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authorHimanshu Madhani <himanshu.madhani@qlogic.com>2013-11-04 13:31:31 -0500
committerDavid S. Miller <davem@davemloft.net>2013-11-04 15:33:19 -0500
commit34e8c406fda5b5a9d2e126a92bab84cd28e3b5fa (patch)
tree7867f7b76c97c693425d76e424ce54aa7e0dcbd2 /drivers/net/ethernet/qlogic/qlcnic/qlcnic_ethtool.c
parentf27c75b3903ab02bfe295aa58ad61ef5b756b065 (diff)
qlcnic: refactor Tx/SDS ring calculation and validation in driver.
o Current driver has duplicate code for validating user input for changing Tx/SDS rings using set_channel ethtool interface. This patch removes duplicate code and refactored Tx/SDS ring validation for 82xx/83xx/84xx series adapter. o Refactored code now calculates maximum Tx/Rx ring driver can support based on Default, NPAR and SRIOV PF/VF mode of driver. Signed-off-by: Himanshu Madhani <himanshu.madhani@qlogic.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/qlogic/qlcnic/qlcnic_ethtool.c')
-rw-r--r--drivers/net/ethernet/qlogic/qlcnic/qlcnic_ethtool.c116
1 files changed, 79 insertions, 37 deletions
diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_ethtool.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_ethtool.c
index 9b6dd984fe00..225743cc82eb 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_ethtool.c
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_ethtool.c
@@ -226,9 +226,9 @@ static const u32 ext_diag_registers[] = {
static inline int qlcnic_get_ring_regs_len(struct qlcnic_adapter *adapter)
{
- int ring_regs_cnt = (adapter->max_drv_tx_rings * 5) +
+ int ring_regs_cnt = (adapter->drv_tx_rings * 5) +
(adapter->max_rds_rings * 2) +
- (adapter->max_sds_rings * 3) + 5;
+ (adapter->drv_sds_rings * 3) + 5;
return ring_regs_cnt * sizeof(u32);
}
@@ -530,8 +530,8 @@ qlcnic_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *p)
/* Marker btw regs and TX ring count */
regs_buff[i++] = 0xFFEFCDAB;
- regs_buff[i++] = adapter->max_drv_tx_rings; /* No. of TX ring */
- for (ring = 0; ring < adapter->max_drv_tx_rings; ring++) {
+ regs_buff[i++] = adapter->drv_tx_rings; /* No. of TX ring */
+ for (ring = 0; ring < adapter->drv_tx_rings; ring++) {
tx_ring = &adapter->tx_ring[ring];
regs_buff[i++] = le32_to_cpu(*(tx_ring->hw_consumer));
regs_buff[i++] = tx_ring->sw_consumer;
@@ -550,8 +550,8 @@ qlcnic_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *p)
regs_buff[i++] = rds_rings->producer;
}
- regs_buff[i++] = adapter->max_sds_rings; /* No. of SDS ring */
- for (ring = 0; ring < adapter->max_sds_rings; ring++) {
+ regs_buff[i++] = adapter->drv_sds_rings; /* No. of SDS ring */
+ for (ring = 0; ring < adapter->drv_sds_rings; ring++) {
sds_ring = &(recv_ctx->sds_rings[ring]);
regs_buff[i++] = readl(sds_ring->crb_sts_consumer);
regs_buff[i++] = sds_ring->consumer;
@@ -664,46 +664,88 @@ qlcnic_set_ringparam(struct net_device *dev,
return qlcnic_reset_context(adapter);
}
+static int qlcnic_validate_ring_count(struct qlcnic_adapter *adapter,
+ u8 rx_ring, u8 tx_ring)
+{
+ if (rx_ring != 0) {
+ if (rx_ring > adapter->max_sds_rings) {
+ netdev_err(adapter->netdev, "Invalid ring count, SDS ring count %d should not be greater than max %d driver sds rings.\n",
+ rx_ring, adapter->max_sds_rings);
+ return -EINVAL;
+ }
+ }
+
+ if (tx_ring != 0) {
+ if (qlcnic_82xx_check(adapter) &&
+ (tx_ring > adapter->max_tx_rings)) {
+ netdev_err(adapter->netdev,
+ "Invalid ring count, Tx ring count %d should not be greater than max %d driver Tx rings.\n",
+ tx_ring, adapter->max_tx_rings);
+ return -EINVAL;
+ }
+
+ if (qlcnic_83xx_check(adapter) &&
+ (tx_ring > QLCNIC_SINGLE_RING)) {
+ netdev_err(adapter->netdev,
+ "Invalid ring count, Tx ring count %d should not be greater than %d driver Tx rings.\n",
+ tx_ring, QLCNIC_SINGLE_RING);
+ return -EINVAL;
+ }
+ }
+
+ return 0;
+}
+
static void qlcnic_get_channels(struct net_device *dev,
struct ethtool_channels *channel)
{
struct qlcnic_adapter *adapter = netdev_priv(dev);
- int min;
-
- min = min_t(int, adapter->ahw->max_rx_ques, num_online_cpus());
- channel->max_rx = rounddown_pow_of_two(min);
- channel->max_tx = min_t(int, QLCNIC_MAX_TX_RINGS, num_online_cpus());
- channel->rx_count = adapter->max_sds_rings;
- channel->tx_count = adapter->max_drv_tx_rings;
+ channel->max_rx = adapter->max_sds_rings;
+ channel->max_tx = adapter->max_tx_rings;
+ channel->rx_count = adapter->drv_sds_rings;
+ channel->tx_count = adapter->drv_tx_rings;
}
static int qlcnic_set_channels(struct net_device *dev,
- struct ethtool_channels *channel)
+ struct ethtool_channels *channel)
{
struct qlcnic_adapter *adapter = netdev_priv(dev);
int err;
- int txq = 0;
if (channel->other_count || channel->combined_count)
return -EINVAL;
+ err = qlcnic_validate_ring_count(adapter, channel->rx_count,
+ channel->tx_count);
+ if (err)
+ return err;
+
if (channel->rx_count) {
- err = qlcnic_validate_max_rss(adapter, channel->rx_count);
- if (err)
+ err = qlcnic_validate_rings(adapter, channel->rx_count,
+ QLCNIC_RX_QUEUE);
+ if (err) {
+ netdev_err(dev, "Unable to configure %u SDS rings\n",
+ channel->rx_count);
return err;
+ }
}
if (qlcnic_82xx_check(adapter) && channel->tx_count) {
- err = qlcnic_validate_max_tx_rings(adapter, channel->tx_count);
- if (err)
+ err = qlcnic_validate_rings(adapter, channel->tx_count,
+ QLCNIC_TX_QUEUE);
+ if (err) {
+ netdev_err(dev, "Unable to configure %u Tx rings\n",
+ channel->tx_count);
return err;
- txq = channel->tx_count;
+ }
}
- err = qlcnic_set_max_rss(adapter, channel->rx_count, txq);
- netdev_info(dev, "allocated 0x%x sds rings and 0x%x tx rings\n",
- adapter->max_sds_rings, adapter->max_drv_tx_rings);
+ err = qlcnic_setup_rings(adapter, channel->rx_count,
+ channel->tx_count);
+ netdev_info(dev, "Allocated %d SDS rings and %d Tx rings\n",
+ adapter->drv_sds_rings, adapter->drv_tx_rings);
+
return err;
}
@@ -905,7 +947,7 @@ static int qlcnic_irq_test(struct net_device *netdev)
struct qlcnic_adapter *adapter = netdev_priv(netdev);
struct qlcnic_hardware_context *ahw = adapter->ahw;
struct qlcnic_cmd_args cmd;
- int ret, max_sds_rings = adapter->max_sds_rings;
+ int ret, drv_sds_rings = adapter->drv_sds_rings;
if (qlcnic_83xx_check(adapter))
return qlcnic_83xx_interrupt_test(netdev);
@@ -934,10 +976,10 @@ done:
qlcnic_free_mbx_args(&cmd);
free_diag_res:
- qlcnic_diag_free_res(netdev, max_sds_rings);
+ qlcnic_diag_free_res(netdev, drv_sds_rings);
clear_diag_irq:
- adapter->max_sds_rings = max_sds_rings;
+ adapter->drv_sds_rings = drv_sds_rings;
clear_bit(__QLCNIC_RESETTING, &adapter->state);
return ret;
@@ -1013,8 +1055,8 @@ int qlcnic_do_lb_test(struct qlcnic_adapter *adapter, u8 mode)
int qlcnic_loopback_test(struct net_device *netdev, u8 mode)
{
struct qlcnic_adapter *adapter = netdev_priv(netdev);
- int max_drv_tx_rings = adapter->max_drv_tx_rings;
- int max_sds_rings = adapter->max_sds_rings;
+ int drv_tx_rings = adapter->drv_tx_rings;
+ int drv_sds_rings = adapter->drv_sds_rings;
struct qlcnic_host_sds_ring *sds_ring;
struct qlcnic_hardware_context *ahw = adapter->ahw;
int loop = 0;
@@ -1069,11 +1111,11 @@ int qlcnic_loopback_test(struct net_device *netdev, u8 mode)
qlcnic_clear_lb_mode(adapter, mode);
free_res:
- qlcnic_diag_free_res(netdev, max_sds_rings);
+ qlcnic_diag_free_res(netdev, drv_sds_rings);
clear_it:
- adapter->max_sds_rings = max_sds_rings;
- adapter->max_drv_tx_rings = max_drv_tx_rings;
+ adapter->drv_sds_rings = drv_sds_rings;
+ adapter->drv_tx_rings = drv_tx_rings;
clear_bit(__QLCNIC_RESETTING, &adapter->state);
return ret;
}
@@ -1127,7 +1169,7 @@ qlcnic_get_strings(struct net_device *dev, u32 stringset, u8 *data)
break;
case ETH_SS_STATS:
num_stats = ARRAY_SIZE(qlcnic_tx_queue_stats_strings);
- for (i = 0; i < adapter->max_drv_tx_rings; i++) {
+ for (i = 0; i < adapter->drv_tx_rings; i++) {
for (index = 0; index < num_stats; index++) {
sprintf(data, "tx_queue_%d %s", i,
qlcnic_tx_queue_stats_strings[index]);
@@ -1233,7 +1275,7 @@ static void qlcnic_update_stats(struct qlcnic_adapter *adapter)
struct qlcnic_host_tx_ring *tx_ring;
int ring;
- for (ring = 0; ring < adapter->max_drv_tx_rings; ring++) {
+ for (ring = 0; ring < adapter->drv_tx_rings; ring++) {
tx_ring = &adapter->tx_ring[ring];
adapter->stats.xmit_on += tx_ring->tx_stats.xmit_on;
adapter->stats.xmit_off += tx_ring->tx_stats.xmit_off;
@@ -1268,10 +1310,10 @@ static void qlcnic_get_ethtool_stats(struct net_device *dev,
int index, ret, length, size, tx_size, ring;
char *p;
- tx_size = adapter->max_drv_tx_rings * QLCNIC_TX_STATS_LEN;
+ tx_size = adapter->drv_tx_rings * QLCNIC_TX_STATS_LEN;
memset(data, 0, tx_size * sizeof(u64));
- for (ring = 0, index = 0; ring < adapter->max_drv_tx_rings; ring++) {
+ for (ring = 0, index = 0; ring < adapter->drv_tx_rings; ring++) {
if (test_bit(__QLCNIC_DEV_UP, &adapter->state)) {
tx_ring = &adapter->tx_ring[ring];
data = qlcnic_fill_tx_queue_stats(data, tx_ring);
@@ -1320,7 +1362,7 @@ static int qlcnic_set_led(struct net_device *dev,
enum ethtool_phys_id_state state)
{
struct qlcnic_adapter *adapter = netdev_priv(dev);
- int max_sds_rings = adapter->max_sds_rings;
+ int drv_sds_rings = adapter->drv_sds_rings;
int err = -EIO, active = 1;
if (qlcnic_83xx_check(adapter))
@@ -1378,7 +1420,7 @@ static int qlcnic_set_led(struct net_device *dev,
}
if (test_and_clear_bit(__QLCNIC_DIAG_RES_ALLOC, &adapter->state))
- qlcnic_diag_free_res(dev, max_sds_rings);
+ qlcnic_diag_free_res(dev, drv_sds_rings);
if (!active || err)
clear_bit(__QLCNIC_LED_ENABLE, &adapter->state);