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IB/hfi1: Add 16B UD support 

Add 16B bypass packet support for UD traffic types.

Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com>
Signed-off-by: Don Hiatt <don.hiatt@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Don Hiatt 2017-08-04 13:54:23 -07:00 committed by Doug Ledford
parent d98bb7f7e6
commit 88733e3b84
7 changed files with 457 additions and 131 deletions
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35
drivers/infiniband/hw/hfi1/driver.c
View File

@ -437,23 +437,33 @@ void hfi1_process_ecn_slowpath(struct rvt_qp *qp, struct hfi1_packet *pkt,
bool do_cnp)
{
struct hfi1_ibport *ibp = to_iport(qp->ibqp.device, qp->port_num);
struct ib_header *hdr = pkt->hdr;
struct ib_other_headers *ohdr = pkt->ohdr;
struct ib_grh *grh = pkt->grh;
u32 rqpn = 0, bth1;
u16 rlid, dlid = ib_get_dlid(hdr);
u8 sc, svc_type;
u16 pkey, rlid, dlid = ib_get_dlid(pkt->hdr);
u8 hdr_type, sc, svc_type;
bool is_mcast = false;
if (pkt->etype == RHF_RCV_TYPE_BYPASS) {
is_mcast = hfi1_is_16B_mcast(dlid);
pkey = hfi1_16B_get_pkey(pkt->hdr);
sc = hfi1_16B_get_sc(pkt->hdr);
hdr_type = HFI1_PKT_TYPE_16B;
} else {
is_mcast = (dlid > be16_to_cpu(IB_MULTICAST_LID_BASE)) &&
(dlid != be16_to_cpu(IB_LID_PERMISSIVE));
pkey = ib_bth_get_pkey(ohdr);
sc = hfi1_9B_get_sc5(pkt->hdr, pkt->rhf);
hdr_type = HFI1_PKT_TYPE_9B;
}
switch (qp->ibqp.qp_type) {
case IB_QPT_SMI:
case IB_QPT_GSI:
case IB_QPT_UD:
rlid = ib_get_slid(hdr);
rqpn = ib_get_sqpn(ohdr);
rlid = ib_get_slid(pkt->hdr);
rqpn = ib_get_sqpn(pkt->ohdr);
svc_type = IB_CC_SVCTYPE_UD;
is_mcast = (dlid > be16_to_cpu(IB_MULTICAST_LID_BASE)) &&
(dlid != be16_to_cpu(IB_LID_PERMISSIVE));
break;
case IB_QPT_UC:
rlid = rdma_ah_get_dlid(&qp->remote_ah_attr);
@ -469,14 +479,11 @@ void hfi1_process_ecn_slowpath(struct rvt_qp *qp, struct hfi1_packet *pkt,
return;
}
sc = hfi1_9B_get_sc5(hdr, pkt->rhf);
bth1 = be32_to_cpu(ohdr->bth[1]);
if (do_cnp && (bth1 & IB_FECN_SMASK)) {
u16 pkey = ib_bth_get_pkey(ohdr);
return_cnp(ibp, qp, rqpn, pkey, dlid, rlid, sc, grh);
}
/* Call appropriate CNP handler */
if (do_cnp && (bth1 & IB_FECN_SMASK))
hfi1_handle_cnp_tbl[hdr_type](ibp, qp, rqpn, pkey,
dlid, rlid, sc, grh);
if (!is_mcast && (bth1 & IB_BECN_SMASK)) {
struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);

115
drivers/infiniband/hw/hfi1/hfi.h
View File

@ -831,6 +831,10 @@ struct hfi1_pportdata {
typedef int (*rhf_rcv_function_ptr)(struct hfi1_packet *packet);
typedef void (*opcode_handler)(struct hfi1_packet *packet);
typedef void (*hfi1_make_req)(struct rvt_qp *qp,
struct hfi1_pkt_state *ps,
struct rvt_swqe *wqe);
/* return values for the RHF receive functions */
#define RHF_RCV_CONTINUE 0 /* keep going */
@ -1373,6 +1377,13 @@ void hfi1_set_vnic_msix_info(struct hfi1_ctxtdata *rcd);
void hfi1_reset_vnic_msix_info(struct hfi1_ctxtdata *rcd);
extern const struct pci_device_id hfi1_pci_tbl[];
void hfi1_make_ud_req_9B(struct rvt_qp *qp,
struct hfi1_pkt_state *ps,
struct rvt_swqe *wqe);
void hfi1_make_ud_req_16B(struct rvt_qp *qp,
struct hfi1_pkt_state *ps,
struct rvt_swqe *wqe);
/* receive packet handler dispositions */
#define RCV_PKT_OK 0x0 /* keep going */
@ -1507,6 +1518,18 @@ void process_becn(struct hfi1_pportdata *ppd, u8 sl, u16 rlid, u32 lqpn,
void return_cnp(struct hfi1_ibport *ibp, struct rvt_qp *qp, u32 remote_qpn,
u32 pkey, u32 slid, u32 dlid, u8 sc5,
const struct ib_grh *old_grh);
void return_cnp_16B(struct hfi1_ibport *ibp, struct rvt_qp *qp,
u32 remote_qpn, u32 pkey, u32 slid, u32 dlid,
u8 sc5, const struct ib_grh *old_grh);
typedef void (*hfi1_handle_cnp)(struct hfi1_ibport *ibp, struct rvt_qp *qp,
u32 remote_qpn, u32 pkey, u32 slid, u32 dlid,
u8 sc5, const struct ib_grh *old_grh);
/* We support only two types - 9B and 16B for now */
static const hfi1_handle_cnp hfi1_handle_cnp_tbl[2] = {
[HFI1_PKT_TYPE_9B] = &return_cnp,
[HFI1_PKT_TYPE_16B] = &return_cnp_16B
};
#define PKEY_CHECK_INVALID -1
int egress_pkey_check(struct hfi1_pportdata *ppd, __be16 *lrh, __be32 *bth,
u8 sc5, int8_t s_pkey_index);
@ -1747,12 +1770,22 @@ static inline bool process_ecn(struct rvt_qp *qp, struct hfi1_packet *pkt,
bool do_cnp)
{
struct ib_other_headers *ohdr = pkt->ohdr;
u32 bth1;
u32 bth1;
bool becn = false;
bool fecn = false;
if (pkt->etype == RHF_RCV_TYPE_BYPASS) {
fecn = hfi1_16B_get_fecn(pkt->hdr);
becn = hfi1_16B_get_becn(pkt->hdr);
} else {
bth1 = be32_to_cpu(ohdr->bth[1]);
if (unlikely(bth1 & (IB_BECN_SMASK | IB_FECN_SMASK))) {
fecn = bth1 & IB_FECN_SMASK;
becn = bth1 & IB_BECN_SMASK;
}
if (unlikely(fecn || becn)) {
hfi1_process_ecn_slowpath(qp, pkt, do_cnp);
return !!(bth1 & IB_FECN_SMASK);
return fecn;
}
return false;
}
@ -2315,4 +2348,80 @@ static inline bool hfi1_get_hdr_type(u32 lid, struct rdma_ah_attr *attr)
return hfi1_get_packet_type(lid);
}
static inline void hfi1_make_ext_grh(struct hfi1_packet *packet,
struct ib_grh *grh, u32 slid,
u32 dlid)
{
struct hfi1_ibport *ibp = &packet->rcd->ppd->ibport_data;
struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
if (!ibp)
return;
grh->hop_limit = 1;
grh->sgid.global.subnet_prefix = ibp->rvp.gid_prefix;
if (slid == opa_get_lid(be32_to_cpu(OPA_LID_PERMISSIVE), 16B))
grh->sgid.global.interface_id =
OPA_MAKE_ID(be32_to_cpu(OPA_LID_PERMISSIVE));
else
grh->sgid.global.interface_id = OPA_MAKE_ID(slid);
/*
* Upper layers (like mad) may compare the dgid in the
* wc that is obtained here with the sgid_index in
* the wr. Since sgid_index in wr is always 0 for
* extended lids, set the dgid here to the default
* IB gid.
*/
grh->dgid.global.subnet_prefix = ibp->rvp.gid_prefix;
grh->dgid.global.interface_id =
cpu_to_be64(ppd->guids[HFI1_PORT_GUID_INDEX]);
}
static inline int hfi1_get_16b_padding(u32 hdr_size, u32 payload)
{
return -(hdr_size + payload + (SIZE_OF_CRC << 2) +
SIZE_OF_LT) & 0x7;
}
static inline void hfi1_make_ib_hdr(struct ib_header *hdr,
u16 lrh0, u16 len,
u16 dlid, u16 slid)
{
hdr->lrh[0] = cpu_to_be16(lrh0);
hdr->lrh[1] = cpu_to_be16(dlid);
hdr->lrh[2] = cpu_to_be16(len);
hdr->lrh[3] = cpu_to_be16(slid);
}
static inline void hfi1_make_16b_hdr(struct hfi1_16b_header *hdr,
u32 slid, u32 dlid,
u16 len, u16 pkey,
u8 becn, u8 fecn, u8 l4,
u8 sc)
{
u32 lrh0 = 0;
u32 lrh1 = 0x40000000;
u32 lrh2 = 0;
u32 lrh3 = 0;
lrh0 = (lrh0 & ~OPA_16B_BECN_MASK) | (becn << OPA_16B_BECN_SHIFT);
lrh0 = (lrh0 & ~OPA_16B_LEN_MASK) | (len << OPA_16B_LEN_SHIFT);
lrh0 = (lrh0 & ~OPA_16B_LID_MASK) | (slid & OPA_16B_LID_MASK);
lrh1 = (lrh1 & ~OPA_16B_FECN_MASK) | (fecn << OPA_16B_FECN_SHIFT);
lrh1 = (lrh1 & ~OPA_16B_SC_MASK) | (sc << OPA_16B_SC_SHIFT);
lrh1 = (lrh1 & ~OPA_16B_LID_MASK) | (dlid & OPA_16B_LID_MASK);
lrh2 = (lrh2 & ~OPA_16B_SLID_MASK) |
((slid >> OPA_16B_SLID_SHIFT) << OPA_16B_SLID_HIGH_SHIFT);
lrh2 = (lrh2 & ~OPA_16B_DLID_MASK) |
((dlid >> OPA_16B_DLID_SHIFT) << OPA_16B_DLID_HIGH_SHIFT);
lrh2 = (lrh2 & ~OPA_16B_PKEY_MASK) | (pkey << OPA_16B_PKEY_SHIFT);
lrh2 = (lrh2 & ~OPA_16B_L4_MASK) | l4;
hdr->lrh[0] = lrh0;
hdr->lrh[1] = lrh1;
hdr->lrh[2] = lrh2;
hdr->lrh[3] = lrh3;
}
#endif /* _HFI1_KERNEL_H */

8
drivers/infiniband/hw/hfi1/mad.c
View File

@ -373,12 +373,10 @@ static struct trap_node *create_trap_node(u8 type, __be16 trap_num, u32 lid)
* Send a bad P_Key trap (ch. 14.3.8).
*/
void hfi1_bad_pkey(struct hfi1_ibport *ibp, u32 key, u32 sl,
u32 qp1, u32 qp2, u16 lid1, u16 lid2)
u32 qp1, u32 qp2, u32 lid1, u32 lid2)
{
struct trap_node *trap;
u32 lid = ppd_from_ibp(ibp)->lid;
u32 _lid1 = lid1;
u32 _lid2 = lid2;
ibp->rvp.n_pkt_drops++;
ibp->rvp.pkey_violations++;
@ -389,8 +387,8 @@ void hfi1_bad_pkey(struct hfi1_ibport *ibp, u32 key, u32 sl,
return;
/* Send violation trap */
trap->data.ntc_257_258.lid1 = cpu_to_be32(_lid1);
trap->data.ntc_257_258.lid2 = cpu_to_be32(_lid2);
trap->data.ntc_257_258.lid1 = cpu_to_be32(lid1);
trap->data.ntc_257_258.lid2 = cpu_to_be32(lid2);
trap->data.ntc_257_258.key = cpu_to_be32(key);
trap->data.ntc_257_258.sl = sl << 3;
trap->data.ntc_257_258.qp1 = cpu_to_be32(qp1);

4
drivers/infiniband/hw/hfi1/ruc.c
View File

@ -649,7 +649,7 @@ done:
* @ibp: a pointer to the IB port
* @hdr: a pointer to the GRH header being constructed
* @grh: the global route address to send to
* @hwords: the number of 32 bit words of header being sent
* @hwords: size of header after grh being sent in dwords
* @nwords: the number of 32 bit words of data being sent
*
* Return the size of the header in 32 bit words.
@ -661,7 +661,7 @@ u32 hfi1_make_grh(struct hfi1_ibport *ibp, struct ib_grh *hdr,
cpu_to_be32((IB_GRH_VERSION << IB_GRH_VERSION_SHIFT) |
(grh->traffic_class << IB_GRH_TCLASS_SHIFT) |
(grh->flow_label << IB_GRH_FLOW_SHIFT));
hdr->paylen = cpu_to_be16((hwords - 2 + nwords + SIZE_OF_CRC) << 2);
hdr->paylen = cpu_to_be16((hwords + nwords) << 2);
/* next_hdr is defined by C8-7 in ch. 8.4.1 */
hdr->next_hdr = IB_GRH_NEXT_HDR;
hdr->hop_limit = grh->hop_limit;

417
drivers/infiniband/hw/hfi1/ud.c
View File

@ -53,6 +53,12 @@
#include "verbs_txreq.h"
#include "qp.h"
/* We support only two types - 9B and 16B for now */
static const hfi1_make_req hfi1_make_ud_req_tbl[2] = {
[HFI1_PKT_TYPE_9B] = &hfi1_make_ud_req_9B,
[HFI1_PKT_TYPE_16B] = &hfi1_make_ud_req_16B
};
/**
* ud_loopback - handle send on loopback QPs
* @sqp: the sending QP
@ -67,6 +73,7 @@ static void ud_loopback(struct rvt_qp *sqp, struct rvt_swqe *swqe)
{
struct hfi1_ibport *ibp = to_iport(sqp->ibqp.device, sqp->port_num);
struct hfi1_pportdata *ppd;
struct hfi1_qp_priv *priv = sqp->priv;
struct rvt_qp *qp;
struct rdma_ah_attr *ah_attr;
unsigned long flags;
@ -102,7 +109,7 @@ static void ud_loopback(struct rvt_qp *sqp, struct rvt_swqe *swqe)
if (qp->ibqp.qp_num > 1) {
u16 pkey;
u16 slid;
u32 slid;
u8 sc5 = ibp->sl_to_sc[rdma_ah_get_sl(ah_attr)];
pkey = hfi1_get_pkey(ibp, sqp->s_pkey_index);
@ -176,9 +183,33 @@ static void ud_loopback(struct rvt_qp *sqp, struct rvt_swqe *swqe)
if (rdma_ah_get_ah_flags(ah_attr) & IB_AH_GRH) {
struct ib_grh grh;
const struct ib_global_route *grd = rdma_ah_read_grh(ah_attr);
struct ib_global_route grd = *(rdma_ah_read_grh(ah_attr));
hfi1_make_grh(ibp, &grh, grd, 0, 0);
/*
* For loopback packets with extended LIDs, the
* sgid_index in the GRH is 0 and the dgid is
* OPA GID of the sender. While creating a response
* to the loopback packet, IB core creates the new
* sgid_index from the DGID and that will be the
* OPA_GID_INDEX. The new dgid is from the sgid
* index and that will be in the IB GID format.
*
* We now have a case where the sent packet had a
* different sgid_index and dgid compared to the
* one that was received in response.
*
* Fix this inconsistency.
*/
if (priv->hdr_type == HFI1_PKT_TYPE_16B) {
if (grd.sgid_index == 0)
grd.sgid_index = OPA_GID_INDEX;
if (ib_is_opa_gid(&grd.dgid))
grd.dgid.global.interface_id =
cpu_to_be64(ppd->guids[HFI1_PORT_GUID_INDEX]);
}
hfi1_make_grh(ibp, &grh, &grd, 0, 0);
hfi1_copy_sge(&qp->r_sge, &grh,
sizeof(grh), true, false);
wc.wc_flags |= IB_WC_GRH;
@ -252,6 +283,183 @@ drop:
rcu_read_unlock();
}
static void hfi1_make_bth_deth(struct rvt_qp *qp, struct rvt_swqe *wqe,
struct ib_other_headers *ohdr,
u16 *pkey, u32 extra_bytes, bool bypass)
{
u32 bth0;
struct hfi1_ibport *ibp;
ibp = to_iport(qp->ibqp.device, qp->port_num);
if (wqe->wr.opcode == IB_WR_SEND_WITH_IMM) {
ohdr->u.ud.imm_data = wqe->wr.ex.imm_data;
bth0 = IB_OPCODE_UD_SEND_ONLY_WITH_IMMEDIATE << 24;
} else {
bth0 = IB_OPCODE_UD_SEND_ONLY << 24;
}
if (wqe->wr.send_flags & IB_SEND_SOLICITED)
bth0 |= IB_BTH_SOLICITED;
bth0 |= extra_bytes << 20;
if (qp->ibqp.qp_type == IB_QPT_GSI || qp->ibqp.qp_type == IB_QPT_SMI)
*pkey = hfi1_get_pkey(ibp, wqe->ud_wr.pkey_index);
else
*pkey = hfi1_get_pkey(ibp, qp->s_pkey_index);
if (!bypass)
bth0 |= *pkey;
ohdr->bth[0] = cpu_to_be32(bth0);
ohdr->bth[1] = cpu_to_be32(wqe->ud_wr.remote_qpn);
ohdr->bth[2] = cpu_to_be32(mask_psn(wqe->psn));
/*
* Qkeys with the high order bit set mean use the
* qkey from the QP context instead of the WR (see 10.2.5).
*/
ohdr->u.ud.deth[0] = cpu_to_be32((int)wqe->ud_wr.remote_qkey < 0 ?
qp->qkey : wqe->ud_wr.remote_qkey);
ohdr->u.ud.deth[1] = cpu_to_be32(qp->ibqp.qp_num);
}
void hfi1_make_ud_req_9B(struct rvt_qp *qp, struct hfi1_pkt_state *ps,
struct rvt_swqe *wqe)
{
u32 nwords, extra_bytes;
u16 len, slid, dlid, pkey;
u16 lrh0 = 0;
u8 sc5;
struct hfi1_qp_priv *priv = qp->priv;
struct ib_other_headers *ohdr;
struct rdma_ah_attr *ah_attr;
struct hfi1_pportdata *ppd;
struct hfi1_ibport *ibp;
struct ib_grh *grh;
ibp = to_iport(qp->ibqp.device, qp->port_num);
ppd = ppd_from_ibp(ibp);
ah_attr = &ibah_to_rvtah(wqe->ud_wr.ah)->attr;
extra_bytes = -wqe->length & 3;
nwords = ((wqe->length + extra_bytes) >> 2) + SIZE_OF_CRC;
/* header size in dwords LRH+BTH+DETH = (8+12+8)/4. */
qp->s_hdrwords = 7;
if (wqe->wr.opcode == IB_WR_SEND_WITH_IMM)
qp->s_hdrwords++;
if (rdma_ah_get_ah_flags(ah_attr) & IB_AH_GRH) {
grh = &ps->s_txreq->phdr.hdr.ibh.u.l.grh;
qp->s_hdrwords += hfi1_make_grh(ibp, grh,
rdma_ah_read_grh(ah_attr),
qp->s_hdrwords - 2, nwords);
lrh0 = HFI1_LRH_GRH;
ohdr = &ps->s_txreq->phdr.hdr.ibh.u.l.oth;
} else {
lrh0 = HFI1_LRH_BTH;
ohdr = &ps->s_txreq->phdr.hdr.ibh.u.oth;
}
sc5 = ibp->sl_to_sc[rdma_ah_get_sl(ah_attr)];
lrh0 |= (rdma_ah_get_sl(ah_attr) & 0xf) << 4;
if (qp->ibqp.qp_type == IB_QPT_SMI) {
lrh0 |= 0xF000; /* Set VL (see ch. 13.5.3.1) */
priv->s_sc = 0xf;
} else {
lrh0 |= (sc5 & 0xf) << 12;
priv->s_sc = sc5;
}
dlid = opa_get_lid(rdma_ah_get_dlid(ah_attr), 9B);
if (dlid == be16_to_cpu(IB_LID_PERMISSIVE)) {
slid = be16_to_cpu(IB_LID_PERMISSIVE);
} else {
u16 lid = (u16)ppd->lid;
if (lid) {
lid |= rdma_ah_get_path_bits(ah_attr) &
((1 << ppd->lmc) - 1);
slid = lid;
} else {
slid = be16_to_cpu(IB_LID_PERMISSIVE);
}
}
hfi1_make_bth_deth(qp, wqe, ohdr, &pkey, extra_bytes, false);
len = qp->s_hdrwords + nwords;
/* Setup the packet */
ps->s_txreq->phdr.hdr.hdr_type = HFI1_PKT_TYPE_9B;
hfi1_make_ib_hdr(&ps->s_txreq->phdr.hdr.ibh,
lrh0, len, dlid, slid);
}
void hfi1_make_ud_req_16B(struct rvt_qp *qp, struct hfi1_pkt_state *ps,
struct rvt_swqe *wqe)
{
struct hfi1_qp_priv *priv = qp->priv;
struct ib_other_headers *ohdr;
struct rdma_ah_attr *ah_attr;
struct hfi1_pportdata *ppd;
struct hfi1_ibport *ibp;
u32 dlid, slid, nwords, extra_bytes;
u16 len, pkey;
u8 l4, sc5;
ibp = to_iport(qp->ibqp.device, qp->port_num);
ppd = ppd_from_ibp(ibp);
ah_attr = &ibah_to_rvtah(wqe->ud_wr.ah)->attr;
/* header size in dwords 16B LRH+BTH+DETH = (16+12+8)/4. */
qp->s_hdrwords = 9;
if (wqe->wr.opcode == IB_WR_SEND_WITH_IMM)
qp->s_hdrwords++;
/* SW provides space for CRC and LT for bypass packets. */
extra_bytes = hfi1_get_16b_padding((qp->s_hdrwords << 2),
wqe->length);
nwords = ((wqe->length + extra_bytes + SIZE_OF_LT) >> 2) + SIZE_OF_CRC;
if ((rdma_ah_get_ah_flags(ah_attr) & IB_AH_GRH) &&
hfi1_check_mcast(rdma_ah_get_dlid(ah_attr))) {
struct ib_grh *grh;
struct ib_global_route *grd = rdma_ah_retrieve_grh(ah_attr);
/*
* Ensure OPA GIDs are transformed to IB gids
* before creating the GRH.
*/
if (grd->sgid_index == OPA_GID_INDEX) {
dd_dev_warn(ppd->dd, "Bad sgid_index. sgid_index: %d\n",
grd->sgid_index);
grd->sgid_index = 0;
}
grh = &ps->s_txreq->phdr.hdr.opah.u.l.grh;
qp->s_hdrwords += hfi1_make_grh(ibp, grh, grd,
qp->s_hdrwords - 4, nwords);
ohdr = &ps->s_txreq->phdr.hdr.opah.u.l.oth;
l4 = OPA_16B_L4_IB_GLOBAL;
} else {
ohdr = &ps->s_txreq->phdr.hdr.opah.u.oth;
l4 = OPA_16B_L4_IB_LOCAL;
}
sc5 = ibp->sl_to_sc[rdma_ah_get_sl(ah_attr)];
if (qp->ibqp.qp_type == IB_QPT_SMI)
priv->s_sc = 0xf;
else
priv->s_sc = sc5;
dlid = opa_get_lid(rdma_ah_get_dlid(ah_attr), 16B);
if (!ppd->lid)
slid = be32_to_cpu(OPA_LID_PERMISSIVE);
else
slid = ppd->lid | (rdma_ah_get_path_bits(ah_attr) &
((1 << ppd->lmc) - 1));
hfi1_make_bth_deth(qp, wqe, ohdr, &pkey, extra_bytes, true);
/* Convert dwords to flits */
len = (qp->s_hdrwords + nwords) >> 1;
/* Setup the packet */
ps->s_txreq->phdr.hdr.hdr_type = HFI1_PKT_TYPE_16B;
hfi1_make_16b_hdr(&ps->s_txreq->phdr.hdr.opah,
slid, dlid, len, pkey, 0, 0, l4, priv->s_sc);
}
/**
* hfi1_make_ud_req - construct a UD request packet
* @qp: the QP
@ -263,18 +471,12 @@ drop:
int hfi1_make_ud_req(struct rvt_qp *qp, struct hfi1_pkt_state *ps)
{
struct hfi1_qp_priv *priv = qp->priv;
struct ib_other_headers *ohdr;
struct rdma_ah_attr *ah_attr;
struct hfi1_pportdata *ppd;
struct hfi1_ibport *ibp;
struct rvt_swqe *wqe;
u32 nwords;
u32 extra_bytes;
u32 bth0;
u16 lrh0;
u16 lid;
int next_cur;
u8 sc5;
u32 lid;
ps->s_txreq = get_txreq(ps->dev, qp);
if (IS_ERR(ps->s_txreq))
@ -311,13 +513,14 @@ int hfi1_make_ud_req(struct rvt_qp *qp, struct hfi1_pkt_state *ps)
ibp = to_iport(qp->ibqp.device, qp->port_num);
ppd = ppd_from_ibp(ibp);
ah_attr = &ibah_to_rvtah(wqe->ud_wr.ah)->attr;
if (rdma_ah_get_dlid(ah_attr) < be16_to_cpu(IB_MULTICAST_LID_BASE) ||
rdma_ah_get_dlid(ah_attr) == be16_to_cpu(IB_LID_PERMISSIVE)) {
priv->hdr_type = hfi1_get_hdr_type(ppd->lid, ah_attr);
if ((!hfi1_check_mcast(rdma_ah_get_dlid(ah_attr))) ||
(rdma_ah_get_dlid(ah_attr) == be32_to_cpu(OPA_LID_PERMISSIVE))) {
lid = rdma_ah_get_dlid(ah_attr) & ~((1 << ppd->lmc) - 1);
if (unlikely(!loopback &&
(lid == ppd->lid ||
(lid == be16_to_cpu(IB_LID_PERMISSIVE) &&
qp->ibqp.qp_type == IB_QPT_GSI)))) {
((lid == ppd->lid) ||
((lid == be32_to_cpu(OPA_LID_PERMISSIVE)) &&
(qp->ibqp.qp_type == IB_QPT_GSI))))) {
unsigned long tflags = ps->flags;
/*
* If DMAs are in progress, we can't generate
@ -341,11 +544,6 @@ int hfi1_make_ud_req(struct rvt_qp *qp, struct hfi1_pkt_state *ps)
}
qp->s_cur = next_cur;
extra_bytes = -wqe->length & 3;
nwords = (wqe->length + extra_bytes) >> 2;
/* header size in 32-bit words LRH+BTH+DETH = (8+12+8)/4. */
qp->s_hdrwords = 7;
ps->s_txreq->s_cur_size = wqe->length;
ps->s_txreq->ss = &qp->s_sge;
qp->s_srate = rdma_ah_get_static_rate(ah_attr);
@ -356,78 +554,12 @@ int hfi1_make_ud_req(struct rvt_qp *qp, struct hfi1_pkt_state *ps)
qp->s_sge.num_sge = wqe->wr.num_sge;
qp->s_sge.total_len = wqe->length;
if (rdma_ah_get_ah_flags(ah_attr) & IB_AH_GRH) {
/* Header size in 32-bit words. */
qp->s_hdrwords +=
hfi1_make_grh(ibp,
&ps->s_txreq->phdr.hdr.ibh.u.l.grh,
rdma_ah_read_grh(ah_attr),
qp->s_hdrwords, nwords);
lrh0 = HFI1_LRH_GRH;
ohdr = &ps->s_txreq->phdr.hdr.ibh.u.l.oth;
/*
* Don't worry about sending to locally attached multicast
* QPs. It is unspecified by the spec. what happens.
*/
} else {
/* Header size in 32-bit words. */
lrh0 = HFI1_LRH_BTH;
ohdr = &ps->s_txreq->phdr.hdr.ibh.u.oth;
}
if (wqe->wr.opcode == IB_WR_SEND_WITH_IMM) {
qp->s_hdrwords++;
ohdr->u.ud.imm_data = wqe->wr.ex.imm_data;
bth0 = IB_OPCODE_UD_SEND_ONLY_WITH_IMMEDIATE << 24;
} else {
bth0 = IB_OPCODE_UD_SEND_ONLY << 24;
}
sc5 = ibp->sl_to_sc[rdma_ah_get_sl(ah_attr)];
lrh0 |= (rdma_ah_get_sl(ah_attr) & 0xf) << 4;
if (qp->ibqp.qp_type == IB_QPT_SMI) {
lrh0 |= 0xF000; /* Set VL (see ch. 13.5.3.1) */
priv->s_sc = 0xf;
} else {
lrh0 |= (sc5 & 0xf) << 12;
priv->s_sc = sc5;
}
/* Make the appropriate header */
hfi1_make_ud_req_tbl[priv->hdr_type](qp, ps, qp->s_wqe);
priv->s_sde = qp_to_sdma_engine(qp, priv->s_sc);
ps->s_txreq->sde = priv->s_sde;
priv->s_sendcontext = qp_to_send_context(qp, priv->s_sc);
ps->s_txreq->psc = priv->s_sendcontext;
ps->s_txreq->phdr.hdr.ibh.lrh[0] = cpu_to_be16(lrh0);
ps->s_txreq->phdr.hdr.ibh.lrh[1] =
cpu_to_be16(rdma_ah_get_dlid(ah_attr));
ps->s_txreq->phdr.hdr.ibh.lrh[2] =
cpu_to_be16(qp->s_hdrwords + nwords + SIZE_OF_CRC);
if (rdma_ah_get_dlid(ah_attr) == be16_to_cpu(IB_LID_PERMISSIVE)) {
ps->s_txreq->phdr.hdr.ibh.lrh[3] = IB_LID_PERMISSIVE;
} else {
lid = ppd->lid;
if (lid) {
lid |= rdma_ah_get_path_bits(ah_attr) &
((1 << ppd->lmc) - 1);
ps->s_txreq->phdr.hdr.ibh.lrh[3] = cpu_to_be16(lid);
} else {
ps->s_txreq->phdr.hdr.ibh.lrh[3] = IB_LID_PERMISSIVE;
}
}
if (wqe->wr.send_flags & IB_SEND_SOLICITED)
bth0 |= IB_BTH_SOLICITED;
bth0 |= extra_bytes << 20;
if (qp->ibqp.qp_type == IB_QPT_GSI || qp->ibqp.qp_type == IB_QPT_SMI)
bth0 |= hfi1_get_pkey(ibp, wqe->ud_wr.pkey_index);
else
bth0 |= hfi1_get_pkey(ibp, qp->s_pkey_index);
ohdr->bth[0] = cpu_to_be32(bth0);
ohdr->bth[1] = cpu_to_be32(wqe->ud_wr.remote_qpn);
ohdr->bth[2] = cpu_to_be32(mask_psn(wqe->psn));
/*
* Qkeys with the high order bit set mean use the
* qkey from the QP context instead of the WR (see 10.2.5).
*/
ohdr->u.ud.deth[0] = cpu_to_be32((int)wqe->ud_wr.remote_qkey < 0 ?
qp->qkey : wqe->ud_wr.remote_qkey);
ohdr->u.ud.deth[1] = cpu_to_be32(qp->ibqp.qp_num);
/* disarm any ahg */
priv->s_ahg->ahgcount = 0;
priv->s_ahg->ahgidx = 0;
@ -497,6 +629,64 @@ int hfi1_lookup_pkey_idx(struct hfi1_ibport *ibp, u16 pkey)
return -1;
}
void return_cnp_16B(struct hfi1_ibport *ibp, struct rvt_qp *qp,
u32 remote_qpn, u32 pkey, u32 slid, u32 dlid,
u8 sc5, const struct ib_grh *old_grh)
{
u64 pbc, pbc_flags = 0;
u32 bth0, plen, vl, hwords = 7;
u16 len;
u8 l4;
struct hfi1_16b_header hdr;
struct ib_other_headers *ohdr;
struct pio_buf *pbuf;
struct send_context *ctxt = qp_to_send_context(qp, sc5);
struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
u32 nwords;
/* Populate length */
nwords = ((hfi1_get_16b_padding(hwords << 2, 0) +
SIZE_OF_LT) >> 2) + SIZE_OF_CRC;
if (old_grh) {
struct ib_grh *grh = &hdr.u.l.grh;
grh->version_tclass_flow = old_grh->version_tclass_flow;
grh->paylen = cpu_to_be16((hwords - 4 + nwords) << 2);
grh->hop_limit = 0xff;
grh->sgid = old_grh->dgid;
grh->dgid = old_grh->sgid;
ohdr = &hdr.u.l.oth;
l4 = OPA_16B_L4_IB_GLOBAL;
hwords += sizeof(struct ib_grh) / sizeof(u32);
} else {
ohdr = &hdr.u.oth;
l4 = OPA_16B_L4_IB_LOCAL;
}
/* BIT 16 to 19 is TVER. Bit 20 to 22 is pad cnt */
bth0 = (IB_OPCODE_CNP << 24) | (1 << 16) |
(hfi1_get_16b_padding(hwords << 2, 0) << 20);
ohdr->bth[0] = cpu_to_be32(bth0);
ohdr->bth[1] = cpu_to_be32(remote_qpn);
ohdr->bth[2] = 0; /* PSN 0 */
/* Convert dwords to flits */
len = (hwords + nwords) >> 1;
hfi1_make_16b_hdr(&hdr, slid, dlid, len, pkey, 1, 0, l4, sc5);
plen = 2 /* PBC */ + hwords + nwords;
pbc_flags |= PBC_PACKET_BYPASS | PBC_INSERT_BYPASS_ICRC;
vl = sc_to_vlt(ppd->dd, sc5);
pbc = create_pbc(ppd, pbc_flags, qp->srate_mbps, vl, plen);
if (ctxt) {
pbuf = sc_buffer_alloc(ctxt, plen, NULL, NULL);
if (pbuf)
ppd->dd->pio_inline_send(ppd->dd, pbuf, pbc,
&hdr, hwords);
}
}
void return_cnp(struct hfi1_ibport *ibp, struct rvt_qp *qp, u32 remote_qpn,
u32 pkey, u32 slid, u32 dlid, u8 sc5,
const struct ib_grh *old_grh)
@ -535,11 +725,7 @@ void return_cnp(struct hfi1_ibport *ibp, struct rvt_qp *qp, u32 remote_qpn,
ohdr->bth[1] = cpu_to_be32(remote_qpn | (1 << IB_BECN_SHIFT));
ohdr->bth[2] = 0; /* PSN 0 */
hdr.lrh[0] = cpu_to_be16(lrh0);
hdr.lrh[1] = cpu_to_be16(dlid);
hdr.lrh[2] = cpu_to_be16(hwords + SIZE_OF_CRC);
hdr.lrh[3] = cpu_to_be16(slid);
hfi1_make_ib_hdr(&hdr, lrh0, hwords + SIZE_OF_CRC, dlid, slid);
plen = 2 /* PBC */ + hwords;
pbc_flags |= (ib_is_sc5(sc5) << PBC_DC_INFO_SHIFT);
vl = sc_to_vlt(ppd->dd, sc5);
@ -672,18 +858,33 @@ void hfi1_ud_rcv(struct hfi1_packet *packet)
void *data = packet->payload;
u32 tlen = packet->tlen;
struct rvt_qp *qp = packet->qp;
u8 sc5 = hfi1_9B_get_sc5(hdr, packet->rhf);
u8 sc5 = packet->sc;
u8 sl_from_sc;
u8 extra_bytes = packet->pad;
u8 opcode = packet->opcode;
u8 sl = packet->sl;
u32 dlid = packet->dlid;
u32 slid = packet->slid;
u8 extra_bytes;
bool dlid_is_permissive;
bool slid_is_permissive;
extra_bytes = packet->pad + packet->extra_byte + (SIZE_OF_CRC << 2);
qkey = ib_get_qkey(ohdr);
src_qp = ib_get_sqpn(ohdr);
if (packet->etype == RHF_RCV_TYPE_BYPASS) {
u32 permissive_lid =
opa_get_lid(be32_to_cpu(OPA_LID_PERMISSIVE), 16B);
pkey = hfi1_16B_get_pkey(packet->hdr);
dlid_is_permissive = (dlid == permissive_lid);
slid_is_permissive = (slid == permissive_lid);
} else {
hdr = packet->hdr;
pkey = ib_bth_get_pkey(ohdr);
extra_bytes += (SIZE_OF_CRC << 2);
dlid_is_permissive = (dlid == be16_to_cpu(IB_LID_PERMISSIVE));
slid_is_permissive = (slid == be16_to_cpu(IB_LID_PERMISSIVE));
}
sl_from_sc = ibp->sc_to_sl[sc5];
process_ecn(qp, packet, (opcode != IB_OPCODE_CNP));
@ -701,8 +902,7 @@ void hfi1_ud_rcv(struct hfi1_packet *packet)
* and the QKEY matches (see 9.6.1.4.1 and 9.6.1.5.1).
*/
if (qp->ibqp.qp_num) {
if (unlikely(hdr->lrh[1] == IB_LID_PERMISSIVE ||
hdr->lrh[3] == IB_LID_PERMISSIVE))
if (unlikely(dlid_is_permissive || slid_is_permissive))
goto drop;
if (qp->ibqp.qp_num > 1) {
if (unlikely(rcv_pkey_check(ppd, pkey, sc5, slid))) {
@ -740,8 +940,7 @@ void hfi1_ud_rcv(struct hfi1_packet *packet)
if (tlen > 2048)
goto drop;
if ((hdr->lrh[1] == IB_LID_PERMISSIVE ||
hdr->lrh[3] == IB_LID_PERMISSIVE) &&
if ((dlid_is_permissive || slid_is_permissive) &&
smp->mgmt_class != IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE)
goto drop;
@ -794,7 +993,18 @@ void hfi1_ud_rcv(struct hfi1_packet *packet)
goto drop;
}
if (packet->grh) {
hfi1_copy_sge(&qp->r_sge, &hdr->u.l.grh,
hfi1_copy_sge(&qp->r_sge, packet->grh,
sizeof(struct ib_grh), true, false);
wc.wc_flags |= IB_WC_GRH;
} else if (packet->etype == RHF_RCV_TYPE_BYPASS) {
struct ib_grh grh;
/*
* Assuming we only created 16B on the send side
* if we want to use large LIDs, since GRH was stripped
* out when creating 16B, add back the GRH here.
*/
hfi1_make_ext_grh(packet, &grh, slid, dlid);
hfi1_copy_sge(&qp->r_sge, &grh,
sizeof(struct ib_grh), true, false);
wc.wc_flags |= IB_WC_GRH;
} else {
@ -827,14 +1037,15 @@ void hfi1_ud_rcv(struct hfi1_packet *packet)
} else {
wc.pkey_index = 0;
}
if (slid_is_permissive)
slid = be32_to_cpu(OPA_LID_PERMISSIVE);
wc.slid = slid;
wc.sl = sl_from_sc;
/*
* Save the LMC lower bits if the destination LID is a unicast LID.
*/
wc.dlid_path_bits = dlid >= be16_to_cpu(IB_MULTICAST_LID_BASE) ? 0 :
wc.dlid_path_bits = hfi1_check_mcast(dlid) ? 0 :
dlid & ((1 << ppd_from_ibp(ibp)->lmc) - 1);
wc.port_num = qp->port_num;
/* Signal completion event if the solicited bit is set. */

2
drivers/infiniband/hw/hfi1/verbs.h
View File

@ -259,7 +259,7 @@ static inline int hfi1_send_ok(struct rvt_qp *qp)
* This must be called with s_lock held.
*/
void hfi1_bad_pkey(struct hfi1_ibport *ibp, u32 key, u32 sl,
u32 qp1, u32 qp2, u16 lid1, u16 lid2);
u32 qp1, u32 qp2, u32 lid1, u32 lid2);
void hfi1_cap_mask_chg(struct rvt_dev_info *rdi, u8 port_num);
void hfi1_sys_guid_chg(struct hfi1_ibport *ibp);
void hfi1_node_desc_chg(struct hfi1_ibport *ibp);

1
include/rdma/opa_addr.h
View File

@ -54,6 +54,7 @@
#define OPA_MAKE_ID(x) (cpu_to_be64(OPA_SPECIAL_OUI << 40 | (x)))
#define OPA_TO_IB_UCAST_LID(x) (((x) >= be16_to_cpu(IB_MULTICAST_LID_BASE)) \
? 0 : x)
#define OPA_GID_INDEX 0x1
/**
* 0xF8 - 4 bits of multicast range and 1 bit for collective range
* Example: For 24 bit LID space,