[PATCH v2 next-queue 04/10] ixgbe: add ipsec data structures

[Shannon Nelson]

Set up the data structures to be used by the ipsec offload.

Signed-off-by: Shannon Nelson <shannon.nel...@oracle.com>
---
v2: ipaddr[] becomes __be32
    increase the hash table size

 drivers/net/ethernet/intel/ixgbe/ixgbe.h       |  5 ++++
 drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.h | 40 ++++++++++++++++++++++++++
 2 files changed, 45 insertions(+)

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe.h 
b/drivers/net/ethernet/intel/ixgbe/ixgbe.h
index 1e11462..9487750 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe.h
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe.h
@@ -622,6 +622,7 @@ struct ixgbe_adapter {
 #define IXGBE_FLAG2_EEE_CAPABLE                        BIT(14)
 #define IXGBE_FLAG2_EEE_ENABLED                        BIT(15)
 #define IXGBE_FLAG2_RX_LEGACY                  BIT(16)
+#define IXGBE_FLAG2_IPSEC_ENABLED              BIT(17)
 
        /* Tx fast path data */
        int num_tx_queues;
@@ -772,6 +773,10 @@ struct ixgbe_adapter {
 
 #define IXGBE_RSS_KEY_SIZE     40  /* size of RSS Hash Key in bytes */
        u32 *rss_key;
+
+#ifdef CONFIG_XFRM
+       struct ixgbe_ipsec *ipsec;
+#endif /* CONFIG_XFRM */
 };
 
 static inline u8 ixgbe_max_rss_indices(struct ixgbe_adapter *adapter)
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.h 
b/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.h
index 341d3f0..ba1c82e 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.h
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.h
@@ -49,4 +49,44 @@ enum ixgbe_ipsec_tbl_sel {
 #define IXGBE_RXMOD_DECRYPT            0x00000008
 #define IXGBE_RXMOD_IPV6               0x00000010
 
+struct rx_sa {
+       struct hlist_node hlist;
+       struct xfrm_state *xs;
+       __be32 ipaddr[4];
+       u32 key[4];
+       u32 salt;
+       u32 mode;
+       u8  iptbl_ind;
+       bool used;
+       bool decrypt;
+};
+
+struct rx_ip_sa {
+       __be32 ipaddr[4];
+       u32 ref_cnt;
+       bool used;
+};
+
+struct tx_sa {
+       struct xfrm_state *xs;
+       u32 key[4];
+       u32 salt;
+       bool encrypt;
+       bool used;
+};
+
+struct ixgbe_ipsec_tx_data {
+       u32 flags;
+       u16 trailer_len;
+       u16 sa_idx;
+};
+
+struct ixgbe_ipsec {
+       u16 num_rx_sa;
+       u16 num_tx_sa;
+       struct rx_ip_sa *ip_tbl;
+       struct rx_sa *rx_tbl;
+       struct tx_sa *tx_tbl;
+       DECLARE_HASHTABLE(rx_sa_list, 10);
+};
 #endif /* _IXGBE_IPSEC_H_ */
-- 
2.7.4