#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <uct/api/uct.h>
#include <uct/ib/base/ib_iface.h>
#include <uct/base/uct_md.h>
#include <uct/base/uct_log.h>
#include <ucs/debug/log.h>
#include <ucs/debug/memtrack_int.h>
#include <ucs/type/class.h>
#include <string.h>
#include <arpa/inet.h>
#include <uct/ib/base/ib_log.h>
#include <uct/ib/ud/base/ud_iface.h>
#include <uct/ib/ud/base/ud_ep.h>
#include <uct/ib/ud/base/ud_def.h>
#include "ud_verbs.h"
#include "ucs/sys/math.h"
#include <uct/ib/ud/base/ud_inl.h>
static UCS_F_NOINLINE void
uct_ud_verbs_iface_post_recv_always(uct_ud_verbs_iface_t *iface, int max);
static inline void
uct_ud_verbs_iface_post_recv(uct_ud_verbs_iface_t *iface);
static ucs_config_field_t uct_ud_verbs_iface_config_table[] = {
{"UD_", "", NULL,
0, UCS_CONFIG_TYPE_TABLE(uct_ud_iface_config_table)},
{NULL}
};
UCS_CLASS_INIT_FUNC(uct_ud_verbs_ep_t, const uct_ep_params_t *params)
{
uct_ud_verbs_iface_t *iface = ucs_derived_of(params->iface,
uct_ud_verbs_iface_t);
ucs_trace_func("");
UCS_CLASS_CALL_SUPER_INIT(uct_ud_ep_t, &iface->super, params);
self->peer_address.ah = NULL;
return UCS_OK;
}
static UCS_CLASS_CLEANUP_FUNC(uct_ud_verbs_ep_t)
{
ucs_trace_func("");
}
UCS_CLASS_DEFINE(uct_ud_verbs_ep_t, uct_ud_ep_t);
static UCS_CLASS_DEFINE_NEW_FUNC(uct_ud_verbs_ep_t, uct_ep_t,
const uct_ep_params_t *);
UCS_CLASS_DEFINE_DELETE_FUNC(uct_ud_verbs_ep_t, uct_ep_t);
static inline void
uct_ud_verbs_post_send(uct_ud_verbs_iface_t *iface, uct_ud_verbs_ep_t *ep,
struct ibv_send_wr *wr, unsigned send_flags,
unsigned max_log_sge)
{
struct ibv_send_wr *bad_wr;
int UCS_V_UNUSED ret;
if ((send_flags & IBV_SEND_SIGNALED) ||
(iface->super.tx.unsignaled >= (UCT_UD_TX_MODERATION - 1))) {
wr->send_flags = send_flags | IBV_SEND_SIGNALED;
wr->wr_id = iface->super.tx.unsignaled;
iface->super.tx.unsignaled = 0;
} else {
wr->send_flags = send_flags;
#if UCS_ENABLE_ASSERT
wr->wr_id = UINT64_MAX;
#endif
++iface->super.tx.unsignaled;
}
wr->wr.ud.remote_qpn = ep->peer_address.dest_qpn;
wr->wr.ud.ah = ep->peer_address.ah;
UCT_UD_EP_HOOK_CALL_TX(&ep->super, (uct_ud_neth_t*)iface->tx.sge[0].addr);
ret = ibv_post_send(iface->super.qp, wr, &bad_wr);
ucs_assertv(ret == 0, "ibv_post_send() returned %d (%m)", ret);
uct_ib_log_post_send(&iface->super.super, iface->super.qp, wr, max_log_sge,
uct_ud_dump_packet);
--iface->super.tx.available;
++iface->tx.send_sn;
}
static inline void
uct_ud_verbs_ep_tx_inlv(uct_ud_verbs_iface_t *iface, uct_ud_verbs_ep_t *ep,
const void *buffer, unsigned length)
{
iface->tx.sge[1].addr = (uintptr_t)buffer;
iface->tx.sge[1].length = length;
iface->tx.wr_inl.num_sge = 2;
uct_ud_verbs_post_send(iface, ep, &iface->tx.wr_inl, IBV_SEND_INLINE, 2);
}
static inline void
uct_ud_verbs_ep_tx_skb(uct_ud_verbs_iface_t *iface, uct_ud_verbs_ep_t *ep,
uct_ud_send_skb_t *skb, unsigned send_flags,
unsigned max_log_sge)
{
iface->tx.sge[0].lkey = skb->lkey;
iface->tx.sge[0].length = skb->len;
iface->tx.sge[0].addr = (uintptr_t)skb->neth;
uct_ud_verbs_post_send(iface, ep, &iface->tx.wr_skb, send_flags, max_log_sge);
}
static uint16_t
uct_ud_verbs_ep_send_ctl(uct_ud_ep_t *ud_ep, uct_ud_send_skb_t *skb,
const uct_ud_iov_t *iov, uint16_t iovcnt, int flags,
int max_log_sge)
{
uct_ud_verbs_iface_t *iface = ucs_derived_of(ud_ep->super.super.iface,
uct_ud_verbs_iface_t);
uct_ud_verbs_ep_t *ep = ucs_derived_of(ud_ep, uct_ud_verbs_ep_t);
unsigned send_flags;
uint16_t iov_index;
send_flags = 0;
if ((skb->len <= iface->super.config.max_inline) && (iovcnt == 0)) {
send_flags |= IBV_SEND_INLINE;
} else {
ucs_assert(!(flags & UCT_UD_IFACE_SEND_CTL_FLAG_INLINE));
}
if (flags & UCT_UD_IFACE_SEND_CTL_FLAG_SOLICITED) {
send_flags |= IBV_SEND_SOLICITED;
}
if (flags & UCT_UD_IFACE_SEND_CTL_FLAG_SIGNALED) {
send_flags |= IBV_SEND_SIGNALED;
}
for (iov_index = 0; iov_index < iovcnt; ++iov_index) {
iface->tx.sge[iov_index + 1].addr = (uintptr_t)iov[iov_index].buffer;
iface->tx.sge[iov_index + 1].length = iov[iov_index].length;
iface->tx.sge[iov_index + 1].lkey = iov[iov_index].lkey;
}
iface->tx.wr_skb.num_sge = iovcnt + 1;
uct_ud_verbs_ep_tx_skb(iface, ep, skb, send_flags, max_log_sge);
iface->tx.wr_skb.num_sge = 1;
return iface->tx.send_sn;
}
static
ucs_status_t uct_ud_verbs_ep_am_short(uct_ep_h tl_ep, uint8_t id, uint64_t hdr,
const void *buffer, unsigned length)
{
uct_ud_verbs_ep_t *ep = ucs_derived_of(tl_ep, uct_ud_verbs_ep_t);
uct_ud_verbs_iface_t *iface = ucs_derived_of(tl_ep->iface,
uct_ud_verbs_iface_t);
uct_ud_send_skb_t *skb;
uct_ud_am_short_hdr_t *am_hdr;
ucs_status_t status;
UCT_CHECK_LENGTH(sizeof(uct_ud_neth_t) + sizeof(hdr) + length,
0, iface->super.config.max_inline, "am_short");
uct_ud_enter(&iface->super);
status = uct_ud_am_skb_common(&iface->super, &ep->super, id, &skb);
if (status != UCS_OK) {
uct_ud_leave(&iface->super);
return status;
}
am_hdr = (uct_ud_am_short_hdr_t *)(skb->neth+1);
am_hdr->hdr = hdr;
iface->tx.sge[0].length = sizeof(uct_ud_neth_t) + sizeof(*am_hdr);
iface->tx.sge[0].addr = (uintptr_t)skb->neth;
uct_ud_verbs_ep_tx_inlv(iface, ep, buffer, length);
skb->len = iface->tx.sge[0].length;
uct_ud_iface_complete_tx_inl(&iface->super, &ep->super, skb,
am_hdr+1, buffer, length);
UCT_TL_EP_STAT_OP(&ep->super.super, AM, SHORT, sizeof(hdr) + length);
uct_ud_leave(&iface->super);
return UCS_OK;
}
static ucs_status_t uct_ud_verbs_ep_am_short_iov(uct_ep_h tl_ep, uint8_t id,
const uct_iov_t *iov, size_t iovcnt)
{
uct_ud_verbs_ep_t *ep = ucs_derived_of(tl_ep, uct_ud_verbs_ep_t);
uct_ud_verbs_iface_t *iface = ucs_derived_of(tl_ep->iface, uct_ud_verbs_iface_t);
uct_ud_send_skb_t *skb;
ucs_status_t status;
UCT_CHECK_IOV_SIZE(iovcnt, (size_t)iface->config.max_send_sge,
"uct_ud_verbs_ep_am_short_iov");
UCT_CHECK_LENGTH(sizeof(uct_ud_neth_t) + uct_iov_total_length(iov, iovcnt), 0,
iface->super.config.max_inline, "am_short");
uct_ud_enter(&iface->super);
status = uct_ud_am_skb_common(&iface->super, &ep->super, id, &skb);
if (status != UCS_OK) {
uct_ud_leave(&iface->super);
return status;
}
skb->len = iface->tx.sge[0].length = sizeof(uct_ud_neth_t);
iface->tx.sge[0].addr = (uintptr_t)skb->neth;
iface->tx.wr_inl.num_sge = uct_ib_verbs_sge_fill_iov(iface->tx.sge + 1,
iov, iovcnt) + 1;
uct_ud_verbs_post_send(iface, ep, &iface->tx.wr_inl, IBV_SEND_INLINE,
iface->tx.wr_inl.num_sge);
uct_ud_iov_to_skb(skb, iov, iovcnt);
uct_ud_iface_complete_tx_skb(&iface->super, &ep->super, skb);
UCT_TL_EP_STAT_OP(&ep->super.super, AM, SHORT, uct_iov_total_length(iov, iovcnt));
uct_ud_leave(&iface->super);
return UCS_OK;
}
static ssize_t uct_ud_verbs_ep_am_bcopy(uct_ep_h tl_ep, uint8_t id,
uct_pack_callback_t pack_cb, void *arg,
unsigned flags)
{
uct_ud_verbs_ep_t *ep = ucs_derived_of(tl_ep, uct_ud_verbs_ep_t);
uct_ud_verbs_iface_t *iface = ucs_derived_of(tl_ep->iface,
uct_ud_verbs_iface_t);
uct_ud_send_skb_t *skb;
ucs_status_t status;
size_t length;
uct_ud_enter(&iface->super);
status = uct_ud_am_skb_common(&iface->super, &ep->super, id, &skb);
if (status != UCS_OK) {
uct_ud_leave(&iface->super);
return status;
}
length = uct_ud_skb_bcopy(skb, pack_cb, arg);
UCT_UD_CHECK_BCOPY_LENGTH(&iface->super, length);
ucs_assert(iface->tx.wr_skb.num_sge == 1);
uct_ud_verbs_ep_tx_skb(iface, ep, skb, 0, INT_MAX);
uct_ud_iface_complete_tx_skb(&iface->super, &ep->super, skb);
UCT_TL_EP_STAT_OP(&ep->super.super, AM, BCOPY, length);
uct_ud_leave(&iface->super);
return length;
}
static ucs_status_t
uct_ud_verbs_ep_am_zcopy(uct_ep_h tl_ep, uint8_t id, const void *header,
unsigned header_length, const uct_iov_t *iov,
size_t iovcnt, unsigned flags, uct_completion_t *comp)
{
uct_ud_verbs_ep_t *ep = ucs_derived_of(tl_ep, uct_ud_verbs_ep_t);
uct_ud_verbs_iface_t *iface = ucs_derived_of(tl_ep->iface,
uct_ud_verbs_iface_t);
uct_ud_send_skb_t *skb;
ucs_status_t status;
UCT_CHECK_IOV_SIZE(iovcnt, (size_t)iface->config.max_send_sge,
"uct_ud_verbs_ep_am_zcopy");
UCT_CHECK_LENGTH(sizeof(uct_ud_neth_t) + sizeof(uct_ud_zcopy_desc_t) + header_length,
0, iface->super.super.config.seg_size, "am_zcopy header");
UCT_UD_CHECK_ZCOPY_LENGTH(&iface->super, header_length,
uct_iov_total_length(iov, iovcnt));
uct_ud_enter(&iface->super);
status = uct_ud_am_skb_common(&iface->super, &ep->super, id, &skb);
if (status != UCS_OK) {
uct_ud_leave(&iface->super);
return status;
}
skb->neth->packet_type |= UCT_UD_PACKET_FLAG_ACK_REQ;
memcpy(skb->neth + 1, header, header_length);
skb->len = sizeof(uct_ud_neth_t) + header_length;
iface->tx.wr_skb.num_sge = uct_ib_verbs_sge_fill_iov(iface->tx.sge + 1,
iov, iovcnt) + 1;
uct_ud_verbs_ep_tx_skb(iface, ep, skb, 0,
UCT_IB_MAX_ZCOPY_LOG_SGE(&iface->super.super));
iface->tx.wr_skb.num_sge = 1;
uct_ud_skb_set_zcopy_desc(skb, iov, iovcnt, comp);
uct_ud_iface_complete_tx_skb(&iface->super, &ep->super, skb);
UCT_TL_EP_STAT_OP(&ep->super.super, AM, ZCOPY, header_length +
uct_iov_total_length(iov, iovcnt));
uct_ud_leave(&iface->super);
return UCS_INPROGRESS;
}
static
ucs_status_t uct_ud_verbs_ep_put_short(uct_ep_h tl_ep,
const void *buffer, unsigned length,
uint64_t remote_addr, uct_rkey_t rkey)
{
uct_ud_verbs_ep_t *ep = ucs_derived_of(tl_ep, uct_ud_verbs_ep_t);
uct_ud_verbs_iface_t *iface = ucs_derived_of(tl_ep->iface,
uct_ud_verbs_iface_t);
uct_ud_send_skb_t *skb;
uct_ud_put_hdr_t *put_hdr;
uct_ud_neth_t *neth;
UCT_CHECK_LENGTH(sizeof(*neth) + sizeof(*put_hdr) + length,
0, iface->super.config.max_inline, "put_short");
uct_ud_enter(&iface->super);
skb = uct_ud_ep_get_tx_skb(&iface->super, &ep->super);
if (!skb) {
uct_ud_leave(&iface->super);
return UCS_ERR_NO_RESOURCE;
}
neth = skb->neth;
uct_ud_neth_init_data(&ep->super, neth);
uct_ud_neth_set_type_put(&ep->super, neth);
uct_ud_neth_ack_req(&ep->super, neth);
put_hdr = (uct_ud_put_hdr_t *)(neth+1);
put_hdr->rva = remote_addr;
iface->tx.sge[0].addr = (uintptr_t)neth;
iface->tx.sge[0].length = sizeof(*neth) + sizeof(*put_hdr);
uct_ud_verbs_ep_tx_inlv(iface, ep, buffer, length);
skb->len = iface->tx.sge[0].length;
uct_ud_iface_complete_tx_inl(&iface->super, &ep->super, skb,
put_hdr+1, buffer, length);
UCT_TL_EP_STAT_OP(&ep->super.super, PUT, SHORT, length);
uct_ud_leave(&iface->super);
return UCS_OK;
}
static UCS_F_ALWAYS_INLINE unsigned
uct_ud_verbs_iface_poll_tx(uct_ud_verbs_iface_t *iface, int is_async)
{
unsigned num_completed;
struct ibv_wc wc;
int ret;
ret = ibv_poll_cq(iface->super.super.cq[UCT_IB_DIR_TX], 1, &wc);
if (ucs_unlikely(ret < 0)) {
ucs_fatal("Failed to poll send CQ");
return 0;
}
if (ret == 0) {
return 0;
}
if (ucs_unlikely(wc.status != IBV_WC_SUCCESS)) {
ucs_fatal("Send completion (wr_id=0x%0X with error: %s ",
(unsigned)wc.wr_id, ibv_wc_status_str(wc.status));
return 0;
}
num_completed = wc.wr_id + 1;
ucs_assertv(num_completed <= UCT_UD_TX_MODERATION, "num_compeleted=%u",
num_completed);
iface->super.tx.available += num_completed;
iface->tx.comp_sn += num_completed;
uct_ud_iface_send_completion(&iface->super, iface->tx.comp_sn, is_async);
return 1;
}
static UCS_F_ALWAYS_INLINE unsigned
uct_ud_verbs_iface_poll_rx(uct_ud_verbs_iface_t *iface, int is_async)
{
unsigned num_wcs = iface->super.super.config.rx_max_poll;
struct ibv_wc wc[num_wcs];
ucs_status_t status;
void *packet;
int i;
status = uct_ib_poll_cq(iface->super.super.cq[UCT_IB_DIR_RX], &num_wcs, wc);
if (status != UCS_OK) {
num_wcs = 0;
goto out;
}
UCT_IB_IFACE_VERBS_FOREACH_RXWQE(&iface->super.super, i, packet, wc, num_wcs) {
if (!uct_ud_iface_check_grh(&iface->super, packet,
wc[i].wc_flags & IBV_WC_GRH, wc[i].sl)) {
ucs_mpool_put_inline((void*)wc[i].wr_id);
continue;
}
uct_ib_log_recv_completion(&iface->super.super, &wc[i], packet,
wc[i].byte_len, uct_ud_dump_packet);
uct_ud_ep_process_rx(&iface->super,
(uct_ud_neth_t *)UCS_PTR_BYTE_OFFSET(packet, UCT_IB_GRH_LEN),
wc[i].byte_len - UCT_IB_GRH_LEN,
(uct_ud_recv_skb_t *)wc[i].wr_id,
is_async);
}
iface->super.rx.available += num_wcs;
out:
uct_ud_verbs_iface_post_recv(iface);
return num_wcs;
}
static unsigned uct_ud_verbs_iface_async_progress(uct_ud_iface_t *ud_iface)
{
uct_ud_verbs_iface_t *iface = ucs_derived_of(ud_iface, uct_ud_verbs_iface_t);
unsigned count, n;
count = 0;
do {
n = uct_ud_verbs_iface_poll_rx(iface, 1);
count += n;
} while ((n > 0) && (count < iface->super.rx.async_max_poll));
count += uct_ud_verbs_iface_poll_tx(iface, 1);
uct_ud_iface_progress_pending(&iface->super, 1);
return count;
}
static unsigned uct_ud_verbs_iface_progress(uct_iface_h tl_iface)
{
uct_ud_verbs_iface_t *iface = ucs_derived_of(tl_iface, uct_ud_verbs_iface_t);
unsigned count;
uct_ud_enter(&iface->super);
count = uct_ud_iface_dispatch_async_comps(&iface->super, NULL);
count += uct_ud_iface_dispatch_pending_rx(&iface->super);
if (ucs_likely(count == 0)) {
count = uct_ud_verbs_iface_poll_rx(iface, 0);
if (count == 0) {
count += uct_ud_verbs_iface_poll_tx(iface, 0);
}
}
uct_ud_iface_progress_pending(&iface->super, 0);
uct_ud_leave(&iface->super);
return count;
}
static ucs_status_t
uct_ud_verbs_iface_query(uct_iface_h tl_iface, uct_iface_attr_t *iface_attr)
{
uct_ud_verbs_iface_t *iface = ucs_derived_of(tl_iface, uct_ud_verbs_iface_t);
size_t am_max_hdr;
ucs_status_t status;
ucs_trace_func("");
am_max_hdr = uct_ib_iface_hdr_size(iface->super.super.config.seg_size,
sizeof(uct_ud_neth_t) +
sizeof(uct_ud_zcopy_desc_t));
status = uct_ud_iface_query(&iface->super, iface_attr,
iface->config.max_send_sge, am_max_hdr);
if (status != UCS_OK) {
return status;
}
iface_attr->overhead = 105e-9;
return UCS_OK;
}
static ucs_status_t
uct_ud_verbs_iface_unpack_peer_address(uct_ud_iface_t *iface,
const uct_ib_address_t *ib_addr,
const uct_ud_iface_addr_t *if_addr,
int path_index, void *address_p)
{
uct_ib_iface_t *ib_iface = &iface->super;
uct_ud_verbs_ep_peer_address_t *peer_address =
(uct_ud_verbs_ep_peer_address_t*)address_p;
struct ibv_ah_attr ah_attr;
enum ibv_mtu path_mtu;
ucs_status_t status;
memset(peer_address, 0, sizeof(*peer_address));
uct_ib_iface_fill_ah_attr_from_addr(ib_iface, ib_addr, path_index,
&ah_attr, &path_mtu);
status = uct_ib_iface_create_ah(ib_iface, &ah_attr, "UD verbs connect",
&peer_address->ah);
if (status != UCS_OK) {
return status;
}
peer_address->dest_qpn = uct_ib_unpack_uint24(if_addr->qp_num);
return UCS_OK;
}
static void *uct_ud_verbs_ep_get_peer_address(uct_ud_ep_t *ud_ep)
{
uct_ud_verbs_ep_t *ep = ucs_derived_of(ud_ep, uct_ud_verbs_ep_t);
return &ep->peer_address;
}
static size_t uct_ud_verbs_get_peer_address_length()
{
return sizeof(uct_ud_verbs_ep_peer_address_t);
}
static const char*
uct_ud_verbs_iface_peer_address_str(const uct_ud_iface_t *iface,
const void *address,
char *str, size_t max_size)
{
const uct_ud_verbs_ep_peer_address_t *peer_address =
(const uct_ud_verbs_ep_peer_address_t*)address;
ucs_snprintf_zero(str, max_size, "ah=%p dest_qpn=%u",
peer_address->ah, peer_address->dest_qpn);
return str;
}
static ucs_status_t
uct_ud_verbs_ep_create(const uct_ep_params_t *params, uct_ep_h *ep_p)
{
if (ucs_test_all_flags(params->field_mask, UCT_EP_PARAM_FIELD_DEV_ADDR |
UCT_EP_PARAM_FIELD_IFACE_ADDR)) {
return uct_ud_ep_create_connected_common(params, ep_p);
}
return uct_ud_verbs_ep_t_new(params, ep_p);
}
static void uct_ud_verbs_iface_destroy_qp(uct_ud_iface_t *ud_iface)
{
uct_ib_destroy_qp(ud_iface->qp);
}
static void UCS_CLASS_DELETE_FUNC_NAME(uct_ud_verbs_iface_t)(uct_iface_t*);
static uct_ud_iface_ops_t uct_ud_verbs_iface_ops = {
.super = {
.super = {
.iface_estimate_perf = uct_ib_iface_estimate_perf,
.iface_vfs_refresh = (uct_iface_vfs_refresh_func_t)ucs_empty_function,
.ep_query = (uct_ep_query_func_t)ucs_empty_function_return_unsupported
},
.create_cq = uct_ib_verbs_create_cq,
.arm_cq = uct_ib_iface_arm_cq,
.event_cq = (uct_ib_iface_event_cq_func_t)ucs_empty_function,
.handle_failure = (uct_ib_iface_handle_failure_func_t)ucs_empty_function_do_assert,
},
.async_progress = uct_ud_verbs_iface_async_progress,
.send_ctl = uct_ud_verbs_ep_send_ctl,
.ep_free = UCS_CLASS_DELETE_FUNC_NAME(uct_ud_verbs_ep_t),
.create_qp = uct_ib_iface_create_qp,
.destroy_qp = uct_ud_verbs_iface_destroy_qp,
.unpack_peer_address = uct_ud_verbs_iface_unpack_peer_address,
.ep_get_peer_address = uct_ud_verbs_ep_get_peer_address,
.get_peer_address_length = uct_ud_verbs_get_peer_address_length,
.peer_address_str = uct_ud_verbs_iface_peer_address_str,
};
static uct_iface_ops_t uct_ud_verbs_iface_tl_ops = {
.ep_put_short = uct_ud_verbs_ep_put_short,
.ep_am_short = uct_ud_verbs_ep_am_short,
.ep_am_short_iov = uct_ud_verbs_ep_am_short_iov,
.ep_am_bcopy = uct_ud_verbs_ep_am_bcopy,
.ep_am_zcopy = uct_ud_verbs_ep_am_zcopy,
.ep_pending_add = uct_ud_ep_pending_add,
.ep_pending_purge = uct_ud_ep_pending_purge,
.ep_flush = uct_ud_ep_flush,
.ep_fence = uct_base_ep_fence,
.ep_check = uct_ud_ep_check,
.ep_create = uct_ud_verbs_ep_create,
.ep_destroy = uct_ud_ep_disconnect,
.ep_get_address = uct_ud_ep_get_address,
.ep_connect_to_ep = uct_ud_ep_connect_to_ep,
.iface_flush = uct_ud_iface_flush,
.iface_fence = uct_base_iface_fence,
.iface_progress_enable = uct_ud_iface_progress_enable,
.iface_progress_disable = uct_ud_iface_progress_disable,
.iface_progress = uct_ud_verbs_iface_progress,
.iface_event_fd_get = (uct_iface_event_fd_get_func_t)
ucs_empty_function_return_unsupported,
.iface_event_arm = uct_ud_iface_event_arm,
.iface_close = UCS_CLASS_DELETE_FUNC_NAME(uct_ud_verbs_iface_t),
.iface_query = uct_ud_verbs_iface_query,
.iface_get_device_address = uct_ib_iface_get_device_address,
.iface_get_address = uct_ud_iface_get_address,
.iface_is_reachable = uct_ib_iface_is_reachable
};
static UCS_F_NOINLINE void
uct_ud_verbs_iface_post_recv_always(uct_ud_verbs_iface_t *iface, int max)
{
struct ibv_recv_wr *bad_wr;
uct_ib_recv_wr_t *wrs;
unsigned count;
int ret;
wrs = ucs_alloca(sizeof *wrs * max);
count = uct_ib_iface_prepare_rx_wrs(&iface->super.super, &iface->super.rx.mp,
wrs, max);
if (count == 0) {
return;
}
ret = ibv_post_recv(iface->super.qp, &wrs[0].ibwr, &bad_wr);
if (ret != 0) {
ucs_fatal("ibv_post_recv() returned %d: %m", ret);
}
iface->super.rx.available -= count;
}
static UCS_F_ALWAYS_INLINE void
uct_ud_verbs_iface_post_recv(uct_ud_verbs_iface_t *iface)
{
unsigned batch = iface->super.super.config.rx_max_batch;
if (iface->super.rx.available < batch)
return;
uct_ud_verbs_iface_post_recv_always(iface, batch);
}
ucs_status_t uct_ud_verbs_qp_max_send_sge(uct_ud_verbs_iface_t *iface,
size_t *max_send_sge)
{
uint32_t max_sge;
ucs_status_t status;
status = uct_ib_qp_max_send_sge(iface->super.qp, &max_sge);
if (status != UCS_OK) {
return status;
}
ucs_assert_always(max_sge > 1);
*max_send_sge = ucs_min(max_sge - 1, UCT_IB_MAX_IOV);
return UCS_OK;
}
static UCS_CLASS_INIT_FUNC(uct_ud_verbs_iface_t, uct_md_h md, uct_worker_h worker,
const uct_iface_params_t *params,
const uct_iface_config_t *tl_config)
{
uct_ud_iface_config_t *config = ucs_derived_of(tl_config,
uct_ud_iface_config_t);
uct_ib_iface_init_attr_t init_attr = {};
ucs_status_t status;
ucs_trace_func("");
init_attr.cq_len[UCT_IB_DIR_TX] = config->super.tx.queue_len;
init_attr.cq_len[UCT_IB_DIR_RX] = config->super.rx.queue_len;
UCS_CLASS_CALL_SUPER_INIT(uct_ud_iface_t, &uct_ud_verbs_iface_ops, &uct_ud_verbs_iface_tl_ops, md,
worker, params, config, &init_attr);
self->super.super.config.sl = uct_ib_iface_config_select_sl(&config->super);
memset(&self->tx.wr_inl, 0, sizeof(self->tx.wr_inl));
self->tx.wr_inl.opcode = IBV_WR_SEND;
self->tx.wr_inl.wr_id = 0xBEEBBEEB;
self->tx.wr_inl.wr.ud.remote_qkey = UCT_IB_KEY;
self->tx.wr_inl.imm_data = 0;
self->tx.wr_inl.next = 0;
self->tx.wr_inl.sg_list = self->tx.sge;
memset(&self->tx.wr_skb, 0, sizeof(self->tx.wr_skb));
self->tx.wr_skb.opcode = IBV_WR_SEND;
self->tx.wr_skb.wr_id = 0xFAAFFAAF;
self->tx.wr_skb.wr.ud.remote_qkey = UCT_IB_KEY;
self->tx.wr_skb.imm_data = 0;
self->tx.wr_skb.next = 0;
self->tx.wr_skb.sg_list = self->tx.sge;
self->tx.wr_skb.num_sge = 1;
self->tx.send_sn = 0;
self->tx.comp_sn = 0;
if (self->super.super.config.rx_max_batch < UCT_UD_RX_BATCH_MIN) {
ucs_warn("rx max batch is too low (%d < %d), performance may be impacted",
self->super.super.config.rx_max_batch,
UCT_UD_RX_BATCH_MIN);
}
status = uct_ud_verbs_qp_max_send_sge(self, &self->config.max_send_sge);
if (status != UCS_OK) {
return status;
}
while (self->super.rx.available >= self->super.super.config.rx_max_batch) {
uct_ud_verbs_iface_post_recv(self);
}
return uct_ud_iface_complete_init(&self->super);
}
static UCS_CLASS_CLEANUP_FUNC(uct_ud_verbs_iface_t)
{
ucs_trace_func("");
}
UCS_CLASS_DEFINE(uct_ud_verbs_iface_t, uct_ud_iface_t);
static UCS_CLASS_DEFINE_NEW_FUNC(uct_ud_verbs_iface_t, uct_iface_t, uct_md_h,
uct_worker_h, const uct_iface_params_t*,
const uct_iface_config_t*);
static UCS_CLASS_DEFINE_DELETE_FUNC(uct_ud_verbs_iface_t, uct_iface_t);
static ucs_status_t
uct_ud_verbs_query_tl_devices(uct_md_h md,
uct_tl_device_resource_t **tl_devices_p,
unsigned *num_tl_devices_p)
{
uct_ib_md_t *ib_md = ucs_derived_of(md, uct_ib_md_t);
return uct_ib_device_query_ports(&ib_md->dev, 0, tl_devices_p,
num_tl_devices_p);
}
UCT_TL_DEFINE(&uct_ib_component, ud_verbs, uct_ud_verbs_query_tl_devices,
uct_ud_verbs_iface_t, "UD_VERBS_",
uct_ud_verbs_iface_config_table, uct_ud_iface_config_t);