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Commit fcb308d5 authored by hayeswang's avatar hayeswang Committed by David S. Miller
Browse files

r8152: add skb_cow_head 



Call skb_cow_head() before editing the tx packet header. The header
would be reallocated if it is shared.

Signed-off-by: default avatarHayes Wang <hayeswang@realtek.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 8dc43ddc

drivers/net/usb/r8152.c

+10 −2
Original line number Diff line number Diff line
@@ -1376,6 +1376,11 @@ static int msdn_giant_send_check(struct sk_buff *skb) 
{

	const struct ipv6hdr *ipv6h;

	struct tcphdr *th;

	int ret;



	ret = skb_cow_head(skb, 0);

	if (ret)

		return ret;



	ipv6h = ipv6_hdr(skb);

	th = tcp_hdr(skb);
@@ -1383,7 +1388,7 @@ static int msdn_giant_send_check(struct sk_buff *skb) 
	th->check = 0;

	th->check = ~tcp_v6_check(0, &ipv6h->saddr, &ipv6h->daddr, 0);



	return 0;

	return ret;

}



static int r8152_tx_csum(struct r8152 *tp, struct tx_desc *desc,
@@ -1412,8 +1417,11 @@ static int r8152_tx_csum(struct r8152 *tp, struct tx_desc *desc, 
			break;



		case htons(ETH_P_IPV6):

			if (msdn_giant_send_check(skb)) {

				ret = TX_CSUM_TSO;

				goto unavailable;

			}

			opts1 |= GTSENDV6;

			msdn_giant_send_check(skb);

			break;



		default: