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From: Gaetan Rivet <gaetan.rivet@6wind.com>
To: dev@dpdk.org
Cc: Gaetan Rivet <gaetan.rivet@6wind.com>
Date: Tue, 26 Jun 2018 18:56:22 +0200
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Subject: [dpdk-dev] [PATCH v8 19/21] ethdev: register ether layer as a class
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Signed-off-by: Gaetan Rivet <gaetan.rivet@6wind.com>
---
lib/librte_ethdev/Makefile | 3 +-
lib/librte_ethdev/rte_class_eth.c | 79 +++++++++++++++++++++++++++++++++++++++
2 files changed, 81 insertions(+), 1 deletion(-)
create mode 100644 lib/librte_ethdev/rte_class_eth.c
diff --git a/lib/librte_ethdev/Makefile b/lib/librte_ethdev/Makefile
index 2fa133fbc..d4c3a8d06 100644
--- a/lib/librte_ethdev/Makefile
+++ b/lib/librte_ethdev/Makefile
@@ -12,7 +12,7 @@ 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
@@ -20,6 +20,7 @@ LIBABIVER := 9
SRCS-y += eth_private.c
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_ethdev/rte_class_eth.c b/lib/librte_ethdev/rte_class_eth.c
new file mode 100644
index 000000000..32c736d32
--- /dev/null
+++ b/lib/librte_ethdev/rte_class_eth.c
@@ -0,0 +1,79 @@
+/* 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"
+#include "eth_private.h"
+
+enum eth_params {
+ RTE_ETH_PARAMS_MAX,
+};
+
+static const char * const eth_params_keys[] = {
+ [RTE_ETH_PARAMS_MAX] = NULL,
+};
+
+struct eth_dev_match_arg {
+ struct rte_device *device;
+ struct rte_kvargs *kvlist;
+};
+
+#define eth_dev_match_arg(d, k) \
+ (&(const struct eth_dev_match_arg) { \
+ .device = (d), \
+ .kvlist = (k), \
+ })
+
+static int
+eth_dev_match(const struct rte_eth_dev *edev,
+ const void *_arg)
+{
+ const struct eth_dev_match_arg *arg = _arg;
+ const struct rte_kvargs *kvlist = arg->kvlist;
+
+ if (edev->state == RTE_ETH_DEV_UNUSED)
+ return -1;
+ if (edev->device != arg->device)
+ return -1;
+ if (kvlist == NULL)
+ /* Empty string matches everything. */
+ return 0;
+ return 0;
+}
+
+static void *
+eth_dev_iterate(const void *start,
+ const char *str,
+ const struct rte_dev_iterator *it)
+{
+ struct rte_kvargs *kvargs = NULL;
+ struct rte_eth_dev *edev = NULL;
+
+ if (str != NULL) {
+ kvargs = rte_kvargs_parse(str, eth_params_keys);
+ if (kvargs == NULL) {
+ RTE_LOG(ERR, EAL, "cannot parse argument list\n");
+ rte_errno = EINVAL;
+ return NULL;
+ }
+ }
+ edev = eth_find_device(start, eth_dev_match,
+ eth_dev_match_arg(it->device, kvargs));
+ 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