Differential D7577 Diff 19534 head/sys/dev/hyperv/netvsc/hv_rndis_filter.c

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head/sys/dev/hyperv/netvsc/hv_rndis_filter.c

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/*		/*
* RNDIS filter on device add		* RNDIS filter on device add
*/		*/
int		int
hv_rf_on_device_add(struct hn_softc sc, void additl_info,		hv_rf_on_device_add(struct hn_softc sc, void additl_info,
int nchan0, struct hn_rx_ring rxr)		int nchan0, struct hn_rx_ring rxr)
{		{
struct hn_send_ctx sndc;
int ret;		int ret;
rndis_device *rndis_dev;		rndis_device *rndis_dev;
rndis_offload_params offloads;		rndis_offload_params offloads;
struct rndis_recv_scale_cap rsscaps;		struct rndis_recv_scale_cap rsscaps;
uint32_t rsscaps_size = sizeof(struct rndis_recv_scale_cap);		uint32_t rsscaps_size = sizeof(struct rndis_recv_scale_cap);
netvsc_device_info dev_info = (netvsc_device_info )additl_info;		netvsc_device_info dev_info = (netvsc_device_info )additl_info;
device_t dev = sc->hn_dev;		device_t dev = sc->hn_dev;
struct hn_nvs_subch_req *req;		struct hn_nvs_subch_req *req;
const struct hn_nvs_subch_resp *resp;		const struct hn_nvs_subch_resp *resp;
size_t resp_len;		size_t resp_len;
struct vmbus_xact *xact;		struct vmbus_xact *xact = NULL;
uint32_t status, nsubch;		uint32_t status, nsubch;
int nchan = *nchan0;		int nchan = *nchan0;

rndis_dev = hv_get_rndis_device();		rndis_dev = hv_get_rndis_device();
if (rndis_dev == NULL) {		if (rndis_dev == NULL) {
return (ENOMEM);		return (ENOMEM);
}		}
sc->rndis_dev = rndis_dev;		sc->rndis_dev = rndis_dev;
▲ Show 20 Lines • Show All 78 Lines • ▼ Show 20 Lines	hv_rf_on_device_add(struct hn_softc sc, void additl_info,
* Ask NVS to allocate sub-channels.		* Ask NVS to allocate sub-channels.
*/		*/
xact = vmbus_xact_get(sc->hn_xact, sizeof(*req));		xact = vmbus_xact_get(sc->hn_xact, sizeof(*req));
if (xact == NULL) {		if (xact == NULL) {
if_printf(sc->hn_ifp, "no xact for nvs subch req\n");		if_printf(sc->hn_ifp, "no xact for nvs subch req\n");
ret = ENXIO;		ret = ENXIO;
goto out;		goto out;
}		}

req = vmbus_xact_req_data(xact);		req = vmbus_xact_req_data(xact);
req->nvs_type = HN_NVS_TYPE_SUBCH_REQ;		req->nvs_type = HN_NVS_TYPE_SUBCH_REQ;
req->nvs_op = HN_NVS_SUBCH_OP_ALLOC;		req->nvs_op = HN_NVS_SUBCH_OP_ALLOC;
req->nvs_nsubch = nchan - 1;		req->nvs_nsubch = nchan - 1;

hn_send_ctx_init_simple(&sndc, hn_nvs_sent_xact, xact);		resp = hn_nvs_xact_execute(sc, xact, req, sizeof(*req), &resp_len);
vmbus_xact_activate(xact);		if (resp == NULL) {
		if_printf(sc->hn_ifp, "exec subch failed\n");
ret = hn_nvs_send(sc->hn_prichan, VMBUS_CHANPKT_FLAG_RC,		ret = EIO;
req, sizeof(*req), &sndc);
if (ret != 0) {
if_printf(sc->hn_ifp, "send nvs subch req failed: %d\n", ret);
vmbus_xact_deactivate(xact);
vmbus_xact_put(xact);
goto out;		goto out;
}		}

resp = vmbus_xact_wait(xact, &resp_len);
if (resp_len < sizeof(*resp)) {		if (resp_len < sizeof(*resp)) {
if_printf(sc->hn_ifp, "invalid subch resp length %zu\n",		if_printf(sc->hn_ifp, "invalid subch resp length %zu\n",
resp_len);		resp_len);
vmbus_xact_put(xact);
ret = EINVAL;		ret = EINVAL;
goto out;		goto out;
}		}
if (resp->nvs_type != HN_NVS_TYPE_SUBCH_RESP) {		if (resp->nvs_type != HN_NVS_TYPE_SUBCH_RESP) {
if_printf(sc->hn_ifp, "not subch resp, type %u\n",		if_printf(sc->hn_ifp, "not subch resp, type %u\n",
resp->nvs_type);		resp->nvs_type);
vmbus_xact_put(xact);
ret = EINVAL;		ret = EINVAL;
goto out;		goto out;
}		}

status = resp->nvs_status;		status = resp->nvs_status;
nsubch = resp->nvs_nsubch;		nsubch = resp->nvs_nsubch;
vmbus_xact_put(xact);		vmbus_xact_put(xact);
		xact = NULL;

if (status != HN_NVS_STATUS_OK) {		if (status != HN_NVS_STATUS_OK) {
if_printf(sc->hn_ifp, "subch req failed: %x\n", status);		if_printf(sc->hn_ifp, "subch req failed: %x\n", status);
ret = EIO;		ret = EIO;
goto out;		goto out;
}		}
if (nsubch > nchan - 1) {		if (nsubch > nchan - 1) {
if_printf(sc->hn_ifp, "%u subchans are allocated, requested %u\n",		if_printf(sc->hn_ifp, "%u subchans are allocated, requested %u\n",
nsubch, nchan - 1);		nsubch, nchan - 1);
nsubch = nchan - 1;		nsubch = nchan - 1;
}		}
nchan = nsubch + 1;		nchan = nsubch + 1;

ret = hv_rf_set_rss_param(rndis_dev, nchan);		ret = hv_rf_set_rss_param(rndis_dev, nchan);
*nchan0 = nchan;		*nchan0 = nchan;
out:		out:
		if (xact != NULL)
		vmbus_xact_put(xact);
return (ret);		return (ret);
}		}

/*		/*
* RNDIS filter on device remove		* RNDIS filter on device remove
*/		*/
int		int
hv_rf_on_device_remove(struct hn_softc *sc, boolean_t destroy_channel)		hv_rf_on_device_remove(struct hn_softc *sc, boolean_t destroy_channel)
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