src/sys/dev/xen/netback, branch stable/9

Merge r256868,257276-257277,257515,257913 from head. These are fixes

2014-07-18T18:00:00Z

required to make Xen buildable w/o INET. This is the same as r259541 in stable/10 by glebius.

MFC r242889 (by rdivacky):

2012-11-15T07:48:44Z

Change the XNB_ASSERT from a statement expression to do-while(0) as its result is never used. MFC r242934: Redo r242889, now using the method from projects/amd64_xen_pv r240747. Reminded by: kib

MFC 230587, 230916

2012-02-14T18:00:37Z

Xen netback driver rewrite. r230587 | ken | 2012-01-26 09:35:09 -0700 (Thu, 26 Jan 2012) | 38 lines Xen netback driver rewrite. share/man/man4/Makefile, share/man/man4/xnb.4, sys/dev/xen/netback/netback.c, sys/dev/xen/netback/netback_unit_tests.c: Rewrote the netback driver for xen to attach properly via newbus and work properly in both HVM and PVM mode (only HVM is tested). Works with the in-tree FreeBSD netfront driver or the Windows netfront driver from SuSE. Has not been extensively tested with a Linux netfront driver. Does not implement LRO, TSO, or polling. Includes unit tests that may be run through sysctl after compiling with XNB_DEBUG defined. sys/dev/xen/blkback/blkback.c, sys/xen/interface/io/netif.h: Comment elaboration. sys/kern/uipc_mbuf.c: Fix page fault in kernel mode when calling m_print() on a null mbuf. Since m_print() is only used for debugging, there are no performance concerns for extra error checking code. sys/kern/subr_scanf.c: Add the "hh" and "ll" width specifiers from C99 to scanf(). A few callers were already using "ll" even though scanf() was handling it as "l". Submitted by: Alan Somers Submitted by: John Suykerbuyk Sponsored by: Spectra Logic Reviewed by: ken r230916 | ken | 2012-02-02 10:54:35 -0700 (Thu, 02 Feb 2012) | 13 lines Fix the netback driver build for i386. netback.c: Add missing VM includes. xen/xenvar.h, xen/xenpmap.h: Move some XENHVM macros from to on i386 to match the amd64 headers. conf/files: Add netback to the build. Submitted by: jhb

Fix a few more SYSCTL_PROC() that were missing a CTLFLAG type specifier.

2011-01-19T00:57:58Z

The proper fix for the delayed SCTP checksum is to

2010-03-12T22:58:52Z

have the delayed function take an argument as to the offset to the SCTP header. This allows it to work for V4 and V6. This of course means changing all callers of the function to either pass the header len, if they have it, or create it (ip_hl << 2 or sizeof(ip6_hdr)). PR: 144529 MFC after: 2 weeks

Temporarily revert the new-bus locking for 8.0 release. It will be

2009-08-20T19:17:53Z

reintroduced after HEAD is reopened for commits by re@. Approved by: re (kib), attilio

Make the newbus subsystem Giant free by adding the new newbus sxlock.

2009-08-02T14:28:40Z

The newbus lock is responsible for protecting newbus internIal structures, device states and devclass flags. It is necessary to hold it when all such datas are accessed. For the other operations, softc locking should ensure enough protection to avoid races. Newbus lock is automatically held when virtual operations on the device and bus are invoked when loading the driver or when the suspend/resume take place. For other 'spourious' operations trying to access/modify the newbus topology, newbus lock needs to be automatically acquired and dropped. For the moment Giant is also acquired in some key point (modules subsystem) in order to avoid problems before the 8.0 release as module handlers could make assumptions about it. This Giant locking should go just after the release happens. Please keep in mind that the public interface can be expanded in order to provide more support, if there are really necessities at some point and also some bugs could arise as long as the patch needs a bit of further testing. Bump __FreeBSD_version in order to reflect the newbus lock introduction. Reviewed by: ed, hps, jhb, imp, mav, scottl No answer by: ariff, thompsa, yongari Tested by: pho, G. Trematerra , Brandon Gooch Sponsored by: Yahoo! Incorporated Approved by: re (ksmith)

Adds support for SCTP checksum offload. This means

2009-02-03T11:00:43Z

we, like TCP and UDP, move the checksum calculation into the IP routines when there is no hardware support we call into the normal SCTP checksum routine. The next round of SCTP updates will use this functionality. Of course the IGB driver needs a few updates to support the new intel controller set that actually does SCTP csum offload too. Reviewed by: gnn, rwatson, kmacy

Import Xen paravirtual drivers.

2008-08-12T20:01:57Z

MFC after: 2 weeks