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Date: Fri, 19 Jul 2013 15:40:20 +0200
From: Jiri Pirko <jiri@...nulli.us>
To: netdev@...r.kernel.org
Cc: davem@...emloft.net, fubar@...ibm.com, andy@...yhouse.net,
kaber@...sh.net, stephen@...workplumber.org, kuznet@....inr.ac.ru,
jmorris@...ei.org, yoshfuji@...ux-ipv6.org, edumazet@...gle.com
Subject: [patch net-next 1/3] team: add peer notification
When port is enabled or disabled, allow to notify peers by unsolicitated
NAs or gratuitous ARPs. Disabled by default.
Signed-off-by: Jiri Pirko <jiri@...nulli.us>
---
drivers/net/team/team.c | 87 +++++++++++++++++++++++++++++++++++++++++++++++++
include/linux/if_team.h | 8 ++++-
2 files changed, 94 insertions(+), 1 deletion(-)
diff --git a/drivers/net/team/team.c b/drivers/net/team/team.c
index bff7e0b..9b185f7 100644
--- a/drivers/net/team/team.c
+++ b/drivers/net/team/team.c
@@ -622,6 +622,46 @@ static int team_change_mode(struct team *team, const char *kind)
}
+/*********************
+ * Peers notification
+ *********************/
+
+static void team_notify_peers_work(struct work_struct *work)
+{
+ struct team *team;
+
+ team = container_of(work, struct team, notify_peers.dw.work);
+
+ if (!rtnl_trylock()) {
+ schedule_delayed_work(&team->notify_peers.dw, 0);
+ return;
+ }
+ call_netdevice_notifiers(NETDEV_NOTIFY_PEERS, team->dev);
+ rtnl_unlock();
+ if (!atomic_dec_and_test(&team->notify_peers.count_pending))
+ schedule_delayed_work(&team->notify_peers.dw,
+ (team->notify_peers.interval * HZ) / 1000);
+}
+
+static void team_notify_peers(struct team *team)
+{
+ if (!team->notify_peers.count || !netif_running(team->dev))
+ return;
+ atomic_set(&team->notify_peers.count_pending, team->notify_peers.count);
+ schedule_delayed_work(&team->notify_peers.dw, 0);
+}
+
+static void team_notify_peers_init(struct team *team)
+{
+ INIT_DELAYED_WORK(&team->notify_peers.dw, team_notify_peers_work);
+}
+
+static void team_notify_peers_fini(struct team *team)
+{
+ cancel_delayed_work_sync(&team->notify_peers.dw);
+}
+
+
/************************
* Rx path frame handler
************************/
@@ -846,6 +886,7 @@ static void team_port_enable(struct team *team,
team_queue_override_port_add(team, port);
if (team->ops.port_enabled)
team->ops.port_enabled(team, port);
+ team_notify_peers(team);
}
static void __reconstruct_port_hlist(struct team *team, int rm_index)
@@ -875,6 +916,7 @@ static void team_port_disable(struct team *team,
team->en_port_count--;
team_queue_override_port_del(team, port);
team_adjust_ops(team);
+ team_notify_peers(team);
}
#define TEAM_VLAN_FEATURES (NETIF_F_ALL_CSUM | NETIF_F_SG | \
@@ -1205,6 +1247,34 @@ static int team_mode_option_set(struct team *team, struct team_gsetter_ctx *ctx)
return team_change_mode(team, ctx->data.str_val);
}
+static int team_notify_peers_count_get(struct team *team,
+ struct team_gsetter_ctx *ctx)
+{
+ ctx->data.u32_val = team->notify_peers.count;
+ return 0;
+}
+
+static int team_notify_peers_count_set(struct team *team,
+ struct team_gsetter_ctx *ctx)
+{
+ team->notify_peers.count = ctx->data.u32_val;
+ return 0;
+}
+
+static int team_notify_peers_interval_get(struct team *team,
+ struct team_gsetter_ctx *ctx)
+{
+ ctx->data.u32_val = team->notify_peers.interval;
+ return 0;
+}
+
+static int team_notify_peers_interval_set(struct team *team,
+ struct team_gsetter_ctx *ctx)
+{
+ team->notify_peers.interval = ctx->data.u32_val;
+ return 0;
+}
+
static int team_port_en_option_get(struct team *team,
struct team_gsetter_ctx *ctx)
{
@@ -1317,6 +1387,18 @@ static const struct team_option team_options[] = {
.setter = team_mode_option_set,
},
{
+ .name = "notify_peers_count",
+ .type = TEAM_OPTION_TYPE_U32,
+ .getter = team_notify_peers_count_get,
+ .setter = team_notify_peers_count_set,
+ },
+ {
+ .name = "notify_peers_interval",
+ .type = TEAM_OPTION_TYPE_U32,
+ .getter = team_notify_peers_interval_get,
+ .setter = team_notify_peers_interval_set,
+ },
+ {
.name = "enabled",
.type = TEAM_OPTION_TYPE_BOOL,
.per_port = true,
@@ -1396,6 +1478,9 @@ static int team_init(struct net_device *dev)
INIT_LIST_HEAD(&team->option_list);
INIT_LIST_HEAD(&team->option_inst_list);
+
+ team_notify_peers_init(team);
+
err = team_options_register(team, team_options, ARRAY_SIZE(team_options));
if (err)
goto err_options_register;
@@ -1406,6 +1491,7 @@ static int team_init(struct net_device *dev)
return 0;
err_options_register:
+ team_notify_peers_fini(team);
team_queue_override_fini(team);
err_team_queue_override_init:
free_percpu(team->pcpu_stats);
@@ -1425,6 +1511,7 @@ static void team_uninit(struct net_device *dev)
__team_change_mode(team, NULL); /* cleanup */
__team_options_unregister(team, team_options, ARRAY_SIZE(team_options));
+ team_notify_peers_fini(team);
team_queue_override_fini(team);
mutex_unlock(&team->lock);
}
diff --git a/include/linux/if_team.h b/include/linux/if_team.h
index f6156f9..b0b8368 100644
--- a/include/linux/if_team.h
+++ b/include/linux/if_team.h
@@ -10,9 +10,9 @@
#ifndef _LINUX_IF_TEAM_H_
#define _LINUX_IF_TEAM_H_
-
#include <linux/netpoll.h>
#include <net/sch_generic.h>
+#include <linux/types.h>
#include <uapi/linux/if_team.h>
struct team_pcpu_stats {
@@ -194,6 +194,12 @@ struct team {
bool user_carrier_enabled;
bool queue_override_enabled;
struct list_head *qom_lists; /* array of queue override mapping lists */
+ struct {
+ unsigned int count;
+ unsigned int interval; /* in ms */
+ atomic_t count_pending;
+ struct delayed_work dw;
+ } notify_peers;
long mode_priv[TEAM_MODE_PRIV_LONGS];
};
--
1.8.1.4
--
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