d/freebsd-skq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

MFC r1.7:

Browse Source 
Check for altq presence during module init, and allow module to work even if
  altq is not present (just disable the altq bits in that case).
This commit is contained in:
philip 2005-12-03 14:45:05 +00:00
parent da676c8632
commit f8de49e67d
1 changed files with 47 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

49
usr.sbin/bsnmpd/modules/snmp_pf/pf_snmp.c
View File

@ -96,6 +96,8 @@ static struct pfq_table pfq_table;
static time_t pfq_table_age;
static int pfq_table_count;
static int altq_enabled = 0;
#define PFQ_TABLE_MAXAGE 5
/* Forward declarations */
@ -107,6 +109,8 @@ static struct pfi_entry * pfi_table_find(u_int idx);
static struct pfq_entry * pfq_table_find(u_int idx);
static struct pft_entry * pft_table_find(u_int idx);
static int altq_is_enabled(int pfdevice);
int
pf_status(struct snmp_context __unused *ctx, struct snmp_value *val,
u_int sub, u_int __unused vindex, enum snmp_op op)
@ -781,6 +785,10 @@ pf_altq(struct snmp_context __unused *ctx, struct snmp_value *val,
{
asn_subid_t which = val->var.subs[sub - 1];
if (!altq_enabled) {
return (SNMP_ERR_NOERROR);
}
if (op == SNMP_OP_SET)
return (SNMP_ERR_NOT_WRITEABLE);
@ -812,6 +820,10 @@ pf_altqq(struct snmp_context __unused *ctx, struct snmp_value *val,
asn_subid_t which = val->var.subs[sub - 1];
struct pfq_entry *e = NULL;
if (!altq_enabled) {
return (SNMP_ERR_NOERROR);
}
switch (op) {
case SNMP_OP_SET:
return (SNMP_ERR_NOT_WRITEABLE);
@ -1118,6 +1130,29 @@ pft_refresh(void)
return(-1);
}
/*
* check whether altq support is enabled in kernel
*/
static int
altq_is_enabled(int pfdev)
{
struct pfioc_altq pa;
errno = 0;
if (ioctl(pfdev, DIOCGETALTQS, &pa)) {
if (errno == ENODEV) {
syslog(LOG_INFO, "No ALTQ support in kernel\n"
"ALTQ related functions disabled\n");
return (0);
} else
syslog(LOG_ERR, "DIOCGETALTQS returned an error: %s",
strerror(errno));
return (-1);
}
return (1);
}
/*
* Implement the bsnmpd module interface
*/
@ -1132,13 +1167,21 @@ pf_init(struct lmodule *mod, int __unused argc, char __unused *argv[])
return (-1);
}
if ((altq_enabled = altq_is_enabled(dev)) == -1) {
syslog(LOG_ERR, "pf_init(): altq test failed");
return (-1);
}
/* Prepare internal state */
TAILQ_INIT(&pfi_table);
TAILQ_INIT(&pfq_table);
TAILQ_INIT(&pft_table);
pfi_refresh();
pfq_refresh();
if (altq_enabled) {
pfq_refresh();
}
pfs_refresh();
pft_refresh();
@ -1186,7 +1229,9 @@ static void
pf_dump(void)
{
pfi_refresh();
pfq_refresh();
if (altq_enabled) {
pfq_refresh();
}
pft_refresh();
syslog(LOG_ERR, "Dump: pfi_table_age = %jd",