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| author | Dmitry Kravkov <dmitry@broadcom.com> | 2011-07-24 04:09:43 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-07-24 13:11:40 -0700 |
| commit | 09b775e7ec08ae92b8d976b7e34ba7f83b904c97 (patch) | |
| tree | c2f892fcf6f1f1b4feeeb8728500f8bcdfe98e43 /drivers | |
| parent | 262931339805ce8a7d25c5f75d5b2402013fc55d (diff) | |
| download | lwn-09b775e7ec08ae92b8d976b7e34ba7f83b904c97.tar.gz lwn-09b775e7ec08ae92b8d976b7e34ba7f83b904c97.zip | |
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')
| -rw-r--r-- | drivers/net/bnx2x/bnx2x_dcb.c | 39 |
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]; |