macsec: ensure rx_sa is set when validation is disabled

macsec_decrypt() is not called when validation is disabled and so
macsec_skb_cb(skb)->rx_sa is not set; but it is used later in
macsec_post_decrypt(), ensure that it's always initialized.

Fixes: c09440f7dcb3 ("macsec: introduce IEEE 802.1AE driver")
Signed-off-by: Beniamino Galvani <bgalvani@redhat.com>
Acked-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/net/macsec.c b/drivers/net/macsec.c
index d8b2b49d6d5f..2d0beb1b801c 100644
--- a/drivers/net/macsec.c
+++ b/drivers/net/macsec.c
@@ -944,7 +944,6 @@ static struct sk_buff *macsec_decrypt(struct sk_buff *skb,
         }
 
         macsec_skb_cb(skb)->req = req;
-        macsec_skb_cb(skb)->rx_sa = rx_sa;
         skb->dev = dev;
         aead_request_set_callback(req, 0, macsec_decrypt_done, skb);
 
@@ -1172,6 +1171,8 @@ static rx_handler_result_t macsec_handle_frame(struct sk_buff **pskb)
                 }
         }
 
+        macsec_skb_cb(skb)->rx_sa = rx_sa;
+
         /* Disabled && !changed text => skip validation */
         if (hdr->tci_an & MACSEC_TCI_C ||
             secy->validate_frames != MACSEC_VALIDATE_DISABLED)