UNION IONIC_LIF_IDENTITY(9)

💖 NAME 💖

okay so bestie, welcome to union ionic_lif_identity(9) — this is the Kernel API Manual entry for it, and it's basically the LIF identity information, but type-specific. That's the whole vibe: it's a union that describes who a LIF is, and how it presents depends on whether you're looking at the Ethernet side or the RDMA side. slay. ✨

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🎀 SYNOPSIS 🎀

here's the shape of the thing, character for character, no cap:

union ionic_lif_identity {
    struct {
      __le64 capabilities;
      struct {
        u8 version;
        u8 rsvd[3];
        __le32 max_ucast_filters;
        __le32 max_mcast_filters;
        __le16 rss_ind_tbl_sz;
        __le32 min_frame_size;
        __le32 max_frame_size;
        u8 rsvd2[2];
        __le64 hwstamp_tx_modes;
        __le64 hwstamp_rx_filters;
        u8 rsvd3[88];
        union ionic_lif_config config;
      } eth;
      struct {
        u8 version;
        u8 qp_opcodes;
        u8 admin_opcodes;
        u8 minor_version;
        __le32 npts_per_lif;
        __le32 nmrs_per_lif;
        __le32 nahs_per_lif;
        u8 max_stride;
        u8 cl_stride;
        u8 pte_stride;
        u8 rrq_stride;
        u8 rsq_stride;
        u8 dcqcn_profiles;
        u8 udma_shift;
        u8 rsvd_dimensions;
        __le64 page_size_cap;
        struct ionic_lif_logical_qtype aq_qtype;
        struct ionic_lif_logical_qtype sq_qtype;
        struct ionic_lif_logical_qtype rq_qtype;
        struct ionic_lif_logical_qtype cq_qtype;
        struct ionic_lif_logical_qtype eq_qtype;
        __le16 stats_type;
        u8 rsvd;
        u8 rcq_sign_bit;
        u8 rsvd1[160];
      } rdma;
    };
    __le32 words[478];
 };

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🌸 Members 🌸

🫶 the outer wrapper

• {unnamed_struct} — an anonymous struct. it literally has no name, it's just out here existing, main character energy but unnamed 😭
• capabilities — LIF capabilities
• eth — Ethernet identify structure

🦋 eth — the ethernet era

• eth.version — Ethernet identify structure version
• eth.rsvd — reserved byte(s)
• eth.max_ucast_filters — number of perfect unicast addresses supported
• eth.max_mcast_filters — number of perfect multicast addresses supported
• eth.min_frame_size — minimum size of frames to be sent
• eth.max_frame_size — maximum size of frames to be sent
• eth.rsvd2 — reserved byte(s)
• eth.hwstamp_tx_modes — bitmask of BIT_ULL(enum ionic_txstamp_mode)
• eth.hwstamp_rx_filters — bitmask of enum ionic_pkt_class
• eth.rsvd3 — reserved byte(s)
• eth.config — LIF config struct with features, mtu, mac, q counts

💜 rdma — the RDMA chapter

• rdma — RDMA identify structure
• rdma.version — RDMA capability version
• rdma.qp_opcodes — number of RDMA queue pair opcodes supported
• rdma.admin_opcodes — number of RDMA admin opcodes supported
• rdma.minor_version — RDMA capability minor version
• rdma.npts_per_lif — page table size per LIF
• rdma.nmrs_per_lif — number of memory regions per LIF
• rdma.nahs_per_lif — number of address handles per LIF
• rdma.max_stride — max work request stride
• rdma.cl_stride — cache line stride
• rdma.pte_stride — page table entry stride
• rdma.rrq_stride — remote RQ work request stride
• rdma.rsq_stride — remote SQ work request stride
• rdma.dcqcn_profiles — number of DCQCN profiles
• rdma.udma_shift — log2 number of queues per queue group
• rdma.rsvd_dimensions — reserved byte
• rdma.page_size_cap — supported page sizes
• rdma.aq_qtype — RDMA Admin Qtype
• rdma.sq_qtype — RDMA Send Qtype
• rdma.rq_qtype — RDMA Receive Qtype
• rdma.cq_qtype — RDMA Completion Qtype
• rdma.eq_qtype — RDMA Event Qtype
• rdma.stats_type — supported statistics type (enum ionic_lif_rdma_cap_stats)
• rdma.rsvd — reserved byte
• rdma.rcq_sign_bit — RCQ sign bit
• rdma.rsvd1 — reserved byte(s)

⭐ words

• words — word access to struct contents

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🌈 SEE ALSO 🌈

the lore is deep, bestie. the kernel file in question is ./drivers/net/ethernet/pensando/ionic/ionic_if.h struct — and it's giving extended universe:

• the command crew: struct ionic_admin_cmd(9), struct ionic_admin_comp(9), struct ionic_nop_cmd(9), struct ionic_nop_comp(9), struct ionic_dev_init_cmd(9), struct ionic_dev_init_comp(9), struct ionic_dev_reset_cmd(9), struct ionic_dev_reset_comp(9), struct ionic_dev_identify_cmd(9), struct ionic_dev_identify_comp(9), union ionic_drv_identity(9), enum ionic_dev_capability(9), union ionic_dev_identity(9)
• the LIF entry: struct ionic_lif_identify_cmd(9), struct ionic_lif_identify_comp(9), enum ionic_lif_capability(9), enum ionic_logical_qtype(9), enum ionic_q_feature(9), enum ionic_rxq_feature(9), enum ionic_txq_feature(9), enum ionic_hwstamp_bits(9), struct ionic_lif_logical_qtype(9), enum ionic_lif_state(9), union ionic_lif_config(9), enum ionic_lif_rdma_cap_stats(9), struct ionic_lif_init_cmd(9), struct ionic_lif_init_comp(9)
• the queue girls: struct ionic_q_identify_cmd(9), struct ionic_q_identify_comp(9), union ionic_q_identity(9), struct ionic_q_init_cmd(9), struct ionic_q_init_comp(9), struct ionic_txq_desc(9), struct ionic_txq_sg_elem(9), struct ionic_txq_sg_desc(9), struct ionic_txq_comp(9), struct ionic_rxq_desc(9), struct ionic_rxq_sg_elem(9), struct ionic_rxq_sg_desc(9), struct ionic_rxq_comp(9), enum ionic_pkt_class(9), struct ionic_q_control_cmd(9)
• the port posse: enum ionic_phy_type(9), enum ionic_xcvr_state(9), enum ionic_port_type(9), enum ionic_port_admin_state(9), enum ionic_port_oper_status(9), enum ionic_port_fec_type(9), enum ionic_port_pause_type(9), enum ionic_port_loopback_mode(9), struct ionic_xcvr_status(9), union ionic_port_config(9), struct ionic_port_status(9), struct ionic_port_identify_cmd(9), struct ionic_port_identify_comp(9), struct ionic_port_init_cmd(9), struct ionic_port_init_comp(9), struct ionic_port_reset_cmd(9), struct ionic_port_reset_comp(9), enum ionic_stats_ctl_cmd(9), enum ionic_txstamp_mode(9), enum ionic_port_attr(9), struct ionic_port_setattr_cmd(9), struct ionic_port_setattr_comp(9), struct ionic_port_getattr_cmd(9), struct ionic_port_getattr_comp(9)
• the LIF status + attr squad: struct ionic_lif_status(9), struct ionic_lif_reset_cmd(9), enum ionic_dev_attr(9), struct ionic_dev_setattr_cmd(9), struct ionic_dev_setattr_comp(9), struct ionic_dev_getattr_cmd(9), struct ionic_dev_getattr_comp(9), enum ionic_lif_attr(9), struct ionic_lif_setattr_cmd(9), struct ionic_lif_setattr_comp(9), struct ionic_lif_getattr_cmd(9), struct ionic_lif_getattr_comp(9), struct ionic_lif_setphc_cmd(9), struct ionic_rx_mode_set_cmd(9), struct ionic_rx_filter_add_cmd(9), struct ionic_rx_filter_add_comp(9), struct ionic_rx_filter_del_cmd(9)
• the VF besties: enum ionic_vf_link_status(9), struct ionic_vf_setattr_cmd(9), struct ionic_vf_getattr_cmd(9), struct ionic_vf_ctrl_cmd(9), struct ionic_vf_ctrl_comp(9)
• the CMB discoverers: struct ionic_discover_cmb_cmd(9), struct ionic_discover_cmb_comp(9), union ionic_cmb_region(9), union ionic_discover_cmb_identity(9)
• the QoS delegation: struct ionic_qos_identify_cmd(9), struct ionic_qos_identify_comp(9), enum ionic_qos_class_type(9), enum ionic_qos_sched_type(9), union ionic_qos_config(9), union ionic_qos_identity(9), struct ionic_qos_init_cmd(9), struct ionic_qos_reset_cmd(9), struct ionic_qos_clear_stats_cmd(9)
• the firmware + rdma ops: struct ionic_fw_download_cmd(9), enum ionic_fw_control_oper(9), struct ionic_fw_control_cmd(9), struct ionic_fw_control_comp(9), struct ionic_rdma_reset_cmd(9), struct ionic_rdma_queue_cmd(9)
• the event icons: struct ionic_notifyq_event(9), struct ionic_link_change_event(9), struct ionic_reset_event(9), struct ionic_heartbeat_event(9), struct ionic_log_event(9), struct ionic_xcvr_event(9)
• the info + regs crew: union ionic_port_identity(9), struct ionic_port_info(9), struct ionic_lif_info(9), struct ionic_hwstamp_regs(9), union ionic_dev_info_regs(9), union ionic_dev_cmd_regs(9), union ionic_dev_regs(9), struct ionic_doorbell(9)

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and that's the page, bestie — go read the header file, it ate 💅. this masterpiece comes to you from ./drivers/net/ethernet/pensand..., dated October 2026, and it signs off as union ionic_lif_identity(9) 🫶✨