/*
* Copyright (c) 2018-2019 Cavium, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/*
* File : ecore_iwarp.c
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include "bcm_osal.h"
#include "ecore.h"
#include "ecore_status.h"
#include "ecore_sp_commands.h"
#include "ecore_cxt.h"
#include "ecore_rdma.h"
#include "reg_addr.h"
#include "ecore_hw.h"
#include "ecore_hsi_iwarp.h"
#include "ecore_ll2.h"
#include "ecore_ooo.h"
#ifndef LINUX_REMOVE
#include "ecore_tcp_ip.h"
#endif
#ifdef _NTDDK_
#pragma warning(push)
#pragma warning(disable : 28123)
#pragma warning(disable : 28167)
#endif
/* Default values used for MPA Rev 1 */
#define ECORE_IWARP_ORD_DEFAULT 32
#define ECORE_IWARP_IRD_DEFAULT 32
#define ECORE_IWARP_MAX_FW_MSS 4120
struct mpa_v2_hdr {
__be16 ird;
__be16 ord;
};
#define MPA_V2_PEER2PEER_MODEL 0x8000
#define MPA_V2_SEND_RTR 0x4000 /* on ird */
#define MPA_V2_READ_RTR 0x4000 /* on ord */
#define MPA_V2_WRITE_RTR 0x8000
#define MPA_V2_IRD_ORD_MASK 0x3FFF
#define MPA_REV2(_mpa_rev) (_mpa_rev == MPA_NEGOTIATION_TYPE_ENHANCED)
#define ECORE_IWARP_INVALID_TCP_CID 0xffffffff
/* How many times fin will be sent before FW aborts and send RST */
#define ECORE_IWARP_MAX_FIN_RT_DEFAULT 2
#define ECORE_IWARP_RCV_WND_SIZE_MIN (0xffff)
/* INTERNAL: These numbers are derived from BRB buffer sizes to obtain optimal performance */
#define ECORE_IWARP_RCV_WND_SIZE_BB_DEF_2_PORTS (200*1024)
#define ECORE_IWARP_RCV_WND_SIZE_BB_DEF_4_PORTS (100*1024)
#define ECORE_IWARP_RCV_WND_SIZE_AH_DEF_2_PORTS (150*1024)
#define ECORE_IWARP_RCV_WND_SIZE_AH_DEF_4_PORTS (90*1024)
#define ECORE_IWARP_MAX_WND_SCALE (14)
/* Timestamp header is the length of the timestamp option (10):
* kind:8 bit, length:8 bit, timestamp:32 bit, ack: 32bit
* rounded up to a multiple of 4
*/
#define TIMESTAMP_HEADER_SIZE (12)
static enum _ecore_status_t
ecore_iwarp_async_event(struct ecore_hwfn *p_hwfn,
u8 fw_event_code,
u16 OSAL_UNUSED echo,
union event_ring_data *data,
u8 fw_return_code);
static enum _ecore_status_t
ecore_iwarp_empty_ramrod(struct ecore_hwfn *p_hwfn,
struct ecore_iwarp_listener *listener);
static OSAL_INLINE struct ecore_iwarp_fpdu *
ecore_iwarp_get_curr_fpdu(struct ecore_hwfn *p_hwfn, u16 cid);
/* Override devinfo with iWARP specific values */
void
ecore_iwarp_init_devinfo(struct ecore_hwfn *p_hwfn)
{
struct ecore_rdma_device *dev = p_hwfn->p_rdma_info->dev;
dev->max_inline = IWARP_REQ_MAX_INLINE_DATA_SIZE;
dev->max_qp = OSAL_MIN_T(u64,
IWARP_MAX_QPS,
p_hwfn->p_rdma_info->num_qps) -
ECORE_IWARP_PREALLOC_CNT;
dev->max_cq = dev->max_qp;
dev->max_qp_resp_rd_atomic_resc = ECORE_IWARP_IRD_DEFAULT;
dev->max_qp_req_rd_atomic_resc = ECORE_IWARP_ORD_DEFAULT;
}
enum _ecore_status_t
ecore_iwarp_init_hw(struct ecore_hwfn *p_hwfn, struct ecore_ptt *p_ptt)
{
p_hwfn->rdma_prs_search_reg = PRS_REG_SEARCH_TCP;
ecore_wr(p_hwfn, p_ptt, p_hwfn->rdma_prs_search_reg, 1);
p_hwfn->b_rdma_enabled_in_prs = true;
return 0;
}
void
ecore_iwarp_init_fw_ramrod(struct ecore_hwfn *p_hwfn,
struct iwarp_init_func_ramrod_data *p_ramrod)
{
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA,
"ooo handle = %d\n",
p_hwfn->p_rdma_info->iwarp.ll2_ooo_handle);
p_ramrod->iwarp.ll2_ooo_q_index =
p_hwfn->hw_info.resc_start[ECORE_LL2_QUEUE] +
p_hwfn->p_rdma_info->iwarp.ll2_ooo_handle;
p_ramrod->tcp.max_fin_rt = ECORE_IWARP_MAX_FIN_RT_DEFAULT;
return;
}
static enum _ecore_status_t
ecore_iwarp_alloc_cid(struct ecore_hwfn *p_hwfn, u32 *cid)
{
enum _ecore_status_t rc;
OSAL_SPIN_LOCK(&p_hwfn->p_rdma_info->lock);
rc = ecore_rdma_bmap_alloc_id(p_hwfn,
&p_hwfn->p_rdma_info->cid_map,
cid);
OSAL_SPIN_UNLOCK(&p_hwfn->p_rdma_info->lock);
*cid += ecore_cxt_get_proto_cid_start(p_hwfn,
p_hwfn->p_rdma_info->proto);
if (rc != ECORE_SUCCESS) {
DP_NOTICE(p_hwfn, false, "Failed in allocating iwarp cid\n");
return rc;
}
rc = ecore_cxt_dynamic_ilt_alloc(p_hwfn, ECORE_ELEM_CXT, *cid);
if (rc != ECORE_SUCCESS) {
OSAL_SPIN_LOCK(&p_hwfn->p_rdma_info->lock);
*cid -= ecore_cxt_get_proto_cid_start(p_hwfn,
p_hwfn->p_rdma_info->proto);
ecore_bmap_release_id(p_hwfn,
&p_hwfn->p_rdma_info->cid_map,
*cid);
OSAL_SPIN_UNLOCK(&p_hwfn->p_rdma_info->lock);
}
return rc;
}
static void
ecore_iwarp_set_tcp_cid(struct ecore_hwfn *p_hwfn, u32 cid)
{
cid -= ecore_cxt_get_proto_cid_start(p_hwfn,
p_hwfn->p_rdma_info->proto);
OSAL_SPIN_LOCK(&p_hwfn->p_rdma_info->lock);
ecore_bmap_set_id(p_hwfn,
&p_hwfn->p_rdma_info->tcp_cid_map,
cid);
OSAL_SPIN_UNLOCK(&p_hwfn->p_rdma_info->lock);
}
/* This function allocates a cid for passive tcp ( called from syn receive)
* the reason it's separate from the regular cid allocation is because it
* is assured that these cids already have ilt alloacted. They are preallocated
* to ensure that we won't need to allocate memory during syn processing
*/
static enum _ecore_status_t
ecore_iwarp_alloc_tcp_cid(struct ecore_hwfn *p_hwfn, u32 *cid)
{
enum _ecore_status_t rc;
OSAL_SPIN_LOCK(&p_hwfn->p_rdma_info->lock);
rc = ecore_rdma_bmap_alloc_id(p_hwfn,
&p_hwfn->p_rdma_info->tcp_cid_map,
cid);
OSAL_SPIN_UNLOCK(&p_hwfn->p_rdma_info->lock);
*cid += ecore_cxt_get_proto_cid_start(p_hwfn,
p_hwfn->p_rdma_info->proto);
if (rc != ECORE_SUCCESS) {
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA,
"can't allocate iwarp tcp cid max-count=%d\n",
p_hwfn->p_rdma_info->tcp_cid_map.max_count);
*cid = ECORE_IWARP_INVALID_TCP_CID;
}
return rc;
}
/* We have two cid maps, one for tcp which should be used only from passive
* syn processing and replacing a pre-allocated ep in the list. the second
* for active tcp and for QPs.
*/
static void ecore_iwarp_cid_cleaned(struct ecore_hwfn *p_hwfn, u32 cid)
{
cid -= ecore_cxt_get_proto_cid_start(p_hwfn,
p_hwfn->p_rdma_info->proto);
OSAL_SPIN_LOCK(&p_hwfn->p_rdma_info->lock);
if (cid < ECORE_IWARP_PREALLOC_CNT) {
ecore_bmap_release_id(p_hwfn,
&p_hwfn->p_rdma_info->tcp_cid_map,
cid);
} else {
ecore_bmap_release_id(p_hwfn,
&p_hwfn->p_rdma_info->cid_map,
cid);
}
OSAL_SPIN_UNLOCK(&p_hwfn->p_rdma_info->lock);
}
enum _ecore_status_t
ecore_iwarp_create_qp(struct ecore_hwfn *p_hwfn,
struct ecore_rdma_qp *qp,
struct ecore_rdma_create_qp_out_params *out_params)
{
struct iwarp_create_qp_ramrod_data *p_ramrod;
struct ecore_sp_init_data init_data;
struct ecore_spq_entry *p_ent;
enum _ecore_status_t rc;
u16 physical_queue;
u32 cid;
qp->shared_queue =
OSAL_DMA_ALLOC_COHERENT(p_hwfn->p_dev,
&qp->shared_queue_phys_addr,
IWARP_SHARED_QUEUE_PAGE_SIZE);
if (!qp->shared_queue) {
DP_NOTICE(p_hwfn, false,
"ecore iwarp create qp failed: cannot allocate memory (shared queue).\n");
return ECORE_NOMEM;
} else {
out_params->sq_pbl_virt = (u8 *)qp->shared_queue +
IWARP_SHARED_QUEUE_PAGE_SQ_PBL_OFFSET;
out_params->sq_pbl_phys = qp->shared_queue_phys_addr +
IWARP_SHARED_QUEUE_PAGE_SQ_PBL_OFFSET;
out_params->rq_pbl_virt = (u8 *)qp->shared_queue +
IWARP_SHARED_QUEUE_PAGE_RQ_PBL_OFFSET;
out_params->rq_pbl_phys = qp->shared_queue_phys_addr +
IWARP_SHARED_QUEUE_PAGE_RQ_PBL_OFFSET;
}
rc = ecore_iwarp_alloc_cid(p_hwfn, &cid);
if (rc != ECORE_SUCCESS)
goto err1;
qp->icid = (u16)cid;
OSAL_MEMSET(&init_data, 0, sizeof(init_data));
init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
init_data.cid = qp->icid;
init_data.comp_mode = ECORE_SPQ_MODE_EBLOCK;
rc = ecore_sp_init_request(p_hwfn, &p_ent,
IWARP_RAMROD_CMD_ID_CREATE_QP,
PROTOCOLID_IWARP, &init_data);
if (rc != ECORE_SUCCESS)
return rc;
p_ramrod = &p_ent->ramrod.iwarp_create_qp;
SET_FIELD(p_ramrod->flags,
IWARP_CREATE_QP_RAMROD_DATA_FMR_AND_RESERVED_EN,
qp->fmr_and_reserved_lkey);
SET_FIELD(p_ramrod->flags,
IWARP_CREATE_QP_RAMROD_DATA_SIGNALED_COMP,
qp->signal_all);
SET_FIELD(p_ramrod->flags,
IWARP_CREATE_QP_RAMROD_DATA_RDMA_RD_EN,
qp->incoming_rdma_read_en);
SET_FIELD(p_ramrod->flags,
IWARP_CREATE_QP_RAMROD_DATA_RDMA_WR_EN,
qp->incoming_rdma_write_en);
SET_FIELD(p_ramrod->flags,
IWARP_CREATE_QP_RAMROD_DATA_ATOMIC_EN,
qp->incoming_atomic_en);
SET_FIELD(p_ramrod->flags,
IWARP_CREATE_QP_RAMROD_DATA_SRQ_FLG,
qp->use_srq);
p_ramrod->pd = qp->pd;
p_ramrod->sq_num_pages = qp->sq_num_pages;
p_ramrod->rq_num_pages = qp->rq_num_pages;
p_ramrod->qp_handle_for_cqe.hi = OSAL_CPU_TO_LE32(qp->qp_handle.hi);
p_ramrod->qp_handle_for_cqe.lo = OSAL_CPU_TO_LE32(qp->qp_handle.lo);
p_ramrod->cq_cid_for_sq =
OSAL_CPU_TO_LE32((p_hwfn->hw_info.opaque_fid << 16) |
qp->sq_cq_id);
p_ramrod->cq_cid_for_rq =
OSAL_CPU_TO_LE32((p_hwfn->hw_info.opaque_fid << 16) |
qp->rq_cq_id);
p_ramrod->dpi = OSAL_CPU_TO_LE16(qp->dpi);
physical_queue = ecore_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OFLD);
p_ramrod->physical_q0 = OSAL_CPU_TO_LE16(physical_queue);
physical_queue = ecore_get_cm_pq_idx(p_hwfn, PQ_FLAGS_ACK);
p_ramrod->physical_q1 = OSAL_CPU_TO_LE16(physical_queue);
rc = ecore_spq_post(p_hwfn, p_ent, OSAL_NULL);
if (rc != ECORE_SUCCESS)
goto err1;
return rc;
err1:
OSAL_DMA_FREE_COHERENT(p_hwfn->p_dev,
qp->shared_queue,
qp->shared_queue_phys_addr,
IWARP_SHARED_QUEUE_PAGE_SIZE);
return rc;
}
static enum _ecore_status_t
ecore_iwarp_modify_fw(struct ecore_hwfn *p_hwfn,
struct ecore_rdma_qp *qp)
{
struct iwarp_modify_qp_ramrod_data *p_ramrod;
struct ecore_sp_init_data init_data;
struct ecore_spq_entry *p_ent;
enum _ecore_status_t rc;
/* Get SPQ entry */
OSAL_MEMSET(&init_data, 0, sizeof(init_data));
init_data.cid = qp->icid;
init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
init_data.comp_mode = ECORE_SPQ_MODE_EBLOCK;
rc = ecore_sp_init_request(p_hwfn, &p_ent,
IWARP_RAMROD_CMD_ID_MODIFY_QP,
p_hwfn->p_rdma_info->proto,
&init_data);
if (rc != ECORE_SUCCESS)
return rc;
p_ramrod = &p_ent->ramrod.iwarp_modify_qp;
SET_FIELD(p_ramrod->flags, IWARP_MODIFY_QP_RAMROD_DATA_STATE_TRANS_EN,
0x1);
if (qp->iwarp_state == ECORE_IWARP_QP_STATE_CLOSING)
p_ramrod->transition_to_state = IWARP_MODIFY_QP_STATE_CLOSING;
else
p_ramrod->transition_to_state = IWARP_MODIFY_QP_STATE_ERROR;
rc = ecore_spq_post(p_hwfn, p_ent, OSAL_NULL);
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA, "QP(0x%x)rc=%d\n",
qp->icid, rc);
return rc;
}
enum ecore_iwarp_qp_state
ecore_roce2iwarp_state(enum ecore_roce_qp_state state)
{
switch (state) {
case ECORE_ROCE_QP_STATE_RESET:
case ECORE_ROCE_QP_STATE_INIT:
case ECORE_ROCE_QP_STATE_RTR:
return ECORE_IWARP_QP_STATE_IDLE;
case ECORE_ROCE_QP_STATE_RTS:
return ECORE_IWARP_QP_STATE_RTS;
case ECORE_ROCE_QP_STATE_SQD:
return ECORE_IWARP_QP_STATE_CLOSING;
case ECORE_ROCE_QP_STATE_ERR:
return ECORE_IWARP_QP_STATE_ERROR;
case ECORE_ROCE_QP_STATE_SQE:
return ECORE_IWARP_QP_STATE_TERMINATE;
}
return ECORE_IWARP_QP_STATE_ERROR;
}
static enum ecore_roce_qp_state
ecore_iwarp2roce_state(enum ecore_iwarp_qp_state state)
{
switch (state) {
case ECORE_IWARP_QP_STATE_IDLE:
return ECORE_ROCE_QP_STATE_INIT;
case ECORE_IWARP_QP_STATE_RTS:
return ECORE_ROCE_QP_STATE_RTS;
case ECORE_IWARP_QP_STATE_TERMINATE:
return ECORE_ROCE_QP_STATE_SQE;
case ECORE_IWARP_QP_STATE_CLOSING:
return ECORE_ROCE_QP_STATE_SQD;
case ECORE_IWARP_QP_STATE_ERROR:
return ECORE_ROCE_QP_STATE_ERR;
}
return ECORE_ROCE_QP_STATE_ERR;
}
const char *iwarp_state_names[] = {
"IDLE",
"RTS",
"TERMINATE",
"CLOSING",
"ERROR",
};
enum _ecore_status_t
ecore_iwarp_modify_qp(struct ecore_hwfn *p_hwfn,
struct ecore_rdma_qp *qp,
enum ecore_iwarp_qp_state new_state,
bool internal)
{
enum ecore_iwarp_qp_state prev_iw_state;
enum _ecore_status_t rc = 0;
bool modify_fw = false;
/* modify QP can be called from upper-layer or as a result of async
* RST/FIN... therefore need to protect
*/
OSAL_SPIN_LOCK(&p_hwfn->p_rdma_info->iwarp.qp_lock);
prev_iw_state = qp->iwarp_state;
if (prev_iw_state == new_state) {
OSAL_SPIN_UNLOCK(&p_hwfn->p_rdma_info->iwarp.qp_lock);
return ECORE_SUCCESS;
}
switch (prev_iw_state) {
case ECORE_IWARP_QP_STATE_IDLE:
switch (new_state) {
case ECORE_IWARP_QP_STATE_RTS:
qp->iwarp_state = ECORE_IWARP_QP_STATE_RTS;
break;
case ECORE_IWARP_QP_STATE_ERROR:
qp->iwarp_state = ECORE_IWARP_QP_STATE_ERROR;
if (!internal)
modify_fw = true;
break;
default:
break;
}
break;
case ECORE_IWARP_QP_STATE_RTS:
switch (new_state) {
case ECORE_IWARP_QP_STATE_CLOSING:
if (!internal)
modify_fw = true;
qp->iwarp_state = ECORE_IWARP_QP_STATE_CLOSING;
break;
case ECORE_IWARP_QP_STATE_ERROR:
if (!internal)
modify_fw = true;
qp->iwarp_state = ECORE_IWARP_QP_STATE_ERROR;
break;
default:
break;
}
break;
case ECORE_IWARP_QP_STATE_ERROR:
switch (new_state) {
case ECORE_IWARP_QP_STATE_IDLE:
/* TODO: destroy flow -> need to destroy EP&QP */
qp->iwarp_state = new_state;
break;
case ECORE_IWARP_QP_STATE_CLOSING:
/* could happen due to race... do nothing.... */
break;
default:
rc = ECORE_INVAL;
}
break;
case ECORE_IWARP_QP_STATE_TERMINATE:
case ECORE_IWARP_QP_STATE_CLOSING:
qp->iwarp_state = new_state;
break;
default:
break;
}
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA, "QP(0x%x) %s --> %s %s\n",
qp->icid,
iwarp_state_names[prev_iw_state],
iwarp_state_names[qp->iwarp_state],
internal ? "internal" : " ");
OSAL_SPIN_UNLOCK(&p_hwfn->p_rdma_info->iwarp.qp_lock);
if (modify_fw)
ecore_iwarp_modify_fw(p_hwfn, qp);
return rc;
}
enum _ecore_status_t
ecore_iwarp_fw_destroy(struct ecore_hwfn *p_hwfn,
struct ecore_rdma_qp *qp)
{
struct ecore_sp_init_data init_data;
struct ecore_spq_entry *p_ent;
enum _ecore_status_t rc;
/* Get SPQ entry */
OSAL_MEMSET(&init_data, 0, sizeof(init_data));
init_data.cid = qp->icid;
init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
init_data.comp_mode = ECORE_SPQ_MODE_EBLOCK;
rc = ecore_sp_init_request(p_hwfn, &p_ent,
IWARP_RAMROD_CMD_ID_DESTROY_QP,
p_hwfn->p_rdma_info->proto,
&init_data);
if (rc != ECORE_SUCCESS)
return rc;
rc = ecore_spq_post(p_hwfn, p_ent, OSAL_NULL);
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA, "QP(0x%x) rc = %d\n", qp->icid, rc);
return rc;
}
static void ecore_iwarp_destroy_ep(struct ecore_hwfn *p_hwfn,
struct ecore_iwarp_ep *ep,
bool remove_from_active_list)
{
OSAL_DMA_FREE_COHERENT(p_hwfn->p_dev,
ep->ep_buffer_virt,
ep->ep_buffer_phys,
sizeof(*ep->ep_buffer_virt));
if (remove_from_active_list) {
OSAL_SPIN_LOCK(&p_hwfn->p_rdma_info->iwarp.iw_lock);
OSAL_LIST_REMOVE_ENTRY(&ep->list_entry,
&p_hwfn->p_rdma_info->iwarp.ep_list);
OSAL_SPIN_UNLOCK(&p_hwfn->p_rdma_info->iwarp.iw_lock);
}
if (ep->qp)
ep->qp->ep = OSAL_NULL;
OSAL_FREE(p_hwfn->p_dev, ep);
}
enum _ecore_status_t
ecore_iwarp_destroy_qp(struct ecore_hwfn *p_hwfn,
struct ecore_rdma_qp *qp)
{
enum _ecore_status_t rc = ECORE_SUCCESS;
struct ecore_iwarp_ep *ep = qp->ep;
struct ecore_iwarp_fpdu *fpdu;
int wait_count = 0;
fpdu = ecore_iwarp_get_curr_fpdu(p_hwfn, qp->icid);
if (fpdu && fpdu->incomplete_bytes)
DP_NOTICE(p_hwfn, false,
"Pending Partial fpdu with incomplete bytes=%d\n",
fpdu->incomplete_bytes);
if (qp->iwarp_state != ECORE_IWARP_QP_STATE_ERROR) {
rc = ecore_iwarp_modify_qp(p_hwfn, qp,
ECORE_IWARP_QP_STATE_ERROR,
false);
if (rc != ECORE_SUCCESS)
return rc;
}
/* Make sure ep is closed before returning and freeing memory. */
if (ep) {
while (ep->state != ECORE_IWARP_EP_CLOSED) {
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA,
"Waiting for ep->state to be closed...state=%x\n",
ep->state);
OSAL_MSLEEP(100);
if (wait_count++ > 200) {
DP_NOTICE(p_hwfn, false, "ep state close timeout state=%x\n",
ep->state);
break;
}
}
ecore_iwarp_destroy_ep(p_hwfn, ep, false);
}
rc = ecore_iwarp_fw_destroy(p_hwfn, qp);
if (qp->shared_queue)
OSAL_DMA_FREE_COHERENT(p_hwfn->p_dev,
qp->shared_queue,
qp->shared_queue_phys_addr,
IWARP_SHARED_QUEUE_PAGE_SIZE);
return rc;
}
static enum _ecore_status_t
ecore_iwarp_create_ep(struct ecore_hwfn *p_hwfn,
struct ecore_iwarp_ep **ep_out)
{
struct ecore_iwarp_ep *ep;
enum _ecore_status_t rc;
ep = OSAL_ZALLOC(p_hwfn->p_dev, GFP_KERNEL, sizeof(*ep));
if (!ep) {
DP_NOTICE(p_hwfn, false,
"ecore create ep failed: cannot allocate memory (ep). rc = %d\n",
ECORE_NOMEM);
return ECORE_NOMEM;
}
ep->state = ECORE_IWARP_EP_INIT;
/* ep_buffer is allocated once and is structured as follows:
* [MAX_PRIV_DATA_LEN][MAX_PRIV_DATA_LEN][union async_output]
* We could have allocated this in three calls but since all together
* it is less than a page, we do one allocation and initialize pointers
* accordingly
*/
ep->ep_buffer_virt = OSAL_DMA_ALLOC_COHERENT(
p_hwfn->p_dev,
&ep->ep_buffer_phys,
sizeof(*ep->ep_buffer_virt));
if (!ep->ep_buffer_virt) {
DP_NOTICE(p_hwfn, false,
"ecore create ep failed: cannot allocate memory (ulp buffer). rc = %d\n",
ECORE_NOMEM);
rc = ECORE_NOMEM;
goto err;
}
ep->sig = 0xdeadbeef;
*ep_out = ep;
return ECORE_SUCCESS;
err:
OSAL_FREE(p_hwfn->p_dev, ep);
return rc;
}
static void
ecore_iwarp_print_tcp_ramrod(struct ecore_hwfn *p_hwfn,
struct iwarp_tcp_offload_ramrod_data *p_tcp_ramrod)
{
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA, ">>> PRINT TCP RAMROD\n");
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA, "local_mac=%x %x %x\n",
p_tcp_ramrod->tcp.local_mac_addr_lo,
p_tcp_ramrod->tcp.local_mac_addr_mid,
p_tcp_ramrod->tcp.local_mac_addr_hi);
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA, "remote_mac=%x %x %x\n",
p_tcp_ramrod->tcp.remote_mac_addr_lo,
p_tcp_ramrod->tcp.remote_mac_addr_mid,
p_tcp_ramrod->tcp.remote_mac_addr_hi);
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA, "vlan_id=%x\n",
p_tcp_ramrod->tcp.vlan_id);
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA, "flags=%x\n",
p_tcp_ramrod->tcp.flags);
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA, "ip_version=%x\n",
p_tcp_ramrod->tcp.ip_version);
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA, "local_ip=%x.%x.%x.%x\n",
p_tcp_ramrod->tcp.local_ip[0],
p_tcp_ramrod->tcp.local_ip[1],
p_tcp_ramrod->tcp.local_ip[2],
p_tcp_ramrod->tcp.local_ip[3]);
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA, "remote_ip=%x.%x.%x.%x\n",
p_tcp_ramrod->tcp.remote_ip[0],
p_tcp_ramrod->tcp.remote_ip[1],
p_tcp_ramrod->tcp.remote_ip[2],
p_tcp_ramrod->tcp.remote_ip[3]);
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA, "flow_label=%x\n",
p_tcp_ramrod->tcp.flow_label);
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA, "ttl=%x\n",
p_tcp_ramrod->tcp.ttl);
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA, "tos_or_tc=%x\n",
p_tcp_ramrod->tcp.tos_or_tc);
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA, "local_port=%x\n",
p_tcp_ramrod->tcp.local_port);
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA, "remote_port=%x\n",
p_tcp_ramrod->tcp.remote_port);
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA, "mss=%x\n",
p_tcp_ramrod->tcp.mss);
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA, "rcv_wnd_scale=%x\n",
p_tcp_ramrod->tcp.rcv_wnd_scale);
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA, "connect_mode=%x\n",
p_tcp_ramrod->tcp.connect_mode);
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA, "syn_ip_payload_length=%x\n",
p_tcp_ramrod->tcp.syn_ip_payload_length);
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA, "syn_phy_addr_lo=%x\n",
p_tcp_ramrod->tcp.syn_phy_addr_lo);
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA, "syn_phy_addr_hi=%x\n",
p_tcp_ramrod->tcp.syn_phy_addr_hi);
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA, "<<<f PRINT TCP RAMROD\n");
}
/* Default values for tcp option2 */
#define ECORE_IWARP_DEF_MAX_RT_TIME (0)
#define ECORE_IWARP_DEF_CWND_FACTOR (4)
#define ECORE_IWARP_DEF_KA_MAX_PROBE_CNT (5)
#define ECORE_IWARP_DEF_KA_TIMEOUT (1200000) /* 20 min */
#define ECORE_IWARP_DEF_KA_INTERVAL (1000) /* 1 sec */
static enum _ecore_status_t
ecore_iwarp_tcp_offload(struct ecore_hwfn *p_hwfn,
struct ecore_iwarp_ep *ep)
{
struct ecore_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp;
struct iwarp_tcp_offload_ramrod_data *p_tcp_ramrod;
struct ecore_sp_init_data init_data;
struct ecore_spq_entry *p_ent;
dma_addr_t async_output_phys;
dma_addr_t in_pdata_phys;
enum _ecore_status_t rc;
u16 physical_q;
u8 tcp_flags;
int i;
OSAL_MEMSET(&init_data, 0, sizeof(init_data));
init_data.cid = ep->tcp_cid;
init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
if (ep->connect_mode == TCP_CONNECT_PASSIVE) {
init_data.comp_mode = ECORE_SPQ_MODE_CB;
} else {
init_data.comp_mode = ECORE_SPQ_MODE_EBLOCK;
}
rc = ecore_sp_init_request(p_hwfn, &p_ent,
IWARP_RAMROD_CMD_ID_TCP_OFFLOAD,
PROTOCOLID_IWARP, &init_data);
if (rc != ECORE_SUCCESS)
return rc;
p_tcp_ramrod = &p_ent->ramrod.iwarp_tcp_offload;
/* Point to the "second half" of the ulp buffer */
in_pdata_phys = ep->ep_buffer_phys +
OFFSETOF(struct ecore_iwarp_ep_memory, in_pdata);
p_tcp_ramrod->iwarp.incoming_ulp_buffer.addr.hi =
DMA_HI_LE(in_pdata_phys);
p_tcp_ramrod->iwarp.incoming_ulp_buffer.addr.lo =
DMA_LO_LE(in_pdata_phys);
p_tcp_ramrod->iwarp.incoming_ulp_buffer.len =
OSAL_CPU_TO_LE16(sizeof(ep->ep_buffer_virt->in_pdata));
async_output_phys = ep->ep_buffer_phys +
OFFSETOF(struct ecore_iwarp_ep_memory, async_output);
p_tcp_ramrod->iwarp.async_eqe_output_buf.hi =
DMA_HI_LE(async_output_phys);
p_tcp_ramrod->iwarp.async_eqe_output_buf.lo =
DMA_LO_LE(async_output_phys);
p_tcp_ramrod->iwarp.handle_for_async.hi = OSAL_CPU_TO_LE32(PTR_HI(ep));
p_tcp_ramrod->iwarp.handle_for_async.lo = OSAL_CPU_TO_LE32(PTR_LO(ep));
physical_q = ecore_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OFLD);
p_tcp_ramrod->iwarp.physical_q0 = OSAL_CPU_TO_LE16(physical_q);
physical_q = ecore_get_cm_pq_idx(p_hwfn, PQ_FLAGS_ACK);
p_tcp_ramrod->iwarp.physical_q1 = OSAL_CPU_TO_LE16(physical_q);
p_tcp_ramrod->iwarp.mpa_mode = iwarp_info->mpa_rev;
ecore_set_fw_mac_addr(&p_tcp_ramrod->tcp.remote_mac_addr_hi,
&p_tcp_ramrod->tcp.remote_mac_addr_mid,
&p_tcp_ramrod->tcp.remote_mac_addr_lo,
ep->remote_mac_addr);
ecore_set_fw_mac_addr(&p_tcp_ramrod->tcp.local_mac_addr_hi,
&p_tcp_ramrod->tcp.local_mac_addr_mid,
&p_tcp_ramrod->tcp.local_mac_addr_lo,
ep->local_mac_addr);
p_tcp_ramrod->tcp.vlan_id = OSAL_CPU_TO_LE16(ep->cm_info.vlan);
tcp_flags = p_hwfn->p_rdma_info->iwarp.tcp_flags;
p_tcp_ramrod->tcp.flags = 0;
SET_FIELD(p_tcp_ramrod->tcp.flags,
TCP_OFFLOAD_PARAMS_OPT2_TS_EN,
!!(tcp_flags & ECORE_IWARP_TS_EN));
SET_FIELD(p_tcp_ramrod->tcp.flags,
TCP_OFFLOAD_PARAMS_OPT2_DA_EN,
!!(tcp_flags & ECORE_IWARP_DA_EN));
p_tcp_ramrod->tcp.ip_version = ep->cm_info.ip_version;
for (i = 0; i < 4; i++) {
p_tcp_ramrod->tcp.remote_ip[i] =
OSAL_CPU_TO_LE32(ep->cm_info.remote_ip[i]);
p_tcp_ramrod->tcp.local_ip[i] =
OSAL_CPU_TO_LE32(ep->cm_info.local_ip[i]);
}
p_tcp_ramrod->tcp.remote_port =
OSAL_CPU_TO_LE16(ep->cm_info.remote_port);
p_tcp_ramrod->tcp.local_port = OSAL_CPU_TO_LE16(ep->cm_info.local_port);
p_tcp_ramrod->tcp.mss = OSAL_CPU_TO_LE16(ep->mss);
p_tcp_ramrod->tcp.flow_label = 0;
p_tcp_ramrod->tcp.ttl = 0x40;
p_tcp_ramrod->tcp.tos_or_tc = 0;
p_tcp_ramrod->tcp.max_rt_time = ECORE_IWARP_DEF_MAX_RT_TIME;
p_tcp_ramrod->tcp.cwnd = ECORE_IWARP_DEF_CWND_FACTOR * p_tcp_ramrod->tcp.mss;
p_tcp_ramrod->tcp.ka_max_probe_cnt = ECORE_IWARP_DEF_KA_MAX_PROBE_CNT;
p_tcp_ramrod->tcp.ka_timeout = ECORE_IWARP_DEF_KA_TIMEOUT;
p_tcp_ramrod->tcp.ka_interval = ECORE_IWARP_DEF_KA_INTERVAL;
p_tcp_ramrod->tcp.rcv_wnd_scale =
(u8)p_hwfn->p_rdma_info->iwarp.rcv_wnd_scale;
p_tcp_ramrod->tcp.connect_mode = ep->connect_mode;
if (ep->connect_mode == TCP_CONNECT_PASSIVE) {
p_tcp_ramrod->tcp.syn_ip_payload_length =
OSAL_CPU_TO_LE16(ep->syn_ip_payload_length);
p_tcp_ramrod->tcp.syn_phy_addr_hi =
DMA_HI_LE(ep->syn_phy_addr);
p_tcp_ramrod->tcp.syn_phy_addr_lo =
DMA_LO_LE(ep->syn_phy_addr);
}
ecore_iwarp_print_tcp_ramrod(p_hwfn, p_tcp_ramrod);
rc = ecore_spq_post(p_hwfn, p_ent, OSAL_NULL);
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA,
"EP(0x%x) Offload completed rc=%d\n" , ep->tcp_cid, rc);
return rc;
}
/* This function should be called after IWARP_EVENT_TYPE_ASYNC_CONNECT_COMPLETE
* is received. it will be called from the dpc context.
*/
static enum _ecore_status_t
ecore_iwarp_mpa_offload(struct ecore_hwfn *p_hwfn,
struct ecore_iwarp_ep *ep)
{
struct iwarp_mpa_offload_ramrod_data *p_mpa_ramrod;
struct ecore_iwarp_info *iwarp_info;
struct ecore_sp_init_data init_data;
struct ecore_spq_entry *p_ent;
dma_addr_t async_output_phys;
dma_addr_t out_pdata_phys;
dma_addr_t in_pdata_phys;
struct ecore_rdma_qp *qp;
bool reject;
enum _ecore_status_t rc;
if (!ep)
return ECORE_INVAL;
qp = ep->qp;
reject = (qp == OSAL_NULL);
OSAL_MEMSET(&init_data, 0, sizeof(init_data));
init_data.cid = reject ? ep->tcp_cid : qp->icid;
init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
if (ep->connect_mode == TCP_CONNECT_ACTIVE || !ep->event_cb)
init_data.comp_mode = ECORE_SPQ_MODE_CB;
else
init_data.comp_mode = ECORE_SPQ_MODE_EBLOCK;
rc = ecore_sp_init_request(p_hwfn, &p_ent,
IWARP_RAMROD_CMD_ID_MPA_OFFLOAD,
PROTOCOLID_IWARP, &init_data);
if (rc != ECORE_SUCCESS)
return rc;
p_mpa_ramrod = &p_ent->ramrod.iwarp_mpa_offload;
out_pdata_phys = ep->ep_buffer_phys +
OFFSETOF(struct ecore_iwarp_ep_memory, out_pdata);
p_mpa_ramrod->common.outgoing_ulp_buffer.addr.hi =
DMA_HI_LE(out_pdata_phys);
p_mpa_ramrod->common.outgoing_ulp_buffer.addr.lo =
DMA_LO_LE(out_pdata_phys);
p_mpa_ramrod->common.outgoing_ulp_buffer.len =
ep->cm_info.private_data_len;
p_mpa_ramrod->common.crc_needed = p_hwfn->p_rdma_info->iwarp.crc_needed;
p_mpa_ramrod->common.out_rq.ord = ep->cm_info.ord;
p_mpa_ramrod->common.out_rq.ird = ep->cm_info.ird;
p_mpa_ramrod->tcp_cid = p_hwfn->hw_info.opaque_fid << 16 | ep->tcp_cid;
in_pdata_phys = ep->ep_buffer_phys +
OFFSETOF(struct ecore_iwarp_ep_memory, in_pdata);
p_mpa_ramrod->tcp_connect_side = ep->connect_mode;
p_mpa_ramrod->incoming_ulp_buffer.addr.hi =
DMA_HI_LE(in_pdata_phys);
p_mpa_ramrod->incoming_ulp_buffer.addr.lo =
DMA_LO_LE(in_pdata_phys);
p_mpa_ramrod->incoming_ulp_buffer.len =
OSAL_CPU_TO_LE16(sizeof(ep->ep_buffer_virt->in_pdata));
async_output_phys = ep->ep_buffer_phys +
OFFSETOF(struct ecore_iwarp_ep_memory, async_output);
p_mpa_ramrod->async_eqe_output_buf.hi =
DMA_HI_LE(async_output_phys);
p_mpa_ramrod->async_eqe_output_buf.lo =
DMA_LO_LE(async_output_phys);
p_mpa_ramrod->handle_for_async.hi = OSAL_CPU_TO_LE32(PTR_HI(ep));
p_mpa_ramrod->handle_for_async.lo = OSAL_CPU_TO_LE32(PTR_LO(ep));
if (!reject) {
p_mpa_ramrod->shared_queue_addr.hi =
DMA_HI_LE(qp->shared_queue_phys_addr);
p_mpa_ramrod->shared_queue_addr.lo =
DMA_LO_LE(qp->shared_queue_phys_addr);
p_mpa_ramrod->stats_counter_id =
RESC_START(p_hwfn, ECORE_RDMA_STATS_QUEUE) +
qp->stats_queue;
} else {
p_mpa_ramrod->common.reject = 1;
}
iwarp_info = &p_hwfn->p_rdma_info->iwarp;
p_mpa_ramrod->rcv_wnd = iwarp_info->rcv_wnd_size;
p_mpa_ramrod->mode = ep->mpa_rev;
SET_FIELD(p_mpa_ramrod->rtr_pref,
IWARP_MPA_OFFLOAD_RAMROD_DATA_RTR_SUPPORTED,
ep->rtr_type);
ep->state = ECORE_IWARP_EP_MPA_OFFLOADED;
rc = ecore_spq_post(p_hwfn, p_ent, OSAL_NULL);
if (!reject)
ep->cid = qp->icid; /* Now they're migrated. */
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA,
"QP(0x%x) EP(0x%x) MPA Offload rc = %d IRD=0x%x ORD=0x%x rtr_type=%d mpa_rev=%d reject=%d\n",
reject ? 0xffff : qp->icid, ep->tcp_cid, rc, ep->cm_info.ird,
ep->cm_info.ord, ep->rtr_type, ep->mpa_rev, reject);
return rc;
}
static void
ecore_iwarp_mpa_received(struct ecore_hwfn *p_hwfn,
struct ecore_iwarp_ep *ep)
{
struct ecore_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp;
struct ecore_iwarp_cm_event_params params;
struct mpa_v2_hdr *mpa_v2_params;
union async_output *async_data;
u16 mpa_ord, mpa_ird;
u8 mpa_hdr_size = 0;
u8 mpa_rev;
async_data = &ep->ep_buffer_virt->async_output;
mpa_rev = async_data->mpa_request.mpa_handshake_mode;
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA,
"private_data_len=%x handshake_mode=%x private_data=(%x)\n",
async_data->mpa_request.ulp_data_len,
mpa_rev,
*((u32 *)((u8 *)ep->ep_buffer_virt->in_pdata)));
if (ep->listener->state > ECORE_IWARP_LISTENER_STATE_UNPAUSE) {
/* MPA reject initiated by ecore */
OSAL_MEMSET(&ep->cm_info, 0, sizeof(ep->cm_info));
ep->event_cb = OSAL_NULL;
ecore_iwarp_mpa_offload(p_hwfn, ep);
return;
}
if (mpa_rev == MPA_NEGOTIATION_TYPE_ENHANCED) {
if (iwarp_info->mpa_rev == MPA_NEGOTIATION_TYPE_BASIC) {
DP_ERR(p_hwfn, "MPA_NEGOTIATE Received MPA rev 2 on driver supporting only MPA rev 1\n");
/* MPA_REV2 ToDo: close the tcp connection. */
return;
}
/* Read ord/ird values from private data buffer */
mpa_v2_params =
(struct mpa_v2_hdr *)(ep->ep_buffer_virt->in_pdata);
mpa_hdr_size = sizeof(*mpa_v2_params);
mpa_ord = ntohs(mpa_v2_params->ord);
mpa_ird = ntohs(mpa_v2_params->ird);
/* Temprary store in cm_info incoming ord/ird requested, later
* replace with negotiated value during accept
*/
ep->cm_info.ord = (u8)OSAL_MIN_T(u16,
(mpa_ord & MPA_V2_IRD_ORD_MASK),
ECORE_IWARP_ORD_DEFAULT);
ep->cm_info.ird = (u8)OSAL_MIN_T(u16,
(mpa_ird & MPA_V2_IRD_ORD_MASK),
ECORE_IWARP_IRD_DEFAULT);
/* Peer2Peer negotiation */
ep->rtr_type = MPA_RTR_TYPE_NONE;
if (mpa_ird & MPA_V2_PEER2PEER_MODEL) {
if (mpa_ord & MPA_V2_WRITE_RTR)
ep->rtr_type |= MPA_RTR_TYPE_ZERO_WRITE;
if (mpa_ord & MPA_V2_READ_RTR)
ep->rtr_type |= MPA_RTR_TYPE_ZERO_READ;
if (mpa_ird & MPA_V2_SEND_RTR)
ep->rtr_type |= MPA_RTR_TYPE_ZERO_SEND;
ep->rtr_type &= iwarp_info->rtr_type;
/* if we're left with no match send our capabilities */
if (ep->rtr_type == MPA_RTR_TYPE_NONE)
ep->rtr_type = iwarp_info->rtr_type;
/* prioritize write over send and read */
if (ep->rtr_type & MPA_RTR_TYPE_ZERO_WRITE)
ep->rtr_type = MPA_RTR_TYPE_ZERO_WRITE;
}
ep->mpa_rev = MPA_NEGOTIATION_TYPE_ENHANCED;
} else {
ep->cm_info.ord = ECORE_IWARP_ORD_DEFAULT;
ep->cm_info.ird = ECORE_IWARP_IRD_DEFAULT;
ep->mpa_rev = MPA_NEGOTIATION_TYPE_BASIC;
}
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA,
"MPA_NEGOTIATE (v%d): ORD: 0x%x IRD: 0x%x rtr:0x%x ulp_data_len = %x mpa_hdr_size = %x\n",
mpa_rev, ep->cm_info.ord, ep->cm_info.ird, ep->rtr_type,
async_data->mpa_request.ulp_data_len,
mpa_hdr_size);
/* Strip mpa v2 hdr from private data before sending to upper layer */
ep->cm_info.private_data =
ep->ep_buffer_virt->in_pdata + mpa_hdr_size;
ep->cm_info.private_data_len =
async_data->mpa_request.ulp_data_len - mpa_hdr_size;
params.event = ECORE_IWARP_EVENT_MPA_REQUEST;
params.cm_info = &ep->cm_info;
params.ep_context = ep;
params.status = ECORE_SUCCESS;
ep->state = ECORE_IWARP_EP_MPA_REQ_RCVD;
ep->event_cb(ep->cb_context, ¶ms);
}
static void
ecore_iwarp_move_to_ep_list(struct ecore_hwfn *p_hwfn,
osal_list_t *list, struct ecore_iwarp_ep *ep)
{
OSAL_SPIN_LOCK(&ep->listener->lock);
OSAL_LIST_REMOVE_ENTRY(&ep->list_entry, &ep->listener->ep_list);
OSAL_SPIN_UNLOCK(&ep->listener->lock);
OSAL_SPIN_LOCK(&p_hwfn->p_rdma_info->iwarp.iw_lock);
OSAL_LIST_PUSH_TAIL(&ep->list_entry, list);
OSAL_SPIN_UNLOCK(&p_hwfn->p_rdma_info->iwarp.iw_lock);
}
static void
ecore_iwarp_return_ep(struct ecore_hwfn *p_hwfn,
struct ecore_iwarp_ep *ep)
{
ep->state = ECORE_IWARP_EP_INIT;
if (ep->qp)
ep->qp->ep = OSAL_NULL;
ep->qp = OSAL_NULL;
OSAL_MEMSET(&ep->cm_info, 0, sizeof(ep->cm_info));
if (ep->tcp_cid == ECORE_IWARP_INVALID_TCP_CID) {
/* We don't care about the return code, it's ok if tcp_cid
* remains invalid...in this case we'll defer allocation
*/
ecore_iwarp_alloc_tcp_cid(p_hwfn, &ep->tcp_cid);
}
ecore_iwarp_move_to_ep_list(p_hwfn,
&p_hwfn->p_rdma_info->iwarp.ep_free_list,
ep);
}
static void
ecore_iwarp_parse_private_data(struct ecore_hwfn *p_hwfn,
struct ecore_iwarp_ep *ep)
{
struct mpa_v2_hdr *mpa_v2_params;
union async_output *async_data;
u16 mpa_ird, mpa_ord;
u8 mpa_data_size = 0;
if (MPA_REV2(p_hwfn->p_rdma_info->iwarp.mpa_rev)) {
mpa_v2_params = (struct mpa_v2_hdr *)
((u8 *)ep->ep_buffer_virt->in_pdata);
mpa_data_size = sizeof(*mpa_v2_params);
mpa_ird = ntohs(mpa_v2_params->ird);
mpa_ord = ntohs(mpa_v2_params->ord);
ep->cm_info.ird = (u8)(mpa_ord & MPA_V2_IRD_ORD_MASK);
ep->cm_info.ord = (u8)(mpa_ird & MPA_V2_IRD_ORD_MASK);
} /* else: Ord / Ird already configured */
async_data = &ep->ep_buffer_virt->async_output;
ep->cm_info.private_data = ep->ep_buffer_virt->in_pdata + mpa_data_size;
ep->cm_info.private_data_len =
async_data->mpa_response.ulp_data_len - mpa_data_size;
}
static void
ecore_iwarp_mpa_reply_arrived(struct ecore_hwfn *p_hwfn,
struct ecore_iwarp_ep *ep)
{
struct ecore_iwarp_cm_event_params params;
if (ep->connect_mode == TCP_CONNECT_PASSIVE) {
DP_NOTICE(p_hwfn, true, "MPA reply event not expected on passive side!\n");
return;
}
params.event = ECORE_IWARP_EVENT_ACTIVE_MPA_REPLY;
ecore_iwarp_parse_private_data(p_hwfn, ep);
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA,
"MPA_NEGOTIATE (v%d): ORD: 0x%x IRD: 0x%x\n",
ep->mpa_rev, ep->cm_info.ord, ep->cm_info.ird);
params.cm_info = &ep->cm_info;
params.ep_context = ep;
params.status = ECORE_SUCCESS;
ep->mpa_reply_processed = true;
ep->event_cb(ep->cb_context, ¶ms);
}
#define ECORE_IWARP_CONNECT_MODE_STRING(ep) \
(ep->connect_mode == TCP_CONNECT_PASSIVE) ? "Passive" : "Active"
/* Called as a result of the event:
* IWARP_EVENT_TYPE_ASYNC_MPA_HANDSHAKE_COMPLETE
*/
static void
ecore_iwarp_mpa_complete(struct ecore_hwfn *p_hwfn,
struct ecore_iwarp_ep *ep,
u8 fw_return_code)
{
struct ecore_iwarp_cm_event_params params;
if (ep->connect_mode == TCP_CONNECT_ACTIVE)
params.event = ECORE_IWARP_EVENT_ACTIVE_COMPLETE;
else
params.event = ECORE_IWARP_EVENT_PASSIVE_COMPLETE;
if (ep->connect_mode == TCP_CONNECT_ACTIVE &&
!ep->mpa_reply_processed) {
ecore_iwarp_parse_private_data(p_hwfn, ep);
}
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA,
"MPA_NEGOTIATE (v%d): ORD: 0x%x IRD: 0x%x\n",
ep->mpa_rev, ep->cm_info.ord, ep->cm_info.ird);
params.cm_info = &ep->cm_info;
params.ep_context = ep;
if ((ep->connect_mode == TCP_CONNECT_PASSIVE) &&
(ep->state != ECORE_IWARP_EP_MPA_OFFLOADED)) {
/* This is a FW bug. Shouldn't get complete without offload */
DP_NOTICE(p_hwfn, false, "%s(0x%x) ERROR: Got MPA complete without MPA offload fw_return_code=%d ep->state=%d\n",
ECORE_IWARP_CONNECT_MODE_STRING(ep), ep->tcp_cid,
fw_return_code, ep->state);
ep->state = ECORE_IWARP_EP_CLOSED;
return;
}
if ((ep->connect_mode == TCP_CONNECT_PASSIVE) &&
(ep->state == ECORE_IWARP_EP_ABORTING))
return;
ep->state = ECORE_IWARP_EP_CLOSED;
switch (fw_return_code) {
case RDMA_RETURN_OK:
ep->qp->max_rd_atomic_req = ep->cm_info.ord;
ep->qp->max_rd_atomic_resp = ep->cm_info.ird;
ecore_iwarp_modify_qp(p_hwfn, ep->qp,
ECORE_IWARP_QP_STATE_RTS,
1);
ep->state = ECORE_IWARP_EP_ESTABLISHED;
params.status = ECORE_SUCCESS;
break;
case IWARP_CONN_ERROR_MPA_TIMEOUT:
DP_NOTICE(p_hwfn, false, "%s(0x%x) MPA timeout\n",
ECORE_IWARP_CONNECT_MODE_STRING(ep), ep->cid);
params.status = ECORE_TIMEOUT;
break;
case IWARP_CONN_ERROR_MPA_ERROR_REJECT:
DP_NOTICE(p_hwfn, false, "%s(0x%x) MPA Reject\n",
ECORE_IWARP_CONNECT_MODE_STRING(ep), ep->cid);
params.status = ECORE_CONN_REFUSED;
break;
case IWARP_CONN_ERROR_MPA_RST:
DP_NOTICE(p_hwfn, false, "%s(0x%x) MPA reset(tcp cid: 0x%x)\n",
ECORE_IWARP_CONNECT_MODE_STRING(ep), ep->cid,
ep->tcp_cid);
params.status = ECORE_CONN_RESET;
break;
case IWARP_CONN_ERROR_MPA_FIN:
DP_NOTICE(p_hwfn, false, "%s(0x%x) MPA received FIN\n",
ECORE_IWARP_CONNECT_MODE_STRING(ep), ep->cid);
params.status = ECORE_CONN_REFUSED;
break;
case IWARP_CONN_ERROR_MPA_INSUF_IRD:
DP_NOTICE(p_hwfn, false, "%s(0x%x) MPA insufficient ird\n",
ECORE_IWARP_CONNECT_MODE_STRING(ep), ep->cid);
params.status = ECORE_CONN_REFUSED;
break;
case IWARP_CONN_ERROR_MPA_RTR_MISMATCH:
DP_NOTICE(p_hwfn, false, "%s(0x%x) MPA RTR MISMATCH\n",
ECORE_IWARP_CONNECT_MODE_STRING(ep), ep->cid);
params.status = ECORE_CONN_REFUSED;
break;
case IWARP_CONN_ERROR_MPA_INVALID_PACKET:
DP_NOTICE(p_hwfn, false, "%s(0x%x) MPA Invalid Packet\n",
ECORE_IWARP_CONNECT_MODE_STRING(ep), ep->cid);
params.status = ECORE_CONN_REFUSED;
break;
case IWARP_CONN_ERROR_MPA_LOCAL_ERROR:
DP_NOTICE(p_hwfn, false, "%s(0x%x) MPA Local Error\n",
ECORE_IWARP_CONNECT_MODE_STRING(ep), ep->cid);
params.status = ECORE_CONN_REFUSED;
break;
case IWARP_CONN_ERROR_MPA_TERMINATE:
DP_NOTICE(p_hwfn, false, "%s(0x%x) MPA TERMINATE\n",
ECORE_IWARP_CONNECT_MODE_STRING(ep), ep->cid);
params.status = ECORE_CONN_REFUSED;
break;
default:
params.status = ECORE_CONN_RESET;
break;
}
if (ep->event_cb)
ep->event_cb(ep->cb_context, ¶ms);
/* on passive side, if there is no associated QP (REJECT) we need to
* return the ep to the pool, otherwise we wait for QP to release it.
* Since we add an element in accept instead of this one. in anycase
* we need to remove it from the ep_list (active connections)...
*/
if (fw_return_code != RDMA_RETURN_OK) {
ep->tcp_cid = ECORE_IWARP_INVALID_TCP_CID;
if ((ep->connect_mode == TCP_CONNECT_PASSIVE) &&
(ep->qp == OSAL_NULL)) { /* Rejected */
ecore_iwarp_return_ep(p_hwfn, ep);
} else {
OSAL_SPIN_LOCK(&p_hwfn->p_rdma_info->iwarp.iw_lock);
OSAL_LIST_REMOVE_ENTRY(
&ep->list_entry,
&p_hwfn->p_rdma_info->iwarp.ep_list);
OSAL_SPIN_UNLOCK(&p_hwfn->p_rdma_info->iwarp.iw_lock);
}
}
}
static void
ecore_iwarp_mpa_v2_set_private(struct ecore_hwfn *p_hwfn,
struct ecore_iwarp_ep *ep,
u8 *mpa_data_size)
{
struct mpa_v2_hdr *mpa_v2_params;
u16 mpa_ird, mpa_ord;
*mpa_data_size = 0;
if (MPA_REV2(ep->mpa_rev)) {
mpa_v2_params =
(struct mpa_v2_hdr *)ep->ep_buffer_virt->out_pdata;
*mpa_data_size = sizeof(*mpa_v2_params);
mpa_ird = (u16)ep->cm_info.ird;
mpa_ord = (u16)ep->cm_info.ord;
if (ep->rtr_type != MPA_RTR_TYPE_NONE) {
mpa_ird |= MPA_V2_PEER2PEER_MODEL;
if (ep->rtr_type & MPA_RTR_TYPE_ZERO_SEND)
mpa_ird |= MPA_V2_SEND_RTR;
if (ep->rtr_type & MPA_RTR_TYPE_ZERO_WRITE)
mpa_ord |= MPA_V2_WRITE_RTR;
if (ep->rtr_type & MPA_RTR_TYPE_ZERO_READ)
mpa_ord |= MPA_V2_READ_RTR;
}
mpa_v2_params->ird = htons(mpa_ird);
mpa_v2_params->ord = htons(mpa_ord);
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA,
"MPA_NEGOTIATE Header: [%x ord:%x ird] %x ord:%x ird:%x peer2peer:%x rtr_send:%x rtr_write:%x rtr_read:%x\n",
mpa_v2_params->ird,
mpa_v2_params->ord,
*((u32 *)mpa_v2_params),
mpa_ord & MPA_V2_IRD_ORD_MASK,
mpa_ird & MPA_V2_IRD_ORD_MASK,
!!(mpa_ird & MPA_V2_PEER2PEER_MODEL),
!!(mpa_ird & MPA_V2_SEND_RTR),
!!(mpa_ord & MPA_V2_WRITE_RTR),
!!(mpa_ord & MPA_V2_READ_RTR));
}
}
enum _ecore_status_t
ecore_iwarp_connect(void *rdma_cxt,
struct ecore_iwarp_connect_in *iparams,
struct ecore_iwarp_connect_out *oparams)
{
struct ecore_hwfn *p_hwfn = (struct ecore_hwfn *)rdma_cxt;
struct ecore_iwarp_info *iwarp_info;
struct ecore_iwarp_ep *ep;
enum _ecore_status_t rc;
u8 mpa_data_size = 0;
u8 ts_hdr_size = 0;
u32 cid;
if ((iparams->cm_info.ord > ECORE_IWARP_ORD_DEFAULT) ||
(iparams->cm_info.ird > ECORE_IWARP_IRD_DEFAULT)) {
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA,
"QP(0x%x) ERROR: Invalid ord(0x%x)/ird(0x%x)\n",
iparams->qp->icid, iparams->cm_info.ord,
iparams->cm_info.ird);
return ECORE_INVAL;
}
iwarp_info = &p_hwfn->p_rdma_info->iwarp;
/* Allocate ep object */
rc = ecore_iwarp_alloc_cid(p_hwfn, &cid);
if (rc != ECORE_SUCCESS)
return rc;
if (iparams->qp->ep == OSAL_NULL) {
rc = ecore_iwarp_create_ep(p_hwfn, &ep);
if (rc != ECORE_SUCCESS)
return rc;
} else {
ep = iparams->qp->ep;
DP_ERR(p_hwfn, "Note re-use of QP for different connect\n");
ep->state = ECORE_IWARP_EP_INIT;
}
ep->tcp_cid = cid;
OSAL_SPIN_LOCK(&p_hwfn->p_rdma_info->iwarp.iw_lock);
OSAL_LIST_PUSH_TAIL(&ep->list_entry,
&p_hwfn->p_rdma_info->iwarp.ep_list);
OSAL_SPIN_UNLOCK(&p_hwfn->p_rdma_info->iwarp.iw_lock);
ep->qp = iparams->qp;
ep->qp->ep = ep;
OSAL_MEMCPY(ep->remote_mac_addr,
iparams->remote_mac_addr,
ETH_ALEN);
OSAL_MEMCPY(ep->local_mac_addr,
iparams->local_mac_addr,
ETH_ALEN);
OSAL_MEMCPY(&ep->cm_info, &iparams->cm_info, sizeof(ep->cm_info));
ep->cm_info.ord = iparams->cm_info.ord;
ep->cm_info.ird = iparams->cm_info.ird;
ep->rtr_type = iwarp_info->rtr_type;
if (iwarp_info->peer2peer == 0)
ep->rtr_type = MPA_RTR_TYPE_NONE;
if ((ep->rtr_type & MPA_RTR_TYPE_ZERO_READ) &&
(ep->cm_info.ord == 0))
ep->cm_info.ord = 1;
ep->mpa_rev = iwarp_info->mpa_rev;
ecore_iwarp_mpa_v2_set_private(p_hwfn, ep, &mpa_data_size);
ep->cm_info.private_data = (u8 *)ep->ep_buffer_virt->out_pdata;
ep->cm_info.private_data_len =
iparams->cm_info.private_data_len + mpa_data_size;
OSAL_MEMCPY((u8 *)(u8 *)ep->ep_buffer_virt->out_pdata + mpa_data_size,
iparams->cm_info.private_data,
iparams->cm_info.private_data_len);
if (p_hwfn->p_rdma_info->iwarp.tcp_flags & ECORE_IWARP_TS_EN)
ts_hdr_size = TIMESTAMP_HEADER_SIZE;
ep->mss = iparams->mss - ts_hdr_size;
ep->mss = OSAL_MIN_T(u16, ECORE_IWARP_MAX_FW_MSS, ep->mss);
ep->event_cb = iparams->event_cb;
ep->cb_context = iparams->cb_context;
ep->connect_mode = TCP_CONNECT_ACTIVE;
oparams->ep_context = ep;
rc = ecore_iwarp_tcp_offload(p_hwfn, ep);
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA, "QP(0x%x) EP(0x%x) rc = %d\n",
iparams->qp->icid, ep->tcp_cid, rc);
if (rc != ECORE_SUCCESS)
ecore_iwarp_destroy_ep(p_hwfn, ep, true);
return rc;
}
static struct ecore_iwarp_ep *
ecore_iwarp_get_free_ep(struct ecore_hwfn *p_hwfn)
{
struct ecore_iwarp_ep *ep = OSAL_NULL;
enum _ecore_status_t rc;
OSAL_SPIN_LOCK(&p_hwfn->p_rdma_info->iwarp.iw_lock);
if (OSAL_LIST_IS_EMPTY(&p_hwfn->p_rdma_info->iwarp.ep_free_list)) {
DP_ERR(p_hwfn, "Ep list is empty\n");
goto out;
}
ep = OSAL_LIST_FIRST_ENTRY(&p_hwfn->p_rdma_info->iwarp.ep_free_list,
struct ecore_iwarp_ep,
list_entry);
/* in some cases we could have failed allocating a tcp cid when added
* from accept / failure... retry now..this is not the common case.
*/
if (ep->tcp_cid == ECORE_IWARP_INVALID_TCP_CID) {
rc = ecore_iwarp_alloc_tcp_cid(p_hwfn, &ep->tcp_cid);
/* if we fail we could look for another entry with a valid
* tcp_cid, but since we don't expect to reach this anyway
* it's not worth the handling
*/
if (rc) {
ep->tcp_cid = ECORE_IWARP_INVALID_TCP_CID;
ep = OSAL_NULL;
goto out;
}
}
OSAL_LIST_REMOVE_ENTRY(&ep->list_entry,
&p_hwfn->p_rdma_info->iwarp.ep_free_list);
out:
OSAL_SPIN_UNLOCK(&p_hwfn->p_rdma_info->iwarp.iw_lock);
return ep;
}
/* takes into account timer scan ~20 ms and interrupt/dpc overhead */
#define ECORE_IWARP_MAX_CID_CLEAN_TIME 100
/* Technically we shouldn't reach this count with 100 ms iteration sleep */
#define ECORE_IWARP_MAX_NO_PROGRESS_CNT 5
/* This function waits for all the bits of a bmap to be cleared, as long as
* there is progress ( i.e. the number of bits left to be cleared decreases )
* the function continues.
*/
static enum _ecore_status_t
ecore_iwarp_wait_cid_map_cleared(struct ecore_hwfn *p_hwfn,
struct ecore_bmap *bmap)
{
int prev_weight = 0;
int wait_count = 0;
int weight = 0;
weight = OSAL_BITMAP_WEIGHT(bmap->bitmap, bmap->max_count);
prev_weight = weight;
while (weight) {
OSAL_MSLEEP(ECORE_IWARP_MAX_CID_CLEAN_TIME);
weight = OSAL_BITMAP_WEIGHT(bmap->bitmap, bmap->max_count);
if (prev_weight == weight) {
wait_count++;
} else {
prev_weight = weight;
wait_count = 0;
}
if (wait_count > ECORE_IWARP_MAX_NO_PROGRESS_CNT) {
DP_NOTICE(p_hwfn, false,
"%s bitmap wait timed out (%d cids pending)\n",
bmap->name, weight);
return ECORE_TIMEOUT;
}
}
return ECORE_SUCCESS;
}
static enum _ecore_status_t
ecore_iwarp_wait_for_all_cids(struct ecore_hwfn *p_hwfn)
{
enum _ecore_status_t rc;
int i;
rc = ecore_iwarp_wait_cid_map_cleared(
p_hwfn, &p_hwfn->p_rdma_info->tcp_cid_map);
if (rc)
return rc;
/* Now free the tcp cids from the main cid map */
for (i = 0; i < ECORE_IWARP_PREALLOC_CNT; i++) {
ecore_bmap_release_id(p_hwfn,
&p_hwfn->p_rdma_info->cid_map,
i);
}
/* Now wait for all cids to be completed */
rc = ecore_iwarp_wait_cid_map_cleared(
p_hwfn, &p_hwfn->p_rdma_info->cid_map);
return rc;
}
static void
ecore_iwarp_free_prealloc_ep(struct ecore_hwfn *p_hwfn)
{
struct ecore_iwarp_ep *ep;
u32 cid;
while (!OSAL_LIST_IS_EMPTY(&p_hwfn->p_rdma_info->iwarp.ep_free_list)) {
OSAL_SPIN_LOCK(&p_hwfn->p_rdma_info->iwarp.iw_lock);
ep = OSAL_LIST_FIRST_ENTRY(
&p_hwfn->p_rdma_info->iwarp.ep_free_list,
struct ecore_iwarp_ep, list_entry);
if (ep == OSAL_NULL) {
OSAL_SPIN_UNLOCK(&p_hwfn->p_rdma_info->iwarp.iw_lock);
break;
}
#ifdef _NTDDK_
#pragma warning(suppress : 6011)
#endif
OSAL_LIST_REMOVE_ENTRY(
&ep->list_entry,
&p_hwfn->p_rdma_info->iwarp.ep_free_list);
OSAL_SPIN_UNLOCK(&p_hwfn->p_rdma_info->iwarp.iw_lock);
if (ep->tcp_cid != ECORE_IWARP_INVALID_TCP_CID) {
cid = ep->tcp_cid - ecore_cxt_get_proto_cid_start(
p_hwfn, p_hwfn->p_rdma_info->proto);
OSAL_SPIN_LOCK(&p_hwfn->p_rdma_info->lock);
ecore_bmap_release_id(p_hwfn,
&p_hwfn->p_rdma_info->tcp_cid_map,
cid);
OSAL_SPIN_UNLOCK(&p_hwfn->p_rdma_info->lock);
}
ecore_iwarp_destroy_ep(p_hwfn, ep, false);
}
}
static enum _ecore_status_t
ecore_iwarp_prealloc_ep(struct ecore_hwfn *p_hwfn, bool init)
{
struct ecore_iwarp_ep *ep;
int rc = ECORE_SUCCESS;
u32 cid;
int count;
int i;
if (init)
count = ECORE_IWARP_PREALLOC_CNT;
else
count = 1;
for (i = 0; i < count; i++) {
rc = ecore_iwarp_create_ep(p_hwfn, &ep);
if (rc != ECORE_SUCCESS)
return rc;
/* During initialization we allocate from the main pool,
* afterwards we allocate only from the tcp_cid.
*/
if (init) {
rc = ecore_iwarp_alloc_cid(p_hwfn, &cid);
if (rc != ECORE_SUCCESS)
goto err;
ecore_iwarp_set_tcp_cid(p_hwfn, cid);
} else {
/* We don't care about the return code, it's ok if
* tcp_cid remains invalid...in this case we'll
* defer allocation
*/
ecore_iwarp_alloc_tcp_cid(p_hwfn, &cid);
}
ep->tcp_cid = cid;
OSAL_SPIN_LOCK(&p_hwfn->p_rdma_info->iwarp.iw_lock);
OSAL_LIST_PUSH_TAIL(&ep->list_entry,
&p_hwfn->p_rdma_info->iwarp.ep_free_list);
OSAL_SPIN_UNLOCK(&p_hwfn->p_rdma_info->iwarp.iw_lock);
}
return rc;
err:
ecore_iwarp_destroy_ep(p_hwfn, ep, false);
return rc;
}
enum _ecore_status_t
ecore_iwarp_alloc(struct ecore_hwfn *p_hwfn)
{
enum _ecore_status_t rc;
#ifdef CONFIG_ECORE_LOCK_ALLOC
OSAL_SPIN_LOCK_ALLOC(p_hwfn, &p_hwfn->p_rdma_info->iwarp.iw_lock);
OSAL_SPIN_LOCK_ALLOC(p_hwfn, &p_hwfn->p_rdma_info->iwarp.qp_lock);
#endif
OSAL_SPIN_LOCK_INIT(&p_hwfn->p_rdma_info->iwarp.iw_lock);
OSAL_SPIN_LOCK_INIT(&p_hwfn->p_rdma_info->iwarp.qp_lock);
/* Allocate bitmap for tcp cid. These are used by passive side
* to ensure it can allocate a tcp cid during dpc that was
* pre-acquired and doesn't require dynamic allocation of ilt
*/
rc = ecore_rdma_bmap_alloc(p_hwfn, &p_hwfn->p_rdma_info->tcp_cid_map,
ECORE_IWARP_PREALLOC_CNT,
"TCP_CID");
if (rc != ECORE_SUCCESS) {
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA,
"Failed to allocate tcp cid, rc = %d\n",
rc);
return rc;
}
OSAL_LIST_INIT(&p_hwfn->p_rdma_info->iwarp.ep_free_list);
//DAVIDS OSAL_SPIN_LOCK_INIT(&p_hwfn->p_rdma_info->iwarp.iw_lock);
rc = ecore_iwarp_prealloc_ep(p_hwfn, true);
if (rc != ECORE_SUCCESS) {
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA,
"ecore_iwarp_prealloc_ep failed, rc = %d\n",
rc);
return rc;
}
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA,
"ecore_iwarp_prealloc_ep success, rc = %d\n",
rc);
return ecore_ooo_alloc(p_hwfn);
}
void
ecore_iwarp_resc_free(struct ecore_hwfn *p_hwfn)
{
struct ecore_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp;
#ifdef CONFIG_ECORE_LOCK_ALLOC
OSAL_SPIN_LOCK_DEALLOC(iwarp_info->iw_lock);
OSAL_SPIN_LOCK_DEALLOC(iwarp_info->qp_lock);
#endif
ecore_ooo_free(p_hwfn);
if (iwarp_info->partial_fpdus)
OSAL_FREE(p_hwfn->p_dev, iwarp_info->partial_fpdus);
if (iwarp_info->mpa_bufs)
OSAL_FREE(p_hwfn->p_dev, iwarp_info->mpa_bufs);
if (iwarp_info->mpa_intermediate_buf)
OSAL_FREE(p_hwfn->p_dev, iwarp_info->mpa_intermediate_buf);
ecore_rdma_bmap_free(p_hwfn, &p_hwfn->p_rdma_info->tcp_cid_map, 1);
}
enum _ecore_status_t
ecore_iwarp_accept(void *rdma_cxt,
struct ecore_iwarp_accept_in *iparams)
{
struct ecore_hwfn *p_hwfn = (struct ecore_hwfn *)rdma_cxt;
struct ecore_iwarp_ep *ep;
u8 mpa_data_size = 0;
enum _ecore_status_t rc;
ep = (struct ecore_iwarp_ep *)iparams->ep_context;
if (!ep) {
DP_ERR(p_hwfn, "Ep Context receive in accept is NULL\n");
return ECORE_INVAL;
}
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA, "QP(0x%x) EP(0x%x)\n",
iparams->qp->icid, ep->tcp_cid);
if ((iparams->ord > ECORE_IWARP_ORD_DEFAULT) ||
(iparams->ird > ECORE_IWARP_IRD_DEFAULT)) {
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA,
"QP(0x%x) EP(0x%x) ERROR: Invalid ord(0x%x)/ird(0x%x)\n",
iparams->qp->icid, ep->tcp_cid,
iparams->ord, iparams->ord);
return ECORE_INVAL;
}
/* We could reach qp->ep != OSAL NULL if we do accept on the same qp */
if (iparams->qp->ep == OSAL_NULL) {
/* We need to add a replacement for the ep to the free list */
ecore_iwarp_prealloc_ep(p_hwfn, false);
} else {
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA,
"Note re-use of QP for different connect\n");
/* Return the old ep to the free_pool */
ecore_iwarp_return_ep(p_hwfn, iparams->qp->ep);
}
ecore_iwarp_move_to_ep_list(p_hwfn,
&p_hwfn->p_rdma_info->iwarp.ep_list,
ep);
ep->listener = OSAL_NULL;
ep->cb_context = iparams->cb_context;
ep->qp = iparams->qp;
ep->qp->ep = ep;
if (ep->mpa_rev == MPA_NEGOTIATION_TYPE_ENHANCED) {
/* Negotiate ord/ird: if upperlayer requested ord larger than
* ird advertised by remote, we need to decrease our ord
* to match remote ord
*/
if (iparams->ord > ep->cm_info.ird) {
iparams->ord = ep->cm_info.ird;
}
/* For chelsio compatability, if rtr_zero read is requested
* we can't set ird to zero
*/
if ((ep->rtr_type & MPA_RTR_TYPE_ZERO_READ) &&
(iparams->ird == 0))
iparams->ird = 1;
}
/* Update cm_info ord/ird to be negotiated values */
ep->cm_info.ord = iparams->ord;
ep->cm_info.ird = iparams->ird;
ecore_iwarp_mpa_v2_set_private(p_hwfn, ep, &mpa_data_size);
ep->cm_info.private_data = ep->ep_buffer_virt->out_pdata;
ep->cm_info.private_data_len =
iparams->private_data_len + mpa_data_size;
OSAL_MEMCPY((u8 *)ep->ep_buffer_virt->out_pdata + mpa_data_size,
iparams->private_data,
iparams->private_data_len);
if (ep->state == ECORE_IWARP_EP_CLOSED) {
DP_NOTICE(p_hwfn, false,
"(0x%x) Accept called on EP in CLOSED state\n",
ep->tcp_cid);
ep->tcp_cid = ECORE_IWARP_INVALID_TCP_CID;
ecore_iwarp_return_ep(p_hwfn, ep);
return ECORE_CONN_RESET;
}
rc = ecore_iwarp_mpa_offload(p_hwfn, ep);
if (rc) {
ecore_iwarp_modify_qp(p_hwfn,
iparams->qp,
ECORE_IWARP_QP_STATE_ERROR,
1);
}
return rc;
}
enum _ecore_status_t
ecore_iwarp_reject(void *rdma_cxt,
struct ecore_iwarp_reject_in *iparams)
{
struct ecore_hwfn *p_hwfn = (struct ecore_hwfn *)rdma_cxt;
struct ecore_iwarp_ep *ep;
u8 mpa_data_size = 0;
enum _ecore_status_t rc;
ep = (struct ecore_iwarp_ep *)iparams->ep_context;
if (!ep) {
DP_ERR(p_hwfn, "Ep Context receive in reject is NULL\n");
return ECORE_INVAL;
}
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA, "EP(0x%x)\n", ep->tcp_cid);
ep->cb_context = iparams->cb_context;
ep->qp = OSAL_NULL;
ecore_iwarp_mpa_v2_set_private(p_hwfn, ep, &mpa_data_size);
ep->cm_info.private_data = ep->ep_buffer_virt->out_pdata;
ep->cm_info.private_data_len =
iparams->private_data_len + mpa_data_size;
OSAL_MEMCPY((u8 *)ep->ep_buffer_virt->out_pdata + mpa_data_size,
iparams->private_data,
iparams->private_data_len);
if (ep->state == ECORE_IWARP_EP_CLOSED) {
DP_NOTICE(p_hwfn, false,
"(0x%x) Reject called on EP in CLOSED state\n",
ep->tcp_cid);
ep->tcp_cid = ECORE_IWARP_INVALID_TCP_CID;
ecore_iwarp_return_ep(p_hwfn, ep);
return ECORE_CONN_RESET;
}
rc = ecore_iwarp_mpa_offload(p_hwfn, ep);
return rc;
}
static void
ecore_iwarp_print_cm_info(struct ecore_hwfn *p_hwfn,
struct ecore_iwarp_cm_info *cm_info)
{
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA, "ip_version = %d\n",
cm_info->ip_version);
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA, "remote_ip %x.%x.%x.%x\n",
cm_info->remote_ip[0],
cm_info->remote_ip[1],
cm_info->remote_ip[2],
cm_info->remote_ip[3]);
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA, "local_ip %x.%x.%x.%x\n",
cm_info->local_ip[0],
cm_info->local_ip[1],
cm_info->local_ip[2],
cm_info->local_ip[3]);
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA, "remote_port = %x\n",
cm_info->remote_port);
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA, "local_port = %x\n",
cm_info->local_port);
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA, "vlan = %x\n",
cm_info->vlan);
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA, "private_data_len = %x\n",
cm_info->private_data_len);
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA, "ord = %d\n",
cm_info->ord);
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA, "ird = %d\n",
cm_info->ird);
}
static int
ecore_iwarp_ll2_post_rx(struct ecore_hwfn *p_hwfn,
struct ecore_iwarp_ll2_buff *buf,
u8 handle)
{
enum _ecore_status_t rc;
rc = ecore_ll2_post_rx_buffer(
p_hwfn,
handle,
buf->data_phys_addr,
(u16)buf->buff_size,
buf, 1);
if (rc) {
DP_NOTICE(p_hwfn, false,
"Failed to repost rx buffer to ll2 rc = %d, handle=%d\n",
rc, handle);
OSAL_DMA_FREE_COHERENT(
p_hwfn->p_dev,
buf->data,
buf->data_phys_addr,
buf->buff_size);
OSAL_FREE(p_hwfn->p_dev, buf);
}
return rc;
}
static bool
ecore_iwarp_ep_exists(struct ecore_hwfn *p_hwfn,
struct ecore_iwarp_listener *listener,
struct ecore_iwarp_cm_info *cm_info)
{
struct ecore_iwarp_ep *ep = OSAL_NULL;
bool found = false;
OSAL_SPIN_LOCK(&listener->lock);
OSAL_LIST_FOR_EACH_ENTRY(ep, &listener->ep_list,
list_entry, struct ecore_iwarp_ep) {
if ((ep->cm_info.local_port == cm_info->local_port) &&
(ep->cm_info.remote_port == cm_info->remote_port) &&
(ep->cm_info.vlan == cm_info->vlan) &&
!OSAL_MEMCMP(&(ep->cm_info.local_ip), cm_info->local_ip,
sizeof(cm_info->local_ip)) &&
!OSAL_MEMCMP(&(ep->cm_info.remote_ip), cm_info->remote_ip,
sizeof(cm_info->remote_ip))) {
found = true;
break;
}
}
OSAL_SPIN_UNLOCK(&listener->lock);
if (found) {
DP_NOTICE(p_hwfn, false, "SYN received on active connection - dropping\n");
ecore_iwarp_print_cm_info(p_hwfn, cm_info);
return true;
}
return false;
}
static struct ecore_iwarp_listener *
ecore_iwarp_get_listener(struct ecore_hwfn *p_hwfn,
struct ecore_iwarp_cm_info *cm_info)
{
struct ecore_iwarp_listener *listener = OSAL_NULL;
static const u32 ip_zero[4] = {0, 0, 0, 0};
bool found = false;
ecore_iwarp_print_cm_info(p_hwfn, cm_info);
OSAL_LIST_FOR_EACH_ENTRY(listener,
&p_hwfn->p_rdma_info->iwarp.listen_list,
list_entry, struct ecore_iwarp_listener) {
if (listener->port == cm_info->local_port) {
/* Any IP (i.e. 0.0.0.0 ) will be treated as any vlan */
if (!OSAL_MEMCMP(listener->ip_addr,
ip_zero,
sizeof(ip_zero))) {
found = true;
break;
}
/* If not any IP -> check vlan as well */
if (!OSAL_MEMCMP(listener->ip_addr,
cm_info->local_ip,
sizeof(cm_info->local_ip)) &&
(listener->vlan == cm_info->vlan)) {
found = true;
break;
}
}
}
if (found && listener->state == ECORE_IWARP_LISTENER_STATE_ACTIVE) {
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA, "listener found = %p\n",
listener);
return listener;
}
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA, "listener not found\n");
return OSAL_NULL;
}
static enum _ecore_status_t
ecore_iwarp_parse_rx_pkt(struct ecore_hwfn *p_hwfn,
struct ecore_iwarp_cm_info *cm_info,
void *buf,
u8 *remote_mac_addr,
u8 *local_mac_addr,
int *payload_len,
int *tcp_start_offset)
{
struct ecore_vlan_ethhdr *vethh;
struct ecore_ethhdr *ethh;
struct ecore_iphdr *iph;
struct ecore_ipv6hdr *ip6h;
struct ecore_tcphdr *tcph;
bool vlan_valid = false;
int eth_hlen, ip_hlen;
u16 eth_type;
int i;
ethh = (struct ecore_ethhdr *)buf;
eth_type = ntohs(ethh->h_proto);
if (eth_type == ETH_P_8021Q) {
vlan_valid = true;
vethh = (struct ecore_vlan_ethhdr *)ethh;
cm_info->vlan = ntohs(vethh->h_vlan_TCI) & VLAN_VID_MASK;
eth_type = ntohs(vethh->h_vlan_encapsulated_proto);
}
eth_hlen = ETH_HLEN + (vlan_valid ? sizeof(u32) : 0);
OSAL_MEMCPY(remote_mac_addr,
ethh->h_source,
ETH_ALEN);
OSAL_MEMCPY(local_mac_addr,
ethh->h_dest,
ETH_ALEN);
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA, "eth_type =%d Source mac: [0x%x]:[0x%x]:[0x%x]:[0x%x]:[0x%x]:[0x%x]\n",
eth_type, ethh->h_source[0], ethh->h_source[1],
ethh->h_source[2], ethh->h_source[3],
ethh->h_source[4], ethh->h_source[5]);
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA, "eth_hlen=%d destination mac: [0x%x]:[0x%x]:[0x%x]:[0x%x]:[0x%x]:[0x%x]\n",
eth_hlen, ethh->h_dest[0], ethh->h_dest[1],
ethh->h_dest[2], ethh->h_dest[3],
ethh->h_dest[4], ethh->h_dest[5]);
iph = (struct ecore_iphdr *)((u8 *)(ethh) + eth_hlen);
if (eth_type == ETH_P_IP) {
if (iph->protocol != IPPROTO_TCP) {
DP_NOTICE(p_hwfn, false,
"Unexpected ip protocol on ll2 %x\n",
iph->protocol);
return ECORE_INVAL;
}
cm_info->local_ip[0] = ntohl(iph->daddr);
cm_info->remote_ip[0] = ntohl(iph->saddr);
cm_info->ip_version = (enum ecore_tcp_ip_version)TCP_IPV4;
ip_hlen = (iph->ihl)*sizeof(u32);
*payload_len = ntohs(iph->tot_len) - ip_hlen;
} else if (eth_type == ETH_P_IPV6) {
ip6h = (struct ecore_ipv6hdr *)iph;
if (ip6h->nexthdr != IPPROTO_TCP) {
DP_NOTICE(p_hwfn, false,
"Unexpected ip protocol on ll2 %x\n",
iph->protocol);
return ECORE_INVAL;
}
for (i = 0; i < 4; i++) {
cm_info->local_ip[i] =
ntohl(ip6h->daddr.in6_u.u6_addr32[i]);
cm_info->remote_ip[i] =
ntohl(ip6h->saddr.in6_u.u6_addr32[i]);
}
cm_info->ip_version = (enum ecore_tcp_ip_version)TCP_IPV6;
ip_hlen = sizeof(*ip6h);
*payload_len = ntohs(ip6h->payload_len);
} else {
DP_NOTICE(p_hwfn, false,
"Unexpected ethertype on ll2 %x\n", eth_type);
return ECORE_INVAL;
}
tcph = (struct ecore_tcphdr *)((u8 *)iph + ip_hlen);
if (!tcph->syn) {
DP_NOTICE(p_hwfn, false,
"Only SYN type packet expected on this ll2 conn, iph->ihl=%d source=%d dest=%d\n",
iph->ihl, tcph->source, tcph->dest);
return ECORE_INVAL;
}
cm_info->local_port = ntohs(tcph->dest);
cm_info->remote_port = ntohs(tcph->source);
ecore_iwarp_print_cm_info(p_hwfn, cm_info);
*tcp_start_offset = eth_hlen + ip_hlen;
return ECORE_SUCCESS;
}
static struct ecore_iwarp_fpdu *
ecore_iwarp_get_curr_fpdu(struct ecore_hwfn *p_hwfn, u16 cid)
{
struct ecore_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp;
struct ecore_iwarp_fpdu *partial_fpdu;
u32 idx = cid - ecore_cxt_get_proto_cid_start(p_hwfn, PROTOCOLID_IWARP);
if (idx >= iwarp_info->max_num_partial_fpdus) {
DP_ERR(p_hwfn, "Invalid cid %x max_num_partial_fpdus=%x\n", cid,
iwarp_info->max_num_partial_fpdus);
return OSAL_NULL;
}
partial_fpdu = &iwarp_info->partial_fpdus[idx];
return partial_fpdu;
}
enum ecore_iwarp_mpa_pkt_type {
ECORE_IWARP_MPA_PKT_PACKED,
ECORE_IWARP_MPA_PKT_PARTIAL,
ECORE_IWARP_MPA_PKT_UNALIGNED
};
#define ECORE_IWARP_INVALID_FPDU_LENGTH 0xffff
#define ECORE_IWARP_MPA_FPDU_LENGTH_SIZE (2)
#define ECORE_IWARP_MPA_CRC32_DIGEST_SIZE (4)
/* Pad to multiple of 4 */
#define ECORE_IWARP_PDU_DATA_LEN_WITH_PAD(data_len) (((data_len) + 3) & ~3)
#define ECORE_IWARP_FPDU_LEN_WITH_PAD(_mpa_len) \
(ECORE_IWARP_PDU_DATA_LEN_WITH_PAD(_mpa_len + \
ECORE_IWARP_MPA_FPDU_LENGTH_SIZE) + \
ECORE_IWARP_MPA_CRC32_DIGEST_SIZE)
/* fpdu can be fragmented over maximum 3 bds: header, partial mpa, unaligned */
#define ECORE_IWARP_MAX_BDS_PER_FPDU 3
char *pkt_type_str[] = {
"ECORE_IWARP_MPA_PKT_PACKED",
"ECORE_IWARP_MPA_PKT_PARTIAL",
"ECORE_IWARP_MPA_PKT_UNALIGNED"
};
static enum _ecore_status_t
ecore_iwarp_recycle_pkt(struct ecore_hwfn *p_hwfn,
struct ecore_iwarp_fpdu *fpdu,
struct ecore_iwarp_ll2_buff *buf);
static enum ecore_iwarp_mpa_pkt_type
ecore_iwarp_mpa_classify(struct ecore_hwfn *p_hwfn,
struct ecore_iwarp_fpdu *fpdu,
u16 tcp_payload_len,
u8 *mpa_data)
{
enum ecore_iwarp_mpa_pkt_type pkt_type;
u16 mpa_len;
if (fpdu->incomplete_bytes) {
pkt_type = ECORE_IWARP_MPA_PKT_UNALIGNED;
goto out;
}
/* special case of one byte remaining... */
if (tcp_payload_len == 1) {
/* lower byte will be read next packet */
fpdu->fpdu_length = *mpa_data << 8;
pkt_type = ECORE_IWARP_MPA_PKT_PARTIAL;
goto out;
}
mpa_len = ntohs(*((u16 *)(mpa_data)));
fpdu->fpdu_length = ECORE_IWARP_FPDU_LEN_WITH_PAD(mpa_len);
if (fpdu->fpdu_length <= tcp_payload_len)
pkt_type = ECORE_IWARP_MPA_PKT_PACKED;
else
pkt_type = ECORE_IWARP_MPA_PKT_PARTIAL;
out:
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA,
"MPA_ALIGN: %s: fpdu_length=0x%x tcp_payload_len:0x%x\n",
pkt_type_str[pkt_type], fpdu->fpdu_length, tcp_payload_len);
return pkt_type;
}
static void
ecore_iwarp_init_fpdu(struct ecore_iwarp_ll2_buff *buf,
struct ecore_iwarp_fpdu *fpdu,
struct unaligned_opaque_data *pkt_data,
u16 tcp_payload_size, u8 placement_offset)
{
fpdu->mpa_buf = buf;
fpdu->pkt_hdr = buf->data_phys_addr + placement_offset;
fpdu->pkt_hdr_size = pkt_data->tcp_payload_offset;
fpdu->mpa_frag = buf->data_phys_addr + pkt_data->first_mpa_offset;
fpdu->mpa_frag_virt = (u8 *)(buf->data) + pkt_data->first_mpa_offset;
if (tcp_payload_size == 1)
fpdu->incomplete_bytes = ECORE_IWARP_INVALID_FPDU_LENGTH;
else if (tcp_payload_size < fpdu->fpdu_length)
fpdu->incomplete_bytes = fpdu->fpdu_length - tcp_payload_size;
else
fpdu->incomplete_bytes = 0; /* complete fpdu */
fpdu->mpa_frag_len = fpdu->fpdu_length - fpdu->incomplete_bytes;
}
static enum _ecore_status_t
ecore_iwarp_copy_fpdu(struct ecore_hwfn *p_hwfn,
struct ecore_iwarp_fpdu *fpdu,
struct unaligned_opaque_data *pkt_data,
struct ecore_iwarp_ll2_buff *buf,
u16 tcp_payload_size)
{
u8 *tmp_buf = p_hwfn->p_rdma_info->iwarp.mpa_intermediate_buf;
enum _ecore_status_t rc;
/* need to copy the data from the partial packet stored in fpdu
* to the new buf, for this we also need to move the data currently
* placed on the buf. The assumption is that the buffer is big enough
* since fpdu_length <= mss, we use an intermediate buffer since
* we may need to copy the new data to an overlapping location
*/
if ((fpdu->mpa_frag_len + tcp_payload_size) > (u16)buf->buff_size) {
DP_ERR(p_hwfn,
"MPA ALIGN: Unexpected: buffer is not large enough for split fpdu buff_size = %d mpa_frag_len = %d, tcp_payload_size = %d, incomplete_bytes = %d\n",
buf->buff_size, fpdu->mpa_frag_len, tcp_payload_size,
fpdu->incomplete_bytes);
return ECORE_INVAL;
}
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA,
"MPA ALIGN Copying fpdu: [%p, %d] [%p, %d]\n",
fpdu->mpa_frag_virt, fpdu->mpa_frag_len,
(u8 *)(buf->data) + pkt_data->first_mpa_offset,
tcp_payload_size);
OSAL_MEMCPY(tmp_buf, fpdu->mpa_frag_virt, fpdu->mpa_frag_len);
OSAL_MEMCPY(tmp_buf + fpdu->mpa_frag_len,
(u8 *)(buf->data) + pkt_data->first_mpa_offset,
tcp_payload_size);
rc = ecore_iwarp_recycle_pkt(p_hwfn, fpdu, fpdu->mpa_buf);
if (rc)
return rc;
/* If we managed to post the buffer copy the data to the new buffer
* o/w this will occur in the next round...
*/
OSAL_MEMCPY((u8 *)(buf->data), tmp_buf,
fpdu->mpa_frag_len + tcp_payload_size);
fpdu->mpa_buf = buf;
/* fpdu->pkt_hdr remains as is */
/* fpdu->mpa_frag is overriden with new buf */
fpdu->mpa_frag = buf->data_phys_addr;
fpdu->mpa_frag_virt = buf->data;
fpdu->mpa_frag_len += tcp_payload_size;
fpdu->incomplete_bytes -= tcp_payload_size;
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA,
"MPA ALIGN: split fpdu buff_size = %d mpa_frag_len = %d, tcp_payload_size = %d, incomplete_bytes = %d\n",
buf->buff_size, fpdu->mpa_frag_len, tcp_payload_size,
fpdu->incomplete_bytes);
return 0;
}
static void
ecore_iwarp_update_fpdu_length(struct ecore_hwfn *p_hwfn,
struct ecore_iwarp_fpdu *fpdu,
u8 *mpa_data)
{
u16 mpa_len;
/* Update incomplete packets if needed */
if (fpdu->incomplete_bytes == ECORE_IWARP_INVALID_FPDU_LENGTH) {
mpa_len = fpdu->fpdu_length | *mpa_data;
fpdu->fpdu_length = ECORE_IWARP_FPDU_LEN_WITH_PAD(mpa_len);
fpdu->mpa_frag_len = fpdu->fpdu_length;
/* one byte of hdr */
fpdu->incomplete_bytes = fpdu->fpdu_length - 1;
DP_VERBOSE(p_hwfn,
ECORE_MSG_RDMA,
"MPA_ALIGN: Partial header mpa_len=%x fpdu_length=%x incomplete_bytes=%x\n",
mpa_len, fpdu->fpdu_length, fpdu->incomplete_bytes);
}
}
#define ECORE_IWARP_IS_RIGHT_EDGE(_curr_pkt) \
(GET_FIELD(_curr_pkt->flags, \
UNALIGNED_OPAQUE_DATA_PKT_REACHED_WIN_RIGHT_EDGE))
/* This function is used to recycle a buffer using the ll2 drop option. It
* uses the mechanism to ensure that all buffers posted to tx before this one
* were completed. The buffer sent here will be sent as a cookie in the tx
* completion function and can then be reposted to rx chain when done. The flow
* that requires this is the flow where a FPDU splits over more than 3 tcp
* segments. In this case the driver needs to re-post a rx buffer instead of
* the one received, but driver can't simply repost a buffer it copied from
* as there is a case where the buffer was originally a packed FPDU, and is
* partially posted to FW. Driver needs to ensure FW is done with it.
*/
static enum _ecore_status_t
ecore_iwarp_recycle_pkt(struct ecore_hwfn *p_hwfn,
struct ecore_iwarp_fpdu *fpdu,
struct ecore_iwarp_ll2_buff *buf)
{
struct ecore_ll2_tx_pkt_info tx_pkt;
enum _ecore_status_t rc;
u8 ll2_handle;
OSAL_MEM_ZERO(&tx_pkt, sizeof(tx_pkt));
tx_pkt.num_of_bds = 1;
tx_pkt.tx_dest = ECORE_LL2_TX_DEST_DROP;
tx_pkt.l4_hdr_offset_w = fpdu->pkt_hdr_size >> 2;
tx_pkt.first_frag = fpdu->pkt_hdr;
tx_pkt.first_frag_len = fpdu->pkt_hdr_size;
buf->piggy_buf = OSAL_NULL;
tx_pkt.cookie = buf;
ll2_handle = p_hwfn->p_rdma_info->iwarp.ll2_mpa_handle;
rc = ecore_ll2_prepare_tx_packet(p_hwfn,
ll2_handle,
&tx_pkt, true);
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA,
"MPA_ALIGN: send drop tx packet [%lx, 0x%x], buf=%p, rc=%d\n",
(long unsigned int)tx_pkt.first_frag,
tx_pkt.first_frag_len, buf, rc);
if (rc)
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA,
"Can't drop packet rc=%d\n", rc);
return rc;
}
static enum _ecore_status_t
ecore_iwarp_win_right_edge(struct ecore_hwfn *p_hwfn,
struct ecore_iwarp_fpdu *fpdu)
{
struct ecore_ll2_tx_pkt_info tx_pkt;
enum _ecore_status_t rc;
u8 ll2_handle;
OSAL_MEM_ZERO(&tx_pkt, sizeof(tx_pkt));
tx_pkt.num_of_bds = 1;
tx_pkt.tx_dest = ECORE_LL2_TX_DEST_LB;
tx_pkt.l4_hdr_offset_w = fpdu->pkt_hdr_size >> 2;
tx_pkt.first_frag = fpdu->pkt_hdr;
tx_pkt.first_frag_len = fpdu->pkt_hdr_size;
tx_pkt.enable_ip_cksum = true;
tx_pkt.enable_l4_cksum = true;
tx_pkt.calc_ip_len = true;
/* vlan overload with enum iwarp_ll2_tx_queues */
tx_pkt.vlan = IWARP_LL2_ALIGNED_RIGHT_TRIMMED_TX_QUEUE;
ll2_handle = p_hwfn->p_rdma_info->iwarp.ll2_mpa_handle;
rc = ecore_ll2_prepare_tx_packet(p_hwfn,
ll2_handle,
&tx_pkt, true);
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA,
"MPA_ALIGN: Sent right edge FPDU num_bds=%d [%lx, 0x%x], rc=%d\n",
tx_pkt.num_of_bds, (long unsigned int)tx_pkt.first_frag,
tx_pkt.first_frag_len, rc);
if (rc)
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA,
"Can't send right edge rc=%d\n", rc);
return rc;
}
static enum _ecore_status_t
ecore_iwarp_send_fpdu(struct ecore_hwfn *p_hwfn,
struct ecore_iwarp_fpdu *fpdu,
struct unaligned_opaque_data *curr_pkt,
struct ecore_iwarp_ll2_buff *buf,
u16 tcp_payload_size,
enum ecore_iwarp_mpa_pkt_type pkt_type)
{
struct ecore_ll2_tx_pkt_info tx_pkt;
enum _ecore_status_t rc;
u8 ll2_handle;
OSAL_MEM_ZERO(&tx_pkt, sizeof(tx_pkt));
tx_pkt.num_of_bds = (pkt_type == ECORE_IWARP_MPA_PKT_UNALIGNED) ? 3 : 2;
tx_pkt.tx_dest = ECORE_LL2_TX_DEST_LB;
tx_pkt.l4_hdr_offset_w = fpdu->pkt_hdr_size >> 2;
/* Send the mpa_buf only with the last fpdu (in case of packed) */
if ((pkt_type == ECORE_IWARP_MPA_PKT_UNALIGNED) ||
(tcp_payload_size <= fpdu->fpdu_length))
tx_pkt.cookie = fpdu->mpa_buf;
tx_pkt.first_frag = fpdu->pkt_hdr;
tx_pkt.first_frag_len = fpdu->pkt_hdr_size;
tx_pkt.enable_ip_cksum = true;
tx_pkt.enable_l4_cksum = true;
tx_pkt.calc_ip_len = true;
/* vlan overload with enum iwarp_ll2_tx_queues */
tx_pkt.vlan = IWARP_LL2_ALIGNED_TX_QUEUE;
/* special case of unaligned packet and not packed, need to send
* both buffers as cookie to release.
*/
if (tcp_payload_size == fpdu->incomplete_bytes) {
fpdu->mpa_buf->piggy_buf = buf;
}
ll2_handle = p_hwfn->p_rdma_info->iwarp.ll2_mpa_handle;
rc = ecore_ll2_prepare_tx_packet(p_hwfn,
ll2_handle,
&tx_pkt, true);
if (rc)
goto err;
rc = ecore_ll2_set_fragment_of_tx_packet(p_hwfn, ll2_handle,
fpdu->mpa_frag,
fpdu->mpa_frag_len);
if (rc)
goto err;
if (fpdu->incomplete_bytes) {
rc = ecore_ll2_set_fragment_of_tx_packet(
p_hwfn, ll2_handle,
buf->data_phys_addr + curr_pkt->first_mpa_offset,
fpdu->incomplete_bytes);
if (rc)
goto err;
}
err:
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA,
"MPA_ALIGN: Sent FPDU num_bds=%d [%lx, 0x%x], [0x%lx, 0x%x], [0x%lx, 0x%x] (cookie %p) rc=%d\n",
tx_pkt.num_of_bds, (long unsigned int)tx_pkt.first_frag,
tx_pkt.first_frag_len, (long unsigned int)fpdu->mpa_frag,
fpdu->mpa_frag_len, (long unsigned int)buf->data_phys_addr +
curr_pkt->first_mpa_offset, fpdu->incomplete_bytes,
tx_pkt.cookie, rc);
return rc;
}
static void
ecore_iwarp_mpa_get_data(struct ecore_hwfn *p_hwfn,
struct unaligned_opaque_data *curr_pkt,
u32 opaque_data0, u32 opaque_data1)
{
u64 opaque_data;
opaque_data = HILO_64(opaque_data1, opaque_data0);
*curr_pkt = *((struct unaligned_opaque_data *)&opaque_data);
/* fix endianity */
curr_pkt->first_mpa_offset = curr_pkt->tcp_payload_offset +
OSAL_LE16_TO_CPU(curr_pkt->first_mpa_offset);
curr_pkt->cid = OSAL_LE32_TO_CPU(curr_pkt->cid);
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA,
"OPAQUE0=0x%x OPAQUE1=0x%x first_mpa_offset:0x%x\ttcp_payload_offset:0x%x\tflags:0x%x\tcid:0x%x\n",
opaque_data0, opaque_data1, curr_pkt->first_mpa_offset,
curr_pkt->tcp_payload_offset, curr_pkt->flags,
curr_pkt->cid);
}
static void
ecore_iwarp_mpa_print_tcp_seq(struct ecore_hwfn *p_hwfn,
void *buf)
{
struct ecore_vlan_ethhdr *vethh;
struct ecore_ethhdr *ethh;
struct ecore_iphdr *iph;
struct ecore_ipv6hdr *ip6h;
struct ecore_tcphdr *tcph;
bool vlan_valid = false;
int eth_hlen, ip_hlen;
u16 eth_type;
if ((p_hwfn->dp_level > ECORE_LEVEL_VERBOSE) ||
!(p_hwfn->dp_module & ECORE_MSG_RDMA))
return;
ethh = (struct ecore_ethhdr *)buf;
eth_type = ntohs(ethh->h_proto);
if (eth_type == ETH_P_8021Q) {
vlan_valid = true;
vethh = (struct ecore_vlan_ethhdr *)ethh;
eth_type = ntohs(vethh->h_vlan_encapsulated_proto);
}
eth_hlen = ETH_HLEN + (vlan_valid ? sizeof(u32) : 0);
iph = (struct ecore_iphdr *)((u8 *)(ethh) + eth_hlen);
if (eth_type == ETH_P_IP) {
ip_hlen = (iph->ihl)*sizeof(u32);
} else if (eth_type == ETH_P_IPV6) {
ip6h = (struct ecore_ipv6hdr *)iph;
ip_hlen = sizeof(*ip6h);
} else {
DP_ERR(p_hwfn, "Unexpected ethertype on ll2 %x\n", eth_type);
return;
}
tcph = (struct ecore_tcphdr *)((u8 *)iph + ip_hlen);
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA, "Processing MPA PKT: tcp_seq=0x%x tcp_ack_seq=0x%x\n",
ntohl(tcph->seq), ntohl(tcph->ack_seq));
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA, "eth_type =%d Source mac: [0x%x]:[0x%x]:[0x%x]:[0x%x]:[0x%x]:[0x%x]\n",
eth_type, ethh->h_source[0], ethh->h_source[1],
ethh->h_source[2], ethh->h_source[3],
ethh->h_source[4], ethh->h_source[5]);
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA, "eth_hlen=%d destination mac: [0x%x]:[0x%x]:[0x%x]:[0x%x]:[0x%x]:[0x%x]\n",
eth_hlen, ethh->h_dest[0], ethh->h_dest[1],
ethh->h_dest[2], ethh->h_dest[3],
ethh->h_dest[4], ethh->h_dest[5]);
return;
}
/* This function is called when an unaligned or incomplete MPA packet arrives
* driver needs to align the packet, perhaps using previous data and send
* it down to FW once it is aligned.
*/
static enum _ecore_status_t
ecore_iwarp_process_mpa_pkt(struct ecore_hwfn *p_hwfn,
struct ecore_iwarp_ll2_mpa_buf *mpa_buf)
{
struct ecore_iwarp_ll2_buff *buf = mpa_buf->ll2_buf;
enum ecore_iwarp_mpa_pkt_type pkt_type;
struct unaligned_opaque_data *curr_pkt = &mpa_buf->data;
struct ecore_iwarp_fpdu *fpdu;
u8 *mpa_data;
enum _ecore_status_t rc = ECORE_SUCCESS;
ecore_iwarp_mpa_print_tcp_seq(
p_hwfn, (u8 *)(buf->data) + mpa_buf->placement_offset);
fpdu = ecore_iwarp_get_curr_fpdu(p_hwfn, curr_pkt->cid & 0xffff);
if (!fpdu) {/* something corrupt with cid, post rx back */
DP_ERR(p_hwfn, "Invalid cid, drop and post back to rx cid=%x\n",
curr_pkt->cid);
rc = ecore_iwarp_ll2_post_rx(
p_hwfn, buf, p_hwfn->p_rdma_info->iwarp.ll2_mpa_handle);
if (rc) { /* not much we can do here except log and free */
DP_ERR(p_hwfn, "Post rx buffer failed\n");
/* we don't expect any failures from rx, not even
* busy since we allocate #bufs=#descs
*/
rc = ECORE_UNKNOWN_ERROR;
}
return rc;
}
do {
mpa_data = ((u8 *)(buf->data) + curr_pkt->first_mpa_offset);
pkt_type = ecore_iwarp_mpa_classify(p_hwfn, fpdu,
mpa_buf->tcp_payload_len,
mpa_data);
switch (pkt_type) {
case ECORE_IWARP_MPA_PKT_PARTIAL:
ecore_iwarp_init_fpdu(buf, fpdu,
curr_pkt,
mpa_buf->tcp_payload_len,
mpa_buf->placement_offset);
if (!ECORE_IWARP_IS_RIGHT_EDGE(curr_pkt)) {
mpa_buf->tcp_payload_len = 0;
break;
}
rc = ecore_iwarp_win_right_edge(p_hwfn, fpdu);
if (rc) {
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA,
"Can't send FPDU:reset rc=%d\n", rc);
OSAL_MEM_ZERO(fpdu, sizeof(*fpdu));
break;
}
mpa_buf->tcp_payload_len = 0;
break;
case ECORE_IWARP_MPA_PKT_PACKED:
if (fpdu->fpdu_length == 8) {
DP_ERR(p_hwfn, "SUSPICIOUS fpdu_length = 0x%x: assuming bug...aborting this packet...\n",
fpdu->fpdu_length);
mpa_buf->tcp_payload_len = 0;
break;
}
ecore_iwarp_init_fpdu(buf, fpdu,
curr_pkt,
mpa_buf->tcp_payload_len,
mpa_buf->placement_offset);
rc = ecore_iwarp_send_fpdu(p_hwfn, fpdu, curr_pkt, buf,
mpa_buf->tcp_payload_len,
pkt_type);
if (rc) {
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA,
"Can't send FPDU:reset rc=%d\n", rc);
OSAL_MEM_ZERO(fpdu, sizeof(*fpdu));
break;
}
mpa_buf->tcp_payload_len -= fpdu->fpdu_length;
curr_pkt->first_mpa_offset += fpdu->fpdu_length;
break;
case ECORE_IWARP_MPA_PKT_UNALIGNED:
ecore_iwarp_update_fpdu_length(p_hwfn, fpdu, mpa_data);
if (mpa_buf->tcp_payload_len < fpdu->incomplete_bytes) {
/* special handling of fpdu split over more
* than 2 segments
*/
if (ECORE_IWARP_IS_RIGHT_EDGE(curr_pkt)) {
rc = ecore_iwarp_win_right_edge(p_hwfn,
fpdu);
/* packet will be re-processed later */
if (rc)
return rc;
}
rc = ecore_iwarp_copy_fpdu(
p_hwfn, fpdu, curr_pkt,
buf, mpa_buf->tcp_payload_len);
/* packet will be re-processed later */
if (rc)
return rc;
mpa_buf->tcp_payload_len = 0;
break;
}
rc = ecore_iwarp_send_fpdu(p_hwfn, fpdu, curr_pkt, buf,
mpa_buf->tcp_payload_len,
pkt_type);
if (rc) {
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA,
"Can't send FPDU:delay rc=%d\n", rc);
/* don't reset fpdu -> we need it for next
* classify
*/
break;
}
mpa_buf->tcp_payload_len -= fpdu->incomplete_bytes;
curr_pkt->first_mpa_offset += fpdu->incomplete_bytes;
/* The framed PDU was sent - no more incomplete bytes */
fpdu->incomplete_bytes = 0;
break;
}
} while (mpa_buf->tcp_payload_len && !rc);
return rc;
}
static void
ecore_iwarp_process_pending_pkts(struct ecore_hwfn *p_hwfn)
{
struct ecore_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp;
struct ecore_iwarp_ll2_mpa_buf *mpa_buf = OSAL_NULL;
enum _ecore_status_t rc;
while (!OSAL_LIST_IS_EMPTY(&iwarp_info->mpa_buf_pending_list)) {
mpa_buf = OSAL_LIST_FIRST_ENTRY(
&iwarp_info->mpa_buf_pending_list,
struct ecore_iwarp_ll2_mpa_buf,
list_entry);
rc = ecore_iwarp_process_mpa_pkt(p_hwfn, mpa_buf);
/* busy means break and continue processing later, don't
* remove the buf from the pending list.
*/
if (rc == ECORE_BUSY)
break;
#ifdef _NTDDK_
#pragma warning(suppress : 6011)
#pragma warning(suppress : 28182)
#endif
OSAL_LIST_REMOVE_ENTRY(
&mpa_buf->list_entry,
&iwarp_info->mpa_buf_pending_list);
OSAL_LIST_PUSH_TAIL(&mpa_buf->list_entry,
&iwarp_info->mpa_buf_list);
if (rc) { /* different error, don't continue */
DP_NOTICE(p_hwfn, false, "process pkts failed rc=%d\n",
rc);
break;
}
}
}
static void
ecore_iwarp_ll2_comp_mpa_pkt(void *cxt,
struct ecore_ll2_comp_rx_data *data)
{
struct ecore_hwfn *p_hwfn = (struct ecore_hwfn *)cxt;
struct ecore_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp;
struct ecore_iwarp_ll2_mpa_buf *mpa_buf;
iwarp_info->unalign_rx_comp++;
mpa_buf = OSAL_LIST_FIRST_ENTRY(&iwarp_info->mpa_buf_list,
struct ecore_iwarp_ll2_mpa_buf,
list_entry);
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA,
"LL2 MPA CompRx buf=%p placement_offset=%d, payload_len=0x%x mpa_buf=%p\n",
data->cookie, data->u.placement_offset,
data->length.packet_length, mpa_buf);
if (!mpa_buf) {
DP_ERR(p_hwfn, "no free mpa buf. this is a driver bug.\n");
return;
}
OSAL_LIST_REMOVE_ENTRY(&mpa_buf->list_entry, &iwarp_info->mpa_buf_list);
ecore_iwarp_mpa_get_data(p_hwfn, &mpa_buf->data,
data->opaque_data_0, data->opaque_data_1);
mpa_buf->tcp_payload_len = data->length.packet_length -
mpa_buf->data.first_mpa_offset;
mpa_buf->ll2_buf = (struct ecore_iwarp_ll2_buff *)data->cookie;
mpa_buf->data.first_mpa_offset += data->u.placement_offset;
mpa_buf->placement_offset = data->u.placement_offset;
OSAL_LIST_PUSH_TAIL(&mpa_buf->list_entry,
&iwarp_info->mpa_buf_pending_list);
ecore_iwarp_process_pending_pkts(p_hwfn);
}
static void
ecore_iwarp_ll2_comp_syn_pkt(void *cxt, struct ecore_ll2_comp_rx_data *data)
{
struct ecore_hwfn *p_hwfn = (struct ecore_hwfn *)cxt;
struct ecore_iwarp_ll2_buff *buf =
(struct ecore_iwarp_ll2_buff *)data->cookie;
struct ecore_iwarp_listener *listener;
struct ecore_iwarp_cm_info cm_info;
struct ecore_ll2_tx_pkt_info tx_pkt;
u8 remote_mac_addr[ETH_ALEN];
u8 local_mac_addr[ETH_ALEN];
struct ecore_iwarp_ep *ep;
enum _ecore_status_t rc;
int tcp_start_offset;
u8 ts_hdr_size = 0;
int payload_len;
u32 hdr_size;
OSAL_MEM_ZERO(&cm_info, sizeof(cm_info));
/* Check if packet was received with errors... */
if (data->err_flags != 0) {
DP_NOTICE(p_hwfn, false, "Error received on SYN packet: 0x%x\n",
data->err_flags);
goto err;
}
if (GET_FIELD(data->parse_flags,
PARSING_AND_ERR_FLAGS_L4CHKSMWASCALCULATED) &&
GET_FIELD(data->parse_flags,
PARSING_AND_ERR_FLAGS_L4CHKSMERROR)) {
DP_NOTICE(p_hwfn, false, "Syn packet received with checksum error\n");
goto err;
}
rc = ecore_iwarp_parse_rx_pkt(
p_hwfn, &cm_info, (u8 *)(buf->data) + data->u.placement_offset,
remote_mac_addr, local_mac_addr, &payload_len,
&tcp_start_offset);
if (rc)
goto err;
/* Check if there is a listener for this 4-tuple */
listener = ecore_iwarp_get_listener(p_hwfn, &cm_info);
if (!listener) {
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA,
"SYN received on tuple not listened on parse_flags=%d packet len=%d\n",
data->parse_flags, data->length.packet_length);
OSAL_MEMSET(&tx_pkt, 0, sizeof(tx_pkt));
tx_pkt.num_of_bds = 1;
tx_pkt.bd_flags = 0;
tx_pkt.l4_hdr_offset_w = (data->length.packet_length) >> 2;
tx_pkt.tx_dest = ECORE_LL2_TX_DEST_LB;
tx_pkt.first_frag = buf->data_phys_addr +
data->u.placement_offset;
tx_pkt.first_frag_len = data->length.packet_length;
tx_pkt.cookie = buf;
rc = ecore_ll2_prepare_tx_packet(
p_hwfn,
p_hwfn->p_rdma_info->iwarp.ll2_syn_handle,
&tx_pkt, true);
if (rc) {
DP_NOTICE(p_hwfn, false,
"Can't post SYN back to chip rc=%d\n", rc);
goto err;
}
return;
}
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA, "Received syn on listening port\n");
/* For debugging purpose... */
if (listener->drop)
goto err;
/* There may be an open ep on this connection if this is a syn
* retrasnmit... need to make sure there isn't...
*/
if (ecore_iwarp_ep_exists(p_hwfn, listener, &cm_info))
goto err;
ep = ecore_iwarp_get_free_ep(p_hwfn);
if (ep == OSAL_NULL)
goto err;
OSAL_SPIN_LOCK(&listener->lock);
OSAL_LIST_PUSH_TAIL(&ep->list_entry, &listener->ep_list);
OSAL_SPIN_UNLOCK(&listener->lock);
OSAL_MEMCPY(ep->remote_mac_addr,
remote_mac_addr,
ETH_ALEN);
OSAL_MEMCPY(ep->local_mac_addr,
local_mac_addr,
ETH_ALEN);
OSAL_MEMCPY(&ep->cm_info, &cm_info, sizeof(ep->cm_info));
if (p_hwfn->p_rdma_info->iwarp.tcp_flags & ECORE_IWARP_TS_EN)
ts_hdr_size = TIMESTAMP_HEADER_SIZE;
hdr_size = ((cm_info.ip_version == ECORE_TCP_IPV4) ? 40 : 60) +
ts_hdr_size;
ep->mss = p_hwfn->p_rdma_info->iwarp.max_mtu - hdr_size;
ep->mss = OSAL_MIN_T(u16, ECORE_IWARP_MAX_FW_MSS, ep->mss);
ep->listener = listener;
ep->event_cb = listener->event_cb;
ep->cb_context = listener->cb_context;
ep->connect_mode = TCP_CONNECT_PASSIVE;
ep->syn = buf;
ep->syn_ip_payload_length = (u16)payload_len;
ep->syn_phy_addr = buf->data_phys_addr + data->u.placement_offset +
tcp_start_offset;
rc = ecore_iwarp_tcp_offload(p_hwfn, ep);
if (rc != ECORE_SUCCESS) {
ecore_iwarp_return_ep(p_hwfn, ep);
goto err;
}
return;
err:
ecore_iwarp_ll2_post_rx(
p_hwfn, buf, p_hwfn->p_rdma_info->iwarp.ll2_syn_handle);
}
static void
ecore_iwarp_ll2_rel_rx_pkt(void *cxt,
u8 OSAL_UNUSED connection_handle,
void *cookie,
dma_addr_t OSAL_UNUSED rx_buf_addr,
bool OSAL_UNUSED b_last_packet)
{
struct ecore_hwfn *p_hwfn = (struct ecore_hwfn *)cxt;
struct ecore_iwarp_ll2_buff *buffer =
(struct ecore_iwarp_ll2_buff *)cookie;
OSAL_DMA_FREE_COHERENT(p_hwfn->p_dev,
buffer->data,
buffer->data_phys_addr,
buffer->buff_size);
OSAL_FREE(p_hwfn->p_dev, buffer);
}
static void
ecore_iwarp_ll2_comp_tx_pkt(void *cxt,
u8 connection_handle,
void *cookie,
dma_addr_t OSAL_UNUSED first_frag_addr,
bool OSAL_UNUSED b_last_fragment,
bool OSAL_UNUSED b_last_packet)
{
struct ecore_hwfn *p_hwfn = (struct ecore_hwfn *)cxt;
struct ecore_iwarp_ll2_buff *buffer =
(struct ecore_iwarp_ll2_buff *)cookie;
struct ecore_iwarp_ll2_buff *piggy;
if (!buffer) /* can happen in packed mpa unaligned... */
return;
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA,
"LL2 CompTX buf=%p piggy_buf=%p handle=%d\n",
buffer, buffer->piggy_buf, connection_handle);
/* we got a tx packet -> this was originally a rx packet... now we
* can post it back...
*/
piggy = buffer->piggy_buf;
if (piggy) {
buffer->piggy_buf = OSAL_NULL;
ecore_iwarp_ll2_post_rx(p_hwfn, piggy,
connection_handle);
}
ecore_iwarp_ll2_post_rx(p_hwfn, buffer,
connection_handle);
if (connection_handle == p_hwfn->p_rdma_info->iwarp.ll2_mpa_handle)
ecore_iwarp_process_pending_pkts(p_hwfn);
return;
}
static void
ecore_iwarp_ll2_rel_tx_pkt(void *cxt,
u8 OSAL_UNUSED connection_handle,
void *cookie,
dma_addr_t OSAL_UNUSED first_frag_addr,
bool OSAL_UNUSED b_last_fragment,
bool OSAL_UNUSED b_last_packet)
{
struct ecore_hwfn *p_hwfn = (struct ecore_hwfn *)cxt;
struct ecore_iwarp_ll2_buff *buffer =
(struct ecore_iwarp_ll2_buff *)cookie;
if (!buffer)
return;
if (buffer->piggy_buf) {
OSAL_DMA_FREE_COHERENT(
p_hwfn->p_dev,
buffer->piggy_buf->data,
buffer->piggy_buf->data_phys_addr,
buffer->piggy_buf->buff_size);
OSAL_FREE(p_hwfn->p_dev, buffer->piggy_buf);
}
OSAL_DMA_FREE_COHERENT(p_hwfn->p_dev,
buffer->data,
buffer->data_phys_addr,
buffer->buff_size);
OSAL_FREE(p_hwfn->p_dev, buffer);
return;
}
/* Current known slowpath for iwarp ll2 is unalign flush. When this completion
* is received, need to reset the FPDU.
*/
static void
ecore_iwarp_ll2_slowpath(void *cxt,
u8 OSAL_UNUSED connection_handle,
u32 opaque_data_0,
u32 opaque_data_1)
{
struct ecore_hwfn *p_hwfn = (struct ecore_hwfn *)cxt;
struct unaligned_opaque_data unalign_data;
struct ecore_iwarp_fpdu *fpdu;
ecore_iwarp_mpa_get_data(p_hwfn, &unalign_data,
opaque_data_0, opaque_data_1);
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA, "(0x%x) Flush fpdu\n",
unalign_data.cid);
fpdu = ecore_iwarp_get_curr_fpdu(p_hwfn, (u16)unalign_data.cid);
if (fpdu)
OSAL_MEM_ZERO(fpdu, sizeof(*fpdu));
}
static int
ecore_iwarp_ll2_stop(struct ecore_hwfn *p_hwfn)
{
struct ecore_iwarp_info *iwarp_info = &p_hwfn->p_rdma_info->iwarp;
int rc = 0;
if (iwarp_info->ll2_syn_handle != ECORE_IWARP_HANDLE_INVAL) {
rc = ecore_ll2_terminate_connection(p_hwfn,
iwarp_info->ll2_syn_handle);
if (rc)
DP_INFO(p_hwfn, "Failed to terminate syn connection\n");
ecore_ll2_release_connection(p_hwfn,
iwarp_info->ll2_syn_handle);
iwarp_info->ll2_syn_handle = ECORE_IWARP_HANDLE_INVAL;
}
if (iwarp_info->ll2_ooo_handle != ECORE_IWARP_HANDLE_INVAL) {
rc = ecore_ll2_terminate_connection(p_hwfn,
iwarp_info->ll2_ooo_handle);
if (rc)
DP_INFO(p_hwfn, "Failed to terminate ooo connection\n");
ecore_ll2_release_connection(p_hwfn,
iwarp_info->ll2_ooo_handle);
iwarp_info->ll2_ooo_handle = ECORE_IWARP_HANDLE_INVAL;
}
if (iwarp_info->ll2_mpa_handle != ECORE_IWARP_HANDLE_INVAL) {
rc = ecore_ll2_terminate_connection(p_hwfn,
iwarp_info->ll2_mpa_handle);
if (rc)
DP_INFO(p_hwfn, "Failed to terminate mpa connection\n");
ecore_ll2_release_connection(p_hwfn,
iwarp_info->ll2_mpa_handle);
iwarp_info->ll2_mpa_handle = ECORE_IWARP_HANDLE_INVAL;
}
ecore_llh_remove_mac_filter(p_hwfn->p_dev, 0,
p_hwfn->p_rdma_info->iwarp.mac_addr);
return rc;
}
static int
ecore_iwarp_ll2_alloc_buffers(struct ecore_hwfn *p_hwfn,
int num_rx_bufs,
int buff_size,
u8 ll2_handle)
{
struct ecore_iwarp_ll2_buff *buffer;
int rc = 0;
int i;
for (i = 0; i < num_rx_bufs; i++) {
buffer = OSAL_ZALLOC(p_hwfn->p_dev,
GFP_KERNEL, sizeof(*buffer));
if (!buffer) {
DP_INFO(p_hwfn, "Failed to allocate LL2 buffer desc\n");
break;
}
buffer->data =
OSAL_DMA_ALLOC_COHERENT(p_hwfn->p_dev,
&buffer->data_phys_addr,
buff_size);
if (!buffer->data) {
DP_INFO(p_hwfn, "Failed to allocate LL2 buffers\n");
OSAL_FREE(p_hwfn->p_dev, buffer);
rc = ECORE_NOMEM;
break;
}
buffer->buff_size = buff_size;
rc = ecore_iwarp_ll2_post_rx(p_hwfn, buffer, ll2_handle);
if (rc)
break; /* buffers will be deallocated by ecore_ll2 */
}
return rc;
}
#define ECORE_IWARP_CACHE_PADDING(size) \
(((size) + ETH_CACHE_LINE_SIZE - 1) & ~(ETH_CACHE_LINE_SIZE - 1))
#define ECORE_IWARP_MAX_BUF_SIZE(mtu) \
ECORE_IWARP_CACHE_PADDING(mtu + ETH_HLEN + 2*VLAN_HLEN + 2 +\
ETH_CACHE_LINE_SIZE)
static int
ecore_iwarp_ll2_start(struct ecore_hwfn *p_hwfn,
struct ecore_rdma_start_in_params *params)
{
struct ecore_iwarp_info *iwarp_info;
struct ecore_ll2_acquire_data data;
struct ecore_ll2_cbs cbs;
u32 mpa_buff_size;
int rc = ECORE_SUCCESS;
u16 n_ooo_bufs;
int i;
iwarp_info = &p_hwfn->p_rdma_info->iwarp;
iwarp_info->ll2_syn_handle = ECORE_IWARP_HANDLE_INVAL;
iwarp_info->ll2_ooo_handle = ECORE_IWARP_HANDLE_INVAL;
iwarp_info->ll2_mpa_handle = ECORE_IWARP_HANDLE_INVAL;
iwarp_info->max_mtu = params->max_mtu;
OSAL_MEMCPY(p_hwfn->p_rdma_info->iwarp.mac_addr, params->mac_addr,
ETH_ALEN);
rc = ecore_llh_add_mac_filter(p_hwfn->p_dev, 0, params->mac_addr);
if (rc != ECORE_SUCCESS)
return rc;
/* Start SYN connection */
cbs.rx_comp_cb = ecore_iwarp_ll2_comp_syn_pkt;
cbs.rx_release_cb = ecore_iwarp_ll2_rel_rx_pkt;
cbs.tx_comp_cb = ecore_iwarp_ll2_comp_tx_pkt;
cbs.tx_release_cb = ecore_iwarp_ll2_rel_tx_pkt;
cbs.cookie = p_hwfn;
OSAL_MEMSET(&data, 0, sizeof(data));
data.input.conn_type = ECORE_LL2_TYPE_IWARP;
data.input.mtu = ECORE_IWARP_MAX_SYN_PKT_SIZE;
data.input.rx_num_desc = ECORE_IWARP_LL2_SYN_RX_SIZE;
data.input.tx_num_desc = ECORE_IWARP_LL2_SYN_TX_SIZE;
data.input.tx_max_bds_per_packet = 1; /* will never be fragmented */
data.input.tx_tc = PKT_LB_TC;
data.input.tx_dest = ECORE_LL2_TX_DEST_LB;
data.p_connection_handle = &iwarp_info->ll2_syn_handle;
data.cbs = &cbs;
rc = ecore_ll2_acquire_connection(p_hwfn, &data);
if (rc) {
DP_NOTICE(p_hwfn, false, "Failed to acquire LL2 connection\n");
ecore_llh_remove_mac_filter(p_hwfn->p_dev, 0, params->mac_addr);
return rc;
}
rc = ecore_ll2_establish_connection(p_hwfn, iwarp_info->ll2_syn_handle);
if (rc) {
DP_NOTICE(p_hwfn, false,
"Failed to establish LL2 connection\n");
goto err;
}
rc = ecore_iwarp_ll2_alloc_buffers(p_hwfn,
ECORE_IWARP_LL2_SYN_RX_SIZE,
ECORE_IWARP_MAX_SYN_PKT_SIZE,
iwarp_info->ll2_syn_handle);
if (rc)
goto err;
/* Start OOO connection */
data.input.conn_type = ECORE_LL2_TYPE_OOO;
data.input.mtu = params->max_mtu;
n_ooo_bufs = params->iwarp.ooo_num_rx_bufs;
if (n_ooo_bufs > ECORE_IWARP_LL2_OOO_MAX_RX_SIZE)
n_ooo_bufs = ECORE_IWARP_LL2_OOO_MAX_RX_SIZE;
data.input.rx_num_desc = n_ooo_bufs;
data.input.rx_num_ooo_buffers = n_ooo_bufs;
p_hwfn->p_rdma_info->iwarp.num_ooo_rx_bufs = data.input.rx_num_desc;
data.input.tx_max_bds_per_packet = 1; /* will never be fragmented */
data.input.tx_num_desc = ECORE_IWARP_LL2_OOO_DEF_TX_SIZE;
data.p_connection_handle = &iwarp_info->ll2_ooo_handle;
data.input.secondary_queue = true;
rc = ecore_ll2_acquire_connection(p_hwfn, &data);
if (rc)
goto err;
rc = ecore_ll2_establish_connection(p_hwfn, iwarp_info->ll2_ooo_handle);
if (rc)
goto err;
/* Start MPA connection */
cbs.rx_comp_cb = ecore_iwarp_ll2_comp_mpa_pkt;
cbs.slowpath_cb = ecore_iwarp_ll2_slowpath;
OSAL_MEMSET(&data, 0, sizeof(data));
data.input.conn_type = ECORE_LL2_TYPE_IWARP;
data.input.mtu = params->max_mtu;
data.input.rx_num_desc = n_ooo_bufs * 2;
/* we allocate the same amount for TX to reduce the chance we
* run out of tx descriptors
*/
data.input.tx_num_desc = data.input.rx_num_desc;
data.input.tx_max_bds_per_packet = ECORE_IWARP_MAX_BDS_PER_FPDU;
data.p_connection_handle = &iwarp_info->ll2_mpa_handle;
data.input.secondary_queue = true;
data.cbs = &cbs;
rc = ecore_ll2_acquire_connection(p_hwfn, &data);
if (rc)
goto err;
rc = ecore_ll2_establish_connection(p_hwfn, iwarp_info->ll2_mpa_handle);
if (rc)
goto err;
mpa_buff_size = ECORE_IWARP_MAX_BUF_SIZE(params->max_mtu);
rc = ecore_iwarp_ll2_alloc_buffers(p_hwfn,
data.input.rx_num_desc,
mpa_buff_size,
iwarp_info->ll2_mpa_handle);
if (rc)
goto err;
iwarp_info->partial_fpdus =
OSAL_ZALLOC(p_hwfn->p_dev, GFP_KERNEL,
sizeof(*iwarp_info->partial_fpdus) *
(u16)p_hwfn->p_rdma_info->num_qps);
if (!iwarp_info->partial_fpdus) {
DP_NOTICE(p_hwfn, false,
"Failed to allocate ecore_iwarp_info(partial_fpdus)\n");
goto err;
}
iwarp_info->max_num_partial_fpdus = (u16)p_hwfn->p_rdma_info->num_qps;
/* The mpa_bufs array serves for pending RX packets received on the
* mpa ll2 that don't have place on the tx ring and require later
* processing. We can't fail on allocation of such a struct therefore
* we allocate enough to take care of all rx packets
*/
iwarp_info->mpa_bufs =
OSAL_ZALLOC(p_hwfn->p_dev, GFP_KERNEL,
sizeof(*iwarp_info->mpa_bufs) *
data.input.rx_num_desc);
if (!iwarp_info->mpa_bufs) {
DP_NOTICE(p_hwfn, false,
"Failed to allocate mpa_bufs array mem_size=%d\n",
(u32)(sizeof(*iwarp_info->mpa_bufs) *
data.input.rx_num_desc));
goto err;
}
iwarp_info->mpa_intermediate_buf =
OSAL_ZALLOC(p_hwfn->p_dev, GFP_KERNEL, mpa_buff_size);
if (!iwarp_info->mpa_intermediate_buf) {
DP_NOTICE(p_hwfn, false,
"Failed to allocate mpa_intermediate_buf mem_size=%d\n",
mpa_buff_size);
goto err;
}
OSAL_LIST_INIT(&iwarp_info->mpa_buf_pending_list);
OSAL_LIST_INIT(&iwarp_info->mpa_buf_list);
for (i = 0; i < data.input.rx_num_desc; i++) {
OSAL_LIST_PUSH_TAIL(&iwarp_info->mpa_bufs[i].list_entry,
&iwarp_info->mpa_buf_list);
}
return rc;
err:
ecore_iwarp_ll2_stop(p_hwfn);
return rc;
}
static void
ecore_iwarp_set_defaults(struct ecore_hwfn *p_hwfn,
struct ecore_rdma_start_in_params *params)
{
u32 rcv_wnd_size;
u32 n_ooo_bufs;
/* rcv_wnd_size = 0: use defaults */
rcv_wnd_size = params->iwarp.rcv_wnd_size;
if (!rcv_wnd_size) {
if (ecore_device_num_ports(p_hwfn->p_dev) == 4) {
rcv_wnd_size = ECORE_IS_AH(p_hwfn->p_dev) ?
ECORE_IWARP_RCV_WND_SIZE_AH_DEF_4_PORTS :
ECORE_IWARP_RCV_WND_SIZE_BB_DEF_4_PORTS;
} else {
rcv_wnd_size = ECORE_IS_AH(p_hwfn->p_dev) ?
ECORE_IWARP_RCV_WND_SIZE_AH_DEF_2_PORTS :
ECORE_IWARP_RCV_WND_SIZE_BB_DEF_2_PORTS;
}
params->iwarp.rcv_wnd_size = rcv_wnd_size;
}
n_ooo_bufs = params->iwarp.ooo_num_rx_bufs;
if (!n_ooo_bufs) {
n_ooo_bufs = (u32)(((u64)ECORE_MAX_OOO *
params->iwarp.rcv_wnd_size) /
params->max_mtu);
n_ooo_bufs = OSAL_MIN_T(u32, n_ooo_bufs, USHRT_MAX);
params->iwarp.ooo_num_rx_bufs = (u16)n_ooo_bufs;
}
}
enum _ecore_status_t
ecore_iwarp_setup(struct ecore_hwfn *p_hwfn,
struct ecore_rdma_start_in_params *params)
{
enum _ecore_status_t rc = ECORE_SUCCESS;
struct ecore_iwarp_info *iwarp_info;
u32 rcv_wnd_size;
iwarp_info = &(p_hwfn->p_rdma_info->iwarp);
if (!params->iwarp.rcv_wnd_size || !params->iwarp.ooo_num_rx_bufs)
ecore_iwarp_set_defaults(p_hwfn, params);
/* Scale 0 will set window of 0xFFFC (64K -4).
* Scale x will set window of 0xFFFC << (x)
* Therefore we subtract log2(64K) so that result is 0
*/
rcv_wnd_size = params->iwarp.rcv_wnd_size;
if (rcv_wnd_size < ECORE_IWARP_RCV_WND_SIZE_MIN)
rcv_wnd_size = ECORE_IWARP_RCV_WND_SIZE_MIN;
iwarp_info->rcv_wnd_scale = OSAL_MIN_T(u32, OSAL_LOG2(rcv_wnd_size) -
OSAL_LOG2(ECORE_IWARP_RCV_WND_SIZE_MIN), ECORE_IWARP_MAX_WND_SCALE);
iwarp_info->rcv_wnd_size = rcv_wnd_size >> iwarp_info->rcv_wnd_scale;
iwarp_info->tcp_flags = params->iwarp.flags;
iwarp_info->crc_needed = params->iwarp.crc_needed;
switch (params->iwarp.mpa_rev) {
case ECORE_MPA_REV1:
iwarp_info->mpa_rev = MPA_NEGOTIATION_TYPE_BASIC;
break;
case ECORE_MPA_REV2:
iwarp_info->mpa_rev = MPA_NEGOTIATION_TYPE_ENHANCED;
break;
}
iwarp_info->peer2peer = params->iwarp.mpa_peer2peer;
iwarp_info->rtr_type = MPA_RTR_TYPE_NONE;
if (params->iwarp.mpa_rtr & ECORE_MPA_RTR_TYPE_ZERO_SEND)
iwarp_info->rtr_type |= MPA_RTR_TYPE_ZERO_SEND;
if (params->iwarp.mpa_rtr & ECORE_MPA_RTR_TYPE_ZERO_WRITE)
iwarp_info->rtr_type |= MPA_RTR_TYPE_ZERO_WRITE;
if (params->iwarp.mpa_rtr & ECORE_MPA_RTR_TYPE_ZERO_READ)
iwarp_info->rtr_type |= MPA_RTR_TYPE_ZERO_READ;
//DAVIDS OSAL_SPIN_LOCK_INIT(&p_hwfn->p_rdma_info->iwarp.qp_lock);
OSAL_LIST_INIT(&p_hwfn->p_rdma_info->iwarp.ep_list);
OSAL_LIST_INIT(&p_hwfn->p_rdma_info->iwarp.listen_list);
ecore_spq_register_async_cb(p_hwfn, PROTOCOLID_IWARP,
ecore_iwarp_async_event);
ecore_ooo_setup(p_hwfn);
rc = ecore_iwarp_ll2_start(p_hwfn, params);
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA,
"MPA_REV = %d. peer2peer=%d rtr=%x\n",
iwarp_info->mpa_rev,
iwarp_info->peer2peer,
iwarp_info->rtr_type);
return rc;
}
enum _ecore_status_t
ecore_iwarp_stop(struct ecore_hwfn *p_hwfn)
{
enum _ecore_status_t rc;
ecore_iwarp_free_prealloc_ep(p_hwfn);
rc = ecore_iwarp_wait_for_all_cids(p_hwfn);
if (rc != ECORE_SUCCESS)
return rc;
ecore_spq_unregister_async_cb(p_hwfn, PROTOCOLID_IWARP);
return ecore_iwarp_ll2_stop(p_hwfn);
}
static void
ecore_iwarp_qp_in_error(struct ecore_hwfn *p_hwfn,
struct ecore_iwarp_ep *ep,
u8 fw_return_code)
{
struct ecore_iwarp_cm_event_params params;
ecore_iwarp_modify_qp(p_hwfn, ep->qp, ECORE_IWARP_QP_STATE_ERROR, true);
params.event = ECORE_IWARP_EVENT_CLOSE;
params.ep_context = ep;
params.cm_info = &ep->cm_info;
params.status = (fw_return_code == IWARP_QP_IN_ERROR_GOOD_CLOSE) ?
ECORE_SUCCESS : ECORE_CONN_RESET;
ep->state = ECORE_IWARP_EP_CLOSED;
OSAL_SPIN_LOCK(&p_hwfn->p_rdma_info->iwarp.iw_lock);
OSAL_LIST_REMOVE_ENTRY(&ep->list_entry,
&p_hwfn->p_rdma_info->iwarp.ep_list);
OSAL_SPIN_UNLOCK(&p_hwfn->p_rdma_info->iwarp.iw_lock);
ep->event_cb(ep->cb_context, ¶ms);
}
static void
ecore_iwarp_exception_received(struct ecore_hwfn *p_hwfn,
struct ecore_iwarp_ep *ep,
int fw_ret_code)
{
struct ecore_iwarp_cm_event_params params;
bool event_cb = false;
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA, "EP(0x%x) fw_ret_code=%d\n",
ep->cid, fw_ret_code);
switch (fw_ret_code) {
case IWARP_EXCEPTION_DETECTED_LLP_CLOSED:
params.status = ECORE_SUCCESS;
params.event = ECORE_IWARP_EVENT_DISCONNECT;
event_cb = true;
break;
case IWARP_EXCEPTION_DETECTED_LLP_RESET:
params.status = ECORE_CONN_RESET;
params.event = ECORE_IWARP_EVENT_DISCONNECT;
event_cb = true;
break;
case IWARP_EXCEPTION_DETECTED_RQ_EMPTY:
params.event = ECORE_IWARP_EVENT_RQ_EMPTY;
event_cb = true;
break;
case IWARP_EXCEPTION_DETECTED_IRQ_FULL:
params.event = ECORE_IWARP_EVENT_IRQ_FULL;
event_cb = true;
break;
case IWARP_EXCEPTION_DETECTED_LLP_TIMEOUT:
params.event = ECORE_IWARP_EVENT_LLP_TIMEOUT;
event_cb = true;
break;
case IWARP_EXCEPTION_DETECTED_REMOTE_PROTECTION_ERROR:
params.event = ECORE_IWARP_EVENT_REMOTE_PROTECTION_ERROR;
event_cb = true;
break;
case IWARP_EXCEPTION_DETECTED_CQ_OVERFLOW:
params.event = ECORE_IWARP_EVENT_CQ_OVERFLOW;
event_cb = true;
break;
case IWARP_EXCEPTION_DETECTED_LOCAL_CATASTROPHIC:
params.event = ECORE_IWARP_EVENT_QP_CATASTROPHIC;
event_cb = true;
break;
case IWARP_EXCEPTION_DETECTED_LOCAL_ACCESS_ERROR:
params.event = ECORE_IWARP_EVENT_LOCAL_ACCESS_ERROR;
event_cb = true;
break;
case IWARP_EXCEPTION_DETECTED_REMOTE_OPERATION_ERROR:
params.event = ECORE_IWARP_EVENT_REMOTE_OPERATION_ERROR;
event_cb = true;
break;
case IWARP_EXCEPTION_DETECTED_TERMINATE_RECEIVED:
params.event = ECORE_IWARP_EVENT_TERMINATE_RECEIVED;
event_cb = true;
break;
default:
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA,
"Unhandled exception received...\n");
break;
}
if (event_cb) {
params.ep_context = ep;
params.cm_info = &ep->cm_info;
ep->event_cb(ep->cb_context, ¶ms);
}
}
static void
ecore_iwarp_tcp_connect_unsuccessful(struct ecore_hwfn *p_hwfn,
struct ecore_iwarp_ep *ep,
u8 fw_return_code)
{
struct ecore_iwarp_cm_event_params params;
OSAL_MEM_ZERO(¶ms, sizeof(params));
params.event = ECORE_IWARP_EVENT_ACTIVE_COMPLETE;
params.ep_context = ep;
params.cm_info = &ep->cm_info;
ep->state = ECORE_IWARP_EP_CLOSED;
switch (fw_return_code) {
case IWARP_CONN_ERROR_TCP_CONNECT_INVALID_PACKET:
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA,
"%s(0x%x) TCP connect got invalid packet\n",
ECORE_IWARP_CONNECT_MODE_STRING(ep),
ep->tcp_cid);
params.status = ECORE_CONN_RESET;
break;
case IWARP_CONN_ERROR_TCP_CONNECTION_RST:
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA,
"%s(0x%x) TCP Connection Reset\n",
ECORE_IWARP_CONNECT_MODE_STRING(ep),
ep->tcp_cid);
params.status = ECORE_CONN_RESET;
break;
case IWARP_CONN_ERROR_TCP_CONNECT_TIMEOUT:
DP_NOTICE(p_hwfn, false, "%s(0x%x) TCP timeout\n",
ECORE_IWARP_CONNECT_MODE_STRING(ep),
ep->tcp_cid);
params.status = ECORE_TIMEOUT;
break;
case IWARP_CONN_ERROR_MPA_NOT_SUPPORTED_VER:
DP_NOTICE(p_hwfn, false, "%s(0x%x) MPA not supported VER\n",
ECORE_IWARP_CONNECT_MODE_STRING(ep),
ep->tcp_cid);
params.status = ECORE_CONN_REFUSED;
break;
case IWARP_CONN_ERROR_MPA_INVALID_PACKET:
DP_NOTICE(p_hwfn, false, "%s(0x%x) MPA Invalid Packet\n",
ECORE_IWARP_CONNECT_MODE_STRING(ep), ep->tcp_cid);
params.status = ECORE_CONN_RESET;
break;
default:
DP_ERR(p_hwfn, "%s(0x%x) Unexpected return code tcp connect: %d\n",
ECORE_IWARP_CONNECT_MODE_STRING(ep), ep->tcp_cid,
fw_return_code);
params.status = ECORE_CONN_RESET;
break;
}
if (ep->connect_mode == TCP_CONNECT_PASSIVE) {
ep->tcp_cid = ECORE_IWARP_INVALID_TCP_CID;
ecore_iwarp_return_ep(p_hwfn, ep);
} else {
ep->event_cb(ep->cb_context, ¶ms);
OSAL_SPIN_LOCK(&p_hwfn->p_rdma_info->iwarp.iw_lock);
OSAL_LIST_REMOVE_ENTRY(&ep->list_entry,
&p_hwfn->p_rdma_info->iwarp.ep_list);
OSAL_SPIN_UNLOCK(&p_hwfn->p_rdma_info->iwarp.iw_lock);
}
}
static void
ecore_iwarp_connect_complete(struct ecore_hwfn *p_hwfn,
struct ecore_iwarp_ep *ep,
u8 fw_return_code)
{
if (ep->connect_mode == TCP_CONNECT_PASSIVE) {
/* Done with the SYN packet, post back to ll2 rx */
ecore_iwarp_ll2_post_rx(
p_hwfn, ep->syn,
p_hwfn->p_rdma_info->iwarp.ll2_syn_handle);
ep->syn = OSAL_NULL;
if (ep->state == ECORE_IWARP_EP_ABORTING)
return;
/* If connect failed - upper layer doesn't know about it */
if (fw_return_code == RDMA_RETURN_OK)
ecore_iwarp_mpa_received(p_hwfn, ep);
else
ecore_iwarp_tcp_connect_unsuccessful(p_hwfn, ep,
fw_return_code);
} else {
if (fw_return_code == RDMA_RETURN_OK)
ecore_iwarp_mpa_offload(p_hwfn, ep);
else
ecore_iwarp_tcp_connect_unsuccessful(p_hwfn, ep,
fw_return_code);
}
}
static OSAL_INLINE bool
ecore_iwarp_check_ep_ok(struct ecore_hwfn *p_hwfn,
struct ecore_iwarp_ep *ep)
{
if (ep == OSAL_NULL) {
DP_ERR(p_hwfn, "ERROR ON ASYNC ep=%p\n", ep);
return false;
}
if (ep->sig != 0xdeadbeef) {
DP_ERR(p_hwfn, "ERROR ON ASYNC ep=%p\n", ep);
return false;
}
return true;
}
static enum _ecore_status_t
ecore_iwarp_async_event(struct ecore_hwfn *p_hwfn,
u8 fw_event_code,
u16 OSAL_UNUSED echo,
union event_ring_data *data,
u8 fw_return_code)
{
struct regpair *fw_handle = &data->rdma_data.async_handle;
struct ecore_iwarp_ep *ep = OSAL_NULL;
u16 cid;
ep = (struct ecore_iwarp_ep *)(osal_uintptr_t)HILO_64(fw_handle->hi,
fw_handle->lo);
switch (fw_event_code) {
/* Async completion after TCP 3-way handshake */
case IWARP_EVENT_TYPE_ASYNC_CONNECT_COMPLETE:
if (!ecore_iwarp_check_ep_ok(p_hwfn, ep))
return ECORE_INVAL;
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA,
"EP(0x%x) IWARP_EVENT_TYPE_ASYNC_CONNECT_COMPLETE fw_ret_code=%d\n",
ep->tcp_cid, fw_return_code);
ecore_iwarp_connect_complete(p_hwfn, ep, fw_return_code);
break;
case IWARP_EVENT_TYPE_ASYNC_EXCEPTION_DETECTED:
if (!ecore_iwarp_check_ep_ok(p_hwfn, ep))
return ECORE_INVAL;
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA,
"QP(0x%x) IWARP_EVENT_TYPE_ASYNC_EXCEPTION_DETECTED fw_ret_code=%d\n",
ep->cid, fw_return_code);
ecore_iwarp_exception_received(p_hwfn, ep, fw_return_code);
break;
/* Async completion for Close Connection ramrod */
case IWARP_EVENT_TYPE_ASYNC_QP_IN_ERROR_STATE:
if (!ecore_iwarp_check_ep_ok(p_hwfn, ep))
return ECORE_INVAL;
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA,
"QP(0x%x) IWARP_EVENT_TYPE_ASYNC_QP_IN_ERROR_STATE fw_ret_code=%d\n",
ep->cid, fw_return_code);
ecore_iwarp_qp_in_error(p_hwfn, ep, fw_return_code);
break;
/* Async event for active side only */
case IWARP_EVENT_TYPE_ASYNC_ENHANCED_MPA_REPLY_ARRIVED:
if (!ecore_iwarp_check_ep_ok(p_hwfn, ep))
return ECORE_INVAL;
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA,
"QP(0x%x) IWARP_EVENT_TYPE_ASYNC_MPA_HANDSHAKE_MPA_REPLY_ARRIVED fw_ret_code=%d\n",
ep->cid, fw_return_code);
ecore_iwarp_mpa_reply_arrived(p_hwfn, ep);
break;
/* MPA Negotiations completed */
case IWARP_EVENT_TYPE_ASYNC_MPA_HANDSHAKE_COMPLETE:
if (!ecore_iwarp_check_ep_ok(p_hwfn, ep))
return ECORE_INVAL;
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA,
"QP(0x%x) IWARP_EVENT_TYPE_ASYNC_MPA_HANDSHAKE_COMPLETE fw_ret_code=%d\n",
ep->cid, fw_return_code);
ecore_iwarp_mpa_complete(p_hwfn, ep, fw_return_code);
break;
case IWARP_EVENT_TYPE_ASYNC_CID_CLEANED:
cid = (u16)OSAL_LE32_TO_CPU(fw_handle->lo);
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA,
"(0x%x)IWARP_EVENT_TYPE_ASYNC_CID_CLEANED\n",
cid);
ecore_iwarp_cid_cleaned(p_hwfn, cid);
break;
case IWARP_EVENT_TYPE_ASYNC_CQ_OVERFLOW:
DP_NOTICE(p_hwfn, false,
"IWARP_EVENT_TYPE_ASYNC_CQ_OVERFLOW\n");
p_hwfn->p_rdma_info->events.affiliated_event(
p_hwfn->p_rdma_info->events.context,
ECORE_IWARP_EVENT_CQ_OVERFLOW,
(void *)fw_handle);
break;
default:
DP_ERR(p_hwfn, "Received unexpected async iwarp event %d\n",
fw_event_code);
return ECORE_INVAL;
}
return ECORE_SUCCESS;
}
enum _ecore_status_t
ecore_iwarp_create_listen(void *rdma_cxt,
struct ecore_iwarp_listen_in *iparams,
struct ecore_iwarp_listen_out *oparams)
{
struct ecore_hwfn *p_hwfn = (struct ecore_hwfn *)rdma_cxt;
struct ecore_iwarp_listener *listener;
listener = OSAL_ZALLOC(p_hwfn->p_dev, GFP_KERNEL, sizeof(*listener));
if (!listener) {
DP_NOTICE(p_hwfn,
false,
"ecore iwarp create listener failed: cannot allocate memory (listener). rc = %d\n",
ECORE_NOMEM);
return ECORE_NOMEM;
}
listener->ip_version = iparams->ip_version;
OSAL_MEMCPY(listener->ip_addr,
iparams->ip_addr,
sizeof(listener->ip_addr));
listener->port = iparams->port;
listener->vlan = iparams->vlan;
listener->event_cb = iparams->event_cb;
listener->cb_context = iparams->cb_context;
listener->max_backlog = iparams->max_backlog;
listener->state = ECORE_IWARP_LISTENER_STATE_ACTIVE;
oparams->handle = listener;
OSAL_SPIN_LOCK_INIT(&listener->lock);
OSAL_LIST_INIT(&listener->ep_list);
OSAL_SPIN_LOCK(&p_hwfn->p_rdma_info->iwarp.iw_lock);
OSAL_LIST_PUSH_TAIL(&listener->list_entry,
&p_hwfn->p_rdma_info->iwarp.listen_list);
OSAL_SPIN_UNLOCK(&p_hwfn->p_rdma_info->iwarp.iw_lock);
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA, "callback=%p handle=%p ip=%x:%x:%x:%x port=0x%x vlan=0x%x\n",
listener->event_cb,
listener,
listener->ip_addr[0],
listener->ip_addr[1],
listener->ip_addr[2],
listener->ip_addr[3],
listener->port,
listener->vlan);
return ECORE_SUCCESS;
}
static void
ecore_iwarp_pause_complete(struct ecore_iwarp_listener *listener)
{
struct ecore_iwarp_cm_event_params params;
if (listener->state == ECORE_IWARP_LISTENER_STATE_UNPAUSE)
listener->state = ECORE_IWARP_LISTENER_STATE_ACTIVE;
params.event = ECORE_IWARP_EVENT_LISTEN_PAUSE_COMP;
listener->event_cb(listener->cb_context, ¶ms);
}
static void
ecore_iwarp_tcp_abort_comp(struct ecore_hwfn *p_hwfn, void *cookie,
union event_ring_data OSAL_UNUSED *data,
u8 OSAL_UNUSED fw_return_code)
{
struct ecore_iwarp_ep *ep = (struct ecore_iwarp_ep *)cookie;
struct ecore_iwarp_listener *listener = ep->listener;
ecore_iwarp_return_ep(p_hwfn, ep);
if (OSAL_LIST_IS_EMPTY(&listener->ep_list))
listener->done = true;
}
static void
ecore_iwarp_abort_inflight_connections(struct ecore_hwfn *p_hwfn,
struct ecore_iwarp_listener *listener)
{
struct ecore_spq_entry *p_ent = OSAL_NULL;
struct ecore_iwarp_ep *ep = OSAL_NULL;
struct ecore_sp_init_data init_data;
struct ecore_spq_comp_cb comp_data;
enum _ecore_status_t rc;
/* remove listener from list before destroying listener */
OSAL_LIST_REMOVE_ENTRY(&listener->list_entry,
&p_hwfn->p_rdma_info->iwarp.listen_list);
if (OSAL_LIST_IS_EMPTY(&listener->ep_list)) {
listener->done = true;
return;
}
OSAL_MEMSET(&init_data, 0, sizeof(init_data));
init_data.p_comp_data = &comp_data;
init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
init_data.comp_mode = ECORE_SPQ_MODE_CB;
init_data.p_comp_data->function = ecore_iwarp_tcp_abort_comp;
OSAL_LIST_FOR_EACH_ENTRY(ep, &listener->ep_list,
list_entry, struct ecore_iwarp_ep) {
ep->state = ECORE_IWARP_EP_ABORTING;
init_data.p_comp_data->cookie = ep;
init_data.cid = ep->tcp_cid;
rc = ecore_sp_init_request(p_hwfn, &p_ent,
IWARP_RAMROD_CMD_ID_ABORT_TCP_OFFLOAD,
PROTOCOLID_IWARP,
&init_data);
if (rc == ECORE_SUCCESS)
ecore_spq_post(p_hwfn, p_ent, OSAL_NULL);
}
}
static void
ecore_iwarp_listener_state_transition(struct ecore_hwfn *p_hwfn, void *cookie,
union event_ring_data OSAL_UNUSED *data,
u8 OSAL_UNUSED fw_return_code)
{
struct ecore_iwarp_listener *listener = (struct ecore_iwarp_listener *)cookie;
switch (listener->state) {
case ECORE_IWARP_LISTENER_STATE_PAUSE:
case ECORE_IWARP_LISTENER_STATE_UNPAUSE:
ecore_iwarp_pause_complete(listener);
break;
case ECORE_IWARP_LISTENER_STATE_DESTROYING:
ecore_iwarp_abort_inflight_connections(p_hwfn, listener);
break;
default:
break;
}
}
static enum _ecore_status_t
ecore_iwarp_empty_ramrod(struct ecore_hwfn *p_hwfn,
struct ecore_iwarp_listener *listener)
{
struct ecore_spq_entry *p_ent = OSAL_NULL;
struct ecore_spq_comp_cb comp_data;
struct ecore_sp_init_data init_data;
enum _ecore_status_t rc;
OSAL_MEMSET(&init_data, 0, sizeof(init_data));
init_data.p_comp_data = &comp_data;
init_data.cid = ecore_spq_get_cid(p_hwfn);
init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
init_data.comp_mode = ECORE_SPQ_MODE_CB;
init_data.p_comp_data->function = ecore_iwarp_listener_state_transition;
init_data.p_comp_data->cookie = listener;
rc = ecore_sp_init_request(p_hwfn, &p_ent,
COMMON_RAMROD_EMPTY,
PROTOCOLID_COMMON,
&init_data);
if (rc != ECORE_SUCCESS)
return rc;
rc = ecore_spq_post(p_hwfn, p_ent, OSAL_NULL);
if (rc != ECORE_SUCCESS)
return rc;
return rc;
}
enum _ecore_status_t
ecore_iwarp_pause_listen(void *rdma_cxt, void *handle,
bool pause, bool comp)
{
struct ecore_hwfn *p_hwfn = (struct ecore_hwfn *)rdma_cxt;
struct ecore_iwarp_listener *listener =
(struct ecore_iwarp_listener *)handle;
enum _ecore_status_t rc;
listener->state = pause ?
ECORE_IWARP_LISTENER_STATE_PAUSE :
ECORE_IWARP_LISTENER_STATE_UNPAUSE;
if (!comp)
return ECORE_SUCCESS;
rc = ecore_iwarp_empty_ramrod(p_hwfn, listener);
if (rc != ECORE_SUCCESS)
return rc;
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA, "listener=%p, state=%d\n",
listener, listener->state);
return ECORE_PENDING;
}
enum _ecore_status_t
ecore_iwarp_destroy_listen(void *rdma_cxt, void *handle)
{
struct ecore_hwfn *p_hwfn = (struct ecore_hwfn *)rdma_cxt;
struct ecore_iwarp_listener *listener =
(struct ecore_iwarp_listener *)handle;
enum _ecore_status_t rc;
int wait_count = 0;
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA, "handle=%p\n", handle);
listener->state = ECORE_IWARP_LISTENER_STATE_DESTROYING;
rc = ecore_iwarp_empty_ramrod(p_hwfn, listener);
if (rc != ECORE_SUCCESS)
return rc;
while (!listener->done) {
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA,
"Waiting for ep list to be empty...\n");
OSAL_MSLEEP(100);
if (wait_count++ > 200) {
DP_NOTICE(p_hwfn, false, "ep list close timeout\n");
break;
}
}
OSAL_FREE(p_hwfn->p_dev, listener);
return ECORE_SUCCESS;
}
enum _ecore_status_t
ecore_iwarp_send_rtr(void *rdma_cxt, struct ecore_iwarp_send_rtr_in *iparams)
{
struct ecore_hwfn *p_hwfn = (struct ecore_hwfn *)rdma_cxt;
struct ecore_sp_init_data init_data;
struct ecore_spq_entry *p_ent;
struct ecore_rdma_qp *qp;
struct ecore_iwarp_ep *ep;
enum _ecore_status_t rc;
ep = (struct ecore_iwarp_ep *)iparams->ep_context;
if (!ep) {
DP_ERR(p_hwfn, "Ep Context receive in send_rtr is NULL\n");
return ECORE_INVAL;
}
qp = ep->qp;
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA, "QP(0x%x) EP(0x%x)\n",
qp->icid, ep->tcp_cid);
OSAL_MEMSET(&init_data, 0, sizeof(init_data));
init_data.cid = qp->icid;
init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
init_data.comp_mode = ECORE_SPQ_MODE_CB;
rc = ecore_sp_init_request(p_hwfn, &p_ent,
IWARP_RAMROD_CMD_ID_MPA_OFFLOAD_SEND_RTR,
PROTOCOLID_IWARP, &init_data);
if (rc != ECORE_SUCCESS)
return rc;
rc = ecore_spq_post(p_hwfn, p_ent, OSAL_NULL);
DP_VERBOSE(p_hwfn, ECORE_MSG_RDMA, "ecore_iwarp_send_rtr, rc = 0x%x\n",
rc);
return rc;
}
enum _ecore_status_t
ecore_iwarp_query_qp(struct ecore_rdma_qp *qp,
struct ecore_rdma_query_qp_out_params *out_params)
{
out_params->state = ecore_iwarp2roce_state(qp->iwarp_state);
return ECORE_SUCCESS;
}
#ifdef _NTDDK_
#pragma warning(pop)
#endif