diff options
Diffstat (limited to 'sys/netatm/atm_if.c')
| -rw-r--r-- | sys/netatm/atm_if.c | 1147 |
1 files changed, 0 insertions, 1147 deletions
diff --git a/sys/netatm/atm_if.c b/sys/netatm/atm_if.c deleted file mode 100644 index 665e7c0..0000000 --- a/sys/netatm/atm_if.c +++ /dev/null @@ -1,1147 +0,0 @@ -/*- - * =================================== - * 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. - */ - -/* - * Core ATM Services - * ----------------- - * - * ATM interface management - */ - -#include <sys/cdefs.h> -__FBSDID("$FreeBSD$"); - -#include <sys/param.h> -#include <sys/systm.h> -#include <sys/malloc.h> -#include <sys/sockio.h> -#include <sys/socket.h> -#include <sys/socketvar.h> -#include <sys/syslog.h> -#include <net/if.h> -#include <net/if_types.h> -#include <net/if_dl.h> -#include <net/route.h> -#include <net/bpf.h> -#include <netinet/in.h> -#include <netinet/in_var.h> -#include <netatm/port.h> -#include <netatm/queue.h> -#include <netatm/atm.h> -#include <netatm/atm_sys.h> -#include <netatm/atm_sap.h> -#include <netatm/atm_cm.h> -#include <netatm/atm_if.h> -#include <netatm/atm_ioctl.h> -#include <netatm/atm_sigmgr.h> -#include <netatm/atm_stack.h> -#include <netatm/atm_pcb.h> -#include <netatm/atm_var.h> - -/* - * Local functions - */ -static int atm_physif_ioctl(int, caddr_t, caddr_t); -static int atm_if_ioctl(struct ifnet *, u_long, caddr_t); -static int atm_ifparse(const char *, char *, size_t, int *); - -/* - * Local variables - */ -static int (*atm_ifouttbl[AF_MAX+1]) - (struct ifnet *, KBuffer *, struct sockaddr *) - = {NULL}; - - -/* - * Register an ATM physical interface - * - * Each ATM device interface must register itself here upon completing - * its internal initialization. This applies to both linked and loaded - * device drivers. The interface must be registered before a signalling - * manager can be attached. - * - * Arguments: - * cup pointer to interface's common unit structure - * name pointer to device name string - * sdp pointer to interface's stack services - * - * Returns: - * 0 registration successful - * errno registration failed - reason indicated - * - */ -int -atm_physif_register(cup, name, sdp) - Cmn_unit *cup; - const char *name; - struct stack_defn *sdp; -{ - struct atm_pif *pip; - int s; - - /* - * See if we need to be initialized - */ - if (!atm_init) - atm_initialize(); - - /* - * Make sure we're not already registered - */ - if (cup->cu_flags & CUF_REGISTER) { - return (EALREADY); - } - - s = splnet(); - - /* - * Make sure an interface is only registered once - */ - for (pip = atm_interface_head; pip != NULL; pip = pip->pif_next) { - if ((cup->cu_unit == pip->pif_unit) && - (strcmp(name, pip->pif_name) == 0)) { - (void) splx(s); - return (EEXIST); - } - } - - /* - * Fill in physical interface parameters - */ - pip = &cup->cu_pif; - pip->pif_name = name; - pip->pif_unit = cup->cu_unit; - pip->pif_flags = PIF_UP; - pip->pif_services = sdp; - pip->pif_ioctl = atm_physif_ioctl; - - /* - * Link in the interface and mark us registered - */ - LINK2TAIL(pip, struct atm_pif, atm_interface_head, pif_next); - cup->cu_flags |= CUF_REGISTER; - - (void) splx(s); - return (0); -} - - -/* - * De-register an ATM physical interface - * - * Each ATM interface must de-register itself before downing the interface. - * The interface's signalling manager will be detached and any network - * interface and VCC control blocks will be freed. - * - * Arguments: - * cup pointer to interface's common unit structure - * - * Returns: - * 0 de-registration successful - * errno de-registration failed - reason indicated - * - */ -int -atm_physif_deregister(cup) - Cmn_unit *cup; -{ - struct atm_pif *pip = (struct atm_pif *)&cup->cu_pif; - Cmn_vcc *cvp, *cvp_next; - int err; - int s = splnet(); - - /* - * Detach and deregister, if needed - */ - if ((cup->cu_flags & CUF_REGISTER)) { - - /* - * Detach from signalling manager - */ - if (pip->pif_sigmgr != NULL) { - err = atm_sigmgr_detach(pip); - if (err && (err != ENOENT)) { - (void) splx(s); - return (err); - } - } - - /* - * Make sure signalling manager is detached - */ - if (pip->pif_sigmgr != NULL) { - (void) splx(s); - return (EBUSY); - } - - /* - * Unlink interface - */ - UNLINK(pip, struct atm_pif, atm_interface_head, pif_next); - - cup->cu_flags &= ~CUF_REGISTER; - } - - /* - * Free all of our network interfaces - */ - atm_physif_freenifs(pip, cup->cu_nif_zone); - - /* - * Free unit's vcc information - */ - cvp = cup->cu_vcc; - while (cvp) { - cvp_next = cvp->cv_next; - uma_zfree(cup->cu_vcc_zone, cvp); - cvp = cvp_next; - } - cup->cu_vcc = (Cmn_vcc *)NULL; - - (void) splx(s); - - return (0); -} - - -/* - * Free all network interfaces on a physical interface - * - * Arguments - * pip pointer to physical interface structure - * - * Returns - * none - * - */ -void -atm_physif_freenifs(pip, zone) - struct atm_pif *pip; - uma_zone_t zone; -{ - struct atm_nif *nip = pip->pif_nif; - int s = splnet(); - - while ( nip ) - { - /* - * atm_nif_detach zeros pointers - save so we can - * walk the chain. - */ - struct atm_nif *nipp = nip->nif_pnext; - - /* - * Clean up network i/f trails - */ - atm_nif_detach(nip); - uma_zfree(zone, nip); - nip = nipp; - } - pip->pif_nif = (struct atm_nif *)NULL; - - (void) splx(s); - - return; -} - -/* - * Handle physical interface ioctl's - * - * See <netatm/atm_ioctl.h> for definitions. - * - * Called at splnet. - * - * Arguments: - * code Ioctl function (sub)code - * data Data block. On input contains command, - * on output, contains results - * arg Optional code specific arguments - * - * Returns: - * 0 Request processed successfully - * errno Request failed - reason code - * - */ -static int -atm_physif_ioctl(code, data, arg) - int code; - caddr_t data; - caddr_t arg; -{ - struct atminfreq *aip = (struct atminfreq *)data; - struct atmsetreq *asr = (struct atmsetreq *)data; - struct atm_pif *pip; - struct atm_nif *nip; - struct sigmgr *smp; - struct siginst *sip; - struct ifnet *ifp; - Cmn_unit *cup; - Atm_config *acp; - caddr_t buf = aip->air_buf_addr; - struct air_phy_stat_rsp *apsp; - struct air_int_rsp apr; - struct air_netif_rsp anr; - struct air_cfg_rsp acr; - u_int count; - size_t len; - size_t buf_len = aip->air_buf_len; - int err = 0; - char ifname[2*IFNAMSIZ]; - struct ifaddr *ifa; - struct in_ifaddr *ia; - struct sockaddr_dl *sdl; - - - switch ( aip->air_opcode ) { - - case AIOCS_INF_INT: - /* - * Get physical interface information - */ - aip = (struct atminfreq *)data; - pip = (struct atm_pif *)arg; - - /* - * Make sure there's room in user buffer - */ - if (aip->air_buf_len < sizeof(apr)) { - err = ENOSPC; - break; - } - - /* - * Fill in info to be returned - */ - bzero((caddr_t)&apr, sizeof(apr)); - smp = pip->pif_sigmgr; - sip = pip->pif_siginst; - (void) snprintf(apr.anp_intf, sizeof(apr.anp_intf), - "%s%d", pip->pif_name, pip->pif_unit ); - if ( pip->pif_nif ) - { - strcpy(apr.anp_nif_pref, pip->pif_nif->nif_ifp->if_dname); - - nip = pip->pif_nif; - while ( nip ) { - apr.anp_nif_cnt++; - nip = nip->nif_pnext; - } - } - if (sip) { - ATM_ADDR_COPY(&sip->si_addr, &apr.anp_addr); - ATM_ADDR_COPY(&sip->si_subaddr, &apr.anp_subaddr); - apr.anp_sig_proto = smp->sm_proto; - apr.anp_sig_state = sip->si_state; - } - - /* - * Copy data to user buffer - */ - err = copyout((caddr_t)&apr, aip->air_buf_addr, sizeof(apr)); - if (err) - break; - - /* - * Update buffer pointer/count - */ - aip->air_buf_addr += sizeof(apr); - aip->air_buf_len -= sizeof(apr); - break; - - case AIOCS_INF_NIF: - /* - * Get network interface information - */ - aip = (struct atminfreq *)data; - nip = (struct atm_nif *)arg; - ifp = nip->nif_ifp; - pip = nip->nif_pif; - - /* - * Make sure there's room in user buffer - */ - if (aip->air_buf_len < sizeof(anr)) { - err = ENOSPC; - break; - } - - /* - * Fill in info to be returned - */ - bzero((caddr_t)&anr, sizeof(anr)); - (void) snprintf(anr.anp_intf, sizeof(anr.anp_intf), - "%s%d", ifp->if_dname, ifp->if_dunit); - IFP_TO_IA(ifp, ia); - if (ia) { - anr.anp_proto_addr = *ia->ia_ifa.ifa_addr; - } - (void) snprintf(anr.anp_phy_intf, sizeof(anr.anp_phy_intf), - "%s%d", pip->pif_name, pip->pif_unit); - - /* - * Copy data to user buffer - */ - err = copyout((caddr_t)&anr, aip->air_buf_addr, sizeof(anr)); - if (err) - break; - - /* - * Update buffer pointer/count - */ - aip->air_buf_addr += sizeof(anr); - aip->air_buf_len -= sizeof(anr); - break; - - case AIOCS_INF_PIS: - /* - * Get per interface statistics - */ - pip = (struct atm_pif *)arg; - if ( pip == NULL ) - return ( ENXIO ); - snprintf ( ifname, sizeof(ifname), - "%s%d", pip->pif_name, pip->pif_unit ); - - /* - * Cast response into users buffer - */ - apsp = (struct air_phy_stat_rsp *)buf; - - /* - * Sanity check - */ - len = sizeof ( struct air_phy_stat_rsp ); - if ( buf_len < len ) - return ( ENOSPC ); - - /* - * Copy interface name into response - */ - if ((err = copyout ( ifname, apsp->app_intf, IFNAMSIZ)) != 0) - break; - - /* - * Copy counters - */ - if ((err = copyout(&pip->pif_ipdus, &apsp->app_ipdus, - len - sizeof(apsp->app_intf))) != 0) - break; - - /* - * Adjust buffer elements - */ - buf += len; - buf_len -= len; - - aip->air_buf_addr = buf; - aip->air_buf_len = buf_len; - break; - - case AIOCS_SET_NIF: - /* - * Set NIF - allow user to configure 1 or more logical - * interfaces per physical interface. - */ - - /* - * Get pointer to physical interface structure from - * ioctl argument. - */ - pip = (struct atm_pif *)arg; - cup = (Cmn_unit *)pip; - - /* - * Sanity check - are we already connected to something? - */ - if ( pip->pif_sigmgr ) - { - err = EBUSY; - break; - } - - /* - * Free any previously allocated NIFs - */ - atm_physif_freenifs(pip, cup->cu_nif_zone); - - /* - * Add list of interfaces - */ - for ( count = 0; count < asr->asr_nif_cnt; count++ ) - { - nip = uma_zalloc(cup->cu_nif_zone, M_WAITOK | M_ZERO); - if ( nip == NULL ) - { - /* - * Destroy any successful nifs - */ - atm_physif_freenifs(pip, cup->cu_nif_zone); - err = ENOMEM; - break; - } - - nip->nif_pif = pip; - ifp = nip->nif_ifp = if_alloc(IFT_IPOVERATM); - if (ifp == NULL) { - uma_zfree(cup->cu_nif_zone, nip); - /* - * Destroy any successful nifs - */ - atm_physif_freenifs(pip, cup->cu_nif_zone); - break; - } - - strcpy ( nip->nif_name, asr->asr_nif_pref ); - nip->nif_sel = count; - - if_initname(ifp, nip->nif_name, count); - ifp->if_mtu = ATM_NIF_MTU; - ifp->if_flags = IFF_UP | IFF_BROADCAST; - ifp->if_drv_flags = IFF_DRV_RUNNING; - ifp->if_output = atm_ifoutput; - ifp->if_ioctl = atm_if_ioctl; - ifp->if_snd.ifq_maxlen = ifqmaxlen; - switch ( cup->cu_config.ac_media ) { - case MEDIA_TAXI_100: - ifp->if_baudrate = 100000000; - break; - case MEDIA_TAXI_140: - ifp->if_baudrate = 140000000; - break; - case MEDIA_OC3C: - case MEDIA_OC12C: - case MEDIA_UTP155: - ifp->if_baudrate = 155000000; - break; - case MEDIA_UTP25: - ifp->if_baudrate = 25600000; - break; - case MEDIA_VIRTUAL: - ifp->if_baudrate = 100000000; /* XXX */ - break; - case MEDIA_DSL: - ifp->if_baudrate = 2500000; /* XXX */ - break; - case MEDIA_UNKNOWN: - ifp->if_baudrate = 9600; - break; - } - if ((err = atm_nif_attach(nip)) != 0) { - if_free(nip->nif_ifp); - uma_zfree(cup->cu_nif_zone, nip); - /* - * Destroy any successful nifs - */ - atm_physif_freenifs(pip, cup->cu_nif_zone); - break; - } - /* - * Set macaddr in <Link> address - */ - ifp->if_addrlen = 6; - ifa = ifp->if_addr; - if ( ifa ) { - sdl = (struct sockaddr_dl *) - ifa->ifa_addr; - sdl->sdl_type = IFT_ETHER; - sdl->sdl_alen = ifp->if_addrlen; - bcopy ( (caddr_t)&cup->cu_config.ac_macaddr, - LLADDR(sdl), ifp->if_addrlen ); - } - } - break; - - case AIOCS_INF_CFG: - /* - * Get adapter configuration information - */ - aip = (struct atminfreq *)data; - pip = (struct atm_pif *)arg; - cup = (Cmn_unit *)pip; - acp = &cup->cu_config; - - /* - * Make sure there's room in user buffer - */ - if (aip->air_buf_len < sizeof(acr)) { - err = ENOSPC; - break; - } - - /* - * Fill in info to be returned - */ - bzero((caddr_t)&acr, sizeof(acr)); - (void) snprintf(acr.acp_intf, sizeof(acr.acp_intf), - "%s%d", pip->pif_name, pip->pif_unit); - bcopy((caddr_t)acp, (caddr_t)&acr.acp_cfg, - sizeof(Atm_config)); - - /* - * Copy data to user buffer - */ - err = copyout((caddr_t)&acr, aip->air_buf_addr, - sizeof(acr)); - if (err) - break; - - /* - * Update buffer pointer/count - */ - aip->air_buf_addr += sizeof(acr); - aip->air_buf_len -= sizeof(acr); - break; - - case AIOCS_INF_VST: - /* - * Pass off to device-specific handler - */ - cup = (Cmn_unit *)arg; - if (cup == NULL) - err = ENXIO; - else - err = (*cup->cu_ioctl)(code, data, arg); - break; - - default: - err = ENOSYS; - } - - return ( err ); -} - - -/* - * Register a Network Convergence Module - * - * Each ATM network convergence module must register itself here before - * it will receive network interface status notifications. - * - * Arguments: - * ncp pointer to network convergence definition structure - * - * Returns: - * 0 registration successful - * errno registration failed - reason indicated - * - */ -int -atm_netconv_register(ncp) - struct atm_ncm *ncp; -{ - struct atm_ncm *tdp; - int s = splnet(); - - /* - * See if we need to be initialized - */ - if (!atm_init) - atm_initialize(); - - /* - * Validate protocol family - */ - if (ncp->ncm_family > AF_MAX) { - (void) splx(s); - return (EINVAL); - } - - /* - * Ensure no duplicates - */ - for (tdp = atm_netconv_head; tdp != NULL; tdp = tdp->ncm_next) { - if (tdp->ncm_family == ncp->ncm_family) { - (void) splx(s); - return (EEXIST); - } - } - - /* - * Add module to list - */ - LINK2TAIL(ncp, struct atm_ncm, atm_netconv_head, ncm_next); - - /* - * Add new interface output function - */ - atm_ifouttbl[ncp->ncm_family] = ncp->ncm_ifoutput; - - (void) splx(s); - return (0); -} - - -/* - * De-register an ATM Network Convergence Module - * - * Each ATM network convergence provider must de-register its registered - * service(s) before terminating. Specifically, loaded kernel modules - * must de-register their services before unloading themselves. - * - * Arguments: - * ncp pointer to network convergence definition structure - * - * Returns: - * 0 de-registration successful - * errno de-registration failed - reason indicated - * - */ -int -atm_netconv_deregister(ncp) - struct atm_ncm *ncp; -{ - int found, s = splnet(); - - /* - * Remove module from list - */ - UNLINKF(ncp, struct atm_ncm, atm_netconv_head, ncm_next, found); - - if (!found) { - (void) splx(s); - return (ENOENT); - } - - /* - * Remove module's interface output function - */ - atm_ifouttbl[ncp->ncm_family] = NULL; - - (void) splx(s); - return (0); -} - - -/* - * Attach an ATM Network Interface - * - * Before an ATM network interface can be used by the system, the owning - * device interface must attach the network interface using this function. - * The physical interface for this network interface must have been previously - * registered (using atm_interface_register). The network interface will be - * added to the kernel's interface list and to the physical interface's list. - * The caller is responsible for initializing the control block fields. - * - * Arguments: - * nip pointer to atm network interface control block - * - * Returns: - * 0 attach successful - * errno attach failed - reason indicated - * - */ -int -atm_nif_attach(nip) - struct atm_nif *nip; -{ - struct atm_pif *pip, *pip2; - struct ifnet *ifp; - struct atm_ncm *ncp; - int s; - - ifp = nip->nif_ifp; - if (ifp == NULL) - return (ENOSPC); - pip = nip->nif_pif; - - s = splimp(); - - /* - * Verify physical interface is registered - */ - for (pip2 = atm_interface_head; pip2 != NULL; pip2 = pip2->pif_next) { - if (pip == pip2) - break; - } - if ((pip == NULL) || (pip2 == NULL)) { - (void) splx(s); - return (EFAULT); - } - - /* - * Add to system interface list - */ - if_attach(ifp); - - /* - * Add to BPF interface list - * DLT_ATM_RFC_1483 cannot be used because both NULL and LLC/SNAP could - * be provisioned - */ - bpfattach(ifp, DLT_ATM_CLIP, T_ATM_LLC_MAX_LEN); - - /* - * Add to physical interface list - */ - LINK2TAIL(nip, struct atm_nif, pip->pif_nif, nif_pnext); - - /* - * Notify network convergence modules of new network i/f - */ - for (ncp = atm_netconv_head; ncp; ncp = ncp->ncm_next) { - int err; - - err = (*ncp->ncm_stat)(NCM_ATTACH, nip, 0); - if (err) { - atm_nif_detach(nip); - (void) splx(s); - return (err); - } - } - - (void) splx(s); - return (0); -} - - -/* - * Detach an ATM Network Interface - * - * Before an ATM network interface control block can be freed, all kernel - * references to/from this block must be released. This function will delete - * all routing references to the interface and free all interface addresses - * for the interface. The network interface will then be removed from the - * kernel's interface list and from the owning physical interface's list. - * The caller is responsible for free'ing the control block. - * - * Arguments: - * nip pointer to atm network interface control block - * - * Returns: - * none - * - */ -void -atm_nif_detach(nip) - struct atm_nif *nip; -{ - struct atm_ncm *ncp; - int s; - struct ifnet *ifp = nip->nif_ifp; - - s = splimp(); - - /* - * Notify convergence modules of network i/f demise - */ - for (ncp = atm_netconv_head; ncp; ncp = ncp->ncm_next) { - (void) (*ncp->ncm_stat)(NCM_DETACH, nip, 0); - } - - /* - * Remove from BPF interface list - */ - bpfdetach(ifp); - - /* - * Free all interface routes and addresses, - * delete all remaining routes using this interface, - * then remove from the system interface list - */ - if_detach(ifp); - if_free(ifp); - - /* - * Remove from physical interface list - */ - UNLINK(nip, struct atm_nif, nip->nif_pif->pif_nif, nif_pnext); - - (void) splx(s); -} - -/* - * Set an ATM Network Interface address - * - * This is called from a device interface when processing an SIOCSIFADDR - * ioctl request. We just notify all convergence modules of the new address - * and hope everyone has non-overlapping interests, since if someone reports - * an error we don't go back and tell everyone to undo the change. - * - * Arguments: - * nip pointer to atm network interface control block - * ifa pointer to new interface address - * - * Returns: - * 0 set successful - * errno set failed - reason indicated - * - */ -int -atm_nif_setaddr(nip, ifa) - struct atm_nif *nip; - struct ifaddr *ifa; -{ - struct atm_ncm *ncp; - int err = 0, s = splnet(); - - /* - * Notify convergence modules of network i/f change - */ - for (ncp = atm_netconv_head; ncp; ncp = ncp->ncm_next) { - err = (*ncp->ncm_stat)(NCM_SETADDR, nip, (intptr_t)ifa); - if (err) - break; - } - (void) splx(s); - - return (err); -} - - -/* - * ATM Interface Packet Output - * - * All ATM network interfaces must have their ifnet if_output address set to - * this function. Since no existing network layer code is to be modified - * for ATM support, this function serves as the hook to allow network output - * packets to be assigned to their proper outbound VCC. Each network address - * family which is to be supported over ATM must be assigned an output - * packet processing function via atm_netconv_register(). - * - * Arguments: - * ifp pointer to ifnet structure - * m pointer to packet buffer chain to be output - * dst pointer to packet's network destination address - * - * Returns: - * 0 packet queued to interface - * errno output failed - reason indicated - * - */ -int -atm_ifoutput(ifp, m, dst, rt) - struct ifnet *ifp; - KBuffer *m; - struct sockaddr *dst; - struct rtentry *rt; -{ - u_short fam = dst->sa_family; - int (*func)(struct ifnet *, KBuffer *, - struct sockaddr *); - - /* - * Validate address family - */ - if (fam > AF_MAX) { - KB_FREEALL(m); - return (EAFNOSUPPORT); - } - - /* - * Hand packet off for dst-to-VCC mapping - */ - func = atm_ifouttbl[fam]; - if (func == NULL) { - KB_FREEALL(m); - return (EAFNOSUPPORT); - } - return ((*func)(ifp, m, dst)); -} - - -/* - * Handle interface ioctl requests. - * - * Arguments: - * ifp pointer to network interface structure - * cmd IOCTL cmd - * data arguments to/from ioctl - * - * Returns: - * error errno value - */ -static int -atm_if_ioctl(ifp, cmd, data) - struct ifnet *ifp; - u_long cmd; - caddr_t data; -{ - register struct ifreq *ifr = (struct ifreq *)data; - struct atm_nif *nip = IFP2ANIF(ifp); - int error = 0; - int s = splnet(); - - switch ( cmd ) - { - case SIOCGIFADDR: - bcopy ( (caddr_t)&(nip->nif_pif->pif_macaddr), - (caddr_t)ifr->ifr_addr.sa_data, - sizeof(struct mac_addr) ); - break; - - case SIOCSIFADDR: - error = atm_nif_setaddr ( nip, (struct ifaddr *)data); - ifp->if_flags |= IFF_UP | IFF_BROADCAST; - ifp->if_drv_flags |= IFF_DRV_RUNNING; - break; - - case SIOCGIFFLAGS: - *(int *)data = ifp->if_flags; - break; - - case SIOCSIFFLAGS: - break; - - default: - error = EINVAL; - break; - } - - (void) splx(s); - return ( error ); -} - - -/* - * Parse interface name - * - * Parses an interface name string into a name and a unit component. - * - * Arguments: - * name pointer to interface name string - * namep address to store interface name - * size size available at namep - * unitp address to store interface unit number - * - * Returns: - * 0 name parsed - * else parse error - * - */ -static int -atm_ifparse(const char *name, char *namep, size_t size, int *unitp) -{ - const char *cp; - char *np; - size_t len = 0; - int unit = 0; - - /* - * Separate supplied string into name and unit parts. - */ - cp = name; - np = namep; - while (*cp) { - if (*cp >= '0' && *cp <= '9') - break; - if (++len >= size) - return (-1); - *np++ = *cp++; - } - *np = '\0'; - while (*cp && *cp >= '0' && *cp <= '9') - unit = 10 * unit + *cp++ - '0'; - - *unitp = unit; - - return (0); -} - - -/* - * Locate ATM physical interface via name - * - * Uses the supplied interface name string to locate a registered - * ATM physical interface. - * - * Arguments: - * name pointer to interface name string - * - * Returns: - * 0 interface not found - * else pointer to atm physical interface structure - * - */ -struct atm_pif * -atm_pifname(name) - char *name; -{ - struct atm_pif *pip; - char n[IFNAMSIZ]; - int unit; - - /* - * Break down name - */ - if (atm_ifparse(name, n, sizeof(n), &unit)) - return ((struct atm_pif *)0); - - /* - * Look for the physical interface - */ - for (pip = atm_interface_head; pip; pip = pip->pif_next) { - if ((pip->pif_unit == unit) && (strcmp(pip->pif_name, n) == 0)) - break; - } - - return (pip); -} - - -/* - * Locate ATM network interface via name - * - * Uses the supplied interface name string to locate an ATM network interface. - * - * Arguments: - * name pointer to interface name string - * - * Returns: - * 0 interface not found - * else pointer to atm network interface structure - * - */ -struct atm_nif * -atm_nifname(name) - char *name; -{ - struct atm_pif *pip; - struct atm_nif *nip; - char n[IFNAMSIZ]; - int unit; - - /* - * Break down name - */ - if (atm_ifparse(name, n, sizeof(n), &unit)) - return ((struct atm_nif *)0); - - /* - * Search thru each physical interface - */ - for (pip = atm_interface_head; pip; pip = pip->pif_next) { - /* - * Looking for network interface - */ - for (nip = pip->pif_nif; nip; nip = nip->nif_pnext) { - struct ifnet *ifp = (struct ifnet *)nip; - if ((ifp->if_dunit == unit) && - (strcmp(ifp->if_dname, n) == 0)) - return (nip); - } - } - return (NULL); -} |
