This patch adds File Descriptor(FD) port type (e.g. TAP port) to the
packet framework library that allows interface with the kernel network
stack. The FD port APIs are defined that allow port creation, writing
and reading packet from the kernel interface.
Signed-off-by: Jasvinder Singh
Acked-by: Cristian Dumitrescu
---
v3:
- fix compilation error when stats collection enabled
v2:
- fix checkpatch warnings
lib/librte_port/Makefile | 2 +
lib/librte_port/rte_port_fd.c| 552 +++
lib/librte_port/rte_port_fd.h| 105 +++
lib/librte_port/rte_port_version.map | 9 +
4 files changed, 668 insertions(+)
create mode 100644 lib/librte_port/rte_port_fd.c
create mode 100644 lib/librte_port/rte_port_fd.h
diff --git a/lib/librte_port/Makefile b/lib/librte_port/Makefile
index 3d84a0e..44fa735 100644
--- a/lib/librte_port/Makefile
+++ b/lib/librte_port/Makefile
@@ -56,6 +56,7 @@ SRCS-$(CONFIG_RTE_LIBRTE_PORT) += rte_port_frag.c
SRCS-$(CONFIG_RTE_LIBRTE_PORT) += rte_port_ras.c
endif
SRCS-$(CONFIG_RTE_LIBRTE_PORT) += rte_port_sched.c
+SRCS-$(CONFIG_RTE_LIBRTE_PORT) += rte_port_fd.c
ifeq ($(CONFIG_RTE_LIBRTE_KNI),y)
SRCS-$(CONFIG_RTE_LIBRTE_PORT) += rte_port_kni.c
endif
@@ -70,6 +71,7 @@ SYMLINK-$(CONFIG_RTE_LIBRTE_PORT)-include += rte_port_frag.h
SYMLINK-$(CONFIG_RTE_LIBRTE_PORT)-include += rte_port_ras.h
endif
SYMLINK-$(CONFIG_RTE_LIBRTE_PORT)-include += rte_port_sched.h
+SYMLINK-$(CONFIG_RTE_LIBRTE_PORT)-include += rte_port_fd.h
ifeq ($(CONFIG_RTE_LIBRTE_KNI),y)
SYMLINK-$(CONFIG_RTE_LIBRTE_PORT)-include += rte_port_kni.h
endif
diff --git a/lib/librte_port/rte_port_fd.c b/lib/librte_port/rte_port_fd.c
new file mode 100644
index 000..0d640f3
--- /dev/null
+++ b/lib/librte_port/rte_port_fd.c
@@ -0,0 +1,552 @@
+/*-
+ * BSD LICENSE
+ *
+ * Copyright(c) 2016 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Intel Corporation nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#include
+#include
+#include
+
+#include
+#include
+
+#include "rte_port_fd.h"
+
+/*
+ * Port FD Reader
+ */
+#ifdef RTE_PORT_STATS_COLLECT
+
+#define RTE_PORT_FD_READER_STATS_PKTS_IN_ADD(port, val) \
+ do { port->stats.n_pkts_in += val; } while (0)
+#define RTE_PORT_FD_READER_STATS_PKTS_DROP_ADD(port, val) \
+ do { port->stats.n_pkts_drop += val; } while (0)
+
+#else
+
+#define RTE_PORT_FD_READER_STATS_PKTS_IN_ADD(port, val)
+#define RTE_PORT_FD_READER_STATS_PKTS_DROP_ADD(port, val)
+
+#endif
+
+struct rte_port_fd_reader {
+ struct rte_port_in_stats stats;
+ int fd;
+ uint32_t mtu;
+ struct rte_mempool *mempool;
+};
+
+static void *
+rte_port_fd_reader_create(void *params, int socket_id)
+{
+ struct rte_port_fd_reader_params *conf =
+ (struct rte_port_fd_reader_params *) params;
+ struct rte_port_fd_reader *port;
+
+ /* Check input parameters */
+ if (conf == NULL) {
+ RTE_LOG(ERR, PORT, "%s: params is NULL\n", __func__);
+ return NULL;
+ }
+ if (conf->fd < 0) {
+ RTE_LOG(ERR, PORT, "%s: Invalid file descriptor\n", __func__);
+ return NULL;
+ }
+ if (conf->mtu == 0) {
+ RTE_LOG(ERR, PORT, "%s: Invalid MTU\n", __func__);
+ return NULL;
+ }
+ if (conf->mempool == NULL) {
+ RTE_LOG(ERR, PORT, "%s: Invalid mempool\n", __func__);
+
