From ef4a50be10c6dd0abffd957132cd146029c3d79d Mon Sep 17 00:00:00 2001
From: Ondrej Zajicek <santiago@crfreenet.org>
Date: Mon, 24 Jun 2013 16:37:30 +0200
Subject: 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.
---
 proto/ospf/config.Y | 6 +++++-
 proto/ospf/iface.c  | 8 ++++++--
 proto/ospf/ospf.h   | 2 ++
 proto/rip/config.Y  | 6 +++++-
 proto/rip/rip.c     | 7 +++++--
 proto/rip/rip.h     | 2 ++
 6 files changed, 25 insertions(+), 6 deletions(-)

(limited to 'proto')

diff --git a/proto/ospf/config.Y b/proto/ospf/config.Y
index ba050d85..d9379a7c 100644
--- a/proto/ospf/config.Y
+++ b/proto/ospf/config.Y
@@ -131,7 +131,7 @@ CF_KEYWORDS(NONE, SIMPLE, AUTHENTICATION, STRICT, CRYPTOGRAPHIC)
 CF_KEYWORDS(ELIGIBLE, POLL, NETWORKS, HIDDEN, VIRTUAL, CHECK, LINK)
 CF_KEYWORDS(RX, BUFFER, LARGE, NORMAL, STUBNET, HIDDEN, SUMMARY, TAG, EXTERNAL)
 CF_KEYWORDS(WAIT, DELAY, LSADB, ECMP, LIMIT, WEIGHT, NSSA, TRANSLATOR, STABILITY)
-CF_KEYWORDS(GLOBAL, LSID, ROUTER, SELF, INSTANCE, REAL, NETMASK)
+CF_KEYWORDS(GLOBAL, LSID, ROUTER, SELF, INSTANCE, REAL, NETMASK, TX, PRIORITY)
 
 %type <t> opttext
 %type <ld> lsadb_args
@@ -305,6 +305,8 @@ ospf_iface_item:
  | RX BUFFER LARGE { OSPF_PATT->rxbuf = OSPF_RXBUF_LARGE ; } 
  | RX BUFFER NORMAL { OSPF_PATT->rxbuf = OSPF_RXBUF_NORMAL ; } 
  | RX BUFFER expr { OSPF_PATT->rxbuf = $3 ; if (($3 < OSPF_RXBUF_MINSIZE) || ($3 > OSPF_MAX_PKT_SIZE)) cf_error("Buffer size must be in range 256-65535"); } 
+ | TX tos { OSPF_PATT->tx_tos = $2; }
+ | TX PRIORITY expr { OSPF_PATT->tx_priority = $3; }
  | password_list
  ;
 
@@ -367,6 +369,8 @@ ospf_iface_start:
   init_list(&OSPF_PATT->nbma_list);
   OSPF_PATT->autype = OSPF_AUTH_NONE;
   OSPF_PATT->ptp_netmask = 2; /* not specified */
+  OSPF_PATT->tx_tos = IP_PREC_INTERNET_CONTROL;
+  OSPF_PATT->tx_priority = sk_priority_control;
   reset_passwords();
  }
 ;
diff --git a/proto/ospf/iface.c b/proto/ospf/iface.c
index 3da8f56c..bc3b1ef6 100644
--- a/proto/ospf/iface.c
+++ b/proto/ospf/iface.c
@@ -77,7 +77,8 @@ ospf_sk_open(struct ospf_iface *ifa)
   sk->dport = OSPF_PROTO;
   sk->saddr = IPA_NONE;
 
-  sk->tos = IP_PREC_INTERNET_CONTROL;
+  sk->tos = ifa->cf->tx_tos;
+  sk->priority = ifa->cf->tx_priority;
   sk->rx_hook = ospf_rx_hook;
   sk->tx_hook = ospf_tx_hook;
   sk->err_hook = ospf_err_hook;
@@ -659,7 +660,10 @@ ospf_iface_reconfigure(struct ospf_iface *ifa, struct ospf_iface_patt *new)
   if (ifa->stub != new_stub)
     return 0;
 
-  if (new->real_bcast != ifa->cf->real_bcast)
+  /* Change of these options would require to reset the iface socket */
+  if ((new->real_bcast != ifa->cf->real_bcast) ||
+      (new->tx_tos != ifa->cf->tx_tos) ||
+      (new->tx_priority != ifa->cf->tx_priority))
     return 0;
 
   ifa->cf = new;
diff --git a/proto/ospf/ospf.h b/proto/ospf/ospf.h
index 7608225f..56ebcd31 100644
--- a/proto/ospf/ospf.h
+++ b/proto/ospf/ospf.h
@@ -800,6 +800,8 @@ struct ospf_iface_patt
   u32 priority;
   u32 voa;
   u32 vid;
+  int tx_tos;
+  int tx_priority;
   u16 rxbuf;
 #define OSPF_RXBUF_NORMAL 0
 #define OSPF_RXBUF_LARGE 1
diff --git a/proto/rip/config.Y b/proto/rip/config.Y
index cd4f30e7..ec82aa3d 100644
--- a/proto/rip/config.Y
+++ b/proto/rip/config.Y
@@ -27,7 +27,7 @@ CF_DECLS
 CF_KEYWORDS(RIP, INFINITY, METRIC, PORT, PERIOD, GARBAGE, TIMEOUT,
 	    MODE, BROADCAST, MULTICAST, QUIET, NOLISTEN, VERSION1, 
 	    AUTHENTICATION, NONE, PLAINTEXT, MD5,
-	    HONOR, NEVER, NEIGHBOR, ALWAYS,
+	    HONOR, NEVER, NEIGHBOR, ALWAYS, TX, PRIORITY,
 	    RIP_METRIC, RIP_TAG)
 
 %type <i> rip_mode rip_auth
@@ -76,6 +76,8 @@ rip_mode:
 rip_iface_item:
  | METRIC expr { RIP_IPATT->metric = $2; }
  | MODE rip_mode { RIP_IPATT->mode |= $2; }
+ | TX tos { RIP_IPATT->tx_tos = $2; }
+ | TX PRIORITY expr { RIP_IPATT->tx_priority = $3; }
  ;
 
 rip_iface_opts: 
@@ -94,6 +96,8 @@ rip_iface_init:
      add_tail(&RIP_CFG->iface_list, NODE this_ipatt);
      init_list(&this_ipatt->ipn_list);
      RIP_IPATT->metric = 1;
+     RIP_IPATT->tx_tos = IP_PREC_INTERNET_CONTROL;
+     RIP_IPATT->tx_priority = sk_priority_control;
    }
  ;
 
diff --git a/proto/rip/rip.c b/proto/rip/rip.c
index 341df7eb..c09eae79 100644
--- a/proto/rip/rip.c
+++ b/proto/rip/rip.c
@@ -707,7 +707,8 @@ new_iface(struct proto *p, struct iface *new, unsigned long flags, struct iface_
   if (new)
     {
       rif->sock->ttl = 1;
-      rif->sock->tos = IP_PREC_INTERNET_CONTROL;
+      rif->sock->tos = PATT->tx_tos;
+      rif->sock->priority = PATT->tx_priority;
       rif->sock->flags = SKF_LADDR_RX;
     }
 
@@ -1007,7 +1008,9 @@ static int
 rip_pat_compare(struct rip_patt *a, struct rip_patt *b)
 {
   return ((a->metric == b->metric) &&
-	  (a->mode == b->mode));
+	  (a->mode == b->mode) &&
+	  (a->tx_tos == b->tx_tos) &&
+	  (a->tx_priority == b->tx_priority));
 }
 
 static int
diff --git a/proto/rip/rip.h b/proto/rip/rip.h
index e0816d0e..2cce8c81 100644
--- a/proto/rip/rip.h
+++ b/proto/rip/rip.h
@@ -128,6 +128,8 @@ struct rip_patt {
 #define IM_QUIET 4
 #define IM_NOLISTEN 8
 #define IM_VERSION1 16
+  int tx_tos;
+  int tx_priority;
 };
 
 struct rip_proto_config {
-- 
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