Function iflib_device_register

freebsd/net/iflib.c:4710–4953

}

int
iflib_device_register(device_t dev, void *sc, if_shared_ctx_t sctx, if_ctx_t *ctxp)
{
	if_ctx_t ctx;
	if_t ifp;
	if_softc_ctx_t scctx;
	kobjop_desc_t kobj_desc;
	kobj_method_t *kobj_method;
	int err, msix, rid;
	int num_txd, num_rxd;

	ctx = malloc(sizeof(* ctx), M_IFLIB, M_WAITOK|M_ZERO);

	if (sc == NULL) {
		sc = malloc(sctx->isc_driver->size, M_IFLIB, M_WAITOK|M_ZERO);
		device_set_softc(dev, ctx);
		ctx->ifc_flags |= IFC_SC_ALLOCATED;
	}

	ctx->ifc_sctx = sctx;
	ctx->ifc_dev = dev;
	ctx->ifc_softc = sc;

	if ((err = iflib_register(ctx)) != 0) {
		device_printf(dev, "iflib_register failed %d\n", err);
		goto fail_ctx_free;
	}
	iflib_add_device_sysctl_pre(ctx);

	scctx = &ctx->ifc_softc_ctx;
	ifp = ctx->ifc_ifp;

	iflib_reset_qvalues(ctx);
	CTX_LOCK(ctx);
	if ((err = IFDI_ATTACH_PRE(ctx)) != 0) {
		device_printf(dev, "IFDI_ATTACH_PRE failed %d\n", err);
		goto fail_unlock;
	}
	_iflib_pre_assert(scctx);
	ctx->ifc_txrx = *scctx->isc_txrx;

	if (sctx->isc_flags & IFLIB_DRIVER_MEDIA)
		ctx->ifc_mediap = scctx->isc_media;

#ifdef INVARIANTS
	if (scctx->isc_capabilities & IFCAP_TXCSUM)
		MPASS(scctx->isc_tx_csum_flags);
#endif

	if_setcapabilities(ifp,
	    scctx->isc_capabilities | IFCAP_HWSTATS | IFCAP_NOMAP);
	if_setcapenable(ifp,
	    scctx->isc_capenable | IFCAP_HWSTATS | IFCAP_NOMAP);

	if (scctx->isc_ntxqsets == 0 || (scctx->isc_ntxqsets_max && scctx->isc_ntxqsets_max < scctx->isc_ntxqsets))
		scctx->isc_ntxqsets = scctx->isc_ntxqsets_max;
	if (scctx->isc_nrxqsets == 0 || (scctx->isc_nrxqsets_max && scctx->isc_nrxqsets_max < scctx->isc_nrxqsets))
		scctx->isc_nrxqsets = scctx->isc_nrxqsets_max;