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| author | Chris Zankel <chris@zankel.net> | 2016-01-21 05:16:13 +0000 |
|---|---|---|
| committer | Chris Zankel <chris@zankel.net> | 2016-01-21 05:16:13 +0000 |
| commit | d1208404dd477c142680437137c9996b95bfd508 (patch) | |
| tree | 0cba53f59f487c0de2b1a0d9fb1b11ae27de96ec /drivers/net/xen-netback/common.h | |
| parent | afaa7c542cc9c4d8a99ba252a8ea5e8bc7c897e2 (diff) | |
| parent | afd2ff9b7e1b367172f18ba7f693dfb62bdcb2dc (diff) | |
| download | talos-op-linux-d1208404dd477c142680437137c9996b95bfd508.tar.gz talos-op-linux-d1208404dd477c142680437137c9996b95bfd508.zip | |
Merge tag 'v4.4'
Linux 4.4
Diffstat (limited to 'drivers/net/xen-netback/common.h')
| -rw-r--r-- | drivers/net/xen-netback/common.h | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/drivers/net/xen-netback/common.h b/drivers/net/xen-netback/common.h index a7bf74727116..0333ab0fd926 100644 --- a/drivers/net/xen-netback/common.h +++ b/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 |
