[PATCH 24/41]bnx2x: Manual setting for MRRS
DORMANTno replies
From: Eilon Greenstein <hidden>
Date: 2009-02-12 18:37:45
Subsystem:
networking drivers, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Subject: [PATCH 24/41]bnx2x: Manual setting for MRRS Allows better debug capabilities if the user wants to force an MRRS value Signed-off-by: Eilon Greenstein <redacted> --- drivers/net/bnx2x.h | 1 + drivers/net/bnx2x_init.h | 7 ++++++- drivers/net/bnx2x_main.c | 6 ++++++ 3 files changed, 13 insertions(+), 1 deletions(-)
diff --git a/drivers/net/bnx2x.h b/drivers/net/bnx2x.h
index 9834a86..891a58e 100644
--- a/drivers/net/bnx2x.h
+++ b/drivers/net/bnx2x.h@@ -864,6 +864,7 @@ struct bnx2x { int pm_cap; int pcie_cap; + int mrrs; struct delayed_work sp_task; struct work_struct reset_task;
diff --git a/drivers/net/bnx2x_init.h b/drivers/net/bnx2x_init.h
index a6c0b3a..961db49 100644
--- a/drivers/net/bnx2x_init.h
+++ b/drivers/net/bnx2x_init.h@@ -572,7 +572,12 @@ static void bnx2x_init_pxp(struct bnx2x *bp) bp->pcie_cap + PCI_EXP_DEVCTL, &devctl); DP(NETIF_MSG_HW, "read 0x%x from devctl\n", devctl); w_order = ((devctl & PCI_EXP_DEVCTL_PAYLOAD) >> 5); - r_order = ((devctl & PCI_EXP_DEVCTL_READRQ) >> 12); + if (bp->mrrs == -1) + r_order = ((devctl & PCI_EXP_DEVCTL_READRQ) >> 12); + else { + DP(NETIF_MSG_HW, "force read order to %d\n", bp->mrrs); + r_order = bp->mrrs; + } if (r_order > MAX_RD_ORD) { DP(NETIF_MSG_HW, "read order of %d order adjusted to %d\n",
diff --git a/drivers/net/bnx2x_main.c b/drivers/net/bnx2x_main.c
index 60a4e94..2e4d64d 100644
--- a/drivers/net/bnx2x_main.c
+++ b/drivers/net/bnx2x_main.c@@ -88,6 +88,11 @@ module_param(int_mode, int, 0); MODULE_PARM_DESC(int_mode, " Force interrupt mode (1 INT#x; 2 MSI)"); module_param(poll, int, 0); + +static int mrrs = -1; +module_param(mrrs, int, 0); +MODULE_PARM_DESC(mrrs, " Force Max Read Req Size (0..3) (for debug)"); + module_param(debug, int, 0); MODULE_PARM_DESC(disable_tpa, "disable the TPA (LRO) feature"); MODULE_PARM_DESC(poll, "use polling (for debug)");
@@ -8160,6 +8165,7 @@ static int __devinit bnx2x_init_bp(struct bnx2x *bp) bp->dev->features |= NETIF_F_LRO; } + bp->mrrs = mrrs; bp->tx_ring_size = MAX_TX_AVAIL; bp->rx_ring_size = MAX_RX_AVAIL;
--
1.5.4.3