TLS "record layer offload" requires TOE, and bypasses most of
the normal networking stack. It is also significantly less
maintained. Allow users to compile it out to avoid issues.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: John Hurley <john.hurley@netronome.com>
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
config CRYPTO_DEV_CHELSIO_TLS
tristate "Chelsio Crypto Inline TLS Driver"
depends on CHELSIO_T4
- depends on TLS
+ depends on TLS_TOE
select CRYPTO_DEV_CHELSIO
---help---
Support Chelsio Inline TLS with Chelsio crypto accelerator.
Enable kernel support for HW offload of the TLS protocol.
If unsure, say N.
+
+config TLS_TOE
+ bool "Transport Layer Security TCP stack bypass"
+ depends on TLS
+ default n
+ help
+ Enable kernel support for legacy HW offload of the TLS protocol,
+ which is incompatible with the Linux networking stack semantics.
+
+ If unsure, say N.
obj-$(CONFIG_TLS) += tls.o
-tls-y := tls_main.o tls_sw.o tls_toe.o
+tls-y := tls_main.o tls_sw.o
+tls-$(CONFIG_TLS_TOE) += tls_toe.o
tls-$(CONFIG_TLS_DEVICE) += tls_device.o tls_device_fallback.o
prot[TLS_HW][TLS_HW] = prot[TLS_HW][TLS_SW];
#endif
-
+#ifdef CONFIG_TLS_TOE
prot[TLS_HW_RECORD][TLS_HW_RECORD] = *base;
prot[TLS_HW_RECORD][TLS_HW_RECORD].hash = tls_toe_hash;
prot[TLS_HW_RECORD][TLS_HW_RECORD].unhash = tls_toe_unhash;
+#endif
}
static int tls_init(struct sock *sk)
tls_build_proto(sk);
+#ifdef CONFIG_TLS_TOE
if (tls_toe_bypass(sk))
return 0;
+#endif
/* The TLS ulp is currently supported only for TCP sockets
* in ESTABLISHED state.