4.14-stable review patch. If anyone has any objections, please let me know.
------------------
commit 6d88207fcfddc002afe3e2e4a455e5201089d5d9 upstream.
The tx configuration is now stored in ctx->tx_conf.
And sk->sk_prot is updated trough a function
This will simplify things when we add rx
and support for different possible
tx and rx cross configurations.
Signed-off-by: Ilya Lesokhin <ilyal@xxxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Ben Hutchings <ben.hutchings@xxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
include/net/tls.h | 2 ++
net/tls/tls_main.c | 46 ++++++++++++++++++++++++++++++++--------------
2 files changed, 34 insertions(+), 14 deletions(-)
diff --git a/include/net/tls.h b/include/net/tls.h
index 86ed3dd80fe7..0c3ab2af74d3 100644
--- a/include/net/tls.h
+++ b/include/net/tls.h
@@ -89,6 +89,8 @@ struct tls_context {
void *priv_ctx;
+ u8 tx_conf:2;
+
u16 prepend_size;
u16 tag_size;
u16 overhead_size;
diff --git a/net/tls/tls_main.c b/net/tls/tls_main.c
index 4f2971f528db..191a8adee3ea 100644
--- a/net/tls/tls_main.c
+++ b/net/tls/tls_main.c
@@ -46,8 +46,18 @@ MODULE_DESCRIPTION("Transport Layer Security Support");
MODULE_LICENSE("Dual BSD/GPL");
MODULE_ALIAS_TCP_ULP("tls");
-static struct proto tls_base_prot;
-static struct proto tls_sw_prot;
+enum {
+ TLS_BASE_TX,
+ TLS_SW_TX,
+ TLS_NUM_CONFIG,
+};
+
+static struct proto tls_prots[TLS_NUM_CONFIG];
+
+static inline void update_sk_prot(struct sock *sk, struct tls_context *ctx)
+{
+ sk->sk_prot = &tls_prots[ctx->tx_conf];
+}
int wait_on_pending_writer(struct sock *sk, long *timeo)
{
@@ -364,8 +374,8 @@ static int do_tls_setsockopt_tx(struct sock *sk, char __user *optval,
{
struct tls_crypto_info *crypto_info, tmp_crypto_info;
struct tls_context *ctx = tls_get_ctx(sk);
- struct proto *prot = NULL;
int rc = 0;
+ int tx_conf;
if (!optval || (optlen < sizeof(*crypto_info))) {
rc = -EINVAL;
@@ -422,11 +432,12 @@ static int do_tls_setsockopt_tx(struct sock *sk, char __user *optval,
/* currently SW is default, we will have ethtool in future */
rc = tls_set_sw_offload(sk, ctx);
- prot = &tls_sw_prot;
+ tx_conf = TLS_SW_TX;
if (rc)
goto err_crypto_info;
- sk->sk_prot = prot;
+ ctx->tx_conf = tx_conf;
+ update_sk_prot(sk, ctx);
goto out;
err_crypto_info:
@@ -488,7 +499,9 @@ static int tls_init(struct sock *sk)
icsk->icsk_ulp_data = ctx;
ctx->setsockopt = sk->sk_prot->setsockopt;
ctx->getsockopt = sk->sk_prot->getsockopt;
- sk->sk_prot = &tls_base_prot;
+
+ ctx->tx_conf = TLS_BASE_TX;
+ update_sk_prot(sk, ctx);
out:
return rc;
}
@@ -499,16 +512,21 @@ static struct tcp_ulp_ops tcp_tls_ulp_ops __read_mostly = {
.init = tls_init,
};
+static void build_protos(struct proto *prot, struct proto *base)
+{
+ prot[TLS_BASE_TX] = *base;
+ prot[TLS_BASE_TX].setsockopt = tls_setsockopt;
+ prot[TLS_BASE_TX].getsockopt = tls_getsockopt;
+
+ prot[TLS_SW_TX] = prot[TLS_BASE_TX];
+ prot[TLS_SW_TX].close = tls_sk_proto_close;
+ prot[TLS_SW_TX].sendmsg = tls_sw_sendmsg;
+ prot[TLS_SW_TX].sendpage = tls_sw_sendpage;
+}
+
static int __init tls_register(void)
{
- tls_base_prot = tcp_prot;
- tls_base_prot.setsockopt = tls_setsockopt;
- tls_base_prot.getsockopt = tls_getsockopt;
-
- tls_sw_prot = tls_base_prot;
- tls_sw_prot.sendmsg = tls_sw_sendmsg;
- tls_sw_prot.sendpage = tls_sw_sendpage;
- tls_sw_prot.close = tls_sk_proto_close;
+ build_protos(tls_prots, &tcp_prot);
tcp_register_ulp(&tcp_tls_ulp_ops);
--
2.17.1
