[dpdk-dev] [PATCH v5 13/20] pci: introduce PCI address parsing function

[Gaetan Rivet <gaetan.rivet@6wind.com>]

A new single function that is able to parse all currently supported
format:

   * Domain-Bus-Device-Function
   *        Bus-Device-Function

Signed-off-by: Gaetan Rivet <gaetan.rivet@6wind.com>
---
 lib/librte_pci/include/rte_pci.h   | 15 +++++++++++++++
 lib/librte_pci/rte_pci.c           | 10 ++++++++++
 lib/librte_pci/rte_pci_version.map |  1 +
 3 files changed, 26 insertions(+)

diff --git a/lib/librte_pci/include/rte_pci.h b/lib/librte_pci/include/rte_pci.h
index 38cbdb3..9e79557 100644
--- a/lib/librte_pci/include/rte_pci.h
+++ b/lib/librte_pci/include/rte_pci.h
@@ -256,6 +256,21 @@ int rte_eal_compare_pci_addr(const struct rte_pci_addr *addr,
 int pci_addr_cmp(const struct rte_pci_addr *addr,
 		 const struct rte_pci_addr *addr2);
 
+
+/**
+ * Utility function to parse a string into a PCI location.
+ *
+ * @param str
+ *	The string to parse
+ * @param addr
+ *	The reference to the structure where the location
+ *	is stored.
+ * @return
+ *	0 on success
+ *	<0 otherwise
+ */
+int pci_addr_parse(const char *str, struct rte_pci_addr *addr);
+
 /**
  * Map a particular resource from a file.
  *
diff --git a/lib/librte_pci/rte_pci.c b/lib/librte_pci/rte_pci.c
index fc2fc7f..7ba472c 100644
--- a/lib/librte_pci/rte_pci.c
+++ b/lib/librte_pci/rte_pci.c
@@ -171,6 +171,16 @@ pci_addr_cmp(const struct rte_pci_addr *addr,
 		return 0;
 }
 
+int
+pci_addr_parse(const char *str, struct rte_pci_addr *addr)
+{
+	if (pci_bdf_parse(str, addr) == 0 ||
+	    pci_dbdf_parse(str, addr) == 0)
+		return 0;
+	return -1;
+}
+
+
 /* map a particular resource from a file */
 void *
 pci_map_resource(void *requested_addr, int fd, off_t offset, size_t size,
diff --git a/lib/librte_pci/rte_pci_version.map b/lib/librte_pci/rte_pci_version.map
index 8d180e3..5f50f98 100644
--- a/lib/librte_pci/rte_pci_version.map
+++ b/lib/librte_pci/rte_pci_version.map
@@ -4,6 +4,7 @@ DPDK_17.11 {
 	eal_parse_pci_BDF;
 	eal_parse_pci_DomBDF;
 	pci_addr_cmp;
+	pci_addr_parse;
 	pci_bdf_parse;
 	pci_dbdf_parse;
 	pci_device_name;
-- 
2.1.4