i40e_add_pd_table_entry(9)

💖 i40e_add_pd_table_entry — from the Kernel API Manual 🎀

okay bestie, so this one is i40e_add_pd_table_entry(9) and it's literally the glow-up function that gives a page descriptor a home in the table. it's giving "let me introduce you to the table, queen" energy. ✨

---

✨ NAME ✨

i40e_add_pd_table_entry — adds a page descriptor to the specified table 🫶

---

🌸 SYNOPSIS 🌸

int i40e_add_pd_table_entry (struct i40e_hw *hw , struct i40e_hmc_info
*hc_info , u32 pd_index , struct i40e_dma_mem *rsrc_pg );

no cap, that's the whole signature. keep it exactly like that. 💅

---

🦋 ARGUMENTS 🦋

• hw — pointer to our HW structure, like the main character of the whole operation 👑
• hmc_info — pointer to the HMC configuration information structure, the blueprint bestie 🎀
• pd_index — which page descriptor index to manipulate. yes, which one. you gotta pick. 🙈
• rsrc_pg — if it's not NULL, use a preallocated page instead of allocating a new one. reuse era 💖

---

🔥 DESCRIPTION 🔥

this function is a four-step slay, in this exact order:

1. Initializes the pd entry
2. Adds pd_entry in the pd_table
3. Marks the entry valid in the i40e_hmc_pd_entry structure
4. Initializes the pd_entry's ref count to 1

and then bestie, there are assumptions. not vibes. assumptions:

1. The memory for pd should be pinned down, physically contiguous and aligned on 4K boundary and zeroed memory.
2. It should be 4K in size.

⚠️ these assumptions are for real, fr fr — pinned down, physically contiguous, 4K-aligned, zeroed, and 4K in size. if your memory isn't doing that, it's not passing the vibe check 🔥

---

🌈 SEE ALSO 🌈

• Kernel file ./drivers/net/ethernet/intel/i40e/i40e_hmc.c
• i40e_add_sd_table_entry(9), i40e_remove_pd_bp(9), i40e_prep_remove_sd_bp(9), i40e_remove_sd_bp_new(9), i40e_prep_remove_pd_page(9), i40e_remove_pd_page_new(9)

go read those too, iykyk 💜

---

and that's the whole page, bestie 🧚 this came from ./drivers/net/ethernet/intel/i40e, dated October 2026, and it's officially a i40e_add_pd_table_entry(9) moment. periodt. 💅🌸