mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2025-02-11 04:35:49 +07:00
20f6a05ef6
This patch reworks the MRP netlink interface. Before, each attribute represented a binary structure which made it hard to be extended. Therefore update the MRP netlink interface such that each existing attribute to be a nested attribute which contains the fields of the binary structures. In this way the MRP netlink interface can be extended without breaking the backwards compatibility. It is also using strict checking for attributes under the MRP top attribute. Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com> Acked-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
317 lines
8.7 KiB
C
317 lines
8.7 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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#include <net/genetlink.h>
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#include <uapi/linux/mrp_bridge.h>
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#include "br_private.h"
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#include "br_private_mrp.h"
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static const struct nla_policy br_mrp_policy[IFLA_BRIDGE_MRP_MAX + 1] = {
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[IFLA_BRIDGE_MRP_UNSPEC] = { .type = NLA_REJECT },
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[IFLA_BRIDGE_MRP_INSTANCE] = { .type = NLA_NESTED },
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[IFLA_BRIDGE_MRP_PORT_STATE] = { .type = NLA_NESTED },
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[IFLA_BRIDGE_MRP_PORT_ROLE] = { .type = NLA_NESTED },
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[IFLA_BRIDGE_MRP_RING_STATE] = { .type = NLA_NESTED },
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[IFLA_BRIDGE_MRP_RING_ROLE] = { .type = NLA_NESTED },
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[IFLA_BRIDGE_MRP_START_TEST] = { .type = NLA_NESTED },
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};
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static const struct nla_policy
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br_mrp_instance_policy[IFLA_BRIDGE_MRP_INSTANCE_MAX + 1] = {
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[IFLA_BRIDGE_MRP_INSTANCE_UNSPEC] = { .type = NLA_REJECT },
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[IFLA_BRIDGE_MRP_INSTANCE_RING_ID] = { .type = NLA_U32 },
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[IFLA_BRIDGE_MRP_INSTANCE_P_IFINDEX] = { .type = NLA_U32 },
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[IFLA_BRIDGE_MRP_INSTANCE_S_IFINDEX] = { .type = NLA_U32 },
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};
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static int br_mrp_instance_parse(struct net_bridge *br, struct nlattr *attr,
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int cmd, struct netlink_ext_ack *extack)
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{
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struct nlattr *tb[IFLA_BRIDGE_MRP_INSTANCE_MAX + 1];
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struct br_mrp_instance inst;
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int err;
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err = nla_parse_nested(tb, IFLA_BRIDGE_MRP_INSTANCE_MAX, attr,
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br_mrp_instance_policy, extack);
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if (err)
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return err;
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if (!tb[IFLA_BRIDGE_MRP_INSTANCE_RING_ID] ||
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!tb[IFLA_BRIDGE_MRP_INSTANCE_P_IFINDEX] ||
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!tb[IFLA_BRIDGE_MRP_INSTANCE_S_IFINDEX]) {
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NL_SET_ERR_MSG_MOD(extack,
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"Missing attribute: RING_ID or P_IFINDEX or S_IFINDEX");
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return -EINVAL;
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}
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memset(&inst, 0, sizeof(inst));
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inst.ring_id = nla_get_u32(tb[IFLA_BRIDGE_MRP_INSTANCE_RING_ID]);
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inst.p_ifindex = nla_get_u32(tb[IFLA_BRIDGE_MRP_INSTANCE_P_IFINDEX]);
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inst.s_ifindex = nla_get_u32(tb[IFLA_BRIDGE_MRP_INSTANCE_S_IFINDEX]);
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if (cmd == RTM_SETLINK)
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return br_mrp_add(br, &inst);
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else
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return br_mrp_del(br, &inst);
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return 0;
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}
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static const struct nla_policy
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br_mrp_port_state_policy[IFLA_BRIDGE_MRP_PORT_STATE_MAX + 1] = {
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[IFLA_BRIDGE_MRP_PORT_STATE_UNSPEC] = { .type = NLA_REJECT },
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[IFLA_BRIDGE_MRP_PORT_STATE_STATE] = { .type = NLA_U32 },
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};
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static int br_mrp_port_state_parse(struct net_bridge_port *p,
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struct nlattr *attr,
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struct netlink_ext_ack *extack)
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{
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struct nlattr *tb[IFLA_BRIDGE_MRP_PORT_STATE_MAX + 1];
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enum br_mrp_port_state_type state;
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int err;
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err = nla_parse_nested(tb, IFLA_BRIDGE_MRP_PORT_STATE_MAX, attr,
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br_mrp_port_state_policy, extack);
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if (err)
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return err;
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if (!tb[IFLA_BRIDGE_MRP_PORT_STATE_STATE]) {
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NL_SET_ERR_MSG_MOD(extack, "Missing attribute: STATE");
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return -EINVAL;
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}
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state = nla_get_u32(tb[IFLA_BRIDGE_MRP_PORT_STATE_STATE]);
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return br_mrp_set_port_state(p, state);
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}
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static const struct nla_policy
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br_mrp_port_role_policy[IFLA_BRIDGE_MRP_PORT_ROLE_MAX + 1] = {
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[IFLA_BRIDGE_MRP_PORT_ROLE_UNSPEC] = { .type = NLA_REJECT },
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[IFLA_BRIDGE_MRP_PORT_ROLE_ROLE] = { .type = NLA_U32 },
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};
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static int br_mrp_port_role_parse(struct net_bridge_port *p,
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struct nlattr *attr,
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struct netlink_ext_ack *extack)
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{
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struct nlattr *tb[IFLA_BRIDGE_MRP_PORT_ROLE_MAX + 1];
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enum br_mrp_port_role_type role;
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int err;
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err = nla_parse_nested(tb, IFLA_BRIDGE_MRP_PORT_ROLE_MAX, attr,
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br_mrp_port_role_policy, extack);
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if (err)
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return err;
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if (!tb[IFLA_BRIDGE_MRP_PORT_ROLE_ROLE]) {
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NL_SET_ERR_MSG_MOD(extack, "Missing attribute: ROLE");
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return -EINVAL;
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}
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role = nla_get_u32(tb[IFLA_BRIDGE_MRP_PORT_ROLE_ROLE]);
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return br_mrp_set_port_role(p, role);
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}
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static const struct nla_policy
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br_mrp_ring_state_policy[IFLA_BRIDGE_MRP_RING_STATE_MAX + 1] = {
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[IFLA_BRIDGE_MRP_RING_STATE_UNSPEC] = { .type = NLA_REJECT },
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[IFLA_BRIDGE_MRP_RING_STATE_RING_ID] = { .type = NLA_U32 },
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[IFLA_BRIDGE_MRP_RING_STATE_STATE] = { .type = NLA_U32 },
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};
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static int br_mrp_ring_state_parse(struct net_bridge *br, struct nlattr *attr,
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struct netlink_ext_ack *extack)
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{
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struct nlattr *tb[IFLA_BRIDGE_MRP_RING_STATE_MAX + 1];
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struct br_mrp_ring_state state;
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int err;
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err = nla_parse_nested(tb, IFLA_BRIDGE_MRP_RING_STATE_MAX, attr,
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br_mrp_ring_state_policy, extack);
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if (err)
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return err;
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if (!tb[IFLA_BRIDGE_MRP_RING_STATE_RING_ID] ||
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!tb[IFLA_BRIDGE_MRP_RING_STATE_STATE]) {
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NL_SET_ERR_MSG_MOD(extack,
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"Missing attribute: RING_ID or STATE");
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return -EINVAL;
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}
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memset(&state, 0x0, sizeof(state));
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state.ring_id = nla_get_u32(tb[IFLA_BRIDGE_MRP_RING_STATE_RING_ID]);
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state.ring_state = nla_get_u32(tb[IFLA_BRIDGE_MRP_RING_STATE_STATE]);
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return br_mrp_set_ring_state(br, &state);
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}
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static const struct nla_policy
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br_mrp_ring_role_policy[IFLA_BRIDGE_MRP_RING_ROLE_MAX + 1] = {
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[IFLA_BRIDGE_MRP_RING_ROLE_UNSPEC] = { .type = NLA_REJECT },
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[IFLA_BRIDGE_MRP_RING_ROLE_RING_ID] = { .type = NLA_U32 },
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[IFLA_BRIDGE_MRP_RING_ROLE_ROLE] = { .type = NLA_U32 },
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};
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static int br_mrp_ring_role_parse(struct net_bridge *br, struct nlattr *attr,
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struct netlink_ext_ack *extack)
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{
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struct nlattr *tb[IFLA_BRIDGE_MRP_RING_ROLE_MAX + 1];
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struct br_mrp_ring_role role;
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int err;
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err = nla_parse_nested(tb, IFLA_BRIDGE_MRP_RING_ROLE_MAX, attr,
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br_mrp_ring_role_policy, extack);
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if (err)
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return err;
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if (!tb[IFLA_BRIDGE_MRP_RING_ROLE_RING_ID] ||
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!tb[IFLA_BRIDGE_MRP_RING_ROLE_ROLE]) {
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NL_SET_ERR_MSG_MOD(extack,
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"Missing attribute: RING_ID or ROLE");
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return -EINVAL;
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}
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memset(&role, 0x0, sizeof(role));
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role.ring_id = nla_get_u32(tb[IFLA_BRIDGE_MRP_RING_ROLE_RING_ID]);
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role.ring_role = nla_get_u32(tb[IFLA_BRIDGE_MRP_RING_ROLE_ROLE]);
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return br_mrp_set_ring_role(br, &role);
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}
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static const struct nla_policy
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br_mrp_start_test_policy[IFLA_BRIDGE_MRP_START_TEST_MAX + 1] = {
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[IFLA_BRIDGE_MRP_START_TEST_UNSPEC] = { .type = NLA_REJECT },
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[IFLA_BRIDGE_MRP_START_TEST_RING_ID] = { .type = NLA_U32 },
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[IFLA_BRIDGE_MRP_START_TEST_INTERVAL] = { .type = NLA_U32 },
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[IFLA_BRIDGE_MRP_START_TEST_MAX_MISS] = { .type = NLA_U32 },
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[IFLA_BRIDGE_MRP_START_TEST_PERIOD] = { .type = NLA_U32 },
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};
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static int br_mrp_start_test_parse(struct net_bridge *br, struct nlattr *attr,
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struct netlink_ext_ack *extack)
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{
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struct nlattr *tb[IFLA_BRIDGE_MRP_START_TEST_MAX + 1];
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struct br_mrp_start_test test;
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int err;
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err = nla_parse_nested(tb, IFLA_BRIDGE_MRP_START_TEST_MAX, attr,
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br_mrp_start_test_policy, extack);
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if (err)
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return err;
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if (!tb[IFLA_BRIDGE_MRP_START_TEST_RING_ID] ||
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!tb[IFLA_BRIDGE_MRP_START_TEST_INTERVAL] ||
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!tb[IFLA_BRIDGE_MRP_START_TEST_MAX_MISS] ||
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!tb[IFLA_BRIDGE_MRP_START_TEST_PERIOD]) {
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NL_SET_ERR_MSG_MOD(extack,
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"Missing attribute: RING_ID or INTERVAL or MAX_MISS or PERIOD");
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return -EINVAL;
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}
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memset(&test, 0x0, sizeof(test));
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test.ring_id = nla_get_u32(tb[IFLA_BRIDGE_MRP_START_TEST_RING_ID]);
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test.interval = nla_get_u32(tb[IFLA_BRIDGE_MRP_START_TEST_INTERVAL]);
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test.max_miss = nla_get_u32(tb[IFLA_BRIDGE_MRP_START_TEST_MAX_MISS]);
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test.period = nla_get_u32(tb[IFLA_BRIDGE_MRP_START_TEST_PERIOD]);
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return br_mrp_start_test(br, &test);
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}
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int br_mrp_parse(struct net_bridge *br, struct net_bridge_port *p,
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struct nlattr *attr, int cmd, struct netlink_ext_ack *extack)
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{
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struct nlattr *tb[IFLA_BRIDGE_MRP_MAX + 1];
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int err;
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/* When this function is called for a port then the br pointer is
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* invalid, therefor set the br to point correctly
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*/
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if (p)
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br = p->br;
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if (br->stp_enabled != BR_NO_STP) {
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NL_SET_ERR_MSG_MOD(extack, "MRP can't be enabled if STP is already enabled");
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return -EINVAL;
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}
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err = nla_parse_nested(tb, IFLA_BRIDGE_MRP_MAX, attr,
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br_mrp_policy, extack);
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if (err)
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return err;
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if (tb[IFLA_BRIDGE_MRP_INSTANCE]) {
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err = br_mrp_instance_parse(br, tb[IFLA_BRIDGE_MRP_INSTANCE],
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cmd, extack);
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if (err)
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return err;
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}
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if (tb[IFLA_BRIDGE_MRP_PORT_STATE]) {
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err = br_mrp_port_state_parse(p, tb[IFLA_BRIDGE_MRP_PORT_STATE],
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extack);
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if (err)
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return err;
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}
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if (tb[IFLA_BRIDGE_MRP_PORT_ROLE]) {
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err = br_mrp_port_role_parse(p, tb[IFLA_BRIDGE_MRP_PORT_ROLE],
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extack);
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if (err)
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return err;
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}
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if (tb[IFLA_BRIDGE_MRP_RING_STATE]) {
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err = br_mrp_ring_state_parse(br,
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tb[IFLA_BRIDGE_MRP_RING_STATE],
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extack);
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if (err)
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return err;
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}
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if (tb[IFLA_BRIDGE_MRP_RING_ROLE]) {
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err = br_mrp_ring_role_parse(br, tb[IFLA_BRIDGE_MRP_RING_ROLE],
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extack);
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if (err)
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return err;
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}
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if (tb[IFLA_BRIDGE_MRP_START_TEST]) {
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err = br_mrp_start_test_parse(br,
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tb[IFLA_BRIDGE_MRP_START_TEST],
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extack);
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if (err)
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return err;
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}
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return 0;
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}
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int br_mrp_port_open(struct net_device *dev, u8 loc)
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{
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struct net_bridge_port *p;
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int err = 0;
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p = br_port_get_rcu(dev);
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if (!p) {
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err = -EINVAL;
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goto out;
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}
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if (loc)
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p->flags |= BR_MRP_LOST_CONT;
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else
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p->flags &= ~BR_MRP_LOST_CONT;
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br_ifinfo_notify(RTM_NEWLINK, NULL, p);
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out:
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return err;
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}
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