[PATCH net-next 09/13] bnx2x: add pri_map module parameter
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STALE5452d
SUPERSEDED
From: Dmitry Kravkov <hidden>
Date: 2011-11-10 15:14:40
Subsystem:
broadcom bnx2x 10 gigabit ethernet driver, networking drivers, the rest · Maintainers:
Sudarsana Kalluru, Manish Chopra, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Revision v1 of 3 in this series.
Revisions (3)
- v1 current
- v2 [diff vs current]
- v3 [diff vs current]
From: Ariel Elior <redacted> The optional parameter pri_map is used to map the skb->priority to a Class Of Service (CoS) in the HW. This 32 bit parameter is evaluated by the driver as 8 values of 4 bits each. Each nibble sets the desired HW queue number for that priority. Also: on the 5771x family this feature is unavailable (a single COS services all). on the 57712 family two classes of service are available. on the 578xx family three classes of service are availabe. configuring priorities to unavailable COSs will log an error and default to COS 0. Signed-off-by: Dmitry Kravkov <redacted> Signed-off-by: Eilon Greenstein <redacted> --- drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c | 26 ++++++++++++++++++++++ 1 files changed, 26 insertions(+), 0 deletions(-)
diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
index 967c41b..5b44b85 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c@@ -92,6 +92,10 @@ MODULE_FIRMWARE(FW_FILE_NAME_E1); MODULE_FIRMWARE(FW_FILE_NAME_E1H); MODULE_FIRMWARE(FW_FILE_NAME_E2); +static uint pri_map; +module_param(pri_map, uint, 0); +MODULE_PARM_DESC(pri_map, " Priority to HW queue mapping"); + static int multi_mode = 1; module_param(multi_mode, int, 0); MODULE_PARM_DESC(multi_mode, " Multi queue mode "
@@ -9682,6 +9686,25 @@ static int __devinit bnx2x_get_hwinfo(struct bnx2x *bp) return rc; } +static void bnx2x_init_multi_cos(struct bnx2x *bp) +{ + int pri, cos; + for (pri = 0; pri < BNX2X_MAX_PRIORITY; pri++) { + cos = ((pri_map & (0xf << pri*4)) >> pri*4); + if (cos < bp->max_cos) { + bp->prio_to_cos[pri] = cos; + DP(BNX2X_MSG_SP, "configuring priority %d to cos %d", + pri, cos); + } else { + netdev_err(bp->dev, + "Illegal COS (%d) for priority %d " + "Max COS allowed is %d " + "defaulting to 0\n", cos, pri, bp->max_cos - 1); + bp->prio_to_cos[pri] = 0; + } + } +} + static void __devinit bnx2x_read_fwinfo(struct bnx2x *bp) { int cnt, i, block_end, rodi;
@@ -10832,6 +10855,9 @@ static int __devinit bnx2x_init_one(struct pci_dev *pdev, */ bnx2x_set_int_mode(bp); + /* configure priority to cos map according to pri_map module param */ + bnx2x_init_multi_cos(bp); + /* Add all NAPI objects */ bnx2x_add_all_napi(bp);
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1.7.7.2