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From: Pallavi Kadam <pallavi.kadam@intel.com>
To: dev@dpdk.org,
thomas@monjalon.net
Cc: Harini.Ramakrishnan@microsoft.com, keith.wiles@intel.com,
bruce.richardson@intel.com, ranjit.menon@intel.com,
antara.ganesh.kolar@intel.com, pallavi.kadam@intel.com
Date: Thu, 26 Sep 2019 13:29:22 -0700
Message-Id: <20190926202924.6876-8-pallavi.kadam@intel.com>
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<20190926202924.6876-1-pallavi.kadam@intel.com>
Subject: [dpdk-dev] [PATCH v2 7/9] eal: add function to detect process type
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Adding a function to detect process type and include
header files to contain suitable function declarations.
Signed-off-by: Pallavi Kadam <pallavi.kadam@intel.com>
Signed-off-by: Antara Ganesh Kolar <antara.ganesh.kolar@intel.com>
Reviewed-by: Ranjit Menon <ranjit.menon@intel.com>
Reviewed-by: Keith Wiles <keith.wiles@intel.com>
---
lib/librte_eal/windows/eal/eal.c | 51 ++++++++++++++++++++++++-
lib/librte_eal/windows/eal/eal_thread.c | 3 ++
2 files changed, 53 insertions(+), 1 deletion(-)
diff --git a/lib/librte_eal/windows/eal/eal.c b/lib/librte_eal/windows/eal/eal.c
index 83907ffa6..ffe5b8552 100644
--- a/lib/librte_eal/windows/eal/eal.c
+++ b/lib/librte_eal/windows/eal/eal.c
@@ -2,21 +2,38 @@
* Copyright(c) 2019 Intel Corporation
*/
+#include <sys/stat.h>
#include <io.h>
#include <fcntl.h>
#include <rte_debug.h>
#include <rte_eal.h>
+#include <eal_memcfg.h>
#include <rte_errno.h>
#include <rte_lcore.h>
#include <eal_thread.h>
+#include <eal_internal_cfg.h>
+#include <eal_filesystem.h>
#include <eal_private.h>
+/* define fd variable here, because file needs to be kept open for the
+ * duration of the program, as we hold a write lock on it in the primary proc
+ */
+static int mem_cfg_fd = -1; // INVALID_HANDLE_VALUE;
+
+/* early configuration structure, when memory config is not mmapped */
+static struct rte_mem_config early_mem_config;
+
/* Address of global and public configuration */
-static struct rte_config rte_config;
+static struct rte_config rte_config = {
+ .mem_config = &early_mem_config,
+};
/* internal configuration (per-core) */
struct lcore_config lcore_config[RTE_MAX_LCORE];
+/* internal configuration */
+struct internal_config internal_config;
+
/* Return a pointer to the configuration structure */
struct rte_config *
rte_eal_get_configuration(void)
@@ -24,6 +41,38 @@ rte_eal_get_configuration(void)
return &rte_config;
}
+/* Detect if we are a primary or a secondary process */
+enum rte_proc_type_t
+ eal_proc_type_detect(void)
+{
+ enum rte_proc_type_t ptype = RTE_PROC_PRIMARY;
+ const char *pathname = eal_runtime_config_path();
+
+ /* if we can open the file but not get a write-lock we are a secondary
+ * process. NOTE: if we get a file handle back, we keep that open
+ * and don't close it to prevent a race condition between multiple opens
+ */
+ errno_t err = _sopen_s(&mem_cfg_fd, pathname,
+ _O_RDWR, _SH_DENYNO, _S_IREAD | _S_IWRITE);
+ if (err == 0) {
+ OVERLAPPED sOverlapped = { 0 };
+ sOverlapped.Offset = sizeof(*rte_config.mem_config);
+ sOverlapped.OffsetHigh = 0;
+
+ HANDLE hWinFileHandle = (HANDLE)_get_osfhandle(mem_cfg_fd);
+
+ if (!LockFileEx(hWinFileHandle,
+ LOCKFILE_EXCLUSIVE_LOCK | LOCKFILE_FAIL_IMMEDIATELY, 0,
+ sizeof(*rte_config.mem_config), 0, &sOverlapped))
+ ptype = RTE_PROC_SECONDARY;
+ }
+
+ RTE_LOG(INFO, EAL, "Auto-detected process type: %s\n",
+ ptype == RTE_PROC_PRIMARY ? "PRIMARY" : "SECONDARY");
+
+ return ptype;
+}
+
/* Parse the arguments for --log-level only */
static void
eal_log_level_parse(__rte_unused int argc, __rte_unused char **argv)
diff --git a/lib/librte_eal/windows/eal/eal_thread.c b/lib/librte_eal/windows/eal/eal_thread.c
index 6e5e6f4ab..54b9c1dd1 100644
--- a/lib/librte_eal/windows/eal/eal_thread.c
+++ b/lib/librte_eal/windows/eal/eal_thread.c
@@ -10,10 +10,13 @@
#include <rte_lcore.h>
#include <rte_per_lcore.h>
#include <rte_common.h>
+#include <rte_memory.h>
#include <eal_thread.h>
RTE_DEFINE_PER_LCORE(unsigned int, _lcore_id) = LCORE_ID_ANY;
+RTE_DEFINE_PER_LCORE(unsigned int, _socket_id) = (unsigned int)SOCKET_ID_ANY;
+RTE_DEFINE_PER_LCORE(rte_cpuset_t, _cpuset);
/*
* Send a message to a slave lcore identified by slave_id to call a
--
2.18.0.windows.1