Merge tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next

Daniel Borkmann says:

====================
bpf-next 2023-01-28

We've added 124 non-merge commits during the last 22 day(s) which contain
a total of 124 files changed, 6386 insertions(+), 1827 deletions(-).

The main changes are:

1) Implement XDP hints via kfuncs with initial support for RX hash and
   timestamp metadata kfuncs, from Stanislav Fomichev and
   Toke Høiland-Jørgensen.
   Measurements on overhead: https://lore.kernel.org/bpf/875yellcx6.fsf@toke.dk

2) Extend libbpf's bpf_tracing.h support for tracing arguments of
   kprobes/uprobes and syscall as a special case, from Andrii Nakryiko.

3) Significantly reduce the search time for module symbols by livepatch
   and BPF, from Jiri Olsa and Zhen Lei.

4) Enable cpumasks to be used as kptrs, which is useful for tracing
   programs tracking which tasks end up running on which CPUs
   in different time intervals, from David Vernet.

5) Fix several issues in the dynptr processing such as stack slot liveness
   propagation, missing checks for PTR_TO_STACK variable offset, etc,
   from Kumar Kartikeya Dwivedi.

6) Various performance improvements, fixes, and introduction of more
   than just one XDP program to XSK selftests, from Magnus Karlsson.

7) Big batch to BPF samples to reduce deprecated functionality,
   from Daniel T. Lee.

8) Enable struct_ops programs to be sleepable in verifier,
   from David Vernet.

9) Reduce pr_warn() noise on BTF mismatches when they are expected under
   the CONFIG_MODULE_ALLOW_BTF_MISMATCH config anyway, from Connor O'Brien.

10) Describe modulo and division by zero behavior of the BPF runtime
    in BPF's instruction specification document, from Dave Thaler.

11) Several improvements to libbpf API documentation in libbpf.h,
    from Grant Seltzer.

12) Improve resolve_btfids header dependencies related to subcmd and add
    proper support for HOSTCC, from Ian Rogers.

13) Add ipip6 and ip6ip decapsulation support for bpf_skb_adjust_room()
    helper along with BPF selftests, from Ziyang Xuan.

14) Simplify the parsing logic of structure parameters for BPF trampoline
    in the x86-64 JIT compiler, from Pu Lehui.

15) Get BTF working for kernels with CONFIG_RUST enabled by excluding
    Rust compilation units with pahole, from Martin Rodriguez Reboredo.

16) Get bpf_setsockopt() working for kTLS on top of TCP sockets,
    from Kui-Feng Lee.

17) Disable stack protection for BPF objects in bpftool given BPF backends
    don't support it, from Holger Hoffstätte.

* tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (124 commits)
  selftest/bpf: Make crashes more debuggable in test_progs
  libbpf: Add documentation to map pinning API functions
  libbpf: Fix malformed documentation formatting
  selftests/bpf: Properly enable hwtstamp in xdp_hw_metadata
  selftests/bpf: Calls bpf_setsockopt() on a ktls enabled socket.
  bpf: Check the protocol of a sock to agree the calls to bpf_setsockopt().
  bpf/selftests: Verify struct_ops prog sleepable behavior
  bpf: Pass const struct bpf_prog * to .check_member
  libbpf: Support sleepable struct_ops.s section
  bpf: Allow BPF_PROG_TYPE_STRUCT_OPS programs to be sleepable
  selftests/bpf: Fix vmtest static compilation error
  tools/resolve_btfids: Alter how HOSTCC is forced
  tools/resolve_btfids: Install subcmd headers
  bpf/docs: Document the nocast aliasing behavior of ___init
  bpf/docs: Document how nested trusted fields may be defined
  bpf/docs: Document cpumask kfuncs in a new file
  selftests/bpf: Add selftest suite for cpumask kfuncs
  selftests/bpf: Add nested trust selftests suite
  bpf: Enable cpumasks to be queried and used as kptrs
  bpf: Disallow NULLable pointers for trusted kfuncs
  ...
====================

Link: https://lore.kernel.org/r/20230128004827.21371-1-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

19 files changed, 179 insertions, 167 deletions

diff --git a/samples/bpf/Makefile b/samples/bpf/Makefile
index 22039a0a5b35..615f24ebc49c 100644
--- a/samples/bpf/Makefile
+++ b/samples/bpf/Makefile
@@ -131,7 +131,7 @@ always-y += tracex4_kern.o
 always-y += tracex5_kern.o
 always-y += tracex6_kern.o
 always-y += tracex7_kern.o
-always-y += sock_flags_kern.o
+always-y += sock_flags.bpf.o
 always-y += test_probe_write_user.bpf.o
 always-y += trace_output.bpf.o
 always-y += tcbpf1_kern.o
@@ -140,19 +140,19 @@ always-y += lathist_kern.o
 always-y += offwaketime_kern.o
 always-y += spintest_kern.o
 always-y += map_perf_test.bpf.o
-always-y += test_overhead_tp_kern.o
-always-y += test_overhead_raw_tp_kern.o
-always-y += test_overhead_kprobe_kern.o
+always-y += test_overhead_tp.bpf.o
+always-y += test_overhead_raw_tp.bpf.o
+always-y += test_overhead_kprobe.bpf.o
 always-y += parse_varlen.o parse_simple.o parse_ldabs.o
-always-y += test_cgrp2_tc_kern.o
+always-y += test_cgrp2_tc.bpf.o
 always-y += xdp1_kern.o
 always-y += xdp2_kern.o
 always-y += test_current_task_under_cgroup.bpf.o
 always-y += trace_event_kern.o
 always-y += sampleip_kern.o
-always-y += lwt_len_hist_kern.o
+always-y += lwt_len_hist.bpf.o
 always-y += xdp_tx_iptunnel_kern.o
-always-y += test_map_in_map_kern.o
+always-y += test_map_in_map.bpf.o
 always-y += tcp_synrto_kern.o
 always-y += tcp_rwnd_kern.o
 always-y += tcp_bufs_kern.o
diff --git a/samples/bpf/lwt_len_hist_kern.c b/samples/bpf/lwt_len_hist.bpf.c
index 1fa14c54963a..dbab80e813fe 100644
--- a/samples/bpf/lwt_len_hist_kern.c
+++ b/samples/bpf/lwt_len_hist.bpf.c
@@ -10,29 +10,16 @@
  * General Public License for more details.
  */
 
-#include <uapi/linux/bpf.h>
-#include <uapi/linux/if_ether.h>
-#include <uapi/linux/ip.h>
-#include <uapi/linux/in.h>
+#include "vmlinux.h"
 #include <bpf/bpf_helpers.h>
 
-struct bpf_elf_map {
-	__u32 type;
-	__u32 size_key;
-	__u32 size_value;
-	__u32 max_elem;
-	__u32 flags;
-	__u32 id;
-	__u32 pinning;
-};
-
-struct bpf_elf_map SEC("maps") lwt_len_hist_map = {
-	.type = BPF_MAP_TYPE_PERCPU_HASH,
-	.size_key = sizeof(__u64),
-	.size_value = sizeof(__u64),
-	.pinning = 2,
-	.max_elem = 1024,
-};
+struct {
+	__uint(type, BPF_MAP_TYPE_PERCPU_HASH);
+	__type(key, u64);
+	__type(value, u64);
+	__uint(pinning, LIBBPF_PIN_BY_NAME);
+	__uint(max_entries, 1024);
+} lwt_len_hist_map SEC(".maps");
 
 static unsigned int log2(unsigned int v)
 {
diff --git a/samples/bpf/lwt_len_hist.sh b/samples/bpf/lwt_len_hist.sh
index 0eda9754f50b..7078bfcc4f4d 100755
--- a/samples/bpf/lwt_len_hist.sh
+++ b/samples/bpf/lwt_len_hist.sh
@@ -4,7 +4,7 @@
 NS1=lwt_ns1
 VETH0=tst_lwt1a
 VETH1=tst_lwt1b
-
+BPF_PROG=lwt_len_hist.bpf.o
 TRACE_ROOT=/sys/kernel/debug/tracing
 
 function cleanup {
@@ -30,7 +30,7 @@ ip netns exec $NS1 netserver
 
 echo 1 > ${TRACE_ROOT}/tracing_on
 cp /dev/null ${TRACE_ROOT}/trace
-ip route add 192.168.253.2/32 encap bpf out obj lwt_len_hist_kern.o section len_hist dev $VETH0
+ip route add 192.168.253.2/32 encap bpf out obj $BPF_PROG section len_hist dev $VETH0
 netperf -H 192.168.253.2 -t TCP_STREAM
 cat ${TRACE_ROOT}/trace | grep -v '^#'
 ./lwt_len_hist
diff --git a/samples/bpf/net_shared.h b/samples/bpf/net_shared.h
new file mode 100644
index 000000000000..e9429af9aa44
--- /dev/null
+++ b/samples/bpf/net_shared.h
@@ -0,0 +1,32 @@
+// SPDX-License-Identifier: GPL-2.0
+#ifndef _NET_SHARED_H
+#define _NET_SHARED_H
+
+#define AF_INET		2
+#define AF_INET6	10
+
+#define ETH_ALEN 6
+#define ETH_P_802_3_MIN 0x0600
+#define ETH_P_8021Q 0x8100
+#define ETH_P_8021AD 0x88A8
+#define ETH_P_IP 0x0800
+#define ETH_P_IPV6 0x86DD
+#define ETH_P_ARP 0x0806
+#define IPPROTO_ICMPV6 58
+
+#define TC_ACT_OK		0
+#define TC_ACT_SHOT		2
+
+#if defined(__BYTE_ORDER__) && defined(__ORDER_LITTLE_ENDIAN__) && \
+	__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
+#define bpf_ntohs(x)		__builtin_bswap16(x)
+#define bpf_htons(x)		__builtin_bswap16(x)
+#elif defined(__BYTE_ORDER__) && defined(__ORDER_BIG_ENDIAN__) && \
+	__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
+#define bpf_ntohs(x)		(x)
+#define bpf_htons(x)		(x)
+#else
+# error "Endianness detection needs to be set up for your compiler?!"
+#endif
+
+#endif
diff --git a/samples/bpf/sock_flags_kern.c b/samples/bpf/sock_flags.bpf.c
index 6d0ac7569d6f..0da749f6a9e1 100644
--- a/samples/bpf/sock_flags_kern.c
+++ b/samples/bpf/sock_flags.bpf.c
@@ -1,11 +1,9 @@
-#include <uapi/linux/bpf.h>
-#include <linux/socket.h>
-#include <linux/net.h>
-#include <uapi/linux/in.h>
-#include <uapi/linux/in6.h>
+// SPDX-License-Identifier: GPL-2.0
+#include "vmlinux.h"
+#include "net_shared.h"
 #include <bpf/bpf_helpers.h>
 
-SEC("cgroup/sock1")
+SEC("cgroup/sock")
 int bpf_prog1(struct bpf_sock *sk)
 {
 	char fmt[] = "socket: family %d type %d protocol %d\n";
@@ -17,29 +15,29 @@ int bpf_prog1(struct bpf_sock *sk)
 	bpf_trace_printk(fmt, sizeof(fmt), sk->family, sk->type, sk->protocol);
 	bpf_trace_printk(fmt2, sizeof(fmt2), uid, gid);
 
-	/* block PF_INET6, SOCK_RAW, IPPROTO_ICMPV6 sockets
+	/* block AF_INET6, SOCK_DGRAM, IPPROTO_ICMPV6 sockets
 	 * ie., make ping6 fail
 	 */
-	if (sk->family == PF_INET6 &&
-	    sk->type == SOCK_RAW   &&
+	if (sk->family == AF_INET6 &&
+	    sk->type == SOCK_DGRAM   &&
 	    sk->protocol == IPPROTO_ICMPV6)
 		return 0;
 
 	return 1;
 }
 
-SEC("cgroup/sock2")
+SEC("cgroup/sock")
 int bpf_prog2(struct bpf_sock *sk)
 {
 	char fmt[] = "socket: family %d type %d protocol %d\n";
 
 	bpf_trace_printk(fmt, sizeof(fmt), sk->family, sk->type, sk->protocol);
 
-	/* block PF_INET, SOCK_RAW, IPPROTO_ICMP sockets
+	/* block AF_INET, SOCK_DGRAM, IPPROTO_ICMP sockets
 	 * ie., make ping fail
 	 */
-	if (sk->family == PF_INET &&
-	    sk->type == SOCK_RAW  &&
+	if (sk->family == AF_INET &&
+	    sk->type == SOCK_DGRAM  &&
 	    sk->protocol == IPPROTO_ICMP)
 		return 0;
 
diff --git a/samples/bpf/tc_l2_redirect.sh b/samples/bpf/tc_l2_redirect.sh
index 37d95ef3c20f..a28a8fc99dbe 100755
--- a/samples/bpf/tc_l2_redirect.sh
+++ b/samples/bpf/tc_l2_redirect.sh
@@ -8,6 +8,7 @@ REDIRECT_USER='./tc_l2_redirect'
 REDIRECT_BPF='./tc_l2_redirect_kern.o'
 
 RP_FILTER=$(< /proc/sys/net/ipv4/conf/all/rp_filter)
+IPV6_DISABLED=$(< /proc/sys/net/ipv6/conf/all/disable_ipv6)
 IPV6_FORWARDING=$(< /proc/sys/net/ipv6/conf/all/forwarding)
 
 function config_common {
@@ -64,6 +65,7 @@ function config_common {
 
 	sysctl -q -w net.ipv4.conf.all.rp_filter=0
 	sysctl -q -w net.ipv6.conf.all.forwarding=1
+	sysctl -q -w net.ipv6.conf.all.disable_ipv6=0
 }
 
 function cleanup {
@@ -77,6 +79,7 @@ function cleanup {
 	$IP link del ip6t >& /dev/null
 	sysctl -q -w net.ipv4.conf.all.rp_filter=$RP_FILTER
 	sysctl -q -w net.ipv6.conf.all.forwarding=$IPV6_FORWARDING
+	sysctl -q -w net.ipv6.conf.all.disable_ipv6=$IPV6_DISABLED
 	rm -f /sys/fs/bpf/tc/globals/tun_iface
 	[[ -z $DEBUG ]] || set -x
 	set -e
diff --git a/samples/bpf/test_cgrp2_sock.sh b/samples/bpf/test_cgrp2_sock.sh
index 9f6174236856..36bd7cb46f06 100755
--- a/samples/bpf/test_cgrp2_sock.sh
+++ b/samples/bpf/test_cgrp2_sock.sh
@@ -3,6 +3,8 @@
 
 # Test various socket options that can be set by attaching programs to cgroups.
 
+MY_DIR=$(dirname $0)
+TEST=$MY_DIR/test_cgrp2_sock
 CGRP_MNT="/tmp/cgroupv2-test_cgrp2_sock"
 
 ################################################################################
@@ -19,7 +21,7 @@ print_result()
 
 check_sock()
 {
-	out=$(test_cgrp2_sock)
+	out=$($TEST)
 	echo $out | grep -q "$1"
 	if [ $? -ne 0 ]; then
 		print_result 1 "IPv4: $2"
@@ -33,7 +35,7 @@ check_sock()
 
 check_sock6()
 {
-	out=$(test_cgrp2_sock -6)
+	out=$($TEST -6)
 	echo $out | grep -q "$1"
 	if [ $? -ne 0 ]; then
 		print_result 1 "IPv6: $2"
@@ -61,7 +63,7 @@ cleanup_and_exit()
 
 	[ -n "$msg" ] && echo "ERROR: $msg"
 
-	test_cgrp2_sock -d ${CGRP_MNT}/sockopts
+	$TEST -d ${CGRP_MNT}/sockopts
 	ip li del cgrp2_sock
 	umount ${CGRP_MNT}
 
@@ -98,7 +100,7 @@ check_sock6 "dev , mark 0, priority 0" "No programs attached"
 
 # verify device is set
 #
-test_cgrp2_sock -b cgrp2_sock ${CGRP_MNT}/sockopts
+$TEST -b cgrp2_sock ${CGRP_MNT}/sockopts
 if [ $? -ne 0 ]; then
 	cleanup_and_exit 1 "Failed to install program to set device"
 fi
@@ -107,7 +109,7 @@ check_sock6 "dev cgrp2_sock, mark 0, priority 0" "Device set"
 
 # verify mark is set
 #
-test_cgrp2_sock -m 666 ${CGRP_MNT}/sockopts
+$TEST -m 666 ${CGRP_MNT}/sockopts
 if [ $? -ne 0 ]; then
 	cleanup_and_exit 1 "Failed to install program to set mark"
 fi
@@ -116,7 +118,7 @@ check_sock6 "dev , mark 666, priority 0" "Mark set"
 
 # verify priority is set
 #
-test_cgrp2_sock -p 123 ${CGRP_MNT}/sockopts
+$TEST -p 123 ${CGRP_MNT}/sockopts
 if [ $? -ne 0 ]; then
 	cleanup_and_exit 1 "Failed to install program to set priority"
 fi
@@ -125,7 +127,7 @@ check_sock6 "dev , mark 0, priority 123" "Priority set"
 
 # all 3 at once
 #
-test_cgrp2_sock -b cgrp2_sock -m 666 -p 123 ${CGRP_MNT}/sockopts
+$TEST -b cgrp2_sock -m 666 -p 123 ${CGRP_MNT}/sockopts
 if [ $? -ne 0 ]; then
 	cleanup_and_exit 1 "Failed to install program to set device, mark and priority"
 fi
diff --git a/samples/bpf/test_cgrp2_sock2.sh b/samples/bpf/test_cgrp2_sock2.sh
index 6a3dbe642b2b..82acff93d739 100755
--- a/samples/bpf/test_cgrp2_sock2.sh
+++ b/samples/bpf/test_cgrp2_sock2.sh
@@ -2,18 +2,23 @@
 # SPDX-License-Identifier: GPL-2.0
 
 BPFFS=/sys/fs/bpf
+MY_DIR=$(dirname $0)
+TEST=$MY_DIR/test_cgrp2_sock2
 LINK_PIN=$BPFFS/test_cgrp2_sock2
+BPF_PROG=$MY_DIR/sock_flags.bpf.o
 
 function config_device {
 	ip netns add at_ns0
 	ip link add veth0 type veth peer name veth0b
-	ip link set veth0b up
 	ip link set veth0 netns at_ns0
+	ip netns exec at_ns0 sysctl -q net.ipv6.conf.veth0.disable_ipv6=0
 	ip netns exec at_ns0 ip addr add 172.16.1.100/24 dev veth0
 	ip netns exec at_ns0 ip addr add 2401:db00::1/64 dev veth0 nodad
 	ip netns exec at_ns0 ip link set dev veth0 up
+	sysctl -q net.ipv6.conf.veth0b.disable_ipv6=0
 	ip addr add 172.16.1.101/24 dev veth0b
 	ip addr add 2401:db00::2/64 dev veth0b nodad
+	ip link set veth0b up
 }
 
 function config_cgroup {
@@ -34,7 +39,7 @@ function config_bpffs {
 }
 
 function attach_bpf {
-	./test_cgrp2_sock2 /tmp/cgroupv2/foo sock_flags_kern.o $1
+	$TEST /tmp/cgroupv2/foo $BPF_PROG $1
 	[ $? -ne 0 ] && exit 1
 }
 
diff --git a/samples/bpf/test_cgrp2_tc_kern.c b/samples/bpf/test_cgrp2_tc.bpf.c
index 4dd532a312b9..c7d2291d676f 100644
--- a/samples/bpf/test_cgrp2_tc_kern.c
+++ b/samples/bpf/test_cgrp2_tc.bpf.c
@@ -5,11 +5,8 @@
  * License as published by the Free Software Foundation.
  */
 #define KBUILD_MODNAME "foo"
-#include <uapi/linux/if_ether.h>
-#include <uapi/linux/in6.h>
-#include <uapi/linux/ipv6.h>
-#include <uapi/linux/pkt_cls.h>
-#include <uapi/linux/bpf.h>
+#include "vmlinux.h"
+#include "net_shared.h"
 #include <bpf/bpf_helpers.h>
 
 /* copy of 'struct ethhdr' without __packed */
@@ -19,24 +16,13 @@ struct eth_hdr {
 	unsigned short  h_proto;
 };
 
-#define PIN_GLOBAL_NS		2
-struct bpf_elf_map {
-	__u32 type;
-	__u32 size_key;
-	__u32 size_value;
-	__u32 max_elem;
-	__u32 flags;
-	__u32 id;
-	__u32 pinning;
-};
-
-struct bpf_elf_map SEC("maps") test_cgrp2_array_pin = {
-	.type		= BPF_MAP_TYPE_CGROUP_ARRAY,
-	.size_key	= sizeof(uint32_t),
-	.size_value	= sizeof(uint32_t),
-	.pinning	= PIN_GLOBAL_NS,
-	.max_elem	= 1,
-};
+struct {
+	__uint(type, BPF_MAP_TYPE_CGROUP_ARRAY);
+	__type(key, u32);
+	__type(value, u32);
+	__uint(pinning, LIBBPF_PIN_BY_NAME);
+	__uint(max_entries, 1);
+} test_cgrp2_array_pin SEC(".maps");
 
 SEC("filter")
 int handle_egress(struct __sk_buff *skb)
@@ -53,7 +39,7 @@ int handle_egress(struct __sk_buff *skb)
 	if (data + sizeof(*eth) + sizeof(*ip6h) > data_end)
 		return TC_ACT_OK;
 
-	if (eth->h_proto != htons(ETH_P_IPV6) ||
+	if (eth->h_proto != bpf_htons(ETH_P_IPV6) ||
 	    ip6h->nexthdr != IPPROTO_ICMPV6) {
 		bpf_trace_printk(dont_care_msg, sizeof(dont_care_msg),
 				 eth->h_proto, ip6h->nexthdr);
diff --git a/samples/bpf/test_cgrp2_tc.sh b/samples/bpf/test_cgrp2_tc.sh
index 395573be6ae8..38e8dbc9d16e 100755
--- a/samples/bpf/test_cgrp2_tc.sh
+++ b/samples/bpf/test_cgrp2_tc.sh
@@ -4,7 +4,7 @@
 MY_DIR=$(dirname $0)
 # Details on the bpf prog
 BPF_CGRP2_ARRAY_NAME='test_cgrp2_array_pin'
-BPF_PROG="$MY_DIR/test_cgrp2_tc_kern.o"
+BPF_PROG="$MY_DIR/test_cgrp2_tc.bpf.o"
 BPF_SECTION='filter'
 
 [ -z "$TC" ] && TC='tc'
@@ -73,11 +73,13 @@ setup_net() {
 	start)
 	    $IP link add $HOST_IFC type veth peer name $NS_IFC || return $?
 	    $IP link set dev $HOST_IFC up || return $?
+	    sysctl -q net.ipv6.conf.$HOST_IFC.disable_ipv6=0
 	    sysctl -q net.ipv6.conf.$HOST_IFC.accept_dad=0
 
-	    $IP netns add ns || return $?
-	    $IP link set dev $NS_IFC netns ns || return $?
+	    $IP netns add $NS || return $?
+	    $IP link set dev $NS_IFC netns $NS || return $?
 	    $IP -n $NS link set dev $NS_IFC up || return $?
+	    $IP netns exec $NS sysctl -q net.ipv6.conf.$NS_IFC.disable_ipv6=0
 	    $IP netns exec $NS sysctl -q net.ipv6.conf.$NS_IFC.accept_dad=0
 	    $TC qdisc add dev $HOST_IFC clsact || return $?
 	    $TC filter add dev $HOST_IFC egress bpf da obj $BPF_PROG sec $BPF_SECTION || return $?
diff --git a/samples/bpf/test_lwt_bpf.c b/samples/bpf/test_lwt_bpf.c
index 1b568575ad11..9a13dbb81847 100644
--- a/samples/bpf/test_lwt_bpf.c
+++ b/samples/bpf/test_lwt_bpf.c
@@ -10,16 +10,8 @@
  * General Public License for more details.
  */
 
-#include <stdint.h>
-#include <stddef.h>
-#include <linux/bpf.h>
-#include <linux/ip.h>
-#include <linux/in.h>
-#include <linux/in6.h>
-#include <linux/tcp.h>
-#include <linux/udp.h>
-#include <linux/icmpv6.h>
-#include <linux/if_ether.h>
+#include "vmlinux.h"
+#include "net_shared.h"
 #include <bpf/bpf_helpers.h>
 #include <string.h>
 
@@ -44,9 +36,9 @@ SEC("test_ctx")
 int do_test_ctx(struct __sk_buff *skb)
 {
 	skb->cb[0] = CB_MAGIC;
-	printk("len %d hash %d protocol %d\n", skb->len, skb->hash,
+	printk("len %d hash %d protocol %d", skb->len, skb->hash,
 	       skb->protocol);
-	printk("cb %d ingress_ifindex %d ifindex %d\n", skb->cb[0],
+	printk("cb %d ingress_ifindex %d ifindex %d", skb->cb[0],
 	       skb->ingress_ifindex, skb->ifindex);
 
 	return BPF_OK;
@@ -56,9 +48,9 @@ int do_test_ctx(struct __sk_buff *skb)
 SEC("test_cb")
 int do_test_cb(struct __sk_buff *skb)
 {
-	printk("cb0: %x cb1: %x cb2: %x\n", skb->cb[0], skb->cb[1],
+	printk("cb0: %x cb1: %x cb2: %x", skb->cb[0], skb->cb[1],
 	       skb->cb[2]);
-	printk("cb3: %x cb4: %x\n", skb->cb[3], skb->cb[4]);
+	printk("cb3: %x cb4: %x", skb->cb[3], skb->cb[4]);
 
 	return BPF_OK;
 }
@@ -72,11 +64,11 @@ int do_test_data(struct __sk_buff *skb)
 	struct iphdr *iph = data;
 
 	if (data + sizeof(*iph) > data_end) {
-		printk("packet truncated\n");
+		printk("packet truncated");
 		return BPF_DROP;
 	}
 
-	printk("src: %x dst: %x\n", iph->saddr, iph->daddr);
+	printk("src: %x dst: %x", iph->saddr, iph->daddr);
 
 	return BPF_OK;
 }
@@ -97,7 +89,7 @@ static inline int rewrite(struct __sk_buff *skb, uint32_t old_ip,
 
 	ret = bpf_skb_load_bytes(skb, IP_PROTO_OFF, &proto, 1);
 	if (ret < 0) {
-		printk("bpf_l4_csum_replace failed: %d\n", ret);
+		printk("bpf_l4_csum_replace failed: %d", ret);
 		return BPF_DROP;
 	}
 
@@ -120,14 +112,14 @@ static inline int rewrite(struct __sk_buff *skb, uint32_t old_ip,
 		ret = bpf_l4_csum_replace(skb, off, old_ip, new_ip,
 					  flags | sizeof(new_ip));
 		if (ret < 0) {
-			printk("bpf_l4_csum_replace failed: %d\n");
+			printk("bpf_l4_csum_replace failed: %d");
 			return BPF_DROP;
 		}
 	}
 
 	ret = bpf_l3_csum_replace(skb, IP_CSUM_OFF, old_ip, new_ip, sizeof(new_ip));
 	if (ret < 0) {
-		printk("bpf_l3_csum_replace failed: %d\n", ret);
+		printk("bpf_l3_csum_replace failed: %d", ret);
 		return BPF_DROP;
 	}
 
@@ -137,7 +129,7 @@ static inline int rewrite(struct __sk_buff *skb, uint32_t old_ip,
 		ret = bpf_skb_store_bytes(skb, IP_SRC_OFF, &new_ip, sizeof(new_ip), 0);
 
 	if (ret < 0) {
-		printk("bpf_skb_store_bytes() failed: %d\n", ret);
+		printk("bpf_skb_store_bytes() failed: %d", ret);
 		return BPF_DROP;
 	}
 
@@ -153,12 +145,12 @@ int do_test_rewrite(struct __sk_buff *skb)
 
 	ret = bpf_skb_load_bytes(skb, IP_DST_OFF, &old_ip, 4);
 	if (ret < 0) {
-		printk("bpf_skb_load_bytes failed: %d\n", ret);
+		printk("bpf_skb_load_bytes failed: %d", ret);
 		return BPF_DROP;
 	}
 
 	if (old_ip == 0x2fea8c0) {
-		printk("out: rewriting from %x to %x\n", old_ip, new_ip);
+		printk("out: rewriting from %x to %x", old_ip, new_ip);
 		return rewrite(skb, old_ip, new_ip, 1);
 	}
 
@@ -173,16 +165,16 @@ static inline int __do_push_ll_and_redirect(struct __sk_buff *skb)
 
 	ret = bpf_skb_change_head(skb, 14, 0);
 	if (ret < 0) {
-		printk("skb_change_head() failed: %d\n", ret);
+		printk("skb_change_head() failed: %d", ret);
 	}
 
-	ehdr.h_proto = __constant_htons(ETH_P_IP);
+	ehdr.h_proto = bpf_htons(ETH_P_IP);
 	memcpy(&ehdr.h_source, &smac, 6);
 	memcpy(&ehdr.h_dest, &dmac, 6);
 
 	ret = bpf_skb_store_bytes(skb, 0, &ehdr, sizeof(ehdr), 0);
 	if (ret < 0) {
-		printk("skb_store_bytes() failed: %d\n", ret);
+		printk("skb_store_bytes() failed: %d", ret);
 		return BPF_DROP;
 	}
 
@@ -202,7 +194,7 @@ int do_push_ll_and_redirect(struct __sk_buff *skb)
 
 	ret = __do_push_ll_and_redirect(skb);
 	if (ret >= 0)
-		printk("redirected to %d\n", ifindex);
+		printk("redirected to %d", ifindex);
 
 	return ret;
 }
@@ -229,7 +221,7 @@ SEC("fill_garbage")
 int do_fill_garbage(struct __sk_buff *skb)
 {
 	__fill_garbage(skb);
-	printk("Set initial 96 bytes of header to FF\n");
+	printk("Set initial 96 bytes of header to FF");
 	return BPF_OK;
 }
 
@@ -238,7 +230,7 @@ int do_fill_garbage_and_redirect(struct __sk_buff *skb)
 {
 	int ifindex = DST_IFINDEX;
 	__fill_garbage(skb);
-	printk("redirected to %d\n", ifindex);
+	printk("redirected to %d", ifindex);
 	return bpf_redirect(ifindex, 0);
 }
 
@@ -246,7 +238,7 @@ int do_fill_garbage_and_redirect(struct __sk_buff *skb)
 SEC("drop_all")
 int do_drop_all(struct __sk_buff *skb)
 {
-	printk("dropping with: %d\n", BPF_DROP);
+	printk("dropping with: %d", BPF_DROP);
 	return BPF_DROP;
 }
 
diff --git a/samples/bpf/test_lwt_bpf.sh b/samples/bpf/test_lwt_bpf.sh
index 65a976058dd3..2e9f5126963b 100755
--- a/samples/bpf/test_lwt_bpf.sh
+++ b/samples/bpf/test_lwt_bpf.sh
@@ -19,7 +19,10 @@ IPVETH3="192.168.111.2"
 
 IP_LOCAL="192.168.99.1"
 
+PROG_SRC="test_lwt_bpf.c"
+BPF_PROG="test_lwt_bpf.o"
 TRACE_ROOT=/sys/kernel/debug/tracing
+CONTEXT_INFO=$(cat ${TRACE_ROOT}/trace_options | grep context)
 
 function lookup_mac()
 {
@@ -36,7 +39,7 @@ function lookup_mac()
 
 function cleanup {
 	set +ex
-	rm test_lwt_bpf.o 2> /dev/null
+	rm $BPF_PROG 2> /dev/null
 	ip link del $VETH0 2> /dev/null
 	ip link del $VETH1 2> /dev/null
 	ip link del $VETH2 2> /dev/null
@@ -76,7 +79,7 @@ function install_test {
 	cleanup_routes
 	cp /dev/null ${TRACE_ROOT}/trace
 
-	OPTS="encap bpf headroom 14 $1 obj test_lwt_bpf.o section $2 $VERBOSE"
+	OPTS="encap bpf headroom 14 $1 obj $BPF_PROG section $2 $VERBOSE"
 
 	if [ "$1" == "in" ];  then
 		ip route add table local local ${IP_LOCAL}/32 $OPTS dev lo
@@ -96,7 +99,7 @@ function remove_prog {
 function filter_trace {
 	# Add newline to allow starting EXPECT= variables on newline
 	NL=$'\n'
-	echo "${NL}$*" | sed -e 's/^.*: : //g'
+	echo "${NL}$*" | sed -e 's/bpf_trace_printk: //g'
 }
 
 function expect_fail {
@@ -160,11 +163,11 @@ function test_ctx_out {
 		failure "test_ctx out: packets are dropped"
 	}
 	match_trace "$(get_trace)" "
-len 84 hash 0 protocol 0
+len 84 hash 0 protocol 8
 cb 1234 ingress_ifindex 0 ifindex 0
-len 84 hash 0 protocol 0
+len 84 hash 0 protocol 8
 cb 1234 ingress_ifindex 0 ifindex 0
-len 84 hash 0 protocol 0
+len 84 hash 0 protocol 8
 cb 1234 ingress_ifindex 0 ifindex 0" || exit 1
 	remove_prog out
 }
@@ -367,6 +370,7 @@ setup_one_veth $NS1 $VETH0 $VETH1 $IPVETH0 $IPVETH1 $IPVETH1b
 setup_one_veth $NS2 $VETH2 $VETH3 $IPVETH2 $IPVETH3
 ip netns exec $NS1 netserver
 echo 1 > ${TRACE_ROOT}/tracing_on
+echo nocontext-info > ${TRACE_ROOT}/trace_options
 
 DST_MAC=$(lookup_mac $VETH1 $NS1)
 SRC_MAC=$(lookup_mac $VETH0)
@@ -374,7 +378,7 @@ DST_IFINDEX=$(cat /sys/class/net/$VETH0/ifindex)
 
 CLANG_OPTS="-O2 -target bpf -I ../include/"
 CLANG_OPTS+=" -DSRC_MAC=$SRC_MAC -DDST_MAC=$DST_MAC -DDST_IFINDEX=$DST_IFINDEX"
-clang $CLANG_OPTS -c test_lwt_bpf.c -o test_lwt_bpf.o
+clang $CLANG_OPTS -c $PROG_SRC -o $BPF_PROG
 
 test_ctx_xmit
 test_ctx_out
@@ -397,4 +401,5 @@ test_netperf_redirect
 
 cleanup
 echo 0 > ${TRACE_ROOT}/tracing_on
+echo $CONTEXT_INFO > ${TRACE_ROOT}/trace_options
 exit 0
diff --git a/samples/bpf/test_map_in_map_kern.c b/samples/bpf/test_map_in_map.bpf.c
index 0e17f9ade5c5..1883559e5977 100644
--- a/samples/bpf/test_map_in_map_kern.c
+++ b/samples/bpf/test_map_in_map.bpf.c
@@ -6,16 +6,17 @@
  * License as published by the Free Software Foundation.
  */
 #define KBUILD_MODNAME "foo"
-#include <linux/ptrace.h>
+#include "vmlinux.h"
 #include <linux/version.h>
-#include <uapi/linux/bpf.h>
-#include <uapi/linux/in6.h>
 #include <bpf/bpf_helpers.h>
 #include <bpf/bpf_tracing.h>
 #include <bpf/bpf_core_read.h>
 
 #define MAX_NR_PORTS 65536
 
+#define EINVAL 22
+#define ENOENT 2
+
 /* map #0 */
 struct inner_a {
 	__uint(type, BPF_MAP_TYPE_ARRAY);
diff --git a/samples/bpf/test_map_in_map_user.c b/samples/bpf/test_map_in_map_user.c
index 652ec720533d..9e79df4071f5 100644
--- a/samples/bpf/test_map_in_map_user.c
+++ b/samples/bpf/test_map_in_map_user.c
@@ -120,7 +120,7 @@ int main(int argc, char **argv)
 	struct bpf_object *obj;
 	char filename[256];
 
-	snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]);
+	snprintf(filename, sizeof(filename), "%s.bpf.o", argv[0]);
 	obj = bpf_object__open_file(filename, NULL);
 	if (libbpf_get_error(obj)) {
 		fprintf(stderr, "ERROR: opening BPF object file failed\n");
diff --git a/samples/bpf/test_overhead_kprobe_kern.c b/samples/bpf/test_overhead_kprobe.bpf.c
index 8fdd2c9c56b2..c3528731e0e1 100644
--- a/samples/bpf/test_overhead_kprobe_kern.c
+++ b/samples/bpf/test_overhead_kprobe.bpf.c
@@ -4,10 +4,8 @@
  * modify it under the terms of version 2 of the GNU General Public
  * License as published by the Free Software Foundation.
  */
+#include "vmlinux.h"
 #include <linux/version.h>
-#include <linux/ptrace.h>
-#include <linux/sched.h>
-#include <uapi/linux/bpf.h>
 #include <bpf/bpf_helpers.h>
 #include <bpf/bpf_tracing.h>
 
@@ -39,7 +37,7 @@ int prog(struct pt_regs *ctx)
 	return 0;
 }
 
-SEC("kprobe/urandom_read")
+SEC("kprobe/fib_table_lookup")
 int prog2(struct pt_regs *ctx)
 {
 	return 0;
diff --git a/samples/bpf/test_overhead_raw_tp_kern.c b/samples/bpf/test_overhead_raw_tp.bpf.c
index 8763181a32f3..6af39fe3f8dd 100644
--- a/samples/bpf/test_overhead_raw_tp_kern.c
+++ b/samples/bpf/test_overhead_raw_tp.bpf.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 /* Copyright (c) 2018 Facebook */
-#include <uapi/linux/bpf.h>
+#include "vmlinux.h"
 #include <bpf/bpf_helpers.h>
 
 SEC("raw_tracepoint/task_rename")
@@ -9,7 +9,7 @@ int prog(struct bpf_raw_tracepoint_args *ctx)
 	return 0;
 }
 
-SEC("raw_tracepoint/urandom_read")
+SEC("raw_tracepoint/fib_table_lookup")
 int prog2(struct bpf_raw_tracepoint_args *ctx)
 {
 	return 0;
diff --git a/samples/bpf/test_overhead_tp_kern.c b/samples/bpf/test_overhead_tp.bpf.c
index 80edadacb692..67cab3881969 100644
--- a/samples/bpf/test_overhead_tp_kern.c
+++ b/samples/bpf/test_overhead_tp.bpf.c
@@ -4,8 +4,7 @@
  * modify it under the terms of version 2 of the GNU General Public
  * License as published by the Free Software Foundation.
  */
-#include <linux/sched.h>
-#include <uapi/linux/bpf.h>
+#include "vmlinux.h"
 #include <bpf/bpf_helpers.h>
 
 /* from /sys/kernel/debug/tracing/events/task/task_rename/format */
@@ -22,15 +21,27 @@ int prog(struct task_rename *ctx)
 	return 0;
 }
 
-/* from /sys/kernel/debug/tracing/events/random/urandom_read/format */
-struct urandom_read {
+/* from /sys/kernel/debug/tracing/events/fib/fib_table_lookup/format */
+struct fib_table_lookup {
 	__u64 pad;
-	int got_bits;
-	int pool_left;
-	int input_left;
+	__u32 tb_id;
+	int err;
+	int oif;
+	int iif;
+	__u8 proto;
+	__u8 tos;
+	__u8 scope;
+	__u8 flags;
+	__u8 src[4];
+	__u8 dst[4];
+	__u8 gw4[4];
+	__u8 gw6[16];
+	__u16 sport;
+	__u16 dport;
+	char name[16];
 };
-SEC("tracepoint/random/urandom_read")
-int prog2(struct urandom_read *ctx)
+SEC("tracepoint/fib/fib_table_lookup")
+int prog2(struct fib_table_lookup *ctx)
 {
 	return 0;
 }
diff --git a/samples/bpf/test_overhead_user.c b/samples/bpf/test_overhead_user.c
index 88717f8ec6ac..dbd86f7b1473 100644
--- a/samples/bpf/test_overhead_user.c
+++ b/samples/bpf/test_overhead_user.c
@@ -11,6 +11,8 @@
 #include <unistd.h>
 #include <assert.h>
 #include <sys/wait.h>
+#include <sys/socket.h>
+#include <arpa/inet.h>
 #include <stdlib.h>
 #include <signal.h>
 #include <linux/bpf.h>
@@ -20,6 +22,8 @@
 #include <bpf/libbpf.h>
 
 #define MAX_CNT 1000000
+#define DUMMY_IP "127.0.0.1"
+#define DUMMY_PORT 80
 
 static struct bpf_link *links[2];
 static struct bpf_object *obj;
@@ -35,8 +39,8 @@ static __u64 time_get_ns(void)
 
 static void test_task_rename(int cpu)
 {
-	__u64 start_time;
 	char buf[] = "test\n";
+	__u64 start_time;
 	int i, fd;
 
 	fd = open("/proc/self/comm", O_WRONLY|O_TRUNC);
@@ -57,26 +61,32 @@ static void test_task_rename(int cpu)
 	close(fd);
 }
 
-static void test_urandom_read(int cpu)
+static void test_fib_table_lookup(int cpu)
 {
+	struct sockaddr_in addr;
+	char buf[] = "test\n";
 	__u64 start_time;
-	char buf[4];
 	int i, fd;
 
-	fd = open("/dev/urandom", O_RDONLY);
+	fd = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
 	if (fd < 0) {
-		printf("couldn't open /dev/urandom\n");
+		printf("couldn't open socket\n");
 		exit(1);
 	}
+	memset((char *)&addr, 0, sizeof(addr));
+	addr.sin_addr.s_addr = inet_addr(DUMMY_IP);
+	addr.sin_port = htons(DUMMY_PORT);
+	addr.sin_family = AF_INET;
 	start_time = time_get_ns();
 	for (i = 0; i < MAX_CNT; i++) {
-		if (read(fd, buf, sizeof(buf)) < 0) {
-			printf("failed to read from /dev/urandom: %s\n", strerror(errno));
+		if (sendto(fd, buf, strlen(buf), 0,
+			   (struct sockaddr *)&addr, sizeof(addr)) < 0) {
+			printf("failed to start ping: %s\n", strerror(errno));
 			close(fd);
 			return;
 		}
 	}
-	printf("urandom_read:%d: %lld events per sec\n",
+	printf("fib_table_lookup:%d: %lld events per sec\n",
 	       cpu, MAX_CNT * 1000000000ll / (time_get_ns() - start_time));
 	close(fd);
 }
@@ -92,7 +102,7 @@ static void loop(int cpu, int flags)
 	if (flags & 1)
 		test_task_rename(cpu);
 	if (flags & 2)
-		test_urandom_read(cpu);
+		test_fib_table_lookup(cpu);
 }
 
 static void run_perf_test(int tasks, int flags)
@@ -179,7 +189,7 @@ int main(int argc, char **argv)
 
 	if (test_flags & 0xC) {
 		snprintf(filename, sizeof(filename),
-			 "%s_kprobe_kern.o", argv[0]);
+			 "%s_kprobe.bpf.o", argv[0]);
 
 		printf("w/KPROBE\n");
 		err = load_progs(filename);
@@ -191,7 +201,7 @@ int main(int argc, char **argv)
 
 	if (test_flags & 0x30) {
 		snprintf(filename, sizeof(filename),
-			 "%s_tp_kern.o", argv[0]);
+			 "%s_tp.bpf.o", argv[0]);
 		printf("w/TRACEPOINT\n");
 		err = load_progs(filename);
 		if (!err)
@@ -202,7 +212,7 @@ int main(int argc, char **argv)
 
 	if (test_flags & 0xC0) {
 		snprintf(filename, sizeof(filename),
-			 "%s_raw_tp_kern.o", argv[0]);
+			 "%s_raw_tp.bpf.o", argv[0]);
 		printf("w/RAW_TRACEPOINT\n");
 		err = load_progs(filename);
 		if (!err)
diff --git a/samples/bpf/xdp_sample.bpf.h b/samples/bpf/xdp_sample.bpf.h
index 25b1dbe9b37b..fecc41c5df04 100644
--- a/samples/bpf/xdp_sample.bpf.h
+++ b/samples/bpf/xdp_sample.bpf.h
@@ -7,17 +7,9 @@
 #include <bpf/bpf_core_read.h>
 #include <bpf/bpf_helpers.h>
 
+#include "net_shared.h"
 #include "xdp_sample_shared.h"
 
-#define ETH_ALEN 6
-#define ETH_P_802_3_MIN 0x0600
-#define ETH_P_8021Q 0x8100
-#define ETH_P_8021AD 0x88A8
-#define ETH_P_IP 0x0800
-#define ETH_P_IPV6 0x86DD
-#define ETH_P_ARP 0x0806
-#define IPPROTO_ICMPV6 58
-
 #define EINVAL 22
 #define ENETDOWN 100
 #define EMSGSIZE 90
@@ -55,18 +47,6 @@ static __always_inline void swap_src_dst_mac(void *data)
 	p[5] = dst[2];
 }
 
-#if defined(__BYTE_ORDER__) && defined(__ORDER_LITTLE_ENDIAN__) && \
-	__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
-#define bpf_ntohs(x)		__builtin_bswap16(x)
-#define bpf_htons(x)		__builtin_bswap16(x)
-#elif defined(__BYTE_ORDER__) && defined(__ORDER_BIG_ENDIAN__) && \
-	__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
-#define bpf_ntohs(x)		(x)
-#define bpf_htons(x)		(x)
-#else
-# error "Endianness detection needs to be set up for your compiler?!"
-#endif
-
 /*
  * Note: including linux/compiler.h or linux/kernel.h for the macros below
  * conflicts with vmlinux.h include in BPF files, so we define them here.