[PATCH net-next] lwt: Remove unused len field

[Thomas Graf]

The field is initialized by ILA and MPLS but never used. Remove it.

Signed-off-by: Thomas Graf <tg...@suug.ch>
---
 include/net/lwtunnel.h   | 3 +--
 net/ipv6/ila/ila_lwt.c   | 4 +---
 net/mpls/mpls_iptunnel.c | 5 +----
 3 files changed, 3 insertions(+), 9 deletions(-)

diff --git a/include/net/lwtunnel.h b/include/net/lwtunnel.h
index 67d235f..82e76fe 100644
--- a/include/net/lwtunnel.h
+++ b/include/net/lwtunnel.h
@@ -24,11 +24,10 @@ enum {
 struct lwtunnel_state {
        __u16           type;
        __u16           flags;
+       __u16           headroom;
        atomic_t        refcnt;
        int             (*orig_output)(struct net *net, struct sock *sk, struct 
sk_buff *skb);
        int             (*orig_input)(struct sk_buff *);
-       int             len;
-       __u16           headroom;
        struct          rcu_head rcu;
        __u8            data[0];
 };
diff --git a/net/ipv6/ila/ila_lwt.c b/net/ipv6/ila/ila_lwt.c
index c7a39d0..a7bc54a 100644
--- a/net/ipv6/ila/ila_lwt.c
+++ b/net/ipv6/ila/ila_lwt.c
@@ -122,7 +122,6 @@ static int ila_build_state(struct net_device *dev, struct 
nlattr *nla,
        struct ila_lwt *ilwt;
        struct ila_params *p;
        struct nlattr *tb[ILA_ATTR_MAX + 1];
-       size_t encap_len = sizeof(*ilwt);
        struct lwtunnel_state *newts;
        const struct fib6_config *cfg6 = cfg;
        struct ila_addr *iaddr;
@@ -155,7 +154,7 @@ static int ila_build_state(struct net_device *dev, struct 
nlattr *nla,
        if (!tb[ILA_ATTR_LOCATOR])
                return -EINVAL;
 
-       newts = lwtunnel_state_alloc(encap_len);
+       newts = lwtunnel_state_alloc(sizeof(*ilwt));
        if (!newts)
                return -ENOMEM;
 
@@ -166,7 +165,6 @@ static int ila_build_state(struct net_device *dev, struct 
nlattr *nla,
                return ret;
        }
 
-       newts->len = encap_len;
        p = ila_params_lwtunnel(newts);
 
        p->locator.v64 = (__force __be64)nla_get_u64(tb[ILA_ATTR_LOCATOR]);
diff --git a/net/mpls/mpls_iptunnel.c b/net/mpls/mpls_iptunnel.c
index cf52cf3..2f7ccd9 100644
--- a/net/mpls/mpls_iptunnel.c
+++ b/net/mpls/mpls_iptunnel.c
@@ -133,7 +133,6 @@ static int mpls_build_state(struct net_device *dev, struct 
nlattr *nla,
        struct mpls_iptunnel_encap *tun_encap_info;
        struct nlattr *tb[MPLS_IPTUNNEL_MAX + 1];
        struct lwtunnel_state *newts;
-       int tun_encap_info_len;
        int ret;
 
        ret = nla_parse_nested(tb, MPLS_IPTUNNEL_MAX, nla,
@@ -144,13 +143,11 @@ static int mpls_build_state(struct net_device *dev, 
struct nlattr *nla,
        if (!tb[MPLS_IPTUNNEL_DST])
                return -EINVAL;
 
-       tun_encap_info_len = sizeof(*tun_encap_info);
 
-       newts = lwtunnel_state_alloc(tun_encap_info_len);
+       newts = lwtunnel_state_alloc(sizeof(*tun_encap_info));
        if (!newts)
                return -ENOMEM;
 
-       newts->len = tun_encap_info_len;
        tun_encap_info = mpls_lwtunnel_encap(newts);
        ret = nla_get_labels(tb[MPLS_IPTUNNEL_DST], MAX_NEW_LABELS,
                             &tun_encap_info->labels, tun_encap_info->label);
-- 
2.7.4