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ramips: Fix setting of rx buffer length

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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>

SVN-Revision: 47115
This commit is contained in:
John Crispin 2015-10-05 10:26:21 +00:00
parent 1aab21df9f
commit 6b4985b105
2 changed files with 3 additions and 2 deletions
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2
target/linux/ramips/files/drivers/net/ethernet/ralink/ralink_soc_eth.c
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@ -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) {

3
target/linux/ramips/files/drivers/net/ethernet/ralink/ralink_soc_eth.h
View file

@ -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)