STRUCT FLOW_DISSECTOR_KEY_PORTS_RANGE(9)

👑 struct flow_dissector_key_ports_range(9) — a Kernel API Manual moment

okay so bestie, welcome to the Kernel API Manual 💅 this page is literally about a lil struct with no description line to its name (the NAME section is just... the struct itself, and honestly? iconic minimalism ✨). It lives in the kernel file ./include/net/flow_dissector.h and it's giving "I hold port info and I'm not sorry about it." 🎀

✨ SYNOPSIS ✨

here's the whole vibe, character for character, no edits no cap 🫶

struct flow_dissector_key_ports_range {
    union {
      struct flow_dissector_key_ports tp;
      struct {
        struct flow_dissector_key_ports tp_min;
        struct flow_dissector_key_ports tp_max;
      };
    };
 };

like… it's a union of a single port thing and an anonymous struct holding a range of port things. the way that it just nests?? obsessed 😭

🌸 Members 🌸

• {unnamed_union} — anonymous 👻 (yes that's the whole description, she's mysterious)
• tp — port number from packet 📦 (the single-port main character)
• {unnamed_struct} — also anonymous, also mysterious 🫥
• tp_min — min port number in range 🔽 (the lower bound bestie)
• tp_max — max port number in range 🔼 (the upper bound bestie)

ngl the anonymous union + anonymous struct thing is doing a lot of heavy lifting here — that's how you get both tp and tp_min/tp_max living in the same memory. it's giving "one union, two moods" 💀

🦋 SEE ALSO 🦋

the whole friend group 🫶 (kernel file ./include/net/flow_dissector.h struct, plus):

• flow_dissector_key_control(9)
• flow_dissector_key_basic(9)
• flow_dissector_key_enc_opts(9)
• flow_dissector_key_ipv4_addrs(9)
• flow_dissector_key_ipv6_addrs(9)
• flow_dissector_key_tipc(9)
• flow_dissector_key_addrs(9)
• flow_dissector_key_arp(9)
• flow_dissector_key_ports(9)
• flow_dissector_key_icmp(9)
• flow_dissector_key_eth_addrs(9)
• flow_dissector_key_tcp(9)
• flow_dissector_key_ip(9)
• flow_dissector_key_meta(9)
• flow_dissector_key_ct(9)
• flow_dissector_key_hash(9)
• flow_dissector_key_num_of_vlans(9)
• flow_dissector_key_pppoe(9)
• flow_dissector_key_l2tpv3(9)
• flow_dissector_key_ipsec(9)
• flow_dissector_key_cfm(9)

and that's the whole page, bestie — short, sweet, and structurally loaded 💖 sign-off time: this one came from the kernel source under ./include/net, dated October 2026, and it's part of the Kernel API Manual set. slay, go read your flow dissector headers 🔥👑✨