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authorDmitry Kravkov <dmitry@broadcom.com>2011-07-24 04:09:43 +0000
committerDavid S. Miller <davem@davemloft.net>2011-07-24 13:11:40 -0700
commit09b775e7ec08ae92b8d976b7e34ba7f83b904c97 (patch)
treec2f892fcf6f1f1b4feeeb8728500f8bcdfe98e43 /drivers/net/bnx2x
parent262931339805ce8a7d25c5f75d5b2402013fc55d (diff)
bnx2x: dcb - send all unmapped priorities to same COS as L2
As a result of DCBX negotiation some priorities maybe untouched and still unmapped to any COS; instead of sending them to COS0 we assign them to the same COS as L2 traffic - to avoid collisions with storage class of service. Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com> Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/bnx2x')
-rw-r--r--drivers/net/bnx2x/bnx2x_dcb.c39
1 files changed, 33 insertions, 6 deletions
diff --git a/drivers/net/bnx2x/bnx2x_dcb.c b/drivers/net/bnx2x/bnx2x_dcb.c
index d028794a2298..a4ea35f6a456 100644
--- a/drivers/net/bnx2x/bnx2x_dcb.c
+++ b/drivers/net/bnx2x/bnx2x_dcb.c
@@ -19,15 +19,13 @@
#include <linux/netdevice.h>
#include <linux/types.h>
#include <linux/errno.h>
+#include <linux/rtnetlink.h>
+#include <net/dcbnl.h>
#include "bnx2x.h"
#include "bnx2x_cmn.h"
#include "bnx2x_dcb.h"
-#ifdef BCM_DCBNL
-#include <linux/rtnetlink.h>
-#endif
-
/* forward declarations of dcbx related functions */
static int bnx2x_dcbx_stop_hw_tx(struct bnx2x *bp);
static void bnx2x_pfc_set_pfc(struct bnx2x *bp);
@@ -333,6 +331,32 @@ static void bnx2x_dcbx_get_pfc_feature(struct bnx2x *bp,
}
}
+/* maps unmapped priorities to to the same COS as L2 */
+static void bnx2x_dcbx_map_nw(struct bnx2x *bp)
+{
+ int i;
+ u32 unmapped = (1 << MAX_PFC_PRIORITIES) - 1; /* all ones */
+ u32 *ttp = bp->dcbx_port_params.app.traffic_type_priority;
+ u32 nw_prio = 1 << ttp[LLFC_TRAFFIC_TYPE_NW];
+ struct bnx2x_dcbx_cos_params *cos_params =
+ bp->dcbx_port_params.ets.cos_params;
+
+ /* get unmapped priorities by clearing mapped bits */
+ for (i = 0; i < LLFC_DRIVER_TRAFFIC_TYPE_MAX; i++)
+ unmapped &= ~(1 << ttp[i]);
+
+ /* find cos for nw prio and extend it with unmapped */
+ for (i = 0; i < ARRAY_SIZE(bp->dcbx_port_params.ets.cos_params); i++) {
+ if (cos_params[i].pri_bitmask & nw_prio) {
+ /* extend the bitmask with unmapped */
+ DP(NETIF_MSG_LINK,
+ "cos %d extended with 0x%08x", i, unmapped);
+ cos_params[i].pri_bitmask |= unmapped;
+ break;
+ }
+ }
+}
+
static void bnx2x_get_dcbx_drv_param(struct bnx2x *bp,
struct dcbx_features *features,
u32 error)
@@ -342,6 +366,8 @@ static void bnx2x_get_dcbx_drv_param(struct bnx2x *bp,
bnx2x_dcbx_get_pfc_feature(bp, &features->pfc, error);
bnx2x_dcbx_get_ets_feature(bp, &features->ets, error);
+
+ bnx2x_dcbx_map_nw(bp);
}
#define DCBX_LOCAL_MIB_MAX_TRY_READ (100)
@@ -682,6 +708,8 @@ static inline void bnx2x_dcbx_update_tc_mapping(struct bnx2x *bp)
if (bp->dcbx_port_params.ets.cos_params[cos].pri_bitmask
& (1 << prio)) {
bp->prio_to_cos[prio] = cos;
+ DP(NETIF_MSG_LINK,
+ "tx_mapping %d --> %d\n", prio, cos);
}
}
}
@@ -749,7 +777,7 @@ void bnx2x_dcbx_set_params(struct bnx2x *bp, u32 state)
DP(NETIF_MSG_LINK, "BNX2X_DCBX_STATE_TX_RELEASED\n");
bnx2x_fw_command(bp, DRV_MSG_CODE_DCBX_PMF_DRV_OK, 0);
#ifdef BCM_DCBNL
- /**
+ /*
* Send a notification for the new negotiated parameters
*/
dcbnl_cee_notify(bp->dev, RTM_GETDCB, DCB_CMD_CEE_GET, 0, 0);
@@ -1732,7 +1760,6 @@ static void bnx2x_dcbx_fill_cos_params(struct bnx2x *bp,
pri_join_mask,
num_of_dif_pri);
-
for (i = 0; i < cos_data.num_of_cos ; i++) {
struct bnx2x_dcbx_cos_params *p =
&bp->dcbx_port_params.ets.cos_params[i];

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