diff options
Diffstat (limited to 'tools/bpf/bpftool')
28 files changed, 215 insertions, 85 deletions
diff --git a/tools/bpf/bpftool/Documentation/bpftool-btf.rst b/tools/bpf/bpftool/Documentation/bpftool-btf.rst index ff4d327a582e..88b28aa7431f 100644 --- a/tools/bpf/bpftool/Documentation/bpftool-btf.rst +++ b/tools/bpf/bpftool/Documentation/bpftool-btf.rst @@ -12,7 +12,8 @@ SYNOPSIS **bpftool** [*OPTIONS*] **btf** *COMMAND* - *OPTIONS* := { { **-j** | **--json** } [{ **-p** | **--pretty** }] } + *OPTIONS* := { { **-j** | **--json** } [{ **-p** | **--pretty** }] | {**-d** | **--debug** } | + { **-B** | **--base-btf** } } *COMMANDS* := { **dump** | **help** } @@ -73,6 +74,20 @@ OPTIONS ======= .. include:: common_options.rst + -B, --base-btf *FILE* + Pass a base BTF object. Base BTF objects are typically used + with BTF objects for kernel modules. To avoid duplicating + all kernel symbols required by modules, BTF objects for + modules are "split", they are built incrementally on top of + the kernel (vmlinux) BTF object. So the base BTF reference + should usually point to the kernel BTF. + + When the main BTF object to process (for example, the + module BTF to dump) is passed as a *FILE*, bpftool attempts + to autodetect the path for the base object, and passing + this option is optional. When the main BTF object is passed + through other handles, this option becomes necessary. + EXAMPLES ======== **# bpftool btf dump id 1226** @@ -217,3 +232,34 @@ All the standard ways to specify map or program are supported: **# bpftool btf dump prog tag b88e0a09b1d9759d** **# bpftool btf dump prog pinned /sys/fs/bpf/prog_name** + +| +| **# bpftool btf dump file /sys/kernel/btf/i2c_smbus** +| (or) +| **# I2C_SMBUS_ID=$(bpftool btf show -p | jq '.[] | select(.name=="i2c_smbus").id')** +| **# bpftool btf dump id ${I2C_SMBUS_ID} -B /sys/kernel/btf/vmlinux** + +:: + + [104848] STRUCT 'i2c_smbus_alert' size=40 vlen=2 + 'alert' type_id=393 bits_offset=0 + 'ara' type_id=56050 bits_offset=256 + [104849] STRUCT 'alert_data' size=12 vlen=3 + 'addr' type_id=16 bits_offset=0 + 'type' type_id=56053 bits_offset=32 + 'data' type_id=7 bits_offset=64 + [104850] PTR '(anon)' type_id=104848 + [104851] PTR '(anon)' type_id=104849 + [104852] FUNC 'i2c_register_spd' type_id=84745 linkage=static + [104853] FUNC 'smbalert_driver_init' type_id=1213 linkage=static + [104854] FUNC_PROTO '(anon)' ret_type_id=18 vlen=1 + 'ara' type_id=56050 + [104855] FUNC 'i2c_handle_smbus_alert' type_id=104854 linkage=static + [104856] FUNC 'smbalert_remove' type_id=104854 linkage=static + [104857] FUNC_PROTO '(anon)' ret_type_id=18 vlen=2 + 'ara' type_id=56050 + 'id' type_id=56056 + [104858] FUNC 'smbalert_probe' type_id=104857 linkage=static + [104859] FUNC 'smbalert_work' type_id=9695 linkage=static + [104860] FUNC 'smbus_alert' type_id=71367 linkage=static + [104861] FUNC 'smbus_do_alert' type_id=84827 linkage=static diff --git a/tools/bpf/bpftool/Documentation/bpftool-cgroup.rst b/tools/bpf/bpftool/Documentation/bpftool-cgroup.rst index baee8591ac76..3e4395eede4f 100644 --- a/tools/bpf/bpftool/Documentation/bpftool-cgroup.rst +++ b/tools/bpf/bpftool/Documentation/bpftool-cgroup.rst @@ -12,7 +12,8 @@ SYNOPSIS **bpftool** [*OPTIONS*] **cgroup** *COMMAND* - *OPTIONS* := { { **-j** | **--json** } [{ **-p** | **--pretty** }] | { **-f** | **--bpffs** } } + *OPTIONS* := { { **-j** | **--json** } [{ **-p** | **--pretty** }] | { **-d** | **--debug** } | + { **-f** | **--bpffs** } } *COMMANDS* := { **show** | **list** | **tree** | **attach** | **detach** | **help** } diff --git a/tools/bpf/bpftool/Documentation/bpftool-feature.rst b/tools/bpf/bpftool/Documentation/bpftool-feature.rst index dd3771bdbc57..ab9f57ee4c3a 100644 --- a/tools/bpf/bpftool/Documentation/bpftool-feature.rst +++ b/tools/bpf/bpftool/Documentation/bpftool-feature.rst @@ -12,7 +12,7 @@ SYNOPSIS **bpftool** [*OPTIONS*] **feature** *COMMAND* - *OPTIONS* := { { **-j** | **--json** } [{ **-p** | **--pretty** }] } + *OPTIONS* := { { **-j** | **--json** } [{ **-p** | **--pretty** }] | { **-d** | **--debug** } } *COMMANDS* := { **probe** | **help** } diff --git a/tools/bpf/bpftool/Documentation/bpftool-gen.rst b/tools/bpf/bpftool/Documentation/bpftool-gen.rst index 7cd6681137f3..2ef2f2df0279 100644 --- a/tools/bpf/bpftool/Documentation/bpftool-gen.rst +++ b/tools/bpf/bpftool/Documentation/bpftool-gen.rst @@ -12,7 +12,8 @@ SYNOPSIS **bpftool** [*OPTIONS*] **gen** *COMMAND* - *OPTIONS* := { { **-j** | **--json** } [{ **-p** | **--pretty** }] } + *OPTIONS* := { { **-j** | **--json** } [{ **-p** | **--pretty** }] | { **-d** | **--debug** } | + { **-L** | **--use-loader** } } *COMMAND* := { **object** | **skeleton** | **help** } @@ -152,6 +153,12 @@ OPTIONS ======= .. include:: common_options.rst + -L, --use-loader + For skeletons, generate a "light" skeleton (also known as "loader" + skeleton). A light skeleton contains a loader eBPF program. It does + not use the majority of the libbpf infrastructure, and does not need + libelf. + EXAMPLES ======== **$ cat example1.bpf.c** diff --git a/tools/bpf/bpftool/Documentation/bpftool-iter.rst b/tools/bpf/bpftool/Documentation/bpftool-iter.rst index 51f49bead619..471f363a725a 100644 --- a/tools/bpf/bpftool/Documentation/bpftool-iter.rst +++ b/tools/bpf/bpftool/Documentation/bpftool-iter.rst @@ -12,6 +12,8 @@ SYNOPSIS **bpftool** [*OPTIONS*] **iter** *COMMAND* + *OPTIONS* := { { **-j** | **--json** } [{ **-p** | **--pretty** }] | { **-d** | **--debug** } } + *COMMANDS* := { **pin** | **help** } ITER COMMANDS diff --git a/tools/bpf/bpftool/Documentation/bpftool-link.rst b/tools/bpf/bpftool/Documentation/bpftool-link.rst index 5f7db2a837cc..0de90f086238 100644 --- a/tools/bpf/bpftool/Documentation/bpftool-link.rst +++ b/tools/bpf/bpftool/Documentation/bpftool-link.rst @@ -12,7 +12,8 @@ SYNOPSIS **bpftool** [*OPTIONS*] **link** *COMMAND* - *OPTIONS* := { { **-j** | **--json** } [{ **-p** | **--pretty** }] | { **-f** | **--bpffs** } } + *OPTIONS* := { { **-j** | **--json** } [{ **-p** | **--pretty** }] | { **-d** | **--debug** } | + { **-f** | **--bpffs** } | { **-n** | **--nomount** } } *COMMANDS* := { **show** | **list** | **pin** | **help** } diff --git a/tools/bpf/bpftool/Documentation/bpftool-map.rst b/tools/bpf/bpftool/Documentation/bpftool-map.rst index 3d52256ba75f..d0c4abe08aba 100644 --- a/tools/bpf/bpftool/Documentation/bpftool-map.rst +++ b/tools/bpf/bpftool/Documentation/bpftool-map.rst @@ -12,7 +12,8 @@ SYNOPSIS **bpftool** [*OPTIONS*] **map** *COMMAND* - *OPTIONS* := { { **-j** | **--json** } [{ **-p** | **--pretty** }] | { **-f** | **--bpffs** } } + *OPTIONS* := { { **-j** | **--json** } [{ **-p** | **--pretty** }] | { **-d** | **--debug** } | + { **-f** | **--bpffs** } | { **-n** | **--nomount** } } *COMMANDS* := { **show** | **list** | **create** | **dump** | **update** | **lookup** | **getnext** diff --git a/tools/bpf/bpftool/Documentation/bpftool-net.rst b/tools/bpf/bpftool/Documentation/bpftool-net.rst index d8165d530937..1ae0375e8fea 100644 --- a/tools/bpf/bpftool/Documentation/bpftool-net.rst +++ b/tools/bpf/bpftool/Documentation/bpftool-net.rst @@ -12,7 +12,7 @@ SYNOPSIS **bpftool** [*OPTIONS*] **net** *COMMAND* - *OPTIONS* := { [{ **-j** | **--json** }] [{ **-p** | **--pretty** }] } + *OPTIONS* := { { **-j** | **--json** } [{ **-p** | **--pretty** }] | { **-d** | **--debug** } } *COMMANDS* := { **show** | **list** | **attach** | **detach** | **help** } diff --git a/tools/bpf/bpftool/Documentation/bpftool-perf.rst b/tools/bpf/bpftool/Documentation/bpftool-perf.rst index e958ce91de72..ce52798a917d 100644 --- a/tools/bpf/bpftool/Documentation/bpftool-perf.rst +++ b/tools/bpf/bpftool/Documentation/bpftool-perf.rst @@ -12,7 +12,7 @@ SYNOPSIS **bpftool** [*OPTIONS*] **perf** *COMMAND* - *OPTIONS* := { [{ **-j** | **--json** }] [{ **-p** | **--pretty** }] } + *OPTIONS* := { { **-j** | **--json** } [{ **-p** | **--pretty** }] | { **-d** | **--debug** } } *COMMANDS* := { **show** | **list** | **help** } diff --git a/tools/bpf/bpftool/Documentation/bpftool-prog.rst b/tools/bpf/bpftool/Documentation/bpftool-prog.rst index fe1b38e7e887..91608cb7e44a 100644 --- a/tools/bpf/bpftool/Documentation/bpftool-prog.rst +++ b/tools/bpf/bpftool/Documentation/bpftool-prog.rst @@ -12,7 +12,9 @@ SYNOPSIS **bpftool** [*OPTIONS*] **prog** *COMMAND* - *OPTIONS* := { { **-j** | **--json** } [{ **-p** | **--pretty** }] | { **-f** | **--bpffs** } } + *OPTIONS* := { { **-j** | **--json** } [{ **-p** | **--pretty** }] | { **-d** | **--debug** } | + { **-f** | **--bpffs** } | { **-m** | **--mapcompat** } | { **-n** | **--nomount** } | + { **-L** | **--use-loader** } } *COMMANDS* := { **show** | **list** | **dump xlated** | **dump jited** | **pin** | **load** @@ -48,10 +50,11 @@ PROG COMMANDS | **struct_ops** | **fentry** | **fexit** | **freplace** | **sk_lookup** | } | *ATTACH_TYPE* := { -| **msg_verdict** | **stream_verdict** | **stream_parser** | **flow_dissector** +| **msg_verdict** | **skb_verdict** | **stream_verdict** | **stream_parser** | **flow_dissector** | } | *METRICs* := { -| **cycles** | **instructions** | **l1d_loads** | **llc_misses** +| **cycles** | **instructions** | **l1d_loads** | **llc_misses** | +| **itlb_misses** | **dtlb_misses** | } @@ -223,6 +226,20 @@ OPTIONS Do not automatically attempt to mount any virtual file system (such as tracefs or BPF virtual file system) when necessary. + -L, --use-loader + Load program as a "loader" program. This is useful to debug + the generation of such programs. When this option is in + use, bpftool attempts to load the programs from the object + file into the kernel, but does not pin them (therefore, the + *PATH* must not be provided). + + When combined with the **-d**\ \|\ **--debug** option, + additional debug messages are generated, and the execution + of the loader program will use the **bpf_trace_printk**\ () + helper to log each step of loading BTF, creating the maps, + and loading the programs (see **bpftool prog tracelog** as + a way to dump those messages). + EXAMPLES ======== **# bpftool prog show** @@ -326,3 +343,16 @@ EXAMPLES 40176203 cycles (83.05%) 42518139 instructions # 1.06 insns per cycle (83.39%) 123 llc_misses # 2.89 LLC misses per million insns (83.15%) + +| +| Output below is for the trace logs. +| Run in separate terminals: +| **# bpftool prog tracelog** +| **# bpftool prog load -L -d file.o** + +:: + + bpftool-620059 [004] d... 2634685.517903: bpf_trace_printk: btf_load size 665 r=5 + bpftool-620059 [004] d... 2634685.517912: bpf_trace_printk: map_create sample_map idx 0 type 2 value_size 4 value_btf_id 0 r=6 + bpftool-620059 [004] d... 2634685.517997: bpf_trace_printk: prog_load sample insn_cnt 13 r=7 + bpftool-620059 [004] d... 2634685.517999: bpf_trace_printk: close(5) = 0 diff --git a/tools/bpf/bpftool/Documentation/bpftool-struct_ops.rst b/tools/bpf/bpftool/Documentation/bpftool-struct_ops.rst index 506e70ee78e9..02afc0fc14cb 100644 --- a/tools/bpf/bpftool/Documentation/bpftool-struct_ops.rst +++ b/tools/bpf/bpftool/Documentation/bpftool-struct_ops.rst @@ -12,7 +12,7 @@ SYNOPSIS **bpftool** [*OPTIONS*] **struct_ops** *COMMAND* - *OPTIONS* := { { **-j** | **--json** } [{ **-p** | **--pretty** }] } + *OPTIONS* := { { **-j** | **--json** } [{ **-p** | **--pretty** }] | { **-d** | **--debug** } } *COMMANDS* := { **show** | **list** | **dump** | **register** | **unregister** | **help** } diff --git a/tools/bpf/bpftool/Documentation/bpftool.rst b/tools/bpf/bpftool/Documentation/bpftool.rst index e7d949334961..bb23f55bb05a 100644 --- a/tools/bpf/bpftool/Documentation/bpftool.rst +++ b/tools/bpf/bpftool/Documentation/bpftool.rst @@ -18,15 +18,15 @@ SYNOPSIS *OBJECT* := { **map** | **program** | **cgroup** | **perf** | **net** | **feature** } - *OPTIONS* := { { **-V** | **--version** } | { **-h** | **--help** } - | { **-j** | **--json** } [{ **-p** | **--pretty** }] } + *OPTIONS* := { { **-V** | **--version** } | + { **-j** | **--json** } [{ **-p** | **--pretty** }] | { **-d** | **--debug** } } *MAP-COMMANDS* := - { **show** | **list** | **create** | **dump** | **update** | **lookup** | **getnext** - | **delete** | **pin** | **event_pipe** | **help** } + { **show** | **list** | **create** | **dump** | **update** | **lookup** | **getnext** | + **delete** | **pin** | **event_pipe** | **help** } - *PROG-COMMANDS* := { **show** | **list** | **dump jited** | **dump xlated** | **pin** - | **load** | **attach** | **detach** | **help** } + *PROG-COMMANDS* := { **show** | **list** | **dump jited** | **dump xlated** | **pin** | + **load** | **attach** | **detach** | **help** } *CGROUP-COMMANDS* := { **show** | **list** | **attach** | **detach** | **help** } diff --git a/tools/bpf/bpftool/bash-completion/bpftool b/tools/bpf/bpftool/bash-completion/bpftool index cc33c5824a2f..88e2bcf16cca 100644 --- a/tools/bpf/bpftool/bash-completion/bpftool +++ b/tools/bpf/bpftool/bash-completion/bpftool @@ -260,7 +260,8 @@ _bpftool() # Deal with options if [[ ${words[cword]} == -* ]]; then - local c='--version --json --pretty --bpffs --mapcompat --debug' + local c='--version --json --pretty --bpffs --mapcompat --debug \ + --use-loader --base-btf' COMPREPLY=( $( compgen -W "$c" -- "$cur" ) ) return 0 fi @@ -278,7 +279,7 @@ _bpftool() _sysfs_get_netdevs return 0 ;; - file|pinned) + file|pinned|-B|--base-btf) _filedir return 0 ;; @@ -291,7 +292,8 @@ _bpftool() # Remove all options so completions don't have to deal with them. local i for (( i=1; i < ${#words[@]}; )); do - if [[ ${words[i]::1} == - ]]; then + if [[ ${words[i]::1} == - ]] && + [[ ${words[i]} != "-B" ]] && [[ ${words[i]} != "--base-btf" ]]; then words=( "${words[@]:0:i}" "${words[@]:i+1}" ) [[ $i -le $cword ]] && cword=$(( cword - 1 )) else @@ -343,7 +345,8 @@ _bpftool() local PROG_TYPE='id pinned tag name' local MAP_TYPE='id pinned name' - local METRIC_TYPE='cycles instructions l1d_loads llc_misses' + local METRIC_TYPE='cycles instructions l1d_loads llc_misses \ + itlb_misses dtlb_misses' case $command in show|list) [[ $prev != "$command" ]] && return 0 @@ -404,8 +407,10 @@ _bpftool() return 0 ;; 5) - COMPREPLY=( $( compgen -W 'msg_verdict stream_verdict \ - stream_parser flow_dissector' -- "$cur" ) ) + local BPFTOOL_PROG_ATTACH_TYPES='msg_verdict \ + skb_verdict stream_verdict stream_parser \ + flow_dissector' + COMPREPLY=( $( compgen -W "$BPFTOOL_PROG_ATTACH_TYPES" -- "$cur" ) ) return 0 ;; 6) @@ -464,7 +469,7 @@ _bpftool() case $prev in type) - COMPREPLY=( $( compgen -W "socket kprobe \ + local BPFTOOL_PROG_LOAD_TYPES='socket kprobe \ kretprobe classifier flow_dissector \ action tracepoint raw_tracepoint \ xdp perf_event cgroup/skb cgroup/sock \ @@ -479,8 +484,8 @@ _bpftool() cgroup/post_bind4 cgroup/post_bind6 \ cgroup/sysctl cgroup/getsockopt \ cgroup/setsockopt cgroup/sock_release struct_ops \ - fentry fexit freplace sk_lookup" -- \ - "$cur" ) ) + fentry fexit freplace sk_lookup' + COMPREPLY=( $( compgen -W "$BPFTOOL_PROG_LOAD_TYPES" -- "$cur" ) ) return 0 ;; id) @@ -698,15 +703,15 @@ _bpftool() return 0 ;; type) - COMPREPLY=( $( compgen -W 'hash array prog_array \ - perf_event_array percpu_hash percpu_array \ - stack_trace cgroup_array lru_hash \ + local BPFTOOL_MAP_CREATE_TYPES='hash array \ + prog_array perf_event_array percpu_hash \ + percpu_array stack_trace cgroup_array lru_hash \ lru_percpu_hash lpm_trie array_of_maps \ hash_of_maps devmap devmap_hash sockmap cpumap \ xskmap sockhash cgroup_storage reuseport_sockarray \ percpu_cgroup_storage queue stack sk_storage \ - struct_ops inode_storage task_storage' -- \ - "$cur" ) ) + struct_ops inode_storage task_storage ringbuf' + COMPREPLY=( $( compgen -W "$BPFTOOL_MAP_CREATE_TYPES" -- "$cur" ) ) return 0 ;; key|value|flags|entries) @@ -1017,34 +1022,37 @@ _bpftool() return 0 ;; attach|detach) - local ATTACH_TYPES='ingress egress sock_create sock_ops \ - device bind4 bind6 post_bind4 post_bind6 connect4 connect6 \ + local BPFTOOL_CGROUP_ATTACH_TYPES='ingress egress \ + sock_create sock_ops device \ + bind4 bind6 post_bind4 post_bind6 connect4 connect6 \ getpeername4 getpeername6 getsockname4 getsockname6 \ sendmsg4 sendmsg6 recvmsg4 recvmsg6 sysctl getsockopt \ setsockopt sock_release' local ATTACH_FLAGS='multi override' local PROG_TYPE='id pinned tag name' - case $prev in - $command) - _filedir - return 0 - ;; - ingress|egress|sock_create|sock_ops|device|bind4|bind6|\ - post_bind4|post_bind6|connect4|connect6|getpeername4|\ - getpeername6|getsockname4|getsockname6|sendmsg4|sendmsg6|\ - recvmsg4|recvmsg6|sysctl|getsockopt|setsockopt|sock_release) + # Check for $prev = $command first + if [ $prev = $command ]; then + _filedir + return 0 + # Then check for attach type. This is done outside of the + # "case $prev in" to avoid writing the whole list of attach + # types again as pattern to match (where we cannot reuse + # our variable). + elif [[ $BPFTOOL_CGROUP_ATTACH_TYPES =~ $prev ]]; then COMPREPLY=( $( compgen -W "$PROG_TYPE" -- \ "$cur" ) ) return 0 - ;; + fi + # case/esac for the other cases + case $prev in id) _bpftool_get_prog_ids return 0 ;; *) - if ! _bpftool_search_list "$ATTACH_TYPES"; then - COMPREPLY=( $( compgen -W "$ATTACH_TYPES" -- \ - "$cur" ) ) + if ! _bpftool_search_list "$BPFTOOL_CGROUP_ATTACH_TYPES"; then + COMPREPLY=( $( compgen -W \ + "$BPFTOOL_CGROUP_ATTACH_TYPES" -- "$cur" ) ) elif [[ "$command" == "attach" ]]; then # We have an attach type on the command line, # but it is not the previous word, or diff --git a/tools/bpf/bpftool/btf.c b/tools/bpf/bpftool/btf.c index 385d5c955cf3..f7e5ff3586c9 100644 --- a/tools/bpf/bpftool/btf.c +++ b/tools/bpf/bpftool/btf.c @@ -580,16 +580,12 @@ static int do_dump(int argc, char **argv) } if (!btf) { - err = btf__get_from_id(btf_id, &btf); + btf = btf__load_from_kernel_by_id_split(btf_id, base_btf); + err = libbpf_get_error(btf); if (err) { p_err("get btf by id (%u): %s", btf_id, strerror(err)); goto done; } - if (!btf) { - err = -ENOENT; - p_err("can't find btf with ID (%u)", btf_id); - goto done; - } } if (dump_c) { @@ -985,7 +981,8 @@ static int do_help(int argc, char **argv) " FORMAT := { raw | c }\n" " " HELP_SPEC_MAP "\n" " " HELP_SPEC_PROGRAM "\n" - " " HELP_SPEC_OPTIONS "\n" + " " HELP_SPEC_OPTIONS " |\n" + " {-B|--base-btf} }\n" "", bin_name, "btf"); diff --git a/tools/bpf/bpftool/btf_dumper.c b/tools/bpf/bpftool/btf_dumper.c index 7ca54d046362..9c25286a5c73 100644 --- a/tools/bpf/bpftool/btf_dumper.c +++ b/tools/bpf/bpftool/btf_dumper.c @@ -64,8 +64,10 @@ static int dump_prog_id_as_func_ptr(const struct btf_dumper *d, } info = &prog_info->info; - if (!info->btf_id || !info->nr_func_info || - btf__get_from_id(info->btf_id, &prog_btf)) + if (!info->btf_id || !info->nr_func_info) + goto print; + prog_btf = btf__load_from_kernel_by_id(info->btf_id); + if (libbpf_get_error(prog_btf)) goto print; finfo = u64_to_ptr(info->func_info); func_type = btf__type_by_id(prog_btf, finfo->type_id); diff --git a/tools/bpf/bpftool/cgroup.c b/tools/bpf/bpftool/cgroup.c index 6e53b1d393f4..3571a281c43f 100644 --- a/tools/bpf/bpftool/cgroup.c +++ b/tools/bpf/bpftool/cgroup.c @@ -501,7 +501,8 @@ static int do_help(int argc, char **argv) HELP_SPEC_ATTACH_TYPES "\n" " " HELP_SPEC_ATTACH_FLAGS "\n" " " HELP_SPEC_PROGRAM "\n" - " " HELP_SPEC_OPTIONS "\n" + " " HELP_SPEC_OPTIONS " |\n" + " {-f|--bpffs} }\n" "", bin_name, argv[-2]); diff --git a/tools/bpf/bpftool/common.c b/tools/bpf/bpftool/common.c index 1828bba19020..d42d930a3ec4 100644 --- a/tools/bpf/bpftool/common.c +++ b/tools/bpf/bpftool/common.c @@ -67,6 +67,12 @@ const char * const attach_type_name[__MAX_BPF_ATTACH_TYPE] = { [BPF_MODIFY_RETURN] = "mod_ret", [BPF_LSM_MAC] = "lsm_mac", [BPF_SK_LOOKUP] = "sk_lookup", + [BPF_TRACE_ITER] = "trace_iter", + [BPF_XDP_DEVMAP] = "xdp_devmap", + [BPF_XDP_CPUMAP] = "xdp_cpumap", + [BPF_XDP] = "xdp", + [BPF_SK_REUSEPORT_SELECT] = "sk_skb_reuseport_select", + [BPF_SK_REUSEPORT_SELECT_OR_MIGRATE] = "sk_skb_reuseport_select_or_migrate", }; void p_err(const char *fmt, ...) @@ -222,6 +228,11 @@ int mount_bpffs_for_pin(const char *name) int err = 0; file = malloc(strlen(name) + 1); + if (!file) { + p_err("mem alloc failed"); + return -1; + } + strcpy(file, name); dir = dirname(file); diff --git a/tools/bpf/bpftool/feature.c b/tools/bpf/bpftool/feature.c index 40a88df275f9..7f36385aa9e2 100644 --- a/tools/bpf/bpftool/feature.c +++ b/tools/bpf/bpftool/feature.c @@ -1005,6 +1005,7 @@ static int do_help(int argc, char **argv) " %1$s %2$s help\n" "\n" " COMPONENT := { kernel | dev NAME }\n" + " " HELP_SPEC_OPTIONS " }\n" "", bin_name, argv[-2]); diff --git a/tools/bpf/bpftool/gen.c b/tools/bpf/bpftool/gen.c index 1d71ff8c52fa..d40d92bbf0e4 100644 --- a/tools/bpf/bpftool/gen.c +++ b/tools/bpf/bpftool/gen.c @@ -1026,7 +1026,8 @@ static int do_help(int argc, char **argv) " %1$s %2$s skeleton FILE [name OBJECT_NAME]\n" " %1$s %2$s help\n" "\n" - " " HELP_SPEC_OPTIONS "\n" + " " HELP_SPEC_OPTIONS " |\n" + " {-L|--use-loader} }\n" "", bin_name, "gen"); diff --git a/tools/bpf/bpftool/iter.c b/tools/bpf/bpftool/iter.c index 3b1aad7535dd..84a9b01d956d 100644 --- a/tools/bpf/bpftool/iter.c +++ b/tools/bpf/bpftool/iter.c @@ -97,7 +97,9 @@ static int do_help(int argc, char **argv) fprintf(stderr, "Usage: %1$s %2$s pin OBJ PATH [map MAP]\n" " %1$s %2$s help\n" + "\n" " " HELP_SPEC_MAP "\n" + " " HELP_SPEC_OPTIONS " }\n" "", bin_name, "iter"); diff --git a/tools/bpf/bpftool/link.c b/tools/bpf/bpftool/link.c index e77e1525d20a..8cc3e36f8cc6 100644 --- a/tools/bpf/bpftool/link.c +++ b/tools/bpf/bpftool/link.c @@ -401,7 +401,8 @@ static int do_help(int argc, char **argv) " %1$s %2$s help\n" "\n" " " HELP_SPEC_LINK "\n" - " " HELP_SPEC_OPTIONS "\n" + " " HELP_SPEC_OPTIONS " |\n" + " {-f|--bpffs} | {-n|--nomount} }\n" "", bin_name, argv[-2]); diff --git a/tools/bpf/bpftool/main.c b/tools/bpf/bpftool/main.c index 3ddfd4843738..02eaaf065f65 100644 --- a/tools/bpf/bpftool/main.c +++ b/tools/bpf/bpftool/main.c @@ -64,7 +64,8 @@ static int do_help(int argc, char **argv) " %s version\n" "\n" " OBJECT := { prog | map | link | cgroup | perf | net | feature | btf | gen | struct_ops | iter }\n" - " " HELP_SPEC_OPTIONS "\n" + " " HELP_SPEC_OPTIONS " |\n" + " {-V|--version} }\n" "", bin_name, bin_name, bin_name); diff --git a/tools/bpf/bpftool/main.h b/tools/bpf/bpftool/main.h index c1cf29798b99..90caa42aac4c 100644 --- a/tools/bpf/bpftool/main.h +++ b/tools/bpf/bpftool/main.h @@ -57,8 +57,7 @@ static inline void *u64_to_ptr(__u64 ptr) #define HELP_SPEC_PROGRAM \ "PROG := { id PROG_ID | pinned FILE | tag PROG_TAG | name PROG_NAME }" #define HELP_SPEC_OPTIONS \ - "OPTIONS := { {-j|--json} [{-p|--pretty}] | {-f|--bpffs} |\n" \ - "\t {-m|--mapcompat} | {-n|--nomount} }" + "OPTIONS := { {-j|--json} [{-p|--pretty}] | {-d|--debug}" #define HELP_SPEC_MAP \ "MAP := { id MAP_ID | pinned FILE | name MAP_NAME }" #define HELP_SPEC_LINK \ diff --git a/tools/bpf/bpftool/map.c b/tools/bpf/bpftool/map.c index 09ae0381205b..407071d54ab1 100644 --- a/tools/bpf/bpftool/map.c +++ b/tools/bpf/bpftool/map.c @@ -807,10 +807,11 @@ static struct btf *get_map_kv_btf(const struct bpf_map_info *info) } else if (info->btf_value_type_id) { int err; - err = btf__get_from_id(info->btf_id, &btf); - if (err || !btf) { + btf = btf__load_from_kernel_by_id(info->btf_id); + err = libbpf_get_error(btf); + if (err) { p_err("failed to get btf"); - btf = err ? ERR_PTR(err) : ERR_PTR(-ESRCH); + btf = ERR_PTR(err); } } @@ -1039,11 +1040,10 @@ static void print_key_value(struct bpf_map_info *info, void *key, void *value) { json_writer_t *btf_wtr; - struct btf *btf = NULL; - int err; + struct btf *btf; - err = btf__get_from_id(info->btf_id, &btf); - if (err) { + btf = btf__load_from_kernel_by_id(info->btf_id); + if (libbpf_get_error(btf)) { p_err("failed to get btf"); return; } @@ -1466,8 +1466,9 @@ static int do_help(int argc, char **argv) " devmap | devmap_hash | sockmap | cpumap | xskmap | sockhash |\n" " cgroup_storage | reuseport_sockarray | percpu_cgroup_storage |\n" " queue | stack | sk_storage | struct_ops | ringbuf | inode_storage |\n" - " task_storage }\n" - " " HELP_SPEC_OPTIONS "\n" + " task_storage }\n" + " " HELP_SPEC_OPTIONS " |\n" + " {-f|--bpffs} | {-n|--nomount} }\n" "", bin_name, argv[-2]); diff --git a/tools/bpf/bpftool/net.c b/tools/bpf/bpftool/net.c index f836d115d7d6..649053704bd7 100644 --- a/tools/bpf/bpftool/net.c +++ b/tools/bpf/bpftool/net.c @@ -729,6 +729,7 @@ static int do_help(int argc, char **argv) "\n" " " HELP_SPEC_PROGRAM "\n" " ATTACH_TYPE := { xdp | xdpgeneric | xdpdrv | xdpoffload }\n" + " " HELP_SPEC_OPTIONS " }\n" "\n" "Note: Only xdp and tc attachments are supported now.\n" " For progs attached to cgroups, use \"bpftool cgroup\"\n" diff --git a/tools/bpf/bpftool/perf.c b/tools/bpf/bpftool/perf.c index ad23934819c7..50de087b0db7 100644 --- a/tools/bpf/bpftool/perf.c +++ b/tools/bpf/bpftool/perf.c @@ -231,7 +231,10 @@ static int do_show(int argc, char **argv) static int do_help(int argc, char **argv) { fprintf(stderr, - "Usage: %1$s %2$s { show | list | help }\n" + "Usage: %1$s %2$s { show | list }\n" + " %1$s %2$s help }\n" + "\n" + " " HELP_SPEC_OPTIONS " }\n" "", bin_name, argv[-2]); diff --git a/tools/bpf/bpftool/prog.c b/tools/bpf/bpftool/prog.c index cc48726740ad..9c3e343b7d87 100644 --- a/tools/bpf/bpftool/prog.c +++ b/tools/bpf/bpftool/prog.c @@ -249,10 +249,10 @@ static void show_prog_metadata(int fd, __u32 num_maps) struct bpf_map_info map_info; struct btf_var_secinfo *vsi; bool printed_header = false; - struct btf *btf = NULL; unsigned int i, vlen; void *value = NULL; const char *name; + struct btf *btf; int err; if (!num_maps) @@ -263,8 +263,8 @@ static void show_prog_metadata(int fd, __u32 num_maps) if (!value) return; - err = btf__get_from_id(map_info.btf_id, &btf); - if (err || !btf) + btf = btf__load_from_kernel_by_id(map_info.btf_id); + if (libbpf_get_error(btf)) goto out_free; t_datasec = btf__type_by_id(btf, map_info.btf_value_type_id); @@ -646,9 +646,12 @@ prog_dump(struct bpf_prog_info *info, enum dump_mode mode, member_len = info->xlated_prog_len; } - if (info->btf_id && btf__get_from_id(info->btf_id, &btf)) { - p_err("failed to get btf"); - return -1; + if (info->btf_id) { + btf = btf__load_from_kernel_by_id(info->btf_id); + if (libbpf_get_error(btf)) { + p_err("failed to get btf"); + return -1; + } } func_info = u64_to_ptr(info->func_info); @@ -781,6 +784,8 @@ prog_dump(struct bpf_prog_info *info, enum dump_mode mode, kernel_syms_destroy(&dd); } + btf__free(btf); + return 0; } @@ -2002,8 +2007,8 @@ static char *profile_target_name(int tgt_fd) struct bpf_prog_info_linear *info_linear; struct bpf_func_info *func_info; const struct btf_type *t; + struct btf *btf = NULL; char *name = NULL; - struct btf *btf; info_linear = bpf_program__get_prog_info_linear( tgt_fd, 1UL << BPF_PROG_INFO_FUNC_INFO); @@ -2012,12 +2017,17 @@ static char *profile_target_name(int tgt_fd) return NULL; } - if (info_linear->info.btf_id == 0 || - btf__get_from_id(info_linear->info.btf_id, &btf)) { + if (info_linear->info.btf_id == 0) { p_err("prog FD %d doesn't have valid btf", tgt_fd); goto out; } + btf = btf__load_from_kernel_by_id(info_linear->info.btf_id); + if (libbpf_get_error(btf)) { + p_err("failed to load btf for prog FD %d", tgt_fd); + goto out; + } + func_info = u64_to_ptr(info_linear->info.func_info); t = btf__type_by_id(btf, func_info[0].type_id); if (!t) { @@ -2027,6 +2037,7 @@ static char *profile_target_name(int tgt_fd) } name = strdup(btf__name_by_offset(btf, t->name_off)); out: + btf__free(btf); free(info_linear); return name; } @@ -2245,10 +2256,12 @@ static int do_help(int argc, char **argv) " cgroup/sendmsg6 | cgroup/recvmsg4 | cgroup/recvmsg6 |\n" " cgroup/getsockopt | cgroup/setsockopt | cgroup/sock_release |\n" " struct_ops | fentry | fexit | freplace | sk_lookup }\n" - " ATTACH_TYPE := { msg_verdict | stream_verdict | stream_parser |\n" - " flow_dissector }\n" + " ATTACH_TYPE := { msg_verdict | skb_verdict | stream_verdict |\n" + " stream_parser | flow_dissector }\n" " METRIC := { cycles | instructions | l1d_loads | llc_misses | itlb_misses | dtlb_misses }\n" - " " HELP_SPEC_OPTIONS "\n" + " " HELP_SPEC_OPTIONS " |\n" + " {-f|--bpffs} | {-m|--mapcompat} | {-n|--nomount} |\n" + " {-L|--use-loader} }\n" "", bin_name, argv[-2]); diff --git a/tools/bpf/bpftool/struct_ops.c b/tools/bpf/bpftool/struct_ops.c index b58b91f62ffb..ab2d2290569a 100644 --- a/tools/bpf/bpftool/struct_ops.c +++ b/tools/bpf/bpftool/struct_ops.c @@ -572,8 +572,8 @@ static int do_help(int argc, char **argv) " %1$s %2$s unregister STRUCT_OPS_MAP\n" " %1$s %2$s help\n" "\n" - " OPTIONS := { {-j|--json} [{-p|--pretty}] }\n" " STRUCT_OPS_MAP := [ id STRUCT_OPS_MAP_ID | name STRUCT_OPS_MAP_NAME ]\n" + " " HELP_SPEC_OPTIONS " }\n" "", bin_name, argv[-2]); |