diff options
Diffstat (limited to 'pfinet/linux-src/net/ipv4/tcp.c')
| -rw-r--r-- | pfinet/linux-src/net/ipv4/tcp.c | 43 |
1 files changed, 42 insertions, 1 deletions
diff --git a/pfinet/linux-src/net/ipv4/tcp.c b/pfinet/linux-src/net/ipv4/tcp.c index 65763215..68b7e5e7 100644 --- a/pfinet/linux-src/net/ipv4/tcp.c +++ b/pfinet/linux-src/net/ipv4/tcp.c @@ -5,7 +5,7 @@ * * Implementation of the Transmission Control Protocol(TCP). * - * Version: $Id: tcp.c,v 1.140.2.4 1999/08/09 03:13:12 davem Exp $ + * Version: $Id: tcp.c,v 1.140.2.5 1999/09/23 19:21:16 davem Exp $ * * Authors: Ross Biro, <bir7@leland.Stanford.Edu> * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> @@ -1798,6 +1798,8 @@ extern void __skb_cb_too_small_for_tcp(int, int); void __init tcp_init(void) { struct sk_buff *skb = NULL; + unsigned long goal; + int order; if(sizeof(struct tcp_skb_cb) > sizeof(skb->cb)) __skb_cb_too_small_for_tcp(sizeof(struct tcp_skb_cb), @@ -1823,4 +1825,43 @@ void __init tcp_init(void) NULL, NULL); if(!tcp_timewait_cachep) panic("tcp_init: Cannot alloc tcp_tw_bucket cache."); + + /* Size and allocate TCP hash tables. */ + goal = num_physpages >> (20 - PAGE_SHIFT); + for (order = 0; (1UL << order) < goal; order++) + ; + do { + tcp_ehash_size = (1UL << order) * PAGE_SIZE / + sizeof(struct sock *); + tcp_ehash = (struct sock **) + __get_free_pages(GFP_ATOMIC, order); + } while (tcp_ehash == NULL && --order >= 0); + + if (!tcp_ehash) + panic("Failed to allocate TCP established hash table\n"); + memset(tcp_ehash, 0, tcp_ehash_size * sizeof(struct sock *)); + + goal = (((1UL << order) * PAGE_SIZE) / sizeof(struct tcp_bind_bucket *)); + if (goal > (64 * 1024)) { + /* Don't size the bind-hash larger than the port + * space, that is just silly. + */ + goal = (((64 * 1024) * sizeof(struct tcp_bind_bucket *)) / PAGE_SIZE); + for (order = 0; (1UL << order) < goal; order++) + ; + } + + do { + tcp_bhash_size = (1UL << order) * PAGE_SIZE / + sizeof(struct tcp_bind_bucket *); + tcp_bhash = (struct tcp_bind_bucket **) + __get_free_pages(GFP_ATOMIC, order); + } while (tcp_bhash == NULL && --order >= 0); + + if (!tcp_bhash) + panic("Failed to allocate TCP bind hash table\n"); + memset(tcp_bhash, 0, tcp_bhash_size * sizeof(struct tcp_bind_bucket *)); + + printk("TCP: Hash tables configured (ehash %d bhash %d)\n", + tcp_ehash_size, tcp_bhash_size); } |