[PATCH v8 1/1] app/testpmd: canonicalize short PCI name format

[Shani Peretz <shperetz@nvidia.com>]

when providing short format PCI device names in devargs
(e.g. "08:00:0") it is converted and stored as long format.
however when attach_port is called from testpmd, the user might
provide a short format, which will be passed to find_device with
a comparison function that simply compare stings, which will
cause find_device not to find any device.

This fix canonicalize the user provided string before it is being
passed to find_device.

Signed-off-by: Shani Peretz <shperetz@nvidia.com>
---
 app/test-pmd/testpmd.c | 31 ++++++++++++++++++++++++++++++-
 1 file changed, 30 insertions(+), 1 deletion(-)

diff --git a/app/test-pmd/testpmd.c b/app/test-pmd/testpmd.c
index bb88555328..f8d67f2c64 100644
--- a/app/test-pmd/testpmd.c
+++ b/app/test-pmd/testpmd.c
@@ -47,6 +47,7 @@
 #include <rte_ethdev.h>
 #include <rte_dev.h>
 #include <rte_string_fns.h>
+#include <rte_pci.h>
 #ifdef RTE_NET_IXGBE
 #include <rte_pmd_ixgbe.h>
 #endif
@@ -3407,12 +3408,35 @@ reset_port(portid_t pid)
 	printf("Done\n");
 }
 
+static char *
+convert_pci_address_format(const char *identifier, char *pci_buffer, size_t buf_size)
+{
+	struct rte_devargs da;
+	struct rte_pci_addr pci_addr;
+
+	if (rte_devargs_parse(&da, identifier) != 0)
+		return NULL;
+
+	if (da.bus == NULL)
+		return NULL;
+
+	if (strcmp(rte_bus_name(da.bus), "pci") != 0)
+		return NULL;
+
+	if (rte_pci_addr_parse(da.name, &pci_addr) != 0)
+		return NULL;
+
+	rte_pci_device_name(&pci_addr, pci_buffer, buf_size);
+	return pci_buffer;
+}
+
 void
 attach_port(char *identifier)
 {
 	portid_t pi;
 	struct rte_dev_iterator iterator;
-
+	char *long_identifier;
+	char long_format[PCI_PRI_STR_SIZE];
 	printf("Attaching a new port...\n");
 
 	if (identifier == NULL) {
@@ -3420,6 +3444,11 @@ attach_port(char *identifier)
 		return;
 	}
 
+	/* For PCI device convert to canonical format */
+	long_identifier = convert_pci_address_format(identifier, long_format, sizeof(long_format));
+	if (long_identifier != NULL)
+		identifier = long_identifier;
+
 	if (rte_dev_probe(identifier) < 0) {
 		TESTPMD_LOG(ERR, "Failed to attach port %s\n", identifier);
 		return;
-- 
2.34.1