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linux/drivers/scsi/fnic/fnic_res.h
Joe Eykholt 78112e5558 [SCSI] fnic: Add FIP support to the fnic driver 
Use libfcoe as a common FIP implementation with fcoe.
FIP or non-FIP mode is fully automatic if the firmware
supports and enables it.

Even if FIP is not supported, this uses libfcoe for the non-FIP
handling of FLOGI and its response.

Use the new lport_set_port_id() notification to capture
successful FLOGI responses and port_id resets.

While transitioning between Ethernet and FC mode, all rx and
tx FC frames are queued.  In Ethernet mode, all frames are
passed to the exchange manager to capture FLOGI responses.

Change to set data_src_addr to the ctl_src_addr whenever it
would have previously been zero because we're not logged in.
This seems safer so we'll never send a frame with a 0 source MAC.
This also eliminates a special case for sending FLOGI frames.

Signed-off-by: Joe Eykholt <jeykholt@cisco.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-12-04 12:01:19 -06:00

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/*
* Copyright 2008 Cisco Systems, Inc. All rights reserved.
* Copyright 2007 Nuova Systems, Inc. All rights reserved.
*
* This program is free software; you may redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* 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 _FNIC_RES_H_
#define _FNIC_RES_H_
#include "wq_enet_desc.h"
#include "rq_enet_desc.h"
#include "vnic_wq.h"
#include "vnic_rq.h"
#include "fnic_io.h"
#include "fcpio.h"
#include "vnic_wq_copy.h"
#include "vnic_cq_copy.h"
static inline void fnic_queue_wq_desc(struct vnic_wq *wq,
void *os_buf, dma_addr_t dma_addr,
unsigned int len, unsigned int fc_eof,
int vlan_tag_insert,
unsigned int vlan_tag,
int cq_entry, int sop, int eop)
{
struct wq_enet_desc *desc = vnic_wq_next_desc(wq);
wq_enet_desc_enc(desc,
(u64)dma_addr | VNIC_PADDR_TARGET,
(u16)len,
0, /* mss_or_csum_offset */
(u16)fc_eof,
0, /* offload_mode */
(u8)eop, (u8)cq_entry,
1, /* fcoe_encap */
(u8)vlan_tag_insert,
(u16)vlan_tag,
0 /* loopback */);
vnic_wq_post(wq, os_buf, dma_addr, len, sop, eop);
}
static inline void fnic_queue_wq_eth_desc(struct vnic_wq *wq,
void *os_buf, dma_addr_t dma_addr,
unsigned int len,
int vlan_tag_insert,
unsigned int vlan_tag,
int cq_entry)
{
struct wq_enet_desc *desc = vnic_wq_next_desc(wq);
wq_enet_desc_enc(desc,
(u64)dma_addr | VNIC_PADDR_TARGET,
(u16)len,
0, /* mss_or_csum_offset */
0, /* fc_eof */
0, /* offload_mode */
1, /* eop */
(u8)cq_entry,
0, /* fcoe_encap */
(u8)vlan_tag_insert,
(u16)vlan_tag,
0 /* loopback */);
vnic_wq_post(wq, os_buf, dma_addr, len, 1, 1);
}
static inline void fnic_queue_wq_copy_desc_icmnd_16(struct vnic_wq_copy *wq,
u32 req_id,
u32 lunmap_id, u8 spl_flags,
u32 sgl_cnt, u32 sense_len,
u64 sgl_addr, u64 sns_addr,
u8 crn, u8 pri_ta,
u8 flags, u8 *scsi_cdb,
u8 cdb_len,
u32 data_len, u8 *lun,
u32 d_id, u16 mss,
u32 ratov, u32 edtov)
{
struct fcpio_host_req *desc = vnic_wq_copy_next_desc(wq);
desc->hdr.type = FCPIO_ICMND_16; /* enum fcpio_type */
desc->hdr.status = 0; /* header status entry */
desc->hdr._resvd = 0; /* reserved */
desc->hdr.tag.u.req_id = req_id; /* id for this request */
desc->u.icmnd_16.lunmap_id = lunmap_id; /* index into lunmap table */
desc->u.icmnd_16.special_req_flags = spl_flags; /* exch req flags */
desc->u.icmnd_16._resvd0[0] = 0; /* reserved */
desc->u.icmnd_16._resvd0[1] = 0; /* reserved */
desc->u.icmnd_16._resvd0[2] = 0; /* reserved */
desc->u.icmnd_16.sgl_cnt = sgl_cnt; /* scatter-gather list count */
desc->u.icmnd_16.sense_len = sense_len; /* sense buffer length */
desc->u.icmnd_16.sgl_addr = sgl_addr; /* scatter-gather list addr */
desc->u.icmnd_16.sense_addr = sns_addr; /* sense buffer address */
desc->u.icmnd_16.crn = crn; /* SCSI Command Reference No.*/
desc->u.icmnd_16.pri_ta = pri_ta; /* SCSI Pri & Task attribute */
desc->u.icmnd_16._resvd1 = 0; /* reserved: should be 0 */
desc->u.icmnd_16.flags = flags; /* command flags */
memset(desc->u.icmnd_16.scsi_cdb, 0, CDB_16);
memcpy(desc->u.icmnd_16.scsi_cdb, scsi_cdb, cdb_len); /* SCSI CDB */
desc->u.icmnd_16.data_len = data_len; /* length of data expected */
memcpy(desc->u.icmnd_16.lun, lun, LUN_ADDRESS); /* LUN address */
desc->u.icmnd_16._resvd2 = 0; /* reserved */
hton24(desc->u.icmnd_16.d_id, d_id); /* FC vNIC only: Target D_ID */
desc->u.icmnd_16.mss = mss; /* FC vNIC only: max burst */
desc->u.icmnd_16.r_a_tov = ratov; /*FC vNIC only: Res. Alloc Timeout */
desc->u.icmnd_16.e_d_tov = edtov; /*FC vNIC only: Err Detect Timeout */
vnic_wq_copy_post(wq);
}
static inline void fnic_queue_wq_copy_desc_itmf(struct vnic_wq_copy *wq,
u32 req_id, u32 lunmap_id,
u32 tm_req, u32 tm_id, u8 *lun,
u32 d_id, u32 r_a_tov,
u32 e_d_tov)
{
struct fcpio_host_req *desc = vnic_wq_copy_next_desc(wq);
desc->hdr.type = FCPIO_ITMF; /* enum fcpio_type */
desc->hdr.status = 0; /* header status entry */
desc->hdr._resvd = 0; /* reserved */
desc->hdr.tag.u.req_id = req_id; /* id for this request */
desc->u.itmf.lunmap_id = lunmap_id; /* index into lunmap table */
desc->u.itmf.tm_req = tm_req; /* SCSI Task Management request */
desc->u.itmf.t_tag = tm_id; /* tag of fcpio to be aborted */
desc->u.itmf._resvd = 0;
memcpy(desc->u.itmf.lun, lun, LUN_ADDRESS); /* LUN address */
desc->u.itmf._resvd1 = 0;
hton24(desc->u.itmf.d_id, d_id); /* FC vNIC only: Target D_ID */
desc->u.itmf.r_a_tov = r_a_tov; /* FC vNIC only: R_A_TOV in msec */
desc->u.itmf.e_d_tov = e_d_tov; /* FC vNIC only: E_D_TOV in msec */
vnic_wq_copy_post(wq);
}
static inline void fnic_queue_wq_copy_desc_flogi_reg(struct vnic_wq_copy *wq,
u32 req_id, u8 format,
u32 s_id, u8 *gw_mac)
{
struct fcpio_host_req *desc = vnic_wq_copy_next_desc(wq);
desc->hdr.type = FCPIO_FLOGI_REG; /* enum fcpio_type */
desc->hdr.status = 0; /* header status entry */
desc->hdr._resvd = 0; /* reserved */
desc->hdr.tag.u.req_id = req_id; /* id for this request */
desc->u.flogi_reg.format = format;
desc->u.flogi_reg._resvd = 0;
hton24(desc->u.flogi_reg.s_id, s_id);
memcpy(desc->u.flogi_reg.gateway_mac, gw_mac, ETH_ALEN);
vnic_wq_copy_post(wq);
}
static inline void fnic_queue_wq_copy_desc_fip_reg(struct vnic_wq_copy *wq,
u32 req_id, u32 s_id,
u8 *fcf_mac, u8 *ha_mac,
u32 r_a_tov, u32 e_d_tov)
{
struct fcpio_host_req *desc = vnic_wq_copy_next_desc(wq);
desc->hdr.type = FCPIO_FLOGI_FIP_REG; /* enum fcpio_type */
desc->hdr.status = 0; /* header status entry */
desc->hdr._resvd = 0; /* reserved */
desc->hdr.tag.u.req_id = req_id; /* id for this request */
desc->u.flogi_fip_reg._resvd0 = 0;
hton24(desc->u.flogi_fip_reg.s_id, s_id);
memcpy(desc->u.flogi_fip_reg.fcf_mac, fcf_mac, ETH_ALEN);
desc->u.flogi_fip_reg._resvd1 = 0;
desc->u.flogi_fip_reg.r_a_tov = r_a_tov;
desc->u.flogi_fip_reg.e_d_tov = e_d_tov;
memcpy(desc->u.flogi_fip_reg.ha_mac, ha_mac, ETH_ALEN);
desc->u.flogi_fip_reg._resvd2 = 0;
vnic_wq_copy_post(wq);
}
static inline void fnic_queue_wq_copy_desc_fw_reset(struct vnic_wq_copy *wq,
u32 req_id)
{
struct fcpio_host_req *desc = vnic_wq_copy_next_desc(wq);
desc->hdr.type = FCPIO_RESET; /* enum fcpio_type */
desc->hdr.status = 0; /* header status entry */
desc->hdr._resvd = 0; /* reserved */
desc->hdr.tag.u.req_id = req_id; /* id for this request */
vnic_wq_copy_post(wq);
}
static inline void fnic_queue_wq_copy_desc_lunmap(struct vnic_wq_copy *wq,
u32 req_id, u64 lunmap_addr,
u32 lunmap_len)
{
struct fcpio_host_req *desc = vnic_wq_copy_next_desc(wq);
desc->hdr.type = FCPIO_LUNMAP_REQ; /* enum fcpio_type */
desc->hdr.status = 0; /* header status entry */
desc->hdr._resvd = 0; /* reserved */
desc->hdr.tag.u.req_id = req_id; /* id for this request */
desc->u.lunmap_req.addr = lunmap_addr; /* address of the buffer */
desc->u.lunmap_req.len = lunmap_len; /* len of the buffer */
vnic_wq_copy_post(wq);
}
static inline void fnic_queue_rq_desc(struct vnic_rq *rq,
void *os_buf, dma_addr_t dma_addr,
u16 len)
{
struct rq_enet_desc *desc = vnic_rq_next_desc(rq);
rq_enet_desc_enc(desc,
(u64)dma_addr | VNIC_PADDR_TARGET,
RQ_ENET_TYPE_ONLY_SOP,
(u16)len);
vnic_rq_post(rq, os_buf, 0, dma_addr, len);
}
struct fnic;
int fnic_get_vnic_config(struct fnic *);
int fnic_alloc_vnic_resources(struct fnic *);
void fnic_free_vnic_resources(struct fnic *);
void fnic_get_res_counts(struct fnic *);
int fnic_set_nic_config(struct fnic *fnic, u8 rss_default_cpu,
u8 rss_hash_type, u8 rss_hash_bits, u8 rss_base_cpu,
u8 rss_enable, u8 tso_ipid_split_en,
u8 ig_vlan_strip_en);
#endif /* _FNIC_RES_H_ */
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