fb5e906940
Currently, the driver get packet type by parse the L3_ID/L4_ID/OL3_ID/OL4_ID from Rx descriptor and then lookup multiple tables, it's time consuming. Now Kunpeng930 support advanced RXD layout, which: 1. Combine OL3_ID/OL4_ID to 8bit PTYPE filed, so the driver get packet type by lookup only one table. Note: L3_ID/L4_ID become reserved fields. 2. The 1588 timestamp located at Rx descriptor instead of query from firmware. 3. The L3E/L4E/OL3E/OL4E will be zero when L3L4P is zero, so driver could optimize the good checksum calculations (when L3E/L4E is zero then mark PKT_RX_IP_CKSUM_GOOD/PKT_RX_L4_CKSUM_GOOD). Considering compatibility, the firmware will report capability of RXD advanced layout, the driver will identify and enable it by default. This patch only provides basic function: identify and enable the RXD advanced layout, and lookup ptype table if supported. Signed-off-by: Chengwen Feng <fengchengwen@huawei.com> Signed-off-by: Lijun Ou <oulijun@huawei.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