Thread (13 messages) 13 messages, 3 authors, 2025-05-30
STALE364d

[Patch bpf-next v3 3/4] skmsg: save some space in struct sk_psock

From: Cong Wang <hidden>
Date: 2025-05-19 20:36:53
Also in: bpf
Subsystem: bpf [l7 framework] (sockmap), the rest · Maintainers: John Fastabend, Jakub Sitnicki, Linus Torvalds

From: Cong Wang <redacted>

This patch aims to save some space in struct sk_psock and prepares for
the next patch which will add more fields.

psock->eval can only have 4 possible values, make it 8-bit is
sufficient.

psock->redir_ingress is just a boolean, using 1 bit is enough.

Signed-off-by: Cong Wang <redacted>
---
 include/linux/skmsg.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/include/linux/skmsg.h b/include/linux/skmsg.h
index bf28ce9b5fdb..7620f170c4b1 100644
--- a/include/linux/skmsg.h
+++ b/include/linux/skmsg.h
@@ -85,8 +85,8 @@ struct sk_psock {
 	struct sock			*sk_redir;
 	u32				apply_bytes;
 	u32				cork_bytes;
-	u32				eval;
-	bool				redir_ingress; /* undefined if sk_redir is null */
+	u8				eval;
+	u8 				redir_ingress : 1; /* undefined if sk_redir is null */
 	struct sk_msg			*cork;
 	struct sk_psock_progs		progs;
 #if IS_ENABLED(CONFIG_BPF_STREAM_PARSER)
-- 
2.34.1
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