Commit bdb2bc75 authored Jul 15, 2022 by Joanne Koong Committed by Alexei Starovoitov Jul 19, 2022

bpf: fix bpf_skb_pull_data documentation



Fix documentation for bpf_skb_pull_data() helper for
when len == 0.

Fixes: fa15601a ("bpf: add documentation for eBPF helpers (33-41)")
Signed-off-by: Joanne Koong <joannelkoong@gmail.com>
Acked-by: Quentin Monnet <quentin@isovalent.com>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Link: https://lore.kernel.org/r/20220715193800.3940070-1-joannelkoong@gmail.com


Signed-off-by: Alexei Starovoitov <ast@kernel.org>

parent a1ac9fd6

include/uapi/linux/bpf.h

+2 −1

Original line number	Diff line number	Diff line
		@@ -2361,7 +2361,8 @@ union bpf_attr {
		* Pull in non-linear data in case the skb is non-linear and not
		* all of len are part of the linear section. Make len bytes
		* from skb readable and writable. If a zero value is passed for
		* len, then the whole length of the skb is pulled.
		* len, then all bytes in the linear part of skb will be made
		* readable and writable.
		*
		* This helper is only needed for reading and writing with direct
		* packet access.

tools/include/uapi/linux/bpf.h

+2 −1

Original line number	Diff line number	Diff line
		@@ -2361,7 +2361,8 @@ union bpf_attr {
		* Pull in non-linear data in case the skb is non-linear and not
		* all of len are part of the linear section. Make len bytes
		* from skb readable and writable. If a zero value is passed for
		* len, then the whole length of the skb is pulled.
		* len, then all bytes in the linear part of skb will be made
		* readable and writable.
		*
		* This helper is only needed for reading and writing with direct
		* packet access.