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| author |   Florian Westphal <fw@strlen.de> | 2019-06-24 22:04:48 +0200 |
|---|---|---|
| committer |   Steffen Klassert <steffen.klassert@secunet.com> | 2019-07-01 06:16:40 +0200 |
| commit | c7b37c769d2a5e711106a3c793140a4f46768e04 (patch) | |
| tree | 49ad85e5a624504acf57dd79b59f28a0913711e5 /net/ipv6/esp6.c | |
| parent | xfrm: remove empty xfrmi_init_net (diff) | |
| download | linux-dev-c7b37c769d2a5e711106a3c793140a4f46768e04.tar.xz linux-dev-c7b37c769d2a5e711106a3c793140a4f46768e04.zip | |
xfrm: remove get_mtu indirection from xfrm_type
esp4_get_mtu and esp6_get_mtu are exactly the same, the only difference
is a single sizeof() (ipv4 vs. ipv6 header).
Merge both into xfrm_state_mtu() and remove the indirection.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Diffstat (limited to 'net/ipv6/esp6.c')
| -rw-r--r-- | net/ipv6/esp6.c | 20 |
1 files changed, 1 insertions, 19 deletions
diff --git a/net/ipv6/esp6.c b/net/ipv6/esp6.c index b6c6b3e08836..a3b403ba8f8f 100644 --- a/net/ipv6/esp6.c +++ b/net/ipv6/esp6.c @@ -41,8 +41,6 @@ struct esp_skb_cb { #define ESP_SKB_CB(__skb) ((struct esp_skb_cb *)&((__skb)->cb[0])) -static u32 esp6_get_mtu(struct xfrm_state *x, int mtu); - /* * Allocate an AEAD request structure with extra space for SG and IV. * @@ -447,7 +445,7 @@ static int esp6_output(struct xfrm_state *x, struct sk_buff *skb) struct xfrm_dst *dst = (struct xfrm_dst *)skb_dst(skb); u32 padto; - padto = min(x->tfcpad, esp6_get_mtu(x, dst->child_mtu_cached)); + padto = min(x->tfcpad, xfrm_state_mtu(x, dst->child_mtu_cached)); if (skb->len < padto) esp.tfclen = padto - skb->len; } @@ -687,21 +685,6 @@ out: return ret; } -static u32 esp6_get_mtu(struct xfrm_state *x, int mtu) -{ - 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) - net_adj = sizeof(struct ipv6hdr); - else - net_adj = 0; - - return ((mtu - x->props.header_len - crypto_aead_authsize(aead) - - net_adj) & ~(blksize - 1)) + net_adj - 2; -} - static int esp6_err(struct sk_buff *skb, struct inet6_skb_parm *opt, u8 type, u8 code, int offset, __be32 info) { @@ -919,7 +902,6 @@ static const struct xfrm_type esp6_type = { .flags = XFRM_TYPE_REPLAY_PROT, .init_state = esp6_init_state, .destructor = esp6_destroy, - .get_mtu = esp6_get_mtu, .input = esp6_input, .output = esp6_output, .hdr_offset = xfrm6_find_1stfragopt, |