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Index: head/sys/netinet/tcp_input.c
===================================================================
--- head/sys/netinet/tcp_input.c
+++ head/sys/netinet/tcp_input.c
@@ -514,7 +514,7 @@
(tlen <= tp->t_maxseg) && \
(V_tcp_delack_enabled || (tp->t_flags & TF_NEEDSYN)))
-static void inline
+void inline
cc_ecnpkt_handler(struct tcpcb *tp, struct tcphdr *th, uint8_t iptos)
{
INP_WLOCK_ASSERT(tp->t_inpcb);
Index: head/sys/netinet/tcp_stacks/rack.c
===================================================================
--- head/sys/netinet/tcp_stacks/rack.c
+++ head/sys/netinet/tcp_stacks/rack.c
@@ -7715,6 +7715,10 @@
TCPSTAT_INC(tcps_ecn_ect1);
break;
}
+
+ /* Process a packet differently from RFC3168. */
+ cc_ecnpkt_handler(tp, th, iptos);
+
/* Congestion experienced. */
if (thflags & TH_ECE) {
rack_cong_signal(tp, th, CC_ECN);
Index: head/sys/netinet/tcp_var.h
===================================================================
--- head/sys/netinet/tcp_var.h
+++ head/sys/netinet/tcp_var.h
@@ -891,6 +891,7 @@
uint16_t nsegs, uint16_t type);
void cc_conn_init(struct tcpcb *tp);
void cc_post_recovery(struct tcpcb *tp, struct tcphdr *th);
+void cc_ecnpkt_handler(struct tcpcb *tp, struct tcphdr *th, uint8_t iptos);
void cc_cong_signal(struct tcpcb *tp, struct tcphdr *th, uint32_t type);
#ifdef TCP_HHOOK
void hhook_run_tcp_est_in(struct tcpcb *tp,

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