[PATCH] Fix IPv6 ECN marking in RED

[Patrick McHardy <kaber@xxxxxxxxx>]

Hi Dave,

this patch fixes IPv6 ECN marking in RED and changes it to use the
functions from net/inet_ecn.h. Currently a local variable is marked
instead of the packet.

Best regards
Patrick

# This is a BitKeeper generated diff -Nru style patch.
#
# ChangeSet
#   2004/03/06 01:06:26+01:00 kaber@xxxxxxxxx 
#   Fix IPv6 ECN marking in RED
# 
# net/sched/sch_red.c
#   2004/03/06 01:03:45+01:00 kaber@xxxxxxxxx +4 -19
#   Fix IPv6 ECN marking in RED
# 
diff -Nru a/net/sched/sch_red.c b/net/sched/sch_red.c
--- a/net/sched/sch_red.c       Sat Mar  6 01:07:33 2004
+++ b/net/sched/sch_red.c       Sat Mar  6 01:07:33 2004
@@ -41,9 +41,6 @@
 #include <net/pkt_sched.h>
 #include <net/inet_ecn.h>
 
-#define RED_ECN_ECT  0x02
-#define RED_ECN_CE   0x01
-
 
 /*     Random Early Detection (RED) algorithm.
        =======================================
@@ -165,28 +162,16 @@
 
        switch (skb->protocol) {
        case __constant_htons(ETH_P_IP):
-       {
-               u8 tos = skb->nh.iph->tos;
-
-               if (!(tos & RED_ECN_ECT))
+               if (!INET_ECN_is_capable(skb->nh.iph->tos))
                        return 0;
-
-               if (!(tos & RED_ECN_CE))
+               if (INET_ECN_is_not_ce(skb->nh.iph->tos))
                        IP_ECN_set_ce(skb->nh.iph);
-
                return 1;
-       }
-
        case __constant_htons(ETH_P_IPV6):
-       {
-               u32 label = *(u32*)skb->nh.raw;
-
-               if (!(label & __constant_htonl(RED_ECN_ECT<<20)))
+               if (!INET_ECN_is_capable(ip6_get_dsfield(skb->nh.ipv6h)))
                        return 0;
-               label |= __constant_htonl(RED_ECN_CE<<20);
+               IP6_ECN_set_ce(skb->nh.ipv6h);
                return 1;
-       }
-
        default:
                return 0;
        }