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rds: add transport specific tos_map hook

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RDMA transport maps user tos to underline virtual lanes(VL)
for IB or DSCP values. RDMA CM transport abstract thats for
RDS. TCP transport makes use of default priority 0 and maps
all user tos values to it.

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 21:36:49 +08:00
parent 3eb450367d
commit 56dc8bce9f
4 changed files with 24 additions and 4 deletions
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7
net/rds/tcp.c
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@@ -453,6 +453,12 @@ static void rds_tcp_destroy_conns(void)
static void rds_tcp_exit(void);
static u8 rds_tcp_get_tos_map(u8 tos)
{
/* all user tos mapped to default 0 for TCP transport */
return 0;
}
struct rds_transport rds_tcp_transport = {
.laddr_check = rds_tcp_laddr_check,
.xmit_path_prepare = rds_tcp_xmit_path_prepare,
@@ -467,6 +473,7 @@ struct rds_transport rds_tcp_transport = {
.inc_free = rds_tcp_inc_free,
.stats_info_copy = rds_tcp_stats_info_copy,
.exit = rds_tcp_exit,
.get_tos_map = rds_tcp_get_tos_map,
.t_owner = THIS_MODULE,
.t_name = "tcp",
.t_type = RDS_TRANS_TCP,