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authorPin-Yen Lin <treapking@google.com>2018-08-14 14:23:25 +0800
committerEarl Ou <shunhsingou@google.com>2018-09-11 06:29:32 +0000
commit36276ba2392f030250fa9dd1e1ea28a026bc51c6 (patch)
tree432bffacd68395f8ab9514fdd00f68ebbe33cb2e /src/dev/arm/SConscript
parent34b16aa817238c3db88462dc31173faf27cfdcba (diff)
downloadgem5-36276ba2392f030250fa9dd1e1ea28a026bc51c6.tar.xz
net: Fix a bug when receiving fragamented packets
In the previous implementation, the function EtherTap::recvReal will only read one packet when received some ``interrupt'' (explicitly, when async_IO set to true). When someone tries to send a large message to the simulated device, the message will be divided to several packets due to packet fragmentation. In this situation recvReal will only read one packet and left the other packets in the buffer. This significantly increases the networking latency. So before reading from socket, I change the socket into non-blocking mode and keep reading from it until there's no packet left. Change-Id: Ieb94a8532cd3994862b6f3eb9474caf7ccf617da Reviewed-on: https://gem5-review.googlesource.com/12338 Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-by: Jason Lowe-Power <jason@lowepower.com> Maintainer: Jason Lowe-Power <jason@lowepower.com>
Diffstat (limited to 'src/dev/arm/SConscript')
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