Author: tuexen
Date: Tue Dec 31 14:23:52 2019
New Revision: 356226
URL: https://svnweb.freebsd.org/changeset/base/356226

Log:
  Clear the flag indicating that the last received packet was marked CE also
  in the case where a packet not marked was received.
  
  Submitted by:         Richard Scheffenegger
  Reviewed by:          rgrimes@, tuexen@
  MFC after:            1 week
  Differential Revision:        https://reviews.freebsd.org/D19143

Modified:
  head/sys/netinet/tcp_input.c

Modified: head/sys/netinet/tcp_input.c
==============================================================================
--- head/sys/netinet/tcp_input.c        Tue Dec 31 13:56:48 2019        
(r356225)
+++ head/sys/netinet/tcp_input.c        Tue Dec 31 14:23:52 2019        
(r356226)
@@ -522,14 +522,15 @@ cc_ecnpkt_handler(struct tcpcb *tp, struct tcphdr *th,
        if (CC_ALGO(tp)->ecnpkt_handler != NULL) {
                switch (iptos & IPTOS_ECN_MASK) {
                case IPTOS_ECN_CE:
-                   tp->ccv->flags |= CCF_IPHDR_CE;
-                   break;
+                       tp->ccv->flags |= CCF_IPHDR_CE;
+                       break;
                case IPTOS_ECN_ECT0:
-                   tp->ccv->flags &= ~CCF_IPHDR_CE;
-                   break;
+                       /* FALLTHROUGH */
                case IPTOS_ECN_ECT1:
-                   tp->ccv->flags &= ~CCF_IPHDR_CE;
-                   break;
+                       /* FALLTHROUGH */
+               case IPTOS_ECN_NOTECT:
+                       tp->ccv->flags &= ~CCF_IPHDR_CE;
+                       break;
                }
 
                if (th->th_flags & TH_CWR)
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