[PATCH v2 0/7] AES for PPC/SPE The following patches add support for 64bit accelerated AES calculation on PPC processors with SPE instruction set. Besides the AES core module it implements ECB/CBC/CTR/XTS as block ciphers. The implementation takes care of the following constraints: - save SPE registers for interrupt context compatibility - disable preemption only for short intervals - endian independant Module passes tcrypt mode=10 tests. Synthethic AES speedup factors from insmod tcrypt sec=3 mode=200 taken on e500v2 800 MHz (TP Link WDR4900) compared with the generic kernel module. key bytes ecb ecb cbc cbc ctr ctr xts xts enc dec enc dec enc dec enc dec --- ----- ---- ---- ---- ---- ---- ---- ---- ---- 128 16 1.14 1.14 1.20 1.28 1.20 1.19 1.20 1.21 128 64 1.35 1.36 1.48 1.51 1.50 1.50 1.41 1.41 128 256 1.49 1.49 1.66 1.65 1.69 1.69 1.58 1.57 128 1024 1.51 1.51 1.69 1.68 1.72 1.72 1.61 1.60 128 8192 1.52 1.52 1.70 1.68 1.73 1.73 1.62 1.61 192 16 1.14 1.15 1.22 1.28 1.21 1.21 1.22 1.23 192 64 1.36 1.37 1.48 1.49 1.49 1.50 1.41 1.41 192 256 1.48 1.48 1.63 1.63 1.65 1.65 1.56 1.55 192 1024 1.50 1.50 1.65 1.64 1.68 1.68 1.59 1.58 192 8192 1.52 1.52 1.67 1.66 1.68 1.68 1.60 1.59 256 16 1.17 1.18 1.24 1.30 1.23 1.22 1.24 1.25 256 64 1.37 1.37 1.47 1.50 1.49 1.49 1.42 1.41 256 256 1.48 1.47 1.60 1.60 1.63 1.63 1.54 1.53 256 1024 1.50 1.49 1.62 1.61 1.65 1.65 1.57 1.56 256 8192 1.50 1.49 1.63 1.62 1.66 1.66 1.58 1.57 Additionally numbers from an iperf transfer benchmark. They include the AES optimized and the SHA256 optimized module. - Server : Xeon X3470 2.93GHz - Client : Core I5 2.4GHz Windows (Shrew VPN client) - Gateway: e500v2 800 MHz (TP Link WDR4900) AES256 generic / SHA256 generic modules: > iperf.exe -c a.b.c.d -t 60 -i 10 ------------------------------------------------------------ Client connecting to a.b.c.d, TCP port 5001 TCP window size: 63.0 KByte (default) ------------------------------------------------------------ [ 3] local u.v.w.x port 50730 connected with a.b.c.d port 5001 [ ID] Interval Transfer Bandwidth [ 3] 0.0-10.0 sec 51.1 MBytes 42.9 Mbits/sec [ 3] 10.0-20.0 sec 51.9 MBytes 43.5 Mbits/sec [ 3] 20.0-30.0 sec 51.5 MBytes 43.2 Mbits/sec [ 3] 30.0-40.0 sec 51.5 MBytes 43.2 Mbits/sec [ 3] 40.0-50.0 sec 51.2 MBytes 43.0 Mbits/sec [ 3] 50.0-60.0 sec 50.6 MBytes 42.5 Mbits/sec [ 3] 0.0-60.0 sec 308 MBytes 43.0 Mbits/sec AES256 (this patch) / SHA256 (my last patch) > iperf.exe -c a.b.c.d -t 60 -i 10 ------------------------------------------------------------ Client connecting to a.b.c.d, TCP port 5001 TCP window size: 63.0 KByte (default) ------------------------------------------------------------ [ 3] local u.v.w.x port 50730 connected with a.b.c.d port 5001 [ ID] Interval Transfer Bandwidth [ 3] 0.0-10.0 sec 69.6 MBytes 58.4 Mbits/sec [ 3] 10.0-20.0 sec 69.1 MBytes 58.0 Mbits/sec [ 3] 20.0-30.0 sec 69.2 MBytes 58.1 Mbits/sec [ 3] 30.0-40.0 sec 67.1 MBytes 56.3 Mbits/sec [ 3] 40.0-50.0 sec 67.6 MBytes 56.7 Mbits/sec [ 3] 50.0-60.0 sec 65.9 MBytes 55.3 Mbits/sec [ 3] 0.0-60.0 sec 409 MBytes 57.1 Mbits/sec
**************************************************************************** Diese E-Mail enthält vertrauliche und/oder rechtlich geschützte Informationen. Wenn Sie nicht der richtige Adressat sind oder diese E-Mail irrtümlich erhalten haben, informieren Sie bitte sofort den Absender und vernichten Sie diese Mail. Das unerlaubte Kopieren sowie die unbefugte Weitergabe dieser Mail ist nicht gestattet. �ber das Internet versandte E-Mails können unter fremden Namen erstellt oder manipuliert werden. Deshalb ist diese als E-Mail verschickte Nachricht keine rechtsverbindliche Willenserklärung. Collogia Unternehmensberatung AG Ubierring 11 D-50678 Köln Vorstand: Kadir Akin Dr. Michael Höhnerbach Vorsitzender des Aufsichtsrates: Hans Kristian Langva Registergericht: Amtsgericht Köln Registernummer: HRB 52 497 This e-mail may contain confidential and/or privileged information. If you are not the intended recipient (or have received this e-mail in error) please notify the sender immediately and destroy this e-mail. Any unauthorized copying, disclosure or distribution of the material in this e-mail is strictly forbidden. e-mails sent over the internet may have been written under a wrong name or been manipulated. That is why this message sent as an e-mail is not a legally binding declaration of intention. Collogia Unternehmensberatung AG Ubierring 11 D-50678 Köln executive board: Kadir Akin Dr. Michael Höhnerbach President of the supervisory board: Hans Kristian Langva Registry office: district court Cologne Register number: HRB 52 497 ****************************************************************************