1 files changed, 29 insertions, 4 deletions

diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c
index 9258dfe784ae..ed9acffe8105 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;
 }
 
@@ -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);