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Date: Mon, 15 Oct 2012 15:33:27 +0200 From: Rodolfo Giometti <giometti@...ux.it> To: netdev@...r.kernel.org Cc: Lennert Buytenhek <buytenh@...tstofly.org>, Rodolfo Giometti <giometti@...ux.it> Subject: [PATCH] net dsa: add TX timestamping support Signed-off-by: Rodolfo Giometti <giometti@...ux.it> --- net/dsa/tag_dsa.c | 8 ++++++++ net/dsa/tag_edsa.c | 8 ++++++++ net/dsa/tag_trailer.c | 8 ++++++++ 3 files changed, 24 insertions(+) diff --git a/net/dsa/tag_dsa.c b/net/dsa/tag_dsa.c index cacce1e..20c2959 100644 --- a/net/dsa/tag_dsa.c +++ b/net/dsa/tag_dsa.c @@ -24,6 +24,14 @@ netdev_tx_t dsa_xmit(struct sk_buff *skb, struct net_device *dev) dev->stats.tx_packets++; dev->stats.tx_bytes += skb->len; + /* We should call skb_tx_timestamp() at bottom of this function, + * just before dev_queue_xmit(), but the skb is going to be + * modified by DSA stack so it is going to be NOT recognized + * by the ptp_filter called into function skb_clone_tx_timestamp() + * [see file linux/net/core/timestamping.c]. + */ + skb_tx_timestamp(skb); + /* * Convert the outermost 802.1q tag to a DSA tag for tagged * packets, or insert a DSA tag between the addresses and diff --git a/net/dsa/tag_edsa.c b/net/dsa/tag_edsa.c index e70c43c..9138bda 100644 --- a/net/dsa/tag_edsa.c +++ b/net/dsa/tag_edsa.c @@ -25,6 +25,14 @@ netdev_tx_t edsa_xmit(struct sk_buff *skb, struct net_device *dev) dev->stats.tx_packets++; dev->stats.tx_bytes += skb->len; + /* We should call skb_tx_timestamp() at bottom of this function, + * just before dev_queue_xmit(), but the skb is going to be + * modified by DSA stack so it is going to be NOT recognized + * by the ptp_filter called into function skb_clone_tx_timestamp() + * [see file linux/net/core/timestamping.c]. + */ + skb_tx_timestamp(skb); + /* * Convert the outermost 802.1q tag to a DSA tag and prepend * a DSA ethertype field is the packet is tagged, or insert diff --git a/net/dsa/tag_trailer.c b/net/dsa/tag_trailer.c index 94bc260..b92cad2 100644 --- a/net/dsa/tag_trailer.c +++ b/net/dsa/tag_trailer.c @@ -24,6 +24,14 @@ netdev_tx_t trailer_xmit(struct sk_buff *skb, struct net_device *dev) dev->stats.tx_packets++; dev->stats.tx_bytes += skb->len; + /* We should call skb_tx_timestamp() at bottom of this function, + * just before dev_queue_xmit(), but the skb is going to be + * modified by DSA stack so it is going to be NOT recognized + * by the ptp_filter called into function skb_clone_tx_timestamp() + * [see file linux/net/core/timestamping.c]. + */ + skb_tx_timestamp(skb); + /* * We have to make sure that the trailer ends up as the very * last 4 bytes of the packet. This means that we have to pad -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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