netdev - [PATCH net v1 2/2] ice: Fix ice_cfg_rdma_fltr() to only update relevant fields

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Message-Id: <20230313203608.1680781-3-jesse.brandeburg@intel.com>
Date:   Mon, 13 Mar 2023 13:36:08 -0700
From:   Jesse Brandeburg <jesse.brandeburg@...el.com>
To:     intel-wired-lan@...ts.osuosl.org
Cc:     netdev@...r.kernel.org, Brett Creeley <brett.creeley@...el.com>,
        Robert Malz <robertx.malz@...el.com>,
        Jesse Brandeburg <jesse.brandeburg@...el.com>,
        Piotr Raczynski <piotr.raczynski@...el.com>
Subject: [PATCH net v1 2/2] ice: Fix ice_cfg_rdma_fltr() to only update relevant fields

From: Brett Creeley <brett.creeley@...el.com>

The current implementation causes ice_vsi_update() to update all VSI
fields based on the cached VSI context. This also assumes that the
ICE_AQ_VSI_PROP_Q_OPT_VALID bit is set. This can cause problems if the
VSI context is not correctly synced by the driver. Fix this by only
updating the fields that correspond to ICE_AQ_VSI_PROP_Q_OPT_VALID.
Also, make sure to save the updated result in the cached VSI context
on success.

Fixes: 348048e724a0 ("ice: Implement iidc operations")
Co-developed-by: Robert Malz <robertx.malz@...el.com>
Signed-off-by: Robert Malz <robertx.malz@...el.com>
Signed-off-by: Brett Creeley <brett.creeley@...el.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@...el.com>
Reviewed-by: Piotr Raczynski <piotr.raczynski@...el.com>
---
 drivers/net/ethernet/intel/ice/ice_switch.c | 26 +++++++++++++++++----
 1 file changed, 22 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/intel/ice/ice_switch.c b/drivers/net/ethernet/intel/ice/ice_switch.c
index 61f844d22512..46b36851af46 100644
--- a/drivers/net/ethernet/intel/ice/ice_switch.c
+++ b/drivers/net/ethernet/intel/ice/ice_switch.c
@@ -1780,18 +1780,36 @@ ice_update_vsi(struct ice_hw *hw, u16 vsi_handle, struct ice_vsi_ctx *vsi_ctx,
 int
 ice_cfg_rdma_fltr(struct ice_hw *hw, u16 vsi_handle, bool enable)
 {
-	struct ice_vsi_ctx *ctx;
+	struct ice_vsi_ctx *ctx, *cached_ctx;
+	int status;
+
+	cached_ctx = ice_get_vsi_ctx(hw, vsi_handle);
+	if (!cached_ctx)
+		return -ENOENT;
 
-	ctx = ice_get_vsi_ctx(hw, vsi_handle);
+	ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
 	if (!ctx)
-		return -EIO;
+		return -ENOMEM;
+
+	ctx->info.q_opt_rss = cached_ctx->info.q_opt_rss;
+	ctx->info.q_opt_tc = cached_ctx->info.q_opt_tc;
+	ctx->info.q_opt_flags = cached_ctx->info.q_opt_flags;
+
+	ctx->info.valid_sections = cpu_to_le16(ICE_AQ_VSI_PROP_Q_OPT_VALID);
 
 	if (enable)
 		ctx->info.q_opt_flags |= ICE_AQ_VSI_Q_OPT_PE_FLTR_EN;
 	else
 		ctx->info.q_opt_flags &= ~ICE_AQ_VSI_Q_OPT_PE_FLTR_EN;
 
-	return ice_update_vsi(hw, vsi_handle, ctx, NULL);
+	status = ice_update_vsi(hw, vsi_handle, ctx, NULL);
+	if (!status) {
+		cached_ctx->info.q_opt_flags = ctx->info.q_opt_flags;
+		cached_ctx->info.valid_sections |= ctx->info.valid_sections;
+	}
+
+	kfree(ctx);
+	return status;
 }
 
 /**
-- 
2.39.2