netinet/tcp.h: update tcp_info for linux v5.5

see

  linux commit 480274787d7e3458bc5a7cfbbbe07033984ad711
  tcp: add TCP_INFO status for failed client TFO

diff --git a/include/netinet/tcp.h b/include/netinet/tcp.h
index 44a007a..db3904a 100644 (file)
--- a/include/netinet/tcp.h
+++ b/include/netinet/tcp.h
@@ -181,6 +181,13 @@ struct tcphdr {
 #define TCP_CA_Recovery                3
 #define TCP_CA_Loss            4
 
+enum tcp_fastopen_client_fail {
+       TFO_STATUS_UNSPEC,
+       TFO_COOKIE_UNAVAILABLE,
+       TFO_DATA_NOT_ACKED,
+       TFO_SYN_RETRANSMITTED,
+};
+
 struct tcp_info {
        uint8_t tcpi_state;
        uint8_t tcpi_ca_state;
@@ -189,7 +196,7 @@ struct tcp_info {
        uint8_t tcpi_backoff;
        uint8_t tcpi_options;
        uint8_t tcpi_snd_wscale : 4, tcpi_rcv_wscale : 4;
-       uint8_t tcpi_delivery_rate_app_limited : 1;
+       uint8_t tcpi_delivery_rate_app_limited : 1, tcpi_fastopen_client_fail : 2;
        uint32_t tcpi_rto;
        uint32_t tcpi_ato;
        uint32_t tcpi_snd_mss;