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net: ipv4: stop checking crypto_ahash_alignmask

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Now that the alignmask for ahash and shash algorithms is always 0,
crypto_ahash_alignmask() always returns 0 and will be removed.  In
preparation for this, stop checking crypto_ahash_alignmask() in ah4.c.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Eric Biggers 2023-10-22 01:10:48 -07:00 committed by Herbert Xu
parent 93f367a9a4
commit e77f5dd701
1 changed files with 7 additions and 10 deletions
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17
net/ipv4/ah4.c
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@ -27,9 +27,7 @@ static void *ah_alloc_tmp(struct crypto_ahash *ahash, int nfrags,
{
unsigned int len;
len = size + crypto_ahash_digestsize(ahash) +
(crypto_ahash_alignmask(ahash) &
~(crypto_tfm_ctx_alignment() - 1));
len = size + crypto_ahash_digestsize(ahash);
len = ALIGN(len, crypto_tfm_ctx_alignment());
@ -46,10 +44,9 @@ static inline u8 *ah_tmp_auth(void *tmp, unsigned int offset)
return tmp + offset;
}
static inline u8 *ah_tmp_icv(struct crypto_ahash *ahash, void *tmp,
unsigned int offset)
static inline u8 *ah_tmp_icv(void *tmp, unsigned int offset)
{
return PTR_ALIGN((u8 *)tmp + offset, crypto_ahash_alignmask(ahash) + 1);
return tmp + offset;
}
static inline struct ahash_request *ah_tmp_req(struct crypto_ahash *ahash,
@ -129,7 +126,7 @@ static void ah_output_done(void *data, int err)
int ihl = ip_hdrlen(skb);
iph = AH_SKB_CB(skb)->tmp;
icv = ah_tmp_icv(ahp->ahash, iph, ihl);
icv = ah_tmp_icv(iph, ihl);
memcpy(ah->auth_data, icv, ahp->icv_trunc_len);
top_iph->tos = iph->tos;
@ -182,7 +179,7 @@ static int ah_output(struct xfrm_state *x, struct sk_buff *skb)
if (!iph)
goto out;
seqhi = (__be32 *)((char *)iph + ihl);
icv = ah_tmp_icv(ahash, seqhi, seqhi_len);
icv = ah_tmp_icv(seqhi, seqhi_len);
req = ah_tmp_req(ahash, icv);
sg = ah_req_sg(ahash, req);
seqhisg = sg + nfrags;
@ -279,7 +276,7 @@ static void ah_input_done(void *data, int err)
work_iph = AH_SKB_CB(skb)->tmp;
auth_data = ah_tmp_auth(work_iph, ihl);
icv = ah_tmp_icv(ahp->ahash, auth_data, ahp->icv_trunc_len);
icv = ah_tmp_icv(auth_data, ahp->icv_trunc_len);
err = crypto_memneq(icv, auth_data, ahp->icv_trunc_len) ? -EBADMSG : 0;
if (err)
@ -374,7 +371,7 @@ static int ah_input(struct xfrm_state *x, struct sk_buff *skb)
seqhi = (__be32 *)((char *)work_iph + ihl);
auth_data = ah_tmp_auth(seqhi, seqhi_len);
icv = ah_tmp_icv(ahash, auth_data, ahp->icv_trunc_len);
icv = ah_tmp_icv(auth_data, ahp->icv_trunc_len);
req = ah_tmp_req(ahash, icv);
sg = ah_req_sg(ahash, req);
seqhisg = sg + nfrags;