ef4_filter_set_ipv4_full(9)

💖 ef4_filter_set_ipv4_full(9) 💖

okay so bestie, welcome to the Kernel API Manual ✨ you're literally reading the page for ef4_filter_set_ipv4_full(9) and honestly? it's giving "one function, does exactly what it says on the tin." no cap. 🫶

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🌸 NAME 🌸

ef4_filter_set_ipv4_full — specify IPv4 hosts, transport protocol and ports 💅

like, the whole entire vibe of this function is: you hand it a spec, you tell it the proto, both hosts, both ports, and it sets that up for you. iconic behaviour only. 🎀

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✨ SYNOPSIS ✨

int ef4_filter_set_ipv4_full (struct ef4_filter_spec *spec , u8 proto ,
__be32 lhost , __be16 lport , __be32 rhost , __be16 rport );

she returns an int, she takes six arguments, she's booked and busy. 💀

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🦋 ARGUMENTS 🦋

• spec — the specification you're initialising ✨ this is the main character fr, everything else gets written into her.
• proto — the transport layer protocol number 🌈 (u8, so keep it smol).
• lhost — the local host address, in network byte order 💖 (__be32, bestie, don't forget the byte order).
• lport — the local port, in network byte order 🌸 (__be16).
• rhost — the remote host address, in network byte order 👑 (__be32).
• rport — the remote port, in network byte order 🍓 (__be16).

bestie pls note: literally every address and port here is network byte order. that's not a suggestion, that's the assignment. 😭

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💜 SEE ALSO 💜

the kernel file ./drivers/net/ethernet/sfc/falcon/filter.h is where the whole fam lives, and here's the group chat 🫶:

• enum ef4_filter_match_flags(9)
• enum ef4_filter_priority(9)
• enum ef4_filter_flags(9)
• struct ef4_filter_spec(9)
• ef4_filter_set_ipv4_local(9)
• ef4_filter_set_eth_local(9)
• ef4_filter_set_uc_def(9)
• ef4_filter_set_mc_def(9)

go read them, iykyk 🧚

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aaaand that's the page!! mwah 💋 this lil number is from ./drivers/net/ethernet/sfc/falcon, dated October 2026 — slay, periodt, bye bestie! 💖✨🎀🦋🌸💅