Hi，All
I am developing the cm for vlan device. I have a question need to help from you.
I grap the packet content for REQ packet. the value of primary local port GID field is
the same when use vlan device with non-vlan device.
I think that it is incorrect. I have a question after analysised the flow of cm.
why the rec->sgid is fixed and the value is translated by the non-vlan device when
use vlan device.
The interface and code as follows:
int ib_init_ah_attr_from_path(struct ib_device *device, u8 port_num,
struct sa_path_rec *rec,
struct rdma_ah_attr *ah_attr)
{
int ret;
u16 gid_index;
int use_roce;
struct net_device *ndev = NULL;
memset(ah_attr, 0, sizeof *ah_attr);
ah_attr->type = rdma_ah_find_type(device, port_num);
rdma_ah_set_dlid(ah_attr, be32_to_cpu(sa_path_get_dlid(rec)));
if ((ah_attr->type == RDMA_AH_ATTR_TYPE_OPA) &&
(rdma_ah_get_dlid(ah_attr) == be16_to_cpu(IB_LID_PERMISSIVE)))
rdma_ah_set_make_grd(ah_attr, true);
rdma_ah_set_sl(ah_attr, rec->sl);
rdma_ah_set_path_bits(ah_attr, be32_to_cpu(sa_path_get_slid(rec)) &
get_src_path_mask(device, port_num));
rdma_ah_set_port_num(ah_attr, port_num);
rdma_ah_set_static_rate(ah_attr, rec->rate);
use_roce = rdma_cap_eth_ah(device, port_num);
if (use_roce) {
struct net_device *idev;
struct net_device *resolved_dev;
struct rdma_dev_addr dev_addr = {
.bound_dev_if = ((sa_path_get_ifindex(rec) >= 0) ?
sa_path_get_ifindex(rec) : 0),
.net = sa_path_get_ndev(rec) ?
sa_path_get_ndev(rec) :
&init_net
};
union {
struct sockaddr _sockaddr;
struct sockaddr_in _sockaddr_in;
struct sockaddr_in6 _sockaddr_in6;
} sgid_addr, dgid_addr;
if (!device->get_netdev)
return -EOPNOTSUPP;
rdma_gid2ip(&sgid_addr._sockaddr, &rec->sgid);
rdma_gid2ip(&dgid_addr._sockaddr, &rec->dgid);
...
...
...
}
>From my point, I think that it is different with vlan device and non vlan device.
Thanks
Lijun Ou
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