sfc: Validate IRQ moderation parameters in efx_init_irq_moderation()

Add a range check, and move the check that RX and TX are consistent
from efx_ethtool_set_coalesce().

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 2 deletions

diff --git a/drivers/net/ethernet/sfc/efx.h b/drivers/net/ethernet/sfc/efx.h
index 8ca68631fce5..442f4d0c247d 100644
--- a/drivers/net/ethernet/sfc/efx.h
+++ b/drivers/net/ethernet/sfc/efx.h
@@ -111,8 +111,9 @@ extern int efx_reset_up(struct efx_nic *efx, enum reset_type method, bool ok);
 
 /* Global */
 extern void efx_schedule_reset(struct efx_nic *efx, enum reset_type type);
-extern void efx_init_irq_moderation(struct efx_nic *efx, unsigned int tx_usecs,
-                                    unsigned int rx_usecs, bool rx_adaptive);
+extern int efx_init_irq_moderation(struct efx_nic *efx, unsigned int tx_usecs,
+                                   unsigned int rx_usecs, bool rx_adaptive,
+                                   bool rx_may_override_tx);
 extern void efx_get_irq_moderation(struct efx_nic *efx, unsigned int *tx_usecs,
                                    unsigned int *rx_usecs, bool *rx_adaptive);