diff options
| -rw-r--r-- | include/linux/sysctl.h | 3 | ||||
| -rw-r--r-- | include/net/dn.h | 4 | ||||
| -rw-r--r-- | net/decnet/af_decnet.c | 25 | ||||
| -rw-r--r-- | net/decnet/sysctl_net_decnet.c | 33 |
4 files changed, 62 insertions, 3 deletions
diff --git a/include/linux/sysctl.h b/include/linux/sysctl.h index 6bc03c911a8..4be34ef8c2f 100644 --- a/include/linux/sysctl.h +++ b/include/linux/sysctl.h @@ -670,6 +670,9 @@ enum { NET_DECNET_DST_GC_INTERVAL = 9, NET_DECNET_CONF = 10, NET_DECNET_NO_FC_MAX_CWND = 11, + NET_DECNET_MEM = 12, + NET_DECNET_RMEM = 13, + NET_DECNET_WMEM = 14, NET_DECNET_DEBUG_LEVEL = 255 }; diff --git a/include/net/dn.h b/include/net/dn.h index c1dbbd22279..a4b6168e1e2 100644 --- a/include/net/dn.h +++ b/include/net/dn.h @@ -234,4 +234,8 @@ extern int decnet_di_count; extern int decnet_dr_count; extern int decnet_no_fc_max_cwnd; +extern int sysctl_decnet_mem[3]; +extern int sysctl_decnet_wmem[3]; +extern int sysctl_decnet_rmem[3]; + #endif /* _NET_DN_H */ diff --git a/net/decnet/af_decnet.c b/net/decnet/af_decnet.c index f89e55f814d..d402e9020c6 100644 --- a/net/decnet/af_decnet.c +++ b/net/decnet/af_decnet.c @@ -153,6 +153,7 @@ static struct proto_ops dn_proto_ops; static DEFINE_RWLOCK(dn_hash_lock); static struct hlist_head dn_sk_hash[DN_SK_HASH_SIZE]; static struct hlist_head dn_wild_sk; +static atomic_t decnet_memory_allocated; static int __dn_setsockopt(struct socket *sock, int level, int optname, char __user *optval, int optlen, int flags); static 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) dst_release(xchg(&sk->sk_dst_cache, NULL)); } +static int dn_memory_pressure; + +static void dn_enter_memory_pressure(void) +{ + if (!dn_memory_pressure) { + dn_memory_pressure = 1; + } +} + static struct proto dn_proto = { - .name = "DECNET", - .owner = THIS_MODULE, - .obj_size = sizeof(struct dn_sock), + .name = "NSP", + .owner = THIS_MODULE, + .enter_memory_pressure = dn_enter_memory_pressure, + .memory_pressure = &dn_memory_pressure, + .memory_allocated = &decnet_memory_allocated, + .sysctl_mem = sysctl_decnet_mem, + .sysctl_wmem = sysctl_decnet_wmem, + .sysctl_rmem = sysctl_decnet_rmem, + .max_header = DN_MAX_NSP_DATA_HEADER + 64, + .obj_size = sizeof(struct dn_sock), }; static 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) sk->sk_family = PF_DECnet; sk->sk_protocol = 0; sk->sk_allocation = gfp; + sk->sk_sndbuf = sysctl_decnet_wmem[1]; + sk->sk_rcvbuf = sysctl_decnet_rmem[1]; /* Initialization of DECnet Session Control Port */ scp = DN_SK(sk); diff --git a/net/decnet/sysctl_net_decnet.c b/net/decnet/sysctl_net_decnet.c index 02bca49cb50..0e9d2c57116 100644 --- a/net/decnet/sysctl_net_decnet.c +++ b/net/decnet/sysctl_net_decnet.c @@ -10,6 +10,7 @@ * * Changes: * Steve Whitehouse - C99 changes and default device handling + * Steve Whitehouse - Memory buffer settings, like the tcp ones * */ #include <linux/config.h> @@ -37,6 +38,11 @@ int decnet_dr_count = 3; int decnet_log_martians = 1; int decnet_no_fc_max_cwnd = NSP_MIN_WINDOW; +/* Reasonable defaults, I hope, based on tcp's defaults */ +int sysctl_decnet_mem[3] = { 768 << 3, 1024 << 3, 1536 << 3 }; +int sysctl_decnet_wmem[3] = { 4 * 1024, 16 * 1024, 128 * 1024 }; +int sysctl_decnet_rmem[3] = { 4 * 1024, 87380, 87380 * 2 }; + #ifdef CONFIG_SYSCTL extern int decnet_dst_gc_interval; static int min_decnet_time_wait[] = { 5 }; @@ -428,6 +434,33 @@ static ctl_table dn_table[] = { .extra1 = &min_decnet_no_fc_max_cwnd, .extra2 = &max_decnet_no_fc_max_cwnd }, + { + .ctl_name = NET_DECNET_MEM, + .procname = "decnet_mem", + .data = &sysctl_decnet_mem, + .maxlen = sizeof(sysctl_decnet_mem), + .mode = 0644, + .proc_handler = &proc_dointvec, + .strategy = &sysctl_intvec, + }, + { + .ctl_name = NET_DECNET_RMEM, + .procname = "decnet_rmem", + .data = &sysctl_decnet_rmem, + .maxlen = sizeof(sysctl_decnet_rmem), + .mode = 0644, + .proc_handler = &proc_dointvec, + .strategy = &sysctl_intvec, + }, + { + .ctl_name = NET_DECNET_WMEM, + .procname = "decnet_wmem", + .data = &sysctl_decnet_wmem, + .maxlen = sizeof(sysctl_decnet_wmem), + .mode = 0644, + .proc_handler = &proc_dointvec, + .strategy = &sysctl_intvec, + }, { .ctl_name = NET_DECNET_DEBUG_LEVEL, .procname = "debug", |