diff options
Diffstat (limited to 'target/linux/layerscape/patches-5.4/701-net-0200-dpaa2-eth-Enable-Rx-PFC.patch')
| -rw-r--r-- | target/linux/layerscape/patches-5.4/701-net-0200-dpaa2-eth-Enable-Rx-PFC.patch | 86 |
1 files changed, 0 insertions, 86 deletions
diff --git a/target/linux/layerscape/patches-5.4/701-net-0200-dpaa2-eth-Enable-Rx-PFC.patch b/target/linux/layerscape/patches-5.4/701-net-0200-dpaa2-eth-Enable-Rx-PFC.patch deleted file mode 100644 index 4396f2ea8e..0000000000 --- a/target/linux/layerscape/patches-5.4/701-net-0200-dpaa2-eth-Enable-Rx-PFC.patch +++ /dev/null @@ -1,86 +0,0 @@ -From 7a342f60e569047e1632f6af91f503993769a2ec Mon Sep 17 00:00:00 2001 -From: Ioana Radulescu <ruxandra.radulescu@nxp.com> -Date: Tue, 17 Sep 2019 19:51:15 +0300 -Subject: [PATCH] dpaa2-eth: Enable Rx PFC - -Instruct the hardware to respond to received PFC frames. - -Current firmware doesn't allow us to selectively enable PFC -on the Rx side for some priorities only, so we will react to -all incoming PFC frames (and stop transmitting on the traffic -classes specified in the frame). - -PFC depends on the PAUSE flag also being set in link options. -Don't set it implicitly when user configures PFC, but issue -a warning if the two settings are not in sync. - -For the Tx side, setting the PFC_PAUSE flag in the link options -is necessary but not sufficient, so PFC frame generation is -not enabled yet. - -Signed-off-by: Ioana Radulescu <ruxandra.radulescu@nxp.com> ---- - drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c | 23 +++++++++++++++++++++++ - drivers/net/ethernet/freescale/dpaa2/dpni.h | 5 +++++ - 2 files changed, 28 insertions(+) - ---- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c -+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c -@@ -3620,6 +3620,9 @@ static int dpaa2_eth_dcbnl_ieee_getpfc(s - { - struct dpaa2_eth_priv *priv = netdev_priv(net_dev); - -+ if (!(priv->link_state.options & DPNI_LINK_OPT_PFC_PAUSE)) -+ return 0; -+ - memcpy(pfc, &priv->pfc, sizeof(priv->pfc)); - pfc->pfc_cap = dpaa2_eth_tc_count(priv); - -@@ -3630,6 +3633,8 @@ static int dpaa2_eth_dcbnl_ieee_setpfc(s - struct ieee_pfc *pfc) - { - struct dpaa2_eth_priv *priv = netdev_priv(net_dev); -+ struct dpni_link_cfg link_cfg = {0}; -+ int err; - - if (pfc->mbc || pfc->delay) - return -EOPNOTSUPP; -@@ -3638,6 +3643,24 @@ static int dpaa2_eth_dcbnl_ieee_setpfc(s - if (priv->pfc.pfc_en == pfc->pfc_en) - return 0; - -+ /* We allow PFC configuration even if it won't have any effect until -+ * general pause frames are enabled -+ */ -+ if (!dpaa2_eth_rx_pause_enabled(priv->link_state.options)) -+ netdev_warn(net_dev, "Pause support must be enabled in order for PFC to work!\n"); -+ -+ link_cfg.rate = priv->link_state.rate; -+ link_cfg.options = priv->link_state.options; -+ if (pfc->pfc_en) -+ link_cfg.options |= DPNI_LINK_OPT_PFC_PAUSE; -+ else -+ link_cfg.options &= ~DPNI_LINK_OPT_PFC_PAUSE; -+ err = dpni_set_link_cfg(priv->mc_io, 0, priv->mc_token, &link_cfg); -+ if (err) { -+ netdev_err(net_dev, "dpni_set_link_cfg failed\n"); -+ return err; -+ } -+ - memcpy(&priv->pfc, pfc, sizeof(priv->pfc)); - - return 0; ---- a/drivers/net/ethernet/freescale/dpaa2/dpni.h -+++ b/drivers/net/ethernet/freescale/dpaa2/dpni.h -@@ -514,6 +514,11 @@ int dpni_get_statistics(struct fsl_mc_io - #define DPNI_LINK_OPT_ASYM_PAUSE 0x0000000000000008ULL - - /** -+ * Enable priority flow control pause frames -+ */ -+#define DPNI_LINK_OPT_PFC_PAUSE 0x0000000000000010ULL -+ -+/** - * struct - Structure representing DPNI link configuration - * @rate: Rate - * @options: Mask of available options; use 'DPNI_LINK_OPT_<X>' values |