Merge tag 'net-next-5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking updates from Jakub Kicinski:
 "The sprinkling of SPI drivers is because we added a new one and Mark
  sent us a SPI driver interface conversion pull request.

  Core
  ----

   - Introduce XDP multi-buffer support, allowing the use of XDP with
     jumbo frame MTUs and combination with Rx coalescing offloads (LRO).

   - Speed up netns dismantling (5x) and lower the memory cost a little.
     Remove unnecessary per-netns sockets. Scope some lists to a netns.
     Cut down RCU syncing. Use batch methods. Allow netdev registration
     to complete out of order.

   - Support distinguishing timestamp types (ingress vs egress) and
     maintaining them across packet scrubbing points (e.g. redirect).

   - Continue the work of annotating packet drop reasons throughout the
     stack.

   - Switch netdev error counters from an atomic to dynamically
     allocated per-CPU counters.

   - Rework a few preempt_disable(), local_irq_save() and busy waiting
     sections problematic on PREEMPT_RT.

   - Extend the ref_tracker to allow catching use-after-free bugs.

  BPF
  ---

   - Introduce "packing allocator" for BPF JIT images. JITed code is
     marked read only, and used to be allocated at page granularity.
     Custom allocator allows for more efficient memory use, lower iTLB
     pressure and prevents identity mapping huge pages from getting
     split.

   - Make use of BTF type annotations (e.g. __user, __percpu) to enforce
     the correct probe read access method, add appropriate helpers.

   - Convert the BPF preload to use light skeleton and drop the
     user-mode-driver dependency.

   - Allow XDP BPF_PROG_RUN test infra to send real packets, enabling
     its use as a packet generator.

   - Allow local storage memory to be allocated with GFP_KERNEL if
     called from a hook allowed to sleep.

   - Introduce fprobe (multi kprobe) to speed up mass attachment (arch
     bits to come later).

   - Add unstable conntrack lookup helpers for BPF by using the BPF
     kfunc infra.

   - Allow cgroup BPF progs to return custom errors to user space.

   - Add support for AF_UNIX iterator batching.

   - Allow iterator programs to use sleepable helpers.

   - Support JIT of add, and, or, xor and xchg atomic ops on arm64.

   - Add BTFGen support to bpftool which allows to use CO-RE in kernels
     without BTF info.

   - Large number of libbpf API improvements, cleanups and deprecations.

  Protocols
  ---------

   - Micro-optimize UDPv6 Tx, gaining up to 5% in test on dummy netdev.

   - Adjust TSO packet sizes based on min_rtt, allowing very low latency
     links (data centers) to always send full-sized TSO super-frames.

   - Make IPv6 flow label changes (AKA hash rethink) more configurable,
     via sysctl and setsockopt. Distinguish between server and client
     behavior.

   - VxLAN support to "collect metadata" devices to terminate only
     configured VNIs. This is similar to VLAN filtering in the bridge.

   - Support inserting IPv6 IOAM information to a fraction of frames.

   - Add protocol attribute to IP addresses to allow identifying where
     given address comes from (kernel-generated, DHCP etc.)

   - Support setting socket and IPv6 options via cmsg on ping6 sockets.

   - Reject mis-use of ECN bits in IP headers as part of DSCP/TOS.
     Define dscp_t and stop taking ECN bits into account in fib-rules.

   - Add support for locked bridge ports (for 802.1X).

   - tun: support NAPI for packets received from batched XDP buffs,
     doubling the performance in some scenarios.

   - IPv6 extension header handling in Open vSwitch.

   - Support IPv6 control message load balancing in bonding, prevent
     neighbor solicitation and advertisement from using the wrong port.
     Support NS/NA monitor selection similar to existing ARP monitor.

   - SMC
      - improve performance with TCP_CORK and sendfile()
      - support auto-corking
      - support TCP_NODELAY

   - MCTP (Management Component Transport Protocol)
      - add user space tag control interface
      - I2C binding driver (as specified by DMTF DSP0237)

   - Multi-BSSID beacon handling in AP mode for WiFi.

   - Bluetooth:
      - handle MSFT Monitor Device Event
      - add MGMT Adv Monitor Device Found/Lost events

   - Multi-Path TCP:
      - add support for the SO_SNDTIMEO socket option
      - lots of selftest cleanups and improvements

   - Increase the max PDU size in CAN ISOTP to 64 kB.

  Driver API
  ----------

   - Add HW counters for SW netdevs, a mechanism for devices which
     offload packet forwarding to report packet statistics back to
     software interfaces such as tunnels.

   - Select the default NIC queue count as a fraction of number of
     physical CPU cores, instead of hard-coding to 8.

   - Expose devlink instance locks to drivers. Allow device layer of
     drivers to use that lock directly instead of creating their own
     which always runs into ordering issues in devlink callbacks.

   - Add header/data split indication to guide user space enabling of
     TCP zero-copy Rx.

   - Allow configuring completion queue event size.

   - Refactor page_pool to enable fragmenting after allocation.

   - Add allocation and page reuse statistics to page_pool.

   - Improve Multiple Spanning Trees support in the bridge to allow
     reuse of topologies across VLANs, saving HW resources in switches.

   - DSA (Distributed Switch Architecture):
      - replay and offload of host VLAN entries
      - offload of static and local FDB entries on LAG interfaces
      - FDB isolation and unicast filtering

  New hardware / drivers
  ----------------------

   - Ethernet:
      - LAN937x T1 PHYs
      - Davicom DM9051 SPI NIC driver
      - Realtek RTL8367S, RTL8367RB-VB switch and MDIO
      - Microchip ksz8563 switches
      - Netronome NFP3800 SmartNICs
      - Fungible SmartNICs
      - MediaTek MT8195 switches

   - WiFi:
      - mt76: MediaTek mt7916
      - mt76: MediaTek mt7921u USB adapters
      - brcmfmac: Broadcom BCM43454/6

   - Mobile:
      - iosm: Intel M.2 7360 WWAN card

  Drivers
  -------

   - Convert many drivers to the new phylink API built for split PCS
     designs but also simplifying other cases.

   - Intel Ethernet NICs:
      - add TTY for GNSS module for E810T device
      - improve AF_XDP performance
      - GTP-C and GTP-U filter offload
      - QinQ VLAN support

   - Mellanox Ethernet NICs (mlx5):
      - support xdp->data_meta
      - multi-buffer XDP
      - offload tc push_eth and pop_eth actions

   - Netronome Ethernet NICs (nfp):
      - flow-independent tc action hardware offload (police / meter)
      - AF_XDP

   - Other Ethernet NICs:
      - at803x: fiber and SFP support
      - xgmac: mdio: preamble suppression and custom MDC frequencies
      - r8169: enable ASPM L1.2 if system vendor flags it as safe
      - macb/gem: ZynqMP SGMII
      - hns3: add TX push mode
      - dpaa2-eth: software TSO
      - lan743x: multi-queue, mdio, SGMII, PTP
      - axienet: NAPI and GRO support

   - Mellanox Ethernet switches (mlxsw):
      - source and dest IP address rewrites
      - RJ45 ports

   - Marvell Ethernet switches (prestera):
      - basic routing offload
      - multi-chain TC ACL offload

   - NXP embedded Ethernet switches (ocelot & felix):
      - PTP over UDP with the ocelot-8021q DSA tagging protocol
      - basic QoS classification on Felix DSA switch using dcbnl
      - port mirroring for ocelot switches

   - Microchip high-speed industrial Ethernet (sparx5):
      - offloading of bridge port flooding flags
      - PTP Hardware Clock

   - Other embedded switches:
      - lan966x: PTP Hardward Clock
      - qca8k: mdio read/write operations via crafted Ethernet packets

   - Qualcomm 802.11ax WiFi (ath11k):
      - add LDPC FEC type and 802.11ax High Efficiency data in radiotap
      - enable RX PPDU stats in monitor co-exist mode

   - Intel WiFi (iwlwifi):
      - UHB TAS enablement via BIOS
      - band disablement via BIOS
      - channel switch offload
      - 32 Rx AMPDU sessions in newer devices

   - MediaTek WiFi (mt76):
      - background radar detection
      - thermal management improvements on mt7915
      - SAR support for more mt76 platforms
      - MBSSID and 6 GHz band on mt7915

   - RealTek WiFi:
      - rtw89: AP mode
      - rtw89: 160 MHz channels and 6 GHz band
      - rtw89: hardware scan

   - Bluetooth:
      - mt7921s: wake on Bluetooth, SCO over I2S, wide-band-speed (WBS)

   - Microchip CAN (mcp251xfd):
      - multiple RX-FIFOs and runtime configurable RX/TX rings
      - internal PLL, runtime PM handling simplification
      - improve chip detection and error handling after wakeup"

* tag 'net-next-5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (2521 commits)
  llc: fix netdevice reference leaks in llc_ui_bind()
  drivers: ethernet: cpsw: fix panic when interrupt coaleceing is set via ethtool
  ice: don't allow to run ice_send_event_to_aux() in atomic ctx
  ice: fix 'scheduling while atomic' on aux critical err interrupt
  net/sched: fix incorrect vlan_push_eth dest field
  net: bridge: mst: Restrict info size queries to bridge ports
  net: marvell: prestera: add missing destroy_workqueue() in prestera_module_init()
  drivers: net: xgene: Fix regression in CRC stripping
  net: geneve: add missing netlink policy and size for IFLA_GENEVE_INNER_PROTO_INHERIT
  net: dsa: fix missing host-filtered multicast addresses
  net/mlx5e: Fix build warning, detected write beyond size of field
  iwlwifi: mvm: Don't fail if PPAG isn't supported
  selftests/bpf: Fix kprobe_multi test.
  Revert "rethook: x86: Add rethook x86 implementation"
  Revert "arm64: rethook: Add arm64 rethook implementation"
  Revert "powerpc: Add rethook support"
  Revert "ARM: rethook: Add rethook arm implementation"
  netdevice: add missing dm_private kdoc
  net: bridge: mst: prevent NULL deref in br_mst_info_size()
  selftests: forwarding: Use same VRF for port and VLAN upper
  ...

21 files changed, 252 insertions, 94 deletions

diff --git a/samples/Kconfig b/samples/Kconfig
index 10e021c72282..470ee3baf2e1 100644
--- a/samples/Kconfig
+++ b/samples/Kconfig
@@ -79,6 +79,13 @@ config SAMPLE_HW_BREAKPOINT
 	help
 	  This builds kernel hardware breakpoint example modules.
 
+config SAMPLE_FPROBE
+	tristate "Build fprobe examples -- loadable modules only"
+	depends on FPROBE && m
+	help
+	  This builds a fprobe example module. This module has an option 'symbol'.
+	  You can specify a probed symbol or symbols separated with ','.
+
 config SAMPLE_KFIFO
 	tristate "Build kfifo examples -- loadable modules only"
 	depends on m
diff --git a/samples/Makefile b/samples/Makefile
index 448343e8faeb..701e912ab5af 100644
--- a/samples/Makefile
+++ b/samples/Makefile
@@ -34,3 +34,4 @@ subdir-$(CONFIG_SAMPLE_WATCHDOG)	+= watchdog
 subdir-$(CONFIG_SAMPLE_WATCH_QUEUE)	+= watch_queue
 obj-$(CONFIG_DEBUG_KMEMLEAK_TEST)	+= kmemleak/
 obj-$(CONFIG_SAMPLE_CORESIGHT_SYSCFG)	+= coresight/
+obj-$(CONFIG_SAMPLE_FPROBE)		+= fprobe/
diff --git a/samples/bpf/map_perf_test_user.c b/samples/bpf/map_perf_test_user.c
index 319fd31522f3..e69651a6902f 100644
--- a/samples/bpf/map_perf_test_user.c
+++ b/samples/bpf/map_perf_test_user.c
@@ -413,7 +413,7 @@ static void fixup_map(struct bpf_object *obj)
 		for (i = 0; i < NR_TESTS; i++) {
 			if (!strcmp(test_map_names[i], name) &&
 			    (check_test_flags(i))) {
-				bpf_map__resize(map, num_map_entries);
+				bpf_map__set_max_entries(map, num_map_entries);
 				continue;
 			}
 		}
diff --git a/samples/bpf/xdp1_user.c b/samples/bpf/xdp1_user.c
index 8675fa5273df..631f0cabe139 100644
--- a/samples/bpf/xdp1_user.c
+++ b/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
@@ -79,13 +79,11 @@ static void usage(const char *prog)
 
 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);
 	const char *optstr = "FSN";
 	int prog_fd, map_fd, opt;
+	struct bpf_program *prog;
 	struct bpf_object *obj;
 	struct bpf_map *map;
 	char filename[256];
@@ -123,11 +121,19 @@ int main(int argc, char **argv)
 	}
 
 	snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]);
-	prog_load_attr.file = filename;
+	obj = bpf_object__open_file(filename, NULL);
+	if (libbpf_get_error(obj))
+		return 1;
+
+	prog = bpf_object__next_program(obj, NULL);
+	bpf_program__set_type(prog, BPF_PROG_TYPE_XDP);
 
-	if (bpf_prog_load_xattr(&prog_load_attr, &obj, &prog_fd))
+	err = bpf_object__load(obj);
+	if (err)
 		return 1;
 
+	prog_fd = bpf_program__fd(prog);
+
 	map = bpf_object__next_map(obj, NULL);
 	if (!map) {
 		printf("finding a map in obj file failed\n");
@@ -143,7 +149,7 @@ 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;
 	}
diff --git a/samples/bpf/xdp_adjust_tail_user.c b/samples/bpf/xdp_adjust_tail_user.c
index a70b094c8ec5..b3f6e49676ed 100644
--- a/samples/bpf/xdp_adjust_tail_user.c
+++ b/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
@@ -82,15 +82,13 @@ static void usage(const char *cmd)
 
 int main(int argc, char **argv)
 {
-	struct bpf_prog_load_attr prog_load_attr = {
-		.prog_type	= BPF_PROG_TYPE_XDP,
-	};
 	unsigned char opt_flags[256] = {};
 	const char *optstr = "i:T:P:SNFh";
 	struct bpf_prog_info info = {};
 	__u32 info_len = sizeof(info);
 	unsigned int kill_after_s = 0;
 	int i, prog_fd, map_fd, opt;
+	struct bpf_program *prog;
 	struct bpf_object *obj;
 	__u32 max_pckt_size = 0;
 	__u32 key = 0;
@@ -148,11 +146,20 @@ int main(int argc, char **argv)
 	}
 
 	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))
+	obj = bpf_object__open_file(filename, NULL);
+	if (libbpf_get_error(obj))
 		return 1;
 
+	prog = bpf_object__next_program(obj, NULL);
+	bpf_program__set_type(prog, BPF_PROG_TYPE_XDP);
+
+	err = bpf_object__load(obj);
+	if (err)
+		return 1;
+
+	prog_fd = bpf_program__fd(prog);
+
 	/* static global var 'max_pcktsz' is accessible from .data section */
 	if (max_pckt_size) {
 		map_fd = bpf_object__find_map_fd_by_name(obj, "xdp_adju.data");
@@ -173,7 +180,7 @@ 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;
 	}
diff --git a/samples/bpf/xdp_fwd_user.c b/samples/bpf/xdp_fwd_user.c
index 4ad896782f77..1828487bae9a 100644
--- a/samples/bpf/xdp_fwd_user.c
+++ b/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);
 
@@ -75,14 +75,11 @@ static void usage(const char *prog)
 
 int main(int argc, char **argv)
 {
-	struct bpf_prog_load_attr prog_load_attr = {
-		.prog_type	= BPF_PROG_TYPE_XDP,
-	};
 	const char *prog_name = "xdp_fwd";
 	struct bpf_program *prog = NULL;
 	struct bpf_program *pos;
 	const char *sec_name;
-	int prog_fd, map_fd = -1;
+	int prog_fd = -1, map_fd = -1;
 	char filename[PATH_MAX];
 	struct bpf_object *obj;
 	int opt, i, idx, err;
@@ -119,7 +116,6 @@ int main(int argc, char **argv)
 
 	if (attach) {
 		snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]);
-		prog_load_attr.file = filename;
 
 		if (access(filename, O_RDONLY) < 0) {
 			printf("error accessing file %s: %s\n",
@@ -127,7 +123,14 @@ int main(int argc, char **argv)
 			return 1;
 		}
 
-		err = bpf_prog_load_xattr(&prog_load_attr, &obj, &prog_fd);
+		obj = bpf_object__open_file(filename, NULL);
+		if (libbpf_get_error(obj))
+			return 1;
+
+		prog = bpf_object__next_program(obj, NULL);
+		bpf_program__set_type(prog, BPF_PROG_TYPE_XDP);
+
+		err = bpf_object__load(obj);
 		if (err) {
 			printf("Does kernel support devmap lookup?\n");
 			/* If not, the error message will be:
diff --git a/samples/bpf/xdp_redirect_cpu.bpf.c b/samples/bpf/xdp_redirect_cpu.bpf.c
index 25e3a405375f..87c54bfdbb70 100644
--- a/samples/bpf/xdp_redirect_cpu.bpf.c
+++ b/samples/bpf/xdp_redirect_cpu.bpf.c
@@ -491,7 +491,7 @@ int  xdp_prognum5_lb_hash_ip_pairs(struct xdp_md *ctx)
 	return bpf_redirect_map(&cpu_map, cpu_dest, 0);
 }
 
-SEC("xdp_cpumap/redirect")
+SEC("xdp/cpumap")
 int xdp_redirect_cpu_devmap(struct xdp_md *ctx)
 {
 	void *data_end = (void *)(long)ctx->data_end;
@@ -507,19 +507,19 @@ int xdp_redirect_cpu_devmap(struct xdp_md *ctx)
 	return bpf_redirect_map(&tx_port, 0, 0);
 }
 
-SEC("xdp_cpumap/pass")
+SEC("xdp/cpumap")
 int xdp_redirect_cpu_pass(struct xdp_md *ctx)
 {
 	return XDP_PASS;
 }
 
-SEC("xdp_cpumap/drop")
+SEC("xdp/cpumap")
 int xdp_redirect_cpu_drop(struct xdp_md *ctx)
 {
 	return XDP_DROP;
 }
 
-SEC("xdp_devmap/egress")
+SEC("xdp/devmap")
 int xdp_redirect_egress_prog(struct xdp_md *ctx)
 {
 	void *data_end = (void *)(long)ctx->data_end;
diff --git a/samples/bpf/xdp_redirect_cpu_user.c b/samples/bpf/xdp_redirect_cpu_user.c
index a81704d3317b..5f74a70a9021 100644
--- a/samples/bpf/xdp_redirect_cpu_user.c
+++ b/samples/bpf/xdp_redirect_cpu_user.c
@@ -70,7 +70,7 @@ static void print_avail_progs(struct bpf_object *obj)
 
 	printf(" Programs to be used for -p/--progname:\n");
 	bpf_object__for_each_program(pos, obj) {
-		if (bpf_program__is_xdp(pos)) {
+		if (bpf_program__type(pos) == BPF_PROG_TYPE_XDP) {
 			if (!strncmp(bpf_program__name(pos), "xdp_prognum",
 				     sizeof("xdp_prognum") - 1))
 				printf(" %s\n", bpf_program__name(pos));
diff --git a/samples/bpf/xdp_redirect_map.bpf.c b/samples/bpf/xdp_redirect_map.bpf.c
index 59efd656e1b2..415bac1758e3 100644
--- a/samples/bpf/xdp_redirect_map.bpf.c
+++ b/samples/bpf/xdp_redirect_map.bpf.c
@@ -68,7 +68,7 @@ int xdp_redirect_map_native(struct xdp_md *ctx)
 	return xdp_redirect_map(ctx, &tx_port_native);
 }
 
-SEC("xdp_devmap/egress")
+SEC("xdp/devmap")
 int xdp_redirect_map_egress(struct xdp_md *ctx)
 {
 	void *data_end = (void *)(long)ctx->data_end;
diff --git a/samples/bpf/xdp_redirect_map_multi.bpf.c b/samples/bpf/xdp_redirect_map_multi.bpf.c
index bb0a5a3bfcf0..8b2fd4ec2c76 100644
--- a/samples/bpf/xdp_redirect_map_multi.bpf.c
+++ b/samples/bpf/xdp_redirect_map_multi.bpf.c
@@ -53,7 +53,7 @@ int xdp_redirect_map_native(struct xdp_md *ctx)
 	return xdp_redirect_map(ctx, &forward_map_native);
 }
 
-SEC("xdp_devmap/egress")
+SEC("xdp/devmap")
 int xdp_devmap_prog(struct xdp_md *ctx)
 {
 	void *data_end = (void *)(long)ctx->data_end;
diff --git a/samples/bpf/xdp_router_ipv4_user.c b/samples/bpf/xdp_router_ipv4_user.c
index cfaf7e50e431..6dae87d83e1c 100644
--- a/samples/bpf/xdp_router_ipv4_user.c
+++ b/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]);
@@ -640,12 +640,10 @@ static void usage(const char *prog)
 
 int main(int ac, 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);
 	const char *optstr = "SF";
+	struct bpf_program *prog;
 	struct bpf_object *obj;
 	char filename[256];
 	char **ifname_list;
@@ -653,7 +651,6 @@ int main(int ac, char **argv)
 	int err, i = 1;
 
 	snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]);
-	prog_load_attr.file = filename;
 
 	total_ifindex = ac - 1;
 	ifname_list = (argv + 1);
@@ -684,14 +681,20 @@ int main(int ac, char **argv)
 		return 1;
 	}
 
-	if (bpf_prog_load_xattr(&prog_load_attr, &obj, &prog_fd))
+	obj = bpf_object__open_file(filename, NULL);
+	if (libbpf_get_error(obj))
 		return 1;
 
+	prog = bpf_object__next_program(obj, NULL);
+	bpf_program__set_type(prog, BPF_PROG_TYPE_XDP);
+
 	printf("\n******************loading bpf file*********************\n");
-	if (!prog_fd) {
-		printf("bpf_prog_load_xattr: %s\n", strerror(errno));
+	err = bpf_object__load(obj);
+	if (err) {
+		printf("bpf_object__load(): %s\n", strerror(errno));
 		return 1;
 	}
+	prog_fd = bpf_program__fd(prog);
 
 	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");
@@ -716,12 +719,12 @@ 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;
 		}
diff --git a/samples/bpf/xdp_rxq_info_user.c b/samples/bpf/xdp_rxq_info_user.c
index 74a2926eba08..f2d90cba5164 100644
--- a/samples/bpf/xdp_rxq_info_user.c
+++ b/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 {
@@ -209,7 +209,7 @@ static struct datarec *alloc_record_per_cpu(void)
 
 static struct record *alloc_record_per_rxq(void)
 {
-	unsigned int nr_rxqs = bpf_map__def(rx_queue_index_map)->max_entries;
+	unsigned int nr_rxqs = bpf_map__max_entries(rx_queue_index_map);
 	struct record *array;
 
 	array = calloc(nr_rxqs, sizeof(struct record));
@@ -222,7 +222,7 @@ static struct record *alloc_record_per_rxq(void)
 
 static struct stats_record *alloc_stats_record(void)
 {
-	unsigned int nr_rxqs = bpf_map__def(rx_queue_index_map)->max_entries;
+	unsigned int nr_rxqs = bpf_map__max_entries(rx_queue_index_map);
 	struct stats_record *rec;
 	int i;
 
@@ -241,7 +241,7 @@ static struct stats_record *alloc_stats_record(void)
 
 static void free_stats_record(struct stats_record *r)
 {
-	unsigned int nr_rxqs = bpf_map__def(rx_queue_index_map)->max_entries;
+	unsigned int nr_rxqs = bpf_map__max_entries(rx_queue_index_map);
 	int i;
 
 	for (i = 0; i < nr_rxqs; i++)
@@ -289,7 +289,7 @@ static void stats_collect(struct stats_record *rec)
 	map_collect_percpu(fd, 0, &rec->stats);
 
 	fd = bpf_map__fd(rx_queue_index_map);
-	max_rxqs = bpf_map__def(rx_queue_index_map)->max_entries;
+	max_rxqs = bpf_map__max_entries(rx_queue_index_map);
 	for (i = 0; i < max_rxqs; i++)
 		map_collect_percpu(fd, i, &rec->rxq[i]);
 }
@@ -335,7 +335,7 @@ static void stats_print(struct stats_record *stats_rec,
 			struct stats_record *stats_prev,
 			int action, __u32 cfg_opt)
 {
-	unsigned int nr_rxqs = bpf_map__def(rx_queue_index_map)->max_entries;
+	unsigned int nr_rxqs = bpf_map__max_entries(rx_queue_index_map);
 	unsigned int nr_cpus = bpf_num_possible_cpus();
 	double pps = 0, err = 0;
 	struct record *rec, *prev;
@@ -450,14 +450,12 @@ static void stats_poll(int interval, int action, __u32 cfg_opt)
 int main(int argc, char **argv)
 {
 	__u32 cfg_options= NO_TOUCH ; /* Default: Don't touch packet memory */
-	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 };
+	struct bpf_program *prog;
 	struct bpf_object *obj;
 	struct bpf_map *map;
 	char filename[256];
@@ -471,11 +469,19 @@ int main(int argc, char **argv)
 	char *action_str = NULL;
 
 	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))
+	obj = bpf_object__open_file(filename, NULL);
+	if (libbpf_get_error(obj))
 		return EXIT_FAIL;
 
+	prog = bpf_object__next_program(obj, NULL);
+	bpf_program__set_type(prog, BPF_PROG_TYPE_XDP);
+
+	err = bpf_object__load(obj);
+	if (err)
+		return EXIT_FAIL;
+	prog_fd = bpf_program__fd(prog);
+
 	map =  bpf_object__find_map_by_name(obj, "config_map");
 	stats_global_map = bpf_object__find_map_by_name(obj, "stats_global_map");
 	rx_queue_index_map = bpf_object__find_map_by_name(obj, "rx_queue_index_map");
@@ -582,7 +588,7 @@ 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;
 	}
diff --git a/samples/bpf/xdp_sample_pkts_user.c b/samples/bpf/xdp_sample_pkts_user.c
index 587eacb49103..0a2b3e997aed 100644
--- a/samples/bpf/xdp_sample_pkts_user.c
+++ b/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) {
diff --git a/samples/bpf/xdp_sample_user.c b/samples/bpf/xdp_sample_user.c
index 8740838e7767..c4332d068b91 100644
--- a/samples/bpf/xdp_sample_user.c
+++ b/samples/bpf/xdp_sample_user.c
@@ -1218,7 +1218,7 @@ int sample_setup_maps(struct bpf_map **maps)
 		default:
 			return -EINVAL;
 		}
-		if (bpf_map__resize(sample_map[i], sample_map_count[i]) < 0)
+		if (bpf_map__set_max_entries(sample_map[i], sample_map_count[i]) < 0)
 			return -errno;
 	}
 	sample_map[MAP_DEVMAP_XMIT_MULTI] = maps[MAP_DEVMAP_XMIT_MULTI];
@@ -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,
diff --git a/samples/bpf/xdp_sample_user.h b/samples/bpf/xdp_sample_user.h
index 5f44b877ecf5..f45051679977 100644
--- a/samples/bpf/xdp_sample_user.h
+++ b/samples/bpf/xdp_sample_user.h
@@ -61,7 +61,7 @@ static inline char *safe_strncpy(char *dst, const char *src, size_t size)
 
 #define __attach_tp(name)                                                      \
 	({                                                                     \
-		if (!bpf_program__is_tracing(skel->progs.name))                \
+		if (bpf_program__type(skel->progs.name) != BPF_PROG_TYPE_TRACING)\
 			return -EINVAL;                                        \
 		skel->links.name = bpf_program__attach(skel->progs.name);      \
 		if (!skel->links.name)                                         \
diff --git a/samples/bpf/xdp_tx_iptunnel_user.c b/samples/bpf/xdp_tx_iptunnel_user.c
index 1d4f305d02aa..2e811e4331cc 100644
--- a/samples/bpf/xdp_tx_iptunnel_user.c
+++ b/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
@@ -152,9 +152,6 @@ 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,
-	};
 	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] = {};
@@ -162,6 +159,7 @@ int main(int argc, char **argv)
 	__u32 info_len = sizeof(info);
 	unsigned int kill_after_s = 0;
 	struct iptnl_info tnl = {};
+	struct bpf_program *prog;
 	struct bpf_object *obj;
 	struct vip vip = {};
 	char filename[256];
@@ -259,15 +257,20 @@ int main(int argc, char **argv)
 	}
 
 	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))
+	obj = bpf_object__open_file(filename, NULL);
+	if (libbpf_get_error(obj))
 		return 1;
 
-	if (!prog_fd) {
-		printf("bpf_prog_load_xattr: %s\n", strerror(errno));
+	prog = bpf_object__next_program(obj, NULL);
+	bpf_program__set_type(prog, BPF_PROG_TYPE_XDP);
+
+	err = bpf_object__load(obj);
+	if (err) {
+		printf("bpf_object__load(): %s\n", strerror(errno));
 		return 1;
 	}
+	prog_fd = bpf_program__fd(prog);
 
 	rxcnt_map_fd = bpf_object__find_map_fd_by_name(obj, "rxcnt");
 	vip2tnl_map_fd = bpf_object__find_map_fd_by_name(obj, "vip2tnl");
@@ -288,7 +291,7 @@ 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 +305,7 @@ 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;
 }
diff --git a/samples/bpf/xdpsock_ctrl_proc.c b/samples/bpf/xdpsock_ctrl_proc.c
index cc4408797ab7..28b5f2a9fa08 100644
--- a/samples/bpf/xdpsock_ctrl_proc.c
+++ b/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;
diff --git a/samples/bpf/xdpsock_user.c b/samples/bpf/xdpsock_user.c
index aa50864e4415..6f3fe30ad283 100644
--- a/samples/bpf/xdpsock_user.c
+++ b/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);
 	}
@@ -1984,15 +1984,15 @@ int main(int argc, char **argv)
 
 	setlocale(LC_ALL, "");
 
+	prev_time = get_nsecs();
+	start_time = prev_time;
+
 	if (!opt_quiet) {
 		ret = pthread_create(&pt, NULL, poller, NULL);
 		if (ret)
 			exit_with_error(ret);
 	}
 
-	prev_time = get_nsecs();
-	start_time = prev_time;
-
 	/* Configure sched priority for better wake-up accuracy */
 	memset(&schparam, 0, sizeof(schparam));
 	schparam.sched_priority = opt_schprio;
diff --git a/samples/bpf/xsk_fwd.c b/samples/bpf/xsk_fwd.c
index 52e7c4ffd228..2220509588a0 100644
--- a/samples/bpf/xsk_fwd.c
+++ b/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)
diff --git a/samples/fprobe/Makefile b/samples/fprobe/Makefile
new file mode 100644
index 000000000000..ecccbfa6e99b
--- /dev/null
+++ b/samples/fprobe/Makefile
@@ -0,0 +1,3 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
+obj-$(CONFIG_SAMPLE_FPROBE) += fprobe_example.o
diff --git a/samples/fprobe/fprobe_example.c b/samples/fprobe/fprobe_example.c
new file mode 100644
index 000000000000..24d3cf109140
--- /dev/null
+++ b/samples/fprobe/fprobe_example.c
@@ -0,0 +1,120 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Here's a sample kernel module showing the use of fprobe to dump a
+ * stack trace and selected registers when kernel_clone() is called.
+ *
+ * For more information on theory of operation of kprobes, see
+ * Documentation/trace/kprobes.rst
+ *
+ * You will see the trace data in /var/log/messages and on the console
+ * whenever kernel_clone() is invoked to create a new process.
+ */
+
+#define pr_fmt(fmt) "%s: " fmt, __func__
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/fprobe.h>
+#include <linux/sched/debug.h>
+#include <linux/slab.h>
+
+#define BACKTRACE_DEPTH 16
+#define MAX_SYMBOL_LEN 4096
+struct fprobe sample_probe;
+
+static char symbol[MAX_SYMBOL_LEN] = "kernel_clone";
+module_param_string(symbol, symbol, sizeof(symbol), 0644);
+static char nosymbol[MAX_SYMBOL_LEN] = "";
+module_param_string(nosymbol, nosymbol, sizeof(nosymbol), 0644);
+static bool stackdump = true;
+module_param(stackdump, bool, 0644);
+
+static void show_backtrace(void)
+{
+	unsigned long stacks[BACKTRACE_DEPTH];
+	unsigned int len;
+
+	len = stack_trace_save(stacks, BACKTRACE_DEPTH, 2);
+	stack_trace_print(stacks, len, 24);
+}
+
+static void sample_entry_handler(struct fprobe *fp, unsigned long ip, struct pt_regs *regs)
+{
+	pr_info("Enter <%pS> ip = 0x%p\n", (void *)ip, (void *)ip);
+	if (stackdump)
+		show_backtrace();
+}
+
+static void sample_exit_handler(struct fprobe *fp, unsigned long ip, struct pt_regs *regs)
+{
+	unsigned long rip = instruction_pointer(regs);
+
+	pr_info("Return from <%pS> ip = 0x%p to rip = 0x%p (%pS)\n",
+		(void *)ip, (void *)ip, (void *)rip, (void *)rip);
+	if (stackdump)
+		show_backtrace();
+}
+
+static int __init fprobe_init(void)
+{
+	char *p, *symbuf = NULL;
+	const char **syms;
+	int ret, count, i;
+
+	sample_probe.entry_handler = sample_entry_handler;
+	sample_probe.exit_handler = sample_exit_handler;
+
+	if (strchr(symbol, '*')) {
+		/* filter based fprobe */
+		ret = register_fprobe(&sample_probe, symbol,
+				      nosymbol[0] == '\0' ? NULL : nosymbol);
+		goto out;
+	} else if (!strchr(symbol, ',')) {
+		symbuf = symbol;
+		ret = register_fprobe_syms(&sample_probe, (const char **)&symbuf, 1);
+		goto out;
+	}
+
+	/* Comma separated symbols */
+	symbuf = kstrdup(symbol, GFP_KERNEL);
+	if (!symbuf)
+		return -ENOMEM;
+	p = symbuf;
+	count = 1;
+	while ((p = strchr(++p, ',')) != NULL)
+		count++;
+
+	pr_info("%d symbols found\n", count);
+
+	syms = kcalloc(count, sizeof(char *), GFP_KERNEL);
+	if (!syms) {
+		kfree(symbuf);
+		return -ENOMEM;
+	}
+
+	p = symbuf;
+	for (i = 0; i < count; i++)
+		syms[i] = strsep(&p, ",");
+
+	ret = register_fprobe_syms(&sample_probe, syms, count);
+	kfree(syms);
+	kfree(symbuf);
+out:
+	if (ret < 0)
+		pr_err("register_fprobe failed, returned %d\n", ret);
+	else
+		pr_info("Planted fprobe at %s\n", symbol);
+
+	return ret;
+}
+
+static void __exit fprobe_exit(void)
+{
+	unregister_fprobe(&sample_probe);
+
+	pr_info("fprobe at %s unregistered\n", symbol);
+}
+
+module_init(fprobe_init)
+module_exit(fprobe_exit)
+MODULE_LICENSE("GPL");