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pf: use time_to for timestamps

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Use time_t rather than uint32_t to represent the timestamps. That means
we have 64 bits rather than 32 on all platforms except i386, avoiding
the Y2K38 issues on most platforms.

Reviewed by:	Zhenlei Huang
Sponsored by:	Rubicon Communications, LLC ("Netgate")
Differential Revision:	https://reviews.freebsd.org/D36837
This commit is contained in:
Kristof Provost 2022-09-29 14:45:03 +02:00
parent 1fc839f489
commit 1d090028d3
4 changed files with 18 additions and 14 deletions
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4
lib/libpfctl/libpfctl.h
View file

@ -102,7 +102,7 @@ struct pfctl_eth_rule {
uint64_t evaluations;
uint64_t packets[2];
uint64_t bytes[2];
uint32_t last_active_timestamp;
time_t last_active_timestamp;
/* Action */
char qname[PF_QNAME_SIZE];
@ -175,7 +175,7 @@ struct pfctl_rule {
uint64_t evaluations;
uint64_t packets[2];
uint64_t bytes[2];
uint32_t last_active_timestamp;
time_t last_active_timestamp;
struct pfi_kif *kif;
struct pfctl_anchor *anchor;

8
sbin/pfctl/pfctl.c
View file

@ -1020,8 +1020,8 @@ pfctl_print_eth_rule_counters(struct pfctl_eth_rule *rule, int opts)
char timestr[30];
if (rule->last_active_timestamp != 0) {
time_t last_active = rule->last_active_timestamp;
bcopy(ctime(&last_active), timestr, sizeof(timestr));
bcopy(ctime(&rule->last_active_timestamp), timestr,
sizeof(timestr));
*strchr(timestr, '\n') = '\0';
} else {
snprintf(timestr, sizeof(timestr), "N/A");
@ -1070,8 +1070,8 @@ pfctl_print_rule_counters(struct pfctl_rule *rule, int opts)
if (opts & PF_OPT_VERBOSE2) {
char timestr[30];
if (rule->last_active_timestamp != 0) {
time_t last_active = rule->last_active_timestamp;
bcopy(ctime(&last_active), timestr, sizeof(timestr));
bcopy(ctime(&rule->last_active_timestamp), timestr,
sizeof(timestr));
*strchr(timestr, '\n') = '\0';
} else {
snprintf(timestr, sizeof(timestr), "N/A");

6
sys/net/pfvar.h
View file

@ -305,6 +305,8 @@ pf_counter_u64_zero(struct pf_counter_u64 *pfcu64)
critical_exit(); \
} while (0)
#define pf_timestamp_pcpu_zone (sizeof(time_t) == 4 ? pcpu_zone_4 : pcpu_zone_8)
_Static_assert(sizeof(time_t) == 4 || sizeof(time_t) == 8, "unexpected time_t size");
SYSCTL_DECL(_net_pf);
MALLOC_DECLARE(M_PFHASH);
@ -681,7 +683,7 @@ struct pf_keth_rule {
counter_u64_t evaluations;
counter_u64_t packets[2];
counter_u64_t bytes[2];
uint32_t *timestamp;
time_t *timestamp;
/* Action */
char qname[PF_QNAME_SIZE];
@ -721,7 +723,7 @@ struct pf_krule {
struct pf_counter_u64 evaluations;
struct pf_counter_u64 packets[2];
struct pf_counter_u64 bytes[2];
uint32_t *timestamp;
time_t *timestamp;
struct pfi_kkif *kif;
struct pf_kanchor *anchor;

14
sys/netpfil/pf/pf_ioctl.c
View file

@ -344,7 +344,8 @@ pfattach_vnet(void)
V_pf_default_rule.states_tot = counter_u64_alloc(M_WAITOK);
V_pf_default_rule.src_nodes = counter_u64_alloc(M_WAITOK);
V_pf_default_rule.timestamp = uma_zalloc_pcpu(pcpu_zone_4, M_WAITOK | M_ZERO);
V_pf_default_rule.timestamp = uma_zalloc_pcpu(pf_timestamp_pcpu_zone,
M_WAITOK | M_ZERO);
#ifdef PF_WANT_32_TO_64_COUNTER
V_pf_kifmarker = malloc(sizeof(*V_pf_kifmarker), PFI_MTYPE, M_WAITOK | M_ZERO);
@ -534,7 +535,7 @@ pf_free_eth_rule(struct pf_keth_rule *rule)
counter_u64_free(rule->packets[i]);
counter_u64_free(rule->bytes[i]);
}
uma_zfree_pcpu(pcpu_zone_4, rule->timestamp);
uma_zfree_pcpu(pf_timestamp_pcpu_zone, rule->timestamp);
pf_keth_anchor_remove(rule);
free(rule, M_PFRULE);
@ -1786,7 +1787,8 @@ pf_krule_alloc(void)
rule = malloc(sizeof(struct pf_krule), M_PFRULE, M_WAITOK | M_ZERO);
mtx_init(&rule->rpool.mtx, "pf_krule_pool", NULL, MTX_DEF);
rule->timestamp = uma_zalloc_pcpu(pcpu_zone_4, M_WAITOK | M_ZERO);
rule->timestamp = uma_zalloc_pcpu(pf_timestamp_pcpu_zone,
M_WAITOK | M_ZERO);
return (rule);
}
@ -1820,7 +1822,7 @@ pf_krule_free(struct pf_krule *rule)
counter_u64_free(rule->states_cur);
counter_u64_free(rule->states_tot);
counter_u64_free(rule->src_nodes);
uma_zfree_pcpu(pcpu_zone_4, rule->timestamp);
uma_zfree_pcpu(pf_timestamp_pcpu_zone, rule->timestamp);
mtx_destroy(&rule->rpool.mtx);
free(rule, M_PFRULE);
@ -2868,7 +2870,7 @@ pfioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flags, struct thread *td
rule->packets[i] = counter_u64_alloc(M_WAITOK);
rule->bytes[i] = counter_u64_alloc(M_WAITOK);
}
rule->timestamp = uma_zalloc_pcpu(pcpu_zone_4,
rule->timestamp = uma_zalloc_pcpu(pf_timestamp_pcpu_zone,
M_WAITOK | M_ZERO);
PF_RULES_WLOCK();
@ -6769,7 +6771,7 @@ pf_unload_vnet(void)
counter_u64_free(V_pf_default_rule.states_cur);
counter_u64_free(V_pf_default_rule.states_tot);
counter_u64_free(V_pf_default_rule.src_nodes);
uma_zfree_pcpu(pcpu_zone_4, V_pf_default_rule.timestamp);
uma_zfree_pcpu(pf_timestamp_pcpu_zone, V_pf_default_rule.timestamp);
for (int i = 0; i < PFRES_MAX; i++)
counter_u64_free(V_pf_status.counters[i]);