2 * Copyright 1996 Massachusetts Institute of Technology
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5 * its documentation for any purpose and without fee is hereby
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32 #include <sys/param.h>
33 #include <sys/systm.h>
34 #include <sys/kernel.h>
35 #include <sys/malloc.h>
36 #include <sys/socket.h>
37 #include <sys/sysctl.h>
40 #include <net/if_var.h>
41 #include <net/if_mib.h>
45 * A sysctl(3) MIB for generic interface information. This information
46 * is exported in the net.link.generic branch, which has the following
49 * net.link.generic .system - system-wide control variables
50 * and statistics (node)
51 * .ifdata.<ifindex>.general
52 * - what's in `struct ifdata'
53 * plus some other info
54 * .ifdata.<ifindex>.linkspecific
55 * - a link-type-specific data
56 * structure (as might be used
59 * Perhaps someday we will make addresses accessible via this interface
60 * as well (then there will be four such...). The reason that the
61 * index comes before the last element in the name is because it
62 * seems more orthogonal that way, particularly with the possibility
63 * of other per-interface data living down here as well (e.g., integrated
67 SYSCTL_DECL(_net_link_generic);
68 static SYSCTL_NODE(_net_link_generic, IFMIB_SYSTEM, system, CTLFLAG_RW, 0,
69 "Variables global to all interfaces");
71 SYSCTL_INT(_net_link_generic_system, IFMIB_IFCOUNT, ifcount,
72 CTLFLAG_VNET | CTLFLAG_RD, &VNET_NAME(if_index), 0,
73 "Number of configured interfaces");
76 sysctl_ifdata(SYSCTL_HANDLER_ARGS) /* XXX bad syntax! */
78 int *name = (int *)arg1;
82 struct ifmibdata ifmd;
90 ifp = ifnet_byindex_ref(name[0]);
100 bzero(&ifmd, sizeof(ifmd));
101 strlcpy(ifmd.ifmd_name, ifp->if_xname, sizeof(ifmd.ifmd_name));
103 ifmd.ifmd_pcount = ifp->if_pcount;
104 if_data_copy(ifp, &ifmd.ifmd_data);
106 ifmd.ifmd_flags = ifp->if_flags | ifp->if_drv_flags;
107 ifmd.ifmd_snd_len = ifp->if_snd.ifq_len;
108 ifmd.ifmd_snd_maxlen = ifp->if_snd.ifq_maxlen;
109 ifmd.ifmd_snd_drops =
110 ifp->if_get_counter(ifp, IFCOUNTER_OQDROPS);
112 error = SYSCTL_OUT(req, &ifmd, sizeof ifmd);
117 case IFDATA_LINKSPECIFIC:
118 error = SYSCTL_OUT(req, ifp->if_linkmib, ifp->if_linkmiblen);
119 if (error || !req->newptr)
122 error = SYSCTL_IN(req, ifp->if_linkmib, ifp->if_linkmiblen);
127 case IFDATA_DRIVERNAME:
128 /* 20 is enough for 64bit ints */
129 dlen = strlen(ifp->if_dname) + 20 + 1;
130 if ((dbuf = malloc(dlen, M_TEMP, M_NOWAIT)) == NULL) {
134 if (ifp->if_dunit == IF_DUNIT_NONE)
135 strcpy(dbuf, ifp->if_dname);
137 sprintf(dbuf, "%s%d", ifp->if_dname, ifp->if_dunit);
139 error = SYSCTL_OUT(req, dbuf, strlen(dbuf) + 1);
140 if (error == 0 && req->newptr != NULL)
150 static SYSCTL_NODE(_net_link_generic, IFMIB_IFDATA, ifdata, CTLFLAG_RW,
151 sysctl_ifdata, "Interface table");