CCMP_HDR_LEN
if (skb_headroom(skb) < CCMP_HDR_LEN || skb->len < hdr_len)
pos = skb_push(skb, CCMP_HDR_LEN);
memmove(pos, pos + CCMP_HDR_LEN, hdr_len);
return CCMP_HDR_LEN;
sg_set_buf(&sg[1], skb->data + hdr_len + CCMP_HDR_LEN,
size_t data_len = skb->len - hdr_len - CCMP_HDR_LEN;
if (skb->len < hdr_len + CCMP_HDR_LEN + CCMP_MIC_LEN) {
memmove(skb->data + CCMP_HDR_LEN, skb->data, hdr_len);
skb_pull(skb, CCMP_HDR_LEN);
.extra_mpdu_prefix_len = CCMP_HDR_LEN,