z_compress(9)

✨ NAME ✨

Okay bestie, this is z_compress(9) — from the Kernel API Manual — and it's literally the function that compresses a PPP packet with Deflate compression. No cap, that's the whole main-character gig. 💅

🌸 SYNOPSIS 🌸

int z_compress (void *arg , unsigned char *rptr , unsigned char *obuf ,
       int isize , int osize );

🎀 ARGUMENTS 🎀

• arg — pointer to private state for the compressor 🫶
• rptr — uncompressed packet (input) 🌸
• obuf — compressed packet (output) ✨
• isize — size of uncompressed packet 🎀
• osize — space available at obuf 🦋

💖 DESCRIPTION 💖

So what does it give back? It returns the length of the compressed packet, or 0 if the packet is incompressible. That's it — literally the whole description, and honestly iconic. 😭 If it's incompressible, 0 is your answer, bestie. Periodt.

🔥 SEE ALSO 🔥

• Kernel file: ./drivers/net/ppp/ppp_deflate.c
• z_comp_free(9)
• z_comp_alloc(9)
• z_comp_init(9)
• z_comp_reset(9)
• z_comp_stats(9)
• z_decomp_free(9)
• z_decomp_alloc(9)
• z_decomp_init(9)
• z_decomp_reset(9)
• z_decompress(9)
• z_incomp(9)

Cute footer sign-off: source ./drivers/net/ppp, date October 2026, page z_compress(9) — ty for reading bestie, mwah 🫶💖