forked from rpms/libvirt
144 lines
4.4 KiB
Diff
144 lines
4.4 KiB
Diff
From 1b2014e2206b30a743a75908a129e444761726a7 Mon Sep 17 00:00:00 2001
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Message-Id: <1b2014e2206b30a743a75908a129e444761726a7@dist-git>
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From: Moshe Levi <moshele@nvidia.com>
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Date: Thu, 28 Jan 2021 23:17:27 -0500
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Subject: [PATCH] util: add virNetDevGetPhysPortName
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This commit add virNetDevGetPhysPortName to read netdevice
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phys_port_name from sysfs. It also refactor the code so
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virNetDevGetPhysPortName and virNetDevGetPhysPortID will use
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same method to read the netdevice sysfs.
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https://bugzilla.redhat.com/1918708
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Signed-off-by: Moshe Levi <moshele@nvidia.com>
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Reviewed-by: Laine Stump <laine@redhat.com>
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(cherry picked from commit 97ebb982453bc23759c5f180799d6f2207b81c80)
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Conflicts: src/util/virnetdev.c was converted to use g_autofree upstream.
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This patch removes the need for the g_autofreed variable.
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Signed-off-by: Laine Stump <laine@redhat.com>
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Message-Id: <20210129041729.1076345-2-laine@redhat.com>
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Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
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---
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src/util/virnetdev.c | 72 +++++++++++++++++++++++++++++++++-----------
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src/util/virnetdev.h | 4 +++
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2 files changed, 59 insertions(+), 17 deletions(-)
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diff --git a/src/util/virnetdev.c b/src/util/virnetdev.c
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index e2aad07c24..52c9343d63 100644
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--- a/src/util/virnetdev.c
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+++ b/src/util/virnetdev.c
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@@ -1143,6 +1143,29 @@ virNetDevGetPCIDevice(const char *devName)
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}
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+/* A wrapper to get content of file from ifname SYSFS_NET_DIR
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+ */
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+static int
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+virNetDevGetSysfsFileValue(const char *ifname,
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+ const char *fileName,
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+ char **sysfsFileData)
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+{
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+ g_autofree char *sysfsFile = NULL;
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+
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+ *sysfsFileData = NULL;
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+
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+ if (virNetDevSysfsFile(&sysfsFile, ifname, fileName) < 0)
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+ return -1;
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+
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+ /* a failure to read just means the driver doesn't support
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+ * <fileName>, so set success now and ignore the return from
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+ * virFileReadAllQuiet().
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+ */
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+
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+ ignore_value(virFileReadAllQuiet(sysfsFile, 1024, sysfsFileData));
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+ return 0;
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+}
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+
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/**
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* virNetDevGetPhysPortID:
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*
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@@ -1161,25 +1184,29 @@ int
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virNetDevGetPhysPortID(const char *ifname,
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char **physPortID)
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{
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- int ret = -1;
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- char *physPortIDFile = NULL;
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-
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- *physPortID = NULL;
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-
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- if (virNetDevSysfsFile(&physPortIDFile, ifname, "phys_port_id") < 0)
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- goto cleanup;
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-
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- /* a failure to read just means the driver doesn't support
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- * phys_port_id, so set success now and ignore the return from
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- * virFileReadAllQuiet().
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- */
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- ret = 0;
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+ return virNetDevGetSysfsFileValue(ifname, "phys_port_id", physPortID);
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+}
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- ignore_value(virFileReadAllQuiet(physPortIDFile, 1024, physPortID));
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- cleanup:
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- VIR_FREE(physPortIDFile);
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- return ret;
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+/**
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+ * virNetDevGetPhysPortName:
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+ *
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+ * @ifname: name of a netdev
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+ *
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+ * @physPortName: pointer to char* that will receive @ifname's
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+ * phys_port_name from sysfs (null terminated
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+ * string). Could be NULL if @ifname's net driver doesn't
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+ * support phys_port_name (most netdev drivers
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+ * don't). Caller is responsible for freeing the string
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+ * when finished.
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+ *
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+ * Returns 0 on success or -1 on failure.
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+ */
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+int
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+virNetDevGetPhysPortName(const char *ifname,
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+ char **physPortName)
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+{
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+ return virNetDevGetSysfsFileValue(ifname, "phys_port_name", physPortName);
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}
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@@ -1461,6 +1488,17 @@ virNetDevGetPhysPortID(const char *ifname G_GNUC_UNUSED,
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return 0;
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}
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+int
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+virNetDevGetPhysPortName(const char *ifname G_GNUC_UNUSED,
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+ char **physPortName)
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+{
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+ /* this actually should never be called, and is just here to
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+ * satisfy the linker.
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+ */
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+ *physPortName = NULL;
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+ return 0;
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+}
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+
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int
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virNetDevGetVirtualFunctions(const char *pfname G_GNUC_UNUSED,
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char ***vfname G_GNUC_UNUSED,
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diff --git a/src/util/virnetdev.h b/src/util/virnetdev.h
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index 24b41498ed..26fe76cc2c 100644
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--- a/src/util/virnetdev.h
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+++ b/src/util/virnetdev.h
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@@ -227,6 +227,10 @@ int virNetDevGetPhysPortID(const char *ifname,
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char **physPortID)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2)
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G_GNUC_WARN_UNUSED_RESULT;
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+int virNetDevGetPhysPortName(const char *ifname,
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+ char **physPortName)
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+ ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2)
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+ G_GNUC_WARN_UNUSED_RESULT;
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int virNetDevGetVirtualFunctions(const char *pfname,
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char ***vfname,
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--
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2.30.0
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