From 5dc46ae7c70028280c3be2d96aa71049142aa001 Mon Sep 17 00:00:00 2001
From: Eric Leblond <eric@regit.org>
Date: Tue, 20 Dec 2011 15:10:57 +0100
Subject: [PATCH] pf-ring: Mark emitted traffic as non checksummed

The traffic sent by an interface is potentially offloaded. This
patch adds detection of TX packets and set the corresponding flag.
---
 src/source-pfring.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/source-pfring.c b/src/source-pfring.c
index 4611bca214..7160aeec13 100644
--- a/src/source-pfring.c
+++ b/src/source-pfring.c
@@ -182,6 +182,12 @@ static inline void PfringProcessPacket(void *user, struct pfring_pkthdr *h, Pack
      * so that is what we do here. */
     p->datalink = LINKTYPE_ETHERNET;
 
+    /* Packet is being sent */
+    if (h->extended_hdr.rx_direction == 0) {
+        /* Checksum can be offloaded */
+        p->flags |= PKT_IGNORE_CHECKSUM;
+    }
+
     SET_PKT_LEN(p, h->caplen);
 }