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IB/hfi1: Add 16B UD support

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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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117
drivers/infiniband/hw/hfi1/hfi.h
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@@ -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;
bth1 = be32_to_cpu(ohdr->bth[1]);
if (unlikely(bth1 & (IB_BECN_SMASK | IB_FECN_SMASK))) {
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]);
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 */