1*0b8f164eSKuniyuki Iwashima// SPDX-License-Identifier: GPL-2.0 2*0b8f164eSKuniyuki Iwashima// 3*0b8f164eSKuniyuki Iwashima// Basic TFO server test 4*0b8f164eSKuniyuki Iwashima// 5*0b8f164eSKuniyuki Iwashima// Test TFO_SERVER_COOKIE_NOT_REQD flag on receiving 6*0b8f164eSKuniyuki Iwashima// SYN with data but without Fast Open cookie option. 7*0b8f164eSKuniyuki Iwashima 8*0b8f164eSKuniyuki Iwashima`./defaults.sh 9*0b8f164eSKuniyuki Iwashima ./set_sysctls.py /proc/sys/net/ipv4/tcp_fastopen=0x202` 10*0b8f164eSKuniyuki Iwashima 11*0b8f164eSKuniyuki Iwashima 0 socket(..., SOCK_STREAM|SOCK_NONBLOCK, IPPROTO_TCP) = 3 12*0b8f164eSKuniyuki Iwashima +0 setsockopt(3, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0 13*0b8f164eSKuniyuki Iwashima +0 bind(3, ..., ...) = 0 14*0b8f164eSKuniyuki Iwashima +0 listen(3, 1) = 0 15*0b8f164eSKuniyuki Iwashima +0 setsockopt(3, SOL_TCP, TCP_FASTOPEN, [1], 4) = 0 16*0b8f164eSKuniyuki Iwashima 17*0b8f164eSKuniyuki Iwashima// Since TFO_SERVER_COOKIE_NOT_REQD, a TFO socket will be created with 18*0b8f164eSKuniyuki Iwashima// the data accepted. 19*0b8f164eSKuniyuki Iwashima +0 < S 0:1000(1000) win 32792 <mss 1460,sackOK,nop,nop> 20*0b8f164eSKuniyuki Iwashima +0 > S. 0:0(0) ack 1001 <mss 1460,nop,nop,sackOK> 21*0b8f164eSKuniyuki Iwashima +0 accept(3, ..., ...) = 4 22*0b8f164eSKuniyuki Iwashima +0 %{ assert (tcpi_options & TCPI_OPT_SYN_DATA) != 0, tcpi_options }% 23*0b8f164eSKuniyuki Iwashima +0 read(4, ..., 1024) = 1000 24*0b8f164eSKuniyuki Iwashima 25*0b8f164eSKuniyuki Iwashima// Data After SYN will be accepted too. 26*0b8f164eSKuniyuki Iwashima +0 < . 1001:2001(1000) ack 1 win 5840 27*0b8f164eSKuniyuki Iwashima +0 > . 1:1(0) ack 2001 28*0b8f164eSKuniyuki Iwashima 29*0b8f164eSKuniyuki Iwashima// Should change the implementation later to set the SYN flag as well. 30*0b8f164eSKuniyuki Iwashima +0 read(4, ..., 1024) = 1000 31*0b8f164eSKuniyuki Iwashima +0 write(4, ..., 1000) = 1000 32*0b8f164eSKuniyuki Iwashima +0 > P. 1:1001(1000) ack 2001 33