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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 | #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 * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #include <net/sock.h> #include <linux/compiler.h> #include <linux/dccp.h> #include <linux/list.h> #include <linux/module.h> #define CCID_MAX 255 struct tcp_info; struct ccid_operations { unsigned char ccid_id; const char *ccid_name; struct module *ccid_owner; struct kmem_cache *ccid_hc_rx_slab; __u32 ccid_hc_rx_obj_size; struct kmem_cache *ccid_hc_tx_slab; __u32 ccid_hc_tx_obj_size; 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, unsigned char option, unsigned char len, u16 idx, unsigned char* value); 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, unsigned char option, unsigned char len, u16 idx, unsigned char* value); int (*ccid_hc_tx_send_packet)(struct sock *sk, struct sk_buff *skb); void (*ccid_hc_tx_packet_sent)(struct sock *sk, int more, 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 int ccid_register(struct ccid_operations *ccid_ops); extern int ccid_unregister(struct ccid_operations *ccid_ops); struct ccid { struct ccid_operations *ccid_ops; char ccid_priv[0]; }; static inline void *ccid_priv(const struct ccid *ccid) { return (void *)ccid->ccid_priv; } extern struct ccid *ccid_new(unsigned char id, struct sock *sk, int rx, gfp_t gfp); extern struct ccid *ccid_hc_rx_new(unsigned char id, struct sock *sk, gfp_t gfp); extern struct ccid *ccid_hc_tx_new(unsigned char id, struct sock *sk, gfp_t gfp); extern void ccid_hc_rx_delete(struct ccid *ccid, struct sock *sk); extern void ccid_hc_tx_delete(struct ccid *ccid, struct sock *sk); static inline int ccid_hc_tx_send_packet(struct ccid *ccid, struct sock *sk, struct sk_buff *skb) { int rc = 0; if (ccid->ccid_ops->ccid_hc_tx_send_packet != NULL) rc = ccid->ccid_ops->ccid_hc_tx_send_packet(sk, skb); return rc; } static inline void ccid_hc_tx_packet_sent(struct ccid *ccid, struct sock *sk, int more, unsigned int len) { if (ccid->ccid_ops->ccid_hc_tx_packet_sent != NULL) ccid->ccid_ops->ccid_hc_tx_packet_sent(sk, more, 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); } static inline int ccid_hc_tx_parse_options(struct ccid *ccid, struct sock *sk, unsigned char option, unsigned char len, u16 idx, unsigned char* value) { int rc = 0; if (ccid->ccid_ops->ccid_hc_tx_parse_options != NULL) rc = ccid->ccid_ops->ccid_hc_tx_parse_options(sk, option, len, idx, value); return rc; } static inline int ccid_hc_rx_parse_options(struct ccid *ccid, struct sock *sk, unsigned char option, unsigned char len, u16 idx, unsigned char* value) { int rc = 0; if (ccid->ccid_ops->ccid_hc_rx_parse_options != NULL) rc = ccid->ccid_ops->ccid_hc_rx_parse_options(sk, option, len, idx, value); return rc; } 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->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->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 */ |