net/sfc/base: reject automatic filter creation by users

The automatic filter priority may only be used by filter implementation,
so reject the attempts to create such filters by client drivers.

Fixes: f9565517ff4f ("net/sfc/base: import filters support")
Cc: stable@dpdk.org
Signed-off-by: Igor Romanov <igor.romanov@oktetlabs.ru>
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>

diff --git a/drivers/net/sfc/base/efx_filter.c b/drivers/net/sfc/base/efx_filter.c
index 575f622..36332a2 100644 (file)
--- a/drivers/net/sfc/base/efx_filter.c
+++ b/drivers/net/sfc/base/efx_filter.c
@@ -93,8 +93,15 @@ efx_filter_insert(
                goto fail2;
        }
 
+       if (spec->efs_priority == EFX_FILTER_PRI_AUTO) {
+               rc = EINVAL;
+               goto fail3;
+       }
+
        return (efop->efo_add(enp, spec, B_FALSE));
 
+fail3:
+       EFSYS_PROBE(fail3);
 fail2:
        EFSYS_PROBE(fail2);
 fail1: