diff options
Diffstat (limited to 'nuttx/net/iob/iob_free.c')
| -rw-r--r-- | nuttx/net/iob/iob_free.c | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/nuttx/net/iob/iob_free.c b/nuttx/net/iob/iob_free.c index 75d70e080..68c7fb264 100644 --- a/nuttx/net/iob/iob_free.c +++ b/nuttx/net/iob/iob_free.c @@ -39,7 +39,16 @@ #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 <semaphore.h> #include <assert.h> +#include <debug.h> #include <nuttx/arch.h> #include <nuttx/net/iob.h> @@ -80,13 +89,15 @@ FAR struct iob_s *iob_free(FAR struct iob_s *iob) FAR struct iob_s *next = iob->io_flink; irqstate_t flags; + nllvdbg("iob=%p io_pktlen=%u io_len=%u next=%p\n", + iob, iob->io_pktlen, iob->io_len, next); + /* Copy the data that only exists in the head of a I/O buffer chain into * the next entry. */ if (next) { - /* Copy and decrement the total packet length, being careful to * do nothing too crazy. */ @@ -107,6 +118,9 @@ FAR struct iob_s *iob_free(FAR struct iob_s *iob) next->io_pktlen = 0; DEBUGASSERT(next->io_len == 0 && next->io_flink == NULL); } + + nllvdbg("next=%p io_pktlen=%u io_len=%u\n", + next, next->io_pktlen, next->io_len); } /* Free the I/O buffer by adding it to the head of the free list. We don't @@ -115,8 +129,12 @@ FAR struct iob_s *iob_free(FAR struct iob_s *iob) */ flags = irqsave(); - iob->io_flink = g_iob_freelist; + iob->io_flink = g_iob_freelist; g_iob_freelist = iob; + + /* Signal that an IOB is available */ + + sem_post(&g_iob_sem); irqrestore(flags); /* And return the I/O buffer after the one that was freed */ |