Add some comments.

OK, where's NSS for the presumably-one-and-only user hiding for 11ac?

Change-Id: I53eb216c5d209dc5bb46c1d0aca7f8a200161e3e
Reviewed-on: https://code.wireshark.org/review/9512
Reviewed-by: Guy Harris <guy@alum.mit.edu>

3 files changed, 13 insertions, 0 deletions

diff --git a/epan/dissectors/packet-ixveriwave.c b/epan/dissectors/packet-ixveriwave.c
index 54d8703cc7..04cab895db 100644
--- a/epan/dissectors/packet-ixveriwave.c
+++ b/epan/dissectors/packet-ixveriwave.c
@@ -731,6 +731,10 @@ wlantap_dissect(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, proto_tree
             phdr.phy_info.info_11ac.presence_flags =
                 PHDR_802_11AC_HAS_SHORT_GI;
             phdr.phy_info.info_11ac.short_gi = ((vw_rflags & FLAGS_CHAN_SHORTGI) != 0);
+            /*
+             * XXX - this probably has only one user, so only one MCS index
+             * and only one NSS, but where's the NSS?
+             */
             for (i = 0; i < 4; i++)
                 phdr.phy_info.info_11ac.nss[i] = 0;
         } else {
diff --git a/epan/dissectors/packet-peekremote.c b/epan/dissectors/packet-peekremote.c
index 3411d47270..a8711df8c3 100644
--- a/epan/dissectors/packet-peekremote.c
+++ b/epan/dissectors/packet-peekremote.c
@@ -475,6 +475,10 @@ dissect_peekremote_new(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void
         guint i;
         phdr.phy = PHDR_802_11_PHY_11AC;
         phdr.phy_info.info_11ac.presence_flags = 0;
+        /*
+         * XXX - this probably has only one user, so only one MCS index
+         * and only one NSS, but where's the NSS?
+         */
         for (i = 0; i < 4; i++) {
           phdr.phy_info.info_11ac.nss[i] = 0;
         }
diff --git a/wiretap/peektagged.c b/wiretap/peektagged.c
index d6cd8741b2..1c1426fcf5 100644
--- a/wiretap/peektagged.c
+++ b/wiretap/peektagged.c
@@ -614,6 +614,11 @@ peektagged_read_packet(wtap *wth, FILE_T fh, struct wtap_pkthdr *phdr,
             if (ext_flags & EXT_FLAG_802_11ac) {
                 ieee_802_11.phy = PHDR_802_11_PHY_11AC;
                 ieee_802_11.phy_info.info_11ac.presence_flags = 0;
+                /*
+                 * XXX - this probably has only one user, so only
+                 * one MCS index and only one NSS, but where's the
+                 * NSS?
+                 */
                 for (i = 0; i < 4; i++)
                     ieee_802_11.phy_info.info_11ac.nss[i] = 0;