redonkable/alistair23-linux
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IB/ipath: Check reserved memory keys

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Don't let userspace use the direct-physical-map L_key or R_key.

Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Robert Walsh 2007-03-15 14:45:14 -07:00 committed by Roland Dreier
parent f0810daf74
commit 253fb39020
1 changed files with 12 additions and 0 deletions
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12
drivers/infiniband/hw/ipath/ipath_keys.c
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@ -133,6 +133,12 @@ int ipath_lkey_ok(struct ipath_qp *qp, struct ipath_sge *isge,
* being reversible by calling bus_to_virt().
*/
if (sge->lkey == 0) {
struct ipath_pd *pd = to_ipd(qp->ibqp.pd);
if (pd->user) {
ret = 0;
goto bail;
}
isge->mr = NULL;
isge->vaddr = (void *) sge->addr;
isge->length = sge->length;
@ -206,6 +212,12 @@ int ipath_rkey_ok(struct ipath_qp *qp, struct ipath_sge_state *ss,
* (see ipath_get_dma_mr and ipath_dma.c).
*/
if (rkey == 0) {
struct ipath_pd *pd = to_ipd(qp->ibqp.pd);
if (pd->user) {
ret = 0;
goto bail;
}
sge->mr = NULL;
sge->vaddr = (void *) vaddr;
sge->length = len;