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cnic: Fine-tune ring init code. 

Initialize the rings only during cnic_uio_open() and shut them down
during cnic_uio_close().  Check for the new bit CNIC_LCL_FL_RINGS_INITED
before checking for ring interrupt.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Michael Chan 2010-10-06 03:17:22 +00:00 committed by David S. Miller
parent 1420398db4
commit 541a78103f
2 changed files with 19 additions and 6 deletions
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24
drivers/net/cnic.c
View File

@ -2202,13 +2202,14 @@ static int cnic_l2_completion(struct cnic_local *cp)
static void cnic_chk_pkt_rings(struct cnic_local *cp)
{
u16 rx_cons = *cp->rx_cons_ptr;
u16 tx_cons = *cp->tx_cons_ptr;
u16 rx_cons, tx_cons;
int comp = 0;
if (!test_bit(CNIC_F_CNIC_UP, &cp->dev->flags))
if (!test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
return;
rx_cons = *cp->rx_cons_ptr;
tx_cons = *cp->tx_cons_ptr;
if (cp->tx_cons != tx_cons || cp->rx_cons != rx_cons) {
if (test_bit(CNIC_LCL_FL_L2_WAIT, &cp->cnic_local_flags))
comp = cnic_l2_completion(cp);
@ -4202,17 +4203,20 @@ static int cnic_start_bnx2x_hw(struct cnic_dev *dev)
if (ret)
return ret;
cnic_init_bnx2x_tx_ring(dev);
cnic_init_bnx2x_rx_ring(dev);
return 0;
}
static void cnic_init_rings(struct cnic_dev *dev)
{
struct cnic_local *cp = dev->cnic_priv;
if (test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
return;
if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
cnic_init_bnx2_tx_ring(dev);
cnic_init_bnx2_rx_ring(dev);
set_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
} else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
struct cnic_local *cp = dev->cnic_priv;
u32 cli = BNX2X_ISCSI_CL_ID(CNIC_E1HVN(cp));
@ -4235,6 +4239,8 @@ static void cnic_init_rings(struct cnic_dev *dev)
cnic_init_bnx2x_tx_ring(dev);
cnic_init_bnx2x_rx_ring(dev);
set_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
l5_data.phy_address.lo = cli;
l5_data.phy_address.hi = 0;
cnic_submit_kwqe_16(dev, RAMROD_CMD_ID_ETH_CLIENT_SETUP,
@ -4254,6 +4260,11 @@ static void cnic_init_rings(struct cnic_dev *dev)
static void cnic_shutdown_rings(struct cnic_dev *dev)
{
struct cnic_local *cp = dev->cnic_priv;
if (!test_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags))
return;
if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags)) {
cnic_shutdown_bnx2_rx_ring(dev);
} else if (test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) {
@ -4286,6 +4297,7 @@ static void cnic_shutdown_rings(struct cnic_dev *dev)
(1 << SPE_HDR_COMMON_RAMROD_SHIFT), &l5_data);
msleep(10);
}
clear_bit(CNIC_LCL_FL_RINGS_INITED, &cp->cnic_local_flags);
}
static int cnic_register_netdev(struct cnic_dev *dev)

1
drivers/net/cnic.h
View File

@ -192,6 +192,7 @@ struct cnic_local {
unsigned long cnic_local_flags;
#define CNIC_LCL_FL_KWQ_INIT 0x0
#define CNIC_LCL_FL_L2_WAIT 0x1
#define CNIC_LCL_FL_RINGS_INITED 0x2
struct cnic_dev *dev;