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authorRob Herring <robh@kernel.org>2020-06-12 18:57:00 +0300
committerRob Herring <robh@kernel.org>2020-06-12 18:57:00 +0300
commit8440d4a75d90556cfb8fb3e244443f67381aafd6 (patch)
tree2e1c986942c3beb6257121e52449f827a8ce4eaf /scripts/bpf_helpers_doc.py
parentf8d8b46cd20e3a262c17ba1061640d9c190ad769 (diff)
parent447615701525c910a386a491a6780dec4971f797 (diff)
downloadlinux-8440d4a75d90556cfb8fb3e244443f67381aafd6.tar.xz
Merge branch 'dt/schema-cleanups' into dt/linus
Diffstat (limited to 'scripts/bpf_helpers_doc.py')
-rwxr-xr-xscripts/bpf_helpers_doc.py8
1 files changed, 8 insertions, 0 deletions
diff --git a/scripts/bpf_helpers_doc.py b/scripts/bpf_helpers_doc.py
index f43d193aff3a..91fa668fa860 100755
--- a/scripts/bpf_helpers_doc.py
+++ b/scripts/bpf_helpers_doc.py
@@ -318,6 +318,11 @@ may be interested in:
of eBPF maps are used with a given helper function.
* *kernel/bpf/* directory contains other files in which additional helpers are
defined (for cgroups, sockmaps, etc.).
+* The bpftool utility can be used to probe the availability of helper functions
+ on the system (as well as supported program and map types, and a number of
+ other parameters). To do so, run **bpftool feature probe** (see
+ **bpftool-feature**\ (8) for details). Add the **unprivileged** keyword to
+ list features available to unprivileged users.
Compatibility between helper functions and program types can generally be found
in the files where helper functions are defined. Look for the **struct
@@ -338,6 +343,7 @@ SEE ALSO
========
**bpf**\ (2),
+**bpftool**\ (8),
**cgroups**\ (7),
**ip**\ (8),
**perf_event_open**\ (2),
@@ -414,6 +420,7 @@ class PrinterHelpers(Printer):
'struct sk_reuseport_md',
'struct sockaddr',
'struct tcphdr',
+ 'struct seq_file',
'struct __sk_buff',
'struct sk_msg_md',
@@ -450,6 +457,7 @@ class PrinterHelpers(Printer):
'struct sk_reuseport_md',
'struct sockaddr',
'struct tcphdr',
+ 'struct seq_file',
}
mapped_types = {
'u8': '__u8',