1 .. SPDX-License-Identifier: (GPL-2.0-only OR B 1 .. SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 2
3 ================ 3 ================
4 bpftool-prog 4 bpftool-prog
5 ================ 5 ================
6 ---------------------------------------------- 6 -------------------------------------------------------------------------------
7 tool for inspection and simple manipulation of 7 tool for inspection and simple manipulation of eBPF progs
8 ---------------------------------------------- 8 -------------------------------------------------------------------------------
9 9
10 :Manual section: 8 10 :Manual section: 8
11 11
12 .. include:: substitutions.rst 12 .. include:: substitutions.rst
13 13
14 SYNOPSIS 14 SYNOPSIS
15 ======== 15 ========
16 16
17 **bpftool** [*OPTIONS*] **prog** *COMMAND* 17 **bpftool** [*OPTIONS*] **prog** *COMMAND*
18 18
19 *OPTIONS* := { |COMMON_OPTIONS| | 19 *OPTIONS* := { |COMMON_OPTIONS| |
20 { **-f** | **--bpffs** } | { **-m** | **--mapc 20 { **-f** | **--bpffs** } | { **-m** | **--mapcompat** } | { **-n** | **--nomount** } |
21 { **-L** | **--use-loader** } } 21 { **-L** | **--use-loader** } }
22 22
23 *COMMANDS* := 23 *COMMANDS* :=
24 { **show** | **list** | **dump xlated** | **du 24 { **show** | **list** | **dump xlated** | **dump jited** | **pin** | **load** |
25 **loadall** | **help** } 25 **loadall** | **help** }
26 26
27 PROG COMMANDS 27 PROG COMMANDS
28 ============= 28 =============
29 29
30 | **bpftool** **prog** { **show** | **list** } 30 | **bpftool** **prog** { **show** | **list** } [*PROG*]
31 | **bpftool** **prog dump xlated** *PROG* [{ * 31 | **bpftool** **prog dump xlated** *PROG* [{ **file** *FILE* | [**opcodes**] [**linum**] [**visual**] }]
32 | **bpftool** **prog dump jited** *PROG* [{ * 32 | **bpftool** **prog dump jited** *PROG* [{ **file** *FILE* | [**opcodes**] [**linum**] }]
33 | **bpftool** **prog pin** *PROG* *FILE* 33 | **bpftool** **prog pin** *PROG* *FILE*
34 | **bpftool** **prog** { **load** | **loadall* 34 | **bpftool** **prog** { **load** | **loadall** } *OBJ* *PATH* [**type** *TYPE*] [**map** { **idx** *IDX* | **name** *NAME* } *MAP*] [{ **offload_dev** | **xdpmeta_dev** } *NAME*] [**pinmaps** *MAP_DIR*] [**autoattach**]
35 | **bpftool** **prog attach** *PROG* *ATTACH_T 35 | **bpftool** **prog attach** *PROG* *ATTACH_TYPE* [*MAP*]
36 | **bpftool** **prog detach** *PROG* *ATTACH_T 36 | **bpftool** **prog detach** *PROG* *ATTACH_TYPE* [*MAP*]
37 | **bpftool** **prog tracelog** 37 | **bpftool** **prog tracelog**
38 | **bpftool** **prog run** *PROG* **data_in** 38 | **bpftool** **prog run** *PROG* **data_in** *FILE* [**data_out** *FILE* [**data_size_out** *L*]] [**ctx_in** *FILE* [**ctx_out** *FILE* [**ctx_size_out** *M*]]] [**repeat** *N*]
39 | **bpftool** **prog profile** *PROG* [**durat 39 | **bpftool** **prog profile** *PROG* [**duration** *DURATION*] *METRICs*
40 | **bpftool** **prog help** 40 | **bpftool** **prog help**
41 | 41 |
42 | *MAP* := { **id** *MAP_ID* | **pinned** *FIL 42 | *MAP* := { **id** *MAP_ID* | **pinned** *FILE* | **name** *MAP_NAME* }
43 | *PROG* := { **id** *PROG_ID* | **pinned** *F 43 | *PROG* := { **id** *PROG_ID* | **pinned** *FILE* | **tag** *PROG_TAG* | **name** *PROG_NAME* }
44 | *TYPE* := { 44 | *TYPE* := {
45 | **socket** | **kprobe** | **kretprobe** 45 | **socket** | **kprobe** | **kretprobe** | **classifier** | **action** |
46 | **tracepoint** | **raw_tracepoint** | ** 46 | **tracepoint** | **raw_tracepoint** | **xdp** | **perf_event** | **cgroup/skb** |
47 | **cgroup/sock** | **cgroup/dev** | **lwt 47 | **cgroup/sock** | **cgroup/dev** | **lwt_in** | **lwt_out** | **lwt_xmit** |
48 | **lwt_seg6local** | **sockops** | **sk_s 48 | **lwt_seg6local** | **sockops** | **sk_skb** | **sk_msg** | **lirc_mode2** |
49 | **cgroup/bind4** | **cgroup/bind6** | ** 49 | **cgroup/bind4** | **cgroup/bind6** | **cgroup/post_bind4** | **cgroup/post_bind6** |
50 | **cgroup/connect4** | **cgroup/connect6* 50 | **cgroup/connect4** | **cgroup/connect6** | **cgroup/connect_unix** |
51 | **cgroup/getpeername4** | **cgroup/getpe 51 | **cgroup/getpeername4** | **cgroup/getpeername6** | **cgroup/getpeername_unix** |
52 | **cgroup/getsockname4** | **cgroup/getso 52 | **cgroup/getsockname4** | **cgroup/getsockname6** | **cgroup/getsockname_unix** |
53 | **cgroup/sendmsg4** | **cgroup/sendmsg6* 53 | **cgroup/sendmsg4** | **cgroup/sendmsg6** | **cgroup/sendmsg_unix** |
54 | **cgroup/recvmsg4** | **cgroup/recvmsg6* 54 | **cgroup/recvmsg4** | **cgroup/recvmsg6** | **cgroup/recvmsg_unix** | **cgroup/sysctl** |
55 | **cgroup/getsockopt** | **cgroup/setsock 55 | **cgroup/getsockopt** | **cgroup/setsockopt** | **cgroup/sock_release** |
56 | **struct_ops** | **fentry** | **fexit** 56 | **struct_ops** | **fentry** | **fexit** | **freplace** | **sk_lookup**
57 | } 57 | }
58 | *ATTACH_TYPE* := { 58 | *ATTACH_TYPE* := {
59 | **sk_msg_verdict** | **sk_skb_verdict** 59 | **sk_msg_verdict** | **sk_skb_verdict** | **sk_skb_stream_verdict** |
60 | **sk_skb_stream_parser** | **flow_dissec 60 | **sk_skb_stream_parser** | **flow_dissector**
61 | } 61 | }
62 | *METRICs* := { 62 | *METRICs* := {
63 | **cycles** | **instructions** | **l1d_lo 63 | **cycles** | **instructions** | **l1d_loads** | **llc_misses** |
64 | **itlb_misses** | **dtlb_misses** 64 | **itlb_misses** | **dtlb_misses**
65 | } 65 | }
66 66
67 67
68 DESCRIPTION 68 DESCRIPTION
69 =========== 69 ===========
70 bpftool prog { show | list } [*PROG*] 70 bpftool prog { show | list } [*PROG*]
71 Show information about loaded programs. I 71 Show information about loaded programs. If *PROG* is specified show
72 information only about given programs, oth 72 information only about given programs, otherwise list all programs
73 currently loaded on the system. In case of 73 currently loaded on the system. In case of **tag** or **name**, *PROG* may
74 match several programs which will all be s 74 match several programs which will all be shown.
75 75
76 Output will start with program ID followed 76 Output will start with program ID followed by program type and zero or more
77 named attributes (depending on kernel vers 77 named attributes (depending on kernel version).
78 78
79 Since Linux 5.1 the kernel can collect sta 79 Since Linux 5.1 the kernel can collect statistics on BPF programs (such as
80 the total time spent running the program, 80 the total time spent running the program, and the number of times it was
81 run). If available, bpftool shows such sta 81 run). If available, bpftool shows such statistics. However, the kernel does
82 not collect them by defaults, as it slight 82 not collect them by defaults, as it slightly impacts performance on each
83 program run. Activation or deactivation of 83 program run. Activation or deactivation of the feature is performed via the
84 **kernel.bpf_stats_enabled** sysctl knob. 84 **kernel.bpf_stats_enabled** sysctl knob.
85 85
86 Since Linux 5.8 bpftool is able to discove 86 Since Linux 5.8 bpftool is able to discover information about processes
87 that hold open file descriptors (FDs) agai 87 that hold open file descriptors (FDs) against BPF programs. On such kernels
88 bpftool will automatically emit this infor 88 bpftool will automatically emit this information as well.
89 89
90 bpftool prog dump xlated *PROG* [{ file *FILE* 90 bpftool prog dump xlated *PROG* [{ file *FILE* | [opcodes] [linum] [visual] }]
91 Dump eBPF instructions of the programs fro 91 Dump eBPF instructions of the programs from the kernel. By default, eBPF
92 will be disassembled and printed to standa 92 will be disassembled and printed to standard output in human-readable
93 format. In this case, **opcodes** controls 93 format. In this case, **opcodes** controls if raw opcodes should be printed
94 as well. 94 as well.
95 95
96 In case of **tag** or **name**, *PROG* may 96 In case of **tag** or **name**, *PROG* may match several programs which
97 will all be dumped. However, if **file** 97 will all be dumped. However, if **file** or **visual** is specified,
98 *PROG* must match a single program. 98 *PROG* must match a single program.
99 99
100 If **file** is specified, the binary image 100 If **file** is specified, the binary image will instead be written to
101 *FILE*. 101 *FILE*.
102 102
103 If **visual** is specified, control flow g 103 If **visual** is specified, control flow graph (CFG) will be built instead,
104 and eBPF instructions will be presented wi 104 and eBPF instructions will be presented with CFG in DOT format, on standard
105 output. 105 output.
106 106
107 If the programs have line_info available, 107 If the programs have line_info available, the source line will be
108 displayed. If **linum** is specified, the 108 displayed. If **linum** is specified, the filename, line number and line
109 column will also be displayed. 109 column will also be displayed.
110 110
111 bpftool prog dump jited *PROG* [{ file *FILE* 111 bpftool prog dump jited *PROG* [{ file *FILE* | [opcodes] [linum] }]
112 Dump jited image (host machine code) of th 112 Dump jited image (host machine code) of the program.
113 113
114 If *FILE* is specified image will be writt 114 If *FILE* is specified image will be written to a file, otherwise it will
115 be disassembled and printed to stdout. *PR 115 be disassembled and printed to stdout. *PROG* must match a single program
116 when **file** is specified. 116 when **file** is specified.
117 117
118 **opcodes** controls if raw opcodes will b 118 **opcodes** controls if raw opcodes will be printed.
119 119
120 If the prog has line_info available, the s 120 If the prog has line_info available, the source line will be displayed. If
121 **linum** is specified, the filename, line 121 **linum** is specified, the filename, line number and line column will also
122 be displayed. 122 be displayed.
123 123
124 bpftool prog pin *PROG* *FILE* 124 bpftool prog pin *PROG* *FILE*
125 Pin program *PROG* as *FILE*. 125 Pin program *PROG* as *FILE*.
126 126
127 Note: *FILE* must be located in *bpffs* mo 127 Note: *FILE* must be located in *bpffs* mount. It must not contain a dot
128 character ('.'), which is reserved for fut 128 character ('.'), which is reserved for future extensions of *bpffs*.
129 129
130 bpftool prog { load | loadall } *OBJ* *PATH* [ 130 bpftool prog { load | loadall } *OBJ* *PATH* [type *TYPE*] [map { idx *IDX* | name *NAME* } *MAP*] [{ offload_dev | xdpmeta_dev } *NAME*] [pinmaps *MAP_DIR*] [autoattach]
131 Load bpf program(s) from binary *OBJ* and 131 Load bpf program(s) from binary *OBJ* and pin as *PATH*. **bpftool prog
132 load** pins only the first program from th 132 load** pins only the first program from the *OBJ* as *PATH*. **bpftool prog
133 loadall** pins all programs from the *OBJ* 133 loadall** pins all programs from the *OBJ* under *PATH* directory. **type**
134 is optional, if not specified program type 134 is optional, if not specified program type will be inferred from section
135 names. By default bpftool will create new 135 names. By default bpftool will create new maps as declared in the ELF
136 object being loaded. **map** parameter al 136 object being loaded. **map** parameter allows for the reuse of existing
137 maps. It can be specified multiple times, 137 maps. It can be specified multiple times, each time for a different map.
138 *IDX* refers to index of the map to be rep 138 *IDX* refers to index of the map to be replaced in the ELF file counting
139 from 0, while *NAME* allows to replace a m 139 from 0, while *NAME* allows to replace a map by name. *MAP* specifies the
140 map to use, referring to it by **id** or t 140 map to use, referring to it by **id** or through a **pinned** file. If
141 **offload_dev** *NAME* is specified progra 141 **offload_dev** *NAME* is specified program will be loaded onto given
142 networking device (offload). If **xdpmeta_ 142 networking device (offload). If **xdpmeta_dev** *NAME* is specified program
143 will become device-bound without offloadin 143 will become device-bound without offloading, this facilitates access to XDP
144 metadata. Optional **pinmaps** argument ca 144 metadata. Optional **pinmaps** argument can be provided to pin all maps
145 under *MAP_DIR* directory. 145 under *MAP_DIR* directory.
146 146
147 If **autoattach** is specified program wil 147 If **autoattach** is specified program will be attached before pin. In that
148 case, only the link (representing the prog 148 case, only the link (representing the program attached to its hook) is
149 pinned, not the program as such, so the pa 149 pinned, not the program as such, so the path won't show in **bpftool prog
150 show -f**, only show in **bpftool link sho 150 show -f**, only show in **bpftool link show -f**. Also, this only works
151 when bpftool (libbpf) is able to infer all 151 when bpftool (libbpf) is able to infer all necessary information from the
152 object file, in particular, it's not suppo 152 object file, in particular, it's not supported for all program types. If a
153 program does not support autoattach, bpfto 153 program does not support autoattach, bpftool falls back to regular pinning
154 for that program instead. 154 for that program instead.
155 155
156 Note: *PATH* must be located in *bpffs* mo 156 Note: *PATH* must be located in *bpffs* mount. It must not contain a dot
157 character ('.'), which is reserved for fut 157 character ('.'), which is reserved for future extensions of *bpffs*.
158 158
159 bpftool prog attach *PROG* *ATTACH_TYPE* [*MAP 159 bpftool prog attach *PROG* *ATTACH_TYPE* [*MAP*]
160 Attach bpf program *PROG* (with type speci 160 Attach bpf program *PROG* (with type specified by *ATTACH_TYPE*). Most
161 *ATTACH_TYPEs* require a *MAP* parameter, 161 *ATTACH_TYPEs* require a *MAP* parameter, with the exception of
162 *flow_dissector* which is attached to curr 162 *flow_dissector* which is attached to current networking name space.
163 163
164 bpftool prog detach *PROG* *ATTACH_TYPE* [*MAP 164 bpftool prog detach *PROG* *ATTACH_TYPE* [*MAP*]
165 Detach bpf program *PROG* (with type speci 165 Detach bpf program *PROG* (with type specified by *ATTACH_TYPE*). Most
166 *ATTACH_TYPEs* require a *MAP* parameter, 166 *ATTACH_TYPEs* require a *MAP* parameter, with the exception of
167 *flow_dissector* which is detached from th 167 *flow_dissector* which is detached from the current networking name space.
168 168
169 bpftool prog tracelog 169 bpftool prog tracelog
170 Dump the trace pipe of the system to the c 170 Dump the trace pipe of the system to the console (stdout). Hit <Ctrl+C> to
171 stop printing. BPF programs can write to t 171 stop printing. BPF programs can write to this trace pipe at runtime with
172 the **bpf_trace_printk**\ () helper. This 172 the **bpf_trace_printk**\ () helper. This should be used only for debugging
173 purposes. For streaming data from BPF prog 173 purposes. For streaming data from BPF programs to user space, one can use
174 perf events (see also **bpftool-map**\ (8) 174 perf events (see also **bpftool-map**\ (8)).
175 175
176 bpftool prog run *PROG* data_in *FILE* [data_o 176 bpftool prog run *PROG* data_in *FILE* [data_out *FILE* [data_size_out *L*]] [ctx_in *FILE* [ctx_out *FILE* [ctx_size_out *M*]]] [repeat *N*]
177 Run BPF program *PROG* in the kernel testi 177 Run BPF program *PROG* in the kernel testing infrastructure for BPF,
178 meaning that the program works on the data 178 meaning that the program works on the data and context provided by the
179 user, and not on actual packets or monitor 179 user, and not on actual packets or monitored functions etc. Return value
180 and duration for the test run are printed 180 and duration for the test run are printed out to the console.
181 181
182 Input data is read from the *FILE* passed 182 Input data is read from the *FILE* passed with **data_in**. If this *FILE*
183 is "**-**", input data is read from standa 183 is "**-**", input data is read from standard input. Input context, if any,
184 is read from *FILE* passed with **ctx_in** 184 is read from *FILE* passed with **ctx_in**. Again, "**-**" can be used to
185 read from standard input, but only if stan 185 read from standard input, but only if standard input is not already in use
186 for input data. If a *FILE* is passed with 186 for input data. If a *FILE* is passed with **data_out**, output data is
187 written to that file. Similarly, output co 187 written to that file. Similarly, output context is written to the *FILE*
188 passed with **ctx_out**. For both output f 188 passed with **ctx_out**. For both output flows, "**-**" can be used to
189 print to the standard output (as plain tex 189 print to the standard output (as plain text, or JSON if relevant option was
190 passed). If output keywords are omitted, o 190 passed). If output keywords are omitted, output data and context are
191 discarded. Keywords **data_size_out** and 191 discarded. Keywords **data_size_out** and **ctx_size_out** are used to pass
192 the size (in bytes) for the output buffers 192 the size (in bytes) for the output buffers to the kernel, although the
193 default of 32 kB should be more than enoug 193 default of 32 kB should be more than enough for most cases.
194 194
195 Keyword **repeat** is used to indicate the 195 Keyword **repeat** is used to indicate the number of consecutive runs to
196 perform. Note that output data and context 196 perform. Note that output data and context printed to files correspond to
197 the last of those runs. The duration print 197 the last of those runs. The duration printed out at the end of the runs is
198 an average over all runs performed by the 198 an average over all runs performed by the command.
199 199
200 Not all program types support test run. Am 200 Not all program types support test run. Among those which do, not all of
201 them can take the **ctx_in**/**ctx_out** a 201 them can take the **ctx_in**/**ctx_out** arguments. bpftool does not
202 perform checks on program types. 202 perform checks on program types.
203 203
204 bpftool prog profile *PROG* [duration *DURATIO 204 bpftool prog profile *PROG* [duration *DURATION*] *METRICs*
205 Profile *METRICs* for bpf program *PROG* f 205 Profile *METRICs* for bpf program *PROG* for *DURATION* seconds or until
206 user hits <Ctrl+C>. *DURATION* is optional 206 user hits <Ctrl+C>. *DURATION* is optional. If *DURATION* is not specified,
207 the profiling will run up to **UINT_MAX** 207 the profiling will run up to **UINT_MAX** seconds.
208 208
209 bpftool prog help 209 bpftool prog help
210 Print short help message. 210 Print short help message.
211 211
212 OPTIONS 212 OPTIONS
213 ======= 213 =======
214 .. include:: common_options.rst 214 .. include:: common_options.rst
215 215
216 -f, --bpffs 216 -f, --bpffs
217 When showing BPF programs, show file names 217 When showing BPF programs, show file names of pinned programs.
218 218
219 -m, --mapcompat 219 -m, --mapcompat
220 Allow loading maps with unknown map defini 220 Allow loading maps with unknown map definitions.
221 221
222 -n, --nomount 222 -n, --nomount
223 Do not automatically attempt to mount any 223 Do not automatically attempt to mount any virtual file system (such as
224 tracefs or BPF virtual file system) when n 224 tracefs or BPF virtual file system) when necessary.
225 225
226 -L, --use-loader 226 -L, --use-loader
227 Load program as a "loader" program. This i 227 Load program as a "loader" program. This is useful to debug the generation
228 of such programs. When this option is in u 228 of such programs. When this option is in use, bpftool attempts to load the
229 programs from the object file into the ker 229 programs from the object file into the kernel, but does not pin them
230 (therefore, the *PATH* must not be provide 230 (therefore, the *PATH* must not be provided).
231 231
232 When combined with the **-d**\ \|\ **--deb 232 When combined with the **-d**\ \|\ **--debug** option, additional debug
233 messages are generated, and the execution 233 messages are generated, and the execution of the loader program will use
234 the **bpf_trace_printk**\ () helper to log 234 the **bpf_trace_printk**\ () helper to log each step of loading BTF,
235 creating the maps, and loading the program 235 creating the maps, and loading the programs (see **bpftool prog tracelog**
236 as a way to dump those messages). 236 as a way to dump those messages).
237 237
238 EXAMPLES 238 EXAMPLES
239 ======== 239 ========
240 **# bpftool prog show** 240 **# bpftool prog show**
241 241
242 :: 242 ::
243 243
244 10: xdp name some_prog tag 005a3d2123620 244 10: xdp name some_prog tag 005a3d2123620c8b gpl run_time_ns 81632 run_cnt 10
245 loaded_at 2017-09-29T20:11:00+0000 245 loaded_at 2017-09-29T20:11:00+0000 uid 0
246 xlated 528B jited 370B memlock 4 246 xlated 528B jited 370B memlock 4096B map_ids 10
247 pids systemd(1) 247 pids systemd(1)
248 248
249 **# bpftool --json --pretty prog show** 249 **# bpftool --json --pretty prog show**
250 250
251 :: 251 ::
252 252
253 [{ 253 [{
254 "id": 10, 254 "id": 10,
255 "type": "xdp", 255 "type": "xdp",
256 "tag": "005a3d2123620c8b", 256 "tag": "005a3d2123620c8b",
257 "gpl_compatible": true, 257 "gpl_compatible": true,
258 "run_time_ns": 81632, 258 "run_time_ns": 81632,
259 "run_cnt": 10, 259 "run_cnt": 10,
260 "loaded_at": 1506715860, 260 "loaded_at": 1506715860,
261 "uid": 0, 261 "uid": 0,
262 "bytes_xlated": 528, 262 "bytes_xlated": 528,
263 "jited": true, 263 "jited": true,
264 "bytes_jited": 370, 264 "bytes_jited": 370,
265 "bytes_memlock": 4096, 265 "bytes_memlock": 4096,
266 "map_ids": [10 266 "map_ids": [10
267 ], 267 ],
268 "pids": [{ 268 "pids": [{
269 "pid": 1, 269 "pid": 1,
270 "comm": "systemd" 270 "comm": "systemd"
271 } 271 }
272 ] 272 ]
273 } 273 }
274 ] 274 ]
275 275
276 | 276 |
277 | **# bpftool prog dump xlated id 10 file /tmp 277 | **# bpftool prog dump xlated id 10 file /tmp/t**
278 | **$ ls -l /tmp/t** 278 | **$ ls -l /tmp/t**
279 279
280 :: 280 ::
281 281
282 -rw------- 1 root root 560 Jul 22 01:42 /t 282 -rw------- 1 root root 560 Jul 22 01:42 /tmp/t
283 283
284 **# bpftool prog dump jited tag 005a3d2123620c 284 **# bpftool prog dump jited tag 005a3d2123620c8b**
285 285
286 :: 286 ::
287 287
288 0: push %rbp 288 0: push %rbp
289 1: mov %rsp,%rbp 289 1: mov %rsp,%rbp
290 2: sub $0x228,%rsp 290 2: sub $0x228,%rsp
291 3: sub $0x28,%rbp 291 3: sub $0x28,%rbp
292 4: mov %rbx,0x0(%rbp) 292 4: mov %rbx,0x0(%rbp)
293 293
294 | 294 |
295 | **# mount -t bpf none /sys/fs/bpf/** 295 | **# mount -t bpf none /sys/fs/bpf/**
296 | **# bpftool prog pin id 10 /sys/fs/bpf/prog* 296 | **# bpftool prog pin id 10 /sys/fs/bpf/prog**
297 | **# bpftool prog load ./my_prog.o /sys/fs/bp 297 | **# bpftool prog load ./my_prog.o /sys/fs/bpf/prog2**
298 | **# ls -l /sys/fs/bpf/** 298 | **# ls -l /sys/fs/bpf/**
299 299
300 :: 300 ::
301 301
302 -rw------- 1 root root 0 Jul 22 01:43 prog 302 -rw------- 1 root root 0 Jul 22 01:43 prog
303 -rw------- 1 root root 0 Jul 22 01:44 prog 303 -rw------- 1 root root 0 Jul 22 01:44 prog2
304 304
305 **# bpftool prog dump jited pinned /sys/fs/bpf 305 **# bpftool prog dump jited pinned /sys/fs/bpf/prog opcodes**
306 306
307 :: 307 ::
308 308
309 0: push %rbp 309 0: push %rbp
310 55 310 55
311 1: mov %rsp,%rbp 311 1: mov %rsp,%rbp
312 48 89 e5 312 48 89 e5
313 4: sub $0x228,%rsp 313 4: sub $0x228,%rsp
314 48 81 ec 28 02 00 00 314 48 81 ec 28 02 00 00
315 b: sub $0x28,%rbp 315 b: sub $0x28,%rbp
316 48 83 ed 28 316 48 83 ed 28
317 f: mov %rbx,0x0(%rbp) 317 f: mov %rbx,0x0(%rbp)
318 48 89 5d 00 318 48 89 5d 00
319 319
320 | 320 |
321 | **# bpftool prog load xdp1_kern.o /sys/fs/bp 321 | **# bpftool prog load xdp1_kern.o /sys/fs/bpf/xdp1 type xdp map name rxcnt id 7**
322 | **# bpftool prog show pinned /sys/fs/bpf/xdp 322 | **# bpftool prog show pinned /sys/fs/bpf/xdp1**
323 323
324 :: 324 ::
325 325
326 9: xdp name xdp_prog1 tag 539ec6ce11b52f 326 9: xdp name xdp_prog1 tag 539ec6ce11b52f98 gpl
327 loaded_at 2018-06-25T16:17:31-0700 327 loaded_at 2018-06-25T16:17:31-0700 uid 0
328 xlated 488B jited 336B memlock 4 328 xlated 488B jited 336B memlock 4096B map_ids 7
329 329
330 **# rm /sys/fs/bpf/xdp1** 330 **# rm /sys/fs/bpf/xdp1**
331 331
332 | 332 |
333 | **# bpftool prog profile id 337 duration 10 333 | **# bpftool prog profile id 337 duration 10 cycles instructions llc_misses**
334 334
335 :: 335 ::
336 336
337 51397 run_cnt 337 51397 run_cnt
338 40176203 cycles 338 40176203 cycles (83.05%)
339 42518139 instructions # 1.06 insns 339 42518139 instructions # 1.06 insns per cycle (83.39%)
340 123 llc_misses # 2.89 LLC mi 340 123 llc_misses # 2.89 LLC misses per million insns (83.15%)
341 341
342 | 342 |
343 | Output below is for the trace logs. 343 | Output below is for the trace logs.
344 | Run in separate terminals: 344 | Run in separate terminals:
345 | **# bpftool prog tracelog** 345 | **# bpftool prog tracelog**
346 | **# bpftool prog load -L -d file.o** 346 | **# bpftool prog load -L -d file.o**
347 347
348 :: 348 ::
349 349
350 bpftool-620059 [004] d... 2634685.517903: 350 bpftool-620059 [004] d... 2634685.517903: bpf_trace_printk: btf_load size 665 r=5
351 bpftool-620059 [004] d... 2634685.517912: 351 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
352 bpftool-620059 [004] d... 2634685.517997: 352 bpftool-620059 [004] d... 2634685.517997: bpf_trace_printk: prog_load sample insn_cnt 13 r=7
353 bpftool-620059 [004] d... 2634685.517999: 353 bpftool-620059 [004] d... 2634685.517999: bpf_trace_printk: close(5) = 0
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