diff options
Diffstat (limited to 'drivers/infiniband/sw/rxe')
| -rw-r--r-- | drivers/infiniband/sw/rxe/rxe_resp.c | 34 |
1 files changed, 27 insertions, 7 deletions
diff --git a/drivers/infiniband/sw/rxe/rxe_resp.c b/drivers/infiniband/sw/rxe/rxe_resp.c index c32bc12cc82f..382d2053db43 100644 --- a/drivers/infiniband/sw/rxe/rxe_resp.c +++ b/drivers/infiniband/sw/rxe/rxe_resp.c @@ -393,16 +393,36 @@ static enum resp_states check_resource(struct rxe_qp *qp, static enum resp_states check_length(struct rxe_qp *qp, struct rxe_pkt_info *pkt) { - switch (qp_type(qp)) { - case IB_QPT_RC: - return RESPST_CHK_RKEY; + int mtu = qp->mtu; + u32 payload = payload_size(pkt); + u32 dmalen = reth_len(pkt); - case IB_QPT_UC: - return RESPST_CHK_RKEY; + /* RoCEv2 packets do not have LRH. + * Let's skip checking it. + */ - default: - return RESPST_CHK_RKEY; + if ((pkt->opcode & RXE_START_MASK) && + (pkt->opcode & RXE_END_MASK)) { + /* "only" packets */ + if (payload > mtu) + return RESPST_ERR_LENGTH; + } else if ((pkt->opcode & RXE_START_MASK) || + (pkt->opcode & RXE_MIDDLE_MASK)) { + /* "first" or "middle" packets */ + if (payload != mtu) + return RESPST_ERR_LENGTH; + } else if (pkt->opcode & RXE_END_MASK) { + /* "last" packets */ + if ((payload == 0) || (payload > mtu)) + return RESPST_ERR_LENGTH; + } + + if (pkt->opcode & (RXE_WRITE_MASK | RXE_READ_MASK)) { + if (dmalen > (1 << 31)) + return RESPST_ERR_LENGTH; } + + return RESPST_CHK_RKEY; } static enum resp_states check_rkey(struct rxe_qp *qp, |