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Diffstat (limited to 'net/sctp/sm_statefuns.c')
-rw-r--r--net/sctp/sm_statefuns.c66
1 files changed, 33 insertions, 33 deletions
diff --git a/net/sctp/sm_statefuns.c b/net/sctp/sm_statefuns.c
index 24b2cd55563..4b4eb7c96bb 100644
--- a/net/sctp/sm_statefuns.c
+++ b/net/sctp/sm_statefuns.c
@@ -50,6 +50,8 @@
* be incorporated into the next SCTP release.
*/
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/ip.h>
@@ -1138,18 +1140,16 @@ sctp_disposition_t sctp_sf_backbeat_8_3(const struct sctp_endpoint *ep,
if (unlikely(!link)) {
if (from_addr.sa.sa_family == AF_INET6) {
if (net_ratelimit())
- printk(KERN_WARNING
- "%s association %p could not find address %pI6\n",
- __func__,
- asoc,
- &from_addr.v6.sin6_addr);
+ pr_warn("%s association %p could not find address %pI6\n",
+ __func__,
+ asoc,
+ &from_addr.v6.sin6_addr);
} else {
if (net_ratelimit())
- printk(KERN_WARNING
- "%s association %p could not find address %pI4\n",
- __func__,
- asoc,
- &from_addr.v4.sin_addr.s_addr);
+ pr_warn("%s association %p could not find address %pI4\n",
+ __func__,
+ asoc,
+ &from_addr.v4.sin_addr.s_addr);
}
return SCTP_DISPOSITION_DISCARD;
}
@@ -1232,6 +1232,18 @@ out:
return 0;
}
+static bool list_has_sctp_addr(const struct list_head *list,
+ union sctp_addr *ipaddr)
+{
+ struct sctp_transport *addr;
+
+ list_for_each_entry(addr, list, transports) {
+ if (sctp_cmp_addr_exact(ipaddr, &addr->ipaddr))
+ return true;
+ }
+
+ return false;
+}
/* A restart is occurring, check to make sure no new addresses
* are being added as we may be under a takeover attack.
*/
@@ -1240,10 +1252,10 @@ static int sctp_sf_check_restart_addrs(const struct sctp_association *new_asoc,
struct sctp_chunk *init,
sctp_cmd_seq_t *commands)
{
- struct sctp_transport *new_addr, *addr;
- int found;
+ struct sctp_transport *new_addr;
+ int ret = 1;
- /* Implementor's Guide - Sectin 5.2.2
+ /* Implementor's Guide - Section 5.2.2
* ...
* Before responding the endpoint MUST check to see if the
* unexpected INIT adds new addresses to the association. If new
@@ -1254,31 +1266,19 @@ static int sctp_sf_check_restart_addrs(const struct sctp_association *new_asoc,
/* Search through all current addresses and make sure
* we aren't adding any new ones.
*/
- new_addr = NULL;
- found = 0;
-
list_for_each_entry(new_addr, &new_asoc->peer.transport_addr_list,
- transports) {
- found = 0;
- list_for_each_entry(addr, &asoc->peer.transport_addr_list,
- transports) {
- if (sctp_cmp_addr_exact(&new_addr->ipaddr,
- &addr->ipaddr)) {
- found = 1;
- break;
- }
- }
- if (!found)
+ transports) {
+ if (!list_has_sctp_addr(&asoc->peer.transport_addr_list,
+ &new_addr->ipaddr)) {
+ sctp_sf_send_restart_abort(&new_addr->ipaddr, init,
+ commands);
+ ret = 0;
break;
- }
-
- /* If a new address was added, ABORT the sender. */
- if (!found && new_addr) {
- sctp_sf_send_restart_abort(&new_addr->ipaddr, init, commands);
+ }
}
/* Return success if all addresses were found. */
- return found;
+ return ret;
}
/* Populate the verification/tie tags based on overlapping INIT