| /* |
| * Copyright (c) 2013, Cisco Systems, Inc. All rights reserved. |
| * |
| * This software is available to you under a choice of one of two |
| * licenses. You may choose to be licensed under the terms of the GNU |
| * General Public License (GPL) Version 2, available from the file |
| * COPYING in the main directory of this source tree, or the |
| * BSD license below: |
| * |
| * Redistribution and use in source and binary forms, with or |
| * without modification, are permitted provided that the following |
| * conditions are met: |
| * |
| * - Redistributions of source code must retain the above |
| * copyright notice, this list of conditions and the following |
| * disclaimer. |
| * |
| * - Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following |
| * disclaimer in the documentation and/or other materials |
| * provided with the distribution. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
| * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
| * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| * SOFTWARE. |
| * |
| */ |
| |
| #ifndef USNIC_FWD_H_ |
| #define USNIC_FWD_H_ |
| |
| #include <linux/if.h> |
| #include <linux/netdevice.h> |
| #include <linux/if_ether.h> |
| #include <linux/pci.h> |
| #include <linux/in.h> |
| |
| #include "usnic_abi.h" |
| #include "usnic_common_pkt_hdr.h" |
| #include "vnic_devcmd.h" |
| |
| struct usnic_fwd_dev { |
| struct pci_dev *pdev; |
| struct net_device *netdev; |
| spinlock_t lock; |
| /* |
| * The following fields can be read directly off the device. |
| * However, they should be set by a accessor function, except name, |
| * which cannot be changed. |
| */ |
| bool link_up; |
| char mac[ETH_ALEN]; |
| unsigned int mtu; |
| __be32 inaddr; |
| char name[IFNAMSIZ+1]; |
| }; |
| |
| struct usnic_fwd_flow { |
| uint32_t flow_id; |
| struct usnic_fwd_dev *ufdev; |
| unsigned int vnic_idx; |
| }; |
| |
| struct usnic_filter_action { |
| int vnic_idx; |
| struct filter_action action; |
| }; |
| |
| struct usnic_fwd_dev *usnic_fwd_dev_alloc(struct pci_dev *pdev); |
| void usnic_fwd_dev_free(struct usnic_fwd_dev *ufdev); |
| |
| void usnic_fwd_set_mac(struct usnic_fwd_dev *ufdev, char mac[ETH_ALEN]); |
| int usnic_fwd_add_ipaddr(struct usnic_fwd_dev *ufdev, __be32 inaddr); |
| void usnic_fwd_del_ipaddr(struct usnic_fwd_dev *ufdev); |
| void usnic_fwd_carrier_up(struct usnic_fwd_dev *ufdev); |
| void usnic_fwd_carrier_down(struct usnic_fwd_dev *ufdev); |
| void usnic_fwd_set_mtu(struct usnic_fwd_dev *ufdev, unsigned int mtu); |
| |
| /* |
| * Allocate a flow on this forwarding device. Whoever calls this function, |
| * must monitor netdev events on ufdev's netdevice. If NETDEV_REBOOT or |
| * NETDEV_DOWN is seen, flow will no longer function and must be |
| * immediately freed by calling usnic_dealloc_flow. |
| */ |
| struct usnic_fwd_flow* |
| usnic_fwd_alloc_flow(struct usnic_fwd_dev *ufdev, struct filter *filter, |
| struct usnic_filter_action *action); |
| int usnic_fwd_dealloc_flow(struct usnic_fwd_flow *flow); |
| int usnic_fwd_enable_qp(struct usnic_fwd_dev *ufdev, int vnic_idx, int qp_idx); |
| int usnic_fwd_disable_qp(struct usnic_fwd_dev *ufdev, int vnic_idx, int qp_idx); |
| |
| static inline void usnic_fwd_init_usnic_filter(struct filter *filter, |
| uint32_t usnic_id) |
| { |
| filter->type = FILTER_USNIC_ID; |
| filter->u.usnic.ethtype = ETH_P_IBOE; |
| filter->u.usnic.flags = FILTER_FIELD_USNIC_ETHTYPE | |
| FILTER_FIELD_USNIC_ID | |
| FILTER_FIELD_USNIC_PROTO; |
| filter->u.usnic.proto_version = (USNIC_ROCE_GRH_VER << |
| USNIC_ROCE_GRH_VER_SHIFT) | |
| USNIC_PROTO_VER; |
| filter->u.usnic.usnic_id = usnic_id; |
| } |
| |
| static inline void usnic_fwd_init_udp_filter(struct filter *filter, |
| uint32_t daddr, uint16_t dport) |
| { |
| filter->type = FILTER_IPV4_5TUPLE; |
| filter->u.ipv4.flags = FILTER_FIELD_5TUP_PROTO; |
| filter->u.ipv4.protocol = PROTO_UDP; |
| |
| if (daddr) { |
| filter->u.ipv4.flags |= FILTER_FIELD_5TUP_DST_AD; |
| filter->u.ipv4.dst_addr = daddr; |
| } |
| |
| if (dport) { |
| filter->u.ipv4.flags |= FILTER_FIELD_5TUP_DST_PT; |
| filter->u.ipv4.dst_port = dport; |
| } |
| } |
| |
| #endif /* !USNIC_FWD_H_ */ |