On 7/24/2015 10:14 PM, Jason Gunthorpe wrote:
On Fri, Jul 24, 2015 at 01:40:17PM -0500, Steve Wise wrote:
Huh. How does this relate to the max_page_list_len argument:
struct ib_mr *ib_alloc_fast_reg_mr(struct ib_pd *pd, int max_page_list_len)
Shouldn't max_fast_reg_page_list_len be checked during the above?
Ie does this still make sense:
drivers/infiniband/ulp/iser/iser_verbs.c: desc->data_mr = ib_alloc_fast_reg_mr(pd, ISCSI_ISER_SG_TABLESIZE + 1);
?
The only ULP that checks this is SRP, so basically, all our ULPs are
probably quietly broken? cxgb3 has a limit of 10 (!?!?!!)
Yea seems like some drivers need to enforce this in ib_alloc_fast_reg_mr() as well as ib_alloc_fast_reg_page_list(), and ULPs need
to not exceed the device max.
Great, Sagi, can you incorporate that in your series so that
ib_alloc_mr's max_entires is checked against
max_fast_reg_page_list_len and EINVAL's if it is too great?
Yes. I'll take care of that.
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