1 /* 2 * Copyright (c) 2013, Cisco Systems, Inc. All rights reserved. 3 * 4 * This program is free software; you may redistribute it and/or modify 5 * it under the terms of the GNU General Public License as published by 6 * the Free Software Foundation; version 2 of the License. 7 * 8 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 9 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 10 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 11 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 12 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 13 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 14 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 15 * SOFTWARE. 16 * 17 */ 18 19 #ifndef USNIC_FWD_H_ 20 #define USNIC_FWD_H_ 21 22 #include <linux/if.h> 23 #include <linux/netdevice.h> 24 #include <linux/pci.h> 25 #include <linux/in.h> 26 27 #include "usnic_abi.h" 28 #include "usnic_common_pkt_hdr.h" 29 #include "vnic_devcmd.h" 30 31 struct usnic_fwd_dev { 32 struct pci_dev *pdev; 33 struct net_device *netdev; 34 spinlock_t lock; 35 /* 36 * The following fields can be read directly off the device. 37 * However, they should be set by a accessor function, except name, 38 * which cannot be changed. 39 */ 40 bool link_up; 41 char mac[ETH_ALEN]; 42 unsigned int mtu; 43 char name[IFNAMSIZ+1]; 44 }; 45 46 struct usnic_fwd_flow { 47 uint32_t flow_id; 48 struct usnic_fwd_dev *ufdev; 49 unsigned int vnic_idx; 50 }; 51 52 struct usnic_filter_action { 53 int vnic_idx; 54 struct filter_action action; 55 }; 56 57 struct usnic_fwd_dev *usnic_fwd_dev_alloc(struct pci_dev *pdev); 58 void usnic_fwd_dev_free(struct usnic_fwd_dev *ufdev); 59 60 void usnic_fwd_set_mac(struct usnic_fwd_dev *ufdev, char mac[ETH_ALEN]); 61 void usnic_fwd_carrier_up(struct usnic_fwd_dev *ufdev); 62 void usnic_fwd_carrier_down(struct usnic_fwd_dev *ufdev); 63 void usnic_fwd_set_mtu(struct usnic_fwd_dev *ufdev, unsigned int mtu); 64 65 /* 66 * Allocate a flow on this forwarding device. Whoever calls this function, 67 * must monitor netdev events on ufdev's netdevice. If NETDEV_REBOOT or 68 * NETDEV_DOWN is seen, flow will no longer function and must be 69 * immediately freed by calling usnic_dealloc_flow. 70 */ 71 struct usnic_fwd_flow* 72 usnic_fwd_alloc_flow(struct usnic_fwd_dev *ufdev, struct filter *filter, 73 struct usnic_filter_action *action); 74 int usnic_fwd_dealloc_flow(struct usnic_fwd_flow *flow); 75 int usnic_fwd_enable_qp(struct usnic_fwd_dev *ufdev, int vnic_idx, int qp_idx); 76 int usnic_fwd_disable_qp(struct usnic_fwd_dev *ufdev, int vnic_idx, int qp_idx); 77 78 static inline void usnic_fwd_init_usnic_filter(struct filter *filter, 79 uint32_t usnic_id) 80 { 81 filter->type = FILTER_USNIC_ID; 82 filter->u.usnic.ethtype = USNIC_ROCE_ETHERTYPE; 83 filter->u.usnic.flags = FILTER_FIELD_USNIC_ETHTYPE | 84 FILTER_FIELD_USNIC_ID | 85 FILTER_FIELD_USNIC_PROTO; 86 filter->u.usnic.proto_version = (USNIC_ROCE_GRH_VER << 87 USNIC_ROCE_GRH_VER_SHIFT) | 88 USNIC_PROTO_VER; 89 filter->u.usnic.usnic_id = usnic_id; 90 } 91 92 #endif /* !USNIC_FWD_H_ */ 93