Six new APIs have been added to the ixgbe PMD for MACsec offload support.
The declarations for the APIs can be found in ``rte_pmd_ixgbe.h``.
+* **virtio-user with vhost-kernel as another exceptional path.**
+
+ Previously, we upstreamed a virtual device, virtio-user with vhost-user
+ as the backend, as a way for IPC (Inter-Process Communication) and user
+ space container networking.
+
+ Virtio-user with vhost-kernel as the backend is a solution for exceptional
+ path, such as KNI, which exchanges packets with kernel networking stack.
+ This solution is very promising in:
+
+ * maintenance: vhost and vhost-net (kernel) is upstreamed and extensively
+ used kernel module.
+ * features: vhost-net is born to be a networking solution, which has
+ lots of networking related features, like multi-queue, TSO, multi-seg
+ mbuf, etc.
+ * performance: similar to KNI, this solution would use one or more
+ kthreads to send/receive packets from user space DPDK applications,
+ which has little impact on user space polling thread (except that
+ it might enter into kernel space to wake up those kthreads if
+ necessary).
+
Resolved Issues
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