[PATCH 2.6.37 05/11] RDMA/cxgb4: Handle CPL_RDMA_TERMINATE messages.

Steve Wise
2010-09-10T16:15:09Z

T4 FW sends up CPL_RDMA_TERMINATE to indicate a peer TERM. This triggers
the QP moving to TERMINATE state.

Signed-off-by: Steve Wise <swise-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org>
---

drivers/infiniband/hw/cxgb4/cm.c | 25 +++++++++++++------------
drivers/infiniband/hw/cxgb4/ev.c | 2 +-
drivers/infiniband/hw/cxgb4/qp.c | 3 ++-
3 files changed, 16 insertions(+), 14 deletions(-)

diff --git a/drivers/infiniband/hw/cxgb4/cm.c b/drivers/infiniband/hw/cxgb4/cm.c
index d548167..0227c13 100644
--- a/drivers/infiniband/hw/cxgb4/cm.c
+++ b/drivers/infiniband/hw/cxgb4/cm.c
@@ -1725,23 +1725,24 @@ static int close_con_rpl(struct c4iw_dev *dev, struct sk_buff *skb)

static int terminate(struct c4iw_dev *dev, struct sk_buff *skb)
{
- struct c4iw_ep *ep;
- struct cpl_rdma_terminate *term = cplhdr(skb);
+ struct cpl_rdma_terminate *rpl = cplhdr(skb);
struct tid_info *t = dev->rdev.lldi.tids;
- unsigned int tid = GET_TID(term);
+ unsigned int tid = GET_TID(rpl);
+ struct c4iw_ep *ep;
+ struct c4iw_qp_attributes attrs;

ep = lookup_tid(t, tid);
+ BUG_ON(!ep);

- if (state_read(&ep->com) != FPDU_MODE)
- return 0;
+ if (ep->com.qp) {
+ printk(KERN_WARNING MOD "TERM received tid %u qpid %u\n", tid,
+ ep->com.qp->wq.sq.qid);
+ attrs.next_state = C4IW_QP_STATE_TERMINATE;
+ c4iw_modify_qp(ep->com.qp->rhp, ep->com.qp,
+ C4IW_QP_ATTR_NEXT_STATE, &attrs, 1);
+ } else
+ printk(KERN_WARNING MOD "TERM received tid %u no qp\n", tid);

- PDBG("%s ep %p tid %u\n", __func__, ep, ep->hwtid);
- skb_pull(skb, sizeof *term);
- PDBG("%s saving %d bytes of term msg\n", __func__, skb->len);
- skb_copy_from_linear_data(skb, ep->com.qp->attr.terminate_buffer,
- skb->len);
- ep->com.qp->attr.terminate_msg_len = skb->len;
- ep->com.qp->attr.is_terminate_local = 0;
return 0;
}

diff --git a/drivers/infiniband/hw/cxgb4/ev.c b/drivers/infiniband/hw/cxgb4/ev.c
index 491e76a..c13041a 100644
--- a/drivers/infiniband/hw/cxgb4/ev.c
+++ b/drivers/infiniband/hw/cxgb4/ev.c
@@ -60,7 +60,7 @@ static void post_qp_event(struct c4iw_dev *dev, struct c4iw_cq *chp,
if (qhp->attr.state == C4IW_QP_STATE_RTS) {
attrs.next_state = C4IW_QP_STATE_TERMINATE;
c4iw_modify_qp(qhp->rhp, qhp, C4IW_QP_ATTR_NEXT_STATE,
- &attrs, 1);
+ &attrs, 0);
}

event.event = ib_event;
diff --git a/drivers/infiniband/hw/cxgb4/qp.c b/drivers/infiniband/hw/cxgb4/qp.c
index c92259f..7756d44 100644
--- a/drivers/infiniband/hw/cxgb4/qp.c
+++ b/drivers/infiniband/hw/cxgb4/qp.c
@@ -1238,7 +1238,8 @@ int c4iw_modify_qp(struct c4iw_dev *rhp, struct c4iw_qp *qhp,
t4_set_wq_in_error(&qhp->wq);
ep = qhp->ep;
c4iw_get_ep(&ep->com);
- terminate = 1;
+ if (!internal)
+ terminate = 1;
disconnect = 1;
break;
case C4IW_QP_STATE_ERROR: