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authorEmil Tantilov <emil.s.tantilov@intel.com>2014-12-06 09:19:02 +0000
committerJeff Kirsher <jeffrey.t.kirsher@intel.com>2015-02-05 19:57:46 -0800
commit2dc571aa61d3fe5b20167f16e0390e749cd4bb97 (patch)
tree4d2b4510d1b7413198297a3b6867a6e429eb39f4 /drivers/net/ethernet/intel/ixgbevf
parentdec2e395fd35ebbd642c71b1c871298cba68cded (diff)
downloadlinux-linaro-stable-2dc571aa61d3fe5b20167f16e0390e749cd4bb97.tar.gz
ixgbevf: enable multiple queue support
This patch enables multiple queues and RSS support for the VF. Maximum of 2 queues are supported due to available vectors. Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com> Tested-by: Krishneil Singh <Krishneil.k.singh@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/ethernet/intel/ixgbevf')
-rw-r--r--drivers/net/ethernet/intel/ixgbevf/ixgbevf.h1
-rw-r--r--drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c22
2 files changed, 20 insertions, 3 deletions
diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf.h b/drivers/net/ethernet/intel/ixgbevf/ixgbevf.h
index 8c44ab25f3fa..65cda344eec9 100644
--- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf.h
+++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf.h
@@ -124,6 +124,7 @@ struct ixgbevf_ring {
#define MAX_RX_QUEUES IXGBE_VF_MAX_RX_QUEUES
#define MAX_TX_QUEUES IXGBE_VF_MAX_TX_QUEUES
+#define IXGBEVF_MAX_RSS_QUEUES 2
#define IXGBEVF_DEFAULT_TXD 1024
#define IXGBEVF_DEFAULT_RXD 512
diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
index fe2e10f40df8..92154ee87b42 100644
--- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
+++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
@@ -1794,7 +1794,8 @@ static int ixgbevf_configure_dcb(struct ixgbevf_adapter *adapter)
struct ixgbe_hw *hw = &adapter->hw;
unsigned int def_q = 0;
unsigned int num_tcs = 0;
- unsigned int num_rx_queues = 1;
+ unsigned int num_rx_queues = adapter->num_rx_queues;
+ unsigned int num_tx_queues = adapter->num_tx_queues;
int err;
spin_lock_bh(&adapter->mbx_lock);
@@ -1808,6 +1809,9 @@ static int ixgbevf_configure_dcb(struct ixgbevf_adapter *adapter)
return err;
if (num_tcs > 1) {
+ /* we need only one Tx queue */
+ num_tx_queues = 1;
+
/* update default Tx ring register index */
adapter->tx_ring[0]->reg_idx = def_q;
@@ -1816,7 +1820,8 @@ static int ixgbevf_configure_dcb(struct ixgbevf_adapter *adapter)
}
/* if we have a bad config abort request queue reset */
- if (adapter->num_rx_queues != num_rx_queues) {
+ if ((adapter->num_rx_queues != num_rx_queues) ||
+ (adapter->num_tx_queues != num_tx_queues)) {
/* force mailbox timeout to prevent further messages */
hw->mbx.timeout = 0;
@@ -2181,8 +2186,19 @@ static void ixgbevf_set_num_queues(struct ixgbevf_adapter *adapter)
return;
/* we need as many queues as traffic classes */
- if (num_tcs > 1)
+ if (num_tcs > 1) {
adapter->num_rx_queues = num_tcs;
+ } else {
+ u16 rss = min_t(u16, num_online_cpus(), IXGBEVF_MAX_RSS_QUEUES);
+
+ switch (hw->api_version) {
+ case ixgbe_mbox_api_11:
+ adapter->num_rx_queues = rss;
+ adapter->num_tx_queues = rss;
+ default:
+ break;
+ }
+ }
}
/**