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/+/74720
Main-Branch-Verified: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>
Reviewed-by: Kevin Berry <kpberry@google.com>
Reviewed-by: Arnav Kansal <rnv@google.com>
Tested-by: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>
1 file changed