netdev - [RFC PATCH net-next 4/6 v2] net: Add new tc recirc id skb extension

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Date:   Tue, 29 Jan 2019 10:02:04 +0200
From:   Paul Blakey <paulb@...lanox.com>
To:     Guy Shattah <sguy@...lanox.com>,
        Marcelo Leitner <mleitner@...hat.com>,
        Aaron Conole <aconole@...hat.com>,
        John Hurley <john.hurley@...ronome.com>,
        Simon Horman <simon.horman@...ronome.com>,
        Justin Pettit <jpettit@....org>,
        Gregory Rose <gvrose8192@...il.com>,
        Eelco Chaudron <echaudro@...hat.com>,
        Flavio Leitner <fbl@...hat.com>,
        Florian Westphal <fwestpha@...hat.com>,
        Jiri Pirko <jiri@...nulli.us>, Rashid Khan <rkhan@...hat.com>,
        Sushil Kulkarni <sukulkar@...hat.com>,
        Andy Gospodarek <andrew.gospodarek@...adcom.com>,
        Roi Dayan <roid@...lanox.com>,
        Yossi Kuperman <yossiku@...lanox.com>,
        Or Gerlitz <ogerlitz@...lanox.com>,
        Rony Efraim <ronye@...lanox.com>,
        "davem@...emloft.net" <davem@...emloft.net>, netdev@...r.kernel.org
Cc:     Paul Blakey <paulb@...lanox.com>
Subject: [RFC PATCH net-next 4/6 v2] net: Add new tc recirc id skb extension

This will be used by followup patch to tc act ct to
recirculate the packet after going to the connection tracking module and
share this recirculation from tc to OVS.

Signed-off-by: Paul Blakey <paulb@...lanox.com>
---
 include/linux/skbuff.h | 1 +
 net/core/skbuff.c      | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 95d25b0..02768c7 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -3912,6 +3912,7 @@ enum skb_ext_id {
 #ifdef CONFIG_XFRM
 	SKB_EXT_SEC_PATH,
 #endif
+	SKB_EXT_TC_RECIRC_ID,
 	SKB_EXT_NUM, /* must be last */
 };
 
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index 26d8484..57a2655 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -3911,6 +3911,7 @@ int skb_gro_receive(struct sk_buff *p, struct sk_buff *skb)
 #ifdef CONFIG_XFRM
 	[SKB_EXT_SEC_PATH] = SKB_EXT_CHUNKSIZEOF(struct sec_path),
 #endif
+	[SKB_EXT_TC_RECIRC_ID] = SKB_EXT_CHUNKSIZEOF(uint32_t),
 };
 
 static __always_inline unsigned int skb_ext_total_length(void)
@@ -3922,6 +3923,7 @@ static __always_inline unsigned int skb_ext_total_length(void)
 #ifdef CONFIG_XFRM
 		skb_ext_type_len[SKB_EXT_SEC_PATH] +
 #endif
+		skb_ext_type_len[SKB_EXT_TC_RECIRC_ID] +
 		0;
 }
 
-- 
1.8.3.1