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Message-Id: <1340121261-2966-13-git-send-email-jpirko@redhat.com>
Date: Tue, 19 Jun 2012 17:54:14 +0200
From: Jiri Pirko <jpirko@...hat.com>
To: netdev@...r.kernel.org
Cc: davem@...emloft.net, eric.dumazet@...il.com, jbrouer@...hat.com
Subject: [patch net-next 12/19] team: allow to specify one option instance to be send to userspace
No need to walk through option instance list and look for ->changed ==
true when called knows exactly what one option instance changed.
Also use lists to pass option instances needed to be present in netlink
message.
Signed-off-by: Jiri Pirko <jpirko@...hat.com>
---
drivers/net/team/team.c | 210 ++++++++++++++++++++++++++++-------------------
1 file changed, 124 insertions(+), 86 deletions(-)
diff --git a/drivers/net/team/team.c b/drivers/net/team/team.c
index e977f44..da72f41 100644
--- a/drivers/net/team/team.c
+++ b/drivers/net/team/team.c
@@ -89,6 +89,7 @@ static void team_refresh_port_linkup(struct team_port *port)
struct team_option_inst { /* One for each option instance */
struct list_head list;
+ struct list_head tmp_list;
struct team_option *option;
struct team_option_inst_info info;
bool changed;
@@ -319,6 +320,8 @@ static void __team_options_unregister(struct team *team,
}
static void __team_options_change_check(struct team *team);
+static void __team_option_inst_change(struct team *team,
+ struct team_option_inst *opt_inst);
int team_options_register(struct team *team,
const struct team_option *option,
@@ -383,8 +386,7 @@ static int team_option_set(struct team *team,
if (err)
return err;
- opt_inst->changed = true;
- __team_options_change_check(team);
+ __team_option_inst_change(team, opt_inst);
return err;
}
@@ -1565,9 +1567,95 @@ err_fill:
return err;
}
+static int team_nl_fill_one_option_get(struct sk_buff *skb, struct team *team,
+ struct team_option_inst *opt_inst)
+{
+ struct nlattr *option_item;
+ struct team_option *option = opt_inst->option;
+ struct team_option_inst_info *opt_inst_info;
+ struct team_gsetter_ctx ctx;
+ int err;
+
+ option_item = nla_nest_start(skb, TEAM_ATTR_ITEM_OPTION);
+ if (!option_item)
+ goto nla_put_failure;
+ if (nla_put_string(skb, TEAM_ATTR_OPTION_NAME, option->name))
+ goto nla_put_failure;
+ if (opt_inst->changed) {
+ if (nla_put_flag(skb, TEAM_ATTR_OPTION_CHANGED))
+ goto nla_put_failure;
+ opt_inst->changed = false;
+ }
+ if (opt_inst->removed && nla_put_flag(skb, TEAM_ATTR_OPTION_REMOVED))
+ goto nla_put_failure;
+
+ opt_inst_info = &opt_inst->info;
+ if (opt_inst_info->port &&
+ nla_put_u32(skb, TEAM_ATTR_OPTION_PORT_IFINDEX,
+ opt_inst_info->port->dev->ifindex))
+ goto nla_put_failure;
+ if (opt_inst->option->array_size &&
+ nla_put_u32(skb, TEAM_ATTR_OPTION_ARRAY_INDEX,
+ opt_inst_info->array_index))
+ goto nla_put_failure;
+ ctx.info = opt_inst_info;
+
+ switch (option->type) {
+ case TEAM_OPTION_TYPE_U32:
+ if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_U32))
+ goto nla_put_failure;
+ err = team_option_get(team, opt_inst, &ctx);
+ if (err)
+ goto errout;
+ if (nla_put_u32(skb, TEAM_ATTR_OPTION_DATA, ctx.data.u32_val))
+ goto nla_put_failure;
+ break;
+ case TEAM_OPTION_TYPE_STRING:
+ if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_STRING))
+ goto nla_put_failure;
+ err = team_option_get(team, opt_inst, &ctx);
+ if (err)
+ goto errout;
+ if (nla_put_string(skb, TEAM_ATTR_OPTION_DATA,
+ ctx.data.str_val))
+ goto nla_put_failure;
+ break;
+ case TEAM_OPTION_TYPE_BINARY:
+ if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_BINARY))
+ goto nla_put_failure;
+ err = team_option_get(team, opt_inst, &ctx);
+ if (err)
+ goto errout;
+ if (nla_put(skb, TEAM_ATTR_OPTION_DATA, ctx.data.bin_val.len,
+ ctx.data.bin_val.ptr))
+ goto nla_put_failure;
+ break;
+ case TEAM_OPTION_TYPE_BOOL:
+ if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_FLAG))
+ goto nla_put_failure;
+ err = team_option_get(team, opt_inst, &ctx);
+ if (err)
+ goto errout;
+ if (ctx.data.bool_val &&
+ nla_put_flag(skb, TEAM_ATTR_OPTION_DATA))
+ goto nla_put_failure;
+ break;
+ default:
+ BUG();
+ }
+ nla_nest_end(skb, option_item);
+ return 0;
+
+nla_put_failure:
+ err = -EMSGSIZE;
+errout:
+ return err;
+}
+
static int team_nl_fill_options_get(struct sk_buff *skb,
u32 pid, u32 seq, int flags,
- struct team *team, bool fillall)
+ struct team *team,
+ struct list_head *sel_opt_inst_list)
{
struct nlattr *option_list;
void *hdr;
@@ -1585,85 +1673,10 @@ static int team_nl_fill_options_get(struct sk_buff *skb,
if (!option_list)
goto nla_put_failure;
- list_for_each_entry(opt_inst, &team->option_inst_list, list) {
- struct nlattr *option_item;
- struct team_option *option = opt_inst->option;
- struct team_option_inst_info *opt_inst_info;
- struct team_gsetter_ctx ctx;
-
- /* Include only changed options if fill all mode is not on */
- if (!fillall && !opt_inst->changed)
- continue;
- option_item = nla_nest_start(skb, TEAM_ATTR_ITEM_OPTION);
- if (!option_item)
- goto nla_put_failure;
- if (nla_put_string(skb, TEAM_ATTR_OPTION_NAME, option->name))
- goto nla_put_failure;
- if (opt_inst->changed) {
- if (nla_put_flag(skb, TEAM_ATTR_OPTION_CHANGED))
- goto nla_put_failure;
- opt_inst->changed = false;
- }
- if (opt_inst->removed &&
- nla_put_flag(skb, TEAM_ATTR_OPTION_REMOVED))
- goto nla_put_failure;
-
- opt_inst_info = &opt_inst->info;
- if (opt_inst_info->port &&
- nla_put_u32(skb, TEAM_ATTR_OPTION_PORT_IFINDEX,
- opt_inst_info->port->dev->ifindex))
- goto nla_put_failure;
- if (opt_inst->option->array_size &&
- nla_put_u32(skb, TEAM_ATTR_OPTION_ARRAY_INDEX,
- opt_inst_info->array_index))
- goto nla_put_failure;
- ctx.info = opt_inst_info;
-
- switch (option->type) {
- case TEAM_OPTION_TYPE_U32:
- if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_U32))
- goto nla_put_failure;
- err = team_option_get(team, opt_inst, &ctx);
- if (err)
- goto errout;
- if (nla_put_u32(skb, TEAM_ATTR_OPTION_DATA,
- ctx.data.u32_val))
- goto nla_put_failure;
- break;
- case TEAM_OPTION_TYPE_STRING:
- if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_STRING))
- goto nla_put_failure;
- err = team_option_get(team, opt_inst, &ctx);
- if (err)
- goto errout;
- if (nla_put_string(skb, TEAM_ATTR_OPTION_DATA,
- ctx.data.str_val))
- goto nla_put_failure;
- break;
- case TEAM_OPTION_TYPE_BINARY:
- if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_BINARY))
- goto nla_put_failure;
- err = team_option_get(team, opt_inst, &ctx);
- if (err)
- goto errout;
- if (nla_put(skb, TEAM_ATTR_OPTION_DATA,
- ctx.data.bin_val.len, ctx.data.bin_val.ptr))
- goto nla_put_failure;
- break;
- case TEAM_OPTION_TYPE_BOOL:
- if (nla_put_u8(skb, TEAM_ATTR_OPTION_TYPE, NLA_FLAG))
- goto nla_put_failure;
- err = team_option_get(team, opt_inst, &ctx);
- if (err)
- goto errout;
- if (ctx.data.bool_val &&
- nla_put_flag(skb, TEAM_ATTR_OPTION_DATA))
- goto nla_put_failure;
- break;
- default:
- BUG();
- }
- nla_nest_end(skb, option_item);
+ list_for_each_entry(opt_inst, sel_opt_inst_list, tmp_list) {
+ err = team_nl_fill_one_option_get(skb, team, opt_inst);
+ if (err)
+ goto errout;
}
nla_nest_end(skb, option_list);
@@ -1680,9 +1693,14 @@ static int team_nl_fill_options_get_all(struct sk_buff *skb,
struct genl_info *info, int flags,
struct team *team)
{
+ struct team_option_inst *opt_inst;
+ LIST_HEAD(sel_opt_inst_list);
+
+ list_for_each_entry(opt_inst, &team->option_inst_list, list)
+ list_add_tail(&opt_inst->tmp_list, &sel_opt_inst_list);
return team_nl_fill_options_get(skb, info->snd_pid,
info->snd_seq, NLM_F_ACK,
- team, true);
+ team, &sel_opt_inst_list);
}
static int team_nl_cmd_options_get(struct sk_buff *skb, struct genl_info *info)
@@ -1941,7 +1959,8 @@ static struct genl_multicast_group team_change_event_mcgrp = {
.name = TEAM_GENL_CHANGE_EVENT_MC_GRP_NAME,
};
-static int team_nl_send_event_options_get(struct team *team)
+static int team_nl_send_event_options_get(struct team *team,
+ struct list_head *sel_opt_inst_list)
{
struct sk_buff *skb;
int err;
@@ -1951,7 +1970,7 @@ static int team_nl_send_event_options_get(struct team *team)
if (!skb)
return -ENOMEM;
- err = team_nl_fill_options_get(skb, 0, 0, 0, team, false);
+ err = team_nl_fill_options_get(skb, 0, 0, 0, team, sel_opt_inst_list);
if (err < 0)
goto err_fill;
@@ -2021,12 +2040,31 @@ static void team_nl_fini(void)
static void __team_options_change_check(struct team *team)
{
int err;
+ struct team_option_inst *opt_inst;
+ LIST_HEAD(sel_opt_inst_list);
- err = team_nl_send_event_options_get(team);
+ list_for_each_entry(opt_inst, &team->option_inst_list, list) {
+ if (opt_inst->changed)
+ list_add_tail(&opt_inst->tmp_list, &sel_opt_inst_list);
+ }
+ err = team_nl_send_event_options_get(team, &sel_opt_inst_list);
if (err)
netdev_warn(team->dev, "Failed to send options change via netlink\n");
}
+static void __team_option_inst_change(struct team *team,
+ struct team_option_inst *sel_opt_inst)
+{
+ int err;
+ LIST_HEAD(sel_opt_inst_list);
+
+ sel_opt_inst->changed = true;
+ list_add(&sel_opt_inst->tmp_list, &sel_opt_inst_list);
+ err = team_nl_send_event_options_get(team, &sel_opt_inst_list);
+ if (err)
+ netdev_warn(team->dev, "Failed to send option change via netlink\n");
+}
+
/* rtnl lock is held */
static void __team_port_change_check(struct team_port *port, bool linkup)
{
--
1.7.10.2
--
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