Author: tuexen
Date: Mon May  4 23:05:11 2020
New Revision: 360645
URL: https://svnweb.freebsd.org/changeset/base/360645

Log:
  Add net epoch support back, which was taken out by accident in
  https://svnweb.freebsd.org/changeset/base/360639
  
  Reviewed by:          rrs
  Sponsored by:         Netflix, Inc.
  Differential Revision:        https://reviews.freebsd.org/D24694

Modified:
  head/sys/netinet/tcp_stacks/rack.c

Modified: head/sys/netinet/tcp_stacks/rack.c
==============================================================================
--- head/sys/netinet/tcp_stacks/rack.c  Mon May  4 23:02:58 2020        
(r360644)
+++ head/sys/netinet/tcp_stacks/rack.c  Mon May  4 23:05:11 2020        
(r360645)
@@ -12012,6 +12012,7 @@ rack_output(struct tcpcb *tp)
        hw_tls = (so->so_snd.sb_flags & SB_TLS_IFNET) != 0;
 #endif
 
+       NET_EPOCH_ASSERT();
        INP_WLOCK_ASSERT(inp);
 #ifdef TCP_OFFLOAD
        if (tp->t_flags & TF_TOE)
@@ -14212,6 +14213,7 @@ static int
 rack_set_sockopt(struct socket *so, struct sockopt *sopt,
     struct inpcb *inp, struct tcpcb *tp, struct tcp_rack *rack)
 {
+       struct epoch_tracker et;
        uint64_t val;
        int32_t error = 0, optval;
        uint16_t ca, ss;
@@ -14719,7 +14721,9 @@ rack_set_sockopt(struct socket *so, struct sockopt *so
                if (tp->t_flags & TF_DELACK) {
                        tp->t_flags &= ~TF_DELACK;
                        tp->t_flags |= TF_ACKNOW;
+                       NET_EPOCH_ENTER(et);
                        rack_output(tp);
+                       NET_EPOCH_EXIT(et);
                }
                break;
 
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