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| author | Sowmini Varadhan <sowmini.varadhan@oracle.com> | 2016-07-14 03:51:03 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-07-15 11:36:58 -0700 |
| commit | 5916e2c1554f3e36f770401c989c3c7fadf619ca (patch) | |
| tree | e2f85d0d6ad83d6835b131956324d6e30c4eda3e /net/rds/bind.c | |
| parent | ac3615e7f3cffe2a1a6b25172dfd09e138593d82 (diff) | |
| download | linux-5916e2c1554f3e36f770401c989c3c7fadf619ca.tar.gz linux-5916e2c1554f3e36f770401c989c3c7fadf619ca.tar.xz | |
RDS: TCP: Enable multipath RDS for TCP
Use RDS probe-ping to compute how many paths may be used with
the peer, and to synchronously start the multiple paths. If mprds is
supported, hash outgoing traffic to one of multiple paths in rds_sendmsg()
when multipath RDS is supported by the transport.
CC: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/rds/bind.c')
| -rw-r--r-- | net/rds/bind.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/net/rds/bind.c b/net/rds/bind.c index b22ea956522b..095f6ce583fe 100644 --- a/net/rds/bind.c +++ b/net/rds/bind.c @@ -81,6 +81,8 @@ static int rds_add_bound(struct rds_sock *rs, __be32 addr, __be16 *port) if (*port != 0) { rover = be16_to_cpu(*port); + if (rover == RDS_FLAG_PROBE_PORT) + return -EINVAL; last = rover; } else { rover = max_t(u16, prandom_u32(), 2); @@ -91,12 +93,16 @@ static int rds_add_bound(struct rds_sock *rs, __be32 addr, __be16 *port) if (rover == 0) rover++; + if (rover == RDS_FLAG_PROBE_PORT) + continue; key = ((u64)addr << 32) | cpu_to_be16(rover); if (rhashtable_lookup_fast(&bind_hash_table, &key, ht_parms)) continue; rs->rs_bound_key = key; rs->rs_bound_addr = addr; + net_get_random_once(&rs->rs_hash_initval, + sizeof(rs->rs_hash_initval)); rs->rs_bound_port = cpu_to_be16(rover); rs->rs_bound_node.next = NULL; rds_sock_addref(rs); |