Fix UTIME_OMIT handling
[dragonfly.git] / sys / net / if_mib.c
blob9bdc729f69e7d0384f51eab6d01dae79d3d6bdda
1 /*
2 * Copyright 1996 Massachusetts Institute of Technology
4 * Permission to use, copy, modify, and distribute this software and
5 * its documentation for any purpose and without fee is hereby
6 * granted, provided that both the above copyright notice and this
7 * permission notice appear in all copies, that both the above
8 * copyright notice and this permission notice appear in all
9 * supporting documentation, and that the name of M.I.T. not be used
10 * in advertising or publicity pertaining to distribution of the
11 * software without specific, written prior permission. M.I.T. makes
12 * no representations about the suitability of this software for any
13 * purpose. It is provided "as is" without express or implied
14 * warranty.
16 * THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''. M.I.T. DISCLAIMS
17 * ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE,
18 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
19 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT
20 * SHALL M.I.T. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
23 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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25 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
26 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
29 * $FreeBSD: src/sys/net/if_mib.c,v 1.8.2.1 2000/08/03 00:09:34 ps Exp $
30 * $DragonFly: src/sys/net/if_mib.c,v 1.7 2005/06/15 19:29:30 joerg Exp $
33 #include <sys/param.h>
34 #include <sys/systm.h>
35 #include <sys/kernel.h>
36 #include <sys/socket.h>
37 #include <sys/sysctl.h>
39 #include <net/if.h>
40 #include <net/if_var.h>
41 #include <net/if_mib.h>
44 * A sysctl(3) MIB for generic interface information. This information
45 * is exported in the net.link.generic branch, which has the following
46 * structure:
48 * net.link.generic .system - system-wide control variables
49 * and statistics (node)
50 * .ifdata.<ifindex>.general
51 * - what's in `struct ifdata'
52 * plus some other info
53 * .ifdata.<ifindex>.linkspecific
54 * - a link-type-specific data
55 * structure (as might be used
56 * by an SNMP agent
58 * Perhaps someday we will make addresses accessible via this interface
59 * as well (then there will be four such...). The reason that the
60 * index comes before the last element in the name is because it
61 * seems more orthogonal that way, particularly with the possibility
62 * of other per-interface data living down here as well (e.g., integrated
63 * services stuff).
66 SYSCTL_DECL(_net_link_generic);
67 SYSCTL_NODE(_net_link_generic, IFMIB_SYSTEM, system, CTLFLAG_RW, 0,
68 "Variables global to all interfaces");
69 SYSCTL_INT(_net_link_generic_system, IFMIB_IFCOUNT, ifcount, CTLFLAG_RD,
70 &if_index, 0, "Number of configured interfaces");
72 static int
73 sysctl_ifdata(SYSCTL_HANDLER_ARGS) /* XXX bad syntax! */
75 int *name = (int *)arg1;
76 int error;
77 u_int namelen = arg2;
78 struct ifnet *ifp;
79 struct ifmibdata ifmd;
81 if (namelen != 2)
82 return EINVAL;
85 * Hold the ifnet lock while we are accessing the ifp
86 * obtained through ifindex2ifnet.
88 ifnet_lock();
90 if (name[0] <= 0 || name[0] > if_index ||
91 ifindex2ifnet[name[0]] == NULL) {
92 ifnet_unlock();
93 return ENOENT;
96 ifp = ifindex2ifnet[name[0]];
98 switch(name[1]) {
99 default:
100 ifnet_unlock();
101 return ENOENT;
103 case IFDATA_GENERAL:
104 bzero(&ifmd, sizeof(ifmd));
105 strlcpy(ifmd.ifmd_name, ifp->if_xname, sizeof(ifmd.ifmd_name));
107 #define COPY(fld) ifmd.ifmd_##fld = ifp->if_##fld
108 COPY(pcount);
109 COPY(flags);
110 COPY(data);
111 #undef COPY
112 #define COPY_DATA(name) IFNET_STAT_GET(ifp, name, ifmd.ifmd_data.ifi_##name)
113 COPY_DATA(ipackets);
114 COPY_DATA(ierrors);
115 COPY_DATA(opackets);
116 COPY_DATA(oerrors);
117 COPY_DATA(collisions);
118 COPY_DATA(ibytes);
119 COPY_DATA(obytes);
120 COPY_DATA(imcasts);
121 COPY_DATA(omcasts);
122 COPY_DATA(iqdrops);
123 COPY_DATA(noproto);
124 COPY_DATA(oqdrops);
125 #undef COPY_DATA
127 ifmd.ifmd_snd_maxlen = ifp->if_snd.altq_maxlen;
128 #ifdef notyet
129 ifmd.ifmd_snd_len = ifp->if_snd.ifq_len;
130 ifmd.ifmd_snd_drops = ifp->if_snd.ifq_drops;
131 #endif
133 error = SYSCTL_OUT(req, &ifmd, sizeof ifmd);
134 if (error || !req->newptr) {
135 ifnet_unlock();
136 return error;
139 error = SYSCTL_IN(req, &ifmd, sizeof ifmd);
140 if (error) {
141 ifnet_unlock();
142 return error;
145 #define DONTCOPY(fld) ifmd.ifmd_data.ifi_##fld = ifp->if_data.ifi_##fld
146 DONTCOPY(type);
147 DONTCOPY(physical);
148 DONTCOPY(addrlen);
149 DONTCOPY(hdrlen);
150 DONTCOPY(mtu);
151 DONTCOPY(metric);
152 DONTCOPY(baudrate);
153 #undef DONTCOPY
154 #define COPY(fld) ifp->if_##fld = ifmd.ifmd_##fld
155 COPY(data);
156 #undef COPY
157 #define COPY_DATA(name) IFNET_STAT_SET(ifp, name, ifmd.ifmd_data.ifi_##name)
158 COPY_DATA(ipackets);
159 COPY_DATA(ierrors);
160 COPY_DATA(opackets);
161 COPY_DATA(oerrors);
162 COPY_DATA(collisions);
163 COPY_DATA(ibytes);
164 COPY_DATA(obytes);
165 COPY_DATA(imcasts);
166 COPY_DATA(omcasts);
167 COPY_DATA(iqdrops);
168 COPY_DATA(noproto);
169 COPY_DATA(oqdrops);
170 #undef COPY_DATA
172 #ifdef notyet
173 ifp->if_snd.ifq_maxlen = ifmd.ifmd_snd_maxlen;
174 ifp->if_snd.ifq_drops = ifmd.ifmd_snd_drops;
175 #endif
176 break;
178 case IFDATA_LINKSPECIFIC:
179 error = SYSCTL_OUT(req, ifp->if_linkmib, ifp->if_linkmiblen);
180 if (error || !req->newptr) {
181 ifnet_unlock();
182 return error;
185 error = SYSCTL_IN(req, ifp->if_linkmib, ifp->if_linkmiblen);
186 if (error) {
187 ifnet_unlock();
188 return error;
192 ifnet_unlock();
193 return 0;
196 SYSCTL_NODE(_net_link_generic, IFMIB_IFDATA, ifdata, CTLFLAG_RW,
197 sysctl_ifdata, "Interface table");