d8a210774e
This patch enables the unaligned chunks feature for AF_XDP which allows chunks to be placed at arbitrary places in the umem, as opposed to them being required to be aligned to 2k. This allows for DPDK application mempools to be mapped directly into the umem and in turn enable zero copy transfer between umem and the PMD. This patch replaces the zero copy via external mbuf mechanism introduced in commit e9ff8bb71943 ("net/af_xdp: enable zero copy by external mbuf"). The pmd_zero copy vdev argument is also removed as now the PMD will auto-detect presence of the unaligned chunks feature and enable it if so and otherwise fall back to copy mode if not detected. Signed-off-by: Ciara Loftus <ciara.loftus@intel.com> Signed-off-by: Kevin Laatz <kevin.laatz@intel.com> Reviewed-by: Xiaolong Ye <xiaolong.ye@intel.com>