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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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c6676e7d62
A node that has the MRA role, it can behave as MRM or MRC. Initially it starts as MRM and sends MRP_Test frames on both ring ports. If it detects that there are MRP_Test send by another MRM, then it checks if these frames have a lower priority than itself. In this case it would send MRP_Nack frames to notify the other node that it needs to stop sending MRP_Test frames. If it receives a MRP_Nack frame then it stops sending MRP_Test frames and starts to behave as a MRC but it would continue to monitor the MRP_Test frames send by MRM. If at a point the MRM stops to send MRP_Test frames it would get the MRM role and start to send MRP_Test frames. Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com> Signed-off-by: David S. Miller <davem@davemloft.net>
123 lines
2.3 KiB
C
123 lines
2.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
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#ifndef _UAPI_LINUX_MRP_BRIDGE_H_
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#define _UAPI_LINUX_MRP_BRIDGE_H_
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#include <linux/types.h>
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#include <linux/if_ether.h>
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#define MRP_MAX_FRAME_LENGTH 200
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#define MRP_DEFAULT_PRIO 0x8000
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#define MRP_DOMAIN_UUID_LENGTH 16
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#define MRP_VERSION 1
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#define MRP_FRAME_PRIO 7
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#define MRP_OUI_LENGTH 3
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#define MRP_MANUFACTURE_DATA_LENGTH 2
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enum br_mrp_ring_role_type {
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BR_MRP_RING_ROLE_DISABLED,
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BR_MRP_RING_ROLE_MRC,
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BR_MRP_RING_ROLE_MRM,
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BR_MRP_RING_ROLE_MRA,
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};
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enum br_mrp_ring_state_type {
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BR_MRP_RING_STATE_OPEN,
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BR_MRP_RING_STATE_CLOSED,
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};
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enum br_mrp_port_state_type {
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BR_MRP_PORT_STATE_DISABLED,
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BR_MRP_PORT_STATE_BLOCKED,
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BR_MRP_PORT_STATE_FORWARDING,
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BR_MRP_PORT_STATE_NOT_CONNECTED,
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};
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enum br_mrp_port_role_type {
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BR_MRP_PORT_ROLE_PRIMARY,
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BR_MRP_PORT_ROLE_SECONDARY,
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BR_MRP_PORT_ROLE_NONE,
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};
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enum br_mrp_tlv_header_type {
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BR_MRP_TLV_HEADER_END = 0x0,
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BR_MRP_TLV_HEADER_COMMON = 0x1,
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BR_MRP_TLV_HEADER_RING_TEST = 0x2,
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BR_MRP_TLV_HEADER_RING_TOPO = 0x3,
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BR_MRP_TLV_HEADER_RING_LINK_DOWN = 0x4,
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BR_MRP_TLV_HEADER_RING_LINK_UP = 0x5,
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BR_MRP_TLV_HEADER_OPTION = 0x7f,
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};
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enum br_mrp_sub_tlv_header_type {
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BR_MRP_SUB_TLV_HEADER_TEST_MGR_NACK = 0x1,
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BR_MRP_SUB_TLV_HEADER_TEST_PROPAGATE = 0x2,
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BR_MRP_SUB_TLV_HEADER_TEST_AUTO_MGR = 0x3,
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};
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struct br_mrp_tlv_hdr {
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__u8 type;
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__u8 length;
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};
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struct br_mrp_sub_tlv_hdr {
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__u8 type;
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__u8 length;
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};
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struct br_mrp_end_hdr {
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struct br_mrp_tlv_hdr hdr;
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};
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struct br_mrp_common_hdr {
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__be16 seq_id;
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__u8 domain[MRP_DOMAIN_UUID_LENGTH];
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};
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struct br_mrp_ring_test_hdr {
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__be16 prio;
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__u8 sa[ETH_ALEN];
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__be16 port_role;
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__be16 state;
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__be16 transitions;
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__be32 timestamp;
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};
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struct br_mrp_ring_topo_hdr {
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__be16 prio;
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__u8 sa[ETH_ALEN];
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__be16 interval;
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};
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struct br_mrp_ring_link_hdr {
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__u8 sa[ETH_ALEN];
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__be16 port_role;
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__be16 interval;
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__be16 blocked;
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};
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struct br_mrp_sub_opt_hdr {
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__u8 type;
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__u8 manufacture_data[MRP_MANUFACTURE_DATA_LENGTH];
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};
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struct br_mrp_test_mgr_nack_hdr {
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__be16 prio;
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__u8 sa[ETH_ALEN];
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__be16 other_prio;
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__u8 other_sa[ETH_ALEN];
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};
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struct br_mrp_test_prop_hdr {
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__be16 prio;
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__u8 sa[ETH_ALEN];
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__be16 other_prio;
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__u8 other_sa[ETH_ALEN];
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};
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struct br_mrp_oui_hdr {
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__u8 oui[MRP_OUI_LENGTH];
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};
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#endif
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