[PATCH 5.15 31/84] tls: hw: rx: use return value of tls_device_decrypted() to carry status

Greg Kroah-Hartman
2024-03-04T21:53:53Z

From: Jakub Kicinski <kuba@kernel.org>

[ Upstream commit 71471ca32505afa7c3f7f6a8268716e1ddb81cd4 ]

Instead of tls_device poking into internals of the message
return 1 from tls_device_decrypted() if the device handled
the decryption.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Stable-dep-of: f7fa16d49837 ("tls: decrement decrypt_pending if no async completion will be called")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/tls/tls_device.c | 7 ++-----
net/tls/tls_sw.c | 5 ++---
2 files changed, 4 insertions(+), 8 deletions(-)

diff --git a/net/tls/tls_device.c b/net/tls/tls_device.c
index f23d18e666284..e7c361807590d 100644
--- a/net/tls/tls_device.c
+++ b/net/tls/tls_device.c
@@ -936,7 +936,6 @@ int tls_device_decrypted(struct sock *sk, struct tls_context *tls_ctx,
struct sk_buff *skb, struct strp_msg *rxm)
{
struct tls_offload_context_rx *ctx = tls_offload_ctx_rx(tls_ctx);
- struct tls_msg *tlm = tls_msg(skb);
int is_decrypted = skb->decrypted;
int is_encrypted = !is_decrypted;
struct sk_buff *skb_iter;
@@ -951,11 +950,9 @@ int tls_device_decrypted(struct sock *sk, struct tls_context *tls_ctx,
tls_ctx->rx.rec_seq, rxm->full_len,
is_encrypted, is_decrypted);

- tlm->decrypted |= is_decrypted;
-
if (unlikely(test_bit(TLS_RX_DEV_DEGRADED, &tls_ctx->flags))) {
if (likely(is_encrypted || is_decrypted))
- return 0;
+ return is_decrypted;

/* After tls_device_down disables the offload, the next SKB will
* likely have initial fragments decrypted, and final ones not
@@ -970,7 +967,7 @@ int tls_device_decrypted(struct sock *sk, struct tls_context *tls_ctx,
*/
if (is_decrypted) {
ctx->resync_nh_reset = 1;
- return 0;
+ return is_decrypted;
}
if (is_encrypted) {
tls_device_core_ctrl_rx_resync(tls_ctx, ctx, sk, skb);
diff --git a/net/tls/tls_sw.c b/net/tls/tls_sw.c
index 7da17dd7c38b9..eed32ef3ca4a0 100644
--- a/net/tls/tls_sw.c
+++ b/net/tls/tls_sw.c
@@ -1571,9 +1571,8 @@ static int decrypt_skb_update(struct sock *sk, struct sk_buff *skb,
err = tls_device_decrypted(sk, tls_ctx, skb, rxm);
if (err < 0)
return err;
-
- /* skip SW decryption if NIC handled it already */
- if (tlm->decrypted) {
+ if (err > 0) {
+ tlm->decrypted = 1;
*zc = false;
goto decrypt_done;
}
--
2.43.0