New upstream version 17.11-rc3

Change-Id: I6a5baa40612fe0c20f30b5fa773a6cbbac63a685
Signed-off-by: Luca Boccassi <luca.boccassi@gmail.com>

1 files changed, 99 insertions, 302 deletions

diff --git a/drivers/net/mlx4/mlx4.h b/drivers/net/mlx4/mlx4.h
index c0ade4f1..3aeef87e 100644
--- a/drivers/net/mlx4/mlx4.h
+++ b/drivers/net/mlx4/mlx4.h
@@ -1,8 +1,8 @@
 /*-
  *   BSD LICENSE
  *
- *   Copyright 2012-2017 6WIND S.A.
- *   Copyright 2012-2017 Mellanox.
+ *   Copyright 2012 6WIND S.A.
+ *   Copyright 2012 Mellanox
  *
  *   Redistribution and use in source and binary forms, with or without
  *   modification, are permitted provided that the following conditions
@@ -34,29 +34,11 @@
 #ifndef RTE_PMD_MLX4_H_
 #define RTE_PMD_MLX4_H_
 
-#include <stddef.h>
+#include <net/if.h>
 #include <stdint.h>
-#include <limits.h>
+#include <sys/queue.h>
 
-/*
- * Runtime logging through RTE_LOG() is enabled when not in debugging mode.
- * Intermediate LOG_*() macros add the required end-of-line characters.
- */
-#ifndef NDEBUG
-#define INFO(...) DEBUG(__VA_ARGS__)
-#define WARN(...) DEBUG(__VA_ARGS__)
-#define ERROR(...) DEBUG(__VA_ARGS__)
-#else
-#define LOG__(level, m, ...) \
-	RTE_LOG(level, PMD, MLX4_DRIVER_NAME ": " m "%c", __VA_ARGS__)
-#define LOG_(level, ...) LOG__(level, __VA_ARGS__, '\n')
-#define INFO(...) LOG_(INFO, __VA_ARGS__)
-#define WARN(...) LOG_(WARNING, __VA_ARGS__)
-#define ERROR(...) LOG_(ERR, __VA_ARGS__)
-#endif
-
-/* Verbs header. */
-/* ISO C doesn't support unnamed structs/unions, disabling -pedantic. */
+/* Verbs headers do not support -pedantic. */
 #ifdef PEDANTIC
 #pragma GCC diagnostic ignored "-Wpedantic"
 #endif
@@ -65,36 +47,25 @@
 #pragma GCC diagnostic error "-Wpedantic"
 #endif
 
-/*
- * Maximum number of simultaneous MAC addresses supported.
- *
- * According to ConnectX's Programmer Reference Manual:
- *   The L2 Address Match is implemented by comparing a MAC/VLAN combination
- *   of 128 MAC addresses and 127 VLAN values, comprising 128x127 possible
- *   L2 addresses.
- */
-#define MLX4_MAX_MAC_ADDRESSES 128
+#include <rte_ethdev.h>
+#include <rte_ether.h>
+#include <rte_interrupts.h>
+#include <rte_mempool.h>
+#include <rte_spinlock.h>
 
-/* Maximum number of simultaneous VLAN filters supported. See above. */
-#define MLX4_MAX_VLAN_IDS 127
+/** Maximum number of simultaneous MAC addresses. This value is arbitrary. */
+#define MLX4_MAX_MAC_ADDRESSES 128
 
-/* Request send completion once in every 64 sends, might be less. */
+/** Request send completion once in every 64 sends, might be less. */
 #define MLX4_PMD_TX_PER_COMP_REQ 64
 
-/* Maximum number of physical ports. */
-#define MLX4_PMD_MAX_PHYS_PORTS 2
-
-/* Maximum number of Scatter/Gather Elements per Work Request. */
-#ifndef MLX4_PMD_SGE_WR_N
-#define MLX4_PMD_SGE_WR_N 4
-#endif
-
-/* Maximum size for inline data. */
-#ifndef MLX4_PMD_MAX_INLINE
+/** Maximum size for inline data. */
 #define MLX4_PMD_MAX_INLINE 0
-#endif
 
-/*
+/** Fixed RSS hash key size in bytes. Cannot be modified. */
+#define MLX4_RSS_HASH_KEY_SIZE 40
+
+/**
  * Maximum number of cached Memory Pools (MPs) per TX queue. Each RTE MP
  * from which buffers are to be transmitted will have to be mapped by this
  * driver to their own Memory Region (MR). This is a slow operation.
@@ -105,18 +76,10 @@
 #define MLX4_PMD_TX_MP_CACHE 8
 #endif
 
-/*
- * If defined, only use software counters. The PMD will never ask the hardware
- * for these, and many of them won't be available.
- */
-#ifndef MLX4_PMD_SOFT_COUNTERS
-#define MLX4_PMD_SOFT_COUNTERS 1
-#endif
-
-/* Alarm timeout. */
-#define MLX4_ALARM_TIMEOUT_US 100000
+/** Interrupt alarm timeout value in microseconds. */
+#define MLX4_INTR_ALARM_TIMEOUT 100000
 
-/* Port parameter. */
+/** Port parameter. */
 #define MLX4_PMD_PORT_KVARG "port"
 
 enum {
@@ -129,258 +92,92 @@ enum {
 	PCI_DEVICE_ID_MELLANOX_CONNECTX3PRO = 0x1007,
 };
 
+/** Driver name reported to lower layers and used in log output. */
 #define MLX4_DRIVER_NAME "net_mlx4"
 
-/* Bit-field manipulation. */
-#define BITFIELD_DECLARE(bf, type, size)				\
-	type bf[(((size_t)(size) / (sizeof(type) * CHAR_BIT)) +		\
-		 !!((size_t)(size) % (sizeof(type) * CHAR_BIT)))]
-#define BITFIELD_DEFINE(bf, type, size)					\
-	BITFIELD_DECLARE((bf), type, (size)) = { 0 }
-#define BITFIELD_SET(bf, b)						\
-	(assert((size_t)(b) < (sizeof(bf) * CHAR_BIT)),			\
-	 (void)((bf)[((b) / (sizeof((bf)[0]) * CHAR_BIT))] |=		\
-		((size_t)1 << ((b) % (sizeof((bf)[0]) * CHAR_BIT)))))
-#define BITFIELD_RESET(bf, b)						\
-	(assert((size_t)(b) < (sizeof(bf) * CHAR_BIT)),			\
-	 (void)((bf)[((b) / (sizeof((bf)[0]) * CHAR_BIT))] &=		\
-		~((size_t)1 << ((b) % (sizeof((bf)[0]) * CHAR_BIT)))))
-#define BITFIELD_ISSET(bf, b)						\
-	(assert((size_t)(b) < (sizeof(bf) * CHAR_BIT)),			\
-	 !!(((bf)[((b) / (sizeof((bf)[0]) * CHAR_BIT))] &		\
-	     ((size_t)1 << ((b) % (sizeof((bf)[0]) * CHAR_BIT))))))
-
-/* Number of elements in array. */
-#define elemof(a) (sizeof(a) / sizeof((a)[0]))
-
-/* Cast pointer p to structure member m to its parent structure of type t. */
-#define containerof(p, t, m) ((t *)((uint8_t *)(p) - offsetof(t, m)))
-
-/* Branch prediction helpers. */
-#ifndef likely
-#define likely(c) __builtin_expect(!!(c), 1)
-#endif
-#ifndef unlikely
-#define unlikely(c) __builtin_expect(!!(c), 0)
-#endif
-
-/* Debugging */
-#ifndef NDEBUG
-#include <stdio.h>
-#define DEBUG__(m, ...)						\
-	(fprintf(stderr, "%s:%d: %s(): " m "%c",		\
-		 __FILE__, __LINE__, __func__, __VA_ARGS__),	\
-	 fflush(stderr),					\
-	 (void)0)
-/*
- * Save/restore errno around DEBUG__().
- * XXX somewhat undefined behavior, but works.
- */
-#define DEBUG_(...)				\
-	(errno = ((int []){			\
-		*(volatile int *)&errno,	\
-		(DEBUG__(__VA_ARGS__), 0)	\
-	})[0])
-#define DEBUG(...) DEBUG_(__VA_ARGS__, '\n')
-#ifndef MLX4_PMD_DEBUG_BROKEN_VERBS
-#define claim_zero(...) assert((__VA_ARGS__) == 0)
-#else /* MLX4_PMD_DEBUG_BROKEN_VERBS */
-#define claim_zero(...) \
-	(void)(((__VA_ARGS__) == 0) || \
-		DEBUG("Assertion `(" # __VA_ARGS__ ") == 0' failed (IGNORED)."))
-#endif /* MLX4_PMD_DEBUG_BROKEN_VERBS */
-#define claim_nonzero(...) assert((__VA_ARGS__) != 0)
-#define claim_positive(...) assert((__VA_ARGS__) >= 0)
-#else /* NDEBUG */
-/* No-ops. */
-#define DEBUG(...) (void)0
-#define claim_zero(...) (__VA_ARGS__)
-#define claim_nonzero(...) (__VA_ARGS__)
-#define claim_positive(...) (__VA_ARGS__)
-#endif /* NDEBUG */
-
-struct mlx4_rxq_stats {
-	unsigned int idx; /**< Mapping index. */
-#ifdef MLX4_PMD_SOFT_COUNTERS
-	uint64_t ipackets; /**< Total of successfully received packets. */
-	uint64_t ibytes; /**< Total of successfully received bytes. */
-#endif
-	uint64_t idropped; /**< Total of packets dropped when RX ring full. */
-	uint64_t rx_nombuf; /**< Total of RX mbuf allocation failures. */
-};
-
-/* RX element (scattered packets). */
-struct rxq_elt_sp {
-	struct ibv_recv_wr wr; /* Work Request. */
-	struct ibv_sge sges[MLX4_PMD_SGE_WR_N]; /* Scatter/Gather Elements. */
-	struct rte_mbuf *bufs[MLX4_PMD_SGE_WR_N]; /* SGEs buffers. */
-};
-
-/* RX element. */
-struct rxq_elt {
-	struct ibv_recv_wr wr; /* Work Request. */
-	struct ibv_sge sge; /* Scatter/Gather Element. */
-	/* mbuf pointer is derived from WR_ID(wr.wr_id).offset. */
-};
-
-/* RX queue descriptor. */
-struct rxq {
-	LIST_ENTRY(rxq) next; /* Used by parent queue only */
-	struct priv *priv; /* Back pointer to private data. */
-	struct rte_mempool *mp; /* Memory Pool for allocations. */
-	struct ibv_mr *mr; /* Memory Region (for mp). */
-	struct ibv_cq *cq; /* Completion Queue. */
-	struct ibv_qp *qp; /* Queue Pair. */
-	struct ibv_exp_qp_burst_family *if_qp; /* QP burst interface. */
-	struct ibv_exp_cq_family *if_cq; /* CQ interface. */
-	struct ibv_comp_channel *channel;
-	/*
-	 * Each VLAN ID requires a separate flow steering rule.
-	 */
-	BITFIELD_DECLARE(mac_configured, uint32_t, MLX4_MAX_MAC_ADDRESSES);
-	struct ibv_flow *mac_flow[MLX4_MAX_MAC_ADDRESSES][MLX4_MAX_VLAN_IDS];
-	struct ibv_flow *promisc_flow; /* Promiscuous flow. */
-	struct ibv_flow *allmulti_flow; /* Multicast flow. */
-	unsigned int port_id; /* Port ID for incoming packets. */
-	unsigned int elts_n; /* (*elts)[] length. */
-	unsigned int elts_head; /* Current index in (*elts)[]. */
-	union {
-		struct rxq_elt_sp (*sp)[]; /* Scattered RX elements. */
-		struct rxq_elt (*no_sp)[]; /* RX elements. */
-	} elts;
-	unsigned int sp:1; /* Use scattered RX elements. */
-	unsigned int csum:1; /* Enable checksum offloading. */
-	unsigned int csum_l2tun:1; /* Same for L2 tunnels. */
-	struct mlx4_rxq_stats stats; /* RX queue counters. */
-	unsigned int socket; /* CPU socket ID for allocations. */
-	struct ibv_exp_res_domain *rd; /* Resource Domain. */
-	struct {
-		uint16_t queues_n;
-		uint16_t queues[RTE_MAX_QUEUES_PER_PORT];
-	} rss;
-};
-
-/* TX element. */
-struct txq_elt {
-	struct rte_mbuf *buf;
-};
-
-struct mlx4_txq_stats {
-	unsigned int idx; /**< Mapping index. */
-#ifdef MLX4_PMD_SOFT_COUNTERS
-	uint64_t opackets; /**< Total of successfully sent packets. */
-	uint64_t obytes;   /**< Total of successfully sent bytes. */
-#endif
-	uint64_t odropped; /**< Total of packets not sent when TX ring full. */
-};
-
-/*
- * Linear buffer type. It is used when transmitting buffers with too many
- * segments that do not fit the hardware queue (see max_send_sge).
- * Extra segments are copied (linearized) in such buffers, replacing the
- * last SGE during TX.
- * The size is arbitrary but large enough to hold a jumbo frame with
- * 8 segments considering mbuf.buf_len is about 2048 bytes.
- */
-typedef uint8_t linear_t[16384];
+struct mlx4_drop;
+struct mlx4_rss;
+struct rxq;
+struct txq;
+struct rte_flow;
 
-/* TX queue descriptor. */
-struct txq {
-	struct priv *priv; /* Back pointer to private data. */
-	struct {
-		const struct rte_mempool *mp; /* Cached Memory Pool. */
-		struct ibv_mr *mr; /* Memory Region (for mp). */
-		uint32_t lkey; /* mr->lkey */
-	} mp2mr[MLX4_PMD_TX_MP_CACHE]; /* MP to MR translation table. */
-	struct ibv_cq *cq; /* Completion Queue. */
-	struct ibv_qp *qp; /* Queue Pair. */
-	struct ibv_exp_qp_burst_family *if_qp; /* QP burst interface. */
-	struct ibv_exp_cq_family *if_cq; /* CQ interface. */
-#if MLX4_PMD_MAX_INLINE > 0
-	uint32_t max_inline; /* Max inline send size <= MLX4_PMD_MAX_INLINE. */
-#endif
-	unsigned int elts_n; /* (*elts)[] length. */
-	struct txq_elt (*elts)[]; /* TX elements. */
-	unsigned int elts_head; /* Current index in (*elts)[]. */
-	unsigned int elts_tail; /* First element awaiting completion. */
-	unsigned int elts_comp; /* Number of completion requests. */
-	unsigned int elts_comp_cd; /* Countdown for next completion request. */
-	unsigned int elts_comp_cd_init; /* Initial value for countdown. */
-	struct mlx4_txq_stats stats; /* TX queue counters. */
-	linear_t (*elts_linear)[]; /* Linearized buffers. */
-	struct ibv_mr *mr_linear; /* Memory Region for linearized buffers. */
-	unsigned int socket; /* CPU socket ID for allocations. */
-	struct ibv_exp_res_domain *rd; /* Resource Domain. */
+/** Memory region descriptor. */
+struct mlx4_mr {
+	LIST_ENTRY(mlx4_mr) next; /**< Next entry in list. */
+	uintptr_t start; /**< Base address for memory region. */
+	uintptr_t end; /**< End address for memory region. */
+	uint32_t lkey; /**< L_Key extracted from @p mr. */
+	uint32_t refcnt; /**< Reference count for this object. */
+	struct priv *priv; /**< Back pointer to private data. */
+	struct ibv_mr *mr; /**< Memory region associated with @p mp. */
+	struct rte_mempool *mp; /**< Target memory pool (mempool). */
 };
 
-struct rte_flow;
-
+/** Private data structure. */
 struct priv {
-	struct rte_eth_dev *dev; /* Ethernet device. */
-	struct ibv_context *ctx; /* Verbs context. */
-	struct ibv_device_attr device_attr; /* Device properties. */
-	struct ibv_pd *pd; /* Protection Domain. */
-	/*
-	 * MAC addresses array and configuration bit-field.
-	 * An extra entry that cannot be modified by the DPDK is reserved
-	 * for broadcast frames (destination MAC address ff:ff:ff:ff:ff:ff).
-	 */
-	struct ether_addr mac[MLX4_MAX_MAC_ADDRESSES];
-	BITFIELD_DECLARE(mac_configured, uint32_t, MLX4_MAX_MAC_ADDRESSES);
-	/* VLAN filters. */
-	struct {
-		unsigned int enabled:1; /* If enabled. */
-		unsigned int id:12; /* VLAN ID (0-4095). */
-	} vlan_filter[MLX4_MAX_VLAN_IDS]; /* VLAN filters table. */
+	struct rte_eth_dev *dev; /**< Ethernet device. */
+	struct ibv_context *ctx; /**< Verbs context. */
+	struct ibv_device_attr device_attr; /**< Device properties. */
+	struct ibv_pd *pd; /**< Protection Domain. */
 	/* Device properties. */
-	uint16_t mtu; /* Configured MTU. */
-	uint8_t port; /* Physical port number. */
-	unsigned int started:1; /* Device started, flows enabled. */
-	unsigned int promisc:1; /* Device in promiscuous mode. */
-	unsigned int allmulti:1; /* Device receives all multicast packets. */
-	unsigned int hw_qpg:1; /* QP groups are supported. */
-	unsigned int hw_tss:1; /* TSS is supported. */
-	unsigned int hw_rss:1; /* RSS is supported. */
-	unsigned int hw_csum:1; /* Checksum offload is supported. */
-	unsigned int hw_csum_l2tun:1; /* Same for L2 tunnels. */
-	unsigned int rss:1; /* RSS is enabled. */
-	unsigned int vf:1; /* This is a VF device. */
-	unsigned int pending_alarm:1; /* An alarm is pending. */
-	unsigned int isolated:1; /* Toggle isolated mode. */
-#ifdef INLINE_RECV
-	unsigned int inl_recv_size; /* Inline recv size */
-#endif
-	unsigned int max_rss_tbl_sz; /* Maximum number of RSS queues. */
-	/* RX/TX queues. */
-	unsigned int rxqs_n; /* RX queues array size. */
-	unsigned int txqs_n; /* TX queues array size. */
-	struct rxq *(*rxqs)[]; /* RX queues. */
-	struct txq *(*txqs)[]; /* TX queues. */
-	struct rte_intr_handle intr_handle_dev; /* Device interrupt handler. */
-	struct rte_intr_handle intr_handle; /* Interrupt handler. */
-	struct rte_flow_drop *flow_drop_queue; /* Flow drop queue. */
-	LIST_HEAD(mlx4_flows, rte_flow) flows;
-	struct rte_intr_conf intr_conf; /* Active interrupt configuration. */
-	LIST_HEAD(mlx4_parents, rxq) parents;
-	rte_spinlock_t lock; /* Lock for control functions. */
+	uint16_t mtu; /**< Configured MTU. */
+	uint8_t port; /**< Physical port number. */
+	uint32_t started:1; /**< Device started, flows enabled. */
+	uint32_t vf:1; /**< This is a VF device. */
+	uint32_t intr_alarm:1; /**< An interrupt alarm is scheduled. */
+	uint32_t isolated:1; /**< Toggle isolated mode. */
+	uint32_t hw_csum:1; /* Checksum offload is supported. */
+	uint32_t hw_csum_l2tun:1; /* Checksum support for L2 tunnels. */
+	struct rte_intr_handle intr_handle; /**< Port interrupt handle. */
+	struct mlx4_drop *drop; /**< Shared resources for drop flow rules. */
+	LIST_HEAD(, mlx4_rss) rss; /**< Shared targets for Rx flow rules. */
+	LIST_HEAD(, rte_flow) flows; /**< Configured flow rule handles. */
+	LIST_HEAD(, mlx4_mr) mr; /**< Registered memory regions. */
+	rte_spinlock_t mr_lock; /**< Lock for @p mr access. */
+	struct ether_addr mac[MLX4_MAX_MAC_ADDRESSES];
+	/**< Configured MAC addresses. Unused entries are zeroed. */
 };
 
-void priv_lock(struct priv *priv);
-void priv_unlock(struct priv *priv);
-
-int
-rxq_create_qp(struct rxq *rxq,
-	      uint16_t desc,
-	      int inactive,
-	      int children_n,
-	      struct rxq *rxq_parent);
-
-void
-rxq_parent_cleanup(struct rxq *parent);
-
-struct rxq *
-priv_parent_create(struct priv *priv,
-		   uint16_t queues[],
-		   uint16_t children_n);
+/* mlx4_ethdev.c */
+
+int mlx4_get_ifname(const struct priv *priv, char (*ifname)[IF_NAMESIZE]);
+int mlx4_get_mac(struct priv *priv, uint8_t (*mac)[ETHER_ADDR_LEN]);
+int mlx4_mtu_get(struct priv *priv, uint16_t *mtu);
+int mlx4_mtu_set(struct rte_eth_dev *dev, uint16_t mtu);
+int mlx4_dev_set_link_down(struct rte_eth_dev *dev);
+int mlx4_dev_set_link_up(struct rte_eth_dev *dev);
+void mlx4_promiscuous_enable(struct rte_eth_dev *dev);
+void mlx4_promiscuous_disable(struct rte_eth_dev *dev);
+void mlx4_allmulticast_enable(struct rte_eth_dev *dev);
+void mlx4_allmulticast_disable(struct rte_eth_dev *dev);
+void mlx4_mac_addr_remove(struct rte_eth_dev *dev, uint32_t index);
+int mlx4_mac_addr_add(struct rte_eth_dev *dev, struct ether_addr *mac_addr,
+		      uint32_t index, uint32_t vmdq);
+void mlx4_mac_addr_set(struct rte_eth_dev *dev, struct ether_addr *mac_addr);
+int mlx4_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on);
+int mlx4_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats);
+void mlx4_stats_reset(struct rte_eth_dev *dev);
+void mlx4_dev_infos_get(struct rte_eth_dev *dev,
+			struct rte_eth_dev_info *info);
+int mlx4_link_update(struct rte_eth_dev *dev, int wait_to_complete);
+int mlx4_flow_ctrl_get(struct rte_eth_dev *dev,
+		       struct rte_eth_fc_conf *fc_conf);
+int mlx4_flow_ctrl_set(struct rte_eth_dev *dev,
+		       struct rte_eth_fc_conf *fc_conf);
+const uint32_t *mlx4_dev_supported_ptypes_get(struct rte_eth_dev *dev);
+
+/* mlx4_intr.c */
+
+int mlx4_intr_uninstall(struct priv *priv);
+int mlx4_intr_install(struct priv *priv);
+int mlx4_rx_intr_disable(struct rte_eth_dev *dev, uint16_t idx);
+int mlx4_rx_intr_enable(struct rte_eth_dev *dev, uint16_t idx);
+
+/* mlx4_mr.c */
+
+struct mlx4_mr *mlx4_mr_get(struct priv *priv, struct rte_mempool *mp);
+void mlx4_mr_put(struct mlx4_mr *mr);
+uint32_t mlx4_txq_add_mr(struct txq *txq, struct rte_mempool *mp,
+			 uint32_t i);
 
 #endif /* RTE_PMD_MLX4_H_ */