			exit(1);
 		}
 		if (prog_id == curr_prog_id)
-			bpf_set_link_xdp_fd(ifindex, -1, xdp_flags);
+			bpf_xdp_detach(ifindex, xdp_flags, NULL);
 		else if (!curr_prog_id)
 			printf("couldn't find a prog id on a given iface\n");
 		else
@@ -173,7 +173,7 @@ int main(int argc, char **argv)
 	signal(SIGINT, int_exit);
 	signal(SIGTERM, int_exit);
 
-	if (bpf_set_link_xdp_fd(ifindex, prog_fd, xdp_flags) < 0) {
+	if (bpf_xdp_attach(ifindex, prog_fd, xdp_flags, NULL) < 0) {
 		printf("link set xdp fd failed\n");
 		return 1;
 	}

samples/bpf/xdp_fwd_user.c

@@ -33,7 +33,7 @@ static int do_attach(int idx, int prog_fd, int map_fd, const char *name)
 {
 	int err;
 
-	err = bpf_set_link_xdp_fd(idx, prog_fd, xdp_flags);
+	err = bpf_xdp_attach(idx, prog_fd, xdp_flags, NULL);
 	if (err < 0) {
 		printf("ERROR: failed to attach program to %s\n", name);
 		return err;
@@ -51,7 +51,7 @@ static int do_detach(int idx, const char *name)
 {
 	int err;
 
-	err = bpf_set_link_xdp_fd(idx, -1, xdp_flags);
+	err = bpf_xdp_detach(idx, xdp_flags, NULL);
 	if (err < 0)
 		printf("ERROR: failed to detach program from %s\n", name);
 

samples/bpf/xdp_router_ipv4_user.c

@@ -43,13 +43,13 @@ static void int_exit(int sig)
 	int i = 0;
 
 	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",
+		if (bpf_xdp_query_id(ifindex_list[i], flags, &prog_id)) {
+			printf("bpf_xdp_query_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);
+			bpf_xdp_detach(ifindex_list[i], flags, NULL);
 		else if (!prog_id)
 			printf("couldn't find a prog id on iface %d\n",
 			       ifindex_list[i]);
@@ -716,12 +716,12 @@ int main(int ac, char **argv)
 	}
 	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, flags) < 0) {
+		if (bpf_xdp_attach(ifindex_list[i], prog_fd, flags, NULL) < 0) {
 			printf("link set xdp fd failed\n");
 			int recovery_index = i;
 
 			for (i = 0; i < recovery_index; i++)
-				bpf_set_link_xdp_fd(ifindex_list[i], -1, flags);
+				bpf_xdp_detach(ifindex_list[i], flags, NULL);
 
 			return 1;
 		}

samples/bpf/xdp_rxq_info_user.c

@@ -62,15 +62,15 @@ static void int_exit(int sig)
 	__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");
+		if (bpf_xdp_query_id(ifindex, xdp_flags, &curr_prog_id)) {
+			printf("bpf_xdp_query_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);
+			bpf_xdp_detach(ifindex, xdp_flags, NULL);
 		} else if (!curr_prog_id) {
 			printf("couldn't find a prog id on a given iface\n");
 		} else {
@@ -582,7 +582,7 @@ int main(int argc, char **argv)
 	signal(SIGINT, int_exit);
 	signal(SIGTERM, int_exit);
 
-	if (bpf_set_link_xdp_fd(ifindex, prog_fd, xdp_flags) < 0) {
+	if (bpf_xdp_attach(ifindex, prog_fd, xdp_flags, NULL) < 0) {
 		fprintf(stderr, "link set xdp fd failed\n");
 		return EXIT_FAIL_XDP;
 	}

samples/bpf/xdp_sample_pkts_user.c

@@ -30,7 +30,7 @@ static int do_attach(int idx, int fd, const char *name)
 	__u32 info_len = sizeof(info);
 	int err;
 
-	err = bpf_set_link_xdp_fd(idx, fd, xdp_flags);
+	err = bpf_xdp_attach(idx, fd, xdp_flags, NULL);
 	if (err < 0) {
 		printf("ERROR: failed to attach program to %s\n", name);
 		return err;
@@ -51,13 +51,13 @@ static int do_detach(int idx, const char *name)
 	__u32 curr_prog_id = 0;
 	int err = 0;
 
-	err = bpf_get_link_xdp_id(idx, &curr_prog_id, xdp_flags);
+	err = bpf_xdp_query_id(idx, xdp_flags, &curr_prog_id);
 	if (err) {
-		printf("bpf_get_link_xdp_id failed\n");
+		printf("bpf_xdp_query_id failed\n");
 		return err;
 	}
 	if (prog_id == curr_prog_id) {
-		err = bpf_set_link_xdp_fd(idx, -1, xdp_flags);
+		err = bpf_xdp_detach(idx, xdp_flags, NULL);
 		if (err < 0)
 			printf("ERROR: failed to detach prog from %s\n", name);
 	} else if (!curr_prog_id) {

samples/bpf/xdp_sample_user.c

@@ -1265,7 +1265,7 @@ static int __sample_remove_xdp(int ifindex, __u32 prog_id, int xdp_flags)
 	int ret;
 
 	if (prog_id) {
-		ret = bpf_get_link_xdp_id(ifindex, &cur_prog_id, xdp_flags);
+		ret = bpf_xdp_query_id(ifindex, xdp_flags, &cur_prog_id);
 		if (ret < 0)
 			return -errno;
 
@@ -1278,7 +1278,7 @@ static int __sample_remove_xdp(int ifindex, __u32 prog_id, int xdp_flags)
 		}
 	}
 
-	return bpf_set_link_xdp_fd(ifindex, -1, xdp_flags);
+	return bpf_xdp_detach(ifindex, xdp_flags, NULL);
 }
 
 int sample_install_xdp(struct bpf_program *xdp_prog, int ifindex, bool generic,
@@ -1295,8 +1295,7 @@ int sample_install_xdp(struct bpf_program *xdp_prog, int ifindex, bool generic,
 
 	xdp_flags |= !force ? XDP_FLAGS_UPDATE_IF_NOEXIST : 0;
 	xdp_flags |= generic ? XDP_FLAGS_SKB_MODE : XDP_FLAGS_DRV_MODE;
-	ret = bpf_set_link_xdp_fd(ifindex, bpf_program__fd(xdp_prog),
-				  xdp_flags);
+	ret = bpf_xdp_attach(ifindex, bpf_program__fd(xdp_prog), xdp_flags, NULL);
 	if (ret < 0) {
 		ret = -errno;
 		fprintf(stderr,
@@ -1308,7 +1307,7 @@ int sample_install_xdp(struct bpf_program *xdp_prog, int ifindex, bool generic,
 		return ret;
 	}
 
-	ret = bpf_get_link_xdp_id(ifindex, &prog_id, xdp_flags);
+	ret = bpf_xdp_query_id(ifindex, xdp_flags, &prog_id);
 	if (ret < 0) {
 		ret = -errno;
 		fprintf(stderr,

samples/bpf/xdp_tx_iptunnel_user.c

@@ -32,12 +32,12 @@ static void int_exit(int sig)
 	__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");
+		if (bpf_xdp_query_id(ifindex, xdp_flags, &curr_prog_id)) {
+			printf("bpf_xdp_query_id failed\n");
 			exit(1);
 		}
 		if (prog_id == curr_prog_id)
-			bpf_set_link_xdp_fd(ifindex, -1, xdp_flags);
+			bpf_xdp_detach(ifindex, xdp_flags, NULL);
 		else if (!curr_prog_id)
 			printf("couldn't find a prog id on a given iface\n");
 		else
@@ -288,7 +288,7 @@ int main(int argc, char **argv)
 		}
 	}
 
-	if (bpf_set_link_xdp_fd(ifindex, prog_fd, xdp_flags) < 0) {
+	if (bpf_xdp_attach(ifindex, prog_fd, xdp_flags, NULL) < 0) {
 		printf("link set xdp fd failed\n");
 		return 1;
 	}
@@ -302,7 +302,7 @@ int main(int argc, char **argv)
 
 	poll_stats(kill_after_s);
 
-	bpf_set_link_xdp_fd(ifindex, -1, xdp_flags);
+	bpf_xdp_detach(ifindex, xdp_flags, NULL);
 
 	return 0;
 }

samples/bpf/xdpsock_ctrl_proc.c

@@ -173,7 +173,7 @@ main(int argc, char **argv)
 	unlink(SOCKET_NAME);
 
 	/* Unset fd for given ifindex */
-	err = bpf_set_link_xdp_fd(ifindex, -1, 0);
+	err = bpf_xdp_detach(ifindex, 0, NULL);
 	if (err) {
 		fprintf(stderr, "Error when unsetting bpf prog_fd for ifindex(%d)\n", ifindex);
 		return err;

samples/bpf/xdpsock_user.c

@@ -571,13 +571,13 @@ static void remove_xdp_program(void)
 {
 	u32 curr_prog_id = 0;
 
-	if (bpf_get_link_xdp_id(opt_ifindex, &curr_prog_id, opt_xdp_flags)) {
-		printf("bpf_get_link_xdp_id failed\n");
+	if (bpf_xdp_query_id(opt_ifindex, opt_xdp_flags, &curr_prog_id)) {
+		printf("bpf_xdp_query_id failed\n");
 		exit(EXIT_FAILURE);
 	}
 
 	if (prog_id == curr_prog_id)
-		bpf_set_link_xdp_fd(opt_ifindex, -1, opt_xdp_flags);
+		bpf_xdp_detach(opt_ifindex, opt_xdp_flags, NULL);
 	else if (!curr_prog_id)
 		printf("couldn't find a prog id on a given interface\n");
 	else
@@ -1027,7 +1027,7 @@ static struct xsk_socket_info *xsk_configure_socket(struct xsk_umem_info *umem,
 	if (ret)
 		exit_with_error(-ret);
 
-	ret = bpf_get_link_xdp_id(opt_ifindex, &prog_id, opt_xdp_flags);
+	ret = bpf_xdp_query_id(opt_ifindex, opt_xdp_flags, &prog_id);
 	if (ret)
 		exit_with_error(-ret);
 
@@ -1760,7 +1760,7 @@ static void load_xdp_program(char **argv, struct bpf_object **obj)
 		exit(EXIT_FAILURE);
 	}
 
-	if (bpf_set_link_xdp_fd(opt_ifindex, prog_fd, opt_xdp_flags) < 0) {
+	if (bpf_xdp_attach(opt_ifindex, prog_fd, opt_xdp_flags, NULL) < 0) {
 		fprintf(stderr, "ERROR: link set xdp fd failed\n");
 		exit(EXIT_FAILURE);
 	}

samples/bpf/xsk_fwd.c

@@ -974,8 +974,8 @@ static void remove_xdp_program(void)
 	int i;
 
 	for (i = 0 ; i < n_ports; i++)
-		bpf_set_link_xdp_fd(if_nametoindex(port_params[i].iface), -1,
-				    port_params[i].xsk_cfg.xdp_flags);
+		bpf_xdp_detach(if_nametoindex(port_params[i].iface),
+			       port_params[i].xsk_cfg.xdp_flags, NULL);
 }
 
 int main(int argc, char **argv)