Hi Ezequiel,

On 03/11/2017 03:42 PM, Ezequiel Lara Gomez wrote:
Also, cleanup some warnings from timestamping code.

in fact you're doing three different things here:

1. introduce tx timestamping
2. silently change an include: <asm/io.h> -> <linux/io.h>
3. fix some whitespace and empty line issues

You'd better provide one patch for 1 & 2 and explain why 2 is needed.

Regards,
Oliver


This enables testing of SO_TIMESTAMPING options by targetting localhost
addresses.

Tested on qemu using txtimestamping.c from the kernel selftests.

Signed-off-by: Ezequiel Lara Gomez <ezego...@amazon.com>
---
 drivers/net/dummy.c    |  1 +
 drivers/net/loopback.c | 14 +++++++-------
 2 files changed, 8 insertions(+), 7 deletions(-)

diff --git a/drivers/net/dummy.c b/drivers/net/dummy.c
index 2c80611..32fdc00 100644
--- a/drivers/net/dummy.c
+++ b/drivers/net/dummy.c
@@ -125,6 +125,7 @@ static netdev_tx_t dummy_xmit(struct sk_buff *skb, struct 
net_device *dev)
        dstats->tx_bytes += skb->len;
        u64_stats_update_end(&dstats->syncp);

+       skb_tx_timestamp(skb);
        dev_kfree_skb(skb);
        return NETDEV_TX_OK;
 }
diff --git a/drivers/net/loopback.c b/drivers/net/loopback.c
index b23b719..8bcf479 100644
--- a/drivers/net/loopback.c
+++ b/drivers/net/loopback.c
@@ -13,7 +13,7 @@
  *
  *             Alan Cox        :       Fixed oddments for NET3.014
  *             Alan Cox        :       Rejig for NET3.029 snap #3
- *             Alan Cox        :       Fixed NET3.029 bugs and sped up
+ *             Alan Cox        :       Fixed NET3.029 bugs and sped up
  *             Larry McVoy     :       Tiny tweak to double performance
  *             Alan Cox        :       Backed out LMV's tweak - the linux mm
  *                                     can't take it...
@@ -41,7 +41,7 @@
 #include <linux/in.h>

 #include <linux/uaccess.h>
-#include <asm/io.h>
+#include <linux/io.h>

 #include <linux/inet.h>
 #include <linux/netdevice.h>
@@ -74,6 +74,7 @@ static netdev_tx_t loopback_xmit(struct sk_buff *skb,
        struct pcpu_lstats *lb_stats;
        int len;

+       skb_tx_timestamp(skb);
        skb_orphan(skb);

        /* Before queueing this packet to netif_rx(),
@@ -149,8 +150,8 @@ static void loopback_dev_free(struct net_device *dev)
 }

 static const struct net_device_ops loopback_ops = {
-       .ndo_init      = loopback_dev_init,
-       .ndo_start_xmit= loopback_xmit,
+       .ndo_init        = loopback_dev_init,
+       .ndo_start_xmit  = loopback_xmit,
        .ndo_get_stats64 = loopback_get_stats64,
        .ndo_set_mac_address = eth_mac_addr,
 };
@@ -170,7 +171,7 @@ static void loopback_setup(struct net_device *dev)
        dev->priv_flags              |= IFF_LIVE_ADDR_CHANGE | IFF_NO_QUEUE;
        netif_keep_dst(dev);
        dev->hw_features     = NETIF_F_GSO_SOFTWARE;
-       dev->features                = NETIF_F_SG | NETIF_F_FRAGLIST
+       dev->features                = NETIF_F_SG | NETIF_F_FRAGLIST
                | NETIF_F_GSO_SOFTWARE
                | NETIF_F_HW_CSUM
                | NETIF_F_RXCSUM
@@ -206,7 +207,6 @@ static __net_init int loopback_net_init(struct net *net)
        net->loopback_dev = dev;
        return 0;

-
 out_free_netdev:
        free_netdev(dev);
 out:
@@ -217,5 +217,5 @@ static __net_init int loopback_net_init(struct net *net)

 /* Registered in net/core/dev.c */
 struct pernet_operations __net_initdata loopback_net_ops = {
-       .init = loopback_net_init,
+       .init = loopback_net_init,
 };

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