drivers/infiniband/sw/rdmavt/mad.c

Source file repositories/reference/linux-study-clean/drivers/infiniband/sw/rdmavt/mad.c

File Facts

System
Linux kernel
Corpus path
drivers/infiniband/sw/rdmavt/mad.c
Extension
.c
Size
3302 bytes
Lines
131
Domain
Driver Families
Bucket
drivers/infiniband
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

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);
	}
}

Annotation

Implementation Notes