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. The large chunk itself should be packetized as 4// usual. 5`./defaults.sh 6` 7 8// Initialize connection 9 0 socket(..., SOCK_STREAM, IPPROTO_TCP) = 3 10 +0 setsockopt(3, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0 11 +0 bind(3, ..., ...) = 0 12 +0 listen(3, 1) = 0 13 14 +0 < S 0:0(0) win 32792 <mss 1000,sackOK,nop,nop,nop,wscale 10> 15 +0 > S. 0:0(0) ack 1 <mss 1460,nop,nop,sackOK,nop,wscale 8> 16 +.01 < . 1:1(0) ack 1 win 514 17 18 +0 accept(3, ..., ...) = 4 19 20// Write a 10400B chunk to fill the ICW, and have a 400 byte skb sitting on 21// the tail. 22 +0 write(4, ..., 10400) = 10400 23 24// Write another 10040B chunk with no coalescing options. 25 +0 send(4, ..., 10400, MSG_EOR) = 10400 26 27// Write a 2KB chunk. This chunk should not be appended to the packets created 28// the previous chunk. 29 +0 write(4, ..., 2000) = 2000 30 31 +0 > P. 1:10001(10000) ack 1 32+.001 < . 1:1(0) ack 10001 win 514 33// Now we have enough room to send out the 2 x 400B packets out. 34 +0 > P. 10001:20801(10800) ack 1 35+.001 < . 1:1(0) ack 20801 win 514 36// This 2KB packet should be sent alone. 37 +0 > P. 20801:22801(2000) ack 1 38+.001 < . 1:1(0) ack 22801 win 514 39