qed: Update TCP silly-window-syndrome timeout for iwarp, scsi

Update TCP silly-window-syndrome timeout, for the cases where
initiator's small TCP window size prevents FW from transmitting
packets on the connection. Timeout causes FW to retransmit
window probes if needed, preventing I/O stall if initiator ignores
first window probe.

Reviewed-by: Manish Rangankar <mrangankar@marvell.com>
Signed-off-by: Nikolay Assa <nassa@marvell.com>
Signed-off-by: Ariel Elior <aelior@marvell.com>
Signed-off-by: Shai Malin <smalin@marvell.com>
Signed-off-by: Omkar Kulkarni <okulkarni@marvell.com>
Signed-off-by: Prabhakar Kushwaha <pkushwaha@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/qlogic/qed/qed_iwarp.c b/drivers/net/ethernet/qlogic/qed/qed_iwarp.c
index 186d004..b2c0e52 100644 (file)
--- a/drivers/net/ethernet/qlogic/qed/qed_iwarp.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_iwarp.c
@@ -114,6 +114,7 @@ qed_iwarp_init_fw_ramrod(struct qed_hwfn *p_hwfn,
            RESC_START(p_hwfn, QED_LL2_RAM_QUEUE) +
            p_hwfn->p_rdma_info->iwarp.ll2_ooo_handle;
 
+       p_ramrod->tcp.tx_sws_timer = cpu_to_le16(QED_TX_SWS_TIMER_DFLT);
        p_ramrod->tcp.max_fin_rt = QED_IWARP_MAX_FIN_RT_DEFAULT;
 
        return;

diff --git a/drivers/scsi/qedi/qedi_main.c b/drivers/scsi/qedi/qedi_main.c
index fe36ddb..8c2f326 100644 (file)
--- a/drivers/scsi/qedi/qedi_main.c
+++ b/drivers/scsi/qedi/qedi_main.c
@@ -866,6 +866,7 @@ static int qedi_set_iscsi_pf_param(struct qedi_ctx *qedi)
        qedi->pf_params.iscsi_pf_params.num_queues = qedi->num_queues;
        qedi->pf_params.iscsi_pf_params.debug_mode = qedi_fw_debug;
        qedi->pf_params.iscsi_pf_params.two_msl_timer = 4000;
+       qedi->pf_params.iscsi_pf_params.tx_sws_timer = QED_TX_SWS_TIMER_DFLT;
        qedi->pf_params.iscsi_pf_params.max_fin_rt = 2;
 
        for (log_page_size = 0 ; log_page_size < 32 ; log_page_size++) {

diff --git a/include/linux/qed/qed_if.h b/include/linux/qed/qed_if.h
index 4dcd0d3..07f8d19 100644 (file)
--- a/include/linux/qed/qed_if.h
+++ b/include/linux/qed/qed_if.h
@@ -24,6 +24,8 @@
 #include <linux/io-64-nonatomic-lo-hi.h>
 #include <net/devlink.h>
 
+#define QED_TX_SWS_TIMER_DFLT  500
+
 enum dcbx_protocol_type {
        DCBX_PROTOCOL_ISCSI,
        DCBX_PROTOCOL_FCOE,