layerscape: add patches-5.4

[openwrt/openwrt.git] / target / linux / layerscape / patches-5.4 / 701-net-0097-sdk_dpaa-set-the-skb-queue-mapping-when-looping.patch

diff --git a/target/linux/layerscape/patches-5.4/701-net-0097-sdk_dpaa-set-the-skb-queue-mapping-when-looping.patch b/target/linux/layerscape/patches-5.4/701-net-0097-sdk_dpaa-set-the-skb-queue-mapping-when-looping.patch
new file mode 100644 (file)
index 0000000..f4a0b3e
--- /dev/null
+++ b/target/linux/layerscape/patches-5.4/701-net-0097-sdk_dpaa-set-the-skb-queue-mapping-when-looping.patch
@@ -0,0 +1,26 @@
+From ae59df58bacb7d3daf2cf736f286a368ee703778 Mon Sep 17 00:00:00 2001
+From: Camelia Groza <camelia.groza@nxp.com>
+Date: Tue, 30 Oct 2018 18:18:57 +0200
+Subject: [PATCH] sdk_dpaa: set the skb queue mapping when looping
+
+Save the current CPU ID on ingress, when FSL_DPAA_DBG_LOOP is set.
+Use the skb_set_queue_mapping() call instead of skb_record_rx_queue()
+because the stack isn't involved and won't compensate for the additional
+offset.
+
+Signed-off-by: Camelia Groza <camelia.groza@nxp.com>
+---
+ drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_sg.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+--- a/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_sg.c
++++ b/drivers/net/ethernet/freescale/sdk_dpaa/dpaa_eth_sg.c
+@@ -575,6 +575,8 @@ static inline int dpa_skb_loop(const str
+               return 0; /* loop disabled by default */
+ 
+       skb_push(skb, ETH_HLEN); /* compensate for eth_type_trans */
++      /* Save the current CPU ID in order to maintain core affinity */
++      skb_set_queue_mapping(skb, raw_smp_processor_id());
+       dpa_tx(skb, dpa_loop_netdevs[priv->loop_to]);
+ 
+       return 1; /* Frame Tx on the selected interface */