[Intel-wired-lan] [PATCH net-next v4 2/2] net: vxlan: vxlan_core.c: Add extack support to vxlan_fdb_delete
Alaa Mohamed
eng.alaamohamedsoliman.am at gmail.com
Mon Apr 25 14:25:07 UTC 2022
This patch adds extack msg support to vxlan_fdb_delete and vxlan_fdb_parse.
extack is used to propagate meaningful error msgs to the user of vxlan
fdb netlink api
Signed-off-by: Alaa Mohamed <eng.alaamohamedsoliman.am at gmail.com>
---
changes in V2:
- fix spelling vxlan_fdb_delete
- add missing braces
- edit error message
---
changes in V3:
fix errors reported by checkpatch.pl
---
changes in V4:
- fix errors reported by checkpatch.pl
- edit commit message.
---
drivers/net/vxlan/vxlan_core.c | 37 ++++++++++++++++++++++++----------
1 file changed, 26 insertions(+), 11 deletions(-)
diff --git a/drivers/net/vxlan/vxlan_core.c b/drivers/net/vxlan/vxlan_core.c
index cf2f60037340..ef69aeb058b8 100644
--- a/drivers/net/vxlan/vxlan_core.c
+++ b/drivers/net/vxlan/vxlan_core.c
@@ -1129,19 +1129,24 @@ static void vxlan_fdb_dst_destroy(struct vxlan_dev *vxlan, struct vxlan_fdb *f,
static int vxlan_fdb_parse(struct nlattr *tb[], struct vxlan_dev *vxlan,
union vxlan_addr *ip, __be16 *port, __be32 *src_vni,
- __be32 *vni, u32 *ifindex, u32 *nhid)
+ __be32 *vni, u32 *ifindex, u32 *nhid, struct netlink_ext_ack *extack)
{
struct net *net = dev_net(vxlan->dev);
int err;
if (tb[NDA_NH_ID] && (tb[NDA_DST] || tb[NDA_VNI] || tb[NDA_IFINDEX] ||
- tb[NDA_PORT]))
- return -EINVAL;
+ tb[NDA_PORT])) {
+ NL_SET_ERR_MSG(extack,
+ "DST, VNI, ifindex and port are mutually exclusive with NH_ID");
+ return -EINVAL;
+ }
if (tb[NDA_DST]) {
err = vxlan_nla_get_addr(ip, tb[NDA_DST]);
- if (err)
+ if (err) {
+ NL_SET_ERR_MSG(extack, "Unsupported address family");
return err;
+ }
} else {
union vxlan_addr *remote = &vxlan->default_dst.remote_ip;
@@ -1157,24 +1162,30 @@ static int vxlan_fdb_parse(struct nlattr *tb[], struct vxlan_dev *vxlan,
}
if (tb[NDA_PORT]) {
- if (nla_len(tb[NDA_PORT]) != sizeof(__be16))
+ if (nla_len(tb[NDA_PORT]) != sizeof(__be16)) {
+ NL_SET_ERR_MSG(extack, "Invalid vxlan port");
return -EINVAL;
+ }
*port = nla_get_be16(tb[NDA_PORT]);
} else {
*port = vxlan->cfg.dst_port;
}
if (tb[NDA_VNI]) {
- if (nla_len(tb[NDA_VNI]) != sizeof(u32))
+ if (nla_len(tb[NDA_VNI]) != sizeof(u32)) {
+ NL_SET_ERR_MSG(extack, "Invalid vni");
return -EINVAL;
+ }
*vni = cpu_to_be32(nla_get_u32(tb[NDA_VNI]));
} else {
*vni = vxlan->default_dst.remote_vni;
}
if (tb[NDA_SRC_VNI]) {
- if (nla_len(tb[NDA_SRC_VNI]) != sizeof(u32))
+ if (nla_len(tb[NDA_SRC_VNI]) != sizeof(u32)) {
+ NL_SET_ERR_MSG(extack, "Invalid src vni");
return -EINVAL;
+ }
*src_vni = cpu_to_be32(nla_get_u32(tb[NDA_SRC_VNI]));
} else {
*src_vni = vxlan->default_dst.remote_vni;
@@ -1183,12 +1194,16 @@ static int vxlan_fdb_parse(struct nlattr *tb[], struct vxlan_dev *vxlan,
if (tb[NDA_IFINDEX]) {
struct net_device *tdev;
- if (nla_len(tb[NDA_IFINDEX]) != sizeof(u32))
+ if (nla_len(tb[NDA_IFINDEX]) != sizeof(u32)) {
+ NL_SET_ERR_MSG(extack, "Invalid ifindex");
return -EINVAL;
+ }
*ifindex = nla_get_u32(tb[NDA_IFINDEX]);
tdev = __dev_get_by_index(net, *ifindex);
- if (!tdev)
+ if (!tdev) {
+ NL_SET_ERR_MSG(extack, "Device not found");
return -EADDRNOTAVAIL;
+ }
} else {
*ifindex = 0;
}
@@ -1226,7 +1241,7 @@ static int vxlan_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
return -EINVAL;
err = vxlan_fdb_parse(tb, vxlan, &ip, &port, &src_vni, &vni, &ifindex,
- &nhid);
+ &nhid, extack);
if (err)
return err;
@@ -1291,7 +1306,7 @@ static int vxlan_fdb_delete(struct ndmsg *ndm, struct nlattr *tb[],
int err;
err = vxlan_fdb_parse(tb, vxlan, &ip, &port, &src_vni, &vni, &ifindex,
- &nhid);
+ &nhid, extack);
if (err)
return err;
--
2.36.0
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