rtrs_clt_open(9)

📦 version 7.3.1, in nixpkgs unstable

✨ rtrs_clt_open(9) ✨

okay so bestie, welcome to the Kernel API Manual ✨ today's main character is rtrs_clt_open — the function that literally opens a path to an RTRS server. yes, that one. let's get into it 💅

🦋 NAME 🦋

rtrs_clt_open — open a path to an RTRS server 🫶

🌸 SYNOPSIS 🌸

struct rtrs_clt_sess * rtrs_clt_open (struct rtrs_clt_ops *ops , const
char *pathname , const struct rtrs_addr *paths , size_t paths_num , u16
port , size_t pdu_sz , u8 reconnect_delay_sec , s16
max_reconnect_attempts , u32 nr_poll_queues );

like, look at that signature. it's giving a lot of arguments and honestly? iconic. 👑

💖 ARGUMENTS 💖

  • ops — holds the link event callback and the private pointer. your callbacks live here, no cap.
  • pathname — name of the path to an RTRS server 🛣️
  • paths — the paths to be established, defined by their src and dst addresses
  • paths_num — number of elements in the paths array (yes, you gotta count them yourself, bestie)
  • port — port to be used by the RTRS session 🔌
  • pdu_sz — size of extra payload which can be accessed after permit allocation
  • reconnect_delay_sec — time between reconnect tries ⏰
  • max_reconnect_attempts — number of times to reconnect on error before giving up, 0 for * disabled, -1 for forever. so like, -1 is the "ride or die" setting fr fr 💀
  • nr_poll_queues — number of polling mode connection using IB_POLL_DIRECT flag

🔥 DESCRIPTION 🔥

so what does it actually do? it starts session establishment with the rtrs_server. big moves. 🌈

heads up though: the function can block up to ~2000ms before it returns. that's two whole seconds of your life, so plan accordingly bestie 😭

it returns a valid pointer on success, otherwise PTR_ERR. that's the whole vibe check right there 🎀

⭐ SEE ALSO ⭐

the whole squad, assembled. go read them too, iykyk 💜

and that's the tea 🍓 this page lives in ./drivers/infiniband/ulp/rtrs and it's dated October 2026 — so yeah, future vibes only. mwah, go open some paths 🧚💖

📦 where this page comes from