diff options
Diffstat (limited to 'src/drivers')
| -rw-r--r-- | src/drivers/net/rtl8139.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/drivers/net/rtl8139.c b/src/drivers/net/rtl8139.c index dd3f80e57..4ed43c02e 100644 --- a/src/drivers/net/rtl8139.c +++ b/src/drivers/net/rtl8139.c @@ -86,6 +86,7 @@ FILE_LICENCE ( GPL_ANY ); #include <ipxe/nvo.h> #define TX_RING_SIZE 4 +#define TX_MAX_LEN 8192 struct rtl8139_tx { unsigned int next; @@ -383,6 +384,13 @@ static int rtl_transmit ( struct net_device *netdev, return -ENOBUFS; } + /* Check for oversized packets */ + if ( iob_len ( iobuf ) >= TX_MAX_LEN ) { + DBGC ( rtl, "rtl8139 %p TX too large (%zd bytes)\n", + rtl, iob_len ( iobuf ) ); + return -ERANGE; + } + /* Pad and align packet */ iob_pad ( iobuf, ETH_ZLEN ); |