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authorJamie Bainbridge <jamie.bainbridge@gmail.com>2016-03-10 16:12:05 +1000
committerJiri Pirko <jiri@mellanox.com>2016-03-10 08:38:01 +0100
commitcb1ab5fc8b993f23924385ebee42d52ff45e4e8a (patch)
tree1122cbdbf48523ab2fc139023d3e1a5b96e4192c /libndp/libndp.c
parent93d9252427e459d0a4b9434c3ef62685ee5d2d45 (diff)
downloadlibndp-cb1ab5fc8b993f23924385ebee42d52ff45e4e8a.tar.gz
libndp: add option flags to send messages
Within NA and RA message types, there are flags such as Solicited and Override (RFC-4861 Section 4). RA flags are currently implemented but not NA flags, so add remaining NA flag getters/setters. Set Solicited/Override flag on NA when appropriate, add a flags interface to the send API, and implement ability to send Unsolicited NA. Signed-off-by: Jamie Bainbridge <jamie.bainbridge@gmail.com> Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Diffstat (limited to 'libndp/libndp.c')
-rw-r--r--libndp/libndp.c114
1 files changed, 112 insertions, 2 deletions
diff --git a/libndp/libndp.c b/libndp/libndp.c
index e75f4f7..899c2b0 100644
--- a/libndp/libndp.c
+++ b/libndp/libndp.c
@@ -676,7 +676,7 @@ struct in6_addr *ndp_msg_addrto(struct ndp_msg *msg)
*
* Get interface index of message.
*
- * Returns: Inteface index
+ * Returns: Interface index
**/
NDP_EXPORT
uint32_t ndp_msg_ifindex(struct ndp_msg *msg)
@@ -700,18 +700,34 @@ void ndp_msg_ifindex_set(struct ndp_msg *msg, uint32_t ifindex)
* ndp_msg_send:
* @ndp: libndp library context
* @msg: message structure
+ * @flags: option flags within message type
*
* Send message.
*
* Returns: zero on success or negative number in case of an error.
**/
NDP_EXPORT
-int ndp_msg_send(struct ndp *ndp, struct ndp_msg *msg)
+int ndp_msg_send(struct ndp *ndp, struct ndp_msg *msg, uint8_t flags)
{
enum ndp_msg_type msg_type = ndp_msg_type(msg);
if (ndp_msg_type_info(msg_type)->addrto_adjust)
ndp_msg_type_info(msg_type)->addrto_adjust(&msg->addrto);
+
+ switch (msg_type) {
+ case NDP_MSG_NA:
+ if (flags & ND_OPT_NA_UNSOL) {
+ ndp_msgna_flag_override_set((struct ndp_msgna*)&msg->nd_msg, true);
+ ndp_msgna_flag_solicited_set((struct ndp_msgna*)&msg->nd_msg, false);
+ ndp_msg_addrto_adjust_all_nodes(&msg->addrto);
+ } else {
+ ndp_msgna_flag_solicited_set((struct ndp_msgna*)&msg->nd_msg, true);
+ }
+ break;
+ default:
+ break;
+ }
+
return mysendto6(ndp->sock, msg->buf, msg->len, 0,
&msg->addrto, msg->ifindex);
}
@@ -958,6 +974,100 @@ void ndp_msgra_retransmit_time_set(struct ndp_msgra *msgra,
/**
+ * SECTION: msgna getters/setters
+ * @short_description: Getters and setters for NA message
+ */
+
+/**
+ * ndp_msgna_flag_router:
+ * @msgna: NA message structure
+ *
+ * Get NA router flag.
+ *
+ * Returns: router flag.
+ **/
+NDP_EXPORT
+bool ndp_msgna_flag_router(struct ndp_msgna *msgna)
+{
+ return msgna->na->nd_na_flags_reserved & ND_NA_FLAG_ROUTER;
+}
+
+/**
+ * ndp_msgna_flag_router_set:
+ * @msgna: NA message structure
+ *
+ * Set NA router flag.
+ **/
+NDP_EXPORT
+void ndp_msgna_flag_router_set(struct ndp_msgna *msgna, bool flag_router)
+{
+ if (flag_router)
+ msgna->na->nd_na_flags_reserved |= ND_NA_FLAG_ROUTER;
+ else
+ msgna->na->nd_na_flags_reserved &= ~ND_NA_FLAG_ROUTER;
+}
+
+/**
+ * ndp_msgna_flag_solicited:
+ * @msgna: NA message structure
+ *
+ * Get NA solicited flag.
+ *
+ * Returns: solicited flag.
+ **/
+NDP_EXPORT
+bool ndp_msgna_flag_solicited(struct ndp_msgna *msgna)
+{
+ return msgna->na->nd_na_flags_reserved & ND_NA_FLAG_SOLICITED;
+}
+
+/**
+ * ndp_msgna_flag_solicited_set:
+ * @msgna: NA message structure
+ *
+ * Set NA managed flag.
+ **/
+NDP_EXPORT
+void ndp_msgna_flag_solicited_set(struct ndp_msgna *msgna, bool flag_solicited)
+{
+ if (flag_solicited)
+ msgna->na->nd_na_flags_reserved |= ND_NA_FLAG_SOLICITED;
+ else
+ msgna->na->nd_na_flags_reserved &= ~ND_NA_FLAG_SOLICITED;
+}
+
+/**
+ * ndp_msgna_flag_override:
+ * @msgna: NA message structure
+ *
+ * Get NA override flag.
+ *
+ * Returns: override flag.
+ **/
+NDP_EXPORT
+bool ndp_msgna_flag_override(struct ndp_msgna *msgna)
+{
+ return msgna->na->nd_na_flags_reserved & ND_NA_FLAG_OVERRIDE;
+}
+
+/**
+ * ndp_msgna_flag_override_set:
+ * @msgra: NA message structure
+ *
+ * Set NA override flag.
+ */
+
+NDP_EXPORT
+void ndp_msgna_flag_override_set(struct ndp_msgna *msgna, bool flag_override)
+{
+ if (flag_override)
+ msgna->na->nd_na_flags_reserved |= ND_NA_FLAG_OVERRIDE;
+ else
+ msgna->na->nd_na_flags_reserved &= ~ND_NA_FLAG_OVERRIDE;
+}
+
+
+/**
* SECTION: msg_opt infrastructure
* @short_description: Infrastructure for options
*/