commit 11d622e2965647cbc3086d5950543426c7100c18
author Eric Dumazet <edumazet@google.com> Wed Sep 20 17:29:42 2023 +0000
committer COS Cherry Picker <cloud-image-release@prod.google.com> Mon Jun 24 02:05:05 2024 -0700
tree 58808765c386815f86e3ca3b1faf806f38f6af84
parent 412b457e1ae18eb77f1cfcec6fedb2bd49012c9f

tcp: constify tcp_rto_min() and tcp_rto_min_us() argument

[ Upstream patch f68a181fcd3b6a22236794813d5c9e5a62efd2b4 ]

Make clear these functions do not change any field from TCP socket.

BUG=b/345799473
TEST=presubmit
RELEASE_NOTE=None

cos-patch: bug
Change-Id: Ibfca7576e812120cba0521ff26bd1200ddc36aae
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Reviewed-on: https://cos-review.googlesource.com/c/third_party/kernel/+/74714
Reviewed-by: Arnav Kansal <rnv@google.com>
Reviewed-by: Kevin Berry <kpberry@google.com>
Tested-by: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>
Main-Branch-Verified: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>

include/net/tcp.h

diff --git a/include/net/tcp.h b/include/net/tcp.h
index df06e48..1811158 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -736,7 +736,7 @@ static inline void tcp_fast_path_check(struct sock *sk)
 u32 tcp_delack_max(struct sock *sk);
 
 /* Compute the actual rto_min value */
-static inline u32 tcp_rto_min(struct sock *sk)
+static inline u32 tcp_rto_min(const struct sock *sk)
 {
 	const struct dst_entry *dst = __sk_dst_get(sk);
 	u32 rto_min = inet_csk(sk)->icsk_rto_min;
@@ -746,7 +746,7 @@ static inline u32 tcp_rto_min(struct sock *sk)
 	return rto_min;
 }
 
-static inline u32 tcp_rto_min_us(struct sock *sk)
+static inline u32 tcp_rto_min_us(const struct sock *sk)
 {
 	return jiffies_to_usecs(tcp_rto_min(sk));
 }