netdev - Re: [PATCH net-next v8 07/15] quic: add connection id management

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Message-ID: <9621f01f-5c89-4d13-9997-b4066b7e9d16@redhat.com>
Date: Thu, 29 Jan 2026 13:33:11 +0100
From: Paolo Abeni <pabeni@...hat.com>
To: Xin Long <lucien.xin@...il.com>, network dev <netdev@...r.kernel.org>,
 quic@...ts.linux.dev
Cc: davem@...emloft.net, kuba@...nel.org, Eric Dumazet <edumazet@...gle.com>,
 Simon Horman <horms@...nel.org>, Stefan Metzmacher <metze@...ba.org>,
 Moritz Buhl <mbuhl@...nbsd.org>, Tyler Fanelli <tfanelli@...hat.com>,
 Pengtao He <hepengtao@...omi.com>, Thomas Dreibholz <dreibh@...ula.no>,
 linux-cifs@...r.kernel.org, Steve French <smfrench@...il.com>,
 Namjae Jeon <linkinjeon@...nel.org>, Paulo Alcantara <pc@...guebit.com>,
 Tom Talpey <tom@...pey.com>, kernel-tls-handshake@...ts.linux.dev,
 Chuck Lever <chuck.lever@...cle.com>, Jeff Layton <jlayton@...nel.org>,
 Steve Dickson <steved@...hat.com>, Hannes Reinecke <hare@...e.de>,
 Alexander Aring <aahringo@...hat.com>, David Howells <dhowells@...hat.com>,
 Matthieu Baerts <matttbe@...nel.org>, John Ericson <mail@...nericson.me>,
 Cong Wang <xiyou.wangcong@...il.com>, "D . Wythe"
 <alibuda@...ux.alibaba.com>, Jason Baron <jbaron@...mai.com>,
 illiliti <illiliti@...tonmail.com>, Sabrina Dubroca <sd@...asysnail.net>,
 Marcelo Ricardo Leitner <marcelo.leitner@...il.com>,
 Daniel Stenberg <daniel@...x.se>,
 Andy Gospodarek <andrew.gospodarek@...adcom.com>
Subject: Re: [PATCH net-next v8 07/15] quic: add connection id management

On 1/26/26 3:51 PM, Xin Long wrote:
> This patch introduces 'struct quic_conn_id_set' for managing Connection
> IDs (CIDs), which are represented by 'struct quic_source_conn_id'
> and 'struct quic_dest_conn_id'.
> 
> It provides helpers to add and remove CIDs from the set, and handles
> insertion of source CIDs into the global connection ID hash table
> when necessary.
> 
> - quic_conn_id_add(): Add a new Connection ID to the set, and inserts
>   it to conn_id hash table if it is a source conn_id.
> 
> - quic_conn_id_remove(): Remove connection IDs the set with sequence
>   numbers less than or equal to a number.
> 
> It also adds utilities to look up CIDs by value or sequence number,
> search the global hash table for incoming packets, and check for
> stateless reset tokens among destination CIDs. These functions are
> essential for RX path connection lookup and stateless reset processing.
> 
> - quic_conn_id_find(): Find a Connection ID in the set by seq number.
> 
> - quic_conn_id_lookup(): Lookup a Connection ID from global hash table
>   using the ID value, typically used for socket lookup on the RX path.
> 
> - quic_conn_id_token_exists(): Check if a stateless reset token exists
>   in any dest Connection ID (used during stateless reset processing).
> 
> Note source/dest conn_id set is per socket, the operations on it are
> always pretected by the sock lock.
> 
> Signed-off-by: Xin Long <lucien.xin@...il.com>

Acked-by: Paolo Abeni <pabeni@...hat.com>