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nicira-ext: Clarify behavior of overlapping src and dst for NXAST_REG_MOVE.

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Reported-by: Pankaj Thakkar <thakkar@nicira.com>
Signed-off-by: Ben Pfaff <blp@nicira.com>
This commit is contained in:
Ben Pfaff
2012-10-16 11:01:27 -07:00
parent 8e61c1104e
commit a478fee3aa
1 changed files with 4 additions and 0 deletions
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4
include/openflow/nicira-ext.h
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@@ -502,6 +502,10 @@ OFP_ASSERT(sizeof(struct nx_action_pop_queue) == 16);
* The switch will reject actions for which src_ofs+n_bits is greater than the * The switch will reject actions for which src_ofs+n_bits is greater than the
* width of 'src' or dst_ofs+n_bits is greater than the width of 'dst' with * width of 'src' or dst_ofs+n_bits is greater than the width of 'dst' with
* error type OFPET_BAD_ACTION, code OFPBAC_BAD_ARGUMENT. * error type OFPET_BAD_ACTION, code OFPBAC_BAD_ARGUMENT.
*
* This action behaves properly when 'src' overlaps with 'dst', that is, it
* behaves as if 'src' were copied out to a temporary buffer, then the
* temporary buffer copied to 'dst'.
*/ */
struct nx_action_reg_move { struct nx_action_reg_move {
ovs_be16 type; /* OFPAT_VENDOR. */ ovs_be16 type; /* OFPAT_VENDOR. */