A quick observation from dmesg after placing printks in
"net/ipv4/udp.c" for MIPS-malta
CONFIG_BASE_SMALL : 0
table->mask : 127
UDP_HTABLE_SIZE_MIN : 256
dmesg:
....
...
TCP: Hash tables configured (established 8192 bind 8192)
TCP reno registered
CONFIG_BASE_SMALL : 0
UDP hash table entries: 128 (order: 0, 4096 bytes)
table->mask, UDP_HTABLE_SIZE_MIN : 127 256
CONFIG_BASE_SMALL : 0
UDP-Lite hash table entries: 128 (order: 0, 4096 bytes)
table->mask, UDP_HTABLE_SIZE_MIN : 127 256
NET: Registered protocol family 1
....
....
printk(s) are placed in udp.c as listed below:
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 588f47a..ca7f6c6 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -2162,7 +2162,7 @@ __setup("uhash_entries=", set_uhash_entries);
void __init udp_table_init(struct udp_table *table, const char *name)
{
unsigned int i;
-
+ printk("CONFIG_BASE_SMALL : %d \n", CONFIG_BASE_SMALL);
if (!CONFIG_BASE_SMALL)
table->hash = alloc_large_system_hash(name,
2 * sizeof(struct udp_hslot),
@@ -2175,6 +2175,8 @@ void __init udp_table_init(struct udp_table
*table, const char *name)
/*
* Make sure hash table has the minimum size
*/
+ printk("table->mask, UDP_HTABLE_SIZE_MIN : %d %d
\n",table->mask,UDP_HTABLE_SIZE_MIN);
+
if (CONFIG_BASE_SMALL || table->mask < UDP_HTABLE_SIZE_MIN - 1) {
table->hash = kmalloc(UDP_HTABLE_SIZE_MIN *
2 * sizeof(struct udp_hslot), GFP_KERNEL);
~
Best Regards,
Maxin
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