qed: LL2 flush isles when connection is closed

BugLink: http://bugs.launchpad.net/bugs/1783418
[ Upstream commit f9bcd60274a565751abef622f9018badd01a17c8 ]

Driver should free all pending isles once it gets a FLUSH cqe from FW.
Part of iSCSI out of order flow.

Fixes: 1d6cff4fca4366 ("qed: Add iSCSI out of order packet handling")
Signed-off-by: Ariel Elior <Ariel.Elior@cavium.com>
Signed-off-by: Michal Kalderon <Michal.Kalderon@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Khalid Elmously <khalid.elmously@canonical.com>

diff --git a/drivers/net/ethernet/qlogic/qed/qed_ll2.c b/drivers/net/ethernet/qlogic/qed/qed_ll2.c
index 047f556ca62e7da76045a9e27aea4115ee5d373c..712f2b5895a96a42d2f2aa95f54eed6201b6df10 100644 (file)
--- a/drivers/net/ethernet/qlogic/qed/qed_ll2.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_ll2.c
@@ -598,6 +598,27 @@ static u8 qed_ll2_convert_rx_parse_to_tx_flags(u16 parse_flags)
        return bd_flags;
 }
 
+static bool
+qed_ll2_lb_rxq_handler_slowpath(struct qed_hwfn *p_hwfn,
+                               struct core_rx_slow_path_cqe *p_cqe)
+{
+       struct ooo_opaque *iscsi_ooo;
+       u32 cid;
+
+       if (p_cqe->ramrod_cmd_id != CORE_RAMROD_RX_QUEUE_FLUSH)
+               return false;
+
+       iscsi_ooo = (struct ooo_opaque *)&p_cqe->opaque_data;
+       if (iscsi_ooo->ooo_opcode != TCP_EVENT_DELETE_ISLES)
+               return false;
+
+       /* Need to make a flush */
+       cid = le32_to_cpu(iscsi_ooo->cid);
+       qed_ooo_release_connection_isles(p_hwfn, p_hwfn->p_ooo_info, cid);
+
+       return true;
+}
+
 static int qed_ll2_lb_rxq_handler(struct qed_hwfn *p_hwfn,
                                  struct qed_ll2_info *p_ll2_conn)
 {
@@ -624,6 +645,11 @@ static int qed_ll2_lb_rxq_handler(struct qed_hwfn *p_hwfn,
                cq_old_idx = qed_chain_get_cons_idx(&p_rx->rcq_chain);
                cqe_type = cqe->rx_cqe_sp.type;
 
+               if (cqe_type == CORE_RX_CQE_TYPE_SLOW_PATH)
+                       if (qed_ll2_lb_rxq_handler_slowpath(p_hwfn,
+                                                           &cqe->rx_cqe_sp))
+                               continue;
+
                if (cqe_type != CORE_RX_CQE_TYPE_REGULAR) {
                        DP_NOTICE(p_hwfn,
                                  "Got a non-regular LB LL2 completion [type 0x%02x]\n",