On Tue, 2022-05-24 at 14:34 +0300, viktor.barna@xxxxxxxxxx wrote:
>
> +static inline void cl_ccmp_hdr2pn(u8 *pn, u8 *hdr)
> +{
> + pn[0] = hdr[7];
> + pn[1] = hdr[6];
> + pn[2] = hdr[5];
> + pn[3] = hdr[4];
> + pn[4] = hdr[1];
> + pn[5] = hdr[0];
> +}
> +
> +static int cl_key_validate_pn(struct cl_hw *cl_hw, struct cl_sta *cl_sta, struct sk_buff *skb)
> +{
> + struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
> + int hdrlen = 0, res = 0;
> + u8 pn[IEEE80211_CCMP_PN_LEN];
> + u8 tid = 0;
> +
> + hdrlen = ieee80211_hdrlen(hdr->frame_control);
> + tid = ieee80211_get_tid(hdr);
> +
> + cl_ccmp_hdr2pn(pn, skb->data + hdrlen);
> + res = memcmp(pn, cl_sta->rx_pn[tid], IEEE80211_CCMP_PN_LEN);
> + if (res < 0) {
> + cl_hw->rx_info.pkt_drop_invalid_pn++;
> + return -1;
> + }
> +
> + memcpy(cl_sta->rx_pn[tid], pn, IEEE80211_CCMP_PN_LEN);
> +
> + return 0;
> +}
Why do you do this stuff in the driver if it's effectively the same as
in mac80211?
johannes
