[PKT_SCHED] netem: allow random reordering (with fix)

Here is a fixed up version of the reorder feature of netem.
It is the same as the earlier patch plus with the bugfix from Julio merged in.
Has expected backwards compatibility behaviour.

Go ahead and merge this one, the TCP strangeness I was seeing was due
to the reordering bug, and previous version of TSO patch.

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 8 insertions, 1 deletions

diff --git a/include/linux/pkt_sched.h b/include/linux/pkt_sched.h
index 73d84c071cb1..1d9da36eb9db 100644
--- a/include/linux/pkt_sched.h
+++ b/include/linux/pkt_sched.h
@@ -427,6 +427,7 @@ enum
         TCA_NETEM_UNSPEC,
         TCA_NETEM_CORR,
         TCA_NETEM_DELAY_DIST,
+        TCA_NETEM_REORDER,
         __TCA_NETEM_MAX,
 };
 
@@ -437,7 +438,7 @@ struct tc_netem_qopt
         __u32   latency;        /* added delay (us) */
         __u32   limit;          /* fifo limit (packets) */
         __u32   loss;           /* random packet loss (0=none ~0=100%) */
-        __u32   gap;            /* re-ordering gap (0 for delay all) */
+        __u32   gap;            /* re-ordering gap (0 for none) */
         __u32   duplicate;      /* random packet dup  (0=none ~0=100%) */
         __u32   jitter;         /* random jitter in latency (us) */
 };
@@ -449,6 +450,12 @@ struct tc_netem_corr
         __u32   dup_corr;       /* duplicate correlation  */
 };
 
+struct tc_netem_reorder
+{
+        __u32   probability;
+        __u32   correlation;
+};
+
 #define NETEM_DIST_SCALE        8192
 
 #endif