net: fec_mxc: Fix DM driver issue in recv
When using ethernet DM driver, the recv interface has a
change with non-DM interface, that driver needs to set
the packet pointer and provide it to upper layer to process.
In fec driver, the fecmxc_recv functions does not handle the
packet pointer parameter. This may cause crash in upper layer
processing because the packet pointer is not set.
This patch allocates a buffer for the packet pointer and free it
through free_pkt interface.
Signed-off-by: Ye Li <ye.li@nxp.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
diff --git a/drivers/net/fec_mxc.c b/drivers/net/fec_mxc.c
index 29af85c..450cc0b 100644
--- a/drivers/net/fec_mxc.c
+++ b/drivers/net/fec_mxc.c
@@ -807,7 +807,16 @@
uint16_t bd_status;
ulong addr, size, end;
int i;
+
+#ifdef CONFIG_DM_ETH
+ *packetp = memalign(ARCH_DMA_MINALIGN, FEC_MAX_PKT_SIZE);
+ if (*packetp == 0) {
+ printf("%s: error allocating packetp\n", __func__);
+ return -ENOMEM;
+ }
+#else
ALLOC_CACHE_ALIGN_BUFFER(uchar, buff, FEC_MAX_PKT_SIZE);
+#endif
/* Check if any critical events have happened */
ievent = readl(&fec->eth->ievent);
@@ -883,8 +892,13 @@
#ifdef CONFIG_FEC_MXC_SWAP_PACKET
swap_packet((uint32_t *)addr, frame_length);
#endif
+
+#ifdef CONFIG_DM_ETH
+ memcpy(*packetp, (char *)addr, frame_length);
+#else
memcpy(buff, (char *)addr, frame_length);
net_process_received_packet(buff, frame_length);
+#endif
len = frame_length;
} else {
if (bd_status & FEC_RBD_ERR)
@@ -1202,10 +1216,19 @@
return fec_get_hwaddr(priv->dev_id, pdata->enetaddr);
}
+static int fecmxc_free_pkt(struct udevice *dev, uchar *packet, int length)
+{
+ if (packet)
+ free(packet);
+
+ return 0;
+}
+
static const struct eth_ops fecmxc_ops = {
.start = fecmxc_init,
.send = fecmxc_send,
.recv = fecmxc_recv,
+ .free_pkt = fecmxc_free_pkt,
.stop = fecmxc_halt,
.write_hwaddr = fecmxc_set_hwaddr,
.read_rom_hwaddr = fecmxc_read_rom_hwaddr,