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Message-Id: <0f7f201a059b24c96eac837e1f424e2483254e1c.1632565508.git.leonro@nvidia.com>
Date: Sat, 25 Sep 2021 14:22:41 +0300
From: Leon Romanovsky <leon@...nel.org>
To: "David S . Miller" <davem@...emloft.net>,
Jakub Kicinski <kuba@...nel.org>
Cc: Leon Romanovsky <leonro@...dia.com>,
Alexandre Belloni <alexandre.belloni@...tlin.com>,
Andrew Lunn <andrew@...n.ch>, Ariel Elior <aelior@...vell.com>,
Bin Luo <luobin9@...wei.com>,
Claudiu Manoil <claudiu.manoil@....com>,
Coiby Xu <coiby.xu@...il.com>,
Derek Chickles <dchickles@...vell.com>, drivers@...sando.io,
Felix Manlunas <fmanlunas@...vell.com>,
Florian Fainelli <f.fainelli@...il.com>,
Geetha sowjanya <gakula@...vell.com>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
GR-everest-linux-l2@...vell.com, GR-Linux-NIC-Dev@...vell.com,
hariprasad <hkelam@...vell.com>,
Ido Schimmel <idosch@...dia.com>,
Intel Corporation <linuxwwan@...el.com>,
intel-wired-lan@...ts.osuosl.org,
Ioana Ciornei <ioana.ciornei@....com>,
Jerin Jacob <jerinj@...vell.com>,
Jesse Brandeburg <jesse.brandeburg@...el.com>,
Jiri Pirko <jiri@...dia.com>,
Jonathan Lemon <jonathan.lemon@...il.com>,
Linu Cherian <lcherian@...vell.com>,
linux-kernel@...r.kernel.org, linux-omap@...r.kernel.org,
linux-rdma@...r.kernel.org, linux-staging@...ts.linux.dev,
Loic Poulain <loic.poulain@...aro.org>,
Manish Chopra <manishc@...vell.com>,
M Chetan Kumar <m.chetan.kumar@...el.com>,
Michael Chan <michael.chan@...adcom.com>,
Michael Guralnik <michaelgur@...lanox.com>,
netdev@...r.kernel.org, oss-drivers@...igine.com,
Richard Cochran <richardcochran@...il.com>,
Saeed Mahameed <saeedm@...dia.com>,
Satanand Burla <sburla@...vell.com>,
Sergey Ryazanov <ryazanov.s.a@...il.com>,
Shannon Nelson <snelson@...sando.io>,
Simon Horman <simon.horman@...igine.com>,
Subbaraya Sundeep <sbhatta@...vell.com>,
Sunil Goutham <sgoutham@...vell.com>,
Taras Chornyi <tchornyi@...vell.com>,
Tariq Toukan <tariqt@...dia.com>,
Tony Nguyen <anthony.l.nguyen@...el.com>,
UNGLinuxDriver@...rochip.com, Vadym Kochan <vkochan@...vell.com>,
Vivien Didelot <vivien.didelot@...il.com>,
Vladimir Oltean <vladimir.oltean@....com>
Subject: [PATCH net-next v1 01/21] devlink: Notify users when objects are accessible
From: Leon Romanovsky <leonro@...dia.com>
The devlink core code notified users about add/remove objects without
relation if this object can be accessible or not. In this patch we unify
such user visible notifications in one place.
Signed-off-by: Leon Romanovsky <leonro@...dia.com>
---
net/core/devlink.c | 107 +++++++++++++++++++++++++++++++++++++++------
1 file changed, 93 insertions(+), 14 deletions(-)
diff --git a/net/core/devlink.c b/net/core/devlink.c
index 3ea33c689790..06edb2f1d21e 100644
--- a/net/core/devlink.c
+++ b/net/core/devlink.c
@@ -742,6 +742,7 @@ static void devlink_notify(struct devlink *devlink, enum devlink_command cmd)
int err;
WARN_ON(cmd != DEVLINK_CMD_NEW && cmd != DEVLINK_CMD_DEL);
+ WARN_ON(!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED));
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
@@ -1040,11 +1041,15 @@ static int devlink_nl_port_fill(struct sk_buff *msg,
static void devlink_port_notify(struct devlink_port *devlink_port,
enum devlink_command cmd)
{
+ struct devlink *devlink = devlink_port->devlink;
struct sk_buff *msg;
int err;
WARN_ON(cmd != DEVLINK_CMD_PORT_NEW && cmd != DEVLINK_CMD_PORT_DEL);
+ if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED))
+ return;
+
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
return;
@@ -1055,18 +1060,19 @@ static void devlink_port_notify(struct devlink_port *devlink_port,
return;
}
- genlmsg_multicast_netns(&devlink_nl_family,
- devlink_net(devlink_port->devlink), msg, 0,
- DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
+ genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), msg,
+ 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
}
static void devlink_rate_notify(struct devlink_rate *devlink_rate,
enum devlink_command cmd)
{
+ struct devlink *devlink = devlink_rate->devlink;
struct sk_buff *msg;
int err;
WARN_ON(cmd != DEVLINK_CMD_RATE_NEW && cmd != DEVLINK_CMD_RATE_DEL);
+ WARN_ON(!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED));
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
@@ -1078,9 +1084,8 @@ static void devlink_rate_notify(struct devlink_rate *devlink_rate,
return;
}
- genlmsg_multicast_netns(&devlink_nl_family,
- devlink_net(devlink_rate->devlink), msg, 0,
- DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
+ genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), msg,
+ 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
}
static int devlink_nl_cmd_rate_get_dumpit(struct sk_buff *msg,
@@ -4150,6 +4155,7 @@ static void __devlink_flash_update_notify(struct devlink *devlink,
WARN_ON(cmd != DEVLINK_CMD_FLASH_UPDATE &&
cmd != DEVLINK_CMD_FLASH_UPDATE_END &&
cmd != DEVLINK_CMD_FLASH_UPDATE_STATUS);
+ WARN_ON(!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED));
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
@@ -5145,17 +5151,18 @@ static void devlink_nl_region_notify(struct devlink_region *region,
struct devlink_snapshot *snapshot,
enum devlink_command cmd)
{
+ struct devlink *devlink = region->devlink;
struct sk_buff *msg;
WARN_ON(cmd != DEVLINK_CMD_REGION_NEW && cmd != DEVLINK_CMD_REGION_DEL);
+ WARN_ON(!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED));
msg = devlink_nl_region_notify_build(region, snapshot, cmd, 0, 0);
if (IS_ERR(msg))
return;
- genlmsg_multicast_netns(&devlink_nl_family,
- devlink_net(region->devlink), msg, 0,
- DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
+ genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), msg,
+ 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
}
/**
@@ -6920,10 +6927,12 @@ devlink_nl_health_reporter_fill(struct sk_buff *msg,
static void devlink_recover_notify(struct devlink_health_reporter *reporter,
enum devlink_command cmd)
{
+ struct devlink *devlink = reporter->devlink;
struct sk_buff *msg;
int err;
WARN_ON(cmd != DEVLINK_CMD_HEALTH_REPORTER_RECOVER);
+ WARN_ON(!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED));
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
@@ -6935,9 +6944,8 @@ static void devlink_recover_notify(struct devlink_health_reporter *reporter,
return;
}
- genlmsg_multicast_netns(&devlink_nl_family,
- devlink_net(reporter->devlink),
- msg, 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
+ genlmsg_multicast_netns(&devlink_nl_family, devlink_net(devlink), msg,
+ 0, DEVLINK_MCGRP_CONFIG, GFP_KERNEL);
}
void
@@ -8955,6 +8963,68 @@ struct devlink *devlink_alloc_ns(const struct devlink_ops *ops,
}
EXPORT_SYMBOL_GPL(devlink_alloc_ns);
+static void
+devlink_trap_policer_notify(struct devlink *devlink,
+ const struct devlink_trap_policer_item *policer_item,
+ enum devlink_command cmd);
+static void
+devlink_trap_group_notify(struct devlink *devlink,
+ const struct devlink_trap_group_item *group_item,
+ enum devlink_command cmd);
+static void devlink_trap_notify(struct devlink *devlink,
+ const struct devlink_trap_item *trap_item,
+ enum devlink_command cmd);
+
+static void devlink_notify_register(struct devlink *devlink)
+{
+ struct devlink_trap_policer_item *policer_item;
+ struct devlink_trap_group_item *group_item;
+ struct devlink_trap_item *trap_item;
+ struct devlink_port *devlink_port;
+
+ devlink_notify(devlink, DEVLINK_CMD_NEW);
+ list_for_each_entry(devlink_port, &devlink->port_list, list)
+ devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_NEW);
+
+ list_for_each_entry(policer_item, &devlink->trap_policer_list, list)
+ devlink_trap_policer_notify(devlink, policer_item,
+ DEVLINK_CMD_TRAP_POLICER_NEW);
+
+ list_for_each_entry(group_item, &devlink->trap_group_list, list)
+ devlink_trap_group_notify(devlink, group_item,
+ DEVLINK_CMD_TRAP_GROUP_NEW);
+
+ list_for_each_entry(trap_item, &devlink->trap_list, list)
+ devlink_trap_notify(devlink, trap_item, DEVLINK_CMD_TRAP_NEW);
+
+ devlink_params_publish(devlink);
+}
+
+static void devlink_notify_unregister(struct devlink *devlink)
+{
+ struct devlink_trap_policer_item *policer_item;
+ struct devlink_trap_group_item *group_item;
+ struct devlink_trap_item *trap_item;
+ struct devlink_port *devlink_port;
+
+ devlink_params_unpublish(devlink);
+
+ list_for_each_entry_reverse(trap_item, &devlink->trap_list, list)
+ devlink_trap_notify(devlink, trap_item, DEVLINK_CMD_TRAP_DEL);
+
+ list_for_each_entry_reverse(group_item, &devlink->trap_group_list, list)
+ devlink_trap_group_notify(devlink, group_item,
+ DEVLINK_CMD_TRAP_GROUP_DEL);
+ list_for_each_entry_reverse(policer_item, &devlink->trap_policer_list,
+ list)
+ devlink_trap_policer_notify(devlink, policer_item,
+ DEVLINK_CMD_TRAP_POLICER_DEL);
+
+ list_for_each_entry_reverse(devlink_port, &devlink->port_list, list)
+ devlink_port_notify(devlink_port, DEVLINK_CMD_PORT_DEL);
+ devlink_notify(devlink, DEVLINK_CMD_DEL);
+}
+
/**
* devlink_register - Register devlink instance
*
@@ -8964,7 +9034,7 @@ void devlink_register(struct devlink *devlink)
{
mutex_lock(&devlink_mutex);
xa_set_mark(&devlinks, devlink->index, DEVLINK_REGISTERED);
- devlink_notify(devlink, DEVLINK_CMD_NEW);
+ devlink_notify_register(devlink);
mutex_unlock(&devlink_mutex);
}
EXPORT_SYMBOL_GPL(devlink_register);
@@ -8982,7 +9052,7 @@ void devlink_unregister(struct devlink *devlink)
mutex_lock(&devlink_mutex);
WARN_ON(devlink_reload_supported(devlink->ops) &&
devlink->reload_enabled);
- devlink_notify(devlink, DEVLINK_CMD_DEL);
+ devlink_notify_unregister(devlink);
xa_clear_mark(&devlinks, devlink->index, DEVLINK_REGISTERED);
mutex_unlock(&devlink_mutex);
}
@@ -10086,6 +10156,9 @@ void devlink_params_publish(struct devlink *devlink)
{
struct devlink_param_item *param_item;
+ if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED))
+ return;
+
list_for_each_entry(param_item, &devlink->param_list, list) {
if (param_item->published)
continue;
@@ -10631,6 +10704,8 @@ devlink_trap_group_notify(struct devlink *devlink,
WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_GROUP_NEW &&
cmd != DEVLINK_CMD_TRAP_GROUP_DEL);
+ if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED))
+ return;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
@@ -10672,6 +10747,8 @@ static void devlink_trap_notify(struct devlink *devlink,
WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_NEW &&
cmd != DEVLINK_CMD_TRAP_DEL);
+ if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED))
+ return;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
@@ -11053,6 +11130,8 @@ devlink_trap_policer_notify(struct devlink *devlink,
WARN_ON_ONCE(cmd != DEVLINK_CMD_TRAP_POLICER_NEW &&
cmd != DEVLINK_CMD_TRAP_POLICER_DEL);
+ if (!xa_get_mark(&devlinks, devlink->index, DEVLINK_REGISTERED))
+ return;
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (!msg)
--
2.31.1
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