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| author | Steffen Klassert <steffen.klassert@secunet.com> | 2017-04-14 10:07:19 +0200 |
|---|---|---|
| committer | Steffen Klassert <steffen.klassert@secunet.com> | 2017-04-14 10:07:19 +0200 |
| commit | b3859c8ebffe26ddf7aec0b23a83389d6f2419f9 (patch) | |
| tree | 6119011235e2b2de172cfd3618121ea266c6b136 /net/ipv6/esp6.c | |
| parent | xfrm: Add xfrm_replay_overflow functions for offloading (diff) | |
| download | linux-b3859c8ebffe26ddf7aec0b23a83389d6f2419f9.tar.xz linux-b3859c8ebffe26ddf7aec0b23a83389d6f2419f9.zip | |
esp: Use a synchronous crypto algorithm on offloading.
We need a fallback algorithm for crypto offloading to a NIC.
This is because packets can be rerouted to other NICs that
don't support crypto offloading. The fallback is going to be
implemented at layer2 where we know the final output device
but can't handle asynchronous returns fron the crypto layer.
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Diffstat (limited to 'net/ipv6/esp6.c')
| -rw-r--r-- | net/ipv6/esp6.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/net/ipv6/esp6.c b/net/ipv6/esp6.c index 82d3da81293e..8b55abf1c45b 100644 --- a/net/ipv6/esp6.c +++ b/net/ipv6/esp6.c @@ -704,13 +704,17 @@ static int esp_init_aead(struct xfrm_state *x) char aead_name[CRYPTO_MAX_ALG_NAME]; struct crypto_aead *aead; int err; + u32 mask = 0; err = -ENAMETOOLONG; if (snprintf(aead_name, CRYPTO_MAX_ALG_NAME, "%s(%s)", x->geniv, x->aead->alg_name) >= CRYPTO_MAX_ALG_NAME) goto error; - aead = crypto_alloc_aead(aead_name, 0, 0); + if (x->xso.offload_handle) + mask |= CRYPTO_ALG_ASYNC; + + aead = crypto_alloc_aead(aead_name, 0, mask); err = PTR_ERR(aead); if (IS_ERR(aead)) goto error; @@ -740,6 +744,7 @@ static int esp_init_authenc(struct xfrm_state *x) char authenc_name[CRYPTO_MAX_ALG_NAME]; unsigned int keylen; int err; + u32 mask = 0; err = -EINVAL; if (!x->ealg) @@ -765,7 +770,10 @@ static int esp_init_authenc(struct xfrm_state *x) goto error; } - aead = crypto_alloc_aead(authenc_name, 0, 0); + if (x->xso.offload_handle) + mask |= CRYPTO_ALG_ASYNC; + + aead = crypto_alloc_aead(authenc_name, 0, mask); err = PTR_ERR(aead); if (IS_ERR(aead)) goto error; |