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| author | David S. Miller <davem@davemloft.net> | 2020-02-24 15:41:54 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-02-24 15:41:54 -0800 |
| commit | 3b3e808cd883dd2e39c85e6d8debc0020b5ef5e7 (patch) | |
| tree | 3ace0f3dd1626149f457fc7328b9b58ecd29bcda /net/mac80211/aes_gmac.c | |
| parent | 13ef6ae8c0d96c00476ab9c81671e39a9f714e2b (diff) | |
| parent | 370f51d5edac83bfdb9a078d7098f06403dfa4bc (diff) | |
Merge tag 'mac80211-next-for-net-next-2020-02-24' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next
Johannes Berg says:
====================
A new set of changes:
* lots of small documentation fixes, from Jérôme Pouiller
* beacon protection (BIGTK) support from Jouni Malinen
* some initial code for TID configuration, from Tamizh chelvam
* I reverted some new API before it's actually used, because
it's wrong to mix controlled port and preauth
* a few other cleanups/fixes
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/mac80211/aes_gmac.c')
| -rw-r--r-- | net/mac80211/aes_gmac.c | 24 |
1 files changed, 18 insertions, 6 deletions
diff --git a/net/mac80211/aes_gmac.c b/net/mac80211/aes_gmac.c index 363ad1c..16ba09c 100644 --- a/net/mac80211/aes_gmac.c +++ b/net/mac80211/aes_gmac.c @@ -17,10 +17,11 @@ int ieee80211_aes_gmac(struct crypto_aead *tfm, const u8 *aad, u8 *nonce, const u8 *data, size_t data_len, u8 *mic) { - struct scatterlist sg[4]; + struct scatterlist sg[5]; u8 *zero, *__aad, iv[AES_BLOCK_SIZE]; struct aead_request *aead_req; int reqsize = sizeof(*aead_req) + crypto_aead_reqsize(tfm); + const __le16 *fc; if (data_len < GMAC_MIC_LEN) return -EINVAL; @@ -33,11 +34,22 @@ int ieee80211_aes_gmac(struct crypto_aead *tfm, const u8 *aad, u8 *nonce, __aad = zero + GMAC_MIC_LEN; memcpy(__aad, aad, GMAC_AAD_LEN); - sg_init_table(sg, 4); - sg_set_buf(&sg[0], __aad, GMAC_AAD_LEN); - sg_set_buf(&sg[1], data, data_len - GMAC_MIC_LEN); - sg_set_buf(&sg[2], zero, GMAC_MIC_LEN); - sg_set_buf(&sg[3], mic, GMAC_MIC_LEN); + fc = (const __le16 *)aad; + if (ieee80211_is_beacon(*fc)) { + /* mask Timestamp field to zero */ + sg_init_table(sg, 5); + sg_set_buf(&sg[0], __aad, GMAC_AAD_LEN); + sg_set_buf(&sg[1], zero, 8); + sg_set_buf(&sg[2], data + 8, data_len - 8 - GMAC_MIC_LEN); + sg_set_buf(&sg[3], zero, GMAC_MIC_LEN); + sg_set_buf(&sg[4], mic, GMAC_MIC_LEN); + } else { + sg_init_table(sg, 4); + sg_set_buf(&sg[0], __aad, GMAC_AAD_LEN); + sg_set_buf(&sg[1], data, data_len - GMAC_MIC_LEN); + sg_set_buf(&sg[2], zero, GMAC_MIC_LEN); + sg_set_buf(&sg[3], mic, GMAC_MIC_LEN); + } memcpy(iv, nonce, GMAC_NONCE_LEN); memset(iv + GMAC_NONCE_LEN, 0, sizeof(iv) - GMAC_NONCE_LEN); |