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Commit 5aed3243 authored by Gerrit Renker's avatar Gerrit Renker Committed by David S. Miller
Browse files

[DCCP]: Tidy up unused structures 



This removes and cleans up unused variables and structures which have become
unnecessary following the introduction of the EWMA patch to automatically track
the CCID 3 receiver/sender packet sizes `s'.

It deprecates the PACKET_SIZE socket option by returning an error code and
printing a deprecation warning if an application tries to read or write this
socket option.

Signed-off-by: default avatarGerrit Renker <gerrit@erg.abdn.ac.uk>
Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@mandriva.com>
parent 78ad713d

include/linux/dccp.h

+1 −3
Original line number Diff line number Diff line
@@ -200,7 +200,7 @@ struct dccp_so_feat { 
};



/* DCCP socket options */

#define DCCP_SOCKOPT_PACKET_SIZE	1

#define DCCP_SOCKOPT_PACKET_SIZE	1 /* XXX deprecated, without effect */

#define DCCP_SOCKOPT_SERVICE		2

#define DCCP_SOCKOPT_CHANGE_L		3

#define DCCP_SOCKOPT_CHANGE_R		4
@@ -460,7 +460,6 @@ struct dccp_ackvec; 
 * @dccps_service_list - second .. last service code on passive socket

 * @dccps_timestamp_time - time of latest TIMESTAMP option

 * @dccps_timestamp_echo - latest timestamp received on a TIMESTAMP option

 * @dccps_packet_size - Set thru setsockopt

 * @dccps_l_ack_ratio -

 * @dccps_r_ack_ratio -

 * @dccps_pcslen - sender   partial checksum coverage (via sockopt)
@@ -495,7 +494,6 @@ struct dccp_sock { 
	struct dccp_service_list	*dccps_service_list;

	struct timeval			dccps_timestamp_time;

	__u32				dccps_timestamp_echo;

	__u32				dccps_packet_size;

	__u16				dccps_l_ack_ratio;

	__u16				dccps_r_ack_ratio;

	__u16				dccps_pcslen;

net/dccp/ccids/ccid3.h

+0 −4
Original line number Diff line number Diff line
@@ -42,10 +42,6 @@ 
#include <linux/tfrc.h>

#include "../ccid.h"



#define TFRC_MIN_PACKET_SIZE	   16

#define TFRC_STD_PACKET_SIZE	  256

#define TFRC_MAX_PACKET_SIZE	65535



/* Two seconds as per RFC 3448 4.2 */

#define TFRC_INITIAL_TIMEOUT	   (2 * USEC_PER_SEC)

net/dccp/proto.c

+4 −4
Original line number Diff line number Diff line
@@ -470,7 +470,8 @@ static int do_dccp_setsockopt(struct sock *sk, int level, int optname, 
	lock_sock(sk);

	switch (optname) {

	case DCCP_SOCKOPT_PACKET_SIZE:

		dp->dccps_packet_size = val;

		DCCP_WARN("sockopt(PACKET_SIZE) is deprecated: fix your app\n");

		err = -EINVAL;

		break;

	case DCCP_SOCKOPT_CHANGE_L:

		if (optlen != sizeof(struct dccp_so_feat))
@@ -581,9 +582,8 @@ static int do_dccp_getsockopt(struct sock *sk, int level, int optname, 


	switch (optname) {

	case DCCP_SOCKOPT_PACKET_SIZE:

		val = dp->dccps_packet_size;

		len = sizeof(dp->dccps_packet_size);

		break;

		DCCP_WARN("sockopt(PACKET_SIZE) is deprecated: fix your app\n");

		return -EINVAL;

	case DCCP_SOCKOPT_SERVICE:

		return dccp_getsockopt_service(sk, len,

					       (__be32 __user *)optval, optlen);