ixgbe/ixgbevf: fix XFRM_ALGO dependency

Based on the original work from Arnd Bergmann.

When XFRM_ALGO is not enabled, the new ixgbe IPsec code produces a
link error:

drivers/net/ethernet/intel/ixgbe/ixgbe_ipsec.o: In function `ixgbe_ipsec_vf_add_sa':
ixgbe_ipsec.c:(.text+0x1266): undefined reference to `xfrm_aead_get_byname'

Simply selecting XFRM_ALGO from here causes circular dependencies, so
to fix it, we probably want this slightly more complex solution that is
similar to what other drivers with XFRM offload do:

A separate Kconfig symbol now controls whether we include the IPsec
offload code. To keep the old behavior, this is left as 'default y'. The
dependency in XFRM_OFFLOAD still causes a circular dependency but is
not actually needed because this symbol is not user visible, so removing
that dependency on top makes it all work.

CC: Arnd Bergmann <arnd@arndb.de>
CC: Shannon Nelson <shannon.nelson@oracle.com>
Fixes: eda0333ac293 ("ixgbe: add VF IPsec management")
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>

diff --git a/drivers/net/ethernet/intel/Kconfig b/drivers/net/ethernet/intel/Kconfig
index fd3373d82a9e94c7850631b88c6b4c7c8940f1a1..59e1bc0f609ee3399130eec23e330111b2dc64e6 100644 (file)
--- a/drivers/net/ethernet/intel/Kconfig
+++ b/drivers/net/ethernet/intel/Kconfig
@@ -200,6 +200,15 @@ config IXGBE_DCB
 
          If unsure, say N.
 
+config IXGBE_IPSEC
+       bool "IPSec XFRM cryptography-offload acceleration"
+       depends on IXGBE
+       depends on XFRM_OFFLOAD
+       default y
+       select XFRM_ALGO
+       ---help---
+         Enable support for IPSec offload in ixgbe.ko
+
 config IXGBEVF
        tristate "Intel(R) 10GbE PCI Express Virtual Function Ethernet support"
        depends on PCI_MSI
@@ -217,6 +226,15 @@ config IXGBEVF
          will be called ixgbevf.  MSI-X interrupt support is required
          for this driver to work correctly.
 
+config IXGBEVF_IPSEC
+       bool "IPSec XFRM cryptography-offload acceleration"
+       depends on IXGBEVF
+       depends on XFRM_OFFLOAD
+       default y
+       select XFRM_ALGO
+       ---help---
+         Enable support for IPSec offload in ixgbevf.ko
+
 config I40E
        tristate "Intel(R) Ethernet Controller XL710 Family support"
        imply PTP_1588_CLOCK

diff --git a/drivers/net/ethernet/intel/ixgbe/Makefile b/drivers/net/ethernet/intel/ixgbe/Makefile
index ca6b0c458e4a50eca96aea8ace64806cbf66aa45..4fb0d9e3f2da21db5acf17dbf5b9c091502db442 100644 (file)
--- a/drivers/net/ethernet/intel/ixgbe/Makefile
+++ b/drivers/net/ethernet/intel/ixgbe/Makefile
@@ -17,4 +17,4 @@ ixgbe-$(CONFIG_IXGBE_DCB) +=  ixgbe_dcb.o ixgbe_dcb_82598.o \
 ixgbe-$(CONFIG_IXGBE_HWMON) += ixgbe_sysfs.o
 ixgbe-$(CONFIG_DEBUG_FS) += ixgbe_debugfs.o
 ixgbe-$(CONFIG_FCOE:m=y) += ixgbe_fcoe.o
-ixgbe-$(CONFIG_XFRM_OFFLOAD) += ixgbe_ipsec.o
+ixgbe-$(CONFIG_IXGBE_IPSEC) += ixgbe_ipsec.o

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe.h b/drivers/net/ethernet/intel/ixgbe/ixgbe.h
index ec1b87cc44100904bf7b486692bc1d06b256fc80..143bdd5ee2a088a738a5fb381e33c141d774e633 100644 (file)
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe.h
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe.h
@@ -769,9 +769,9 @@ struct ixgbe_adapter {
 #define IXGBE_RSS_KEY_SIZE     40  /* size of RSS Hash Key in bytes */
        u32 *rss_key;
 
-#ifdef CONFIG_XFRM_OFFLOAD
+#ifdef CONFIG_IXGBE_IPSEC
        struct ixgbe_ipsec *ipsec;
-#endif /* CONFIG_XFRM_OFFLOAD */
+#endif /* CONFIG_IXGBE_IPSEC */
 
        /* AF_XDP zero-copy */
        struct xdp_umem **xsk_umems;
@@ -1008,7 +1008,7 @@ void ixgbe_store_key(struct ixgbe_adapter *adapter);
 void ixgbe_store_reta(struct ixgbe_adapter *adapter);
 s32 ixgbe_negotiate_fc(struct ixgbe_hw *hw, u32 adv_reg, u32 lp_reg,
                       u32 adv_sym, u32 adv_asm, u32 lp_sym, u32 lp_asm);
-#ifdef CONFIG_XFRM_OFFLOAD
+#ifdef CONFIG_IXGBE_IPSEC
 void ixgbe_init_ipsec_offload(struct ixgbe_adapter *adapter);
 void ixgbe_stop_ipsec_offload(struct ixgbe_adapter *adapter);
 void ixgbe_ipsec_restore(struct ixgbe_adapter *adapter);
@@ -1036,5 +1036,5 @@ static inline int ixgbe_ipsec_vf_add_sa(struct ixgbe_adapter *adapter,
                                        u32 *mbuf, u32 vf) { return -EACCES; }
 static inline int ixgbe_ipsec_vf_del_sa(struct ixgbe_adapter *adapter,
                                        u32 *mbuf, u32 vf) { return -EACCES; }
-#endif /* CONFIG_XFRM_OFFLOAD */
+#endif /* CONFIG_IXGBE_IPSEC */
 #endif /* _IXGBE_H_ */

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
index 0049a2becd7e7349db1cc6d7acf653489882277c..113b38e0defbf547920a5f2fadb63428e50e6dc1 100644 (file)
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
@@ -8694,7 +8694,7 @@ netdev_tx_t ixgbe_xmit_frame_ring(struct sk_buff *skb,
 
 #endif /* IXGBE_FCOE */
 
-#ifdef CONFIG_XFRM_OFFLOAD
+#ifdef CONFIG_IXGBE_IPSEC
        if (skb->sp && !ixgbe_ipsec_tx(tx_ring, first, &ipsec_tx))
                goto out_drop;
 #endif
@@ -10190,7 +10190,7 @@ ixgbe_features_check(struct sk_buff *skb, struct net_device *dev,
         * the TSO, so it's the exception.
         */
        if (skb->encapsulation && !(features & NETIF_F_TSO_MANGLEID)) {
-#ifdef CONFIG_XFRM_OFFLOAD
+#ifdef CONFIG_IXGBE_IPSEC
                if (!skb->sp)
 #endif
                        features &= ~NETIF_F_TSO;
@@ -10883,7 +10883,7 @@ skip_sriov:
        if (hw->mac.type >= ixgbe_mac_82599EB)
                netdev->features |= NETIF_F_SCTP_CRC;
 
-#ifdef CONFIG_XFRM_OFFLOAD
+#ifdef CONFIG_IXGBE_IPSEC
 #define IXGBE_ESP_FEATURES     (NETIF_F_HW_ESP | \
                                 NETIF_F_HW_ESP_TX_CSUM | \
                                 NETIF_F_GSO_ESP)

diff --git a/drivers/net/ethernet/intel/ixgbevf/Makefile b/drivers/net/ethernet/intel/ixgbevf/Makefile
index 297d0f0858b59eba441397d0f6924558e7836768..186a4bb24fdea58a483f161858333313c34373ae 100644 (file)
--- a/drivers/net/ethernet/intel/ixgbevf/Makefile
+++ b/drivers/net/ethernet/intel/ixgbevf/Makefile
@@ -10,5 +10,5 @@ ixgbevf-objs := vf.o \
                 mbx.o \
                 ethtool.o \
                 ixgbevf_main.o
-ixgbevf-$(CONFIG_XFRM_OFFLOAD) += ipsec.o
+ixgbevf-$(CONFIG_IXGBEVF_IPSEC) += ipsec.o
 

diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf.h b/drivers/net/ethernet/intel/ixgbevf/ixgbevf.h
index e399e1c0c54ab178648632cbe187e50d7bd5f0f3..ecab686574b65d23dd7840d840b26c2c002338f9 100644 (file)
--- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf.h
+++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf.h
@@ -459,7 +459,7 @@ int ethtool_ioctl(struct ifreq *ifr);
 
 extern void ixgbevf_write_eitr(struct ixgbevf_q_vector *q_vector);
 
-#ifdef CONFIG_XFRM_OFFLOAD
+#ifdef CONFIG_IXGBEVF_IPSEC
 void ixgbevf_init_ipsec_offload(struct ixgbevf_adapter *adapter);
 void ixgbevf_stop_ipsec_offload(struct ixgbevf_adapter *adapter);
 void ixgbevf_ipsec_restore(struct ixgbevf_adapter *adapter);
@@ -482,7 +482,7 @@ static inline int ixgbevf_ipsec_tx(struct ixgbevf_ring *tx_ring,
                                   struct ixgbevf_tx_buffer *first,
                                   struct ixgbevf_ipsec_tx_data *itd)
 { return 0; }
-#endif /* CONFIG_XFRM_OFFLOAD */
+#endif /* CONFIG_IXGBEVF_IPSEC */
 
 void ixgbe_napi_add_all(struct ixgbevf_adapter *adapter);
 void ixgbe_napi_del_all(struct ixgbevf_adapter *adapter);

diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
index 98707ee11d72667a3ba83212ea301eeb27ba09d7..5e47ede7e832001a17575616fc0ab337d4d2f7fe 100644 (file)
--- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
+++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
@@ -4150,7 +4150,7 @@ static int ixgbevf_xmit_frame_ring(struct sk_buff *skb,
        first->tx_flags = tx_flags;
        first->protocol = vlan_get_protocol(skb);
 
-#ifdef CONFIG_XFRM_OFFLOAD
+#ifdef CONFIG_IXGBEVF_IPSEC
        if (skb->sp && !ixgbevf_ipsec_tx(tx_ring, first, &ipsec_tx))
                goto out_drop;
 #endif

diff --git a/net/xfrm/Kconfig b/net/xfrm/Kconfig
index 4a9ee2d83158ba87a4da985af1020faae8c440b7..140270a13d54f7c69584fa6aefbf6b1be0941ec6 100644 (file)
--- a/net/xfrm/Kconfig
+++ b/net/xfrm/Kconfig
@@ -8,7 +8,6 @@ config XFRM
 
 config XFRM_OFFLOAD
        bool
-       depends on XFRM
 
 config XFRM_ALGO
        tristate