batadv_seq_after(9)

✨ batadv_seq_after(9) ✨

okay so this is a page from the Kernel API Manual and honestly? it's a little baddie 💅

🌸 NAME 🌸

batadv_seq_after — checks if a sequence number x is a successor of y 🫶

🦋 SYNOPSIS 🦋

batadv_seq_after (x , y );

🎀 ARGUMENTS 🎀

• x — the potential successor of y, like, the one auditioning for the role 👀
• y — the value we're comparing x against, the main character that everyone gets measured up to

💖 DESCRIPTION 💖

okay bestie so here's the tea: this one handles overflows and underflows, and it can correctly check for a successor unless the variable sequence number has grown by more than 2**(bitwidth(x)-1)-1. so like. it's giving "works great, within reason" ✨

which means, for a u8 with the maximum value 255, it would think:

• when adding nothing — it is neither a predecessor nor a successor 😐
• before adding more than 127 to the starting value — it is a predecessor
• when adding 128 — it is neither a predecessor nor a successor 😭
• after adding more than 127 to the starting value — it is a successor 🔥

ngl the middle ones are kinda the awkward "it's complicated" of sequence numbers 💀

⭐ RETURN ⭐

true when x is a successor of y, false otherwise. simple, iconic, no notes 👑

🌈 SEE ALSO 🌈

• Kernel file ./net/batman-adv/main.h
• BATADV_TP_MAX_NUM(9)
• enum batadv_mesh_state(9)
• enum batadv_uev_action(9)
• enum batadv_uev_type(9)
• batadv_print_vid(9)
• batadv_compare_eth(9)
• batadv_has_timed_out(9)
• batadv_atomic_dec_not_zero(9)
• batadv_smallest_signed_int(9)
• batadv_seq_before(9)
• batadv_add_counter(9)
• batadv_inc_counter(9)
• BATADV_SKB_CB(9)

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okay that's the whole thing, you ate that 🍓 this was ./net/batman-adv, October 2026, batadv_seq_after(9) — mwah, go slay some sequence numbers, ily 🧚💜