[PATCH] - deprecate IPTOS_LOWDELAY in favor of IPTOS_DSCP_AF21

[Codarren Velvindron]

commit d114c7146341622517644da70c85e837fd45d5eb
Author: Codarren Velvindron <codar...@hackers.mu>
Date:   Sun Apr 15 20:29:21 2018 +0400

    Update QoS markers
    Use DSCP AF21 for interactive traffic. DSCP is defined in RFC2474. Many 
modern equipment no longer support IPTOS.

diff --git a/networking/ntpd.c b/networking/ntpd.c
index 6cd4970..a1b8ac5 100644
--- a/networking/ntpd.c
+++ b/networking/ntpd.c
@@ -93,10 +93,10 @@
 
 #include "libbb.h"
 #include <math.h>
-#include <netinet/ip.h> /* For IPTOS_LOWDELAY definition */
+#include <netinet/ip.h> /* For IPTOS_DSCP_AF21 definition */
 #include <sys/timex.h>
-#ifndef IPTOS_LOWDELAY
-# define IPTOS_LOWDELAY 0x10
+#ifndef IPTOS_DSCP_AF21
+# define IPTOS_DSCP_AF21 0x48
 #endif
 
 
@@ -910,7 +910,7 @@ send_query_to_peer(peer_t *p)
 #if ENABLE_FEATURE_IPV6
                if (family == AF_INET)
 #endif
-                       setsockopt_int(fd, IPPROTO_IP, IP_TOS, IPTOS_LOWDELAY);
+                       setsockopt_int(fd, IPPROTO_IP, IP_TOS, IPTOS_DSCP_AF21);
                free(local_lsa);
        }
 
@@ -2320,7 +2320,7 @@ static NOINLINE void ntp_init(char **argv)
                                xfunc_die();
                }
                socket_want_pktinfo(G_listen_fd);
-               setsockopt_int(G_listen_fd, IPPROTO_IP, IP_TOS, IPTOS_LOWDELAY);
+               setsockopt_int(G_listen_fd, IPPROTO_IP, IP_TOS, 
IPTOS_DSCP_AF21);
        }
 #endif
        /* I hesitate to set -20 prio. -15 should be high enough for 
timekeeping */
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