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Diffstat (limited to 'net/bridge/br_mrp_netlink.c')
-rw-r--r--net/bridge/br_mrp_netlink.c327
1 files changed, 327 insertions, 0 deletions
diff --git a/net/bridge/br_mrp_netlink.c b/net/bridge/br_mrp_netlink.c
new file mode 100644
index 000000000000..34b3a8776991
--- /dev/null
+++ b/net/bridge/br_mrp_netlink.c
@@ -0,0 +1,327 @@
+// 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 },
+};
+
+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);
+}
+
+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;
+ }
+
+ return 0;
+}
+
+int br_mrp_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;
+}