Class RdmaEndpoint

Class Documentation

class switchml::RdmaEndpoint

The RdmaEndpoint class contains all functions and configurations to setup the machine and the device/NIC.

It is mainly used by the RdmaConnection class.

Public Functions

RdmaEndpoint(std::string device_name, uint16_t device_port_id, uint16_t gid_index)

Initialize members and configure and open the ibverbs device port.

Parameters

  • device_name – The name of the Infiniband device to use.

  • device_port_id – The specific port to use from the device.

  • gid_index – The GID index to use.

~RdmaEndpoint()
RdmaEndpoint(RdmaEndpoint const&) = delete
void operator=(RdmaEndpoint const&) = delete
RdmaEndpoint(RdmaEndpoint&&) = default
RdmaEndpoint &operator=(RdmaEndpoint&&) = default
ibv_mr *AllocateAtAddress(void *requested_address, uint64_t size)

Allocates and registers a memory region at a specific address.

The call will fail if the allocation is not possible.

Parameters

  • requested_address – The memory address wanted.

  • size – The size of the region in bytes.

Returns

ibv_mr* A pointer to the allocated memory region struct.

void free(ibv_mr *mr)

Free a memory region that was allocated and registered.

Parameters

mr – The memory region to free.

ibv_cq *CreateCompletionQueue()

Create a Completion Queue.

Returns

ibv_cq* The created completion queue.

ibv_qp *CreateQueuePair(ibv_cq *completion_queue)

Create a Queue Pair.

Parameters

completion_queue – The completion queue to associate with this queue pair.

Returns

ibv_qp* The created queue pair.

uint64_t GetMac()

Get the MAC address corresponding to the chosen GID.

Returns

uint64_t The MAC address.

uint32_t GetIPv4()

Get the IPv4 address corresponding to the chosen GID.

Returns

uint32_t The IPv4 address

ibv_port_attr GetPortAttributes()
ibv_device *GetDevice()