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[/] [or1k/] [trunk/] [rtems-20020807/] [cpukit/] [libnetworking/] [rtems/] [rtems_showroute.c] - Rev 1765
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/* * rtems_showroute.c,v 1.6 2000/01/21 14:49:31 joel Exp */ #include <sys/param.h> #include <sys/queue.h> #include <sys/systm.h> #include <sys/kernel.h> #include <sys/sysctl.h> #include <sys/proc.h> #include <sys/mbuf.h> #include <sys/socket.h> #include <sys/socketvar.h> #include <sys/domain.h> #include <net/if.h> #include <net/if_dl.h> #include <net/route.h> #include <netinet/in.h> #include <arpa/inet.h> /* * We'll use the application versions of realloc and free. */ #undef free #undef malloc #include <stdlib.h> /* * Information per route */ struct rinfo { struct sockaddr dst; union { struct sockaddr sa; struct sockaddr_in sin; struct sockaddr_dl sdl; } un; unsigned long pksent; unsigned long expire; int flags; char ifname[16]; short ifunit; short refcnt; }; /* * Information per display */ struct dinfo { int capacity; int count; struct rinfo *routes; }; /* * Copy address */ static void copyAddress (void *to, void *from, int tolen) { int ncopy; struct sockaddr dummy; if (from == NULL) { /* * Create a fake address of unspecified type */ from = &dummy; dummy.sa_len = 4; dummy.sa_family = AF_UNSPEC; } ncopy = ((struct sockaddr *)from)->sa_len; if (ncopy > tolen) ncopy = tolen; memcpy (to, from, ncopy); } /* * Package everything up before printing it. * We don't want to block all network operations till * the printing completes! */ static int show_inet_route (rn, vw) struct radix_node *rn; void *vw; { struct rtentry *rt = (struct rtentry *)rn; struct ifnet *ifp; struct dinfo *dp = (struct dinfo *)vw; struct rinfo *r; /* * Get a pointer to a new route info structure */ if (dp->count >= dp->capacity) { r = realloc (dp->routes, (sizeof *r) * (dp->capacity + 20)); if (r == 0) return ENOMEM; dp->capacity += 20; dp->routes = r; } r = dp->routes + dp->count++; /* * Fill in the route info structure */ copyAddress (&r->dst, rt_key(rt), sizeof r->dst); if (rt->rt_flags & (RTF_GATEWAY | RTF_HOST)) { copyAddress (&r->un, rt->rt_gateway, sizeof r->un); } else { /* * Create a fake address to hold the mask */ struct sockaddr_in dummy; dummy.sin_family = AF_INET; dummy.sin_len = sizeof dummy; dummy.sin_addr = ((struct sockaddr_in *)rt_mask(rt))->sin_addr; copyAddress (&r->un, &dummy, sizeof r->un); } r->flags = rt->rt_flags; r->refcnt = rt->rt_refcnt; r->pksent = rt->rt_rmx.rmx_pksent; r->expire = rt->rt_rmx.rmx_expire; ifp = rt->rt_ifp; strncpy (r->ifname, ifp->if_name, sizeof r->ifname); r->ifunit = ifp->if_unit; return 0; } /* * Convert link address to ASCII */ static char * link_ascii (struct sockaddr_dl *sdl, char *buf, int bufsize) { char *cp; int i; int first = 1; int nleft = sdl->sdl_alen; unsigned char *ap = LLADDR (sdl); static const char hextab[16] = "0123456789ABCDEF"; cp = buf; while (nleft && (bufsize > 4)) { if (first) { first = 0; } else { *cp++ = ':'; bufsize--; } i = *ap++; *cp++ = hextab[(i >> 4) & 0xf]; *cp++ = hextab[i & 0xf]; nleft--; bufsize -= 2; } *cp = '\0'; return buf; } void rtems_bsdnet_show_inet_routes (void) { struct radix_node_head *rnh; struct dinfo d; struct rinfo *r; int i, error; /* * For now we'll handle only AF_INET */ rnh = rt_tables[AF_INET]; if (!rnh) return; d.count = d.capacity = 0; d.routes = NULL; rtems_bsdnet_semaphore_obtain (); error = rnh->rnh_walktree(rnh, show_inet_route, &d); rtems_bsdnet_semaphore_release (); if (error) { printf ("Can't get route info: %s\n", strerror (error)); return; } if (d.count == 0) { printf ("No routes!\n"); return; } printf ("Destination Gateway/Mask/Hw Flags Refs Use Expire Interface\n"); for (i = 0, r = d.routes ; i < d.count ; i++, r++) { char buf[30]; char *cp, *fc, flagbuf[10]; const char *addr; unsigned long flagbit; struct sockaddr_in *sin; sin = (struct sockaddr_in *)&r->dst; if (sin->sin_addr.s_addr == INADDR_ANY) addr = "default"; else addr = inet_ntop (AF_INET, &sin->sin_addr, buf, sizeof buf); printf ("%-16s", addr); switch (r->un.sa.sa_family) { case AF_INET: addr = inet_ntop (AF_INET, &r->un.sin.sin_addr, buf, sizeof buf); break; case AF_LINK: addr = link_ascii (&r->un.sdl, buf, sizeof buf); break; default: addr = ""; break; } printf ("%-19s", addr); fc = "UGHRDM XLS"; for (flagbit = 0x1, cp = flagbuf ; *fc ; flagbit <<= 1, fc++) { if ((r->flags & flagbit) && (*fc != ' ')) *cp++ = *fc; } *cp = '\0'; printf ("%-10s%3d%9ld%7ld %.*s%d\n", flagbuf, r->refcnt, r->pksent, r->expire, (int)sizeof r->ifname, r->ifname, r->ifunit); } free (d.routes); }