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fm10k: Add support for MACVLAN acceleration

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This patch adds support for L2 MACVLAN by making use of the fact that the
RRC provides a unique tag per filter called a Global Resource Tag, or GLORT.
In the case of this offload what I have done is assigned a linear block of
these so that each GLORT represents one of the MACVLAN netdevs.  By doing
this I can share the Rx queues and Tx queues for all of the MACVLAN netdevs
while allowing them to be demuxed in the Rx cleanup path.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Alexander Duyck
2014-09-20 19:51:15 -04:00
committed by Jeff Kirsher
parent 76a540d472
commit 5cd5e2e982
4 changed files with 198 additions and 1 deletions
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11
drivers/net/ethernet/intel/fm10k/fm10k.h
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@@ -54,6 +54,15 @@
/* How many Rx Buffers do we bundle into one write to the hardware ? */
#define FM10K_RX_BUFFER_WRITE 16 /* Must be power of 2 */
#define FM10K_MAX_STATIONS 63
struct fm10k_l2_accel {
int size;
u16 count;
u16 dglort;
struct rcu_head rcu;
struct net_device *macvlan[0];
};
enum fm10k_ring_state_t {
__FM10K_TX_DETECT_HANG,
__FM10K_HANG_CHECK_ARMED,
@@ -104,6 +113,7 @@ struct fm10k_ring {
struct fm10k_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 fm10k_l2_accel __rcu *l2_accel; /* L2 acceleration list */
void *desc; /* descriptor ring memory */
union {
struct fm10k_tx_buffer *tx_buffer;
@@ -217,6 +227,7 @@ struct fm10k_vxlan_port {
struct fm10k_intfc {
unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
struct net_device *netdev;
struct fm10k_l2_accel *l2_accel; /* pointer to L2 acceleration list */
struct pci_dev *pdev;
unsigned long state;