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Tue, 27 Oct 2026 20:05:13 -0700 (PDT) Received: from penguin.lxd ([12.187.136.98]) by smtp.gmail.com with ESMTPSA id a92af1059eb24-1a75a37093esm1150734c88.3.2026.10.27.20.05.12 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 27 Oct 2026 20:05:12 -0700 (PDT) From: "Kanchana P. Sridhar" To: hannes@cmpxchg.org, yosry@kernel.org, nphamcs@gmail.com, chengming.zhou@linux.dev, akpm@linux-foundation.org, linux-mm@kvack.org, herbert@gondor.apana.org.au, davem@davemloft.net, linux-crypto@vger.kernel.org, kanchanapsridhar2026@gmail.com, linux-kernel@vger.kernel.org Cc: rientjes@google.com, willy@infradead.org, senozhatsky@chromium.org Subject: [PATCH v2 2/8] crypto: acomp - Add bit to indicate segmentation support. Date: Tue, 27 Oct 2026 20:04:57 -0700 Message-Id: <20261028030503.17923-3-kanchanapsridhar2026@gmail.com> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20261028030503.17923-1-kanchanapsridhar2026@gmail.com> References: <20261028030503.17923-1-kanchanapsridhar2026@gmail.com> X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit This patch adds segmentation support for compression. Add a bit to the crypto_alg flags to indicate support for segmentation. Also add a helper for acomp to test whether a given tfm supports segmentation. Co-developed-by: Herbert Xu Signed-off-by: Herbert Xu Signed-off-by: Kanchana P Sridhar Signed-off-by: Kanchana P. Sridhar --- include/crypto/algapi.h | 5 +++++ include/crypto/internal/acompress.h | 5 +++++ include/linux/crypto.h | 3 +++ 3 files changed, 13 insertions(+) diff --git a/include/crypto/algapi.h b/include/crypto/algapi.h index 05deea9dac5e..7d406cfe5751 100644 --- a/include/crypto/algapi.h +++ b/include/crypto/algapi.h @@ -280,6 +280,11 @@ static inline bool crypto_tfm_req_virt(struct crypto_tfm *tfm) return tfm->__crt_alg->cra_flags & CRYPTO_ALG_REQ_VIRT; } +static inline bool crypto_tfm_req_seg(struct crypto_tfm *tfm) +{ + return tfm->__crt_alg->cra_flags & CRYPTO_ALG_REQ_SEG; +} + static inline u32 crypto_request_flags(struct crypto_async_request *req) { return req->flags & ~CRYPTO_TFM_REQ_ON_STACK; diff --git a/include/crypto/internal/acompress.h b/include/crypto/internal/acompress.h index 9cd37df32dc4..93ae59623f13 100644 --- a/include/crypto/internal/acompress.h +++ b/include/crypto/internal/acompress.h @@ -189,6 +189,11 @@ static inline bool crypto_acomp_req_virt(struct crypto_acomp *tfm) return crypto_tfm_req_virt(&tfm->base); } +static inline bool crypto_acomp_req_seg(struct crypto_acomp *tfm) +{ + return crypto_tfm_req_seg(&tfm->base); +} + void crypto_acomp_free_streams(struct crypto_acomp_streams *s); int crypto_acomp_alloc_streams(struct crypto_acomp_streams *s); diff --git a/include/linux/crypto.h b/include/linux/crypto.h index b7c97f1c47c9..78c699ac3f82 100644 --- a/include/linux/crypto.h +++ b/include/linux/crypto.h @@ -139,6 +139,9 @@ /* Set if the algorithm cannot have a fallback (e.g., phmac). */ #define CRYPTO_ALG_NO_FALLBACK 0x00080000 +/* Set if the algorithm supports segmentation. */ +#define CRYPTO_ALG_REQ_SEG 0x00100000 + /* The high bits 0xff000000 are reserved for type-specific flags. */ /* -- 2.39.5