Re: [PATCH v3 1/2] net/mlx4: split the definitions to the header file

["Nélio Laranjeiro" <nelio.laranjeiro@6wind.com>]

On Sun, Mar 05, 2017 at 09:51:31AM +0200, Vasily Philipov wrote:
> Make priv_lock/priv_unlock functions and some other structs/defines visible
> from different source files by placing them into mlx4.h header.
> 
> Signed-off-by: Vasily Philipov <vasilyf@mellanox.com>
> ---
>  drivers/net/mlx4/mlx4.c | 193 +-----------------------------------------------
>  drivers/net/mlx4/mlx4.h | 187 +++++++++++++++++++++++++++++++++++++++++++++-
>  2 files changed, 189 insertions(+), 191 deletions(-)
> 
> diff --git a/drivers/net/mlx4/mlx4.c b/drivers/net/mlx4/mlx4.c
> index 79efaaa..8f6c57f 100644
> --- a/drivers/net/mlx4/mlx4.c
> +++ b/drivers/net/mlx4/mlx4.c
> @@ -1,8 +1,8 @@
>  /*-
>   *   BSD LICENSE
>   *
> - *   Copyright 2012-2015 6WIND S.A.
> - *   Copyright 2012 Mellanox.
> + *   Copyright 2012-2017 6WIND S.A.
> + *   Copyright 2012-2017 Mellanox.
>   *
>   *   Redistribution and use in source and binary forms, with or without
>   *   modification, are permitted provided that the following conditions
> @@ -58,20 +58,6 @@
>  #include <linux/sockios.h>
>  #include <fcntl.h>
>  
> -/* Verbs header. */
> -/* ISO C doesn't support unnamed structs/unions, disabling -pedantic. */
> -#ifdef PEDANTIC
> -#pragma GCC diagnostic ignored "-Wpedantic"
> -#endif
> -#include <infiniband/verbs.h>
> -#ifdef PEDANTIC
> -#pragma GCC diagnostic error "-Wpedantic"
> -#endif
> -
> -/* DPDK headers don't like -pedantic. */
> -#ifdef PEDANTIC
> -#pragma GCC diagnostic ignored "-Wpedantic"
> -#endif
>  #include <rte_ether.h>
>  #include <rte_ethdev.h>
>  #include <rte_dev.h>
> @@ -86,9 +72,6 @@
>  #include <rte_log.h>
>  #include <rte_alarm.h>
>  #include <rte_memory.h>
> -#ifdef PEDANTIC
> -#pragma GCC diagnostic error "-Wpedantic"
> -#endif
>  
>  /* Generated configuration header. */
>  #include "mlx4_autoconf.h"
> @@ -96,21 +79,6 @@
>  /* PMD header. */
>  #include "mlx4.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
> -
>  /* Convenience macros for accessing mbuf fields. */
>  #define NEXT(m) ((m)->next)
>  #define DATA_LEN(m) ((m)->data_len)
> @@ -137,157 +105,6 @@
>  	 (((val) & (from)) / ((from) / (to))) : \
>  	 (((val) & (from)) * ((to) / (from))))
>  
> -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. */
> -};
> -
> -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. */
> -};
> -
> -/* 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 {
> -	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. */
> -	/*
> -	 * 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. */
> -};
> -
> -/* TX element. */
> -struct txq_elt {
> -	struct rte_mbuf *buf;
> -};
> -
> -/* 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];
> -
> -/* 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. */
> -};
> -
> -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. */
> -	/* 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. */
> -#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. */
> -	struct rxq rxq_parent; /* Parent queue when RSS is enabled. */
> -	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; /* Interrupt handler. */
> -	rte_spinlock_t lock; /* Lock for control functions. */
> -};
> -
>  /* Local storage for secondary process data. */
>  struct mlx4_secondary_data {
>  	struct rte_eth_dev_data data; /* Local device data. */
> @@ -335,8 +152,7 @@ struct mlx4_secondary_data {
>   * @param priv
>   *   Pointer to private structure.
>   */
> -static void
> -priv_lock(struct priv *priv)
> +void priv_lock(struct priv *priv)
>  {
>  	rte_spinlock_lock(&priv->lock);
>  }
> @@ -347,8 +163,7 @@ struct mlx4_secondary_data {
>   * @param priv
>   *   Pointer to private structure.
>   */
> -static void
> -priv_unlock(struct priv *priv)
> +void priv_unlock(struct priv *priv)
>  {
>  	rte_spinlock_unlock(&priv->lock);
>  }
> diff --git a/drivers/net/mlx4/mlx4.h b/drivers/net/mlx4/mlx4.h
> index 4c7505e..70c9ecd 100644
> --- a/drivers/net/mlx4/mlx4.h
> +++ b/drivers/net/mlx4/mlx4.h
> @@ -1,8 +1,8 @@
>  /*-
>   *   BSD LICENSE
>   *
> - *   Copyright 2012-2015 6WIND S.A.
> - *   Copyright 2012 Mellanox.
> + *   Copyright 2012-2017 6WIND S.A.
> + *   Copyright 2012-2017 Mellanox.
>   *
>   *   Redistribution and use in source and binary forms, with or without
>   *   modification, are permitted provided that the following conditions
> @@ -39,6 +39,33 @@
>  #include <limits.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. */
> +#ifdef PEDANTIC
> +#pragma GCC diagnostic ignored "-Wpedantic"
> +#endif
> +#include <infiniband/verbs.h>
> +#ifdef PEDANTIC
> +#pragma GCC diagnostic error "-Wpedantic"
> +#endif
> +
> +/*
>   * Maximum number of simultaneous MAC addresses supported.
>   *
>   * According to ConnectX's Programmer Reference Manual:
> @@ -160,4 +187,160 @@ enum {
>  #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 {
> +	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. */
> +	/*
> +	 * 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. */
> +};
> +
> +/* 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];
> +
> +/* 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. */
> +};
> +
> +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. */
> +	/* 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. */
> +#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. */
> +	struct rxq rxq_parent; /* Parent queue when RSS is enabled. */
> +	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; /* Interrupt handler. */
> +	rte_spinlock_t lock; /* Lock for control functions. */
> +};
> +
> +void priv_lock(struct priv *priv);
> +void priv_unlock(struct priv *priv);
> +
>  #endif /* RTE_PMD_MLX4_H_ */
> -- 
> 1.8.3.1
> 

Acked-by: Nelio Laranjeiro <nelio.laranjeiro@6wind.com>

-- 
Nélio Laranjeiro
6WIND