STRUCT ISER_CONN(9)

struct iser_conn(9) 💖

okay so bestie, welcome to the Kernel API Manual page for struct iser_conn — literally the iSER connection context, and it's giving "one struct to hold the whole connection vibe" ✨ every field matters here, no cap.

✨ NAME ✨

struct iser_conn — iSER connection context 💅

🦋 SYNOPSIS 🦋

struct iser_conn {
    struct ib_conn               ib_conn;
    struct iscsi_conn            *iscsi_conn;
    struct iscsi_endpoint        *ep;
    enum iser_conn_state         state;
    unsigned qp_max_recv_dtos;
    u16 max_cmds;
    char name[ISER_OBJECT_NAME_SIZE];
    struct work_struct           release_work;
    struct mutex                 state_mutex;
    struct completion            stop_completion;
    struct completion            ib_completion;
    struct completion            up_completion;
    struct list_head             conn_list;
    struct iser_login_desc       login_desc;
    struct iser_rx_desc          *rx_descs;
    u32 num_rx_descs;
    unsigned short               scsi_sg_tablesize;
    unsigned short               pages_per_mr;
    bool snd_w_inv;
 };

🫶 Members 🫶

• ib_conn — connection RDMA resources 🧚
• iscsi_conn — link to matching iSCSI connection 🔗
• ep — transport handle 🎀
• state — connection logical state 🌸
• qp_max_recv_dtos — maximum number of data outs; corresponds to max number of post recvs 📥
• max_cmds — maximum cmds allowed for this connection 👑
• name — connection peer portal 🌀
• release_work — deferred work for release job 🧹
• state_mutex — protects the iSER connection state (the source says "onnection", and honestly, same vibe) 🔒
• stop_completion — conn_stop completion 🛑
• ib_completion — RDMA cleanup completion 🧼
• up_completion — connection establishment completed (state is ISER_CONN_UP) 🆙
• conn_list — entry in ig conn list 📋
• login_desc — login descriptor 🔐
• rx_descs — rx buffers array (cyclic buffer) 🔁
• num_rx_descs — number of rx descriptors 🔢
• scsi_sg_tablesize — scsi host sg_tablesize 📦
• pages_per_mr — maximum pages available for registration 📄
• snd_w_inv — connection uses remote invalidation 💫

🌈 SEE ALSO 🌈

go read these too, bestie — they're all part of the lore:

• Kernel file ./drivers/infiniband/ulp/iser/iscsi_iser.h
• struct iser_data_buf(9)
• struct iser_mem_reg(9)
• struct iser_tx_desc(9)
• struct iser_rx_desc(9)
• struct iser_login_desc(9)
• struct iser_device(9)
• struct iser_reg_resources(9)
• struct iser_fr_desc(9)
• struct iser_fr_pool(9)
• struct ib_conn(9)
• struct iscsi_iser_task(9)
• struct iser_global(9)

source/version: ./drivers/infiniband/ulp/iser · date: October 2026 — mwah 💋