摘要:
A method for configuring a packet destination, that includes creating the packet destination on a host, obtaining a network configuration for the packet destination, determining whether the host comprises a virtual network stack, where the virtual network stack includes the network configuration, and assigning the packet destination to the virtual network stack.
摘要:
A method for notifying a packet destination that includes receiving a packet by a network interface card (NIC), where the packet destination is a destination of the packet, classifying the packet, forwarding the packet to one of a plurality of receive rings on the NIC, determining whether the one of the plurality of receive rings comprises space to store the packet, dropping the packet if the receive ring does not comprise the space to store the packet, and sending a notification message to the packet destination, where the notification message indicates that the packet was dropped by the receive ring.
摘要:
A computer readable medium comprising software instructions for: obtaining an allocation policy by a MAC layer executing on a host; receiving, a request for a transmit kernel buffer (TxKB) by a sending application executing on at least one processor of the host; obtaining a location of a plurality of available TxKBs on the host; obtaining a location of at least one available network interface on the host; obtaining a location of the sending application; allocating one of the plurality of available TxKBs to obtain an allocated TxKB, wherein the one of the plurality of available TxKBs is selected according to the allocation policy using the location of the plurality of available TxKB, the location of the at least one available network interface, and the location of the sending application, to obtain an allocated TxKB; and providing, to the sending application, the location of the allocated TxKB.
摘要:
A method for controlling a denial of service attack involves receiving a plurality of packets from a network, identifying an attacking host based on a severity level of the denial of service attack from the network, wherein the attacking host is identified by an identifying attack characteristic associated with one of the plurality of packets associated with the attacking host, analyzing each of the plurality of packets by a classifier to determine to which of a plurality of temporary data structures each of the plurality of packet is forwarded, forwarding each of the plurality of packets associated with the identifying attack characteristic to one of the plurality of temporary data structures matching the severity level of the denial of service attack as determined by the classifier, requesting a number of packets from the one of the plurality of temporary data structures matching the severity level by the virtual serialization queue, and forwarding the number of packets to the virtual serialization queue.
摘要:
In general, the invention relates to a creating a network model on a host. The invention includes: gathering first component properties associated with a first physical network device on a target network; creating a first container using first component properties; determining that a second physical network device is operatively connected to the first physical network device via a physical network link; gathering second component properties associated with the physical network link; creating a first VNIC associated with the first container; determining that at least one virtual network device is executing on the second physical network device; gathering third component properties associated with the at least one virtual network device; creating a second container, wherein the second container is configured using the third component properties; and creating a second VNIC associated with the second container.
摘要:
A system including first and second virtualized execution environments and a hypervisor for sending packets between virtualized execution environments. The first virtualized execution environment includes a first VNIC associated with a first hardware address (HA), a first proxy VNIC associated with a second HA, and a virtual switch. A Vswitch table for the virtual switch includes entries associating the first HA with the first VNIC and the second HA with the first proxy VNIC. The second virtualized execution environment includes a second proxy VNIC associated with the first HA. The virtual switch receives a first packet associated with the second HA. The virtual switch sends the first packet to the first proxy VNIC when Vswitch table entry associates the second HA with the first proxy VNIC. The first VNIC proxy sends the first packet from the first virtualized execution environment to the second virtualized execution environment using the hypervisor.
摘要:
A computer readable medium comprising software instructions for managing resources on a host, wherein the software instructions comprise functionality to: configure a classifier located on a NIC, to forward packets addressed to a first destination address to a first HRR mapped to a first VNIC, wherein packets addressed to the first destination address are associated with a first PFC lane; configure the classifier to forward packets addressed to a second destination address to a second HRR, wherein packets addressed to the second destination address are associated with a second PFC lane; and transmit, by the first VNIC, a pause frame associated with the first PFC lane to a switch operatively connected to the physical NIC, wherein the switch, in response to receiving the pause frame, stores packets associated with the first PFC lane in a buffer without transmitting the packets.
摘要:
In general, the invention relates to a method for monitoring virtual wires. The method includes selecting a first virtual wire to monitor, wherein the first virtual wire connects a first virtual network interface card (VNIC) located on a first computer to a second VNIC located on a second computer, where the first computer and the second computer are connected to a chassis, and where the first virtual wire is implemented by the chassis. The method further includes collecting usage statistics associated with the first virtual wire, and performing a first action using the collected usage statistics associated with the first virtual wire.
摘要:
A method for processing packets. The method includes receiving a first packet, wherein the first packet is associated with a first protocol, classifying the first packet using a protocol associated with the first packet, sending the first packet to a first receive ring based on the classification, sending the first packet from the first receive ring to a first virtual network interface card (VNIC) based on an operating mode, sending the first packet from the first VNIC to a first protocol specific virtual network stack (VNS), wherein the first protocol specific VNS is configured to only process packets associated with the first protocol, and processing the first packet by the first protocol specific VNS to obtain a first processed packet.
摘要:
The invention relates to a method for processing a packet. The method includes receiving the packet by a physical network interface, determining a target virtual network interface card (VNIC) using the destination address and a virtual switching table (VST), transferring the packet to a receive ring (RR) associated with the target VNIC, wherein the RR is located on the NEM, determining, by the target VNIC, that the packet is in the RR, determining, by the target VNIC, that the packet is to be processed using an offload engine, transferring the packet to offload memory located on an offload computer, wherein the offload computer is operatively connected to the NEM via the chassis interconnect and wherein the offload engine is executing on the offload computer, processing the packet by the offload engine to obtain a processed packet, and transferring the processed packet to a target computer memory using the chassis interconnect.