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authorSteven Whitehouse <steve@chygwyn.com>2005-12-05 16:42:06 -0500
committerDavid S. Miller <davem@davemloft.net>2005-12-05 16:42:06 -0500
commit1f12bcc9d1840fd26bf577065214f1ebeb2609ba (patch)
tree4fb87a594d00671e2bc31998d94b3d470e9062d3 /net/decnet/af_decnet.c
parentdab9630fb3d206f49658066a3ecf80ea120364db (diff)
[DECNET]: add memory buffer settings
The patch (originally from Steve) simply adds memory buffer settings to DECnet similar to those in TCP. Signed-off-by: Patrick Caulfield <patrick@tykepenguin.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/decnet/af_decnet.c')
-rw-r--r--net/decnet/af_decnet.c25
1 files changed, 22 insertions, 3 deletions
diff --git a/net/decnet/af_decnet.c b/net/decnet/af_decnet.c
index f89e55f814d9..d402e9020c68 100644
--- a/net/decnet/af_decnet.c
+++ b/net/decnet/af_decnet.c
@@ -153,6 +153,7 @@ static struct proto_ops dn_proto_ops;
153static DEFINE_RWLOCK(dn_hash_lock); 153static DEFINE_RWLOCK(dn_hash_lock);
154static struct hlist_head dn_sk_hash[DN_SK_HASH_SIZE]; 154static struct hlist_head dn_sk_hash[DN_SK_HASH_SIZE];
155static struct hlist_head dn_wild_sk; 155static struct hlist_head dn_wild_sk;
156static atomic_t decnet_memory_allocated;
156 157
157static int __dn_setsockopt(struct socket *sock, int level, int optname, char __user *optval, int optlen, int flags); 158static int __dn_setsockopt(struct socket *sock, int level, int optname, char __user *optval, int optlen, int flags);
158static int __dn_getsockopt(struct socket *sock, int level, int optname, char __user *optval, int __user *optlen, int flags); 159static int __dn_getsockopt(struct socket *sock, int level, int optname, char __user *optval, int __user *optlen, int flags);
@@ -446,10 +447,26 @@ static void dn_destruct(struct sock *sk)
446 dst_release(xchg(&sk->sk_dst_cache, NULL)); 447 dst_release(xchg(&sk->sk_dst_cache, NULL));
447} 448}
448 449
450static int dn_memory_pressure;
451
452static void dn_enter_memory_pressure(void)
453{
454 if (!dn_memory_pressure) {
455 dn_memory_pressure = 1;
456 }
457}
458
449static struct proto dn_proto = { 459static struct proto dn_proto = {
450 .name = "DECNET", 460 .name = "NSP",
451 .owner = THIS_MODULE, 461 .owner = THIS_MODULE,
452 .obj_size = sizeof(struct dn_sock), 462 .enter_memory_pressure = dn_enter_memory_pressure,
463 .memory_pressure = &dn_memory_pressure,
464 .memory_allocated = &decnet_memory_allocated,
465 .sysctl_mem = sysctl_decnet_mem,
466 .sysctl_wmem = sysctl_decnet_wmem,
467 .sysctl_rmem = sysctl_decnet_rmem,
468 .max_header = DN_MAX_NSP_DATA_HEADER + 64,
469 .obj_size = sizeof(struct dn_sock),
453}; 470};
454 471
455static struct sock *dn_alloc_sock(struct socket *sock, gfp_t gfp) 472static struct sock *dn_alloc_sock(struct socket *sock, gfp_t gfp)
@@ -470,6 +487,8 @@ static struct sock *dn_alloc_sock(struct socket *sock, gfp_t gfp)
470 sk->sk_family = PF_DECnet; 487 sk->sk_family = PF_DECnet;
471 sk->sk_protocol = 0; 488 sk->sk_protocol = 0;
472 sk->sk_allocation = gfp; 489 sk->sk_allocation = gfp;
490 sk->sk_sndbuf = sysctl_decnet_wmem[1];
491 sk->sk_rcvbuf = sysctl_decnet_rmem[1];
473 492
474 /* Initialization of DECnet Session Control Port */ 493 /* Initialization of DECnet Session Control Port */
475 scp = DN_SK(sk); 494 scp = DN_SK(sk);