summaryrefslogtreecommitdiffstats
path: root/kernel/drivers/net/xen-netback/common.h
diff options
context:
space:
mode:
authorJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-04-11 10:41:07 +0300
committerJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-04-13 08:17:18 +0300
commite09b41010ba33a20a87472ee821fa407a5b8da36 (patch)
treed10dc367189862e7ca5c592f033dc3726e1df4e3 /kernel/drivers/net/xen-netback/common.h
parentf93b97fd65072de626c074dbe099a1fff05ce060 (diff)
These changes are the raw update to linux-4.4.6-rt14. Kernel sources
are taken from kernel.org, and rt patch from the rt wiki download page. During the rebasing, the following patch collided: Force tick interrupt and get rid of softirq magic(I70131fb85). Collisions have been removed because its logic was found on the source already. Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769 Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'kernel/drivers/net/xen-netback/common.h')
-rw-r--r--kernel/drivers/net/xen-netback/common.h44
1 files changed, 26 insertions, 18 deletions
diff --git a/kernel/drivers/net/xen-netback/common.h b/kernel/drivers/net/xen-netback/common.h
index 8a495b318..0333ab0fd 100644
--- a/kernel/drivers/net/xen-netback/common.h
+++ b/kernel/drivers/net/xen-netback/common.h
@@ -44,6 +44,7 @@
#include <xen/interface/grant_table.h>
#include <xen/grant_table.h>
#include <xen/xenbus.h>
+#include <xen/page.h>
#include <linux/debugfs.h>
typedef unsigned int pending_ring_idx_t;
@@ -64,8 +65,8 @@ struct pending_tx_info {
struct ubuf_info callback_struct;
};
-#define XEN_NETIF_TX_RING_SIZE __CONST_RING_SIZE(xen_netif_tx, PAGE_SIZE)
-#define XEN_NETIF_RX_RING_SIZE __CONST_RING_SIZE(xen_netif_rx, PAGE_SIZE)
+#define XEN_NETIF_TX_RING_SIZE __CONST_RING_SIZE(xen_netif_tx, XEN_PAGE_SIZE)
+#define XEN_NETIF_RX_RING_SIZE __CONST_RING_SIZE(xen_netif_rx, XEN_PAGE_SIZE)
struct xenvif_rx_meta {
int id;
@@ -80,16 +81,21 @@ struct xenvif_rx_meta {
/* Discriminate from any valid pending_idx value. */
#define INVALID_PENDING_IDX 0xFFFF
-#define MAX_BUFFER_OFFSET PAGE_SIZE
+#define MAX_BUFFER_OFFSET XEN_PAGE_SIZE
#define MAX_PENDING_REQS XEN_NETIF_TX_RING_SIZE
+/* The maximum number of frags is derived from the size of a grant (same
+ * as a Xen page size for now).
+ */
+#define MAX_XEN_SKB_FRAGS (65536 / XEN_PAGE_SIZE + 1)
+
/* It's possible for an skb to have a maximal number of frags
* but still be less than MAX_BUFFER_OFFSET in size. Thus the
- * worst-case number of copy operations is MAX_SKB_FRAGS per
+ * worst-case number of copy operations is MAX_XEN_SKB_FRAGS per
* ring slot.
*/
-#define MAX_GRANT_COPY_OPS (MAX_SKB_FRAGS * XEN_NETIF_RX_RING_SIZE)
+#define MAX_GRANT_COPY_OPS (MAX_XEN_SKB_FRAGS * XEN_NETIF_RX_RING_SIZE)
#define NETBACK_INVALID_HANDLE -1
@@ -200,22 +206,27 @@ struct xenvif_queue { /* Per-queue data for xenvif */
struct xenvif_stats stats;
};
-/* Maximum number of Rx slots a to-guest packet may use, including the
- * slot needed for GSO meta-data.
- */
-#define XEN_NETBK_RX_SLOTS_MAX (MAX_SKB_FRAGS + 1)
-
enum state_bit_shift {
/* This bit marks that the vif is connected */
VIF_STATUS_CONNECTED,
};
+struct xenvif_mcast_addr {
+ struct list_head entry;
+ struct rcu_head rcu;
+ u8 addr[6];
+};
+
+#define XEN_NETBK_MCAST_MAX 64
+
struct xenvif {
/* Unique identifier for this interface. */
domid_t domid;
unsigned int handle;
u8 fe_dev_addr[6];
+ struct list_head fe_mcast_addr;
+ unsigned int fe_mcast_count;
/* Frontend feature information. */
int gso_mask;
@@ -224,6 +235,7 @@ struct xenvif {
u8 can_sg:1;
u8 ip_csum:1;
u8 ipv6_csum:1;
+ u8 multicast_control:1;
/* Is this interface disabled? True when backend discovers
* frontend is rogue.
@@ -306,11 +318,6 @@ int xenvif_dealloc_kthread(void *data);
void xenvif_rx_queue_tail(struct xenvif_queue *queue, struct sk_buff *skb);
-/* Determine whether the needed number of slots (req) are available,
- * and set req_event if not.
- */
-bool xenvif_rx_ring_slots_available(struct xenvif_queue *queue, int needed);
-
void xenvif_carrier_on(struct xenvif *vif);
/* Callback from stack when TX packet can be released */
@@ -325,9 +332,6 @@ static inline pending_ring_idx_t nr_pending_reqs(struct xenvif_queue *queue)
queue->pending_prod + queue->pending_cons;
}
-/* Callback from stack when TX packet can be released */
-void xenvif_zerocopy_callback(struct ubuf_info *ubuf, bool zerocopy_success);
-
irqreturn_t xenvif_interrupt(int irq, void *dev_id);
extern bool separate_tx_rx_irq;
@@ -344,4 +348,8 @@ void xenvif_skb_zerocopy_prepare(struct xenvif_queue *queue,
struct sk_buff *skb);
void xenvif_skb_zerocopy_complete(struct xenvif_queue *queue);
+/* Multicast control */
+bool xenvif_mcast_match(struct xenvif *vif, const u8 *addr);
+void xenvif_mcast_addr_list_free(struct xenvif *vif);
+
#endif /* __XEN_NETBACK__COMMON_H__ */