int _set(ng_netdev_t *dev, netopt_t opt, void *value, size_t value_len)
{
(void)dev;
switch (opt) {
case NETOPT_ADDRESS:
return _set_address(value, value_len);
case NETOPT_CHANNEL:
return _set_channel(value, value_len);
case NETOPT_NID:
return _set_pan(value, value_len);
case NETOPT_TX_POWER:
return _set_txpower(value, value_len);
case NETOPT_STATE:
return _set_state(value, value_len);
default:
return -ENOTSUP;
}
}
/*
* Print a description of the network interfaces.
*/
void
intpr(int interval)
{
oid ifcol_oid[] = { 1,3,6,1,2,1,2,2,1,0 };
size_t ifcol_len = OID_LENGTH( ifcol_oid );
struct _if_info *if_head, *if_tail, *cur_if;
netsnmp_variable_list *var, *vp;
/*
* Track maximum field widths, expanding as necessary
* This is one reason why results can't be
* displayed immediately they are retrieved.
*/
int max_name = 4, max_ip = 7, max_route = 7, max_outq = 5;
int max_ipkts = 5, max_ierrs = 5, max_opkts = 5, max_oerrs = 5;
int max_ibytes = 6, max_obytes = 6;
int i;
if (interval) {
sidewaysintpr((unsigned)interval);
return;
}
/*
* The traditional "netstat -i" output combines information
* from two SNMP tables:
* ipAddrTable (for the IP address/network)
* ifTable (for the interface statistics)
*
* The previous approach was to retrieve (and save) the
* address information first. Then walk the main ifTable,
* add the relevant stored addresses, and saving the
* full information for each interface, before displaying
* the results as a separate pass.
*
* This code reverses this general structure, by first retrieving
* (and storing) the interface statistics for the whole table,
* then inserting the address information obtained from the
* ipAddrTable, and finally displaying the results.
* Such an arrangement should make it easier to extend this
* to handle non-IP interfaces (hence not in ipAddrTable)
*/
if_head = NULL;
if_tail = NULL;
var = NULL;
#define ADD_IFVAR( x ) ifcol_oid[ ifcol_len-1 ] = x; \
snmp_varlist_add_variable( &var, ifcol_oid, ifcol_len, ASN_NULL, NULL, 0)
ADD_IFVAR( 2 ); /* ifName */
ADD_IFVAR( 4 ); /* ifMtu */
ADD_IFVAR( 8 ); /* ifOperStatus */
/*
* The Net/Open-BSD behaviour is to display *either* byte
* counts *or* packet/error counts (but not both). FreeBSD
* integrates the byte counts into the traditional display.
*
* The previous 'snmpnetstat' implementation followed the
* separatist model. This re-write offers an opportunity
* to adopt the (more useful, IMO) Free-BSD approach.
*
* Or we could perhaps support both styles? :-)
*/
if (bflag || oflag) {
ADD_IFVAR( 10 ); /* ifInOctets */
ADD_IFVAR( 16 ); /* ifOutOctets */
}
if (!oflag) {
ADD_IFVAR( 11 ); /* ifInUcastPkts */
ADD_IFVAR( 12 ); /* ifInNUcastPkts */
ADD_IFVAR( 14 ); /* ifInErrors */
ADD_IFVAR( 17 ); /* ifOutUcastPkts */
ADD_IFVAR( 18 ); /* ifOutNUcastPkts */
ADD_IFVAR( 20 ); /* ifOutErrors */
ADD_IFVAR( 21 ); /* ifOutQLen */
}
#if 0
if (tflag) {
ADD_IFVAR( XX ); /* ??? */
}
#endif
if (dflag) {
ADD_IFVAR( 19 ); /* ifOutDiscards */
}
#undef ADD_IFVAR
/*
* Now walk the ifTable, creating a list of interfaces
*/
while ( 1 ) {
if (netsnmp_query_getnext( var, ss ) != SNMP_ERR_NOERROR)
break;
ifcol_oid[ ifcol_len-1 ] = 2; /* ifDescr */
if ( snmp_oid_compare( ifcol_oid, ifcol_len,
var->name, ifcol_len) != 0 )
break; /* End of Table */
cur_if = SNMP_MALLOC_TYPEDEF( struct _if_info );
if (!cur_if)
break;
cur_if->ifindex = var->name[ var->name_length-1 ];
for ( vp=var; vp; vp=vp->next_variable ) {
if ( ! vp->val.integer )
continue;
if ( var->name[ var->name_length-1 ] != cur_if->ifindex ) {
/*
* Inconsistent index information
* XXX - Try to recover ?
*/
SNMP_FREE( cur_if );
cur_if = NULL;
break; /* not for now, no */
}
switch ( vp->name[ var->name_length-2 ] ) {
case 2: /* ifDescr */
if (vp->val_len >= sizeof(cur_if->name))
vp->val_len = sizeof(cur_if->name)-1;
memmove( cur_if->name, vp->val.string, vp->val_len );
cur_if->name[vp->val_len] = 0;
if ((i = strlen(cur_if->name) + 1) > max_name)
max_name = i;
break;
case 4: /* ifMtu */
cur_if->mtu = *vp->val.integer;
break;
case 8: /* ifOperStatus */
cur_if->operstatus = *vp->val.integer;
/* XXX - any special processing ?? */
break;
case 10: /* ifInOctets */
sprintf(cur_if->s_ibytes, "%lu", *vp->val.integer);
i = strlen(cur_if->s_ibytes);
if (i > max_ibytes)
max_ibytes = i;
break;
case 11: /* ifInUcastPkts */
cur_if->ipkts += *vp->val.integer;
sprintf(cur_if->s_ipkts, "%lu", cur_if->ipkts);
i = strlen(cur_if->s_ipkts);
if (i > max_ipkts)
max_ipkts = i;
break;
case 12: /* ifInNUcastPkts */
cur_if->ipkts += *vp->val.integer;
sprintf(cur_if->s_ipkts, "%lu", cur_if->ipkts);
i = strlen(cur_if->s_ipkts);
if (i > max_ipkts)
max_ipkts = i;
break;
case 14: /* ifInErrors */
sprintf(cur_if->s_ierrs, "%lu", *vp->val.integer);
i = strlen(cur_if->s_ierrs);
if (i > max_ierrs)
max_ierrs = i;
break;
case 16: /* ifOutOctets */
sprintf(cur_if->s_obytes, "%lu", *vp->val.integer);
i = strlen(cur_if->s_obytes);
if (i > max_obytes)
max_obytes = i;
break;
case 17: /* ifOutUcastPkts */
cur_if->opkts += *vp->val.integer;
sprintf(cur_if->s_opkts, "%lu", cur_if->opkts);
i = strlen(cur_if->s_opkts);
if (i > max_opkts)
max_opkts = i;
break;
case 18: /* ifOutNUcastPkts */
cur_if->opkts += *vp->val.integer;
sprintf(cur_if->s_opkts, "%lu", cur_if->opkts);
i = strlen(cur_if->s_opkts);
if (i > max_opkts)
max_opkts = i;
break;
case 19: /* ifOutDiscards */
cur_if->drops = *vp->val.integer;
break;
case 20: /* ifOutErrors */
sprintf(cur_if->s_oerrs, "%lu", *vp->val.integer);
i = strlen(cur_if->s_oerrs);
if (i > max_oerrs)
max_oerrs = i;
break;
case 21: /* ifOutQLen */
sprintf(cur_if->s_outq, "%lu", *vp->val.integer);
i = strlen(cur_if->s_outq);
if (i > max_outq)
max_outq = i;
break;
}
}
/*
* XXX - Perhaps query ifXTable for additional info ??
* (ifName/ifAlias, or HC counters)
*/
/*
* If we're to monitor a particular interface, then
* ignore all others. It would be more efficient
* to check this earlier (as part of processing
* the varbind list). But performing this test here
* means we can recognise ifXTable names as well)
*/
if ( intrface && strcmp( cur_if->name, intrface ) != 0) {
SNMP_FREE( cur_if );
cur_if = NULL;
}
/*
* Insert the IP address and network settings, and
* add the new _if_stat structure to the list.
*/
if ( cur_if ) {
_set_address( cur_if );
i = strlen(cur_if->ip);
if (i > max_ip)
max_ip = i;
i = strlen(cur_if->route);
if (i > max_route)
max_route = i;
if ( if_tail ) {
if_tail->next = cur_if;
if_tail = cur_if;
} else {
if_head = cur_if;
if_tail = cur_if;
}
}
} /* while (1) */
/*
* Now display the specified results (in Free-BSD format)
* setting the field widths appropriately....
*/
printf("%*.*s %5.5s %*.*s %*.*s",
-max_name, max_name, "Name", "Mtu",
-max_route, max_route, "Network",
-max_ip, max_ip, "Address");
if (oflag) {
printf(" %*s %*s", max_ibytes, "Ibytes",
max_obytes, "Obytes");
} else {
printf(" %*s %*s", max_ipkts, "Ipkts",
max_ierrs, "Ierrs");
if (bflag)
printf(" %*s", max_ibytes, "Ibytes");
printf(" %*s %*s", max_opkts, "Opkts",
max_oerrs, "Oerrs");
if (bflag)
printf(" %*s", max_obytes, "Obytes");
printf(" %*s", max_outq, "Queue");
}
/* if (tflag)
printf(" %s", "Time");
*/
if (dflag)
printf(" %s", "Drop");
putchar('\n');
for (cur_if = if_head; cur_if; cur_if=cur_if->next) {
if (cur_if->name[0] == 0)
continue;
printf( "%*.*s %5d", -max_name, max_name, cur_if->name, cur_if->mtu);
printf(" %*.*s", -max_route, max_route, cur_if->route);
printf(" %*.*s", -max_ip, max_ip, cur_if->ip);
if (oflag) {
printf(" %*s %*s", max_ibytes, cur_if->s_ibytes,
max_obytes, cur_if->s_obytes);
} else {
printf(" %*s %*s", max_ipkts, cur_if->s_ipkts,
max_ierrs, cur_if->s_ierrs);
if (bflag)
printf(" %*s", max_ibytes, cur_if->s_ibytes);
printf(" %*s %*s", max_opkts, cur_if->s_opkts,
max_oerrs, cur_if->s_oerrs);
if (bflag)
printf(" %*s", max_obytes, cur_if->s_obytes);
printf(" %*s", max_outq, cur_if->s_outq);
}
/* if (tflag)
printf(" %4d", cur_if->???);
*/
if (dflag)
printf(" %4d", cur_if->drops);
putchar('\n');
}
/*
* ... and tidy up.
*/
for (cur_if = if_head; cur_if; cur_if=if_head) {
if_head=cur_if->next;
cur_if->next = NULL;
SNMP_FREE( cur_if );
}
}
