sctp: create helper function to enable|disable sackdelay

add sctp_spp_sackdelay_{enable|disable} helper function for
avoiding code duplication.

Signed-off-by: Wang Weidong <wangweidong1@huawei.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 19 insertions, 18 deletions

diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index 6b20a15678f6..fd7337ad4c24 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -2527,6 +2527,16 @@ static int sctp_setsockopt_peer_addr_params(struct sock *sk,
         return 0;
 }
 
+static inline __u32 sctp_spp_sackdelay_enable(__u32 param_flags)
+{
+        return (param_flags & ~SPP_SACKDELAY) | SPP_SACKDELAY_ENABLE;
+}
+
+static inline __u32 sctp_spp_sackdelay_disable(__u32 param_flags)
+{
+        return (param_flags & ~SPP_SACKDELAY) | SPP_SACKDELAY_DISABLE;
+}
+
 /*
  * 7.1.23.  Get or set delayed ack timer (SCTP_DELAYED_SACK)
  *
@@ -2610,37 +2620,31 @@ static int sctp_setsockopt_delayed_ack(struct sock *sk,
                         asoc->sackdelay =
                                 msecs_to_jiffies(params.sack_delay);
                         asoc->param_flags =
-                                (asoc->param_flags & ~SPP_SACKDELAY) |
-                                SPP_SACKDELAY_ENABLE;
+                                sctp_spp_sackdelay_enable(asoc->param_flags);
                 } else {
                         sp->sackdelay = params.sack_delay;
                         sp->param_flags =
-                                (sp->param_flags & ~SPP_SACKDELAY) |
-                                SPP_SACKDELAY_ENABLE;
+                                sctp_spp_sackdelay_enable(sp->param_flags);
                 }
         }
 
         if (params.sack_freq == 1) {
                 if (asoc) {
                         asoc->param_flags =
-                                (asoc->param_flags & ~SPP_SACKDELAY) |
-                                SPP_SACKDELAY_DISABLE;
+                                sctp_spp_sackdelay_disable(asoc->param_flags);
                 } else {
                         sp->param_flags =
-                                (sp->param_flags & ~SPP_SACKDELAY) |
-                                SPP_SACKDELAY_DISABLE;
+                                sctp_spp_sackdelay_disable(sp->param_flags);
                 }
         } else if (params.sack_freq > 1) {
                 if (asoc) {
                         asoc->sackfreq = params.sack_freq;
                         asoc->param_flags =
-                                (asoc->param_flags & ~SPP_SACKDELAY) |
-                                SPP_SACKDELAY_ENABLE;
+                                sctp_spp_sackdelay_enable(asoc->param_flags);
                 } else {
                         sp->sackfreq = params.sack_freq;
                         sp->param_flags =
-                                (sp->param_flags & ~SPP_SACKDELAY) |
-                                SPP_SACKDELAY_ENABLE;
+                                sctp_spp_sackdelay_enable(sp->param_flags);
                 }
         }
 
@@ -2652,18 +2656,15 @@ static int sctp_setsockopt_delayed_ack(struct sock *sk,
                                 trans->sackdelay =
                                         msecs_to_jiffies(params.sack_delay);
                                 trans->param_flags =
-                                        (trans->param_flags & ~SPP_SACKDELAY) |
-                                        SPP_SACKDELAY_ENABLE;
+                                        sctp_spp_sackdelay_enable(trans->param_flags);
                         }
                         if (params.sack_freq == 1) {
                                 trans->param_flags =
-                                        (trans->param_flags & ~SPP_SACKDELAY) |
-                                        SPP_SACKDELAY_DISABLE;
+                                        sctp_spp_sackdelay_disable(trans->param_flags);
                         } else if (params.sack_freq > 1) {
                                 trans->sackfreq = params.sack_freq;
                                 trans->param_flags =
-                                        (trans->param_flags & ~SPP_SACKDELAY) |
-                                        SPP_SACKDELAY_ENABLE;
+                                        sctp_spp_sackdelay_enable(trans->param_flags);
                         }
                 }
         }