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FIP VLAN discovery discovers the FCoE VLAN that will be used by all other FIP protocols as well as by the FCoE encapsulation for Fibre Channel payloads on the established virtual link. One of the goals of FC-BB-5 was to be as nonintrusive as possible on initiators and targets, and therefore FIP VLAN discovery occurs in the native VLAN used by the initiator or target to exchange Ethernet traffic. The FIP VLAN discovery protocol is the only FIP protocol running on the native VLAN; all other FIP protocols run on the discovered FCoE VLANs. If an administrator has manually configured FCoE VLANs on ENodes and FCFs, there is no need to use this protocol. FIP and FCoE will run over the configured VLANs. An ENode without FCoE VLANs configuration would use this automated discovery protocol to discover over which VLANs FCoE is running. The ENode sends a FIP VLAN discovery request to a multicast MAC address called All-FCF-MACs, which is a multicast MAC address to which all FCFs listen. All FCFs that can be reached in the native VLAN of the ENode are expected to respond on the same VLAN with a response that lists one or more FCoE VLANs that are available for the ENode's VN_Port login. This protocol has the sole purpose of allowing the ENode to discover all the available FCoE VLANs. Now the ENode may enable a subset of these VLANs for FCoE Running the FIP protocol in these VLANs on a per VLAN basis. And FCoE data transactions also would occur on this VLAN. Hence, Except for FIP VLAN discovery, all other FIP and FCoE traffic runs on the selected FCoE VLAN. Its only the FIP VLAN Discovery protocol that is permitted to run on the Default native VLAN of the system. [**** NOTE ****] We are working on moving this feature definitions and functionality to libfcoe module. We need this patch to be approved, as Suse is looking forward to merge this feature in SLES 11 SP3 release. Once this patch is approved, we will submit patch which should move vlan discovery feature to libfoce. [Fengguang Wu <fengguang.wu@intel.com>: kmalloc cast removal] Signed-off-by: Anantha Prakash T <atungara@cisco.com> Signed-off-by: Hiral Patel <hiralpat@cisco.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
164 lines
6.1 KiB
C
164 lines
6.1 KiB
C
/*
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* Copyright 2008 Cisco Systems, Inc. All rights reserved.
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* Copyright 2007 Nuova Systems, Inc. All rights reserved.
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*
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* This program is free software; you may redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef _VNIC_DEV_H_
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#define _VNIC_DEV_H_
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#include "vnic_resource.h"
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#include "vnic_devcmd.h"
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/*
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* These defines avoid symbol clash between fnic and enic (Cisco 10G Eth
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* Driver) when both are built with CONFIG options =y
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*/
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#define vnic_dev_priv fnic_dev_priv
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#define vnic_dev_get_res_count fnic_dev_get_res_count
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#define vnic_dev_get_res fnic_dev_get_res
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#define vnic_dev_desc_ring_size fnic_dev_desc_ring_siz
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#define vnic_dev_clear_desc_ring fnic_dev_clear_desc_ring
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#define vnic_dev_alloc_desc_ring fnic_dev_alloc_desc_ring
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#define vnic_dev_free_desc_ring fnic_dev_free_desc_ring
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#define vnic_dev_cmd fnic_dev_cmd
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#define vnic_dev_fw_info fnic_dev_fw_info
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#define vnic_dev_spec fnic_dev_spec
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#define vnic_dev_stats_clear fnic_dev_stats_clear
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#define vnic_dev_stats_dump fnic_dev_stats_dump
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#define vnic_dev_hang_notify fnic_dev_hang_notify
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#define vnic_dev_packet_filter fnic_dev_packet_filter
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#define vnic_dev_add_addr fnic_dev_add_addr
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#define vnic_dev_del_addr fnic_dev_del_addr
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#define vnic_dev_mac_addr fnic_dev_mac_addr
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#define vnic_dev_notify_set fnic_dev_notify_set
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#define vnic_dev_notify_unset fnic_dev_notify_unset
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#define vnic_dev_link_status fnic_dev_link_status
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#define vnic_dev_port_speed fnic_dev_port_speed
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#define vnic_dev_msg_lvl fnic_dev_msg_lvl
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#define vnic_dev_mtu fnic_dev_mtu
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#define vnic_dev_link_down_cnt fnic_dev_link_down_cnt
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#define vnic_dev_close fnic_dev_close
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#define vnic_dev_enable fnic_dev_enable
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#define vnic_dev_disable fnic_dev_disable
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#define vnic_dev_open fnic_dev_open
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#define vnic_dev_open_done fnic_dev_open_done
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#define vnic_dev_init fnic_dev_init
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#define vnic_dev_soft_reset fnic_dev_soft_reset
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#define vnic_dev_soft_reset_done fnic_dev_soft_reset_done
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#define vnic_dev_set_intr_mode fnic_dev_set_intr_mode
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#define vnic_dev_get_intr_mode fnic_dev_get_intr_mode
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#define vnic_dev_unregister fnic_dev_unregister
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#define vnic_dev_register fnic_dev_register
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#ifndef VNIC_PADDR_TARGET
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#define VNIC_PADDR_TARGET 0x0000000000000000ULL
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#endif
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#ifndef readq
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static inline u64 readq(void __iomem *reg)
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{
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return ((u64)readl(reg + 0x4UL) << 32) | (u64)readl(reg);
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}
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static inline void writeq(u64 val, void __iomem *reg)
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{
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writel(val & 0xffffffff, reg);
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writel(val >> 32, reg + 0x4UL);
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}
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#endif
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enum vnic_dev_intr_mode {
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VNIC_DEV_INTR_MODE_UNKNOWN,
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VNIC_DEV_INTR_MODE_INTX,
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VNIC_DEV_INTR_MODE_MSI,
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VNIC_DEV_INTR_MODE_MSIX,
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};
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struct vnic_dev_bar {
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void __iomem *vaddr;
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dma_addr_t bus_addr;
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unsigned long len;
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};
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struct vnic_dev_ring {
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void *descs;
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size_t size;
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dma_addr_t base_addr;
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size_t base_align;
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void *descs_unaligned;
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size_t size_unaligned;
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dma_addr_t base_addr_unaligned;
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unsigned int desc_size;
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unsigned int desc_count;
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unsigned int desc_avail;
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};
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struct vnic_dev;
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struct vnic_stats;
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void *vnic_dev_priv(struct vnic_dev *vdev);
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unsigned int vnic_dev_get_res_count(struct vnic_dev *vdev,
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enum vnic_res_type type);
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void __iomem *vnic_dev_get_res(struct vnic_dev *vdev, enum vnic_res_type type,
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unsigned int index);
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unsigned int vnic_dev_desc_ring_size(struct vnic_dev_ring *ring,
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unsigned int desc_count,
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unsigned int desc_size);
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void vnic_dev_clear_desc_ring(struct vnic_dev_ring *ring);
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int vnic_dev_alloc_desc_ring(struct vnic_dev *vdev, struct vnic_dev_ring *ring,
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unsigned int desc_count, unsigned int desc_size);
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void vnic_dev_free_desc_ring(struct vnic_dev *vdev,
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struct vnic_dev_ring *ring);
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int vnic_dev_cmd(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd,
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u64 *a0, u64 *a1, int wait);
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int vnic_dev_fw_info(struct vnic_dev *vdev,
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struct vnic_devcmd_fw_info **fw_info);
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int vnic_dev_spec(struct vnic_dev *vdev, unsigned int offset,
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unsigned int size, void *value);
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int vnic_dev_stats_clear(struct vnic_dev *vdev);
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int vnic_dev_stats_dump(struct vnic_dev *vdev, struct vnic_stats **stats);
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int vnic_dev_hang_notify(struct vnic_dev *vdev);
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void vnic_dev_packet_filter(struct vnic_dev *vdev, int directed, int multicast,
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int broadcast, int promisc, int allmulti);
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void vnic_dev_add_addr(struct vnic_dev *vdev, u8 *addr);
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void vnic_dev_del_addr(struct vnic_dev *vdev, u8 *addr);
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int vnic_dev_mac_addr(struct vnic_dev *vdev, u8 *mac_addr);
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int vnic_dev_notify_set(struct vnic_dev *vdev, u16 intr);
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void vnic_dev_notify_unset(struct vnic_dev *vdev);
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int vnic_dev_link_status(struct vnic_dev *vdev);
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u32 vnic_dev_port_speed(struct vnic_dev *vdev);
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u32 vnic_dev_msg_lvl(struct vnic_dev *vdev);
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u32 vnic_dev_mtu(struct vnic_dev *vdev);
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u32 vnic_dev_link_down_cnt(struct vnic_dev *vdev);
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int vnic_dev_close(struct vnic_dev *vdev);
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int vnic_dev_enable(struct vnic_dev *vdev);
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int vnic_dev_disable(struct vnic_dev *vdev);
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int vnic_dev_open(struct vnic_dev *vdev, int arg);
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int vnic_dev_open_done(struct vnic_dev *vdev, int *done);
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int vnic_dev_init(struct vnic_dev *vdev, int arg);
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u16 vnic_dev_set_default_vlan(struct vnic_dev *vdev,
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u16 new_default_vlan);
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int vnic_dev_soft_reset(struct vnic_dev *vdev, int arg);
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int vnic_dev_soft_reset_done(struct vnic_dev *vdev, int *done);
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void vnic_dev_set_intr_mode(struct vnic_dev *vdev,
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enum vnic_dev_intr_mode intr_mode);
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enum vnic_dev_intr_mode vnic_dev_get_intr_mode(struct vnic_dev *vdev);
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void vnic_dev_unregister(struct vnic_dev *vdev);
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struct vnic_dev *vnic_dev_register(struct vnic_dev *vdev,
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void *priv, struct pci_dev *pdev,
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struct vnic_dev_bar *bar);
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#endif /* _VNIC_DEV_H_ */
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