diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/xen-netback/common.h | 8 | ||||
| -rw-r--r-- | drivers/net/xen-netback/interface.c | 3 | ||||
| -rw-r--r-- | drivers/net/xen-netback/netback.c | 13 |
3 files changed, 4 insertions, 20 deletions
diff --git a/drivers/net/xen-netback/common.h b/drivers/net/xen-netback/common.h index 0355f8767e3..89b2d429c44 100644 --- a/drivers/net/xen-netback/common.h +++ b/drivers/net/xen-netback/common.h @@ -81,7 +81,7 @@ struct xenvif_rx_meta { #define MAX_BUFFER_OFFSET PAGE_SIZE -#define MAX_PENDING_REQS 256 +#define MAX_PENDING_REQS XEN_NETIF_TX_RING_SIZE /* 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 @@ -251,12 +251,6 @@ static inline pending_ring_idx_t nr_pending_reqs(struct xenvif *vif) vif->pending_prod + vif->pending_cons; } -static inline bool xenvif_tx_pending_slots_available(struct xenvif *vif) -{ - return nr_pending_reqs(vif) + XEN_NETBK_LEGACY_SLOTS_MAX - < MAX_PENDING_REQS; -} - /* Callback from stack when TX packet can be released */ void xenvif_zerocopy_callback(struct ubuf_info *ubuf, bool zerocopy_success); diff --git a/drivers/net/xen-netback/interface.c b/drivers/net/xen-netback/interface.c index 23bb2f4b18f..e71fb1ac5c4 100644 --- a/drivers/net/xen-netback/interface.c +++ b/drivers/net/xen-netback/interface.c @@ -88,8 +88,7 @@ static int xenvif_poll(struct napi_struct *napi, int budget) local_irq_save(flags); RING_FINAL_CHECK_FOR_REQUESTS(&vif->tx, more_to_do); - if (!(more_to_do && - xenvif_tx_pending_slots_available(vif))) + if (!more_to_do) __napi_complete(napi); local_irq_restore(flags); diff --git a/drivers/net/xen-netback/netback.c b/drivers/net/xen-netback/netback.c index 1e462872477..5d2dd1d5417 100644 --- a/drivers/net/xen-netback/netback.c +++ b/drivers/net/xen-netback/netback.c @@ -1167,8 +1167,7 @@ static unsigned xenvif_tx_build_gops(struct xenvif *vif, int budget) struct sk_buff *skb; int ret; - while (xenvif_tx_pending_slots_available(vif) && - (skb_queue_len(&vif->tx_queue) < budget)) { + while (skb_queue_len(&vif->tx_queue) < budget) { struct xen_netif_tx_request txreq; struct xen_netif_tx_request txfrags[XEN_NETBK_LEGACY_SLOTS_MAX]; struct xen_netif_extra_info extras[XEN_NETIF_EXTRA_TYPE_MAX-1]; @@ -1508,13 +1507,6 @@ void xenvif_zerocopy_callback(struct ubuf_info *ubuf, bool zerocopy_success) wake_up(&vif->dealloc_wq); spin_unlock_irqrestore(&vif->callback_lock, flags); - if (RING_HAS_UNCONSUMED_REQUESTS(&vif->tx) && - xenvif_tx_pending_slots_available(vif)) { - local_bh_disable(); - napi_schedule(&vif->napi); - local_bh_enable(); - } - if (likely(zerocopy_success)) vif->tx_zerocopy_success++; else @@ -1706,8 +1698,7 @@ static inline int rx_work_todo(struct xenvif *vif) static inline int tx_work_todo(struct xenvif *vif) { - if (likely(RING_HAS_UNCONSUMED_REQUESTS(&vif->tx)) && - xenvif_tx_pending_slots_available(vif)) + if (likely(RING_HAS_UNCONSUMED_REQUESTS(&vif->tx))) return 1; return 0; |