Include <config.h> unconditionally

[tcpdump] / print-macsec.c

diff --git a/print-macsec.c b/print-macsec.c
index 431ae42c59fcbb6c70b658cc1ae9e492cd64a18b..0c9ea05f133510f50a5c61bb5fa9fe06c2602e80 100644 (file)
--- a/print-macsec.c
+++ b/print-macsec.c
@@ -21,17 +21,12 @@
 
 /* \summary: MACsec printer */
 
-#ifdef HAVE_CONFIG_H
 #include <config.h>
-#endif
 
-#include <netdissect-stdinc.h>
-
-#include <string.h>
+#include "netdissect-stdinc.h"
 
 #include "netdissect.h"
 #include "addrtoname.h"
-#include "ethertype.h"
 #include "extract.h"
 
 #define MACSEC_DEFAULT_ICV_LEN 16
@@ -104,7 +99,7 @@ static void macsec_print_header(netdissect_options *ndo,
 
        if (GET_U_1(sectag->tci_an) & MACSEC_TCI_SC)
                ND_PRINT(", sci " SCI_FMT, GET_BE_U_8(sectag->secure_channel_id));
-               
+
        ND_PRINT(", ");
 }
 
@@ -123,7 +118,7 @@ int macsec_print(netdissect_options *ndo, const u_char **bp,
        u_int short_length;
 
        save_protocol = ndo->ndo_protocol;
-       ndo->ndo_protocol = "MACsec";
+       ndo->ndo_protocol = "macsec";
 
        /* we need the full MACsec header in the capture */
        if (caplen < MACSEC_SECTAG_LEN_NOSCI) {
@@ -152,7 +147,7 @@ int macsec_print(netdissect_options *ndo, const u_char **bp,
        } else
                sectag_len = MACSEC_SECTAG_LEN_NOSCI;
 
-       if ((GET_U_1(sectag->short_length) & ~MACSEC_SL_MASK) != 0 || 
+       if ((GET_U_1(sectag->short_length) & ~MACSEC_SL_MASK) != 0 ||
            GET_U_1(sectag->tci_an) & MACSEC_TCI_VERSION) {
                nd_print_invalid(ndo);
                ndo->ndo_protocol = save_protocol;
@@ -219,6 +214,13 @@ int macsec_print(netdissect_options *ndo, const u_char **bp,
        }
        *lengthp -= MACSEC_DEFAULT_ICV_LEN;
        *caplenp -= MACSEC_DEFAULT_ICV_LEN;
+       /*
+        * Update the snapend thus the ICV field is not in the payload for
+        * the caller.
+        * The ICV (Integrity Check Value) is at the end of the frame, after
+        * the secure data.
+        */
+       ndo->ndo_snapend -= MACSEC_DEFAULT_ICV_LEN;
 
        /*
         * If the SL field is non-zero, then it's the length of the
@@ -245,7 +247,7 @@ int macsec_print(netdissect_options *ndo, const u_char **bp,
                if (*caplenp > short_length)
                        *caplenp = short_length;
        }
-               
+
        ndo->ndo_protocol = save_protocol;
        return -1;
 }