STRUCT RPMSG_EPTDEV(9)

✨ struct rpmsg_eptdev(9) ✨

okay so bestie, we're in the Kernel API Manual today and this one is literally the glow-up of a struct you're gonna meet in ./drivers/rpmsg/rpmsg_char.c — it's called struct rpmsg_eptdev, and it's basically the endpoint device context 🎀 like, it holds the whole vibe of one rpmsg endpoint device. no cap. 💅

🌸 SYNOPSIS 🌸

here's the whole squad, exactly as it appears, don't @ me:

struct rpmsg_eptdev {
    struct device dev;
    struct cdev cdev;
    struct rpmsg_device *rpdev;
    struct rpmsg_channel_info chinfo;
    struct mutex ept_lock;
    struct rpmsg_endpoint *ept;
    struct rpmsg_endpoint *default_ept;
    spinlock_t queue_lock;
    struct sk_buff_head queue;
    wait_queue_head_t readq;
    bool remote_flow_restricted;
    bool remote_flow_updated;
 };

💜 Members 💜

• dev — the endpoint device itself. the main character 💫
• cdev — the cdev for the endpoint device. yes queen, char device representation ✨
• rpdev — the underlaying rpmsg device. (their spelling, not mine, keeping it 100% exact fr fr) 🫶
• chinfo — the info used to open the endpoint. like the lil guest list 📋
• ept_lock — synchronization of ept modifications. keeps everyone from touching ept at the same time, iconic 🔒
• ept — rpmsg endpoint reference, when open. note the when open — she's conditional 🦋
• default_ept — set to channel default endpoint if the default endpoint should be re-used on device open to prevent endpoint address update. iykyk, this one's doing the quiet important work 👑
• queue_lock — synchronization of queue operations. another lock, another slay 🔐
• queue — incoming message queue. the inbox, but make it kernel 🌸
• readq — wait object for incoming queue. she waits, patiently, dramatically 😭
• remote_flow_restricted — to indicate if the remote has requested for flow to be limited. the remote said "chill please" 🧊
• remote_flow_updated — to indicate if the flow control has been requested. basically the "did someone ask tho" flag 🙈

🦋 SEE ALSO 🦋

• Kernel file ./drivers/rpmsg/rpmsg_char.c — go read her, she's the whole reason this struct exists bestie 💖

💀 quick vibe check: every field above is listed exactly as the kernel declares it — don't rename anything, the compiler will absolutely notice and it will not be slay.

✨ and that's the page! ✨ this cutie came from ./drivers/rpmsg, dated October 2026, and she's filed under struct rpmsg_eptdev(9) in the Kernel API Manual — go forth and be iconic with your endpoints, bestie 🎀🫶💜