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IB/hfi1: Add support to receive 16B bypass packets

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We introduce a struct hfi1_16b_header to support 16B headers.
16B bypass packets are received by the driver and processed
similar to 9B packets. Add basic support to handle 16B packets.

Reviewed-by: Dennis Dalessandro <dennis.dalessandro@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 13:53:58 -07:00
committed by Doug Ledford
parent 13c1922288
commit 72c07e2b67
12 changed files with 274 additions and 51 deletions
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131
drivers/infiniband/hw/hfi1/hfi.h
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@@ -66,6 +66,7 @@
#include <linux/i2c.h>
#include <linux/i2c-algo-bit.h>
#include <rdma/ib_hdrs.h>
#include <rdma/opa_addr.h>
#include <linux/rhashtable.h>
#include <linux/netdevice.h>
#include <rdma/rdma_vt.h>
@@ -325,6 +326,7 @@ struct hfi1_ctxtdata {
struct hfi1_packet {
void *ebuf;
void *hdr;
void *payload;
struct hfi1_ctxtdata *rcd;
__le32 *rhf_addr;
struct rvt_qp *qp;
@@ -351,6 +353,83 @@ struct hfi1_packet {
bool fecn;
};
/*
* OPA 16B Header
*/
#define OPA_16B_L4_MASK 0xFFull
#define OPA_16B_SC_MASK 0x1F00000ull
#define OPA_16B_SC_SHIFT 20
#define OPA_16B_LID_MASK 0xFFFFFull
#define OPA_16B_DLID_MASK 0xF000ull
#define OPA_16B_DLID_SHIFT 20
#define OPA_16B_DLID_HIGH_SHIFT 12
#define OPA_16B_SLID_MASK 0xF00ull
#define OPA_16B_SLID_SHIFT 20
#define OPA_16B_SLID_HIGH_SHIFT 8
#define OPA_16B_BECN_MASK 0x80000000ull
#define OPA_16B_BECN_SHIFT 31
#define OPA_16B_FECN_MASK 0x10000000ull
#define OPA_16B_FECN_SHIFT 28
#define OPA_16B_L2_MASK 0x60000000ull
#define OPA_16B_L2_SHIFT 29
/*
* OPA 16B L2/L4 Encodings
*/
#define OPA_16B_L2_TYPE 0x02
#define OPA_16B_L4_IB_LOCAL 0x09
#define OPA_16B_L4_IB_GLOBAL 0x0A
#define OPA_16B_L4_ETHR OPA_VNIC_L4_ETHR
static inline u8 hfi1_16B_get_l4(struct hfi1_16b_header *hdr)
{
return (u8)(hdr->lrh[2] & OPA_16B_L4_MASK);
}
static inline u8 hfi1_16B_get_sc(struct hfi1_16b_header *hdr)
{
return (u8)((hdr->lrh[1] & OPA_16B_SC_MASK) >> OPA_16B_SC_SHIFT);
}
static inline u32 hfi1_16B_get_dlid(struct hfi1_16b_header *hdr)
{
return (u32)((hdr->lrh[1] & OPA_16B_LID_MASK) |
(((hdr->lrh[2] & OPA_16B_DLID_MASK) >>
OPA_16B_DLID_HIGH_SHIFT) << OPA_16B_DLID_SHIFT));
}
static inline u32 hfi1_16B_get_slid(struct hfi1_16b_header *hdr)
{
return (u32)((hdr->lrh[0] & OPA_16B_LID_MASK) |
(((hdr->lrh[2] & OPA_16B_SLID_MASK) >>
OPA_16B_SLID_HIGH_SHIFT) << OPA_16B_SLID_SHIFT));
}
static inline u8 hfi1_16B_get_becn(struct hfi1_16b_header *hdr)
{
return (u8)((hdr->lrh[0] & OPA_16B_BECN_MASK) >> OPA_16B_BECN_SHIFT);
}
static inline u8 hfi1_16B_get_fecn(struct hfi1_16b_header *hdr)
{
return (u8)((hdr->lrh[1] & OPA_16B_FECN_MASK) >> OPA_16B_FECN_SHIFT);
}
static inline u8 hfi1_16B_get_l2(struct hfi1_16b_header *hdr)
{
return (u8)((hdr->lrh[1] & OPA_16B_L2_MASK) >> OPA_16B_L2_SHIFT);
}
/*
* BTH
*/
#define OPA_16B_BTH_PAD_MASK 7
static inline u8 hfi1_16B_bth_get_pad(struct ib_other_headers *ohdr)
{
return (u8)((be32_to_cpu(ohdr->bth[0]) >> IB_BTH_PAD_SHIFT) &
OPA_16B_BTH_PAD_MASK);
}
struct rvt_sge_state;
/*
@@ -2084,11 +2163,55 @@ int hfi1_tempsense_rd(struct hfi1_devdata *dd, struct hfi1_temp *temp);
/*
* hfi1_check_mcast- Check if the given lid is
* in the IB multicast range.
* in the OPA multicast range.
*
* The LID might either reside in ah.dlid or might be
* in the GRH of the address handle as DGID if extended
* addresses are in use.
*/
static inline bool hfi1_check_mcast(u16 lid)
static inline bool hfi1_check_mcast(u32 lid)
{
return ((lid >= be16_to_cpu(IB_MULTICAST_LID_BASE)) &&
(lid != be16_to_cpu(IB_LID_PERMISSIVE)));
return ((lid >= opa_get_mcast_base(OPA_MCAST_NR)) &&
(lid != be32_to_cpu(OPA_LID_PERMISSIVE)));
}
#define opa_get_lid(lid, format) \
__opa_get_lid(lid, OPA_PORT_PACKET_FORMAT_##format)
/* Convert a lid to a specific lid space */
static inline u32 __opa_get_lid(u32 lid, u8 format)
{
bool is_mcast = hfi1_check_mcast(lid);
switch (format) {
case OPA_PORT_PACKET_FORMAT_8B:
case OPA_PORT_PACKET_FORMAT_10B:
if (is_mcast)
return (lid - opa_get_mcast_base(OPA_MCAST_NR) +
0xF0000);
return lid & 0xFFFFF;
case OPA_PORT_PACKET_FORMAT_16B:
if (is_mcast)
return (lid - opa_get_mcast_base(OPA_MCAST_NR) +
0xF00000);
return lid & 0xFFFFFF;
case OPA_PORT_PACKET_FORMAT_9B:
if (is_mcast)
return (lid -
opa_get_mcast_base(OPA_MCAST_NR) +
be16_to_cpu(IB_MULTICAST_LID_BASE));
else
return lid & 0xFFFF;
default:
return lid;
}
}
/* Return true if the given lid is the OPA 16B multicast range */
static inline bool hfi1_is_16B_mcast(u32 lid)
{
return ((lid >=
opa_get_lid(opa_get_mcast_base(OPA_MCAST_NR), 16B)) &&
(lid != opa_get_lid(be32_to_cpu(OPA_LID_PERMISSIVE), 16B)));
}
#endif /* _HFI1_KERNEL_H */