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| author | Sean Hefty <sean.hefty@intel.com> | 2006-06-17 20:37:39 -0700 |
|---|---|---|
| committer | Roland Dreier <rolandd@cisco.com> | 2006-06-17 20:37:39 -0700 |
| commit | 6d969a471ba107d94cf03dab3c69f45b9733f500 (patch) | |
| tree | 7a9fea5c2a321434e5c4c3bc590393728b85b4dd /drivers/infiniband | |
| parent | 4e00d69454a8747798de11dc4eeef1edeee5ce98 (diff) | |
| download | lwn-6d969a471ba107d94cf03dab3c69f45b9733f500.tar.gz lwn-6d969a471ba107d94cf03dab3c69f45b9733f500.zip | |
IB/sa: Add ib_init_ah_from_path()
Add a call to initialize address handle attributes given a path record.
This is used by the CM, and would be useful for users of UD QPs.
Signed-off-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/infiniband')
| -rw-r--r-- | drivers/infiniband/core/sa_query.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/drivers/infiniband/core/sa_query.c b/drivers/infiniband/core/sa_query.c index 501cc054cb3b..08d9dd5e0487 100644 --- a/drivers/infiniband/core/sa_query.c +++ b/drivers/infiniband/core/sa_query.c @@ -47,6 +47,7 @@ #include <rdma/ib_pack.h> #include <rdma/ib_sa.h> +#include <rdma/ib_cache.h> MODULE_AUTHOR("Roland Dreier"); MODULE_DESCRIPTION("InfiniBand subnet administration query support"); @@ -441,6 +442,36 @@ void ib_sa_cancel_query(int id, struct ib_sa_query *query) } EXPORT_SYMBOL(ib_sa_cancel_query); +int ib_init_ah_from_path(struct ib_device *device, u8 port_num, + struct ib_sa_path_rec *rec, struct ib_ah_attr *ah_attr) +{ + int ret; + u16 gid_index; + + memset(ah_attr, 0, sizeof *ah_attr); + ah_attr->dlid = be16_to_cpu(rec->dlid); + ah_attr->sl = rec->sl; + ah_attr->src_path_bits = be16_to_cpu(rec->slid) & 0x7f; + ah_attr->port_num = port_num; + + if (rec->hop_limit > 1) { + ah_attr->ah_flags = IB_AH_GRH; + ah_attr->grh.dgid = rec->dgid; + + ret = ib_find_cached_gid(device, &rec->sgid, &port_num, + &gid_index); + if (ret) + return ret; + + ah_attr->grh.sgid_index = gid_index; + ah_attr->grh.flow_label = be32_to_cpu(rec->flow_label); + ah_attr->grh.hop_limit = rec->hop_limit; + ah_attr->grh.traffic_class = rec->traffic_class; + } + return 0; +} +EXPORT_SYMBOL(ib_init_ah_from_path); + static void init_mad(struct ib_sa_mad *mad, struct ib_mad_agent *agent) { unsigned long flags; |