RDMA/rxe: Fix incorrect responder length checking

The code in rxe_resp.c at check_length() is incorrect as it compares
pkt->opcode an 8 bit value against various mask bits which are all higher
than 256 so nothing is ever reported.

This patch rewrites this to compare against pkt->mask which is
correct. However this now exposes another error. For UD send packets the
value of the pmtu cannot be determined from qp->mtu.  All that is required
here is to later check if the payload fits into the posted receive buffer
in that case.

Fixes: 837a55847ead ("RDMA/rxe: Implement packet length validation on responder")
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Bob Pearson <[email protected]>
Reviewed-by: Daisuke Matsuda <[email protected]>
Signed-off-by: Jason Gunthorpe <[email protected]>

0 files changed, 0 insertions, 0 deletions