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| author | Eric Dumazet <edumazet@google.com> | 2012-06-10 23:24:00 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-06-11 13:12:26 -0700 |
| commit | e30478598a8476d02e3b00caa89ce1a3b1dad54b (patch) | |
| tree | 07344e1c01b5f42ec78fc62b49ca37b9052d1ce6 | |
| parent | ed6be3dcfee0bb891efd6ea908ca32bea711085b (diff) | |
| download | op-kernel-dev-e30478598a8476d02e3b00caa89ce1a3b1dad54b.zip op-kernel-dev-e30478598a8476d02e3b00caa89ce1a3b1dad54b.tar.gz | |
lpc_eth: add missing ndo_change_mtu()
lpc_eth does a copy of transmitted skbs to DMA area, without checking
skb lengths, so can trigger buffer overflows :
memcpy(pldat->tx_buff_v + txidx * ENET_MAXF_SIZE, skb->data, len);
One way to get bigger skbs is to allow MTU changes above the 1500 limit.
Calling eth_change_mtu() in ndo_change_mtu() makes sure this cannot
happen.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Roland Stigge <stigge@antcom.de>
Cc: Kevin Wells <kevin.wells@nxp.com>
Acked-by: Roland Stigge <stigge@antcom.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/ethernet/nxp/lpc_eth.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/ethernet/nxp/lpc_eth.c b/drivers/net/ethernet/nxp/lpc_eth.c index 8d2666f..10febdc 100644 --- a/drivers/net/ethernet/nxp/lpc_eth.c +++ b/drivers/net/ethernet/nxp/lpc_eth.c @@ -1320,6 +1320,7 @@ static const struct net_device_ops lpc_netdev_ops = { .ndo_set_rx_mode = lpc_eth_set_multicast_list, .ndo_do_ioctl = lpc_eth_ioctl, .ndo_set_mac_address = lpc_set_mac_address, + .ndo_change_mtu = eth_change_mtu, }; static int lpc_eth_drv_probe(struct platform_device *pdev) |
