diff options
Diffstat (limited to 'src/vlib/buffer.h')
| -rw-r--r-- | src/vlib/buffer.h | 42 |
1 files changed, 40 insertions, 2 deletions
diff --git a/src/vlib/buffer.h b/src/vlib/buffer.h index 0fd57f5275b..c8761af4d20 100644 --- a/src/vlib/buffer.h +++ b/src/vlib/buffer.h @@ -158,9 +158,9 @@ typedef union /** start of 2nd cache line */ CLIB_CACHE_LINE_ALIGN_MARK (cacheline1); - /** Specifies index into trace buffer if VLIB_PACKET_IS_TRACED flag is + /** Specifies trace buffer handle if VLIB_PACKET_IS_TRACED flag is * set. */ - u32 trace_index; + u32 trace_handle; /** Only valid for first buffer in chain. Current length plus total length * given here give total number of bytes in buffer chain. */ @@ -354,6 +354,44 @@ vlib_buffer_make_headroom (vlib_buffer_t * b, u8 size) return vlib_buffer_get_current (b); } +/** \brief Construct a trace handle from thread and pool index + * @param thread Thread id + * @param pool_index Pool index + * @return trace handle + */ +always_inline u32 +vlib_buffer_make_trace_handle (u32 thread, u32 pool_index) +{ + u32 rv; + ASSERT (thread < 0xff); + ASSERT (pool_index < 0x00FFFFFF); + rv = (thread << 24) | (pool_index & 0x00FFFFFF); + return rv; +} + +/** \brief Extract the thread id from a trace handle + * @param trace_handle the trace handle + * @return the thread id + */ +always_inline u32 +vlib_buffer_get_trace_thread (vlib_buffer_t * b) +{ + u32 trace_handle = b->trace_handle; + + return trace_handle >> 24; +} + +/** \brief Extract the trace (pool) index from a trace handle + * @param trace_handle the trace handle + * @return the trace index + */ +always_inline u32 +vlib_buffer_get_trace_index (vlib_buffer_t * b) +{ + u32 trace_handle = b->trace_handle; + return trace_handle & 0x00FFFFFF; +} + /** \brief Retrieve bytes from buffer head * @param b pointer to the buffer * @param size number of bytes to pull |