[dpdk-dev] [PATCH v2 16/18] ethdev: register ether layer as a class

Gaetan Rivet gaetan.rivet at 6wind.com
Wed Mar 21 18:15:37 CET 2018


Signed-off-by: Gaetan Rivet <gaetan.rivet at 6wind.com>
---
 lib/Makefile                     |  2 +-
 lib/librte_ether/Makefile        |  3 +-
 lib/librte_ether/rte_class_eth.c | 65 ++++++++++++++++++++++++++++++++++++++++
 3 files changed, 68 insertions(+), 2 deletions(-)
 create mode 100644 lib/librte_ether/rte_class_eth.c

diff --git a/lib/Makefile b/lib/Makefile
index ec965a606..6bb6a8bed 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -20,7 +20,7 @@ DIRS-$(CONFIG_RTE_LIBRTE_CMDLINE) += librte_cmdline
 DEPDIRS-librte_cmdline := librte_eal
 DIRS-$(CONFIG_RTE_LIBRTE_ETHER) += librte_ether
 DEPDIRS-librte_ether := librte_net librte_eal librte_mempool librte_ring
-DEPDIRS-librte_ether += librte_mbuf
+DEPDIRS-librte_ether += librte_mbuf librte_kvargs
 DIRS-$(CONFIG_RTE_LIBRTE_BBDEV) += librte_bbdev
 DEPDIRS-librte_bbdev := librte_eal librte_mempool librte_mbuf
 DIRS-$(CONFIG_RTE_LIBRTE_CRYPTODEV) += librte_cryptodev
diff --git a/lib/librte_ether/Makefile b/lib/librte_ether/Makefile
index 3ca5782bb..a1a0393de 100644
--- a/lib/librte_ether/Makefile
+++ b/lib/librte_ether/Makefile
@@ -12,13 +12,14 @@ CFLAGS += -DALLOW_EXPERIMENTAL_API
 CFLAGS += -O3
 CFLAGS += $(WERROR_FLAGS)
 LDLIBS += -lrte_net -lrte_eal -lrte_mempool -lrte_ring
-LDLIBS += -lrte_mbuf
+LDLIBS += -lrte_mbuf -lrte_kvargs
 
 EXPORT_MAP := rte_ethdev_version.map
 
 LIBABIVER := 8
 
 SRCS-y += rte_ethdev.c
+SRCS-y += rte_class_eth.c
 SRCS-y += rte_flow.c
 SRCS-y += rte_tm.c
 SRCS-y += rte_mtr.c
diff --git a/lib/librte_ether/rte_class_eth.c b/lib/librte_ether/rte_class_eth.c
new file mode 100644
index 000000000..3f1537c2a
--- /dev/null
+++ b/lib/librte_ether/rte_class_eth.c
@@ -0,0 +1,65 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2018 Gaëtan Rivet
+ */
+
+#include <string.h>
+
+#include <rte_class.h>
+#include <rte_compat.h>
+#include <rte_errno.h>
+#include <rte_kvargs.h>
+#include <rte_log.h>
+
+#include "rte_ethdev.h"
+#include "rte_ethdev_core.h"
+
+static int
+eth_dev_match(struct rte_eth_dev *edev,
+	      struct rte_kvargs *kvlist)
+{
+	(void) kvlist;
+	(void) edev;
+	return 0;
+}
+
+static void *
+eth_dev_iterate(const void *_start,
+		const char *str,
+		const struct rte_dev_iterator *it)
+{
+	const struct rte_eth_dev *start = _start;
+	struct rte_device *dev = it->device;
+	struct rte_kvargs *kvargs = NULL;
+	struct rte_eth_dev *edev = NULL;
+	uint16_t p = 0;
+
+	if (str != NULL) {
+		kvargs = rte_kvargs_parse(str, NULL);
+		if (kvargs == NULL) {
+			RTE_LOG(ERR, EAL, "cannot parse argument list\n");
+			rte_errno = EINVAL;
+			return NULL;
+		}
+	}
+	if (start)
+		p = start->data->port_id + 1;
+	for (p = rte_eth_find_next(p);
+	     p < RTE_MAX_ETHPORTS;
+	     p = rte_eth_find_next(p + 1)) {
+		edev = &rte_eth_devices[p];
+		if (dev != edev->device)
+			goto next_ethdev;
+		if (eth_dev_match(edev, kvargs) == 0)
+			break;
+next_ethdev:
+		edev = NULL;
+	}
+	rte_kvargs_free(kvargs);
+	return edev;
+}
+
+struct rte_class rte_class_eth = {
+	.dev_iterate = eth_dev_iterate,
+};
+
+RTE_REGISTER_CLASS(eth, rte_class_eth);
-- 
2.11.0



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