From 99a7b0c14c3078c0eaa1e795fb9bd53330977fa7 Mon Sep 17 00:00:00 2001 From: Shannon Nelson Date: Mon, 13 Aug 2018 11:43:39 -0700 Subject: [PATCH] ixgbe: prep IPsec constants for later use Pull out a couple of values from a function so they can be used later elsewhere. Signed-off-by: Shannon Nelson Tested-by: Andrew Bowers Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c index 4340651..3afb1fe 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.c @@ -5,6 +5,9 @@ #include #include +#define IXGBE_IPSEC_KEY_BITS 160 +static const char aes_gcm_name[] = "rfc4106(gcm(aes))"; + /** * ixgbe_ipsec_set_tx_sa - set the Tx SA registers * @hw: hw specific details @@ -407,7 +410,6 @@ static int ixgbe_ipsec_parse_proto_keys(struct xfrm_state *xs, struct net_device *dev = xs->xso.dev; unsigned char *key_data; char *alg_name = NULL; - const char aes_gcm_name[] = "rfc4106(gcm(aes))"; int key_len; if (!xs->aead) { @@ -435,9 +437,9 @@ static int ixgbe_ipsec_parse_proto_keys(struct xfrm_state *xs, * we don't need to do any byteswapping. * 160 accounts for 16 byte key and 4 byte salt */ - if (key_len == 160) { + if (key_len == IXGBE_IPSEC_KEY_BITS) { *mysalt = ((u32 *)key_data)[4]; - } else if (key_len != 128) { + } else if (key_len != (IXGBE_IPSEC_KEY_BITS - (sizeof(*mysalt) * 8))) { netdev_err(dev, "IPsec hw offload only supports keys up to 128 bits with a 32 bit salt\n"); return -EINVAL; } else { -- 2.7.4