/** * 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, conststruct ib_wc *in_wc, conststruct ib_grh *in_grh, conststruct ib_mad_hdr *in, size_t in_mad_size, struct ib_mad_hdr *out, size_t *out_mad_size,
u16 *out_mad_pkey_index)
{ /* * MAD processing is quite different between hfi1 and qib. Therefore * this is expected to be provided by the driver. Other drivers in the * future may choose to implement this but it should not be made into a * requirement.
*/ return IB_MAD_RESULT_FAILURE;
}
/** * 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)
{ struct ib_mad_agent *agent; struct rvt_ibport *rvp; int p; int ret;
for (p = 0; p < rdi->dparms.nports; p++) {
rvp = rdi->ports[p];
agent = ib_register_mad_agent(&rdi->ibdev, p + 1,
IB_QPT_SMI,
NULL, 0, rvt_send_mad_handler,
NULL, NULL, 0); if (IS_ERR(agent)) {
ret = PTR_ERR(agent); goto err;
}
rvp->send_agent = agent;
if (rdi->driver_f.notify_create_mad_agent)
rdi->driver_f.notify_create_mad_agent(rdi, p);
}
return 0;
err: for (p = 0; p < rdi->dparms.nports; p++) {
rvp = rdi->ports[p]; if (rvp->send_agent) {
agent = rvp->send_agent;
rvp->send_agent = NULL;
ib_unregister_mad_agent(agent); if (rdi->driver_f.notify_free_mad_agent)
rdi->driver_f.notify_free_mad_agent(rdi, p);
}
}
return ret;
}
/** * 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)
{ struct ib_mad_agent *agent; struct rvt_ibport *rvp; int p;
for (p = 0; p < rdi->dparms.nports; p++) {
rvp = rdi->ports[p]; if (rvp->send_agent) {
agent = rvp->send_agent;
rvp->send_agent = NULL;
ib_unregister_mad_agent(agent);
} if (rvp->sm_ah) {
rdma_destroy_ah(&rvp->sm_ah->ibah,
RDMA_DESTROY_AH_SLEEPABLE);
rvp->sm_ah = NULL;
}
if (rdi->driver_f.notify_free_mad_agent)
rdi->driver_f.notify_free_mad_agent(rdi, p);
}
}
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