Handle older OSes without DLT_PRISM_HEADER/DLT_AIRONET_HEADER/DLT_PPI.

Check whether they're defined before using them.

diff --git a/pcap-bpf.c b/pcap-bpf.c
index 3ad7fafb986e6ce9b3534e4bbb69f1c239d6b4cc..6fe2eaf5f0222f698b72e4b29721825850e3dcdf 100644 (file)
--- a/pcap-bpf.c
+++ b/pcap-bpf.c
@@ -3049,8 +3049,12 @@ find_802_11(struct bpf_dltlist *bdlp)
                                new_dlt = bdlp->bfl_list[i];
                        break;
 
+#ifdef DLT_PRISM_HEADER
                case DLT_PRISM_HEADER:
+#endif
+#ifdef DLT_AIRONET_HEADER
                case DLT_AIRONET_HEADER:
+#endif
                case DLT_IEEE802_11_RADIO_AVS:
                        /*
                         * 802.11 with radio, but not radiotap.
@@ -3145,11 +3149,17 @@ remove_802_11(pcap_t *p)
                switch (p->dlt_list[i]) {
 
                case DLT_IEEE802_11:
+#ifdef DLT_PRISM_HEADER
                case DLT_PRISM_HEADER:
+#endif
+#ifdef DLT_AIRONET_HEADER
                case DLT_AIRONET_HEADER:
+#endif
                case DLT_IEEE802_11_RADIO:
                case DLT_IEEE802_11_RADIO_AVS:
+#ifdef DLT_PPI
                case DLT_PPI:
+#endif
                        /*
                         * 802.11.  Don't offer this one.
                         */