From 123b0d1ba0a98ef12550d82b79ccb8d89090f871 Mon Sep 17 00:00:00 2001 From: Mathias Krause Date: Fri, 18 Oct 2013 12:09:04 +0200 Subject: 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 Cc: Steffen Klassert Cc: Herbert Xu Cc: "David S. Miller" Signed-off-by: Steffen Klassert --- net/ipv4/esp4.c | 9 +-------- 1 file changed, 1 insertion(+), 8 deletions(-) (limited to 'net/ipv4/esp4.c') 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: -- cgit v1.2.3