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| author | Mathias Krause <mathias.krause@secunet.com> | 2013-10-18 12:09:04 +0200 |
|---|---|---|
| committer | Steffen Klassert <steffen.klassert@secunet.com> | 2013-10-29 06:39:42 +0100 |
| commit | 123b0d1ba0a98ef12550d82b79ccb8d89090f871 (patch) | |
| tree | 0736319cd06a3bb314a297376bef78cd3ae67265 | |
| parent | xfrm: Don't queue retransmitted packets if the original is still on the host (diff) | |
| download | linux-123b0d1ba0a98ef12550d82b79ccb8d89090f871.tar.xz linux-123b0d1ba0a98ef12550d82b79ccb8d89090f871.zip | |
net: esp{4,6}: remove padlen from struct esp_data
The padlen member of struct esp_data is always zero. Get rid of it.
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>
| -rw-r--r-- | include/net/esp.h | 3 | ||||
| -rw-r--r-- | net/ipv4/esp4.c | 9 | ||||
| -rw-r--r-- | net/ipv6/esp6.c | 9 |
3 files changed, 2 insertions, 19 deletions
diff --git a/include/net/esp.h b/include/net/esp.h index 1356dda00d22..706b740d7057 100644 --- a/include/net/esp.h +++ b/include/net/esp.h @@ -6,9 +6,6 @@ struct crypto_aead; struct esp_data { - /* 0..255 */ - int padlen; - /* Confidentiality & Integrity */ struct crypto_aead *aead; }; diff --git a/net/ipv4/esp4.c b/net/ipv4/esp4.c index 109ee89f123e..8b5386a6cb88 100644 --- a/net/ipv4/esp4.c +++ b/net/ipv4/esp4.c @@ -154,8 +154,6 @@ static int esp_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); @@ -461,7 +459,6 @@ static u32 esp4_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); unsigned int net_adj; switch (x->props.mode) { @@ -477,7 +474,7 @@ static u32 esp4_get_mtu(struct xfrm_state *x, int mtu) } return ((mtu - x->props.header_len - crypto_aead_authsize(esp->aead) - - net_adj) & ~(align - 1)) + net_adj - 2; + net_adj) & ~(blksize - 1)) + net_adj - 2; } static void esp4_err(struct sk_buff *skb, u32 info) @@ -659,8 +656,6 @@ static int esp_init_state(struct xfrm_state *x) aead = esp->aead; - esp->padlen = 0; - x->props.header_len = sizeof(struct ip_esp_hdr) + crypto_aead_ivsize(aead); if (x->props.mode == XFRM_MODE_TUNNEL) @@ -683,8 +678,6 @@ static int esp_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); error: diff --git a/net/ipv6/esp6.c b/net/ipv6/esp6.c index d3618a78fcac..0073cd096984 100644 --- a/net/ipv6/esp6.c +++ b/net/ipv6/esp6.c @@ -181,8 +181,6 @@ 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); @@ -416,7 +414,6 @@ 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); unsigned int net_adj; if (x->props.mode != XFRM_MODE_TUNNEL) @@ -425,7 +422,7 @@ static u32 esp6_get_mtu(struct xfrm_state *x, int mtu) net_adj = 0; return ((mtu - x->props.header_len - crypto_aead_authsize(esp->aead) - - net_adj) & ~(align - 1)) + net_adj - 2; + net_adj) & ~(blksize - 1)) + net_adj - 2; } static void esp6_err(struct sk_buff *skb, struct inet6_skb_parm *opt, @@ -606,8 +603,6 @@ static int esp6_init_state(struct xfrm_state *x) aead = esp->aead; - esp->padlen = 0; - x->props.header_len = sizeof(struct ip_esp_hdr) + crypto_aead_ivsize(aead); switch (x->props.mode) { @@ -626,8 +621,6 @@ 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); error: |