STRUCT EFX_REP(9)

✨ struct efx_rep(9) ✨

okay so bestie, welcome to the Kernel API Manual 💖 this one is all about struct efx_rep and honestly? it's giving "private data for an Efx representor" and we're obsessed. let's get into it 🎀

🌸 NAME 🌸

struct efx_rep — private data for an Efx representor, no cap 💅

🦋 SYNOPSIS 🦋

struct efx_rep {
    struct efx_nic *parent;
    struct net_device *net_dev;
    u32 msg_enable;
    u32 mport;
    unsigned int idx;
    unsigned int write_index, read_index;
    unsigned int rx_pring_size;
    struct efx_tc_flow_rule dflt;
    struct list_head list;
    struct list_head rx_list;
    spinlock_t rx_lock;
    struct napi_struct napi;
    struct efx_rep_sw_stats stats;
    struct devlink_port *dl_port;
 };

like, that's the whole squad right there 👑 every single one of these fields is a main character in their own way:

• parent — the efx PF that manages this representor, literally the mom friend of the struct 🫶
• net_dev — the representor netdevice, that's its whole identity fr fr
• msg_enable — log message enable flags, aka the volume knob for how chatty it gets 🗣️
• mport — m-port ID of the corresponding VF, you know the vibe 😌
• idx — VF index, its little number in the lineup ✨
• write_index — number of packets enqueued to rx_list 📥
• read_index — number of packets consumed from rx_list 📤
• rx_pring_size — max length of the RX list, the limit bestie, the ceiling 🚧
• dflt — default-rule for MAE switching, the fallback plan when nobody's picking 🎀
• list — entry on efx->vf_reps, it's on the list (literally) 💀
• rx_list — list of SKBs queued for receive in NAPI poll, the queue of destiny 🌈
• rx_lock — protects rx_list, do NOT skip the lock bestie, that's how you get chaos 😭
• napi — NAPI control structure, iconic, no notes ⭐
• stats — software traffic counters for netdev stats, the receipts 📊
• dl_port — devlink port associated to this netdev representor, the linked bestie 🔗

reminder bestie: rx_lock protects rx_list. that's not a suggestion, that's the whole point. miss it and it's giving undefined chaos 💀

🧚 SEE ALSO 🧚

• Kernel file ./drivers/net/ethernet/sfc/ef100_rep.h — go read it, iykyk 📖✨

and that's the page!! mwah 💋 this little beauty lives in ./drivers/net/ethernet/sfc and it's dated October 2026 — so like, future iconic behavior 👑✨ go forth and represent, bestie 🦋💖