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For each forward engine, there may be some special conditions must be met before the forwarding runs. Adding checks for these conditions in configuring is not suitable, because one condition may rely on multiple configurations, and the conditions required by each forward engine is not general. The best solution is each forward engine has a callback to check whether these conditions are met, and then testpmd can call the callback to determine whether the forwarding can be started. There was a void callback 'port_fwd_begin' in forward engine, it did some initialization for forwarding, this patch updates its return value then we can add some checks in it to confirm whether the forwarding can be started. In addition, this patch calls the callback before the forwarding stats is reset and then launches the forwarding engine. Bugzilla ID: 797 Cc: stable@dpdk.org Signed-off-by: Alvin Zhang <alvinx.zhang@intel.com> Acked-by: Xiaoyun Li <xiaoyun.li@intel.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