fm10k_alloc_q_vector(9)

💖 fm10k_alloc_q_vector(9) — Kernel API Manual 💖

okay so bestie, welcome to the page for fm10k_alloc_q_vector from the Kernel API Manual — this is the girl whose whole job is literally just setting up one interrupt vector's memory. one. single. vector. she's not doing the whole squad, that's a different function (hi fm10k_alloc_q_vectors(9), we'll get to you 🫶).

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✨ NAME ✨

fm10k_alloc_q_vector — allocate memory for a single interrupt vector 🌸

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🎀 SYNOPSIS 🎀

int fm10k_alloc_q_vector (struct fm10k_intfc *interface , unsigned int
v_count , unsigned int v_idx , unsigned int txr_count , unsigned int
txr_idx , unsigned int rxr_count , unsigned int rxr_idx );

lowkey a lot of parameters but like. she needs them all. it's giving "seVen args and every one matters" 💅

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🦋 ARGUMENTS 🦋

• interface — the board private structure we're initializing, bestie. this is the main character we're setting up 💜
• v_count — how many q_vectors are allocated on interface; this one's for the ring interleaving math ✨
• v_idx — the index of this vector inside the interface struct 📍
• txr_count — total number of Tx rings to allocate 🔥
• txr_idx — index of the first Tx ring to allocate 🍓
• rxr_count — total number of Rx rings to allocate 🌈
• rxr_idx — index of the first Rx ring to allocate ⭐

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💀 DESCRIPTION 💀

so the whole vibe here is simple fr fr: we allocate one q_vector. that's it. that's the function. 🎀

and if that allocation fails? we return -ENOMEM. no drama, no crash, just the sad little error code and we move on 😭

ngl if you see -ENOMEM come back, that's your sign the memory said "not me today" — check your allocation path before doing anything else with the vector 🙈

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👑 SEE ALSO 👑

the source lives right here in the kernel tree, bestie:

• ./drivers/net/ethernet/intel/fm10k/fm10k_main.c

and the whole friend group 👇 (27 of them, we're not leaving anyone out, periodt):

• fm10k_init_module(9)
• fm10k_exit_module(9)
• fm10k_alloc_rx_buffers(9)
• fm10k_reuse_rx_page(9)
• fm10k_add_rx_frag(9)
• fm10k_process_skb_fields(9)
• fm10k_is_non_eop(9)
• fm10k_cleanup_headers(9)
• fm10k_receive_skb(9)
• fm10k_get_tx_pending(9)
• fm10k_tx_timeout_reset(9)
• fm10k_clean_tx_irq(9)
• fm10k_update_itr(9)
• fm10k_set_qos_queues(9)
• fm10k_set_rss_queues(9)
• fm10k_set_num_queues(9)
• fm10k_reset_num_queues(9)
• fm10k_free_q_vector(9)
• fm10k_alloc_q_vectors(9)
• fm10k_free_q_vectors(9)
• fm10k_reset_msix_capability(9)
• fm10k_init_msix_capability(9)
• fm10k_cache_ring_qos(9)
• fm10k_cache_ring_rss(9)
• fm10k_assign_rings(9)
• fm10k_init_queueing_scheme(9)
• fm10k_clear_queueing_scheme(9)

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and that's the page!! 🧚 this lil gem is served up from ./drivers/net/ethernet/intel/f... (yes it really does get cut off like that, iykyk 💅) and it's dated October 2026. go forth and allocate exactly one vector, bestie — no more, no less 💖✨🎀