xnu-4903.241.1.tar.gz

[apple/xnu.git] / bsd / netinet / tcp_var.h

diff --git a/bsd/netinet/tcp_var.h b/bsd/netinet/tcp_var.h
index 4fde35c904f95d0be2d3bfbb0078c7ee6425a01b..49e3f973117d3a4b81a1f68752ef620b512455a4 100644 (file)
--- a/bsd/netinet/tcp_var.h
+++ b/bsd/netinet/tcp_var.h
@@ -620,6 +620,8 @@ struct tcpcb {
        SLIST_HEAD(,tcp_notify_ack_marker) t_notify_ack; /* state for notifying data acknowledgements */
        u_int32_t       t_recv_throttle_ts;     /* TS for start of recv throttle */
        u_int32_t       t_rxt_minimum_timeout;  /* minimum retransmit timeout in ms */
+       uint32_t        t_challengeack_last;    /* last time challenge ACK was sent per sec */
+       uint32_t        t_challengeack_count;   /* # of challenge ACKs already sent per sec */
 };
 
 #define IN_FASTRECOVERY(tp)    (tp->t_flags & TF_FASTRECOVERY)
@@ -718,9 +720,8 @@ extern int tcprexmtthresh;
        mptcp_reset_rexmit_state((_tp_)); \
 } while(0);
 
-#define        TCP_AUTORCVBUF_MAX(_ifp_) (((_ifp_) != NULL && \
-       ((_ifp_)->if_eflags & IFEF_3CA)) ? tcp_autorcvbuf_max_ca : \
-       tcp_autorcvbuf_max)
+#define        TCP_AUTORCVBUF_MAX(_ifp_) (((_ifp_) != NULL && (IFNET_IS_CELLULAR((_ifp_))) && ((_ifp_)->if_eflags & IFEF_3CA)) ? \
+               (tcp_autorcvbuf_max << 1) : tcp_autorcvbuf_max)
 
 enum tcp_cc_event {
        TCP_CC_CWND_INIT,       /* 0 */
@@ -1003,9 +1004,12 @@ struct   tcpstat {
        u_int32_t       tcps_badsyn;            /* bogus SYN, e.g. premature ACK */
        u_int32_t       tcps_mturesent;         /* resends due to MTU discovery */
        u_int32_t       tcps_listendrop;        /* listen queue overflows */
+       u_int32_t       tcps_synchallenge;      /* challenge ACK due to bad SYN */
+       u_int32_t       tcps_rstchallenge;      /* challenge ACK due to bad RST */
 
        /* new stats from FreeBSD 5.4 sync up */
        u_int32_t       tcps_minmssdrops;       /* average minmss too low drops */
+
        u_int32_t       tcps_sndrexmitbad;      /* unnecessary packet retransmissions */
        u_int32_t       tcps_badrst;            /* ignored RSTs in the window */
 
@@ -1202,6 +1206,7 @@ struct    tcpstat {
        u_int32_t       tcps_mptcp_back_to_wifi;        /* Total number of connections that succeed to move traffic away from cell (when starting on cell) */
        u_int32_t       tcps_mptcp_wifi_proxy;          /* Total number of new subflows that fell back to regular TCP on cell */
        u_int32_t       tcps_mptcp_cell_proxy;          /* Total number of new subflows that fell back to regular TCP on WiFi */
+       u_int32_t       tcps_mptcp_triggered_cell;      /* Total number of times an MPTCP-connection triggered cell bringup */
 };
 
 
@@ -1422,7 +1427,37 @@ struct  xtcpcb_n {
 #define        TCP_RTTVAR_SCALE        16      /* multiplier for rttvar; 4 bits */
 #define        TCP_RTTVAR_SHIFT        4       /* shift for rttvar; 4 bits */
 #define        TCP_DELTA_SHIFT         2       /* see tcp_input.c */
-       
+
+
+/*
+ * TCP structure with information that gives insight into forward progress on an interface,
+ * exported to user-land via sysctl(3).
+ */
+struct  xtcpprogress_indicators {
+       u_int32_t       xp_numflows;            /* Total number of flows */
+       u_int32_t       xp_conn_probe_fails;    /* Count of connection failures */
+       u_int32_t       xp_read_probe_fails;    /* Count of read probe failures */
+       u_int32_t       xp_write_probe_fails;   /* Count of write failures */
+       u_int32_t       xp_recentflows;         /* Total of "recent" flows */
+       u_int32_t       xp_recentflows_unacked; /* Total of "recent" flows with unacknowledged data */
+       u_int64_t       xp_recentflows_rxbytes; /* Total of "recent" flows received bytes */
+       u_int64_t       xp_recentflows_txbytes; /* Total of "recent" flows transmitted bytes */
+       u_int64_t       xp_recentflows_rxooo;   /* Total of "recent" flows received out of order bytes */
+       u_int64_t       xp_recentflows_rxdup;   /* Total of "recent" flows received duplicate bytes */
+       u_int64_t       xp_recentflows_retx;    /* Total of "recent" flows retransmitted bytes */
+       u_int64_t       xp_reserved1;                   /* Expansion */
+       u_int64_t       xp_reserved2;                   /* Expansion */
+       u_int64_t       xp_reserved3;                   /* Expansion */
+       u_int64_t       xp_reserved4;                   /* Expansion */
+};
+
+struct tcpprogressreq {
+       u_int64_t       ifindex;                                /* Interface index for progress indicators */
+       u_int64_t       recentflow_maxduration; /* In mach_absolute_time, max duration for flow to be counted as "recent" */
+       u_int64_t       xp_reserved1;                   /* Expansion */
+       u_int64_t       xp_reserved2;                   /* Expansion */
+};
+
 #endif /* PRIVATE */
 
 #pragma pack()
@@ -1505,7 +1540,6 @@ extern int tcp_ecn_outbound;
 extern int tcp_ecn_inbound;
 extern u_int32_t tcp_do_autorcvbuf;
 extern u_int32_t tcp_autorcvbuf_max;
-extern u_int32_t tcp_autorcvbuf_max_ca;
 extern u_int32_t tcp_autorcvbuf_inc_shift;
 extern int tcp_recv_bg;
 
@@ -1575,8 +1609,7 @@ void       tcp_reset_stretch_ack(struct tcpcb *tp);
 extern void tcp_get_ports_used(u_int32_t, int, u_int32_t, bitstr_t *);
 uint32_t tcp_count_opportunistic(unsigned int ifindex, u_int32_t flags);
 uint32_t tcp_find_anypcb_byaddr(struct ifaddr *ifa);
-void    tcp_set_max_rwinscale(struct tcpcb *tp, struct socket *so,
-    u_int32_t maxrcvbuf);
+void tcp_set_max_rwinscale(struct tcpcb *tp, struct socket *so, struct ifnet *ifp);
 struct bwmeas* tcp_bwmeas_alloc(struct tcpcb *tp);
 void tcp_bwmeas_free(struct tcpcb *tp);
 extern int32_t timer_diff(uint32_t t1, uint32_t toff1, uint32_t t2, uint32_t toff2);