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From: Jan Viktorin <viktorin@rehivetech.com>
To: dev@dpdk.org
Cc: Jan Viktorin <viktorin@rehivetech.com>,
David Marchand <david.marchand@6wind.com>,
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jerin.jacob@caviumnetworks.com, Keith Wiles <keith.wiles@intel.com>,
Stephen Hemminger <stephen@networkplumber.org>
Date: Fri, 6 May 2016 15:47:55 +0200
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Subject: [dpdk-dev] [PATCH v1 13/28] eal/soc: update device on probe when
already exists
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Signed-off-by: Jan Viktorin <viktorin@rehivetech.com>
---
lib/librte_eal/common/eal_common_soc.c | 5 +++++
lib/librte_eal/common/eal_private.h | 13 +++++++++++++
lib/librte_eal/linuxapp/eal/eal_soc.c | 11 +++++++++++
3 files changed, 29 insertions(+)
diff --git a/lib/librte_eal/common/eal_common_soc.c b/lib/librte_eal/common/eal_common_soc.c
index 3b885e8..75a7a97 100644
--- a/lib/librte_eal/common/eal_common_soc.c
+++ b/lib/librte_eal/common/eal_common_soc.c
@@ -242,6 +242,11 @@ rte_eal_soc_probe_one(const struct rte_soc_addr *addr)
if (addr == NULL)
return -1;
+ /* update current SoC device in global list, kernel bindings might have
+ * changed since last time we looked at it */
+ if (soc_update_device(addr) < 0)
+ goto err_return;
+
TAILQ_FOREACH(dev, &soc_device_list, next) {
if (rte_eal_compare_soc_addr(&dev->addr, addr))
continue;
diff --git a/lib/librte_eal/common/eal_private.h b/lib/librte_eal/common/eal_private.h
index b27ec89..fc1d9c6 100644
--- a/lib/librte_eal/common/eal_private.h
+++ b/lib/librte_eal/common/eal_private.h
@@ -197,6 +197,19 @@ struct rte_soc_device;
*/
int rte_eal_soc_init(void);
+/**
+ * Update a soc device object by asking the kernel for the latest information.
+ *
+ * This function is private to EAL.
+ *
+ * @param addr
+ * The SoC address to look for
+ * @return
+ * - 0 on success.
+ * - negative on error.
+ */
+int soc_update_device(const struct rte_soc_addr *addr);
+
struct rte_pci_driver;
struct rte_pci_device;
diff --git a/lib/librte_eal/linuxapp/eal/eal_soc.c b/lib/librte_eal/linuxapp/eal/eal_soc.c
index a3b9935..742d80d 100644
--- a/lib/librte_eal/linuxapp/eal/eal_soc.c
+++ b/lib/librte_eal/linuxapp/eal/eal_soc.c
@@ -252,6 +252,17 @@ fail:
}
int
+soc_update_device(const struct rte_soc_addr *addr)
+{
+ char filename[PATH_MAX];
+
+ snprintf(filename, sizeof(filename), "%s/%s",
+ soc_get_sysfs_path(), addr->name);
+
+ return soc_scan_one(filename, addr->name);
+}
+
+int
rte_eal_soc_scan(void)
{
struct dirent *e;
--
2.8.0