diff options
Diffstat (limited to 'target/linux/layerscape/patches-5.4/701-net-0197-dpaa2-eth-Add-congestion-group-taildrop.patch')
| -rw-r--r-- | target/linux/layerscape/patches-5.4/701-net-0197-dpaa2-eth-Add-congestion-group-taildrop.patch | 64 |
1 files changed, 0 insertions, 64 deletions
diff --git a/target/linux/layerscape/patches-5.4/701-net-0197-dpaa2-eth-Add-congestion-group-taildrop.patch b/target/linux/layerscape/patches-5.4/701-net-0197-dpaa2-eth-Add-congestion-group-taildrop.patch deleted file mode 100644 index 9125b94351..0000000000 --- a/target/linux/layerscape/patches-5.4/701-net-0197-dpaa2-eth-Add-congestion-group-taildrop.patch +++ /dev/null @@ -1,64 +0,0 @@ -From fa204fc76c3936c55315ba9423fa7c920af2f9a9 Mon Sep 17 00:00:00 2001 -From: Ioana Radulescu <ruxandra.radulescu@nxp.com> -Date: Wed, 4 Sep 2019 20:32:56 +0300 -Subject: [PATCH] dpaa2-eth: Add congestion group taildrop - -The increase in number of ingress frame queues means we now risk -depleting the buffer pool before the FQ taildrop kicks in. - -Congestion group taildrop allows us to control the number of frames -that can accumulate on a group of Rx frame queues belonging to the -same traffic class. - -This setting coexists with the frame queue based taildrop: whichever -limit gets hit first triggers the frame drop. - -Signed-off-by: Ioana Radulescu <ruxandra.radulescu@nxp.com> ---- - drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c | 16 ++++++++++++++++ - drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.h | 9 +++++++++ - 2 files changed, 25 insertions(+) - ---- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c -+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c -@@ -1257,6 +1257,22 @@ static void dpaa2_eth_set_rx_taildrop(st - } - } - -+ /* Congestion group taildrop: threshold is in frames, per group -+ * of FQs belonging to the same traffic class -+ */ -+ td.threshold = DPAA2_ETH_CG_TAILDROP_THRESH(priv); -+ td.units = DPNI_CONGESTION_UNIT_FRAMES; -+ for (i = 0; i < dpaa2_eth_tc_count(priv); i++) { -+ err = dpni_set_taildrop(priv->mc_io, 0, priv->mc_token, -+ DPNI_CP_GROUP, DPNI_QUEUE_RX, -+ i, 0, &td); -+ if (err) { -+ netdev_err(priv->net_dev, -+ "dpni_set_taildrop(CG) failed\n"); -+ return; -+ } -+ } -+ - priv->rx_td_enabled = td.enable; - } - ---- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.h -+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.h -@@ -56,6 +56,15 @@ - #define DPAA2_ETH_REFILL_THRESH \ - (DPAA2_ETH_NUM_BUFS - DPAA2_ETH_BUFS_PER_CMD) - -+/* Congestion group taildrop threshold: number of frames allowed to accumulate -+ * at any moment in a group of Rx queues belonging to the same traffic class. -+ * Choose value such that we don't risk depleting the buffer pool before the -+ * taildrop kicks in -+ */ -+#define DPAA2_ETH_CG_TAILDROP_THRESH(priv) \ -+ (DPAA2_ETH_MAX_FRAMES_PER_QUEUE * dpaa2_eth_queue_count(priv) / \ -+ dpaa2_eth_tc_count(priv)) -+ - /* Maximum number of buffers that can be acquired/released through a single - * QBMan command - */ |