> -----Original Message----- > From: zhenwei pi [mailto:pizhenwei@xxxxxxxxxxxxx] > Sent: Thursday, February 10, 2022 4:18 PM > To: Gonglei (Arei) <arei.gonglei@xxxxxxxxxx> > Cc: jasowang@xxxxxxxxxx; virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx; > linux-crypto@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; > helei.sig11@xxxxxxxxxxxxx; mst@xxxxxxxxxx > Subject: Re: RE: [PATCH 2/3] virtio-crypto: introduce akcipher service > > >> /* The accelerator hardware is ready */ #define > >> VIRTIO_CRYPTO_S_HW_READY (1 << 0) @@ -442,6 +520,7 @@ struct > >> virtio_crypto_config { > >> __le32 reserve; > >> /* Maximum size of each crypto request's content */ > >> __le64 max_size; > >> + __le32 akcipher_algo; > >> }; > >> > > You can use the reserve attribute. Keeping 64-bit aligned. > > > >> struct virtio_crypto_inhdr { > >> -- > >> 2.25.1 > > > > Can I use the "__le32 reserve;" field directly? > > struct virtio_crypto_config { > /* See VIRTIO_CRYPTO_OP_* above */ > __le32 status; > > /* > * Maximum number of data queue > */ > __le32 max_dataqueues; > > /* > * Specifies the services mask which the device support, > * see VIRTIO_CRYPTO_SERVICE_* above > */ > __le32 crypto_services; > > /* Detailed algorithms mask */ > __le32 cipher_algo_l; > __le32 cipher_algo_h; > __le32 hash_algo; > __le32 mac_algo_l; > __le32 mac_algo_h; > __le32 aead_algo; > /* Maximum length of cipher key */ > __le32 max_cipher_key_len; > /* Maximum length of authenticated key */ > __le32 max_auth_key_len; > __le32 reserve; --> __le32 akcipher_algo; > /* Maximum size of each crypto request's content */ > __le64 max_size; > }; > Yes, I think so. Otherwise you will add other reserved field :( Regards, -Gonglei
