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qed: iWARP CM add active side connect 

This patch implements the active side connect.
Offload a connection, process MPA reply and send RTR.
In some of the common passive/active functions, the active side
will work in blocking mode.

Signed-off-by: Michal Kalderon <Michal.Kalderon@cavium.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: Ariel Elior <Ariel.Elior@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Kalderon, Michal 2017-07-02 10:29:28 +03:00 committed by David S. Miller
parent 456a584947
commit 4b0fdd7c8b
4 changed files with 265 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

226
drivers/net/ethernet/qlogic/qed/qed_iwarp.c
View File

@ -611,7 +611,10 @@ qed_iwarp_tcp_offload(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep)
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 = QED_SPQ_MODE_CB;
else
init_data.comp_mode = QED_SPQ_MODE_EBLOCK;
rc = qed_sp_init_request(p_hwfn, &p_ent,
IWARP_RAMROD_CMD_ID_TCP_OFFLOAD,
@ -711,7 +714,7 @@ qed_iwarp_mpa_received(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep)
DP_VERBOSE(p_hwfn, QED_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)));
mpa_rev, *((u32 *)(ep->ep_buffer_virt->in_pdata)));
if (mpa_rev == MPA_NEGOTIATION_TYPE_ENHANCED) {
/* Read ord/ird values from private data buffer */
@ -801,6 +804,9 @@ qed_iwarp_mpa_offload(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep)
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)
init_data.comp_mode = QED_SPQ_MODE_CB;
else
init_data.comp_mode = QED_SPQ_MODE_EBLOCK;
rc = qed_sp_init_request(p_hwfn, &p_ent,
@ -890,6 +896,59 @@ qed_iwarp_return_ep(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep)
spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
}
void
qed_iwarp_parse_private_data(struct qed_hwfn *p_hwfn, struct qed_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 *)(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);
}
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;
}
void
qed_iwarp_mpa_reply_arrived(struct qed_hwfn *p_hwfn, struct qed_iwarp_ep *ep)
{
struct qed_iwarp_cm_event_params params;
if (ep->connect_mode == TCP_CONNECT_PASSIVE) {
DP_NOTICE(p_hwfn,
"MPA reply event not expected on passive side!\n");
return;
}
params.event = QED_IWARP_EVENT_ACTIVE_MPA_REPLY;
qed_iwarp_parse_private_data(p_hwfn, ep);
DP_VERBOSE(p_hwfn, QED_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 = 0;
ep->mpa_reply_processed = true;
ep->event_cb(ep->cb_context, &params);
}
#define QED_IWARP_CONNECT_MODE_STRING(ep) \
((ep)->connect_mode == TCP_CONNECT_PASSIVE) ? "Passive" : "Active"
@ -902,8 +961,14 @@ qed_iwarp_mpa_complete(struct qed_hwfn *p_hwfn,
{
struct qed_iwarp_cm_event_params params;
if (ep->connect_mode == TCP_CONNECT_ACTIVE)
params.event = QED_IWARP_EVENT_ACTIVE_COMPLETE;
else
params.event = QED_IWARP_EVENT_PASSIVE_COMPLETE;
if (ep->connect_mode == TCP_CONNECT_ACTIVE && !ep->mpa_reply_processed)
qed_iwarp_parse_private_data(p_hwfn, ep);
DP_VERBOSE(p_hwfn, QED_MSG_RDMA,
"MPA_NEGOTIATE (v%d): ORD: 0x%x IRD: 0x%x\n",
ep->mpa_rev, ep->cm_info.ord, ep->cm_info.ird);
@ -977,6 +1042,102 @@ qed_iwarp_mpa_v2_set_private(struct qed_hwfn *p_hwfn,
}
}
int qed_iwarp_connect(void *rdma_cxt,
struct qed_iwarp_connect_in *iparams,
struct qed_iwarp_connect_out *oparams)
{
struct qed_hwfn *p_hwfn = rdma_cxt;
struct qed_iwarp_info *iwarp_info;
struct qed_iwarp_ep *ep;
u8 mpa_data_size = 0;
u8 ts_hdr_size = 0;
u32 cid;
int rc;
if ((iparams->cm_info.ord > QED_IWARP_ORD_DEFAULT) ||
(iparams->cm_info.ird > QED_IWARP_IRD_DEFAULT)) {
DP_NOTICE(p_hwfn,
"QP(0x%x) ERROR: Invalid ord(0x%x)/ird(0x%x)\n",
iparams->qp->icid, iparams->cm_info.ord,
iparams->cm_info.ird);
return -EINVAL;
}
iwarp_info = &p_hwfn->p_rdma_info->iwarp;
/* Allocate ep object */
rc = qed_iwarp_alloc_cid(p_hwfn, &cid);
if (rc)
return rc;
rc = qed_iwarp_create_ep(p_hwfn, &ep);
if (rc)
goto err;
ep->tcp_cid = cid;
spin_lock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
list_add_tail(&ep->list_entry, &p_hwfn->p_rdma_info->iwarp.ep_list);
spin_unlock_bh(&p_hwfn->p_rdma_info->iwarp.iw_lock);
ep->qp = iparams->qp;
ep->qp->ep = ep;
ether_addr_copy(ep->remote_mac_addr, iparams->remote_mac_addr);
ether_addr_copy(ep->local_mac_addr, iparams->local_mac_addr);
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)
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;
qed_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->cm_info.private_data_len +
mpa_data_size;
memcpy((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 & QED_IWARP_TS_EN)
ts_hdr_size = TIMESTAMP_HEADER_SIZE;
ep->mss = iparams->mss - ts_hdr_size;
ep->mss = min_t(u16, QED_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 = qed_iwarp_tcp_offload(p_hwfn, ep);
DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x) EP(0x%x) rc = %d\n",
iparams->qp->icid, ep->tcp_cid, rc);
if (rc) {
qed_iwarp_destroy_ep(p_hwfn, ep, true);
goto err;
}
return rc;
err:
qed_iwarp_cid_cleaned(p_hwfn, cid);
return rc;
}
static struct qed_iwarp_ep *qed_iwarp_get_free_ep(struct qed_hwfn *p_hwfn)
{
struct qed_iwarp_ep *ep = NULL;
@ -1174,12 +1335,12 @@ void qed_iwarp_resc_free(struct qed_hwfn *p_hwfn)
int qed_iwarp_accept(void *rdma_cxt, struct qed_iwarp_accept_in *iparams)
{
struct qed_hwfn *p_hwfn = (struct qed_hwfn *)rdma_cxt;
struct qed_hwfn *p_hwfn = rdma_cxt;
struct qed_iwarp_ep *ep;
u8 mpa_data_size = 0;
int rc;
ep = (struct qed_iwarp_ep *)iparams->ep_context;
ep = iparams->ep_context;
if (!ep) {
DP_ERR(p_hwfn, "Ep Context receive in accept is NULL\n");
return -EINVAL;
@ -1799,13 +1960,19 @@ void
qed_iwarp_connect_complete(struct qed_hwfn *p_hwfn,
struct qed_iwarp_ep *ep, u8 fw_return_code)
{
u8 ll2_syn_handle = p_hwfn->p_rdma_info->iwarp.ll2_syn_handle;
if (ep->connect_mode == TCP_CONNECT_PASSIVE) {
/* Done with the SYN packet, post back to ll2 rx */
qed_iwarp_ll2_post_rx(p_hwfn, ep->syn,
p_hwfn->p_rdma_info->iwarp.ll2_syn_handle);
qed_iwarp_ll2_post_rx(p_hwfn, ep->syn, ll2_syn_handle);
ep->syn = NULL;
/* If connect failed - upper layer doesn't know about it */
qed_iwarp_mpa_received(p_hwfn, ep);
} else {
qed_iwarp_mpa_offload(p_hwfn, ep);
}
}
static inline bool
@ -1842,6 +2009,16 @@ static int qed_iwarp_async_event(struct qed_hwfn *p_hwfn,
ep->tcp_cid, fw_return_code);
qed_iwarp_connect_complete(p_hwfn, ep, fw_return_code);
break;
/* Async event for active side only */
case IWARP_EVENT_TYPE_ASYNC_ENHANCED_MPA_REPLY_ARRIVED:
if (!qed_iwarp_check_ep_ok(p_hwfn, ep))
return -EINVAL;
DP_VERBOSE(p_hwfn,
QED_MSG_RDMA,
"QP(0x%x) IWARP_EVENT_TYPE_ASYNC_MPA_HANDSHAKE_MPA_REPLY_ARRIVED fw_ret_code=%d\n",
ep->cid, fw_return_code);
qed_iwarp_mpa_reply_arrived(p_hwfn, ep);
break;
case IWARP_EVENT_TYPE_ASYNC_MPA_HANDSHAKE_COMPLETE:
if (!qed_iwarp_check_ep_ok(p_hwfn, ep))
return -EINVAL;
@ -1918,6 +2095,45 @@ int qed_iwarp_destroy_listen(void *rdma_cxt, void *handle)
return 0;
}
int qed_iwarp_send_rtr(void *rdma_cxt, struct qed_iwarp_send_rtr_in *iparams)
{
struct qed_hwfn *p_hwfn = rdma_cxt;
struct qed_sp_init_data init_data;
struct qed_spq_entry *p_ent;
struct qed_iwarp_ep *ep;
struct qed_rdma_qp *qp;
int rc;
ep = iparams->ep_context;
if (!ep) {
DP_ERR(p_hwfn, "Ep Context receive in send_rtr is NULL\n");
return -EINVAL;
}
qp = ep->qp;
DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "QP(0x%x) EP(0x%x)\n",
qp->icid, ep->tcp_cid);
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 = QED_SPQ_MODE_CB;
rc = qed_sp_init_request(p_hwfn, &p_ent,
IWARP_RAMROD_CMD_ID_MPA_OFFLOAD_SEND_RTR,
PROTOCOLID_IWARP, &init_data);
if (rc)
return rc;
rc = qed_spq_post(p_hwfn, p_ent, NULL);
DP_VERBOSE(p_hwfn, QED_MSG_RDMA, "rc = 0x%x\n", rc);
return rc;
}
void
qed_iwarp_query_qp(struct qed_rdma_qp *qp,
struct qed_rdma_query_qp_out_params *out_params)

7
drivers/net/ethernet/qlogic/qed/qed_iwarp.h
View File

@ -169,6 +169,11 @@ int qed_iwarp_fw_destroy(struct qed_hwfn *p_hwfn, struct qed_rdma_qp *qp);
void qed_iwarp_query_qp(struct qed_rdma_qp *qp,
struct qed_rdma_query_qp_out_params *out_params);
int
qed_iwarp_connect(void *rdma_cxt,
struct qed_iwarp_connect_in *iparams,
struct qed_iwarp_connect_out *oparams);
int
qed_iwarp_create_listen(void *rdma_cxt,
struct qed_iwarp_listen_in *iparams,
@ -179,4 +184,6 @@ int qed_iwarp_accept(void *rdma_cxt, struct qed_iwarp_accept_in *iparams);
int qed_iwarp_reject(void *rdma_cxt, struct qed_iwarp_reject_in *iparams);
int qed_iwarp_destroy_listen(void *rdma_cxt, void *handle);
int qed_iwarp_send_rtr(void *rdma_cxt, struct qed_iwarp_send_rtr_in *iparams);
#endif

4
drivers/net/ethernet/qlogic/qed/qed_rdma.c
View File

@ -1772,8 +1772,12 @@ static const struct qed_rdma_ops qed_rdma_ops_pass = {
.ll2_set_fragment_of_tx_packet = &qed_ll2_set_fragment_of_tx_packet,
.ll2_set_mac_filter = &qed_roce_ll2_set_mac_filter,
.ll2_get_stats = &qed_ll2_get_stats,
.iwarp_connect = &qed_iwarp_connect,
.iwarp_create_listen = &qed_iwarp_create_listen,
.iwarp_destroy_listen = &qed_iwarp_destroy_listen,
.iwarp_accept = &qed_iwarp_accept,
.iwarp_reject = &qed_iwarp_reject,
.iwarp_send_rtr = &qed_iwarp_send_rtr,
};
const struct qed_rdma_ops *qed_get_rdma_ops(void)

26
include/linux/qed/qed_rdma_if.h
View File

@ -473,6 +473,8 @@ struct qed_rdma_counters_out_params {
enum qed_iwarp_event_type {
QED_IWARP_EVENT_MPA_REQUEST, /* Passive side request received */
QED_IWARP_EVENT_PASSIVE_COMPLETE, /* ack on mpa response */
QED_IWARP_EVENT_ACTIVE_COMPLETE, /* Active side reply received */
QED_IWARP_EVENT_ACTIVE_MPA_REPLY,
};
enum qed_tcp_ip_version {
@ -503,6 +505,20 @@ struct qed_iwarp_cm_event_params {
typedef int (*iwarp_event_handler) (void *context,
struct qed_iwarp_cm_event_params *event);
struct qed_iwarp_connect_in {
iwarp_event_handler event_cb;
void *cb_context;
struct qed_rdma_qp *qp;
struct qed_iwarp_cm_info cm_info;
u16 mss;
u8 remote_mac_addr[ETH_ALEN];
u8 local_mac_addr[ETH_ALEN];
};
struct qed_iwarp_connect_out {
void *ep_context;
};
struct qed_iwarp_listen_in {
iwarp_event_handler event_cb;
void *cb_context; /* passed to event_cb */
@ -534,6 +550,10 @@ struct qed_iwarp_reject_in {
u16 private_data_len;
};
struct qed_iwarp_send_rtr_in {
void *ep_context;
};
struct qed_roce_ll2_header {
void *vaddr;
dma_addr_t baddr;
@ -640,6 +660,10 @@ struct qed_rdma_ops {
int (*ll2_set_mac_filter)(struct qed_dev *cdev,
u8 *old_mac_address, u8 *new_mac_address);
int (*iwarp_connect)(void *rdma_cxt,
struct qed_iwarp_connect_in *iparams,
struct qed_iwarp_connect_out *oparams);
int (*iwarp_create_listen)(void *rdma_cxt,
struct qed_iwarp_listen_in *iparams,
struct qed_iwarp_listen_out *oparams);
@ -652,6 +676,8 @@ struct qed_rdma_ops {
int (*iwarp_destroy_listen)(void *rdma_cxt, void *handle);
int (*iwarp_send_rtr)(void *rdma_cxt,
struct qed_iwarp_send_rtr_in *iparams);
};
const struct qed_rdma_ops *qed_get_rdma_ops(void);