Patents by Inventor Martin W. Porter

Martin W. Porter has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method and apparatus for multicast packet reception
    Patent number: 8817784
    Abstract: Roughly described, incoming data packets are delivered by the NIC directly to at least two user level endpoints. In an aspect, only filters that cannot be ambiguous are created in the NIC. In another aspect, the NIC maintains a filter table supporting direct delivery of incoming unicast and multicast data packets to one user level endpoint. Additional requests to join the same multicast group cause replacement of the NIC filter with one in the kernel. In another aspect, a NIC has limited capacity to maintain multicast group memberships. In response to a new multicast filter request, the kernel establishes it in the NIC only if the NIC still has sufficient capacity; otherwise it is established in the kernel.
    Type: Grant
    Filed: January 10, 2012
    Date of Patent: August 26, 2014
    Assignee: Solarflare Communications, Inc.
    Inventors: David J. Riddoch, Martin W. Porter, Steven L. Pope
  • METHOD AND APPARATUS FOR MULTICAST PACKET RECEPTION
    Publication number: 20120113987
    Abstract: Roughly described, incoming data packets are delivered by the NIC directly to at least two user level endpoints. In an aspect, only filters that cannot be ambiguous are created in the NIC. In another aspect, the NIC maintains a filter table supporting direct delivery of incoming unicast and multicast data packets to one user level endpoint. Additional requests to join the same multicast group cause replacement of the NIC filter with one in the kernel. In another aspect, a NIC has limited capacity to maintain multicast group memberships. In response to a new multicast filter request, the kernel establishes it in the NIC only if the NIC still has sufficient capacity; otherwise it is established in the kernel.
    Type: Application
    Filed: January 10, 2012
    Publication date: May 10, 2012
    Applicant: SOLARFLARE COMMUNICATIONS, INC.
    Inventors: David J. Riddoch, Martin W. Porter, Steven L. Pope
  • Method and apparatus for multicast packet reception
    Patent number: 8116312
    Abstract: Roughly described, incoming data packets are delivered by the NIC directly to at least two user level endpoints. In an aspect, only filters that cannot be ambiguous are created in the NIC. In another aspect, the NIC maintains a filter table supporting direct delivery of incoming unicast and multicast data packets to one user level endpoint. Additional requests to join the same multicast group cause replacement of the NIC filter with one in the kernel. In another aspect, a NIC has limited capacity to maintain multicast group memberships. In response to a new multicast filter request, the kernel establishes it in the NIC only if the NIC still has sufficient capacity; otherwise it is established in the kernel.
    Type: Grant
    Filed: February 8, 2006
    Date of Patent: February 14, 2012
    Assignee: Solarflare Communications, Inc.
    Inventors: David J. Riddoch, Martin W. Porter, Steven L. Pope