src: add support for DCCP 64-bits sequence number tracking

From: Pablo Neira Ayuso <pablo@netfilter.org>

This patch adds the support for the DCCP sequence number tracking
that is included in the upcoming Linux kernel 2.6.31.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

1 files changed, 29 insertions, 0 deletions

diff --git a/src/conntrack/api.c b/src/conntrack/api.c
index 0639b5f..56a3a8a 100644
--- a/src/conntrack/api.c
+++ b/src/conntrack/api.c
@@ -341,6 +341,19 @@ void nfct_set_attr_u32(struct nf_conntrack *ct,
 }
 
 /**
+ * nfct_set_attr_u64 - set the value of a certain conntrack attribute
+ * @ct: pointer to a valid conntrack
+ * @type: attribute type
+ * @value: unsigned 64 bits attribute value
+ */
+void nfct_set_attr_u64(struct nf_conntrack *ct,
+		       const enum nf_conntrack_attr type, 
+		       u_int64_t value)
+{
+	nfct_set_attr(ct, type, &value);
+}
+
+/**
  * nfct_get_attr - get a conntrack attribute
  * ct: pointer to a valid conntrack
  * @type: attribute type
@@ -417,6 +430,22 @@ u_int32_t nfct_get_attr_u32(const struct nf_conntrack *ct,
 }
 
 /**
+ * nfct_get_attr_u64 - get attribute of unsigned 32-bits long
+ * @ct: pointer to a valid conntrack
+ * @type: attribute type
+ *
+ * Returns the value of the requested attribute, if the attribute is not 
+ * set, 0 is returned. In order to check if the attribute is set or not,
+ * use nfct_attr_is_set.
+ */
+u_int64_t nfct_get_attr_u64(const struct nf_conntrack *ct,
+			    const enum nf_conntrack_attr type)
+{
+	const u_int64_t *ret = nfct_get_attr(ct, type);
+	return ret == NULL ? 0 : *ret;
+}
+
+/**
  * nfct_attr_is_set - check if a certain attribute is set
  * @ct: pointer to a valid conntrack object
  * @type: attribute type