1 .. SPDX-License-Identifier: (GPL-2.0-only OR B <<
2 <<
3 ================ 1 ================
4 bpftool-prog 2 bpftool-prog
5 ================ 3 ================
6 ---------------------------------------------- 4 -------------------------------------------------------------------------------
7 tool for inspection and simple manipulation of 5 tool for inspection and simple manipulation of eBPF progs
8 ---------------------------------------------- 6 -------------------------------------------------------------------------------
9 7
10 :Manual section: 8 8 :Manual section: 8
11 9
12 .. include:: substitutions.rst <<
13 <<
14 SYNOPSIS 10 SYNOPSIS
15 ======== 11 ========
16 12
17 **bpftool** [*OPTIONS*] **prog** *COMMAND* !! 13 **bpftool** [*OPTIONS*] **prog** *COMMAND*
>> 14
>> 15 *OPTIONS* := { { **-j** | **--json** } [{ **-p** | **--pretty** }] | { **-f** | **--bpffs** } }
18 16
19 *OPTIONS* := { |COMMON_OPTIONS| | !! 17 *COMMANDS* :=
20 { **-f** | **--bpffs** } | { **-m** | **--mapc !! 18 { **show** | **list** | **dump xlated** | **dump jited** | **pin** | **load**
21 { **-L** | **--use-loader** } } !! 19 | **loadall** | **help** }
22 <<
23 *COMMANDS* := <<
24 { **show** | **list** | **dump xlated** | **du <<
25 **loadall** | **help** } <<
26 20
27 PROG COMMANDS 21 PROG COMMANDS
28 ============= 22 =============
29 23
30 | **bpftool** **prog** { **show** | **list** } !! 24 | **bpftool** **prog** { **show** | **list** } [*PROG*]
31 | **bpftool** **prog dump xlated** *PROG* [{ * !! 25 | **bpftool** **prog dump xlated** *PROG* [{**file** *FILE* | **opcodes** | **visual** | **linum**}]
32 | **bpftool** **prog dump jited** *PROG* [{ * !! 26 | **bpftool** **prog dump jited** *PROG* [{**file** *FILE* | **opcodes** | **linum**}]
33 | **bpftool** **prog pin** *PROG* *FILE* !! 27 | **bpftool** **prog pin** *PROG* *FILE*
34 | **bpftool** **prog** { **load** | **loadall* !! 28 | **bpftool** **prog** { **load** | **loadall** } *OBJ* *PATH* [**type** *TYPE*] [**map** {**idx** *IDX* | **name** *NAME*} *MAP*] [**dev** *NAME*] [**pinmaps** *MAP_DIR*]
35 | **bpftool** **prog attach** *PROG* *ATTACH_T !! 29 | **bpftool** **prog attach** *PROG* *ATTACH_TYPE* [*MAP*]
36 | **bpftool** **prog detach** *PROG* *ATTACH_T !! 30 | **bpftool** **prog detach** *PROG* *ATTACH_TYPE* [*MAP*]
37 | **bpftool** **prog tracelog** !! 31 | **bpftool** **prog tracelog**
38 | **bpftool** **prog run** *PROG* **data_in** !! 32 | **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 !! 33 | **bpftool** **prog profile** *PROG* [**duration** *DURATION*] *METRICs*
40 | **bpftool** **prog help** !! 34 | **bpftool** **prog help**
41 | 35 |
42 | *MAP* := { **id** *MAP_ID* | **pinned** *FIL !! 36 | *MAP* := { **id** *MAP_ID* | **pinned** *FILE* }
43 | *PROG* := { **id** *PROG_ID* | **pinned** *F !! 37 | *PROG* := { **id** *PROG_ID* | **pinned** *FILE* | **tag** *PROG_TAG* | **name** *PROG_NAME* }
44 | *TYPE* := { !! 38 | *TYPE* := {
45 | **socket** | **kprobe** | **kretprobe** !! 39 | **socket** | **kprobe** | **kretprobe** | **classifier** | **action** |
46 | **tracepoint** | **raw_tracepoint** | ** !! 40 | **tracepoint** | **raw_tracepoint** | **xdp** | **perf_event** | **cgroup/skb** |
47 | **cgroup/sock** | **cgroup/dev** | **lwt !! 41 | **cgroup/sock** | **cgroup/dev** | **lwt_in** | **lwt_out** | **lwt_xmit** |
48 | **lwt_seg6local** | **sockops** | **sk_s !! 42 | **lwt_seg6local** | **sockops** | **sk_skb** | **sk_msg** | **lirc_mode2** |
49 | **cgroup/bind4** | **cgroup/bind6** | ** !! 43 | **cgroup/bind4** | **cgroup/bind6** | **cgroup/post_bind4** | **cgroup/post_bind6** |
50 | **cgroup/connect4** | **cgroup/connect6* !! 44 | **cgroup/connect4** | **cgroup/connect6** | **cgroup/getpeername4** | **cgroup/getpeername6** |
51 | **cgroup/getpeername4** | **cgroup/getpe !! 45 | **cgroup/getsockname4** | **cgroup/getsockname6** | **cgroup/sendmsg4** | **cgroup/sendmsg6** |
52 | **cgroup/getsockname4** | **cgroup/getso !! 46 | **cgroup/recvmsg4** | **cgroup/recvmsg6** | **cgroup/sysctl** |
53 | **cgroup/sendmsg4** | **cgroup/sendmsg6* !! 47 | **cgroup/getsockopt** | **cgroup/setsockopt** |
54 | **cgroup/recvmsg4** | **cgroup/recvmsg6* !! 48 | **struct_ops** | **fentry** | **fexit** | **freplace** | **sk_lookup**
55 | **cgroup/getsockopt** | **cgroup/setsock !! 49 | }
56 | **struct_ops** | **fentry** | **fexit** !! 50 | *ATTACH_TYPE* := {
57 | } !! 51 | **msg_verdict** | **stream_verdict** | **stream_parser** | **flow_dissector**
58 | *ATTACH_TYPE* := { !! 52 | }
59 | **sk_msg_verdict** | **sk_skb_verdict** !! 53 | *METRICs* := {
60 | **sk_skb_stream_parser** | **flow_dissec !! 54 | **cycles** | **instructions** | **l1d_loads** | **llc_misses**
61 | } !! 55 | }
62 | *METRICs* := { <<
63 | **cycles** | **instructions** | **l1d_lo <<
64 | **itlb_misses** | **dtlb_misses** <<
65 | } <<
66 56
67 57
68 DESCRIPTION 58 DESCRIPTION
69 =========== 59 ===========
70 bpftool prog { show | list } [*PROG*] !! 60 **bpftool prog { show | list }** [*PROG*]
71 Show information about loaded programs. I !! 61 Show information about loaded programs. If *PROG* is
72 information only about given programs, oth !! 62 specified show information only about given programs,
73 currently loaded on the system. In case of !! 63 otherwise list all programs currently loaded on the system.
74 match several programs which will all be s !! 64 In case of **tag** or **name**, *PROG* may match several
75 !! 65 programs which will all be shown.
76 Output will start with program ID followed !! 66
77 named attributes (depending on kernel vers !! 67 Output will start with program ID followed by program type and
78 !! 68 zero or more named attributes (depending on kernel version).
79 Since Linux 5.1 the kernel can collect sta !! 69
80 the total time spent running the program, !! 70 Since Linux 5.1 the kernel can collect statistics on BPF
81 run). If available, bpftool shows such sta !! 71 programs (such as the total time spent running the program,
82 not collect them by defaults, as it slight !! 72 and the number of times it was run). If available, bpftool
83 program run. Activation or deactivation of !! 73 shows such statistics. However, the kernel does not collect
84 **kernel.bpf_stats_enabled** sysctl knob. !! 74 them by defaults, as it slightly impacts performance on each
85 !! 75 program run. Activation or deactivation of the feature is
86 Since Linux 5.8 bpftool is able to discove !! 76 performed via the **kernel.bpf_stats_enabled** sysctl knob.
87 that hold open file descriptors (FDs) agai !! 77
88 bpftool will automatically emit this infor !! 78 Since Linux 5.8 bpftool is able to discover information about
89 !! 79 processes that hold open file descriptors (FDs) against BPF
90 bpftool prog dump xlated *PROG* [{ file *FILE* !! 80 programs. On such kernels bpftool will automatically emit this
91 Dump eBPF instructions of the programs fro !! 81 information as well.
92 will be disassembled and printed to standa !! 82
93 format. In this case, **opcodes** controls !! 83 **bpftool prog dump xlated** *PROG* [{ **file** *FILE* | **opcodes** | **visual** | **linum** }]
94 as well. !! 84 Dump eBPF instructions of the programs from the kernel. By
95 !! 85 default, eBPF will be disassembled and printed to standard
96 In case of **tag** or **name**, *PROG* may !! 86 output in human-readable format. In this case, **opcodes**
97 will all be dumped. However, if **file** !! 87 controls if raw opcodes should be printed as well.
98 *PROG* must match a single program. !! 88
99 !! 89 In case of **tag** or **name**, *PROG* may match several
100 If **file** is specified, the binary image !! 90 programs which will all be dumped. However, if **file** or
101 *FILE*. !! 91 **visual** is specified, *PROG* must match a single program.
102 !! 92
103 If **visual** is specified, control flow g !! 93 If **file** is specified, the binary image will instead be
104 and eBPF instructions will be presented wi !! 94 written to *FILE*.
105 output. !! 95
106 !! 96 If **visual** is specified, control flow graph (CFG) will be
107 If the programs have line_info available, !! 97 built instead, and eBPF instructions will be presented with
108 displayed. If **linum** is specified, the !! 98 CFG in DOT format, on standard output.
109 column will also be displayed. !! 99
110 !! 100 If the programs have line_info available, the source line will
111 bpftool prog dump jited *PROG* [{ file *FILE* !! 101 be displayed by default. If **linum** is specified,
112 Dump jited image (host machine code) of th !! 102 the filename, line number and line column will also be
113 !! 103 displayed on top of the source line.
114 If *FILE* is specified image will be writt !! 104
115 be disassembled and printed to stdout. *PR !! 105 **bpftool prog dump jited** *PROG* [{ **file** *FILE* | **opcodes** | **linum** }]
116 when **file** is specified. !! 106 Dump jited image (host machine code) of the program.
117 !! 107
118 **opcodes** controls if raw opcodes will b !! 108 If *FILE* is specified image will be written to a file,
119 !! 109 otherwise it will be disassembled and printed to stdout.
120 If the prog has line_info available, the s !! 110 *PROG* must match a single program when **file** is specified.
121 **linum** is specified, the filename, line !! 111
122 be displayed. !! 112 **opcodes** controls if raw opcodes will be printed.
123 !! 113
124 bpftool prog pin *PROG* *FILE* !! 114 If the prog has line_info available, the source line will
125 Pin program *PROG* as *FILE*. !! 115 be displayed by default. If **linum** is specified,
126 !! 116 the filename, line number and line column will also be
127 Note: *FILE* must be located in *bpffs* mo !! 117 displayed on top of the source line.
128 character ('.'), which is reserved for fut !! 118
129 !! 119 **bpftool prog pin** *PROG* *FILE*
130 bpftool prog { load | loadall } *OBJ* *PATH* [ !! 120 Pin program *PROG* as *FILE*.
131 Load bpf program(s) from binary *OBJ* and !! 121
132 load** pins only the first program from th !! 122 Note: *FILE* must be located in *bpffs* mount. It must not
133 loadall** pins all programs from the *OBJ* !! 123 contain a dot character ('.'), which is reserved for future
134 is optional, if not specified program type !! 124 extensions of *bpffs*.
135 names. By default bpftool will create new !! 125
136 object being loaded. **map** parameter al !! 126 **bpftool prog { load | loadall }** *OBJ* *PATH* [**type** *TYPE*] [**map** {**idx** *IDX* | **name** *NAME*} *MAP*] [**dev** *NAME*] [**pinmaps** *MAP_DIR*]
137 maps. It can be specified multiple times, !! 127 Load bpf program(s) from binary *OBJ* and pin as *PATH*.
138 *IDX* refers to index of the map to be rep !! 128 **bpftool prog load** pins only the first program from the
139 from 0, while *NAME* allows to replace a m !! 129 *OBJ* as *PATH*. **bpftool prog loadall** pins all programs
140 map to use, referring to it by **id** or t !! 130 from the *OBJ* under *PATH* directory.
141 **offload_dev** *NAME* is specified progra !! 131 **type** is optional, if not specified program type will be
142 networking device (offload). If **xdpmeta_ !! 132 inferred from section names.
143 will become device-bound without offloadin !! 133 By default bpftool will create new maps as declared in the ELF
144 metadata. Optional **pinmaps** argument ca !! 134 object being loaded. **map** parameter allows for the reuse
145 under *MAP_DIR* directory. !! 135 of existing maps. It can be specified multiple times, each
146 !! 136 time for a different map. *IDX* refers to index of the map
147 If **autoattach** is specified program wil !! 137 to be replaced in the ELF file counting from 0, while *NAME*
148 case, only the link (representing the prog !! 138 allows to replace a map by name. *MAP* specifies the map to
149 pinned, not the program as such, so the pa !! 139 use, referring to it by **id** or through a **pinned** file.
150 show -f**, only show in **bpftool link sho !! 140 If **dev** *NAME* is specified program will be loaded onto
151 when bpftool (libbpf) is able to infer all !! 141 given networking device (offload).
152 object file, in particular, it's not suppo !! 142 Optional **pinmaps** argument can be provided to pin all
153 program does not support autoattach, bpfto !! 143 maps under *MAP_DIR* directory.
154 for that program instead. !! 144
155 !! 145 Note: *PATH* must be located in *bpffs* mount. It must not
156 Note: *PATH* must be located in *bpffs* mo !! 146 contain a dot character ('.'), which is reserved for future
157 character ('.'), which is reserved for fut !! 147 extensions of *bpffs*.
158 !! 148
159 bpftool prog attach *PROG* *ATTACH_TYPE* [*MAP !! 149 **bpftool prog attach** *PROG* *ATTACH_TYPE* [*MAP*]
160 Attach bpf program *PROG* (with type speci !! 150 Attach bpf program *PROG* (with type specified by
161 *ATTACH_TYPEs* require a *MAP* parameter, !! 151 *ATTACH_TYPE*). Most *ATTACH_TYPEs* require a *MAP*
162 *flow_dissector* which is attached to curr !! 152 parameter, with the exception of *flow_dissector* which is
163 !! 153 attached to current networking name space.
164 bpftool prog detach *PROG* *ATTACH_TYPE* [*MAP !! 154
165 Detach bpf program *PROG* (with type speci !! 155 **bpftool prog detach** *PROG* *ATTACH_TYPE* [*MAP*]
166 *ATTACH_TYPEs* require a *MAP* parameter, !! 156 Detach bpf program *PROG* (with type specified by
167 *flow_dissector* which is detached from th !! 157 *ATTACH_TYPE*). Most *ATTACH_TYPEs* require a *MAP*
168 !! 158 parameter, with the exception of *flow_dissector* which is
169 bpftool prog tracelog !! 159 detached from the current networking name space.
170 Dump the trace pipe of the system to the c !! 160
171 stop printing. BPF programs can write to t !! 161 **bpftool prog tracelog**
172 the **bpf_trace_printk**\ () helper. This !! 162 Dump the trace pipe of the system to the console (stdout).
173 purposes. For streaming data from BPF prog !! 163 Hit <Ctrl+C> to stop printing. BPF programs can write to this
174 perf events (see also **bpftool-map**\ (8) !! 164 trace pipe at runtime with the **bpf_trace_printk**\ () helper.
175 !! 165 This should be used only for debugging purposes. For
176 bpftool prog run *PROG* data_in *FILE* [data_o !! 166 streaming data from BPF programs to user space, one can use
177 Run BPF program *PROG* in the kernel testi !! 167 perf events (see also **bpftool-map**\ (8)).
178 meaning that the program works on the data !! 168
179 user, and not on actual packets or monitor !! 169 **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*]
180 and duration for the test run are printed !! 170 Run BPF program *PROG* in the kernel testing infrastructure
181 !! 171 for BPF, meaning that the program works on the data and
182 Input data is read from the *FILE* passed !! 172 context provided by the user, and not on actual packets or
183 is "**-**", input data is read from standa !! 173 monitored functions etc. Return value and duration for the
184 is read from *FILE* passed with **ctx_in** !! 174 test run are printed out to the console.
185 read from standard input, but only if stan !! 175
186 for input data. If a *FILE* is passed with !! 176 Input data is read from the *FILE* passed with **data_in**.
187 written to that file. Similarly, output co !! 177 If this *FILE* is "**-**", input data is read from standard
188 passed with **ctx_out**. For both output f !! 178 input. Input context, if any, is read from *FILE* passed with
189 print to the standard output (as plain tex !! 179 **ctx_in**. Again, "**-**" can be used to read from standard
190 passed). If output keywords are omitted, o !! 180 input, but only if standard input is not already in use for
191 discarded. Keywords **data_size_out** and !! 181 input data. If a *FILE* is passed with **data_out**, output
192 the size (in bytes) for the output buffers !! 182 data is written to that file. Similarly, output context is
193 default of 32 kB should be more than enoug !! 183 written to the *FILE* passed with **ctx_out**. For both
194 !! 184 output flows, "**-**" can be used to print to the standard
195 Keyword **repeat** is used to indicate the !! 185 output (as plain text, or JSON if relevant option was
196 perform. Note that output data and context !! 186 passed). If output keywords are omitted, output data and
197 the last of those runs. The duration print !! 187 context are discarded. Keywords **data_size_out** and
198 an average over all runs performed by the !! 188 **ctx_size_out** are used to pass the size (in bytes) for the
199 !! 189 output buffers to the kernel, although the default of 32 kB
200 Not all program types support test run. Am !! 190 should be more than enough for most cases.
201 them can take the **ctx_in**/**ctx_out** a !! 191
202 perform checks on program types. !! 192 Keyword **repeat** is used to indicate the number of
203 !! 193 consecutive runs to perform. Note that output data and
204 bpftool prog profile *PROG* [duration *DURATIO !! 194 context printed to files correspond to the last of those
205 Profile *METRICs* for bpf program *PROG* f !! 195 runs. The duration printed out at the end of the runs is an
206 user hits <Ctrl+C>. *DURATION* is optional !! 196 average over all runs performed by the command.
207 the profiling will run up to **UINT_MAX** !! 197
>> 198 Not all program types support test run. Among those which do,
>> 199 not all of them can take the **ctx_in**/**ctx_out**
>> 200 arguments. bpftool does not perform checks on program types.
>> 201
>> 202 **bpftool prog profile** *PROG* [**duration** *DURATION*] *METRICs*
>> 203 Profile *METRICs* for bpf program *PROG* for *DURATION*
>> 204 seconds or until user hits <Ctrl+C>. *DURATION* is optional.
>> 205 If *DURATION* is not specified, the profiling will run up to
>> 206 **UINT_MAX** seconds.
208 207
209 bpftool prog help !! 208 **bpftool prog help**
210 Print short help message. !! 209 Print short help message.
211 210
212 OPTIONS 211 OPTIONS
213 ======= 212 =======
214 .. include:: common_options.rst !! 213 -h, --help
>> 214 Print short generic help message (similar to **bpftool help**).
215 215
216 -f, --bpffs !! 216 -V, --version
217 When showing BPF programs, show file names !! 217 Print version number (similar to **bpftool version**).
218 218
219 -m, --mapcompat !! 219 -j, --json
220 Allow loading maps with unknown map defini !! 220 Generate JSON output. For commands that cannot produce JSON, this
221 !! 221 option has no effect.
222 -n, --nomount !! 222
223 Do not automatically attempt to mount any !! 223 -p, --pretty
224 tracefs or BPF virtual file system) when n !! 224 Generate human-readable JSON output. Implies **-j**.
225 !! 225
226 -L, --use-loader !! 226 -f, --bpffs
227 Load program as a "loader" program. This i !! 227 When showing BPF programs, show file names of pinned
228 of such programs. When this option is in u !! 228 programs.
229 programs from the object file into the ker !! 229
230 (therefore, the *PATH* must not be provide !! 230 -m, --mapcompat
231 !! 231 Allow loading maps with unknown map definitions.
232 When combined with the **-d**\ \|\ **--deb !! 232
233 messages are generated, and the execution !! 233 -n, --nomount
234 the **bpf_trace_printk**\ () helper to log !! 234 Do not automatically attempt to mount any virtual file system
235 creating the maps, and loading the program !! 235 (such as tracefs or BPF virtual file system) when necessary.
236 as a way to dump those messages). !! 236
>> 237 -d, --debug
>> 238 Print all logs available, even debug-level information. This
>> 239 includes logs from libbpf as well as from the verifier, when
>> 240 attempting to load programs.
237 241
238 EXAMPLES 242 EXAMPLES
239 ======== 243 ========
240 **# bpftool prog show** 244 **# bpftool prog show**
241 245
242 :: 246 ::
243 247
244 10: xdp name some_prog tag 005a3d2123620 248 10: xdp name some_prog tag 005a3d2123620c8b gpl run_time_ns 81632 run_cnt 10
245 loaded_at 2017-09-29T20:11:00+0000 249 loaded_at 2017-09-29T20:11:00+0000 uid 0
246 xlated 528B jited 370B memlock 4 250 xlated 528B jited 370B memlock 4096B map_ids 10
247 pids systemd(1) 251 pids systemd(1)
248 252
249 **# bpftool --json --pretty prog show** 253 **# bpftool --json --pretty prog show**
250 254
251 :: 255 ::
252 256
253 [{ 257 [{
254 "id": 10, 258 "id": 10,
255 "type": "xdp", 259 "type": "xdp",
256 "tag": "005a3d2123620c8b", 260 "tag": "005a3d2123620c8b",
257 "gpl_compatible": true, 261 "gpl_compatible": true,
258 "run_time_ns": 81632, 262 "run_time_ns": 81632,
259 "run_cnt": 10, 263 "run_cnt": 10,
260 "loaded_at": 1506715860, 264 "loaded_at": 1506715860,
261 "uid": 0, 265 "uid": 0,
262 "bytes_xlated": 528, 266 "bytes_xlated": 528,
263 "jited": true, 267 "jited": true,
264 "bytes_jited": 370, 268 "bytes_jited": 370,
265 "bytes_memlock": 4096, 269 "bytes_memlock": 4096,
266 "map_ids": [10 270 "map_ids": [10
267 ], 271 ],
268 "pids": [{ 272 "pids": [{
269 "pid": 1, 273 "pid": 1,
270 "comm": "systemd" 274 "comm": "systemd"
271 } 275 }
272 ] 276 ]
273 } 277 }
274 ] 278 ]
275 279
276 | 280 |
277 | **# bpftool prog dump xlated id 10 file /tmp 281 | **# bpftool prog dump xlated id 10 file /tmp/t**
278 | **$ ls -l /tmp/t** 282 | **$ ls -l /tmp/t**
279 283
280 :: 284 ::
281 285
282 -rw------- 1 root root 560 Jul 22 01:42 /t 286 -rw------- 1 root root 560 Jul 22 01:42 /tmp/t
283 287
284 **# bpftool prog dump jited tag 005a3d2123620c 288 **# bpftool prog dump jited tag 005a3d2123620c8b**
285 289
286 :: 290 ::
287 291
288 0: push %rbp 292 0: push %rbp
289 1: mov %rsp,%rbp 293 1: mov %rsp,%rbp
290 2: sub $0x228,%rsp 294 2: sub $0x228,%rsp
291 3: sub $0x28,%rbp 295 3: sub $0x28,%rbp
292 4: mov %rbx,0x0(%rbp) 296 4: mov %rbx,0x0(%rbp)
293 297
294 | 298 |
295 | **# mount -t bpf none /sys/fs/bpf/** 299 | **# mount -t bpf none /sys/fs/bpf/**
296 | **# bpftool prog pin id 10 /sys/fs/bpf/prog* 300 | **# bpftool prog pin id 10 /sys/fs/bpf/prog**
297 | **# bpftool prog load ./my_prog.o /sys/fs/bp 301 | **# bpftool prog load ./my_prog.o /sys/fs/bpf/prog2**
298 | **# ls -l /sys/fs/bpf/** 302 | **# ls -l /sys/fs/bpf/**
299 303
300 :: 304 ::
301 305
302 -rw------- 1 root root 0 Jul 22 01:43 prog 306 -rw------- 1 root root 0 Jul 22 01:43 prog
303 -rw------- 1 root root 0 Jul 22 01:44 prog 307 -rw------- 1 root root 0 Jul 22 01:44 prog2
304 308
305 **# bpftool prog dump jited pinned /sys/fs/bpf 309 **# bpftool prog dump jited pinned /sys/fs/bpf/prog opcodes**
306 310
307 :: 311 ::
308 312
309 0: push %rbp 313 0: push %rbp
310 55 314 55
311 1: mov %rsp,%rbp 315 1: mov %rsp,%rbp
312 48 89 e5 316 48 89 e5
313 4: sub $0x228,%rsp 317 4: sub $0x228,%rsp
314 48 81 ec 28 02 00 00 318 48 81 ec 28 02 00 00
315 b: sub $0x28,%rbp 319 b: sub $0x28,%rbp
316 48 83 ed 28 320 48 83 ed 28
317 f: mov %rbx,0x0(%rbp) 321 f: mov %rbx,0x0(%rbp)
318 48 89 5d 00 322 48 89 5d 00
319 323
320 | 324 |
321 | **# bpftool prog load xdp1_kern.o /sys/fs/bp 325 | **# 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 326 | **# bpftool prog show pinned /sys/fs/bpf/xdp1**
323 327
324 :: 328 ::
325 329
326 9: xdp name xdp_prog1 tag 539ec6ce11b52f 330 9: xdp name xdp_prog1 tag 539ec6ce11b52f98 gpl
327 loaded_at 2018-06-25T16:17:31-0700 331 loaded_at 2018-06-25T16:17:31-0700 uid 0
328 xlated 488B jited 336B memlock 4 332 xlated 488B jited 336B memlock 4096B map_ids 7
329 333
330 **# rm /sys/fs/bpf/xdp1** 334 **# rm /sys/fs/bpf/xdp1**
331 335
332 | 336 |
333 | **# bpftool prog profile id 337 duration 10 337 | **# bpftool prog profile id 337 duration 10 cycles instructions llc_misses**
334 338
335 :: 339 ::
336 340
337 51397 run_cnt 341 51397 run_cnt
338 40176203 cycles 342 40176203 cycles (83.05%)
339 42518139 instructions # 1.06 insns 343 42518139 instructions # 1.06 insns per cycle (83.39%)
340 123 llc_misses # 2.89 LLC mi 344 123 llc_misses # 2.89 LLC misses per million insns (83.15%)
341 345
342 | !! 346 SEE ALSO
343 | Output below is for the trace logs. !! 347 ========
344 | Run in separate terminals: !! 348 **bpf**\ (2),
345 | **# bpftool prog tracelog** !! 349 **bpf-helpers**\ (7),
346 | **# bpftool prog load -L -d file.o** !! 350 **bpftool**\ (8),
347 !! 351 **bpftool-btf**\ (8),
348 :: !! 352 **bpftool-cgroup**\ (8),
349 !! 353 **bpftool-feature**\ (8),
350 bpftool-620059 [004] d... 2634685.517903: !! 354 **bpftool-gen**\ (8),
351 bpftool-620059 [004] d... 2634685.517912: !! 355 **bpftool-iter**\ (8),
352 bpftool-620059 [004] d... 2634685.517997: !! 356 **bpftool-link**\ (8),
353 bpftool-620059 [004] d... 2634685.517999: !! 357 **bpftool-map**\ (8),
>> 358 **bpftool-net**\ (8),
>> 359 **bpftool-perf**\ (8),
>> 360 **bpftool-struct_ops**\ (8)
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