1// SPDX-License-Identifier: GPL-2.0 2// batch zerocopy test: 3// 4// send multiple packets, then read one range of all notifications. 5 6--send_omit_free // do not reuse send buffers with zerocopy 7 8`./defaults.sh` 9 10 0 socket(..., SOCK_STREAM, IPPROTO_TCP) = 3 11 +0 setsockopt(3, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0 12 +0 setsockopt(3, SOL_SOCKET, SO_ZEROCOPY, [1], 4) = 0 13 +0 bind(3, ..., ...) = 0 14 +0 listen(3, 1) = 0 15 16 +0 < S 0:0(0) win 32792 <mss 1000,sackOK,nop,nop,nop,wscale 7> 17 +0 > S. 0:0(0) ack 1 <mss 1460,nop,nop,sackOK,nop,wscale 8> 18 +0 < . 1:1(0) ack 1 win 257 19 20 +0 accept(3, ..., ...) = 4 21 +0 setsockopt(4, SOL_SOCKET, SO_MARK, [666], 4) = 0 22 23 +0 send(4, ..., 4000, MSG_ZEROCOPY) = 4000 24 +0 > P. 1:4001(4000) ack 1 25 +0 < . 1:1(0) ack 4001 win 257 26 27 +0 send(4, ..., 4000, MSG_ZEROCOPY) = 4000 28 +0 > P. 4001:8001(4000) ack 1 29 +0 < . 1:1(0) ack 8001 win 257 30 31 +0 recvmsg(4, {msg_name(...)=..., 32 msg_iov(1)=[{...,0}], 33 msg_flags=MSG_ERRQUEUE, 34 msg_control=[ 35 {cmsg_level=CMSG_LEVEL_IP, 36 cmsg_type=CMSG_TYPE_RECVERR, 37 cmsg_data={ee_errno=0, 38 ee_origin=SO_EE_ORIGIN_ZEROCOPY, 39 ee_type=0, 40 ee_code=SO_EE_CODE_ZEROCOPY_COPIED, 41 ee_info=0, 42 ee_data=1}} 43 ]}, MSG_ERRQUEUE) = 0 44