| 1 | /* |
| 2 | * Copyright (c) 1980, 1986, 1989, 1993 |
| 3 | * The Regents of the University of California. 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 the University of |
| 16 | * California, Berkeley and its contributors. |
| 17 | * 4. Neither the name of the University nor the names of its contributors |
| 18 | * may be used to endorse or promote products derived from this software |
| 19 | * without specific prior written permission. |
| 20 | * |
| 21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 31 | * SUCH DAMAGE. |
| 32 | * |
| 33 | * @(#)netisr.h 8.1 (Berkeley) 6/10/93 |
| 34 | * $FreeBSD: src/sys/net/netisr.h,v 1.21.2.5 2002/02/09 23:02:39 luigi Exp $ |
| 35 | * $DragonFly: src/sys/net/netisr.h,v 1.14 2004/04/10 09:35:34 hsu Exp $ |
| 36 | */ |
| 37 | |
| 38 | #ifndef _NET_NETISR_H_ |
| 39 | #define _NET_NETISR_H_ |
| 40 | |
| 41 | #include <sys/msgport.h> |
| 42 | |
| 43 | /* |
| 44 | * The networking code runs off software interrupts. |
| 45 | * |
| 46 | * You can switch into the network by doing splnet() and return by splx(). |
| 47 | * The software interrupt level for the network is higher than the software |
| 48 | * level for the clock (so you can enter the network in routines called |
| 49 | * at timeout time). |
| 50 | */ |
| 51 | |
| 52 | /* |
| 53 | * Each ``pup-level-1'' input queue has a bit in a ``netisr'' status |
| 54 | * word which is used to de-multiplex a single software |
| 55 | * interrupt used for scheduling the network code to calls |
| 56 | * on the lowest level routine of each protocol. |
| 57 | */ |
| 58 | #define NETISR_RESERVED0 0 /* cannot be used */ |
| 59 | #define NETISR_POLL 1 /* polling callback */ |
| 60 | #define NETISR_IP 2 /* same as AF_INET */ |
| 61 | #define NETISR_NS 6 /* same as AF_NS */ |
| 62 | #define NETISR_AARP 15 /* Appletalk ARP */ |
| 63 | #define NETISR_ATALK2 16 /* Appletalk phase 2 */ |
| 64 | #define NETISR_ATALK1 17 /* Appletalk phase 1 */ |
| 65 | #define NETISR_ARP 18 /* same as AF_LINK */ |
| 66 | #define NETISR_IPX 23 /* same as AF_IPX */ |
| 67 | #define NETISR_USB 25 /* USB soft interrupt */ |
| 68 | #define NETISR_PPP 27 /* PPP soft interrupt */ |
| 69 | #define NETISR_IPV6 28 /* same as AF_INET6 */ |
| 70 | #define NETISR_NATM 29 /* same as AF_NATM */ |
| 71 | #define NETISR_NETGRAPH 30 /* same as AF_NETGRAPH */ |
| 72 | #define NETISR_POLLMORE 31 /* check if we need more polling */ |
| 73 | |
| 74 | #define NETISR_MAX 32 |
| 75 | |
| 76 | TAILQ_HEAD(notifymsglist, netmsg_so_notify); |
| 77 | |
| 78 | #ifdef _KERNEL |
| 79 | |
| 80 | #include <sys/protosw.h> |
| 81 | |
| 82 | struct netmsg; |
| 83 | |
| 84 | typedef void (*netisr_fn_t)(struct netmsg *); |
| 85 | typedef boolean_t (*msg_predicate_fn_t)(struct netmsg *); |
| 86 | |
| 87 | /* |
| 88 | * Base class. All net messages must start with the same fields. |
| 89 | */ |
| 90 | struct netmsg { |
| 91 | struct lwkt_msg nm_lmsg; |
| 92 | netisr_fn_t nm_handler; |
| 93 | }; |
| 94 | |
| 95 | struct netmsg_packet { |
| 96 | struct lwkt_msg nm_lmsg; |
| 97 | netisr_fn_t nm_handler; |
| 98 | struct mbuf *nm_packet; |
| 99 | }; |
| 100 | |
| 101 | struct netmsg_pr_ctloutput { |
| 102 | struct lwkt_msg nm_lmsg; |
| 103 | netisr_fn_t nm_handler; |
| 104 | int (*nm_prfn) (struct socket *, struct sockopt *); |
| 105 | struct socket *nm_so; |
| 106 | struct sockopt *nm_sopt; |
| 107 | }; |
| 108 | |
| 109 | struct netmsg_pr_timeout { |
| 110 | struct lwkt_msg nm_lmsg; |
| 111 | netisr_fn_t nm_handler; |
| 112 | void (*nm_prfn) (void); |
| 113 | }; |
| 114 | |
| 115 | struct netmsg_so_notify { |
| 116 | struct lwkt_msg nm_lmsg; |
| 117 | netisr_fn_t nm_handler; |
| 118 | msg_predicate_fn_t nm_predicate; |
| 119 | struct socket *nm_so; |
| 120 | int nm_etype; /* receive or send event */ |
| 121 | TAILQ_ENTRY(netmsg_so_notify) nm_list; |
| 122 | }; |
| 123 | |
| 124 | #define NM_REVENT 0x1 /* event on receive buffer */ |
| 125 | #define NM_SEVENT 0x2 /* event on send buffer */ |
| 126 | |
| 127 | /* |
| 128 | * for dispatching pr_ functions, |
| 129 | * until they can be converted to message-passing |
| 130 | */ |
| 131 | void netmsg_pr_dispatcher(struct netmsg *); |
| 132 | |
| 133 | #define CMD_NETMSG_NEWPKT (MSG_CMD_NETMSG | 0x0001) |
| 134 | #define CMD_NETMSG_POLL (MSG_CMD_NETMSG | 0x0002) |
| 135 | |
| 136 | #define CMD_NETMSG_PRU_ABORT (MSG_CMD_NETMSG | 0x0003) |
| 137 | #define CMD_NETMSG_PRU_ACCEPT (MSG_CMD_NETMSG | 0x0004) |
| 138 | #define CMD_NETMSG_PRU_ATTACH (MSG_CMD_NETMSG | 0x0005) |
| 139 | #define CMD_NETMSG_PRU_BIND (MSG_CMD_NETMSG | 0x0006) |
| 140 | #define CMD_NETMSG_PRU_CONNECT (MSG_CMD_NETMSG | 0x0007) |
| 141 | #define CMD_NETMSG_PRU_CONNECT2 (MSG_CMD_NETMSG | 0x0008) |
| 142 | #define CMD_NETMSG_PRU_CONTROL (MSG_CMD_NETMSG | 0x0009) |
| 143 | #define CMD_NETMSG_PRU_DETACH (MSG_CMD_NETMSG | 0x000a) |
| 144 | #define CMD_NETMSG_PRU_DISCONNECT (MSG_CMD_NETMSG | 0x000b) |
| 145 | #define CMD_NETMSG_PRU_LISTEN (MSG_CMD_NETMSG | 0x000c) |
| 146 | #define CMD_NETMSG_PRU_PEERADDR (MSG_CMD_NETMSG | 0x000d) |
| 147 | #define CMD_NETMSG_PRU_RCVD (MSG_CMD_NETMSG | 0x000e) |
| 148 | #define CMD_NETMSG_PRU_RCVOOB (MSG_CMD_NETMSG | 0x000f) |
| 149 | #define CMD_NETMSG_PRU_SEND (MSG_CMD_NETMSG | 0x0010) |
| 150 | #define CMD_NETMSG_PRU_SENSE (MSG_CMD_NETMSG | 0x0011) |
| 151 | #define CMD_NETMSG_PRU_SHUTDOWN (MSG_CMD_NETMSG | 0x0012) |
| 152 | #define CMD_NETMSG_PRU_SOCKADDR (MSG_CMD_NETMSG | 0x0013) |
| 153 | #define CMD_NETMSG_PRU_SOSEND (MSG_CMD_NETMSG | 0x0014) |
| 154 | #define CMD_NETMSG_PRU_SORECEIVE (MSG_CMD_NETMSG | 0x0015) |
| 155 | #define CMD_NETMSG_PRU_SOPOLL (MSG_CMD_NETMSG | 0x0016) |
| 156 | |
| 157 | #define CMD_NETMSG_PR_CTLOUTPUT (MSG_CMD_NETMSG | 0x0017) |
| 158 | #define CMD_NETMSG_PR_TIMEOUT (MSG_CMD_NETMSG | 0x0018) |
| 159 | |
| 160 | #define CMD_NETMSG_ONCPU (MSG_CMD_NETMSG | 0x0019) |
| 161 | #define CMD_NETMSG_NOTIFY (MSG_CMD_NETMSG | 0x0020) |
| 162 | |
| 163 | void msg_notify_handler(struct netmsg *); |
| 164 | |
| 165 | typedef lwkt_port_t (*lwkt_portfn_t)(struct mbuf *); |
| 166 | |
| 167 | struct netisr { |
| 168 | lwkt_port ni_port; /* must be first */ |
| 169 | lwkt_portfn_t ni_mport; |
| 170 | netisr_fn_t ni_handler; |
| 171 | }; |
| 172 | |
| 173 | extern lwkt_port netisr_afree_rport; |
| 174 | |
| 175 | lwkt_port_t cpu0_portfn(struct mbuf *m); |
| 176 | void netisr_dispatch(int, struct mbuf *); |
| 177 | int netisr_queue(int, struct mbuf *); |
| 178 | void netisr_register(int, lwkt_portfn_t, netisr_fn_t); |
| 179 | int netisr_unregister(int); |
| 180 | void netmsg_service_loop(void *arg); |
| 181 | void schednetisr(int); |
| 182 | |
| 183 | #endif /* KERNEL */ |
| 184 | |
| 185 | #endif /* _NET_NETISR_H_ */ |