From: Mohsin Kazmi <sykazmi@cisco.com>
Date: Fri, 19 Sep 2025 16:07:56 +0000 (+0000)
Subject: snort: add support for DIOCTL_GET_PRIV_DATA_LEN
X-Git-Tag: v26.02-rc0~7
X-Git-Url: https://gerrit.fd.io/r/gitweb?a=commitdiff_plain;h=refs%2Fchanges%2F09%2F43609%2F2;p=vpp.git

snort: add support for DIOCTL_GET_PRIV_DATA_LEN

Type: improvement

This patch implements support for retrieving private data length via ioctl.
The private data pointer is set in the message header,
and when Snort processes the packet, it can request the length
of this private data through the ioctl interface.

Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
Change-Id: I02a831557b349bab7c9c8fe2e00cd8b085d3e5f7
---

diff --git a/src/plugins/snort/daq/main.c b/src/plugins/snort/daq/main.c
index 8c03ede6487..448ad83b376 100644
--- a/src/plugins/snort/daq/main.c
+++ b/src/plugins/snort/daq/main.c
@@ -787,6 +787,21 @@ daq_vpp_ioctl (void *handle, DAQ_IoctlCmd cmd, void *arg, size_t arglen)
 
       return DAQ_ERROR_NODEV;
     }
+  else if (cmd == DIOCTL_GET_PRIV_DATA_LEN)
+    {
+      DIOCTL_GetPrivDataLen *gpl = (DIOCTL_GetPrivDataLen *) arg;
+
+      if (arglen != sizeof (DIOCTL_GetPrivDataLen))
+	return DAQ_ERROR_NOTSUP;
+      if (gpl->msg->priv != NULL)
+	gpl->priv_data_len = sizeof (daq_vpp_msg_pool_entry_t);
+      else
+	gpl->priv_data_len = 0;
+
+      DEBUG ("ioctl cmd %s %u", daq_vpp_ioctl_cmd_to_str (cmd),
+	     gpl->priv_data_len);
+      return DAQ_SUCCESS;
+    }
 
   return DAQ_ERROR_NOTSUP;
 }