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RDMA/rxe: Fix extra copy in prepare_ack_packet 

Currently prepare_ack_packet writes almost all the fields of the BTH in
the ack packet twice. Replace code with the subroutine init_bth().

Fixes: 8700e3e7c4 ("Soft RoCE driver")
Link: https://lore.kernel.org/r/20210618045742.204195-6-rpearsonhpe@gmail.com
Signed-off-by: Bob Pearson <rpearsonhpe@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
This commit is contained in:
Bob Pearson 2021-06-17 23:57:42 -05:00 committed by Jason Gunthorpe
parent ec0fa2445c
commit 3896bde92d
1 changed files with 3 additions and 10 deletions
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13
drivers/infiniband/sw/rxe/rxe_resp.c
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@ -637,18 +637,11 @@ static struct sk_buff *prepare_ack_packet(struct rxe_qp *qp,
ack->opcode = opcode; ack->opcode = opcode;
ack->mask = rxe_opcode[opcode].mask; ack->mask = rxe_opcode[opcode].mask;
ack->paylen = paylen; ack->paylen = paylen;
/* fill in bth using the request packet headers */
memcpy(ack->hdr, pkt->hdr, RXE_BTH_BYTES);
bth_set_opcode(ack, opcode);
bth_set_qpn(ack, qp->attr.dest_qp_num);
bth_set_pad(ack, pad);
bth_set_se(ack, 0);
bth_set_psn(ack, psn);
bth_set_ack(ack, 0);
ack->psn = psn; ack->psn = psn;
bth_init(ack, opcode, 0, 0, pad, IB_DEFAULT_PKEY_FULL,
qp->attr.dest_qp_num, 0, psn);
if (ack->mask & RXE_AETH_MASK) { if (ack->mask & RXE_AETH_MASK) {
aeth_set_syn(ack, syndrome); aeth_set_syn(ack, syndrome);
aeth_set_msn(ack, qp->resp.msn); aeth_set_msn(ack, qp->resp.msn);