[PATCH v3 net-next] rtnetlink: bridge: use ext_ack instead of printk
From: Florian Westphal <fw@strlen.de>
Date: 2017-10-10 14:44:12
We can now piggyback error strings to userspace via extended acks rather than using printk. Before: bridge fdb add 01:02:03:04:05:06 dev br0 vlan 4095 RTNETLINK answers: Invalid argument After: bridge fdb add 01:02:03:04:05:06 dev br0 vlan 4095 Error: invalid vlan id. v3: drop 'RTM_' prefixes, suggested by David Ahern, they are not useful, the add/del in bridge command line is enough. Also reword error in response to malformed/bad vlan id attribute size. Cc: David Ahern <redacted> Signed-off-by: Florian Westphal <fw@strlen.de> --- net/core/rtnetlink.c | 28 ++++++++++++++-------------- 1 file changed, 14 insertions(+), 14 deletions(-)
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index e84d108cfee4..af2dea45df33 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c@@ -3066,21 +3066,21 @@ int ndo_dflt_fdb_add(struct ndmsg *ndm, } EXPORT_SYMBOL(ndo_dflt_fdb_add); -static int fdb_vid_parse(struct nlattr *vlan_attr, u16 *p_vid) +static int fdb_vid_parse(struct nlattr *vlan_attr, u16 *p_vid, + struct netlink_ext_ack *extack) { u16 vid = 0; if (vlan_attr) { if (nla_len(vlan_attr) != sizeof(u16)) { - pr_info("PF_BRIDGE: RTM_NEWNEIGH with invalid vlan\n"); + NL_SET_ERR_MSG(extack, "invalid vlan attribute size"); return -EINVAL; } vid = nla_get_u16(vlan_attr); if (!vid || vid >= VLAN_VID_MASK) { - pr_info("PF_BRIDGE: RTM_NEWNEIGH with invalid vlan id %d\n", - vid); + NL_SET_ERR_MSG(extack, "invalid vlan id"); return -EINVAL; } }
@@ -3105,24 +3105,24 @@ static int rtnl_fdb_add(struct sk_buff *skb, struct nlmsghdr *nlh, ndm = nlmsg_data(nlh); if (ndm->ndm_ifindex == 0) { - pr_info("PF_BRIDGE: RTM_NEWNEIGH with invalid ifindex\n"); + NL_SET_ERR_MSG(extack, "invalid ifindex"); return -EINVAL; } dev = __dev_get_by_index(net, ndm->ndm_ifindex); if (dev == NULL) { - pr_info("PF_BRIDGE: RTM_NEWNEIGH with unknown ifindex\n"); + NL_SET_ERR_MSG(extack, "unknown ifindex"); return -ENODEV; } if (!tb[NDA_LLADDR] || nla_len(tb[NDA_LLADDR]) != ETH_ALEN) { - pr_info("PF_BRIDGE: RTM_NEWNEIGH with invalid address\n"); + NL_SET_ERR_MSG(extack, "invalid address"); return -EINVAL; } addr = nla_data(tb[NDA_LLADDR]); - err = fdb_vid_parse(tb[NDA_VLAN], &vid); + err = fdb_vid_parse(tb[NDA_VLAN], &vid, extack); if (err) return err;
@@ -3209,24 +3209,24 @@ static int rtnl_fdb_del(struct sk_buff *skb, struct nlmsghdr *nlh, ndm = nlmsg_data(nlh); if (ndm->ndm_ifindex == 0) { - pr_info("PF_BRIDGE: RTM_DELNEIGH with invalid ifindex\n"); + NL_SET_ERR_MSG(extack, "invalid ifindex"); return -EINVAL; } dev = __dev_get_by_index(net, ndm->ndm_ifindex); if (dev == NULL) { - pr_info("PF_BRIDGE: RTM_DELNEIGH with unknown ifindex\n"); + NL_SET_ERR_MSG(extack, "unknown ifindex"); return -ENODEV; } if (!tb[NDA_LLADDR] || nla_len(tb[NDA_LLADDR]) != ETH_ALEN) { - pr_info("PF_BRIDGE: RTM_DELNEIGH with invalid address\n"); + NL_SET_ERR_MSG(extack, "invalid address"); return -EINVAL; } addr = nla_data(tb[NDA_LLADDR]); - err = fdb_vid_parse(tb[NDA_VLAN], &vid); + err = fdb_vid_parse(tb[NDA_VLAN], &vid, extack); if (err) return err;
@@ -3666,7 +3666,7 @@ static int rtnl_bridge_setlink(struct sk_buff *skb, struct nlmsghdr *nlh, dev = __dev_get_by_index(net, ifm->ifi_index); if (!dev) { - pr_info("PF_BRIDGE: RTM_SETLINK with unknown ifindex\n"); + NL_SET_ERR_MSG(extack, "RTM_SETLINK with unknown ifindex"); return -ENODEV; }
@@ -3741,7 +3741,7 @@ static int rtnl_bridge_dellink(struct sk_buff *skb, struct nlmsghdr *nlh, dev = __dev_get_by_index(net, ifm->ifi_index); if (!dev) { - pr_info("PF_BRIDGE: RTM_SETLINK with unknown ifindex\n"); + NL_SET_ERR_MSG(extack, "RTM_SETLINK with unknown ifindex"); return -ENODEV; }
--
2.13.6