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Index: sys/netinet/tcp_hostcache.h
===================================================================
--- sys/netinet/tcp_hostcache.h
+++ sys/netinet/tcp_hostcache.h
@@ -74,7 +74,7 @@
u_int hashsize;
u_int hashmask;
u_int bucket_limit;
- counter_u64_t cache_count;
+ u_int cache_count;
u_int cache_limit;
int expire;
int prune;
Index: sys/netinet/tcp_hostcache.c
===================================================================
--- sys/netinet/tcp_hostcache.c
+++ sys/netinet/tcp_hostcache.c
@@ -147,8 +147,8 @@
CTLFLAG_VNET | CTLFLAG_RDTUN, &VNET_NAME(tcp_hostcache.bucket_limit), 0,
"Per-bucket hash limit for hostcache");
-SYSCTL_COUNTER_U64(_net_inet_tcp_hostcache, OID_AUTO, count, CTLFLAG_VNET | CTLFLAG_RD,
- &VNET_NAME(tcp_hostcache.cache_count),
+SYSCTL_UINT(_net_inet_tcp_hostcache, OID_AUTO, count, CTLFLAG_VNET | CTLFLAG_RD,
+ &VNET_NAME(tcp_hostcache.cache_count), 0,
"Current number of entries in hostcache");
SYSCTL_INT(_net_inet_tcp_hostcache, OID_AUTO, expire, CTLFLAG_VNET | CTLFLAG_RW,
@@ -199,8 +199,7 @@
/*
* Initialize hostcache structures.
*/
- V_tcp_hostcache.cache_count = counter_u64_alloc(M_WAITOK);
- counter_u64_zero(V_tcp_hostcache.cache_count);
+ atomic_store_int(&V_tcp_hostcache.cache_count, 0);
V_tcp_hostcache.hashsize = TCP_HOSTCACHE_HASHSIZE;
V_tcp_hostcache.bucket_limit = TCP_HOSTCACHE_BUCKETLIMIT;
V_tcp_hostcache.expire = TCP_HOSTCACHE_EXPIRE;
@@ -268,9 +267,6 @@
/* Purge all hc entries. */
tcp_hc_purge_internal(1);
- /* Release the counter */
- counter_u64_free(V_tcp_hostcache.cache_count);
-
/* Free the uma zone and the allocated hash table. */
uma_zdestroy(V_tcp_hostcache.zone);
@@ -378,7 +374,7 @@
* If the bucket limit is reached, reuse the least-used element.
*/
if (hc_head->hch_length >= V_tcp_hostcache.bucket_limit ||
- counter_u64_fetch(V_tcp_hostcache.cache_count) >= V_tcp_hostcache.cache_limit) {
+ atomic_load_int(&V_tcp_hostcache.cache_count) >= V_tcp_hostcache.cache_limit) {
hc_entry = TAILQ_LAST(&hc_head->hch_bucket, hc_qhead);
/*
* At first we were dropping the last element, just to
@@ -395,7 +391,7 @@
}
TAILQ_REMOVE(&hc_head->hch_bucket, hc_entry, rmx_q);
V_tcp_hostcache.hashbase[hash].hch_length--;
- counter_u64_add(V_tcp_hostcache.cache_count, -1);
+ atomic_subtract_int(&V_tcp_hostcache.cache_count, 1);
TCPSTAT_INC(tcps_hc_bucketoverflow);
#if 0
uma_zfree(V_tcp_hostcache.zone, hc_entry);
@@ -428,7 +424,7 @@
*/
TAILQ_INSERT_HEAD(&hc_head->hch_bucket, hc_entry, rmx_q);
V_tcp_hostcache.hashbase[hash].hch_length++;
- counter_u64_add(V_tcp_hostcache.cache_count, 1);
+ atomic_add_int(&V_tcp_hostcache.cache_count, 1);
TCPSTAT_INC(tcps_hc_added);
return hc_entry;
@@ -644,7 +640,8 @@
/* Optimize Buffer length query by sbin/sysctl */
if (req->oldptr == NULL) {
- len = (counter_u64_fetch(V_tcp_hostcache.cache_count) + 1) * linesize;
+ len = (atomic_load_int(&V_tcp_hostcache.cache_count) + 1) *
+ linesize;
return (SYSCTL_OUT(req, NULL, len));
}
@@ -654,7 +651,8 @@
}
/* Use a buffer sized for one full bucket */
- sbuf_new_for_sysctl(&sb, NULL, V_tcp_hostcache.bucket_limit * linesize, req);
+ sbuf_new_for_sysctl(&sb, NULL, V_tcp_hostcache.bucket_limit *
+ linesize, req);
sbuf_printf(&sb,
"\nIP address MTU SSTRESH RTT RTTVAR "
@@ -716,7 +714,7 @@
hc_entry, rmx_q);
uma_zfree(V_tcp_hostcache.zone, hc_entry);
V_tcp_hostcache.hashbase[i].hch_length--;
- counter_u64_add(V_tcp_hostcache.cache_count, -1);
+ atomic_subtract_int(&V_tcp_hostcache.cache_count, 1);
} else
hc_entry->rmx_expire -= V_tcp_hostcache.prune;
}

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