diff options
| -rw-r--r-- | drivers/infiniband/core/verbs.c | 44 | ||||
| -rw-r--r-- | include/rdma/ib_verbs.h | 14 |
2 files changed, 42 insertions, 16 deletions
diff --git a/drivers/infiniband/core/verbs.c b/drivers/infiniband/core/verbs.c index b78e7dc69330..468999c38803 100644 --- a/drivers/infiniband/core/verbs.c +++ b/drivers/infiniband/core/verbs.c @@ -125,35 +125,47 @@ 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) +int ib_init_ah_from_wc(struct ib_device *device, u8 port_num, struct ib_wc *wc, + struct ib_grh *grh, struct ib_ah_attr *ah_attr) { - 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; + 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->sgid; + ah_attr->ah_flags = IB_AH_GRH; + ah_attr->grh.dgid = grh->sgid; - ret = ib_find_cached_gid(pd->device, &grh->dgid, &port_num, + ret = ib_find_cached_gid(device, &grh->dgid, &port_num, &gid_index); if (ret) - return ERR_PTR(ret); + return ret; - ah_attr.grh.sgid_index = (u8) gid_index; + 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; + ah_attr->grh.flow_label = flow_class & 0xFFFFF; + ah_attr->grh.hop_limit = grh->hop_limit; + ah_attr->grh.traffic_class = (flow_class >> 20) & 0xFF; } + return 0; +} +EXPORT_SYMBOL(ib_init_ah_from_wc); + +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; + int ret; + + ret = ib_init_ah_from_wc(pd->device, port_num, wc, grh, &ah_attr); + if (ret) + return ERR_PTR(ret); return ib_create_ah(pd, &ah_attr); } diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h index 10a6268c2cc2..7ced208edacf 100644 --- a/include/rdma/ib_verbs.h +++ b/include/rdma/ib_verbs.h @@ -1088,6 +1088,20 @@ 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_init_ah_from_wc - Initializes address handle attributes from a + * work completion. + * @device: Device on which the received message arrived. + * @port_num: Port on which the received message arrived. + * @wc: Work completion associated with the received message. + * @grh: References the received global route header. This parameter is + * ignored unless the work completion indicates that the GRH is valid. + * @ah_attr: Returned attributes that can be used when creating an address + * handle for replying to the message. + */ +int ib_init_ah_from_wc(struct ib_device *device, u8 port_num, struct ib_wc *wc, + struct ib_grh *grh, 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. |