1// SPDX-License-Identifier: GPL-2.0 2// Test TCP does not append any data from consequent writes to the tail 3// skb created for the chunk. 4`./defaults.sh 5` 6 7// Initialize connection 8 0 socket(..., SOCK_STREAM, IPPROTO_TCP) = 3 9 +0 setsockopt(3, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0 10 +0 bind(3, ..., ...) = 0 11 +0 listen(3, 1) = 0 12 13 +0 < S 0:0(0) win 32792 <mss 1000,sackOK,nop,nop,nop,wscale 10> 14 +0 > S. 0:0(0) ack 1 <mss 1460,nop,nop,sackOK,nop,wscale 8> 15 +.01 < . 1:1(0) ack 1 win 514 16 17 +0 accept(3, ..., ...) = 4 18 19// Write a 10400B chunk to fill the ICW, and have a 400 byte skb sitting on 20// the tail. 21 +0 write(4, ..., 10400) = 10400 22 23// Write a 400B chunk with no coalescing options. 24 +0 send(4, ..., 400, MSG_EOR) = 400 25 26// This chunk should not be appended to the skbs created for the previous chunk. 27 +0 write(4, ..., 10000) = 10000 28 29 +0 > P. 1:10001(10000) ack 1 30+.001 < . 1:1(0) ack 10001 win 514 31// Now we have enough room to send out the 2 x 400B packets out. 32 +0 > P. 10001:10801(800) ack 1 33 +0 > P. 10801:20801(10000) ack 1 34+.001 < . 1:1(0) ack 10401 win 514 35+.001 < . 1:1(0) ack 10801 win 514 36+.001 < . 1:1(0) ack 20801 win 514 37