[PATCH] nvme-rdma: fix in-casule data send for chained sgls

[Sagi Grimberg]

> On 2021/5/28 4:40, Sagi Grimberg wrote:
>> We have only 2 inline sg entries and we allow 4 sg entries for the send
>> wr sge. Larger sgls entries will be chained. However when we build
>> in-capsule send wr sge, we iterate without taking into account that the
>> sgl may be chained and still fit in-capsule (which can happen if the sgl
>> is bigger than 2, but lower-equal to 4).
>>
>> Fix in-capsule data mapping to correctly iterate chained sgls.
>>
>> Reported-by: Walker, Benjamin <benjamin.walker at intel.com>
>> Signed-off-by: Sagi Grimberg <sagi at grimberg.me>
>> ---
>>   drivers/nvme/host/rdma.c | 4 ++--
>>   1 file changed, 2 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/nvme/host/rdma.c b/drivers/nvme/host/rdma.c
>> index 8d107b201f16..ed1bf214c544 100644
>> --- a/drivers/nvme/host/rdma.c
>> +++ b/drivers/nvme/host/rdma.c
>> @@ -1320,16 +1320,16 @@ static int nvme_rdma_map_sg_inline(struct 
>> nvme_rdma_queue *queue,
>>           int count)
>>   {
>>       struct nvme_sgl_desc *sg = &c->common.dptr.sgl;
>> -    struct scatterlist *sgl = req->data_sgl.sg_table.sgl;
> sgl need to be defined.

Obviously, rushed it...