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mac80211: check if mesh frame is in RMC after decrypt
To check whether a frame is in the RMC, we need access to the mesh header. This header is encrypted in encrypted data frames, so make this check after the frame has been decrypted. Signed-off-by: Thomas Pedersen <thomas@cozybit.com> Signed-off-by: Javier Cardona <javier@cozybit.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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@ -476,7 +476,6 @@ static ieee80211_rx_result
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ieee80211_rx_mesh_check(struct ieee80211_rx_data *rx)
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{
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struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)rx->skb->data;
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unsigned int hdrlen = ieee80211_hdrlen(hdr->frame_control);
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char *dev_addr = rx->sdata->vif.addr;
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if (ieee80211_is_data(hdr->frame_control)) {
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@ -524,14 +523,6 @@ ieee80211_rx_mesh_check(struct ieee80211_rx_data *rx)
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}
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#define msh_h_get(h, l) ((struct ieee80211s_hdr *) ((u8 *)h + l))
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if (ieee80211_is_data(hdr->frame_control) &&
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is_multicast_ether_addr(hdr->addr1) &&
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mesh_rmc_check(hdr->addr3, msh_h_get(hdr, hdrlen), rx->sdata))
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return RX_DROP_MONITOR;
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#undef msh_h_get
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return RX_CONTINUE;
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}
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@ -1840,6 +1831,12 @@ ieee80211_rx_h_mesh_fwding(struct ieee80211_rx_data *rx)
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hdrlen = ieee80211_hdrlen(hdr->frame_control);
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mesh_hdr = (struct ieee80211s_hdr *) (skb->data + hdrlen);
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/* frame is in RMC, don't forward */
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if (ieee80211_is_data(hdr->frame_control) &&
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is_multicast_ether_addr(hdr->addr1) &&
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mesh_rmc_check(hdr->addr3, mesh_hdr, rx->sdata))
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return RX_DROP_MONITOR;
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if (!ieee80211_is_data(hdr->frame_control))
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return RX_CONTINUE;
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