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bpf: Update bpf_{g,s}etsockopt() documentation

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* append missing optnames to the end
* simplify bpf_getsockopt()'s doc

Signed-off-by: Ji Rongfeng <SikoJobs@outlook.com>
Link: https://lore.kernel.org/r/DU0P192MB15479B86200B1216EC90E162D6099@DU0P192MB1547.EURP192.PROD.OUTLOOK.COM
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
This commit is contained in:
Ji Rongfeng 2022-11-18 16:18:18 +08:00 committed by Martin KaFai Lau
parent 539886a32a
commit 72b43bde38
2 changed files with 25 additions and 19 deletions
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21
include/uapi/linux/bpf.h
View File

@ -2584,14 +2584,19 @@ union bpf_attr {
* * **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_BINDTODEVICE**, **SO_KEEPALIVE**, **SO_REUSEADDR**,
* **SO_REUSEPORT**, **SO_BINDTOIFINDEX**, **SO_TXREHASH**.
* * **IPPROTO_TCP**, which supports the following *optname*\ s:
* **TCP_CONGESTION**, **TCP_BPF_IW**,
* **TCP_BPF_SNDCWND_CLAMP**, **TCP_SAVE_SYN**,
* **TCP_KEEPIDLE**, **TCP_KEEPINTVL**, **TCP_KEEPCNT**,
* **TCP_SYNCNT**, **TCP_USER_TIMEOUT**, **TCP_NOTSENT_LOWAT**.
* **TCP_SYNCNT**, **TCP_USER_TIMEOUT**, **TCP_NOTSENT_LOWAT**,
* **TCP_NODELAY**, **TCP_MAXSEG**, **TCP_WINDOW_CLAMP**,
* **TCP_THIN_LINEAR_TIMEOUTS**, **TCP_BPF_DELACK_MAX**,
* **TCP_BPF_RTO_MIN**.
* * **IPPROTO_IP**, which supports *optname* **IP_TOS**.
* * **IPPROTO_IPV6**, which supports *optname* **IPV6_TCLASS**.
* * **IPPROTO_IPV6**, which supports the following *optname*\ s:
* **IPV6_TCLASS**, **IPV6_AUTOFLOWLABEL**.
* Return
* 0 on success, or a negative error in case of failure.
*
@ -2808,12 +2813,10 @@ union bpf_attr {
* and **BPF_CGROUP_INET6_CONNECT**.
*
* This helper actually implements a subset of **getsockopt()**.
* It supports the following *level*\ s:
*
* * **IPPROTO_TCP**, which supports *optname*
* **TCP_CONGESTION**.
* * **IPPROTO_IP**, which supports *optname* **IP_TOS**.
* * **IPPROTO_IPV6**, which supports *optname* **IPV6_TCLASS**.
* It supports the same set of *optname*\ s that is supported by
* the **bpf_setsockopt**\ () helper. The exceptions are
* **TCP_BPF_*** is **bpf_setsockopt**\ () only and
* **TCP_SAVED_SYN** is **bpf_getsockopt**\ () only.
* Return
* 0 on success, or a negative error in case of failure.
*

23
tools/include/uapi/linux/bpf.h
View File

@ -2584,14 +2584,19 @@ union bpf_attr {
* * **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_BINDTODEVICE**, **SO_KEEPALIVE**, **SO_REUSEADDR**,
* **SO_REUSEPORT**, **SO_BINDTOIFINDEX**, **SO_TXREHASH**.
* * **IPPROTO_TCP**, which supports the following *optname*\ s:
* **TCP_CONGESTION**, **TCP_BPF_IW**,
* **TCP_BPF_SNDCWND_CLAMP**, **TCP_SAVE_SYN**,
* **TCP_KEEPIDLE**, **TCP_KEEPINTVL**, **TCP_KEEPCNT**,
* **TCP_SYNCNT**, **TCP_USER_TIMEOUT**, **TCP_NOTSENT_LOWAT**.
* **TCP_SYNCNT**, **TCP_USER_TIMEOUT**, **TCP_NOTSENT_LOWAT**,
* **TCP_NODELAY**, **TCP_MAXSEG**, **TCP_WINDOW_CLAMP**,
* **TCP_THIN_LINEAR_TIMEOUTS**, **TCP_BPF_DELACK_MAX**,
* **TCP_BPF_RTO_MIN**.
* * **IPPROTO_IP**, which supports *optname* **IP_TOS**.
* * **IPPROTO_IPV6**, which supports *optname* **IPV6_TCLASS**.
* * **IPPROTO_IPV6**, which supports the following *optname*\ s:
* **IPV6_TCLASS**, **IPV6_AUTOFLOWLABEL**.
* Return
* 0 on success, or a negative error in case of failure.
*
@ -2647,7 +2652,7 @@ union bpf_attr {
* Return
* 0 on success, or a negative error in case of failure.
*
* long bpf_redirect_map(struct bpf_map *map, u32 key, u64 flags)
* long bpf_redirect_map(struct bpf_map *map, u64 key, u64 flags)
* Description
* Redirect the packet to the endpoint referenced by *map* at
* index *key*. Depending on its type, this *map* can contain
@ -2808,12 +2813,10 @@ union bpf_attr {
* and **BPF_CGROUP_INET6_CONNECT**.
*
* This helper actually implements a subset of **getsockopt()**.
* It supports the following *level*\ s:
*
* * **IPPROTO_TCP**, which supports *optname*
* **TCP_CONGESTION**.
* * **IPPROTO_IP**, which supports *optname* **IP_TOS**.
* * **IPPROTO_IPV6**, which supports *optname* **IPV6_TCLASS**.
* It supports the same set of *optname*\ s that is supported by
* the **bpf_setsockopt**\ () helper. The exceptions are
* **TCP_BPF_*** is **bpf_setsockopt**\ () only and
* **TCP_SAVED_SYN** is **bpf_getsockopt**\ () only.
* Return
* 0 on success, or a negative error in case of failure.
*