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Jakub Kicinski
aa582dc25a
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. Link: https://patch.msgid.link/20260615194416.752559-6-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
52 lines
1.5 KiB
C
52 lines
1.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/* net/atm/common.h - ATM sockets (common part for PVC and SVC) */
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/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
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#ifndef NET_ATM_COMMON_H
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#define NET_ATM_COMMON_H
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#include <linux/net.h>
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#include <linux/poll.h> /* for poll_table */
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int vcc_create(struct net *net, struct socket *sock, int protocol, int family, int kern);
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int vcc_release(struct socket *sock);
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int vcc_connect(struct socket *sock, int itf, short vpi, int vci);
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int vcc_recvmsg(struct socket *sock, struct msghdr *msg, size_t size,
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int flags);
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int vcc_sendmsg(struct socket *sock, struct msghdr *m, size_t total_len);
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__poll_t vcc_poll(struct file *file, struct socket *sock, poll_table *wait);
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int vcc_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg);
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int vcc_compat_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg);
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int vcc_setsockopt(struct socket *sock, int level, int optname,
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sockptr_t optval, unsigned int optlen);
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int vcc_getsockopt(struct socket *sock, int level, int optname,
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sockopt_t *opt);
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void vcc_process_recv_queue(struct atm_vcc *vcc);
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int atmpvc_init(void);
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void atmpvc_exit(void);
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int atm_sysfs_init(void);
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void atm_sysfs_exit(void);
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#ifdef CONFIG_PROC_FS
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int atm_proc_init(void);
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void atm_proc_exit(void);
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#else
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static inline int atm_proc_init(void)
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{
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return 0;
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}
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static inline void atm_proc_exit(void)
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{
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/* nothing */
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}
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#endif /* CONFIG_PROC_FS */
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void atm_dev_release_vccs(struct atm_dev *dev);
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#endif
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