lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Tue, 22 Jul 2014 19:57:20 -0700 (PDT) From: David Miller <davem@...emloft.net> To: stefan.sorensen@...ctralink.com Cc: richardcochran@...il.com, netdev@...r.kernel.org Subject: Re: [PATCH v2 net-next] dp83640: Fix receive timestamp race condition From: Stefan Sørensen <stefan.sorensen@...ctralink.com> Date: Tue, 22 Jul 2014 15:20:45 +0200 > When timestamping received packets, rx_timestamp_work may be scheduled > before the timestamps is received from the hardware resulting in the > packet beeing delivered without the timestamp. > > This is fixed by changing the receive timestamp path: > > On receiving a packet that need timestamping, the rxts list is > traversed. If a match is found, packet+timestamp are delivered, > otherwise the packet is added to a rx_queue. > > When a timestamp arrives rx_queue is traversed and if a matching > packet is found, it is delivered with the timestamp. Otherwise the > timestamp is added to the rxts list for matching with packets arriving > later. > > In case the hardware drops a timestamp, a workqueue regularly checks > the queue for old packets and delivers them without a timestamp. > > Signed-off-by: Stefan Sørensen <stefan.sorensen@...ctralink.com> Applied. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Powered by blists - more mailing lists