#include <asm/uaccess.h>
#include <asm/ioctls.h>
-int sysctl_tcp_fin_timeout = TCP_FIN_TIMEOUT;
+int sysctl_tcp_fin_timeout __read_mostly = TCP_FIN_TIMEOUT;
DEFINE_SNMP_STAT(struct tcp_mib, tcp_statistics) __read_mostly;
skb->truesize += copy;
sk->sk_wmem_queued += copy;
sk->sk_forward_alloc -= copy;
- skb->ip_summed = CHECKSUM_HW;
+ skb->ip_summed = CHECKSUM_PARTIAL;
tp->write_seq += copy;
TCP_SKB_CB(skb)->end_seq += copy;
skb_shinfo(skb)->gso_segs = 0;
* Check whether we can use HW checksum.
*/
if (sk->sk_route_caps & NETIF_F_ALL_CSUM)
- skb->ip_summed = CHECKSUM_HW;
+ skb->ip_summed = CHECKSUM_PARTIAL;
skb_entail(sk, tp, skb);
copy = size_goal;
* receive buffer and there was a small segment
* in queue.
*/
- (copied > 0 && (icsk->icsk_ack.pending & ICSK_ACK_PUSHED) &&
- !icsk->icsk_ack.pingpong && !atomic_read(&sk->sk_rmem_alloc)))
+ (copied > 0 &&
+ ((icsk->icsk_ack.pending & ICSK_ACK_PUSHED2) ||
+ ((icsk->icsk_ack.pending & ICSK_ACK_PUSHED) &&
+ !icsk->icsk_ack.pingpong)) &&
+ !atomic_read(&sk->sk_rmem_alloc)))
time_to_ack = 1;
}
th->fin = th->psh = 0;
th->check = ~csum_fold(th->check + delta);
- if (skb->ip_summed != CHECKSUM_HW)
+ if (skb->ip_summed != CHECKSUM_PARTIAL)
th->check = csum_fold(csum_partial(skb->h.raw, thlen,
skb->csum));
delta = htonl(oldlen + (skb->tail - skb->h.raw) + skb->data_len);
th->check = ~csum_fold(th->check + delta);
- if (skb->ip_summed != CHECKSUM_HW)
+ if (skb->ip_summed != CHECKSUM_PARTIAL)
th->check = csum_fold(csum_partial(skb->h.raw, thlen,
skb->csum));
tcp_hashinfo.bind_bucket_cachep =
kmem_cache_create("tcp_bind_bucket",
sizeof(struct inet_bind_bucket), 0,
- SLAB_HWCACHE_ALIGN, NULL, NULL);
- if (!tcp_hashinfo.bind_bucket_cachep)
- panic("tcp_init: Cannot alloc tcp_bind_bucket cache.");
+ SLAB_HWCACHE_ALIGN|SLAB_PANIC, NULL, NULL);
/* Size and allocate the main established and bind bucket
* hash tables.
thash_entries,
(num_physpages >= 128 * 1024) ?
13 : 15,
- HASH_HIGHMEM,
+ 0,
&tcp_hashinfo.ehash_size,
NULL,
0);
tcp_hashinfo.ehash_size,
(num_physpages >= 128 * 1024) ?
13 : 15,
- HASH_HIGHMEM,
+ 0,
&tcp_hashinfo.bhash_size,
NULL,
64 * 1024);
sysctl_max_syn_backlog = 128;
}
- sysctl_tcp_mem[0] = 768 << order;
- sysctl_tcp_mem[1] = 1024 << order;
- sysctl_tcp_mem[2] = 1536 << order;
+ /* Allow no more than 3/4 kernel memory (usually less) allocated to TCP */
+ sysctl_tcp_mem[0] = (1536 / sizeof (struct inet_bind_hashbucket)) << order;
+ sysctl_tcp_mem[1] = sysctl_tcp_mem[0] * 4 / 3;
+ sysctl_tcp_mem[2] = sysctl_tcp_mem[0] * 2;
limit = ((unsigned long)sysctl_tcp_mem[1]) << (PAGE_SHIFT - 7);
max_share = min(4UL*1024*1024, limit);