ramips: Fix setting of rx buffer length

The length of the DMA rx buffer was always set to 0 because the function
for extracting the length was used to calculate the value for setting it.
Instead the macro has to be split in a get and set function similar to the
TX_DMA_(GET_|)PLEN(0|1) macro.

No problem was noticed on MT7621a before this was changed and thus maybe it
was hidden by different problem which is not yet fixed.

Signed-off-by: Sven Eckelmann <sven@open-mesh.com>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@47115 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/target/linux/ramips/files/drivers/net/ethernet/ralink/ralink_soc_eth.c b/target/linux/ramips/files/drivers/net/ethernet/ralink/ralink_soc_eth.c
index db6b197..2691cfb 100644 (file)
--- a/target/linux/ramips/files/drivers/net/ethernet/ralink/ralink_soc_eth.c
+++ b/target/linux/ramips/files/drivers/net/ethernet/ralink/ralink_soc_eth.c
@@ -849,7 +849,7 @@ static int fe_poll_rx(struct napi_struct *napi, int budget,
 
                dma_unmap_single(&netdev->dev, trxd.rxd1,
                                ring->rx_buf_size, DMA_FROM_DEVICE);
-               pktlen = RX_DMA_PLEN0(trxd.rxd2);
+               pktlen = RX_DMA_GET_PLEN0(trxd.rxd2);
                skb->dev = netdev;
                skb_put(skb, pktlen);
                if (trxd.rxd4 & checksum_bit) {

diff --git a/target/linux/ramips/files/drivers/net/ethernet/ralink/ralink_soc_eth.h b/target/linux/ramips/files/drivers/net/ethernet/ralink/ralink_soc_eth.h
index 78e04b0..51b087c 100644 (file)
--- a/target/linux/ramips/files/drivers/net/ethernet/ralink/ralink_soc_eth.h
+++ b/target/linux/ramips/files/drivers/net/ethernet/ralink/ralink_soc_eth.h
@@ -310,7 +310,8 @@ enum fe_work_flag {
 /* rxd2 */
 #define RX_DMA_DONE            BIT(31)
 #define RX_DMA_LSO             BIT(30)
-#define RX_DMA_PLEN0(_x)       (((_x) >> 16) & 0x3fff)
+#define RX_DMA_PLEN0(_x)       (((_x) & 0x3fff) << 16)
+#define RX_DMA_GET_PLEN0(_x)   (((_x) >> 16) & 0x3fff)
 #define RX_DMA_TAG             BIT(15)
 /* rxd3 */
 #define RX_DMA_TPID(_x)                (((_x) >> 16) & 0xffff)