ceph/src/seastar/dpdk/lib/librte_eal/linuxapp/kni/kni_dev.h

   1 /*-
   2  * GPL LICENSE SUMMARY
   3  *
   4  *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
   5  *
   6  *   This program is free software; you can redistribute it and/or modify
   7  *   it under the terms of version 2 of the GNU General Public License as
   8  *   published by the Free Software Foundation.
   9  *
  10  *   This program is distributed in the hope that it will be useful, but
  11  *   WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  *   General Public License for more details.
  14  *
  15  *   You should have received a copy of the GNU General Public License
  16  *   along with this program; if not, write to the Free Software
  17  *   Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
  18  *   The full GNU General Public License is included in this distribution
  19  *   in the file called LICENSE.GPL.
  20  *
  21  *   Contact Information:
  22  *   Intel Corporation
  23  */
  24
  25 #ifndef _KNI_DEV_H_
  26 #define _KNI_DEV_H_
  27
  28 #ifdef pr_fmt
  29 #undef pr_fmt
  30 #endif
  31 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  32
  33 #include "compat.h"
  34
  35 #include <linux/if.h>
  36 #include <linux/wait.h>
  37 #ifdef HAVE_SIGNAL_FUNCTIONS_OWN_HEADER
  38 #include <linux/sched/signal.h>
  39 #else
  40 #include <linux/sched.h>
  41 #endif
  42 #include <linux/netdevice.h>
  43 #include <linux/spinlock.h>
  44 #include <linux/list.h>
  45
  46 #include <exec-env/rte_kni_common.h>
  47 #define KNI_KTHREAD_RESCHEDULE_INTERVAL 5 /* us */
  48
  49 #define MBUF_BURST_SZ 32
  50
  51 /**
  52  * A structure describing the private information for a kni device.
  53  */
  54 struct kni_dev {
  55         /* kni list */
  56         struct list_head list;
  57
  58         struct net_device_stats stats;
  59         int status;
  60         uint16_t group_id;           /* Group ID of a group of KNI devices */
  61         uint32_t core_id;            /* Core ID to bind */
  62         char name[RTE_KNI_NAMESIZE]; /* Network device name */
  63         struct task_struct *pthread;
  64
  65         /* wait queue for req/resp */
  66         wait_queue_head_t wq;
  67         struct mutex sync_lock;
  68
  69         /* PCI device id */
  70         uint16_t device_id;
  71
  72         /* kni device */
  73         struct net_device *net_dev;
  74         struct net_device *lad_dev;
  75         struct pci_dev *pci_dev;
  76
  77         /* queue for packets to be sent out */
  78         void *tx_q;
  79
  80         /* queue for the packets received */
  81         void *rx_q;
  82
  83         /* queue for the allocated mbufs those can be used to save sk buffs */
  84         void *alloc_q;
  85
  86         /* free queue for the mbufs to be freed */
  87         void *free_q;
  88
  89         /* request queue */
  90         void *req_q;
  91
  92         /* response queue */
  93         void *resp_q;
  94
  95         void *sync_kva;
  96         void *sync_va;
  97
  98         void *mbuf_kva;
  99         void *mbuf_va;
 100
 101         /* mbuf size */
 102         uint32_t mbuf_size;
 103
 104         /* synchro for request processing */
 105         unsigned long synchro;
 106
 107         /* buffers */
 108         void *pa[MBUF_BURST_SZ];
 109         void *va[MBUF_BURST_SZ];
 110         void *alloc_pa[MBUF_BURST_SZ];
 111         void *alloc_va[MBUF_BURST_SZ];
 112 };
 113
 114 void kni_net_rx(struct kni_dev *kni);
 115 void kni_net_init(struct net_device *dev);
 116 void kni_net_config_lo_mode(char *lo_str);
 117 void kni_net_poll_resp(struct kni_dev *kni);
 118 void kni_set_ethtool_ops(struct net_device *netdev);
 119
 120 int ixgbe_kni_probe(struct pci_dev *pdev, struct net_device **lad_dev);
 121 void ixgbe_kni_remove(struct pci_dev *pdev);
 122 int igb_kni_probe(struct pci_dev *pdev, struct net_device **lad_dev);
 123 void igb_kni_remove(struct pci_dev *pdev);
 124
 125 #endif