torvalds-linux/net/tls
Benjamin Coddington b341ca51d2 tls: Fix tls_sw_sendmsg error handling
We've noticed that NFS can hang when using RPC over TLS on an unstable
connection, and investigation shows that the RPC layer is stuck in a tight
loop attempting to transmit, but forever getting -EBADMSG back from the
underlying network.  The loop begins when tcp_sendmsg_locked() returns
-EPIPE to tls_tx_records(), but that error is converted to -EBADMSG when
calling the socket's error reporting handler.

Instead of converting errors from tcp_sendmsg_locked(), let's pass them
along in this path.  The RPC layer handles -EPIPE by reconnecting the
transport, which prevents the endless attempts to transmit on a broken
connection.

Signed-off-by: Benjamin Coddington <bcodding@redhat.com>
Fixes: a42055e8d2 ("net/tls: Add support for async encryption of records for performance")
Link: https://patch.msgid.link/9594185559881679d81f071b181a10eb07cd079f.1736004079.git.bcodding@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2025-01-07 17:00:19 -08:00
..
Kconfig
Makefile
tls_device_fallback.c
tls_device.c
tls_main.c
tls_proc.c
tls_strp.c
tls_sw.c
tls_toe.c
tls.h
trace.c
trace.h