ipw_rt->rt_hdr.it_version = PKTHDR_RADIOTAP_VERSION;
        ipw_rt->rt_hdr.it_pad = 0;      /* always good to zero */
-       ipw_rt->rt_hdr.it_len = sizeof(struct ipw_rt_hdr);      /* total header+data */
+       ipw_rt->rt_hdr.it_len = cpu_to_le16(sizeof(struct ipw_rt_hdr)); /* total header+data */
 
        /* Big bitfield of all the fields we provide in radiotap */
-       ipw_rt->rt_hdr.it_present =
-           ((1 << IEEE80211_RADIOTAP_TSFT) |
+       ipw_rt->rt_hdr.it_present = cpu_to_le32(
+            (1 << IEEE80211_RADIOTAP_TSFT) |
             (1 << IEEE80211_RADIOTAP_FLAGS) |
             (1 << IEEE80211_RADIOTAP_RATE) |
             (1 << IEEE80211_RADIOTAP_CHANNEL) |
 
        ipw_rt->rt_hdr.it_version = PKTHDR_RADIOTAP_VERSION;
        ipw_rt->rt_hdr.it_pad = 0;      /* always good to zero */
-       ipw_rt->rt_hdr.it_len = sizeof(*ipw_rt);        /* total header+data */
+       ipw_rt->rt_hdr.it_len = cpu_to_le16(sizeof(*ipw_rt));   /* total header+data */
 
        /* Set the size of the skb to the size of the frame */
-       skb_put(skb, ipw_rt->rt_hdr.it_len + len);
+       skb_put(skb, sizeof(*ipw_rt) + len);
 
        /* Big bitfield of all the fields we provide in radiotap */
-       ipw_rt->rt_hdr.it_present =
-           ((1 << IEEE80211_RADIOTAP_TSFT) |
+       ipw_rt->rt_hdr.it_present = cpu_to_le32(
+            (1 << IEEE80211_RADIOTAP_TSFT) |
             (1 << IEEE80211_RADIOTAP_FLAGS) |
             (1 << IEEE80211_RADIOTAP_RATE) |
             (1 << IEEE80211_RADIOTAP_CHANNEL) |
                rt_hdr->it_version = PKTHDR_RADIOTAP_VERSION;
                rt_hdr->it_pad = 0;
                rt_hdr->it_present = 0; /* after all, it's just an idea */
-               rt_hdr->it_present |=  (1 << IEEE80211_RADIOTAP_CHANNEL);
+               rt_hdr->it_present |=  cpu_to_le32(1 << IEEE80211_RADIOTAP_CHANNEL);
 
                *(u16*)skb_put(dst, sizeof(u16)) = cpu_to_le16(
                        ieee80211chan2mhz(priv->channel));
                                cpu_to_le16(IEEE80211_CHAN_OFDM |
                                 IEEE80211_CHAN_2GHZ);
 
-               rt_hdr->it_len = dst->len;
+               rt_hdr->it_len = cpu_to_le16(dst->len);
 
                skb_copy_from_linear_data(src, skb_put(dst, len), len);