From e50176a534f71e5730b851e07f6e6ae1d653d02e Mon Sep 17 00:00:00 2001
From: Kaian <kaian@irontec.com>
Date: Wed, 24 May 2017 15:28:29 +0200
Subject: [PATCH] capture: add support for VLAN 802.1Q header in Linux cooked
 packets #189

---
 src/capture.c | 11 +++++++++++
 src/capture.h |  4 ++++
 2 files changed, 15 insertions(+)

diff --git a/src/capture.c b/src/capture.c
index b2705ab..ed17399 100644
--- a/src/capture.c
+++ b/src/capture.c
@@ -390,6 +390,17 @@ capture_packet_reasm_ip(capture_info_t *capinfo, const struct pcap_pkthdr *heade
         }
     }
 
+#ifdef DLT_LINUX_SLL
+    if (capinfo->link == DLT_LINUX_SLL) {
+        struct sll_header *sll = (struct sll_header *) packet;
+        if (ntohs(sll->sll_protocol) == ETHERTYPE_8021Q) {
+            link_hl += 4;
+        }
+    }
+#endif
+
+
+
     // Get IP header
     ip4 = (struct ip *) (packet + link_hl);
 
diff --git a/src/capture.h b/src/capture.h
index a8a36e7..d1f2b3f 100644
--- a/src/capture.h
+++ b/src/capture.h
@@ -68,6 +68,10 @@
 #include <netinet/ip6.h>
 #endif
 
+#ifdef DLT_LINUX_SLL
+#include <pcap/sll.h>
+#endif
+
 #include <arpa/inet.h>
 #include <netinet/if_ether.h>
 #include <netinet/ip.h>