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| author | David S. Miller <davem@davemloft.net> | 2006-09-23 00:17:35 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2006-09-23 00:17:35 +0200 |
| commit | e4bec827feda76d5e7417a2696a75424834d564f (patch) | |
| tree | bd899e0c2fbf7f6dd1d33ce0610d88fc4a8864ee /include/net/esp.h | |
| parent | [XFRM]: Extract common hashing code into xfrm_hash.[ch] (diff) | |
| download | linux-e4bec827feda76d5e7417a2696a75424834d564f.tar.xz linux-e4bec827feda76d5e7417a2696a75424834d564f.zip | |
[IPSEC] esp: Defer output IV initialization to first use.
First of all, if the xfrm_state only gets used for input
packets this entropy is a complete waste.
Secondly, it is often the case that a configuration loads
many rules (perhaps even dynamically) and they don't all
necessarily ever get used.
This get_random_bytes() call was showing up in the profiles
for xfrm_state inserts which is how I noticed this.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/esp.h')
| -rw-r--r-- | include/net/esp.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/include/net/esp.h b/include/net/esp.h index 064366d66eea..713d039f4af7 100644 --- a/include/net/esp.h +++ b/include/net/esp.h @@ -15,13 +15,14 @@ struct esp_data struct { u8 *key; /* Key */ int key_len; /* Key length */ - u8 *ivec; /* ivec buffer */ + int padlen; /* 0..255 */ /* ivlen is offset from enc_data, where encrypted data start. * It is logically different of crypto_tfm_alg_ivsize(tfm). * We assume that it is either zero (no ivec), or * >= crypto_tfm_alg_ivsize(tfm). */ int ivlen; - int padlen; /* 0..255 */ + int ivinitted; + u8 *ivec; /* ivec buffer */ struct crypto_blkcipher *tfm; /* crypto handle */ } conf; |