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path: root/drivers/isdn/mISDN/layer2.c (follow)
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2017-08-11mISDN: Fix null pointer dereference at mISDN_FsmNewAnton Vasilyev1-2/+13
If mISDN_FsmNew() fails to allocate memory for jumpmatrix then null pointer dereference will occur on any write to jumpmatrix. The patch adds check on successful allocation and corresponding error handling. Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Anton Vasilyev <vasilyev@ispras.ru> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-16networking: introduce and use skb_put_data()Johannes Berg1-4/+4
A common pattern with skb_put() is to just want to memcpy() some data into the new space, introduce skb_put_data() for this. An spatch similar to the one for skb_put_zero() converts many of the places using it: @@ identifier p, p2; expression len, skb, data; type t, t2; @@ ( -p = skb_put(skb, len); +p = skb_put_data(skb, data, len); | -p = (t)skb_put(skb, len); +p = skb_put_data(skb, data, len); ) ( p2 = (t2)p; -memcpy(p2, data, len); | -memcpy(p, data, len); ) @@ type t, t2; identifier p, p2; expression skb, data; @@ t *p; ... ( -p = skb_put(skb, sizeof(t)); +p = skb_put_data(skb, data, sizeof(t)); | -p = (t *)skb_put(skb, sizeof(t)); +p = skb_put_data(skb, data, sizeof(t)); ) ( p2 = (t2)p; -memcpy(p2, data, sizeof(*p)); | -memcpy(p, data, sizeof(*p)); ) @@ expression skb, len, data; @@ -memcpy(skb_put(skb, len), data, len); +skb_put_data(skb, data, len); (again, manually post-processed to retain some comments) Reviewed-by: Stephen Hemminger <stephen@networkplumber.org> Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-10-22mISDN: fix OOM condition for sending queued I-FramesKarsten Keil1-34/+20
The old code did not check the return value of skb_clone(). The extra skb_clone() is not needed at all, if using skb_realloc_headroom() instead, which gives us a private copy with enough headroom as well. We need to requeue the original skb if the call failed, because we cannot inform upper layers about the data loss. Restructure the code to minimise rollback effort if it happens. This fix kernel bug #86091 Thanks to Insu Yun <wuninsu@gmail.com> to remind me on this issue. Signed-off-by: Karsten Keil <keil@b1-systems.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-08-06mISDN: Bugfix for layer2 fixed TEI modeKarsten Keil1-1/+1
If a fixed TEI is used, the initial state of the layer 2 statmachine need to be 4 (TEI assigned). This was true only for Point to Point connections, but not for the other fixed TEIs. It was not found before, because usually only the TEI 0 is used as fixed TEI for PtP mode, but if you try X31 packet mode connections with SAPI 16, TEI 1, it did fail. Signed-off-by: Karsten Keil <keil@b1-systems.de> Cc: <stable@vger.kernel.org> # 3.5.x Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-04mISDN: Help to identify the cardKarsten Keil1-32/+44
With multiple cards is hard to figure out which port caused trouble int the layer2 routines (e.g. got a timeout). Now we have the informations in the log output. Signed-off-by: Karsten Keil <kkeil@linux-pingi.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-05-04mISDN: L2 timeouts need to be queued as L2 eventKarsten Keil1-5/+53
To be full preemptiv safe, we cannot handle a L2 timeout in the timer context itself, we should do all actions via the D-channel thread. Signed-off-by: Karsten Keil <kkeil@linux-pingi.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2012-02-21isdn: whitespace coding style cleanupJoe Perches1-49/+48
isdn source code uses a not-current coding style. Update the coding style used on a per-line basis so that git diff -w shows only elided blank lines at EOF. Done with emacs and some scripts and some typing. Built x86 allyesconfig. No detected change in objdump -d or size. Signed-off-by: Joe Perches <joe@perches.com>
2011-04-11Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6David S. Miller1-2/+2
Conflicts: drivers/net/smsc911x.c
2011-04-03mISDN: fix "persistant" typoJan Engelhardt1-10/+10
Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-03-31Fix common misspellingsLucas De Marchi1-2/+2
Fixes generated by 'codespell' and manually reviewed. Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
2010-11-16drivers/isdn/mISDN: Use printf extension %pVJoe Perches1-3/+9
Using %pV reduces the number of printk calls and eliminates any possible message interleaving from other printk calls. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-03-30include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.hTejun Heo1-0/+1
percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo <tj@kernel.org> Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2009-07-25ISDN: ARRAY_SIZE changesKarsten Keil1-2/+0
These changes were a direct result of using a semantic patch More information can be found at http://www.emn.fr/x-info/coccinelle/ Modified some of the changes to avoid the extra define. Signed-off-by: Stoyan Gaydarov <sgayda2@uiuc.edu> Signed-off-by: Karsten Keil <keil@b1-systems.de>
2009-05-25mISDN: Add "sapi" information to debug messagesAndreas Eversberg1-13/+11
Using sapi values other than 0 work now. The "OpenBSC" project does not require special kernel patch anymore. Signed-off-by: Andreas Eversberg <andreas@eversberg.eu> Signed-off-by: Karsten Keil <keil@b1-systems.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-05-25mISDN: Fix TEI and SAPI handlingAndreas Eversberg1-6/+7
Added SAPI value to use SAPIs different than 0. Now fixed TEIs work in NT mode. This allows PTP endpoint to be connected to PTMP ports together with other PTMP endpoints. New enhanced version, thanks to Sam Ravnborg <sam@ravnborg.org> for the hints. Signed-off-by: Andreas Eversberg <andreas@eversberg.eu> Signed-off-by: Karsten Keil <keil@b1-systems.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-12mISDN: make global symbols static or include header filesHannes Eder1-6/+8
The warnings fixed by including an header file for the appropriate prototype are marked with "*", for all others the corresonponding symbol has been made static. This patch fixes all such issues in mISDN. Fix this sparse warnings: drivers/isdn/hardware/mISDN/hfcmulti.c:174:5: warning: symbol 'plxsd_master' was not declared. Should it be static? drivers/isdn/hardware/mISDN/hfcmulti.c:426:1: warning: symbol 'write_fifo_regio' was not declared. Should it be static? drivers/isdn/hardware/mISDN/hfcmulti.c:447:1: warning: symbol 'write_fifo_pcimem' was not declared. Should it be static? drivers/isdn/hardware/mISDN/hfcmulti.c:469:1: warning: symbol 'read_fifo_regio' was not declared. Should it be static? drivers/isdn/hardware/mISDN/hfcmulti.c:491:1: warning: symbol 'read_fifo_pcimem' was not declared. Should it be static? drivers/isdn/hardware/mISDN/hfcmulti.c:710:1: warning: symbol 'vpm_init' was not declared. Should it be static? drivers/isdn/hardware/mISDN/hfcmulti.c:793:1: warning: symbol 'vpm_check' was not declared. Should it be static? drivers/isdn/hardware/mISDN/hfcmulti.c:816:1: warning: symbol 'vpm_echocan_on' was not declared. Should it be static? drivers/isdn/hardware/mISDN/hfcmulti.c:848:1: warning: symbol 'vpm_echocan_off' was not declared. Should it be static? * drivers/isdn/mISDN/l1oip_codec.c:224:1: warning: symbol 'l1oip_law_to_4bit' was not declared. Should it be static? * drivers/isdn/mISDN/l1oip_codec.c:261:1: warning: symbol 'l1oip_4bit_to_law' was not declared. Should it be static? * drivers/isdn/mISDN/l1oip_codec.c:281:1: warning: symbol 'l1oip_alaw_to_ulaw' was not declared. Should it be static? * drivers/isdn/mISDN/l1oip_codec.c:294:1: warning: symbol 'l1oip_ulaw_to_alaw' was not declared. Should it be static? * drivers/isdn/mISDN/l1oip_codec.c:311:1: warning: symbol 'l1oip_4bit_free' was not declared. Should it be static? * drivers/isdn/mISDN/l1oip_codec.c:322:1: warning: symbol 'l1oip_4bit_alloc' was not declared. Should it be static? drivers/isdn/mISDN/core.c:29:1: warning: symbol 'device_lock' was not declared. Should it be static? drivers/isdn/mISDN/core.c:34:1: warning: symbol 'bp_lock' was not declared. Should it be static? drivers/isdn/mISDN/core.c:196:1: warning: symbol 'mISDNInit' was not declared. Should it be static? drivers/isdn/mISDN/core.c:227:6: warning: symbol 'mISDN_cleanup' was not declared. Should it be static? drivers/isdn/mISDN/stack.c:40:1: warning: symbol 'mISDN_queue_message' was not declared. Should it be static? * drivers/isdn/mISDN/layer1.c:388:1: warning: symbol 'l1_init' was not declared. Should it be static? * drivers/isdn/mISDN/layer1.c:400:1: warning: symbol 'l1_cleanup' was not declared. Should it be static? drivers/isdn/mISDN/layer2.c:469:1: warning: symbol 'iframe_error' was not declared. Should it be static? drivers/isdn/mISDN/layer2.c:487:1: warning: symbol 'super_error' was not declared. Should it be static? drivers/isdn/mISDN/layer2.c:496:1: warning: symbol 'unnum_error' was not declared. Should it be static? drivers/isdn/mISDN/layer2.c:509:1: warning: symbol 'UI_error' was not declared. Should it be static? drivers/isdn/mISDN/layer2.c:522:1: warning: symbol 'FRMR_error' was not declared. Should it be static? drivers/isdn/mISDN/layer2.c:1069:1: warning: symbol 'enquiry_cr' was not declared. Should it be static? * drivers/isdn/mISDN/layer2.c:2196:1: warning: symbol 'Isdnl2_Init' was not declared. Should it be static? * drivers/isdn/mISDN/layer2.c:2210:1: warning: symbol 'Isdnl2_cleanup' was not declared. Should it be static? drivers/isdn/mISDN/tei.c:397:1: warning: symbol 'random_ri' was not declared. Should it be static? * drivers/isdn/mISDN/timerdev.c:277:1: warning: symbol 'mISDN_inittimer' was not declared. Should it be static? * drivers/isdn/mISDN/timerdev.c:288:6: warning: symbol 'mISDN_timer_cleanup' was not declared. Should it be static? drivers/isdn/mISDN/dsp_core.c:164:12: warning: symbol 'mISDN_dsp_revision' was not declared. Should it be static? drivers/isdn/mISDN/dsp_cmx.c:1543:5: warning: symbol 'samplecount' was not declared. Should it be static? drivers/isdn/mISDN/dsp_cmx.c:1546:5: warning: symbol 'dsp_start_jiffies' was not declared. Should it be static? drivers/isdn/mISDN/dsp_cmx.c:1547:16: warning: symbol 'dsp_start_tv' was not declared. Should it be static? drivers/isdn/mISDN/dsp_tones.c:239:3: warning: symbol 'pattern' was not declared. Should it be static? drivers/isdn/mISDN/dsp_audio.c:33:4: warning: symbol 'dsp_audio_ulaw_to_alaw' was not declared. Should it be static? Signed-off-by: Hannes Eder <hannes@hanneseder.net> Acked-by: Karsten Keil <kkeil@suse.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-12-12mISDN: consistently define 'debug' as '*u_int'Hannes Eder1-1/+1
Impact: change data type for variable 'debug' from *int to *u_int, same for the argument type of mISDN_inittimer In "core.h" mISDN_inittimer is declared with the argument type "*u_int", make the definition in "timerdev.c" match this. This fixes also this warnings: drivers/isdn/mISDN/layer1.c:391:8: warning: incorrect type in assignment (different signedness) drivers/isdn/mISDN/layer1.c:391:8: expected int *static [toplevel] debug drivers/isdn/mISDN/layer1.c:391:8: got unsigned int [usertype] *deb drivers/isdn/mISDN/layer2.c:2200:8: warning: incorrect type in assignment (different signedness) drivers/isdn/mISDN/layer2.c:2200:8: expected int *static [toplevel] debug drivers/isdn/mISDN/layer2.c:2200:8: got unsigned int [usertype] *deb drivers/isdn/mISDN/socket.c:769:8: warning: incorrect type in assignment (different signedness) drivers/isdn/mISDN/socket.c:769:8: expected int *static [toplevel] debug drivers/isdn/mISDN/socket.c:769:8: got unsigned int [usertype] *deb Signed-off-by: Hannes Eder <hannes@hanneseder.net> Acked-by: Karsten Keil <kkeil@suse.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-27Fix namespace issue with HisaxKarsten Keil1-1/+1
you can pull this git://git./linux/kernel/git/kkeil/ISDN-2.6 master rename release_tei() to TEIrelease() because release_tei() was already exported bei the old HiSax driver. Signed-off-by: Karsten Keil <kkeil@suse.de>
2008-07-27Add mISDN core filesKarsten Keil1-0/+2216
Add mISDN core files Signed-off-by: Karsten Keil <kkeil@suse.de>
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