From: Ralph Campbell Date: Fri, 5 Dec 2008 19:13:18 +0000 (-0800) Subject: IB/ipath: Fix PSN of send WQEs after an RDMA read resend X-Git-Tag: v2.6.29-rc1~583^2^3~5 X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=fab01fc56063dafcc083f481ac0f9e6b5a576dd6;p=linux-2.6-omap-h63xx.git IB/ipath: Fix PSN of send WQEs after an RDMA read resend The PSN of the first packet after an RDMA read is based on the size of the RDMA read request. This is calculated correctly for the WQE sent after the first request message but not on subsequent requests if the RDMA read is resent. Signed-off-by: Ralph Campbell Signed-off-by: Roland Dreier --- diff --git a/drivers/infiniband/hw/ipath/ipath_rc.c b/drivers/infiniband/hw/ipath/ipath_rc.c index 7b93cda1a4b..9170710b950 100644 --- a/drivers/infiniband/hw/ipath/ipath_rc.c +++ b/drivers/infiniband/hw/ipath/ipath_rc.c @@ -573,9 +573,8 @@ int ipath_make_rc_req(struct ipath_qp *qp) ohdr->u.rc.reth.length = cpu_to_be32(qp->s_len); qp->s_state = OP(RDMA_READ_REQUEST); hwords += sizeof(ohdr->u.rc.reth) / sizeof(u32); - bth2 = qp->s_psn++ & IPATH_PSN_MASK; - if (ipath_cmp24(qp->s_psn, qp->s_next_psn) > 0) - qp->s_next_psn = qp->s_psn; + bth2 = qp->s_psn & IPATH_PSN_MASK; + qp->s_psn = wqe->lpsn + 1; ss = NULL; len = 0; qp->s_cur++;