netinet/tcp.h: add TCP_TX_DELAY from linux v5.3

see

  linux commit a842fe1425cb20f457abd3f8ef98b468f83ca98b
  tcp: add optional per socket transmit delay

diff --git a/include/netinet/tcp.h b/include/netinet/tcp.h
index adcd45e7f2e3a8e3fe91a2cab6aa53749fd64a7d..69de9d5a26366cfd3b541d82b6908928ef2024d4 100644 (file)
--- a/include/netinet/tcp.h
+++ b/include/netinet/tcp.h
@@ -38,6 +38,7 @@
 #define TCP_FASTOPEN_NO_COOKIE 34
 #define TCP_ZEROCOPY_RECEIVE   35
 #define TCP_INQ          36
+#define TCP_TX_DELAY     37
 
 #define TCP_CM_INQ TCP_INQ