sfc: Return EBUSY for filter insertion on EF10, matching Falcon/Siena

The MC firmware will return error MC_CMD_ERR_ENOSPC if filter
insertion fails due to lack of resources.  The net driver's filter
implementation for Falcon-architecture returns EBUSY.  They should
behave consistently, so for EF10 change ENOSPC to EBUSY.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/net/ethernet/sfc/ef10.c b/drivers/net/ethernet/sfc/ef10.c
index 45af374b1df9..ca922b958a2e 100644
--- a/drivers/net/ethernet/sfc/ef10.c
+++ b/drivers/net/ethernet/sfc/ef10.c
@@ -2259,6 +2259,8 @@ static int efx_ef10_filter_push(struct efx_nic *efx,
                           outbuf, sizeof(outbuf), NULL);
         if (rc == 0)
                 *handle = MCDI_QWORD(outbuf, FILTER_OP_OUT_HANDLE);
+        if (rc == -ENOSPC)
+                rc = -EBUSY; /* to match efx_farch_filter_insert() */
         return rc;
 }