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authorGuillaume Nault <g.nault@alphalink.fr>2018-08-03 12:38:34 +0200
committerDavid S. Miller <davem@davemloft.net>2018-08-03 10:03:57 -0700
commit1f5cd2a0107d4ed95cbd9118e6a5f7ccd3d4d12a (patch)
tree1ee06be60cafbb3e7c7df779677842c976d5716d /net/l2tp/l2tp_ppp.c
parentf3184645cb0409d4ab0e63d65a0adcb565f55df4 (diff)
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l2tp: define l2tp_tunnel_dst_mtu()
Consolidate retrieval of tunnel's socket mtu in order to simplify l2tp_eth and l2tp_ppp a bit. Signed-off-by: Guillaume Nault <g.nault@alphalink.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/l2tp/l2tp_ppp.c')
-rw-r--r--net/l2tp/l2tp_ppp.c15
1 files changed, 4 insertions, 11 deletions
diff --git a/net/l2tp/l2tp_ppp.c b/net/l2tp/l2tp_ppp.c
index 44cac66284a5..1c6da02f976a 100644
--- a/net/l2tp/l2tp_ppp.c
+++ b/net/l2tp/l2tp_ppp.c
@@ -93,7 +93,6 @@
#include <linux/nsproxy.h>
#include <net/net_namespace.h>
#include <net/netns/generic.h>
-#include <net/dst.h>
#include <net/ip.h>
#include <net/udp.h>
#include <net/xfrm.h>
@@ -554,7 +553,7 @@ static void pppol2tp_show(struct seq_file *m, void *arg)
static void pppol2tp_session_init(struct l2tp_session *session)
{
struct pppol2tp_session *ps;
- struct dst_entry *dst;
+ u32 mtu;
session->recv_skb = pppol2tp_recv;
#if IS_ENABLED(CONFIG_L2TP_DEBUGFS)
@@ -566,15 +565,9 @@ static void pppol2tp_session_init(struct l2tp_session *session)
ps->owner = current->pid;
/* If PMTU discovery was enabled, use the MTU that was discovered */
- dst = sk_dst_get(session->tunnel->sock);
- if (dst) {
- u32 pmtu = dst_mtu(dst);
-
- if (pmtu)
- session->mtu = pmtu - PPPOL2TP_HEADER_OVERHEAD;
-
- dst_release(dst);
- }
+ mtu = l2tp_tunnel_dst_mtu(session->tunnel);
+ if (mtu)
+ session->mtu = mtu - PPPOL2TP_HEADER_OVERHEAD;
}
struct l2tp_connect_info {