osf: add parse and build userdata interface

Add support for meta userdata area.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Florian Westphal <fw@strlen.de>

diff --git a/src/expression.c b/src/expression.c
index 191bc2be104b90d8bd8bfaa5f03e457e6fd2f48d..7d198222c90b7d8e3688b767f7f59fbfd2291c47 100644 (file)
--- a/src/expression.c
+++ b/src/expression.c
@@ -1230,6 +1230,7 @@ const struct expr_ops *expr_ops_by_type(enum expr_types etype)
        case EXPR_EXTHDR: return &exthdr_expr_ops;
        case EXPR_META: return &meta_expr_ops;
        case EXPR_SOCKET: return &socket_expr_ops;
+       case EXPR_OSF: return &osf_expr_ops;
        default:
                break;
        }

diff --git a/src/osf.c b/src/osf.c
index f0c22393cd85061aeb5e7d178f658623730da73e..cb58315d714d10119e65c4c80de2854ada53bf57 100644 (file)
--- a/src/osf.c
+++ b/src/osf.c
@@ -37,6 +37,17 @@ static bool osf_expr_cmp(const struct expr *e1, const struct expr *e2)
               (e1->osf.flags == e2->osf.flags);
 }
 
+static int osf_expr_build_udata(struct nftnl_udata_buf *udbuf,
+                                const struct expr *expr)
+{
+       return 0;
+}
+
+static struct expr *osf_expr_parse_udata(const struct nftnl_udata *attr)
+{
+       return osf_expr_alloc(&internal_location, 0, 0);
+}
+
 const struct expr_ops osf_expr_ops = {
        .type           = EXPR_OSF,
        .name           = "osf",
@@ -44,6 +55,8 @@ const struct expr_ops osf_expr_ops = {
        .clone          = osf_expr_clone,
        .cmp            = osf_expr_cmp,
        .json           = osf_expr_json,
+       .parse_udata    = osf_expr_parse_udata,
+       .build_udata    = osf_expr_build_udata,
 };
 
 struct expr *osf_expr_alloc(const struct location *loc, const uint8_t ttl,