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Subject[PATCH net-next v4 09/11] bridge: mrp: Implement netlink interface to configure MRP
Date
Implement netlink interface to configure MRP. The implementation
will do sanity checks over the attributes and then eventually call the MRP
interface.

Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
---
net/bridge/br_mrp_netlink.c | 91 +++++++++++++++++++++++++++++++++++++
1 file changed, 91 insertions(+)

diff --git a/net/bridge/br_mrp_netlink.c b/net/bridge/br_mrp_netlink.c
index b982db14bbf4..503896638be0 100644
--- a/net/bridge/br_mrp_netlink.c
+++ b/net/bridge/br_mrp_netlink.c
@@ -6,6 +6,97 @@
#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_EXACT_LEN,
+ .len = sizeof(struct br_mrp_instance)},
+ [IFLA_BRIDGE_MRP_PORT_STATE] = { .type = NLA_U32 },
+ [IFLA_BRIDGE_MRP_PORT_ROLE] = { .type = NLA_EXACT_LEN,
+ .len = sizeof(struct br_mrp_port_role)},
+ [IFLA_BRIDGE_MRP_RING_STATE] = { .type = NLA_EXACT_LEN,
+ .len = sizeof(struct br_mrp_ring_state)},
+ [IFLA_BRIDGE_MRP_RING_ROLE] = { .type = NLA_EXACT_LEN,
+ .len = sizeof(struct br_mrp_ring_role)},
+ [IFLA_BRIDGE_MRP_START_TEST] = { .type = NLA_EXACT_LEN,
+ .len = sizeof(struct br_mrp_start_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;
+
+ if (br->stp_enabled != BR_NO_STP) {
+ NL_SET_ERR_MSG_MOD(extack, "MRP can't be enabled if STP is already enabled\n");
+ 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]) {
+ struct br_mrp_instance *instance =
+ nla_data(tb[IFLA_BRIDGE_MRP_INSTANCE]);
+
+ if (cmd == RTM_SETLINK)
+ err = br_mrp_add(br, instance);
+ else
+ err = br_mrp_del(br, instance);
+ if (err)
+ return err;
+ }
+
+ if (tb[IFLA_BRIDGE_MRP_PORT_STATE]) {
+ enum br_mrp_port_state_type state =
+ nla_get_u32(tb[IFLA_BRIDGE_MRP_PORT_STATE]);
+
+ err = br_mrp_set_port_state(p, state);
+ if (err)
+ return err;
+ }
+
+ if (tb[IFLA_BRIDGE_MRP_PORT_ROLE]) {
+ struct br_mrp_port_role *role =
+ nla_data(tb[IFLA_BRIDGE_MRP_PORT_ROLE]);
+
+ err = br_mrp_set_port_role(p, role);
+ if (err)
+ return err;
+ }
+
+ if (tb[IFLA_BRIDGE_MRP_RING_STATE]) {
+ struct br_mrp_ring_state *state =
+ nla_data(tb[IFLA_BRIDGE_MRP_RING_STATE]);
+
+ err = br_mrp_set_ring_state(br, state);
+ if (err)
+ return err;
+ }
+
+ if (tb[IFLA_BRIDGE_MRP_RING_ROLE]) {
+ struct br_mrp_ring_role *role =
+ nla_data(tb[IFLA_BRIDGE_MRP_RING_ROLE]);
+
+ err = br_mrp_set_ring_role(br, role);
+ if (err)
+ return err;
+ }
+
+ if (tb[IFLA_BRIDGE_MRP_START_TEST]) {
+ struct br_mrp_start_test *test =
+ nla_data(tb[IFLA_BRIDGE_MRP_START_TEST]);
+
+ err = br_mrp_start_test(br, test);
+ if (err)
+ return err;
+ }
+
+ return 0;
+}
+
int br_mrp_port_open(struct net_device *dev, u8 loc)
{
struct net_bridge_port *p;
--
2.17.1
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