1// SPDX-License-Identifier: GPL-2.0 2// send with MSG_ZEROCOPY on a non-established socket 3// 4// verify that a send in state TCP_CLOSE correctly aborts the zerocopy 5// 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) = 4 13 +0 setsockopt(4, SOL_SOCKET, SO_ZEROCOPY, [1], 4) = 0 14 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, ..., ...) = 0 23 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 1 27 28 +0 send(4, ..., 4000, MSG_ZEROCOPY) = 4000 29 +0 > P. 1:4001(4000) ack 1 30 +0 < . 1:1(0) ack 4001 win 257 31 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) = 0 45