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| author | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2017-12-11 11:37:26 -0500 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2017-12-19 06:29:27 -0500 |
| commit | ba711e1cee755392a23686a47a64cdedbdb6e13e (patch) | |
| tree | 94d802cd4bb24d2a369f9eba7dc528ba489881f4 | |
| parent | b93a25e120d5a4154c8902957e7440b10b47a260 (diff) | |
| download | linux-ba711e1cee755392a23686a47a64cdedbdb6e13e.tar.bz2 | |
media: dvb-core: allow users to enable DVB net ULE debug
This debug option is there for a long time, but it is only
enabled by editing the source code. Due to that, a breakage
inside its code was only noticed years after a change at
the ULE handling logic.
Make it a Kconfig parameter, as it makes easier for
advanced users to enable, and allow test if the compilation
won't be broken in the future.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
| -rw-r--r-- | drivers/media/dvb-core/Kconfig | 13 | ||||
| -rw-r--r-- | drivers/media/dvb-core/dvb_net.c | 14 |
2 files changed, 18 insertions, 9 deletions
diff --git a/drivers/media/dvb-core/Kconfig b/drivers/media/dvb-core/Kconfig index eeef94a0c84e..f004aea352e0 100644 --- a/drivers/media/dvb-core/Kconfig +++ b/drivers/media/dvb-core/Kconfig @@ -40,3 +40,16 @@ config DVB_DEMUX_SECTION_LOSS_LOG be very verbose. If you are unsure about this, say N here. + +config DVB_ULE_DEBUG + bool "Enable DVB net ULE packet debug messages" + depends on DVB_CORE + default n + help + Enable extra log messages meant to detect problems while + handling DVB network ULE packet loss inside the Kernel. + + Should not be enabled on normal cases, as logs can + be very verbose. + + If you are unsure about this, say N here. diff --git a/drivers/media/dvb-core/dvb_net.c b/drivers/media/dvb-core/dvb_net.c index 2e41a8785847..bff2b8ec1b77 100644 --- a/drivers/media/dvb-core/dvb_net.c +++ b/drivers/media/dvb-core/dvb_net.c @@ -38,7 +38,7 @@ * Competence Center for Advanced Satellite Communications. * Bugfixes and robustness improvements. * Filtering on dest MAC addresses, if present (D-Bit = 0) - * ULE_DEBUG compile-time option. + * DVB_ULE_DEBUG compile-time option. * Apr 2006: cp v3: Bugfixes and compliency with RFC 4326 (ULE) by * Christian Praehauser <cpraehaus@cosy.sbg.ac.at>, * Paris Lodron University of Salzburg. @@ -78,12 +78,9 @@ static inline __u32 iov_crc32( __u32 c, struct kvec *iov, unsigned int cnt ) #define DVB_NET_MULTICAST_MAX 10 -#undef ULE_DEBUG - -#ifdef ULE_DEBUG - +#ifdef DVB_ULE_DEBUG /* - * The code inside ULE_DEBUG keeps a history of the + * The code inside DVB_ULE_DEBUG keeps a history of the * last 100 TS cells processed. */ static unsigned char ule_hist[100*TS_SZ] = { 0 }; @@ -93,7 +90,6 @@ static void hexdump(const unsigned char *buf, unsigned short len) { print_hex_dump_debug("", DUMP_PREFIX_OFFSET, 16, 1, buf, len, true); } - #endif struct dvb_net_priv { @@ -333,7 +329,7 @@ static int dvb_net_ule_new_ts_cell(struct dvb_net_ule_handle *h) { /* We are about to process a new TS cell. */ -#ifdef ULE_DEBUG +#ifdef DVB_ULE_DEBUG if (ule_where >= &ule_hist[100*TS_SZ]) ule_where = ule_hist; memcpy(ule_where, h->ts, TS_SZ); @@ -672,7 +668,7 @@ static void dvb_net_ule_check_crc(struct dvb_net_ule_handle *h, h->ts_remain > 2 ? *(unsigned short *)h->from_where : 0); - #ifdef ULE_DEBUG + #ifdef DVB_ULE_DEBUG hexdump(iov[0].iov_base, iov[0].iov_len); hexdump(iov[1].iov_base, iov[1].iov_len); hexdump(iov[2].iov_base, iov[2].iov_len); |