STRUCT SIENA_NIC_DATA(9)

💅 struct siena_nic_data(9) 💅

okay so bestie, this is from the Kernel API Manual, and it's literally the whole vibe of the Siena NIC state — like, every single thing this driver needs to remember about itself lives in here. no cap. let's get into it 🫶

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✨ NAME ✨

struct siena_nic_data — the Siena NIC state. that's it, that's the whole thing, and honestly? iconic.

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🌸 SYNOPSIS 🌸

here's the struct, bestie, copied exactly so nobody comes for me:

struct siena_nic_data {
    struct efx_nic *efx;
    int wol_filter_id;
    u64 stats[SIENA_STAT_COUNT];
  #ifdef CONFIG_SFC_SIENA_SRIOV;
    struct siena_vf *vf;
    struct efx_channel *vfdi_channel;
    unsigned vf_buftbl_base;
    struct efx_buffer vfdi_status;
    struct list_head local_addr_list;
    struct list_head local_page_list;
    struct mutex local_lock;
    struct work_struct peer_work;
  #endif;
 };

👀 notice the last four-ish fields are fenced behind #ifdef CONFIG_SFC_SIENA_SRIOV; — so they only show up when that config is on. keep that in mind, it's giving conditional realness.

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🎀 Members 🎀

every field, one by one, no skipping, no "lol I'll summarise later" — that's not how we do it here 💅

• efx — pointer back to the main interface structure. like a little "home" link for the driver 🏠
• wol_filter_id — the Wake-on-LAN packet filter id. yes, the thing that wakes your machine up from its nap 😴
• stats — the hardware statistics. hardware. statistics. say it with me 🔥
• vf — array of struct siena_vf objects.
• vf_buftbl_base — the zeroth buffer table index used to back VF queues. zeroth!! index zero!! very main character energy 👑
• vfdi_status — common VFDI status page to be dmad to VF address space.
• local_addr_list — list of local addresses. protected by local_lock. ⚠️
• local_page_list — list of DMA addressable pages used to broadcast local_addr_list. protected by local_lock. ⚠️
• local_lock — the mutex protecting local_addr_list and local_page_list. the bodyguard, fr fr 🛡️
• peer_work — work item to broadcast peer addresses to VMs.

🙈 tiny aside: vfdi_channel is chillin' in the struct up there but this page doesn't hand you a description for it — so I'm not gonna invent one. we don't make stuff up in this house.

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🦋 SEE ALSO 🦋

go touch grass in the kernel source, the file is right here:

• Kernel file ./drivers/net/ethernet/sfc/siena/nic.h

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and that's the whole page, bestie — slay 💜

🌈 cute sign-off time: this gem comes from ./drivers/net/ethernet/sfc/siena, dated October 2026, and it's filed under struct siena_nic_data(9). periodt. ✨