120dc4a7dc
UAR (User Access Region) register does not need to be remapped for primary process but it should be remapped only for secondary process. UAR register table is in the process private structure in rte_eth_devices[], (struct mlx5_proc_priv *)rte_eth_devices[port_id].process_private The actual UAR table follows the data structure and the table is used for both Tx and Rx. For Tx, BlueFlame in UAR is used to ring the doorbell. MLX5_TX_BFREG(txq) is defined to get a register for the txq. Processes access its own private data to acquire the register from the UAR table. For Rx, the doorbell in UAR is required in arming CQ event. However, it is a known issue that the register isn't remapped for secondary process. Signed-off-by: Yongseok Koh <yskoh@mellanox.com>
DPDK is a set of libraries and drivers for fast packet processing. It supports many processor architectures and both FreeBSD and Linux. The DPDK uses the Open Source BSD-3-Clause license for the core libraries and drivers. The kernel components are GPL-2.0 licensed. Please check the doc directory for release notes, API documentation, and sample application information. For questions and usage discussions, subscribe to: users@dpdk.org Report bugs and issues to the development mailing list: dev@dpdk.org