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Miller" , Eric Dumazet , Paolo Abeni , Simon Horman , Jonathan Corbet , Shuah Khan , Randy Dunlap , Shuah Khan Cc: linux-kernel@vger.kernel.org, netdev@vger.kernel.org, linux-doc@vger.kernel.org, linux-kselftest@vger.kernel.org, Hannes Reinecke , Chuck Lever , kernel-tls-handshake@lists.linux.dev, linux-nvme@lists.infradead.org, Alistair Francis , Martin Belanger References: <20261028-keyupdate-rfc-v2-0-eb5143b4c487@gmail.com> <20261028-keyupdate-rfc-v2-5-eb5143b4c487@gmail.com> Content-Language: en-US From: Hannes Reinecke In-Reply-To: <20261028-keyupdate-rfc-v2-5-eb5143b4c487@gmail.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 93661220FB X-Spam-Level: X-Rspamd-Server: rspamd2.dmz-prg2.suse.org X-Rspamd-Action: no action X-Spam-Flag: NO X-Spamd-Result: default: False [-12.00 / 50.00]; SUSE_INTERNAL_BYPASS(-9.00)[]; BAYES_HAM(-3.00)[100.00%]; SUSPICIOUS_RECIPS(1.50)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; R_DKIM_ALLOW(-0.20)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; NEURAL_HAM_SHORT(-0.20)[-1.000]; MIME_GOOD(-0.10)[text/plain]; MX_GOOD(-0.01)[]; XM_UA_NO_VERSION(0.01)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; ARC_NA(0.00)[]; FREEMAIL_TO(0.00)[gmail.com,kernel.org,queasysnail.net,davemloft.net,redhat.com,lwn.net,linuxfoundation.org,infradead.org]; RCPT_COUNT_TWELVE(0.00)[22]; MIME_TRACE(0.00)[0:+]; FREEMAIL_ENVRCPT(0.00)[gmail.com]; RCVD_TLS_ALL(0.00)[]; DKIM_TRACE(0.00)[suse.de:+]; RCVD_COUNT_TWO(0.00)[2]; FROM_EQ_ENVFROM(0.00)[]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; MID_RHS_MATCH_FROM(0.00)[]; TAGGED_RCPT(0.00)[]; RECEIVED_SPAMHAUS_BLOCKED_OPENRESOLVER(0.00)[2a07:de40:b281:106:10:150:64:167:received]; RCVD_VIA_SMTP_AUTH(0.00)[]; DBL_BLOCKED_OPENRESOLVER(0.00)[suse.de:dkim,suse.de:email,imap1.dmz-prg2.suse.org:rdns,imap1.dmz-prg2.suse.org:helo] X-Spam-Score: -12.00 On 10/28/26 2:52 PM, Martin Belanger via B4 Relay wrote: > From: Martin Belanger > > Test the in-kernel KeyUpdate on a bidirectional connection with both > traffic secrets registered on each socket: > > - registration errors: wrong length, missing key, TLS 1.2, SM4, the > RX secret before the TX secret, and a secret that does not give the > installed key; > - KeyUpdates in both directions with data around them; > - a data record, a KeyUpdate and another data record queued before > the first read; > - update_requested: the peer answers before its next data, and a > second request waits for the answer; > - splice() across a KeyUpdate; > - a key installed with TLS_TX removes the registered secrets; > - after a key installed with TLS_RX, a new update_requested is > accepted; > - TLS_TX_KEY_UPDATE on a shut down socket does not raise SIGPIPE; > - more than 8 KeyUpdates in one second, and an invalid > request_update value, end the connection. > > The keys are derived from the secrets with HKDF-Expand-Label, with the > HMAC of the kernel through AF_ALG. > > Assisted-by: LLM > Signed-off-by: Martin Belanger > --- > tools/testing/selftests/net/config | 4 + > tools/testing/selftests/net/tls.c | 412 +++++++++++++++++++++++++++++++++++++ > 2 files changed, 416 insertions(+) > Reviewed-by: Hannes Reinecke Cheers, Hannes -- Dr. Hannes Reinecke Kernel Storage Architect hare@suse.de +49 911 74053 688 SUSE Software Solutions GmbH, Frankenstr. 146, 90461 Nürnberg HRB 36809 (AG Nürnberg), GF: I. Totev, A. McDonald, W. Knoblich