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RDMA/hns: Adjust lp_pktn_ini dynamically

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lp_pktn_ini means the number of loopback slice packets for long messages,
it should depend on MTU(fixed to 4096B currently) and max size of SQ
inline.

Link: https://lore.kernel.org/r/1588242691-12913-3-git-send-email-liweihang@huawei.com
Signed-off-by: Weihang Li <liweihang@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Weihang Li 2020-04-30 18:31:30 +08:00 committed by Jason Gunthorpe
parent 23190b8f47
commit b713128de7
1 changed files with 2 additions and 1 deletions
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3
drivers/infiniband/hw/hns/hns_roce_hw_v2.c
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@ -3977,7 +3977,8 @@ static int modify_qp_init_to_rtr(struct ib_qp *ibqp,
/* mtu*(2^LP_PKTN_INI) should not bigger than 1 message length 64kb */
roce_set_field(context->byte_56_dqpn_err, V2_QPC_BYTE_56_LP_PKTN_INI_M,
V2_QPC_BYTE_56_LP_PKTN_INI_S, 0);
V2_QPC_BYTE_56_LP_PKTN_INI_S,
ilog2(hr_dev->caps.max_sq_inline / IB_MTU_4096));
roce_set_field(qpc_mask->byte_56_dqpn_err, V2_QPC_BYTE_56_LP_PKTN_INI_M,
V2_QPC_BYTE_56_LP_PKTN_INI_S, 0);