FreeBSD source tree https://cgit-dev.freebsd.org/src-test/atom?h=main 2020-10-15T11:44:28Z 2020-10-15T11:44:28Z Wei Hu whu@FreeBSD.org 2020-10-15T11:44:28Z urn:sha1:b3460f44524b145c6c8a760ebe65052560a810bf The try lock loop in HN_LOCK put the thread spinning on cpu if the lock is not available. It is possible to cause deadlock if the thread holding the lock is sleeping. Relinquish the cpu to work around this problem even it doesn't completely solve the issue. The priority inversion could cause the livelock no matter how less likely it could happen. A more complete solution may be needed in the future. Reported by: Microsoft, Netapp MFC after: 2 weeks Sponsored by: Microsoft 2020-02-26T14:26:36Z Pawel Biernacki kaktus@FreeBSD.org 2020-02-26T14:26:36Z urn:sha1:7029da5c36f2d3cf6bb6c81bf551229f416399e8 r357614 added CTLFLAG_NEEDGIANT to make it easier to find nodes that are still not MPSAFE (or already are but aren’t properly marked). Use it in preparation for a general review of all nodes. This is non-functional change that adds annotations to SYSCTL_NODE and SYSCTL_PROC nodes using one of the soon-to-be-required flags. Mark all obvious cases as MPSAFE. All entries that haven't been marked as MPSAFE before are by default marked as NEEDGIANT Approved by: kib (mentor, blanket) Commented by: kib, gallatin, melifaro Differential Revision: https://reviews.freebsd.org/D23718 2020-02-24T21:07:30Z Gleb Smirnoff glebius@FreeBSD.org 2020-02-24T21:07:30Z urn:sha1:e87c4940156c9a218cab4fd35f4d487dc57e7aa3 switch over to opt-in instead of opt-out for epoch. Instead of IFF_NEEDSEPOCH, provide IFF_KNOWSEPOCH. If driver marks itself with IFF_KNOWSEPOCH, then ether_input() would not enter epoch when processing its packets. Now this will create recursive entrance in epoch in >90% network drivers, but will guarantee safeness of the transition. Mark several tested drivers as IFF_KNOWSEPOCH. Reviewed by: hselasky, jeff, bz, gallatin Differential Revision: https://reviews.freebsd.org/D23674 2020-01-23T01:41:09Z Gleb Smirnoff glebius@FreeBSD.org 2020-01-23T01:41:09Z urn:sha1:0921628ddce1c29441ddb694e04e9c1e9fe356c8 supposedly may call into ether_input() without network epoch. They all need to be reviewed before 13.0-RELEASE. Some may need be fixed. The flag is not planned to be used in the kernel for a long time. 2019-12-30T09:22:52Z Hans Petter Selasky hselasky@FreeBSD.org 2019-12-30T09:22:52Z urn:sha1:a3b413af0acf8af2fd1d9f82969f092548a96be3 PR: 242891 MFC after: 1 week Sponsored by: Mellanox Technologies 2019-07-09T08:21:14Z Wei Hu whu@FreeBSD.org 2019-07-09T08:21:14Z urn:sha1:23a499203c5b3fd74f781d1383269a6e168588cf Submitted by: whu MFC after: 2 weeks Sponsored by: Microsoft 2019-07-09T07:24:18Z Wei Hu whu@FreeBSD.org 2019-07-09T07:24:18Z urn:sha1:ace5ce7e701e5a98c23f820d4f126e5c265aa667 Add VMBus protocol version 4.0. and 5.0 to support Windows 10 and newer HyperV hosts. For VMBus 4.0 and newer HyperV, the netvsc gpadl teardown must be done after vmbus close. Submitted by: whu MFC after: 2 weeks Sponsored by: Microsoft 2018-10-22T11:23:51Z Wei Hu whu@FreeBSD.org 2018-10-22T11:23:51Z urn:sha1:f0319886caef01c41aaebbdf6c7dd8312a2ce085 PR: 231797 Submitted by: whu Reviewed by: dexuan Obtained from: Kevin Morse MFC after: 3 days Sponsored by: Microsoft Differential Revision: https://bugs.freebsd.org/bugzilla/attachment.cgi?id=198333&action=diff 2018-07-17T21:05:08Z Dexuan Cui dexuan@FreeBSD.org 2018-07-17T21:05:08Z urn:sha1:d76fb49fd89f7b783798a2a2b76a03c9f988621f Submitted by: hselasky Reviewed by: dexuan MFC after: 3 days Differential Revision: https://reviews.freebsd.org/D16139 2018-05-26T14:14:56Z Eric van Gyzen vangyzen@FreeBSD.org 2018-05-26T14:14:56Z urn:sha1:7898a1f4c47882ea07b12a36128c1cc3101574b5 omcast was used without being initialized in the non-multicast case. The only effect was that the interface's multicast output counter could be incorrect. Reported by: Coverity CID: 1379662 MFC after: 3 days Sponsored by: Dell EMC