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877b5691f2
The flags field in 'struct shash_desc' never actually does anything. The only ostensibly supported flag is CRYPTO_TFM_REQ_MAY_SLEEP. However, no shash algorithm ever sleeps, making this flag a no-op. With this being the case, inevitably some users who can't sleep wrongly pass MAY_SLEEP. These would all need to be fixed if any shash algorithm actually started sleeping. For example, the shash_ahash_*() functions, which wrap a shash algorithm with the ahash API, pass through MAY_SLEEP from the ahash API to the shash API. However, the shash functions are called under kmap_atomic(), so actually they're assumed to never sleep. Even if it turns out that some users do need preemption points while hashing large buffers, we could easily provide a helper function crypto_shash_update_large() which divides the data into smaller chunks and calls crypto_shash_update() and cond_resched() for each chunk. It's not necessary to have a flag in 'struct shash_desc', nor is it necessary to make individual shash algorithms aware of this at all. Therefore, remove shash_desc::flags, and document that the crypto_shash_*() functions can be called from any context. Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |
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| .. | ||
| certs | ||
| .gitignore | ||
| ap.c | ||
| chan.c | ||
| core.c | ||
| core.h | ||
| debugfs.c | ||
| debugfs.h | ||
| ethtool.c | ||
| ibss.c | ||
| Kconfig | ||
| lib80211.c | ||
| lib80211_crypt_ccmp.c | ||
| lib80211_crypt_tkip.c | ||
| lib80211_crypt_wep.c | ||
| Makefile | ||
| mesh.c | ||
| mlme.c | ||
| nl80211.c | ||
| nl80211.h | ||
| ocb.c | ||
| of.c | ||
| pmsr.c | ||
| radiotap.c | ||
| rdev-ops.h | ||
| reg.c | ||
| reg.h | ||
| scan.c | ||
| sme.c | ||
| sysfs.c | ||
| sysfs.h | ||
| trace.c | ||
| trace.h | ||
| util.c | ||
| wext-compat.c | ||
| wext-compat.h | ||
| wext-core.c | ||
| wext-priv.c | ||
| wext-proc.c | ||
| wext-sme.c | ||
| wext-spy.c | ||