linux-kernel - [PATCH] bpf: Add SO_REUSEPORT to bpf

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Message-ID: <DU0P192MB15474ECC548CE7103DCE65FBD65F9@DU0P192MB1547.EURP192.PROD.OUTLOOK.COM>
Date:   Sat,  8 Oct 2022 01:55:27 +0800
From:   Rongfeng Ji <SikoJobs@...look.com>
To:     ast@...nel.org, daniel@...earbox.net, andrii@...nel.org,
        martin.lau@...ux.dev, song@...nel.org, yhs@...com,
        john.fastabend@...il.com, kpsingh@...nel.org, sdf@...gle.com,
        haoluo@...gle.com, jolsa@...nel.org, joannelkoong@...il.com,
        kuifeng@...com, maximmi@...dia.com, quentin@...valent.com
Cc:     bpf@...r.kernel.org, linux-kernel@...r.kernel.org,
        Rongfeng Ji <SikoJobs@...look.com>
Subject: [PATCH] bpf: Add SO_REUSEPORT to bpf_{g,s}etsockopt documentation

SO_REUSEPORT has been supported by bpf_{g,s}etsockopt for a long time.
It is added at the beginning of the optname list under level
SOL_SOCKET because it is supported by both helper functions.

Signed-off-by: Rongfeng Ji <SikoJobs@...look.com>
---
 include/uapi/linux/bpf.h       | 7 ++++---
 tools/include/uapi/linux/bpf.h | 7 ++++---
 2 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h
index 51b9aa640ad2..ccae9cb833b8 100644
--- a/include/uapi/linux/bpf.h
+++ b/include/uapi/linux/bpf.h
@@ -2574,9 +2574,9 @@ union bpf_attr {
  * 		It supports the following *level*\ s:
  *
  * 		* **SOL_SOCKET**, which supports the following *optname*\ s:
- * 		  **SO_RCVBUF**, **SO_SNDBUF**, **SO_MAX_PACING_RATE**,
- * 		  **SO_PRIORITY**, **SO_RCVLOWAT**, **SO_MARK**,
- * 		  **SO_BINDTODEVICE**, **SO_KEEPALIVE**.
+ * 		  **SO_REUSEPORT**, **SO_RCVBUF**, **SO_SNDBUF**,
+ * 		  **SO_MAX_PACING_RATE**, **SO_PRIORITY**, **SO_RCVLOWAT**,
+ * 		  **SO_MARK**, **SO_BINDTODEVICE**, **SO_KEEPALIVE**.
  * 		* **IPPROTO_TCP**, which supports the following *optname*\ s:
  * 		  **TCP_CONGESTION**, **TCP_BPF_IW**,
  * 		  **TCP_BPF_SNDCWND_CLAMP**, **TCP_SAVE_SYN**,
@@ -2802,6 +2802,7 @@ union bpf_attr {
  * 		This helper actually implements a subset of **getsockopt()**.
  * 		It supports the following *level*\ s:
  *
+ * 		* **SOL_SOCKET**, which supports *optname* **SO_REUSEPORT**.
  * 		* **IPPROTO_TCP**, which supports *optname*
  * 		  **TCP_CONGESTION**.
  * 		* **IPPROTO_IP**, which supports *optname* **IP_TOS**.
diff --git a/tools/include/uapi/linux/bpf.h b/tools/include/uapi/linux/bpf.h
index 51b9aa640ad2..ccae9cb833b8 100644
--- a/tools/include/uapi/linux/bpf.h
+++ b/tools/include/uapi/linux/bpf.h
@@ -2574,9 +2574,9 @@ union bpf_attr {
  * 		It supports the following *level*\ s:
  *
  * 		* **SOL_SOCKET**, which supports the following *optname*\ s:
- * 		  **SO_RCVBUF**, **SO_SNDBUF**, **SO_MAX_PACING_RATE**,
- * 		  **SO_PRIORITY**, **SO_RCVLOWAT**, **SO_MARK**,
- * 		  **SO_BINDTODEVICE**, **SO_KEEPALIVE**.
+ * 		  **SO_REUSEPORT**, **SO_RCVBUF**, **SO_SNDBUF**,
+ * 		  **SO_MAX_PACING_RATE**, **SO_PRIORITY**, **SO_RCVLOWAT**,
+ * 		  **SO_MARK**, **SO_BINDTODEVICE**, **SO_KEEPALIVE**.
  * 		* **IPPROTO_TCP**, which supports the following *optname*\ s:
  * 		  **TCP_CONGESTION**, **TCP_BPF_IW**,
  * 		  **TCP_BPF_SNDCWND_CLAMP**, **TCP_SAVE_SYN**,
@@ -2802,6 +2802,7 @@ union bpf_attr {
  * 		This helper actually implements a subset of **getsockopt()**.
  * 		It supports the following *level*\ s:
  *
+ * 		* **SOL_SOCKET**, which supports *optname* **SO_REUSEPORT**.
  * 		* **IPPROTO_TCP**, which supports *optname*
  * 		  **TCP_CONGESTION**.
  * 		* **IPPROTO_IP**, which supports *optname* **IP_TOS**.
-- 
2.30.2