net: ipa: replenish after delivering payload

Replenishing is now solely driven by whether transactions are
available for a channel, and it doesn't really matter whether
we replenish before or after we deliver received packets to the
network stack.

Replenishing before delivering the payload adds a little latency.
Eliminate that by requesting a replenish after the payload is
delivered.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ipa/ipa_endpoint.c b/drivers/net/ipa/ipa_endpoint.c
index 9d87512..a236edf 100644 (file)
--- a/drivers/net/ipa/ipa_endpoint.c
+++ b/drivers/net/ipa/ipa_endpoint.c
@@ -1341,10 +1341,8 @@ static void ipa_endpoint_rx_complete(struct ipa_endpoint *endpoint,
 {
        struct page *page;
 
-       ipa_endpoint_replenish(endpoint);
-
        if (trans->cancelled)
-               return;
+               goto done;
 
        /* Parse or build a socket buffer using the actual received length */
        page = trans->data;
@@ -1352,6 +1350,8 @@ static void ipa_endpoint_rx_complete(struct ipa_endpoint *endpoint,
                ipa_endpoint_status_parse(endpoint, page, trans->len);
        else if (ipa_endpoint_skb_build(endpoint, page, trans->len))
                trans->data = NULL;     /* Pages have been consumed */
+done:
+       ipa_endpoint_replenish(endpoint);
 }
 
 void ipa_endpoint_trans_complete(struct ipa_endpoint *endpoint,