From: Samuel Obuch <samuel.ob...@codasip.com>
The maximum length is capped similarly to the emaclite_send function.
Avoid integer underflow for values of ip->ip_len < 30, the minimum
length of an IP packet is 21 bytes.
Signed-off-by: Samuel Obuch <samuel.ob...@codasip.com>
---
drivers/net/xilinx_emaclite.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/net/xilinx_emaclite.c b/drivers/net/xilinx_emaclite.c
index a4851ad36f..16ba915fba 100644
--- a/drivers/net/xilinx_emaclite.c
+++ b/drivers/net/xilinx_emaclite.c
@@ -517,6 +517,8 @@ try_again:
length = ntohs(ip->ip_len);
length += ETHER_HDR_SIZE + ETH_FCS_LEN;
debug("IP Packet %x\n", length);
+ if (length > PKTSIZE)
+ length = PKTSIZE;
break;
default:
debug("Other Packet\n");
@@ -525,7 +527,7 @@ try_again:
}
/* Read the rest of the packet which is longer then first read */
- if (length != first_read)
+ if (length > first_read)
xemaclite_alignedread(addr + first_read,
etherrxbuff + first_read,
length - first_read);
--
2.31.1
