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authorHerbert Xu <herbert@gondor.apana.org.au>2020-05-29 17:23:49 +0300
committerHerbert Xu <herbert@gondor.apana.org.au>2020-06-18 10:19:44 +0300
commitf3c802a1f30013f8f723b62d7fa49eb9e991da23 (patch)
treed0cc454c65a9ee0a9dc741c3ce32969a1b28be8a /crypto/algif_aead.c
parent1532e31f5098a220c920303213017b11df777c0b (diff)
downloadlinux-f3c802a1f30013f8f723b62d7fa49eb9e991da23.tar.xz
crypto: algif_aead - Only wake up when ctx->more is zero
AEAD does not support partial requests so we must not wake up while ctx->more is set. In order to distinguish between the case of no data sent yet and a zero-length request, a new init flag has been added to ctx. SKCIPHER has also been modified to ensure that at least a block of data is available if there is more data to come. Fixes: 2d97591ef43d ("crypto: af_alg - consolidation of...") Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto/algif_aead.c')
-rw-r--r--crypto/algif_aead.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/crypto/algif_aead.c b/crypto/algif_aead.c
index 0ae000a61c7f..d48d2156e621 100644
--- a/crypto/algif_aead.c
+++ b/crypto/algif_aead.c
@@ -106,8 +106,8 @@ static int _aead_recvmsg(struct socket *sock, struct msghdr *msg,
size_t usedpages = 0; /* [in] RX bufs to be used from user */
size_t processed = 0; /* [in] TX bufs to be consumed */
- if (!ctx->used) {
- err = af_alg_wait_for_data(sk, flags);
+ if (!ctx->init || ctx->more) {
+ err = af_alg_wait_for_data(sk, flags, 0);
if (err)
return err;
}