From d58a2fa903c18f97aac30cd3c4c8a378a2c647c4 Mon Sep 17 00:00:00 2001 From: Alexander Aring Date: Mon, 28 Sep 2015 09:00:26 +0200 Subject: mac802154: add comments for llsec issues While doing a little test with the llsec implementation I saw these issues. We should move decryption and encruption somewhere else, otherwise while capturing with wireshark the mac header shows secuirty fields but the payload is plaintext. A complete other issue is what doing with HardMAC drivers where the payload is always plaintext. I think we need a special handling then in userspace. We currently doesn't support any HardMAC transceivers, so we should fix the first issue for SoftMAC transceivers. Signed-off-by: Alexander Aring Signed-off-by: Marcel Holtmann --- net/mac802154/tx.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'net/mac802154/tx.c') diff --git a/net/mac802154/tx.c b/net/mac802154/tx.c index 5ee596e00a6d..b205bbec7bdf 100644 --- a/net/mac802154/tx.c +++ b/net/mac802154/tx.c @@ -129,6 +129,10 @@ ieee802154_subif_start_xmit(struct sk_buff *skb, struct net_device *dev) struct ieee802154_sub_if_data *sdata = IEEE802154_DEV_TO_SUB_IF(dev); int rc; + /* TODO we should move it to wpan_dev_hard_header and dev_hard_header + * functions. The reason is wireshark will show a mac header which is + * with security fields but the payload is not encrypted. + */ rc = mac802154_llsec_encrypt(&sdata->sec, skb); if (rc) { netdev_warn(dev, "encryption failed: %i\n", rc); -- cgit v1.2.1