diff options
Diffstat (limited to 'target/linux/layerscape/patches-5.4/701-net-0204-dpaa2-eth-Add-Tx-shaping-support.patch')
| -rw-r--r-- | target/linux/layerscape/patches-5.4/701-net-0204-dpaa2-eth-Add-Tx-shaping-support.patch | 142 |
1 files changed, 0 insertions, 142 deletions
diff --git a/target/linux/layerscape/patches-5.4/701-net-0204-dpaa2-eth-Add-Tx-shaping-support.patch b/target/linux/layerscape/patches-5.4/701-net-0204-dpaa2-eth-Add-Tx-shaping-support.patch deleted file mode 100644 index 4974362d71..0000000000 --- a/target/linux/layerscape/patches-5.4/701-net-0204-dpaa2-eth-Add-Tx-shaping-support.patch +++ /dev/null @@ -1,142 +0,0 @@ -From ef0cc7d01f3eeca37c6bf864903af1c0cf0a792d Mon Sep 17 00:00:00 2001 -From: Ioana Radulescu <ruxandra.radulescu@nxp.com> -Date: Fri, 5 May 2017 18:11:08 +0300 -Subject: [PATCH] dpaa2-eth: Add Tx shaping support - -Add support in sysfs for controlling DPNI Tx shaping -parameters: rate limit (in Mbps) and max burst size (in bytes). -The settings are per port. - -TODO: See how to integrate Tx shaping support using -standard Linux tools (ethtool) - -Signed-off-by: Ioana Radulescu <ruxandra.radulescu@nxp.com> -Signed-off-by: Bogdan Purcareata <bogdan.purcareata@nxp.com> ---- - drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c | 80 ++++++++++++++++++++++++ - drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.h | 4 ++ - 2 files changed, 84 insertions(+) - ---- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c -+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c -@@ -3778,6 +3778,83 @@ const struct dcbnl_rtnl_ops dpaa2_eth_dc - }; - #endif - -+/* SysFS support */ -+static ssize_t dpaa2_eth_show_tx_shaping(struct device *dev, -+ struct device_attribute *attr, -+ char *buf) -+{ -+ struct dpaa2_eth_priv *priv = netdev_priv(to_net_dev(dev)); -+ /* No MC API for getting the shaping config. We're stateful. */ -+ struct dpni_tx_shaping_cfg *scfg = &priv->shaping_cfg; -+ -+ return sprintf(buf, "%u %hu\n", scfg->rate_limit, scfg->max_burst_size); -+} -+ -+static ssize_t dpaa2_eth_write_tx_shaping(struct device *dev, -+ struct device_attribute *attr, -+ const char *buf, -+ size_t count) -+{ -+ int err, items; -+ struct dpaa2_eth_priv *priv = netdev_priv(to_net_dev(dev)); -+ struct dpni_tx_shaping_cfg scfg; -+ -+ items = sscanf(buf, "%u %hu", &scfg.rate_limit, &scfg.max_burst_size); -+ if (items != 2) { -+ pr_err("Expected format: \"rate_limit(Mbps) max_burst_size(bytes)\"\n"); -+ return -EINVAL; -+ } -+ /* Size restriction as per MC API documentation */ -+ if (scfg.max_burst_size > DPAA2_ETH_MAX_BURST_SIZE) { -+ pr_err("max_burst_size must be <= %d\n", -+ DPAA2_ETH_MAX_BURST_SIZE); -+ return -EINVAL; -+ } -+ -+ err = dpni_set_tx_shaping(priv->mc_io, 0, priv->mc_token, &scfg); -+ if (err) { -+ dev_err(dev, "dpni_set_tx_shaping() failed\n"); -+ return -EPERM; -+ } -+ /* If successful, save the current configuration for future inquiries */ -+ priv->shaping_cfg = scfg; -+ -+ return count; -+} -+ -+static struct device_attribute dpaa2_eth_attrs[] = { -+ __ATTR(tx_shaping, -+ 0600, -+ dpaa2_eth_show_tx_shaping, -+ dpaa2_eth_write_tx_shaping), -+}; -+ -+static void dpaa2_eth_sysfs_init(struct device *dev) -+{ -+ int i, err; -+ -+ for (i = 0; i < ARRAY_SIZE(dpaa2_eth_attrs); i++) { -+ err = device_create_file(dev, &dpaa2_eth_attrs[i]); -+ if (err) { -+ dev_err(dev, "ERROR creating sysfs file\n"); -+ goto undo; -+ } -+ } -+ return; -+ -+undo: -+ while (i > 0) -+ device_remove_file(dev, &dpaa2_eth_attrs[--i]); -+} -+ -+static void dpaa2_eth_sysfs_remove(struct device *dev) -+{ -+ int i; -+ -+ for (i = 0; i < ARRAY_SIZE(dpaa2_eth_attrs); i++) -+ device_remove_file(dev, &dpaa2_eth_attrs[i]); -+} -+ - static int dpaa2_eth_probe(struct fsl_mc_device *dpni_dev) - { - struct device *dev; -@@ -3897,6 +3974,7 @@ static int dpaa2_eth_probe(struct fsl_mc - #ifdef CONFIG_DEBUG_FS - dpaa2_dbg_add(priv); - #endif -+ dpaa2_eth_sysfs_init(&net_dev->dev); - - dev_info(dev, "Probed interface %s\n", net_dev->name); - return 0; -@@ -3944,6 +4022,8 @@ static int dpaa2_eth_remove(struct fsl_m - #ifdef CONFIG_DEBUG_FS - dpaa2_dbg_remove(priv); - #endif -+ dpaa2_eth_sysfs_remove(&net_dev->dev); -+ - unregister_netdev(net_dev); - - if (priv->do_link_poll) ---- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.h -+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.h -@@ -42,6 +42,9 @@ - */ - #define DPAA2_ETH_FQ_TAILDROP_THRESH (1024 * 1024) - -+/* Maximum burst size value for Tx shaping */ -+#define DPAA2_ETH_MAX_BURST_SIZE 0xF7FF -+ - /* Maximum number of Tx confirmation frames to be processed - * in a single NAPI call - */ -@@ -445,6 +448,7 @@ struct dpaa2_eth_priv { - #ifdef CONFIG_DEBUG_FS - struct dpaa2_debugfs dbg; - #endif -+ struct dpni_tx_shaping_cfg shaping_cfg; - }; - - #define DPAA2_RXH_SUPPORTED (RXH_L2DA | RXH_VLAN | RXH_L3_PROTO \ |