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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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8865c418ca
We lack compat ioctl support through most of the ATM code. This patch
deals with most of it, and I can now at least use BR2684 and PPPoATM
with 32-bit userspace.
I haven't added a .compat_ioctl method to struct atm_ioctl, because
AFAICT none of the current users need any conversion -- so we can just
call the ->ioctl() method in every case. I looked at br2684, clip, lec,
mpc, pppoatm and atmtcp.
In svc_compat_ioctl() the only mangling which is needed is to change
COMPAT_ATM_ADDPARTY to ATM_ADDPARTY. Although it's defined as
_IOW('a', ATMIOC_SPECIAL+4,struct atm_iobuf)
it doesn't actually _take_ a struct atm_iobuf as an argument -- it takes
a struct sockaddr_atmsvc, which _is_ the same between 32-bit and 64-bit
code, so doesn't need conversion.
Almost all of vcc_ioctl() would have been identical, so I converted that
into a core do_vcc_ioctl() function with an 'int compat' argument.
I've done the same with atm_dev_ioctl(), where there _are_ a few
differences, but still it's relatively contained and there would
otherwise have been a lot of duplication.
I haven't done any of the actual device-specific ioctls, although I've
added a compat_ioctl method to struct atmdev_ops.
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
252 lines
7.8 KiB
C
252 lines
7.8 KiB
C
/* atm.h - general ATM declarations */
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/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
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/*
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* WARNING: User-space programs should not #include <linux/atm.h> directly.
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* Instead, #include <atm.h>
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*/
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#ifndef _LINUX_ATM_H
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#define _LINUX_ATM_H
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/*
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* BEGIN_xx and END_xx markers are used for automatic generation of
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* documentation. Do not change them.
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*/
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#include <linux/compiler.h>
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#include <linux/atmapi.h>
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#include <linux/atmsap.h>
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#include <linux/atmioc.h>
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#include <linux/types.h>
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/* general ATM constants */
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#define ATM_CELL_SIZE 53 /* ATM cell size incl. header */
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#define ATM_CELL_PAYLOAD 48 /* ATM payload size */
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#define ATM_AAL0_SDU 52 /* AAL0 SDU size */
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#define ATM_MAX_AAL34_PDU 65535 /* maximum AAL3/4 PDU payload */
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#define ATM_AAL5_TRAILER 8 /* AAL5 trailer size */
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#define ATM_MAX_AAL5_PDU 65535 /* maximum AAL5 PDU payload */
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#define ATM_MAX_CDV 9999 /* maximum (default) CDV */
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#define ATM_NOT_RSV_VCI 32 /* first non-reserved VCI value */
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#define ATM_MAX_VPI 255 /* maximum VPI at the UNI */
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#define ATM_MAX_VPI_NNI 4096 /* maximum VPI at the NNI */
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#define ATM_MAX_VCI 65535 /* maximum VCI */
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/* "protcol" values for the socket system call */
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#define ATM_NO_AAL 0 /* AAL not specified */
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#define ATM_AAL0 13 /* "raw" ATM cells */
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#define ATM_AAL1 1 /* AAL1 (CBR) */
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#define ATM_AAL2 2 /* AAL2 (VBR) */
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#define ATM_AAL34 3 /* AAL3/4 (data) */
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#define ATM_AAL5 5 /* AAL5 (data) */
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/*
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* socket option name coding functions
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*
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* Note that __SO_ENCODE and __SO_LEVEL are somewhat a hack since the
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* << 22 only reserves 9 bits for the level. On some architectures
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* SOL_SOCKET is 0xFFFF, so that's a bit of a problem
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*/
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#define __SO_ENCODE(l,n,t) ((((l) & 0x1FF) << 22) | ((n) << 16) | \
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sizeof(t))
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#define __SO_LEVEL_MATCH(c,m) (((c) >> 22) == ((m) & 0x1FF))
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#define __SO_NUMBER(c) (((c) >> 16) & 0x3f)
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#define __SO_SIZE(c) ((c) & 0x3fff)
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/*
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* ATM layer
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*/
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#define SO_SETCLP __SO_ENCODE(SOL_ATM,0,int)
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/* set CLP bit value - TODO */
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#define SO_CIRANGE __SO_ENCODE(SOL_ATM,1,struct atm_cirange)
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/* connection identifier range; socket must be
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bound or connected */
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#define SO_ATMQOS __SO_ENCODE(SOL_ATM,2,struct atm_qos)
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/* Quality of Service setting */
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#define SO_ATMSAP __SO_ENCODE(SOL_ATM,3,struct atm_sap)
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/* Service Access Point */
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#define SO_ATMPVC __SO_ENCODE(SOL_ATM,4,struct sockaddr_atmpvc)
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/* "PVC" address (also for SVCs); get only */
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#define SO_MULTIPOINT __SO_ENCODE(SOL_ATM, 5, int)
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/* make this vc a p2mp */
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/*
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* Note @@@: since the socket layers don't really distinguish the control and
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* the data plane but generally seems to be data plane-centric, any layer is
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* about equally wrong for the SAP. If you have a better idea about this,
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* please speak up ...
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*/
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/* ATM cell header (for AAL0) */
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/* BEGIN_CH */
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#define ATM_HDR_GFC_MASK 0xf0000000
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#define ATM_HDR_GFC_SHIFT 28
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#define ATM_HDR_VPI_MASK 0x0ff00000
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#define ATM_HDR_VPI_SHIFT 20
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#define ATM_HDR_VCI_MASK 0x000ffff0
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#define ATM_HDR_VCI_SHIFT 4
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#define ATM_HDR_PTI_MASK 0x0000000e
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#define ATM_HDR_PTI_SHIFT 1
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#define ATM_HDR_CLP 0x00000001
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/* END_CH */
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/* PTI codings */
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/* BEGIN_PTI */
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#define ATM_PTI_US0 0 /* user data cell, congestion not exp, SDU-type 0 */
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#define ATM_PTI_US1 1 /* user data cell, congestion not exp, SDU-type 1 */
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#define ATM_PTI_UCES0 2 /* user data cell, cong. experienced, SDU-type 0 */
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#define ATM_PTI_UCES1 3 /* user data cell, cong. experienced, SDU-type 1 */
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#define ATM_PTI_SEGF5 4 /* segment OAM F5 flow related cell */
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#define ATM_PTI_E2EF5 5 /* end-to-end OAM F5 flow related cell */
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#define ATM_PTI_RSV_RM 6 /* reserved for traffic control/resource mgmt */
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#define ATM_PTI_RSV 7 /* reserved */
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/* END_PTI */
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/*
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* The following items should stay in linux/atm.h, which should be linked to
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* netatm/atm.h
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*/
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/* Traffic description */
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#define ATM_NONE 0 /* no traffic */
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#define ATM_UBR 1
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#define ATM_CBR 2
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#define ATM_VBR 3
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#define ATM_ABR 4
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#define ATM_ANYCLASS 5 /* compatible with everything */
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#define ATM_MAX_PCR -1 /* maximum available PCR */
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struct atm_trafprm {
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unsigned char traffic_class; /* traffic class (ATM_UBR, ...) */
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int max_pcr; /* maximum PCR in cells per second */
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int pcr; /* desired PCR in cells per second */
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int min_pcr; /* minimum PCR in cells per second */
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int max_cdv; /* maximum CDV in microseconds */
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int max_sdu; /* maximum SDU in bytes */
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/* extra params for ABR */
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unsigned int icr; /* Initial Cell Rate (24-bit) */
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unsigned int tbe; /* Transient Buffer Exposure (24-bit) */
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unsigned int frtt : 24; /* Fixed Round Trip Time (24-bit) */
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unsigned int rif : 4; /* Rate Increment Factor (4-bit) */
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unsigned int rdf : 4; /* Rate Decrease Factor (4-bit) */
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unsigned int nrm_pres :1; /* nrm present bit */
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unsigned int trm_pres :1; /* rm present bit */
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unsigned int adtf_pres :1; /* adtf present bit */
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unsigned int cdf_pres :1; /* cdf present bit*/
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unsigned int nrm :3; /* Max # of Cells for each forward RM cell (3-bit) */
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unsigned int trm :3; /* Time between forward RM cells (3-bit) */
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unsigned int adtf :10; /* ACR Decrease Time Factor (10-bit) */
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unsigned int cdf :3; /* Cutoff Decrease Factor (3-bit) */
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unsigned int spare :9; /* spare bits */
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};
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struct atm_qos {
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struct atm_trafprm txtp; /* parameters in TX direction */
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struct atm_trafprm rxtp __ATM_API_ALIGN;
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/* parameters in RX direction */
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unsigned char aal __ATM_API_ALIGN;
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};
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/* PVC addressing */
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#define ATM_ITF_ANY -1 /* "magic" PVC address values */
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#define ATM_VPI_ANY -1
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#define ATM_VCI_ANY -1
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#define ATM_VPI_UNSPEC -2
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#define ATM_VCI_UNSPEC -2
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struct sockaddr_atmpvc {
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unsigned short sap_family; /* address family, AF_ATMPVC */
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struct { /* PVC address */
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short itf; /* ATM interface */
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short vpi; /* VPI (only 8 bits at UNI) */
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int vci; /* VCI (only 16 bits at UNI) */
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} sap_addr __ATM_API_ALIGN; /* PVC address */
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};
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/* SVC addressing */
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#define ATM_ESA_LEN 20 /* ATM End System Address length */
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#define ATM_E164_LEN 12 /* maximum E.164 number length */
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#define ATM_AFI_DCC 0x39 /* DCC ATM Format */
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#define ATM_AFI_ICD 0x47 /* ICD ATM Format */
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#define ATM_AFI_E164 0x45 /* E.164 ATM Format */
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#define ATM_AFI_LOCAL 0x49 /* Local ATM Format */
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#define ATM_AFI_DCC_GROUP 0xBD /* DCC ATM Group Format */
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#define ATM_AFI_ICD_GROUP 0xC5 /* ICD ATM Group Format */
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#define ATM_AFI_E164_GROUP 0xC3 /* E.164 ATM Group Format */
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#define ATM_AFI_LOCAL_GROUP 0xC7 /* Local ATM Group Format */
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#define ATM_LIJ_NONE 0 /* no leaf-initiated join */
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#define ATM_LIJ 1 /* request joining */
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#define ATM_LIJ_RPJ 2 /* set to root-prompted join */
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#define ATM_LIJ_NJ 3 /* set to network join */
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struct sockaddr_atmsvc {
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unsigned short sas_family; /* address family, AF_ATMSVC */
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struct { /* SVC address */
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unsigned char prv[ATM_ESA_LEN];/* private ATM address */
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char pub[ATM_E164_LEN+1]; /* public address (E.164) */
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/* unused addresses must be bzero'ed */
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char lij_type; /* role in LIJ call; one of ATM_LIJ* */
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__u32 lij_id; /* LIJ call identifier */
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} sas_addr __ATM_API_ALIGN; /* SVC address */
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};
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static __inline__ int atmsvc_addr_in_use(struct sockaddr_atmsvc addr)
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{
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return *addr.sas_addr.prv || *addr.sas_addr.pub;
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}
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static __inline__ int atmpvc_addr_in_use(struct sockaddr_atmpvc addr)
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{
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return addr.sap_addr.itf || addr.sap_addr.vpi || addr.sap_addr.vci;
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}
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/*
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* Some stuff for linux/sockios.h
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*/
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struct atmif_sioc {
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int number;
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int length;
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void __user *arg;
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};
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#ifdef __KERNEL__
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#ifdef CONFIG_COMPAT
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#include <linux/compat.h>
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struct compat_atmif_sioc {
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int number;
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int length;
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compat_uptr_t arg;
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};
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#endif
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#endif
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typedef unsigned short atm_backend_t;
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#endif
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