[PATCH net-next 0/9] atm: remove more dead code

[PATCH net-next 0/9] atm: remove more dead code

[Jakub Kicinski]

Commit 6deb53595092 ("net: remove unused ATM protocols and legacy
ATM device drivers") removed a good chunk of old ATM drivers.
Our goal going forward is to limit the ATM support to PPPoATM
used in ADSL deployments.

A recent burst of AI generated fixes for net/atm/signaling.c and
net/atm/svc.c made me look closer at the remaining code. PPPoATM runs
over permanent virtual circuits (PF_ATMPVC) with a statically
configured VPI/VCI. We can drop switched virtual circuits (SVCs)
and user-space signaling (atmsigd) support. While digging around
I noticed a few more obviously dead pieces of code.

Annoyingly, I have applied one "fix" to QoS config which will
now make net conflict with this series :/

Jakub Kicinski (9):
  atm: remove AAL3/4 transport support
  atm: remove the unused send_oam / push_oam callbacks
  atm: remove dead SONET PHY ioctls
  atm: remove the local ATM (NSAP) address registry
  atm: remove SVC socket support and the signaling daemon interface
  atm: remove the unused change_qos device operation
  atm: remove the unused pre_send and send_bh device operations
  atm: remove unused ATM PHY operations
  atm: remove orphaned uAPI for deleted drivers, protocols and SVCs

 net/atm/Makefile                  |   2 +-
 include/linux/atm_tcp.h           |  24 --
 include/linux/atmdev.h            |  70 +--
 include/uapi/linux/atm_eni.h      |  24 --
 include/uapi/linux/atm_he.h       |  21 -
 include/uapi/linux/atm_idt77105.h |  29 --
 include/uapi/linux/atm_nicstar.h  |  54 ---
 include/uapi/linux/atm_tcp.h      |  62 ---
 include/uapi/linux/atm_zatm.h     |  47 --
 include/uapi/linux/atmarp.h       |  42 --
 include/uapi/linux/atmclip.h      |  22 -
 include/uapi/linux/atmdev.h       |  18 -
 include/uapi/linux/atmlec.h       |  92 ----
 include/uapi/linux/atmmpc.h       | 127 ------
 include/uapi/linux/atmsvc.h       |  56 ---
 net/atm/addr.h                    |  21 -
 net/atm/common.h                  |   5 -
 net/atm/protocols.h               |   1 -
 net/atm/signaling.h               |  31 --
 drivers/atm/solos-pci.c           |   4 -
 net/atm/addr.c                    | 162 -------
 net/atm/atm_sysfs.c               |  25 --
 net/atm/br2684.c                  |   3 +-
 net/atm/common.c                  |  73 +---
 net/atm/ioctl.c                   |  58 ---
 net/atm/pppoatm.c                 |   3 +-
 net/atm/proc.c                    |  56 ---
 net/atm/raw.c                     |  21 +-
 net/atm/resources.c               |  54 ---
 net/atm/signaling.c               | 297 -------------
 net/atm/svc.c                     | 695 ------------------------------
 31 files changed, 14 insertions(+), 2185 deletions(-)
 delete mode 100644 include/linux/atm_tcp.h
 delete mode 100644 include/uapi/linux/atm_eni.h
 delete mode 100644 include/uapi/linux/atm_he.h
 delete mode 100644 include/uapi/linux/atm_idt77105.h
 delete mode 100644 include/uapi/linux/atm_nicstar.h
 delete mode 100644 include/uapi/linux/atm_tcp.h
 delete mode 100644 include/uapi/linux/atm_zatm.h
 delete mode 100644 include/uapi/linux/atmarp.h
 delete mode 100644 include/uapi/linux/atmclip.h
 delete mode 100644 include/uapi/linux/atmlec.h
 delete mode 100644 include/uapi/linux/atmmpc.h
 delete mode 100644 include/uapi/linux/atmsvc.h
 delete mode 100644 net/atm/addr.h
 delete mode 100644 net/atm/signaling.h
 delete mode 100644 net/atm/addr.c
 delete mode 100644 net/atm/signaling.c
 delete mode 100644 net/atm/svc.c

-- 
2.54.0

[PATCH net-next 1/9] atm: remove AAL3/4 transport support

[Jakub Kicinski]

AAL3/4 is an obsolete connection-oriented ATM adaptation layer that has
seen no real use since the SMDS-era hardware it was designed for (90s?).
We are only maintaining ATM support in-tree to keep PPPoATM running,
and PPPoATM runs over AAL5.

Drop the "raw" AAL3/4 transport (atm_init_aal34()) and the ATM_AAL34
cases in the connect and traffic-parameter paths. A vcc_connect() with
qos.aal == ATM_AAL34 now fails with -EPROTOTYPE.

uAPI cleanup is performed later, separately.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
 net/atm/protocols.h |  1 -
 net/atm/common.c    |  7 -------
 net/atm/raw.c       | 12 ------------
 3 files changed, 20 deletions(-)

diff --git a/net/atm/protocols.h b/net/atm/protocols.h
index 18d4d008bac3..30158efb5e1a 100644
--- a/net/atm/protocols.h
+++ b/net/atm/protocols.h
@@ -8,7 +8,6 @@
 #define NET_ATM_PROTOCOLS_H
 
 int atm_init_aal0(struct atm_vcc *vcc);	/* "raw" AAL0 */
-int atm_init_aal34(struct atm_vcc *vcc);/* "raw" AAL3/4 transport */
 int atm_init_aal5(struct atm_vcc *vcc);	/* "raw" AAL5 transport */
 
 #endif
diff --git a/net/atm/common.c b/net/atm/common.c
index 60132de4eebe..913f7e32ce41 100644
--- a/net/atm/common.c
+++ b/net/atm/common.c
@@ -293,9 +293,6 @@ static int adjust_tp(struct atm_trafprm *tp, unsigned char aal)
 	case ATM_AAL0:
 		max_sdu = ATM_CELL_SIZE-1;
 		break;
-	case ATM_AAL34:
-		max_sdu = ATM_MAX_AAL34_PDU;
-		break;
 	default:
 		pr_warn("AAL problems ... (%d)\n", aal);
 		fallthrough;
@@ -411,10 +408,6 @@ static int __vcc_connect(struct atm_vcc *vcc, struct atm_dev *dev, short vpi,
 		error = atm_init_aal0(vcc);
 		vcc->stats = &dev->stats.aal0;
 		break;
-	case ATM_AAL34:
-		error = atm_init_aal34(vcc);
-		vcc->stats = &dev->stats.aal34;
-		break;
 	case ATM_NO_AAL:
 		/* ATM_AAL5 is also used in the "0 for default" case */
 		vcc->qos.aal = ATM_AAL5;
diff --git a/net/atm/raw.c b/net/atm/raw.c
index 1e6511ec842c..0d36aeb3671b 100644
--- a/net/atm/raw.c
+++ b/net/atm/raw.c
@@ -68,18 +68,6 @@ int atm_init_aal0(struct atm_vcc *vcc)
 	return 0;
 }
 
-int atm_init_aal34(struct atm_vcc *vcc)
-{
-	vcc->push = atm_push_raw;
-	vcc->pop = atm_pop_raw;
-	vcc->push_oam = NULL;
-	if (vcc->dev->ops->send_bh)
-		vcc->send = vcc->dev->ops->send_bh;
-	else
-		vcc->send = vcc->dev->ops->send;
-	return 0;
-}
-
 int atm_init_aal5(struct atm_vcc *vcc)
 {
 	vcc->push = atm_push_raw;
-- 
2.54.0

[PATCH net-next 2/9] atm: remove the unused send_oam / push_oam callbacks

[Jakub Kicinski]

The atmdev_ops::send_oam device operation and the atm_vcc::push_oam
callback were the kernel's interface for raw F4/F5 OAM cell exchange.
Nothing assigns them a non-NULL value and nothing ever invokes them:
the core only ever initialises push_oam to NULL (in vcc_create() and the
AAL init helpers) and the Solos driver only lists send_oam = NULL for
documentation. The drivers that actually drove OAM through these hooks
were removed along with the legacy ATM adapters.

Drop both callbacks and the NULL initialisers.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
 include/linux/atmdev.h  | 8 --------
 drivers/atm/solos-pci.c | 1 -
 net/atm/common.c        | 1 -
 net/atm/raw.c           | 2 --
 4 files changed, 12 deletions(-)

diff --git a/include/linux/atmdev.h b/include/linux/atmdev.h
index 82a32526df64..71c5bf6950e3 100644
--- a/include/linux/atmdev.h
+++ b/include/linux/atmdev.h
@@ -104,7 +104,6 @@ struct atm_vcc {
 	void (*release_cb)(struct atm_vcc *vcc); /* release_sock callback */
 	void (*push)(struct atm_vcc *vcc,struct sk_buff *skb);
 	void (*pop)(struct atm_vcc *vcc,struct sk_buff *skb); /* optional */
-	int (*push_oam)(struct atm_vcc *vcc,void *cell);
 	int (*send)(struct atm_vcc *vcc,struct sk_buff *skb);
 	void		*dev_data;	/* per-device data */
 	void		*proto_data;	/* per-protocol data */
@@ -170,12 +169,6 @@ struct atm_dev {
 	struct list_head dev_list;	/* linkage */
 };
 
- 
-/* OF: send_Oam Flags */
-
-#define ATM_OF_IMMED  1		/* Attempt immediate delivery */
-#define ATM_OF_INRATE 2		/* Attempt in-rate delivery */
-
 struct atmdev_ops { /* only send is required */
 	void (*dev_close)(struct atm_dev *dev);
 	int (*open)(struct atm_vcc *vcc);
@@ -188,7 +181,6 @@ struct atmdev_ops { /* only send is required */
 	int (*pre_send)(struct atm_vcc *vcc, struct sk_buff *skb);
 	int (*send)(struct atm_vcc *vcc,struct sk_buff *skb);
 	int (*send_bh)(struct atm_vcc *vcc, struct sk_buff *skb);
-	int (*send_oam)(struct atm_vcc *vcc,void *cell,int flags);
 	void (*phy_put)(struct atm_dev *dev,unsigned char value,
 	    unsigned long addr);
 	unsigned char (*phy_get)(struct atm_dev *dev,unsigned long addr);
diff --git a/drivers/atm/solos-pci.c b/drivers/atm/solos-pci.c
index bcb1353877e4..4ad170a858ee 100644
--- a/drivers/atm/solos-pci.c
+++ b/drivers/atm/solos-pci.c
@@ -1180,7 +1180,6 @@ static const struct atmdev_ops fpga_ops = {
 	.close =	pclose,
 	.ioctl =	NULL,
 	.send =		psend,
-	.send_oam =	NULL,
 	.phy_put =	NULL,
 	.phy_get =	NULL,
 	.change_qos =	NULL,
diff --git a/net/atm/common.c b/net/atm/common.c
index 913f7e32ce41..c6e87fc9bbfc 100644
--- a/net/atm/common.c
+++ b/net/atm/common.c
@@ -163,7 +163,6 @@ int vcc_create(struct net *net, struct socket *sock, int protocol, int family, i
 	vcc->push = NULL;
 	vcc->pop = NULL;
 	vcc->owner = NULL;
-	vcc->push_oam = NULL;
 	vcc->release_cb = NULL;
 	vcc->vpi = vcc->vci = 0; /* no VCI/VPI yet */
 	vcc->atm_options = vcc->aal_options = 0;
diff --git a/net/atm/raw.c b/net/atm/raw.c
index 0d36aeb3671b..1d6ac7b0c4e5 100644
--- a/net/atm/raw.c
+++ b/net/atm/raw.c
@@ -63,7 +63,6 @@ int atm_init_aal0(struct atm_vcc *vcc)
 {
 	vcc->push = atm_push_raw;
 	vcc->pop = atm_pop_raw;
-	vcc->push_oam = NULL;
 	vcc->send = atm_send_aal0;
 	return 0;
 }
@@ -72,7 +71,6 @@ int atm_init_aal5(struct atm_vcc *vcc)
 {
 	vcc->push = atm_push_raw;
 	vcc->pop = atm_pop_raw;
-	vcc->push_oam = NULL;
 	if (vcc->dev->ops->send_bh)
 		vcc->send = vcc->dev->ops->send_bh;
 	else
-- 
2.54.0

[PATCH net-next 3/9] atm: remove dead SONET PHY ioctls

[Jakub Kicinski]

The SONET_* ioctls are SONET/SDH PHY controls that atm_dev_ioctl() and
the compat path only ever forwarded to the driver's ->ioctl() handler.
The PHY drivers that implemented them (the S/UNI library and the framers
on the removed PCI/SBUS adapters) are gone, and neither surviving driver
services them: solos-pci has no ->ioctl, and usbatm handles only
ATM_QUERYLOOP. They now uniformly return an error regardless.

Drop the SONET compat passthrough and the SONET cases in atm_dev_ioctl(),
along with the now-unused linux/sonet.h includes. The SONET_* uAPI
definitions are untouched.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
 net/atm/ioctl.c     | 13 -------------
 net/atm/resources.c |  5 -----
 2 files changed, 18 deletions(-)

diff --git a/net/atm/ioctl.c b/net/atm/ioctl.c
index 0f3f9ad8301f..4f2d185bf2f0 100644
--- a/net/atm/ioctl.c
+++ b/net/atm/ioctl.c
@@ -13,7 +13,6 @@
 #include <linux/atmdev.h>
 #include <linux/atmarp.h>	/* manifest constants */
 #include <linux/capability.h>
-#include <linux/sonet.h>	/* for ioctls */
 #include <linux/atmsvc.h>
 #include <linux/mutex.h>
 #include <asm/ioctls.h>
@@ -290,18 +289,6 @@ static int do_atm_ioctl(struct socket *sock, unsigned int cmd32,
 	int i;
 	unsigned int cmd = 0;
 
-	switch (cmd32) {
-	case SONET_GETSTAT:
-	case SONET_GETSTATZ:
-	case SONET_GETDIAG:
-	case SONET_SETDIAG:
-	case SONET_CLRDIAG:
-	case SONET_SETFRAMING:
-	case SONET_GETFRAMING:
-	case SONET_GETFRSENSE:
-		return do_atmif_sioc(sock, cmd32, arg);
-	}
-
 	for (i = 0; i < NR_ATM_IOCTL; i++) {
 		if (cmd32 == atm_ioctl_map[i].cmd32) {
 			cmd = atm_ioctl_map[i].cmd;
diff --git a/net/atm/resources.c b/net/atm/resources.c
index 939452a610c0..7aac25e917b4 100644
--- a/net/atm/resources.c
+++ b/net/atm/resources.c
@@ -13,7 +13,6 @@
 #include <linux/ctype.h>
 #include <linux/string.h>
 #include <linux/atmdev.h>
-#include <linux/sonet.h>
 #include <linux/kernel.h> /* for barrier */
 #include <linux/module.h>
 #include <linux/bitops.h>
@@ -361,10 +360,6 @@ int atm_dev_ioctl(unsigned int cmd, void __user *buf, int __user *sioc_len,
 		}
 		fallthrough;
 	case ATM_SETCIRANGE:
-	case SONET_GETSTATZ:
-	case SONET_SETDIAG:
-	case SONET_CLRDIAG:
-	case SONET_SETFRAMING:
 		if (!capable(CAP_NET_ADMIN)) {
 			error = -EPERM;
 			goto done;
-- 
2.54.0

[PATCH net-next 4/9] atm: remove the local ATM (NSAP) address registry

[Jakub Kicinski]

net/atm/addr.c maintained the per-device lists of local NSAP addresses
(dev->local) and ILMI-learned LECS addresses (dev->lecs). These exist
solely to serve SVC signaling: the lists are populated through the
ATM_{ADD,DEL,RST}ADDR / ATM_{ADD,DEL,GET}LECSADDR ioctls used by the
atmsigd / ILMI daemons, and consumed when registering addresses with the
signaling daemon. The LECS list belonged to LAN Emulation, which has
been removed.

With no SVC users in a DSL-only configuration these lists are always
empty, so drop the registry entirely:

 - remove the ADDR/LECSADDR/RSTADDR ioctls
 - drop the now-always-empty "atmaddress" sysfs attribute
 - remove the dev->local / dev->lecs lists, structs and enums
 - delete net/atm/addr.c and net/atm/addr.h

The device ESI ("MAC" address) and its ATM_{G,S}ETESI ioctls and
"address" sysfs attribute are retained - the USB DSL modems populate
the ESI.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
 net/atm/Makefile       |   2 +-
 include/linux/atmdev.h |   9 ---
 net/atm/addr.h         |  21 ------
 net/atm/addr.c         | 162 -----------------------------------------
 net/atm/atm_sysfs.c    |  25 -------
 net/atm/common.c       |   1 -
 net/atm/ioctl.c        |  12 ---
 net/atm/resources.c    |  48 ------------
 net/atm/svc.c          |   1 -
 9 files changed, 1 insertion(+), 280 deletions(-)
 delete mode 100644 net/atm/addr.h
 delete mode 100644 net/atm/addr.c

diff --git a/net/atm/Makefile b/net/atm/Makefile
index 484a1b1552cc..5ed48d50df35 100644
--- a/net/atm/Makefile
+++ b/net/atm/Makefile
@@ -3,7 +3,7 @@
 # Makefile for the ATM Protocol Families.
 #
 
-atm-y		:= addr.o pvc.o signaling.o svc.o ioctl.o common.o atm_misc.o raw.o resources.o atm_sysfs.o
+atm-y		:= pvc.o signaling.o svc.o ioctl.o common.o atm_misc.o raw.o resources.o atm_sysfs.o
 
 obj-$(CONFIG_ATM) += atm.o
 obj-$(CONFIG_ATM_BR2684) += br2684.o
diff --git a/include/linux/atmdev.h b/include/linux/atmdev.h
index 71c5bf6950e3..7abbd23fada6 100644
--- a/include/linux/atmdev.h
+++ b/include/linux/atmdev.h
@@ -136,13 +136,6 @@ static inline struct sock *sk_atm(struct atm_vcc *vcc)
 	return (struct sock *)vcc;
 }
 
-struct atm_dev_addr {
-	struct sockaddr_atmsvc addr;	/* ATM address */
-	struct list_head entry;		/* next address */
-};
-
-enum atm_addr_type_t { ATM_ADDR_LOCAL, ATM_ADDR_LECS };
-
 struct atm_dev {
 	const struct atmdev_ops *ops;	/* device operations; NULL if unused */
 	const struct atmphy_ops *phy;	/* PHY operations, may be undefined */
@@ -152,8 +145,6 @@ struct atm_dev {
 	void		*dev_data;	/* per-device data */
 	void		*phy_data;	/* private PHY data */
 	unsigned long	flags;		/* device flags (ATM_DF_*) */
-	struct list_head local;		/* local ATM addresses */
-	struct list_head lecs;		/* LECS ATM addresses learned via ILMI */
 	unsigned char	esi[ESI_LEN];	/* ESI ("MAC" addr) */
 	struct atm_cirange ci_range;	/* VPI/VCI range */
 	struct k_atm_dev_stats stats;	/* statistics */
diff --git a/net/atm/addr.h b/net/atm/addr.h
deleted file mode 100644
index da3f848411a0..000000000000
--- a/net/atm/addr.h
+++ /dev/null
@@ -1,21 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/* net/atm/addr.h - Local ATM address registry */
-
-/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
-
-
-#ifndef NET_ATM_ADDR_H
-#define NET_ATM_ADDR_H
-
-#include <linux/atm.h>
-#include <linux/atmdev.h>
-
-void atm_reset_addr(struct atm_dev *dev, enum atm_addr_type_t type);
-int atm_add_addr(struct atm_dev *dev, const struct sockaddr_atmsvc *addr,
-		 enum atm_addr_type_t type);
-int atm_del_addr(struct atm_dev *dev, const struct sockaddr_atmsvc *addr,
-		 enum atm_addr_type_t type);
-int atm_get_addr(struct atm_dev *dev, struct sockaddr_atmsvc __user *buf,
-		 size_t size, enum atm_addr_type_t type);
-
-#endif
diff --git a/net/atm/addr.c b/net/atm/addr.c
deleted file mode 100644
index 938f360ae230..000000000000
--- a/net/atm/addr.c
+++ /dev/null
@@ -1,162 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/* net/atm/addr.c - Local ATM address registry */
-
-/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
-
-#include <linux/atm.h>
-#include <linux/atmdev.h>
-#include <linux/slab.h>
-#include <linux/uaccess.h>
-
-#include "signaling.h"
-#include "addr.h"
-
-static int check_addr(const struct sockaddr_atmsvc *addr)
-{
-	int i;
-
-	if (addr->sas_family != AF_ATMSVC)
-		return -EAFNOSUPPORT;
-	if (!*addr->sas_addr.pub)
-		return *addr->sas_addr.prv ? 0 : -EINVAL;
-	for (i = 1; i < ATM_E164_LEN + 1; i++)	/* make sure it's \0-terminated */
-		if (!addr->sas_addr.pub[i])
-			return 0;
-	return -EINVAL;
-}
-
-static int identical(const struct sockaddr_atmsvc *a, const struct sockaddr_atmsvc *b)
-{
-	if (*a->sas_addr.prv)
-		if (memcmp(a->sas_addr.prv, b->sas_addr.prv, ATM_ESA_LEN))
-			return 0;
-	if (!*a->sas_addr.pub)
-		return !*b->sas_addr.pub;
-	if (!*b->sas_addr.pub)
-		return 0;
-	return !strcmp(a->sas_addr.pub, b->sas_addr.pub);
-}
-
-static void notify_sigd(const struct atm_dev *dev)
-{
-	struct sockaddr_atmpvc pvc;
-
-	pvc.sap_addr.itf = dev->number;
-	sigd_enq(NULL, as_itf_notify, NULL, &pvc, NULL);
-}
-
-void atm_reset_addr(struct atm_dev *dev, enum atm_addr_type_t atype)
-{
-	unsigned long flags;
-	struct atm_dev_addr *this, *p;
-	struct list_head *head;
-
-	spin_lock_irqsave(&dev->lock, flags);
-	if (atype == ATM_ADDR_LECS)
-		head = &dev->lecs;
-	else
-		head = &dev->local;
-	list_for_each_entry_safe(this, p, head, entry) {
-		list_del(&this->entry);
-		kfree(this);
-	}
-	spin_unlock_irqrestore(&dev->lock, flags);
-	if (head == &dev->local)
-		notify_sigd(dev);
-}
-
-int atm_add_addr(struct atm_dev *dev, const struct sockaddr_atmsvc *addr,
-		 enum atm_addr_type_t atype)
-{
-	unsigned long flags;
-	struct atm_dev_addr *this;
-	struct list_head *head;
-	int error;
-
-	error = check_addr(addr);
-	if (error)
-		return error;
-	spin_lock_irqsave(&dev->lock, flags);
-	if (atype == ATM_ADDR_LECS)
-		head = &dev->lecs;
-	else
-		head = &dev->local;
-	list_for_each_entry(this, head, entry) {
-		if (identical(&this->addr, addr)) {
-			spin_unlock_irqrestore(&dev->lock, flags);
-			return -EEXIST;
-		}
-	}
-	this = kmalloc_obj(struct atm_dev_addr, GFP_ATOMIC);
-	if (!this) {
-		spin_unlock_irqrestore(&dev->lock, flags);
-		return -ENOMEM;
-	}
-	this->addr = *addr;
-	list_add(&this->entry, head);
-	spin_unlock_irqrestore(&dev->lock, flags);
-	if (head == &dev->local)
-		notify_sigd(dev);
-	return 0;
-}
-
-int atm_del_addr(struct atm_dev *dev, const struct sockaddr_atmsvc *addr,
-		 enum atm_addr_type_t atype)
-{
-	unsigned long flags;
-	struct atm_dev_addr *this;
-	struct list_head *head;
-	int error;
-
-	error = check_addr(addr);
-	if (error)
-		return error;
-	spin_lock_irqsave(&dev->lock, flags);
-	if (atype == ATM_ADDR_LECS)
-		head = &dev->lecs;
-	else
-		head = &dev->local;
-	list_for_each_entry(this, head, entry) {
-		if (identical(&this->addr, addr)) {
-			list_del(&this->entry);
-			spin_unlock_irqrestore(&dev->lock, flags);
-			kfree(this);
-			if (head == &dev->local)
-				notify_sigd(dev);
-			return 0;
-		}
-	}
-	spin_unlock_irqrestore(&dev->lock, flags);
-	return -ENOENT;
-}
-
-int atm_get_addr(struct atm_dev *dev, struct sockaddr_atmsvc __user * buf,
-		 size_t size, enum atm_addr_type_t atype)
-{
-	unsigned long flags;
-	struct atm_dev_addr *this;
-	struct list_head *head;
-	int total = 0, error;
-	struct sockaddr_atmsvc *tmp_buf, *tmp_bufp;
-
-	spin_lock_irqsave(&dev->lock, flags);
-	if (atype == ATM_ADDR_LECS)
-		head = &dev->lecs;
-	else
-		head = &dev->local;
-	list_for_each_entry(this, head, entry)
-	    total += sizeof(struct sockaddr_atmsvc);
-	tmp_buf = tmp_bufp = kmalloc(total, GFP_ATOMIC);
-	if (!tmp_buf) {
-		spin_unlock_irqrestore(&dev->lock, flags);
-		return -ENOMEM;
-	}
-	list_for_each_entry(this, head, entry)
-	    memcpy(tmp_bufp++, &this->addr, sizeof(struct sockaddr_atmsvc));
-	spin_unlock_irqrestore(&dev->lock, flags);
-	error = total > size ? -E2BIG : total;
-	if (copy_to_user(buf, tmp_buf, total < size ? total : size))
-		error = -EFAULT;
-	kfree(tmp_buf);
-	return error;
-}
diff --git a/net/atm/atm_sysfs.c b/net/atm/atm_sysfs.c
index 54e7fb1a4ee5..0676a9c333ff 100644
--- a/net/atm/atm_sysfs.c
+++ b/net/atm/atm_sysfs.c
@@ -27,29 +27,6 @@ static ssize_t address_show(struct device *cdev,
 	return scnprintf(buf, PAGE_SIZE, "%pM\n", adev->esi);
 }
 
-static ssize_t atmaddress_show(struct device *cdev,
-			       struct device_attribute *attr, char *buf)
-{
-	unsigned long flags;
-	struct atm_dev *adev = to_atm_dev(cdev);
-	struct atm_dev_addr *aaddr;
-	int count = 0;
-
-	spin_lock_irqsave(&adev->lock, flags);
-	list_for_each_entry(aaddr, &adev->local, entry) {
-		count += scnprintf(buf + count, PAGE_SIZE - count,
-				   "%1phN.%2phN.%10phN.%6phN.%1phN\n",
-				   &aaddr->addr.sas_addr.prv[0],
-				   &aaddr->addr.sas_addr.prv[1],
-				   &aaddr->addr.sas_addr.prv[3],
-				   &aaddr->addr.sas_addr.prv[13],
-				   &aaddr->addr.sas_addr.prv[19]);
-	}
-	spin_unlock_irqrestore(&adev->lock, flags);
-
-	return count;
-}
-
 static ssize_t atmindex_show(struct device *cdev,
 			     struct device_attribute *attr, char *buf)
 {
@@ -91,14 +68,12 @@ static ssize_t link_rate_show(struct device *cdev,
 }
 
 static DEVICE_ATTR_RO(address);
-static DEVICE_ATTR_RO(atmaddress);
 static DEVICE_ATTR_RO(atmindex);
 static DEVICE_ATTR_RO(carrier);
 static DEVICE_ATTR_RO(type);
 static DEVICE_ATTR_RO(link_rate);
 
 static struct device_attribute *atm_attrs[] = {
-	&dev_attr_atmaddress,
 	&dev_attr_address,
 	&dev_attr_atmindex,
 	&dev_attr_carrier,
diff --git a/net/atm/common.c b/net/atm/common.c
index c6e87fc9bbfc..7d5b7c39b80b 100644
--- a/net/atm/common.c
+++ b/net/atm/common.c
@@ -30,7 +30,6 @@
 #include "resources.h"		/* atm_find_dev */
 #include "common.h"		/* prototypes */
 #include "protocols.h"		/* atm_init_<transport> */
-#include "addr.h"		/* address registry */
 #include "signaling.h"		/* for WAITING and sigd_attach */
 
 struct hlist_head vcc_hash[VCC_HTABLE_SIZE];
diff --git a/net/atm/ioctl.c b/net/atm/ioctl.c
index 4f2d185bf2f0..97f20cd051ed 100644
--- a/net/atm/ioctl.c
+++ b/net/atm/ioctl.c
@@ -220,10 +220,6 @@ int vcc_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
 #define ATM_GETNAMES32    _IOW('a', ATMIOC_ITF+3, struct compat_atm_iobuf)
 #define ATM_GETTYPE32     _IOW('a', ATMIOC_ITF+4, struct compat_atmif_sioc)
 #define ATM_GETESI32	  _IOW('a', ATMIOC_ITF+5, struct compat_atmif_sioc)
-#define ATM_GETADDR32	  _IOW('a', ATMIOC_ITF+6, struct compat_atmif_sioc)
-#define ATM_RSTADDR32	  _IOW('a', ATMIOC_ITF+7, struct compat_atmif_sioc)
-#define ATM_ADDADDR32	  _IOW('a', ATMIOC_ITF+8, struct compat_atmif_sioc)
-#define ATM_DELADDR32	  _IOW('a', ATMIOC_ITF+9, struct compat_atmif_sioc)
 #define ATM_GETCIRANGE32  _IOW('a', ATMIOC_ITF+10, struct compat_atmif_sioc)
 #define ATM_SETCIRANGE32  _IOW('a', ATMIOC_ITF+11, struct compat_atmif_sioc)
 #define ATM_SETESI32      _IOW('a', ATMIOC_ITF+12, struct compat_atmif_sioc)
@@ -242,10 +238,6 @@ static struct {
 	{ ATM_GETNAMES32,    ATM_GETNAMES },
 	{ ATM_GETTYPE32,     ATM_GETTYPE },
 	{ ATM_GETESI32,	     ATM_GETESI },
-	{ ATM_GETADDR32,     ATM_GETADDR },
-	{ ATM_RSTADDR32,     ATM_RSTADDR },
-	{ ATM_ADDADDR32,     ATM_ADDADDR },
-	{ ATM_DELADDR32,     ATM_DELADDR },
 	{ ATM_GETCIRANGE32,  ATM_GETCIRANGE },
 	{ ATM_SETCIRANGE32,  ATM_SETCIRANGE },
 	{ ATM_SETESI32,	     ATM_SETESI },
@@ -305,10 +297,6 @@ static int do_atm_ioctl(struct socket *sock, unsigned int cmd32,
 	case ATM_GETLINKRATE:
 	case ATM_GETTYPE:
 	case ATM_GETESI:
-	case ATM_GETADDR:
-	case ATM_RSTADDR:
-	case ATM_ADDADDR:
-	case ATM_DELADDR:
 	case ATM_GETCIRANGE:
 	case ATM_SETCIRANGE:
 	case ATM_SETESI:
diff --git a/net/atm/resources.c b/net/atm/resources.c
index 7aac25e917b4..a08f65aacf75 100644
--- a/net/atm/resources.c
+++ b/net/atm/resources.c
@@ -25,7 +25,6 @@
 
 #include "common.h"
 #include "resources.h"
-#include "addr.h"
 
 
 LIST_HEAD(atm_devs);
@@ -42,8 +41,6 @@ static struct atm_dev *__alloc_atm_dev(const char *type)
 	dev->signal = ATM_PHY_SIG_UNKNOWN;
 	dev->link_rate = ATM_OC3_PCR;
 	spin_lock_init(&dev->lock);
-	INIT_LIST_HEAD(&dev->local);
-	INIT_LIST_HEAD(&dev->lecs);
 
 	return dev;
 }
@@ -306,51 +303,6 @@ int atm_dev_ioctl(unsigned int cmd, void __user *buf, int __user *sioc_len,
 			goto done;
 		}
 		break;
-	case ATM_RSTADDR:
-		if (!capable(CAP_NET_ADMIN)) {
-			error = -EPERM;
-			goto done;
-		}
-		atm_reset_addr(dev, ATM_ADDR_LOCAL);
-		break;
-	case ATM_ADDADDR:
-	case ATM_DELADDR:
-	case ATM_ADDLECSADDR:
-	case ATM_DELLECSADDR:
-	{
-		struct sockaddr_atmsvc addr;
-
-		if (!capable(CAP_NET_ADMIN)) {
-			error = -EPERM;
-			goto done;
-		}
-
-		if (copy_from_user(&addr, buf, sizeof(addr))) {
-			error = -EFAULT;
-			goto done;
-		}
-		if (cmd == ATM_ADDADDR || cmd == ATM_ADDLECSADDR)
-			error = atm_add_addr(dev, &addr,
-					     (cmd == ATM_ADDADDR ?
-					      ATM_ADDR_LOCAL : ATM_ADDR_LECS));
-		else
-			error = atm_del_addr(dev, &addr,
-					     (cmd == ATM_DELADDR ?
-					      ATM_ADDR_LOCAL : ATM_ADDR_LECS));
-		goto done;
-	}
-	case ATM_GETADDR:
-	case ATM_GETLECSADDR:
-		error = atm_get_addr(dev, buf, len,
-				     (cmd == ATM_GETADDR ?
-				      ATM_ADDR_LOCAL : ATM_ADDR_LECS));
-		if (error < 0)
-			goto done;
-		size = error;
-		/* may return 0, but later on size == 0 means "don't
-		   write the length" */
-		error = put_user(size, sioc_len) ? -EFAULT : 0;
-		goto done;
 	case ATM_SETLOOP:
 		if (__ATM_LM_XTRMT((int) (unsigned long) buf) &&
 		    __ATM_LM_XTLOC((int) (unsigned long) buf) >
diff --git a/net/atm/svc.c b/net/atm/svc.c
index 7c5559f50a99..270e95154a2b 100644
--- a/net/atm/svc.c
+++ b/net/atm/svc.c
@@ -27,7 +27,6 @@
 #include "resources.h"
 #include "common.h"		/* common for PVCs and SVCs */
 #include "signaling.h"
-#include "addr.h"
 
 #ifdef CONFIG_COMPAT
 /* It actually takes struct sockaddr_atmsvc, not struct atm_iobuf */
-- 
2.54.0

[PATCH net-next 5/9] atm: remove SVC socket support and the signaling daemon interface

[Jakub Kicinski]

ATM switched virtual circuits (SVCs) are set up and torn down by a
user-space signaling daemon (atmsigd) which the kernel talks to over
a dedicated "sigd" socket: the kernel marshals Q.2931-style requests
(as_connect, as_listen, as_accept, as_close, ...) to the daemon and
applies the results to PF_ATMSVC sockets. This is the machinery behind
classical SVC use and was the foundation for LANE / MPOA, all of which
have been removed.

DSL deployments do not use any of this. PPPoATM and BR2684 run over
permanent virtual circuits (PF_ATMPVC) with a statically configured
VPI/VCI; no atmsigd, no Q.2931. Neither remaining ATM driver
(solos-pci, the USB DSL modems) is reachable through the SVC path.

Remove the SVC socket family and the signaling interface:

 - delete net/atm/svc.c, net/atm/signaling.c and signaling.h
 - drop atmsvc_init()/atmsvc_exit() and the PF_ATMSVC registration and
   module alias
 - drop the ATMSIGD_CTRL ioctl (sigd_attach) and the /proc/net/atm/svc
   file
 - fold the SVC branch out of atm_change_qos(); all sockets are PVCs now

The obsolete ATM_SETSC ioctl stub is left in place (it already just
warns and returns 0), as is the struct atm_vcc SVC bookkeeping shared
with the queueing layer.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
 net/atm/Makefile       |   2 +-
 include/linux/atmdev.h |  38 +--
 net/atm/common.h       |   5 -
 net/atm/signaling.h    |  31 --
 net/atm/br2684.c       |   3 +-
 net/atm/common.c       |  35 +--
 net/atm/ioctl.c        |  32 --
 net/atm/pppoatm.c      |   3 +-
 net/atm/proc.c         |  56 ----
 net/atm/resources.c    |   1 -
 net/atm/signaling.c    | 297 ------------------
 net/atm/svc.c          | 694 -----------------------------------------
 12 files changed, 12 insertions(+), 1185 deletions(-)
 delete mode 100644 net/atm/signaling.h
 delete mode 100644 net/atm/signaling.c
 delete mode 100644 net/atm/svc.c

diff --git a/net/atm/Makefile b/net/atm/Makefile
index 5ed48d50df35..0a14ea7d4683 100644
--- a/net/atm/Makefile
+++ b/net/atm/Makefile
@@ -3,7 +3,7 @@
 # Makefile for the ATM Protocol Families.
 #
 
-atm-y		:= pvc.o signaling.o svc.o ioctl.o common.o atm_misc.o raw.o resources.o atm_sysfs.o
+atm-y		:= pvc.o ioctl.o common.o atm_misc.o raw.o resources.o atm_sysfs.o
 
 obj-$(CONFIG_ATM) += atm.o
 obj-$(CONFIG_ATM_BR2684) += br2684.o
diff --git a/include/linux/atmdev.h b/include/linux/atmdev.h
index 7abbd23fada6..59477676063c 100644
--- a/include/linux/atmdev.h
+++ b/include/linux/atmdev.h
@@ -51,33 +51,11 @@ enum {
 				   driver, cleared by anybody. */
 	ATM_VF_PARTIAL,		/* resources are bound to PVC (partial PVC
 				   setup), controlled by socket layer */
-	ATM_VF_REGIS,		/* registered with demon, controlled by SVC
-				   socket layer */
-	ATM_VF_BOUND,		/* local SAP is set, controlled by SVC socket
-				   layer */
-	ATM_VF_RELEASED,	/* demon has indicated/requested release,
-				   controlled by SVC socket layer */
 	ATM_VF_HASQOS,		/* QOS parameters have been set */
-	ATM_VF_LISTEN,		/* socket is used for listening */
-	ATM_VF_META,		/* SVC socket isn't used for normal data
-				   traffic and doesn't depend on signaling
-				   to be available */
-	ATM_VF_SESSION,		/* VCC is p2mp session control descriptor */
-	ATM_VF_HASSAP,		/* SAP has been set */
-	ATM_VF_CLOSE,		/* asynchronous close - treat like VF_RELEASED*/
-	ATM_VF_WAITING,		/* waiting for reply from sigd */
-	ATM_VF_IS_CLIP,		/* in use by CLIP protocol */
+	ATM_VF_CLOSE,		/* asynchronous close - VC is being torn down */
 };
 
 
-#define ATM_VF2VS(flags) \
-    (test_bit(ATM_VF_READY,&(flags)) ? ATM_VS_CONNECTED : \
-     test_bit(ATM_VF_RELEASED,&(flags)) ? ATM_VS_CLOSING : \
-     test_bit(ATM_VF_LISTEN,&(flags)) ? ATM_VS_LISTEN : \
-     test_bit(ATM_VF_REGIS,&(flags)) ? ATM_VS_INUSE : \
-     test_bit(ATM_VF_BOUND,&(flags)) ? ATM_VS_BOUND : ATM_VS_IDLE)
-
-
 enum {
 	ATM_DF_REMOVED,		/* device was removed from atm_devs list */
 };
@@ -100,7 +78,6 @@ struct atm_vcc {
 	unsigned long	atm_options;	/* ATM layer options */
 	struct atm_dev	*dev;		/* device back pointer */
 	struct atm_qos	qos;		/* QOS */
-	struct atm_sap	sap;		/* SAP */
 	void (*release_cb)(struct atm_vcc *vcc); /* release_sock callback */
 	void (*push)(struct atm_vcc *vcc,struct sk_buff *skb);
 	void (*pop)(struct atm_vcc *vcc,struct sk_buff *skb); /* optional */
@@ -109,16 +86,8 @@ struct atm_vcc {
 	void		*proto_data;	/* per-protocol data */
 	struct k_atm_aal_stats *stats;	/* pointer to AAL stats group */
 	struct module *owner;		/* owner of ->push function */
-	/* SVC part --- may move later ------------------------------------- */
-	short		itf;		/* interface number */
-	struct sockaddr_atmsvc local;
-	struct sockaddr_atmsvc remote;
-	/* Multipoint part ------------------------------------------------- */
-	struct atm_vcc	*session;	/* session VCC descriptor */
-	/* Other stuff ----------------------------------------------------- */
-	void		*user_back;	/* user backlink - not touched by */
-					/* native ATM stack. Currently used */
-					/* by CLIP and sch_atm. */
+	void		*user_back;	/* user backlink - not touched by the */
+					/* native ATM stack, used by sch_atm */
 };
 
 static inline struct atm_vcc *atm_sk(struct sock *sk)
@@ -151,7 +120,6 @@ struct atm_dev {
 	char		signal;		/* signal status (ATM_PHY_SIG_*) */
 	int		link_rate;	/* link rate (default: OC3) */
 	refcount_t	refcnt;		/* reference count */
-	spinlock_t	lock;		/* protect internal members */
 #ifdef CONFIG_PROC_FS
 	struct proc_dir_entry *proc_entry; /* proc entry */
 	char *proc_name;		/* proc entry name */
diff --git a/net/atm/common.h b/net/atm/common.h
index ae4502abf028..11cb51dd7dbb 100644
--- a/net/atm/common.h
+++ b/net/atm/common.h
@@ -28,8 +28,6 @@ void vcc_process_recv_queue(struct atm_vcc *vcc);
 
 int atmpvc_init(void);
 void atmpvc_exit(void);
-int atmsvc_init(void);
-void atmsvc_exit(void);
 int atm_sysfs_init(void);
 void atm_sysfs_exit(void);
 
@@ -48,9 +46,6 @@ static inline void atm_proc_exit(void)
 }
 #endif /* CONFIG_PROC_FS */
 
-/* SVC */
-int svc_change_qos(struct atm_vcc *vcc,struct atm_qos *qos);
-
 void atm_dev_release_vccs(struct atm_dev *dev);
 
 #endif
diff --git a/net/atm/signaling.h b/net/atm/signaling.h
deleted file mode 100644
index 2df8220f7ab5..000000000000
--- a/net/atm/signaling.h
+++ /dev/null
@@ -1,31 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/* net/atm/signaling.h - ATM signaling */
-
-/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
-
-
-#ifndef NET_ATM_SIGNALING_H
-#define NET_ATM_SIGNALING_H
-
-#include <linux/atm.h>
-#include <linux/atmdev.h>
-#include <linux/atmsvc.h>
-
-
-extern struct atm_vcc *sigd; /* needed in svc_release */
-
-
-/*
- * sigd_enq is a wrapper for sigd_enq2, covering the more common cases, and
- * avoiding huge lists of null values.
- */
-
-void sigd_enq2(struct atm_vcc *vcc,enum atmsvc_msg_type type,
-    struct atm_vcc *listen_vcc,const struct sockaddr_atmpvc *pvc,
-    const struct sockaddr_atmsvc *svc,const struct atm_qos *qos,int reply);
-void sigd_enq(struct atm_vcc *vcc,enum atmsvc_msg_type type,
-    struct atm_vcc *listen_vcc,const struct sockaddr_atmpvc *pvc,
-    const struct sockaddr_atmsvc *svc);
-int sigd_attach(struct atm_vcc *vcc);
-
-#endif
diff --git a/net/atm/br2684.c b/net/atm/br2684.c
index 6580d67c3456..05712c28386a 100644
--- a/net/atm/br2684.c
+++ b/net/atm/br2684.c
@@ -311,8 +311,7 @@ static netdev_tx_t br2684_start_xmit(struct sk_buff *skb,
 
 	bh_lock_sock(sk_atm(atmvcc));
 
-	if (test_bit(ATM_VF_RELEASED, &atmvcc->flags) ||
-	    test_bit(ATM_VF_CLOSE, &atmvcc->flags) ||
+	if (test_bit(ATM_VF_CLOSE, &atmvcc->flags) ||
 	    !test_bit(ATM_VF_READY, &atmvcc->flags)) {
 		dev->stats.tx_dropped++;
 		dev_kfree_skb(skb);
diff --git a/net/atm/common.c b/net/atm/common.c
index 7d5b7c39b80b..650814d0a56c 100644
--- a/net/atm/common.c
+++ b/net/atm/common.c
@@ -30,7 +30,6 @@
 #include "resources.h"		/* atm_find_dev */
 #include "common.h"		/* prototypes */
 #include "protocols.h"		/* atm_init_<transport> */
-#include "signaling.h"		/* for WAITING and sigd_attach */
 
 struct hlist_head vcc_hash[VCC_HTABLE_SIZE];
 EXPORT_SYMBOL(vcc_hash);
@@ -154,8 +153,6 @@ int vcc_create(struct net *net, struct socket *sock, int protocol, int family, i
 
 	vcc = atm_sk(sk);
 	vcc->dev = NULL;
-	memset(&vcc->local, 0, sizeof(struct sockaddr_atmsvc));
-	memset(&vcc->remote, 0, sizeof(struct sockaddr_atmsvc));
 	vcc->qos.txtp.max_sdu = 1 << 16; /* for meta VCs */
 	refcount_set(&sk->sk_wmem_alloc, SK_WMEM_ALLOC_BIAS);
 	atomic_set(&sk->sk_rmem_alloc, 0);
@@ -216,7 +213,6 @@ void vcc_release_async(struct atm_vcc *vcc, int reply)
 	set_bit(ATM_VF_CLOSE, &vcc->flags);
 	sk->sk_shutdown |= RCV_SHUTDOWN;
 	sk->sk_err = -reply;
-	clear_bit(ATM_VF_WAITING, &vcc->flags);
 	sk->sk_state_change(sk);
 }
 EXPORT_SYMBOL(vcc_release_async);
@@ -527,8 +523,7 @@ int vcc_recvmsg(struct socket *sock, struct msghdr *msg, size_t size,
 		return -EOPNOTSUPP;
 
 	vcc = ATM_SD(sock);
-	if (test_bit(ATM_VF_RELEASED, &vcc->flags) ||
-	    test_bit(ATM_VF_CLOSE, &vcc->flags) ||
+	if (test_bit(ATM_VF_CLOSE, &vcc->flags) ||
 	    !test_bit(ATM_VF_READY, &vcc->flags))
 		return 0;
 
@@ -575,8 +570,7 @@ int vcc_sendmsg(struct socket *sock, struct msghdr *m, size_t size)
 		goto out;
 	}
 	vcc = ATM_SD(sock);
-	if (test_bit(ATM_VF_RELEASED, &vcc->flags) ||
-	    test_bit(ATM_VF_CLOSE, &vcc->flags) ||
+	if (test_bit(ATM_VF_CLOSE, &vcc->flags) ||
 	    !test_bit(ATM_VF_READY, &vcc->flags)) {
 		error = -EPIPE;
 		send_sig(SIGPIPE, current, 0);
@@ -604,8 +598,7 @@ int vcc_sendmsg(struct socket *sock, struct msghdr *m, size_t size)
 			error = -ERESTARTSYS;
 			break;
 		}
-		if (test_bit(ATM_VF_RELEASED, &vcc->flags) ||
-		    test_bit(ATM_VF_CLOSE, &vcc->flags) ||
+		if (test_bit(ATM_VF_CLOSE, &vcc->flags) ||
 		    !test_bit(ATM_VF_READY, &vcc->flags)) {
 			error = -EPIPE;
 			send_sig(SIGPIPE, current, 0);
@@ -665,8 +658,7 @@ __poll_t vcc_poll(struct file *file, struct socket *sock, poll_table *wait)
 	if (sk->sk_err)
 		mask = EPOLLERR;
 
-	if (test_bit(ATM_VF_RELEASED, &vcc->flags) ||
-	    test_bit(ATM_VF_CLOSE, &vcc->flags))
+	if (test_bit(ATM_VF_CLOSE, &vcc->flags))
 		mask |= EPOLLHUP;
 
 	/* readable? */
@@ -674,10 +666,6 @@ __poll_t vcc_poll(struct file *file, struct socket *sock, poll_table *wait)
 		mask |= EPOLLIN | EPOLLRDNORM;
 
 	/* writable? */
-	if (sock->state == SS_CONNECTING &&
-	    test_bit(ATM_VF_WAITING, &vcc->flags))
-		return mask;
-
 	if (vcc->qos.txtp.traffic_class != ATM_NONE &&
 	    vcc_writable(sk))
 		mask |= EPOLLOUT | EPOLLWRNORM | EPOLLWRBAND;
@@ -704,9 +692,7 @@ static int atm_change_qos(struct atm_vcc *vcc, struct atm_qos *qos)
 		return error;
 	if (!vcc->dev->ops->change_qos)
 		return -EOPNOTSUPP;
-	if (sk_atm(vcc)->sk_family == AF_ATMPVC)
-		return vcc->dev->ops->change_qos(vcc, qos, ATM_MF_SET);
-	return svc_change_qos(vcc, qos);
+	return vcc->dev->ops->change_qos(vcc, qos, ATM_MF_SET);
 }
 
 static int check_tp(const struct atm_trafprm *tp)
@@ -854,15 +840,10 @@ static int __init atm_init(void)
 		pr_err("atmpvc_init() failed with %d\n", error);
 		goto out_unregister_vcc_proto;
 	}
-	error = atmsvc_init();
-	if (error < 0) {
-		pr_err("atmsvc_init() failed with %d\n", error);
-		goto out_atmpvc_exit;
-	}
 	error = atm_proc_init();
 	if (error < 0) {
 		pr_err("atm_proc_init() failed with %d\n", error);
-		goto out_atmsvc_exit;
+		goto out_atmpvc_exit;
 	}
 	error = atm_sysfs_init();
 	if (error < 0) {
@@ -873,8 +854,6 @@ static int __init atm_init(void)
 	return error;
 out_atmproc_exit:
 	atm_proc_exit();
-out_atmsvc_exit:
-	atmsvc_exit();
 out_atmpvc_exit:
 	atmpvc_exit();
 out_unregister_vcc_proto:
@@ -886,7 +865,6 @@ static void __exit atm_exit(void)
 {
 	atm_proc_exit();
 	atm_sysfs_exit();
-	atmsvc_exit();
 	atmpvc_exit();
 	proto_unregister(&vcc_proto);
 }
@@ -898,4 +876,3 @@ module_exit(atm_exit);
 MODULE_DESCRIPTION("Asynchronous Transfer Mode (ATM) networking core");
 MODULE_LICENSE("GPL");
 MODULE_ALIAS_NETPROTO(PF_ATMPVC);
-MODULE_ALIAS_NETPROTO(PF_ATMSVC);
diff --git a/net/atm/ioctl.c b/net/atm/ioctl.c
index 97f20cd051ed..11f6d236f5d6 100644
--- a/net/atm/ioctl.c
+++ b/net/atm/ioctl.c
@@ -13,13 +13,11 @@
 #include <linux/atmdev.h>
 #include <linux/atmarp.h>	/* manifest constants */
 #include <linux/capability.h>
-#include <linux/atmsvc.h>
 #include <linux/mutex.h>
 #include <asm/ioctls.h>
 #include <net/compat.h>
 
 #include "resources.h"
-#include "signaling.h"		/* for WAITING and sigd_attach */
 #include "common.h"
 
 
@@ -86,36 +84,6 @@ static int do_vcc_ioctl(struct socket *sock, unsigned int cmd,
 				     current->comm, task_pid_nr(current));
 		error = 0;
 		goto done;
-	case ATMSIGD_CTRL:
-		if (!capable(CAP_NET_ADMIN)) {
-			error = -EPERM;
-			goto done;
-		}
-		/*
-		 * The user/kernel protocol for exchanging signalling
-		 * info uses kernel pointers as opaque references,
-		 * so the holder of the file descriptor can scribble
-		 * on the kernel... so we should make sure that we
-		 * have the same privileges that /proc/kcore needs
-		 */
-		if (!capable(CAP_SYS_RAWIO)) {
-			error = -EPERM;
-			goto done;
-		}
-#ifdef CONFIG_COMPAT
-		/* WTF? I don't even want to _think_ about making this
-		   work for 32-bit userspace. TBH I don't really want
-		   to think about it at all. dwmw2. */
-		if (compat) {
-			net_warn_ratelimited("32-bit task cannot be atmsigd\n");
-			error = -EINVAL;
-			goto done;
-		}
-#endif
-		error = sigd_attach(vcc);
-		if (!error)
-			sock->state = SS_CONNECTED;
-		goto done;
 	case ATM_SETBACKEND:
 	case ATM_NEWBACKENDIF:
 	{
diff --git a/net/atm/pppoatm.c b/net/atm/pppoatm.c
index e3c422dc533a..6da52d12df68 100644
--- a/net/atm/pppoatm.c
+++ b/net/atm/pppoatm.c
@@ -308,8 +308,7 @@ static int pppoatm_send(struct ppp_channel *chan, struct sk_buff *skb)
 		test_and_set_bit(BLOCKED, &pvcc->blocked);
 		goto nospace;
 	}
-	if (test_bit(ATM_VF_RELEASED, &vcc->flags) ||
-	    test_bit(ATM_VF_CLOSE, &vcc->flags) ||
+	if (test_bit(ATM_VF_CLOSE, &vcc->flags) ||
 	    !test_bit(ATM_VF_READY, &vcc->flags)) {
 		bh_unlock_sock(sk_atm(vcc));
 		kfree_skb(skb);
diff --git a/net/atm/proc.c b/net/atm/proc.c
index b650da764a23..8f20b49b9c02 100644
--- a/net/atm/proc.c
+++ b/net/atm/proc.c
@@ -29,7 +29,6 @@
 #include <linux/atomic.h>
 #include "resources.h"
 #include "common.h" /* atm_proc_init prototype */
-#include "signaling.h" /* to get sigd - ugly too */
 
 static ssize_t proc_dev_atm_read(struct file *file, char __user *buf,
 				 size_t count, loff_t *pos);
@@ -156,13 +155,6 @@ static void pvc_info(struct seq_file *seq, struct atm_vcc *vcc)
 	seq_putc(seq, '\n');
 }
 
-static const char *vcc_state(struct atm_vcc *vcc)
-{
-	static const char *const map[] = { ATM_VS2TXT_MAP };
-
-	return map[ATM_VF2VS(vcc->flags)];
-}
-
 static void vcc_info(struct seq_file *seq, struct atm_vcc *vcc)
 {
 	struct sock *sk = sk_atm(vcc);
@@ -177,9 +169,6 @@ static void vcc_info(struct seq_file *seq, struct atm_vcc *vcc)
 	case AF_ATMPVC:
 		seq_printf(seq, "PVC");
 		break;
-	case AF_ATMSVC:
-		seq_printf(seq, "SVC");
-		break;
 	default:
 		seq_printf(seq, "%3d", sk->sk_family);
 	}
@@ -190,26 +179,6 @@ static void vcc_info(struct seq_file *seq, struct atm_vcc *vcc)
 		   refcount_read(&sk->sk_refcnt));
 }
 
-static void svc_info(struct seq_file *seq, struct atm_vcc *vcc)
-{
-	if (!vcc->dev)
-		seq_printf(seq, sizeof(void *) == 4 ?
-			   "N/A@%pK%10s" : "N/A@%pK%2s", vcc, "");
-	else
-		seq_printf(seq, "%3d %3d %5d         ",
-			   vcc->dev->number, vcc->vpi, vcc->vci);
-	seq_printf(seq, "%-10s ", vcc_state(vcc));
-	seq_printf(seq, "%s%s", vcc->remote.sas_addr.pub,
-	    *vcc->remote.sas_addr.pub && *vcc->remote.sas_addr.prv ? "+" : "");
-	if (*vcc->remote.sas_addr.prv) {
-		int i;
-
-		for (i = 0; i < ATM_ESA_LEN; i++)
-			seq_printf(seq, "%02x", vcc->remote.sas_addr.prv[i]);
-	}
-	seq_putc(seq, '\n');
-}
-
 static int atm_dev_seq_show(struct seq_file *seq, void *v)
 {
 	static char atm_dev_banner[] =
@@ -278,29 +247,6 @@ static const struct seq_operations vcc_seq_ops = {
 	.show	= vcc_seq_show,
 };
 
-static int svc_seq_show(struct seq_file *seq, void *v)
-{
-	static const char atm_svc_banner[] =
-		"Itf VPI VCI           State      Remote\n";
-
-	if (v == SEQ_START_TOKEN)
-		seq_puts(seq, atm_svc_banner);
-	else {
-		struct vcc_state *state = seq->private;
-		struct atm_vcc *vcc = atm_sk(state->sk);
-
-		svc_info(seq, vcc);
-	}
-	return 0;
-}
-
-static const struct seq_operations svc_seq_ops = {
-	.start	= vcc_seq_start,
-	.next	= vcc_seq_next,
-	.stop	= vcc_seq_stop,
-	.show	= svc_seq_show,
-};
-
 static ssize_t proc_dev_atm_read(struct file *file, char __user *buf,
 				 size_t count, loff_t *pos)
 {
@@ -376,8 +322,6 @@ int __init atm_proc_init(void)
 	proc_create_seq("devices", 0444, atm_proc_root, &atm_dev_seq_ops);
 	proc_create_seq_private("pvc", 0444, atm_proc_root, &pvc_seq_ops,
 			sizeof(struct vcc_state), (void *)(uintptr_t)PF_ATMPVC);
-	proc_create_seq_private("svc", 0444, atm_proc_root, &svc_seq_ops,
-			sizeof(struct vcc_state), (void *)(uintptr_t)PF_ATMSVC);
 	proc_create_seq_private("vc", 0444, atm_proc_root, &vcc_seq_ops,
 			sizeof(struct vcc_state), NULL);
 	return 0;
diff --git a/net/atm/resources.c b/net/atm/resources.c
index a08f65aacf75..3fa4b0df63a8 100644
--- a/net/atm/resources.c
+++ b/net/atm/resources.c
@@ -40,7 +40,6 @@ static struct atm_dev *__alloc_atm_dev(const char *type)
 	dev->type = type;
 	dev->signal = ATM_PHY_SIG_UNKNOWN;
 	dev->link_rate = ATM_OC3_PCR;
-	spin_lock_init(&dev->lock);
 
 	return dev;
 }
diff --git a/net/atm/signaling.c b/net/atm/signaling.c
deleted file mode 100644
index b991d937205a..000000000000
--- a/net/atm/signaling.c
+++ /dev/null
@@ -1,297 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/* net/atm/signaling.c - ATM signaling */
-
-/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
-
-#define pr_fmt(fmt) KBUILD_MODNAME ":%s: " fmt, __func__
-
-#include <linux/errno.h>	/* error codes */
-#include <linux/kernel.h>	/* printk */
-#include <linux/skbuff.h>
-#include <linux/wait.h>
-#include <linux/sched.h>	/* jiffies and HZ */
-#include <linux/atm.h>		/* ATM stuff */
-#include <linux/atmsap.h>
-#include <linux/atmsvc.h>
-#include <linux/atmdev.h>
-#include <linux/bitops.h>
-#include <linux/slab.h>
-
-#include "resources.h"
-#include "signaling.h"
-
-struct atm_vcc *sigd = NULL;
-
-/*
- * find_get_vcc - validate and get a reference to a vcc pointer
- * @vcc: the vcc pointer to validate
- *
- * This function validates that @vcc points to a registered VCC in vcc_hash.
- * If found, it increments the socket reference count and returns the vcc.
- * The caller must call sock_put(sk_atm(vcc)) when done.
- *
- * Returns the vcc pointer if valid, NULL otherwise.
- */
-static struct atm_vcc *find_get_vcc(struct atm_vcc *vcc)
-{
-	int i;
-
-	read_lock(&vcc_sklist_lock);
-	for (i = 0; i < VCC_HTABLE_SIZE; i++) {
-		struct sock *s;
-
-		sk_for_each(s, &vcc_hash[i]) {
-			if (atm_sk(s) == vcc) {
-				sock_hold(s);
-				read_unlock(&vcc_sklist_lock);
-				return vcc;
-			}
-		}
-	}
-	read_unlock(&vcc_sklist_lock);
-	return NULL;
-}
-
-static void sigd_put_skb(struct sk_buff *skb)
-{
-	if (!sigd) {
-		pr_debug("atmsvc: no signaling daemon\n");
-		kfree_skb(skb);
-		return;
-	}
-	atm_force_charge(sigd, skb->truesize);
-	skb_queue_tail(&sk_atm(sigd)->sk_receive_queue, skb);
-	sk_atm(sigd)->sk_data_ready(sk_atm(sigd));
-}
-
-static void modify_qos(struct atm_vcc *vcc, struct atmsvc_msg *msg)
-{
-	struct sk_buff *skb;
-
-	if (test_bit(ATM_VF_RELEASED, &vcc->flags) ||
-	    !test_bit(ATM_VF_READY, &vcc->flags))
-		return;
-	msg->type = as_error;
-	if (!vcc->dev->ops->change_qos)
-		msg->reply = -EOPNOTSUPP;
-	else {
-		/* should lock VCC */
-		msg->reply = vcc->dev->ops->change_qos(vcc, &msg->qos,
-						       msg->reply);
-		if (!msg->reply)
-			msg->type = as_okay;
-	}
-	/*
-	 * Should probably just turn around the old skb. But then, the buffer
-	 * space accounting needs to follow the change too. Maybe later.
-	 */
-	while (!(skb = alloc_skb(sizeof(struct atmsvc_msg), GFP_KERNEL)))
-		schedule();
-	*(struct atmsvc_msg *)skb_put(skb, sizeof(struct atmsvc_msg)) = *msg;
-	sigd_put_skb(skb);
-}
-
-static int sigd_send(struct atm_vcc *vcc, struct sk_buff *skb)
-{
-	struct atmsvc_msg *msg;
-	struct atm_vcc *session_vcc;
-	struct sock *sk;
-
-	msg = (struct atmsvc_msg *) skb->data;
-	WARN_ON(refcount_sub_and_test(skb->truesize, &sk_atm(vcc)->sk_wmem_alloc));
-
-	vcc = find_get_vcc(*(struct atm_vcc **)&msg->vcc);
-	if (!vcc) {
-		pr_debug("invalid vcc pointer in msg\n");
-		dev_kfree_skb(skb);
-		return -EINVAL;
-	}
-
-	pr_debug("%d (0x%lx)\n", (int)msg->type, (unsigned long)vcc);
-	sk = sk_atm(vcc);
-
-	switch (msg->type) {
-	case as_okay:
-		sk->sk_err = -msg->reply;
-		clear_bit(ATM_VF_WAITING, &vcc->flags);
-		if (!*vcc->local.sas_addr.prv && !*vcc->local.sas_addr.pub) {
-			vcc->local.sas_family = AF_ATMSVC;
-			memcpy(vcc->local.sas_addr.prv,
-			       msg->local.sas_addr.prv, ATM_ESA_LEN);
-			memcpy(vcc->local.sas_addr.pub,
-			       msg->local.sas_addr.pub, ATM_E164_LEN + 1);
-		}
-		session_vcc = vcc->session ? vcc->session : vcc;
-		if (session_vcc->vpi || session_vcc->vci)
-			break;
-		session_vcc->itf = msg->pvc.sap_addr.itf;
-		session_vcc->vpi = msg->pvc.sap_addr.vpi;
-		session_vcc->vci = msg->pvc.sap_addr.vci;
-		if (session_vcc->vpi || session_vcc->vci)
-			session_vcc->qos = msg->qos;
-		break;
-	case as_error:
-		clear_bit(ATM_VF_REGIS, &vcc->flags);
-		clear_bit(ATM_VF_READY, &vcc->flags);
-		sk->sk_err = -msg->reply;
-		clear_bit(ATM_VF_WAITING, &vcc->flags);
-		break;
-	case as_indicate:
-		/* Release the reference from msg->vcc, we'll use msg->listen_vcc instead */
-		sock_put(sk);
-
-		vcc = find_get_vcc(*(struct atm_vcc **)&msg->listen_vcc);
-		if (!vcc) {
-			pr_debug("invalid listen_vcc pointer in msg\n");
-			dev_kfree_skb(skb);
-			return -EINVAL;
-		}
-
-		sk = sk_atm(vcc);
-		pr_debug("as_indicate!!!\n");
-		lock_sock(sk);
-		if (sk_acceptq_is_full(sk)) {
-			sigd_enq(NULL, as_reject, vcc, NULL, NULL);
-			dev_kfree_skb(skb);
-			goto as_indicate_complete;
-		}
-		sk_acceptq_added(sk);
-		skb_queue_tail(&sk->sk_receive_queue, skb);
-		pr_debug("waking sk_sleep(sk) 0x%p\n", sk_sleep(sk));
-		sk->sk_state_change(sk);
-as_indicate_complete:
-		release_sock(sk);
-		/* Paired with find_get_vcc(msg->listen_vcc) above */
-		sock_put(sk);
-		return 0;
-	case as_close:
-		set_bit(ATM_VF_RELEASED, &vcc->flags);
-		vcc_release_async(vcc, msg->reply);
-		goto out;
-	case as_modify:
-		modify_qos(vcc, msg);
-		break;
-	case as_addparty:
-	case as_dropparty:
-		WRITE_ONCE(sk->sk_err_soft, -msg->reply);
-					/* < 0 failure, otherwise ep_ref */
-		clear_bit(ATM_VF_WAITING, &vcc->flags);
-		break;
-	default:
-		pr_alert("bad message type %d\n", (int)msg->type);
-		dev_kfree_skb(skb);
-		/* Paired with find_get_vcc(msg->vcc) above */
-		sock_put(sk);
-		return -EINVAL;
-	}
-	sk->sk_state_change(sk);
-out:
-	dev_kfree_skb(skb);
-	/* Paired with find_get_vcc(msg->vcc) above */
-	sock_put(sk);
-	return 0;
-}
-
-void sigd_enq2(struct atm_vcc *vcc, enum atmsvc_msg_type type,
-	       struct atm_vcc *listen_vcc, const struct sockaddr_atmpvc *pvc,
-	       const struct sockaddr_atmsvc *svc, const struct atm_qos *qos,
-	       int reply)
-{
-	struct sk_buff *skb;
-	struct atmsvc_msg *msg;
-	static unsigned int session = 0;
-
-	pr_debug("%d (0x%p)\n", (int)type, vcc);
-	while (!(skb = alloc_skb(sizeof(struct atmsvc_msg), GFP_KERNEL)))
-		schedule();
-	msg = skb_put_zero(skb, sizeof(struct atmsvc_msg));
-	msg->type = type;
-	*(struct atm_vcc **) &msg->vcc = vcc;
-	*(struct atm_vcc **) &msg->listen_vcc = listen_vcc;
-	msg->reply = reply;
-	if (qos)
-		msg->qos = *qos;
-	if (vcc)
-		msg->sap = vcc->sap;
-	if (svc)
-		msg->svc = *svc;
-	if (vcc)
-		msg->local = vcc->local;
-	if (pvc)
-		msg->pvc = *pvc;
-	if (vcc) {
-		if (type == as_connect && test_bit(ATM_VF_SESSION, &vcc->flags))
-			msg->session = ++session;
-			/* every new pmp connect gets the next session number */
-	}
-	sigd_put_skb(skb);
-	if (vcc)
-		set_bit(ATM_VF_REGIS, &vcc->flags);
-}
-
-void sigd_enq(struct atm_vcc *vcc, enum atmsvc_msg_type type,
-	      struct atm_vcc *listen_vcc, const struct sockaddr_atmpvc *pvc,
-	      const struct sockaddr_atmsvc *svc)
-{
-	sigd_enq2(vcc, type, listen_vcc, pvc, svc, vcc ? &vcc->qos : NULL, 0);
-	/* other ISP applications may use "reply" */
-}
-
-static void purge_vcc(struct atm_vcc *vcc)
-{
-	if (sk_atm(vcc)->sk_family == PF_ATMSVC &&
-	    !test_bit(ATM_VF_META, &vcc->flags)) {
-		set_bit(ATM_VF_RELEASED, &vcc->flags);
-		clear_bit(ATM_VF_REGIS, &vcc->flags);
-		vcc_release_async(vcc, -EUNATCH);
-	}
-}
-
-static void sigd_close(struct atm_vcc *vcc)
-{
-	struct sock *s;
-	int i;
-
-	pr_debug("\n");
-	sigd = NULL;
-	if (skb_peek(&sk_atm(vcc)->sk_receive_queue))
-		pr_err("closing with requests pending\n");
-	skb_queue_purge(&sk_atm(vcc)->sk_receive_queue);
-
-	read_lock(&vcc_sklist_lock);
-	for (i = 0; i < VCC_HTABLE_SIZE; ++i) {
-		struct hlist_head *head = &vcc_hash[i];
-
-		sk_for_each(s, head) {
-			vcc = atm_sk(s);
-
-			purge_vcc(vcc);
-		}
-	}
-	read_unlock(&vcc_sklist_lock);
-}
-
-static const struct atmdev_ops sigd_dev_ops = {
-	.close = sigd_close,
-	.send =	sigd_send
-};
-
-static struct atm_dev sigd_dev = {
-	.ops =		&sigd_dev_ops,
-	.type =		"sig",
-	.number =	999,
-	.lock =		__SPIN_LOCK_UNLOCKED(sigd_dev.lock)
-};
-
-int sigd_attach(struct atm_vcc *vcc)
-{
-	if (sigd)
-		return -EADDRINUSE;
-	pr_debug("\n");
-	sigd = vcc;
-	vcc->dev = &sigd_dev;
-	vcc_insert_socket(sk_atm(vcc));
-	set_bit(ATM_VF_META, &vcc->flags);
-	set_bit(ATM_VF_READY, &vcc->flags);
-	return 0;
-}
diff --git a/net/atm/svc.c b/net/atm/svc.c
deleted file mode 100644
index 270e95154a2b..000000000000
--- a/net/atm/svc.c
+++ /dev/null
@@ -1,694 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/* net/atm/svc.c - ATM SVC sockets */
-
-/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
-
-#define pr_fmt(fmt) KBUILD_MODNAME ":%s: " fmt, __func__
-
-#include <linux/string.h>
-#include <linux/net.h>		/* struct socket, struct proto_ops */
-#include <linux/errno.h>	/* error codes */
-#include <linux/kernel.h>	/* printk */
-#include <linux/skbuff.h>
-#include <linux/wait.h>
-#include <linux/sched/signal.h>
-#include <linux/fcntl.h>	/* O_NONBLOCK */
-#include <linux/init.h>
-#include <linux/atm.h>		/* ATM stuff */
-#include <linux/atmsap.h>
-#include <linux/atmsvc.h>
-#include <linux/atmdev.h>
-#include <linux/bitops.h>
-#include <net/sock.h>		/* for sock_no_* */
-#include <linux/uaccess.h>
-#include <linux/uio.h>
-#include <linux/export.h>
-
-#include "resources.h"
-#include "common.h"		/* common for PVCs and SVCs */
-#include "signaling.h"
-
-#ifdef CONFIG_COMPAT
-/* It actually takes struct sockaddr_atmsvc, not struct atm_iobuf */
-#define COMPAT_ATM_ADDPARTY _IOW('a', ATMIOC_SPECIAL + 4, struct compat_atm_iobuf)
-#endif
-
-static int svc_create(struct net *net, struct socket *sock, int protocol,
-		      int kern);
-
-/*
- * Note: since all this is still nicely synchronized with the signaling demon,
- *       there's no need to protect sleep loops with clis. If signaling is
- *       moved into the kernel, that would change.
- */
-
-
-static int svc_shutdown(struct socket *sock, int how)
-{
-	return 0;
-}
-
-static void svc_disconnect(struct atm_vcc *vcc)
-{
-	DEFINE_WAIT(wait);
-	struct sk_buff *skb;
-	struct sock *sk = sk_atm(vcc);
-
-	pr_debug("%p\n", vcc);
-	if (test_bit(ATM_VF_REGIS, &vcc->flags)) {
-		sigd_enq(vcc, as_close, NULL, NULL, NULL);
-		for (;;) {
-			prepare_to_wait(sk_sleep(sk), &wait, TASK_UNINTERRUPTIBLE);
-			if (test_bit(ATM_VF_RELEASED, &vcc->flags) || !sigd)
-				break;
-			schedule();
-		}
-		finish_wait(sk_sleep(sk), &wait);
-	}
-	/* beware - socket is still in use by atmsigd until the last
-	   as_indicate has been answered */
-	while ((skb = skb_dequeue(&sk->sk_receive_queue)) != NULL) {
-		atm_return(vcc, skb->truesize);
-		pr_debug("LISTEN REL\n");
-		sigd_enq2(NULL, as_reject, vcc, NULL, NULL, &vcc->qos, 0);
-		dev_kfree_skb(skb);
-	}
-	clear_bit(ATM_VF_REGIS, &vcc->flags);
-	/* ... may retry later */
-}
-
-static int svc_release(struct socket *sock)
-{
-	struct sock *sk = sock->sk;
-	struct atm_vcc *vcc;
-
-	if (sk) {
-		vcc = ATM_SD(sock);
-		pr_debug("%p\n", vcc);
-		clear_bit(ATM_VF_READY, &vcc->flags);
-		/*
-		 * VCC pointer is used as a reference,
-		 * so we must not free it (thereby subjecting it to re-use)
-		 * before all pending connections are closed
-		 */
-		svc_disconnect(vcc);
-		vcc_release(sock);
-	}
-	return 0;
-}
-
-static int svc_bind(struct socket *sock, struct sockaddr_unsized *sockaddr,
-		    int sockaddr_len)
-{
-	DEFINE_WAIT(wait);
-	struct sock *sk = sock->sk;
-	struct sockaddr_atmsvc *addr;
-	struct atm_vcc *vcc;
-	int error;
-
-	if (sockaddr_len != sizeof(struct sockaddr_atmsvc))
-		return -EINVAL;
-	lock_sock(sk);
-	if (sock->state == SS_CONNECTED) {
-		error = -EISCONN;
-		goto out;
-	}
-	if (sock->state != SS_UNCONNECTED) {
-		error = -EINVAL;
-		goto out;
-	}
-	vcc = ATM_SD(sock);
-	addr = (struct sockaddr_atmsvc *) sockaddr;
-	if (addr->sas_family != AF_ATMSVC) {
-		error = -EAFNOSUPPORT;
-		goto out;
-	}
-	clear_bit(ATM_VF_BOUND, &vcc->flags);
-	    /* failing rebind will kill old binding */
-	/* @@@ check memory (de)allocation on rebind */
-	if (!test_bit(ATM_VF_HASQOS, &vcc->flags)) {
-		error = -EBADFD;
-		goto out;
-	}
-	vcc->local = *addr;
-	set_bit(ATM_VF_WAITING, &vcc->flags);
-	sigd_enq(vcc, as_bind, NULL, NULL, &vcc->local);
-	for (;;) {
-		prepare_to_wait(sk_sleep(sk), &wait, TASK_UNINTERRUPTIBLE);
-		if (!test_bit(ATM_VF_WAITING, &vcc->flags) || !sigd)
-			break;
-		schedule();
-	}
-	finish_wait(sk_sleep(sk), &wait);
-	clear_bit(ATM_VF_REGIS, &vcc->flags); /* doesn't count */
-	if (!sigd) {
-		error = -EUNATCH;
-		goto out;
-	}
-	if (!sk->sk_err)
-		set_bit(ATM_VF_BOUND, &vcc->flags);
-	error = -sk->sk_err;
-out:
-	release_sock(sk);
-	return error;
-}
-
-static int svc_connect(struct socket *sock, struct sockaddr_unsized *sockaddr,
-		       int sockaddr_len, int flags)
-{
-	DEFINE_WAIT(wait);
-	struct sock *sk = sock->sk;
-	struct sockaddr_atmsvc *addr;
-	struct atm_vcc *vcc = ATM_SD(sock);
-	int error;
-
-	pr_debug("%p\n", vcc);
-	lock_sock(sk);
-	if (sockaddr_len != sizeof(struct sockaddr_atmsvc)) {
-		error = -EINVAL;
-		goto out;
-	}
-
-	switch (sock->state) {
-	default:
-		error = -EINVAL;
-		goto out;
-	case SS_CONNECTED:
-		error = -EISCONN;
-		goto out;
-	case SS_CONNECTING:
-		if (test_bit(ATM_VF_WAITING, &vcc->flags)) {
-			error = -EALREADY;
-			goto out;
-		}
-		sock->state = SS_UNCONNECTED;
-		if (sk->sk_err) {
-			error = -sk->sk_err;
-			goto out;
-		}
-		break;
-	case SS_UNCONNECTED:
-		addr = (struct sockaddr_atmsvc *) sockaddr;
-		if (addr->sas_family != AF_ATMSVC) {
-			error = -EAFNOSUPPORT;
-			goto out;
-		}
-		if (!test_bit(ATM_VF_HASQOS, &vcc->flags)) {
-			error = -EBADFD;
-			goto out;
-		}
-		if (vcc->qos.txtp.traffic_class == ATM_ANYCLASS ||
-		    vcc->qos.rxtp.traffic_class == ATM_ANYCLASS) {
-			error = -EINVAL;
-			goto out;
-		}
-		if (!vcc->qos.txtp.traffic_class &&
-		    !vcc->qos.rxtp.traffic_class) {
-			error = -EINVAL;
-			goto out;
-		}
-		vcc->remote = *addr;
-		set_bit(ATM_VF_WAITING, &vcc->flags);
-		sigd_enq(vcc, as_connect, NULL, NULL, &vcc->remote);
-		if (flags & O_NONBLOCK) {
-			sock->state = SS_CONNECTING;
-			error = -EINPROGRESS;
-			goto out;
-		}
-		error = 0;
-		prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE);
-		while (test_bit(ATM_VF_WAITING, &vcc->flags) && sigd) {
-			schedule();
-			if (!signal_pending(current)) {
-				prepare_to_wait(sk_sleep(sk), &wait,
-						TASK_INTERRUPTIBLE);
-				continue;
-			}
-			pr_debug("*ABORT*\n");
-			/*
-			 * This is tricky:
-			 *   Kernel ---close--> Demon
-			 *   Kernel <--close--- Demon
-			 * or
-			 *   Kernel ---close--> Demon
-			 *   Kernel <--error--- Demon
-			 * or
-			 *   Kernel ---close--> Demon
-			 *   Kernel <--okay---- Demon
-			 *   Kernel <--close--- Demon
-			 */
-			sigd_enq(vcc, as_close, NULL, NULL, NULL);
-			while (test_bit(ATM_VF_WAITING, &vcc->flags) && sigd) {
-				prepare_to_wait(sk_sleep(sk), &wait,
-						TASK_INTERRUPTIBLE);
-				schedule();
-			}
-			if (!sk->sk_err)
-				while (!test_bit(ATM_VF_RELEASED, &vcc->flags) &&
-				       sigd) {
-					prepare_to_wait(sk_sleep(sk), &wait,
-							TASK_INTERRUPTIBLE);
-					schedule();
-				}
-			clear_bit(ATM_VF_REGIS, &vcc->flags);
-			clear_bit(ATM_VF_RELEASED, &vcc->flags);
-			clear_bit(ATM_VF_CLOSE, &vcc->flags);
-			    /* we're gone now but may connect later */
-			error = -EINTR;
-			break;
-		}
-		finish_wait(sk_sleep(sk), &wait);
-		if (error)
-			goto out;
-		if (!sigd) {
-			error = -EUNATCH;
-			goto out;
-		}
-		if (sk->sk_err) {
-			error = -sk->sk_err;
-			goto out;
-		}
-	}
-
-	vcc->qos.txtp.max_pcr = SELECT_TOP_PCR(vcc->qos.txtp);
-	vcc->qos.txtp.pcr = 0;
-	vcc->qos.txtp.min_pcr = 0;
-
-	error = vcc_connect(sock, vcc->itf, vcc->vpi, vcc->vci);
-	if (!error)
-		sock->state = SS_CONNECTED;
-	else
-		(void)svc_disconnect(vcc);
-out:
-	release_sock(sk);
-	return error;
-}
-
-static int svc_listen(struct socket *sock, int backlog)
-{
-	DEFINE_WAIT(wait);
-	struct sock *sk = sock->sk;
-	struct atm_vcc *vcc = ATM_SD(sock);
-	int error;
-
-	pr_debug("%p\n", vcc);
-	lock_sock(sk);
-	/* let server handle listen on unbound sockets */
-	if (test_bit(ATM_VF_SESSION, &vcc->flags)) {
-		error = -EINVAL;
-		goto out;
-	}
-	if (test_bit(ATM_VF_LISTEN, &vcc->flags)) {
-		error = -EADDRINUSE;
-		goto out;
-	}
-	set_bit(ATM_VF_WAITING, &vcc->flags);
-	sigd_enq(vcc, as_listen, NULL, NULL, &vcc->local);
-	for (;;) {
-		prepare_to_wait(sk_sleep(sk), &wait, TASK_UNINTERRUPTIBLE);
-		if (!test_bit(ATM_VF_WAITING, &vcc->flags) || !sigd)
-			break;
-		schedule();
-	}
-	finish_wait(sk_sleep(sk), &wait);
-	if (!sigd) {
-		error = -EUNATCH;
-		goto out;
-	}
-	set_bit(ATM_VF_LISTEN, &vcc->flags);
-	vcc_insert_socket(sk);
-	sk->sk_max_ack_backlog = backlog > 0 ? backlog : ATM_BACKLOG_DEFAULT;
-	error = -sk->sk_err;
-out:
-	release_sock(sk);
-	return error;
-}
-
-static int svc_accept(struct socket *sock, struct socket *newsock,
-		      struct proto_accept_arg *arg)
-{
-	struct sock *sk = sock->sk;
-	struct sk_buff *skb;
-	struct atmsvc_msg *msg;
-	struct atm_vcc *old_vcc = ATM_SD(sock);
-	struct atm_vcc *new_vcc;
-	int error;
-
-	lock_sock(sk);
-
-	error = svc_create(sock_net(sk), newsock, 0, arg->kern);
-	if (error)
-		goto out;
-
-	new_vcc = ATM_SD(newsock);
-
-	pr_debug("%p -> %p\n", old_vcc, new_vcc);
-	while (1) {
-		DEFINE_WAIT(wait);
-
-		prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE);
-		while (!(skb = skb_dequeue(&sk->sk_receive_queue)) &&
-		       sigd) {
-			if (test_bit(ATM_VF_RELEASED, &old_vcc->flags))
-				break;
-			if (test_bit(ATM_VF_CLOSE, &old_vcc->flags)) {
-				error = -sk->sk_err;
-				break;
-			}
-			if (arg->flags & O_NONBLOCK) {
-				error = -EAGAIN;
-				break;
-			}
-			release_sock(sk);
-			schedule();
-			lock_sock(sk);
-			if (signal_pending(current)) {
-				error = -ERESTARTSYS;
-				break;
-			}
-			prepare_to_wait(sk_sleep(sk), &wait,
-					TASK_INTERRUPTIBLE);
-		}
-		finish_wait(sk_sleep(sk), &wait);
-		if (error)
-			goto out;
-		if (!skb) {
-			error = -EUNATCH;
-			goto out;
-		}
-		msg = (struct atmsvc_msg *)skb->data;
-		new_vcc->qos = msg->qos;
-		set_bit(ATM_VF_HASQOS, &new_vcc->flags);
-		new_vcc->remote = msg->svc;
-		new_vcc->local = msg->local;
-		new_vcc->sap = msg->sap;
-		error = vcc_connect(newsock, msg->pvc.sap_addr.itf,
-				    msg->pvc.sap_addr.vpi,
-				    msg->pvc.sap_addr.vci);
-		dev_kfree_skb(skb);
-		sk_acceptq_removed(sk);
-		if (error) {
-			sigd_enq2(NULL, as_reject, old_vcc, NULL, NULL,
-				  &old_vcc->qos, error);
-			error = error == -EAGAIN ? -EBUSY : error;
-			goto out;
-		}
-		/* wait should be short, so we ignore the non-blocking flag */
-		set_bit(ATM_VF_WAITING, &new_vcc->flags);
-		sigd_enq(new_vcc, as_accept, old_vcc, NULL, NULL);
-		for (;;) {
-			prepare_to_wait(sk_sleep(sk_atm(new_vcc)), &wait,
-					TASK_UNINTERRUPTIBLE);
-			if (!test_bit(ATM_VF_WAITING, &new_vcc->flags) || !sigd)
-				break;
-			release_sock(sk);
-			schedule();
-			lock_sock(sk);
-		}
-		finish_wait(sk_sleep(sk_atm(new_vcc)), &wait);
-		if (!sigd) {
-			error = -EUNATCH;
-			goto out;
-		}
-		if (!sk_atm(new_vcc)->sk_err)
-			break;
-		if (sk_atm(new_vcc)->sk_err != ERESTARTSYS) {
-			error = -sk_atm(new_vcc)->sk_err;
-			goto out;
-		}
-	}
-	newsock->state = SS_CONNECTED;
-out:
-	release_sock(sk);
-	return error;
-}
-
-static int svc_getname(struct socket *sock, struct sockaddr *sockaddr,
-		       int peer)
-{
-	struct sockaddr_atmsvc *addr;
-
-	addr = (struct sockaddr_atmsvc *) sockaddr;
-	memcpy(addr, peer ? &ATM_SD(sock)->remote : &ATM_SD(sock)->local,
-	       sizeof(struct sockaddr_atmsvc));
-	return sizeof(struct sockaddr_atmsvc);
-}
-
-int svc_change_qos(struct atm_vcc *vcc, struct atm_qos *qos)
-{
-	struct sock *sk = sk_atm(vcc);
-	DEFINE_WAIT(wait);
-
-	set_bit(ATM_VF_WAITING, &vcc->flags);
-	sigd_enq2(vcc, as_modify, NULL, NULL, &vcc->local, qos, 0);
-	for (;;) {
-		prepare_to_wait(sk_sleep(sk), &wait, TASK_UNINTERRUPTIBLE);
-		if (!test_bit(ATM_VF_WAITING, &vcc->flags) ||
-		    test_bit(ATM_VF_RELEASED, &vcc->flags) || !sigd) {
-			break;
-		}
-		schedule();
-	}
-	finish_wait(sk_sleep(sk), &wait);
-	if (!sigd)
-		return -EUNATCH;
-	return -sk->sk_err;
-}
-
-static int svc_setsockopt(struct socket *sock, int level, int optname,
-			  sockptr_t optval, unsigned int optlen)
-{
-	struct sock *sk = sock->sk;
-	struct atm_vcc *vcc = ATM_SD(sock);
-	int value, error = 0;
-
-	lock_sock(sk);
-	switch (optname) {
-	case SO_ATMSAP:
-		if (level != SOL_ATM || optlen != sizeof(struct atm_sap)) {
-			error = -EINVAL;
-			goto out;
-		}
-		if (copy_from_sockptr(&vcc->sap, optval, optlen)) {
-			error = -EFAULT;
-			goto out;
-		}
-		set_bit(ATM_VF_HASSAP, &vcc->flags);
-		break;
-	case SO_MULTIPOINT:
-		if (level != SOL_ATM || optlen != sizeof(int)) {
-			error = -EINVAL;
-			goto out;
-		}
-		if (copy_from_sockptr(&value, optval, sizeof(int))) {
-			error = -EFAULT;
-			goto out;
-		}
-		if (value == 1)
-			set_bit(ATM_VF_SESSION, &vcc->flags);
-		else if (value == 0)
-			clear_bit(ATM_VF_SESSION, &vcc->flags);
-		else
-			error = -EINVAL;
-		break;
-	default:
-		error = vcc_setsockopt(sock, level, optname, optval, optlen);
-	}
-
-out:
-	release_sock(sk);
-	return error;
-}
-
-static int svc_getsockopt(struct socket *sock, int level, int optname,
-			  sockopt_t *opt)
-{
-	struct sock *sk = sock->sk;
-	int error = 0, len;
-
-	lock_sock(sk);
-	if (!__SO_LEVEL_MATCH(optname, level) || optname != SO_ATMSAP) {
-		error = vcc_getsockopt(sock, level, optname, opt);
-		goto out;
-	}
-	len = opt->optlen;
-	if (len != sizeof(struct atm_sap)) {
-		error = -EINVAL;
-		goto out;
-	}
-	if (copy_to_iter(&ATM_SD(sock)->sap, sizeof(struct atm_sap),
-			 &opt->iter_out) != sizeof(struct atm_sap)) {
-		error = -EFAULT;
-		goto out;
-	}
-out:
-	release_sock(sk);
-	return error;
-}
-
-static int svc_addparty(struct socket *sock, struct sockaddr *sockaddr,
-			int sockaddr_len, int flags)
-{
-	DEFINE_WAIT(wait);
-	struct sock *sk = sock->sk;
-	struct atm_vcc *vcc = ATM_SD(sock);
-	int error;
-
-	lock_sock(sk);
-	set_bit(ATM_VF_WAITING, &vcc->flags);
-	sigd_enq(vcc, as_addparty, NULL, NULL,
-		 (struct sockaddr_atmsvc *) sockaddr);
-	if (flags & O_NONBLOCK) {
-		error = -EINPROGRESS;
-		goto out;
-	}
-	pr_debug("added wait queue\n");
-	for (;;) {
-		prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE);
-		if (!test_bit(ATM_VF_WAITING, &vcc->flags) || !sigd)
-			break;
-		schedule();
-	}
-	finish_wait(sk_sleep(sk), &wait);
-	error = -xchg(&sk->sk_err_soft, 0);
-out:
-	release_sock(sk);
-	return error;
-}
-
-static int svc_dropparty(struct socket *sock, int ep_ref)
-{
-	DEFINE_WAIT(wait);
-	struct sock *sk = sock->sk;
-	struct atm_vcc *vcc = ATM_SD(sock);
-	int error;
-
-	lock_sock(sk);
-	set_bit(ATM_VF_WAITING, &vcc->flags);
-	sigd_enq2(vcc, as_dropparty, NULL, NULL, NULL, NULL, ep_ref);
-	for (;;) {
-		prepare_to_wait(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE);
-		if (!test_bit(ATM_VF_WAITING, &vcc->flags) || !sigd)
-			break;
-		schedule();
-	}
-	finish_wait(sk_sleep(sk), &wait);
-	if (!sigd) {
-		error = -EUNATCH;
-		goto out;
-	}
-	error = -xchg(&sk->sk_err_soft, 0);
-out:
-	release_sock(sk);
-	return error;
-}
-
-static int svc_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
-{
-	int error, ep_ref;
-	struct sockaddr_atmsvc sa;
-	struct atm_vcc *vcc = ATM_SD(sock);
-
-	switch (cmd) {
-	case ATM_ADDPARTY:
-		if (!test_bit(ATM_VF_SESSION, &vcc->flags))
-			return -EINVAL;
-		if (copy_from_user(&sa, (void __user *) arg, sizeof(sa)))
-			return -EFAULT;
-		error = svc_addparty(sock, (struct sockaddr *)&sa, sizeof(sa),
-				     0);
-		break;
-	case ATM_DROPPARTY:
-		if (!test_bit(ATM_VF_SESSION, &vcc->flags))
-			return -EINVAL;
-		if (copy_from_user(&ep_ref, (void __user *) arg, sizeof(int)))
-			return -EFAULT;
-		error = svc_dropparty(sock, ep_ref);
-		break;
-	default:
-		error = vcc_ioctl(sock, cmd, arg);
-	}
-
-	return error;
-}
-
-#ifdef CONFIG_COMPAT
-static int svc_compat_ioctl(struct socket *sock, unsigned int cmd,
-			    unsigned long arg)
-{
-	/* The definition of ATM_ADDPARTY uses the size of struct atm_iobuf.
-	   But actually it takes a struct sockaddr_atmsvc, which doesn't need
-	   compat handling. So all we have to do is fix up cmd... */
-	if (cmd == COMPAT_ATM_ADDPARTY)
-		cmd = ATM_ADDPARTY;
-
-	if (cmd == ATM_ADDPARTY || cmd == ATM_DROPPARTY)
-		return svc_ioctl(sock, cmd, arg);
-	else
-		return vcc_compat_ioctl(sock, cmd, arg);
-}
-#endif /* CONFIG_COMPAT */
-
-static const struct proto_ops svc_proto_ops = {
-	.family =	PF_ATMSVC,
-	.owner =	THIS_MODULE,
-
-	.release =	svc_release,
-	.bind =		svc_bind,
-	.connect =	svc_connect,
-	.socketpair =	sock_no_socketpair,
-	.accept =	svc_accept,
-	.getname =	svc_getname,
-	.poll =		vcc_poll,
-	.ioctl =	svc_ioctl,
-#ifdef CONFIG_COMPAT
-	.compat_ioctl =	svc_compat_ioctl,
-#endif
-	.gettstamp =	sock_gettstamp,
-	.listen =	svc_listen,
-	.shutdown =	svc_shutdown,
-	.setsockopt =	svc_setsockopt,
-	.getsockopt_iter = svc_getsockopt,
-	.sendmsg =	vcc_sendmsg,
-	.recvmsg =	vcc_recvmsg,
-	.mmap =		sock_no_mmap,
-};
-
-
-static int svc_create(struct net *net, struct socket *sock, int protocol,
-		      int kern)
-{
-	int error;
-
-	if (!net_eq(net, &init_net))
-		return -EAFNOSUPPORT;
-
-	sock->ops = &svc_proto_ops;
-	error = vcc_create(net, sock, protocol, AF_ATMSVC, kern);
-	if (error)
-		return error;
-	ATM_SD(sock)->local.sas_family = AF_ATMSVC;
-	ATM_SD(sock)->remote.sas_family = AF_ATMSVC;
-	return 0;
-}
-
-static const struct net_proto_family svc_family_ops = {
-	.family = PF_ATMSVC,
-	.create = svc_create,
-	.owner = THIS_MODULE,
-};
-
-
-/*
- *	Initialize the ATM SVC protocol family
- */
-
-int __init atmsvc_init(void)
-{
-	return sock_register(&svc_family_ops);
-}
-
-void atmsvc_exit(void)
-{
-	sock_unregister(PF_ATMSVC);
-}
-- 
2.54.0

[PATCH net-next 6/9] atm: remove the unused change_qos device operation

[Jakub Kicinski]

atmdev_ops::change_qos() was the hook for renegotiating the traffic
parameters of an already-connected VCC, driven from SO_ATMQOS on a
connected socket (and previously from the SVC as_modify path, now gone).
None of the ATM drivers left in tree implement it - solos-pci only listed
change_qos = NULL - so atm_change_qos() always returned -EOPNOTSUPP.

Drop the operation and return -EOPNOTSUPP directly.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
 include/linux/atmdev.h  |  1 -
 drivers/atm/solos-pci.c |  1 -
 net/atm/common.c        | 25 ++-----------------------
 3 files changed, 2 insertions(+), 25 deletions(-)

diff --git a/include/linux/atmdev.h b/include/linux/atmdev.h
index 59477676063c..218c05f2ec54 100644
--- a/include/linux/atmdev.h
+++ b/include/linux/atmdev.h
@@ -143,7 +143,6 @@ struct atmdev_ops { /* only send is required */
 	void (*phy_put)(struct atm_dev *dev,unsigned char value,
 	    unsigned long addr);
 	unsigned char (*phy_get)(struct atm_dev *dev,unsigned long addr);
-	int (*change_qos)(struct atm_vcc *vcc,struct atm_qos *qos,int flags);
 	int (*proc_read)(struct atm_dev *dev,loff_t *pos,char *page);
 	struct module *owner;
 };
diff --git a/drivers/atm/solos-pci.c b/drivers/atm/solos-pci.c
index 4ad170a858ee..9c246b956c30 100644
--- a/drivers/atm/solos-pci.c
+++ b/drivers/atm/solos-pci.c
@@ -1182,7 +1182,6 @@ static const struct atmdev_ops fpga_ops = {
 	.send =		psend,
 	.phy_put =	NULL,
 	.phy_get =	NULL,
-	.change_qos =	NULL,
 	.proc_read =	NULL,
 	.owner =	THIS_MODULE
 };
diff --git a/net/atm/common.c b/net/atm/common.c
index 650814d0a56c..44a0179d4586 100644
--- a/net/atm/common.c
+++ b/net/atm/common.c
@@ -673,28 +673,6 @@ __poll_t vcc_poll(struct file *file, struct socket *sock, poll_table *wait)
 	return mask;
 }
 
-static int atm_change_qos(struct atm_vcc *vcc, struct atm_qos *qos)
-{
-	int error;
-
-	/*
-	 * Don't let the QoS change the already connected AAL type nor the
-	 * traffic class.
-	 */
-	if (qos->aal != vcc->qos.aal ||
-	    qos->rxtp.traffic_class != vcc->qos.rxtp.traffic_class ||
-	    qos->txtp.traffic_class != vcc->qos.txtp.traffic_class)
-		return -EINVAL;
-	error = adjust_tp(&qos->txtp, qos->aal);
-	if (!error)
-		error = adjust_tp(&qos->rxtp, qos->aal);
-	if (error)
-		return error;
-	if (!vcc->dev->ops->change_qos)
-		return -EOPNOTSUPP;
-	return vcc->dev->ops->change_qos(vcc, qos, ATM_MF_SET);
-}
-
 static int check_tp(const struct atm_trafprm *tp)
 {
 	/* @@@ Should be merged with adjust_tp */
@@ -753,8 +731,9 @@ int vcc_setsockopt(struct socket *sock, int level, int optname,
 		error = check_qos(&qos);
 		if (error)
 			return error;
+		/* QoS cannot be renegotiated on an already connected VCC. */
 		if (sock->state == SS_CONNECTED)
-			return atm_change_qos(vcc, &qos);
+			return -EOPNOTSUPP;
 		if (sock->state != SS_UNCONNECTED)
 			return -EBADFD;
 		vcc->qos = qos;
-- 
2.54.0

[PATCH net-next 7/9] atm: remove the unused pre_send and send_bh device operations

[Jakub Kicinski]

atmdev_ops::pre_send (a TX pre-processing hook) and ::send_bh (a
bottom-half capable send variant) have no implementation behind them:
no remaining ATM driver sets either, so vcc_sendmsg() always skipped
pre_send and the raw AAL0/AAL5 paths always fell back to ->send().
The drivers that used these hooks were removed with the legacy ATM
adapters.

Drop both operations and the dead branches that tested for them.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
 include/linux/atmdev.h | 2 --
 net/atm/common.c       | 6 ------
 net/atm/raw.c          | 7 +------
 3 files changed, 1 insertion(+), 14 deletions(-)

diff --git a/include/linux/atmdev.h b/include/linux/atmdev.h
index 218c05f2ec54..96ce36e02247 100644
--- a/include/linux/atmdev.h
+++ b/include/linux/atmdev.h
@@ -137,9 +137,7 @@ struct atmdev_ops { /* only send is required */
 	int (*compat_ioctl)(struct atm_dev *dev,unsigned int cmd,
 			    void __user *arg);
 #endif
-	int (*pre_send)(struct atm_vcc *vcc, struct sk_buff *skb);
 	int (*send)(struct atm_vcc *vcc,struct sk_buff *skb);
-	int (*send_bh)(struct atm_vcc *vcc, struct sk_buff *skb);
 	void (*phy_put)(struct atm_dev *dev,unsigned char value,
 	    unsigned long addr);
 	unsigned char (*phy_get)(struct atm_dev *dev,unsigned long addr);
diff --git a/net/atm/common.c b/net/atm/common.c
index 44a0179d4586..654cbe3c855e 100644
--- a/net/atm/common.c
+++ b/net/atm/common.c
@@ -626,12 +626,6 @@ int vcc_sendmsg(struct socket *sock, struct msghdr *m, size_t size)
 	if (eff != size)
 		memset(skb->data + size, 0, eff-size);
 
-	if (vcc->dev->ops->pre_send) {
-		error = vcc->dev->ops->pre_send(vcc, skb);
-		if (error)
-			goto free_skb;
-	}
-
 	error = vcc->dev->ops->send(vcc, skb);
 	error = error ? error : size;
 out:
diff --git a/net/atm/raw.c b/net/atm/raw.c
index 1d6ac7b0c4e5..87d136c7554b 100644
--- a/net/atm/raw.c
+++ b/net/atm/raw.c
@@ -54,8 +54,6 @@ static int atm_send_aal0(struct atm_vcc *vcc, struct sk_buff *skb)
 		kfree_skb(skb);
 		return -EADDRNOTAVAIL;
 	}
-	if (vcc->dev->ops->send_bh)
-		return vcc->dev->ops->send_bh(vcc, skb);
 	return vcc->dev->ops->send(vcc, skb);
 }
 
@@ -71,10 +69,7 @@ int atm_init_aal5(struct atm_vcc *vcc)
 {
 	vcc->push = atm_push_raw;
 	vcc->pop = atm_pop_raw;
-	if (vcc->dev->ops->send_bh)
-		vcc->send = vcc->dev->ops->send_bh;
-	else
-		vcc->send = vcc->dev->ops->send;
+	vcc->send = vcc->dev->ops->send;
 	return 0;
 }
 EXPORT_SYMBOL(atm_init_aal5);
-- 
2.54.0

[PATCH net-next 8/9] atm: remove unused ATM PHY operations

[Jakub Kicinski]

The PHY operations are vestiges of the SAR/framer split used by the
removed PCI/SBUS ATM adapters:

 - atmdev_ops::phy_put / ::phy_get (register accessors) are never called
   by the core and solos-pci only listed them as NULL
 - struct atmphy_ops and atm_dev::phy have no users at all - nothing
   assigns or dereferences them

Remove all of them. atm_dev::phy_data is kept: solos-pci repurposes it
to stash its per-port channel index.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
 include/linux/atmdev.h  | 12 ------------
 drivers/atm/solos-pci.c |  2 --
 2 files changed, 14 deletions(-)

diff --git a/include/linux/atmdev.h b/include/linux/atmdev.h
index 96ce36e02247..fe21d2f547b5 100644
--- a/include/linux/atmdev.h
+++ b/include/linux/atmdev.h
@@ -107,8 +107,6 @@ static inline struct sock *sk_atm(struct atm_vcc *vcc)
 
 struct atm_dev {
 	const struct atmdev_ops *ops;	/* device operations; NULL if unused */
-	const struct atmphy_ops *phy;	/* PHY operations, may be undefined */
-					/* (NULL) */
 	const char	*type;		/* device type name */
 	int		number;		/* device index */
 	void		*dev_data;	/* per-device data */
@@ -138,20 +136,10 @@ struct atmdev_ops { /* only send is required */
 			    void __user *arg);
 #endif
 	int (*send)(struct atm_vcc *vcc,struct sk_buff *skb);
-	void (*phy_put)(struct atm_dev *dev,unsigned char value,
-	    unsigned long addr);
-	unsigned char (*phy_get)(struct atm_dev *dev,unsigned long addr);
 	int (*proc_read)(struct atm_dev *dev,loff_t *pos,char *page);
 	struct module *owner;
 };
 
-struct atmphy_ops {
-	int (*start)(struct atm_dev *dev);
-	int (*ioctl)(struct atm_dev *dev,unsigned int cmd,void __user *arg);
-	void (*interrupt)(struct atm_dev *dev);
-	int (*stop)(struct atm_dev *dev);
-};
-
 struct atm_skb_data {
 	struct atm_vcc	*vcc;		/* ATM VCC */
 	unsigned long	atm_options;	/* ATM layer options */
diff --git a/drivers/atm/solos-pci.c b/drivers/atm/solos-pci.c
index 9c246b956c30..fc0e91a1029e 100644
--- a/drivers/atm/solos-pci.c
+++ b/drivers/atm/solos-pci.c
@@ -1180,8 +1180,6 @@ static const struct atmdev_ops fpga_ops = {
 	.close =	pclose,
 	.ioctl =	NULL,
 	.send =		psend,
-	.phy_put =	NULL,
-	.phy_get =	NULL,
 	.proc_read =	NULL,
 	.owner =	THIS_MODULE
 };
-- 
2.54.0

[PATCH net-next 9/9] atm: remove orphaned uAPI for deleted drivers, protocols and SVCs

[Jakub Kicinski]

ATM removals have left a number of uAPI headers and ioctl
definitions with no in-kernel implementation behind them:

 - device headers for adapters deleted with the legacy PCI/SBUS drivers:
   atm_eni.h, atm_he.h, atm_idt77105.h, atm_nicstar.h, atm_zatm.h and
   the atmtcp pair atm_tcp.h / <linux/atm_tcp.h>
 - protocol headers for the removed CLIP, LANE and MPOA stacks:
   atmarp.h, atmclip.h, atmlec.h, atmmpc.h
 - atmsvc.h and the SVC / p2mp / local-address ioctls in atmdev.h
   (ATM_{GET,RST,ADD,DEL}ADDR, ATM_{ADD,DEL,GET}LECSADDR,
   ATM_{ADD,DROP}PARTY) left behind by the SVC and address-registry
   removals

None of these are referenced by any remaining in-tree code.
Let's try to delete all this. Chances are nobody cares about
these headers any more. I'm keeping this separate from the
kernel side code changes for ease of revert, in case I am
proven wrong...

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
 include/linux/atm_tcp.h           |  24 ------
 include/uapi/linux/atm_eni.h      |  24 ------
 include/uapi/linux/atm_he.h       |  21 -----
 include/uapi/linux/atm_idt77105.h |  29 -------
 include/uapi/linux/atm_nicstar.h  |  54 -------------
 include/uapi/linux/atm_tcp.h      |  62 ---------------
 include/uapi/linux/atm_zatm.h     |  47 -----------
 include/uapi/linux/atmarp.h       |  42 ----------
 include/uapi/linux/atmclip.h      |  22 ------
 include/uapi/linux/atmdev.h       |  18 -----
 include/uapi/linux/atmlec.h       |  92 ----------------------
 include/uapi/linux/atmmpc.h       | 127 ------------------------------
 include/uapi/linux/atmsvc.h       |  56 -------------
 net/atm/ioctl.c                   |   1 -
 14 files changed, 619 deletions(-)
 delete mode 100644 include/linux/atm_tcp.h
 delete mode 100644 include/uapi/linux/atm_eni.h
 delete mode 100644 include/uapi/linux/atm_he.h
 delete mode 100644 include/uapi/linux/atm_idt77105.h
 delete mode 100644 include/uapi/linux/atm_nicstar.h
 delete mode 100644 include/uapi/linux/atm_tcp.h
 delete mode 100644 include/uapi/linux/atm_zatm.h
 delete mode 100644 include/uapi/linux/atmarp.h
 delete mode 100644 include/uapi/linux/atmclip.h
 delete mode 100644 include/uapi/linux/atmlec.h
 delete mode 100644 include/uapi/linux/atmmpc.h
 delete mode 100644 include/uapi/linux/atmsvc.h

diff --git a/include/linux/atm_tcp.h b/include/linux/atm_tcp.h
deleted file mode 100644
index 2558439d849b..000000000000
--- a/include/linux/atm_tcp.h
+++ /dev/null
@@ -1,24 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/* atm_tcp.h - Driver-specific declarations of the ATMTCP driver (for use by
-	       driver-specific utilities) */
-
-/* Written 1997-2000 by Werner Almesberger, EPFL LRC/ICA */
-
-#ifndef LINUX_ATM_TCP_H
-#define LINUX_ATM_TCP_H
-
-#include <uapi/linux/atm_tcp.h>
-
-struct atm_vcc;
-struct module;
-
-struct atm_tcp_ops {
-	int (*attach)(struct atm_vcc *vcc,int itf);
-	int (*create_persistent)(int itf);
-	int (*remove_persistent)(int itf);
-	struct module *owner;
-};
-
-extern struct atm_tcp_ops atm_tcp_ops;
-
-#endif
diff --git a/include/uapi/linux/atm_eni.h b/include/uapi/linux/atm_eni.h
deleted file mode 100644
index cf5bfd1a2691..000000000000
--- a/include/uapi/linux/atm_eni.h
+++ /dev/null
@@ -1,24 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-/* atm_eni.h - Driver-specific declarations of the ENI driver (for use by
-	       driver-specific utilities) */
-
-/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
-
-
-#ifndef LINUX_ATM_ENI_H
-#define LINUX_ATM_ENI_H
-
-#include <linux/atmioc.h>
-
-
-struct eni_multipliers {
-	int tx,rx;	/* values are in percent and must be > 100 */
-};
-
-
-#define ENI_MEMDUMP     _IOW('a',ATMIOC_SARPRV,struct atmif_sioc)
-                                                /* printk memory map */
-#define ENI_SETMULT	_IOW('a',ATMIOC_SARPRV+7,struct atmif_sioc)
-						/* set buffer multipliers */
-
-#endif
diff --git a/include/uapi/linux/atm_he.h b/include/uapi/linux/atm_he.h
deleted file mode 100644
index 9f4b43293988..000000000000
--- a/include/uapi/linux/atm_he.h
+++ /dev/null
@@ -1,21 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-/* atm_he.h */
-
-#ifndef LINUX_ATM_HE_H
-#define LINUX_ATM_HE_H
-
-#include <linux/atmioc.h>
-
-#define HE_GET_REG	_IOW('a', ATMIOC_SARPRV, struct atmif_sioc)
-
-#define HE_REGTYPE_PCI	1
-#define HE_REGTYPE_RCM	2
-#define HE_REGTYPE_TCM	3
-#define HE_REGTYPE_MBOX	4
-
-struct he_ioctl_reg {
-	unsigned addr, val;
-	char type;
-};
-
-#endif /* LINUX_ATM_HE_H */
diff --git a/include/uapi/linux/atm_idt77105.h b/include/uapi/linux/atm_idt77105.h
deleted file mode 100644
index f0fd6912a14b..000000000000
--- a/include/uapi/linux/atm_idt77105.h
+++ /dev/null
@@ -1,29 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-/* atm_idt77105.h - Driver-specific declarations of the IDT77105 driver (for
- * use by driver-specific utilities) */
-
-/* Written 1999 by Greg Banks <gnb@linuxfan.com>. Copied from atm_suni.h. */
-
-
-#ifndef LINUX_ATM_IDT77105_H
-#define LINUX_ATM_IDT77105_H
-
-#include <linux/types.h>
-#include <linux/atmioc.h>
-#include <linux/atmdev.h>
-
-/*
- * Structure for IDT77105_GETSTAT and IDT77105_GETSTATZ ioctls.
- * Pointed to by `arg' in atmif_sioc.
- */
-struct idt77105_stats {
-        __u32 symbol_errors;  /* wire symbol errors */
-        __u32 tx_cells;       /* cells transmitted */
-        __u32 rx_cells;       /* cells received */
-        __u32 rx_hec_errors;  /* Header Error Check errors on receive */
-};
-
-#define IDT77105_GETSTAT	_IOW('a',ATMIOC_PHYPRV+2,struct atmif_sioc)	/* get stats */
-#define IDT77105_GETSTATZ	_IOW('a',ATMIOC_PHYPRV+3,struct atmif_sioc)	/* get stats and zero */
-
-#endif
diff --git a/include/uapi/linux/atm_nicstar.h b/include/uapi/linux/atm_nicstar.h
deleted file mode 100644
index 880d368b5b9a..000000000000
--- a/include/uapi/linux/atm_nicstar.h
+++ /dev/null
@@ -1,54 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-/******************************************************************************
- *
- * atm_nicstar.h
- *
- * Driver-specific declarations for use by NICSTAR driver specific utils.
- *
- * Author: Rui Prior
- *
- * (C) INESC 1998
- *
- ******************************************************************************/
-
-
-#ifndef LINUX_ATM_NICSTAR_H
-#define LINUX_ATM_NICSTAR_H
-
-/* Note: non-kernel programs including this file must also include
- * sys/types.h for struct timeval
- */
-
-#include <linux/atmapi.h>
-#include <linux/atmioc.h>
-
-#define NS_GETPSTAT	_IOWR('a',ATMIOC_SARPRV+1,struct atmif_sioc)
-						/* get pool statistics */
-#define NS_SETBUFLEV	_IOW('a',ATMIOC_SARPRV+2,struct atmif_sioc)
-						/* set buffer level markers */
-#define NS_ADJBUFLEV	_IO('a',ATMIOC_SARPRV+3)
-						/* adjust buffer level */
-
-typedef struct buf_nr
-{
-   unsigned min;
-   unsigned init;
-   unsigned max;
-}buf_nr;
-
-
-typedef struct pool_levels
-{
-   int buftype;
-   int count;		/* (At least for now) only used in NS_GETPSTAT */
-   buf_nr level;
-} pool_levels;
-
-/* type must be one of the following: */
-#define NS_BUFTYPE_SMALL 1
-#define NS_BUFTYPE_LARGE 2
-#define NS_BUFTYPE_HUGE 3
-#define NS_BUFTYPE_IOVEC 4
-
-
-#endif /* LINUX_ATM_NICSTAR_H */
diff --git a/include/uapi/linux/atm_tcp.h b/include/uapi/linux/atm_tcp.h
deleted file mode 100644
index 7309e1bc8867..000000000000
--- a/include/uapi/linux/atm_tcp.h
+++ /dev/null
@@ -1,62 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-/* atm_tcp.h - Driver-specific declarations of the ATMTCP driver (for use by
-	       driver-specific utilities) */
-
-/* Written 1997-2000 by Werner Almesberger, EPFL LRC/ICA */
-
-
-#ifndef _UAPILINUX_ATM_TCP_H
-#define _UAPILINUX_ATM_TCP_H
-
-#include <linux/atmapi.h>
-#include <linux/atm.h>
-#include <linux/atmioc.h>
-#include <linux/types.h>
-
-
-/*
- * All values in struct atmtcp_hdr are in network byte order
- */
-
-struct atmtcp_hdr {
-	__u16	vpi;
-	__u16	vci;
-	__u32	length;		/* ... of data part */
-};
-
-/*
- * All values in struct atmtcp_command are in host byte order
- */
-
-#define ATMTCP_HDR_MAGIC	(~0)	/* this length indicates a command */
-#define ATMTCP_CTRL_OPEN	1	/* request/reply */
-#define ATMTCP_CTRL_CLOSE	2	/* request/reply */
-
-struct atmtcp_control {
-	struct atmtcp_hdr hdr;	/* must be first */
-	int type;		/* message type; both directions */
-	atm_kptr_t vcc;		/* both directions */
-	struct sockaddr_atmpvc addr; /* suggested value from kernel */
-	struct atm_qos	qos;	/* both directions */
-	int result;		/* to kernel only */
-} __ATM_API_ALIGN;
-
-/*
- * Field usage:
- * Messge type	dir.	hdr.v?i	type	addr	qos	vcc	result
- * -----------  ----	------- ----	----	---	---	------
- * OPEN		K->D	Y	Y	Y	Y	Y	0
- * OPEN		D->K	-	Y	Y	Y	Y	Y
- * CLOSE	K->D	-	-	Y	-	Y	0
- * CLOSE	D->K	-	-	-	-	Y	Y
- */
-
-#define SIOCSIFATMTCP	_IO('a',ATMIOC_ITF)	/* set ATMTCP mode */
-#define ATMTCP_CREATE	_IO('a',ATMIOC_ITF+14)	/* create persistent ATMTCP
-						   interface */
-#define ATMTCP_REMOVE	_IO('a',ATMIOC_ITF+15)	/* destroy persistent ATMTCP
-						   interface */
-
-
-
-#endif /* _UAPILINUX_ATM_TCP_H */
diff --git a/include/uapi/linux/atm_zatm.h b/include/uapi/linux/atm_zatm.h
deleted file mode 100644
index 5135027b93c1..000000000000
--- a/include/uapi/linux/atm_zatm.h
+++ /dev/null
@@ -1,47 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-/* atm_zatm.h - Driver-specific declarations of the ZATM driver (for use by
-		driver-specific utilities) */
-
-/* Written 1995-1999 by Werner Almesberger, EPFL LRC/ICA */
-
-
-#ifndef LINUX_ATM_ZATM_H
-#define LINUX_ATM_ZATM_H
-
-/*
- * Note: non-kernel programs including this file must also include
- * sys/types.h for struct timeval
- */
-
-#include <linux/atmapi.h>
-#include <linux/atmioc.h>
-
-#define ZATM_GETPOOL	_IOW('a',ATMIOC_SARPRV+1,struct atmif_sioc)
-						/* get pool statistics */
-#define ZATM_GETPOOLZ	_IOW('a',ATMIOC_SARPRV+2,struct atmif_sioc)
-						/* get statistics and zero */
-#define ZATM_SETPOOL	_IOW('a',ATMIOC_SARPRV+3,struct atmif_sioc)
-						/* set pool parameters */
-
-struct zatm_pool_info {
-	int ref_count;			/* free buffer pool usage counters */
-	int low_water,high_water;	/* refill parameters */
-	int rqa_count,rqu_count;	/* queue condition counters */
-	int offset,next_off;		/* alignment optimizations: offset */
-	int next_cnt,next_thres;	/* repetition counter and threshold */
-};
-
-struct zatm_pool_req {
-	int pool_num;			/* pool number */
-	struct zatm_pool_info info;	/* actual information */
-};
-
-#define ZATM_OAM_POOL		0	/* free buffer pool for OAM cells */
-#define ZATM_AAL0_POOL		1	/* free buffer pool for AAL0 cells */
-#define ZATM_AAL5_POOL_BASE	2	/* first AAL5 free buffer pool */
-#define ZATM_LAST_POOL	ZATM_AAL5_POOL_BASE+10 /* max. 64 kB */
-
-#define ZATM_TIMER_HISTORY_SIZE	16	/* number of timer adjustments to
-					   record; must be 2^n */
-
-#endif
diff --git a/include/uapi/linux/atmarp.h b/include/uapi/linux/atmarp.h
deleted file mode 100644
index 8e44d121fde1..000000000000
--- a/include/uapi/linux/atmarp.h
+++ /dev/null
@@ -1,42 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-/* atmarp.h - ATM ARP protocol and kernel-demon interface definitions */
- 
-/* Written 1995-1999 by Werner Almesberger, EPFL LRC/ICA */
- 
-
-#ifndef _LINUX_ATMARP_H
-#define _LINUX_ATMARP_H
-
-#include <linux/types.h>
-#include <linux/atmapi.h>
-#include <linux/atmioc.h>
-
-
-#define ATMARP_RETRY_DELAY 30		/* request next resolution or forget
-					   NAK after 30 sec - should go into
-					   atmclip.h */
-#define ATMARP_MAX_UNRES_PACKETS 5	/* queue that many packets while
-					   waiting for the resolver */
-
-
-#define ATMARPD_CTRL	_IO('a',ATMIOC_CLIP+1)	/* become atmarpd ctrl sock */
-#define ATMARP_MKIP	_IO('a',ATMIOC_CLIP+2)	/* attach socket to IP */
-#define ATMARP_SETENTRY	_IO('a',ATMIOC_CLIP+3)	/* fill or hide ARP entry */
-#define ATMARP_ENCAP	_IO('a',ATMIOC_CLIP+5)	/* change encapsulation */
-
-
-enum atmarp_ctrl_type {
-	act_invalid,		/* catch uninitialized structures */
-	act_need,		/* need address resolution */
-	act_up,			/* interface is coming up */
-	act_down,		/* interface is going down */
-	act_change		/* interface configuration has changed */
-};
-
-struct atmarp_ctrl {
-	enum atmarp_ctrl_type	type;	/* message type */
-	int			itf_num;/* interface number (if present) */
-	__be32			ip;	/* IP address (act_need only) */
-};
-
-#endif
diff --git a/include/uapi/linux/atmclip.h b/include/uapi/linux/atmclip.h
deleted file mode 100644
index c818bb82b4e6..000000000000
--- a/include/uapi/linux/atmclip.h
+++ /dev/null
@@ -1,22 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-/* atmclip.h - Classical IP over ATM */
- 
-/* Written 1995-1998 by Werner Almesberger, EPFL LRC/ICA */
- 
-
-#ifndef LINUX_ATMCLIP_H
-#define LINUX_ATMCLIP_H
-
-#include <linux/sockios.h>
-#include <linux/atmioc.h>
-
-
-#define RFC1483LLC_LEN	8		/* LLC+OUI+PID = 8 */
-#define RFC1626_MTU	9180		/* RFC1626 default MTU */
-
-#define CLIP_DEFAULT_IDLETIMER 1200	/* 20 minutes, see RFC1755 */
-#define CLIP_CHECK_INTERVAL	 10	/* check every ten seconds */
-
-#define	SIOCMKCLIP	_IO('a',ATMIOC_CLIP)	/* create IP interface */
-
-#endif
diff --git a/include/uapi/linux/atmdev.h b/include/uapi/linux/atmdev.h
index 20b0215084fc..a94e7b8360ee 100644
--- a/include/uapi/linux/atmdev.h
+++ b/include/uapi/linux/atmdev.h
@@ -60,14 +60,6 @@ struct atm_dev_stats {
 					/* get interface type name */
 #define ATM_GETESI	_IOW('a',ATMIOC_ITF+5,struct atmif_sioc)
 					/* get interface ESI */
-#define ATM_GETADDR	_IOW('a',ATMIOC_ITF+6,struct atmif_sioc)
-					/* get itf's local ATM addr. list */
-#define ATM_RSTADDR	_IOW('a',ATMIOC_ITF+7,struct atmif_sioc)
-					/* reset itf's ATM address list */
-#define ATM_ADDADDR	_IOW('a',ATMIOC_ITF+8,struct atmif_sioc)
-					/* add a local ATM address */
-#define ATM_DELADDR	_IOW('a',ATMIOC_ITF+9,struct atmif_sioc)
-					/* remove a local ATM address */
 #define ATM_GETCIRANGE	_IOW('a',ATMIOC_ITF+10,struct atmif_sioc)
 					/* get connection identifier range */
 #define ATM_SETCIRANGE	_IOW('a',ATMIOC_ITF+11,struct atmif_sioc)
@@ -76,12 +68,6 @@ struct atm_dev_stats {
 					/* set interface ESI */
 #define ATM_SETESIF	_IOW('a',ATMIOC_ITF+13,struct atmif_sioc)
 					/* force interface ESI */
-#define ATM_ADDLECSADDR	_IOW('a', ATMIOC_ITF+14, struct atmif_sioc)
-					/* register a LECS address */
-#define ATM_DELLECSADDR	_IOW('a', ATMIOC_ITF+15, struct atmif_sioc)
-					/* unregister a LECS address */
-#define ATM_GETLECSADDR	_IOW('a', ATMIOC_ITF+16, struct atmif_sioc)
-					/* retrieve LECS address(es) */
 
 #define ATM_GETSTAT	_IOW('a',ATMIOC_SARCOM+0,struct atmif_sioc)
 					/* get AAL layer statistics */
@@ -99,10 +85,6 @@ struct atm_dev_stats {
 					/* set backend handler */
 #define ATM_NEWBACKENDIF _IOW('a',ATMIOC_SPECIAL+3,atm_backend_t)
 					/* use backend to make new if */
-#define ATM_ADDPARTY  	_IOW('a', ATMIOC_SPECIAL+4,struct atm_iobuf)
- 					/* add party to p2mp call */
-#define ATM_DROPPARTY 	_IOW('a', ATMIOC_SPECIAL+5,int)
-					/* drop party from p2mp call */
 
 /*
  * These are backend handkers that can be set via the ATM_SETBACKEND call
diff --git a/include/uapi/linux/atmlec.h b/include/uapi/linux/atmlec.h
deleted file mode 100644
index c68346bb40e6..000000000000
--- a/include/uapi/linux/atmlec.h
+++ /dev/null
@@ -1,92 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-/*
- * ATM Lan Emulation Daemon driver interface
- *
- * Marko Kiiskila <mkiiskila@yahoo.com>
- */
-
-#ifndef _ATMLEC_H_
-#define _ATMLEC_H_
-
-#include <linux/atmapi.h>
-#include <linux/atmioc.h>
-#include <linux/atm.h>
-#include <linux/if_ether.h>
-#include <linux/types.h>
-
-/* ATM lec daemon control socket */
-#define ATMLEC_CTRL	_IO('a', ATMIOC_LANE)
-#define ATMLEC_DATA	_IO('a', ATMIOC_LANE+1)
-#define ATMLEC_MCAST	_IO('a', ATMIOC_LANE+2)
-
-/* Maximum number of LEC interfaces (tweakable) */
-#define MAX_LEC_ITF 48
-
-typedef enum {
-	l_set_mac_addr,
-	l_del_mac_addr,
-	l_svc_setup,
-	l_addr_delete,
-	l_topology_change,
-	l_flush_complete,
-	l_arp_update,
-	l_narp_req,		/* LANE2 mandates the use of this */
-	l_config,
-	l_flush_tran_id,
-	l_set_lecid,
-	l_arp_xmt,
-	l_rdesc_arp_xmt,
-	l_associate_req,
-	l_should_bridge		/* should we bridge this MAC? */
-} atmlec_msg_type;
-
-#define ATMLEC_MSG_TYPE_MAX l_should_bridge
-
-struct atmlec_config_msg {
-	unsigned int maximum_unknown_frame_count;
-	unsigned int max_unknown_frame_time;
-	unsigned short max_retry_count;
-	unsigned int aging_time;
-	unsigned int forward_delay_time;
-	unsigned int arp_response_time;
-	unsigned int flush_timeout;
-	unsigned int path_switching_delay;
-	unsigned int lane_version;	/* LANE2: 1 for LANEv1, 2 for LANEv2 */
-	int mtu;
-	int is_proxy;
-};
-
-struct atmlec_msg {
-	atmlec_msg_type type;
-	int sizeoftlvs;		/* LANE2: if != 0, tlvs follow */
-	union {
-		struct {
-			unsigned char mac_addr[ETH_ALEN];
-			unsigned char atm_addr[ATM_ESA_LEN];
-			unsigned int flag;	/*
-						 * Topology_change flag,
-						 * remoteflag, permanent flag,
-						 * lecid, transaction id
-						 */
-			unsigned int targetless_le_arp;	/* LANE2 */
-			unsigned int no_source_le_narp;	/* LANE2 */
-		} normal;
-		struct atmlec_config_msg config;
-		struct {
-			__u16 lec_id;				/* requestor lec_id  */
-			__u32 tran_id;				/* transaction id    */
-			unsigned char mac_addr[ETH_ALEN];	/* dst mac addr      */
-			unsigned char atm_addr[ATM_ESA_LEN];	/* reqestor ATM addr */
-		} proxy;	/*
-				 * For mapping LE_ARP requests to responses. Filled by
-				 * zeppelin, returned by kernel. Used only when proxying
-				 */
-	} content;
-} __ATM_API_ALIGN;
-
-struct atmlec_ioc {
-	int dev_num;
-	unsigned char atm_addr[ATM_ESA_LEN];
-	unsigned char receive;	/* 1= receive vcc, 0 = send vcc */
-};
-#endif /* _ATMLEC_H_ */
diff --git a/include/uapi/linux/atmmpc.h b/include/uapi/linux/atmmpc.h
deleted file mode 100644
index cc17f4304839..000000000000
--- a/include/uapi/linux/atmmpc.h
+++ /dev/null
@@ -1,127 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-#ifndef _ATMMPC_H_
-#define _ATMMPC_H_
-
-#include <linux/atmapi.h>
-#include <linux/atmioc.h>
-#include <linux/atm.h>
-#include <linux/types.h>
-
-#define ATMMPC_CTRL _IO('a', ATMIOC_MPOA)
-#define ATMMPC_DATA _IO('a', ATMIOC_MPOA+1)
-
-#define MPC_SOCKET_INGRESS 1
-#define MPC_SOCKET_EGRESS  2
-
-struct atmmpc_ioc {
-        int dev_num;
-        __be32 ipaddr;              /* the IP address of the shortcut    */
-        int type;                     /* ingress or egress                 */
-};
-
-typedef struct in_ctrl_info {
-        __u8   Last_NHRP_CIE_code;
-        __u8   Last_Q2931_cause_value;
-        __u8   eg_MPC_ATM_addr[ATM_ESA_LEN];
-        __be32  tag;
-        __be32  in_dst_ip;      /* IP address this ingress MPC sends packets to */
-        __u16  holding_time;
-        __u32  request_id;
-} in_ctrl_info;
-
-typedef struct eg_ctrl_info {
-        __u8   DLL_header[256];
-        __u8   DH_length;
-        __be32  cache_id;
-        __be32  tag;
-        __be32  mps_ip;
-        __be32  eg_dst_ip;      /* IP address to which ingress MPC sends packets */
-        __u8   in_MPC_data_ATM_addr[ATM_ESA_LEN];
-        __u16  holding_time;
-} eg_ctrl_info;
-
-struct mpc_parameters {
-        __u16 mpc_p1;   /* Shortcut-Setup Frame Count    */
-        __u16 mpc_p2;   /* Shortcut-Setup Frame Time     */
-        __u8 mpc_p3[8]; /* Flow-detection Protocols      */
-        __u16 mpc_p4;   /* MPC Initial Retry Time        */
-        __u16 mpc_p5;   /* MPC Retry Time Maximum        */
-        __u16 mpc_p6;   /* Hold Down Time                */
-} ;
-
-struct k_message {
-        __u16 type;
-        __be32 ip_mask;
-        __u8  MPS_ctrl[ATM_ESA_LEN];
-        union {
-                in_ctrl_info in_info;
-                eg_ctrl_info eg_info;
-                struct mpc_parameters params;
-        } content;
-        struct atm_qos qos;       
-} __ATM_API_ALIGN;
-
-struct llc_snap_hdr {
-	/* RFC 1483 LLC/SNAP encapsulation for routed IP PDUs */
-        __u8  dsap;    /* Destination Service Access Point (0xAA)     */
-        __u8  ssap;    /* Source Service Access Point      (0xAA)     */
-        __u8  ui;      /* Unnumbered Information           (0x03)     */
-        __u8  org[3];  /* Organizational identification    (0x000000) */
-        __u8  type[2]; /* Ether type (for IP)              (0x0800)   */
-};
-
-/* TLVs this MPC recognizes */
-#define TLV_MPOA_DEVICE_TYPE         0x00a03e2a  
-
-/* MPOA device types in MPOA Device Type TLV */
-#define NON_MPOA    0
-#define MPS         1
-#define MPC         2
-#define MPS_AND_MPC 3
-
-
-/* MPC parameter defaults */
-
-#define MPC_P1 10  /* Shortcut-Setup Frame Count  */ 
-#define MPC_P2 1   /* Shortcut-Setup Frame Time   */
-#define MPC_P3 0   /* Flow-detection Protocols    */
-#define MPC_P4 5   /* MPC Initial Retry Time      */
-#define MPC_P5 40  /* MPC Retry Time Maximum      */
-#define MPC_P6 160 /* Hold Down Time              */
-#define HOLDING_TIME_DEFAULT 1200 /* same as MPS-p7 */
-
-/* MPC constants */
-
-#define MPC_C1 2   /* Retry Time Multiplier       */
-#define MPC_C2 60  /* Initial Keep-Alive Lifetime */
-
-/* Message types - to MPOA daemon */
-
-#define SND_MPOA_RES_RQST    201
-#define SET_MPS_CTRL_ADDR    202
-#define SND_MPOA_RES_RTRY    203 /* Different type in a retry due to req id         */
-#define STOP_KEEP_ALIVE_SM   204
-#define EGRESS_ENTRY_REMOVED 205
-#define SND_EGRESS_PURGE     206
-#define DIE                  207 /* tell the daemon to exit()                       */
-#define DATA_PLANE_PURGE     208 /* Data plane purge because of egress cache hit miss or dead MPS */
-#define OPEN_INGRESS_SVC     209
-
-/* Message types - from MPOA daemon */
-
-#define MPOA_TRIGGER_RCVD     101
-#define MPOA_RES_REPLY_RCVD   102
-#define INGRESS_PURGE_RCVD    103
-#define EGRESS_PURGE_RCVD     104
-#define MPS_DEATH             105
-#define CACHE_IMPOS_RCVD      106
-#define SET_MPC_CTRL_ADDR     107 /* Our MPC's control ATM address   */
-#define SET_MPS_MAC_ADDR      108
-#define CLEAN_UP_AND_EXIT     109
-#define SET_MPC_PARAMS        110 /* MPC configuration parameters    */
-
-/* Message types - bidirectional */       
-
-#define RELOAD                301 /* kill -HUP the daemon for reload */
-
-#endif /* _ATMMPC_H_ */
diff --git a/include/uapi/linux/atmsvc.h b/include/uapi/linux/atmsvc.h
deleted file mode 100644
index 137b5f853449..000000000000
--- a/include/uapi/linux/atmsvc.h
+++ /dev/null
@@ -1,56 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
-/* atmsvc.h - ATM signaling kernel-demon interface definitions */
- 
-/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
- 
-
-#ifndef _LINUX_ATMSVC_H
-#define _LINUX_ATMSVC_H
-
-#include <linux/atmapi.h>
-#include <linux/atm.h>
-#include <linux/atmioc.h>
-
-
-#define ATMSIGD_CTRL _IO('a',ATMIOC_SPECIAL)
-				/* become ATM signaling demon control socket */
-
-enum atmsvc_msg_type { as_catch_null, as_bind, as_connect, as_accept, as_reject,
-		       as_listen, as_okay, as_error, as_indicate, as_close,
-		       as_itf_notify, as_modify, as_identify, as_terminate,
-		       as_addparty, as_dropparty };
-
-struct atmsvc_msg {
-	enum atmsvc_msg_type type;
-	atm_kptr_t vcc;
-	atm_kptr_t listen_vcc;		/* indicate */
-	int reply;			/* for okay and close:		   */
-					/*   < 0: error before active	   */
-					/*        (sigd has discarded ctx) */
-					/*   ==0: success		   */
-				        /*   > 0: error when active (still */
-					/*        need to close)	   */
-	struct sockaddr_atmpvc pvc;	/* indicate, okay (connect) */
-	struct sockaddr_atmsvc local;	/* local SVC address */
-	struct atm_qos qos;		/* QOS parameters */
-	struct atm_sap sap;		/* SAP */
-	unsigned int session;		/* for p2pm */
-	struct sockaddr_atmsvc svc;	/* SVC address */
-} __ATM_API_ALIGN;
-
-/*
- * Message contents: see ftp://icaftp.epfl.ch/pub/linux/atm/docs/isp-*.tar.gz
- */
-
-/*
- * Some policy stuff for atmsigd and for net/atm/svc.c. Both have to agree on
- * what PCR is used to request bandwidth from the device driver. net/atm/svc.c
- * tries to do better than that, but only if there's no routing decision (i.e.
- * if signaling only uses one ATM interface).
- */
-
-#define SELECT_TOP_PCR(tp) ((tp).pcr ? (tp).pcr : \
-  (tp).max_pcr && (tp).max_pcr != ATM_MAX_PCR ? (tp).max_pcr : \
-  (tp).min_pcr ? (tp).min_pcr : ATM_MAX_PCR)
-
-#endif
diff --git a/net/atm/ioctl.c b/net/atm/ioctl.c
index 11f6d236f5d6..194587fc15e8 100644
--- a/net/atm/ioctl.c
+++ b/net/atm/ioctl.c
@@ -11,7 +11,6 @@
 #include <linux/net.h>		/* struct socket, struct proto_ops */
 #include <linux/atm.h>		/* ATM stuff */
 #include <linux/atmdev.h>
-#include <linux/atmarp.h>	/* manifest constants */
 #include <linux/capability.h>
 #include <linux/mutex.h>
 #include <asm/ioctls.h>
-- 
2.54.0