Re: [PATCH] mac80211: aead api to reduce redundancy

From: Johannes Berg
Date: Mon Oct 02 2017 - 08:05:08 EST


Please use "v2" tag or so in the subject line, having the same patch
again is really not helpful.

The next should be v3, obviously.

> +++ b/net/mac80211/aead_api.c
> @@ -1,7 +1,4 @@
> -/*
> - * Copyright 2014-2015, Qualcomm Atheros, Inc.
> - *
> - * This program is free software; you can redistribute it and/or
> modify
> +/* This program is free software; you can redistribute it and/or
> modify

I see no reason to make this change, why remove copyright?

> +++ b/net/mac80211/wpa.c
> @@ -464,7 +464,8 @@ static int ccmp_encrypt_skb(struct
> ieee80211_tx_data *tx, struct sk_buff *skb,
> pos += IEEE80211_CCMP_HDR_LEN;
> ccmp_special_blocks(skb, pn, b_0, aad);
> return ieee80211_aes_ccm_encrypt(key->u.ccmp.tfm, b_0, aad,
> pos, len,
> - skb_put(skb, mic_len),
> mic_len);
> + skb_put(skb,
> + key->u.ccmp.tfm-
> >authsize));
> }

I see no reason for the change from mic_len to authsize here?

> @@ -540,10 +541,11 @@ ieee80211_crypto_ccmp_decrypt(struct
> ieee80211_rx_data *rx,
> ccmp_special_blocks(skb, pn, b_0, aad);
>
> if (ieee80211_aes_ccm_decrypt(
> - key->u.ccmp.tfm, b_0, aad,
> - skb->data + hdrlen + IEEE80211_CCMP_HDR_LEN,
> - data_len,
> - skb->data + skb->len - mic_len, mic_len))
> + key->u.ccmp.tfm, b_0, aad,
> + skb->data + hdrlen + IEEE80211_CCMP_HDR_LEN,
> + data_len,
> + skb->data + skb->len - key->u.ccmp.tfm->authsize
> + ))
> return RX_DROP_UNUSABLE;

That's a really really strange way of writing this ...

Please reformat.

johannes