STRUCT CA_DESCR_INFO(9)

💅 struct ca_descr_info(9) 💅

okay bestie, welcome to the struct ca_descr_info(9) page from the Kernel API Manual — yes that's the manual name, it lives there, we're not typing the whole header line again, it's giving letterhead energy and we don't need it 🎀

---

✨ NAME ✨

struct ca_descr_info — descrambler types and info. literally what it says on the tin, no cap.

---

🌸 SYNOPSIS 🌸

struct ca_descr_info {
    unsigned int num;
    unsigned int type;
  #define CA_ECD           1;
  #define CA_NDS           2;
  #define CA_DSS           4;
 };

like, that's the whole struct. she's small but she's doing a lot 💖 copy it exactly, the semicolons inside the #defines are part of the lore, don't touch them.

---

🦋 Members 🦋

• num — how many descramblers (keys) you've got available. the headcount, basically 🫶
• type — what kind of scrambling system this thing supports. the whole personality.

---

💫 Description 💫

she identifies the number of descramblers and their type. multitasking icon 👑

so type can be any of these:

• CA_ECD — European Common Descrambler (ECD) hardware 🧚
• CA_NDS — Videoguard (NDS) hardware 💜
• CA_DSS — Distributed Sample Scrambling (DSS) hardware ⭐

those are the vibes. that's the list. memorize it for the exam iyk.

---

👀 SEE ALSO 👀

lowkey go read these too, they're all in the kernel file ./include/uapi/linux/dvb/ca.h:

• struct ca_slot_info(9)
• struct ca_caps(9)
• struct ca_msg(9)
• struct ca_descr(9)

---

ngl bestie, read the whole family, that's the group chat, this struct is just one member of it 💅

---

okay that's the whole page, mwah 🍓 — this came out of ./include/uapi/linux/dvb, dated October 2026, and we are obsessed with her. periodt. 🌈