On Thu, Jul 10, 2025 at 08:24:57PM +0800, Chenghai Huang wrote: > From: Wenkai Lin <linwenkai6@xxxxxxxxxxxxx> > > This patch introduces a hierarchical backlog mechanism to cache > user data in high-throughput encryption/decryption scenarios, > the implementation addresses packet loss issues when hardware > queues overflow during peak loads. > > First, we use sec_alloc_req_id to obtain an exclusive resource > from the pre-allocated resource pool of each queue, if no resource > is allocated, perform the DMA map operation on the request memory. > > When the task is ready, we will attempt to send it to the hardware, > if the hardware queue is already full, we cache the request into > the backlog list, then return an EBUSY status to the upper layer > and instruct the packet-sending thread to pause transmission. > Simultaneously, when the hardware completes a task, it triggers > the sec callback function, within this function, reattempt to send > the requests from the backlog list and wake up the sending thread > until the hardware queue becomes fully occupied again. > > In addition, it handles such exceptions like the hardware is reset > when packets are sent, it will switch to the software computing > and release occupied resources. > > Signed-off-by: Wenkai Lin <linwenkai6@xxxxxxxxxxxxx> > Signed-off-by: Chenghai Huang <huangchenghai2@xxxxxxxxxx> > --- > drivers/crypto/hisilicon/sec2/sec.h | 63 ++- > drivers/crypto/hisilicon/sec2/sec_crypto.c | 574 ++++++++++++++------- > 2 files changed, 457 insertions(+), 180 deletions(-) Patch applied. Thanks. -- Email: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
