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author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-06-16 21:15:42 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-06-16 21:15:42 -0700 |
commit | 0dd5198672dd2bbeb933862e1fc82162e0b636be (patch) | |
tree | c9efed20d90603c4d1626c21bd7aab1e7fc74a58 /drivers/media/dvb/dvb-core/dvb_demux.c | |
parent | c868d550115b9ccc0027c67265b9520790f05601 (diff) | |
parent | 11c635a25b9f3a5d87409ce46cf2e05c500251ec (diff) | |
download | op-kernel-dev-0dd5198672dd2bbeb933862e1fc82162e0b636be.zip op-kernel-dev-0dd5198672dd2bbeb933862e1fc82162e0b636be.tar.gz |
Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6: (425 commits)
V4L/DVB (11870): gspca - main: VIDIOC_ENUM_FRAMESIZES ioctl added.
V4L/DVB (12004): poll method lose race condition
V4L/DVB (11894): flexcop-pci: dmesg visible names broken
V4L/DVB (11892): Siano: smsendian - declare function as extern
V4L/DVB (11891): Siano: smscore - bind the GPIO SMS protocol
V4L/DVB (11890): Siano: smscore - remove redundant code
V4L/DVB (11889): Siano: smsdvb - add DVB v3 events
V4L/DVB (11888): Siano: smsusb - remove redundant ifdef
V4L/DVB (11887): Siano: smscards - add board (target) events
V4L/DVB (11886): Siano: smscore - fix some new GPIO definitions names
V4L/DVB (11885): Siano: Add new GPIO management interface
V4L/DVB (11884): Siano: smssdio - revert to stand alone module
V4L/DVB (11883): Siano: cards - add two additional (USB) devices
V4L/DVB (11824): Siano: smsusb - change exit func debug msg
V4L/DVB (11823): Siano: smsusb - fix typo in module description
V4L/DVB (11822): Siano: smscore - bug fix at get_device_mode
V4L/DVB (11821): Siano: smscore - fix isdb-t firmware name
V4L/DVB (11820): Siano: smscore - fix byte ordering bug
V4L/DVB (11819): Siano: smscore - fix get_common_buffer bug
V4L/DVB (11818): Siano: smscards - assign gpio to HPG targets
...
Diffstat (limited to 'drivers/media/dvb/dvb-core/dvb_demux.c')
-rw-r--r-- | drivers/media/dvb/dvb-core/dvb_demux.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/drivers/media/dvb/dvb-core/dvb_demux.c b/drivers/media/dvb/dvb-core/dvb_demux.c index e2eca0b..cfe2768 100644 --- a/drivers/media/dvb/dvb-core/dvb_demux.c +++ b/drivers/media/dvb/dvb-core/dvb_demux.c @@ -38,6 +38,16 @@ */ // #define DVB_DEMUX_SECTION_LOSS_LOG +static int dvb_demux_tscheck; +module_param(dvb_demux_tscheck, int, 0644); +MODULE_PARM_DESC(dvb_demux_tscheck, + "enable transport stream continuity and TEI check"); + +#define dprintk_tscheck(x...) do { \ + if (dvb_demux_tscheck && printk_ratelimit()) \ + printk(x); \ + } while (0) + /****************************************************************************** * static inlined helper functions ******************************************************************************/ @@ -376,6 +386,36 @@ static void dvb_dmx_swfilter_packet(struct dvb_demux *demux, const u8 *buf) u16 pid = ts_pid(buf); int dvr_done = 0; + if (dvb_demux_tscheck) { + if (!demux->cnt_storage) + demux->cnt_storage = vmalloc(MAX_PID + 1); + + if (!demux->cnt_storage) { + printk(KERN_WARNING "Couldn't allocate memory for TS/TEI check. Disabling it\n"); + dvb_demux_tscheck = 0; + goto no_dvb_demux_tscheck; + } + + /* check pkt counter */ + if (pid < MAX_PID) { + if (buf[1] & 0x80) + dprintk_tscheck("TEI detected. " + "PID=0x%x data1=0x%x\n", + pid, buf[1]); + + if ((buf[3] & 0xf) != demux->cnt_storage[pid]) + dprintk_tscheck("TS packet counter mismatch. " + "PID=0x%x expected 0x%x " + "got 0x%x\n", + pid, demux->cnt_storage[pid], + buf[3] & 0xf); + + demux->cnt_storage[pid] = ((buf[3] & 0xf) + 1)&0xf; + }; + /* end check */ + }; +no_dvb_demux_tscheck: + list_for_each_entry(feed, &demux->feed_list, list_head) { if ((feed->pid != pid) && (feed->pid != 0x2000)) continue; @@ -1160,6 +1200,7 @@ int dvb_dmx_init(struct dvb_demux *dvbdemux) int i; struct dmx_demux *dmx = &dvbdemux->dmx; + dvbdemux->cnt_storage = NULL; dvbdemux->users = 0; dvbdemux->filter = vmalloc(dvbdemux->filternum * sizeof(struct dvb_demux_filter)); @@ -1226,6 +1267,7 @@ EXPORT_SYMBOL(dvb_dmx_init); void dvb_dmx_release(struct dvb_demux *dvbdemux) { + vfree(dvbdemux->cnt_storage); vfree(dvbdemux->filter); vfree(dvbdemux->feed); } |