d374e81efd
following the protocol pru_listen() call to solisten_proto(), so that it occurs under the socket lock acquisition that also sets SO_ACCEPTCONN. This requires passing the new backlog parameter to the protocol, which also allows the protocol to be aware of changes in queue limit should it wish to do something about the new queue limit. This continues a move towards the socket layer acting as a library for the protocol. Bump __FreeBSD_version due to a change in the in-kernel protocol interface. This change has been tested with IPv4 and UNIX domain sockets, but not other protocols.
814 lines
14 KiB
C
814 lines
14 KiB
C
/*-
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* ===================================
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* HARP | Host ATM Research Platform
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* ===================================
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*
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*
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* This Host ATM Research Platform ("HARP") file (the "Software") is
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* made available by Network Computing Services, Inc. ("NetworkCS")
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* "AS IS". NetworkCS does not provide maintenance, improvements or
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* support of any kind.
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*
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* NETWORKCS MAKES NO WARRANTIES OR REPRESENTATIONS, EXPRESS OR IMPLIED,
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* INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS FOR A PARTICULAR PURPOSE, AS TO ANY ELEMENT OF THE
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* SOFTWARE OR ANY SUPPORT PROVIDED IN CONNECTION WITH THIS SOFTWARE.
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* In no event shall NetworkCS be responsible for any damages, including
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* but not limited to consequential damages, arising from or relating to
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* any use of the Software or related support.
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*
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* Copyright 1994-1998 Network Computing Services, Inc.
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*
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* Copies of this Software may be made, however, the above copyright
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* notice must be reproduced on all copies.
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*/
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/*
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* IP Over ATM Support
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* -------------------
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*
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* Support for running as a loadable kernel module
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#ifndef ATM_IP_MODULE
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#include "opt_atm.h"
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#endif
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/errno.h>
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#include <sys/time.h>
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#include <sys/kernel.h>
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#include <sys/socket.h>
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#include <sys/socketvar.h>
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#include <sys/syslog.h>
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#include <sys/kernel.h>
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#include <sys/sysctl.h>
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#include <net/if.h>
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#include <netinet/in.h>
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#include <netinet/in_var.h>
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#include <netatm/port.h>
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#include <netatm/queue.h>
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#include <netatm/atm.h>
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#include <netatm/atm_sys.h>
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#include <netatm/atm_sap.h>
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#include <netatm/atm_cm.h>
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#include <netatm/atm_if.h>
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#include <netatm/atm_stack.h>
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#include <netatm/atm_pcb.h>
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#include <netatm/atm_var.h>
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#include <netatm/ipatm/ipatm.h>
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#include <netatm/ipatm/ipatm_var.h>
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#include <vm/uma.h>
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/*
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* Global variables
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*/
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int ipatm_vccnt = 0;
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int ipatm_vcidle = IPATM_VCIDLE;
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u_long last_map_ipdst = 0;
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struct ipvcc* last_map_ipvcc = NULL;
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struct ip_nif *ipatm_nif_head = NULL;
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struct ipatm_stat ipatm_stat = {0};
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struct atm_time ipatm_itimer = {0, 0}; /* VCC idle timer */
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Atm_endpoint ipatm_endpt = {
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NULL,
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ENDPT_IP,
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ipatm_ioctl,
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ipatm_getname,
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ipatm_connected,
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ipatm_cleared,
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ipatm_incoming,
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NULL,
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NULL,
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NULL,
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ipatm_cpcs_data,
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NULL,
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NULL,
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NULL,
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NULL
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};
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uma_zone_t ipatm_vc_zone;
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/*
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* net.harp.ip
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*/
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SYSCTL_NODE(_net_harp, OID_AUTO, ip, CTLFLAG_RW, 0, "IPv4 over ATM");
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/*
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* net.harp.ip.ipatm_print
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*/
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int ipatm_print = 0;
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SYSCTL_INT(_net_harp_ip, OID_AUTO, ipatm_print, CTLFLAG_RW,
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&ipatm_print, 0, "dump IPv4-over-ATM packets");
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/*
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* Local functions
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*/
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static int ipatm_start(void);
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static int ipatm_stop(void);
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/*
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* Local variables
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*/
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static struct atm_ncm ipatm_ncm = {
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NULL,
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AF_INET,
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ipatm_ifoutput,
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ipatm_nifstat
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};
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static struct ipatm_listener {
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Atm_attributes attr;
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Atm_connection *conn;
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} ipatm_listeners[] = {
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{
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{ NULL, /* nif */
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CMAPI_CPCS, /* api */
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0, /* api_init */
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0, /* headin */
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0, /* headout */
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{ /* aal */
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T_ATM_PRESENT,
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ATM_AAL5
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},
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{ /* traffic */
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T_ATM_PRESENT,
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{
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{
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T_ATM_ABSENT,
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0,
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T_ATM_ABSENT,
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T_ATM_ABSENT,
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T_ATM_ABSENT,
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T_ATM_ABSENT,
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T_NO
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},
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{
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T_ATM_ABSENT,
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0,
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T_ATM_ABSENT,
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T_ATM_ABSENT,
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T_ATM_ABSENT,
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T_ATM_ABSENT,
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T_NO
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},
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T_YES
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},
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},
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{ /* bearer */
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T_ATM_ANY
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},
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{ /* bhli */
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T_ATM_ABSENT
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},
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{ /* blli */
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T_ATM_PRESENT,
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T_ATM_ABSENT,
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{
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{
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T_ATM_SIMPLE_ID,
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},
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{
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T_ATM_ABSENT
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}
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}
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},
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{ /* llc */
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T_ATM_PRESENT,
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{
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T_ATM_LLC_SHARING,
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IPATM_LLC_LEN,
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IPATM_LLC_HDR
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}
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},
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{ /* called */
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T_ATM_ANY
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},
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{ /* calling */
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T_ATM_ANY
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},
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{ /* qos */
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T_ATM_PRESENT,
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{
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T_ATM_NETWORK_CODING,
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{
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T_ATM_QOS_CLASS_0,
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},
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{
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T_ATM_QOS_CLASS_0
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}
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}
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},
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{ /* transit */
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T_ATM_ANY
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},
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{ /* cause */
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T_ATM_ABSENT
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},
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},
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NULL
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},
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{
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{ NULL, /* nif */
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CMAPI_CPCS, /* api */
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0, /* api_init */
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0, /* headin */
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0, /* headout */
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{ /* aal */
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T_ATM_PRESENT,
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ATM_AAL5
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},
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{ /* traffic */
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T_ATM_PRESENT,
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{
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{
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T_ATM_ABSENT,
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0,
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T_ATM_ABSENT,
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T_ATM_ABSENT,
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T_ATM_ABSENT,
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T_ATM_ABSENT,
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T_NO
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},
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{
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T_ATM_ABSENT,
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0,
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T_ATM_ABSENT,
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T_ATM_ABSENT,
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T_ATM_ABSENT,
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T_ATM_ABSENT,
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T_NO
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},
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T_YES
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},
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},
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{ /* bearer */
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T_ATM_ANY
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},
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{ /* bhli */
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T_ATM_ABSENT
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},
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{ /* blli */
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T_ATM_ABSENT,
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T_ATM_ABSENT
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},
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{ /* llc */
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T_ATM_ABSENT
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},
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{ /* called */
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T_ATM_ANY
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},
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{ /* calling */
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T_ATM_ANY
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},
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{ /* qos */
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T_ATM_PRESENT,
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{
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T_ATM_NETWORK_CODING,
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{
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T_ATM_QOS_CLASS_0,
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},
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{
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T_ATM_QOS_CLASS_0
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}
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}
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},
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{ /* transit */
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T_ATM_ANY
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},
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{ /* cause */
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T_ATM_ABSENT
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},
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},
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NULL
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},
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{
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{ NULL, /* nif */
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CMAPI_CPCS, /* api */
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0, /* api_init */
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0, /* headin */
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0, /* headout */
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{ /* aal */
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T_ATM_PRESENT,
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ATM_AAL3_4
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},
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{ /* traffic */
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T_ATM_PRESENT,
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{
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{
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T_ATM_ABSENT,
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0,
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T_ATM_ABSENT,
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T_ATM_ABSENT,
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T_ATM_ABSENT,
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T_ATM_ABSENT,
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T_NO
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},
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{
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T_ATM_ABSENT,
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0,
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T_ATM_ABSENT,
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T_ATM_ABSENT,
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T_ATM_ABSENT,
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T_ATM_ABSENT,
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T_NO
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},
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T_YES
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},
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},
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{ /* bearer */
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T_ATM_ANY
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},
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{ /* bhli */
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T_ATM_ABSENT
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},
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{ /* blli */
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T_ATM_ABSENT,
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T_ATM_ABSENT
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},
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{ /* llc */
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T_ATM_ABSENT
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},
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{ /* called */
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T_ATM_ANY
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},
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{ /* calling */
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T_ATM_ANY
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},
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{ /* qos */
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T_ATM_PRESENT,
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{
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T_ATM_NETWORK_CODING,
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{
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T_ATM_QOS_CLASS_0,
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},
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{
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T_ATM_QOS_CLASS_0
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}
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}
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},
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{ /* transit */
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T_ATM_ANY
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},
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{ /* cause */
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T_ATM_ABSENT
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},
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},
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NULL
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},
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};
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static struct t_atm_cause ipatm_cause = {
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T_ATM_ITU_CODING,
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T_ATM_LOC_USER,
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T_ATM_CAUSE_UNSPECIFIED_NORMAL,
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{0, 0, 0, 0}
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};
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/*
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* Initialize ipatm processing
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*
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* This will be called during module loading. We'll just register
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* ourselves and wait for the packets to start flying.
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*
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* Arguments:
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* none
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*
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* Returns:
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* 0 startup was successful
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* errno startup failed - reason indicated
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*
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*/
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static int
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ipatm_start()
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{
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struct atm_pif *pip;
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struct atm_nif *nip;
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int err, s, i;
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/*
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* Verify software version
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*/
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if (atm_version != ATM_VERSION) {
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log(LOG_ERR, "version mismatch: ipatm=%d.%d kernel=%d.%d\n",
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ATM_VERS_MAJ(ATM_VERSION), ATM_VERS_MIN(ATM_VERSION),
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ATM_VERS_MAJ(atm_version), ATM_VERS_MIN(atm_version));
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return (EINVAL);
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}
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ipatm_vc_zone = uma_zcreate("ipatm vc", sizeof(struct ipvcc), NULL,
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NULL, NULL, NULL, UMA_ALIGN_PTR, 0);
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if (ipatm_vc_zone == NULL)
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panic("ipatm_start: unable to create ipatm_vc_zone");
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/*
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* Register ourselves as a network convergence module
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*/
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err = atm_netconv_register(&ipatm_ncm);
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if (err)
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goto done;
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/*
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* Register ourselves as an ATM endpoint
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*/
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err = atm_endpoint_register(&ipatm_endpt);
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if (err)
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goto done;
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/*
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* Get current system configuration
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*/
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s = splnet();
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for (pip = atm_interface_head; pip; pip = pip->pif_next) {
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/*
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* Process each network interface
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*/
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for (nip = pip->pif_nif; nip; nip = nip->nif_pnext) {
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struct ifnet *ifp = ANIF2IFP(nip);
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struct in_ifaddr *ia;
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/*
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* Attach interface
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*/
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err = ipatm_nifstat(NCM_ATTACH, nip, 0);
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if (err) {
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(void) splx(s);
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goto done;
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}
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/*
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* If IP address has been set, register it
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*/
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TAILQ_FOREACH(ia, &in_ifaddrhead, ia_link) {
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if (ia->ia_ifp == ifp)
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break;
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}
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if (ia) {
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err = ipatm_nifstat(NCM_SETADDR, nip,
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(intptr_t)ia);
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if (err) {
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(void) splx(s);
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goto done;
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}
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}
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}
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}
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(void) splx(s);
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/*
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* Fill in union fields
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*/
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ipatm_aal5llc.aal.v.aal5.forward_max_SDU_size =
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ATM_NIF_MTU + IPATM_LLC_LEN;
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ipatm_aal5llc.aal.v.aal5.backward_max_SDU_size =
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ATM_NIF_MTU + IPATM_LLC_LEN;
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ipatm_aal5llc.aal.v.aal5.SSCS_type = T_ATM_NULL;
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ipatm_aal5llc.blli.v.layer_2_protocol.ID.simple_ID = T_ATM_BLLI2_I8802;
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ipatm_aal5null.aal.v.aal5.forward_max_SDU_size = ATM_NIF_MTU;
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ipatm_aal5null.aal.v.aal5.backward_max_SDU_size = ATM_NIF_MTU;
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ipatm_aal5null.aal.v.aal5.SSCS_type = T_ATM_NULL;
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ipatm_aal4null.aal.v.aal4.forward_max_SDU_size = ATM_NIF_MTU;
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ipatm_aal4null.aal.v.aal4.backward_max_SDU_size = ATM_NIF_MTU;
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ipatm_aal4null.aal.v.aal4.SSCS_type = T_ATM_NULL;
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ipatm_aal4null.aal.v.aal4.mid_low = 0;
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ipatm_aal4null.aal.v.aal4.mid_high = 1023;
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/*
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* Listen for incoming calls
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*/
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for (i = 0;
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i < (sizeof(ipatm_listeners) / sizeof(struct ipatm_listener));
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i++) {
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struct attr_aal *aalp = &ipatm_listeners[i].attr.aal;
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int maxsdu = ATM_NIF_MTU;
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/*
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* Fill in union fields
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*/
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if (ipatm_listeners[i].attr.blli.tag_l2 == T_ATM_PRESENT) {
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struct t_atm_blli *bp = &ipatm_listeners[i].attr.blli.v;
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bp->layer_2_protocol.ID.simple_ID = T_ATM_BLLI2_I8802;
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maxsdu += IPATM_LLC_LEN;
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}
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if (aalp->type == ATM_AAL5) {
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aalp->v.aal5.forward_max_SDU_size = maxsdu;
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aalp->v.aal5.backward_max_SDU_size = maxsdu;
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|
aalp->v.aal5.SSCS_type = T_ATM_NULL;
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} else {
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aalp->v.aal4.forward_max_SDU_size = maxsdu;
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aalp->v.aal4.backward_max_SDU_size = maxsdu;
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aalp->v.aal4.SSCS_type = T_ATM_NULL;
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aalp->v.aal4.mid_low = 0;
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aalp->v.aal4.mid_high = 1023;
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}
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/*
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* Now start listening
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*/
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if ((err = atm_cm_listen(NULL, &ipatm_endpt,
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(void *)(intptr_t)i, &ipatm_listeners[i].attr,
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&ipatm_listeners[i].conn, -1)) != 0)
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goto done;
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}
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/*
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* Start background VCC idle timer
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*/
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atm_timeout(&ipatm_itimer, IPATM_IDLE_TIME, ipatm_itimeout);
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done:
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return (err);
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}
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|
|
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/*
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* Halt ipatm processing
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*
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* This will be called just prior to unloading the module from
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* memory. All IP VCCs must be terminated before the protocol can
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* be shutdown.
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*
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* Arguments:
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* none
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|
*
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* Returns:
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* 0 shutdown was successful
|
|
* errno shutdown failed - reason indicated
|
|
*
|
|
*/
|
|
static int
|
|
ipatm_stop()
|
|
{
|
|
struct ip_nif *inp;
|
|
int err = 0, i;
|
|
int s = splnet();
|
|
|
|
/*
|
|
* Any VCCs still open??
|
|
*/
|
|
if (ipatm_vccnt) {
|
|
|
|
/* Yes, can't stop now */
|
|
err = EBUSY;
|
|
goto done;
|
|
}
|
|
|
|
/*
|
|
* Kill VCC idle timer
|
|
*/
|
|
(void) atm_untimeout(&ipatm_itimer);
|
|
|
|
/*
|
|
* Stop listening for incoming calls
|
|
*/
|
|
for (i = 0;
|
|
i < (sizeof(ipatm_listeners) / sizeof(struct ipatm_listener));
|
|
i++) {
|
|
if (ipatm_listeners[i].conn != NULL) {
|
|
(void) atm_cm_release(ipatm_listeners[i].conn,
|
|
&ipatm_cause);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Detach all our interfaces
|
|
*/
|
|
while ((inp = ipatm_nif_head) != NULL) {
|
|
(void) ipatm_nifstat(NCM_DETACH, inp->inf_nif, 0);
|
|
}
|
|
|
|
/*
|
|
* De-register from system
|
|
*/
|
|
(void) atm_netconv_deregister(&ipatm_ncm);
|
|
(void) atm_endpoint_deregister(&ipatm_endpt);
|
|
|
|
/*
|
|
* Free up our storage pools
|
|
*/
|
|
uma_zdestroy(ipatm_vc_zone);
|
|
done:
|
|
(void) splx(s);
|
|
return (err);
|
|
}
|
|
|
|
|
|
#ifdef ATM_IP_MODULE
|
|
/*
|
|
*******************************************************************
|
|
*
|
|
* Loadable Module Support
|
|
*
|
|
*******************************************************************
|
|
*/
|
|
static int ipatm_doload(void);
|
|
static int ipatm_dounload(void);
|
|
|
|
/*
|
|
* Generic module load processing
|
|
*
|
|
* This function is called by an OS-specific function when this
|
|
* module is being loaded.
|
|
*
|
|
* Arguments:
|
|
* none
|
|
*
|
|
* Returns:
|
|
* 0 load was successful
|
|
* errno load failed - reason indicated
|
|
*
|
|
*/
|
|
static int
|
|
ipatm_doload()
|
|
{
|
|
int err = 0;
|
|
|
|
/*
|
|
* Start us up
|
|
*/
|
|
err = ipatm_start();
|
|
if (err)
|
|
/* Problems, clean up */
|
|
(void)ipatm_stop();
|
|
|
|
return (err);
|
|
}
|
|
|
|
|
|
/*
|
|
* Generic module unload processing
|
|
*
|
|
* This function is called by an OS-specific function when this
|
|
* module is being unloaded.
|
|
*
|
|
* Arguments:
|
|
* none
|
|
*
|
|
* Returns:
|
|
* 0 unload was successful
|
|
* errno unload failed - reason indicated
|
|
*
|
|
*/
|
|
static int
|
|
ipatm_dounload()
|
|
{
|
|
int err = 0;
|
|
|
|
/*
|
|
* OK, try to clean up our mess
|
|
*/
|
|
err = ipatm_stop();
|
|
|
|
return (err);
|
|
}
|
|
|
|
|
|
|
|
|
|
#include <sys/exec.h>
|
|
#include <sys/sysent.h>
|
|
#include <sys/lkm.h>
|
|
|
|
/*
|
|
* Loadable miscellaneous module description
|
|
*/
|
|
MOD_MISC(ipatm);
|
|
|
|
|
|
/*
|
|
* Loadable module support "load" entry point
|
|
*
|
|
* This is the routine called by the lkm driver whenever the
|
|
* modload(1) command is issued for this module.
|
|
*
|
|
* Arguments:
|
|
* lkmtp pointer to lkm drivers's structure
|
|
* cmd lkm command code
|
|
*
|
|
* Returns:
|
|
* 0 command was successful
|
|
* errno command failed - reason indicated
|
|
*
|
|
*/
|
|
static int
|
|
ipatm_load(lkmtp, cmd)
|
|
struct lkm_table *lkmtp;
|
|
int cmd;
|
|
{
|
|
return(ipatm_doload());
|
|
}
|
|
|
|
|
|
/*
|
|
* Loadable module support "unload" entry point
|
|
*
|
|
* This is the routine called by the lkm driver whenever the
|
|
* modunload(1) command is issued for this module.
|
|
*
|
|
* Arguments:
|
|
* lkmtp pointer to lkm drivers's structure
|
|
* cmd lkm command code
|
|
*
|
|
* Returns:
|
|
* 0 command was successful
|
|
* errno command failed - reason indicated
|
|
*
|
|
*/
|
|
static int
|
|
ipatm_unload(lkmtp, cmd)
|
|
struct lkm_table *lkmtp;
|
|
int cmd;
|
|
{
|
|
return(ipatm_dounload());
|
|
}
|
|
|
|
|
|
/*
|
|
* Loadable module support entry point
|
|
*
|
|
* This is the routine called by the lkm driver for all loadable module
|
|
* functions for this driver. This routine name must be specified
|
|
* on the modload(1) command. This routine will be called whenever the
|
|
* modload(1), modunload(1) or modstat(1) commands are issued for this
|
|
* module.
|
|
*
|
|
* Arguments:
|
|
* lkmtp pointer to lkm drivers's structure
|
|
* cmd lkm command code
|
|
* ver lkm version
|
|
*
|
|
* Returns:
|
|
* 0 command was successful
|
|
* errno command failed - reason indicated
|
|
*
|
|
*/
|
|
int
|
|
ipatm_mod(lkmtp, cmd, ver)
|
|
struct lkm_table *lkmtp;
|
|
int cmd;
|
|
int ver;
|
|
{
|
|
MOD_DISPATCH(ipatm, lkmtp, cmd, ver,
|
|
ipatm_load, ipatm_unload, lkm_nullcmd);
|
|
}
|
|
|
|
#else /* !ATM_IP_MODULE */
|
|
|
|
/*
|
|
*******************************************************************
|
|
*
|
|
* Kernel Compiled Module Support
|
|
*
|
|
*******************************************************************
|
|
*/
|
|
static void ipatm_doload(void *);
|
|
|
|
SYSINIT(atmipatm, SI_SUB_PROTO_END, SI_ORDER_ANY, ipatm_doload, NULL)
|
|
|
|
/*
|
|
* Kernel initialization
|
|
*
|
|
* Arguments:
|
|
* arg Not used
|
|
*
|
|
* Returns:
|
|
* none
|
|
*
|
|
*/
|
|
static void
|
|
ipatm_doload(void *arg)
|
|
{
|
|
int err = 0;
|
|
|
|
/*
|
|
* Start us up
|
|
*/
|
|
err = ipatm_start();
|
|
if (err) {
|
|
/* Problems, clean up */
|
|
(void)ipatm_stop();
|
|
|
|
log(LOG_ERR, "IP over ATM unable to initialize (%d)!!\n", err);
|
|
}
|
|
return;
|
|
}
|
|
#endif /* ATM_IP_MODULE */
|
|
|