Pablo Neira Ayuso 3d058d7bc2 netfilter: rework user-space expectation helper support ... This partially reworks bc01befdcf which added userspace expectation support. This patch removes the nf_ct_userspace_expect_list since now we force to use the new iptables CT target feature to add the helper extension for conntracks that have attached expectations from userspace. A new version of the proof-of-concept code to implement userspace helpers from userspace is available at: http://people.netfilter.org/pablo/userspace-conntrack-helpers/nf-ftp-helper-POC.tar.bz2 This patch also modifies the CT target to allow to set the conntrack's userspace helper status flags. This flag is used to tell the conntrack system to explicitly allocate the helper extension. This helper extension is useful to link the userspace expectations with the master conntrack that is being tracked from one userspace helper. This feature fixes a problem in the current approach of the userspace helper support. Basically, if the master conntrack that has got a userspace expectation vanishes, the expectations point to one invalid memory address. Thus, triggering an oops in the expectation deletion event path. I decided not to add a new revision of the CT target because I only needed to add a new flag for it. I'll document in this issue in the iptables manpage. I have also changed the return value from EINVAL to EOPNOTSUPP if one flag not supported is specified. Thus, in the future adding new features that only require a new flag can be added without a new revision. There is no official code using this in userspace (apart from the proof-of-concept) that uses this infrastructure but there will be some by beginning 2012. Reported-by: Sam Roberts <vieuxtech@gmail.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>		2011-12-23 14:36:39 +01:00
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acpi	Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux	2011-11-07 10:13:52 -08:00
asm-generic	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux	2011-11-22 14:05:46 -05:00
crypto	crypto: Add a report function pointer to crypto_type	2011-10-21 14:24:03 +02:00
drm	Merge branch 'exynos-drm' of git://git.infradead.org/users/kmpark/linux-samsung into drm-fixes	2011-11-28 14:17:09 +00:00
keys
linux	netfilter: rework user-space expectation helper support	2011-12-23 14:36:39 +01:00
math-emu
media	Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux	2011-11-06 19:44:47 -08:00
misc
mtd
net	netfilter: rework user-space expectation helper support	2011-12-23 14:36:39 +01:00
pcmcia
rdma	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband	2011-11-01 10:51:38 -07:00
rxrpc
scsi	Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6	2011-10-28 16:44:18 -07:00
sound	Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux	2011-11-06 19:44:47 -08:00
target	Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending	2011-11-06 19:00:42 -08:00
trace	Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux	2011-11-06 19:44:47 -08:00
video	ARM: OMAP: HWMOD: Unify DSS resets for OMAPs	2011-11-08 03:16:13 -07:00
xen	xen: Remove hanging references to CONFIG_XEN_PLATFORM_PCI	2011-11-16 12:13:42 -05:00
Kbuild