On 19.10.2020 04:54, Jia-Ju Bai wrote:
> In rtl8180_tx(), skb->data is mapped to streaming DMA on line 476:
> mapping = dma_map_single(..., skb->data, ...);
>
> On line 459, skb->data is assigned to hdr after cast:
> struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
>
> Then hdr-
On Mon, 19 Oct 2020 10:54:20 +0800 Jia-Ju Bai wrote:
> + if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
> + if (info->flags & IEEE80211_TX_CTL_FIRST_FRAGMENT)
> + priv->seqno += 0x10;
> + hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
> +
In rtl8180_tx(), skb->data is mapped to streaming DMA on line 476:
mapping = dma_map_single(..., skb->data, ...);
On line 459, skb->data is assigned to hdr after cast:
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
Then hdr->seq_ctrl is accessed on lines 540 and 541:
hdr->se
