[PATCH net-next 0/2] Add helper functions to parse netlink msg of ip

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* [PATCH net-next 0/2] Add helper functions to parse netlink msg of ip_tunnel
@ 2022-09-26 13:19 Liu Jian
  2022-09-26 13:19 ` [PATCH net-next 1/2] net: Add helper function to parse netlink msg of ip_tunnel_encap Liu Jian
                   ` (2 more replies)
  0 siblings, 3 replies; 5+ messages in thread
From: Liu Jian @ 2022-09-26 13:19 UTC (permalink / raw)
  To: davem, yoshfuji, dsahern, edumazet, kuba, pabeni, netdev; +Cc: liujian56

Add helper functions to parse netlinkmsg of ip_tunnel

Liu Jian (2):
  net: Add helper function to parse netlink msg of ip_tunnel_encap
  net: Add helper function to parse netlink msg of ip_tunnel_parm

 include/net/ip_tunnels.h | 66 ++++++++++++++++++++++++++++++++++++++++
 net/ipv4/ipip.c          | 62 ++-----------------------------------
 net/ipv6/ip6_tunnel.c    | 37 ++--------------------
 net/ipv6/sit.c           | 65 ++-------------------------------------
 4 files changed, 74 insertions(+), 156 deletions(-)

-- 
2.17.1


^ permalink raw reply	[flat|nested] 5+ messages in thread

* [PATCH net-next 1/2] net: Add helper function to parse netlink msg of ip_tunnel_encap
  2022-09-26 13:19 [PATCH net-next 0/2] Add helper functions to parse netlink msg of ip_tunnel Liu Jian
@ 2022-09-26 13:19 ` Liu Jian
  2022-09-26 13:19 ` [PATCH net-next 2/2] net: Add helper function to parse netlink msg of ip_tunnel_parm Liu Jian
  2022-09-27 14:58 ` [PATCH net-next 0/2] Add helper functions to parse netlink msg of ip_tunnel Jakub Kicinski
  2 siblings, 0 replies; 5+ messages in thread
From: Liu Jian @ 2022-09-26 13:19 UTC (permalink / raw)
  To: davem, yoshfuji, dsahern, edumazet, kuba, pabeni, netdev; +Cc: liujian56

Add ip_tunnel_netlink_encap_parms to parse netlink msg of ip_tunnel_encap.
Reduces duplicate code, no actual functional changes.

Signed-off-by: Liu Jian <liujian56@huawei.com>
---
 include/net/ip_tunnels.h | 34 ++++++++++++++++++++++++++++++++++
 net/ipv4/ipip.c          | 38 ++------------------------------------
 net/ipv6/ip6_tunnel.c    | 37 ++-----------------------------------
 net/ipv6/sit.c           | 38 ++------------------------------------
 4 files changed, 40 insertions(+), 107 deletions(-)

diff --git a/include/net/ip_tunnels.h b/include/net/ip_tunnels.h
index ced80e2f8b58..e8bb8944ce3f 100644
--- a/include/net/ip_tunnels.h
+++ b/include/net/ip_tunnels.h
@@ -302,6 +302,40 @@ int ip_tunnel_newlink(struct net_device *dev, struct nlattr *tb[],
 		      struct ip_tunnel_parm *p, __u32 fwmark);
 void ip_tunnel_setup(struct net_device *dev, unsigned int net_id);
 
+/* This function returns true when ENCAP attributes are present in the nl msg */
+static inline bool ip_tunnel_netlink_encap_parms(struct nlattr *data[],
+						 struct ip_tunnel_encap *encap)
+{
+	bool ret = false;
+
+	memset(encap, 0, sizeof(*encap));
+
+	if (!data)
+		return ret;
+
+	if (data[IFLA_IPTUN_ENCAP_TYPE]) {
+		ret = true;
+		encap->type = nla_get_u16(data[IFLA_IPTUN_ENCAP_TYPE]);
+	}
+
+	if (data[IFLA_IPTUN_ENCAP_FLAGS]) {
+		ret = true;
+		encap->flags = nla_get_u16(data[IFLA_IPTUN_ENCAP_FLAGS]);
+	}
+
+	if (data[IFLA_IPTUN_ENCAP_SPORT]) {
+		ret = true;
+		encap->sport = nla_get_be16(data[IFLA_IPTUN_ENCAP_SPORT]);
+	}
+
+	if (data[IFLA_IPTUN_ENCAP_DPORT]) {
+		ret = true;
+		encap->dport = nla_get_be16(data[IFLA_IPTUN_ENCAP_DPORT]);
+	}
+
+	return ret;
+}
+
 extern const struct header_ops ip_tunnel_header_ops;
 __be16 ip_tunnel_parse_protocol(const struct sk_buff *skb);
 
diff --git a/net/ipv4/ipip.c b/net/ipv4/ipip.c
index 123ea63a04cb..7c64ca06adf3 100644
--- a/net/ipv4/ipip.c
+++ b/net/ipv4/ipip.c
@@ -448,40 +448,6 @@ static void ipip_netlink_parms(struct nlattr *data[],
 		*fwmark = nla_get_u32(data[IFLA_IPTUN_FWMARK]);
 }
 
-/* This function returns true when ENCAP attributes are present in the nl msg */
-static bool ipip_netlink_encap_parms(struct nlattr *data[],
-				     struct ip_tunnel_encap *ipencap)
-{
-	bool ret = false;
-
-	memset(ipencap, 0, sizeof(*ipencap));
-
-	if (!data)
-		return ret;
-
-	if (data[IFLA_IPTUN_ENCAP_TYPE]) {
-		ret = true;
-		ipencap->type = nla_get_u16(data[IFLA_IPTUN_ENCAP_TYPE]);
-	}
-
-	if (data[IFLA_IPTUN_ENCAP_FLAGS]) {
-		ret = true;
-		ipencap->flags = nla_get_u16(data[IFLA_IPTUN_ENCAP_FLAGS]);
-	}
-
-	if (data[IFLA_IPTUN_ENCAP_SPORT]) {
-		ret = true;
-		ipencap->sport = nla_get_be16(data[IFLA_IPTUN_ENCAP_SPORT]);
-	}
-
-	if (data[IFLA_IPTUN_ENCAP_DPORT]) {
-		ret = true;
-		ipencap->dport = nla_get_be16(data[IFLA_IPTUN_ENCAP_DPORT]);
-	}
-
-	return ret;
-}
-
 static int ipip_newlink(struct net *src_net, struct net_device *dev,
 			struct nlattr *tb[], struct nlattr *data[],
 			struct netlink_ext_ack *extack)
@@ -491,7 +457,7 @@ static int ipip_newlink(struct net *src_net, struct net_device *dev,
 	struct ip_tunnel_encap ipencap;
 	__u32 fwmark = 0;
 
-	if (ipip_netlink_encap_parms(data, &ipencap)) {
+	if (ip_tunnel_netlink_encap_parms(data, &ipencap)) {
 		int err = ip_tunnel_encap_setup(t, &ipencap);
 
 		if (err < 0)
@@ -512,7 +478,7 @@ static int ipip_changelink(struct net_device *dev, struct nlattr *tb[],
 	bool collect_md;
 	__u32 fwmark = t->fwmark;
 
-	if (ipip_netlink_encap_parms(data, &ipencap)) {
+	if (ip_tunnel_netlink_encap_parms(data, &ipencap)) {
 		int err = ip_tunnel_encap_setup(t, &ipencap);
 
 		if (err < 0)
diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c
index 9e97f3b4c7e8..cc5d5e75b658 100644
--- a/net/ipv6/ip6_tunnel.c
+++ b/net/ipv6/ip6_tunnel.c
@@ -1988,39 +1988,6 @@ static void ip6_tnl_netlink_parms(struct nlattr *data[],
 		parms->fwmark = nla_get_u32(data[IFLA_IPTUN_FWMARK]);
 }
 
-static bool ip6_tnl_netlink_encap_parms(struct nlattr *data[],
-					struct ip_tunnel_encap *ipencap)
-{
-	bool ret = false;
-
-	memset(ipencap, 0, sizeof(*ipencap));
-
-	if (!data)
-		return ret;
-
-	if (data[IFLA_IPTUN_ENCAP_TYPE]) {
-		ret = true;
-		ipencap->type = nla_get_u16(data[IFLA_IPTUN_ENCAP_TYPE]);
-	}
-
-	if (data[IFLA_IPTUN_ENCAP_FLAGS]) {
-		ret = true;
-		ipencap->flags = nla_get_u16(data[IFLA_IPTUN_ENCAP_FLAGS]);
-	}
-
-	if (data[IFLA_IPTUN_ENCAP_SPORT]) {
-		ret = true;
-		ipencap->sport = nla_get_be16(data[IFLA_IPTUN_ENCAP_SPORT]);
-	}
-
-	if (data[IFLA_IPTUN_ENCAP_DPORT]) {
-		ret = true;
-		ipencap->dport = nla_get_be16(data[IFLA_IPTUN_ENCAP_DPORT]);
-	}
-
-	return ret;
-}
-
 static int ip6_tnl_newlink(struct net *src_net, struct net_device *dev,
 			   struct nlattr *tb[], struct nlattr *data[],
 			   struct netlink_ext_ack *extack)
@@ -2033,7 +2000,7 @@ static int ip6_tnl_newlink(struct net *src_net, struct net_device *dev,
 
 	nt = netdev_priv(dev);
 
-	if (ip6_tnl_netlink_encap_parms(data, &ipencap)) {
+	if (ip_tunnel_netlink_encap_parms(data, &ipencap)) {
 		err = ip6_tnl_encap_setup(nt, &ipencap);
 		if (err < 0)
 			return err;
@@ -2070,7 +2037,7 @@ static int ip6_tnl_changelink(struct net_device *dev, struct nlattr *tb[],
 	if (dev == ip6n->fb_tnl_dev)
 		return -EINVAL;
 
-	if (ip6_tnl_netlink_encap_parms(data, &ipencap)) {
+	if (ip_tunnel_netlink_encap_parms(data, &ipencap)) {
 		int err = ip6_tnl_encap_setup(t, &ipencap);
 
 		if (err < 0)
diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
index 98f1cf40746f..a8a258f672fa 100644
--- a/net/ipv6/sit.c
+++ b/net/ipv6/sit.c
@@ -1534,40 +1534,6 @@ static void ipip6_netlink_parms(struct nlattr *data[],
 		*fwmark = nla_get_u32(data[IFLA_IPTUN_FWMARK]);
 }
 
-/* This function returns true when ENCAP attributes are present in the nl msg */
-static bool ipip6_netlink_encap_parms(struct nlattr *data[],
-				      struct ip_tunnel_encap *ipencap)
-{
-	bool ret = false;
-
-	memset(ipencap, 0, sizeof(*ipencap));
-
-	if (!data)
-		return ret;
-
-	if (data[IFLA_IPTUN_ENCAP_TYPE]) {
-		ret = true;
-		ipencap->type = nla_get_u16(data[IFLA_IPTUN_ENCAP_TYPE]);
-	}
-
-	if (data[IFLA_IPTUN_ENCAP_FLAGS]) {
-		ret = true;
-		ipencap->flags = nla_get_u16(data[IFLA_IPTUN_ENCAP_FLAGS]);
-	}
-
-	if (data[IFLA_IPTUN_ENCAP_SPORT]) {
-		ret = true;
-		ipencap->sport = nla_get_be16(data[IFLA_IPTUN_ENCAP_SPORT]);
-	}
-
-	if (data[IFLA_IPTUN_ENCAP_DPORT]) {
-		ret = true;
-		ipencap->dport = nla_get_be16(data[IFLA_IPTUN_ENCAP_DPORT]);
-	}
-
-	return ret;
-}
-
 #ifdef CONFIG_IPV6_SIT_6RD
 /* This function returns true when 6RD attributes are present in the nl msg */
 static bool ipip6_netlink_6rd_parms(struct nlattr *data[],
@@ -1619,7 +1585,7 @@ static int ipip6_newlink(struct net *src_net, struct net_device *dev,
 
 	nt = netdev_priv(dev);
 
-	if (ipip6_netlink_encap_parms(data, &ipencap)) {
+	if (ip_tunnel_netlink_encap_parms(data, &ipencap)) {
 		err = ip_tunnel_encap_setup(nt, &ipencap);
 		if (err < 0)
 			return err;
@@ -1671,7 +1637,7 @@ static int ipip6_changelink(struct net_device *dev, struct nlattr *tb[],
 	if (dev == sitn->fb_tunnel_dev)
 		return -EINVAL;
 
-	if (ipip6_netlink_encap_parms(data, &ipencap)) {
+	if (ip_tunnel_netlink_encap_parms(data, &ipencap)) {
 		err = ip_tunnel_encap_setup(t, &ipencap);
 		if (err < 0)
 			return err;
-- 
2.17.1


^ permalink raw reply related	[flat|nested] 5+ messages in thread

* [PATCH net-next 2/2] net: Add helper function to parse netlink msg of ip_tunnel_parm
  2022-09-26 13:19 [PATCH net-next 0/2] Add helper functions to parse netlink msg of ip_tunnel Liu Jian
  2022-09-26 13:19 ` [PATCH net-next 1/2] net: Add helper function to parse netlink msg of ip_tunnel_encap Liu Jian
@ 2022-09-26 13:19 ` Liu Jian
  2022-09-27 14:58 ` [PATCH net-next 0/2] Add helper functions to parse netlink msg of ip_tunnel Jakub Kicinski
  2 siblings, 0 replies; 5+ messages in thread
From: Liu Jian @ 2022-09-26 13:19 UTC (permalink / raw)
  To: davem, yoshfuji, dsahern, edumazet, kuba, pabeni, netdev; +Cc: liujian56

Add ip_tunnel_netlink_parms to parse netlink msg of ip_tunnel_parm.
Reduces duplicate code, no actual functional changes.

Signed-off-by: Liu Jian <liujian56@huawei.com>
---
 include/net/ip_tunnels.h | 32 ++++++++++++++++++++++++++++++++
 net/ipv4/ipip.c          | 24 +-----------------------
 net/ipv6/sit.c           | 27 +--------------------------
 3 files changed, 34 insertions(+), 49 deletions(-)

diff --git a/include/net/ip_tunnels.h b/include/net/ip_tunnels.h
index e8bb8944ce3f..ea047de92e83 100644
--- a/include/net/ip_tunnels.h
+++ b/include/net/ip_tunnels.h
@@ -17,6 +17,7 @@
 #include <net/rtnetlink.h>
 #include <net/lwtunnel.h>
 #include <net/dst_cache.h>
+#include <net/ip.h>
 
 #if IS_ENABLED(CONFIG_IPV6)
 #include <net/ipv6.h>
@@ -336,6 +337,37 @@ static inline bool ip_tunnel_netlink_encap_parms(struct nlattr *data[],
 	return ret;
 }
 
+static inline void ip_tunnel_netlink_parms(struct nlattr *data[],
+					   struct ip_tunnel_parm *parms)
+{
+	if (data[IFLA_IPTUN_LINK])
+		parms->link = nla_get_u32(data[IFLA_IPTUN_LINK]);
+
+	if (data[IFLA_IPTUN_LOCAL])
+		parms->iph.saddr = nla_get_be32(data[IFLA_IPTUN_LOCAL]);
+
+	if (data[IFLA_IPTUN_REMOTE])
+		parms->iph.daddr = nla_get_be32(data[IFLA_IPTUN_REMOTE]);
+
+	if (data[IFLA_IPTUN_TTL]) {
+		parms->iph.ttl = nla_get_u8(data[IFLA_IPTUN_TTL]);
+		if (parms->iph.ttl)
+			parms->iph.frag_off = htons(IP_DF);
+	}
+
+	if (data[IFLA_IPTUN_TOS])
+		parms->iph.tos = nla_get_u8(data[IFLA_IPTUN_TOS]);
+
+	if (!data[IFLA_IPTUN_PMTUDISC] || nla_get_u8(data[IFLA_IPTUN_PMTUDISC]))
+		parms->iph.frag_off = htons(IP_DF);
+
+	if (data[IFLA_IPTUN_FLAGS])
+		parms->i_flags = nla_get_be16(data[IFLA_IPTUN_FLAGS]);
+
+	if (data[IFLA_IPTUN_PROTO])
+		parms->iph.protocol = nla_get_u8(data[IFLA_IPTUN_PROTO]);
+}
+
 extern const struct header_ops ip_tunnel_header_ops;
 __be16 ip_tunnel_parse_protocol(const struct sk_buff *skb);
 
diff --git a/net/ipv4/ipip.c b/net/ipv4/ipip.c
index 7c64ca06adf3..180f9daf5bec 100644
--- a/net/ipv4/ipip.c
+++ b/net/ipv4/ipip.c
@@ -417,29 +417,7 @@ static void ipip_netlink_parms(struct nlattr *data[],
 	if (!data)
 		return;
 
-	if (data[IFLA_IPTUN_LINK])
-		parms->link = nla_get_u32(data[IFLA_IPTUN_LINK]);
-
-	if (data[IFLA_IPTUN_LOCAL])
-		parms->iph.saddr = nla_get_in_addr(data[IFLA_IPTUN_LOCAL]);
-
-	if (data[IFLA_IPTUN_REMOTE])
-		parms->iph.daddr = nla_get_in_addr(data[IFLA_IPTUN_REMOTE]);
-
-	if (data[IFLA_IPTUN_TTL]) {
-		parms->iph.ttl = nla_get_u8(data[IFLA_IPTUN_TTL]);
-		if (parms->iph.ttl)
-			parms->iph.frag_off = htons(IP_DF);
-	}
-
-	if (data[IFLA_IPTUN_TOS])
-		parms->iph.tos = nla_get_u8(data[IFLA_IPTUN_TOS]);
-
-	if (data[IFLA_IPTUN_PROTO])
-		parms->iph.protocol = nla_get_u8(data[IFLA_IPTUN_PROTO]);
-
-	if (!data[IFLA_IPTUN_PMTUDISC] || nla_get_u8(data[IFLA_IPTUN_PMTUDISC]))
-		parms->iph.frag_off = htons(IP_DF);
+	ip_tunnel_netlink_parms(data, parms);
 
 	if (data[IFLA_IPTUN_COLLECT_METADATA])
 		*collect_md = true;
diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
index a8a258f672fa..d27683e3fc97 100644
--- a/net/ipv6/sit.c
+++ b/net/ipv6/sit.c
@@ -1503,32 +1503,7 @@ static void ipip6_netlink_parms(struct nlattr *data[],
 	if (!data)
 		return;
 
-	if (data[IFLA_IPTUN_LINK])
-		parms->link = nla_get_u32(data[IFLA_IPTUN_LINK]);
-
-	if (data[IFLA_IPTUN_LOCAL])
-		parms->iph.saddr = nla_get_be32(data[IFLA_IPTUN_LOCAL]);
-
-	if (data[IFLA_IPTUN_REMOTE])
-		parms->iph.daddr = nla_get_be32(data[IFLA_IPTUN_REMOTE]);
-
-	if (data[IFLA_IPTUN_TTL]) {
-		parms->iph.ttl = nla_get_u8(data[IFLA_IPTUN_TTL]);
-		if (parms->iph.ttl)
-			parms->iph.frag_off = htons(IP_DF);
-	}
-
-	if (data[IFLA_IPTUN_TOS])
-		parms->iph.tos = nla_get_u8(data[IFLA_IPTUN_TOS]);
-
-	if (!data[IFLA_IPTUN_PMTUDISC] || nla_get_u8(data[IFLA_IPTUN_PMTUDISC]))
-		parms->iph.frag_off = htons(IP_DF);
-
-	if (data[IFLA_IPTUN_FLAGS])
-		parms->i_flags = nla_get_be16(data[IFLA_IPTUN_FLAGS]);
-
-	if (data[IFLA_IPTUN_PROTO])
-		parms->iph.protocol = nla_get_u8(data[IFLA_IPTUN_PROTO]);
+	ip_tunnel_netlink_parms(data, parms);
 
 	if (data[IFLA_IPTUN_FWMARK])
 		*fwmark = nla_get_u32(data[IFLA_IPTUN_FWMARK]);
-- 
2.17.1


^ permalink raw reply related	[flat|nested] 5+ messages in thread

* Re: [PATCH net-next 0/2] Add helper functions to parse netlink msg of ip_tunnel
  2022-09-26 13:19 [PATCH net-next 0/2] Add helper functions to parse netlink msg of ip_tunnel Liu Jian
  2022-09-26 13:19 ` [PATCH net-next 1/2] net: Add helper function to parse netlink msg of ip_tunnel_encap Liu Jian
  2022-09-26 13:19 ` [PATCH net-next 2/2] net: Add helper function to parse netlink msg of ip_tunnel_parm Liu Jian
@ 2022-09-27 14:58 ` Jakub Kicinski
  2022-09-28  3:34   ` liujian (CE)
  2 siblings, 1 reply; 5+ messages in thread
From: Jakub Kicinski @ 2022-09-27 14:58 UTC (permalink / raw)
  To: Liu Jian; +Cc: davem, yoshfuji, dsahern, edumazet, pabeni, netdev

On Mon, 26 Sep 2022 21:19:42 +0800 Liu Jian wrote:
> Add helper functions to parse netlinkmsg of ip_tunnel
> 
> Liu Jian (2):
>   net: Add helper function to parse netlink msg of ip_tunnel_encap
>   net: Add helper function to parse netlink msg of ip_tunnel_parm
> 
>  include/net/ip_tunnels.h | 66 ++++++++++++++++++++++++++++++++++++++++
>  net/ipv4/ipip.c          | 62 ++-----------------------------------
>  net/ipv6/ip6_tunnel.c    | 37 ++--------------------
>  net/ipv6/sit.c           | 65 ++-------------------------------------

Do they need to be in a header file? Could you put them in
net/ipv4/ip_tunnel.c or net/ipv4/ip_tunnel_core.c instead?

^ permalink raw reply	[flat|nested] 5+ messages in thread

* RE: [PATCH net-next 0/2] Add helper functions to parse netlink msg of ip_tunnel
  2022-09-27 14:58 ` [PATCH net-next 0/2] Add helper functions to parse netlink msg of ip_tunnel Jakub Kicinski
@ 2022-09-28  3:34   ` liujian (CE)
  0 siblings, 0 replies; 5+ messages in thread
From: liujian (CE) @ 2022-09-28  3:34 UTC (permalink / raw)
  To: Jakub Kicinski
  Cc: davem@davemloft.net, yoshfuji@linux-ipv6.org, dsahern@kernel.org,
	edumazet@google.com, pabeni@redhat.com, netdev@vger.kernel.org



> -----Original Message-----
> From: Jakub Kicinski [mailto:kuba@kernel.org]
> Sent: Tuesday, September 27, 2022 10:59 PM
> To: liujian (CE) <liujian56@huawei.com>
> Cc: davem@davemloft.net; yoshfuji@linux-ipv6.org; dsahern@kernel.org;
> edumazet@google.com; pabeni@redhat.com; netdev@vger.kernel.org
> Subject: Re: [PATCH net-next 0/2] Add helper functions to parse netlink msg
> of ip_tunnel
> 
> On Mon, 26 Sep 2022 21:19:42 +0800 Liu Jian wrote:
> > Add helper functions to parse netlinkmsg of ip_tunnel
> >
> > Liu Jian (2):
> >   net: Add helper function to parse netlink msg of ip_tunnel_encap
> >   net: Add helper function to parse netlink msg of ip_tunnel_parm
> >
> >  include/net/ip_tunnels.h | 66
> ++++++++++++++++++++++++++++++++++++++++
> >  net/ipv4/ipip.c          | 62 ++-----------------------------------
> >  net/ipv6/ip6_tunnel.c    | 37 ++--------------------
> >  net/ipv6/sit.c           | 65 ++-------------------------------------
> 
> Do they need to be in a header file? Could you put them in
> net/ipv4/ip_tunnel.c or net/ipv4/ip_tunnel_core.c instead?
The v2 version has been sent. Thanks for your review.

^ permalink raw reply	[flat|nested] 5+ messages in thread

end of thread, other threads:[~2022-09-28  3:34 UTC | newest]

Thread overview: 5+ messages (download: mbox.gz follow: Atom feed
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2022-09-26 13:19 [PATCH net-next 0/2] Add helper functions to parse netlink msg of ip_tunnel Liu Jian
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2022-09-26 13:19 ` [PATCH net-next 2/2] net: Add helper function to parse netlink msg of ip_tunnel_parm Liu Jian
2022-09-27 14:58 ` [PATCH net-next 0/2] Add helper functions to parse netlink msg of ip_tunnel Jakub Kicinski
2022-09-28  3:34   ` liujian (CE)

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