skb_gso_validate_mac_len(9)

💖 skb_gso_validate_mac_len(9) 💖

okay so bestie, welcome to the skb_gso_validate_mac_len(9) page from the Kernel API Manual — this one is a tiny little length vibe check for GSO skbs, and it's honestly iconic ✨

🌸 NAME 🌸

skb_gso_validate_mac_len — will a split GSO skb fit in a given length? 👀

🦋 SYNOPSIS 🦋

bool skb_gso_validate_mac_len (const struct sk_buff *skb , unsigned int
       len );

🎀 ARGUMENTS 🎀

• skb — the GSO skb 💌
• len — the length you want to validate against 📏

✨ DESCRIPTION ✨

okay so skb_gso_validate_mac_len validates whether a given skb will fit a wanted len once it gets split 🔥 and yes, this check includes the L2, L3, and L4 headers plus the payload — all of it, no cap 💅

🌈 SEE ALSO 🌈

Kernel file: ./net/core/gso.c 🧚

• skb_eth_gso_segment(9)
• skb_mac_gso_segment(9)
• __skb_gso_segment(9)
• skb_gso_transport_seglen(9)
• skb_gso_network_seglen(9)
• skb_gso_mac_seglen(9)
• skb_gso_size_check(9)
• skb_gso_validate_network_len(9)

that's the page, bestie 🫶 source/version: ./net/core — date: October 2026 — go forth and validate those MAC lengths, periodt 💖