ip: add support for buffer offload metadata in ip midchain

[vpp.git] / src / vnet / ip / ip4_options.c

diff --git a/src/vnet/ip/ip4_options.c b/src/vnet/ip/ip4_options.c
index 9b01151..bbe311f 100644 (file)
--- a/src/vnet/ip/ip4_options.c
+++ b/src/vnet/ip/ip4_options.c
@@ -77,6 +77,11 @@ VLIB_NODE_FN (ip4_options_node) (vlib_main_t * vm,
          switch (options[0] & 0x7f)
            {
            case IP4_ROUTER_ALERT_OPTION:
+             /*
+              * check the option length
+              */
+             if (options[1] != 4)
+               break;
              /*
               * if it's an IGMP packet, pass up the local stack
               */
@@ -122,7 +127,6 @@ format_ip4_options_trace (u8 * s, va_list * args)
   return s;
 }
 
-/* *INDENT-OFF* */
 VLIB_REGISTER_NODE (ip4_options_node) = {
   .name = "ip4-options",
   .vector_size = sizeof (u32),
@@ -135,7 +139,6 @@ VLIB_REGISTER_NODE (ip4_options_node) = {
   .format_buffer = format_ip4_header,
   .format_trace = format_ip4_options_trace,
 };
-/* *INDENT-ON* */
 
 /*
  * fd.io coding-style-patch-verification: ON