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| author | Jack Morgenstein <jackm@mellanox.co.il> | 2006-02-26 16:05:59 -0800 |
|---|---|---|
| committer | Roland Dreier <rolandd@cisco.com> | 2006-03-20 10:08:17 -0800 |
| commit | 1d89b1ae6c203bc68a3f424be144abcdf62773c9 (patch) | |
| tree | 9d1979c98843ba7d18f6272f13ea06c2591ee8d5 /drivers/infiniband/hw/mthca/mthca_av.c | |
| parent | 14abdffcc0a0ca9c5bb3274648d073e09a6fd2ba (diff) | |
| download | blackbird-op-linux-1d89b1ae6c203bc68a3f424be144abcdf62773c9.tar.gz blackbird-op-linux-1d89b1ae6c203bc68a3f424be144abcdf62773c9.zip | |
IB/mthca: Implement query_ah method
Implement query_ah (except for AVs which are in HCA memory). This is
needed to implement RMPP duplicate session detection on sending side
(extraction of DGID/DLID and GRH flag from address handle).
Signed-off-by: Jack Morgenstein <jackm@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/infiniband/hw/mthca/mthca_av.c')
| -rw-r--r-- | drivers/infiniband/hw/mthca/mthca_av.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/mthca/mthca_av.c b/drivers/infiniband/hw/mthca/mthca_av.c index 198f1267e984..f023d3936518 100644 --- a/drivers/infiniband/hw/mthca/mthca_av.c +++ b/drivers/infiniband/hw/mthca/mthca_av.c @@ -193,6 +193,37 @@ int mthca_read_ah(struct mthca_dev *dev, struct mthca_ah *ah, return 0; } +int mthca_ah_query(struct ib_ah *ibah, struct ib_ah_attr *attr) +{ + struct mthca_ah *ah = to_mah(ibah); + struct mthca_dev *dev = to_mdev(ibah->device); + + /* Only implement for MAD and memfree ah for now. */ + if (ah->type == MTHCA_AH_ON_HCA) + return -ENOSYS; + + memset(attr, 0, sizeof *attr); + attr->dlid = be16_to_cpu(ah->av->dlid); + attr->sl = be32_to_cpu(ah->av->sl_tclass_flowlabel) >> 28; + attr->static_rate = ah->av->msg_sr & 0x7; + attr->src_path_bits = ah->av->g_slid & 0x7F; + attr->port_num = be32_to_cpu(ah->av->port_pd) >> 24; + attr->ah_flags = mthca_ah_grh_present(ah) ? IB_AH_GRH : 0; + + if (attr->ah_flags) { + attr->grh.traffic_class = + be32_to_cpu(ah->av->sl_tclass_flowlabel) >> 20; + attr->grh.flow_label = + be32_to_cpu(ah->av->sl_tclass_flowlabel) & 0xfffff; + attr->grh.hop_limit = ah->av->hop_limit; + attr->grh.sgid_index = ah->av->gid_index & + (dev->limits.gid_table_len - 1); + memcpy(attr->grh.dgid.raw, ah->av->dgid, 16); + } + + return 0; +} + int __devinit mthca_init_av_table(struct mthca_dev *dev) { int err; |
