diff options
| -rw-r--r-- | drivers/infiniband/core/verbs.c | 35 | ||||
| -rw-r--r-- | drivers/infiniband/include/ib_mad.h | 9 | ||||
| -rw-r--r-- | drivers/infiniband/include/ib_verbs.h | 24 |
3 files changed, 59 insertions, 9 deletions
diff --git a/drivers/infiniband/core/verbs.c b/drivers/infiniband/core/verbs.c index 2516f9646515..62951594eec6 100644 --- a/drivers/infiniband/core/verbs.c +++ b/drivers/infiniband/core/verbs.c @@ -41,6 +41,7 @@ #include <linux/err.h> #include <ib_verbs.h> +#include <ib_cache.h> /* Protection domains */ @@ -88,6 +89,40 @@ struct ib_ah *ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr) } EXPORT_SYMBOL(ib_create_ah); +struct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, struct ib_wc *wc, + struct ib_grh *grh, u8 port_num) +{ + struct ib_ah_attr ah_attr; + u32 flow_class; + u16 gid_index; + int ret; + + memset(&ah_attr, 0, sizeof ah_attr); + ah_attr.dlid = wc->slid; + ah_attr.sl = wc->sl; + ah_attr.src_path_bits = wc->dlid_path_bits; + ah_attr.port_num = port_num; + + if (wc->wc_flags & IB_WC_GRH) { + ah_attr.ah_flags = IB_AH_GRH; + ah_attr.grh.dgid = grh->dgid; + + ret = ib_find_cached_gid(pd->device, &grh->sgid, &port_num, + &gid_index); + if (ret) + return ERR_PTR(ret); + + ah_attr.grh.sgid_index = (u8) gid_index; + flow_class = be32_to_cpu(&grh->version_tclass_flow); + ah_attr.grh.flow_label = flow_class & 0xFFFFF; + ah_attr.grh.traffic_class = (flow_class >> 20) & 0xFF; + ah_attr.grh.hop_limit = grh->hop_limit; + } + + return ib_create_ah(pd, &ah_attr); +} +EXPORT_SYMBOL(ib_create_ah_from_wc); + int ib_modify_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr) { return ah->device->modify_ah ? diff --git a/drivers/infiniband/include/ib_mad.h b/drivers/infiniband/include/ib_mad.h index c5f3170c59ef..817e932c79c0 100644 --- a/drivers/infiniband/include/ib_mad.h +++ b/drivers/infiniband/include/ib_mad.h @@ -77,15 +77,6 @@ #define IB_QP1_QKEY 0x80010000 #define IB_QP_SET_QKEY 0x80000000 -struct ib_grh { - u32 version_tclass_flow; - u16 paylen; - u8 next_hdr; - u8 hop_limit; - union ib_gid sgid; - union ib_gid dgid; -} __attribute__ ((packed)); - struct ib_mad_hdr { u8 base_version; u8 mgmt_class; diff --git a/drivers/infiniband/include/ib_verbs.h b/drivers/infiniband/include/ib_verbs.h index b6107c4b683a..5d24edaa66e6 100644 --- a/drivers/infiniband/include/ib_verbs.h +++ b/drivers/infiniband/include/ib_verbs.h @@ -289,6 +289,15 @@ struct ib_global_route { u8 traffic_class; }; +struct ib_grh { + u32 version_tclass_flow; + u16 paylen; + u8 next_hdr; + u8 hop_limit; + union ib_gid sgid; + union ib_gid dgid; +}; + enum { IB_MULTICAST_QPN = 0xffffff }; @@ -991,6 +1000,21 @@ int ib_dealloc_pd(struct ib_pd *pd); struct ib_ah *ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr); /** + * ib_create_ah_from_wc - Creates an address handle associated with the + * sender of the specified work completion. + * @pd: The protection domain associated with the address handle. + * @wc: Work completion information associated with a received message. + * @grh: References the received global route header. This parameter is + * ignored unless the work completion indicates that the GRH is valid. + * @port_num: The outbound port number to associate with the address. + * + * The address handle is used to reference a local or global destination + * in all UD QP post sends. + */ +struct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, struct ib_wc *wc, + struct ib_grh *grh, u8 port_num); + +/** * ib_modify_ah - Modifies the address vector associated with an address * handle. * @ah: The address handle to modify. |