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Revision 21f1b8a6636c4dbde4aa1ec0343f42eaf653ffcc authored by Paolo Abeni on 26 April 2019, 10:50:44 UTC, committed by David S. Miller on 28 April 2019, 02:07:24 UTC 
udp: fix GRO reception in case of length mismatch
 
Currently, the UDP GRO code path does bad things on some edge
conditions - Aggregation can happen even on packet with different
lengths.

Fix the above by rewriting the 'complete' condition for GRO
packets. While at it, note explicitly that we allow merging the
first packet per burst below gso_size.

Reported-by: Sean Tong <seantong114@gmail.com>
Fixes: e20cf8d3f1f7 ("udp: implement GRO for plain UDP sockets.")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
1 parent fbef947
Raw File
kernelcapi.h 
/* SPDX-License-Identifier: GPL-2.0 */
/*
 * $Id: kernelcapi.h,v 1.8.6.2 2001/02/07 11:31:31 kai Exp $
 * 
 * Kernel CAPI 2.0 Interface for Linux
 * 
 * (c) Copyright 1997 by Carsten Paeth (calle@calle.in-berlin.de)
 * 
 */
#ifndef __KERNELCAPI_H__
#define __KERNELCAPI_H__


#include <linux/list.h>
#include <linux/skbuff.h>
#include <linux/workqueue.h>
#include <linux/notifier.h>
#include <uapi/linux/kernelcapi.h>

struct capi20_appl {
	u16 applid;
	capi_register_params rparam;
	void (*recv_message)(struct capi20_appl *ap, struct sk_buff *skb);
	void *private;

	/* internal to kernelcapi.o */
	unsigned long nrecvctlpkt;
	unsigned long nrecvdatapkt;
	unsigned long nsentctlpkt;
	unsigned long nsentdatapkt;
	struct mutex recv_mtx;
	struct sk_buff_head recv_queue;
	struct work_struct recv_work;
	int release_in_progress;
};

u16 capi20_isinstalled(void);
u16 capi20_register(struct capi20_appl *ap);
u16 capi20_release(struct capi20_appl *ap);
u16 capi20_put_message(struct capi20_appl *ap, struct sk_buff *skb);
u16 capi20_get_manufacturer(u32 contr, u8 buf[CAPI_MANUFACTURER_LEN]);
u16 capi20_get_version(u32 contr, struct capi_version *verp);
u16 capi20_get_serial(u32 contr, u8 serial[CAPI_SERIAL_LEN]);
u16 capi20_get_profile(u32 contr, struct capi_profile *profp);
int capi20_manufacturer(unsigned long cmd, void __user *data);

#define CAPICTR_UP			0
#define CAPICTR_DOWN			1

int register_capictr_notifier(struct notifier_block *nb);
int unregister_capictr_notifier(struct notifier_block *nb);

#define CAPI_NOERROR                      0x0000

#define CAPI_TOOMANYAPPLS		  0x1001
#define CAPI_LOGBLKSIZETOSMALL	          0x1002
#define CAPI_BUFFEXECEEDS64K 	          0x1003
#define CAPI_MSGBUFSIZETOOSMALL	          0x1004
#define CAPI_ANZLOGCONNNOTSUPPORTED	  0x1005
#define CAPI_REGRESERVED		  0x1006
#define CAPI_REGBUSY 		          0x1007
#define CAPI_REGOSRESOURCEERR	          0x1008
#define CAPI_REGNOTINSTALLED 	          0x1009
#define CAPI_REGCTRLERNOTSUPPORTEXTEQUIP  0x100a
#define CAPI_REGCTRLERONLYSUPPORTEXTEQUIP 0x100b

#define CAPI_ILLAPPNR		          0x1101
#define CAPI_ILLCMDORSUBCMDORMSGTOSMALL   0x1102
#define CAPI_SENDQUEUEFULL		  0x1103
#define CAPI_RECEIVEQUEUEEMPTY	          0x1104
#define CAPI_RECEIVEOVERFLOW 	          0x1105
#define CAPI_UNKNOWNNOTPAR		  0x1106
#define CAPI_MSGBUSY 		          0x1107
#define CAPI_MSGOSRESOURCEERR	          0x1108
#define CAPI_MSGNOTINSTALLED 	          0x1109
#define CAPI_MSGCTRLERNOTSUPPORTEXTEQUIP  0x110a
#define CAPI_MSGCTRLERONLYSUPPORTEXTEQUIP 0x110b

typedef enum {
        CapiMessageNotSupportedInCurrentState = 0x2001,
        CapiIllContrPlciNcci                  = 0x2002,
        CapiNoPlciAvailable                   = 0x2003,
        CapiNoNcciAvailable                   = 0x2004,
        CapiNoListenResourcesAvailable        = 0x2005,
        CapiNoFaxResourcesAvailable           = 0x2006,
        CapiIllMessageParmCoding              = 0x2007,
} RESOURCE_CODING_PROBLEM;

typedef enum {
        CapiB1ProtocolNotSupported                      = 0x3001,
        CapiB2ProtocolNotSupported                      = 0x3002,
        CapiB3ProtocolNotSupported                      = 0x3003,
        CapiB1ProtocolParameterNotSupported             = 0x3004,
        CapiB2ProtocolParameterNotSupported             = 0x3005,
        CapiB3ProtocolParameterNotSupported             = 0x3006,
        CapiBProtocolCombinationNotSupported            = 0x3007,
        CapiNcpiNotSupported                            = 0x3008,
        CapiCipValueUnknown                             = 0x3009,
        CapiFlagsNotSupported                           = 0x300a,
        CapiFacilityNotSupported                        = 0x300b,
        CapiDataLengthNotSupportedByCurrentProtocol     = 0x300c,
        CapiResetProcedureNotSupportedByCurrentProtocol = 0x300d,
        CapiTeiAssignmentFailed                         = 0x300e,
} REQUESTED_SERVICES_PROBLEM;

typedef enum {
	CapiSuccess                                     = 0x0000,
	CapiSupplementaryServiceNotSupported            = 0x300e,
	CapiRequestNotAllowedInThisState                = 0x3010,
} SUPPLEMENTARY_SERVICE_INFO;

typedef enum {
	CapiProtocolErrorLayer1                         = 0x3301,
	CapiProtocolErrorLayer2                         = 0x3302,
	CapiProtocolErrorLayer3                         = 0x3303,
	CapiTimeOut                                     = 0x3303, // SuppServiceReason
	CapiCallGivenToOtherApplication                 = 0x3304,
} CAPI_REASON;

#endif				/* __KERNELCAPI_H__ */
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