[dpdk-dev] [PATCH] enic: corrected the usage of VFIO_PRESENT

[Sujith Sankar <ssujith@cisco.com>]

This patch corrects the usage of the flag VFIO_PRESENT in enic driver.  
This has uncovered a few warnings, and this patch corrects those too.

Signed-off-by: Sujith Sankar <ssujith@cisco.com>
---
 lib/librte_pmd_enic/Makefile    |  1 +
 lib/librte_pmd_enic/enic.h      |  1 +
 lib/librte_pmd_enic/enic_main.c | 12 ++++++++----
 3 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/lib/librte_pmd_enic/Makefile b/lib/librte_pmd_enic/Makefile
index a2a623f..3271960 100644
--- a/lib/librte_pmd_enic/Makefile
+++ b/lib/librte_pmd_enic/Makefile
@@ -39,6 +39,7 @@ LIB = librte_pmd_enic.a
 
 CFLAGS += -I$(RTE_SDK)/lib/librte_pmd_enic/vnic/
 CFLAGS += -I$(RTE_SDK)/lib/librte_pmd_enic/
+CFLAGS += -I$(RTE_SDK)/lib/librte_eal/linuxapp/eal/
 CFLAGS += -O3
 CFLAGS += $(WERROR_FLAGS) -Wno-strict-aliasing
 
diff --git a/lib/librte_pmd_enic/enic.h b/lib/librte_pmd_enic/enic.h
index c43417c..c692bab 100644
--- a/lib/librte_pmd_enic/enic.h
+++ b/lib/librte_pmd_enic/enic.h
@@ -182,6 +182,7 @@ extern void enic_dev_stats_get(struct enic *enic,
 	struct rte_eth_stats *r_stats);
 extern void enic_dev_stats_clear(struct enic *enic);
 extern void enic_add_packet_filter(struct enic *enic);
+extern void *enic_err_intr_handler(void *arg);
 extern void enic_set_mac_address(struct enic *enic, uint8_t *mac_addr);
 extern void enic_del_mac_address(struct enic *enic);
 extern unsigned int enic_cleanup_wq(struct enic *enic, struct vnic_wq *wq);
diff --git a/lib/librte_pmd_enic/enic_main.c b/lib/librte_pmd_enic/enic_main.c
index e4f43c5..469cb6c 100644
--- a/lib/librte_pmd_enic/enic_main.c
+++ b/lib/librte_pmd_enic/enic_main.c
@@ -39,6 +39,7 @@
 #include <sys/mman.h>
 #include <fcntl.h>
 #include <libgen.h>
+#include <sys/ioctl.h>
 
 #include <rte_pci.h>
 #include <rte_memzone.h>
@@ -46,6 +47,7 @@
 #include <rte_mbuf.h>
 #include <rte_string_fns.h>
 #include <rte_ethdev.h>
+#include <eal_vfio.h>
 
 #include "enic_compat.h"
 #include "enic.h"
@@ -561,6 +563,7 @@ enic_free_consistent(__rte_unused struct rte_pci_device *hwdev,
 	/* Nothing to be done */
 }
 
+#ifndef VFIO_PRESENT
 static void
 enic_intr_handler(__rte_unused struct rte_intr_handle *handle,
 	void *arg)
@@ -572,6 +575,7 @@ enic_intr_handler(__rte_unused struct rte_intr_handle *handle,
 
 	enic_log_q_error(enic);
 }
+#endif
 
 int enic_enable(struct enic *enic)
 {
@@ -978,12 +982,13 @@ static void enic_eventfd_init(struct enic *enic)
 void *enic_err_intr_handler(void *arg)
 {
 	struct enic *enic = (struct enic *)arg;
-	unsigned int intr = enic_msix_err_intr(enic);
-	ssize_t size;
 	uint64_t data;
 
 	while (1) {
-		size = read(enic->eventfd, &data, sizeof(data));
+		if (-1 == read(enic->eventfd, &data, sizeof(data))) {
+			dev_err(enic, "eventfd read failed with error %d\n", errno);
+			continue;
+		}
 		dev_err(enic, "Err intr.\n");
 		vnic_intr_return_all_credits(&enic->intr);
 
@@ -1035,7 +1040,6 @@ static int enic_set_intr_mode(struct enic *enic)
 	int *fds;
 	int size;
 	int ret = -1;
-	int index;
 
 	if (enic->intr_count < 1) {
 		dev_err(enic, "Unsupported resource conf.\n");
-- 
1.9.1