linux/drivers/infiniband/sw/rdmavt/mad.c

// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
/*
 * Copyright(c) 2016 Intel Corporation.
 */

#include <rdma/ib_mad.h>
#include "mad.h"
#include "vt.h"

/**
 * rvt_process_mad - process an incoming MAD packet
 * @ibdev: the infiniband device this packet came in on
 * @mad_flags: MAD flags
 * @port_num: the port number this packet came in on, 1 based from ib core
 * @in_wc: the work completion entry for this packet
 * @in_grh: the global route header for this packet
 * @in: the incoming MAD
 * @in_mad_size: size of the incoming MAD reply
 * @out: any outgoing MAD reply
 * @out_mad_size: size of the outgoing MAD reply
 * @out_mad_pkey_index: unused
 *
 * Note that the verbs framework has already done the MAD sanity checks,
 * and hop count/pointer updating for IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE
 * MADs.
 *
 * This is called by the ib_mad module.
 *
 * Return: IB_MAD_RESULT_SUCCESS or error
 */
int rvt_process_mad(struct ib_device *ibdev, int mad_flags, u32 port_num,
		    const struct ib_wc *in_wc, const struct ib_grh *in_grh,
		    const struct ib_mad_hdr *in, size_t in_mad_size,
		    struct ib_mad_hdr *out, size_t *out_mad_size,
		    u16 *out_mad_pkey_index)
{ … }

static void rvt_send_mad_handler(struct ib_mad_agent *agent,
				 struct ib_mad_send_wc *mad_send_wc)
{ … }

/**
 * rvt_create_mad_agents - create mad agents
 * @rdi: rvt dev struct
 *
 * If driver needs to be notified of mad agent creation then call back
 *
 * Return 0 on success
 */
int rvt_create_mad_agents(struct rvt_dev_info *rdi)
{ … }

/**
 * rvt_free_mad_agents - free up mad agents
 * @rdi: rvt dev struct
 *
 * If driver needs notification of mad agent removal make the call back
 */
void rvt_free_mad_agents(struct rvt_dev_info *rdi)
{ … }