litmus-rt.git - The LITMUS^RT kernel.

Branch	Commit message	Author	Age
archive/unc-master-3.0	P-FP: fix BUG_ON releated to priority inheritance	Bjoern Brandenburg	13 years
archived-2013.1	uncachedev: mmap memory that is not cached by CPUs	Glenn Elliott	12 years
archived-private-master	Merge branch 'wip-2.6.34' into old-private-master	Andrea Bastoni	15 years
archived-semi-part	Merge branch 'wip-semi-part' of ssh://cvs/cvs/proj/litmus/repo/litmus2010 int...	Andrea Bastoni	15 years
demo	Further refinements	Jonathan Herman	14 years
ecrts-pgm-final	Merge branch 'wip-ecrts14-pgm' of ssh://rtsrv.cs.unc.edu/home/litmus/litmus-r...	Glenn Elliott	12 years
ecrts14-pgm-final	Merge branch 'wip-ecrts14-pgm' of ssh://rtsrv.cs.unc.edu/home/litmus/litmus-r...	Glenn Elliott	12 years
gpusync-rtss12	Final GPUSync implementation.	Glenn Elliott	12 years
gpusync/staging	Rename IKGLP R2DGLP.	Glenn Elliott	12 years
linux-tip	Merge branch 'slab/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/p...	Linus Torvalds	15 years
litmus2008-patch-series	add i386 feather-trace implementation	Bjoern B. Brandenburg	16 years
master	PSN-EDF: use inferred_sporadic_job_release_at	Bjoern Brandenburg	9 years
pgm	make it compile	Glenn Elliott	12 years
prop/litmus-signals	Infrastructure for Litmus signals.	Glenn Elliott	13 years
prop/robust-tie-break	Fixed bug in edf_higher_prio().	Glenn Elliott	13 years
staging	Fix tracepoint compilation error	Felipe Cerqueira	13 years
test	9/23/2016	Namhoon Kim	9 years
tracing-devel	Test kernel tracing events capabilities	Andrea Bastoni	16 years
v2.6.34-with-arm-patches	smsc911x: Add spinlocks around registers access	Catalin Marinas	15 years
v2015.1	Add ARM syscall def for get_current_budget	Bjoern Brandenburg	10 years
wip-2011.2-bbb	Litmus core: simplify np-section protocol	Bjoern B. Brandenburg	14 years
wip-2011.2-bbb-trace	Refactor sched_trace_log_message() -> debug_trace_log_message()	Andrea Bastoni	14 years
wip-2012.3-gpu	SOBLIV draining support for C-EDF.	Glenn Elliott	12 years
wip-2012.3-gpu-preport	pick up last C-RM file	Glenn Elliott	12 years
wip-2012.3-gpu-rtss13	Fix critical bug in GPU tracker.	Glenn Elliott	12 years
wip-2012.3-gpu-sobliv-budget-w-kshark	Proper sobliv draining and many bug fixes.	Glenn Elliott	12 years
wip-aedzl-final	Make it easier to compile AEDZL interfaces in liblitmus.	Glenn Elliott	15 years
wip-aedzl-revised	Add sched_trace data for Apative EDZL	Glenn Elliott	15 years
wip-arbit-deadline	Fix compilation bug.	Glenn Elliott	13 years
wip-aux-tasks	Description of refined aux task inheritance.	Glenn Elliott	13 years
wip-bbb	GSN-EDF & Core: improve debug TRACE'ing for NP sections	Bjoern B. Brandenburg	14 years
wip-bbb-prio-don	use correct timestamp	Bjoern B. Brandenburg	14 years
wip-better-break	Implement hash-based EDF tie-breaking.	Glenn Elliott	13 years
wip-binary-heap	Make C-EDF work with simplified binheap_delete	Glenn Elliott	13 years
wip-budget	Added support for choices in budget policy enforcement.	Glenn Elliott	15 years
wip-color	Summarize schedulability with final record	Jonathan Herman	13 years
wip-color-jlh	sched_color: Fixed two bugs causing crashing on experiment restart and a rare...	Jonathan Herman	13 years
wip-d10-hz1000	Enable HZ=1000 on District 10	Bjoern B. Brandenburg	15 years
wip-default-clustering	Feature: Make default C-EDF clustering compile-time configurable.	Glenn Elliott	15 years
wip-dissipation-jerickso	Update from 2.6.36 to 2.6.36.4	Jeremy Erickson	11 years
wip-dissipation2-jerickso	Update 2.6.36 to 2.6.36.4	Jeremy Erickson	11 years
wip-ecrts14-pgm	Merge branch 'wip-ecrts14-pgm' of ssh://rtsrv.cs.unc.edu/home/litmus/litmus-r...	Glenn Elliott	12 years
wip-edf-hsb	last tested version	Jonathan Herman	14 years
wip-edf-os	Lookup table EDF-os	Jeremy Erickson	12 years
wip-edf-tie-break	Merge branch 'wip-edf-tie-break' of ssh://rtsrv.cs.unc.edu/home/litmus/litmus...	Glenn Elliott	13 years
wip-edzl-critique	Use hr_timer's active checks instead of having own flag.	Glenn Elliott	15 years
wip-edzl-final	Implementation of the EDZL scheduler.	Glenn Elliott	15 years
wip-edzl-revised	Clean up comments.	Glenn Elliott	15 years
wip-events	Added support for tracing arbitrary actions.	Jonathan Herman	15 years
wip-extra-debug	DBG: add additional tracing	Bjoern B. Brandenburg	15 years
wip-fix-switch-jerickso	Attempt to fix race condition with plugin switching	Jeremy Erickson	15 years
wip-fix3	sched: show length of runqueue clock deactivation in /proc/sched_debug	Bjoern B. Brandenburg	15 years
wip-fmlp-dequeue	Improve FMLP queue management.	Glenn Elliott	14 years
wip-ft-irq-flag	Feather-Trace: keep track of interrupt-related interference.	Bjoern B. Brandenburg	14 years
wip-gpu-cleanup	Enable sched_trace log injection from userspace	Glenn Elliott	13 years
wip-gpu-interrupts	Remove option for threading of all softirqs.	Glenn Elliott	14 years
wip-gpu-rtas12	Generalized GPU cost predictors + EWMA. (untested)	Glenn Elliott	13 years
wip-gpu-rtss12	Final GPUSync implementation.	Glenn Elliott	13 years
wip-gpu-rtss12-srp	experimental changes to support GPUs under SRP	Glenn Elliott	13 years
wip-gpusync-merge	Cleanup priority tracking for budget enforcement.	Glenn Elliott	11 years
wip-ikglp	Move RSM and IKGLP imp. to own .c files	Glenn Elliott	13 years
wip-k-fmlp	Merge branch 'mpi-master' into wip-k-fmlp	Glenn Elliott	14 years
wip-kernel-coloring	Added recolor syscall	Namhoon Kim	7 years
wip-kernthreads	Kludge work-queue processing into klitirqd.	Glenn Elliott	15 years
wip-klmirqd-to-aux	Allow klmirqd threads to be given names.	Glenn Elliott	13 years
wip-kshark	Merge branch 'mpi-staging' into wip-kshark	Jonathan Herman	13 years
wip-litmus-3.2	Merge commit 'v3.2' into litmus-staging	Andrea Bastoni	13 years
wip-litmus2011.2	Cleanup: Coding conformance for affinity stuff.	Glenn Elliott	14 years
wip-litmus3.0-2011.2	Feather-Trace: keep track of interrupt-related interference.	Bjoern B. Brandenburg	14 years
wip-master-2.6.33-rt	Avoid deadlock when switching task policy to BACKGROUND (ugly)	Andrea Bastoni	15 years
wip-mc	Removed ARM-specific hacks which disabled less common mixed-criticality featu...	Jonathan Herman	12 years
wip-mc-bipasa	MC-EDF added	bipasa chattopadhyay	13 years
wip-mc-jerickso	Split C/D queues	Jeremy Erickson	15 years
wip-mc2-cache-slack	Manually patched mc^2 related code	Ming Yang	10 years
wip-mcrit-mac	cosmetic	Mac Mollison	15 years
wip-merge-3.0	Prevent Linux to send IPI and queue tasks on remote CPUs.	Andrea Bastoni	14 years
wip-merge-v3.0	Prevent Linux to send IPI and queue tasks on remote CPUs.	Andrea Bastoni	14 years
wip-migration-affinity	NULL affinity dereference in C-EDF.	Glenn Elliott	14 years
wip-mmap-uncache	share branch with others	Glenn Elliott	13 years
wip-modechange	RTSS 2017 submission	Namhoon Kim	8 years
wip-nested-locking	Appears to be working.	Bryan Ward	12 years
wip-omlp-gedf	First implementation of G-OMLP.	Glenn Elliott	15 years
wip-pai	Some cleanup of PAI	Glenn Elliott	14 years
wip-percore-lib	9/21/2016	Namhoon Kim	9 years
wip-performance	CONFIG_DONT_PREEMPT_ON_TIE: Don't preeempt a scheduled task on priority tie.	Glenn Elliott	14 years
wip-pgm	Add PGM support to C-FL	Glenn Elliott	12 years
wip-pgm-split	First draft of C-FL-split	Namhoon Kim	12 years
wip-pm-ovd	Add preemption-and-migration overhead tracing support	Andrea Bastoni	15 years
wip-prio-inh	P-EDF updated to use the generic pi framework.	Glenn Elliott	15 years
wip-prioq-dgl	BUG FIX: Support DGLs with PRIOQ_MUTEX	Glenn Elliott	13 years
wip-refactored-gedf	Generalizd architecture for GEDF-style scheduelrs to reduce code redundancy.	Glenn Elliott	15 years
wip-release-master-fix	bugfix: release master CPU must signal task was picked	Bjoern B. Brandenburg	14 years
wip-robust-tie-break	EDF priority tie-breaks.	Glenn Elliott	13 years
wip-rt-kshark	Move task time accounting into the complete_job method.	Jonathan Herman	13 years
wip-rtas12-pgm	Scheduling of PGM jobs.	Glenn Elliott	13 years
wip-semi-part	Fix compile error with newer GCC	Jeremy Erickson	12 years
wip-semi-part-edfos-jerickso	Use initial CPU set by client	Jeremy Erickson	12 years
wip-shared-lib	TODO: Fix condition checks in replicate_page_move_mapping()	Namhoon Kim	9 years
wip-shared-lib2	RTAS 2017 Submission ver.	Namhoon Kim	9 years
wip-shared-mem	Initial commit for shared library	Namhoon Kim	9 years
wip-splitting-jerickso	Fix release behavior	Jeremy Erickson	13 years
wip-splitting-omlp-jerickso	Bjoern's Dissertation Code with Priority Donation	Jeremy Erickson	13 years
wip-stage-binheap	An efficient binary heap implementation.	Glenn Elliott	13 years
wip-sun-port	Dynamic memory allocation and clean exit for FeatherTrace	Christopher Kenna	15 years
wip-timer-trace	bugfix: C-EDF, clear scheduled field of the correct CPU upon task_exit	Andrea Bastoni	15 years
wip-tracepoints	Add kernel-style events for sched_trace_XXX() functions	Andrea Bastoni	14 years

Tag	Download	Author	Age
2015.1	commit 8e51b37822...	Bjoern Brandenburg	10 years
2013.1	commit bcaacec1ca...	Glenn Elliott	12 years
2012.3	commit c158b5fbe4...	Jonathan Herman	13 years
2012.2	commit b53c479a0f...	Glenn Elliott	13 years
2012.1	commit 83b11ea1c6...	Bjoern B. Brandenburg	14 years
rtas12-mc-beta-exp	commit 8e236ee20f...	Christopher Kenna	14 years
2011.1	commit d11808b5c6...	Christopher Kenna	15 years
v2.6.37-rc4	commit e8a7e48bb2...	Linus Torvalds	15 years
v2.6.37-rc3	commit 3561d43fd2...	Linus Torvalds	15 years
v2.6.37-rc2	commit e53beacd23...	Linus Torvalds	15 years
v2.6.37-rc1	commit c8ddb2713c...	Linus Torvalds	15 years
v2.6.36	commit f6f94e2ab1...	Linus Torvalds	15 years
2010.2	commit 5c5456402d...	Bjoern B. Brandenburg	15 years
v2.6.36-rc8	commit cd07202cc8...	Linus Torvalds	15 years
v2.6.36-rc7	commit cb655d0f3d...	Linus Torvalds	15 years
v2.6.36-rc6	commit 899611ee7d...	Linus Torvalds	15 years
v2.6.36-rc5	commit b30a3f6257...	Linus Torvalds	15 years
v2.6.36-rc4	commit 49553c2ef8...	Linus Torvalds	15 years
v2.6.36-rc3	commit 2bfc96a127...	Linus Torvalds	15 years
v2.6.36-rc2	commit 76be97c1fc...	Linus Torvalds	15 years
v2.6.36-rc1	commit da5cabf80e...	Linus Torvalds	15 years
v2.6.35	commit 9fe6206f40...	Linus Torvalds	15 years
v2.6.35-rc6	commit b37fa16e78...	Linus Torvalds	15 years
v2.6.35-rc5	commit 1c5474a65b...	Linus Torvalds	15 years
v2.6.35-rc4	commit 815c4163b6...	Linus Torvalds	15 years
v2.6.35-rc3	commit 7e27d6e778...	Linus Torvalds	15 years
v2.6.35-rc2	commit e44a21b726...	Linus Torvalds	15 years
v2.6.35-rc1	commit 67a3e12b05...	Linus Torvalds	15 years
2010.1	commit 7c1ff4c544...	Andrea Bastoni	15 years
v2.6.34	commit e40152ee1e...	Linus Torvalds	15 years
v2.6.33.4	commit 4640b4e7d9...	Greg Kroah-Hartman	15 years
v2.6.34-rc7	commit b57f95a382...	Linus Torvalds	15 years
v2.6.34-rc6	commit 66f41d4c5c...	Linus Torvalds	15 years
v2.6.33.3	commit 3e7ad8ed97...	Greg Kroah-Hartman	15 years
v2.6.34-rc5	commit 01bf0b6457...	Linus Torvalds	15 years
v2.6.34-rc4	commit 0d0fb0f9c5...	Linus Torvalds	15 years
v2.6.33.2	commit 19f00f070c...	Greg Kroah-Hartman	15 years
v2.6.34-rc3	commit 2eaa9cfdf3...	Linus Torvalds	15 years
v2.6.34-rc2	commit 220bf991b0...	Linus Torvalds	15 years
v2.6.33.1	commit dbdafe5ccf...	Greg Kroah-Hartman	15 years
v2.6.34-rc1	commit 57d54889cd...	Linus Torvalds	16 years
v2.6.33	commit 60b341b778...	Linus Torvalds	16 years
v2.6.33-rc8	commit 724e6d3fe8...	Linus Torvalds	16 years
v2.6.33-rc7	commit 29275254ca...	Linus Torvalds	16 years
v2.6.33-rc6	commit abe94c756c...	Linus Torvalds	16 years
v2.6.33-rc5	commit 92dcffb916...	Linus Torvalds	16 years
v2.6.33-rc4	commit 7284ce6c9f...	Linus Torvalds	16 years
v2.6.33-rc3	commit 74d2e4f8d7...	Linus Torvalds	16 years
v2.6.33-rc2	commit 6b7b284958...	Linus Torvalds	16 years
v2.6.33-rc1	commit 55639353a0...	Linus Torvalds	16 years
v2.6.32	commit 22763c5cf3...	Linus Torvalds	16 years
v2.6.32-rc8	commit 648f4e3e50...	Linus Torvalds	16 years
v2.6.32-rc7	commit 156171c71a...	Linus Torvalds	16 years
v2.6.32-rc6	commit b419148e56...	Linus Torvalds	16 years
v2.6.32-rc5	commit 012abeea66...	Linus Torvalds	16 years
v2.6.32-rc4	commit 161291396e...	Linus Torvalds	16 years
v2.6.32-rc3	commit 374576a8b6...	Linus Torvalds	16 years
v2.6.32-rc1	commit 17d857be64...	Linus Torvalds	16 years
v2.6.32-rc2	commit 17d857be64...	Linus Torvalds	16 years
v2.6.31	commit 74fca6a428...	Linus Torvalds	16 years
v2.6.31-rc9	commit e07cccf404...	Linus Torvalds	16 years
v2.6.31-rc8	commit 326ba5010a...	Linus Torvalds	16 years
v2.6.31-rc7	commit 422bef879e...	Linus Torvalds	16 years
v2.6.31-rc6	commit 64f1607ffb...	Linus Torvalds	16 years
v2.6.31-rc5	commit ed680c4ad4...	Linus Torvalds	16 years
v2.6.31-rc4	commit 4be3bd7849...	Linus Torvalds	16 years
v2.6.31-rc3	commit 6847e154e3...	Linus Torvalds	16 years
v2.6.31-rc2	commit 8e4a718ff3...	Linus Torvalds	16 years
v2.6.31-rc1	commit 28d0325ce6...	Linus Torvalds	16 years
v2.6.30	commit 07a2039b8e...	Linus Torvalds	16 years
v2.6.30-rc8	commit 9fa7eb283c...	Linus Torvalds	16 years
v2.6.30-rc7	commit 59a3759d0f...	Linus Torvalds	16 years
v2.6.30-rc6	commit 1406de8e11...	Linus Torvalds	16 years
v2.6.30-rc5	commit 091bf7624d...	Linus Torvalds	16 years
v2.6.30-rc4	commit 091438dd56...	Linus Torvalds	16 years
v2.6.30-rc3	commit 0910697403...	Linus Torvalds	16 years
v2.6.30-rc2	commit 0882e8dd3a...	Linus Torvalds	16 years
v2.6.30-rc1	commit 577c9c456f...	Linus Torvalds	16 years
v2.6.29	commit 8e0ee43bc2...	Linus Torvalds	16 years
v2.6.29-rc8	commit 041b62374c...	Linus Torvalds	17 years
v2.6.29-rc7	commit fec6c6fec3...	Linus Torvalds	17 years
v2.6.29-rc6	commit 20f4d6c3a2...	Linus Torvalds	17 years
v2.6.29-rc5	commit d2f8d7ee1a...	Linus Torvalds	17 years
v2.6.29-rc4	commit 8e4921515c...	Linus Torvalds	17 years
v2.6.29-rc3	commit 18e352e4a7...	Linus Torvalds	17 years
v2.6.29-rc2	commit 1de9e8e70f...	Linus Torvalds	17 years
v2.6.29-rc1	commit c59765042f...	Linus Torvalds	17 years
v2.6.28	commit 4a6908a3a0...	Linus Torvalds	17 years
v2.6.28-rc9	commit 929096fe9f...	Linus Torvalds	17 years
v2.6.28-rc8	commit 8b1fae4e42...	Linus Torvalds	17 years
v2.6.28-rc7	commit 061e41fdb5...	Linus Torvalds	17 years
v2.6.28-rc6	commit 13d428afc0...	Linus Torvalds	17 years
v2.6.28-rc5	commit 9bf1a2445f...	Linus Torvalds	17 years
v2.6.28-rc4	commit f7160c7573...	Linus Torvalds	17 years
v2.6.28-rc3	commit 45beca08dd...	Linus Torvalds	17 years
v2.6.28-rc2	commit 0173a3265b...	Linus Torvalds	17 years
v2.6.28-rc1	commit 57f8f7b60d...	Linus Torvalds	17 years
v2.6.27	commit 3fa8749e58...	Linus Torvalds	17 years
v2.6.27-rc9	commit 4330ed8ed4...	Linus Torvalds	17 years
v2.6.27-rc8	commit 94aca1dac6...	Linus Torvalds	17 years
v2.6.27-rc7	commit 72d31053f6...	Linus Torvalds	17 years
v2.6.27-rc6	commit adee14b2e1...	Linus Torvalds	17 years
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v2.6.27-rc4	commit 6a55617ed5...	Linus Torvalds	17 years
v2.6.27-rc3	commit 30a2f3c60a...	Linus Torvalds	17 years
v2.6.27-rc2	commit 0967d61ea0...	Linus Torvalds	17 years
v2.6.27-rc1	commit 6e86841d05...	Linus Torvalds	17 years
v2.6.26	commit bce7f793da...	Linus Torvalds	17 years
v2.6.26-rc9	commit b7279469d6...	Linus Torvalds	17 years
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v2.6.26-rc3	commit b8291ad07a...	Linus Torvalds	17 years
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v2.6.25	commit 4b119e21d0...	Linus Torvalds	17 years
v2.6.25-rc9	commit 120dd64cac...	Linus Torvalds	17 years
v2.6.25-rc8	commit 0e81a8ae37...	Linus Torvalds	17 years
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v2.6.25-rc6	commit a978b30af3...	Linus Torvalds	17 years
v2.6.25-rc5	commit cdeeeae056...	Linus Torvalds	18 years
v2.6.25-rc4	commit 29e8c3c304...	Linus Torvalds	18 years
v2.6.25-rc3	commit bfa274e243...	Linus Torvalds	18 years
v2.6.25-rc2	commit 101142c37b...	Linus Torvalds	18 years
v2.6.25-rc1	commit 19af35546d...	Linus Torvalds	18 years
v2.6.24	commit 49914084e7...	Linus Torvalds	18 years
v2.6.24-rc8	commit cbd9c88369...	Linus Torvalds	18 years
v2.6.24-rc7	commit 3ce5445046...	Linus Torvalds	18 years
v2.6.24-rc6	commit ea67db4cdb...	Linus Torvalds	18 years
v2.6.24-rc5	commit 82d29bf6dc...	Linus Torvalds	18 years
v2.6.24-rc4	commit 09b56adc98...	Linus Torvalds	18 years
v2.6.24-rc3	commit d9f8bcbf67...	Linus Torvalds	18 years
v2.6.24-rc2	commit dbeeb816e8...	Linus Torvalds	18 years
v2.6.24-rc1	commit c9927c2bf4...	Linus Torvalds	18 years
v2.6.23	commit bbf25010f1...	Linus Torvalds	18 years
v2.6.23-rc9	commit 3146b39c18...	Linus Torvalds	18 years
v2.6.23-rc8	commit 4942de4a0e...	Linus Torvalds	18 years
v2.6.23-rc7	commit 81cfe79b9c...	Linus Torvalds	18 years
v2.6.23-rc6	commit 0d4cbb5e7f...	Linus Torvalds	18 years
v2.6.23-rc5	commit 40ffbfad6b...	Linus Torvalds	18 years
v2.6.23-rc4	commit b07d68b5ca...	Linus Torvalds	18 years
v2.6.23-rc3	commit 39d3520c92...	Linus Torvalds	18 years
v2.6.23-rc2	commit d4ac2477fa...	Linus Torvalds	18 years
v2.6.23-rc1	commit f695baf2df...	Linus Torvalds	18 years
v2.6.22	commit 7dcca30a32...	Linus Torvalds	18 years
v2.6.22-rc7	commit a38d6181ff...	Linus Torvalds	18 years
v2.6.22-rc6	commit 189548642c...	Linus Torvalds	18 years
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v2.6.22-rc4	commit 5ecd3100e6...	Linus Torvalds	18 years
v2.6.22-rc3	commit c420bc9f09...	Linus Torvalds	18 years
v2.6.22-rc2	commit 55b637c6a0...	Linus Torvalds	18 years
v2.6.22-rc1	commit 39403865d2...	Linus Torvalds	18 years
v2.6.21	commit de46c33745...	Linus Torvalds	18 years
v2.6.21-rc7	commit 94a05509a9...	Linus Torvalds	18 years
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v2.6.20	commit 62d0cfcb27...	Linus Torvalds	19 years
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v2.6.20-rc4	commit bf81b46482...	Linus Torvalds	19 years
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/* orinoco.c - (formerly known as dldwd_cs.c and orinoco_cs.c) * * A driver for Hermes or Prism 2 chipset based PCMCIA wireless * adaptors, with Lucent/Agere, Intersil or Symbol firmware. * * Current maintainers (as of 29 September 2003) are: * Pavel Roskin <proski AT gnu.org> * and David Gibson <hermes AT gibson.dropbear.id.au> * * (C) Copyright David Gibson, IBM Corporation 2001-2003. * Copyright (C) 2000 David Gibson, Linuxcare Australia. * With some help from : * Copyright (C) 2001 Jean Tourrilhes, HP Labs * Copyright (C) 2001 Benjamin Herrenschmidt * * Based on dummy_cs.c 1.27 2000/06/12 21:27:25 * * Portions based on wvlan_cs.c 1.0.6, Copyright Andreas Neuhaus <andy * AT fasta.fh-dortmund.de> * http://www.stud.fh-dortmund.de/~andy/wvlan/ * * The contents of this file are subject to the Mozilla Public License * Version 1.1 (the "License"); you may not use this file except in * compliance with the License. You may obtain a copy of the License * at http://www.mozilla.org/MPL/ * * Software distributed under the License is distributed on an "AS IS" * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See * the License for the specific language governing rights and * limitations under the License. * * The initial developer of the original code is David A. Hinds * <dahinds AT users.sourceforge.net>. Portions created by David * A. Hinds are Copyright (C) 1999 David A. Hinds. All Rights * Reserved. * * Alternatively, the contents of this file may be used under the * terms of the GNU General Public License version 2 (the "GPL"), in * which case the provisions of the GPL are applicable instead of the * above. If you wish to allow the use of your version of this file * only under the terms of the GPL and not to allow others to use your * version of this file under the MPL, indicate your decision by * deleting the provisions above and replace them with the notice and * other provisions required by the GPL. If you do not delete the * provisions above, a recipient may use your version of this file * under either the MPL or the GPL. */ /* * TODO * o Handle de-encapsulation within network layer, provide 802.11 * headers (patch from Thomas 'Dent' Mirlacher) * o Fix possible races in SPY handling. * o Disconnect wireless extensions from fundamental configuration. * o (maybe) Software WEP support (patch from Stano Meduna). * o (maybe) Use multiple Tx buffers - driver handling queue * rather than firmware. */ /* Locking and synchronization: * * The basic principle is that everything is serialized through a * single spinlock, priv->lock. The lock is used in user, bh and irq * context, so when taken outside hardirq context it should always be * taken with interrupts disabled. The lock protects both the * hardware and the struct orinoco_private. * * Another flag, priv->hw_unavailable indicates that the hardware is * unavailable for an extended period of time (e.g. suspended, or in * the middle of a hard reset). This flag is protected by the * spinlock. All code which touches the hardware should check the * flag after taking the lock, and if it is set, give up on whatever * they are doing and drop the lock again. The orinoco_lock() * function handles this (it unlocks and returns -EBUSY if * hw_unavailable is non-zero). */ #define DRIVER_NAME "orinoco" #include <linux/module.h> #include <linux/kernel.h> #include <linux/init.h> #include <linux/netdevice.h> #include <linux/etherdevice.h> #include <linux/ethtool.h> #include <linux/if_arp.h> #include <linux/wireless.h> #include <net/iw_handler.h> #include <net/ieee80211.h> #include "hermes_rid.h" #include "orinoco.h" /********************************************************************/ /* Module information */ /********************************************************************/ MODULE_AUTHOR("Pavel Roskin <proski@gnu.org> & David Gibson <hermes@gibson.dropbear.id.au>"); MODULE_DESCRIPTION("Driver for Lucent Orinoco, Prism II based and similar wireless cards"); MODULE_LICENSE("Dual MPL/GPL"); /* Level of debugging. Used in the macros in orinoco.h */ #ifdef ORINOCO_DEBUG int orinoco_debug = ORINOCO_DEBUG; module_param(orinoco_debug, int, 0644); MODULE_PARM_DESC(orinoco_debug, "Debug level"); EXPORT_SYMBOL(orinoco_debug); #endif static int suppress_linkstatus; /* = 0 */ module_param(suppress_linkstatus, bool, 0644); MODULE_PARM_DESC(suppress_linkstatus, "Don't log link status changes"); static int ignore_disconnect; /* = 0 */ module_param(ignore_disconnect, int, 0644); MODULE_PARM_DESC(ignore_disconnect, "Don't report lost link to the network layer"); static int force_monitor; /* = 0 */ module_param(force_monitor, int, 0644); MODULE_PARM_DESC(force_monitor, "Allow monitor mode for all firmware versions"); /********************************************************************/ /* Compile time configuration and compatibility stuff */ /********************************************************************/ /* We do this this way to avoid ifdefs in the actual code */ #ifdef WIRELESS_SPY #define SPY_NUMBER(priv) (priv->spy_data.spy_number) #else #define SPY_NUMBER(priv) 0 #endif /* WIRELESS_SPY */ /********************************************************************/ /* Internal constants */ /********************************************************************/ /* 802.2 LLC/SNAP header used for Ethernet encapsulation over 802.11 */ static const u8 encaps_hdr[] = {0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00}; #define ENCAPS_OVERHEAD (sizeof(encaps_hdr) + 2) #define ORINOCO_MIN_MTU 256 #define ORINOCO_MAX_MTU (IEEE80211_DATA_LEN - ENCAPS_OVERHEAD) #define SYMBOL_MAX_VER_LEN (14) #define USER_BAP 0 #define IRQ_BAP 1 #define MAX_IRQLOOPS_PER_IRQ 10 #define MAX_IRQLOOPS_PER_JIFFY (20000/HZ) /* Based on a guestimate of * how many events the * device could * legitimately generate */ #define SMALL_KEY_SIZE 5 #define LARGE_KEY_SIZE 13 #define TX_NICBUF_SIZE_BUG 1585 /* Bug in Symbol firmware */ #define DUMMY_FID 0xFFFF /*#define MAX_MULTICAST(priv) (priv->firmware_type == FIRMWARE_TYPE_AGERE ? \ HERMES_MAX_MULTICAST : 0)*/ #define MAX_MULTICAST(priv) (HERMES_MAX_MULTICAST) #define ORINOCO_INTEN (HERMES_EV_RX | HERMES_EV_ALLOC \ | HERMES_EV_TX | HERMES_EV_TXEXC \ | HERMES_EV_WTERR | HERMES_EV_INFO \ | HERMES_EV_INFDROP ) #define MAX_RID_LEN 1024 static const struct iw_handler_def orinoco_handler_def; static const struct ethtool_ops orinoco_ethtool_ops; /********************************************************************/ /* Data tables */ /********************************************************************/ /* The frequency of each channel in MHz */ static const long channel_frequency[] = { 2412, 2417, 2422, 2427, 2432, 2437, 2442, 2447, 2452, 2457, 2462, 2467, 2472, 2484 }; #define NUM_CHANNELS ARRAY_SIZE(channel_frequency) /* This tables gives the actual meanings of the bitrate IDs returned * by the firmware. */ static struct { int bitrate; /* in 100s of kilobits */ int automatic; u16 agere_txratectrl; u16 intersil_txratectrl; } bitrate_table[] = { {110, 1, 3, 15}, /* Entry 0 is the default */ {10, 0, 1, 1}, {10, 1, 1, 1}, {20, 0, 2, 2}, {20, 1, 6, 3}, {55, 0, 4, 4}, {55, 1, 7, 7}, {110, 0, 5, 8}, }; #define BITRATE_TABLE_SIZE ARRAY_SIZE(bitrate_table) /********************************************************************/ /* Data types */ /********************************************************************/ /* Beginning of the Tx descriptor, used in TxExc handling */ struct hermes_txexc_data { struct hermes_tx_descriptor desc; __le16 frame_ctl; __le16 duration_id; u8 addr1[ETH_ALEN]; } __attribute__ ((packed)); /* Rx frame header except compatibility 802.3 header */ struct hermes_rx_descriptor { /* Control */ __le16 status; __le32 time; u8 silence; u8 signal; u8 rate; u8 rxflow; __le32 reserved; /* 802.11 header */ __le16 frame_ctl; __le16 duration_id; u8 addr1[ETH_ALEN]; u8 addr2[ETH_ALEN]; u8 addr3[ETH_ALEN]; __le16 seq_ctl; u8 addr4[ETH_ALEN]; /* Data length */ __le16 data_len; } __attribute__ ((packed)); /********************************************************************/ /* Function prototypes */ /********************************************************************/ static int __orinoco_program_rids(struct net_device *dev); static void __orinoco_set_multicast_list(struct net_device *dev); /********************************************************************/ /* Internal helper functions */ /********************************************************************/ static inline void set_port_type(struct orinoco_private *priv) { switch (priv->iw_mode) { case IW_MODE_INFRA: priv->port_type = 1; priv->createibss = 0; break; case IW_MODE_ADHOC: if (priv->prefer_port3) { priv->port_type = 3; priv->createibss = 0; } else { priv->port_type = priv->ibss_port; priv->createibss = 1; } break; case IW_MODE_MONITOR: priv->port_type = 3; priv->createibss = 0; break; default: printk(KERN_ERR "%s: Invalid priv->iw_mode in set_port_type()\n", priv->ndev->name); } } /********************************************************************/ /* Device methods */ /********************************************************************/ static int orinoco_open(struct net_device *dev) { struct orinoco_private *priv = netdev_priv(dev); unsigned long flags; int err; if (orinoco_lock(priv, &flags) != 0) return -EBUSY; err = __orinoco_up(dev); if (! err) priv->open = 1; orinoco_unlock(priv, &flags); return err; } static int orinoco_stop(struct net_device *dev) { struct orinoco_private *priv = netdev_priv(dev); int err = 0; /* We mustn't use orinoco_lock() here, because we need to be able to close the interface even if hw_unavailable is set (e.g. as we're released after a PC Card removal) */ spin_lock_irq(&priv->lock); priv->open = 0; err = __orinoco_down(dev); spin_unlock_irq(&priv->lock); return err; } static struct net_device_stats *orinoco_get_stats(struct net_device *dev) { struct orinoco_private *priv = netdev_priv(dev); return &priv->stats; } static struct iw_statistics *orinoco_get_wireless_stats(struct net_device *dev) { struct orinoco_private *priv = netdev_priv(dev); hermes_t *hw = &priv->hw; struct iw_statistics *wstats = &priv->wstats; int err; unsigned long flags; if (! netif_device_present(dev)) { printk(KERN_WARNING "%s: get_wireless_stats() called while device not present\n", dev->name); return NULL; /* FIXME: Can we do better than this? */ } /* If busy, return the old stats. Returning NULL may cause * the interface to disappear from /proc/net/wireless */ if (orinoco_lock(priv, &flags) != 0) return wstats; /* We can't really wait for the tallies inquiry command to * complete, so we just use the previous results and trigger * a new tallies inquiry command for next time - Jean II */ /* FIXME: Really we should wait for the inquiry to come back - * as it is the stats we give don't make a whole lot of sense. * Unfortunately, it's not clear how to do that within the * wireless extensions framework: I think we're in user * context, but a lock seems to be held by the time we get in * here so we're not safe to sleep here. */ hermes_inquire(hw, HERMES_INQ_TALLIES); if (priv->iw_mode == IW_MODE_ADHOC) { memset(&wstats->qual, 0, sizeof(wstats->qual)); /* If a spy address is defined, we report stats of the * first spy address - Jean II */ if (SPY_NUMBER(priv)) { wstats->qual.qual = priv->spy_data.spy_stat[0].qual; wstats->qual.level = priv->spy_data.spy_stat[0].level; wstats->qual.noise = priv->spy_data.spy_stat[0].noise; wstats->qual.updated = priv->spy_data.spy_stat[0].updated; } } else { struct { __le16 qual, signal, noise, unused; } __attribute__ ((packed)) cq; err = HERMES_READ_RECORD(hw, USER_BAP, HERMES_RID_COMMSQUALITY, &cq); if (!err) { wstats->qual.qual = (int)le16_to_cpu(cq.qual); wstats->qual.level = (int)le16_to_cpu(cq.signal) - 0x95; wstats->qual.noise = (int)le16_to_cpu(cq.noise) - 0x95; wstats->qual.updated = 7; } } orinoco_unlock(priv, &flags); return wstats; } static void orinoco_set_multicast_list(struct net_device *dev) { struct orinoco_private *priv = netdev_priv(dev); unsigned long flags; if (orinoco_lock(priv, &flags) != 0) { printk(KERN_DEBUG "%s: orinoco_set_multicast_list() " "called when hw_unavailable\n", dev->name); return; } __orinoco_set_multicast_list(dev); orinoco_unlock(priv, &flags); } static int orinoco_change_mtu(struct net_device *dev, int new_mtu) { struct orinoco_private *priv = netdev_priv(dev); if ( (new_mtu < ORINOCO_MIN_MTU) || (new_mtu > ORINOCO_MAX_MTU) ) return -EINVAL; if ( (new_mtu + ENCAPS_OVERHEAD + IEEE80211_HLEN) > (priv->nicbuf_size - ETH_HLEN) ) return -EINVAL; dev->mtu = new_mtu; return 0; } /********************************************************************/ /* Tx path */ /********************************************************************/ static int orinoco_xmit(struct sk_buff *skb, struct net_device *dev) { struct orinoco_private *priv = netdev_priv(dev); struct net_device_stats *stats = &priv->stats; hermes_t *hw = &priv->hw; int err = 0; u16 txfid = priv->txfid; struct ethhdr *eh; int data_off; struct hermes_tx_descriptor desc; unsigned long flags; if (! netif_running(dev)) { printk(KERN_ERR "%s: Tx on stopped device!\n", dev->name); return NETDEV_TX_BUSY; } if (netif_queue_stopped(dev)) { printk(KERN_DEBUG "%s: Tx while transmitter busy!\n", dev->name); return NETDEV_TX_BUSY; } if (orinoco_lock(priv, &flags) != 0) { printk(KERN_ERR "%s: orinoco_xmit() called while hw_unavailable\n", dev->name); return NETDEV_TX_BUSY; } if (! netif_carrier_ok(dev) || (priv->iw_mode == IW_MODE_MONITOR)) { /* Oops, the firmware hasn't established a connection, silently drop the packet (this seems to be the safest approach). */ goto drop; } /* Check packet length */ if (skb->len < ETH_HLEN) goto drop; eh = (struct ethhdr *)skb->data; memset(&desc, 0, sizeof(desc)); desc.tx_control = cpu_to_le16(HERMES_TXCTRL_TX_OK | HERMES_TXCTRL_TX_EX); err = hermes_bap_pwrite(hw, USER_BAP, &desc, sizeof(desc), txfid, 0); if (err) { if (net_ratelimit()) printk(KERN_ERR "%s: Error %d writing Tx descriptor " "to BAP\n", dev->name, err); goto busy; } /* Clear the 802.11 header and data length fields - some * firmwares (e.g. Lucent/Agere 8.xx) appear to get confused * if this isn't done. */ hermes_clear_words(hw, HERMES_DATA0, HERMES_802_3_OFFSET - HERMES_802_11_OFFSET); /* Encapsulate Ethernet-II frames */ if (ntohs(eh->h_proto) > ETH_DATA_LEN) { /* Ethernet-II frame */ struct header_struct { struct ethhdr eth; /* 802.3 header */ u8 encap[6]; /* 802.2 header */ } __attribute__ ((packed)) hdr; /* Strip destination and source from the data */ skb_pull(skb, 2 * ETH_ALEN); data_off = HERMES_802_2_OFFSET + sizeof(encaps_hdr); /* And move them to a separate header */ memcpy(&hdr.eth, eh, 2 * ETH_ALEN); hdr.eth.h_proto = htons(sizeof(encaps_hdr) + skb->len); memcpy(hdr.encap, encaps_hdr, sizeof(encaps_hdr)); err = hermes_bap_pwrite(hw, USER_BAP, &hdr, sizeof(hdr), txfid, HERMES_802_3_OFFSET); if (err) { if (net_ratelimit()) printk(KERN_ERR "%s: Error %d writing packet " "header to BAP\n", dev->name, err); goto busy; } } else { /* IEEE 802.3 frame */ data_off = HERMES_802_3_OFFSET; } err = hermes_bap_pwrite(hw, USER_BAP, skb->data, skb->len, txfid, data_off); if (err) { printk(KERN_ERR "%s: Error %d writing packet to BAP\n", dev->name, err); goto busy; } /* Finally, we actually initiate the send */ netif_stop_queue(dev); err = hermes_docmd_wait(hw, HERMES_CMD_TX | HERMES_CMD_RECL, txfid, NULL); if (err) { netif_start_queue(dev); if (net_ratelimit()) printk(KERN_ERR "%s: Error %d transmitting packet\n", dev->name, err); goto busy; } dev->trans_start = jiffies; stats->tx_bytes += data_off + skb->len; goto ok; drop: stats->tx_errors++; stats->tx_dropped++; ok: orinoco_unlock(priv, &flags); dev_kfree_skb(skb); return NETDEV_TX_OK; busy: if (err == -EIO) schedule_work(&priv->reset_work); orinoco_unlock(priv, &flags); return NETDEV_TX_BUSY; } static void __orinoco_ev_alloc(struct net_device *dev, hermes_t *hw) { struct orinoco_private *priv = netdev_priv(dev); u16 fid = hermes_read_regn(hw, ALLOCFID); if (fid != priv->txfid) { if (fid != DUMMY_FID) printk(KERN_WARNING "%s: Allocate event on unexpected fid (%04X)\n", dev->name, fid); return; } hermes_write_regn(hw, ALLOCFID, DUMMY_FID); } static void __orinoco_ev_tx(struct net_device *dev, hermes_t *hw) { struct orinoco_private *priv = netdev_priv(dev); struct net_device_stats *stats = &priv->stats; stats->tx_packets++; netif_wake_queue(dev); hermes_write_regn(hw, TXCOMPLFID, DUMMY_FID); } static void __orinoco_ev_txexc(struct net_device *dev, hermes_t *hw) { struct orinoco_private *priv = netdev_priv(dev); struct net_device_stats *stats = &priv->stats; u16 fid = hermes_read_regn(hw, TXCOMPLFID); u16 status; struct hermes_txexc_data hdr; int err = 0; if (fid == DUMMY_FID) return; /* Nothing's really happened */ /* Read part of the frame header - we need status and addr1 */ err = hermes_bap_pread(hw, IRQ_BAP, &hdr, sizeof(struct hermes_txexc_data), fid, 0); hermes_write_regn(hw, TXCOMPLFID, DUMMY_FID); stats->tx_errors++; if (err) { printk(KERN_WARNING "%s: Unable to read descriptor on Tx error " "(FID=%04X error %d)\n", dev->name, fid, err); return; } DEBUG(1, "%s: Tx error, err %d (FID=%04X)\n", dev->name, err, fid); /* We produce a TXDROP event only for retry or lifetime * exceeded, because that's the only status that really mean * that this particular node went away. * Other errors means that *we* screwed up. - Jean II */ status = le16_to_cpu(hdr.desc.status); if (status & (HERMES_TXSTAT_RETRYERR | HERMES_TXSTAT_AGEDERR)) { union iwreq_data wrqu; /* Copy 802.11 dest address. * We use the 802.11 header because the frame may * not be 802.3 or may be mangled... * In Ad-Hoc mode, it will be the node address. * In managed mode, it will be most likely the AP addr * User space will figure out how to convert it to * whatever it needs (IP address or else). * - Jean II */ memcpy(wrqu.addr.sa_data, hdr.addr1, ETH_ALEN); wrqu.addr.sa_family = ARPHRD_ETHER; /* Send event to user space */ wireless_send_event(dev, IWEVTXDROP, &wrqu, NULL); } netif_wake_queue(dev); } static void orinoco_tx_timeout(struct net_device *dev) { struct orinoco_private *priv = netdev_priv(dev); struct net_device_stats *stats = &priv->stats; struct hermes *hw = &priv->hw; printk(KERN_WARNING "%s: Tx timeout! " "ALLOCFID=%04x, TXCOMPLFID=%04x, EVSTAT=%04x\n", dev->name, hermes_read_regn(hw, ALLOCFID), hermes_read_regn(hw, TXCOMPLFID), hermes_read_regn(hw, EVSTAT)); stats->tx_errors++; schedule_work(&priv->reset_work); } /********************************************************************/ /* Rx path (data frames) */ /********************************************************************/ /* Does the frame have a SNAP header indicating it should be * de-encapsulated to Ethernet-II? */ static inline int is_ethersnap(void *_hdr) { u8 *hdr = _hdr; /* We de-encapsulate all packets which, a) have SNAP headers * (i.e. SSAP=DSAP=0xaa and CTRL=0x3 in the 802.2 LLC header * and where b) the OUI of the SNAP header is 00:00:00 or * 00:00:f8 - we need both because different APs appear to use * different OUIs for some reason */ return (memcmp(hdr, &encaps_hdr, 5) == 0) && ( (hdr[5] == 0x00) || (hdr[5] == 0xf8) ); } static inline void orinoco_spy_gather(struct net_device *dev, u_char *mac, int level, int noise) { struct iw_quality wstats; wstats.level = level - 0x95; wstats.noise = noise - 0x95; wstats.qual = (level > noise) ? (level - noise) : 0; wstats.updated = 7; /* Update spy records */ wireless_spy_update(dev, mac, &wstats); } static void orinoco_stat_gather(struct net_device *dev, struct sk_buff *skb, struct hermes_rx_descriptor *desc) { struct orinoco_private *priv = netdev_priv(dev); /* Using spy support with lots of Rx packets, like in an * infrastructure (AP), will really slow down everything, because * the MAC address must be compared to each entry of the spy list. * If the user really asks for it (set some address in the * spy list), we do it, but he will pay the price. * Note that to get here, you need both WIRELESS_SPY * compiled in AND some addresses in the list !!! */ /* Note : gcc will optimise the whole section away if * WIRELESS_SPY is not defined... - Jean II */ if (SPY_NUMBER(priv)) { orinoco_spy_gather(dev, skb_mac_header(skb) + ETH_ALEN, desc->signal, desc->silence); } } /* * orinoco_rx_monitor - handle received monitor frames. * * Arguments: * dev network device * rxfid received FID * desc rx descriptor of the frame * * Call context: interrupt */ static void orinoco_rx_monitor(struct net_device *dev, u16 rxfid, struct hermes_rx_descriptor *desc) { u32 hdrlen = 30; /* return full header by default */ u32 datalen = 0; u16 fc; int err; int len; struct sk_buff *skb; struct orinoco_private *priv = netdev_priv(dev); struct net_device_stats *stats = &priv->stats; hermes_t *hw = &priv->hw; len = le16_to_cpu(desc->data_len); /* Determine the size of the header and the data */ fc = le16_to_cpu(desc->frame_ctl); switch (fc & IEEE80211_FCTL_FTYPE) { case IEEE80211_FTYPE_DATA: if ((fc & IEEE80211_FCTL_TODS) && (fc & IEEE80211_FCTL_FROMDS)) hdrlen = 30; else hdrlen = 24; datalen = len; break; case IEEE80211_FTYPE_MGMT: hdrlen = 24; datalen = len; break; case IEEE80211_FTYPE_CTL: switch (fc & IEEE80211_FCTL_STYPE) { case IEEE80211_STYPE_PSPOLL: case IEEE80211_STYPE_RTS: case IEEE80211_STYPE_CFEND: case IEEE80211_STYPE_CFENDACK: hdrlen = 16; break; case IEEE80211_STYPE_CTS: case IEEE80211_STYPE_ACK: hdrlen = 10; break; } break; default: /* Unknown frame type */ break; } /* sanity check the length */ if (datalen > IEEE80211_DATA_LEN + 12) { printk(KERN_DEBUG "%s: oversized monitor frame, " "data length = %d\n", dev->name, datalen); stats->rx_length_errors++; goto update_stats; } skb = dev_alloc_skb(hdrlen + datalen); if (!skb) { printk(KERN_WARNING "%s: Cannot allocate skb for monitor frame\n", dev->name); goto update_stats; } /* Copy the 802.11 header to the skb */ memcpy(skb_put(skb, hdrlen), &(desc->frame_ctl), hdrlen); skb_reset_mac_header(skb); /* If any, copy the data from the card to the skb */ if (datalen > 0) { err = hermes_bap_pread(hw, IRQ_BAP, skb_put(skb, datalen), ALIGN(datalen, 2), rxfid, HERMES_802_2_OFFSET); if (err) { printk(KERN_ERR "%s: error %d reading monitor frame\n", dev->name, err); goto drop; } } skb->dev = dev; skb->ip_summed = CHECKSUM_NONE; skb->pkt_type = PACKET_OTHERHOST; skb->protocol = __constant_htons(ETH_P_802_2); dev->last_rx = jiffies; stats->rx_packets++; stats->rx_bytes += skb->len; netif_rx(skb); return; drop: dev_kfree_skb_irq(skb); update_stats: stats->rx_errors++; stats->rx_dropped++; } static void __orinoco_ev_rx(struct net_device *dev, hermes_t *hw) { struct orinoco_private *priv = netdev_priv(dev); struct net_device_stats *stats = &priv->stats; struct iw_statistics *wstats = &priv->wstats; struct sk_buff *skb = NULL; u16 rxfid, status, fc; int length; struct hermes_rx_descriptor desc; struct ethhdr *hdr; int err; rxfid = hermes_read_regn(hw, RXFID); err = hermes_bap_pread(hw, IRQ_BAP, &desc, sizeof(desc), rxfid, 0); if (err) { printk(KERN_ERR "%s: error %d reading Rx descriptor. " "Frame dropped.\n", dev->name, err); goto update_stats; } status = le16_to_cpu(desc.status); if (status & HERMES_RXSTAT_BADCRC) { DEBUG(1, "%s: Bad CRC on Rx. Frame dropped.\n", dev->name); stats->rx_crc_errors++; goto update_stats; } /* Handle frames in monitor mode */ if (priv->iw_mode == IW_MODE_MONITOR) { orinoco_rx_monitor(dev, rxfid, &desc); return; } if (status & HERMES_RXSTAT_UNDECRYPTABLE) { DEBUG(1, "%s: Undecryptable frame on Rx. Frame dropped.\n", dev->name); wstats->discard.code++; goto update_stats; } length = le16_to_cpu(desc.data_len); fc = le16_to_cpu(desc.frame_ctl); /* Sanity checks */ if (length < 3) { /* No for even an 802.2 LLC header */ /* At least on Symbol firmware with PCF we get quite a lot of these legitimately - Poll frames with no data. */ return; } if (length > IEEE80211_DATA_LEN) { printk(KERN_WARNING "%s: Oversized frame received (%d bytes)\n", dev->name, length); stats->rx_length_errors++; goto update_stats; } /* We need space for the packet data itself, plus an ethernet header, plus 2 bytes so we can align the IP header on a 32bit boundary, plus 1 byte so we can read in odd length packets from the card, which has an IO granularity of 16 bits */ skb = dev_alloc_skb(length+ETH_HLEN+2+1); if (!skb) { printk(KERN_WARNING "%s: Can't allocate skb for Rx\n", dev->name); goto update_stats; } /* We'll prepend the header, so reserve space for it. The worst case is no decapsulation, when 802.3 header is prepended and nothing is removed. 2 is for aligning the IP header. */ skb_reserve(skb, ETH_HLEN + 2); err = hermes_bap_pread(hw, IRQ_BAP, skb_put(skb, length), ALIGN(length, 2), rxfid, HERMES_802_2_OFFSET); if (err) { printk(KERN_ERR "%s: error %d reading frame. " "Frame dropped.\n", dev->name, err); goto drop; } /* Handle decapsulation * In most cases, the firmware tell us about SNAP frames. * For some reason, the SNAP frames sent by LinkSys APs * are not properly recognised by most firmwares. * So, check ourselves */ if (length >= ENCAPS_OVERHEAD && (((status & HERMES_RXSTAT_MSGTYPE) == HERMES_RXSTAT_1042) || ((status & HERMES_RXSTAT_MSGTYPE) == HERMES_RXSTAT_TUNNEL) || is_ethersnap(skb->data))) { /* These indicate a SNAP within 802.2 LLC within 802.11 frame which we'll need to de-encapsulate to the original EthernetII frame. */ hdr = (struct ethhdr *)skb_push(skb, ETH_HLEN - ENCAPS_OVERHEAD); } else { /* 802.3 frame - prepend 802.3 header as is */ hdr = (struct ethhdr *)skb_push(skb, ETH_HLEN); hdr->h_proto = htons(length); } memcpy(hdr->h_dest, desc.addr1, ETH_ALEN); if (fc & IEEE80211_FCTL_FROMDS) memcpy(hdr->h_source, desc.addr3, ETH_ALEN); else memcpy(hdr->h_source, desc.addr2, ETH_ALEN); dev->last_rx = jiffies; skb->protocol = eth_type_trans(skb, dev); skb->ip_summed = CHECKSUM_NONE; if (fc & IEEE80211_FCTL_TODS) skb->pkt_type = PACKET_OTHERHOST; /* Process the wireless stats if needed */ orinoco_stat_gather(dev, skb, &desc); /* Pass the packet to the networking stack */ netif_rx(skb); stats->rx_packets++; stats->rx_bytes += length; return; drop: dev_kfree_skb_irq(skb); update_stats: stats->rx_errors++; stats->rx_dropped++; } /********************************************************************/ /* Rx path (info frames) */ /********************************************************************/ static void print_linkstatus(struct net_device *dev, u16 status) { char * s; if (suppress_linkstatus) return; switch (status) { case HERMES_LINKSTATUS_NOT_CONNECTED: s = "Not Connected"; break; case HERMES_LINKSTATUS_CONNECTED: s = "Connected"; break; case HERMES_LINKSTATUS_DISCONNECTED: s = "Disconnected"; break; case HERMES_LINKSTATUS_AP_CHANGE: s = "AP Changed"; break; case HERMES_LINKSTATUS_AP_OUT_OF_RANGE: s = "AP Out of Range"; break; case HERMES_LINKSTATUS_AP_IN_RANGE: s = "AP In Range"; break; case HERMES_LINKSTATUS_ASSOC_FAILED: s = "Association Failed"; break; default: s = "UNKNOWN"; } printk(KERN_INFO "%s: New link status: %s (%04x)\n", dev->name, s, status); } /* Search scan results for requested BSSID, join it if found */ static void orinoco_join_ap(struct work_struct *work) { struct orinoco_private *priv = container_of(work, struct orinoco_private, join_work); struct net_device *dev = priv->ndev; struct hermes *hw = &priv->hw; int err; unsigned long flags; struct join_req { u8 bssid[ETH_ALEN]; __le16 channel; } __attribute__ ((packed)) req; const int atom_len = offsetof(struct prism2_scan_apinfo, atim); struct prism2_scan_apinfo *atom = NULL; int offset = 4; int found = 0; u8 *buf; u16 len; /* Allocate buffer for scan results */ buf = kmalloc(MAX_SCAN_LEN, GFP_KERNEL); if (! buf) return; if (orinoco_lock(priv, &flags) != 0) goto fail_lock; /* Sanity checks in case user changed something in the meantime */ if (! priv->bssid_fixed) goto out; if (strlen(priv->desired_essid) == 0) goto out; /* Read scan results from the firmware */ err = hermes_read_ltv(hw, USER_BAP, HERMES_RID_SCANRESULTSTABLE, MAX_SCAN_LEN, &len, buf); if (err) { printk(KERN_ERR "%s: Cannot read scan results\n", dev->name); goto out; } len = HERMES_RECLEN_TO_BYTES(len); /* Go through the scan results looking for the channel of the AP * we were requested to join */ for (; offset + atom_len <= len; offset += atom_len) { atom = (struct prism2_scan_apinfo *) (buf + offset); if (memcmp(&atom->bssid, priv->desired_bssid, ETH_ALEN) == 0) { found = 1; break; } } if (! found) { DEBUG(1, "%s: Requested AP not found in scan results\n", dev->name); goto out; } memcpy(req.bssid, priv->desired_bssid, ETH_ALEN); req.channel = atom->channel; /* both are little-endian */ err = HERMES_WRITE_RECORD(hw, USER_BAP, HERMES_RID_CNFJOINREQUEST, &req); if (err) printk(KERN_ERR "%s: Error issuing join request\n", dev->name); out: orinoco_unlock(priv, &flags); fail_lock: kfree(buf); } /* Send new BSSID to userspace */ static void orinoco_send_wevents(struct work_struct *work) { struct orinoco_private *priv = container_of(work, struct orinoco_private, wevent_work); struct net_device *dev = priv->ndev; struct hermes *hw = &priv->hw; union iwreq_data wrqu; int err; unsigned long flags; if (orinoco_lock(priv, &flags) != 0) return; err = hermes_read_ltv(hw, IRQ_BAP, HERMES_RID_CURRENTBSSID, ETH_ALEN, NULL, wrqu.ap_addr.sa_data); if (err != 0) goto out; wrqu.ap_addr.sa_family = ARPHRD_ETHER; /* Send event to user space */ wireless_send_event(dev, SIOCGIWAP, &wrqu, NULL); out: orinoco_unlock(priv, &flags); } static void __orinoco_ev_info(struct net_device *dev, hermes_t *hw) { struct orinoco_private *priv = netdev_priv(dev); u16 infofid; struct { __le16 len; __le16 type; } __attribute__ ((packed)) info; int len, type; int err; /* This is an answer to an INQUIRE command that we did earlier, * or an information "event" generated by the card * The controller return to us a pseudo frame containing * the information in question - Jean II */ infofid = hermes_read_regn(hw, INFOFID); /* Read the info frame header - don't try too hard */ err = hermes_bap_pread(hw, IRQ_BAP, &info, sizeof(info), infofid, 0); if (err) { printk(KERN_ERR "%s: error %d reading info frame. " "Frame dropped.\n", dev->name, err); return; } len = HERMES_RECLEN_TO_BYTES(le16_to_cpu(info.len)); type = le16_to_cpu(info.type); switch (type) { case HERMES_INQ_TALLIES: { struct hermes_tallies_frame tallies; struct iw_statistics *wstats = &priv->wstats; if (len > sizeof(tallies)) { printk(KERN_WARNING "%s: Tallies frame too long (%d bytes)\n", dev->name, len); len = sizeof(tallies); } err = hermes_bap_pread(hw, IRQ_BAP, &tallies, len, infofid, sizeof(info)); if (err) break; /* Increment our various counters */ /* wstats->discard.nwid - no wrong BSSID stuff */ wstats->discard.code += le16_to_cpu(tallies.RxWEPUndecryptable); if (len == sizeof(tallies)) wstats->discard.code += le16_to_cpu(tallies.RxDiscards_WEPICVError) + le16_to_cpu(tallies.RxDiscards_WEPExcluded); wstats->discard.misc += le16_to_cpu(tallies.TxDiscardsWrongSA); wstats->discard.fragment += le16_to_cpu(tallies.RxMsgInBadMsgFragments); wstats->discard.retries += le16_to_cpu(tallies.TxRetryLimitExceeded); /* wstats->miss.beacon - no match */ } break; case HERMES_INQ_LINKSTATUS: { struct hermes_linkstatus linkstatus; u16 newstatus; int connected; if (priv->iw_mode == IW_MODE_MONITOR) break; if (len != sizeof(linkstatus)) { printk(KERN_WARNING "%s: Unexpected size for linkstatus frame (%d bytes)\n", dev->name, len); break; } err = hermes_bap_pread(hw, IRQ_BAP, &linkstatus, len, infofid, sizeof(info)); if (err) break; newstatus = le16_to_cpu(linkstatus.linkstatus); /* Symbol firmware uses "out of range" to signal that * the hostscan frame can be requested. */ if (newstatus == HERMES_LINKSTATUS_AP_OUT_OF_RANGE && priv->firmware_type == FIRMWARE_TYPE_SYMBOL && priv->has_hostscan && priv->scan_inprogress) { hermes_inquire(hw, HERMES_INQ_HOSTSCAN_SYMBOL); break; } connected = (newstatus == HERMES_LINKSTATUS_CONNECTED) || (newstatus == HERMES_LINKSTATUS_AP_CHANGE) || (newstatus == HERMES_LINKSTATUS_AP_IN_RANGE); if (connected) netif_carrier_on(dev); else if (!ignore_disconnect) netif_carrier_off(dev); if (newstatus != priv->last_linkstatus) { priv->last_linkstatus = newstatus; print_linkstatus(dev, newstatus); /* The info frame contains only one word which is the * status (see hermes.h). The status is pretty boring * in itself, that's why we export the new BSSID... * Jean II */ schedule_work(&priv->wevent_work); } } break; case HERMES_INQ_SCAN: if (!priv->scan_inprogress && priv->bssid_fixed && priv->firmware_type == FIRMWARE_TYPE_INTERSIL) { schedule_work(&priv->join_work); break; } /* fall through */ case HERMES_INQ_HOSTSCAN: case HERMES_INQ_HOSTSCAN_SYMBOL: { /* Result of a scanning. Contains information about * cells in the vicinity - Jean II */ union iwreq_data wrqu; unsigned char *buf; /* Sanity check */ if (len > 4096) { printk(KERN_WARNING "%s: Scan results too large (%d bytes)\n", dev->name, len); break; } /* We are a strict producer. If the previous scan results * have not been consumed, we just have to drop this * frame. We can't remove the previous results ourselves, * that would be *very* racy... Jean II */ if (priv->scan_result != NULL) { printk(KERN_WARNING "%s: Previous scan results not consumed, dropping info frame.\n", dev->name); break; } /* Allocate buffer for results */ buf = kmalloc(len, GFP_ATOMIC); if (buf == NULL) /* No memory, so can't printk()... */ break; /* Read scan data */ err = hermes_bap_pread(hw, IRQ_BAP, (void *) buf, len, infofid, sizeof(info)); if (err) { kfree(buf); break; } #ifdef ORINOCO_DEBUG { int i; printk(KERN_DEBUG "Scan result [%02X", buf[0]); for(i = 1; i < (len * 2); i++) printk(":%02X", buf[i]); printk("]\n"); } #endif /* ORINOCO_DEBUG */ /* Allow the clients to access the results */ priv->scan_len = len; priv->scan_result = buf; /* Send an empty event to user space. * We don't send the received data on the event because * it would require us to do complex transcoding, and * we want to minimise the work done in the irq handler * Use a request to extract the data - Jean II */ wrqu.data.length = 0; wrqu.data.flags = 0; wireless_send_event(dev, SIOCGIWSCAN, &wrqu, NULL); } break; case HERMES_INQ_SEC_STAT_AGERE: /* Security status (Agere specific) */ /* Ignore this frame for now */ if (priv->firmware_type == FIRMWARE_TYPE_AGERE) break; /* fall through */ default: printk(KERN_DEBUG "%s: Unknown information frame received: " "type 0x%04x, length %d\n", dev->name, type, len); /* We don't actually do anything about it */ break; } } static void __orinoco_ev_infdrop(struct net_device *dev, hermes_t *hw) { if (net_ratelimit()) printk(KERN_DEBUG "%s: Information frame lost.\n", dev->name); } /********************************************************************/ /* Internal hardware control routines */ /********************************************************************/ int __orinoco_up(struct net_device *dev) { struct orinoco_private *priv = netdev_priv(dev); struct hermes *hw = &priv->hw; int err; netif_carrier_off(dev); /* just to make sure */ err = __orinoco_program_rids(dev); if (err) { printk(KERN_ERR "%s: Error %d configuring card\n", dev->name, err); return err; } /* Fire things up again */ hermes_set_irqmask(hw, ORINOCO_INTEN); err = hermes_enable_port(hw, 0); if (err) { printk(KERN_ERR "%s: Error %d enabling MAC port\n", dev->name, err); return err; } netif_start_queue(dev); return 0; } int __orinoco_down(struct net_device *dev) { struct orinoco_private *priv = netdev_priv(dev); struct hermes *hw = &priv->hw; int err; netif_stop_queue(dev); if (! priv->hw_unavailable) { if (! priv->broken_disableport) { err = hermes_disable_port(hw, 0); if (err) {