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Date:   Thu, 26 Nov 2020 17:44:46 +0100
From:   Florent Revest <>
Subject: [PATCH bpf-next v3 3/6] bpf: Expose bpf_sk_storage_* to iterator programs

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 <>
Acked-by: Martin KaFai Lau <>
 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) {
 		/* bpf_sk_storage has no trace point */
 		return true;

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