Abstract: Methods and systems are disclosed for network congestion management. The methods and systems receive a first packet complying with a first network protocol comprising a first congestion indicator representative of a presence or absence of network congestion and further comprising a first set of data associated with a second network protocol, and provide an indication of the presence or absence of network congestion generated based, at least in part, on the first congestion indicator. The methods and systems also receive a first packet complying with a first network protocol comprising a first set of data associated with a second network protocol, and output a second packet complying with the first network protocol comprising a first congestion indicator representative of a presence of network congestion.

Abstract: A method for data transfer includes receiving in an input/output (I/O) operation data to be written to a specified virtual address in a host memory. Upon receiving the data, it is detected that a first page that contains the specified virtual address is swapped out of the host memory. Responsively to detecting that the first page is swapped out, the received data are written to a second, free page in the host memory, and the specified virtual address is remapped to the free page.

Abstract: A method for memory access includes maintaining in a host memory, under control of a host operating system running on a central processing unit (CPU), respective address translation tables for multiple processes executed by the CPU. Upon receiving, in a peripheral device, a work item that is associated with a given process, having a respective address translation table in the host memory, and specifies a virtual memory address, the peripheral device translates the virtual memory address into a physical memory address by accessing the respective address translation table of the given process in the host memory. The work item is executed in the peripheral device by accessing data at the physical memory address in the host memory.

Abstract: A method for data transfer includes receiving in an operating system of a host computer an instruction initiated by a user application running on the host processor identifying a page of virtual memory of the host computer that is to be used in receiving data in a message that is to be transmitted over a network to the host computer but has not yet been received by the host computer. In response to the instruction, the page is loaded into the memory, and upon receiving the message, the data are written to the loaded page.

Abstract: A method for data transfer includes receiving in an input/output (I/O) operation a first segment of data to be written to a specified virtual address in a host memory. Upon receiving the first segment of the data, it is detected that a first page that contains the specified virtual address is swapped out of the host memory. At least one second page of the host memory is identified, to which a second segment of the data is expected to be written. Responsively to detecting that the first page is swapped out and to identifying the at least one second page, at least the first and second pages are swapped into the host memory. After swapping at least the first and second pages into the host memory, the data are written to the first and second pages.

Abstract: A method for data transfer includes receiving in an input/output (I/O) operation data to be written to a specified virtual address in a host memory. Upon receiving the data, it is detected that a first page that contains the specified virtual address is swapped out of the host memory. Responsively to detecting that the first page is swapped out, the received data are written to a second, free page in the host memory, and the specified virtual address is remapped to the free page.

Abstract: A method includes defining a first mapping, which translates between logical addresses and physical storage locations in a memory with a first mapping unit size, for accessing the memory by a first processing unit. A second mapping is defined, which translates between the logical addresses and the physical storage locations with a second mapping unit size that is different from the first mapping unit size, for accessing the memory by a second processing unit. Data is exchanged between the first and second processing units via the memory, while accessing the memory by the first processing unit using the first mapping and by the second processing unit using the second mapping.