From: Florent Revest <revest@chromium.org>
To: bpf@vger.kernel.org
Cc: viro@zeniv.linux.org.uk, davem@davemloft.net, kuba@kernel.org,
ast@kernel.org, daniel@iogearbox.net, kafai@fb.com, yhs@fb.com,
andrii@kernel.org, kpsingh@chromium.org, revest@google.com,
linux-kernel@vger.kernel.org, netdev@vger.kernel.org
Subject: [PATCH bpf-next v3 3/6] bpf: Expose bpf_sk_storage_* to iterator programs
Date: Thu, 26 Nov 2020 17:44:46 +0100 [thread overview]
Message-ID: <20201126164449.1745292-3-revest@google.com> (raw)
In-Reply-To: <20201126164449.1745292-1-revest@google.com>
Iterators are currently used to expose kernel information to userspace
over fast procfs-like files but iterators could also be used to
manipulate local storage. For example, the task_file iterator could be
used to initialize a socket local storage with associations between
processes and sockets or to selectively delete local storage values.
Signed-off-by: Florent Revest <revest@google.com>
Acked-by: Martin KaFai Lau <kafai@fb.com>
---
net/core/bpf_sk_storage.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/net/core/bpf_sk_storage.c b/net/core/bpf_sk_storage.c
index a32037daa933..4edd033e899c 100644
--- a/net/core/bpf_sk_storage.c
+++ b/net/core/bpf_sk_storage.c
@@ -394,6 +394,7 @@ static bool bpf_sk_storage_tracing_allowed(const struct bpf_prog *prog)
* use the bpf_sk_storage_(get|delete) helper.
*/
switch (prog->expected_attach_type) {
+ case BPF_TRACE_ITER:
case BPF_TRACE_RAW_TP:
/* bpf_sk_storage has no trace point */
return true;
--
2.29.2.454.gaff20da3a2-goog
next prev parent reply other threads:[~2020-11-26 16:45 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-26 16:44 [PATCH bpf-next v3 1/6] net: Remove the err argument from sock_from_file Florent Revest
2020-11-26 16:44 ` [PATCH bpf-next v3 2/6] bpf: Add a bpf_sock_from_file helper Florent Revest
2020-11-26 16:44 ` Florent Revest [this message]
2020-11-26 22:58 ` [PATCH bpf-next v3 3/6] bpf: Expose bpf_sk_storage_* to iterator programs KP Singh
2020-11-26 16:44 ` [PATCH bpf-next v3 4/6] bpf: Add an iterator selftest for bpf_sk_storage_delete Florent Revest
2020-11-26 16:44 ` [PATCH bpf-next v3 5/6] bpf: Add an iterator selftest for bpf_sk_storage_get Florent Revest
2020-11-27 7:00 ` Yonghong Song
2020-11-27 9:21 ` Florent Revest
2020-11-26 16:44 ` [PATCH bpf-next v3 6/6] bpf: Test bpf_sk_storage_get in tcp iterators Florent Revest
2020-11-27 7:02 ` Yonghong Song
2020-11-26 22:58 ` [PATCH bpf-next v3 1/6] net: Remove the err argument from sock_from_file KP Singh
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