diff options
Diffstat (limited to 'sys/netatm/uni/uniip.c')
| -rw-r--r-- | sys/netatm/uni/uniip.c | 252 |
1 files changed, 252 insertions, 0 deletions
diff --git a/sys/netatm/uni/uniip.c b/sys/netatm/uni/uniip.c new file mode 100644 index 0000000..0039585 --- /dev/null +++ b/sys/netatm/uni/uniip.c @@ -0,0 +1,252 @@ +/* + * + * =================================== + * HARP | Host ATM Research Platform + * =================================== + * + * + * This Host ATM Research Platform ("HARP") file (the "Software") is + * made available by Network Computing Services, Inc. ("NetworkCS") + * "AS IS". NetworkCS does not provide maintenance, improvements or + * support of any kind. + * + * NETWORKCS MAKES NO WARRANTIES OR REPRESENTATIONS, EXPRESS OR IMPLIED, + * INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY + * AND FITNESS FOR A PARTICULAR PURPOSE, AS TO ANY ELEMENT OF THE + * SOFTWARE OR ANY SUPPORT PROVIDED IN CONNECTION WITH THIS SOFTWARE. + * In no event shall NetworkCS be responsible for any damages, including + * but not limited to consequential damages, arising from or relating to + * any use of the Software or related support. + * + * Copyright 1994-1998 Network Computing Services, Inc. + * + * Copies of this Software may be made, however, the above copyright + * notice must be reproduced on all copies. + * + * @(#) $Id: uniip.c,v 1.6 1998/05/18 19:18:42 mks Exp $ + * + */ + +/* + * ATM Forum UNI Support + * --------------------- + * + * UNI IP interface module + * + */ + +#ifndef lint +static char *RCSid = "@(#) $Id: uniip.c,v 1.6 1998/05/18 19:18:42 mks Exp $"; +#endif + +#include <netatm/kern_include.h> + +#include <netatm/ipatm/ipatm_var.h> +#include <netatm/ipatm/ipatm_serv.h> +#include <netatm/uni/uniip_var.h> + + +/* + * Local functions + */ +static int uniip_ipact __P((struct ip_nif *)); +static int uniip_ipdact __P((struct ip_nif *)); + + +/* + * Global variables + */ +struct uniip *uniip_head = NULL; + +struct ip_serv uniip_ipserv = { + uniip_ipact, + uniip_ipdact, + uniarp_ioctl, + uniarp_pvcopen, + uniarp_svcout, + uniarp_svcin, + uniarp_svcactive, + uniarp_vcclose, + NULL, + {ATM_AAL5, ATM_ENC_LLC}, +}; + + +/* + * Local variables + */ +static struct sp_info uniip_pool = { + "uni ip pool", /* si_name */ + sizeof(struct uniip), /* si_blksiz */ + 2, /* si_blkcnt */ + 100 /* si_maxallow */ +}; + + +/* + * Process module loading notification + * + * Called whenever the uni module is initializing. + * + * Arguments: + * none + * + * Returns: + * 0 initialization successful + * errno initialization failed - reason indicated + * + */ +int +uniip_start() +{ + int err; + + /* + * Tell arp to initialize stuff + */ + err = uniarp_start(); + + return (err); +} + + +/* + * Process module unloading notification + * + * Called whenever the uni module is about to be unloaded. All signalling + * instances will have been previously detached. All uniip resources + * must be freed now. + * + * Arguments: + * none + * + * Returns: + * 0 shutdown was successful + * errno shutdown failed - reason indicated + * + */ +int +uniip_stop() +{ + + /* + * All IP interfaces should be gone + */ + if (uniip_head) + return (EBUSY); + + /* + * Tell arp to stop + */ + uniarp_stop(); + + /* + * Free our storage pools + */ + atm_release_pool(&uniip_pool); + + return (0); +} + + +/* + * Process IP Network Interface Activation + * + * Called whenever an IP network interface becomes active. + * + * Called at splnet. + * + * Arguments: + * inp pointer to IP network interface + * + * Returns: + * 0 command successful + * errno command failed - reason indicated + * + */ +static int +uniip_ipact(inp) + struct ip_nif *inp; +{ + struct uniip *uip; + + /* + * Make sure we don't already have this interface + */ + for (uip = uniip_head; uip; uip = uip->uip_next) { + if (uip->uip_ipnif == inp) + return (EEXIST); + } + + /* + * Get a new interface control block + */ + uip = (struct uniip *)atm_allocate(&uniip_pool); + if (uip == NULL) + return (ENOMEM); + + /* + * Initialize and link up + */ + uip->uip_ipnif = inp; + LINK2TAIL(uip, struct uniip, uniip_head, uip_next); + + /* + * Link from IP world + */ + inp->inf_isintf = (caddr_t)uip; + + /* + * Tell arp about new interface + */ + uniarp_ipact(uip); + + return (0); +} + + +/* + * Process IP Network Interface Deactivation + * + * Called whenever an IP network interface becomes inactive. + * + * Called at splnet. + * + * Arguments: + * inp pointer to IP network interface + * + * Returns: + * 0 command successful + * errno command failed - reason indicated + * + */ +static int +uniip_ipdact(inp) + struct ip_nif *inp; +{ + struct uniip *uip; + + /* + * Get the appropriate IP interface block + */ + uip = (struct uniip *)inp->inf_isintf; + if (uip == NULL) + return (ENXIO); + + /* + * Let arp know about this + */ + uniarp_ipdact(uip); + + /* + * Free interface info + */ + UNLINK(uip, struct uniip, uniip_head, uip_next); + if (uip->uip_prefix != NULL) + KM_FREE(uip->uip_prefix, + uip->uip_nprefix * sizeof(struct uniarp_prf), M_DEVBUF); + atm_free((caddr_t)uip); + + return (0); +} + |
