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1// SPDX-License-Identifier: GPL-2.02// send with MSG_ZEROCOPY on a non-established socket3//4// verify that a send in state TCP_CLOSE correctly aborts the zerocopy5// operation, specifically it does not increment the zerocopy counter.6//7// First send on a closed socket and wait for (absent) notification.8// Then connect and send and verify that notification nr. is zero.9 10`./defaults.sh`11 12 0 socket(..., SOCK_STREAM, IPPROTO_TCP) = 413 +0 setsockopt(4, SOL_SOCKET, SO_ZEROCOPY, [1], 4) = 014 15 +0 send(4, ..., 4000, MSG_ZEROCOPY) = -1 EPIPE (Broken pipe)16 17 +0.1 recvmsg(4, {msg_name(...)=...,18 msg_iov(1)=[{...,0}],19 msg_flags=MSG_ERRQUEUE,20 msg_control=[]}, MSG_ERRQUEUE) = -1 EAGAIN (Resource temporarily unavailable)21 22 +0...0 connect(4, ..., ...) = 023 24 +0 > S 0:0(0) <mss 1460,sackOK,TS val 0 ecr 0,nop,wscale 8>25 +0 < S. 0:0(0) ack 1 win 32792 <mss 1000,sackOK,nop,nop,nop,wscale 7>26 +0 > . 1:1(0) ack 127 28 +0 send(4, ..., 4000, MSG_ZEROCOPY) = 400029 +0 > P. 1:4001(4000) ack 130 +0 < . 1:1(0) ack 4001 win 25731 32 +0 recvmsg(4, {msg_name(...)=...,33 msg_iov(1)=[{...,0}],34 msg_flags=MSG_ERRQUEUE,35 msg_control=[36 {cmsg_level=CMSG_LEVEL_IP,37 cmsg_type=CMSG_TYPE_RECVERR,38 cmsg_data={ee_errno=0,39 ee_origin=SO_EE_ORIGIN_ZEROCOPY,40 ee_type=0,41 ee_code=SO_EE_CODE_ZEROCOPY_COPIED,42 ee_info=0,43 ee_data=0}}44 ]}, MSG_ERRQUEUE) = 045