diff options
| author | Or Gerlitz <ogerlitz@mellanox.com> | 2011-12-11 16:40:05 +0200 |
|---|---|---|
| committer | Roland Dreier <roland@purestorage.com> | 2012-01-03 21:00:02 -0800 |
| commit | 9106c410697427363517ca6b4f463698aebc5f25 (patch) | |
| tree | ddf079aeac48c40b479bb782f7e3de49153fca03 /drivers/net | |
| parent | 5f0a6e2d503896062f641639dacfe5055c2f593b (diff) | |
IB/mlx4: Fix SL to 802.1Q priority-bits mapping for IBoE
For IBoE, SLs 0-7 are mapped to Ethernet 802.1Q user priority bits
(pbits) which are part of the VLAN tag, SLs 8-15 are reserved.
Under Ethernet, the ConnectX firmware treats (decode/encode) the four
bit SL field in various constructs such as QPC / UD WQE / CQE as PPP0
and not as 0PPP. This correlates well to the fact that within the
vlan tag the pbits are located in bits 15-13 and not 12-14.
The current code wasn't consistent around that area - the
encoding was correct for the IBoE QPC.path.schedule_queue field,
but was wrong for IBoE CQEs and when MLX header was built.
These inconsistencies resulted in wrong SL <--> wire 802.1Q pbits
mapping, which is fixed by using SL <--> PPP0 all around the place.
Signed-off-by: Oren Duer <oren@mellanox.co.il>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Diffstat (limited to 'drivers/net')
0 files changed, 0 insertions, 0 deletions