[dpdk-dev] [PATCH 1/5] common/sfc_efx/base: refine adding encap action to a set

[Ivan Malov <ivan.malov@oktetlabs.ru>]

1) Invalid encap. header ID is always set by default.
   Do not set it again when adding the action.

2) Encap. header ID validity check is missing in the
   action set allocation helper. Introduce it.

Fixes: 3907defa5bf0 ("common/sfc_efx/base: support adding encap action to a set")
Cc: stable@dpdk.org

Signed-off-by: Ivan Malov <ivan.malov@oktetlabs.ru>
Reviewed-by: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>
Reviewed-by: Andy Moreton <amoreton@xilinx.com>
---
 drivers/common/sfc_efx/base/efx_mae.c | 27 ++++++++++++++++-----------
 1 file changed, 16 insertions(+), 11 deletions(-)

diff --git a/drivers/common/sfc_efx/base/efx_mae.c b/drivers/common/sfc_efx/base/efx_mae.c
index 154b6e1cdd..542c345b76 100644
--- a/drivers/common/sfc_efx/base/efx_mae.c
+++ b/drivers/common/sfc_efx/base/efx_mae.c
@@ -1525,16 +1525,13 @@ efx_mae_action_set_add_encap(
 	 * needs to check the order of actions submitted by user ("validate"),
 	 * without actually allocating an action set and inserting a rule.
 	 *
-	 * For now, mark encap. header ID as invalid; the caller will invoke
-	 * efx_mae_action_set_fill_in_eh_id() to override the field prior
-	 * to action set allocation; otherwise, the allocation will fail.
+	 * In order to fill in the encap. header ID, the caller is supposed to
+	 * invoke efx_mae_action_set_fill_in_eh_id(). If they do not do that,
+	 * efx_mae_action_set_alloc() invocation will throw an error.
+	 *
+	 * For now, no more work is supposed to be done.
 	 */
-	spec->ema_rsrc.emar_eh_id.id = EFX_MAE_RSRC_ID_INVALID;
 
-	/*
-	 * As explained above, there are no arguments to handle here.
-	 * efx_mae_action_set_fill_in_eh_id() will take care of them.
-	 */
 	if (arg_size != 0) {
 		rc = EINVAL;
 		goto fail1;
@@ -2582,6 +2579,12 @@ efx_mae_action_set_alloc(
 		goto fail1;
 	}
 
+	if ((spec->ema_actions & (1U << EFX_MAE_ACTION_ENCAP)) != 0 &&
+	    spec->ema_rsrc.emar_eh_id.id == EFX_MAE_RSRC_ID_INVALID) {
+		rc = EINVAL;
+		goto fail2;
+	}
+
 	req.emr_cmd = MC_CMD_MAE_ACTION_SET_ALLOC;
 	req.emr_in_buf = payload;
 	req.emr_in_length = MC_CMD_MAE_ACTION_SET_ALLOC_IN_LEN;
@@ -2659,24 +2662,26 @@ efx_mae_action_set_alloc(
 
 	if (req.emr_rc != 0) {
 		rc = req.emr_rc;
-		goto fail2;
+		goto fail3;
 	}
 
 	if (req.emr_out_length_used < MC_CMD_MAE_ACTION_SET_ALLOC_OUT_LEN) {
 		rc = EMSGSIZE;
-		goto fail3;
+		goto fail4;
 	}
 
 	aset_id.id = MCDI_OUT_DWORD(req, MAE_ACTION_SET_ALLOC_OUT_AS_ID);
 	if (aset_id.id == EFX_MAE_RSRC_ID_INVALID) {
 		rc = ENOENT;
-		goto fail4;
+		goto fail5;
 	}
 
 	aset_idp->id = aset_id.id;
 
 	return (0);
 
+fail5:
+	EFSYS_PROBE(fail5);
 fail4:
 	EFSYS_PROBE(fail4);
 fail3:
-- 
2.30.2