Sean Hefty wrote:
+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->sgid.global.subnet_prefix != rec->dgid.global.subnet_prefix) {
+ ah_attr->ah_flags = IB_AH_GRH;
I should note that I compared the subnet prefixes to determine if the GRH should
be used. Reading back over the 'GRH flag in ib_ah_attr' thread, it looks like
there's consensus that hop_limit > 1 is the check that we want. I will update
the code accordingly.
- Sean
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