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-rw-r--r--net/dccp/ccid.h262
1 files changed, 0 insertions, 262 deletions
diff --git a/net/dccp/ccid.h b/net/dccp/ccid.h
deleted file mode 100644
index 105f3734dadb..000000000000
--- a/net/dccp/ccid.h
+++ /dev/null
@@ -1,262 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-#ifndef _CCID_H
-#define _CCID_H
-/*
- * net/dccp/ccid.h
- *
- * An implementation of the DCCP protocol
- * Arnaldo Carvalho de Melo <acme@conectiva.com.br>
- *
- * CCID infrastructure
- */
-
-#include <net/sock.h>
-#include <linux/compiler.h>
-#include <linux/dccp.h>
-#include <linux/list.h>
-#include <linux/module.h>
-
-/* maximum value for a CCID (RFC 4340, 19.5) */
-#define CCID_MAX 255
-#define CCID_SLAB_NAME_LENGTH 32
-
-struct tcp_info;
-
-/**
- * struct ccid_operations - Interface to Congestion-Control Infrastructure
- *
- * @ccid_id: numerical CCID ID (up to %CCID_MAX, cf. table 5 in RFC 4340, 10.)
- * @ccid_ccmps: the CCMPS including network/transport headers (0 when disabled)
- * @ccid_name: alphabetical identifier string for @ccid_id
- * @ccid_hc_{r,t}x_slab: memory pool for the receiver/sender half-connection
- * @ccid_hc_{r,t}x_obj_size: size of the receiver/sender half-connection socket
- *
- * @ccid_hc_{r,t}x_init: CCID-specific initialisation routine (before startup)
- * @ccid_hc_{r,t}x_exit: CCID-specific cleanup routine (before destruction)
- * @ccid_hc_rx_packet_recv: implements the HC-receiver side
- * @ccid_hc_{r,t}x_parse_options: parsing routine for CCID/HC-specific options
- * @ccid_hc_{r,t}x_insert_options: insert routine for CCID/HC-specific options
- * @ccid_hc_tx_packet_recv: implements feedback processing for the HC-sender
- * @ccid_hc_tx_send_packet: implements the sending part of the HC-sender
- * @ccid_hc_tx_packet_sent: does accounting for packets in flight by HC-sender
- * @ccid_hc_{r,t}x_get_info: INET_DIAG information for HC-receiver/sender
- * @ccid_hc_{r,t}x_getsockopt: socket options specific to HC-receiver/sender
- */
-struct ccid_operations {
- unsigned char ccid_id;
- __u32 ccid_ccmps;
- const char *ccid_name;
- struct kmem_cache *ccid_hc_rx_slab,
- *ccid_hc_tx_slab;
- char ccid_hc_rx_slab_name[CCID_SLAB_NAME_LENGTH];
- char ccid_hc_tx_slab_name[CCID_SLAB_NAME_LENGTH];
- __u32 ccid_hc_rx_obj_size,
- ccid_hc_tx_obj_size;
- /* Interface Routines */
- int (*ccid_hc_rx_init)(struct ccid *ccid, struct sock *sk);
- int (*ccid_hc_tx_init)(struct ccid *ccid, struct sock *sk);
- void (*ccid_hc_rx_exit)(struct sock *sk);
- void (*ccid_hc_tx_exit)(struct sock *sk);
- void (*ccid_hc_rx_packet_recv)(struct sock *sk,
- struct sk_buff *skb);
- int (*ccid_hc_rx_parse_options)(struct sock *sk, u8 pkt,
- u8 opt, u8 *val, u8 len);
- int (*ccid_hc_rx_insert_options)(struct sock *sk,
- struct sk_buff *skb);
- void (*ccid_hc_tx_packet_recv)(struct sock *sk,
- struct sk_buff *skb);
- int (*ccid_hc_tx_parse_options)(struct sock *sk, u8 pkt,
- u8 opt, u8 *val, u8 len);
- int (*ccid_hc_tx_send_packet)(struct sock *sk,
- struct sk_buff *skb);
- void (*ccid_hc_tx_packet_sent)(struct sock *sk,
- unsigned int len);
- void (*ccid_hc_rx_get_info)(struct sock *sk,
- struct tcp_info *info);
- void (*ccid_hc_tx_get_info)(struct sock *sk,
- struct tcp_info *info);
- int (*ccid_hc_rx_getsockopt)(struct sock *sk,
- const int optname, int len,
- u32 __user *optval,
- int __user *optlen);
- int (*ccid_hc_tx_getsockopt)(struct sock *sk,
- const int optname, int len,
- u32 __user *optval,
- int __user *optlen);
-};
-
-extern struct ccid_operations ccid2_ops;
-#ifdef CONFIG_IP_DCCP_CCID3
-extern struct ccid_operations ccid3_ops;
-#endif
-
-int ccid_initialize_builtins(void);
-void ccid_cleanup_builtins(void);
-
-struct ccid {
- struct ccid_operations *ccid_ops;
- char ccid_priv[];
-};
-
-static inline void *ccid_priv(const struct ccid *ccid)
-{
- return (void *)ccid->ccid_priv;
-}
-
-bool ccid_support_check(u8 const *ccid_array, u8 array_len);
-int ccid_get_builtin_ccids(u8 **ccid_array, u8 *array_len);
-int ccid_getsockopt_builtin_ccids(struct sock *sk, int len,
- char __user *, int __user *);
-
-struct ccid *ccid_new(const u8 id, struct sock *sk, bool rx);
-
-static inline int ccid_get_current_rx_ccid(struct dccp_sock *dp)
-{
- struct ccid *ccid = dp->dccps_hc_rx_ccid;
-
- if (ccid == NULL || ccid->ccid_ops == NULL)
- return -1;
- return ccid->ccid_ops->ccid_id;
-}
-
-static inline int ccid_get_current_tx_ccid(struct dccp_sock *dp)
-{
- struct ccid *ccid = dp->dccps_hc_tx_ccid;
-
- if (ccid == NULL || ccid->ccid_ops == NULL)
- return -1;
- return ccid->ccid_ops->ccid_id;
-}
-
-void ccid_hc_rx_delete(struct ccid *ccid, struct sock *sk);
-void ccid_hc_tx_delete(struct ccid *ccid, struct sock *sk);
-
-/*
- * Congestion control of queued data packets via CCID decision.
- *
- * The TX CCID performs its congestion-control by indicating whether and when a
- * queued packet may be sent, using the return code of ccid_hc_tx_send_packet().
- * The following modes are supported via the symbolic constants below:
- * - timer-based pacing (CCID returns a delay value in milliseconds);
- * - autonomous dequeueing (CCID internally schedules dccps_xmitlet).
- */
-
-enum ccid_dequeueing_decision {
- CCID_PACKET_SEND_AT_ONCE = 0x00000, /* "green light": no delay */
- CCID_PACKET_DELAY_MAX = 0x0FFFF, /* maximum delay in msecs */
- CCID_PACKET_DELAY = 0x10000, /* CCID msec-delay mode */
- CCID_PACKET_WILL_DEQUEUE_LATER = 0x20000, /* CCID autonomous mode */
- CCID_PACKET_ERR = 0xF0000, /* error condition */
-};
-
-static inline int ccid_packet_dequeue_eval(const int return_code)
-{
- if (return_code < 0)
- return CCID_PACKET_ERR;
- if (return_code == 0)
- return CCID_PACKET_SEND_AT_ONCE;
- if (return_code <= CCID_PACKET_DELAY_MAX)
- return CCID_PACKET_DELAY;
- return return_code;
-}
-
-static inline int ccid_hc_tx_send_packet(struct ccid *ccid, struct sock *sk,
- struct sk_buff *skb)
-{
- if (ccid->ccid_ops->ccid_hc_tx_send_packet != NULL)
- return ccid->ccid_ops->ccid_hc_tx_send_packet(sk, skb);
- return CCID_PACKET_SEND_AT_ONCE;
-}
-
-static inline void ccid_hc_tx_packet_sent(struct ccid *ccid, struct sock *sk,
- unsigned int len)
-{
- if (ccid->ccid_ops->ccid_hc_tx_packet_sent != NULL)
- ccid->ccid_ops->ccid_hc_tx_packet_sent(sk, len);
-}
-
-static inline void ccid_hc_rx_packet_recv(struct ccid *ccid, struct sock *sk,
- struct sk_buff *skb)
-{
- if (ccid->ccid_ops->ccid_hc_rx_packet_recv != NULL)
- ccid->ccid_ops->ccid_hc_rx_packet_recv(sk, skb);
-}
-
-static inline void ccid_hc_tx_packet_recv(struct ccid *ccid, struct sock *sk,
- struct sk_buff *skb)
-{
- if (ccid->ccid_ops->ccid_hc_tx_packet_recv != NULL)
- ccid->ccid_ops->ccid_hc_tx_packet_recv(sk, skb);
-}
-
-/**
- * ccid_hc_tx_parse_options - Parse CCID-specific options sent by the receiver
- * @pkt: type of packet that @opt appears on (RFC 4340, 5.1)
- * @opt: the CCID-specific option type (RFC 4340, 5.8 and 10.3)
- * @val: value of @opt
- * @len: length of @val in bytes
- */
-static inline int ccid_hc_tx_parse_options(struct ccid *ccid, struct sock *sk,
- u8 pkt, u8 opt, u8 *val, u8 len)
-{
- if (!ccid || !ccid->ccid_ops->ccid_hc_tx_parse_options)
- return 0;
- return ccid->ccid_ops->ccid_hc_tx_parse_options(sk, pkt, opt, val, len);
-}
-
-/**
- * ccid_hc_rx_parse_options - Parse CCID-specific options sent by the sender
- * Arguments are analogous to ccid_hc_tx_parse_options()
- */
-static inline int ccid_hc_rx_parse_options(struct ccid *ccid, struct sock *sk,
- u8 pkt, u8 opt, u8 *val, u8 len)
-{
- if (!ccid || !ccid->ccid_ops->ccid_hc_rx_parse_options)
- return 0;
- return ccid->ccid_ops->ccid_hc_rx_parse_options(sk, pkt, opt, val, len);
-}
-
-static inline int ccid_hc_rx_insert_options(struct ccid *ccid, struct sock *sk,
- struct sk_buff *skb)
-{
- if (ccid->ccid_ops->ccid_hc_rx_insert_options != NULL)
- return ccid->ccid_ops->ccid_hc_rx_insert_options(sk, skb);
- return 0;
-}
-
-static inline void ccid_hc_rx_get_info(struct ccid *ccid, struct sock *sk,
- struct tcp_info *info)
-{
- if (ccid->ccid_ops->ccid_hc_rx_get_info != NULL)
- ccid->ccid_ops->ccid_hc_rx_get_info(sk, info);
-}
-
-static inline void ccid_hc_tx_get_info(struct ccid *ccid, struct sock *sk,
- struct tcp_info *info)
-{
- if (ccid->ccid_ops->ccid_hc_tx_get_info != NULL)
- ccid->ccid_ops->ccid_hc_tx_get_info(sk, info);
-}
-
-static inline int ccid_hc_rx_getsockopt(struct ccid *ccid, struct sock *sk,
- const int optname, int len,
- u32 __user *optval, int __user *optlen)
-{
- int rc = -ENOPROTOOPT;
- if (ccid != NULL && ccid->ccid_ops->ccid_hc_rx_getsockopt != NULL)
- rc = ccid->ccid_ops->ccid_hc_rx_getsockopt(sk, optname, len,
- optval, optlen);
- return rc;
-}
-
-static inline int ccid_hc_tx_getsockopt(struct ccid *ccid, struct sock *sk,
- const int optname, int len,
- u32 __user *optval, int __user *optlen)
-{
- int rc = -ENOPROTOOPT;
- if (ccid != NULL && ccid->ccid_ops->ccid_hc_tx_getsockopt != NULL)
- rc = ccid->ccid_ops->ccid_hc_tx_getsockopt(sk, optname, len,
- optval, optlen);
- return rc;
-}
-#endif /* _CCID_H */
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