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 __be32 inaddr; 44 char name[IFNAMSIZ+1]; 45 }; 46 47 struct usnic_fwd_flow { 48 uint32_t flow_id; 49 struct usnic_fwd_dev *ufdev; 50 unsigned int vnic_idx; 51 }; 52 53 struct usnic_filter_action { 54 int vnic_idx; 55 struct filter_action action; 56 }; 57 58 struct usnic_fwd_dev *usnic_fwd_dev_alloc(struct pci_dev *pdev); 59 void usnic_fwd_dev_free(struct usnic_fwd_dev *ufdev); 60 61 void usnic_fwd_set_mac(struct usnic_fwd_dev *ufdev, char mac[ETH_ALEN]); 62 int usnic_fwd_add_ipaddr(struct usnic_fwd_dev *ufdev, __be32 inaddr); 63 void usnic_fwd_del_ipaddr(struct usnic_fwd_dev *ufdev); 64 void usnic_fwd_carrier_up(struct usnic_fwd_dev *ufdev); 65 void usnic_fwd_carrier_down(struct usnic_fwd_dev *ufdev); 66 void usnic_fwd_set_mtu(struct usnic_fwd_dev *ufdev, unsigned int mtu); 67 68 /* 69 * Allocate a flow on this forwarding device. Whoever calls this function, 70 * must monitor netdev events on ufdev's netdevice. If NETDEV_REBOOT or 71 * NETDEV_DOWN is seen, flow will no longer function and must be 72 * immediately freed by calling usnic_dealloc_flow. 73 */ 74 struct usnic_fwd_flow* 75 usnic_fwd_alloc_flow(struct usnic_fwd_dev *ufdev, struct filter *filter, 76 struct usnic_filter_action *action); 77 int usnic_fwd_dealloc_flow(struct usnic_fwd_flow *flow); 78 int usnic_fwd_enable_qp(struct usnic_fwd_dev *ufdev, int vnic_idx, int qp_idx); 79 int usnic_fwd_disable_qp(struct usnic_fwd_dev *ufdev, int vnic_idx, int qp_idx); 80 81 static inline void usnic_fwd_init_usnic_filter(struct filter *filter, 82 uint32_t usnic_id) 83 { 84 filter->type = FILTER_USNIC_ID; 85 filter->u.usnic.ethtype = USNIC_ROCE_ETHERTYPE; 86 filter->u.usnic.flags = FILTER_FIELD_USNIC_ETHTYPE | 87 FILTER_FIELD_USNIC_ID | 88 FILTER_FIELD_USNIC_PROTO; 89 filter->u.usnic.proto_version = (USNIC_ROCE_GRH_VER << 90 USNIC_ROCE_GRH_VER_SHIFT) | 91 USNIC_PROTO_VER; 92 filter->u.usnic.usnic_id = usnic_id; 93 } 94 95 static inline void usnic_fwd_init_udp_filter(struct filter *filter, 96 uint32_t daddr, uint16_t dport) 97 { 98 filter->type = FILTER_IPV4_5TUPLE; 99 filter->u.ipv4.flags = FILTER_FIELD_5TUP_PROTO; 100 filter->u.ipv4.protocol = PROTO_UDP; 101 102 if (daddr) { 103 filter->u.ipv4.flags |= FILTER_FIELD_5TUP_DST_AD; 104 filter->u.ipv4.dst_addr = daddr; 105 } 106 107 if (dport) { 108 filter->u.ipv4.flags |= FILTER_FIELD_5TUP_DST_PT; 109 filter->u.ipv4.dst_port = dport; 110 } 111 } 112 113 #endif /* !USNIC_FWD_H_ */ 114