From: Vladimir Oltean <olteanv@gmail.com> To: Jakub Kicinski <kuba@kernel.org>, "David S. Miller" <davem@davemloft.net> Cc: Andrew Lunn <andrew@lunn.ch>, Vivien Didelot <vivien.didelot@gmail.com>, Florian Fainelli <f.fainelli@gmail.com>, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, bridge@lists.linux-foundation.org, Roopa Prabhu <roopa@nvidia.com>, Nikolay Aleksandrov <nikolay@nvidia.com>, Jiri Pirko <jiri@resnulli.us>, Ido Schimmel <idosch@idosch.org>, Claudiu Manoil <claudiu.manoil@nxp.com>, Alexandre Belloni <alexandre.belloni@bootlin.com>, UNGLinuxDriver@microchip.com, Vadym Kochan <vkochan@marvell.com>, Taras Chornyi <tchornyi@marvell.com>, Grygorii Strashko <grygorii.strashko@ti.com>, Vignesh Raghavendra <vigneshr@ti.com>, Ioana Ciornei <ioana.ciornei@nxp.com>, Ivan Vecera <ivecera@redhat.com>, linux-omap@vger.kernel.org Subject: [PATCH v5 net-next 02/10] net: bridge: offload all port flags at once in br_setport Date: Fri, 12 Feb 2021 17:15:52 +0200 [thread overview] Message-ID: <20210212151600.3357121-3-olteanv@gmail.com> (raw) In-Reply-To: <20210212151600.3357121-1-olteanv@gmail.com> From: Vladimir Oltean <vladimir.oltean@nxp.com> If for example this command: ip link set swp0 type bridge_slave flood off mcast_flood off learning off succeeded at configuring BR_FLOOD and BR_MCAST_FLOOD but not at BR_LEARNING, there would be no attempt to revert the partial state in any way. Arguably, if the user changes more than one flag through the same netlink command, this one _should_ be all or nothing, which means it should be passed through switchdev as all or nothing. Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> --- Changes in v5: None. Changes in v4: Leave br->lock alone completely. Changes in v3: Don't attempt to drop br->lock around br_switchdev_set_port_flag now, move that part to a later patch. Changes in v2: Patch is new. Changes in v2: Patch is new. net/bridge/br_netlink.c | 109 ++++++++++++-------------------------- net/bridge/br_switchdev.c | 6 ++- 2 files changed, 39 insertions(+), 76 deletions(-) diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c index bd3962da345a..bf469f824944 100644 --- a/net/bridge/br_netlink.c +++ b/net/bridge/br_netlink.c @@ -853,87 +853,58 @@ static int br_set_port_state(struct net_bridge_port *p, u8 state) } /* Set/clear or port flags based on attribute */ -static int br_set_port_flag(struct net_bridge_port *p, struct nlattr *tb[], - int attrtype, unsigned long mask) +static void br_set_port_flag(struct net_bridge_port *p, struct nlattr *tb[], + int attrtype, unsigned long mask) { - unsigned long flags; - int err; - if (!tb[attrtype]) - return 0; + return; if (nla_get_u8(tb[attrtype])) - flags = p->flags | mask; + p->flags |= mask; else - flags = p->flags & ~mask; - - err = br_switchdev_set_port_flag(p, flags, mask); - if (err) - return err; - - p->flags = flags; - return 0; + p->flags &= ~mask; } /* Process bridge protocol info on port */ static int br_setport(struct net_bridge_port *p, struct nlattr *tb[]) { - unsigned long old_flags = p->flags; - bool br_vlan_tunnel_old = false; + unsigned long old_flags, changed_mask; + bool br_vlan_tunnel_old; int err; - err = br_set_port_flag(p, tb, IFLA_BRPORT_MODE, BR_HAIRPIN_MODE); - if (err) - return err; - - err = br_set_port_flag(p, tb, IFLA_BRPORT_GUARD, BR_BPDU_GUARD); - if (err) - return err; - - err = br_set_port_flag(p, tb, IFLA_BRPORT_FAST_LEAVE, BR_MULTICAST_FAST_LEAVE); - if (err) - return err; - - err = br_set_port_flag(p, tb, IFLA_BRPORT_PROTECT, BR_ROOT_BLOCK); - if (err) - return err; - - err = br_set_port_flag(p, tb, IFLA_BRPORT_LEARNING, BR_LEARNING); - if (err) - return err; - - err = br_set_port_flag(p, tb, IFLA_BRPORT_UNICAST_FLOOD, BR_FLOOD); - if (err) - return err; - - err = br_set_port_flag(p, tb, IFLA_BRPORT_MCAST_FLOOD, BR_MCAST_FLOOD); - if (err) - return err; - - err = br_set_port_flag(p, tb, IFLA_BRPORT_MCAST_TO_UCAST, BR_MULTICAST_TO_UNICAST); - if (err) - return err; - - err = br_set_port_flag(p, tb, IFLA_BRPORT_BCAST_FLOOD, BR_BCAST_FLOOD); - if (err) - return err; - - err = br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP, BR_PROXYARP); - if (err) - return err; - - err = br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP_WIFI, BR_PROXYARP_WIFI); - if (err) - return err; - - br_vlan_tunnel_old = (p->flags & BR_VLAN_TUNNEL) ? true : false; - err = br_set_port_flag(p, tb, IFLA_BRPORT_VLAN_TUNNEL, BR_VLAN_TUNNEL); - if (err) + old_flags = p->flags; + br_vlan_tunnel_old = (old_flags & BR_VLAN_TUNNEL) ? true : false; + + br_set_port_flag(p, tb, IFLA_BRPORT_MODE, BR_HAIRPIN_MODE); + br_set_port_flag(p, tb, IFLA_BRPORT_GUARD, BR_BPDU_GUARD); + br_set_port_flag(p, tb, IFLA_BRPORT_FAST_LEAVE, + BR_MULTICAST_FAST_LEAVE); + br_set_port_flag(p, tb, IFLA_BRPORT_PROTECT, BR_ROOT_BLOCK); + br_set_port_flag(p, tb, IFLA_BRPORT_LEARNING, BR_LEARNING); + br_set_port_flag(p, tb, IFLA_BRPORT_UNICAST_FLOOD, BR_FLOOD); + br_set_port_flag(p, tb, IFLA_BRPORT_MCAST_FLOOD, BR_MCAST_FLOOD); + br_set_port_flag(p, tb, IFLA_BRPORT_MCAST_TO_UCAST, + BR_MULTICAST_TO_UNICAST); + br_set_port_flag(p, tb, IFLA_BRPORT_BCAST_FLOOD, BR_BCAST_FLOOD); + br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP, BR_PROXYARP); + br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP_WIFI, BR_PROXYARP_WIFI); + br_set_port_flag(p, tb, IFLA_BRPORT_VLAN_TUNNEL, BR_VLAN_TUNNEL); + br_set_port_flag(p, tb, IFLA_BRPORT_NEIGH_SUPPRESS, BR_NEIGH_SUPPRESS); + br_set_port_flag(p, tb, IFLA_BRPORT_ISOLATED, BR_ISOLATED); + + changed_mask = old_flags ^ p->flags; + + err = br_switchdev_set_port_flag(p, p->flags, changed_mask); + if (err) { + p->flags = old_flags; return err; + } if (br_vlan_tunnel_old && !(p->flags & BR_VLAN_TUNNEL)) nbp_vlan_tunnel_info_flush(p); + br_port_flags_change(p, changed_mask); + if (tb[IFLA_BRPORT_COST]) { err = br_stp_set_path_cost(p, nla_get_u32(tb[IFLA_BRPORT_COST])); if (err) @@ -982,15 +953,6 @@ static int br_setport(struct net_bridge_port *p, struct nlattr *tb[]) p->group_fwd_mask = fwd_mask; } - err = br_set_port_flag(p, tb, IFLA_BRPORT_NEIGH_SUPPRESS, - BR_NEIGH_SUPPRESS); - if (err) - return err; - - err = br_set_port_flag(p, tb, IFLA_BRPORT_ISOLATED, BR_ISOLATED); - if (err) - return err; - if (tb[IFLA_BRPORT_BACKUP_PORT]) { struct net_device *backup_dev = NULL; u32 backup_ifindex; @@ -1008,7 +970,6 @@ static int br_setport(struct net_bridge_port *p, struct nlattr *tb[]) return err; } - br_port_flags_change(p, old_flags ^ p->flags); return 0; } diff --git a/net/bridge/br_switchdev.c b/net/bridge/br_switchdev.c index a9c23ef83443..6a9db6aa5c04 100644 --- a/net/bridge/br_switchdev.c +++ b/net/bridge/br_switchdev.c @@ -65,16 +65,18 @@ int br_switchdev_set_port_flag(struct net_bridge_port *p, struct switchdev_attr attr = { .orig_dev = p->dev, .id = SWITCHDEV_ATTR_ID_PORT_PRE_BRIDGE_FLAGS, - .u.brport_flags = mask, }; struct switchdev_notifier_port_attr_info info = { .attr = &attr, }; int err; - if (mask & ~BR_PORT_FLAGS_HW_OFFLOAD) + mask &= BR_PORT_FLAGS_HW_OFFLOAD; + if (!mask) return 0; + attr.u.brport_flags = mask; + /* We run from atomic context here */ err = call_switchdev_notifiers(SWITCHDEV_PORT_ATTR_SET, p->dev, &info.info, NULL); -- 2.25.1
WARNING: multiple messages have this Message-ID (diff)
From: Vladimir Oltean <olteanv@gmail.com> To: Jakub Kicinski <kuba@kernel.org>, "David S. Miller" <davem@davemloft.net> Cc: Ivan Vecera <ivecera@redhat.com>, Andrew Lunn <andrew@lunn.ch>, Alexandre Belloni <alexandre.belloni@bootlin.com>, Florian Fainelli <f.fainelli@gmail.com>, Jiri Pirko <jiri@resnulli.us>, Vignesh Raghavendra <vigneshr@ti.com>, Vadym Kochan <vkochan@marvell.com>, netdev@vger.kernel.org, bridge@lists.linux-foundation.org, Ioana Ciornei <ioana.ciornei@nxp.com>, linux-kernel@vger.kernel.org, UNGLinuxDriver@microchip.com, Taras Chornyi <tchornyi@marvell.com>, Ido Schimmel <idosch@idosch.org>, Claudiu Manoil <claudiu.manoil@nxp.com>, Grygorii Strashko <grygorii.strashko@ti.com>, Nikolay Aleksandrov <nikolay@nvidia.com>, Roopa Prabhu <roopa@nvidia.com>, linux-omap@vger.kernel.org, Vivien Didelot <vivien.didelot@gmail.com> Subject: [Bridge] [PATCH v5 net-next 02/10] net: bridge: offload all port flags at once in br_setport Date: Fri, 12 Feb 2021 17:15:52 +0200 [thread overview] Message-ID: <20210212151600.3357121-3-olteanv@gmail.com> (raw) In-Reply-To: <20210212151600.3357121-1-olteanv@gmail.com> From: Vladimir Oltean <vladimir.oltean@nxp.com> If for example this command: ip link set swp0 type bridge_slave flood off mcast_flood off learning off succeeded at configuring BR_FLOOD and BR_MCAST_FLOOD but not at BR_LEARNING, there would be no attempt to revert the partial state in any way. Arguably, if the user changes more than one flag through the same netlink command, this one _should_ be all or nothing, which means it should be passed through switchdev as all or nothing. Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> --- Changes in v5: None. Changes in v4: Leave br->lock alone completely. Changes in v3: Don't attempt to drop br->lock around br_switchdev_set_port_flag now, move that part to a later patch. Changes in v2: Patch is new. Changes in v2: Patch is new. net/bridge/br_netlink.c | 109 ++++++++++++-------------------------- net/bridge/br_switchdev.c | 6 ++- 2 files changed, 39 insertions(+), 76 deletions(-) diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c index bd3962da345a..bf469f824944 100644 --- a/net/bridge/br_netlink.c +++ b/net/bridge/br_netlink.c @@ -853,87 +853,58 @@ static int br_set_port_state(struct net_bridge_port *p, u8 state) } /* Set/clear or port flags based on attribute */ -static int br_set_port_flag(struct net_bridge_port *p, struct nlattr *tb[], - int attrtype, unsigned long mask) +static void br_set_port_flag(struct net_bridge_port *p, struct nlattr *tb[], + int attrtype, unsigned long mask) { - unsigned long flags; - int err; - if (!tb[attrtype]) - return 0; + return; if (nla_get_u8(tb[attrtype])) - flags = p->flags | mask; + p->flags |= mask; else - flags = p->flags & ~mask; - - err = br_switchdev_set_port_flag(p, flags, mask); - if (err) - return err; - - p->flags = flags; - return 0; + p->flags &= ~mask; } /* Process bridge protocol info on port */ static int br_setport(struct net_bridge_port *p, struct nlattr *tb[]) { - unsigned long old_flags = p->flags; - bool br_vlan_tunnel_old = false; + unsigned long old_flags, changed_mask; + bool br_vlan_tunnel_old; int err; - err = br_set_port_flag(p, tb, IFLA_BRPORT_MODE, BR_HAIRPIN_MODE); - if (err) - return err; - - err = br_set_port_flag(p, tb, IFLA_BRPORT_GUARD, BR_BPDU_GUARD); - if (err) - return err; - - err = br_set_port_flag(p, tb, IFLA_BRPORT_FAST_LEAVE, BR_MULTICAST_FAST_LEAVE); - if (err) - return err; - - err = br_set_port_flag(p, tb, IFLA_BRPORT_PROTECT, BR_ROOT_BLOCK); - if (err) - return err; - - err = br_set_port_flag(p, tb, IFLA_BRPORT_LEARNING, BR_LEARNING); - if (err) - return err; - - err = br_set_port_flag(p, tb, IFLA_BRPORT_UNICAST_FLOOD, BR_FLOOD); - if (err) - return err; - - err = br_set_port_flag(p, tb, IFLA_BRPORT_MCAST_FLOOD, BR_MCAST_FLOOD); - if (err) - return err; - - err = br_set_port_flag(p, tb, IFLA_BRPORT_MCAST_TO_UCAST, BR_MULTICAST_TO_UNICAST); - if (err) - return err; - - err = br_set_port_flag(p, tb, IFLA_BRPORT_BCAST_FLOOD, BR_BCAST_FLOOD); - if (err) - return err; - - err = br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP, BR_PROXYARP); - if (err) - return err; - - err = br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP_WIFI, BR_PROXYARP_WIFI); - if (err) - return err; - - br_vlan_tunnel_old = (p->flags & BR_VLAN_TUNNEL) ? true : false; - err = br_set_port_flag(p, tb, IFLA_BRPORT_VLAN_TUNNEL, BR_VLAN_TUNNEL); - if (err) + old_flags = p->flags; + br_vlan_tunnel_old = (old_flags & BR_VLAN_TUNNEL) ? true : false; + + br_set_port_flag(p, tb, IFLA_BRPORT_MODE, BR_HAIRPIN_MODE); + br_set_port_flag(p, tb, IFLA_BRPORT_GUARD, BR_BPDU_GUARD); + br_set_port_flag(p, tb, IFLA_BRPORT_FAST_LEAVE, + BR_MULTICAST_FAST_LEAVE); + br_set_port_flag(p, tb, IFLA_BRPORT_PROTECT, BR_ROOT_BLOCK); + br_set_port_flag(p, tb, IFLA_BRPORT_LEARNING, BR_LEARNING); + br_set_port_flag(p, tb, IFLA_BRPORT_UNICAST_FLOOD, BR_FLOOD); + br_set_port_flag(p, tb, IFLA_BRPORT_MCAST_FLOOD, BR_MCAST_FLOOD); + br_set_port_flag(p, tb, IFLA_BRPORT_MCAST_TO_UCAST, + BR_MULTICAST_TO_UNICAST); + br_set_port_flag(p, tb, IFLA_BRPORT_BCAST_FLOOD, BR_BCAST_FLOOD); + br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP, BR_PROXYARP); + br_set_port_flag(p, tb, IFLA_BRPORT_PROXYARP_WIFI, BR_PROXYARP_WIFI); + br_set_port_flag(p, tb, IFLA_BRPORT_VLAN_TUNNEL, BR_VLAN_TUNNEL); + br_set_port_flag(p, tb, IFLA_BRPORT_NEIGH_SUPPRESS, BR_NEIGH_SUPPRESS); + br_set_port_flag(p, tb, IFLA_BRPORT_ISOLATED, BR_ISOLATED); + + changed_mask = old_flags ^ p->flags; + + err = br_switchdev_set_port_flag(p, p->flags, changed_mask); + if (err) { + p->flags = old_flags; return err; + } if (br_vlan_tunnel_old && !(p->flags & BR_VLAN_TUNNEL)) nbp_vlan_tunnel_info_flush(p); + br_port_flags_change(p, changed_mask); + if (tb[IFLA_BRPORT_COST]) { err = br_stp_set_path_cost(p, nla_get_u32(tb[IFLA_BRPORT_COST])); if (err) @@ -982,15 +953,6 @@ static int br_setport(struct net_bridge_port *p, struct nlattr *tb[]) p->group_fwd_mask = fwd_mask; } - err = br_set_port_flag(p, tb, IFLA_BRPORT_NEIGH_SUPPRESS, - BR_NEIGH_SUPPRESS); - if (err) - return err; - - err = br_set_port_flag(p, tb, IFLA_BRPORT_ISOLATED, BR_ISOLATED); - if (err) - return err; - if (tb[IFLA_BRPORT_BACKUP_PORT]) { struct net_device *backup_dev = NULL; u32 backup_ifindex; @@ -1008,7 +970,6 @@ static int br_setport(struct net_bridge_port *p, struct nlattr *tb[]) return err; } - br_port_flags_change(p, old_flags ^ p->flags); return 0; } diff --git a/net/bridge/br_switchdev.c b/net/bridge/br_switchdev.c index a9c23ef83443..6a9db6aa5c04 100644 --- a/net/bridge/br_switchdev.c +++ b/net/bridge/br_switchdev.c @@ -65,16 +65,18 @@ int br_switchdev_set_port_flag(struct net_bridge_port *p, struct switchdev_attr attr = { .orig_dev = p->dev, .id = SWITCHDEV_ATTR_ID_PORT_PRE_BRIDGE_FLAGS, - .u.brport_flags = mask, }; struct switchdev_notifier_port_attr_info info = { .attr = &attr, }; int err; - if (mask & ~BR_PORT_FLAGS_HW_OFFLOAD) + mask &= BR_PORT_FLAGS_HW_OFFLOAD; + if (!mask) return 0; + attr.u.brport_flags = mask; + /* We run from atomic context here */ err = call_switchdev_notifiers(SWITCHDEV_PORT_ATTR_SET, p->dev, &info.info, NULL); -- 2.25.1
next prev parent reply other threads:[~2021-02-12 15:18 UTC|newest] Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-02-12 15:15 [PATCH v5 net-next 00/10] Cleanup in brport flags switchdev offload for DSA Vladimir Oltean 2021-02-12 15:15 ` [Bridge] " Vladimir Oltean 2021-02-12 15:15 ` [PATCH v5 net-next 01/10] net: switchdev: propagate extack to port attributes Vladimir Oltean 2021-02-12 15:15 ` [Bridge] " Vladimir Oltean 2021-02-12 16:00 ` Nikolay Aleksandrov 2021-02-12 16:00 ` [Bridge] " Nikolay Aleksandrov 2021-02-12 17:03 ` Grygorii Strashko 2021-02-12 15:15 ` Vladimir Oltean [this message] 2021-02-12 15:15 ` [Bridge] [PATCH v5 net-next 02/10] net: bridge: offload all port flags at once in br_setport Vladimir Oltean 2021-02-12 15:57 ` Nikolay Aleksandrov 2021-02-12 15:57 ` [Bridge] " Nikolay Aleksandrov 2021-02-12 18:05 ` Florian Fainelli 2021-02-12 18:05 ` [Bridge] " Florian Fainelli 2021-02-12 15:15 ` [PATCH v5 net-next 03/10] net: bridge: don't print in br_switchdev_set_port_flag Vladimir Oltean 2021-02-12 15:15 ` [Bridge] " Vladimir Oltean 2021-02-12 15:59 ` Nikolay Aleksandrov 2021-02-12 15:59 ` [Bridge] " Nikolay Aleksandrov 2021-02-12 18:07 ` Florian Fainelli 2021-02-12 18:07 ` [Bridge] " Florian Fainelli 2021-02-12 15:15 ` [PATCH v5 net-next 04/10] net: dsa: configure better brport flags when ports leave the bridge Vladimir Oltean 2021-02-12 15:15 ` [Bridge] " Vladimir Oltean 2021-02-12 15:15 ` [PATCH v5 net-next 05/10] net: switchdev: pass flags and mask to both {PRE_,}BRIDGE_FLAGS attributes Vladimir Oltean 2021-02-12 15:15 ` [Bridge] [PATCH v5 net-next 05/10] net: switchdev: pass flags and mask to both {PRE_, }BRIDGE_FLAGS attributes Vladimir Oltean 2021-02-12 17:06 ` [PATCH v5 net-next 05/10] net: switchdev: pass flags and mask to both {PRE_,}BRIDGE_FLAGS attributes Grygorii Strashko 2021-02-12 18:10 ` Florian Fainelli 2021-02-12 18:10 ` [Bridge] [PATCH v5 net-next 05/10] net: switchdev: pass flags and mask to both {PRE_, }BRIDGE_FLAGS attributes Florian Fainelli 2021-02-12 15:15 ` [PATCH v5 net-next 06/10] net: dsa: act as passthrough for bridge port flags Vladimir Oltean 2021-02-12 15:15 ` [Bridge] " Vladimir Oltean 2021-02-12 18:19 ` Florian Fainelli 2021-02-12 18:19 ` [Bridge] " Florian Fainelli 2021-02-12 15:15 ` [PATCH v5 net-next 07/10] net: dsa: felix: restore multicast flood to CPU when NPI tagger reinitializes Vladimir Oltean 2021-02-12 15:15 ` [Bridge] " Vladimir Oltean 2021-02-12 18:12 ` Florian Fainelli 2021-02-12 18:12 ` [Bridge] " Florian Fainelli 2021-02-12 15:15 ` [PATCH v5 net-next 08/10] net: mscc: ocelot: use separate flooding PGID for broadcast Vladimir Oltean 2021-02-12 15:15 ` [Bridge] " Vladimir Oltean 2021-02-12 15:15 ` [PATCH v5 net-next 09/10] net: mscc: ocelot: offload bridge port flags to device Vladimir Oltean 2021-02-12 15:15 ` [Bridge] " Vladimir Oltean 2021-02-12 15:16 ` [PATCH v5 net-next 10/10] net: dsa: sja1105: " Vladimir Oltean 2021-02-12 15:16 ` [Bridge] " Vladimir Oltean 2021-02-13 1:20 ` [PATCH v5 net-next 00/10] Cleanup in brport flags switchdev offload for DSA patchwork-bot+netdevbpf 2021-02-13 1:20 ` [Bridge] " patchwork-bot+netdevbpf
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