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rds: make v3.1 as compat version

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Mark RDSv3.1 as compat version and add v4.1 version macro's.
Subsequent patches enable TOS(Type of Service) feature which is
tied with v4.1 for RDMA transport.

Reviewed-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
[yanjun.zhu@oracle.com: Adapted original patch with ipv6 changes]
Signed-off-by: Zhu Yanjun <yanjun.zhu@oracle.com>
This commit is contained in:
Santosh Shilimkar 2018-10-13 20:34:42 +08:00
parent cc7335786f
commit cdc306a5c9
4 changed files with 29 additions and 17 deletions
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1
net/rds/connection.c
View File

@ -139,6 +139,7 @@ static void __rds_conn_path_init(struct rds_connection *conn,
atomic_set(&cp->cp_state, RDS_CONN_DOWN);
cp->cp_send_gen = 0;
cp->cp_reconnect_jiffies = 0;
cp->cp_conn->c_proposed_version = RDS_PROTOCOL_VERSION;
INIT_DELAYED_WORK(&cp->cp_send_w, rds_send_worker);
INIT_DELAYED_WORK(&cp->cp_recv_w, rds_recv_worker);
INIT_DELAYED_WORK(&cp->cp_conn_w, rds_connect_worker);

40
net/rds/ib_cm.c
View File

@ -133,23 +133,24 @@ void rds_ib_cm_connect_complete(struct rds_connection *conn, struct rdma_cm_even
rds_ib_set_flow_control(conn, be32_to_cpu(credit));
}
if (conn->c_version < RDS_PROTOCOL(3, 1)) {
pr_notice("RDS/IB: Connection <%pI6c,%pI6c> version %u.%u no longer supported\n",
&conn->c_laddr, &conn->c_faddr,
RDS_PROTOCOL_MAJOR(conn->c_version),
RDS_PROTOCOL_MINOR(conn->c_version));
set_bit(RDS_DESTROY_PENDING, &conn->c_path[0].cp_flags);
rds_conn_destroy(conn);
return;
} else {
pr_notice("RDS/IB: %s conn connected <%pI6c,%pI6c> version %u.%u%s\n",
ic->i_active_side ? "Active" : "Passive",
&conn->c_laddr, &conn->c_faddr,
RDS_PROTOCOL_MAJOR(conn->c_version),
RDS_PROTOCOL_MINOR(conn->c_version),
ic->i_flowctl ? ", flow control" : "");
if (conn->c_version < RDS_PROTOCOL_VERSION) {
if (conn->c_version != RDS_PROTOCOL_COMPAT_VERSION) {
pr_notice("RDS/IB: Connection <%pI6c,%pI6c> version %u.%u no longer supported\n",
&conn->c_laddr, &conn->c_faddr,
RDS_PROTOCOL_MAJOR(conn->c_version),
RDS_PROTOCOL_MINOR(conn->c_version));
rds_conn_destroy(conn);
return;
}
}
pr_notice("RDS/IB: %s conn connected <%pI6c,%pI6c> version %u.%u%s\n",
ic->i_active_side ? "Active" : "Passive",
&conn->c_laddr, &conn->c_faddr,
RDS_PROTOCOL_MAJOR(conn->c_version),
RDS_PROTOCOL_MINOR(conn->c_version),
ic->i_flowctl ? ", flow control" : "");
atomic_set(&ic->i_cq_quiesce, 0);
/* Init rings and fill recv. this needs to wait until protocol
@ -184,6 +185,7 @@ void rds_ib_cm_connect_complete(struct rds_connection *conn, struct rdma_cm_even
NULL);
}
conn->c_proposed_version = conn->c_version;
rds_connect_complete(conn);
}
@ -667,6 +669,9 @@ static u32 rds_ib_protocol_compatible(struct rdma_cm_event *event, bool isv6)
version = RDS_PROTOCOL_3_0;
while ((common >>= 1) != 0)
version++;
} else if (RDS_PROTOCOL_COMPAT_VERSION ==
RDS_PROTOCOL(major, minor)) {
version = RDS_PROTOCOL_COMPAT_VERSION;
} else {
if (isv6)
printk_ratelimited(KERN_NOTICE "RDS: Connection from %pI6c using incompatible protocol version %u.%u\n",
@ -861,7 +866,7 @@ int rds_ib_cm_initiate_connect(struct rdma_cm_id *cm_id, bool isv6)
/* If the peer doesn't do protocol negotiation, we must
* default to RDSv3.0 */
rds_ib_set_protocol(conn, RDS_PROTOCOL_3_0);
rds_ib_set_protocol(conn, RDS_PROTOCOL_VERSION);
ic->i_flowctl = rds_ib_sysctl_flow_control; /* advertise flow control */
ret = rds_ib_setup_qp(conn);
@ -870,7 +875,8 @@ int rds_ib_cm_initiate_connect(struct rdma_cm_id *cm_id, bool isv6)
goto out;
}
rds_ib_cm_fill_conn_param(conn, &conn_param, &dp, RDS_PROTOCOL_VERSION,
rds_ib_cm_fill_conn_param(conn, &conn_param, &dp,
conn->c_proposed_version,
UINT_MAX, UINT_MAX, isv6);
ret = rdma_connect(cm_id, &conn_param);
if (ret)

4
net/rds/rds.h
View File

@ -19,10 +19,13 @@
*/
#define RDS_PROTOCOL_3_0 0x0300
#define RDS_PROTOCOL_3_1 0x0301
#define RDS_PROTOCOL_4_0 0x0400
#define RDS_PROTOCOL_4_1 0x0401
#define RDS_PROTOCOL_VERSION RDS_PROTOCOL_3_1
#define RDS_PROTOCOL_MAJOR(v) ((v) >> 8)
#define RDS_PROTOCOL_MINOR(v) ((v) & 255)
#define RDS_PROTOCOL(maj, min) (((maj) << 8) | min)
#define RDS_PROTOCOL_COMPAT_VERSION RDS_PROTOCOL_3_1
/* The following ports, 16385, 18634, 18635, are registered with IANA as
* the ports to be used for RDS over TCP and UDP. Currently, only RDS over
@ -151,6 +154,7 @@ struct rds_connection {
struct rds_cong_map *c_fcong;
/* Protocol version */
unsigned int c_proposed_version;
unsigned int c_version;
possible_net_t c_net;

1
net/rds/threads.c
View File

@ -93,6 +93,7 @@ void rds_connect_path_complete(struct rds_conn_path *cp, int curr)
queue_delayed_work(rds_wq, &cp->cp_recv_w, 0);
}
rcu_read_unlock();
cp->cp_conn->c_proposed_version = RDS_PROTOCOL_VERSION;
}
EXPORT_SYMBOL_GPL(rds_connect_path_complete);