user/sven/linux.git/include/rdma/ib_pack.h, branch v4.15

IB/core: Fix calculation of maximum RoCE MTU

2017-10-18T16:11:36Z

The original code only took into consideration the largest header possible after the IB_BTH_BYTES. This was incorrect, as the largest possible header size is the largest possible combination of headers we might run into. The new code accounts for all possible headers in the largest possible combination and subtracts that from the MTU to make sure that all packets will fit on the wire. Link: https://www.spinics.net/lists/linux-rdma/msg54558.html Fixes: 3c86aa70bf67 ("RDMA/cm: Add RDMA CM support for IBoE devices") Signed-off-by: Parav Pandit Reviewed-by: Daniel Jurgens Reported-by: Roland Dreier Signed-off-by: Leon Romanovsky Signed-off-by: Doug Ledford

IB/hfi1: Add transmit fault injection feature

2017-04-05T18:45:09Z

Add ability to fault packets on transmit by opcode. Dropping by packet can be achieved by setting the mask to 0. In order to drop non-verbs traffic we set PbcInsertHrc to NONE (0x2). The packet will still be delivered to the receiving node but a KHdrHCRCErr (KDETH packet with a bad HCRC) will be triggered and the packet will not be delivered to the correct context. In order to drop regular verbs traffic we set the PbcTestEbp flag. The packet will still be delivered to the receiving node but a 'late ebp error' will be triggered and will be dropped. A global toggle (/sys/kernel/debug/hfi1/hfi1_X/fault_suppress_err) has been added to suppress the error messages on the receive node when a packet was faulted on the sending node. Reviewed-by: Dennis Dalessandro Signed-off-by: Mike Marciniszyn Signed-off-by: Don Hiatt Signed-off-by: Dennis Dalessandro Signed-off-by: Doug Ledford

ib_pack.h: Add opcode definition for send with invalidate

2016-05-13T23:39:19Z

The opcode for "SEND Last with Invalidate" and "SEND Only with Invalidate" have been defined for RC in IBA Specification Vol 1 since Release 1.2. Add the definition to the header file in preparation of supporting these opcodes in rdmavt based drivers. Reviewed-by: Mike Marciniszyn Signed-off-by: Jianxin Xiong Signed-off-by: Doug Ledford

IB/mlx4: Enable send of RoCE QP1 packets with IP/UDP headers

2016-01-19T20:35:01Z

RoCEv2 packets are sent over IP/UDP protocols. The mlx4 driver uses a type of RAW QP to send packets for QP1 and therefore needs to build the network headers below BTH in software. This patch adds option to build QP1 packets with IP and UDP headers if RoCEv2 is requested. Signed-off-by: Moni Shoua Signed-off-by: Doug Ledford

IB/core: Initialize UD header structure with IP and UDP headers

2015-12-23T15:39:53Z

ib_ud_header_init() is used to format InfiniBand headers in a buffer up to (but not with) BTH. For RoCE UDP ENCAP it is required that this function would be able to build also IP and UDP headers. Signed-off-by: Moni Shoua Signed-off-by: Matan Barak Signed-off-by: Doug Ledford

ib_pack.h: Fix commentary IBA reference for CNP in IB opcode enum

2015-10-21T20:41:54Z

IBA spec is now 1.3 not 3.1 and vol 1 should be mentioned as there is also vol 2. Signed-off-by: Hal Rosenstock Signed-off-by: Doug Ledford

IB/core: Add core header changes needed for OPA

2015-08-29T02:54:50Z

This patch adds the value of the CNP opcode to the existing list of enumerated opcodes in ib_pack.h Add common OPA header definitions for driver build: - opa_port_info.h - opa_smi.h - hfi1_user.h Additionally, ib_mad.h, has additional definitions that are common to ib_drivers including: - trap support - cca support The qib driver has the duplication removed in favor those in ib_mad.h Reviewed-by: Mike Marciniszyn Reviewed-by: John, Jubin Signed-off-by: Ira Weiny Signed-off-by: Dennis Dalessandro Signed-off-by: Doug Ledford

IB/core: Ethernet L2 attributes in verbs/cm structures

2014-01-14T22:20:54Z

This patch add the support for Ethernet L2 attributes in the verbs/cm/cma structures. When dealing with L2 Ethernet, we should use smac, dmac, vlan ID and priority in a similar manner that the IB L2 (and the L4 PKEY) attributes are used. Thus, those attributes were added to the following structures: * ib_ah_attr - added dmac * ib_qp_attr - added smac and vlan_id, (sl remains vlan priority) * ib_wc - added smac, vlan_id * ib_sa_path_rec - added smac, dmac, vlan_id * cm_av - added smac and vlan_id For the path record structure, extra care was taken to avoid the new fields when packing it into wire format, so we don't break the IB CM and SA wire protocol. On the active side, the CM fills. its internal structures from the path provided by the ULP. We add there taking the ETH L2 attributes and placing them into the CM Address Handle (struct cm_av). On the passive side, the CM fills its internal structures from the WC associated with the REQ message. We add there taking the ETH L2 attributes from the WC. When the HW driver provides the required ETH L2 attributes in the WC, they set the IB_WC_WITH_SMAC and IB_WC_WITH_VLAN flags. The IB core code checks for the presence of these flags, and in their absence does address resolution from the ib_init_ah_from_wc() helper function. ib_modify_qp_is_ok is also updated to consider the link layer. Some parameters are mandatory for Ethernet link layer, while they are irrelevant for IB. Vendor drivers are modified to support the new function signature. Signed-off-by: Matan Barak Signed-off-by: Or Gerlitz Signed-off-by: Roland Dreier

IB/core: Add VLAN support for IBoE

2010-10-25T17:20:39Z

Add 802.1q VLAN support to IBoE. The VLAN tag is encoded within the GID derived from a link local address in the following way: GID[11] GID[12] contain the VLAN ID when the GID contains a VLAN. The 3 bits user priority field of the packets are identical to the 3 bits of the SL. In case of rdma_cm apps, the TOS field is used to generate the SL field by doing a shift right of 5 bits effectively taking to 3 MS bits of the TOS field. Signed-off-by: Eli Cohen Signed-off-by: Roland Dreier

IB/pack: IBoE UD packet packing support

2010-10-14T19:41:29Z

Add support for packing IBoE packet headers. Signed-off-by: Eli Cohen [ Clean up and fix ib_ud_header_init() a bit. - Roland ] Signed-off-by: Roland Dreier