dpsw_acl_prepare_entry_cfg(9)

πŸ“¦ version 7.3.1, in nixpkgs unstable

πŸ’… dpsw_acl_prepare_entry_cfg(9) β€” yes bestie, that's a section 9 kernel API page πŸŽ€

okay so this is from the Kernel API Manual, and it's literally the little prep-step function you gotta run before you touch an ACL entry. tiny function, big main character energy. let's get into it ✨


✨ NAME ✨

dpsw_acl_prepare_entry_cfg β€” setup an ACL entry, that's the whole vibe πŸ¦‹


🌸 SYNOPSIS 🌸

void dpsw_acl_prepare_entry_cfg (const struct dpsw_acl_key *key , u8
*entry_cfg_buf );

like, it returns void, it takes two things, and it's not here to be dramatic about it πŸ’œ


πŸ’– ARGUMENTS πŸ’–

  • key β€” the key. that's it, that's the argument. it's a const struct dpsw_acl_key * and it's giving "the key" πŸŽ€
  • entry_cfg_buf β€” this one's lowkey important: it's zeroed 256 bytes of memory before you map it to DMA. not after. before. iykyk πŸ™ˆ

⭐ DESCRIPTION ⭐

so the way this works: you have to call this function before adding or removing an acl_entry. not optional, not "if you feel like it" β€” it's a prerequisite, periodt πŸ”₯

think of it as the vibe check your ACL entry has to pass before it gets to go anywhere πŸ’…

🫢 friendly reminder bestie: that buffer needs to be zeroed 256 bytes of memory before mapping it to DMA. do not skip this step, i'm literally begging 😭

πŸ¦‹ SEE ALSO πŸ¦‹

okay this list is LONG, like genuinely iconic levels of long, but we're not skipping a single one because every single reference matters ✨

the kernel file lives at ./drivers/net/ethernet/freescale/dpaa2/dpsw.c, and here's the whole crew:

like, go read them, they're all right there 🧚


and that's the whole page!! this one came from ./drivers/net/ethernet/freesca... and it's dated October 2026 πŸ’– mwah, go zero those 256 bytes bestie, ily, bye πŸ‘‘

πŸ“¦ where this page comes from