flow_rule_i...ontrol_flags(9)

💅 flow_rule_is_supp_enc_control_flags — like, the whole vibe

okay so bestie, welcome to the Kernel API Manual ✨ this one's about a lil function called flow_rule_is_supp_enc_control_flags, and yes the header got cut off as flow_rule_i...ontrol_flags(9) because apparently even manpages need a ✨moment✨. anyway. she's a small function. she checks things. let's go 🎀

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🌸 NAME 🌸

flow_rule_is_supp_enc_control_flags — check for supported control flags. that's it. that's the whole job. she does one thing and she does it iconically 💅

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✨ SYNOPSIS ✨

bool flow_rule_is_supp_enc_control_flags (const u32 supp_enc_flags ,
const u32 enc_ctrl_flags , struct netlink_ext_ack *extack );

so she takes three things and hands you back a bool. no cap, that's the whole signature 🫶

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🦋 ARGUMENTS 🦋

• supp_enc_flags — the encapsulation control flags that the driver supports. like, what the driver is actually down for. her comfort zone 💖
• enc_ctrl_flags — the encapsulation control flags that are actually present in the rule. the ones we're lowkey trying to vibe-check 👀
• extack — the netlink extended ACK, used for reporting errors. she's the one who tells you what went wrong, so be nice to her 😭

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🔥 RETURN 🔥

true if only supported control flags are set, false otherwise. literally binary. fr fr ⭐

ngl that's the entire contract — if something unsupported sneaks in, she's gonna say false and you're gonna have to deal with it 💀

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🧚 SEE ALSO 🧚

• Kernel file ./include/net/flow_offload.h — go read her, she's got the lore 📖
• flow_offload_has_one_action(9)
• flow_rule_is_supp_control_flags(9)
• flow_rule_has_control_flags(9)
• flow_rule_has_enc_control_flags(9)
• flow_rule_match_has_control_flags(9)

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shoutout to ./include/net for being the source home of all this, and to October 2026 for the timestamp — she's ahead of her time, main character energy only 👑

ok bye bestie, go check those flags 💜🌈