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authorLinus Torvalds <torvalds@g5.osdl.org>2006-03-25 08:39:20 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-03-25 08:39:20 -0800
commitb55813a2e50088ca30df33fa62aeed5d3adb1796 (patch)
treebe50fe404e94869fe854766e190a5753dbc7dd49 /net/ipv4/tcp.c
parent368d17e068f691dba5a4f122c271db5ec9b2ebd6 (diff)
parent9e19bb6d7a0959f5028d46e1ab99c50f0d36eda8 (diff)
Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6: [NETFILTER] x_table.c: sem2mutex [IPV4]: Aggregate route entries with different TOS values [TCP]: Mark tcp_*mem[] __read_mostly. [TCP]: Set default max buffers from memory pool size [SCTP]: Fix up sctp_rcv return value [NET]: Take RTNL when unregistering notifier [WIRELESS]: Fix config dependencies. [NET]: Fill in a 32-bit hole in struct sock on 64-bit platforms. [NET]: Ensure device name passed to SO_BINDTODEVICE is NULL terminated. [MODULES]: Don't allow statically declared exports [BRIDGE]: Unaligned accesses in the ethernet bridge
Diffstat (limited to 'net/ipv4/tcp.c')
-rw-r--r--net/ipv4/tcp.c26
1 files changed, 16 insertions, 10 deletions
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 19ea5c0b094..87f68e787d0 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -257,6 +257,7 @@
#include <linux/fs.h>
#include <linux/random.h>
#include <linux/bootmem.h>
+#include <linux/cache.h>
#include <net/icmp.h>
#include <net/tcp.h>
@@ -275,9 +276,9 @@ atomic_t tcp_orphan_count = ATOMIC_INIT(0);
EXPORT_SYMBOL_GPL(tcp_orphan_count);
-int sysctl_tcp_mem[3];
-int sysctl_tcp_wmem[3] = { 4 * 1024, 16 * 1024, 128 * 1024 };
-int sysctl_tcp_rmem[3] = { 4 * 1024, 87380, 87380 * 2 };
+int sysctl_tcp_mem[3] __read_mostly;
+int sysctl_tcp_wmem[3] __read_mostly;
+int sysctl_tcp_rmem[3] __read_mostly;
EXPORT_SYMBOL(sysctl_tcp_mem);
EXPORT_SYMBOL(sysctl_tcp_rmem);
@@ -2081,7 +2082,8 @@ __setup("thash_entries=", set_thash_entries);
void __init tcp_init(void)
{
struct sk_buff *skb = NULL;
- int order, i;
+ unsigned long limit;
+ int order, i, max_share;
if (sizeof(struct tcp_skb_cb) > sizeof(skb->cb))
__skb_cb_too_small_for_tcp(sizeof(struct tcp_skb_cb),
@@ -2155,12 +2157,16 @@ void __init tcp_init(void)
sysctl_tcp_mem[1] = 1024 << order;
sysctl_tcp_mem[2] = 1536 << order;
- if (order < 3) {
- sysctl_tcp_wmem[2] = 64 * 1024;
- sysctl_tcp_rmem[0] = PAGE_SIZE;
- sysctl_tcp_rmem[1] = 43689;
- sysctl_tcp_rmem[2] = 2 * 43689;
- }
+ limit = ((unsigned long)sysctl_tcp_mem[1]) << (PAGE_SHIFT - 7);
+ max_share = min(4UL*1024*1024, limit);
+
+ sysctl_tcp_wmem[0] = SK_STREAM_MEM_QUANTUM;
+ sysctl_tcp_wmem[1] = 16*1024;
+ sysctl_tcp_wmem[2] = max(64*1024, max_share);
+
+ sysctl_tcp_rmem[0] = SK_STREAM_MEM_QUANTUM;
+ sysctl_tcp_rmem[1] = 87380;
+ sysctl_tcp_rmem[2] = max(87380, max_share);
printk(KERN_INFO "TCP: Hash tables configured "
"(established %d bind %d)\n",