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team: add binary option type

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For transfering generic binary data (e.g. BPF code), introduce new
binary option type.

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jiri Pirko 2012-04-04 12:16:26 +00:00 committed by David S. Miller
parent bd856615c1
commit 2615598fc1
2 changed files with 34 additions and 4 deletions
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30
drivers/net/team/team.c
View File

@ -1145,10 +1145,7 @@ team_nl_option_policy[TEAM_ATTR_OPTION_MAX + 1] = {
},
[TEAM_ATTR_OPTION_CHANGED] = { .type = NLA_FLAG },
[TEAM_ATTR_OPTION_TYPE] = { .type = NLA_U8 },
[TEAM_ATTR_OPTION_DATA] = {
.type = NLA_BINARY,
.len = TEAM_STRING_MAX_LEN,
},
[TEAM_ATTR_OPTION_DATA] = { .type = NLA_BINARY },
};
static int team_nl_cmd_noop(struct sk_buff *skb, struct genl_info *info)
@ -1257,6 +1254,7 @@ static int team_nl_fill_options_get(struct sk_buff *skb,
list_for_each_entry(option, &team->option_list, list) {
struct nlattr *option_item;
long arg;
struct team_option_binary tbinary;
/* Include only changed options if fill all mode is not on */
if (!fillall && !option->changed)
@ -1290,6 +1288,15 @@ static int team_nl_fill_options_get(struct sk_buff *skb,
(char *) arg))
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;
arg = (long) &tbinary;
team_option_get(team, option, &arg);
if (nla_put(skb, TEAM_ATTR_OPTION_DATA,
tbinary.data_len, tbinary.data))
goto nla_put_failure;
break;
default:
BUG();
}
@ -1374,6 +1381,9 @@ static int team_nl_cmd_options_set(struct sk_buff *skb, struct genl_info *info)
case NLA_STRING:
opt_type = TEAM_OPTION_TYPE_STRING;
break;
case NLA_BINARY:
opt_type = TEAM_OPTION_TYPE_BINARY;
break;
default:
goto team_put;
}
@ -1382,19 +1392,31 @@ static int team_nl_cmd_options_set(struct sk_buff *skb, struct genl_info *info)
list_for_each_entry(option, &team->option_list, list) {
long arg;
struct nlattr *opt_data_attr;
struct team_option_binary tbinary;
int data_len;
if (option->type != opt_type ||
strcmp(option->name, opt_name))
continue;
opt_found = true;
opt_data_attr = mode_attrs[TEAM_ATTR_OPTION_DATA];
data_len = nla_len(opt_data_attr);
switch (opt_type) {
case TEAM_OPTION_TYPE_U32:
arg = nla_get_u32(opt_data_attr);
break;
case TEAM_OPTION_TYPE_STRING:
if (data_len > TEAM_STRING_MAX_LEN) {
err = -EINVAL;
goto team_put;
}
arg = (long) nla_data(opt_data_attr);
break;
case TEAM_OPTION_TYPE_BINARY:
tbinary.data_len = data_len;
tbinary.data = nla_data(opt_data_attr);
arg = (long) &tbinary;
break;
default:
BUG();
}

8
include/linux/if_team.h
View File

@ -68,6 +68,7 @@ struct team_mode_ops {
enum team_option_type {
TEAM_OPTION_TYPE_U32,
TEAM_OPTION_TYPE_STRING,
TEAM_OPTION_TYPE_BINARY,
};
struct team_option {
@ -82,6 +83,13 @@ struct team_option {
bool removed;
};
struct team_option_binary {
u32 data_len;
void *data;
};
#define team_optarg_tbinary(arg) (*((struct team_option_binary **) arg))
struct team_mode {
struct list_head list;
const char *kind;