--- /dev/null
+/*-
+ * BSD LICENSE
+ *
+ * Copyright 2017 6WIND S.A.
+ * Copyright 2017 Mellanox.
+ *
+ * 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 6WIND S.A. 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.
+ */
+
+#ifndef _RTE_ETH_FAILSAFE_PRIVATE_H_
+#define _RTE_ETH_FAILSAFE_PRIVATE_H_
+
+#include <rte_dev.h>
+#include <rte_ethdev.h>
+#include <rte_devargs.h>
+
+#define FAILSAFE_DRIVER_NAME "Fail-safe PMD"
+
+#define PMD_FAILSAFE_MAC_KVARG "mac"
+#define PMD_FAILSAFE_PARAM_STRING \
+ "dev(<ifc>)," \
+ "mac=mac_addr" \
+ ""
+
+#define FAILSAFE_MAX_ETHPORTS 2
+#define FAILSAFE_MAX_ETHADDR 128
+
+/* TYPES */
+
+struct rxq {
+ struct fs_priv *priv;
+ uint16_t qid;
+ /* id of last sub_device polled */
+ uint8_t last_polled;
+ unsigned int socket_id;
+ struct rte_eth_rxq_info info;
+};
+
+struct txq {
+ struct fs_priv *priv;
+ uint16_t qid;
+ unsigned int socket_id;
+ struct rte_eth_txq_info info;
+};
+
+enum dev_state {
+ DEV_UNDEFINED,
+ DEV_PARSED,
+ DEV_PROBED,
+ DEV_ACTIVE,
+ DEV_STARTED,
+};
+
+struct sub_device {
+ /* Exhaustive DPDK device description */
+ struct rte_devargs devargs;
+ struct rte_bus *bus;
+ struct rte_device *dev;
+ struct rte_eth_dev *edev;
+ /* Device state machine */
+ enum dev_state state;
+};
+
+struct fs_priv {
+ struct rte_eth_dev *dev;
+ /*
+ * Set of sub_devices.
+ * subs[0] is the preferred device
+ * any other is just another slave
+ */
+ struct sub_device *subs;
+ uint8_t subs_head; /* if head == tail, no subs */
+ uint8_t subs_tail; /* first invalid */
+ uint8_t subs_tx; /* current emitting device */
+ uint8_t current_probed;
+ /* current number of mac_addr slots allocated. */
+ uint32_t nb_mac_addr;
+ struct ether_addr mac_addrs[FAILSAFE_MAX_ETHADDR];
+ uint32_t mac_addr_pool[FAILSAFE_MAX_ETHADDR];
+ /* current capabilities */
+ struct rte_eth_dev_info infos;
+};
+
+/* RX / TX */
+
+uint16_t failsafe_rx_burst(void *rxq,
+ struct rte_mbuf **rx_pkts, uint16_t nb_pkts);
+uint16_t failsafe_tx_burst(void *txq,
+ struct rte_mbuf **tx_pkts, uint16_t nb_pkts);
+
+/* ARGS */
+
+int failsafe_args_parse(struct rte_eth_dev *dev, const char *params);
+void failsafe_args_free(struct rte_eth_dev *dev);
+int failsafe_args_count_subdevice(struct rte_eth_dev *dev, const char *params);
+
+/* EAL */
+
+int failsafe_eal_init(struct rte_eth_dev *dev);
+int failsafe_eal_uninit(struct rte_eth_dev *dev);
+
+/* GLOBALS */
+
+extern const char pmd_failsafe_driver_name[];
+extern const struct eth_dev_ops failsafe_ops;
+extern int mac_from_arg;
+
+/* HELPERS */
+
+/* dev: (struct rte_eth_dev *) fail-safe device */
+#define PRIV(dev) \
+ ((struct fs_priv *)(dev)->data->dev_private)
+
+/* sdev: (struct sub_device *) */
+#define ETH(sdev) \
+ ((sdev)->edev)
+
+/* sdev: (struct sub_device *) */
+#define PORT_ID(sdev) \
+ (ETH(sdev)->data->port_id)
+
+/**
+ * Stateful iterator construct over fail-safe sub-devices:
+ * s: (struct sub_device *), iterator
+ * i: (uint8_t), increment
+ * dev: (struct rte_eth_dev *), fail-safe ethdev
+ * state: (enum dev_state), minimum acceptable device state
+ */
+#define FOREACH_SUBDEV_STATE(s, i, dev, state) \
+ for (i = fs_find_next((dev), 0, state); \
+ i < PRIV(dev)->subs_tail && (s = &PRIV(dev)->subs[i]); \
+ i = fs_find_next((dev), i + 1, state))
+
+/**
+ * Iterator construct over fail-safe sub-devices:
+ * s: (struct sub_device *), iterator
+ * i: (uint8_t), increment
+ * dev: (struct rte_eth_dev *), fail-safe ethdev
+ */
+#define FOREACH_SUBDEV(s, i, dev) \
+ FOREACH_SUBDEV_STATE(s, i, dev, DEV_UNDEFINED)
+
+/* dev: (struct rte_eth_dev *) fail-safe device */
+#define PREFERRED_SUBDEV(dev) \
+ (&PRIV(dev)->subs[0])
+
+/* dev: (struct rte_eth_dev *) fail-safe device */
+#define TX_SUBDEV(dev) \
+ (PRIV(dev)->subs_tx >= PRIV(dev)->subs_tail ? NULL \
+ : (PRIV(dev)->subs[PRIV(dev)->subs_tx].state < DEV_PROBED ? NULL \
+ : &PRIV(dev)->subs[PRIV(dev)->subs_tx]))
+
+/**
+ * s: (struct sub_device *)
+ * ops: (struct eth_dev_ops) member
+ */
+#define SUBOPS(s, ops) \
+ (ETH(s)->dev_ops->ops)
+
+#define LOG__(level, m, ...) \
+ RTE_LOG(level, PMD, "net_failsafe: " m "%c", __VA_ARGS__)
+#define LOG_(level, ...) LOG__(level, __VA_ARGS__, '\n')
+#define DEBUG(...) LOG_(DEBUG, __VA_ARGS__)
+#define INFO(...) LOG_(INFO, __VA_ARGS__)
+#define WARN(...) LOG_(WARNING, __VA_ARGS__)
+#define ERROR(...) LOG_(ERR, __VA_ARGS__)
+
+/* inlined functions */
+
+static inline uint8_t
+fs_find_next(struct rte_eth_dev *dev, uint8_t sid,
+ enum dev_state min_state)
+{
+ while (sid < PRIV(dev)->subs_tail) {
+ if (PRIV(dev)->subs[sid].state >= min_state)
+ break;
+ sid++;
+ }
+ if (sid >= PRIV(dev)->subs_tail)
+ return PRIV(dev)->subs_tail;
+ return sid;
+}
+
+#endif /* _RTE_ETH_FAILSAFE_PRIVATE_H_ */
git.droids-corp.org / dpdk.git / blobdiff