diff options
Diffstat (limited to 'nuttx/net/iob/iob_copyin.c')
| -rw-r--r-- | nuttx/net/iob/iob_copyin.c | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/nuttx/net/iob/iob_copyin.c b/nuttx/net/iob/iob_copyin.c index 0c9b3f037..fedd37098 100644 --- a/nuttx/net/iob/iob_copyin.c +++ b/nuttx/net/iob/iob_copyin.c @@ -39,6 +39,13 @@ #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 <stdint.h> #include <string.h> #include <errno.h> @@ -91,13 +98,14 @@ int iob_copyin(FAR struct iob_s *iob, FAR const uint8_t *src, unsigned int ncopy; unsigned int avail; + nllvdbg("iob=%p len=%u offset=%u\n", iob, len, offset); DEBUGASSERT(iob && src); /* The offset must applied to data that is already in the I/O buffer chain */ if (offset > iob->io_pktlen) { - ndbg("ERROR: offset is past the end of data: %d > %d\n", + ndbg("ERROR: offset is past the end of data: %u > %u\n", offset, iob->io_pktlen); return -ESPIPE; } @@ -123,6 +131,8 @@ int iob_copyin(FAR struct iob_s *iob, FAR const uint8_t *src, dest = &iob->io_data[iob->io_offset + offset]; avail = iob->io_len - offset; + nllvdbg("iob=%p avail=%u len=%u next=%p\n", iob, avail, len, next); + /* Will the rest of the copy fit into this buffer, overwriting * existing data. */ @@ -146,7 +156,7 @@ int iob_copyin(FAR struct iob_s *iob, FAR const uint8_t *src, /* Yes.. We can extend this buffer to the up to the very end. */ - maxlen = CONFIG_IOB_BUFSIZE - iob->io_offset; + maxlen = CONFIG_IOB_BUFSIZE - iob->io_offset; /* This is the new buffer length that we need. Of course, * clipped to the maximum possible size in this buffer. @@ -178,6 +188,8 @@ int iob_copyin(FAR struct iob_s *iob, FAR const uint8_t *src, /* Copy from the user buffer to the I/O buffer. */ memcpy(dest, src, ncopy); + nllvdbg("iob=%p, Copy %u bytes, new len=%u\n", + iob, ncopy, iob->io_len); /* Adjust the total length of the copy and the destination address in * the user buffer. @@ -204,6 +216,7 @@ int iob_copyin(FAR struct iob_s *iob, FAR const uint8_t *src, /* Add the new, empty I/O buffer to the end of the buffer chain. */ iob->io_flink = next; + nllvdbg("iob=%p added to the chain\n", iob); } iob = next; |