diff options
Diffstat (limited to 'drivers/infiniband/hw/hfi1/hfi.h')
| -rw-r--r-- | drivers/infiniband/hw/hfi1/hfi.h | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/hfi1/hfi.h b/drivers/infiniband/hw/hfi1/hfi.h index ee19660ca2fa..cec9590870ba 100644 --- a/drivers/infiniband/hw/hfi1/hfi.h +++ b/drivers/infiniband/hw/hfi1/hfi.h @@ -70,6 +70,7 @@ #include <linux/rhashtable.h> #include <linux/netdevice.h> #include <rdma/rdma_vt.h> +#include <rdma/opa_addr.h> #include "chip_registers.h" #include "common.h" @@ -353,6 +354,10 @@ struct hfi1_packet { bool fecn; }; +/* Packet types */ +#define HFI1_PKT_TYPE_9B 0 +#define HFI1_PKT_TYPE_16B 1 + /* * OPA 16B Header */ @@ -2170,6 +2175,31 @@ int hfi1_tempsense_rd(struct hfi1_devdata *dd, struct hfi1_temp *temp); #define DD_DEV_ENTRY(dd) __string(dev, dev_name(&(dd)->pcidev->dev)) #define DD_DEV_ASSIGN(dd) __assign_str(dev, dev_name(&(dd)->pcidev->dev)) +static inline void hfi1_update_ah_attr(struct ib_device *ibdev, + struct rdma_ah_attr *attr) +{ + struct hfi1_pportdata *ppd; + struct hfi1_ibport *ibp; + u32 dlid = rdma_ah_get_dlid(attr); + + /* + * Kernel clients may not have setup GRH information + * Set that here. + */ + ibp = to_iport(ibdev, rdma_ah_get_port_num(attr)); + ppd = ppd_from_ibp(ibp); + if ((((dlid >= be16_to_cpu(IB_MULTICAST_LID_BASE)) || + (ppd->lid >= be16_to_cpu(IB_MULTICAST_LID_BASE))) && + (dlid != be32_to_cpu(OPA_LID_PERMISSIVE)) && + (dlid != be16_to_cpu(IB_LID_PERMISSIVE)) && + (!(rdma_ah_get_ah_flags(attr) & IB_AH_GRH))) || + (rdma_ah_get_make_grd(attr))) { + rdma_ah_set_ah_flags(attr, IB_AH_GRH); + rdma_ah_set_interface_id(attr, OPA_MAKE_ID(dlid)); + rdma_ah_set_subnet_prefix(attr, ibp->rvp.gid_prefix); + } +} + /* * hfi1_check_mcast- Check if the given lid is * in the OPA multicast range. @@ -2223,4 +2253,66 @@ static inline bool hfi1_is_16B_mcast(u32 lid) opa_get_lid(opa_get_mcast_base(OPA_MCAST_NR), 16B)) && (lid != opa_get_lid(be32_to_cpu(OPA_LID_PERMISSIVE), 16B))); } + +static inline void hfi1_make_opa_lid(struct rdma_ah_attr *attr) +{ + const struct ib_global_route *grh = rdma_ah_read_grh(attr); + u32 dlid = rdma_ah_get_dlid(attr); + + /* Modify ah_attr.dlid to be in the 32 bit LID space. + * This is how the address will be laid out: + * Assuming MCAST_NR to be 4, + * 32 bit permissive LID = 0xFFFFFFFF + * Multicast LID range = 0xFFFFFFFE to 0xF0000000 + * Unicast LID range = 0xEFFFFFFF to 1 + * Invalid LID = 0 + */ + if (ib_is_opa_gid(&grh->dgid)) + dlid = opa_get_lid_from_gid(&grh->dgid); + else if ((dlid >= be16_to_cpu(IB_MULTICAST_LID_BASE)) && + (dlid != be16_to_cpu(IB_LID_PERMISSIVE)) && + (dlid != be32_to_cpu(OPA_LID_PERMISSIVE))) + dlid = dlid - be16_to_cpu(IB_MULTICAST_LID_BASE) + + opa_get_mcast_base(OPA_MCAST_NR); + else if (dlid == be16_to_cpu(IB_LID_PERMISSIVE)) + dlid = be32_to_cpu(OPA_LID_PERMISSIVE); + + rdma_ah_set_dlid(attr, dlid); +} + +static inline u8 hfi1_get_packet_type(u32 lid) +{ + /* 9B if lid > 0xF0000000 */ + if (lid >= opa_get_mcast_base(OPA_MCAST_NR)) + return HFI1_PKT_TYPE_9B; + + /* 16B if lid > 0xC000 */ + if (lid >= opa_get_lid(opa_get_mcast_base(OPA_MCAST_NR), 9B)) + return HFI1_PKT_TYPE_16B; + + return HFI1_PKT_TYPE_9B; +} + +static inline bool hfi1_get_hdr_type(u32 lid, struct rdma_ah_attr *attr) +{ + /* + * If there was an incoming 16B packet with permissive + * LIDs, OPA GIDs would have been programmed when those + * packets were received. A 16B packet will have to + * be sent in response to that packet. Return a 16B + * header type if that's the case. + */ + if (rdma_ah_get_dlid(attr) == be32_to_cpu(OPA_LID_PERMISSIVE)) + return (ib_is_opa_gid(&rdma_ah_read_grh(attr)->dgid)) ? + HFI1_PKT_TYPE_16B : HFI1_PKT_TYPE_9B; + + /* + * Return a 16B header type if either the the destination + * or source lid is extended. + */ + if (hfi1_get_packet_type(rdma_ah_get_dlid(attr)) == HFI1_PKT_TYPE_16B) + return HFI1_PKT_TYPE_16B; + + return hfi1_get_packet_type(lid); +} #endif /* _HFI1_KERNEL_H */ |