1 /* 2 * Copyright (c) 2003 Jeffrey Hsu 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by Jeffrey M. Hsu. 16 * 4. The name of the author may not be used to endorse or promote products 17 * derived from this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 * 30 * $DragonFly: src/sys/net/netmsg.h,v 1.10 2008/10/27 02:56:30 sephe Exp $ 31 */ 32 33 #ifndef _NET_NETMSG_H_ 34 #define _NET_NETMSG_H_ 35 36 #ifndef _SYS_THREAD_H_ 37 #include <sys/thread.h> 38 #endif 39 #ifndef _SYS_PROTOSW_H_ 40 #include <sys/protosw.h> 41 #endif 42 43 struct pktinfo; 44 45 typedef void (*netisr_fn_t)(netmsg_t); 46 typedef void (*netisr_ru_t)(void); 47 typedef void (*netisr_cpufn_t)(struct mbuf **, int); 48 typedef void (*netisr_hashck_t)(struct mbuf *, const struct pktinfo *); 49 50 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES) 51 52 /* 53 * The base netmsg prefixes all netmsgs and includes an embedded LWKT 54 * message. 55 */ 56 struct netmsg_base { 57 struct lwkt_msg lmsg; 58 netisr_fn_t nm_dispatch; 59 struct socket *nm_so; 60 }; 61 62 typedef struct netmsg_base *netmsg_base_t; 63 64 /* 65 * NETISR messages 66 * 67 * NOTE: netmsg_packet is embedded in mbufs. 68 */ 69 TAILQ_HEAD(notifymsglist, netmsg_so_notify); 70 71 struct netmsg_packet { 72 struct netmsg_base base; 73 struct mbuf *nm_packet; 74 int nm_nxt; 75 }; 76 77 struct netmsg_pr_timeout { 78 struct netmsg_base base; 79 }; 80 81 struct netmsg_so_notify; 82 typedef __boolean_t (*msg_predicate_fn_t)(struct netmsg_so_notify *); 83 84 struct netmsg_so_notify { 85 struct netmsg_base base; 86 msg_predicate_fn_t nm_predicate; 87 int nm_fflags; /* flags e.g. FNONBLOCK */ 88 int nm_etype; /* receive or send event */ 89 TAILQ_ENTRY(netmsg_so_notify) nm_list; 90 }; 91 92 struct netmsg_so_notify_abort { 93 struct netmsg_base base; 94 struct netmsg_so_notify *nm_notifymsg; 95 }; 96 97 #define NM_REVENT 0x1 /* event on receive buffer */ 98 #define NM_SEVENT 0x2 /* event on send buffer */ 99 100 /* 101 * User protocol requests messages. 102 */ 103 struct netmsg_pru_abort { 104 struct netmsg_base base; 105 }; 106 107 struct netmsg_pru_accept { 108 struct netmsg_base base; 109 struct sockaddr **nm_nam; 110 }; 111 112 struct netmsg_pru_attach { 113 struct netmsg_base base; 114 int nm_proto; 115 struct pru_attach_info *nm_ai; 116 }; 117 118 struct netmsg_pru_bind { 119 struct netmsg_base base; 120 struct sockaddr *nm_nam; 121 struct thread *nm_td; 122 }; 123 124 struct netmsg_pru_connect { 125 struct netmsg_base base; 126 struct sockaddr *nm_nam; 127 struct thread *nm_td; 128 struct mbuf *nm_m; /* connect with send */ 129 int nm_flags; /* connect with send */ 130 int nm_reconnect; /* message control */ 131 }; 132 133 #define NMSG_RECONNECT_RECONNECT 0x0001 /* thread port change */ 134 #define NMSG_RECONNECT_NAMALLOC 0x0002 /* nm_nam allocated */ 135 #define NMSG_RECONNECT_PUSH 0x0004 /* call tcp_output */ 136 #define NMSG_RECONNECT_FALLBACK 0x0008 /* fallback to ipv4 */ 137 138 struct netmsg_pru_connect2 { 139 struct netmsg_base base; 140 struct socket *nm_so1; 141 struct socket *nm_so2; 142 }; 143 144 struct netmsg_pru_control { 145 struct netmsg_base base; 146 u_long nm_cmd; 147 caddr_t nm_data; 148 struct ifnet *nm_ifp; 149 struct thread *nm_td; 150 }; 151 152 struct netmsg_pru_detach { 153 struct netmsg_base base; 154 }; 155 156 struct netmsg_pru_disconnect { 157 struct netmsg_base base; 158 }; 159 160 struct netmsg_pru_listen { 161 struct netmsg_base base; 162 struct thread *nm_td; 163 }; 164 165 struct netmsg_pru_peeraddr { 166 struct netmsg_base base; 167 struct sockaddr **nm_nam; 168 }; 169 170 struct netmsg_pru_rcvd { 171 struct netmsg_base base; 172 int nm_flags; 173 }; 174 175 struct netmsg_pru_rcvoob { 176 struct netmsg_base base; 177 struct mbuf *nm_m; 178 int nm_flags; 179 }; 180 181 struct netmsg_pru_send { 182 struct netmsg_base base; 183 int nm_flags; /* PRUS_xxx */ 184 struct mbuf *nm_m; 185 struct sockaddr *nm_addr; 186 struct mbuf *nm_control; 187 struct thread *nm_td; 188 /* 189 * XXX hack to be 100% certain netmsg_pru_send can be overwritten 190 * by netmsg_pru_connect 191 */ 192 char nm_dummy[sizeof(struct netmsg_pru_connect) - 193 sizeof(struct netmsg_base)]; 194 }; 195 196 #define PRUS_OOB 0x1 197 #define PRUS_EOF 0x2 198 #define PRUS_MORETOCOME 0x4 199 #define PRUS_NAMALLOC 0x8 200 201 struct netmsg_pru_sense { 202 struct netmsg_base base; 203 struct stat *nm_stat; 204 }; 205 206 struct netmsg_pru_shutdown { 207 struct netmsg_base base; 208 }; 209 210 struct netmsg_pru_sockaddr { 211 struct netmsg_base base; 212 struct sockaddr **nm_nam; 213 }; 214 215 struct netmsg_pru_sosend { 216 struct netmsg_base base; 217 struct sockaddr *nm_addr; 218 struct uio *nm_uio; 219 struct mbuf *nm_top; 220 struct mbuf *nm_control; 221 int nm_flags; 222 struct thread *nm_td; 223 }; 224 225 struct netmsg_pru_soreceive { 226 struct netmsg_base base; 227 struct sockaddr *nm_addr; 228 struct sockaddr **nm_paddr; 229 struct uio *nm_uio; 230 struct sockbuf *nm_sio; 231 struct mbuf **nm_controlp; 232 int *nm_flagsp; 233 }; 234 235 struct netmsg_pr_ctloutput { 236 struct netmsg_base base; 237 struct sockopt *nm_sopt; 238 }; 239 240 struct netmsg_pru_ctlinput { 241 struct netmsg_base base; 242 int nm_cmd; 243 struct sockaddr *nm_arg; 244 void *nm_extra; 245 }; 246 247 /* 248 * Union of all possible netmsgs. Note that when a netmsg is sent the 249 * actual allocated storage is likely only the size of the particular 250 * class of message, and not sizeof(union netmsg). 251 */ 252 union netmsg { 253 struct lwkt_msg lmsg; /* base embedded */ 254 struct netmsg_base base; /* base embedded */ 255 256 struct netmsg_packet packet; /* mbuf embedded */ 257 struct netmsg_pr_timeout timeout; 258 struct netmsg_so_notify notify; 259 struct netmsg_so_notify_abort notify_abort; 260 261 struct netmsg_pr_ctloutput ctloutput; 262 263 struct netmsg_pru_abort abort; 264 struct netmsg_pru_accept accept; /* synchronous */ 265 struct netmsg_pru_attach attach; 266 struct netmsg_pru_bind bind; 267 struct netmsg_pru_connect connect; 268 struct netmsg_pru_connect2 connect2; 269 struct netmsg_pru_control control; /* synchronous */ 270 struct netmsg_pru_detach detach; 271 struct netmsg_pru_disconnect disconnect; 272 struct netmsg_pru_listen listen; 273 struct netmsg_pru_peeraddr peeraddr; 274 struct netmsg_pru_rcvd rcvd; 275 struct netmsg_pru_rcvoob rcvoob; 276 struct netmsg_pru_send send; 277 struct netmsg_pru_sense sense; 278 struct netmsg_pru_shutdown shutdown; 279 struct netmsg_pru_sockaddr sockaddr; 280 struct netmsg_pru_sosend sosend; /* synchronous */ 281 struct netmsg_pru_soreceive soreceive; /* synchronous */ 282 struct netmsg_pru_ctlinput ctlinput; 283 }; 284 285 #endif /* _KERNEL || _KERNEL_STRUCTURES */ 286 287 #endif /* !_NET_NETMSG_H_ */ 288