STRUCT SRPT_PORT(9)

💖 NAME 💖

okay bestie, welcome to struct srpt_port(9) from the Kernel API Manual — it's literally the SRPT RDMA port information struct, and it's kind of the main character here. ✨

🎀 SYNOPSIS 🎀

struct srpt_port {
    struct srpt_device      *sdev;
    struct ib_mad_agent     *mad_agent;
    bool enabled;
    u8 port;
    u32 sm_lid;
    u32 lid;
    union ib_gid            gid;
    struct work_struct      work;
    char guid_name[64];
    struct srpt_port_id     *guid_id;
    char gid_name[64];
    struct srpt_port_id     *gid_id;
    struct srpt_port_attrib port_attrib;
    atomic_t refcount;
    struct completion       *freed_channels;
    struct mutex            mutex;
    struct list_head        nexus_list;
 };

🌸 Members 🌸

• sdev — backpointer to the HCA information. iconic little link back home 💅
• mad_agent — per-port management datagram processing information.
• enabled — whether or not this target port is enabled. vibe check: on or off? ✅
• port — one-based port number.
• sm_lid — cached value of the port's sm_lid.
• lid — cached value of the port's lid.
• gid — cached value of the port's gid.
• work — work structure for refreshing the aforementioned cached values. bestie is doing refresh duty 🔁
• guid_name — port name in GUID format.
• guid_id — LIO target port information for the port name in GUID format.
• gid_name — port name in GID format.
• gid_id — LIO target port information for the port name in GID format.
• port_attrib — port attributes that can be accessed through configfs.
• refcount — number of objects associated with this port.
• freed_channels — completion that will be signaled once refcount becomes 0.
• mutex — protects nexus_list. no fighting in the group chat 🔒
• nexus_list — nexus list. see also srpt_nexus.entry.

👑 SEE ALSO 👑

Kernel file: ./drivers/infiniband/ulp/srpt/ib_srpt.h

Also go peek at the whole friend group: enum srpt_command_state(9), struct srpt_ioctx(9), struct srpt_recv_ioctx(9), struct srpt_send_ioctx(9), enum rdma_ch_state(9), struct srpt_rdma_ch(9), struct srpt_nexus(9), struct srpt_port_attrib(9), struct srpt_tpg(9), struct srpt_port_id(9), struct srpt_device(9) 🫶

xoxo, your kernel bestie 💖 — source/version: ./drivers/infiniband/ulp/srpt, date: October 2026, page: struct srpt_port(9) 🌈