STRUCT RPMSG_ENDPOINT_OPS(9)

👑 struct rpmsg_endpoint_ops(9) 👑

okay so bestie, welcome to the Kernel API Manual ✨ — this is the page for struct rpmsg_endpoint_ops, and honestly? she's the whole vibe check for rpmsg endpoints. let's get into it 💅

---

🌸 NAME 🌸

struct rpmsg_endpoint_ops — the indirection table for rpmsg_endpoint operations 🎀

like, it's the lil directory of function pointers that says "hey backend, here's what you gotta be able to do." no cap. 🫶

---

✨ SYNOPSIS ✨

struct rpmsg_endpoint_ops {
    void (*destroy_ept)(struct rpmsg_endpoint *ept);
    int (*send)(struct rpmsg_endpoint *ept, const void *data, int len);
    int (*sendto)(struct rpmsg_endpoint *ept, const void *data, int len,
u32 dst);
    int (*trysend)(struct rpmsg_endpoint *ept, const void *data, int
len);
    int (*trysendto)(struct rpmsg_endpoint *ept, const void *data, int
len, u32 dst);
    __poll_t (*poll)(struct rpmsg_endpoint *ept, struct file *filp,
poll_table *wait);
    int (*set_flow_control)(struct rpmsg_endpoint *ept, bool pause, u32
dst);
    ssize_t (*get_mtu)(struct rpmsg_endpoint *ept);
 };

look at her go 😭 so many function pointers, so little time 🦋

---

🎀 Members 🎀

okay let's meet the cast 💖

• destroy_ept — see rpmsg_destroy_ept. required, bestie, you literally cannot skip this one 🙈
• send — see rpmsg_send. required ✨
• sendto — see rpmsg_sendto. optional, she's flexible like that 💅
• trysend — see rpmsg_trysend. required 🔥
• trysendto — see rpmsg_trysendto. optional 🎀
• poll — see rpmsg_poll. optional ⭐
• set_flow_control — see rpmsg_set_flow_control. optional 🌈
• get_mtu — see rpmsg_get_mtu. optional 🌸

---

💜 Description 💜

This is the indirection table for the operations that a rpmsg backend should implement. iykyk 🧚

so here's the tea: in addition to destroy_ept, the backend must at least implement send and trysend — those two are non-negotiable, main character energy, periodt 👑 — while the variants that send data off-channel are optional 💀

literally: destroy_ept + send + trysend = mandatory. everything else? cute bonus content 🍓

---

🦋 SEE ALSO 🦋

• Kernel file ./drivers/rpmsg/rpmsg_internal.h
• struct rpmsg_device_ops(9)
• rpmsg_ctrldev_register_device(9)

go read those next, bestie, they're iconic too 😌

---

okay that's the whole page and you ate that ngl 💖 this lil gem lives in ./drivers/rpmsg, dated October 2026, from the Kernel API Manual — mwah, go implement those three required ops and slay ✨🎀