Patent application number | Description | Published |
20080256180 | USE OF HARDWARE TO MANAGE DEPENDENCIES BETWEEN GROUPS OF NETWORK DATA PACKETS - A task obtained by a communications processor is decomposed into one or more requests that form a request group. The requests of the request group are sent to main memory and responses to those requests are expected. There may be requests for a plurality of request groups being processed concurrently. However, responses to the request groups are to be returned to the communications processor in the order in which the request groups were sent from the communications processor. To ensure this ordering, dependencies between the request groups are tracked by hardware coupled to the communications processor. | 10-16-2008 |
20100008251 | EFFICIENT PROBABILISTIC DUPLICATE PACKET DETECTOR IN COMPUTER NETWORKS - In order to solve the problem of the detection of the arrival of duplicate data packets in an interconnected, multinode data processing system, each data packet is provided with a field of r bits that are randomly generated for each data packet. However, one of the packets is provided with a field that is computed from the other randomly generated field entries in a checksum computation which yields a selected nonzero checksum value. A running checksum at the receiver is used to determine whether or not, after the receipt of the specified number, k, of data packets, a duplicate packet has been received. | 01-14-2010 |
20100179989 | USE OF HARDWARE TO MANAGE DEPENDENCIES BETWEEN GROUPS OF NETWORK DATA PACKETS - A task obtained by a communications processor is decomposed into one or more requests that form a request group. The requests of the request group are sent to main memory and responses to those requests are expected. There may be requests for a plurality of request groups being processed concurrently. However, responses to the request groups are to be returned to the communications processor in the order in which the request groups were sent from the communications processor. To ensure this ordering, dependencies between the request groups are tracked by hardware coupled to the communications processor. | 07-15-2010 |
20120304040 | CHECKSUM CALCULATION, PREDICTION AND VALIDATION - A checksum calculation, prediction and validation system includes a host system, a network interface, a reception pipeline disposed between the host system and network interface and configured to calculate an expected full checksum related to packets received in the host system and a transmission pipeline disposed between the host system and network interface and configured calculate factors related to packets for transmission on the network interface. | 11-29-2012 |
20120311110 | RE-PROGRAMMING PROGRAMMABLE HARDWARE DEVICES WITHOUT SYSTEM DOWNTIME - Programmable hardware devices are re-programmed without system downtime. To re-program the device, the device is quiesced, state associated with the device is saved, updates are loaded, the state is restored and operations are resumed, all transparent to the system, except for a possible delay in the system. | 12-06-2012 |
20120311112 | RE-PROGRAMMING PROGRAMMABLE HARDWARE DEVICES WITHOUT SYSTEM DOWNTIME - Programmable hardware devices are re-programmed without system downtime. To re-program the device, the device is quiesced, state associated with the device is saved, updates are loaded, the state is restored and operations are resumed, all transparent to the system, except for a possible delay in the system. | 12-06-2012 |
20120311199 | FIBRE CHANNEL INPUT/OUTPUT DATA ROUTING INCLUDING DISCARDING OF DATA TRANSFER REQUESTS IN RESPONSE TO ERROR DETECTION - A computer program product is provided for performing input/output (I/O) processing. The computer program product is configured to perform: generating and storing in local channel memory at least one address control word (ACW) specifying one or more host memory locations for data transfer and including a data discard field; generating an address control structure specifying a local channel memory location of a corresponding ACW; receiving one or more data transfer requests from a network interface that each corresponding address control structure information; accessing an ACW and routing the data transfer request to a host memory location specified in the ACW; and responsive to encountering an error during at least one of the accessing and the routing, discarding the one or more data transfer requests and setting the data discard field to a value configured to instruct a channel to discard any subsequent data transfer requests associated with the ACW. | 12-06-2012 |
20120311212 | AVOIDING NON-POSTED REQUEST DEADLOCKS IN DEVICES - Processing within a device is controlled in order to avoid a deadlock situation. A local request engine of the device determines prior to making a request whether the port of the device that is to service the request is making forward progress in processing other requests. If forward progress is being made, then the request is forwarded to the port. Otherwise, the request is held. This avoids a deadlock situation and allows the device to remain operative even in partial recovery situations. | 12-06-2012 |
20120311213 | AVOIDING NON-POSTED REQUEST DEADLOCKS IN DEVICES - Processing within a device is controlled in order to avoid a deadlock situation. A local request engine of the device determines prior to making a request whether the port of the device that is to service the request is making forward progress in processing other requests. If forward progress is being made, then the request is forwarded to the port. Otherwise, the request is held. This avoids a deadlock situation and allows the device to remain operative even in partial recovery situations. | 12-06-2012 |
20130042168 | CHECKSUM CALCULATION, PREDICTION AND VALIDATION - A calculation, prediction and validation method can include receiving a portion of a data packet in a data buffer, computing, in a processor, information related to the checksum of the data packet based on the portion of the data packet and processing the data packet in the processor. | 02-14-2013 |
20140047307 | CHECKSUM CALCULATION, PREDICTION AND VALIDATION - A calculation, prediction and validation method can include receiving a portion of a data packet in a data buffer, computing, in a processor, information related to the checksum of the data packet based on the portion of the data packet and processing the data packet in the processor. | 02-13-2014 |