diff options
Diffstat (limited to 'target/linux/layerscape/patches-5.4/701-net-0292-staging-fsl_ppfe-eth-Avoid-packet-drop-at-TMU-queues.patch')
-rw-r--r-- | target/linux/layerscape/patches-5.4/701-net-0292-staging-fsl_ppfe-eth-Avoid-packet-drop-at-TMU-queues.patch | 87 |
1 files changed, 0 insertions, 87 deletions
diff --git a/target/linux/layerscape/patches-5.4/701-net-0292-staging-fsl_ppfe-eth-Avoid-packet-drop-at-TMU-queues.patch b/target/linux/layerscape/patches-5.4/701-net-0292-staging-fsl_ppfe-eth-Avoid-packet-drop-at-TMU-queues.patch deleted file mode 100644 index eeea3740dd..0000000000 --- a/target/linux/layerscape/patches-5.4/701-net-0292-staging-fsl_ppfe-eth-Avoid-packet-drop-at-TMU-queues.patch +++ /dev/null @@ -1,87 +0,0 @@ -From 8b99b4595d2b5f4d0b2252b16de83572e03b337a Mon Sep 17 00:00:00 2001 -From: Kavi Akhila-B46177 <akhila.kavi@nxp.com> -Date: Thu, 2 Nov 2017 12:05:35 +0530 -Subject: [PATCH] staging: fsl_ppfe/eth: Avoid packet drop at TMU queues - -Added flow control between TMU queues and PFE Linux driver, -based on TMU credits availability. -Added tx_qos module parameter to control this behavior. -Use queue-0 as default queue to transmit packets. - -Signed-off-by: Calvin Johnson <calvin.johnson@nxp.com> -Signed-off-by: Akhila Kavi <akhila.kavi@nxp.com> -Signed-off-by: Anjaneyulu Jagarlmudi <anji.jagarlmudi@nxp.com> ---- - drivers/staging/fsl_ppfe/pfe_eth.c | 17 +++++++++++++---- - drivers/staging/fsl_ppfe/pfe_hif_lib.c | 7 +++++-- - 2 files changed, 18 insertions(+), 6 deletions(-) - ---- a/drivers/staging/fsl_ppfe/pfe_eth.c -+++ b/drivers/staging/fsl_ppfe/pfe_eth.c -@@ -293,10 +293,10 @@ static int pfe_eth_sysfs_init(struct net - /* Initialize the default values */ - - /* -- * By default, packets without conntrack will use this default high -+ * By default, packets without conntrack will use this default low - * priority queue - */ -- priv->default_priority = 15; -+ priv->default_priority = 0; - - /* Create our sysfs files */ - err = device_create_file(&ndev->dev, &dev_attr_default_priority); -@@ -1566,10 +1566,17 @@ static int pfe_eth_might_stop_tx(struct - unsigned int n_segs) - { - ktime_t kt; -+ int tried = 0; - -+try_again: - if (unlikely((__hif_tx_avail(&pfe->hif) < n_desc) || -- (hif_lib_tx_avail(&priv->client, queuenum) < n_desc) || -+ (hif_lib_tx_avail(&priv->client, queuenum) < n_desc) || - (hif_lib_tx_credit_avail(pfe, priv->id, queuenum) < n_segs))) { -+ if (!tried) { -+ __hif_lib_update_credit(&priv->client, queuenum); -+ tried = 1; -+ goto try_again; -+ } - #ifdef PFE_ETH_TX_STATS - if (__hif_tx_avail(&pfe->hif) < n_desc) { - priv->stop_queue_hif[queuenum]++; -@@ -1692,8 +1699,10 @@ static void pfe_eth_flush_tx(struct pfe_ - - netif_info(priv, tx_done, priv->ndev, "%s\n", __func__); - -- for (ii = 0; ii < emac_txq_cnt; ii++) -+ for (ii = 0; ii < emac_txq_cnt; ii++) { - pfe_eth_flush_txQ(priv, ii, 0, 0); -+ __hif_lib_update_credit(&priv->client, ii); -+ } - } - - void pfe_tx_get_req_desc(struct sk_buff *skb, unsigned int *n_desc, unsigned int ---- a/drivers/staging/fsl_ppfe/pfe_hif_lib.c -+++ b/drivers/staging/fsl_ppfe/pfe_hif_lib.c -@@ -34,7 +34,10 @@ - - unsigned int lro_mode; - unsigned int page_mode; --unsigned int tx_qos; -+unsigned int tx_qos = 1; -+module_param(tx_qos, uint, 0444); -+MODULE_PARM_DESC(tx_qos, "0: disable ,\n" -+ "1: enable (default), guarantee no packet drop at TMU level\n"); - unsigned int pfe_pkt_size; - unsigned int pfe_pkt_headroom; - unsigned int emac_txq_cnt; -@@ -576,7 +579,7 @@ void __hif_lib_update_credit(struct hif_ - - if (tx_qos) { - tmu_tx_packets = be32_to_cpu(pe_dmem_read(TMU0_ID + -- client->id, TMU_DM_TX_TRANS, 4)); -+ client->id, (TMU_DM_TX_TRANS + (queue * 4)), 4)); - - /* tx_packets counter overflowed */ - if (tmu_tx_packets > |