Indicates the size of the shared memory region,Īnd the number, size and location of all theĭata structures, which can be accessed by mmapping the memory The string cannot exceed IFNAMSIZ characters, and YYY cannotīe the name of any existing OS network interface. The file descriptor is bound to port YYY of a VALE switch called XXX, The data path of the NIC is disconnected from the host stack,Īnd the file descriptor is bound to the NIC (one or all queues), Has multiple modes of operation controlled by the Ioctl(fd, NIOCREGIF, (struct nmreq *)arg) Ports and rings are created and controlled through a file descriptor,Īnd then bound to a specific port with an Simpler, higher level functions are described in section The following section describes the system calls to create In the rest of this (long) manual page we document Requires explicit support in device drivers. Synchronization and blocking I/O through a file descriptorĪre implemented by a single kernel module, which also emulates theĪPI over standard drivers for devices without native Virtual machines, NICs and the host stack. Providing high speed packet I/O between processes, Mode and send and receive raw packets through Userspace clients can dynamically switch NICs into With much less than one core on a 10 Gbit NIC, Reaching 14.88 million packets per second (Mpps) (sockets, bpf, tun/tap interfaces, native switches, pipes), Is a framework for extremely fast and efficient packet I/OĪ very fast and modular in-kernel software switch/dataplane,Ī shared memory packet transport channel.Īll these are accessed interchangeably with the same API.Īre at least one order of magnitude faster than
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