hw/usb/dev-network.c: Use ldl_le_p() and stl_le_p()
Use stl_le_p() and ldl_le_p() to read and write data from buffers, rather than using pointer casts and cpu_to_le32() for writes and le32_to_cpup() for reads. This: * avoids lots of casts * works even if the buffer isn't as aligned as the host would like * avoids using the *_to_cpup() functions which we want to get rid of Note that there may still be some places where a pointer from the guest is cast to a pointer to a host structure; these would also have to be changed for the device to work on a host CPU which enforces alignment restrictions. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Eric Blake <eblake@redhat.com> Message-id: 1465573077-29221-1-git-send-email-peter.maydell@linaro.org Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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@ -670,48 +670,49 @@ static int ndis_query(USBNetState *s, uint32_t oid,
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/* general oids (table 4-1) */
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/* mandatory */
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case OID_GEN_SUPPORTED_LIST:
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for (i = 0; i < ARRAY_SIZE(oid_supported_list); i++)
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((le32 *) outbuf)[i] = cpu_to_le32(oid_supported_list[i]);
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for (i = 0; i < ARRAY_SIZE(oid_supported_list); i++) {
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stl_le_p(outbuf + (i * sizeof(le32)), oid_supported_list[i]);
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}
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return sizeof(oid_supported_list);
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/* mandatory */
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case OID_GEN_HARDWARE_STATUS:
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*((le32 *) outbuf) = cpu_to_le32(0);
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stl_le_p(outbuf, 0);
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return sizeof(le32);
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/* mandatory */
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case OID_GEN_MEDIA_SUPPORTED:
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*((le32 *) outbuf) = cpu_to_le32(s->medium);
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stl_le_p(outbuf, s->medium);
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return sizeof(le32);
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/* mandatory */
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case OID_GEN_MEDIA_IN_USE:
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*((le32 *) outbuf) = cpu_to_le32(s->medium);
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stl_le_p(outbuf, s->medium);
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return sizeof(le32);
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/* mandatory */
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case OID_GEN_MAXIMUM_FRAME_SIZE:
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*((le32 *) outbuf) = cpu_to_le32(ETH_FRAME_LEN);
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stl_le_p(outbuf, ETH_FRAME_LEN);
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return sizeof(le32);
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/* mandatory */
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case OID_GEN_LINK_SPEED:
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*((le32 *) outbuf) = cpu_to_le32(s->speed);
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stl_le_p(outbuf, s->speed);
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return sizeof(le32);
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/* mandatory */
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case OID_GEN_TRANSMIT_BLOCK_SIZE:
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*((le32 *) outbuf) = cpu_to_le32(ETH_FRAME_LEN);
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stl_le_p(outbuf, ETH_FRAME_LEN);
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return sizeof(le32);
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/* mandatory */
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case OID_GEN_RECEIVE_BLOCK_SIZE:
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*((le32 *) outbuf) = cpu_to_le32(ETH_FRAME_LEN);
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stl_le_p(outbuf, ETH_FRAME_LEN);
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return sizeof(le32);
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/* mandatory */
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case OID_GEN_VENDOR_ID:
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*((le32 *) outbuf) = cpu_to_le32(s->vendorid);
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stl_le_p(outbuf, s->vendorid);
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return sizeof(le32);
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/* mandatory */
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@ -720,58 +721,57 @@ static int ndis_query(USBNetState *s, uint32_t oid,
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return strlen((char *)outbuf) + 1;
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case OID_GEN_VENDOR_DRIVER_VERSION:
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*((le32 *) outbuf) = cpu_to_le32(1);
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stl_le_p(outbuf, 1);
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return sizeof(le32);
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/* mandatory */
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case OID_GEN_CURRENT_PACKET_FILTER:
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*((le32 *) outbuf) = cpu_to_le32(s->filter);
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stl_le_p(outbuf, s->filter);
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return sizeof(le32);
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/* mandatory */
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case OID_GEN_MAXIMUM_TOTAL_SIZE:
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*((le32 *) outbuf) = cpu_to_le32(RNDIS_MAX_TOTAL_SIZE);
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stl_le_p(outbuf, RNDIS_MAX_TOTAL_SIZE);
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return sizeof(le32);
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/* mandatory */
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case OID_GEN_MEDIA_CONNECT_STATUS:
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*((le32 *) outbuf) = cpu_to_le32(s->media_state);
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stl_le_p(outbuf, s->media_state);
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return sizeof(le32);
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case OID_GEN_PHYSICAL_MEDIUM:
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*((le32 *) outbuf) = cpu_to_le32(0);
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stl_le_p(outbuf, 0);
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return sizeof(le32);
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case OID_GEN_MAC_OPTIONS:
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*((le32 *) outbuf) = cpu_to_le32(
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NDIS_MAC_OPTION_RECEIVE_SERIALIZED |
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stl_le_p(outbuf, NDIS_MAC_OPTION_RECEIVE_SERIALIZED |
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NDIS_MAC_OPTION_FULL_DUPLEX);
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return sizeof(le32);
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/* statistics OIDs (table 4-2) */
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/* mandatory */
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case OID_GEN_XMIT_OK:
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*((le32 *) outbuf) = cpu_to_le32(0);
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stl_le_p(outbuf, 0);
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return sizeof(le32);
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/* mandatory */
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case OID_GEN_RCV_OK:
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*((le32 *) outbuf) = cpu_to_le32(0);
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stl_le_p(outbuf, 0);
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return sizeof(le32);
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/* mandatory */
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case OID_GEN_XMIT_ERROR:
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*((le32 *) outbuf) = cpu_to_le32(0);
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stl_le_p(outbuf, 0);
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return sizeof(le32);
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/* mandatory */
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case OID_GEN_RCV_ERROR:
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*((le32 *) outbuf) = cpu_to_le32(0);
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stl_le_p(outbuf, 0);
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return sizeof(le32);
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/* mandatory */
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case OID_GEN_RCV_NO_BUFFER:
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*((le32 *) outbuf) = cpu_to_le32(0);
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stl_le_p(outbuf, 0);
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return sizeof(le32);
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/* ieee802.3 OIDs (table 4-3) */
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@ -787,12 +787,12 @@ static int ndis_query(USBNetState *s, uint32_t oid,
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/* mandatory */
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case OID_802_3_MULTICAST_LIST:
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*((le32 *) outbuf) = cpu_to_le32(0xe0000000);
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stl_le_p(outbuf, 0xe0000000);
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return sizeof(le32);
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/* mandatory */
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case OID_802_3_MAXIMUM_LIST_SIZE:
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*((le32 *) outbuf) = cpu_to_le32(1);
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stl_le_p(outbuf, 1);
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return sizeof(le32);
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case OID_802_3_MAC_OPTIONS:
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@ -801,17 +801,17 @@ static int ndis_query(USBNetState *s, uint32_t oid,
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/* ieee802.3 statistics OIDs (table 4-4) */
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/* mandatory */
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case OID_802_3_RCV_ERROR_ALIGNMENT:
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*((le32 *) outbuf) = cpu_to_le32(0);
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stl_le_p(outbuf, 0);
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return sizeof(le32);
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/* mandatory */
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case OID_802_3_XMIT_ONE_COLLISION:
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*((le32 *) outbuf) = cpu_to_le32(0);
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stl_le_p(outbuf, 0);
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return sizeof(le32);
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/* mandatory */
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case OID_802_3_XMIT_MORE_COLLISIONS:
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*((le32 *) outbuf) = cpu_to_le32(0);
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stl_le_p(outbuf, 0);
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return sizeof(le32);
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default:
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@ -826,7 +826,7 @@ static int ndis_set(USBNetState *s, uint32_t oid,
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{
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switch (oid) {
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case OID_GEN_CURRENT_PACKET_FILTER:
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s->filter = le32_to_cpup((le32 *) inbuf);
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s->filter = ldl_le_p(inbuf);
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if (s->filter) {
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s->rndis_state = RNDIS_DATA_INITIALIZED;
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} else {
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@ -1026,10 +1026,7 @@ static void usb_net_reset_in_buf(USBNetState *s)
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static int rndis_parse(USBNetState *s, uint8_t *data, int length)
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{
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uint32_t msg_type;
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le32 *tmp = (le32 *) data;
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msg_type = le32_to_cpup(tmp);
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uint32_t msg_type = ldl_le_p(data);
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switch (msg_type) {
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case RNDIS_INITIALIZE_MSG:
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