International Business Machines Corporation

Pedro V Torres

Omar Cardona

Rafael Velez

Andres Herrera

Louie Arthur Dickens

Julio Alejandro Maldonado

Michael P Vageline

Jeffrey Paul Messing

Francisco Jesus Alanis

Rodolfo Lopez

Juan G Rivera

Carol L Soto Gonzalez

Venkat Venkatsubra

Kyle R Moser

Amit Agarwal

Xiaohan Qin

Xinya Wang

Srikanth Subramanian

A return address of a caller of a software function within an access control component is determined, the caller comprising a software component seeking access to a protected resource protected by the access control component. From the return address, a filename of the caller is determined. Responsive to determining that the filename is included in a set of filenames of components allowed to access the protected resource, the caller is allowed to access the protected resource.

Secure data storage device access control and sharing

Systems and computer program products to perform an operation comprising receiving an indication of a type and a target of a fault to inject in a network, the network comprising a plurality of devices and a plurality of network elements, generating at least a first predicted network map depicting a predicted configuration of the plurality of devices and network elements subsequent to injecting the fault in the network, injecting the fault at the target in the network, generating an actual network map depicting an actual configuration of the plurality of devices and network elements, identifying, based on a comparison of the first predicted network map and the actual network map, at least one difference in the predicted and actual configurations, and outputting for display an indication of the identified at least one difference.

Testing and delivering verification of network configurations

Methods to perform an operation comprising receiving an indication of a type and a target of a fault to inject in a network, the network comprising a plurality of devices and a plurality of network elements, generating at least a first predicted network map depicting a predicted configuration of the plurality of devices and network elements subsequent to injecting the fault in the network, injecting the fault at the target in the network, generating an actual network map depicting an actual configuration of the plurality of devices and network elements, identifying, based on a comparison of the first predicted network map and the actual network map, at least one difference in the predicted and actual configurations, and outputting for display an indication of the identified at least one difference.

Processing data packets from a receive queue is provided. It is determined whether packets are saved in a pre-fetched queue. In response to determining that packets are not saved in the pre-fetched queue, a number of packets within the receive queue is determined. In response to determining the number of packets within the receive queue, it is determined whether the number of packets within the receive queue is greater than a number of packets called for by an application. In response to determining that the number of packets within the receive queue is greater than the number of packets called for by the application, an excess number of packets that is above the number of packets called for by the application is saved in the pre-fetched queue. An indication is sent to the application of the excess number of packets. The predetermined number of packets is transferred to the application.

Processing data packets from a receive queue in a remote direct memory access device

A mechanism is provided in a data processing system for shared buffer affinity for multiple ports. The mechanism configures a physical first-in-first-out (FIFO) buffer with a plurality of FIFO segments associated with a plurality of network ports. The plurality of network ports share the physical FIFO buffer. The mechanism identifies a FIFO segment under stress within the plurality of FIFO segments. The mechanism reconfigures the physical FIFO buffer to assign a portion of buffer space from a FIFO segment not under stress within the plurality of FIFO segments to the FIFO segment under stress.

FIFO affinity for multiple ports

Mechanisms are provided, in a data processing system, for generating a snapshot of a remote direct memory access (RDMA) resource. The mechanisms receive, from an Input/Output (IO) adapter associated with the data processing system, an error event notification and store, in response to the error event notification, a snapshot of a RDMA resource associated with the error event notification. The mechanisms tear down the RDMA resource in response to the error even notification and free memory associated with the RDMA resource in response to tearing down the RDMA resource. The snapshot stores contents of the RDMA resource.

Event driven remote direct memory access snapshots

Mechanisms are provided for remote direct memory access (RDMA) resource leak detection. A user space context is generated comprising a user space RDMA resource hierarchical data structure. A kernel context is generated comprising a kernel RDMA resource hierarchical data structure. The kernel RDMA resource hierarchical data structure comprises nodes of the users space RDMA resource hierarchical data structure. A request to close a RDMA resource is received and the user space RDMA resource hierarchical data structure is traversed to determine whether the RDMA resource has child RDMA resources allocated in the user space RDMA resource hierarchical data structure. A resource leak is detected in response to determining, based on at least one of the user space RDMA resource hierarchical data structure or the kernel RDMA resource hierarchical data structure, that the RDMA resource has a child RDMA resource allocated in the user space RDMA resource hierarchical data structure.

RDMA resource leakage detection and reporting

A network system employs path health information to select an acceptable path between a source node and destination node within an information handling system (IHS) and/or between a source node within one IHS and a destination node within another IHS. One or more switches may connect these two IHSs together. The network system accesses the path health information to determine the availability of paths for communicating between nodes.

Growing community of inventors

Pflugerville, TX, United States of America

Pedro V Torres