netdev - [PATCH bpf] bpf: refer to struct xdp

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Date:   Wed, 19 Aug 2020 12:27:23 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     bpf@...r.kernel.org
Cc:     netdev@...r.kernel.org, Jakub Kicinski <kuba@...nel.org>
Subject: [PATCH bpf] bpf: refer to struct xdp_md in user space comments

uAPI uses xdp_md, not xdp_buff. Fix comments.

Signed-off-by: Jakub Kicinski <kuba@...nel.org>
---
 include/uapi/linux/bpf.h | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h
index 0480f893facd..cc3553a102d0 100644
--- a/include/uapi/linux/bpf.h
+++ b/include/uapi/linux/bpf.h
@@ -1554,7 +1554,7 @@ union bpf_attr {
  * 	Return
  * 		0 on success, or a negative error in case of failure.
  *
- * long bpf_xdp_adjust_head(struct xdp_buff *xdp_md, int delta)
+ * long bpf_xdp_adjust_head(struct xdp_md *xdp_md, int delta)
  * 	Description
  * 		Adjust (move) *xdp_md*\ **->data** by *delta* bytes. Note that
  * 		it is possible to use a negative value for *delta*. This helper
@@ -1752,7 +1752,7 @@ union bpf_attr {
  * 	Return
  * 		0 on success, or a negative error in case of failure.
  *
- * long bpf_xdp_adjust_meta(struct xdp_buff *xdp_md, int delta)
+ * long bpf_xdp_adjust_meta(struct xdp_md *xdp_md, int delta)
  * 	Description
  * 		Adjust the address pointed by *xdp_md*\ **->data_meta** by
  * 		*delta* (which can be positive or negative). Note that this
@@ -2051,7 +2051,7 @@ union bpf_attr {
  * 	Return
  * 		0 on success, or a negative error in case of failure.
  *
- * long bpf_xdp_adjust_tail(struct xdp_buff *xdp_md, int delta)
+ * long bpf_xdp_adjust_tail(struct xdp_md *xdp_md, int delta)
  * 	Description
  * 		Adjust (move) *xdp_md*\ **->data_end** by *delta* bytes. It is
  * 		possible to both shrink and grow the packet tail.
@@ -3049,7 +3049,7 @@ union bpf_attr {
  *		The value to write, of *size*, is passed through eBPF stack and
  *		pointed by *data*.
  *
- *		*ctx* is a pointer to in-kernel struct xdp_buff.
+ *		*ctx* is a pointer to in-kernel struct xdp_md.
  *
  *		This helper is similar to **bpf_perf_eventoutput**\ () but
  *		restricted to raw_tracepoint bpf programs.
-- 
2.26.2