diff options
| author | Horia Geanta <horia.geanta@freescale.com> | 2012-09-04 16:18:00 (GMT) |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2012-09-06 20:17:07 (GMT) |
| commit | 891104ed008e8646c7860fe5bc70b0aac55dcc6c (patch) | |
| tree | be2fddc35835ad644d8cb098a588358cd793957b /drivers/crypto/caam | |
| parent | c2b3711d11d08a34493dec45769d2e96141f8647 (diff) | |
| download | linux-891104ed008e8646c7860fe5bc70b0aac55dcc6c.tar.xz | |
crypto: caam - add IPsec ESN support
Support for ESNs (extended sequence numbers).
Tested with strongswan by connecting back-to-back P1010RDB with P2020RDB.
Signed-off-by: Horia Geanta <horia.geanta@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto/caam')
| -rw-r--r-- | drivers/crypto/caam/caamalg.c | 27 | ||||
| -rw-r--r-- | drivers/crypto/caam/compat.h | 1 |
2 files changed, 26 insertions, 2 deletions
diff --git a/drivers/crypto/caam/caamalg.c b/drivers/crypto/caam/caamalg.c index cf268b1..b2a0a07 100644 --- a/drivers/crypto/caam/caamalg.c +++ b/drivers/crypto/caam/caamalg.c @@ -1650,7 +1650,11 @@ struct caam_alg_template { }; static struct caam_alg_template driver_algs[] = { - /* single-pass ipsec_esp descriptor */ + /* + * single-pass ipsec_esp descriptor + * authencesn(*,*) is also registered, although not present + * explicitly here. + */ { .name = "authenc(hmac(md5),cbc(aes))", .driver_name = "authenc-hmac-md5-cbc-aes-caam", @@ -2213,7 +2217,9 @@ static int __init caam_algapi_init(void) for (i = 0; i < ARRAY_SIZE(driver_algs); i++) { /* TODO: check if h/w supports alg */ struct caam_crypto_alg *t_alg; + bool done = false; +authencesn: t_alg = caam_alg_alloc(ctrldev, &driver_algs[i]); if (IS_ERR(t_alg)) { err = PTR_ERR(t_alg); @@ -2227,8 +2233,25 @@ static int __init caam_algapi_init(void) dev_warn(ctrldev, "%s alg registration failed\n", t_alg->crypto_alg.cra_driver_name); kfree(t_alg); - } else + } else { list_add_tail(&t_alg->entry, &priv->alg_list); + if (driver_algs[i].type == CRYPTO_ALG_TYPE_AEAD && + !memcmp(driver_algs[i].name, "authenc", 7) && + !done) { + char *name; + + name = driver_algs[i].name; + memmove(name + 10, name + 7, strlen(name) - 7); + memcpy(name + 7, "esn", 3); + + name = driver_algs[i].driver_name; + memmove(name + 10, name + 7, strlen(name) - 7); + memcpy(name + 7, "esn", 3); + + done = true; + goto authencesn; + } + } } if (!list_empty(&priv->alg_list)) dev_info(ctrldev, "%s algorithms registered in /proc/crypto\n", diff --git a/drivers/crypto/caam/compat.h b/drivers/crypto/caam/compat.h index 762aeff..cf15e78 100644 --- a/drivers/crypto/caam/compat.h +++ b/drivers/crypto/caam/compat.h @@ -23,6 +23,7 @@ #include <linux/types.h> #include <linux/debugfs.h> #include <linux/circ_buf.h> +#include <linux/string.h> #include <net/xfrm.h> #include <crypto/algapi.h> |