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| author | Jason A. Donenfeld <Jason@zx2c4.com> | 2016-11-06 16:58:57 +0100 |
|---|---|---|
| committer | Jason A. Donenfeld <Jason@zx2c4.com> | 2016-11-06 16:58:57 +0100 |
| commit | f7483321a25f8ce8e919ff635798db75976a11e5 (patch) | |
| tree | 3f212d0c8b96fb33130bc0831f0b37150f5a9f63 /src/cookie.c | |
| parent | a7b458b257d722000e2b518e4e6141c49f30c761 (diff) | |
cookie: avoid void pointer arithmatic
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Diffstat (limited to 'src/cookie.c')
| -rw-r--r-- | src/cookie.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/src/cookie.c b/src/cookie.c index 8d66457..84f9d25 100644 --- a/src/cookie.c +++ b/src/cookie.c @@ -94,7 +94,7 @@ enum cookie_mac_state cookie_validate_packet(struct cookie_checker *checker, str u8 computed_mac[COOKIE_LEN]; u8 cookie[COOKIE_LEN]; enum cookie_mac_state ret; - struct message_macs *macs = (struct message_macs *)(data_start + data_len - sizeof(struct message_macs)); + struct message_macs *macs = (struct message_macs *)((u8 *)data_start + data_len - sizeof(struct message_macs)); ret = INVALID_MAC; down_read(&checker->device->static_identity.lock); @@ -132,7 +132,7 @@ out: void cookie_add_mac_to_packet(void *message, size_t len, struct wireguard_peer *peer) { - struct message_macs *macs = message + len - sizeof(struct message_macs); + struct message_macs *macs = (struct message_macs *)((u8 *)message + len - sizeof(struct message_macs)); down_read(&peer->device->static_identity.lock); if (unlikely(!peer->device->static_identity.has_identity)) { @@ -158,7 +158,7 @@ void cookie_add_mac_to_packet(void *message, size_t len, struct wireguard_peer * void cookie_message_create(struct message_handshake_cookie *dst, struct sk_buff *skb, void *data_start, size_t data_len, __le32 index, struct cookie_checker *checker) { - struct message_macs *macs = (struct message_macs *)(data_start + data_len - sizeof(struct message_macs)); + struct message_macs *macs = (struct message_macs *)((u8 *)data_start + data_len - sizeof(struct message_macs)); struct blake2s_state state; u8 key[NOISE_SYMMETRIC_KEY_LEN]; u8 cookie[COOKIE_LEN]; |