diff options
Diffstat (limited to 'nuttx/net/iob/iob_trimhead.c')
| -rw-r--r-- | nuttx/net/iob/iob_trimhead.c | 33 |
1 files changed, 22 insertions, 11 deletions
diff --git a/nuttx/net/iob/iob_trimhead.c b/nuttx/net/iob/iob_trimhead.c index 0fe349023..6ea684b9a 100644 --- a/nuttx/net/iob/iob_trimhead.c +++ b/nuttx/net/iob/iob_trimhead.c @@ -39,7 +39,15 @@ #include <nuttx/config.h> +#if defined(CONFIG_DEBUG) && defined(CONFIG_NET_IOB_DEBUG) +/* Force debug output (from this file only) */ + +# undef CONFIG_DEBUG_NET +# define CONFIG_DEBUG_NET 1 +#endif + #include <assert.h> +#include <debug.h> #include <nuttx/net/iob.h> @@ -81,20 +89,22 @@ FAR struct iob_s *iob_trimhead(FAR struct iob_s *iob, unsigned int trimlen) { uint16_t pktlen; - unsigned int len; + + nllvdbg("iob=%p trimlen=%d\n", iob, trimlen); if (iob && trimlen > 0) { /* Trim from the head of the I/IO buffer chain */ pktlen = iob->io_pktlen; - len = trimlen; - - while (len > 0 && iob != NULL) + while (trimlen > 0 && iob != NULL) { /* Do we trim this entire I/O buffer away? */ - if (iob->io_len <= len) + nllvdbg("iob=%p io_len=%d pktlen=%d trimlen=%d\n", + iob, iob->io_len, pktlen, trimlen); + + if (iob->io_len <= trimlen) { FAR struct iob_s *next; @@ -103,7 +113,7 @@ FAR struct iob_s *iob_trimhead(FAR struct iob_s *iob, unsigned int trimlen) */ pktlen -= iob->io_len; - len -= iob->io_len; + trimlen -= iob->io_len; iob->io_len = 0; iob->io_offset = 0; @@ -122,8 +132,9 @@ FAR struct iob_s *iob_trimhead(FAR struct iob_s *iob, unsigned int trimlen) /* Free this entry and set the next I/O buffer as the head */ + nllvdbg("iob=%p: Freeing\n", iob); (void)iob_free(iob); - iob = next; + iob = next; } else { @@ -131,10 +142,10 @@ FAR struct iob_s *iob_trimhead(FAR struct iob_s *iob, unsigned int trimlen) * stop the trim. */ - pktlen -= len; - iob->io_len -= len; - iob->io_offset += len; - len = 0; + pktlen -= trimlen; + iob->io_len -= trimlen; + iob->io_offset += trimlen; + trimlen = 0; } } |