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net: dsa: Add basic framework to support ndo_fdb functions 

Provide callbacks for ndo_fdb_add, ndo_fdb_del, and ndo_fdb_dump.

Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Guenter Roeck 2015-03-26 18:36:37 -07:00 committed by David S. Miller
parent 3f244abb53
commit 339d82626d
2 changed files with 108 additions and 0 deletions
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6
include/net/dsa.h
View File

@ -296,6 +296,12 @@ struct dsa_switch_driver {
u32 br_port_mask);
int (*port_stp_update)(struct dsa_switch *ds, int port,
u8 state);
int (*fdb_add)(struct dsa_switch *ds, int port,
const unsigned char *addr, u16 vid);
int (*fdb_del)(struct dsa_switch *ds, int port,
const unsigned char *addr, u16 vid);
int (*fdb_getnext)(struct dsa_switch *ds, int port,
unsigned char *addr, bool *is_static);
};
void register_switch_driver(struct dsa_switch_driver *type);

102
net/dsa/slave.c
View File

@ -201,6 +201,105 @@ out:
return 0;
}
static int dsa_slave_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
struct net_device *dev,
const unsigned char *addr, u16 vid, u16 nlm_flags)
{
struct dsa_slave_priv *p = netdev_priv(dev);
struct dsa_switch *ds = p->parent;
int ret = -EOPNOTSUPP;
if (ds->drv->fdb_add)
ret = ds->drv->fdb_add(ds, p->port, addr, vid);
return ret;
}
static int dsa_slave_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
struct net_device *dev,
const unsigned char *addr, u16 vid)
{
struct dsa_slave_priv *p = netdev_priv(dev);
struct dsa_switch *ds = p->parent;
int ret = -EOPNOTSUPP;
if (ds->drv->fdb_del)
ret = ds->drv->fdb_del(ds, p->port, addr, vid);
return ret;
}
static int dsa_slave_fill_info(struct net_device *dev, struct sk_buff *skb,
const unsigned char *addr, u16 vid,
bool is_static,
u32 portid, u32 seq, int type,
unsigned int flags)
{
struct nlmsghdr *nlh;
struct ndmsg *ndm;
nlh = nlmsg_put(skb, portid, seq, type, sizeof(*ndm), flags);
if (!nlh)
return -EMSGSIZE;
ndm = nlmsg_data(nlh);
ndm->ndm_family = AF_BRIDGE;
ndm->ndm_pad1 = 0;
ndm->ndm_pad2 = 0;
ndm->ndm_flags = NTF_EXT_LEARNED;
ndm->ndm_type = 0;
ndm->ndm_ifindex = dev->ifindex;
ndm->ndm_state = is_static ? NUD_NOARP : NUD_REACHABLE;
if (nla_put(skb, NDA_LLADDR, ETH_ALEN, addr))
goto nla_put_failure;
if (vid && nla_put_u16(skb, NDA_VLAN, vid))
goto nla_put_failure;
nlmsg_end(skb, nlh);
return 0;
nla_put_failure:
nlmsg_cancel(skb, nlh);
return -EMSGSIZE;
}
/* Dump information about entries, in response to GETNEIGH */
static int dsa_slave_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
struct net_device *dev,
struct net_device *filter_dev, int idx)
{
struct dsa_slave_priv *p = netdev_priv(dev);
struct dsa_switch *ds = p->parent;
unsigned char addr[ETH_ALEN] = { 0 };
int ret;
if (!ds->drv->fdb_getnext)
return -EOPNOTSUPP;
for (; ; idx++) {
bool is_static;
ret = ds->drv->fdb_getnext(ds, p->port, addr, &is_static);
if (ret < 0)
break;
if (idx < cb->args[0])
continue;
ret = dsa_slave_fill_info(dev, skb, addr, 0,
is_static,
NETLINK_CB(cb->skb).portid,
cb->nlh->nlmsg_seq,
RTM_NEWNEIGH, NLM_F_MULTI);
if (ret < 0)
break;
}
return idx;
}
static int dsa_slave_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
{
struct dsa_slave_priv *p = netdev_priv(dev);
@ -572,6 +671,9 @@ static const struct net_device_ops dsa_slave_netdev_ops = {
.ndo_change_rx_flags = dsa_slave_change_rx_flags,
.ndo_set_rx_mode = dsa_slave_set_rx_mode,
.ndo_set_mac_address = dsa_slave_set_mac_address,
.ndo_fdb_add = dsa_slave_fdb_add,
.ndo_fdb_del = dsa_slave_fdb_del,
.ndo_fdb_dump = dsa_slave_fdb_dump,
.ndo_do_ioctl = dsa_slave_ioctl,
};