STRUCT IWL_RB_ALLOCATOR(9)

💖 struct iwl_rb_allocator(9) 💖

okay so bestie, welcome to the Kernel API Manual — this is the page for struct iwl_rb_allocator, aka the Rx allocator ✨ it's giving "the little struct that keeps your receive buffers fed" and honestly? iconic. 🎀

✨ SYNOPSIS ✨

here's the whole glow-up, literally copy-pasted energy but make it fashion:

struct iwl_rb_allocator {
    atomic_t req_pending;
    atomic_t req_ready;
    struct list_head rbd_allocated;
    struct list_head rbd_empty;
    spinlock_t lock;
    struct workqueue_struct *alloc_wq;
    struct work_struct rx_alloc;
 };

no cap, that's the whole thing. now let's meet the cast 🫶

🌸 Members 🌸

• req_pending — the number of requests the allcator had not processed yet. yes bestie, "allcator" — that's how the original spells it, I'm not gonna gaslight you 💀 think of it as the to-do list that's still sitting there unread in the group chat.
• req_ready — the number of requests that got honored and are ready for claiming. these ones already ate and are just waiting for somebody to come pick them up 👑
• rbd_allocated — RBDs with pages allocated and ready to be handled to the queue. this is a list of struct iwl_rx_mem_buffer. basically the fully-loaded ones, main character energy, ready to go 🦋
• rbd_empty — RBDs with no page attached, for allocator use. this is a list of struct iwl_rx_mem_buffer. the empties, the blank canvases, the "not me being unloaded rn" vibes 🙈
• lock — protects the rbd_allocated and rbd_empty lists. it's the bouncer at the door of both lists, no queue-jumping allowed 💅
• alloc_wq — work queue for background calls. the behind-the-scenes crew, lowkey carrying the whole operation 🌈
• rx_alloc — work struct for background calls. same energy, but this one's the actual work item, fr fr ⭐

heads up bestie: rbd_allocated and rbd_empty are both lists of struct iwl_rx_mem_buffer, and both of them live under lock. do not touch them without it, I'm begging 🫶

🦋 SEE ALSO 🦋

the whole friend group, in the order the page gives them:

• Kernel file ./drivers/net/wireless/intel/iwlwifi/pcie/gen1_2/internal.h
• struct iwl_rx_mem_buffer(9)
• struct iwl_rx_transfer_desc(9)
• struct iwl_rx_completion_desc(9)
• struct iwl_rx_completion_desc_bz(9)
• struct iwl_rxq(9)
• iwl_get_closed_rb_stts(9)
• enum iwl_fw_mon_dbgfs_state(9)
• enum iwl_shared_irq_flags(9)
• enum iwl_image_response_code(9)
• struct cont_rec(9)
• enum iwl_pcie_imr_status(9)
• struct iwl_txq(9)
• struct iwl_pcie_txqs(9)
• struct iwl_trans_pcie(9)
• iwl_txq_inc_wrap(9)
• iwl_txq_dec_wrap(9)

and that's the page, bestie!! 🧚💜 sourced from ./drivers/net/wireless/intel/i... (it's struct iwl_rb_allocator(9) in the Kernel API Manual), dated October 2026 — slay, see you in the next manpage, mwah 💋🎀🍓