STRUCT EF4_LOOPBACK_STATE(9)

✨ struct ef4_loopback_state(9) ✨

okay so bestie, welcome to the manual page for struct ef4_loopback_state — it lives in section 9 of the Kernel API Manual, and it's literally the ✨persistent state during a loopback selftest✨. that's the whole vibe. it's the little diary the driver keeps while it's doing its loopback self-test 🎀

🌸 SYNOPSIS 🌸

here's the whole struct, copied exactly so you can trust me fr fr:

struct ef4_loopback_state {
    bool flush;
    int packet_count;
    struct sk_buff **skbs;
    bool offload_csum;
    atomic_t rx_good;
    atomic_t rx_bad;
    struct ef4_loopback_payload payload;
 };

she's got seven members and every single one is doing her job 💅

💖 Members 💖

• flush — drop all the packets in ef4_loopback_rx_packet. all of them. not a single one survives 🫶
• packet_count — the number of packets being used in this test. literally the headcount for the packet party 🔥
• skbs — an array of skbs that got transmitted. yes, an array, yes of sk_buff pointers, yes I said what I said ✨
• offload_csum — checksums are being offloaded. that's it, that's the member 😌
• rx_good — RX good packet count. the good ones. the iconics 👑
• rx_bad — RX bad packet count. the flops 💀 they still get counted, fair's fair
• payload — the payload used in tests. it's a struct ef4_loopback_payload, no notes 🌸

🦋 SEE ALSO 🦋

• Kernel file ./drivers/net/ethernet/sfc/falcon/selftest.c — go read it, iykyk 📖

okay that's the whole page, no cap 🙈 this came out of ./drivers/net/ethernet/sfc/falcon and it's dated October 2026, so consider yourself fully briefed. mwah 💋💖