On Tue, Oct 05, 2021 at 08:58:09PM -0500, Bob Pearson wrote:

Currently the rdma_rxe driver and its user space provider exchange
addressing information for UD sends by having the provider compute an
address vector (AV) and send it with each WQE. This is not the way
that the RDMA verbs API was intended to operate.

This series of patches modifies the way UD send WQEs work by exchanging
an index identifying the AH replacing the 88 byte AV by a 4 byte AH
index. In order to not break compatibility with the existing API the
rdma_rxe driver will recognise when an older version of the provider
is not sending an index (i.e. it is 0) and will use the AV instead.

This series of patches is identical to the previous version
but rebased to 5.15.0-rc2+. It applies cleanly to

    commit: d30ef6d5c013c19e907f2a3a3d6eee04fcd3de0d (for-next)

v5:
  Rebase to 5.15.0-rc2+

This is not the right base, I said you needed something path Rao's
patch like current rdma for-next since it gets conflicts:

Applying: RDMA/rxe: Move AV from rxe_send_wqe to rxe_send_wr
Applying: RDMA/rxe: Change AH objects to indexed
Using index info to reconstruct a base tree...
M	drivers/infiniband/sw/rxe/rxe_param.h
Falling back to patching base and 3-way merge...
Auto-merging drivers/infiniband/sw/rxe/rxe_param.h
CONFLICT (content): Merge conflict in drivers/infiniband/sw/rxe/rxe_param.h
error: Failed to merge in the changes.
Patch failed at 0002 RDMA/rxe: Change AH objects to indexed
hint: Use 'git am --show-current-patch=diff' to see the failed patch
When you have resolved this problem, run "git am --continue".
If you prefer to skip this patch, run "git am --skip" instead.
To restore the original branch and stop patching, run "git am --abort".

Try again

Jason