diff options
Diffstat (limited to 'tools/testing/selftests/bpf')
| -rw-r--r-- | tools/testing/selftests/bpf/Makefile | 9 | ||||
| -rw-r--r-- | tools/testing/selftests/bpf/config | 1 | ||||
| -rw-r--r-- | tools/testing/selftests/bpf/progs/sendmsg6_prog.c | 3 | ||||
| -rw-r--r-- | tools/testing/selftests/bpf/test_btf_dump.c | 7 | ||||
| -rw-r--r-- | tools/testing/selftests/bpf/test_cgroup_storage.c | 6 | ||||
| -rw-r--r-- | tools/testing/selftests/bpf/test_sock.c | 7 | ||||
| -rwxr-xr-x | tools/testing/selftests/bpf/test_xdp_vlan.sh | 57 | ||||
| -rwxr-xr-x | tools/testing/selftests/bpf/test_xdp_vlan_mode_generic.sh | 9 | ||||
| -rwxr-xr-x | tools/testing/selftests/bpf/test_xdp_vlan_mode_native.sh | 9 | ||||
| -rw-r--r-- | tools/testing/selftests/bpf/verifier/ctx_skb.c | 11 | ||||
| -rw-r--r-- | tools/testing/selftests/bpf/verifier/loops1.c | 28 |
11 files changed, 126 insertions, 21 deletions
diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile index 11c9c62c3362..96752ebd938f 100644 --- a/tools/testing/selftests/bpf/Makefile +++ b/tools/testing/selftests/bpf/Makefile @@ -34,6 +34,9 @@ TEST_GEN_PROGS = test_verifier test_tag test_maps test_lru_map test_lpm_map test BPF_OBJ_FILES = $(patsubst %.c,%.o, $(notdir $(wildcard progs/*.c))) TEST_GEN_FILES = $(BPF_OBJ_FILES) +BTF_C_FILES = $(wildcard progs/btf_dump_test_case_*.c) +TEST_FILES = $(BTF_C_FILES) + # Also test sub-register code-gen if LLVM has eBPF v3 processor support which # contains both ALU32 and JMP32 instructions. SUBREG_CODEGEN := $(shell echo "int cal(int a) { return a > 0; }" | \ @@ -57,7 +60,8 @@ TEST_PROGS := test_kmod.sh \ test_lirc_mode2.sh \ test_skb_cgroup_id.sh \ test_flow_dissector.sh \ - test_xdp_vlan.sh \ + test_xdp_vlan_mode_generic.sh \ + test_xdp_vlan_mode_native.sh \ test_lwt_ip_encap.sh \ test_tcp_check_syncookie.sh \ test_tc_tunnel.sh \ @@ -67,7 +71,8 @@ TEST_PROGS := test_kmod.sh \ TEST_PROGS_EXTENDED := with_addr.sh \ with_tunnels.sh \ tcp_client.py \ - tcp_server.py + tcp_server.py \ + test_xdp_vlan.sh # Compile but not part of 'make run_tests' TEST_GEN_PROGS_EXTENDED = test_libbpf_open test_sock_addr test_skb_cgroup_id_user \ diff --git a/tools/testing/selftests/bpf/config b/tools/testing/selftests/bpf/config index f7a0744db31e..5dc109f4c097 100644 --- a/tools/testing/selftests/bpf/config +++ b/tools/testing/selftests/bpf/config @@ -34,3 +34,4 @@ CONFIG_NET_MPLS_GSO=m CONFIG_MPLS_ROUTING=m CONFIG_MPLS_IPTUNNEL=m CONFIG_IPV6_SIT=m +CONFIG_BPF_JIT=y diff --git a/tools/testing/selftests/bpf/progs/sendmsg6_prog.c b/tools/testing/selftests/bpf/progs/sendmsg6_prog.c index 5aeaa284fc47..a68062820410 100644 --- a/tools/testing/selftests/bpf/progs/sendmsg6_prog.c +++ b/tools/testing/selftests/bpf/progs/sendmsg6_prog.c @@ -41,8 +41,7 @@ int sendmsg_v6_prog(struct bpf_sock_addr *ctx) } /* Rewrite destination. */ - if ((ctx->user_ip6[0] & 0xFFFF) == bpf_htons(0xFACE) && - ctx->user_ip6[0] >> 16 == bpf_htons(0xB00C)) { + if (ctx->user_ip6[0] == bpf_htonl(0xFACEB00C)) { ctx->user_ip6[0] = bpf_htonl(DST_REWRITE_IP6_0); ctx->user_ip6[1] = bpf_htonl(DST_REWRITE_IP6_1); ctx->user_ip6[2] = bpf_htonl(DST_REWRITE_IP6_2); diff --git a/tools/testing/selftests/bpf/test_btf_dump.c b/tools/testing/selftests/bpf/test_btf_dump.c index 8f850823d35f..6e75dd3cb14f 100644 --- a/tools/testing/selftests/bpf/test_btf_dump.c +++ b/tools/testing/selftests/bpf/test_btf_dump.c @@ -97,6 +97,13 @@ int test_btf_dump_case(int n, struct btf_dump_test_case *test_case) } snprintf(test_file, sizeof(test_file), "progs/%s.c", test_case->name); + if (access(test_file, R_OK) == -1) + /* + * When the test is run with O=, kselftest copies TEST_FILES + * without preserving the directory structure. + */ + snprintf(test_file, sizeof(test_file), "%s.c", + test_case->name); /* * Diff test output and expected test output, contained between * START-EXPECTED-OUTPUT and END-EXPECTED-OUTPUT lines in test case. diff --git a/tools/testing/selftests/bpf/test_cgroup_storage.c b/tools/testing/selftests/bpf/test_cgroup_storage.c index 2fc4625c1a15..655729004391 100644 --- a/tools/testing/selftests/bpf/test_cgroup_storage.c +++ b/tools/testing/selftests/bpf/test_cgroup_storage.c @@ -20,9 +20,9 @@ int main(int argc, char **argv) BPF_MOV64_IMM(BPF_REG_2, 0), /* flags, not used */ BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_local_storage), - BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_0, 0), + BPF_LDX_MEM(BPF_DW, BPF_REG_3, BPF_REG_0, 0), BPF_ALU64_IMM(BPF_ADD, BPF_REG_3, 0x1), - BPF_STX_MEM(BPF_W, BPF_REG_0, BPF_REG_3, 0), + BPF_STX_MEM(BPF_DW, BPF_REG_0, BPF_REG_3, 0), BPF_LD_MAP_FD(BPF_REG_1, 0), /* map fd */ BPF_MOV64_IMM(BPF_REG_2, 0), /* flags, not used */ @@ -30,7 +30,7 @@ int main(int argc, char **argv) BPF_FUNC_get_local_storage), BPF_MOV64_IMM(BPF_REG_1, 1), BPF_STX_XADD(BPF_DW, BPF_REG_0, BPF_REG_1, 0), - BPF_LDX_MEM(BPF_W, BPF_REG_1, BPF_REG_0, 0), + BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_0, 0), BPF_ALU64_IMM(BPF_AND, BPF_REG_1, 0x1), BPF_MOV64_REG(BPF_REG_0, BPF_REG_1), BPF_EXIT_INSN(), diff --git a/tools/testing/selftests/bpf/test_sock.c b/tools/testing/selftests/bpf/test_sock.c index fb679ac3d4b0..0e6652733462 100644 --- a/tools/testing/selftests/bpf/test_sock.c +++ b/tools/testing/selftests/bpf/test_sock.c @@ -13,6 +13,7 @@ #include <bpf/bpf.h> #include "cgroup_helpers.h" +#include "bpf_endian.h" #include "bpf_rlimit.h" #include "bpf_util.h" @@ -232,7 +233,8 @@ static struct sock_test tests[] = { /* if (ip == expected && port == expected) */ BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_6, offsetof(struct bpf_sock, src_ip6[3])), - BPF_JMP_IMM(BPF_JNE, BPF_REG_7, 0x01000000, 4), + BPF_JMP_IMM(BPF_JNE, BPF_REG_7, + __bpf_constant_ntohl(0x00000001), 4), BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_6, offsetof(struct bpf_sock, src_port)), BPF_JMP_IMM(BPF_JNE, BPF_REG_7, 0x2001, 2), @@ -261,7 +263,8 @@ static struct sock_test tests[] = { /* if (ip == expected && port == expected) */ BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_6, offsetof(struct bpf_sock, src_ip4)), - BPF_JMP_IMM(BPF_JNE, BPF_REG_7, 0x0100007F, 4), + BPF_JMP_IMM(BPF_JNE, BPF_REG_7, + __bpf_constant_ntohl(0x7F000001), 4), BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_6, offsetof(struct bpf_sock, src_port)), BPF_JMP_IMM(BPF_JNE, BPF_REG_7, 0x1002, 2), diff --git a/tools/testing/selftests/bpf/test_xdp_vlan.sh b/tools/testing/selftests/bpf/test_xdp_vlan.sh index 51a3a31d1aac..bb8b0da91686 100755 --- a/tools/testing/selftests/bpf/test_xdp_vlan.sh +++ b/tools/testing/selftests/bpf/test_xdp_vlan.sh @@ -1,6 +1,14 @@ #!/bin/bash +# SPDX-License-Identifier: GPL-2.0 +# Author: Jesper Dangaard Brouer <hawk@kernel.org> -TESTNAME=xdp_vlan +# Allow wrapper scripts to name test +if [ -z "$TESTNAME" ]; then + TESTNAME=xdp_vlan +fi + +# Default XDP mode +XDP_MODE=xdpgeneric usage() { echo "Testing XDP + TC eBPF VLAN manipulations: $TESTNAME" @@ -9,9 +17,23 @@ usage() { echo " -v | --verbose : Verbose" echo " --flush : Flush before starting (e.g. after --interactive)" echo " --interactive : Keep netns setup running after test-run" + echo " --mode=XXX : Choose XDP mode (xdp | xdpgeneric | xdpdrv)" echo "" } +valid_xdp_mode() +{ + local mode=$1 + + case "$mode" in + xdpgeneric | xdpdrv | xdp) + return 0 + ;; + *) + return 1 + esac +} + cleanup() { local status=$? @@ -37,7 +59,7 @@ cleanup() # Using external program "getopt" to get --long-options OPTIONS=$(getopt -o hvfi: \ - --long verbose,flush,help,interactive,debug -- "$@") + --long verbose,flush,help,interactive,debug,mode: -- "$@") if (( $? != 0 )); then usage echo "selftests: $TESTNAME [FAILED] Error calling getopt, unknown option?" @@ -60,6 +82,11 @@ while true; do cleanup shift ;; + --mode ) + shift + XDP_MODE=$1 + shift + ;; -- ) shift break @@ -81,8 +108,14 @@ if [ "$EUID" -ne 0 ]; then exit 1 fi -ip link set dev lo xdp off 2>/dev/null > /dev/null -if [ $? -ne 0 ];then +valid_xdp_mode $XDP_MODE +if [ $? -ne 0 ]; then + echo "selftests: $TESTNAME [FAILED] unknown XDP mode ($XDP_MODE)" + exit 1 +fi + +ip link set dev lo xdpgeneric off 2>/dev/null > /dev/null +if [ $? -ne 0 ]; then echo "selftests: $TESTNAME [SKIP] need ip xdp support" exit 0 fi @@ -155,7 +188,7 @@ ip netns exec ns2 ip link set lo up # At this point, the hosts cannot reach each-other, # because ns2 are using VLAN tags on the packets. -ip netns exec ns2 sh -c 'ping -W 1 -c 1 100.64.41.1 || echo "Okay ping fails"' +ip netns exec ns2 sh -c 'ping -W 1 -c 1 100.64.41.1 || echo "Success: First ping must fail"' # Now we can use the test_xdp_vlan.c program to pop/push these VLAN tags @@ -166,7 +199,7 @@ export FILE=test_xdp_vlan.o # First test: Remove VLAN by setting VLAN ID 0, using "xdp_vlan_change" export XDP_PROG=xdp_vlan_change -ip netns exec ns1 ip link set $DEVNS1 xdp object $FILE section $XDP_PROG +ip netns exec ns1 ip link set $DEVNS1 $XDP_MODE object $FILE section $XDP_PROG # In ns1: egress use TC to add back VLAN tag 4011 # (del cmd) @@ -177,8 +210,8 @@ ip netns exec ns1 tc filter add dev $DEVNS1 egress \ prio 1 handle 1 bpf da obj $FILE sec tc_vlan_push # Now the namespaces can reach each-other, test with ping: -ip netns exec ns2 ping -W 2 -c 3 $IPADDR1 -ip netns exec ns1 ping -W 2 -c 3 $IPADDR2 +ip netns exec ns2 ping -i 0.2 -W 2 -c 2 $IPADDR1 +ip netns exec ns1 ping -i 0.2 -W 2 -c 2 $IPADDR2 # Second test: Replace xdp prog, that fully remove vlan header # @@ -187,9 +220,9 @@ ip netns exec ns1 ping -W 2 -c 3 $IPADDR2 # ETH_P_8021Q indication, and this cause overwriting of our changes. # export XDP_PROG=xdp_vlan_remove_outer2 -ip netns exec ns1 ip link set $DEVNS1 xdp off -ip netns exec ns1 ip link set $DEVNS1 xdp object $FILE section $XDP_PROG +ip netns exec ns1 ip link set $DEVNS1 $XDP_MODE off +ip netns exec ns1 ip link set $DEVNS1 $XDP_MODE object $FILE section $XDP_PROG # Now the namespaces should still be able reach each-other, test with ping: -ip netns exec ns2 ping -W 2 -c 3 $IPADDR1 -ip netns exec ns1 ping -W 2 -c 3 $IPADDR2 +ip netns exec ns2 ping -i 0.2 -W 2 -c 2 $IPADDR1 +ip netns exec ns1 ping -i 0.2 -W 2 -c 2 $IPADDR2 diff --git a/tools/testing/selftests/bpf/test_xdp_vlan_mode_generic.sh b/tools/testing/selftests/bpf/test_xdp_vlan_mode_generic.sh new file mode 100755 index 000000000000..c515326d6d59 --- /dev/null +++ b/tools/testing/selftests/bpf/test_xdp_vlan_mode_generic.sh @@ -0,0 +1,9 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 + +# Exit on failure +set -e + +# Wrapper script to test generic-XDP +export TESTNAME=xdp_vlan_mode_generic +./test_xdp_vlan.sh --mode=xdpgeneric diff --git a/tools/testing/selftests/bpf/test_xdp_vlan_mode_native.sh b/tools/testing/selftests/bpf/test_xdp_vlan_mode_native.sh new file mode 100755 index 000000000000..5cf7ce1f16c1 --- /dev/null +++ b/tools/testing/selftests/bpf/test_xdp_vlan_mode_native.sh @@ -0,0 +1,9 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 + +# Exit on failure +set -e + +# Wrapper script to test native-XDP +export TESTNAME=xdp_vlan_mode_native +./test_xdp_vlan.sh --mode=xdpdrv diff --git a/tools/testing/selftests/bpf/verifier/ctx_skb.c b/tools/testing/selftests/bpf/verifier/ctx_skb.c index b0fda2877119..d438193804b2 100644 --- a/tools/testing/selftests/bpf/verifier/ctx_skb.c +++ b/tools/testing/selftests/bpf/verifier/ctx_skb.c @@ -975,6 +975,17 @@ .prog_type = BPF_PROG_TYPE_CGROUP_SKB, }, { + "read gso_segs from CGROUP_SKB", + .insns = { + BPF_LDX_MEM(BPF_W, BPF_REG_1, BPF_REG_1, + offsetof(struct __sk_buff, gso_segs)), + BPF_MOV64_IMM(BPF_REG_0, 0), + BPF_EXIT_INSN(), + }, + .result = ACCEPT, + .prog_type = BPF_PROG_TYPE_CGROUP_SKB, +}, +{ "write gso_segs from CGROUP_SKB", .insns = { BPF_MOV64_IMM(BPF_REG_0, 0), diff --git a/tools/testing/selftests/bpf/verifier/loops1.c b/tools/testing/selftests/bpf/verifier/loops1.c index 5e980a5ab69d..1fc4e61e9f9f 100644 --- a/tools/testing/selftests/bpf/verifier/loops1.c +++ b/tools/testing/selftests/bpf/verifier/loops1.c @@ -159,3 +159,31 @@ .errstr = "loop detected", .prog_type = BPF_PROG_TYPE_TRACEPOINT, }, +{ + "not-taken loop with back jump to 1st insn", + .insns = { + BPF_MOV64_IMM(BPF_REG_0, 123), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 4, -2), + BPF_EXIT_INSN(), + }, + .result = ACCEPT, + .prog_type = BPF_PROG_TYPE_XDP, + .retval = 123, +}, +{ + "taken loop with back jump to 1st insn", + .insns = { + BPF_MOV64_IMM(BPF_REG_1, 10), + BPF_MOV64_IMM(BPF_REG_2, 0), + BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 1), + BPF_EXIT_INSN(), + BPF_ALU64_REG(BPF_ADD, BPF_REG_2, BPF_REG_1), + BPF_ALU64_IMM(BPF_SUB, BPF_REG_1, 1), + BPF_JMP_IMM(BPF_JNE, BPF_REG_1, 0, -3), + BPF_MOV64_REG(BPF_REG_0, BPF_REG_2), + BPF_EXIT_INSN(), + }, + .result = ACCEPT, + .prog_type = BPF_PROG_TYPE_XDP, + .retval = 55, +}, |