公开(公告)号：WO2007091034B1

公开(公告)日：2007-09-27

申请号：PCT/GB2007000391

申请日：2007-02-06

Applicant: LEVEL 5 NETWORKS INC ,  RIDDOCH DAVID J ,  PORTER MARTIN W ,  POPE STEVEN L

Inventor： RIDDOCH DAVID J ,  PORTER MARTIN W ,  POPE STEVEN L

IPC: H04L12/18 ,  H04L12/56

CPC classification number: H04L12/18 ,  H04L49/90

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.

Abstract translation: 粗略描述，传入数据分组由NIC直接传递到至少两个用户级端点。 在一方面，仅在NIC中创建不能模糊的过滤器。 另一方面，NIC维护一个过滤表，该过滤表支持将一个单播和多播数据包直接传送到一个用户级端点。 加入同一组播组的其他请求会导致内核中的NIC过滤器的更换。 另一方面，NIC具有维持多播组成员身份的能力有限。 响应于新的多播过滤器请求，内核仅在NIC仍然具有足够的容量时才在NIC中建立它; 否则它在内核中建立。

公开(公告)号：WO2007091034A1

公开(公告)日：2007-08-16

申请号：PCT/GB2007/000391

申请日：2007-02-06

Applicant: LEVEL 5 NETWORKS, INC. ,  RIDDOCH, David, J. ,  PORTER, Martin, W. ,  POPE, Steven, L.

Inventor： RIDDOCH, David, J. ,  PORTER, Martin, W. ,  POPE, Steven, L.

IPC: H04L12/18 ,  H04L12/56

CPC classification number: H04L12/18 ,  H04L49/90

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.

Abstract translation: 大致描述，传入的数据包由NIC直接传送到至少两个用户级端点。 在一个方面，在NIC中仅创建不可模糊的过滤器。 在另一方面，NIC维护支持将传入的单播和多播数据分组直接递送到一个用户级端点的过滤器表。 其他请求加入相同的多播组导致用内核中的一个替换NIC滤波器。 另一方面，NIC具有维持多播组成员资格的能力有限。 为了响应新的多点传送过滤器请求，内核只有在NIC仍有足够容量的情况下才在NIC中建立它; 否则它在内核中建立。

公开(公告)号：WO2006138649A1

公开(公告)日：2006-12-28

申请号：PCT/US2006/023624

申请日：2006-06-16

Applicant: LEVEL 5 NETWORKS, INC. ,  POPE, Steve, L. ,  ROBERTS, Derek ,  RIDDOCH, David, J. ,  YU, Ching ,  CHIANG, John, Mingyung ,  CHU, Der-ren

Inventor： POPE, Steve, L. ,  ROBERTS, Derek ,  RIDDOCH, David, J. ,  YU, Ching ,  CHIANG, John, Mingyung ,  CHU, Der-ren

IPC: G06F13/28 ,  G06F13/38

CPC classification number: H04L49/901 ,  G06F13/28 ,  G06F13/385 ,  H04L49/90

Abstract: Method and apparatus for retrieving buffer descriptors from a host memory for use by a peripheral device. In an embodiment, a peripheral device such as a NIC includes a plurality of buffer descriptor caches each corresponding to a respective one of a plurality of host memory descriptor queues, and a plurality of queue descriptors each corresponding to a respective one of the host memory descriptor queues. Each of the queue descriptors includes a host memory read address pointer for the corresponding descriptor queue, and this same read pointer is used to derive algorithmically the descriptor cache write addresses at which to write buffer descriptors retrieved from the corresponding host memory descriptor queue.

Abstract translation: 用于从主机存储器检索缓冲器描述符以供外围设备使用的方法和装置。 在一个实施例中，诸如NIC的外围设备包括多个缓冲区描述符缓存，每个对应于多个主机存储器描述符队列中的相应一个的多个缓冲区描述符缓存，以及多个队列描述符，每个对应于主机存储器描述符 队列。 每个队列描述符包括用于对应的描述符队列的主机存储器读地址指针，并且该相同的读指针用于从算法上导出描述符高速缓存写地址，在该地址处写入从相应主机存储器描述符队列检索的缓冲器描述符。

公开(公告)号：WO2008053153A3

公开(公告)日：2008-11-27

申请号：PCT/GB2007003994

申请日：2007-10-18

Applicant: SOLARFLARE COMM INC ,  POPE STEVE ,  RIDDOCH DAVID J

Inventor： POPE STEVE ,  RIDDOCH DAVID J

IPC: H04L29/06

CPC classification number: H04L69/22 ,  H04L69/16 ,  H04L69/161 ,  H04L69/166

Abstract: A method for performing segmentation of a first data packet into a plurality of second data packets at a functionality of a device driver for a network interface device supported by a data processing system, each second data packet comprising a header and a segment of data from the first data packet and the network interface device being capable of supporting a communication link over a network with another network interface device, the method comprising: accepting the first data packet, the first data packet carrying data for transmission by the network interface device over the network; forming a set of headers for the plurality of second data packets; writing the set of headers to memory; forming a specification, the specification indicating the headers in memory and the segments of data in the first data packet; requesting by means of the device driver transmission by the network interface device of the headers and the respective segments of data indicated in the specification so as to effect transmission of the second data packets over the network.

Abstract translation: 一种用于在由数据处理系统支持的网络接口设备的设备驱动程序的功能上执行将第一数据分组划分为多个第二数据分组的方法，每个第二数据分组包括报头和来自所述数据分组的数据段 所述第一数据分组和所述网络接口设备能够通过网络与另一网络接口设备一起支持通信链路，所述方法包括：接收所述第一数据分组，所述第一数据分组承载数据以供网络接口设备通过所述网络传输 ; 形成用于所述多个第二数据分组的一组报头; 将集合的头写入内存; 形成规范，指示存储器中的报头的规范和第一数据分组中的数据段; 通过由网络接口​​设备发送的设备驱动程序发送标题和规范中指示的各个数据段，以便通过网络实现第二数据分组的传输。

公开(公告)号：WO2008053153A2

公开(公告)日：2008-05-08

申请号：PCT/GB2007/003994

申请日：2007-10-18

Applicant: LEVEL 5 NETWORKS, INC. ,  POPE, Steve ,  RIDDOCH, David, J.

Inventor： POPE, Steve ,  RIDDOCH, David, J.

CPC classification number: H04L69/22 ,  H04L69/16 ,  H04L69/161 ,  H04L69/166

Abstract: A method for performing segmentation of a first data packet into a plurality of second data packets at a functionality of a device driver for a network interface device supported by a data processing system, each second data packet comprising a header and a segment of data from the first data packet and the network interface device being capable of supporting a communication link over a network with another network interface device, the method comprising: accepting the first data packet, the first data packet carrying data for transmission by the network interface device over the network; forming a set of headers for the plurality of second data packets; writing the set of headers to memory; forming a specification, the specification indicating the headers in memory and the segments of data in the first data packet; requesting by means of the device driver transmission by the network interface device of the headers and the respective segments of data indicated in the specification so as to effect transmission of the second data packets over the network.

Abstract translation: 一种用于在由数据处理系统支持的网络接口设备的设备驱动程序的功能上执行将第一数据分组划分为多个第二数据分组的方法，每个第二数据分组包括报头和来自所述数据分组的数据段 所述第一数据分组和所述网络接口设备能够通过网络与另一网络接口设备一起支持通信链路，所述方法包括：接收所述第一数据分组，所述第一数据分组承载数据以供网络接口设备通过所述网络传输 ; 形成用于所述多个第二数据分组的一组报头; 将集合的头写入内存; 形成规范，指示存储器中的报头的规范和第一数据分组中的数据段; 通过由网络接口​​设备发送的设备驱动程序发送标题和规范中指示的各个数据段，以便通过网络实现第二数据分组的传输。

公开(公告)号：WO2007045839A2

公开(公告)日：2007-04-26

申请号：PCT/GB2006/003828

申请日：2006-10-13

Applicant: LEVEL 5 NETWORKS, INC. ,  POPE, Steve, L. ,  ROBERTS, Derek ,  RIDDOCH, David, J. ,  YU, Ching ,  CHIANG, John, Mingyung ,  CHU, Der-Ren

Inventor： POPE, Steve, L. ,  ROBERTS, Derek ,  RIDDOCH, David, J. ,  YU, Ching ,  CHIANG, John, Mingyung ,  CHU, Der-Ren

IPC: H04L29/06 ,  H04L12/56

CPC classification number: G06F17/30867 ,  G06F17/30864 ,  H04L45/742 ,  H04L45/745 ,  H04L47/2441 ,  H04L47/621 ,  H04L49/90 ,  H04L67/10 ,  H04L69/16 ,  H04L69/161 ,  H04L69/162 ,  H04L69/163 ,  H04L69/164 ,  H04L69/22 ,  Y10S707/922

Abstract: Roughly described, a network interface device is assigned a maximum extent-of-search. A hash function is applied to the header information of each incoming packet, to generate a hash code for the packet. The hash code designates a particular subset of the table within which the particular header information should be found, and an iterative search is made within that subset. If the search locates a matching entry before the search limit is exceeded, then the incoming data packet is delivered to the receive queue identified in the matching entry. But if the search reaches the search limit before a matching entry is located, then device delivers the packet to a default queue, such as a kernel queue, in the host computer system. The kernel is then responsible for delivering the packet to the correct endpoint.

Abstract translation: 大致描述了网络接口设备被分配最大的搜索范围。 散列函数被应用于每个输入分组的报头信息，以产生分组的哈希码。 哈希代码指定在其中应当找到特定头部信息的表的特定子集，并且在该子集内进行迭代搜索。 如果搜索在超出搜索限制之前找到匹配的条目，则传入数据包将被传递到匹配条目中标识的接收队列。 但是，如果在找到匹配的条目之前搜索达到搜索限制，则设备会将数据包传递到主机系统中的默认队列（如内核队列）。 然后，内核负责将数据包传递到正确的端点。

公开(公告)号：WO2007045839A3

公开(公告)日：2007-11-01

申请号：PCT/GB2006003828

申请日：2006-10-13

Applicant: LEVEL 5 NETWORKS INC ,  POPE STEVE L ,  ROBERTS DEREK ,  RIDDOCH DAVID J ,  YU CHING ,  CHIANG JOHN MINGYUNG ,  CHU DER-REN

Inventor： POPE STEVE L ,  ROBERTS DEREK ,  RIDDOCH DAVID J ,  YU CHING ,  CHIANG JOHN MINGYUNG ,  CHU DER-REN

IPC: H04L29/06 ,  H04L12/56

CPC classification number: G06F17/30867 ,  G06F17/30864 ,  H04L45/742 ,  H04L45/745 ,  H04L47/2441 ,  H04L47/621 ,  H04L49/90 ,  H04L67/10 ,  H04L69/16 ,  H04L69/161 ,  H04L69/162 ,  H04L69/163 ,  H04L69/164 ,  H04L69/22 ,  Y10S707/922

Abstract: Roughly described, a network interface device is assigned a maximum extent-of-search. A hash function is applied to the header information of each incoming packet, to generate a hash code for the packet. The hash code designates a particular subset of the table within which the particular header information should be found, and an iterative search is made within that subset. If the search locates a matching entry before the search limit is exceeded, then the incoming data packet is delivered to the receive queue identified in the matching entry. But if the search reaches the search limit before a matching entry is located, then device delivers the packet to a default queue, such as a kernel queue, in the host computer system. The kernel is then responsible for delivering the packet to the correct endpoint.

Abstract translation: 大致描述了网络接口设备被分配最大的搜索范围。 散列函数被应用于每个输入分组的报头信息，以产生分组的哈希码。 哈希代码指定在其中应当找到特定头部信息的表的特定子集，并且在该子集内进行迭代搜索。 如果搜索在超出搜索限制之前找到匹配的条目，则传入数据包将被传递到匹配条目中标识的接收队列。 但是，如果在找到匹配的条目之前搜索达到搜索限制，则设备会将数据包传递到主机系统中的默认队列（如内核队列）。 然后，内核负责将数据包传递到正确的端点。