batadv_bit_get_packet(9)

🌸 batadv_bit_get_packet — NAME 🌸

okay so bestie, batadv_bit_get_packet — it receives and processes one packet within the sequence number window 💅 like it's literally the little bouncer at the door of the seq-number window, checking vibes one packet at a time ✨

this one lives in the Kernel API Manual btw, so you know it's giving official-requirements energy 👑

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🎀 SYNOPSIS 🎀

bool batadv_bit_get_packet (void *priv , unsigned long *seq_bits , s32
seq_num_diff , int set_mark );

k so that's the whole signature — four args, returns a bool, slay 💖

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🦋 ARGUMENTS 🦋

• priv — the bat priv, aka the thing holding all the mesh interface information 🫶 like every single mesh-interface detail lives in there, no cap
• seq_bits — a pointer to the sequence number bitmap of received packets 🧚 it's a bitmap, it's got bits, it's the whole point of the function honestly
• seq_num_diff — the difference between the current/received sequence number and the last sequence number 🌈 literally just "received minus last", that's the diff
• set_mark — whether this packet should be marked in seq_bits ⭐ yes or no, mark it or don't, that's the whole question

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💜 RETURN 💜

• true — the window was moved 🔥 and bestie it counts if the packet was either new or very old, both of those move the window, periodt
• false — the window was not moved/shifted 😭 it stayed exactly where it was, no shift, no movement, nothing

so when you're reading the return value, don't assume true means "fresh packet" — it genuinely means "window moved", and "very old" moves it too 🙈 that's the whole iykyk of this function

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👑 SEE ALSO 👑

• the kernel file ./net/batman-adv/bitarray.c 📁 — yes, that's the actual path, ./net/batman-adv/bitarray.c, go read it
• batadv_bitmap_shift_left(9) 🦋 the shifting sibling, the main character of the shift-left moment

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and that's the page bestie 💅✨ source and version vibes: this is from ./net/batman-adv, and the date on it is October 2026 — go off, future manual 🎀🫶💖