From 02b19b4c4920cf7976828216b36f0f2317aa20be Mon Sep 17 00:00:00 2001 From: Ivan Safonov Date: Tue, 2 May 2017 09:01:41 +0300 Subject: [PATCH] staging:r8188eu: inline unprotect_frame() in mon_recv_decrypted_recv() It is useful to remove IV/ICV from rtl88eu_mon_recv_hook(). Also unprotect_frame() will be very short without skb_(pull|trim). Signed-off-by: Ivan Safonov Signed-off-by: Greg Kroah-Hartman --- drivers/staging/rtl8188eu/os_dep/mon.c | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-) diff --git a/drivers/staging/rtl8188eu/os_dep/mon.c b/drivers/staging/rtl8188eu/os_dep/mon.c index 7eac87d641cf..53f853f08428 100644 --- a/drivers/staging/rtl8188eu/os_dep/mon.c +++ b/drivers/staging/rtl8188eu/os_dep/mon.c @@ -70,6 +70,8 @@ static void mon_recv_decrypted_recv(struct net_device *dev, const u8 *data, int data_len, int iv_len, int icv_len) { struct sk_buff *skb; + struct ieee80211_hdr *hdr; + int hdr_len; skb = netdev_alloc_skb(dev, data_len); if (!skb) @@ -80,7 +82,19 @@ static void mon_recv_decrypted_recv(struct net_device *dev, const u8 *data, * Frame data is not encrypted. Strip off protection so * userspace doesn't think that it is. */ - unprotect_frame(skb, iv_len, icv_len); + + hdr = (struct ieee80211_hdr *)skb->data; + hdr_len = ieee80211_hdrlen(hdr->frame_control); + + if (skb->len < hdr_len + iv_len + icv_len) { + if (ieee80211_has_protected(hdr->frame_control)) { + hdr->frame_control &= ~cpu_to_le16(IEEE80211_FCTL_PROTECTED); + + memmove(skb->data + iv_len, skb->data, hdr_len); + skb_pull(skb, iv_len); + skb_trim(skb, skb->len - icv_len); + } + } skb->ip_summed = CHECKSUM_UNNECESSARY; skb->protocol = eth_type_trans(skb, dev); -- 2.20.1