summaryrefslogtreecommitdiff
path: root/net/sctp/protocol.c
diff options
context:
space:
mode:
Diffstat (limited to 'net/sctp/protocol.c')
-rw-r--r--net/sctp/protocol.c35
1 files changed, 30 insertions, 5 deletions
diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c
index 9258dfe784ae..a6e0818bcff5 100644
--- a/net/sctp/protocol.c
+++ b/net/sctp/protocol.c
@@ -52,6 +52,8 @@
#include <linux/inetdevice.h>
#include <linux/seq_file.h>
#include <linux/bootmem.h>
+#include <linux/highmem.h>
+#include <linux/swap.h>
#include <net/net_namespace.h>
#include <net/protocol.h>
#include <net/ip.h>
@@ -64,9 +66,12 @@
/* Global data structures. */
struct sctp_globals sctp_globals __read_mostly;
-struct proc_dir_entry *proc_net_sctp;
DEFINE_SNMP_STAT(struct sctp_mib, sctp_statistics) __read_mostly;
+#ifdef CONFIG_PROC_FS
+struct proc_dir_entry *proc_net_sctp;
+#endif
+
struct idr sctp_assocs_id;
DEFINE_SPINLOCK(sctp_assocs_id_lock);
@@ -97,6 +102,7 @@ struct sock *sctp_get_ctl_sock(void)
/* Set up the proc fs entry for the SCTP protocol. */
static __init int sctp_proc_init(void)
{
+#ifdef CONFIG_PROC_FS
if (!proc_net_sctp) {
struct proc_dir_entry *ent;
ent = proc_mkdir("sctp", init_net.proc_net);
@@ -113,9 +119,13 @@ static __init int sctp_proc_init(void)
goto out_eps_proc_init;
if (sctp_assocs_proc_init())
goto out_assocs_proc_init;
+ if (sctp_remaddr_proc_init())
+ goto out_remaddr_proc_init;
return 0;
+out_remaddr_proc_init:
+ sctp_assocs_proc_exit();
out_assocs_proc_init:
sctp_eps_proc_exit();
out_eps_proc_init:
@@ -127,6 +137,9 @@ out_snmp_proc_init:
}
out_nomem:
return -ENOMEM;
+#else
+ return 0;
+#endif /* CONFIG_PROC_FS */
}
/* Clean up the proc fs entry for the SCTP protocol.
@@ -135,14 +148,17 @@ out_nomem:
*/
static void sctp_proc_exit(void)
{
+#ifdef CONFIG_PROC_FS
sctp_snmp_proc_exit();
sctp_eps_proc_exit();
sctp_assocs_proc_exit();
+ sctp_remaddr_proc_exit();
if (proc_net_sctp) {
proc_net_sctp = NULL;
remove_proc_entry("sctp", init_net.proc_net);
}
+#endif
}
/* Private helper to extract ipv4 address and stash them in
@@ -367,6 +383,10 @@ static int sctp_v4_addr_valid(union sctp_addr *addr,
struct sctp_sock *sp,
const struct sk_buff *skb)
{
+ /* IPv4 addresses not allowed */
+ if (sp && ipv6_only_sock(sctp_opt2sk(sp)))
+ return 0;
+
/* Is this a non-unicast address or a unusable SCTP address? */
if (IS_IPV4_UNUSABLE_ADDRESS(addr->v4.sin_addr.s_addr))
return 0;
@@ -390,6 +410,9 @@ static int sctp_v4_available(union sctp_addr *addr, struct sctp_sock *sp)
!sysctl_ip_nonlocal_bind)
return 0;
+ if (ipv6_only_sock(sctp_opt2sk(sp)))
+ return 0;
+
return 1;
}
@@ -645,7 +668,7 @@ static int sctp_inetaddr_event(struct notifier_block *this, unsigned long ev,
struct sctp_sockaddr_entry *temp;
int found = 0;
- if (dev_net(ifa->ifa_dev->dev) != &init_net)
+ if (!net_eq(dev_net(ifa->ifa_dev->dev), &init_net))
return NOTIFY_DONE;
switch (ev) {
@@ -1059,6 +1082,7 @@ SCTP_STATIC __init int sctp_init(void)
int status = -EINVAL;
unsigned long goal;
unsigned long limit;
+ unsigned long nr_pages;
int max_share;
int order;
@@ -1154,8 +1178,9 @@ SCTP_STATIC __init int sctp_init(void)
* Note this initalizes the data in sctpv6_prot too
* Unabashedly stolen from tcp_init
*/
- limit = min(num_physpages, 1UL<<(28-PAGE_SHIFT)) >> (20-PAGE_SHIFT);
- limit = (limit * (num_physpages >> (20-PAGE_SHIFT))) >> (PAGE_SHIFT-11);
+ nr_pages = totalram_pages - totalhigh_pages;
+ limit = min(nr_pages, 1UL<<(28-PAGE_SHIFT)) >> (20-PAGE_SHIFT);
+ limit = (limit * (nr_pages >> (20-PAGE_SHIFT))) >> (PAGE_SHIFT-11);
limit = max(limit, 128UL);
sysctl_sctp_mem[0] = limit / 4 * 3;
sysctl_sctp_mem[1] = limit;
@@ -1165,7 +1190,7 @@ SCTP_STATIC __init int sctp_init(void)
limit = (sysctl_sctp_mem[1]) << (PAGE_SHIFT - 7);
max_share = min(4UL*1024*1024, limit);
- sysctl_sctp_rmem[0] = PAGE_SIZE; /* give each asoc 1 page min */
+ sysctl_sctp_rmem[0] = SK_MEM_QUANTUM; /* give each asoc 1 page min */
sysctl_sctp_rmem[1] = (1500 *(sizeof(struct sk_buff) + 1));
sysctl_sctp_rmem[2] = max(sysctl_sctp_rmem[1], max_share);