hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

IB/hfi1: Add a function to build TID RDMA WRITE DATA packet 

This patch adds a function to build TID RDMA WRITE DATA packet.

Signed-off-by: Mitko Haralanov <mitko.haralanov@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: Kaike Wan <kaike.wan@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Kaike Wan 2019-01-23 21:49:41 -08:00 committed by Doug Ledford
parent 72a0ea99ec
commit 539e1908e4
2 changed files with 66 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

62
drivers/infiniband/hw/hfi1/tid_rdma.c
View File

@ -3943,3 +3943,65 @@ ack_done:
if (is_fecn)
hfi1_send_rc_ack(packet, is_fecn);
}
bool hfi1_build_tid_rdma_packet(struct rvt_swqe *wqe,
struct ib_other_headers *ohdr,
u32 *bth1, u32 *bth2, u32 *len)
{
struct tid_rdma_request *req = wqe_to_tid_req(wqe);
struct tid_rdma_flow *flow = &req->flows[req->clear_tail];
struct tid_rdma_params *remote;
struct rvt_qp *qp = req->qp;
struct hfi1_qp_priv *qpriv = qp->priv;
u32 tidentry = flow->tid_entry[flow->tid_idx];
u32 tidlen = EXP_TID_GET(tidentry, LEN) << PAGE_SHIFT;
struct tid_rdma_write_data *wd = &ohdr->u.tid_rdma.w_data;
u32 next_offset, om = KDETH_OM_LARGE;
bool last_pkt;
if (!tidlen) {
hfi1_trdma_send_complete(qp, wqe, IB_WC_REM_INV_RD_REQ_ERR);
rvt_error_qp(qp, IB_WC_REM_INV_RD_REQ_ERR);
}
*len = min_t(u32, qp->pmtu, tidlen - flow->tid_offset);
flow->sent += *len;
next_offset = flow->tid_offset + *len;
last_pkt = (flow->tid_idx == (flow->tidcnt - 1) &&
next_offset >= tidlen) || (flow->sent >= flow->length);
rcu_read_lock();
remote = rcu_dereference(qpriv->tid_rdma.remote);
KDETH_RESET(wd->kdeth0, KVER, 0x1);
KDETH_SET(wd->kdeth0, SH, !last_pkt);
KDETH_SET(wd->kdeth0, INTR, !!(!last_pkt && remote->urg));
KDETH_SET(wd->kdeth0, TIDCTRL, EXP_TID_GET(tidentry, CTRL));
KDETH_SET(wd->kdeth0, TID, EXP_TID_GET(tidentry, IDX));
KDETH_SET(wd->kdeth0, OM, om == KDETH_OM_LARGE);
KDETH_SET(wd->kdeth0, OFFSET, flow->tid_offset / om);
KDETH_RESET(wd->kdeth1, JKEY, remote->jkey);
wd->verbs_qp = cpu_to_be32(qp->remote_qpn);
rcu_read_unlock();
*bth1 = flow->tid_qpn;
*bth2 = mask_psn(((flow->flow_state.spsn + flow->pkt++) &
HFI1_KDETH_BTH_SEQ_MASK) |
(flow->flow_state.generation <<
HFI1_KDETH_BTH_SEQ_SHIFT));
if (last_pkt) {
/* PSNs are zero-based, so +1 to count number of packets */
if (flow->flow_state.lpsn + 1 +
rvt_div_round_up_mtu(qp, req->seg_len) >
MAX_TID_FLOW_PSN)
req->state = TID_REQUEST_SYNC;
*bth2 |= IB_BTH_REQ_ACK;
}
if (next_offset >= tidlen) {
flow->tid_offset = 0;
flow->tid_idx++;
} else {
flow->tid_offset = next_offset;
}
return last_pkt;
}

4
drivers/infiniband/hw/hfi1/tid_rdma.h
View File

@ -275,4 +275,8 @@ void hfi1_del_tid_reap_timer(struct rvt_qp *qp);
void hfi1_rc_rcv_tid_rdma_write_resp(struct hfi1_packet *packet);
bool hfi1_build_tid_rdma_packet(struct rvt_swqe *wqe,
struct ib_other_headers *ohdr,
u32 *bth1, u32 *bth2, u32 *len);
#endif /* HFI1_TID_RDMA_H */