[PATCH net-next 7/9] netxen: use pskb_may_pull() to pull excess TX frags into the head

[Josef Bacik <josef@xxxxxxxxxxxxxx>]

netxen_nic_xmit_frame() pulls the frags that don't fit in a TX
descriptor into the head with __pskb_pull_tail().  It already checks
the result.  Switch to pskb_may_pull(), which takes the length the head
should end up with and checks it against the skb, so this driver no
longer calls __pskb_pull_tail() directly.

Assisted-by: LLM
Signed-off-by: Josef Bacik <josef@xxxxxxxxxxxxxx>
---
 drivers/net/ethernet/qlogic/netxen/netxen_nic_main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/qlogic/netxen/netxen_nic_main.c 
b/drivers/net/ethernet/qlogic/netxen/netxen_nic_main.c
index 67d9bf69f8f2..202deb64ddef 100644
--- a/drivers/net/ethernet/qlogic/netxen/netxen_nic_main.c
+++ b/drivers/net/ethernet/qlogic/netxen/netxen_nic_main.c
@@ -2045,7 +2045,7 @@ netxen_nic_xmit_frame(struct sk_buff *skb, struct 
net_device *netdev)
                        delta += skb_frag_size(frag);
                }
 
-               if (!__pskb_pull_tail(skb, delta))
+               if (!pskb_may_pull(skb, skb_headlen(skb) + delta))
                        goto drop_packet;
 
                frag_count = 1 + skb_shinfo(skb)->nr_frags;

-- 
2.55.0