Function iflib_irq_alloc_generic

freebsd/net/iflib.c:6086–6172

}

int
iflib_irq_alloc_generic(if_ctx_t ctx, if_irq_t irq, int rid,
			iflib_intr_type_t type, driver_filter_t *filter,
			void *filter_arg, int qid, const char *name)
{
	device_t dev;
	struct grouptask *gtask;
	struct taskqgroup *tqg;
	iflib_filter_info_t info;
	gtask_fn_t *fn;
	int tqrid, err;
	driver_filter_t *intr_fast;
	void *q;

	info = &ctx->ifc_filter_info;
	tqrid = rid;

	switch (type) {
	/* XXX merge tx/rx for netmap? */
	case IFLIB_INTR_TX:
		q = &ctx->ifc_txqs[qid];
		info = &ctx->ifc_txqs[qid].ift_filter_info;
		gtask = &ctx->ifc_txqs[qid].ift_task;
		tqg = qgroup_if_io_tqg;
		fn = _task_fn_tx;
		intr_fast = iflib_fast_intr;
		GROUPTASK_INIT(gtask, 0, fn, q);
		ctx->ifc_flags |= IFC_NETMAP_TX_IRQ;
		break;
	case IFLIB_INTR_RX:
		q = &ctx->ifc_rxqs[qid];
		info = &ctx->ifc_rxqs[qid].ifr_filter_info;
		gtask = &ctx->ifc_rxqs[qid].ifr_task;
		tqg = qgroup_if_io_tqg;
		fn = _task_fn_rx;
		intr_fast = iflib_fast_intr;
		NET_GROUPTASK_INIT(gtask, 0, fn, q);
		break;
	case IFLIB_INTR_RXTX:
		q = &ctx->ifc_rxqs[qid];
		info = &ctx->ifc_rxqs[qid].ifr_filter_info;
		gtask = &ctx->ifc_rxqs[qid].ifr_task;
		tqg = qgroup_if_io_tqg;
		fn = _task_fn_rx;
		intr_fast = iflib_fast_intr_rxtx;
		NET_GROUPTASK_INIT(gtask, 0, fn, q);
		break;
	case IFLIB_INTR_ADMIN:
		q = ctx;
		tqrid = -1;
		info = &ctx->ifc_filter_info;
		gtask = &ctx->ifc_admin_task;
		tqg = qgroup_if_config_tqg;
		fn = _task_fn_admin;
		intr_fast = iflib_fast_intr_ctx;
		break;
	default:
		device_printf(ctx->ifc_dev, "%s: unknown net intr type\n",