tcf_em_tree_match(9)

💖 tcf_em_tree_match(9) 💖

okay bestie, welcome to the Kernel API Manual ✨ this one's a lil function called tcf_em_tree_match and it's literally the vibe check for packets, no cap 🫶

---

🌸 NAME 🌸

tcf_em_tree_match — evaluate an ematch tree 🧚

like, it runs the tree and tells you if your packet slays or not 💅

---

✨ SYNOPSIS ✨

int tcf_em_tree_match (struct sk_buff *skb , struct tcf_ematch_tree
*tree , struct tcf_pkt_info *info );

three args, one int back, iconic behavior 👑

---

🎀 ARGUMENTS 🎀

• skb — the socket buffer of the packet in question 🦋 like, the actual packet we're judging. main character energy fr fr.
• tree — the ematch tree to be used for evaluation 🌸 this is the tree we're walking through, respectfully.
• info — packet information examined by classifier 💜 the classifier's little notes about the packet, iykyk.

---

🔥 DESCRIPTION 🔥

so here's the tea ☕ — this function matches skb against the ematch tree in tree by going through all the ematches, respecting their logic relations, and returning as soon as the result is obvious 💀 no wasting time, it dips out the second it knows. efficiency ate, honestly.

---

🌈 RETURN 🌈

• 1 — if the ematch tree as-one matches 🎉 or if no ematches are configured 🫶 or if ematch is just not enabled in the kernel 👑 (yes, all three get a 1, that's just how she is)
• 0 — otherwise 😭

---

🦋 SEE ALSO 🦋

• Kernel file ./include/net/pkt_cls.h
• tcf_exts_has_actions(9)
• tcf_exts_exec(9)
• struct tcf_pkt_info(9)
• struct tcf_ematch(9)
• struct tcf_ematch_tree(9)
• struct tcf_ematch_ops(9)

go read those next bestie, they're all linked up in the same lore 🌟

---

ok that's the whole page!! no notes, she's perfect 💅

and that's a wrap on this little slice of the kernel API manual, straight out of ./include/net, dated October 2026 ⭐ mwah, go match some trees 💖🎀🦋