From: Eric Dumazet <edumazet@google.com>
Date: Mon, 4 Dec 2023 09:19:07 +0000 (+0000)
Subject: ip route: add support for TCP usec TS
X-Git-Tag: v6.8.0~58^2~4
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a043bea75002;p=thirdparty%2Fiproute2.git

ip route: add support for TCP usec TS

linux-6.7 got support for TCP usec resolution timestamps,
using one bit in the features mask : RTAX_FEATURE_TCP_USEC_TS.

ip route add 10/8 ... features tcp_usec_ts

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David Ahern <dsahern@kernel.org>
---

diff --git a/ip/iproute.c b/ip/iproute.c
index fdf1f9a9d..73dbab48a 100644
--- a/ip/iproute.c
+++ b/ip/iproute.c
@@ -351,6 +351,11 @@ static void print_rtax_features(FILE *fp, unsigned int features)
 		features &= ~RTAX_FEATURE_ECN;
 	}
 
+	if (features & RTAX_FEATURE_TCP_USEC_TS) {
+		print_null(PRINT_ANY, "tcp_usec_ts", "tcp_usec_ts ", NULL);
+		features &= ~RTAX_FEATURE_TCP_USEC_TS;
+	}
+
 	if (features)
 		print_0xhex(PRINT_ANY,
 			    "features", "%#llx ", of);
@@ -1349,6 +1354,8 @@ static int iproute_modify(int cmd, unsigned int flags, int argc, char **argv)
 
 				if (strcmp(*argv, "ecn") == 0)
 					features |= RTAX_FEATURE_ECN;
+				else if (strcmp(*argv, "tcp_usec_ts") == 0)
+					features |= RTAX_FEATURE_TCP_USEC_TS;
 				else
 					invarg("\"features\" value not valid\n", *argv);
 				break;