Skip the LLC and SNAP headers with -x.

[tcpdump] / print-802_11.c

diff --git a/print-802_11.c b/print-802_11.c
index 2c9f2a38be41648eb7834cb4ac5fa6376fb1f51e..2b4463ec07ac6fbf5bfde74a5af3d1792ed632e7 100644 (file)
--- a/print-802_11.c
+++ b/print-802_11.c
@@ -2332,6 +2332,7 @@ ieee802_11_print(netdissect_options *ndo,
        uint16_t fc;
        u_int caplen, hdrlen, meshdrlen;
        const uint8_t *src, *dst;
        uint16_t fc;
        u_int caplen, hdrlen, meshdrlen;
        const uint8_t *src, *dst;

+       int llc_hdrlen;

 
        caplen = orig_caplen;
        /* Remove FCS, if present */
 
        caplen = orig_caplen;
        /* Remove FCS, if present */


@@ -2408,14 +2409,17 @@ ieee802_11_print(netdissect_options *ndo,
                        }
                } else {
                        get_data_src_dst_mac(fc, p - hdrlen, &src, &dst);
                        }
                } else {
                        get_data_src_dst_mac(fc, p - hdrlen, &src, &dst);

-                       if (llc_print(ndo, p, length, caplen, dst, src) == 0) {
+                       llc_hdrlen = llc_print(ndo, p, length, caplen, dst, src);
+                       if (llc_hdrlen < 0) {

                                /*
                                 * Some kinds of LLC packet we cannot
                                 * handle intelligently
                                 */
                                if (!ndo->ndo_suppress_default_print)
                                        ND_DEFAULTPRINT(p, caplen);
                                /*
                                 * Some kinds of LLC packet we cannot
                                 * handle intelligently
                                 */
                                if (!ndo->ndo_suppress_default_print)
                                        ND_DEFAULTPRINT(p, caplen);

+                               llc_hdrlen = -llc_hdrlen;

                        }
                        }

+                       hdrlen += llc_hdrlen;

                }
                break;
        default:
                }
                break;
        default: