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net/tls: Replace TLS_RX_SYNC_RUNNING with RCU

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[ Upstream commit 05fc8b6cbd4f979a6f25759c4a17dd5f657f7ecd ]

RCU synchronization is guaranteed to finish in finite time, unlike a
busy loop that polls a flag. This patch is a preparation for the bugfix
in the next patch, where the same synchronize_net() call will also be
used to sync with the TX datapath.

Signed-off-by: Maxim Mikityanskiy <maximmi@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Maxim Mikityanskiy
2021-06-01 15:07:59 +03:00
committed by Greg Kroah-Hartman
parent a5de17bb91
commit 874ece252e
2 changed files with 3 additions and 8 deletions
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1
include/net/tls.h
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@@ -193,7 +193,6 @@ struct tls_offload_context_tx {
(sizeof(struct tls_offload_context_tx) + TLS_DRIVER_STATE_SIZE_TX)
enum tls_context_flags {
TLS_RX_SYNC_RUNNING = 0,
/* Unlike RX where resync is driven entirely by the core in TX only
* the driver knows when things went out of sync, so we need the flag
* to be atomic.