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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [libnetworking/] [rtems/] [rtems_showroute.c] - Blame information for rev 173

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1 30 unneback
/*
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 *  $Id: rtems_showroute.c,v 1.2 2001-09-27 12:02:00 chris Exp $
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 */
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#include <sys/param.h>
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#include <sys/queue.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/sysctl.h>
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#include <sys/proc.h>
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#include <sys/mbuf.h>
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#include <sys/socket.h>
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#include <sys/socketvar.h>
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#include <sys/domain.h>
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#include <net/if.h>
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#include <net/if_dl.h>
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#include <net/route.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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/*
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 * We'll use the application versions of realloc and free.
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 */
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#undef free
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#undef malloc
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#include <stdlib.h>
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/*
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 * Information per route
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 */
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struct rinfo {
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        struct sockaddr dst;
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        union {
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                struct sockaddr         sa;
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                struct sockaddr_in      sin;
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                struct sockaddr_dl      sdl;
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        } un;
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        unsigned long   pksent;
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        unsigned long   expire;
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        int             flags;
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        char            ifname[16];
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        short           ifunit;
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        short           refcnt;
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};
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/*
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 * Information per display
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 */
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struct dinfo {
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        int             capacity;
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        int             count;
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        struct rinfo    *routes;
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};
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/*
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 * Copy address
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 */
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static void
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copyAddress (void *to, void *from, int tolen)
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{
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        int ncopy;
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        struct sockaddr dummy;
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        if (from == NULL) {
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                /*
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                 * Create a fake address of unspecified type
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                 */
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                from = &dummy;
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                dummy.sa_len = 4;
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                dummy.sa_family = AF_UNSPEC;
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        }
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        ncopy = ((struct sockaddr *)from)->sa_len;
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        if (ncopy > tolen)
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                ncopy = tolen;
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        memcpy (to, from, ncopy);
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}
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/*
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 * Package everything up before printing it.
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 * We don't want to block all network operations till
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 * the printing completes!
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 */
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static int
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show_inet_route (rn, vw)
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        struct radix_node *rn;
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        void *vw;
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{
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        struct rtentry *rt = (struct rtentry *)rn;
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        struct ifnet *ifp;
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        struct dinfo *dp = (struct dinfo *)vw;
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        struct rinfo *r;
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        /*
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         * Get a pointer to a new route info structure
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         */
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        if (dp->count >= dp->capacity) {
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                r = realloc (dp->routes, (sizeof *r) * (dp->capacity + 20));
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                if (r == 0)
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                        return ENOMEM;
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                dp->capacity += 20;
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                dp->routes = r;
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        }
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        r = dp->routes + dp->count++;
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        /*
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         * Fill in the route info structure
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         */
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        copyAddress (&r->dst, rt_key(rt), sizeof r->dst);
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        if (rt->rt_flags & (RTF_GATEWAY | RTF_HOST)) {
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                copyAddress (&r->un, rt->rt_gateway, sizeof r->un);
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        }
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        else {
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                /*
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                 * Create a fake address to hold the mask
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                 */
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                struct sockaddr_in dummy;
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                dummy.sin_family = AF_INET;
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                dummy.sin_len = sizeof dummy;
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                dummy.sin_addr = ((struct sockaddr_in *)rt_mask(rt))->sin_addr;
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                copyAddress (&r->un, &dummy, sizeof r->un);
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        }
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        r->flags = rt->rt_flags;
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        r->refcnt = rt->rt_refcnt;
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        r->pksent = rt->rt_rmx.rmx_pksent;
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        r->expire = rt->rt_rmx.rmx_expire;
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        ifp = rt->rt_ifp;
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        strncpy (r->ifname, ifp->if_name, sizeof r->ifname);
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        r->ifunit = ifp->if_unit;
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        return 0;
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}
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/*
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 * Convert link address to ASCII
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 */
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static char *
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link_ascii (struct sockaddr_dl *sdl, char *buf, int bufsize)
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{
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        char *cp;
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        int i;
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        int first = 1;
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        int nleft = sdl->sdl_alen;
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        unsigned char *ap = LLADDR (sdl);
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        static const char hextab[16] = "0123456789ABCDEF";
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        cp = buf;
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        while (nleft && (bufsize > 4)) {
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                if (first) {
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                        first = 0;
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                }
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                else {
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                        *cp++ = ':';
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                        bufsize--;
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                }
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                i = *ap++;
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                *cp++ = hextab[(i >> 4) & 0xf];
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                *cp++ = hextab[i & 0xf];
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                nleft--;
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                bufsize -= 2;
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        }
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        *cp = '\0';
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        return buf;
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}
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void
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rtems_bsdnet_show_inet_routes (void)
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{
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        struct radix_node_head *rnh;
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        struct dinfo d;
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        struct rinfo *r;
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        int i, error;
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        /*
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         * For now we'll handle only AF_INET
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         */
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        rnh = rt_tables[AF_INET];
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        if (!rnh)
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                return;
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        d.count = d.capacity = 0;
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        d.routes = NULL;
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        rtems_bsdnet_semaphore_obtain ();
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        error = rnh->rnh_walktree(rnh, show_inet_route, &d);
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        rtems_bsdnet_semaphore_release ();
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        if (error) {
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                printf ("Can't get route info: %s\n", strerror (error));
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                return;
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        }
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        if (d.count == 0) {
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                printf ("No routes!\n");
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                return;
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        }
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        printf ("Destination     Gateway/Mask/Hw    Flags     Refs     Use Expire Interface\n");
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        for (i = 0, r = d.routes ; i < d.count ; i++, r++) {
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                char buf[30];
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                char *cp, *fc, flagbuf[10];
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                const char *addr;
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                unsigned long flagbit;
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                struct sockaddr_in *sin;
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                sin = (struct sockaddr_in *)&r->dst;
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                if (sin->sin_addr.s_addr == INADDR_ANY)
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                        addr = "default";
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                else
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                        addr = inet_ntop (AF_INET, &sin->sin_addr, buf, sizeof buf);
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                printf ("%-16s", addr);
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                switch (r->un.sa.sa_family) {
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                case AF_INET:
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                        addr = inet_ntop (AF_INET, &r->un.sin.sin_addr, buf, sizeof buf);
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                        break;
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                case AF_LINK:
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                        addr = link_ascii (&r->un.sdl, buf, sizeof buf);
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                        break;
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                default:
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                        addr = "";
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                        break;
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                }
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                printf ("%-19s", addr);
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                fc = "UGHRDM   XLS";
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                for (flagbit = 0x1, cp = flagbuf ; *fc ; flagbit <<= 1, fc++) {
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                        if ((r->flags & flagbit) && (*fc != ' '))
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                                *cp++ = *fc;
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                }
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                *cp = '\0';
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                printf ("%-10s%3d%9ld%7ld %.*s%d\n", flagbuf,
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                                        r->refcnt, r->pksent,
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                                        r->expire,
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                                        (int)sizeof r->ifname, r->ifname,
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                                        r->ifunit);
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        }
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        free (d.routes);
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}

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