macsec: fix detection of RXSCs when toggling offloading

macsec_is_configured incorrectly uses secy->n_rx_sc to check if some
RXSCs exist. secy->n_rx_sc only counts the number of active RXSCs, but
there can also be inactive SCs as well, which may be stored in the
driver (in case we're disabling offloading), or would have to be
pushed to the device (in case we're trying to enable offloading).

As long as RXSCs active on creation and never turned off, the issue is
not visible.

Fixes: dcb780fb2795 ("net: macsec: add nla support for changing the offloading selection")
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Reviewed-by: Antoine Tenart <atenart@kernel.org>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/macsec.c b/drivers/net/macsec.c
index 1b4d856f4bd701e2b4d2d888d7bc6a8029cfc0a7..700a8f96c6c2fac79c5f4613d2dd6c478665afde 100644 (file)
--- a/drivers/net/macsec.c
+++ b/drivers/net/macsec.c
@@ -2571,7 +2571,7 @@ static bool macsec_is_configured(struct macsec_dev *macsec)
        struct macsec_tx_sc *tx_sc = &secy->tx_sc;
        int i;
 
-       if (secy->n_rx_sc > 0)
+       if (secy->rx_sc)
                return true;
 
        for (i = 0; i < MACSEC_NUM_AN; i++)