diff options
| author | Shirley Ma <mashirle@us.ibm.com> | 2008-04-23 14:55:45 -0400 |
|---|---|---|
| committer | Roland Dreier <rolandd@cisco.com> | 2008-04-23 14:55:45 -0400 |
| commit | bc7b3a36ba02e4053ca38653e6a753082d9add03 (patch) | |
| tree | 28fe1daa7cab6c7cab71bbc7af22ee6ca7746323 /drivers/infiniband/ulp/ipoib/ipoib_multicast.c | |
| parent | bc5698f3ecc9587e1edb343a2878f8d228c49e0e (diff) | |
IPoIB: Handle 4K IB MTU for UD (datagram) mode
This patch enables IPoIB to use 4K UD messages (when the underlying
device and fabrics support a 4K MTU) by using two scatter buffers when
PAGE_SIZE is less than or equal to thhe HCA IB MTU size. The first
buffer is for IPoIB header + GRH header, and the second buffer is the
IPoIB payload, which is 4K-4.
Signed-off-by: Shirley Ma <xma@us.ibm.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/infiniband/ulp/ipoib/ipoib_multicast.c')
| -rw-r--r-- | drivers/infiniband/ulp/ipoib/ipoib_multicast.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_multicast.c b/drivers/infiniband/ulp/ipoib/ipoib_multicast.c index 31a53c5bcb13..d00a2c174aee 100644 --- a/drivers/infiniband/ulp/ipoib/ipoib_multicast.c +++ b/drivers/infiniband/ulp/ipoib/ipoib_multicast.c | |||
| @@ -567,8 +567,7 @@ void ipoib_mcast_join_task(struct work_struct *work) | |||
| 567 | return; | 567 | return; |
| 568 | } | 568 | } |
| 569 | 569 | ||
| 570 | priv->mcast_mtu = ib_mtu_enum_to_int(priv->broadcast->mcmember.mtu) - | 570 | priv->mcast_mtu = IPOIB_UD_MTU(ib_mtu_enum_to_int(priv->broadcast->mcmember.mtu)); |
| 571 | IPOIB_ENCAP_LEN; | ||
| 572 | 571 | ||
| 573 | if (!ipoib_cm_admin_enabled(dev)) | 572 | if (!ipoib_cm_admin_enabled(dev)) |
| 574 | dev->mtu = min(priv->mcast_mtu, priv->admin_mtu); | 573 | dev->mtu = min(priv->mcast_mtu, priv->admin_mtu); |