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[PATCH] IB: Keep MAD work completion valid

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Replace the *wc field in ib_mad_recv_wc from pointing to a structure on the
stack to one allocated with the received MAD buffer.  This allows a client to
access the *wc field after their receive completion handler has returned.

Signed-off-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Sean Hefty 2005-04-16 15:26:08 -07:00 committed by Linus Torvalds
parent b1ed8dab94
commit 24239aff4e
2 changed files with 3 additions and 1 deletions
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3
drivers/infiniband/core/mad.c
View file

@ -1600,7 +1600,8 @@ static void ib_mad_recv_done_handler(struct ib_mad_port_private *port_priv,
DMA_FROM_DEVICE); DMA_FROM_DEVICE);
/* Setup MAD receive work completion from "normal" work completion */ /* Setup MAD receive work completion from "normal" work completion */
recv->header.recv_wc.wc = wc; recv->header.wc = *wc;
recv->header.recv_wc.wc = &recv->header.wc;
recv->header.recv_wc.mad_len = sizeof(struct ib_mad); recv->header.recv_wc.mad_len = sizeof(struct ib_mad);
recv->header.recv_wc.recv_buf.mad = &recv->mad.mad; recv->header.recv_wc.recv_buf.mad = &recv->mad.mad;
recv->header.recv_wc.recv_buf.grh = &recv->grh; recv->header.recv_wc.recv_buf.grh = &recv->grh;

1
drivers/infiniband/core/mad_priv.h
View file

@ -69,6 +69,7 @@ struct ib_mad_list_head {
struct ib_mad_private_header { struct ib_mad_private_header {
struct ib_mad_list_head mad_list; struct ib_mad_list_head mad_list;
struct ib_mad_recv_wc recv_wc; struct ib_mad_recv_wc recv_wc;
struct ib_wc wc;
DECLARE_PCI_UNMAP_ADDR(mapping) DECLARE_PCI_UNMAP_ADDR(mapping)
} __attribute__ ((packed)); } __attribute__ ((packed));