static void
fmr_op_release_mr(struct rpcrdma_mw *r)
{
LIST_HEAD(unmap_list);
int rc;
/* Ensure MW is not on any rl_registered list */
if (!list_empty(&r->mw_list))
list_del(&r->mw_list);
kfree(r->fmr.fm_physaddrs);
kfree(r->mw_sg);
/* In case this one was left mapped, try to unmap it
* to prevent dealloc_fmr from failing with EBUSY
*/
rc = __fmr_unmap(r);
if (rc)
pr_err("rpcrdma: final ib_unmap_fmr for %p failed %i\n",
r, rc);
rc = ib_dealloc_fmr(r->fmr.fm_mr);
if (rc)
pr_err("rpcrdma: final ib_dealloc_fmr for %p returned %i\n",
r, rc);
kfree(r);
}
/*
* Unregister and destroy buffer memory. Need to deal with
* partial initialization, so it's callable from failed create.
* Must be called before destroying endpoint, as registrations
* reference it.
*/
void
rpcrdma_buffer_destroy(struct rpcrdma_buffer *buf)
{
int rc, i;
struct rpcrdma_ia *ia = rdmab_to_ia(buf);
/* clean up in reverse order from create
* 1. recv mr memory (mr free, then kfree)
* 1a. bind mw memory
* 2. send mr memory (mr free, then kfree)
* 3. padding (if any) [moved to rpcrdma_ep_destroy]
* 4. arrays
*/
dprintk("RPC: %s: entering\n", __func__);
for (i = 0; i < buf->rb_max_requests; i++) {
if (buf->rb_recv_bufs && buf->rb_recv_bufs[i]) {
rpcrdma_deregister_internal(ia,
buf->rb_recv_bufs[i]->rr_handle,
&buf->rb_recv_bufs[i]->rr_iov);
kfree(buf->rb_recv_bufs[i]);
}
if (buf->rb_send_bufs && buf->rb_send_bufs[i]) {
while (!list_empty(&buf->rb_mws)) {
struct rpcrdma_mw *r;
r = list_entry(buf->rb_mws.next,
struct rpcrdma_mw, mw_list);
list_del(&r->mw_list);
switch (ia->ri_memreg_strategy) {
case RPCRDMA_MTHCAFMR:
rc = ib_dealloc_fmr(r->r.fmr);
if (rc)
dprintk("RPC: %s:"
" ib_dealloc_fmr"
" failed %i\n",
__func__, rc);
break;
case RPCRDMA_MEMWINDOWS_ASYNC:
case RPCRDMA_MEMWINDOWS:
rc = ib_dealloc_mw(r->r.mw);
if (rc)
dprintk("RPC: %s:"
" ib_dealloc_mw"
" failed %i\n",
__func__, rc);
break;
default:
break;
}
}
rpcrdma_deregister_internal(ia,
buf->rb_send_bufs[i]->rl_handle,
&buf->rb_send_bufs[i]->rl_iov);
kfree(buf->rb_send_bufs[i]);
}
}
kfree(buf->rb_pool);
}
struct rds_ib_mr *rds_ib_alloc_fmr(struct rds_ib_device *rds_ibdev, int npages)
{
struct rds_ib_mr_pool *pool;
struct rds_ib_mr *ibmr = NULL;
struct rds_ib_fmr *fmr;
int err = 0;
if (npages <= RDS_MR_8K_MSG_SIZE)
pool = rds_ibdev->mr_8k_pool;
else
pool = rds_ibdev->mr_1m_pool;
ibmr = rds_ib_try_reuse_ibmr(pool);
if (ibmr)
return ibmr;
ibmr = kzalloc_node(sizeof(*ibmr), GFP_KERNEL,
rdsibdev_to_node(rds_ibdev));
if (!ibmr) {
err = -ENOMEM;
goto out_no_cigar;
}
fmr = &ibmr->u.fmr;
fmr->fmr = ib_alloc_fmr(rds_ibdev->pd,
(IB_ACCESS_LOCAL_WRITE |
IB_ACCESS_REMOTE_READ |
IB_ACCESS_REMOTE_WRITE |
IB_ACCESS_REMOTE_ATOMIC),
&pool->fmr_attr);
if (IS_ERR(fmr->fmr)) {
err = PTR_ERR(fmr->fmr);
fmr->fmr = NULL;
pr_warn("RDS/IB: %s failed (err=%d)\n", __func__, err);
goto out_no_cigar;
}
ibmr->pool = pool;
if (pool->pool_type == RDS_IB_MR_8K_POOL)
rds_ib_stats_inc(s_ib_rdma_mr_8k_alloc);
else
rds_ib_stats_inc(s_ib_rdma_mr_1m_alloc);
return ibmr;
out_no_cigar:
if (ibmr) {
if (fmr->fmr)
ib_dealloc_fmr(fmr->fmr);
kfree(ibmr);
}
atomic_dec(&pool->item_count);
return ERR_PTR(err);
}
static void
fmr_op_destroy(struct rpcrdma_buffer *buf)
{
struct rpcrdma_mw *r;
int rc;
while (!list_empty(&buf->rb_all)) {
r = list_entry(buf->rb_all.next, struct rpcrdma_mw, mw_all);
list_del(&r->mw_all);
kfree(r->r.fmr.physaddrs);
rc = ib_dealloc_fmr(r->r.fmr.fmr);
if (rc)
dprintk("RPC: %s: ib_dealloc_fmr failed %i\n",
__func__, rc);
kfree(r);
}
}
