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ixgbe: enable l2 forwarding acceleration for macvlans

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Now that l2 acceleration ops are in place from the prior patch,
enable ixgbe to take advantage of these operations.  Allow it to
allocate queues for a macvlan so that when we transmit a frame,
we can do the switching in hardware inside the ixgbe card, rather
than in software.

Signed-off-by: John Fastabend <john.r.fastabend@intel.com>
Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
CC: Andy Gospodarek <andy@greyhouse.net>
CC: "David S. Miller" <davem@davemloft.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
John Fastabend
2013-11-06 09:54:52 -08:00
committed by David S. Miller
parent a6cc0cfa72
commit 2a47fa45d4
4 changed files with 443 additions and 89 deletions
Download Patch File Download Diff File Expand all files Collapse all files

20
drivers/net/ethernet/intel/ixgbe/ixgbe.h
View File

@@ -223,6 +223,15 @@ enum ixgbe_ring_state_t {
__IXGBE_RX_FCOE,
};
struct ixgbe_fwd_adapter {
unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
struct net_device *netdev;
struct ixgbe_adapter *real_adapter;
unsigned int tx_base_queue;
unsigned int rx_base_queue;
int pool;
};
#define check_for_tx_hang(ring) \
test_bit(__IXGBE_TX_DETECT_HANG, &(ring)->state)
#define set_check_for_tx_hang(ring) \
@@ -240,6 +249,7 @@ struct ixgbe_ring {
struct ixgbe_q_vector *q_vector; /* backpointer to host q_vector */
struct net_device *netdev; /* netdev ring belongs to */
struct device *dev; /* device for DMA mapping */
struct ixgbe_fwd_adapter *l2_accel_priv;
void *desc; /* descriptor ring memory */
union {
struct ixgbe_tx_buffer *tx_buffer_info;
@@ -297,6 +307,12 @@ enum ixgbe_ring_f_enum {
#define IXGBE_MAX_FCOE_INDICES 8
#define MAX_RX_QUEUES (IXGBE_MAX_FDIR_INDICES + 1)
#define MAX_TX_QUEUES (IXGBE_MAX_FDIR_INDICES + 1)
#define IXGBE_MAX_L2A_QUEUES 4
#define IXGBE_MAX_L2A_QUEUES 4
#define IXGBE_BAD_L2A_QUEUE 3
#define IXGBE_MAX_MACVLANS 31
#define IXGBE_MAX_DCBMACVLANS 8
struct ixgbe_ring_feature {
u16 limit; /* upper limit on feature indices */
u16 indices; /* current value of indices */
@@ -766,6 +782,7 @@ struct ixgbe_adapter {
#endif /*CONFIG_DEBUG_FS*/
u8 default_up;
unsigned long fwd_bitmask; /* Bitmask indicating in use pools */
};
struct ixgbe_fdir_filter {
@@ -939,4 +956,7 @@ void ixgbe_ptp_check_pps_event(struct ixgbe_adapter *adapter, u32 eicr);
void ixgbe_sriov_reinit(struct ixgbe_adapter *adapter);
#endif
netdev_tx_t ixgbe_xmit_frame_ring(struct sk_buff *skb,
struct ixgbe_adapter *adapter,
struct ixgbe_ring *tx_ring);
#endif /* _IXGBE_H_ */

15
drivers/net/ethernet/intel/ixgbe/ixgbe_lib.c
View File

@@ -498,6 +498,7 @@ static bool ixgbe_set_sriov_queues(struct ixgbe_adapter *adapter)
#ifdef IXGBE_FCOE
u16 fcoe_i = 0;
#endif
bool pools = (find_first_zero_bit(&adapter->fwd_bitmask, 32) > 1);
/* only proceed if SR-IOV is enabled */
if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED))
@@ -510,7 +511,7 @@ static bool ixgbe_set_sriov_queues(struct ixgbe_adapter *adapter)
vmdq_i = min_t(u16, IXGBE_MAX_VMDQ_INDICES, vmdq_i);
/* 64 pool mode with 2 queues per pool */
if ((vmdq_i > 32) || (rss_i < 4)) {
if ((vmdq_i > 32) || (rss_i < 4) || (vmdq_i > 16 && pools)) {
vmdq_m = IXGBE_82599_VMDQ_2Q_MASK;
rss_m = IXGBE_RSS_2Q_MASK;
rss_i = min_t(u16, rss_i, 2);
@@ -852,7 +853,11 @@ static int ixgbe_alloc_q_vector(struct ixgbe_adapter *adapter,
/* apply Tx specific ring traits */
ring->count = adapter->tx_ring_count;
ring->queue_index = txr_idx;
if (adapter->num_rx_pools > 1)
ring->queue_index =
txr_idx % adapter->num_rx_queues_per_pool;
else
ring->queue_index = txr_idx;
/* assign ring to adapter */
adapter->tx_ring[txr_idx] = ring;
@@ -895,7 +900,11 @@ static int ixgbe_alloc_q_vector(struct ixgbe_adapter *adapter,
#endif /* IXGBE_FCOE */
/* apply Rx specific ring traits */
ring->count = adapter->rx_ring_count;
ring->queue_index = rxr_idx;
if (adapter->num_rx_pools > 1)
ring->queue_index =
rxr_idx % adapter->num_rx_queues_per_pool;
else
ring->queue_index = rxr_idx;
/* assign ring to adapter */
adapter->rx_ring[rxr_idx] = ring;

480
drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
View File

File diff suppressed because it is too large Load Diff

17
drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c
View File

@@ -223,17 +223,19 @@ int ixgbe_disable_sriov(struct ixgbe_adapter *adapter)
IXGBE_WRITE_FLUSH(hw);
/* Disable VMDq flag so device will be set in VM mode */
if (adapter->ring_feature[RING_F_VMDQ].limit == 1)
if (adapter->ring_feature[RING_F_VMDQ].limit == 1) {
adapter->flags &= ~IXGBE_FLAG_VMDQ_ENABLED;
adapter->ring_feature[RING_F_VMDQ].offset = 0;
adapter->flags &= ~IXGBE_FLAG_SRIOV_ENABLED;
rss = min_t(int, IXGBE_MAX_RSS_INDICES, num_online_cpus());
} else {
rss = min_t(int, IXGBE_MAX_L2A_QUEUES, num_online_cpus());
}
rss = min_t(int, IXGBE_MAX_RSS_INDICES, num_online_cpus());
adapter->ring_feature[RING_F_VMDQ].offset = 0;
adapter->ring_feature[RING_F_RSS].limit = rss;
/* take a breather then clean up driver data */
msleep(100);
adapter->flags &= ~IXGBE_FLAG_SRIOV_ENABLED;
return 0;
}
@@ -298,13 +300,10 @@ static int ixgbe_pci_sriov_disable(struct pci_dev *dev)
err = ixgbe_disable_sriov(adapter);
/* Only reinit if no error and state changed */
if (!err && current_flags != adapter->flags) {
/* ixgbe_disable_sriov() doesn't clear VMDQ flag */
adapter->flags &= ~IXGBE_FLAG_VMDQ_ENABLED;
#ifdef CONFIG_PCI_IOV
if (!err && current_flags != adapter->flags)
ixgbe_sriov_reinit(adapter);
#endif
}
return err;
}