diff options
| author | Daniel Vetter <daniel.vetter@ffwll.ch> | 2016-11-17 14:32:57 +0100 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2016-11-17 14:32:57 +0100 |
| commit | 3975797f3e72bd115c6ba80210c5fe65ebd9e14e (patch) | |
| tree | f2fa6fe843d9d0d458f5455b3852960439572913 /net/mac80211/aes_gcm.c | |
| parent | 78424c927cf194e2eb689b7871780e9182bd8c13 (diff) | |
| parent | b7c0e47d98249c2ddf21ea197b651093c6aaee00 (diff) | |
Merge remote-tracking branch 'airlied/drm-next' into drm-intel-next-queued
Tvrtko needs
commit b3c11ac267d461d3d597967164ff7278a919a39f
Author: Eric Engestrom <eric@engestrom.ch>
Date: Sat Nov 12 01:12:56 2016 +0000
drm: move allocation out of drm_get_format_name()
to be able to apply his patches without conflicts.
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Diffstat (limited to 'net/mac80211/aes_gcm.c')
| -rw-r--r-- | net/mac80211/aes_gcm.c | 43 |
1 files changed, 28 insertions, 15 deletions
diff --git a/net/mac80211/aes_gcm.c b/net/mac80211/aes_gcm.c index 3afe361fd27c..8a4397cc1b08 100644 --- a/net/mac80211/aes_gcm.c +++ b/net/mac80211/aes_gcm.c @@ -15,20 +15,23 @@ #include "key.h" #include "aes_gcm.h" -void ieee80211_aes_gcm_encrypt(struct crypto_aead *tfm, u8 *j_0, u8 *aad, - u8 *data, size_t data_len, u8 *mic) +int ieee80211_aes_gcm_encrypt(struct crypto_aead *tfm, u8 *j_0, u8 *aad, + u8 *data, size_t data_len, u8 *mic) { struct scatterlist sg[3]; + struct aead_request *aead_req; + int reqsize = sizeof(*aead_req) + crypto_aead_reqsize(tfm); + u8 *__aad; - char aead_req_data[sizeof(struct aead_request) + - crypto_aead_reqsize(tfm)] - __aligned(__alignof__(struct aead_request)); - struct aead_request *aead_req = (void *)aead_req_data; + aead_req = kzalloc(reqsize + GCM_AAD_LEN, GFP_ATOMIC); + if (!aead_req) + return -ENOMEM; - memset(aead_req, 0, sizeof(aead_req_data)); + __aad = (u8 *)aead_req + reqsize; + memcpy(__aad, aad, GCM_AAD_LEN); sg_init_table(sg, 3); - sg_set_buf(&sg[0], &aad[2], be16_to_cpup((__be16 *)aad)); + sg_set_buf(&sg[0], &__aad[2], be16_to_cpup((__be16 *)__aad)); sg_set_buf(&sg[1], data, data_len); sg_set_buf(&sg[2], mic, IEEE80211_GCMP_MIC_LEN); @@ -37,24 +40,31 @@ void ieee80211_aes_gcm_encrypt(struct crypto_aead *tfm, u8 *j_0, u8 *aad, aead_request_set_ad(aead_req, sg[0].length); crypto_aead_encrypt(aead_req); + kzfree(aead_req); + return 0; } int ieee80211_aes_gcm_decrypt(struct crypto_aead *tfm, u8 *j_0, u8 *aad, u8 *data, size_t data_len, u8 *mic) { struct scatterlist sg[3]; - char aead_req_data[sizeof(struct aead_request) + - crypto_aead_reqsize(tfm)] - __aligned(__alignof__(struct aead_request)); - struct aead_request *aead_req = (void *)aead_req_data; + struct aead_request *aead_req; + int reqsize = sizeof(*aead_req) + crypto_aead_reqsize(tfm); + u8 *__aad; + int err; if (data_len == 0) return -EINVAL; - memset(aead_req, 0, sizeof(aead_req_data)); + aead_req = kzalloc(reqsize + GCM_AAD_LEN, GFP_ATOMIC); + if (!aead_req) + return -ENOMEM; + + __aad = (u8 *)aead_req + reqsize; + memcpy(__aad, aad, GCM_AAD_LEN); sg_init_table(sg, 3); - sg_set_buf(&sg[0], &aad[2], be16_to_cpup((__be16 *)aad)); + sg_set_buf(&sg[0], &__aad[2], be16_to_cpup((__be16 *)__aad)); sg_set_buf(&sg[1], data, data_len); sg_set_buf(&sg[2], mic, IEEE80211_GCMP_MIC_LEN); @@ -63,7 +73,10 @@ int ieee80211_aes_gcm_decrypt(struct crypto_aead *tfm, u8 *j_0, u8 *aad, data_len + IEEE80211_GCMP_MIC_LEN, j_0); aead_request_set_ad(aead_req, sg[0].length); - return crypto_aead_decrypt(aead_req); + err = crypto_aead_decrypt(aead_req); + kzfree(aead_req); + + return err; } struct crypto_aead *ieee80211_aes_gcm_key_setup_encrypt(const u8 key[], |