X-Git-Url: http://git.openwrt.org/?a=blobdiff_plain;f=target%2Flinux%2Farmsr%2Fpatches-6.1%2F701-v6.2-0007-net-dpaa2-publish-MAC-stringset-to-ethtool-S-even-if.patch;fp=target%2Flinux%2Farmsr%2Fpatches-6.1%2F701-v6.2-0007-net-dpaa2-publish-MAC-stringset-to-ethtool-S-even-if.patch;h=0000000000000000000000000000000000000000;hb=f125e38ced28d9e673480732df51f0b24f280e93;hp=c790ba1bd50680fb0fe40d8b2f06260f024805c3;hpb=bd6852185b7c7362fc5485afa961c686d9cd74b4;p=openwrt%2Fstaging%2Fstintel.git diff --git a/target/linux/armsr/patches-6.1/701-v6.2-0007-net-dpaa2-publish-MAC-stringset-to-ethtool-S-even-if.patch b/target/linux/armsr/patches-6.1/701-v6.2-0007-net-dpaa2-publish-MAC-stringset-to-ethtool-S-even-if.patch deleted file mode 100644 index c790ba1bd5..0000000000 --- a/target/linux/armsr/patches-6.1/701-v6.2-0007-net-dpaa2-publish-MAC-stringset-to-ethtool-S-even-if.patch +++ /dev/null @@ -1,111 +0,0 @@ -From ce44b6ed9ee65efa9b3025552c513842eabcab88 Mon Sep 17 00:00:00 2001 -From: Vladimir Oltean -Date: Tue, 29 Nov 2022 16:12:16 +0200 -Subject: [PATCH 09/14] net: dpaa2: publish MAC stringset to ethtool -S even if - MAC is missing - -DPNIs and DPSW objects can connect and disconnect at runtime from DPMAC -objects on the same fsl-mc bus. The DPMAC object also holds "ethtool -S" -unstructured counters. Those counters are only shown for the entity -owning the netdev (DPNI, DPSW) if it's connected to a DPMAC. - -The ethtool stringset code path is split into multiple callbacks, but -currently, connecting and disconnecting the DPMAC takes the rtnl_lock(). -This blocks the entire ethtool code path from running, see -ethnl_default_doit() -> rtnl_lock() -> ops->prepare_data() -> -strset_prepare_data(). - -This is going to be a problem if we are going to no longer require -rtnl_lock() when connecting/disconnecting the DPMAC, because the DPMAC -could appear between ops->get_sset_count() and ops->get_strings(). -If it appears out of the blue, we will provide a stringset into an array -that was dimensioned thinking the DPMAC wouldn't be there => array -accessed out of bounds. - -There isn't really a good way to work around that, and I don't want to -put too much pressure on the ethtool framework by playing locking games. -Just make the DPMAC counters be always available. They'll be zeroes if -the DPNI or DPSW isn't connected to a DPMAC. - -Signed-off-by: Vladimir Oltean -Reviewed-by: Andrew Lunn -Reviewed-by: Ioana Ciornei -Tested-by: Ioana Ciornei -Signed-off-by: Paolo Abeni ---- - drivers/net/ethernet/freescale/dpaa2/dpaa2-ethtool.c | 12 +++--------- - .../ethernet/freescale/dpaa2/dpaa2-switch-ethtool.c | 11 ++--------- - 2 files changed, 5 insertions(+), 18 deletions(-) - ---- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-ethtool.c -+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-ethtool.c -@@ -186,7 +186,6 @@ static int dpaa2_eth_set_pauseparam(stru - static void dpaa2_eth_get_strings(struct net_device *netdev, u32 stringset, - u8 *data) - { -- struct dpaa2_eth_priv *priv = netdev_priv(netdev); - u8 *p = data; - int i; - -@@ -200,22 +199,17 @@ static void dpaa2_eth_get_strings(struct - strscpy(p, dpaa2_ethtool_extras[i], ETH_GSTRING_LEN); - p += ETH_GSTRING_LEN; - } -- if (dpaa2_eth_has_mac(priv)) -- dpaa2_mac_get_strings(p); -+ dpaa2_mac_get_strings(p); - break; - } - } - - static int dpaa2_eth_get_sset_count(struct net_device *net_dev, int sset) - { -- int num_ss_stats = DPAA2_ETH_NUM_STATS + DPAA2_ETH_NUM_EXTRA_STATS; -- struct dpaa2_eth_priv *priv = netdev_priv(net_dev); -- - switch (sset) { - case ETH_SS_STATS: /* ethtool_get_stats(), ethtool_get_drvinfo() */ -- if (dpaa2_eth_has_mac(priv)) -- num_ss_stats += dpaa2_mac_get_sset_count(); -- return num_ss_stats; -+ return DPAA2_ETH_NUM_STATS + DPAA2_ETH_NUM_EXTRA_STATS + -+ dpaa2_mac_get_sset_count(); - default: - return -EOPNOTSUPP; - } ---- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch-ethtool.c -+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch-ethtool.c -@@ -145,14 +145,9 @@ dpaa2_switch_set_link_ksettings(struct n - static int - dpaa2_switch_ethtool_get_sset_count(struct net_device *netdev, int sset) - { -- struct ethsw_port_priv *port_priv = netdev_priv(netdev); -- int num_ss_stats = DPAA2_SWITCH_NUM_COUNTERS; -- - switch (sset) { - case ETH_SS_STATS: -- if (port_priv->mac) -- num_ss_stats += dpaa2_mac_get_sset_count(); -- return num_ss_stats; -+ return DPAA2_SWITCH_NUM_COUNTERS + dpaa2_mac_get_sset_count(); - default: - return -EOPNOTSUPP; - } -@@ -161,7 +156,6 @@ dpaa2_switch_ethtool_get_sset_count(stru - static void dpaa2_switch_ethtool_get_strings(struct net_device *netdev, - u32 stringset, u8 *data) - { -- struct ethsw_port_priv *port_priv = netdev_priv(netdev); - u8 *p = data; - int i; - -@@ -172,8 +166,7 @@ static void dpaa2_switch_ethtool_get_str - ETH_GSTRING_LEN); - p += ETH_GSTRING_LEN; - } -- if (port_priv->mac) -- dpaa2_mac_get_strings(p); -+ dpaa2_mac_get_strings(p); - break; - } - }