diff options
| author | Santosh Shilimkar <santosh.shilimkar@oracle.com> | 2018-10-13 21:36:49 +0800 |
|---|---|---|
| committer | Santosh Shilimkar <santosh.shilimkar@oracle.com> | 2019-02-04 14:59:13 -0800 |
| commit | 56dc8bce9f761cf61258e25d96dec4072273d8db (patch) | |
| tree | 99e56197db9d11e8aa3b02d8e354cbadf9843410 /net/rds/af_rds.c | |
| parent | 3eb450367d0823226515ee24712ed08eccb33eb9 (diff) | |
| download | lwn-56dc8bce9f761cf61258e25d96dec4072273d8db.tar.gz lwn-56dc8bce9f761cf61258e25d96dec4072273d8db.zip | |
rds: add transport specific tos_map hook
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>
Diffstat (limited to 'net/rds/af_rds.c')
| -rw-r--r-- | net/rds/af_rds.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/net/rds/af_rds.c b/net/rds/af_rds.c index 904515858037..d6cc97fbbbb0 100644 --- a/net/rds/af_rds.c +++ b/net/rds/af_rds.c @@ -255,16 +255,18 @@ static __poll_t rds_poll(struct file *file, struct socket *sock, static int rds_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) { struct rds_sock *rs = rds_sk_to_rs(sock->sk); - rds_tos_t tos; + rds_tos_t utos, tos = 0; switch (cmd) { case SIOCRDSSETTOS: - if (get_user(tos, (rds_tos_t __user *)arg)) + if (get_user(utos, (rds_tos_t __user *)arg)) return -EFAULT; if (rs->rs_transport && - rs->rs_transport->t_type == RDS_TRANS_TCP) - tos = 0; + rs->rs_transport->get_tos_map) + tos = rs->rs_transport->get_tos_map(utos); + else + return -ENOIOCTLCMD; spin_lock_bh(&rds_sock_lock); if (rs->rs_tos || rs->rs_conn) { |