I applied this, but I'm wondering if this:
> +int ipath_resize_cq(struct ibv_cq *ibcq, int cqe)
> {
> + struct ipath_cq *cq = to_icq(ibcq);
> + struct ibv_resize_cq cmd;
> + struct ipath_resize_cq_resp resp;
> + size_t size;
> + int ret;
> +
> + pthread_spin_lock(&cq->lock);
> + /* Save the old size so we can unmmap the queue. */
> + size = sizeof(struct ipath_cq_wc) +
> + (sizeof(struct ipath_wc) * cq->ibv_cq.cqe);
> + ret = ibv_cmd_resize_cq(ibcq, cqe, &cmd, sizeof cmd,
> + &resp.ibv_resp, sizeof resp);
> + if (ret) {
> + pthread_spin_unlock(&cq->lock);
> + return ret;
> + }
> + (void) munmap(cq->queue, size);
> + size = sizeof(struct ipath_cq_wc) +
> + (sizeof(struct ipath_wc) * cq->ibv_cq.cqe);
> + cq->queue = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED,
> + ibcq->context->cmd_fd, resp.offset);
> + ret = errno;
> + pthread_spin_unlock(&cq->lock);
> + if ((void *) cq->queue == MAP_FAILED)
> + return ret;
> + return 0;
> +}
works against an old kernel driver. It seems you do have this:
> + if (dev->abi_version == 1) {
> + context->ibv_ctx.ops.poll_cq = ibv_cmd_poll_cq;
> + context->ibv_ctx.ops.post_srq_recv = ibv_cmd_post_srq_recv;
> + context->ibv_ctx.ops.post_recv = ibv_cmd_post_recv;
> + }
so I guess you're just ignoring the failure of mmap() or something?
- R.
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