Add option to link DPDK dynamically

Change-Id: Ie2b47f9020c8260b199d141103318a0261e16832
Signed-off-by: Damjan Marion <damarion@cisco.com>

5 files changed, 117 insertions, 79 deletions

diff --git a/vnet/vnet/devices/dpdk/dpdk.h b/vnet/vnet/devices/dpdk/dpdk.h
index 14f7b3e8..e2bb1e2a 100644
--- a/vnet/vnet/devices/dpdk/dpdk.h
+++ b/vnet/vnet/devices/dpdk/dpdk.h
@@ -575,4 +575,87 @@ format_function_t format_dpdk_rte_mbuf;
 format_function_t format_dpdk_rx_rte_mbuf;
 unformat_function_t unformat_socket_mem;
 
+
+static inline void
+dpdk_pmd_constructor_init()
+{
+  /* Add references to DPDK Driver Constructor functions to get the dynamic
+   * loader to pull in the driver library & run the constructors.
+   */
+#define _(d)                                            \
+  do {                                                  \
+    void devinitfn_ ##d(void);                          \
+    __attribute__((unused)) void (* volatile pf)(void); \
+    pf = devinitfn_ ##d;                                \
+  } while(0);
+
+#ifdef RTE_LIBRTE_EM_PMD
+  _(em_pmd_drv)
+#endif
+
+#ifdef RTE_LIBRTE_IGB_PMD
+  _(pmd_igb_drv)
+#endif
+
+#ifdef RTE_LIBRTE_IXGBE_PMD
+  _(rte_ixgbe_driver)
+#endif
+
+#ifdef RTE_LIBRTE_I40E_PMD
+  _(rte_i40e_driver)
+  _(rte_i40evf_driver)
+#endif
+
+#ifdef RTE_LIBRTE_FM10K_PMD
+  _(rte_fm10k_driver)
+#endif
+
+#ifdef RTE_LIBRTE_VIRTIO_PMD
+  _(rte_virtio_driver)
+#endif
+
+#ifdef RTE_LIBRTE_VMXNET3_PMD
+  _(rte_vmxnet3_driver)
+#endif
+
+#ifdef RTE_LIBRTE_VICE_PMD
+  _(rte_vice_driver)
+#endif
+
+#ifdef RTE_LIBRTE_ENIC_PMD
+  _(rte_enic_driver)
+#endif
+
+#ifdef RTE_LIBRTE_PMD_AF_PACKET
+  _(pmd_af_packet_drv)
+#endif
+
+#ifdef RTE_LIBRTE_CXGBE_PMD
+  _(rte_cxgbe_driver)
+#endif
+
+#ifdef RTE_LIBRTE_PMD_BOND
+  _(bond_drv)
+#endif
+
+#undef _
+
+/*
+ * At the moment, the ThunderX NIC driver doesn't have
+ * an entry point named "devinitfn_rte_xxx_driver"
+ */
+#define _(d)                                          \
+  do {                                                  \
+    void d(void);			                      \
+    __attribute__((unused)) void (* volatile pf)(void); \
+    pf = d;		                              \
+  } while(0);
+
+#ifdef RTE_LIBRTE_THUNDERVNIC_PMD
+  _(rte_nicvf_pmd_init)
+#endif
+#undef _
+
+}
+
 #endif /* __included_dpdk_h__ */
diff --git a/vnet/vnet/devices/dpdk/init.c b/vnet/vnet/devices/dpdk/init.c
index d57f6c1a..e84f0de5 100644
--- a/vnet/vnet/devices/dpdk/init.c
+++ b/vnet/vnet/devices/dpdk/init.c
@@ -1720,83 +1720,6 @@ dpdk_init (vlib_main_t * vm)
   ASSERT(offsetof(dpdk_worker_t, cacheline0) == 0);
   ASSERT(offsetof(frame_queue_trace_t, cacheline0) == 0);
 
-  /* Add references to DPDK Driver Constructor functions to get the dynamic
-   * loader to pull in the driver library & run the constructors.
-   */
-#define _(d)                                          \
-do {                                                  \
-  void devinitfn_ ##d(void);                          \
-  __attribute__((unused)) void (* volatile pf)(void); \
-  pf = devinitfn_ ##d;                                \
-} while(0);
-
-#ifdef RTE_LIBRTE_EM_PMD
-  _(em_pmd_drv)
-#endif
-
-#ifdef RTE_LIBRTE_IGB_PMD
-  _(pmd_igb_drv)
-#endif
-
-#ifdef RTE_LIBRTE_IXGBE_PMD
-  _(rte_ixgbe_driver)
-#endif
-
-#ifdef RTE_LIBRTE_I40E_PMD
-  _(rte_i40e_driver)
-  _(rte_i40evf_driver)
-#endif
-
-#ifdef RTE_LIBRTE_FM10K_PMD
-  _(rte_fm10k_driver)
-#endif
-
-#ifdef RTE_LIBRTE_VIRTIO_PMD
-  _(rte_virtio_driver)
-#endif
-
-#ifdef RTE_LIBRTE_VMXNET3_PMD
-  _(rte_vmxnet3_driver)
-#endif
-
-#ifdef RTE_LIBRTE_VICE_PMD
-  _(rte_vice_driver)
-#endif
-
-#ifdef RTE_LIBRTE_ENIC_PMD
-  _(rte_enic_driver)
-#endif
-
-#ifdef RTE_LIBRTE_PMD_AF_PACKET
-  _(pmd_af_packet_drv)
-#endif
-
-#ifdef RTE_LIBRTE_CXGBE_PMD
-  _(rte_cxgbe_driver)
-#endif
-
-#ifdef RTE_LIBRTE_PMD_BOND
-  _(bond_drv)
-#endif
-
-#undef _
-
-/* 
- * At the moment, the ThunderX NIC driver doesn't have
- * an entry point named "devinitfn_rte_xxx_driver"
- */
-#define _(d)                                          \
-do {                                                  \
-  void d(void);			                      \
-  __attribute__((unused)) void (* volatile pf)(void); \
-  pf = d;		                              \
-} while(0);
-
-#ifdef RTE_LIBRTE_THUNDERVNIC_PMD
-_(rte_nicvf_pmd_init)
-#endif
-#undef _
-
   dm->vlib_main = vm;
   dm->vnet_main = vnet_get_main();
 
diff --git a/vpp/Makefile.am b/vpp/Makefile.am
index b66daec9..bd2d30a9 100644
--- a/vpp/Makefile.am
+++ b/vpp/Makefile.am
@@ -71,8 +71,12 @@ vpp_LDADD += -lsvm -lsvmdb -lrt
 vpp_LDADD += -lvnetplugin
 
 if WITH_DPDK
+if ENABLE_DPDK_SHARED
+vpp_LDADD += -ldpdk
+else
 vpp_LDADD += -l:libdpdk.a
 endif
+endif
 
 vpp_LDADD += -lvppinfra -lm -lpthread -ldl
 
diff --git a/vpp/configure.ac b/vpp/configure.ac
index 9a2d52e8..5b72eea6 100644
--- a/vpp/configure.ac
+++ b/vpp/configure.ac
@@ -11,6 +11,11 @@ AC_ARG_WITH(dpdk,
             [with_dpdk=1],
             [with_dpdk=0])
 
+AC_ARG_ENABLE(dpdk-shared,
+              AC_HELP_STRING([--enable-dpdk-shared],[Link with DPDK shared lib]),
+              [enable_dpdk_shared=1],
+              [enable_dpdk_shared=0])
+
 AC_ARG_WITH(ipsec,
             AC_HELP_STRING([--without-ipsec],[Disable ipsec]),
             [with_ipsec=0],
@@ -27,7 +32,22 @@ AC_ARG_WITH(ipv6sr,
             [with_ipv6sr=1])
 
 AM_CONDITIONAL(WITH_DPDK, test "$with_dpdk" = "1")
-AC_SUBST(DPDK,[-DDPDK=${with_dpdk}])
+AM_CONDITIONAL(ENABLE_DPDK_SHARED, test "$enable_dpdk_shared" = "1")
+AC_SUBST(DPDK,["-DDPDK=${with_dpdk} -DDPDK_SHARED_LIB=${enable_dpdk_shared}"])
+
+AM_COND_IF(
+	[ENABLE_DPDK_SHARED],
+	[
+		AC_CHECK_HEADERS(
+			[rte_config.h],
+			[], [AC_MSG_ERROR([DPDK header files not found])],
+		)
+		AC_CHECK_LIB(
+			[dpdk], [rte_eal_init],
+			[], [AC_MSG_ERROR([DPDK shared library not found])],
+		)
+	],
+)
 
 AM_CONDITIONAL(WITH_IPSEC, test "$with_ipsec" = "1")
 AC_SUBST(IPSEC,[-DIPSEC=${with_ipsec}])
diff --git a/vpp/vnet/main.c b/vpp/vnet/main.c
index 03139c00..4659440f 100644
--- a/vpp/vnet/main.c
+++ b/vpp/vnet/main.c
@@ -19,6 +19,10 @@
 
 #include <api/vpe_msg_enum.h>
 
+#if DPDK
+#include <vnet/devices/dpdk/dpdk.h>
+#endif
+
 /** \mainpage Virtual Packet Edge Documentation
  * \section intro_sec Introduction
  * 
@@ -197,7 +201,11 @@ defaulted:
     if (clib_mem_init (0, main_heap_size)) {
         vm->init_functions_called = hash_create (0, /* value bytes */ 0);
         vpe_main_init(vm);
-#if ! DPDK
+#if DPDK
+#if !DPDK_SHARED_LIB
+	dpdk_pmd_constructor_init();
+#endif
+#else
         unix_physmem_init(vm, 0 /* fail_if_physical_memory_not_present */);
 #endif
         vlib_set_get_handoff_structure_cb (&vnet_get_handoff_structure);