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path: root/net/ipv6/ila/ila_lwt.c
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Diffstat (limited to 'net/ipv6/ila/ila_lwt.c')
-rw-r--r--net/ipv6/ila/ila_lwt.c39
1 files changed, 36 insertions, 3 deletions
diff --git a/net/ipv6/ila/ila_lwt.c b/net/ipv6/ila/ila_lwt.c
index 4b97d573f223..3d56a2fb6f86 100644
--- a/net/ipv6/ila/ila_lwt.c
+++ b/net/ipv6/ila/ila_lwt.c
@@ -20,6 +20,7 @@ struct ila_lwt {
struct ila_params p;
struct dst_cache dst_cache;
u32 connected : 1;
+ u32 lwt_output : 1;
};
static inline struct ila_lwt *ila_lwt_lwtunnel(
@@ -45,8 +46,10 @@ static int ila_output(struct net *net, struct sock *sk, struct sk_buff *skb)
if (skb->protocol != htons(ETH_P_IPV6))
goto drop;
- ila_update_ipv6_locator(skb, ila_params_lwtunnel(orig_dst->lwtstate),
- true);
+ if (ilwt->lwt_output)
+ ila_update_ipv6_locator(skb,
+ ila_params_lwtunnel(orig_dst->lwtstate),
+ true);
if (rt->rt6i_flags & (RTF_GATEWAY | RTF_CACHE)) {
/* Already have a next hop address in route, no need for
@@ -98,11 +101,15 @@ drop:
static int ila_input(struct sk_buff *skb)
{
struct dst_entry *dst = skb_dst(skb);
+ struct ila_lwt *ilwt = ila_lwt_lwtunnel(dst->lwtstate);
if (skb->protocol != htons(ETH_P_IPV6))
goto drop;
- ila_update_ipv6_locator(skb, ila_params_lwtunnel(dst->lwtstate), false);
+ if (!ilwt->lwt_output)
+ ila_update_ipv6_locator(skb,
+ ila_params_lwtunnel(dst->lwtstate),
+ false);
return dst->lwtstate->orig_input(skb);
@@ -115,6 +122,7 @@ static const struct nla_policy ila_nl_policy[ILA_ATTR_MAX + 1] = {
[ILA_ATTR_LOCATOR] = { .type = NLA_U64, },
[ILA_ATTR_CSUM_MODE] = { .type = NLA_U8, },
[ILA_ATTR_IDENT_TYPE] = { .type = NLA_U8, },
+ [ILA_ATTR_HOOK_TYPE] = { .type = NLA_U8, },
};
static int ila_build_state(struct nlattr *nla,
@@ -129,7 +137,9 @@ static int ila_build_state(struct nlattr *nla,
const struct fib6_config *cfg6 = cfg;
struct ila_addr *iaddr;
u8 ident_type = ILA_ATYPE_USE_FORMAT;
+ u8 hook_type = ILA_HOOK_ROUTE_OUTPUT;
u8 csum_mode = ILA_CSUM_NO_ACTION;
+ bool lwt_output = true;
u8 eff_ident_type;
int ret;
@@ -180,6 +190,20 @@ static int ila_build_state(struct nlattr *nla,
return -EINVAL;
}
+ if (tb[ILA_ATTR_HOOK_TYPE])
+ hook_type = nla_get_u8(tb[ILA_ATTR_HOOK_TYPE]);
+
+ switch (hook_type) {
+ case ILA_HOOK_ROUTE_OUTPUT:
+ lwt_output = true;
+ break;
+ case ILA_HOOK_ROUTE_INPUT:
+ lwt_output = false;
+ break;
+ default:
+ return -EINVAL;
+ }
+
if (tb[ILA_ATTR_CSUM_MODE])
csum_mode = nla_get_u8(tb[ILA_ATTR_CSUM_MODE]);
@@ -202,6 +226,8 @@ static int ila_build_state(struct nlattr *nla,
return ret;
}
+ ilwt->lwt_output = !!lwt_output;
+
p = ila_params_lwtunnel(newts);
p->csum_mode = csum_mode;
@@ -236,6 +262,7 @@ static int ila_fill_encap_info(struct sk_buff *skb,
struct lwtunnel_state *lwtstate)
{
struct ila_params *p = ila_params_lwtunnel(lwtstate);
+ struct ila_lwt *ilwt = ila_lwt_lwtunnel(lwtstate);
if (nla_put_u64_64bit(skb, ILA_ATTR_LOCATOR, (__force u64)p->locator.v64,
ILA_ATTR_PAD))
@@ -247,6 +274,11 @@ static int ila_fill_encap_info(struct sk_buff *skb,
if (nla_put_u8(skb, ILA_ATTR_IDENT_TYPE, (__force u8)p->ident_type))
goto nla_put_failure;
+ if (nla_put_u8(skb, ILA_ATTR_HOOK_TYPE,
+ ilwt->lwt_output ? ILA_HOOK_ROUTE_OUTPUT :
+ ILA_HOOK_ROUTE_INPUT))
+ goto nla_put_failure;
+
return 0;
nla_put_failure:
@@ -258,6 +290,7 @@ static int ila_encap_nlsize(struct lwtunnel_state *lwtstate)
return nla_total_size_64bit(sizeof(u64)) + /* ILA_ATTR_LOCATOR */
nla_total_size(sizeof(u8)) + /* ILA_ATTR_CSUM_MODE */
nla_total_size(sizeof(u8)) + /* ILA_ATTR_IDENT_TYPE */
+ nla_total_size(sizeof(u8)) + /* ILA_ATTR_HOOK_TYPE */
0;
}