diff mbox series

[v2,iproute] bridge: dump mcast querier state

Message ID 20241030084622.4141001-1-f.pfitzner@pengutronix.de (mailing list archive)
State Superseded
Headers show
Series [v2,iproute] bridge: dump mcast querier state | expand

Checks

Context Check Description
netdev/tree_selection success Not a local patch

Commit Message

Fabian Pfitzner Oct. 30, 2024, 8:46 a.m. UTC
Kernel support for dumping the multicast querier state was added in this
commit [1]. As some people might be interested to get this information
from userspace, this commit implements the necessary changes to show it
via

ip -d link show [dev]

The querier state shows the following information for IPv4 and IPv6
respectively:

1) The ip address of the current querier in the network. This could be
   ourselves or an external querier.
2) The port on which the querier was seen
3) Querier timeout in seconds

[1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c7fa1d9b1fb179375e889ff076a1566ecc997bfc

Signed-off-by: Fabian Pfitzner <f.pfitzner@pengutronix.de>
---

v1->v2: refactor code

 ip/iplink_bridge.c | 47 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 47 insertions(+)

Comments

Stephen Hemminger Oct. 30, 2024, 3:23 p.m. UTC | #1
On Wed, 30 Oct 2024 09:46:23 +0100
Fabian Pfitzner <f.pfitzner@pengutronix.de> wrote:

> Kernel support for dumping the multicast querier state was added in this
> commit [1]. As some people might be interested to get this information
> from userspace, this commit implements the necessary changes to show it
> via
> 
> ip -d link show [dev]
> 
> The querier state shows the following information for IPv4 and IPv6
> respectively:
> 
> 1) The ip address of the current querier in the network. This could be
>    ourselves or an external querier.
> 2) The port on which the querier was seen
> 3) Querier timeout in seconds
> 
> [1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c7fa1d9b1fb179375e889ff076a1566ecc997bfc
> 
> Signed-off-by: Fabian Pfitzner <f.pfitzner@pengutronix.de>
> ---
> 
> v1->v2: refactor code
> 
>  ip/iplink_bridge.c | 47 ++++++++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 47 insertions(+)
> 
> diff --git a/ip/iplink_bridge.c b/ip/iplink_bridge.c
> index f01ffe15..f74436d3 100644
> --- a/ip/iplink_bridge.c
> +++ b/ip/iplink_bridge.c
> @@ -661,6 +661,53 @@ static void bridge_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[])
>  			   "mcast_querier %u ",
>  			   rta_getattr_u8(tb[IFLA_BR_MCAST_QUERIER]));
>  
> +	if (tb[IFLA_BR_MCAST_QUERIER_STATE]) {
> +		struct rtattr *bqtb[BRIDGE_QUERIER_MAX + 1];
> +		SPRINT_BUF(other_time);
> +
> +		parse_rtattr_nested(bqtb, BRIDGE_QUERIER_MAX, tb[IFLA_BR_MCAST_QUERIER_STATE]);
> +		memset(other_time, 0, sizeof(other_time));
> +
> +		open_json_object("mcast_querier_state_ipv4");
> +		if (bqtb[BRIDGE_QUERIER_IP_ADDRESS])
> +			print_string(PRINT_ANY,
> +				"mcast_querier_ipv4_addr",
> +				"mcast_querier_ipv4_addr %s ",
> +				format_host_rta(AF_INET, bqtb[BRIDGE_QUERIER_IP_ADDRESS]))

Would be good to use print_color_string here.
Nikolay Aleksandrov Oct. 30, 2024, 3:29 p.m. UTC | #2
On 30/10/2024 10:46, Fabian Pfitzner wrote:
> Kernel support for dumping the multicast querier state was added in this
> commit [1]. As some people might be interested to get this information
> from userspace, this commit implements the necessary changes to show it
> via
> 
> ip -d link show [dev]
> 
> The querier state shows the following information for IPv4 and IPv6
> respectively:
> 
> 1) The ip address of the current querier in the network. This could be
>    ourselves or an external querier.
> 2) The port on which the querier was seen
> 3) Querier timeout in seconds
> 
> [1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c7fa1d9b1fb179375e889ff076a1566ecc997bfc
> 
> Signed-off-by: Fabian Pfitzner <f.pfitzner@pengutronix.de>
> ---
> 
> v1->v2: refactor code
> 
>  ip/iplink_bridge.c | 47 ++++++++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 47 insertions(+)
> 

For the second time(!), please CC maintainers because it's very easy to
miss a patch. In addition to maintainers, please CC reviewers of previous
versions as well.

Thank you,
 Nik
Fabian Pfitzner Oct. 30, 2024, 10:10 p.m. UTC | #3
> For the second time(!), please CC maintainers because it's very easy to
> miss a patch. In addition to maintainers, please CC reviewers of previous
> versions as well.
Could you please tell me at which mail addresses I should send the patch?
You said that I should send it to "the bridge maintainers" as well, so I 
put "bridge@lists.linux-foundation.org" into the CC this time.

On 10/30/24 4:29 PM, Nikolay Aleksandrov wrote:
> On 30/10/2024 10:46, Fabian Pfitzner wrote:
>> Kernel support for dumping the multicast querier state was added in this
>> commit [1]. As some people might be interested to get this information
>> from userspace, this commit implements the necessary changes to show it
>> via
>>
>> ip -d link show [dev]
>>
>> The querier state shows the following information for IPv4 and IPv6
>> respectively:
>>
>> 1) The ip address of the current querier in the network. This could be
>>     ourselves or an external querier.
>> 2) The port on which the querier was seen
>> 3) Querier timeout in seconds
>>
>> [1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c7fa1d9b1fb179375e889ff076a1566ecc997bfc
>>
>> Signed-off-by: Fabian Pfitzner <f.pfitzner@pengutronix.de>
>> ---
>>
>> v1->v2: refactor code
>>
>>   ip/iplink_bridge.c | 47 ++++++++++++++++++++++++++++++++++++++++++++++
>>   1 file changed, 47 insertions(+)
>>
> For the second time(!), please CC maintainers because it's very easy to
> miss a patch. In addition to maintainers, please CC reviewers of previous
> versions as well.
>
> Thank you,
>   Nik
>
>
>
Nikolay Aleksandrov Oct. 31, 2024, 8:44 a.m. UTC | #4
On 31/10/2024 00:10, Fabian Pfitzner wrote:
>> For the second time(!), please CC maintainers because it's very easy to
>> miss a patch. In addition to maintainers, please CC reviewers of previous
>> versions as well.
> Could you please tell me at which mail addresses I should send the patch?
> You said that I should send it to "the bridge maintainers" as well, so I put "bridge@lists.linux-foundation.org" into the CC this time.
> 

from iproute2/MAINTAINERS file:
 Ethernet Bridging - bridge
 M: Roopa Prabhu <roopa@nvidia.com>
 M: Nikolay Aleksandrov <razor@blackwall.org>
 L: bridge@lists.linux-foundation.org (moderated for non-subscribers)
 F: bridge/*

Unrelated - I just noticed we have to add a few more F: lines there, I'll send a patch.

In addition to maintainers, please always add reviewers of previous patch versions.

Cheers,
 Nik

> On 10/30/24 4:29 PM, Nikolay Aleksandrov wrote:
>> On 30/10/2024 10:46, Fabian Pfitzner wrote:
>>> Kernel support for dumping the multicast querier state was added in this
>>> commit [1]. As some people might be interested to get this information
>>> from userspace, this commit implements the necessary changes to show it
>>> via
>>>
>>> ip -d link show [dev]
>>>
>>> The querier state shows the following information for IPv4 and IPv6
>>> respectively:
>>>
>>> 1) The ip address of the current querier in the network. This could be
>>>     ourselves or an external querier.
>>> 2) The port on which the querier was seen
>>> 3) Querier timeout in seconds
>>>
>>> [1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c7fa1d9b1fb179375e889ff076a1566ecc997bfc
>>>
>>> Signed-off-by: Fabian Pfitzner <f.pfitzner@pengutronix.de>
>>> ---
>>>
>>> v1->v2: refactor code
>>>
>>>   ip/iplink_bridge.c | 47 ++++++++++++++++++++++++++++++++++++++++++++++
>>>   1 file changed, 47 insertions(+)
>>>
>> For the second time(!), please CC maintainers because it's very easy to
>> miss a patch. In addition to maintainers, please CC reviewers of previous
>> versions as well.
>>
>> Thank you,
>>   Nik
>>
>>
>>
diff mbox series

Patch

diff --git a/ip/iplink_bridge.c b/ip/iplink_bridge.c
index f01ffe15..f74436d3 100644
--- a/ip/iplink_bridge.c
+++ b/ip/iplink_bridge.c
@@ -661,6 +661,53 @@  static void bridge_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[])
 			   "mcast_querier %u ",
 			   rta_getattr_u8(tb[IFLA_BR_MCAST_QUERIER]));
 
+	if (tb[IFLA_BR_MCAST_QUERIER_STATE]) {
+		struct rtattr *bqtb[BRIDGE_QUERIER_MAX + 1];
+		SPRINT_BUF(other_time);
+
+		parse_rtattr_nested(bqtb, BRIDGE_QUERIER_MAX, tb[IFLA_BR_MCAST_QUERIER_STATE]);
+		memset(other_time, 0, sizeof(other_time));
+
+		open_json_object("mcast_querier_state_ipv4");
+		if (bqtb[BRIDGE_QUERIER_IP_ADDRESS])
+			print_string(PRINT_ANY,
+				"mcast_querier_ipv4_addr",
+				"mcast_querier_ipv4_addr %s ",
+				format_host_rta(AF_INET, bqtb[BRIDGE_QUERIER_IP_ADDRESS]));
+		if (bqtb[BRIDGE_QUERIER_IP_PORT])
+			print_uint(PRINT_ANY,
+				"mcast_querier_ipv4_port",
+				"mcast_querier_ipv4_port %u ",
+				rta_getattr_u32(bqtb[BRIDGE_QUERIER_IP_PORT]));
+		if (bqtb[BRIDGE_QUERIER_IP_OTHER_TIMER])
+			print_string(PRINT_ANY,
+				"mcast_querier_ipv4_other_timer",
+				"mcast_querier_ipv4_other_timer %s ",
+				sprint_time64(
+					rta_getattr_u64(bqtb[BRIDGE_QUERIER_IP_OTHER_TIMER]),
+									other_time));
+		close_json_object();
+		open_json_object("mcast_querier_state_ipv6");
+		if (bqtb[BRIDGE_QUERIER_IPV6_ADDRESS])
+			print_string(PRINT_ANY,
+				"mcast_querier_ipv6_addr",
+				"mcast_querier_ipv6_addr %s ",
+				format_host_rta(AF_INET6, bqtb[BRIDGE_QUERIER_IPV6_ADDRESS]));
+		if (bqtb[BRIDGE_QUERIER_IPV6_PORT])
+			print_uint(PRINT_ANY,
+				"mcast_querier_ipv6_port",
+				"mcast_querier_ipv6_port %u ",
+				rta_getattr_u32(bqtb[BRIDGE_QUERIER_IPV6_PORT]));
+		if (bqtb[BRIDGE_QUERIER_IPV6_OTHER_TIMER])
+			print_string(PRINT_ANY,
+				"mcast_querier_ipv6_other_timer",
+				"mcast_querier_ipv6_other_timer %s ",
+				sprint_time64(
+					rta_getattr_u64(bqtb[BRIDGE_QUERIER_IPV6_OTHER_TIMER]),
+									other_time));
+		close_json_object();
+	}
+
 	if (tb[IFLA_BR_MCAST_HASH_ELASTICITY])
 		print_uint(PRINT_ANY,
 			   "mcast_hash_elasticity",