Commit 937fca91 authored by Jakub Kicinski's avatar Jakub Kicinski Committed by David S. Miller
Browse files

udplite: remove udplite_csum_outgoing() 



Not used since v4.0.

Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent cc81df83

include/net/udplite.h

+0 −43
Original line number Diff line number Diff line
@@ -70,49 +70,6 @@ static inline int udplite_checksum_init(struct sk_buff *skb, struct udphdr *uh) 
	return 0;

}



/* Slow-path computation of checksum. Socket is locked. */

static inline __wsum udplite_csum_outgoing(struct sock *sk, struct sk_buff *skb)

{

	const struct udp_sock *up = udp_sk(skb->sk);

	int cscov = up->len;

	__wsum csum = 0;



	if (up->pcflag & UDPLITE_SEND_CC) {

		/*

		 * Sender has set `partial coverage' option on UDP-Lite socket.

		 * The special case "up->pcslen == 0" signifies full coverage.

		 */

		if (up->pcslen < up->len) {

			if (0 < up->pcslen)

				cscov = up->pcslen;

			udp_hdr(skb)->len = htons(up->pcslen);

		}

		/*

		 * NOTE: Causes for the error case  `up->pcslen > up->len':

		 *        (i)  Application error (will not be penalized).

		 *       (ii)  Payload too big for send buffer: data is split

		 *             into several packets, each with its own header.

		 *             In this case (e.g. last segment), coverage may

		 *             exceed packet length.

		 *       Since packets with coverage length > packet length are

		 *       illegal, we fall back to the defaults here.

		 */

	}



	skb->ip_summed = CHECKSUM_NONE;     /* no HW support for checksumming */



	skb_queue_walk(&sk->sk_write_queue, skb) {

		const int off = skb_transport_offset(skb);

		const int len = skb->len - off;



		csum = skb_checksum(skb, off, (cscov > len)? len : cscov, csum);



		if ((cscov -= len) <= 0)

			break;

	}

	return csum;

}



/* Fast-path computation of checksum. Socket may not be locked. */

static inline __wsum udplite_csum(struct sk_buff *skb)

{