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Date: Mon, 5 Dec 2022 09:42:49 +0200
From: Ido Schimmel <idosch@...dia.com>
To: netdev@...r.kernel.org, bridge@...ts.linux-foundation.org
Cc: davem@...emloft.net, kuba@...nel.org, pabeni@...hat.com,
edumazet@...gle.com, roopa@...dia.com, razor@...ckwall.org,
mlxsw@...dia.com, Ido Schimmel <idosch@...dia.com>
Subject: [PATCH net-next 6/8] bridge: mcast: Remove br_mdb_parse()
The parsing of the netlink messages and the validity checks are now
performed in br_mdb_config_init() so we can remove br_mdb_parse().
This finally allows us to stop passing netlink attributes deep in the
MDB control path and only use the MDB configuration structure.
Signed-off-by: Ido Schimmel <idosch@...dia.com>
---
net/bridge/br_mdb.c | 93 +++------------------------------------------
1 file changed, 5 insertions(+), 88 deletions(-)
diff --git a/net/bridge/br_mdb.c b/net/bridge/br_mdb.c
index cb4fd27f118f..67b6bc7272d3 100644
--- a/net/bridge/br_mdb.c
+++ b/net/bridge/br_mdb.c
@@ -754,73 +754,6 @@ static const struct nla_policy br_mdbe_attrs_pol[MDBE_ATTR_MAX + 1] = {
sizeof(struct in6_addr)),
};
-static int br_mdb_parse(struct sk_buff *skb, struct nlmsghdr *nlh,
- struct net_device **pdev, struct br_mdb_entry **pentry,
- struct nlattr **mdb_attrs, struct netlink_ext_ack *extack)
-{
- struct net *net = sock_net(skb->sk);
- struct br_mdb_entry *entry;
- struct br_port_msg *bpm;
- struct nlattr *tb[MDBA_SET_ENTRY_MAX+1];
- struct net_device *dev;
- int err;
-
- err = nlmsg_parse_deprecated(nlh, sizeof(*bpm), tb,
- MDBA_SET_ENTRY_MAX, NULL, NULL);
- if (err < 0)
- return err;
-
- bpm = nlmsg_data(nlh);
- if (bpm->ifindex == 0) {
- NL_SET_ERR_MSG_MOD(extack, "Invalid bridge ifindex");
- return -EINVAL;
- }
-
- dev = __dev_get_by_index(net, bpm->ifindex);
- if (dev == NULL) {
- NL_SET_ERR_MSG_MOD(extack, "Bridge device doesn't exist");
- return -ENODEV;
- }
-
- if (!netif_is_bridge_master(dev)) {
- NL_SET_ERR_MSG_MOD(extack, "Device is not a bridge");
- return -EOPNOTSUPP;
- }
-
- *pdev = dev;
-
- if (!tb[MDBA_SET_ENTRY]) {
- NL_SET_ERR_MSG_MOD(extack, "Missing MDBA_SET_ENTRY attribute");
- return -EINVAL;
- }
- if (nla_len(tb[MDBA_SET_ENTRY]) != sizeof(struct br_mdb_entry)) {
- NL_SET_ERR_MSG_MOD(extack, "Invalid MDBA_SET_ENTRY attribute length");
- return -EINVAL;
- }
-
- entry = nla_data(tb[MDBA_SET_ENTRY]);
- if (!is_valid_mdb_entry(entry, extack))
- return -EINVAL;
- *pentry = entry;
-
- if (tb[MDBA_SET_ENTRY_ATTRS]) {
- err = nla_parse_nested(mdb_attrs, MDBE_ATTR_MAX,
- tb[MDBA_SET_ENTRY_ATTRS],
- br_mdbe_attrs_pol, extack);
- if (err)
- return err;
- if (mdb_attrs[MDBE_ATTR_SOURCE] &&
- !is_valid_mdb_source(mdb_attrs[MDBE_ATTR_SOURCE],
- entry->addr.proto, extack))
- return -EINVAL;
- } else {
- memset(mdb_attrs, 0,
- sizeof(struct nlattr *) * (MDBE_ATTR_MAX + 1));
- }
-
- return 0;
-}
-
static struct net_bridge_mcast *
__br_mdb_choose_context(struct net_bridge *br,
const struct br_mdb_entry *entry,
@@ -959,7 +892,6 @@ static int br_mdb_add_group(struct net_bridge *br, struct net_bridge_port *port,
}
static int __br_mdb_add(struct br_mdb_config *cfg,
- struct nlattr **mdb_attrs,
struct netlink_ext_ack *extack)
{
int ret;
@@ -1084,23 +1016,16 @@ static int br_mdb_config_init(struct net *net, struct sk_buff *skb,
static int br_mdb_add(struct sk_buff *skb, struct nlmsghdr *nlh,
struct netlink_ext_ack *extack)
{
- struct nlattr *mdb_attrs[MDBE_ATTR_MAX + 1];
struct net *net = sock_net(skb->sk);
struct net_bridge_vlan_group *vg;
- struct br_mdb_entry *entry;
struct net_bridge_vlan *v;
struct br_mdb_config cfg;
- struct net_device *dev;
int err;
err = br_mdb_config_init(net, skb, nlh, &cfg, extack);
if (err)
return err;
- err = br_mdb_parse(skb, nlh, &dev, &entry, mdb_attrs, extack);
- if (err < 0)
- return err;
-
if (cfg.p) {
if (cfg.p->state == BR_STATE_DISABLED && cfg.entry->state != MDB_PERMANENT) {
NL_SET_ERR_MSG_MOD(extack, "Port is in disabled state and entry is not permanent");
@@ -1118,19 +1043,18 @@ static int br_mdb_add(struct sk_buff *skb, struct nlmsghdr *nlh,
list_for_each_entry(v, &vg->vlan_list, vlist) {
cfg.entry->vid = v->vid;
cfg.group.vid = v->vid;
- err = __br_mdb_add(&cfg, mdb_attrs, extack);
+ err = __br_mdb_add(&cfg, extack);
if (err)
break;
}
} else {
- err = __br_mdb_add(&cfg, mdb_attrs, extack);
+ err = __br_mdb_add(&cfg, extack);
}
return err;
}
-static int __br_mdb_del(struct br_mdb_config *cfg,
- struct nlattr **mdb_attrs)
+static int __br_mdb_del(struct br_mdb_config *cfg)
{
struct br_mdb_entry *entry = cfg->entry;
struct net_bridge *br = cfg->br;
@@ -1174,23 +1098,16 @@ static int __br_mdb_del(struct br_mdb_config *cfg,
static int br_mdb_del(struct sk_buff *skb, struct nlmsghdr *nlh,
struct netlink_ext_ack *extack)
{
- struct nlattr *mdb_attrs[MDBE_ATTR_MAX + 1];
struct net *net = sock_net(skb->sk);
struct net_bridge_vlan_group *vg;
- struct br_mdb_entry *entry;
struct net_bridge_vlan *v;
struct br_mdb_config cfg;
- struct net_device *dev;
int err;
err = br_mdb_config_init(net, skb, nlh, &cfg, extack);
if (err)
return err;
- err = br_mdb_parse(skb, nlh, &dev, &entry, mdb_attrs, extack);
- if (err < 0)
- return err;
-
if (cfg.p)
vg = nbp_vlan_group(cfg.p);
else
@@ -1203,10 +1120,10 @@ static int br_mdb_del(struct sk_buff *skb, struct nlmsghdr *nlh,
list_for_each_entry(v, &vg->vlan_list, vlist) {
cfg.entry->vid = v->vid;
cfg.group.vid = v->vid;
- err = __br_mdb_del(&cfg, mdb_attrs);
+ err = __br_mdb_del(&cfg);
}
} else {
- err = __br_mdb_del(&cfg, mdb_attrs);
+ err = __br_mdb_del(&cfg);
}
return err;
--
2.37.3
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