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net: systemport: fix bcm_sysport_insert_tsb() 

Similar to commit bc23333ba1 ("net:
bcmgenet: fix bcmgenet_put_tx_csum()"), we need to return the skb
pointer in case we had to reallocate the SKB headroom.

Fixes: 80105befdb ("net: systemport: add Broadcom SYSTEMPORT Ethernet MAC driver")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Florian Fainelli 2014-10-02 09:43:16 -07:00 committed by David S. Miller
parent 3be07244b7
commit e87474a6e6
1 changed files with 7 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
drivers/net/ethernet/broadcom/bcmsysport.c
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@ -848,7 +848,8 @@ static irqreturn_t bcm_sysport_wol_isr(int irq, void *dev_id)
return IRQ_HANDLED;
}
static int bcm_sysport_insert_tsb(struct sk_buff *skb, struct net_device *dev)
static struct sk_buff *bcm_sysport_insert_tsb(struct sk_buff *skb,
struct net_device *dev)
{
struct sk_buff *nskb;
struct bcm_tsb *tsb;
@ -864,7 +865,7 @@ static int bcm_sysport_insert_tsb(struct sk_buff *skb, struct net_device *dev)
if (!nskb) {
dev->stats.tx_errors++;
dev->stats.tx_dropped++;
return -ENOMEM;
return NULL;
}
skb = nskb;
}
@ -883,7 +884,7 @@ static int bcm_sysport_insert_tsb(struct sk_buff *skb, struct net_device *dev)
ip_proto = ipv6_hdr(skb)->nexthdr;
break;
default:
return 0;
return skb;
}
/* Get the checksum offset and the L4 (transport) offset */
@ -902,7 +903,7 @@ static int bcm_sysport_insert_tsb(struct sk_buff *skb, struct net_device *dev)
tsb->l4_ptr_dest_map = csum_info;
}
return 0;
return skb;
}
static netdev_tx_t bcm_sysport_xmit(struct sk_buff *skb,
@ -936,8 +937,8 @@ static netdev_tx_t bcm_sysport_xmit(struct sk_buff *skb,
/* Insert TSB and checksum infos */
if (priv->tsb_en) {
ret = bcm_sysport_insert_tsb(skb, dev);
if (ret) {
skb = bcm_sysport_insert_tsb(skb, dev);
if (!skb) {
ret = NETDEV_TX_OK;
goto out;
}