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IB/umad: Implement GRH handling for sent/received MADs 

We need to set the SGID index for routed MADs and pass received
GRH information to userspace when a MAD is received.

Signed-off-by: Sean Hefty <sean.hefty@intel.com>
This commit is contained in:
Sean Hefty 2007-04-05 11:49:21 -07:00 committed by Roland Dreier
parent 46f1b3d7af
commit aeba84a925
1 changed files with 12 additions and 6 deletions
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18
drivers/infiniband/core/user_mad.c
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@ -231,12 +231,17 @@ static void recv_handler(struct ib_mad_agent *agent,
packet->mad.hdr.path_bits = mad_recv_wc->wc->dlid_path_bits;
packet->mad.hdr.grh_present = !!(mad_recv_wc->wc->wc_flags & IB_WC_GRH);
if (packet->mad.hdr.grh_present) {
/* XXX parse GRH */
packet->mad.hdr.gid_index = 0;
packet->mad.hdr.hop_limit = 0;
packet->mad.hdr.traffic_class = 0;
memset(packet->mad.hdr.gid, 0, 16);
packet->mad.hdr.flow_label = 0;
struct ib_ah_attr ah_attr;
ib_init_ah_from_wc(agent->device, agent->port_num,
mad_recv_wc->wc, mad_recv_wc->recv_buf.grh,
&ah_attr);
packet->mad.hdr.gid_index = ah_attr.grh.sgid_index;
packet->mad.hdr.hop_limit = ah_attr.grh.hop_limit;
packet->mad.hdr.traffic_class = ah_attr.grh.traffic_class;
memcpy(packet->mad.hdr.gid, &ah_attr.grh.dgid, 16);
packet->mad.hdr.flow_label = cpu_to_be32(ah_attr.grh.flow_label);
}
if (queue_packet(file, agent, packet))
@ -473,6 +478,7 @@ static ssize_t ib_umad_write(struct file *filp, const char __user *buf,
if (packet->mad.hdr.grh_present) {
ah_attr.ah_flags = IB_AH_GRH;
memcpy(ah_attr.grh.dgid.raw, packet->mad.hdr.gid, 16);
ah_attr.grh.sgid_index = packet->mad.hdr.gid_index;
ah_attr.grh.flow_label = be32_to_cpu(packet->mad.hdr.flow_label);
ah_attr.grh.hop_limit = packet->mad.hdr.hop_limit;
ah_attr.grh.traffic_class = packet->mad.hdr.traffic_class;