diff options
Diffstat (limited to 'epan')
| -rw-r--r-- | epan/dissectors/packet-ieee80211.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/epan/dissectors/packet-ieee80211.c b/epan/dissectors/packet-ieee80211.c index 08a6dafd86..76afc1dc9e 100644 --- a/epan/dissectors/packet-ieee80211.c +++ b/epan/dissectors/packet-ieee80211.c @@ -19247,13 +19247,12 @@ dissect_ieee80211_block_ack_details(tvbuff_t *tvb, packet_info *pinfo _U_, * depending on the values of the fragment number subfield in the * SSC! All values other that 0 and 2 in bits B1 & B2 are reserved. */ - frag_num = tvb_get_guint8(tvb, offset) & 0x0F; + ssn = tvb_get_letohs(tvb, offset); + frag_num = ssn & 0x0F; + ssn >>= 4; offset += add_ff_block_ack_ssc(ba_tree, tvb, pinfo, offset); if (!is_req) { - ssn = tvb_get_letohs(tvb, offset); - ssn >>= 4; - if ((frag_num & 0x06) == 0) { bmap = tvb_get_letoh64(tvb, offset); ba_bitmap_item = proto_tree_add_item(ba_tree, |