net: sgi: ioc3-eth: use csum_fold (8dff19a6) · Commits · 戴 / test

drivers/net/ethernet/sgi/ioc3-eth.c

+1 −5

Original line number	Diff line number	Diff line
		@@ -1391,16 +1391,12 @@ static netdev_tx_t ioc3_start_xmit(struct sk_buff skb, struct net_device dev)
		/* Sum up dest addr, src addr and protocol */
		ehsum = eh[0] + eh[1] + eh[2] + eh[3] + eh[4] + eh[5] + eh[6];

		/* Fold ehsum. can't use csum_fold which negates also ... */
		ehsum = (ehsum & 0xffff) + (ehsum >> 16);
		ehsum = (ehsum & 0xffff) + (ehsum >> 16);

		/* Skip IP header; it's sum is always zero and was
		* already filled in by ip_output.c
		*/
		csum = csum_tcpudp_nofold(ih->saddr, ih->daddr,
		ih->tot_len - (ih->ihl << 2),
		proto, 0xffff ^ ehsum);
		proto, csum_fold(ehsum));

		csum = (csum & 0xffff) + (csum >> 16); /* Fold again */
		csum = (csum & 0xffff) + (csum >> 16);