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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>
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@ -40,3 +40,16 @@ config DVB_DEMUX_SECTION_LOSS_LOG
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be very verbose.
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If you are unsure about this, say N here.
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config DVB_ULE_DEBUG
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bool "Enable DVB net ULE packet debug messages"
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depends on DVB_CORE
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default n
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help
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Enable extra log messages meant to detect problems while
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handling DVB network ULE packet loss inside the Kernel.
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Should not be enabled on normal cases, as logs can
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be very verbose.
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If you are unsure about this, say N here.
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@ -38,7 +38,7 @@
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* Competence Center for Advanced Satellite Communications.
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* Bugfixes and robustness improvements.
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* Filtering on dest MAC addresses, if present (D-Bit = 0)
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* ULE_DEBUG compile-time option.
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* DVB_ULE_DEBUG compile-time option.
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* Apr 2006: cp v3: Bugfixes and compliency with RFC 4326 (ULE) by
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* Christian Praehauser <cpraehaus@cosy.sbg.ac.at>,
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* Paris Lodron University of Salzburg.
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@ -78,12 +78,9 @@ static inline __u32 iov_crc32( __u32 c, struct kvec *iov, unsigned int cnt )
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#define DVB_NET_MULTICAST_MAX 10
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#undef ULE_DEBUG
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#ifdef ULE_DEBUG
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#ifdef DVB_ULE_DEBUG
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/*
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* The code inside ULE_DEBUG keeps a history of the
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* The code inside DVB_ULE_DEBUG keeps a history of the
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* last 100 TS cells processed.
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*/
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static unsigned char ule_hist[100*TS_SZ] = { 0 };
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@ -93,7 +90,6 @@ static void hexdump(const unsigned char *buf, unsigned short len)
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{
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print_hex_dump_debug("", DUMP_PREFIX_OFFSET, 16, 1, buf, len, true);
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}
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#endif
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struct dvb_net_priv {
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@ -333,7 +329,7 @@ static int dvb_net_ule_new_ts_cell(struct dvb_net_ule_handle *h)
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{
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/* We are about to process a new TS cell. */
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#ifdef ULE_DEBUG
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#ifdef DVB_ULE_DEBUG
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if (ule_where >= &ule_hist[100*TS_SZ])
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ule_where = ule_hist;
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memcpy(ule_where, h->ts, TS_SZ);
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@ -672,7 +668,7 @@ static void dvb_net_ule_check_crc(struct dvb_net_ule_handle *h,
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h->ts_remain > 2 ?
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*(unsigned short *)h->from_where : 0);
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#ifdef ULE_DEBUG
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#ifdef DVB_ULE_DEBUG
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hexdump(iov[0].iov_base, iov[0].iov_len);
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hexdump(iov[1].iov_base, iov[1].iov_len);
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hexdump(iov[2].iov_base, iov[2].iov_len);
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