summaryrefslogtreecommitdiffstats
path: root/drivers
diff options
context:
space:
mode:
authorWei Liu <wei.liu2@citrix.com>2013-03-25 01:08:19 +0000
committerDavid S. Miller <davem@davemloft.net>2013-03-25 12:19:26 -0400
commit7158ff6d0c6aa3724fb51c6c11143d31e166eb1f (patch)
treee10b0210c7dc85adb2b05c6a617405131d89610b /drivers
parente2d617c0ccf658a55552955f07018ecfa0135210 (diff)
xen-netfront: frags -> slots in xennet_get_responses
This function is in fact counting the ring slots required for responses. Separate the concepts of ring slots and skb frags make the code clearer, as now netfront and netback can have different MAX_SKB_FRAGS, slot and frag are not mapped 1:1 any more. Signed-off-by: Wei Liu <wei.liu2@citrix.com> Reviewed-by: David Vrabel <david.vrabel@citrix.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/xen-netfront.c18
1 files changed, 9 insertions, 9 deletions
diff --git a/drivers/net/xen-netfront.c b/drivers/net/xen-netfront.c
index 55276635e69..d9097a78696 100644
--- a/drivers/net/xen-netfront.c
+++ b/drivers/net/xen-netfront.c
@@ -712,7 +712,7 @@ static int xennet_get_responses(struct netfront_info *np,
struct sk_buff *skb = xennet_get_rx_skb(np, cons);
grant_ref_t ref = xennet_get_rx_ref(np, cons);
int max = MAX_SKB_FRAGS + (rx->status <= RX_COPY_THRESHOLD);
- int frags = 1;
+ int slots = 1;
int err = 0;
unsigned long ret;
@@ -756,27 +756,27 @@ next:
if (!(rx->flags & XEN_NETRXF_more_data))
break;
- if (cons + frags == rp) {
+ if (cons + slots == rp) {
if (net_ratelimit())
- dev_warn(dev, "Need more frags\n");
+ dev_warn(dev, "Need more slots\n");
err = -ENOENT;
break;
}
- rx = RING_GET_RESPONSE(&np->rx, cons + frags);
- skb = xennet_get_rx_skb(np, cons + frags);
- ref = xennet_get_rx_ref(np, cons + frags);
- frags++;
+ rx = RING_GET_RESPONSE(&np->rx, cons + slots);
+ skb = xennet_get_rx_skb(np, cons + slots);
+ ref = xennet_get_rx_ref(np, cons + slots);
+ slots++;
}
- if (unlikely(frags > max)) {
+ if (unlikely(slots > max)) {
if (net_ratelimit())
dev_warn(dev, "Too many frags\n");
err = -E2BIG;
}
if (unlikely(err))
- np->rx.rsp_cons = cons + frags;
+ np->rx.rsp_cons = cons + slots;
return err;
}