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| author | Eelco Chaudron <echaudro@redhat.com> | 2021-01-13 14:50:00 +0100 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2021-01-14 16:32:14 -0800 |
| commit | a5317f3b06b3afe7906785dc5912aca3058cfdc2 (patch) | |
| tree | 71835724bd19ef4e44d0e6341af0941d680f5b18 /net/openvswitch/flow_netlink.c | |
| parent | 3bf679e2f7d9f332351489549369e1cfa39a421d (diff) | |
| download | linux-a5317f3b06b3afe7906785dc5912aca3058cfdc2.tar.gz | |
net: openvswitch: add log message for error case
As requested by upstream OVS, added some error messages in the validate_and_copy_dec_ttl function. Includes a small cleanup, which removes an unnecessary parameter from the dec_ttl_exception_handler() function. Reported-by: Flavio Leitner <fbl@sysclose.org> Signed-off-by: Eelco Chaudron <echaudro@redhat.com> Acked-by: Flavio Leitner <fbl@sysclose.org> Link: https://lore.kernel.org/r/161054576573.26637.18396634650212670580.stgit@ebuild Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net/openvswitch/flow_netlink.c')
| -rw-r--r-- | net/openvswitch/flow_netlink.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/net/openvswitch/flow_netlink.c b/net/openvswitch/flow_netlink.c index 4c5c2331e764..fd1f809e9bc1 100644 --- a/net/openvswitch/flow_netlink.c +++ b/net/openvswitch/flow_netlink.c @@ -2515,15 +2515,25 @@ static int validate_and_copy_dec_ttl(struct net *net, if (type > OVS_DEC_TTL_ATTR_MAX) continue; - if (!type || attrs[type]) + if (!type || attrs[type]) { + OVS_NLERR(log, "Duplicate or invalid key (type %d).", + type); return -EINVAL; + } attrs[type] = a; } + if (rem) { + OVS_NLERR(log, "Message has %d unknown bytes.", rem); + return -EINVAL; + } + actions = attrs[OVS_DEC_TTL_ATTR_ACTION]; - if (rem || !actions || (nla_len(actions) && nla_len(actions) < NLA_HDRLEN)) + if (!actions || (nla_len(actions) && nla_len(actions) < NLA_HDRLEN)) { + OVS_NLERR(log, "Missing valid actions attribute."); return -EINVAL; + } start = add_nested_action_start(sfa, OVS_ACTION_ATTR_DEC_TTL, log); if (start < 0) |