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ipsec: Remove unneeded extra variable in esp4 esp_ssg_unref()

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It's assigned twice, but only used to calculate the size of the
structure it points to.  Just remove it and take a sizeof the
actual structure.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
Cc: Steffen Klassert <steffen.klassert@secunet.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: netdev@vger.kernel.org
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
This commit is contained in:
Corey Minyard 2021-07-16 15:28:46 -05:00 committed by Steffen Klassert
parent c18e9405d4
commit f8fdadef92
1 changed files with 1 additions and 3 deletions
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4
net/ipv4/esp4.c
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@ -97,7 +97,6 @@ static inline struct scatterlist *esp_req_sg(struct crypto_aead *aead,
static void esp_ssg_unref(struct xfrm_state *x, void *tmp)
{
struct esp_output_extra *extra = esp_tmp_extra(tmp);
struct crypto_aead *aead = x->data;
int extralen = 0;
u8 *iv;
@ -105,9 +104,8 @@ static void esp_ssg_unref(struct xfrm_state *x, void *tmp)
struct scatterlist *sg;
if (x->props.flags & XFRM_STATE_ESN)
extralen += sizeof(*extra);
extralen += sizeof(struct esp_output_extra);
extra = esp_tmp_extra(tmp);
iv = esp_tmp_iv(aead, tmp, extralen);
req = esp_tmp_req(aead, iv);