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** | **visual** | **linum**}]
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*] [**dev** *NAME*] [**pinmaps** *MAP_DIR*]
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* }
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/getpeername4** | **cgroup/getpeername6** |
51 | **cgroup/getpeername4** | **cgroup/getpe !! 51 | **cgroup/getsockname4** | **cgroup/getsockname6** | **cgroup/sendmsg4** | **cgroup/sendmsg6** |
52 | **cgroup/getsockname4** | **cgroup/getso !! 52 | **cgroup/recvmsg4** | **cgroup/recvmsg6** | **cgroup/sysctl** |
53 | **cgroup/sendmsg4** | **cgroup/sendmsg6* !! 53 | **cgroup/getsockopt** | **cgroup/setsockopt** | **cgroup/sock_release** |
54 | **cgroup/recvmsg4** | **cgroup/recvmsg6* !! 54 | **struct_ops** | **fentry** | **fexit** | **freplace** | **sk_lookup**
55 | **cgroup/getsockopt** | **cgroup/setsock !! 55 | }
56 | **struct_ops** | **fentry** | **fexit** !! 56 | *ATTACH_TYPE* := {
57 | } !! 57 | **sk_msg_verdict** | **sk_skb_verdict** | **sk_skb_stream_verdict** |
58 | *ATTACH_TYPE* := { !! 58 | **sk_skb_stream_parser** | **flow_dissector**
59 | **sk_msg_verdict** | **sk_skb_verdict** !! 59 | }
60 | **sk_skb_stream_parser** | **flow_dissec !! 60 | *METRICs* := {
61 | } !! 61 | **cycles** | **instructions** | **l1d_loads** | **llc_misses** |
62 | *METRICs* := { !! 62 | **itlb_misses** | **dtlb_misses**
63 | **cycles** | **instructions** | **l1d_lo !! 63 | }
64 | **itlb_misses** | **dtlb_misses** <<
65 | } <<
66 64
67 65
68 DESCRIPTION 66 DESCRIPTION
69 =========== 67 ===========
70 bpftool prog { show | list } [*PROG*] !! 68 **bpftool prog { show | list }** [*PROG*]
71 Show information about loaded programs. I !! 69 Show information about loaded programs. If *PROG* is
72 information only about given programs, oth !! 70 specified show information only about given programs,
73 currently loaded on the system. In case of !! 71 otherwise list all programs currently loaded on the system.
74 match several programs which will all be s !! 72 In case of **tag** or **name**, *PROG* may match several
75 !! 73 programs which will all be shown.
76 Output will start with program ID followed !! 74
77 named attributes (depending on kernel vers !! 75 Output will start with program ID followed by program type and
78 !! 76 zero or more named attributes (depending on kernel version).
79 Since Linux 5.1 the kernel can collect sta !! 77
80 the total time spent running the program, !! 78 Since Linux 5.1 the kernel can collect statistics on BPF
81 run). If available, bpftool shows such sta !! 79 programs (such as the total time spent running the program,
82 not collect them by defaults, as it slight !! 80 and the number of times it was run). If available, bpftool
83 program run. Activation or deactivation of !! 81 shows such statistics. However, the kernel does not collect
84 **kernel.bpf_stats_enabled** sysctl knob. !! 82 them by defaults, as it slightly impacts performance on each
85 !! 83 program run. Activation or deactivation of the feature is
86 Since Linux 5.8 bpftool is able to discove !! 84 performed via the **kernel.bpf_stats_enabled** sysctl knob.
87 that hold open file descriptors (FDs) agai !! 85
88 bpftool will automatically emit this infor !! 86 Since Linux 5.8 bpftool is able to discover information about
89 !! 87 processes that hold open file descriptors (FDs) against BPF
90 bpftool prog dump xlated *PROG* [{ file *FILE* !! 88 programs. On such kernels bpftool will automatically emit this
91 Dump eBPF instructions of the programs fro !! 89 information as well.
92 will be disassembled and printed to standa !! 90
93 format. In this case, **opcodes** controls !! 91 **bpftool prog dump xlated** *PROG* [{ **file** *FILE* | **opcodes** | **visual** | **linum** }]
94 as well. !! 92 Dump eBPF instructions of the programs from the kernel. By
95 !! 93 default, eBPF will be disassembled and printed to standard
96 In case of **tag** or **name**, *PROG* may !! 94 output in human-readable format. In this case, **opcodes**
97 will all be dumped. However, if **file** !! 95 controls if raw opcodes should be printed as well.
98 *PROG* must match a single program. !! 96
99 !! 97 In case of **tag** or **name**, *PROG* may match several
100 If **file** is specified, the binary image !! 98 programs which will all be dumped. However, if **file** or
101 *FILE*. !! 99 **visual** is specified, *PROG* must match a single program.
102 !! 100
103 If **visual** is specified, control flow g !! 101 If **file** is specified, the binary image will instead be
104 and eBPF instructions will be presented wi !! 102 written to *FILE*.
105 output. !! 103
106 !! 104 If **visual** is specified, control flow graph (CFG) will be
107 If the programs have line_info available, !! 105 built instead, and eBPF instructions will be presented with
108 displayed. If **linum** is specified, the !! 106 CFG in DOT format, on standard output.
109 column will also be displayed. !! 107
110 !! 108 If the programs have line_info available, the source line will
111 bpftool prog dump jited *PROG* [{ file *FILE* !! 109 be displayed by default. If **linum** is specified,
112 Dump jited image (host machine code) of th !! 110 the filename, line number and line column will also be
113 !! 111 displayed on top of the source line.
114 If *FILE* is specified image will be writt !! 112
115 be disassembled and printed to stdout. *PR !! 113 **bpftool prog dump jited** *PROG* [{ **file** *FILE* | **opcodes** | **linum** }]
116 when **file** is specified. !! 114 Dump jited image (host machine code) of the program.
117 !! 115
118 **opcodes** controls if raw opcodes will b !! 116 If *FILE* is specified image will be written to a file,
119 !! 117 otherwise it will be disassembled and printed to stdout.
120 If the prog has line_info available, the s !! 118 *PROG* must match a single program when **file** is specified.
121 **linum** is specified, the filename, line !! 119
122 be displayed. !! 120 **opcodes** controls if raw opcodes will be printed.
123 !! 121
124 bpftool prog pin *PROG* *FILE* !! 122 If the prog has line_info available, the source line will
125 Pin program *PROG* as *FILE*. !! 123 be displayed by default. If **linum** is specified,
126 !! 124 the filename, line number and line column will also be
127 Note: *FILE* must be located in *bpffs* mo !! 125 displayed on top of the source line.
128 character ('.'), which is reserved for fut !! 126
129 !! 127 **bpftool prog pin** *PROG* *FILE*
130 bpftool prog { load | loadall } *OBJ* *PATH* [ !! 128 Pin program *PROG* as *FILE*.
131 Load bpf program(s) from binary *OBJ* and !! 129
132 load** pins only the first program from th !! 130 Note: *FILE* must be located in *bpffs* mount. It must not
133 loadall** pins all programs from the *OBJ* !! 131 contain a dot character ('.'), which is reserved for future
134 is optional, if not specified program type !! 132 extensions of *bpffs*.
135 names. By default bpftool will create new !! 133
136 object being loaded. **map** parameter al !! 134 **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, !! 135 Load bpf program(s) from binary *OBJ* and pin as *PATH*.
138 *IDX* refers to index of the map to be rep !! 136 **bpftool prog load** pins only the first program from the
139 from 0, while *NAME* allows to replace a m !! 137 *OBJ* as *PATH*. **bpftool prog loadall** pins all programs
140 map to use, referring to it by **id** or t !! 138 from the *OBJ* under *PATH* directory.
141 **offload_dev** *NAME* is specified progra !! 139 **type** is optional, if not specified program type will be
142 networking device (offload). If **xdpmeta_ !! 140 inferred from section names.
143 will become device-bound without offloadin !! 141 By default bpftool will create new maps as declared in the ELF
144 metadata. Optional **pinmaps** argument ca !! 142 object being loaded. **map** parameter allows for the reuse
145 under *MAP_DIR* directory. !! 143 of existing maps. It can be specified multiple times, each
146 !! 144 time for a different map. *IDX* refers to index of the map
147 If **autoattach** is specified program wil !! 145 to be replaced in the ELF file counting from 0, while *NAME*
148 case, only the link (representing the prog !! 146 allows to replace a map by name. *MAP* specifies the map to
149 pinned, not the program as such, so the pa !! 147 use, referring to it by **id** or through a **pinned** file.
150 show -f**, only show in **bpftool link sho !! 148 If **dev** *NAME* is specified program will be loaded onto
151 when bpftool (libbpf) is able to infer all !! 149 given networking device (offload).
152 object file, in particular, it's not suppo !! 150 Optional **pinmaps** argument can be provided to pin all
153 program does not support autoattach, bpfto !! 151 maps under *MAP_DIR* directory.
154 for that program instead. !! 152
155 !! 153 Note: *PATH* must be located in *bpffs* mount. It must not
156 Note: *PATH* must be located in *bpffs* mo !! 154 contain a dot character ('.'), which is reserved for future
157 character ('.'), which is reserved for fut !! 155 extensions of *bpffs*.
158 !! 156
159 bpftool prog attach *PROG* *ATTACH_TYPE* [*MAP !! 157 **bpftool prog attach** *PROG* *ATTACH_TYPE* [*MAP*]
160 Attach bpf program *PROG* (with type speci !! 158 Attach bpf program *PROG* (with type specified by
161 *ATTACH_TYPEs* require a *MAP* parameter, !! 159 *ATTACH_TYPE*). Most *ATTACH_TYPEs* require a *MAP*
162 *flow_dissector* which is attached to curr !! 160 parameter, with the exception of *flow_dissector* which is
163 !! 161 attached to current networking name space.
164 bpftool prog detach *PROG* *ATTACH_TYPE* [*MAP !! 162
165 Detach bpf program *PROG* (with type speci !! 163 **bpftool prog detach** *PROG* *ATTACH_TYPE* [*MAP*]
166 *ATTACH_TYPEs* require a *MAP* parameter, !! 164 Detach bpf program *PROG* (with type specified by
167 *flow_dissector* which is detached from th !! 165 *ATTACH_TYPE*). Most *ATTACH_TYPEs* require a *MAP*
168 !! 166 parameter, with the exception of *flow_dissector* which is
169 bpftool prog tracelog !! 167 detached from the current networking name space.
170 Dump the trace pipe of the system to the c !! 168
171 stop printing. BPF programs can write to t !! 169 **bpftool prog tracelog**
172 the **bpf_trace_printk**\ () helper. This !! 170 Dump the trace pipe of the system to the console (stdout).
173 purposes. For streaming data from BPF prog !! 171 Hit <Ctrl+C> to stop printing. BPF programs can write to this
174 perf events (see also **bpftool-map**\ (8) !! 172 trace pipe at runtime with the **bpf_trace_printk**\ () helper.
175 !! 173 This should be used only for debugging purposes. For
176 bpftool prog run *PROG* data_in *FILE* [data_o !! 174 streaming data from BPF programs to user space, one can use
177 Run BPF program *PROG* in the kernel testi !! 175 perf events (see also **bpftool-map**\ (8)).
178 meaning that the program works on the data !! 176
179 user, and not on actual packets or monitor !! 177 **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 !! 178 Run BPF program *PROG* in the kernel testing infrastructure
181 !! 179 for BPF, meaning that the program works on the data and
182 Input data is read from the *FILE* passed !! 180 context provided by the user, and not on actual packets or
183 is "**-**", input data is read from standa !! 181 monitored functions etc. Return value and duration for the
184 is read from *FILE* passed with **ctx_in** !! 182 test run are printed out to the console.
185 read from standard input, but only if stan !! 183
186 for input data. If a *FILE* is passed with !! 184 Input data is read from the *FILE* passed with **data_in**.
187 written to that file. Similarly, output co !! 185 If this *FILE* is "**-**", input data is read from standard
188 passed with **ctx_out**. For both output f !! 186 input. Input context, if any, is read from *FILE* passed with
189 print to the standard output (as plain tex !! 187 **ctx_in**. Again, "**-**" can be used to read from standard
190 passed). If output keywords are omitted, o !! 188 input, but only if standard input is not already in use for
191 discarded. Keywords **data_size_out** and !! 189 input data. If a *FILE* is passed with **data_out**, output
192 the size (in bytes) for the output buffers !! 190 data is written to that file. Similarly, output context is
193 default of 32 kB should be more than enoug !! 191 written to the *FILE* passed with **ctx_out**. For both
194 !! 192 output flows, "**-**" can be used to print to the standard
195 Keyword **repeat** is used to indicate the !! 193 output (as plain text, or JSON if relevant option was
196 perform. Note that output data and context !! 194 passed). If output keywords are omitted, output data and
197 the last of those runs. The duration print !! 195 context are discarded. Keywords **data_size_out** and
198 an average over all runs performed by the !! 196 **ctx_size_out** are used to pass the size (in bytes) for the
199 !! 197 output buffers to the kernel, although the default of 32 kB
200 Not all program types support test run. Am !! 198 should be more than enough for most cases.
201 them can take the **ctx_in**/**ctx_out** a !! 199
202 perform checks on program types. !! 200 Keyword **repeat** is used to indicate the number of
203 !! 201 consecutive runs to perform. Note that output data and
204 bpftool prog profile *PROG* [duration *DURATIO !! 202 context printed to files correspond to the last of those
205 Profile *METRICs* for bpf program *PROG* f !! 203 runs. The duration printed out at the end of the runs is an
206 user hits <Ctrl+C>. *DURATION* is optional !! 204 average over all runs performed by the command.
207 the profiling will run up to **UINT_MAX** !! 205
>> 206 Not all program types support test run. Among those which do,
>> 207 not all of them can take the **ctx_in**/**ctx_out**
>> 208 arguments. bpftool does not perform checks on program types.
>> 209
>> 210 **bpftool prog profile** *PROG* [**duration** *DURATION*] *METRICs*
>> 211 Profile *METRICs* for bpf program *PROG* for *DURATION*
>> 212 seconds or until user hits <Ctrl+C>. *DURATION* is optional.
>> 213 If *DURATION* is not specified, the profiling will run up to
>> 214 **UINT_MAX** seconds.
208 215
209 bpftool prog help !! 216 **bpftool prog help**
210 Print short help message. !! 217 Print short help message.
211 218
212 OPTIONS 219 OPTIONS
213 ======= 220 =======
214 .. include:: common_options.rst !! 221 .. include:: common_options.rst
215 222
216 -f, --bpffs !! 223 -f, --bpffs
217 When showing BPF programs, show file names !! 224 When showing BPF programs, show file names of pinned
218 !! 225 programs.
219 -m, --mapcompat !! 226
220 Allow loading maps with unknown map defini !! 227 -m, --mapcompat
221 !! 228 Allow loading maps with unknown map definitions.
222 -n, --nomount !! 229
223 Do not automatically attempt to mount any !! 230 -n, --nomount
224 tracefs or BPF virtual file system) when n !! 231 Do not automatically attempt to mount any virtual file system
225 !! 232 (such as tracefs or BPF virtual file system) when necessary.
226 -L, --use-loader !! 233
227 Load program as a "loader" program. This i !! 234 -L, --use-loader
228 of such programs. When this option is in u !! 235 Load program as a "loader" program. This is useful to debug
229 programs from the object file into the ker !! 236 the generation of such programs. When this option is in
230 (therefore, the *PATH* must not be provide !! 237 use, bpftool attempts to load the programs from the object
231 !! 238 file into the kernel, but does not pin them (therefore, the
232 When combined with the **-d**\ \|\ **--deb !! 239 *PATH* must not be provided).
233 messages are generated, and the execution !! 240
234 the **bpf_trace_printk**\ () helper to log !! 241 When combined with the **-d**\ \|\ **--debug** option,
235 creating the maps, and loading the program !! 242 additional debug messages are generated, and the execution
236 as a way to dump those messages). !! 243 of the loader program will use the **bpf_trace_printk**\ ()
>> 244 helper to log each step of loading BTF, creating the maps,
>> 245 and loading the programs (see **bpftool prog tracelog** as
>> 246 a way to dump those messages).
237 247
238 EXAMPLES 248 EXAMPLES
239 ======== 249 ========
240 **# bpftool prog show** 250 **# bpftool prog show**
241 251
242 :: 252 ::
243 253
244 10: xdp name some_prog tag 005a3d2123620 254 10: xdp name some_prog tag 005a3d2123620c8b gpl run_time_ns 81632 run_cnt 10
245 loaded_at 2017-09-29T20:11:00+0000 255 loaded_at 2017-09-29T20:11:00+0000 uid 0
246 xlated 528B jited 370B memlock 4 256 xlated 528B jited 370B memlock 4096B map_ids 10
247 pids systemd(1) 257 pids systemd(1)
248 258
249 **# bpftool --json --pretty prog show** 259 **# bpftool --json --pretty prog show**
250 260
251 :: 261 ::
252 262
253 [{ 263 [{
254 "id": 10, 264 "id": 10,
255 "type": "xdp", 265 "type": "xdp",
256 "tag": "005a3d2123620c8b", 266 "tag": "005a3d2123620c8b",
257 "gpl_compatible": true, 267 "gpl_compatible": true,
258 "run_time_ns": 81632, 268 "run_time_ns": 81632,
259 "run_cnt": 10, 269 "run_cnt": 10,
260 "loaded_at": 1506715860, 270 "loaded_at": 1506715860,
261 "uid": 0, 271 "uid": 0,
262 "bytes_xlated": 528, 272 "bytes_xlated": 528,
263 "jited": true, 273 "jited": true,
264 "bytes_jited": 370, 274 "bytes_jited": 370,
265 "bytes_memlock": 4096, 275 "bytes_memlock": 4096,
266 "map_ids": [10 276 "map_ids": [10
267 ], 277 ],
268 "pids": [{ 278 "pids": [{
269 "pid": 1, 279 "pid": 1,
270 "comm": "systemd" 280 "comm": "systemd"
271 } 281 }
272 ] 282 ]
273 } 283 }
274 ] 284 ]
275 285
276 | 286 |
277 | **# bpftool prog dump xlated id 10 file /tmp 287 | **# bpftool prog dump xlated id 10 file /tmp/t**
278 | **$ ls -l /tmp/t** 288 | **$ ls -l /tmp/t**
279 289
280 :: 290 ::
281 291
282 -rw------- 1 root root 560 Jul 22 01:42 /t 292 -rw------- 1 root root 560 Jul 22 01:42 /tmp/t
283 293
284 **# bpftool prog dump jited tag 005a3d2123620c 294 **# bpftool prog dump jited tag 005a3d2123620c8b**
285 295
286 :: 296 ::
287 297
288 0: push %rbp 298 0: push %rbp
289 1: mov %rsp,%rbp 299 1: mov %rsp,%rbp
290 2: sub $0x228,%rsp 300 2: sub $0x228,%rsp
291 3: sub $0x28,%rbp 301 3: sub $0x28,%rbp
292 4: mov %rbx,0x0(%rbp) 302 4: mov %rbx,0x0(%rbp)
293 303
294 | 304 |
295 | **# mount -t bpf none /sys/fs/bpf/** 305 | **# mount -t bpf none /sys/fs/bpf/**
296 | **# bpftool prog pin id 10 /sys/fs/bpf/prog* 306 | **# bpftool prog pin id 10 /sys/fs/bpf/prog**
297 | **# bpftool prog load ./my_prog.o /sys/fs/bp 307 | **# bpftool prog load ./my_prog.o /sys/fs/bpf/prog2**
298 | **# ls -l /sys/fs/bpf/** 308 | **# ls -l /sys/fs/bpf/**
299 309
300 :: 310 ::
301 311
302 -rw------- 1 root root 0 Jul 22 01:43 prog 312 -rw------- 1 root root 0 Jul 22 01:43 prog
303 -rw------- 1 root root 0 Jul 22 01:44 prog 313 -rw------- 1 root root 0 Jul 22 01:44 prog2
304 314
305 **# bpftool prog dump jited pinned /sys/fs/bpf 315 **# bpftool prog dump jited pinned /sys/fs/bpf/prog opcodes**
306 316
307 :: 317 ::
308 318
309 0: push %rbp 319 0: push %rbp
310 55 320 55
311 1: mov %rsp,%rbp 321 1: mov %rsp,%rbp
312 48 89 e5 322 48 89 e5
313 4: sub $0x228,%rsp 323 4: sub $0x228,%rsp
314 48 81 ec 28 02 00 00 324 48 81 ec 28 02 00 00
315 b: sub $0x28,%rbp 325 b: sub $0x28,%rbp
316 48 83 ed 28 326 48 83 ed 28
317 f: mov %rbx,0x0(%rbp) 327 f: mov %rbx,0x0(%rbp)
318 48 89 5d 00 328 48 89 5d 00
319 329
320 | 330 |
321 | **# bpftool prog load xdp1_kern.o /sys/fs/bp 331 | **# 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 332 | **# bpftool prog show pinned /sys/fs/bpf/xdp1**
323 333
324 :: 334 ::
325 335
326 9: xdp name xdp_prog1 tag 539ec6ce11b52f 336 9: xdp name xdp_prog1 tag 539ec6ce11b52f98 gpl
327 loaded_at 2018-06-25T16:17:31-0700 337 loaded_at 2018-06-25T16:17:31-0700 uid 0
328 xlated 488B jited 336B memlock 4 338 xlated 488B jited 336B memlock 4096B map_ids 7
329 339
330 **# rm /sys/fs/bpf/xdp1** 340 **# rm /sys/fs/bpf/xdp1**
331 341
332 | 342 |
333 | **# bpftool prog profile id 337 duration 10 343 | **# bpftool prog profile id 337 duration 10 cycles instructions llc_misses**
334 344
335 :: 345 ::
336 346
337 51397 run_cnt 347 51397 run_cnt
338 40176203 cycles 348 40176203 cycles (83.05%)
339 42518139 instructions # 1.06 insns 349 42518139 instructions # 1.06 insns per cycle (83.39%)
340 123 llc_misses # 2.89 LLC mi 350 123 llc_misses # 2.89 LLC misses per million insns (83.15%)
341 351
342 | 352 |
343 | Output below is for the trace logs. 353 | Output below is for the trace logs.
344 | Run in separate terminals: 354 | Run in separate terminals:
345 | **# bpftool prog tracelog** 355 | **# bpftool prog tracelog**
346 | **# bpftool prog load -L -d file.o** 356 | **# bpftool prog load -L -d file.o**
347 357
348 :: 358 ::
349 359
350 bpftool-620059 [004] d... 2634685.517903: 360 bpftool-620059 [004] d... 2634685.517903: bpf_trace_printk: btf_load size 665 r=5
351 bpftool-620059 [004] d... 2634685.517912: 361 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: 362 bpftool-620059 [004] d... 2634685.517997: bpf_trace_printk: prog_load sample insn_cnt 13 r=7
353 bpftool-620059 [004] d... 2634685.517999: 363 bpftool-620059 [004] d... 2634685.517999: bpf_trace_printk: close(5) = 0
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