linux/net/tls
Sabrina Dubroca 85eef9a41d tls: adjust recv return with async crypto and failed copy to userspace
process_rx_list may not copy as many bytes as we want to the userspace
buffer, for example in case we hit an EFAULT during the copy. If this
happens, we should only count the bytes that were actually copied,
which may be 0.

Subtracting async_copy_bytes is correct in both peek and !peek cases,
because decrypted == async_copy_bytes + peeked for the peek case: peek
is always !ZC, and we can go through either the sync or async path. In
the async case, we add chunk to both decrypted and
async_copy_bytes. In the sync case, we add chunk to both decrypted and
peeked. I missed that in commit 6caaf10442 ("tls: fix peeking with
sync+async decryption").

Fixes: 4d42cd6bc2 ("tls: rx: fix return value for async crypto")
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://lore.kernel.org/r/1b5a1eaab3c088a9dd5d9f1059ceecd7afe888d1.1711120964.git.sd@queasysnail.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-03-26 20:48:24 -07:00
..
Kconfig net/tls: Select SOCK_RX_QUEUE_MAPPING from TLS_DEVICE 2021-02-11 19:08:06 -08:00
Makefile tls: rx: async: hold onto the input skb 2022-07-18 11:24:11 +01:00
tls_device_fallback.c tls: rename MAX_IV_SIZE to TLS_MAX_IV_SIZE 2023-10-13 11:26:09 +01:00
tls_device.c tls: don't reset prot->aad_size and prot->tail_size for TLS_HW 2023-10-23 10:15:09 -07:00
tls_main.c mptcp: fix lockless access in subflow ULP diag 2024-02-18 10:25:00 +00:00
tls_proc.c tls: rx: add counter for NoPad violations 2022-07-11 19:48:33 -07:00
tls_strp.c net/tls: Use tcp_read_sock() instead of ops->read_sock() 2023-07-27 19:49:35 -07:00
tls_sw.c tls: adjust recv return with async crypto and failed copy to userspace 2024-03-26 20:48:24 -07:00
tls_toe.c tls: create an internal header 2022-07-08 18:38:45 -07:00
tls.h tls: don't reset prot->aad_size and prot->tail_size for TLS_HW 2023-10-23 10:15:09 -07:00
trace.c net/tls: add tracing for device/offload events 2019-10-05 16:29:00 -07:00
trace.h net/tls: add device decrypted trace point 2019-10-05 16:29:00 -07:00