diff mbox series

[net-next,v2,06/13] vxlan: mdb: Factor out a helper for remote entry size calculation

Message ID 20231025123020.788710-7-idosch@nvidia.com (mailing list archive)
State Accepted
Commit 14c32a46d992412bc276b3365a0c3e5b8b1af9f2
Delegated to: Netdev Maintainers
Headers show
Series Add MDB get support | expand

Checks

Context Check Description
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Clearly marked for net-next, async
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 1363 this patch: 1363
netdev/cc_maintainers success CCed 7 of 7 maintainers
netdev/build_clang success Errors and warnings before: 1388 this patch: 1388
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 1388 this patch: 1388
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 48 lines checked
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Ido Schimmel Oct. 25, 2023, 12:30 p.m. UTC
Currently, netlink notifications are sent for individual remote entries
and not for the entire MDB entry itself.

Subsequent patches are going to add MDB get support which will require
the VXLAN driver to reply with an entire MDB entry.

Therefore, as a preparation, factor out a helper to calculate the size
of an individual remote entry. When determining the size of the reply
this helper will be invoked for each remote entry in the MDB entry.

No functional changes intended.

Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Acked-by: Nikolay Aleksandrov <razor@blackwall.org>
---
 drivers/net/vxlan/vxlan_mdb.c | 28 +++++++++++++++++++---------
 1 file changed, 19 insertions(+), 9 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/vxlan/vxlan_mdb.c b/drivers/net/vxlan/vxlan_mdb.c
index 0b6043e1473b..19640f7e3a88 100644
--- a/drivers/net/vxlan/vxlan_mdb.c
+++ b/drivers/net/vxlan/vxlan_mdb.c
@@ -925,23 +925,20 @@  vxlan_mdb_nlmsg_src_list_size(const struct vxlan_mdb_entry_key *group,
 	return nlmsg_size;
 }
 
-static size_t vxlan_mdb_nlmsg_size(const struct vxlan_dev *vxlan,
-				   const struct vxlan_mdb_entry *mdb_entry,
-				   const struct vxlan_mdb_remote *remote)
+static size_t
+vxlan_mdb_nlmsg_remote_size(const struct vxlan_dev *vxlan,
+			    const struct vxlan_mdb_entry *mdb_entry,
+			    const struct vxlan_mdb_remote *remote)
 {
 	const struct vxlan_mdb_entry_key *group = &mdb_entry->key;
 	struct vxlan_rdst *rd = rtnl_dereference(remote->rd);
 	size_t nlmsg_size;
 
-	nlmsg_size = NLMSG_ALIGN(sizeof(struct br_port_msg)) +
-		     /* MDBA_MDB */
-		     nla_total_size(0) +
-		     /* MDBA_MDB_ENTRY */
-		     nla_total_size(0) +
 		     /* MDBA_MDB_ENTRY_INFO */
-		     nla_total_size(sizeof(struct br_mdb_entry)) +
+	nlmsg_size = nla_total_size(sizeof(struct br_mdb_entry)) +
 		     /* MDBA_MDB_EATTR_TIMER */
 		     nla_total_size(sizeof(u32));
+
 	/* MDBA_MDB_EATTR_SOURCE */
 	if (vxlan_mdb_is_sg(group))
 		nlmsg_size += nla_total_size(vxlan_addr_size(&group->dst));
@@ -969,6 +966,19 @@  static size_t vxlan_mdb_nlmsg_size(const struct vxlan_dev *vxlan,
 	return nlmsg_size;
 }
 
+static size_t vxlan_mdb_nlmsg_size(const struct vxlan_dev *vxlan,
+				   const struct vxlan_mdb_entry *mdb_entry,
+				   const struct vxlan_mdb_remote *remote)
+{
+	return NLMSG_ALIGN(sizeof(struct br_port_msg)) +
+	       /* MDBA_MDB */
+	       nla_total_size(0) +
+	       /* MDBA_MDB_ENTRY */
+	       nla_total_size(0) +
+	       /* Remote entry */
+	       vxlan_mdb_nlmsg_remote_size(vxlan, mdb_entry, remote);
+}
+
 static int vxlan_mdb_nlmsg_fill(const struct vxlan_dev *vxlan,
 				struct sk_buff *skb,
 				const struct vxlan_mdb_entry *mdb_entry,