Signed-off-by: Cristian Dumitrescu <cristian.dumitrescu at intel.com> --- doc/guides/rel_notes/abi.rst | 12 ++++++++++++ 1 files changed, 12 insertions(+), 0 deletions(-)
diff --git a/doc/guides/rel_notes/abi.rst b/doc/guides/rel_notes/abi.rst index 9e98d62..271e08e 100644 --- a/doc/guides/rel_notes/abi.rst +++ b/doc/guides/rel_notes/abi.rst @@ -34,3 +34,15 @@ Deprecation Notices creates a dummy/empty malloc library to fulfill binaries with dynamic linking dependencies on librte_malloc.so. Such dummy library will not be created from release 2.2 so binaries will need to be rebuilt. + +* librte_port (rte_port.h): Macros to access the packet meta-data stored within + the packet buffer will be adjusted to cover the packet mbuf structure as well, + as currently they are able to access any packet buffer location except the + packet mbuf structure. The consequence is that applications currently using + these macros will have to adjust the value of the offset parameter of these + macros by increasing it with sizeof(struc rte_mbuf). The affected macros are: + RTE_MBUF_METADATA_UINT<8, 16, 32, 64>_PTR and + RTE_MBUF_METADATA_UINT<8, 16, 32, 64>. In terms of code changes, most likely + only the definition of RTE_MBUF_METADATA_UINT8_PTR macro will be changed from + ``(&((uint8_t *) &(mbuf)[1])[offset])`` to + ``(&((uint8_t *) (mbuf))[offset])``. -- 1.7.4.1
