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net: esp{4,6}: get rid of struct esp_data
struct esp_data consists of a single pointer, vanishing the need for it to be a structure. Fold the pointer into 'data' direcly, removing one level of pointer indirection. Signed-off-by: Mathias Krause <mathias.krause@secunet.com> Cc: Steffen Klassert <steffen.klassert@secunet.com> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
This commit is contained in:
Mathias Krause
Steffen Klassert
parent
123b0d1ba0
commit
1c5ad13f7c
@ -3,13 +3,6 @@
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#include <linux/skbuff.h>
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struct crypto_aead;
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struct esp_data {
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/* Confidentiality & Integrity */
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struct crypto_aead *aead;
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};
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void *pskb_put(struct sk_buff *skb, struct sk_buff *tail, int len);
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struct ip_esp_hdr;
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@ -121,7 +121,6 @@ static int esp_output(struct xfrm_state *x, struct sk_buff *skb)
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struct aead_givcrypt_request *req;
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struct scatterlist *sg;
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struct scatterlist *asg;
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struct esp_data *esp;
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struct sk_buff *trailer;
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void *tmp;
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u8 *iv;
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@ -139,8 +138,7 @@ static int esp_output(struct xfrm_state *x, struct sk_buff *skb)
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/* skb is pure payload to encrypt */
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esp = x->data;
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aead = esp->aead;
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aead = x->data;
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alen = crypto_aead_authsize(aead);
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tfclen = 0;
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@ -278,8 +276,7 @@ static int esp_input_done2(struct sk_buff *skb, int err)
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{
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const struct iphdr *iph;
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struct xfrm_state *x = xfrm_input_state(skb);
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struct esp_data *esp = x->data;
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struct crypto_aead *aead = esp->aead;
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struct crypto_aead *aead = x->data;
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int alen = crypto_aead_authsize(aead);
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int hlen = sizeof(struct ip_esp_hdr) + crypto_aead_ivsize(aead);
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int elen = skb->len - hlen;
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@ -374,8 +371,7 @@ static void esp_input_done(struct crypto_async_request *base, int err)
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static int esp_input(struct xfrm_state *x, struct sk_buff *skb)
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{
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struct ip_esp_hdr *esph;
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struct esp_data *esp = x->data;
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struct crypto_aead *aead = esp->aead;
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struct crypto_aead *aead = x->data;
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struct aead_request *req;
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struct sk_buff *trailer;
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int elen = skb->len - sizeof(*esph) - crypto_aead_ivsize(aead);
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@ -457,8 +453,8 @@ out:
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static u32 esp4_get_mtu(struct xfrm_state *x, int mtu)
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{
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struct esp_data *esp = x->data;
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u32 blksize = ALIGN(crypto_aead_blocksize(esp->aead), 4);
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struct crypto_aead *aead = x->data;
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u32 blksize = ALIGN(crypto_aead_blocksize(aead), 4);
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unsigned int net_adj;
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switch (x->props.mode) {
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@ -473,7 +469,7 @@ static u32 esp4_get_mtu(struct xfrm_state *x, int mtu)
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BUG();
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}
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return ((mtu - x->props.header_len - crypto_aead_authsize(esp->aead) -
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return ((mtu - x->props.header_len - crypto_aead_authsize(aead) -
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net_adj) & ~(blksize - 1)) + net_adj - 2;
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}
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@ -508,18 +504,16 @@ static void esp4_err(struct sk_buff *skb, u32 info)
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static void esp_destroy(struct xfrm_state *x)
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{
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struct esp_data *esp = x->data;
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struct crypto_aead *aead = x->data;
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if (!esp)
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if (!aead)
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return;
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crypto_free_aead(esp->aead);
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kfree(esp);
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crypto_free_aead(aead);
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}
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static int esp_init_aead(struct xfrm_state *x)
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{
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struct esp_data *esp = x->data;
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struct crypto_aead *aead;
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int err;
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@ -528,7 +522,7 @@ static int esp_init_aead(struct xfrm_state *x)
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if (IS_ERR(aead))
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goto error;
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esp->aead = aead;
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x->data = aead;
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err = crypto_aead_setkey(aead, x->aead->alg_key,
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(x->aead->alg_key_len + 7) / 8);
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@ -545,7 +539,6 @@ error:
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static int esp_init_authenc(struct xfrm_state *x)
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{
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struct esp_data *esp = x->data;
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struct crypto_aead *aead;
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struct crypto_authenc_key_param *param;
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struct rtattr *rta;
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@ -580,7 +573,7 @@ static int esp_init_authenc(struct xfrm_state *x)
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if (IS_ERR(aead))
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goto error;
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esp->aead = aead;
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x->data = aead;
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keylen = (x->aalg ? (x->aalg->alg_key_len + 7) / 8 : 0) +
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(x->ealg->alg_key_len + 7) / 8 + RTA_SPACE(sizeof(*param));
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@ -635,16 +628,11 @@ error:
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static int esp_init_state(struct xfrm_state *x)
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{
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struct esp_data *esp;
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struct crypto_aead *aead;
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u32 align;
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int err;
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esp = kzalloc(sizeof(*esp), GFP_KERNEL);
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if (esp == NULL)
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return -ENOMEM;
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x->data = esp;
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x->data = NULL;
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if (x->aead)
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err = esp_init_aead(x);
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@ -654,7 +642,7 @@ static int esp_init_state(struct xfrm_state *x)
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if (err)
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goto error;
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aead = esp->aead;
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aead = x->data;
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x->props.header_len = sizeof(struct ip_esp_hdr) +
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crypto_aead_ivsize(aead);
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@ -678,7 +666,7 @@ static int esp_init_state(struct xfrm_state *x)
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}
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align = ALIGN(crypto_aead_blocksize(aead), 4);
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x->props.trailer_len = align + 1 + crypto_aead_authsize(esp->aead);
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x->props.trailer_len = align + 1 + crypto_aead_authsize(aead);
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error:
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return err;
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@ -164,10 +164,9 @@ static int esp6_output(struct xfrm_state *x, struct sk_buff *skb)
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u8 *iv;
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u8 *tail;
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__be32 *seqhi;
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struct esp_data *esp = x->data;
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/* skb is pure payload to encrypt */
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aead = esp->aead;
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aead = x->data;
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alen = crypto_aead_authsize(aead);
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tfclen = 0;
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@ -269,8 +268,7 @@ error:
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static int esp_input_done2(struct sk_buff *skb, int err)
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{
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struct xfrm_state *x = xfrm_input_state(skb);
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struct esp_data *esp = x->data;
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struct crypto_aead *aead = esp->aead;
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struct crypto_aead *aead = x->data;
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int alen = crypto_aead_authsize(aead);
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int hlen = sizeof(struct ip_esp_hdr) + crypto_aead_ivsize(aead);
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int elen = skb->len - hlen;
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@ -323,8 +321,7 @@ static void esp_input_done(struct crypto_async_request *base, int err)
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static int esp6_input(struct xfrm_state *x, struct sk_buff *skb)
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{
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struct ip_esp_hdr *esph;
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struct esp_data *esp = x->data;
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struct crypto_aead *aead = esp->aead;
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struct crypto_aead *aead = x->data;
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struct aead_request *req;
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struct sk_buff *trailer;
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int elen = skb->len - sizeof(*esph) - crypto_aead_ivsize(aead);
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@ -412,8 +409,8 @@ out:
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static u32 esp6_get_mtu(struct xfrm_state *x, int mtu)
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{
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struct esp_data *esp = x->data;
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u32 blksize = ALIGN(crypto_aead_blocksize(esp->aead), 4);
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struct crypto_aead *aead = x->data;
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u32 blksize = ALIGN(crypto_aead_blocksize(aead), 4);
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unsigned int net_adj;
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if (x->props.mode != XFRM_MODE_TUNNEL)
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@ -421,7 +418,7 @@ static u32 esp6_get_mtu(struct xfrm_state *x, int mtu)
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else
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net_adj = 0;
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return ((mtu - x->props.header_len - crypto_aead_authsize(esp->aead) -
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return ((mtu - x->props.header_len - crypto_aead_authsize(aead) -
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net_adj) & ~(blksize - 1)) + net_adj - 2;
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}
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@ -452,18 +449,16 @@ static void esp6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
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static void esp6_destroy(struct xfrm_state *x)
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{
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struct esp_data *esp = x->data;
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struct crypto_aead *aead = x->data;
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if (!esp)
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if (!aead)
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return;
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crypto_free_aead(esp->aead);
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kfree(esp);
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crypto_free_aead(aead);
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}
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static int esp_init_aead(struct xfrm_state *x)
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{
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struct esp_data *esp = x->data;
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struct crypto_aead *aead;
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int err;
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@ -472,7 +467,7 @@ static int esp_init_aead(struct xfrm_state *x)
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if (IS_ERR(aead))
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goto error;
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esp->aead = aead;
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x->data = aead;
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err = crypto_aead_setkey(aead, x->aead->alg_key,
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(x->aead->alg_key_len + 7) / 8);
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@ -489,7 +484,6 @@ error:
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static int esp_init_authenc(struct xfrm_state *x)
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{
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struct esp_data *esp = x->data;
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struct crypto_aead *aead;
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struct crypto_authenc_key_param *param;
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struct rtattr *rta;
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@ -524,7 +518,7 @@ static int esp_init_authenc(struct xfrm_state *x)
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if (IS_ERR(aead))
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goto error;
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esp->aead = aead;
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x->data = aead;
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keylen = (x->aalg ? (x->aalg->alg_key_len + 7) / 8 : 0) +
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(x->ealg->alg_key_len + 7) / 8 + RTA_SPACE(sizeof(*param));
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@ -579,7 +573,6 @@ error:
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static int esp6_init_state(struct xfrm_state *x)
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{
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struct esp_data *esp;
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struct crypto_aead *aead;
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u32 align;
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int err;
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@ -587,11 +580,7 @@ static int esp6_init_state(struct xfrm_state *x)
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if (x->encap)
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return -EINVAL;
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esp = kzalloc(sizeof(*esp), GFP_KERNEL);
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if (esp == NULL)
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return -ENOMEM;
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x->data = esp;
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x->data = NULL;
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if (x->aead)
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err = esp_init_aead(x);
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@ -601,7 +590,7 @@ static int esp6_init_state(struct xfrm_state *x)
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if (err)
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goto error;
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aead = esp->aead;
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aead = x->data;
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x->props.header_len = sizeof(struct ip_esp_hdr) +
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crypto_aead_ivsize(aead);
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@ -621,7 +610,7 @@ static int esp6_init_state(struct xfrm_state *x)
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}
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align = ALIGN(crypto_aead_blocksize(aead), 4);
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x->props.trailer_len = align + 1 + crypto_aead_authsize(esp->aead);
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x->props.trailer_len = align + 1 + crypto_aead_authsize(aead);
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error:
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return err;
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