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RDMA/irdma: Process extended CQ entries correctly

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The valid bit for extended CQE's written by HW is retrieved from the
incorrect quad-word. This leads to missed completions for any UD traffic
particularly after a wrap-around.

Get the valid bit for extended CQE's from the correct quad-word in the
descriptor.

Fixes: 551c46edc7 ("RDMA/irdma: Add user/kernel shared libraries")
Link: https://lore.kernel.org/r/20211005182302.374-1-shiraz.saleem@intel.com
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
This commit is contained in:
Shiraz Saleem
2021-10-05 13:23:02 -05:00
committed by Jason Gunthorpe
parent 9e1ff307c7
commit e93c7d8e8c
1 changed files with 2 additions and 2 deletions
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4
drivers/infiniband/hw/irdma/uk.c
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@@ -1092,12 +1092,12 @@ irdma_uk_cq_poll_cmpl(struct irdma_cq_uk *cq, struct irdma_cq_poll_info *info)
if (cq->avoid_mem_cflct) {
ext_cqe = (__le64 *)((u8 *)cqe + 32);
get_64bit_val(ext_cqe, 24, &qword7);
polarity = (u8)FIELD_GET(IRDMA_CQ_VALID, qword3);
polarity = (u8)FIELD_GET(IRDMA_CQ_VALID, qword7);
} else {
peek_head = (cq->cq_ring.head + 1) % cq->cq_ring.size;
ext_cqe = cq->cq_base[peek_head].buf;
get_64bit_val(ext_cqe, 24, &qword7);
polarity = (u8)FIELD_GET(IRDMA_CQ_VALID, qword3);
polarity = (u8)FIELD_GET(IRDMA_CQ_VALID, qword7);
if (!peek_head)
polarity ^= 1;
}