| Message ID | 5429940D.4040500@oracle.com |
|---|---|
| State | Superseded, archived |
| Delegated to: | David Miller |
| Headers | show |
From: David L Stevens <david.stevens@oracle.com> Date: Mon, 29 Sep 2014 13:17:01 -0400 > @@ -884,6 +884,9 @@ static int vnet_start_xmit(struct sk_buff *skb, struct net_device *dev) > skb = vnet_skb_shape(skb, &start, &nlen); > + if (skb->len > port->rmtu) > + goto out_dropped; > + > spin_lock_irqsave(&port->vio.lock, flags); More patch corruption. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On 09/29/2014 02:58 PM, David Miller wrote: > > More patch corruption. > Yes, sorry about that. I lost my .gitconfig in a crash and the backup wasn't quite right; fixed, and the ones with subject "PATCHv7" I believe are correct. +-DLS -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/arch/sparc/kernel/ldc.c b/arch/sparc/kernel/ldc.c index 66dacd5..0af28b9 100644 --- a/arch/sparc/kernel/ldc.c +++ b/arch/sparc/kernel/ldc.c @@ -2159,7 +2159,7 @@ int ldc_map_single(struct ldc_channel *lp, state.pte_idx = (base - iommu->page_table); state.nc = 0; fill_cookies(&state, (pa & PAGE_MASK), (pa & ~PAGE_MASK), len); - BUG_ON(state.nc != 1); + BUG_ON(state.nc > ncookies); return state.nc; } diff --git a/drivers/net/ethernet/sun/sunvnet.c b/drivers/net/ethernet/sun/sunvnet.c index f3a3fc1..1a7dce0 100644 --- a/drivers/net/ethernet/sun/sunvnet.c +++ b/drivers/net/ethernet/sun/sunvnet.c @@ -884,6 +884,9 @@ static int vnet_start_xmit(struct sk_buff *skb, struct net_device *dev) skb = vnet_skb_shape(skb, &start, &nlen); + if (skb->len > port->rmtu) + goto out_dropped; + spin_lock_irqsave(&port->vio.lock, flags); dr = &port->vio.drings[VIO_DRIVER_TX_RING]; @@ -914,7 +917,7 @@ static int vnet_start_xmit(struct sk_buff *skb, struct net_device *dev) port->tx_bufs[txi].skb = skb; err = ldc_map_single(port->vio.lp, start, nlen, - port->tx_bufs[txi].cookies, 2, + port->tx_bufs[txi].cookies, VNET_MAXCOOKIES, (LDC_MAP_SHADOW | LDC_MAP_DIRECT | LDC_MAP_RW)); if (err < 0) { netdev_info(dev, "tx buffer map error %d\n", err); @@ -1143,7 +1146,7 @@ static void vnet_set_rx_mode(struct net_device *dev) static int vnet_change_mtu(struct net_device *dev, int new_mtu) { - if (new_mtu != ETH_DATA_LEN) + if (new_mtu < 68 || new_mtu > 65535) return -EINVAL; dev->mtu = new_mtu; diff --git a/drivers/net/ethernet/sun/sunvnet.h b/drivers/net/ethernet/sun/sunvnet.h index f18409b..ead9001 100644 --- a/drivers/net/ethernet/sun/sunvnet.h +++ b/drivers/net/ethernet/sun/sunvnet.h @@ -11,7 +11,7 @@ */ #define VNET_TX_TIMEOUT (5 * HZ) -#define VNET_MAXPACKET 1518ULL /* ETH_FRAMELEN + VLAN_HDR */ +#define VNET_MAXPACKET (65535ULL + ETH_HLEN + VLAN_HLEN) #define VNET_TX_RING_SIZE 512 #define VNET_TX_WAKEUP_THRESH(dr) ((dr)->pending / 4) @@ -21,10 +21,12 @@ */
This patch allows an admin to set the MTU on a sunvnet device to arbitrary values between the minimum (68) and maximum (65535) IPv4 packet sizes. Signed-off-by: David L Stevens <david.stevens@oracle.com> --- arch/sparc/kernel/ldc.c | 2 +- drivers/net/ethernet/sun/sunvnet.c | 7 +++++-- drivers/net/ethernet/sun/sunvnet.h | 6 ++++-- 3 files changed, 10 insertions(+), 5 deletions(-) #define VNET_PACKET_SKIP 6 +#define VNET_MAXCOOKIES (VNET_MAXPACKET/PAGE_SIZE + 1) + struct vnet_tx_entry { struct sk_buff *skb; unsigned int ncookies; - struct ldc_trans_cookie cookies[2]; + struct ldc_trans_cookie cookies[VNET_MAXCOOKIES]; }; struct vnet;