STRUCT MLXBF_TMFIFO_VRING(9)

💖 NAME 💖

okay so bestie, this is the struct mlxbf_tmfifo_vring(9) page from the Kernel API Manual — and it's literally all about the Structure of the TmFifo virtual ring. main character struct energy, fr fr. 🎀

🦋 SYNOPSIS 🦋

here's the whole struct, copied exactly because we do not mess with code, periodt:

struct mlxbf_tmfifo_vring {
    void *va;
    dma_addr_t dma;
    struct virtqueue *vq;
    struct vring_desc *desc;
    struct vring_desc *desc_head;
    struct vring_desc drop_desc;
    int cur_len;
    int rem_len;
    int rem_padding;
    u32 pkt_len;
    u16 next_avail;
    int num;
    int align;
    int index;
    int vdev_id;
    unsigned long tx_timeout;
    struct mlxbf_tmfifo *fifo;
};

🌸 Members 🌸

let's go member by member, no skips, no cap:

• va — virtual address of the ring
• dma — dma address of the ring
• vq — pointer to the virtio virtqueue
• desc — current descriptor of the pending packet
• desc_head — head descriptor of the pending packet
• drop_desc — dummy desc for packet dropping
• cur_len — processed length of the current descriptor
• rem_len — remaining length of the pending packet
• rem_padding — remaining bytes to send as paddings
• pkt_len — total length of the pending packet
• next_avail — next avail descriptor id
• num — vring size (number of descriptors)
• align — vring alignment size
• index — vring index
• vdev_id — vring virtio id (VIRTIO_ID_xxx)
• tx_timeout — expire time of last tx packet
• fifo — pointer to the tmfifo structure

🔥 SEE ALSO 🔥

Kernel file ./drivers/platform/mellanox/mlxbf-tmfifo.c plus the whole squad: struct mlxbf_tmfifo_vdev(9), struct mlxbf_tmfifo_irq_info(9), struct mlxbf_tmfifo_io(9), struct mlxbf_tmfifo(9), and struct mlxbf_tmfifo_msg_hdr(9). go read them too, iykyk 💜

sign-off: this page is from source/version ./drivers/platform/mellanox, dated October 2026, and yes it's the struct mlxbf_tmfifo_vring(9) page. slay and goodbye 🫶✨