summaryrefslogtreecommitdiffstats
path: root/net/decnet
diff options
context:
space:
mode:
Diffstat (limited to 'net/decnet')
-rw-r--r--net/decnet/af_decnet.c31
-rw-r--r--net/decnet/dn_neigh.c13
-rw-r--r--net/decnet/dn_nsp_in.c17
-rw-r--r--net/decnet/sysctl_net_decnet.c33
4 files changed, 67 insertions, 27 deletions
diff --git a/net/decnet/af_decnet.c b/net/decnet/af_decnet.c
index f89e55f814d..78ec5344be8 100644
--- a/net/decnet/af_decnet.c
+++ b/net/decnet/af_decnet.c
@@ -149,10 +149,11 @@ static void dn_keepalive(struct sock *sk);
#define DN_SK_HASH_MASK (DN_SK_HASH_SIZE - 1)
-static struct proto_ops dn_proto_ops;
+static const 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);
@@ -1233,7 +1252,7 @@ static int dn_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
break;
default:
- err = dev_ioctl(cmd, (void __user *)arg);
+ err = -ENOIOCTLCMD;
break;
}
@@ -2323,7 +2342,7 @@ static struct net_proto_family dn_family_ops = {
.owner = THIS_MODULE,
};
-static struct proto_ops dn_proto_ops = {
+static const struct proto_ops dn_proto_ops = {
.family = AF_DECnet,
.owner = THIS_MODULE,
.release = dn_release,
diff --git a/net/decnet/dn_neigh.c b/net/decnet/dn_neigh.c
index 8d0cc3cf3e4..33ab256cfd4 100644
--- a/net/decnet/dn_neigh.c
+++ b/net/decnet/dn_neigh.c
@@ -408,11 +408,14 @@ int dn_neigh_router_hello(struct sk_buff *skb)
}
}
- if (!dn_db->router) {
- dn_db->router = neigh_clone(neigh);
- } else {
- if (msg->priority > ((struct dn_neigh *)dn_db->router)->priority)
- neigh_release(xchg(&dn_db->router, neigh_clone(neigh)));
+ /* Only use routers in our area */
+ if ((dn_ntohs(src)>>10) == dn_ntohs((decnet_address)>>10)) {
+ if (!dn_db->router) {
+ dn_db->router = neigh_clone(neigh);
+ } else {
+ if (msg->priority > ((struct dn_neigh *)dn_db->router)->priority)
+ neigh_release(xchg(&dn_db->router, neigh_clone(neigh)));
+ }
}
write_unlock(&neigh->lock);
neigh_release(neigh);
diff --git a/net/decnet/dn_nsp_in.c b/net/decnet/dn_nsp_in.c
index 369f25b60f3..44bda85e678 100644
--- a/net/decnet/dn_nsp_in.c
+++ b/net/decnet/dn_nsp_in.c
@@ -793,7 +793,6 @@ static int dn_nsp_rx_packet(struct sk_buff *skb)
got_it:
if (sk != NULL) {
struct dn_scp *scp = DN_SK(sk);
- int ret;
/* Reset backoff */
scp->nsp_rxtshift = 0;
@@ -807,21 +806,7 @@ got_it:
goto free_out;
}
- bh_lock_sock(sk);
- ret = NET_RX_SUCCESS;
- if (decnet_debug_level & 8)
- printk(KERN_DEBUG "NSP: 0x%02x 0x%02x 0x%04x 0x%04x %d\n",
- (int)cb->rt_flags, (int)cb->nsp_flags,
- (int)cb->src_port, (int)cb->dst_port,
- !!sock_owned_by_user(sk));
- if (!sock_owned_by_user(sk))
- ret = dn_nsp_backlog_rcv(sk, skb);
- else
- sk_add_backlog(sk, skb);
- bh_unlock_sock(sk);
- sock_put(sk);
-
- return ret;
+ return sk_receive_skb(sk, skb);
}
return dn_nsp_no_socket(skb, reason);
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",
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-02-22 00:51:54 +0000