| /* |
| * |
| * Copyright (c) 2009, Microsoft Corporation. |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms and conditions of the GNU General Public License, |
| * version 2, as published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| * more details. |
| * |
| * You should have received a copy of the GNU General Public License along with |
| * this program; if not, write to the Free Software Foundation, Inc., 59 Temple |
| * Place - Suite 330, Boston, MA 02111-1307 USA. |
| * |
| * Authors: |
| * Haiyang Zhang <haiyangz@microsoft.com> |
| * Hank Janssen <hjanssen@microsoft.com> |
| * |
| */ |
| |
| |
| #ifndef _NETVSC_API_H_ |
| #define _NETVSC_API_H_ |
| |
| #include "vmbus_api.h" |
| #include "vmbus.h" |
| |
| /* Fwd declaration */ |
| struct hv_netvsc_packet; |
| |
| /* Represent the xfer page packet which contains 1 or more netvsc packet */ |
| struct xferpage_packet { |
| struct list_head list_ent; |
| |
| /* # of netvsc packets this xfer packet contains */ |
| u32 count; |
| }; |
| |
| /* The number of pages which are enough to cover jumbo frame buffer. */ |
| #define NETVSC_PACKET_MAXPAGE 4 |
| |
| /* |
| * Represent netvsc packet which contains 1 RNDIS and 1 ethernet frame |
| * within the RNDIS |
| */ |
| struct hv_netvsc_packet { |
| /* Bookkeeping stuff */ |
| struct list_head list_ent; |
| |
| struct hv_device *device; |
| bool is_data_pkt; |
| |
| /* |
| * Valid only for receives when we break a xfer page packet |
| * into multiple netvsc packets |
| */ |
| struct xferpage_packet *xfer_page_pkt; |
| |
| union { |
| struct{ |
| u64 recv_completion_tid; |
| void *recv_completion_ctx; |
| void (*recv_completion)(void *context); |
| } recv; |
| struct{ |
| u64 send_completion_tid; |
| void *send_completion_ctx; |
| void (*send_completion)(void *context); |
| } send; |
| } completion; |
| |
| /* This points to the memory after page_buf */ |
| void *extension; |
| |
| u32 total_data_buflen; |
| /* Points to the send/receive buffer where the ethernet frame is */ |
| u32 page_buf_cnt; |
| struct hv_page_buffer page_buf[NETVSC_PACKET_MAXPAGE]; |
| }; |
| |
| /* Represents the net vsc driver */ |
| struct netvsc_driver { |
| /* Must be the first field */ |
| /* Which is a bug FIXME! */ |
| struct hv_driver base; |
| |
| u32 ring_buf_size; |
| u32 req_ext_size; |
| |
| /* |
| * This is set by the caller to allow us to callback when we |
| * receive a packet from the "wire" |
| */ |
| int (*recv_cb)(struct hv_device *dev, |
| struct hv_netvsc_packet *packet); |
| void (*link_status_change)(struct hv_device *dev, u32 status); |
| |
| /* Specific to this driver */ |
| int (*send)(struct hv_device *dev, struct hv_netvsc_packet *packet); |
| |
| void *ctx; |
| }; |
| |
| static inline |
| struct netvsc_driver *drv_to_netvscdrv(struct device_driver *d) |
| { |
| struct hv_driver *hvdrv = drv_to_hv_drv(d); |
| return container_of(hvdrv, struct netvsc_driver, base); |
| } |
| |
| struct netvsc_device_info { |
| unsigned char mac_adr[6]; |
| bool link_state; /* 0 - link up, 1 - link down */ |
| }; |
| |
| /* Interface */ |
| int netvsc_device_add(struct hv_device *device, void *additional_info); |
| int netvsc_device_remove(struct hv_device *device); |
| int netvsc_initialize(struct hv_driver *drv); |
| int rndis_filter_open(struct hv_device *dev); |
| int rndis_filter_close(struct hv_device *dev); |
| int rndis_filte_device_add(struct hv_device *dev, |
| void *additional_info); |
| int rndis_filter_device_remove(struct hv_device *dev); |
| |
| |
| #endif /* _NETVSC_API_H_ */ |