STRUCT BRCMF_IF(9)

🌸 NAME 🌸

welcome to the Kernel API Manual corner, bestie 💖 today's main character is struct brcmf_if(9), and she is literally the interface control information. That's the name vibe: struct brcmf_if — interface control information. periodt.

✨ SYNOPSIS ✨

okay so here's the whole struct receipt, no cap — every field exactly as the kernel page gives it:

       struct brcmf_if {
           struct brcmf_pub *drvr;
           struct brcmf_cfg80211_vif *vif;
           struct net_device *ndev;
           struct work_struct multicast_work;
           struct work_struct ndoffload_work;
           struct brcmf_fws_mac_descriptor *fws_desc;
           int ifidx;
           s32 bsscfgidx;
           u8 mac_addr[ETH_ALEN];
           u8 netif_stop;
           spinlock_t netif_stop_lock;
           atomic_t pend_8021x_cnt;
           wait_queue_head_t pend_8021x_wait;
           struct in6_addr ipv6_addr_tbl[NDOL_MAX_ENTRIES];
           u8 ipv6addr_idx;
           bool fwil_fwerr;
        };

🎀 Members 🎀

these are the little lore drops for each field, bestie:

• drvr — points to device related information.
• vif — points to cfg80211 specific interface information.
• ndev — the associated network device.
• multicast_work — worker object for multicast provisioning.
• ndoffload_work — worker object for neighbor discovery offload configuration.
• fws_desc — interface specific firmware-signalling descriptor.
• ifidx — interface index in device firmware.
• bsscfgidx — index of bss associated with this interface.
• mac_addr — the assigned mac address.
• netif_stop — bitmap indicates reason why netif queues are stopped.
• netif_stop_lock — spinlock for updating netif_stop from multiple sources.
• pend_8021x_cnt — tracks outstanding number of 802.1x frames.
• pend_8021x_wait — used for signalling change in count.
• fwil_fwerr — flag indicating the fwil layer should return firmware error codes.

also in the struct but with no member blurb in the original: ipv6_addr_tbl and ipv6addr_idx. not me making up lore — just keeping the receipt 🧾💅

🦋 SEE ALSO 🦋

go peek at these, iykyk:

• Kernel file ./drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.h
• struct brcmf_ampdu_rx_reorder(9), enum brcmf_netif_stop_reason(9)

and that's the vibe check, bestie 🫶 source/version energy: ./drivers/net/wireless/broadco..., dated October 2026, and the page name is struct brcmf_if(9). periodt 💅✨