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From: Nikolay Aleksandrov <razor@blackwall.org>
To: netdev@vger.kernel.org
Cc: roopa@nvidia.com, donaldsharp72@gmail.com, dsahern@gmail.com,
	idosch@idosch.org, Nikolay Aleksandrov <nikolay@nvidia.com>
Subject: [PATCH iproute2-next 10/12] ip: nexthop: add a helper which retrieves and prints cached nh entry
Date: Thu, 30 Sep 2021 14:38:42 +0300	[thread overview]
Message-ID: <20210930113844.1829373-11-razor@blackwall.org> (raw)
In-Reply-To: <20210930113844.1829373-1-razor@blackwall.org>

From: Nikolay Aleksandrov <nikolay@nvidia.com>

Add a helper which looks for a nexthop in the cache and if not found
reads the entry from the kernel and caches it. Finally the entry is
printed.

Signed-off-by: Nikolay Aleksandrov <nikolay@nvidia.com>
---
 ip/ipnexthop.c | 16 ++++++++++++++++
 ip/nh_common.h |  3 +++
 2 files changed, 19 insertions(+)

diff --git a/ip/ipnexthop.c b/ip/ipnexthop.c
index e0f0f78460c9..31462c57d299 100644
--- a/ip/ipnexthop.c
+++ b/ip/ipnexthop.c
@@ -602,6 +602,22 @@ static void ipnh_cache_del(struct nh_entry *nhe)
 	free(nhe);
 }
 
+void print_cache_nexthop_id(FILE *fp, const char *fp_prefix, const char *jsobj,
+			    __u32 nh_id)
+{
+	struct nh_entry *nhe = ipnh_cache_get(nh_id);
+
+	if (!nhe) {
+		nhe = ipnh_cache_add(nh_id);
+		if (!nhe)
+			return;
+	}
+
+	if (fp_prefix)
+		print_string(PRINT_FP, NULL, "%s", fp_prefix);
+	__print_nexthop_entry(fp, jsobj, nhe, false);
+}
+
 int print_nexthop(struct nlmsghdr *n, void *arg)
 {
 	struct nhmsg *nhm = NLMSG_DATA(n);
diff --git a/ip/nh_common.h b/ip/nh_common.h
index ee84d968d8dd..b448f1b5530b 100644
--- a/ip/nh_common.h
+++ b/ip/nh_common.h
@@ -46,4 +46,7 @@ struct nh_entry {
 	struct nexthop_grp	*nh_groups;
 };
 
+void print_cache_nexthop_id(FILE *fp, const char *fp_prefix, const char *jsobj,
+			    __u32 nh_id);
+
 #endif /* __NH_COMMON_H__ */
-- 
2.31.1


  parent reply	other threads:[~2021-09-30 11:39 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-30 11:38 [PATCH iproute2-next 00/12] ip: nexthop: cache nexthops and print routes' nh info Nikolay Aleksandrov
2021-09-30 11:38 ` [PATCH iproute2-next 01/12] ip: print_rta_if takes ifindex as device argument instead of attribute Nikolay Aleksandrov
2021-09-30 11:38 ` [PATCH iproute2-next 02/12] ip: export print_rta_gateway version which outputs prepared gateway string Nikolay Aleksandrov
2021-09-30 11:38 ` [PATCH iproute2-next 03/12] ip: nexthop: add resilient group structure Nikolay Aleksandrov
2021-09-30 11:38 ` [PATCH iproute2-next 04/12] ip: nexthop: split print_nh_res_group into parse and print parts Nikolay Aleksandrov
2021-09-30 11:38 ` [PATCH iproute2-next 05/12] ip: nexthop: add nh entry structure Nikolay Aleksandrov
2021-09-30 11:38 ` [PATCH iproute2-next 06/12] ip: nexthop: parse attributes into nh entry structure before printing Nikolay Aleksandrov
2021-09-30 11:38 ` [PATCH iproute2-next 07/12] ip: nexthop: factor out print_nexthop's nh entry printing Nikolay Aleksandrov
2021-09-30 11:38 ` [PATCH iproute2-next 08/12] ip: nexthop: factor out ipnh_get_id rtnl talk into a helper Nikolay Aleksandrov
2021-09-30 11:38 ` [PATCH iproute2-next 09/12] ip: nexthop: add cache helpers Nikolay Aleksandrov
2021-10-04  0:33   ` David Ahern
2021-10-04  9:03     ` [PATCH iproute2-next] ip: nexthop: keep cache netlink socket open Nikolay Aleksandrov
2021-10-05 14:35       ` David Ahern
2021-09-30 11:38 ` Nikolay Aleksandrov [this message]
2021-09-30 11:38 ` [PATCH iproute2-next 11/12] ip: route: print and cache detailed nexthop information when requested Nikolay Aleksandrov
2021-09-30 11:38 ` [PATCH iproute2-next 12/12] ip: nexthop: add print_cache_nexthop which prints and manages the nh cache Nikolay Aleksandrov
2021-10-04  0:40 ` [PATCH iproute2-next 00/12] ip: nexthop: cache nexthops and print routes' nh info patchwork-bot+netdevbpf

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