13/07/2017 15:02, Hemant Agrawal: > On 7/10/2017 10:29 PM, Jerin Jacob wrote: > > Introducing the DEV_TX_OFFLOAD_MT_LOCKFREE TX capability flag. > > if a PMD advertises DEV_TX_OFFLOAD_MT_LOCKFREE capable, multiple threads > > can invoke rte_eth_tx_burst() concurrently on the same tx queue without > > SW lock. This PMD feature will be useful in the following use cases and > > found in the OCTEON family of NPUs. > > > > 1) Remove explicit spinlock in some applications where lcores > > to TX queues are not mapped 1:1. > > example: OVS has such instance > > https://github.com/openvswitch/ovs/blob/master/lib/netdev-dpdk.c#L299 > > https://github.com/openvswitch/ovs/blob/master/lib/netdev-dpdk.c#L1859 > > See the the usage of tx_lock spinlock. > > > > 2) In the eventdev use case, avoid dedicating a separate TX core for > > transmitting and thus enables more scaling as all workers can > > send the packets. > > > > Signed-off-by: Jerin Jacob <jerin.ja...@caviumnetworks.com> > > You may also like to add this capability in "doc/guides/nics/features/*.ini"
I've just added the feature "Lock-free Tx queue" in features/default.ini. > Acked-by: Hemant Agrawal <hemant.agra...@nxp.com> Applied, thanks
