Merge branch 'linus' into perf/urgent

[cascardo/linux.git] / net / ipv6 / esp6.c

diff --git a/net/ipv6/esp6.c b/net/ipv6/esp6.c
index e67e63f..b8719df 100644 (file)
--- a/net/ipv6/esp6.c
+++ b/net/ipv6/esp6.c
@@ -164,10 +164,9 @@ static int esp6_output(struct xfrm_state *x, struct sk_buff *skb)
        u8 *iv;
        u8 *tail;
        __be32 *seqhi;
-       struct esp_data *esp = x->data;
 
        /* skb is pure payload to encrypt */
-       aead = esp->aead;
+       aead = x->data;
        alen = crypto_aead_authsize(aead);
 
        tfclen = 0;
@@ -181,8 +180,6 @@ static int esp6_output(struct xfrm_state *x, struct sk_buff *skb)
        }
        blksize = ALIGN(crypto_aead_blocksize(aead), 4);
        clen = ALIGN(skb->len + 2 + tfclen, blksize);
-       if (esp->padlen)
-               clen = ALIGN(clen, esp->padlen);
        plen = clen - skb->len - tfclen;
 
        err = skb_cow_data(skb, tfclen + plen + alen, &trailer);
@@ -271,8 +268,7 @@ error:
 static int esp_input_done2(struct sk_buff *skb, int err)
 {
        struct xfrm_state *x = xfrm_input_state(skb);
-       struct esp_data *esp = x->data;
-       struct crypto_aead *aead = esp->aead;
+       struct crypto_aead *aead = x->data;
        int alen = crypto_aead_authsize(aead);
        int hlen = sizeof(struct ip_esp_hdr) + crypto_aead_ivsize(aead);
        int elen = skb->len - hlen;
@@ -325,8 +321,7 @@ static void esp_input_done(struct crypto_async_request *base, int err)
 static int esp6_input(struct xfrm_state *x, struct sk_buff *skb)
 {
        struct ip_esp_hdr *esph;
-       struct esp_data *esp = x->data;
-       struct crypto_aead *aead = esp->aead;
+       struct crypto_aead *aead = x->data;
        struct aead_request *req;
        struct sk_buff *trailer;
        int elen = skb->len - sizeof(*esph) - crypto_aead_ivsize(aead);
@@ -414,9 +409,8 @@ out:
 
 static u32 esp6_get_mtu(struct xfrm_state *x, int mtu)
 {
-       struct esp_data *esp = x->data;
-       u32 blksize = ALIGN(crypto_aead_blocksize(esp->aead), 4);
-       u32 align = max_t(u32, blksize, esp->padlen);
+       struct crypto_aead *aead = x->data;
+       u32 blksize = ALIGN(crypto_aead_blocksize(aead), 4);
        unsigned int net_adj;
 
        if (x->props.mode != XFRM_MODE_TUNNEL)
@@ -424,8 +418,8 @@ static u32 esp6_get_mtu(struct xfrm_state *x, int mtu)
        else
                net_adj = 0;
 
-       return ((mtu - x->props.header_len - crypto_aead_authsize(esp->aead) -
-                net_adj) & ~(align - 1)) + net_adj - 2;
+       return ((mtu - x->props.header_len - crypto_aead_authsize(aead) -
+                net_adj) & ~(blksize - 1)) + net_adj - 2;
 }
 
 static void esp6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
@@ -454,18 +448,16 @@ static void esp6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
 
 static void esp6_destroy(struct xfrm_state *x)
 {
-       struct esp_data *esp = x->data;
+       struct crypto_aead *aead = x->data;
 
-       if (!esp)
+       if (!aead)
                return;
 
-       crypto_free_aead(esp->aead);
-       kfree(esp);
+       crypto_free_aead(aead);
 }
 
 static int esp_init_aead(struct xfrm_state *x)
 {
-       struct esp_data *esp = x->data;
        struct crypto_aead *aead;
        int err;
 
@@ -474,7 +466,7 @@ static int esp_init_aead(struct xfrm_state *x)
        if (IS_ERR(aead))
                goto error;
 
-       esp->aead = aead;
+       x->data = aead;
 
        err = crypto_aead_setkey(aead, x->aead->alg_key,
                                 (x->aead->alg_key_len + 7) / 8);
@@ -491,7 +483,6 @@ error:
 
 static int esp_init_authenc(struct xfrm_state *x)
 {
-       struct esp_data *esp = x->data;
        struct crypto_aead *aead;
        struct crypto_authenc_key_param *param;
        struct rtattr *rta;
@@ -526,7 +517,7 @@ static int esp_init_authenc(struct xfrm_state *x)
        if (IS_ERR(aead))
                goto error;
 
-       esp->aead = aead;
+       x->data = aead;
 
        keylen = (x->aalg ? (x->aalg->alg_key_len + 7) / 8 : 0) +
                 (x->ealg->alg_key_len + 7) / 8 + RTA_SPACE(sizeof(*param));
@@ -581,7 +572,6 @@ error:
 
 static int esp6_init_state(struct xfrm_state *x)
 {
-       struct esp_data *esp;
        struct crypto_aead *aead;
        u32 align;
        int err;
@@ -589,11 +579,7 @@ static int esp6_init_state(struct xfrm_state *x)
        if (x->encap)
                return -EINVAL;
 
-       esp = kzalloc(sizeof(*esp), GFP_KERNEL);
-       if (esp == NULL)
-               return -ENOMEM;
-
-       x->data = esp;
+       x->data = NULL;
 
        if (x->aead)
                err = esp_init_aead(x);
@@ -603,9 +589,7 @@ static int esp6_init_state(struct xfrm_state *x)
        if (err)
                goto error;
 
-       aead = esp->aead;
-
-       esp->padlen = 0;
+       aead = x->data;
 
        x->props.header_len = sizeof(struct ip_esp_hdr) +
                              crypto_aead_ivsize(aead);
@@ -625,9 +609,7 @@ static int esp6_init_state(struct xfrm_state *x)
        }
 
        align = ALIGN(crypto_aead_blocksize(aead), 4);
-       if (esp->padlen)
-               align = max_t(u32, align, esp->padlen);
-       x->props.trailer_len = align + 1 + crypto_aead_authsize(esp->aead);
+       x->props.trailer_len = align + 1 + crypto_aead_authsize(aead);
 
 error:
        return err;