Better packet priority and traffic class handling.

Implements support for IPv6 traffic class, sets higher priority for OSPF
and RIP outgoing packets by default and allows to configure ToS/DS/TClass
IP header field and the local priority of outgoing packets.

1 files changed, 9 insertions, 2 deletions

diff --git a/sysdep/unix/io.c b/sysdep/unix/io.c
index 80914afe..434a05be 100644
--- a/sysdep/unix/io.c
+++ b/sysdep/unix/io.c
@@ -598,7 +598,7 @@ sock_new(pool *p)
   sock *s = ralloc(p, &sk_class);
   s->pool = p;
   // s->saddr = s->daddr = IPA_NONE;
-  s->tos = s->ttl = -1;
+  s->tos = s->priority = s->ttl = -1;
   s->fd = -1;
   return s;
 }
@@ -783,11 +783,18 @@ sk_setup(sock *s)
     ERR("fcntl(O_NONBLOCK)");
   if (s->type == SK_UNIX)
     return NULL;
-#ifndef IPV6
+
+#ifdef IPV6
+  if ((s->tos >= 0) && setsockopt(fd, SOL_IPV6, IPV6_TCLASS, &s->tos, sizeof(s->tos)) < 0)
+    WARN("IPV6_TCLASS");
+#else
   if ((s->tos >= 0) && setsockopt(fd, SOL_IP, IP_TOS, &s->tos, sizeof(s->tos)) < 0)
     WARN("IP_TOS");
 #endif
 
+  if (s->priority >= 0)
+    sk_set_priority(s, s->priority);
+
 #ifdef IPV6
   int v = 1;
   if ((s->flags & SKF_V6ONLY) && setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, &v, sizeof(v)) < 0)