STRUCT EFX_CHANNEL_TYPE(9)

💖 struct efx_channel_type 💖

okay bestie, welcome to the struct efx_channel_type(9) manual page — yes, that’s the kernel API manual energy, and this struct is literally here to distinguish traffic and extra channels. no cap, that’s its whole main character job. ✨

🌸 NAME 🌸

struct efx_channel_type — distinguishes traffic and extra channels. periodt. 💅

✨ SYNOPSIS ✨

here’s the whole squad, character for character:

       struct efx_channel_type {
           void (*handle_no_channel)(struct efx_nic *);
           int (*pre_probe)(struct efx_channel *);
           void (*post_remove)(struct efx_channel *);
           void (*get_name)(struct efx_channel *, char *buf, size_t len);
           struct efx_channel *(*copy)(const struct efx_channel *);
           bool (*receive_skb)(struct efx_channel *, struct sk_buff *);
           bool (*want_txqs)(struct efx_channel *);
           bool keep_eventq;
           bool want_pio;
        };

💅 Members 💅

• handle_no_channel — handles failure to allocate an extra channel. lowkey the “oops, no extra channel” handler. 🫶
• pre_probe — sets up extra state prior to initialisation. it’s giving prep era. ✨
• post_remove — tears down extra state after finalisation, if allocated. heads up: it may be called on channels that have not been probed. 😭
• get_name — generates the channel’s name, which is used for its IRQ handler. iconic naming ceremony. 🎀
• copy — copies the channel state prior to reallocation. may be NULL if reallocation is not supported. 🦋
• receive_skb — handles an skb ready to be passed to netif_receive_skb. yes bestie, skb delivery duty. 📦
• want_txqs — determines whether this channel should have TX queues created. if NULL, TX queues are not created. no TX queues, no drama. 💀
• keep_eventq — flag for whether event queue should be kept initialised while the device is stopped. keeping it ready, fr fr. 🔥
• want_pio — flag for whether PIO buffers should be linked to this channel’s TX queues. PIO buffer link-up vibes. 🌈

🌟 SEE ALSO 🌟

kernel file ./drivers/net/ethernet/sfc/siena/net_driver.h is the home base, and you can also go give these a vibe check:

• struct efx_buffer(9)
• struct efx_special_buffer(9)
• struct efx_tx_buffer(9)
• struct efx_tx_queue(9)
• struct efx_rx_buffer(9)
• struct efx_rx_page_state(9)
• struct efx_rx_queue(9)
• struct efx_channel(9)
• struct efx_msi_context(9)
• struct efx_link_state(9)
• enum efx_phy_mode(9)
• struct efx_hw_stat_desc(9)
• struct efx_rss_context(9)
• struct efx_arfs_rule(9)
• struct efx_async_filter_insertion(9)
• struct efx_nic(9)
• struct efx_nic_type(9)

xoxo 💖 this page lives under ./drivers/net/ethernet/sfc/siena, dated October 2026, and it’s all about struct efx_channel_type(9). mwah 💋