STRUCT NFP_RESOURCE_ENTRY(9)

✨ NAME ✨

okay bestie, we're in the Kernel API Manual and this page is literally struct nfp_resource_entry - Resource table entry. that's the whole name, no cap periodt 💅. we're gonna go through every single field together, and yes, every field is getting its moment.

🌸 SYNOPSIS 🌸

here's the struct, bestie — copied exactly so there's no mystery:

       struct nfp_resource_entry {
           struct nfp_resource_entry_mutex {
             u32 owner;
             u32 key;
           } mutex;
           struct nfp_resource_entry_region {
             u8 name[NFP_RESOURCE_ENTRY_NAME_SZ];
             u8 reserved[5];
             u8 cpp_action;
             u8 cpp_token;
             u8 cpp_target;
             u32 page_offset;
             u32 page_size;
           } region;
        };

🧚 Members 🧚

okay so the struct is giving two main pieces: mutex and region. let's unpack them like a group chat 💖

• mutex — NFP CPP Lock. that's the lock, bestie.
  • mutex.owner — NFP CPP Lock, interface owner. literally the interface owner.
  • mutex.key — NFP CPP Lock, posix_crc32(name, 8). the key is posix_crc32(name, 8), iykyk.
• region — Memory region descriptor. the region descriptor main character.
  • region.name — ASCII, zero padded name. ASCII and zero padded, exactly like it says.
  • region.reserved — padding. it's padding, that's the job.
  • region.cpp_action — CPP Action. the CPP Action field.
  • region.cpp_token — CPP Token. the CPP Token field.
  • region.cpp_target — CPP Target ID. the CPP Target ID field.
  • region.page_offset — 256-byte page offset into target's CPP address. yes, exactly that.
  • region.page_size — size, in 256-byte pages. that's the size, in 256-byte pages.

🔥 SEE ALSO 🔥

okay bestie, the kernel file is right here: ./drivers/net/ethernet/netronome/nfp/nfpcore/nfp_resource.c.

and these are the function besties you can also check out:

• nfp_resource_acquire(9)
• nfp_resource_release(9)
• nfp_resource_wait(9)
• nfp_resource_cpp_id(9)
• nfp_resource_name(9)
• nfp_resource_address(9)
• nfp_resource_size(9)
• nfp_resource_table_init(9)

byeee 💖 source/version ./drivers/net/ethernet/netrono..., dated October 2026, and it's the struct nfp_resource_entry(9) page. mwah 🫶