// SPDX-License-Identifier: GPL-2.0-or-later
#include <net/genetlink.h>
#include <uapi/linux/mrp_bridge.h>
#include "br_private.h"
#include "br_private_mrp.h"
static const struct nla_policy br_mrp_policy[IFLA_BRIDGE_MRP_MAX + 1] = {
[IFLA_BRIDGE_MRP_UNSPEC] = { .type = NLA_REJECT },
[IFLA_BRIDGE_MRP_INSTANCE] = { .type = NLA_NESTED },
[IFLA_BRIDGE_MRP_PORT_STATE] = { .type = NLA_NESTED },
[IFLA_BRIDGE_MRP_PORT_ROLE] = { .type = NLA_NESTED },
[IFLA_BRIDGE_MRP_RING_STATE] = { .type = NLA_NESTED },
[IFLA_BRIDGE_MRP_RING_ROLE] = { .type = NLA_NESTED },
[IFLA_BRIDGE_MRP_START_TEST] = { .type = NLA_NESTED },
[IFLA_BRIDGE_MRP_IN_ROLE] = { .type = NLA_NESTED },
[IFLA_BRIDGE_MRP_IN_STATE] = { .type = NLA_NESTED },
[IFLA_BRIDGE_MRP_START_IN_TEST] = { .type = NLA_NESTED },
};
static const struct nla_policy
br_mrp_instance_policy[IFLA_BRIDGE_MRP_INSTANCE_MAX + 1] = {
[IFLA_BRIDGE_MRP_INSTANCE_UNSPEC] = { .type = NLA_REJECT },
[IFLA_BRIDGE_MRP_INSTANCE_RING_ID] = { .type = NLA_U32 },
[IFLA_BRIDGE_MRP_INSTANCE_P_IFINDEX] = { .type = NLA_U32 },
[IFLA_BRIDGE_MRP_INSTANCE_S_IFINDEX] = { .type = NLA_U32 },
[IFLA_BRIDGE_MRP_INSTANCE_PRIO] = { .type = NLA_U16 },
};
static int br_mrp_instance_parse(struct net_bridge *br, struct nlattr *attr,
int cmd, struct netlink_ext_ack *extack)
{
struct nlattr *tb[IFLA_BRIDGE_MRP_INSTANCE_MAX + 1];
struct br_mrp_instance inst;
int err;
err = nla_parse_nested(tb, IFLA_BRIDGE_MRP_INSTANCE_MAX, attr,
br_mrp_instance_policy, extack);
if (err)
return err;
if (!tb[IFLA_BRIDGE_MRP_INSTANCE_RING_ID] ||
!tb[IFLA_BRIDGE_MRP_INSTANCE_P_IFINDEX] ||
!tb[IFLA_BRIDGE_MRP_INSTANCE_S_IFINDEX]) {
NL_SET_ERR_MSG_MOD(extack,
"Missing attribute: RING_ID or P_IFINDEX or S_IFINDEX");
return -EINVAL;
}
memset(&inst, 0, sizeof(inst));
inst.ring_id = nla_get_u32(tb[IFLA_BRIDGE_MRP_INSTANCE_RING_ID]);
inst.p_ifindex = nla_get_u32(tb[IFLA_BRIDGE_MRP_INSTANCE_P_IFINDEX]);
inst.s_ifindex = nla_get_u32(tb[IFLA_BRIDGE_MRP_INSTANCE_S_IFINDEX]);
inst.prio = MRP_DEFAULT_PRIO;
if (tb[IFLA_BRIDGE_MRP_INSTANCE_PRIO])
inst.prio = nla_get_u16(tb[IFLA_BRIDGE_MRP_INSTANCE_PRIO]);
if (cmd == RTM_SETLINK)
return br_mrp_add(br, &inst);
else
return br_mrp_del(br, &inst);
return 0;
}
static const struct nla_policy
br_mrp_port_state_policy[IFLA_BRIDGE_MRP_PORT_STATE_MAX + 1] = {
[IFLA_BRIDGE_MRP_PORT_STATE_UNSPEC] = { .type = NLA_REJECT },
[IFLA_BRIDGE_MRP_PORT_STATE_STATE] = { .type = NLA_U32 },
};
static int br_mrp_port_state_parse(struct net_bridge_port *p,
struct nlattr *attr,
struct netlink_ext_ack *extack)
{
struct nlattr *tb[IFLA_BRIDGE_MRP_PORT_STATE_MAX + 1];
enum br_mrp_port_state_type state;
int err;
err = nla_parse_nested(tb, IFLA_BRIDGE_MRP_PORT_STATE_MAX, attr,
br_mrp_port_state_policy, extack);
if (err)
return err;
if (!tb[IFLA_BRIDGE_MRP_PORT_STATE_STATE]) {
NL_SET_ERR_MSG_MOD(extack, "Missing attribute: STATE");
return -EINVAL;
}
state = nla_get_u32(tb[IFLA_BRIDGE_MRP_PORT_STATE_STATE]);
return br_mrp_set_port_state(p, state);
}
static const struct nla_policy
br_mrp_port_role_policy[IFLA_BRIDGE_MRP_PORT_ROLE_MAX + 1] = {
[IFLA_BRIDGE_MRP_PORT_ROLE_UNSPEC] = { .type = NLA_REJECT },
[IFLA_BRIDGE_MRP_PORT_ROLE_ROLE] = { .type = NLA_U32 },
};
static int br_mrp_port_role_parse(struct net_bridge_port *p,
struct nlattr *attr,
struct netlink_ext_ack *extack)
{
struct nlattr *tb[IFLA_BRIDGE_MRP_PORT_ROLE_MAX + 1];
enum br_mrp_port_role_type role;
int err;
err = nla_parse_nested(tb, IFLA_BRIDGE_MRP_PORT_ROLE_MAX, attr,
br_mrp_port_role_policy, extack);
if (err)
return err;
if (!tb[IFLA_BRIDGE_MRP_PORT_ROLE_ROLE]) {
NL_SET_ERR_MSG_MOD(extack, "Missing attribute: ROLE");
return -EINVAL;
}
role = nla_get_u32(tb[IFLA_BRIDGE_MRP_PORT_ROLE_ROLE]);
return br_mrp_set_port_role(p, role);
}
static const struct nla_policy
br_mrp_ring_state_policy[IFLA_BRIDGE_MRP_RING_STATE_MAX + 1] = {
[IFLA_BRIDGE_MRP_RING_STATE_UNSPEC] = { .type = NLA_REJECT },
[IFLA_BRIDGE_MRP_RING_STATE_RING_ID] = { .type = NLA_U32 },
[IFLA_BRIDGE_MRP_RING_STATE_STATE] = { .type = NLA_U32 },
};
static int br_mrp_ring_state_parse(struct net_bridge *br, struct nlattr *attr,
struct netlink_ext_ack *extack)
{
struct nlattr *tb[IFLA_BRIDGE_MRP_RING_STATE_MAX + 1];
struct br_mrp_ring_state state;
int err;
err = nla_parse_nested(tb, IFLA_BRIDGE_MRP_RING_STATE_MAX, attr,
br_mrp_ring_state_policy, extack);
if (err)
return err;
if (!tb[IFLA_BRIDGE_MRP_RING_STATE_RING_ID] ||
!tb[IFLA_BRIDGE_MRP_RING_STATE_STATE]) {
NL_SET_ERR_MSG_MOD(extack,
"Missing attribute: RING_ID or STATE");
return -EINVAL;
}
memset(&state, 0x0, sizeof(state));
state.ring_id = nla_get_u32(tb[IFLA_BRIDGE_MRP_RING_STATE_RING_ID]);
state.ring_state = nla_get_u32(tb[IFLA_BRIDGE_MRP_RING_STATE_STATE]);
return br_mrp_set_ring_state(br, &state);
}
static const struct nla_policy
br_mrp_ring_role_policy[IFLA_BRIDGE_MRP_RING_ROLE_MAX + 1] = {
[IFLA_BRIDGE_MRP_RING_ROLE_UNSPEC] = { .type = NLA_REJECT },
[IFLA_BRIDGE_MRP_RING_ROLE_RING_ID] = { .type = NLA_U32 },
[IFLA_BRIDGE_MRP_RING_ROLE_ROLE] = { .type = NLA_U32 },
};
static int br_mrp_ring_role_parse(struct net_bridge *br, struct nlattr *attr,
struct netlink_ext_ack *extack)
{
struct nlattr *tb[IFLA_BRIDGE_MRP_RING_ROLE_MAX + 1];
struct br_mrp_ring_role role;
int err;
err = nla_parse_nested(tb, IFLA_BRIDGE_MRP_RING_ROLE_MAX, attr,
br_mrp_ring_role_policy, extack);
if (err)
return err;
if (!tb[IFLA_BRIDGE_MRP_RING_ROLE_RING_ID] ||
!tb[IFLA_BRIDGE_MRP_RING_ROLE_ROLE]) {
NL_SET_ERR_MSG_MOD(extack,
"Missing attribute: RING_ID or ROLE");
return -EINVAL;
}
memset(&role, 0x0, sizeof(role));
role.ring_id = nla_get_u32(tb[IFLA_BRIDGE_MRP_RING_ROLE_RING_ID]);
role.ring_role = nla_get_u32(tb[IFLA_BRIDGE_MRP_RING_ROLE_ROLE]);
return br_mrp_set_ring_role(br, &role);
}
static const struct nla_policy
br_mrp_start_test_policy[IFLA_BRIDGE_MRP_START_TEST_MAX + 1] = {
[IFLA_BRIDGE_MRP_START_TEST_UNSPEC] = { .type = NLA_REJECT },
[IFLA_BRIDGE_MRP_START_TEST_RING_ID] = { .type = NLA_U32 },
[IFLA_BRIDGE_MRP_START_TEST_INTERVAL] = { .type = NLA_U32 },
[IFLA_BRIDGE_MRP_START_TEST_MAX_MISS] = { .type = NLA_U32 },
[IFLA_BRIDGE_MRP_START_TEST_PERIOD] = { .type = NLA_U32 },
[IFLA_BRIDGE_MRP_START_TEST_MONITOR] = { .type = NLA_U32 },
};
static int br_mrp_start_test_parse(struct net_bridge *br, struct nlattr *attr,
struct netlink_ext_ack *extack)
{
struct nlattr *tb[IFLA_BRIDGE_MRP_START_TEST_MAX + 1];
struct br_mrp_start_test test;
int err;
err = nla_parse_nested(tb, IFLA_BRIDGE_MRP_START_TEST_MAX, attr,
br_mrp_start_test_policy, extack);
if (err)
return err;
if (!tb[IFLA_BRIDGE_MRP_START_TEST_RING_ID] ||
!tb[IFLA_BRIDGE_MRP_START_TEST_INTERVAL] ||
!tb[IFLA_BRIDGE_MRP_START_TEST_MAX_MISS] ||
!tb[IFLA_BRIDGE_MRP_START_TEST_PERIOD]) {
NL_SET_ERR_MSG_MOD(extack,
"Missing attribute: RING_ID or INTERVAL or MAX_MISS or PERIOD");
return -EINVAL;
}
memset(&test, 0x0, sizeof(test));
test.ring_id = nla_get_u32(tb[IFLA_BRIDGE_MRP_START_TEST_RING_ID]);
test.interval = nla_get_u32(tb[IFLA_BRIDGE_MRP_START_TEST_INTERVAL]);
test.max_miss = nla_get_u32(tb[IFLA_BRIDGE_MRP_START_TEST_MAX_MISS]);
test.period = nla_get_u32(tb[IFLA_BRIDGE_MRP_START_TEST_PERIOD]);
test.monitor = false;
if (tb[IFLA_BRIDGE_MRP_START_TEST_MONITOR])
test.monitor =
nla_get_u32(tb[IFLA_BRIDGE_MRP_START_TEST_MONITOR]);
return br_mrp_start_test(br, &test);
}
static const struct nla_policy
br_mrp_in_state_policy[IFLA_BRIDGE_MRP_IN_STATE_MAX + 1] = {
[IFLA_BRIDGE_MRP_IN_STATE_UNSPEC] = { .type = NLA_REJECT },
[IFLA_BRIDGE_MRP_IN_STATE_IN_ID] = { .type = NLA_U32 },
[IFLA_BRIDGE_MRP_IN_STATE_STATE] = { .type = NLA_U32 },
};
static int br_mrp_in_state_parse(struct net_bridge *br, struct nlattr *attr,
struct netlink_ext_ack *extack)
{
struct nlattr *tb[IFLA_BRIDGE_MRP_IN_STATE_MAX + 1];
struct br_mrp_in_state state;
int err;
err = nla_parse_nested(tb, IFLA_BRIDGE_MRP_IN_STATE_MAX, attr,
br_mrp_in_state_policy, extack);
if (err)
return err;
if (!tb[IFLA_BRIDGE_MRP_IN_STATE_IN_ID] ||
!tb[IFLA_BRIDGE_MRP_IN_STATE_STATE]) {
NL_SET_ERR_MSG_MOD(extack,
"Missing attribute: IN_ID or STATE");
return -EINVAL;
}
memset(&state, 0x0, sizeof(state));
state.in_id = nla_get_u32(tb[IFLA_BRIDGE_MRP_IN_STATE_IN_ID]);
state.in_state = nla_get_u32(tb[IFLA_BRIDGE_MRP_IN_STATE_STATE]);
return br_mrp_set_in_state(br, &state);
}
static const struct nla_policy
br_mrp_in_role_policy[IFLA_BRIDGE_MRP_IN_ROLE_MAX + 1] = {
[IFLA_BRIDGE_MRP_IN_ROLE_UNSPEC] = { .type = NLA_REJECT },
[IFLA_BRIDGE_MRP_IN_ROLE_RING_ID] = { .type = NLA_U32 },
[IFLA_BRIDGE_MRP_IN_ROLE_IN_ID] = { .type = NLA_U16 },
[IFLA_BRIDGE_MRP_IN_ROLE_ROLE] = { .type = NLA_U32 },
[IFLA_BRIDGE_MRP_IN_ROLE_I_IFINDEX] = { .type = NLA_U32 },
};
static int br_mrp_in_role_parse(struct net_bridge *br, struct nlattr *attr,
struct netlink_ext_ack *extack)
{
struct nlattr *tb[IFLA_BRIDGE_MRP_IN_ROLE_MAX + 1];
struct br_mrp_in_role role;
int err;
err = nla_parse_nested(tb, IFLA_BRIDGE_MRP_IN_ROLE_MAX, attr,
br_mrp_in_role_policy, extack);
if (err)
return err;
if (!tb[IFLA_BRIDGE_MRP_IN_ROLE_RING_ID] ||
!tb[IFLA_BRIDGE_MRP_IN_ROLE_IN_ID] ||
!tb[IFLA_BRIDGE_MRP_IN_ROLE_I_IFINDEX] ||
!tb[IFLA_BRIDGE_MRP_IN_ROLE_ROLE]) {
NL_SET_ERR_MSG_MOD(extack,
"Missing attribute: RING_ID or ROLE or IN_ID or I_IFINDEX");
return -EINVAL;
}
memset(&role, 0x0, sizeof(role));
role.ring_id = nla_get_u32(tb[IFLA_BRIDGE_MRP_IN_ROLE_RING_ID]);
role.in_id = nla_get_u16(tb[IFLA_BRIDGE_MRP_IN_ROLE_IN_ID]);
role.i_ifindex = nla_get_u32(tb[IFLA_BRIDGE_MRP_IN_ROLE_I_IFINDEX]);
role.in_role = nla_get_u32(tb[IFLA_BRIDGE_MRP_IN_ROLE_ROLE]);
return br_mrp_set_in_role(br, &role);
}
static const struct nla_policy
br_mrp_start_in_test_policy[IFLA_BRIDGE_MRP_START_IN_TEST_MAX + 1] = {
[IFLA_BRIDGE_MRP_START_IN_TEST_UNSPEC] = { .type = NLA_REJECT },
[IFLA_BRIDGE_MRP_START_IN_TEST_IN_ID] = { .type = NLA_U32 },
[IFLA_BRIDGE_MRP_START_IN_TEST_INTERVAL] = { .type = NLA_U32 },
[IFLA_BRIDGE_MRP_START_IN_TEST_MAX_MISS] = { .type = NLA_U32 },
[IFLA_BRIDGE_MRP_START_IN_TEST_PERIOD] = { .type = NLA_U32 },
};
static int br_mrp_start_in_test_parse(struct net_bridge *br,
struct nlattr *attr,
struct netlink_ext_ack *extack)
{
struct nlattr *tb[IFLA_BRIDGE_MRP_START_IN_TEST_MAX + 1];
struct br_mrp_start_in_test test;
int err;
err = nla_parse_nested(tb, IFLA_BRIDGE_MRP_START_IN_TEST_MAX, attr,
br_mrp_start_in_test_policy, extack);
if (err)
return err;
if (!tb[IFLA_BRIDGE_MRP_START_IN_TEST_IN_ID] ||
!tb[IFLA_BRIDGE_MRP_START_IN_TEST_INTERVAL] ||
!tb[IFLA_BRIDGE_MRP_START_IN_TEST_MAX_MISS] ||
!tb[IFLA_BRIDGE_MRP_START_IN_TEST_PERIOD]) {
NL_SET_ERR_MSG_MOD(extack,
"Missing attribute: RING_ID or INTERVAL or MAX_MISS or PERIOD");
return -EINVAL;
}
memset(&test, 0x0, sizeof(test));
test.in_id = nla_get_u32(tb[IFLA_BRIDGE_MRP_START_IN_TEST_IN_ID]);
test.interval = nla_get_u32(tb[IFLA_BRIDGE_MRP_START_IN_TEST_INTERVAL]);
test.max_miss = nla_get_u32(tb[IFLA_BRIDGE_MRP_START_IN_TEST_MAX_MISS]);
test.period = nla_get_u32(tb[IFLA_BRIDGE_MRP_START_IN_TEST_PERIOD]);
return br_mrp_start_in_test(br, &test);
}
int br_mrp_parse(struct net_bridge *br, struct net_bridge_port *p,
struct nlattr *attr, int cmd, struct netlink_ext_ack *extack)
{
struct nlattr *tb[IFLA_BRIDGE_MRP_MAX + 1];
int err;
/* When this function is called for a port then the br pointer is
* invalid, therefor set the br to point correctly
*/
if (p)
br = p->br;
if (br->stp_enabled != BR_NO_STP) {
NL_SET_ERR_MSG_MOD(extack, "MRP can't be enabled if STP is already enabled");
return -EINVAL;
}
err = nla_parse_nested(tb, IFLA_BRIDGE_MRP_MAX, attr,
br_mrp_policy, extack);
if (err)
return err;
if (tb[IFLA_BRIDGE_MRP_INSTANCE]) {
err = br_mrp_instance_parse(br, tb[IFLA_BRIDGE_MRP_INSTANCE],
cmd, extack);
if (err)
return err;
}
if (tb[IFLA_BRIDGE_MRP_PORT_STATE]) {
err = br_mrp_port_state_parse(p, tb[IFLA_BRIDGE_MRP_PORT_STATE],
extack);
if (err)
return err;
}
if (tb[IFLA_BRIDGE_MRP_PORT_ROLE]) {
err = br_mrp_port_role_parse(p, tb[IFLA_BRIDGE_MRP_PORT_ROLE],
extack);
if (err)
return err;
}
if (tb[IFLA_BRIDGE_MRP_RING_STATE]) {
err = br_mrp_ring_state_parse(br,
tb[IFLA_BRIDGE_MRP_RING_STATE],
extack);
if (err)
return err;
}
if (tb[IFLA_BRIDGE_MRP_RING_ROLE]) {
err = br_mrp_ring_role_parse(br, tb[IFLA_BRIDGE_MRP_RING_ROLE],
extack);
if (err)
return err;
}
if (tb[IFLA_BRIDGE_MRP_START_TEST]) {
err = br_mrp_start_test_parse(br,
tb[IFLA_BRIDGE_MRP_START_TEST],
extack);
if (err)
return err;
}
if (tb[IFLA_BRIDGE_MRP_IN_STATE]) {
err = br_mrp_in_state_parse(br, tb[IFLA_BRIDGE_MRP_IN_STATE],
extack);
if (err)
return err;
}
if (tb[IFLA_BRIDGE_MRP_IN_ROLE]) {
err = br_mrp_in_role_parse(br, tb[IFLA_BRIDGE_MRP_IN_ROLE],
extack);
if (err)
return err;
}
if (tb[IFLA_BRIDGE_MRP_START_IN_TEST]) {
err = br_mrp_start_in_test_parse(br,
tb[IFLA_BRIDGE_MRP_START_IN_TEST],
extack);
if (err)
return err;
}
return 0;
}
int br_mrp_fill_info(struct sk_buff *skb, struct net_bridge *br)
{
struct nlattr *tb, *mrp_tb;
struct br_mrp *mrp;
mrp_tb = nla_nest_start_noflag(skb, IFLA_BRIDGE_MRP);
if (!mrp_tb)
return -EMSGSIZE;
hlist_for_each_entry_rcu(mrp, &br->mrp_list, list) {
struct net_bridge_port *p;
tb = nla_nest_start_noflag(skb, IFLA_BRIDGE_MRP_INFO);
if (!tb)
goto nla_info_failure;
if (nla_put_u32(skb, IFLA_BRIDGE_MRP_INFO_RING_ID,
mrp->ring_id))
goto nla_put_failure;
p = rcu_dereference(mrp->p_port);
if (p && nla_put_u32(skb, IFLA_BRIDGE_MRP_INFO_P_IFINDEX,
p->dev->ifindex))
goto nla_put_failure;
p = rcu_dereference(mrp->s_port);
if (p && nla_put_u32(skb, IFLA_BRIDGE_MRP_INFO_S_IFINDEX,
p->dev->ifindex))
goto nla_put_failure;
p = rcu_dereference(mrp->i_port);
if (p && nla_put_u32(skb, IFLA_BRIDGE_MRP_INFO_I_IFINDEX,
p->dev->ifindex))
goto nla_put_failure;
if (nla_put_u16(skb, IFLA_BRIDGE_MRP_INFO_PRIO,
mrp->prio))
goto nla_put_failure;
if (nla_put_u32(skb, IFLA_BRIDGE_MRP_INFO_RING_STATE,
mrp->ring_state))
goto nla_put_failure;
if (nla_put_u32(skb, IFLA_BRIDGE_MRP_INFO_RING_ROLE,
mrp->ring_role))
goto nla_put_failure;
if (nla_put_u32(skb, IFLA_BRIDGE_MRP_INFO_TEST_INTERVAL,
mrp->test_interval))
goto nla_put_failure;
if (nla_put_u32(skb, IFLA_BRIDGE_MRP_INFO_TEST_MAX_MISS,
mrp->test_max_miss))
goto nla_put_failure;
if (nla_put_u32(skb, IFLA_BRIDGE_MRP_INFO_TEST_MONITOR,
mrp->test_monitor))
goto nla_put_failure;
if (nla_put_u32(skb, IFLA_BRIDGE_MRP_INFO_IN_STATE,
mrp->in_state))
goto nla_put_failure;
if (nla_put_u32(skb, IFLA_BRIDGE_MRP_INFO_IN_ROLE,
mrp->in_role))
goto nla_put_failure;
if (nla_put_u32(skb, IFLA_BRIDGE_MRP_INFO_IN_TEST_INTERVAL,
mrp->in_test_interval))
goto nla_put_failure;
if (nla_put_u32(skb, IFLA_BRIDGE_MRP_INFO_IN_TEST_MAX_MISS,
mrp->in_test_max_miss))
goto nla_put_failure;
nla_nest_end(skb, tb);
}
nla_nest_end(skb, mrp_tb);
return 0;
nla_put_failure:
nla_nest_cancel(skb, tb);
nla_info_failure:
nla_nest_cancel(skb, mrp_tb);
return -EMSGSIZE;
}
int br_mrp_ring_port_open(struct net_device *dev, u8 loc)
{
struct net_bridge_port *p;
int err = 0;
p = br_port_get_rcu(dev);
if (!p) {
err = -EINVAL;
goto out;
}
if (loc)
p->flags |= BR_MRP_LOST_CONT;
else
p->flags &= ~BR_MRP_LOST_CONT;
br_ifinfo_notify(RTM_NEWLINK, NULL, p);
out:
return err;
}
int br_mrp_in_port_open(struct net_device *dev, u8 loc)
{
struct net_bridge_port *p;
int err = 0;
p = br_port_get_rcu(dev);
if (!p) {
err = -EINVAL;
goto out;
}
if (loc)
p->flags |= BR_MRP_LOST_IN_CONT;
else
p->flags &= ~BR_MRP_LOST_IN_CONT;
br_ifinfo_notify(RTM_NEWLINK, NULL, p);
out:
return err;
}
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