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openvswitch/0001-ovn-nbctl-Fix-the-ovn-...

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From 71981938b2db070c130ec717aab141cd9c0fa860 Mon Sep 17 00:00:00 2001
From: Numan Siddique <nusiddiq@redhat.com>
Date: Tue, 6 Nov 2018 11:59:38 +0530
Subject: [PATCH] ovn-nbctl: Fix the ovn-nbctl test "LBs - daemon" which fails
during rpm build
When 'make check' is called by the mock rpm build (which disables networking),
the test "ovn-nbctl: LBs - daemon" fails when it runs the command
"ovn-nbctl lb-add lb0 30.0.0.1a 192.168.10.10:80,192.168.10.20:80". ovn-nbctl
extracts the vip by calling the socket util function 'inet_parse_active()',
and this function blocks when libunbound function ub_resolve() is called
further down. ub_resolve() is a blocking function without timeout and all the
ovs/ovn utilities use this function.
As reported by Timothy Redaelli, the issue can also be reproduced by running
the below commands
$ sudo unshare -mn -- sh -c 'ip addr add dev lo 127.0.0.1 && \
mount --bind /dev/null /etc/resolv.conf && runuser $SUDO_USER'
$ make sandbox SANDBOXFLAGS="--ovn"
$ ovn-nbctl -vsocket_util:off lb-add lb0 30.0.0.1a \
192.168.10.10:80,192.168.10.20:80
To address this issue, this patch adds a new bool argument 'resolve_host' to
the function inet_parse_active() to resolve the host only if it is 'true'.
ovn-nbctl/ovn-northd will pass 'false' when it calls this function to parse
the load balancer values.
Reported-by: Timothy Redaelli <tredaelli@redhat.com>
Reported-at: https://bugzilla.redhat.com/show_bug.cgi?id=1641672
Signed-off-by: Numan Siddique <nusiddiq@redhat.com>
Signed-off-by: Ben Pfaff <blp@ovn.org>
---
lib/socket-util.c | 7 ++++---
lib/socket-util.h | 2 +-
lib/stream.c | 2 +-
ofproto/ofproto-dpif-sflow.c | 2 +-
ovn/northd/ovn-northd.c | 2 +-
ovn/utilities/ovn-nbctl.c | 6 +++---
ovsdb/raft-private.c | 2 +-
7 files changed, 12 insertions(+), 11 deletions(-)
diff --git a/lib/socket-util.c b/lib/socket-util.c
index 504f4cd59..5f82e89c1 100644
--- a/lib/socket-util.c
+++ b/lib/socket-util.c
@@ -518,12 +518,13 @@ exit:
* is optional and defaults to 'default_port' (use 0 to make the kernel choose
* an available port, although this isn't usually appropriate for active
* connections). If 'default_port' is negative, then <port> is required.
+ * It resolves the host if 'resolve_host' is true.
*
* On success, returns true and stores the parsed remote address into '*ss'.
* On failure, logs an error, stores zeros into '*ss', and returns false. */
bool
inet_parse_active(const char *target_, int default_port,
- struct sockaddr_storage *ss)
+ struct sockaddr_storage *ss, bool resolve_host)
{
char *target = xstrdup(target_);
char *port, *host;
@@ -538,7 +539,7 @@ inet_parse_active(const char *target_, int default_port,
ok = false;
} else {
ok = parse_sockaddr_components(ss, host, port, default_port,
- target_, true);
+ target_, resolve_host);
}
if (!ok) {
memset(ss, 0, sizeof *ss);
@@ -575,7 +576,7 @@ inet_open_active(int style, const char *target, int default_port,
int error;
/* Parse. */
- if (!inet_parse_active(target, default_port, &ss)) {
+ if (!inet_parse_active(target, default_port, &ss, true)) {
error = EAFNOSUPPORT;
goto exit;
}
diff --git a/lib/socket-util.h b/lib/socket-util.h
index 6d386304d..a65433d90 100644
--- a/lib/socket-util.h
+++ b/lib/socket-util.h
@@ -49,7 +49,7 @@ ovs_be32 guess_netmask(ovs_be32 ip);
void inet_parse_host_port_tokens(char *s, char **hostp, char **portp);
void inet_parse_port_host_tokens(char *s, char **portp, char **hostp);
bool inet_parse_active(const char *target, int default_port,
- struct sockaddr_storage *ssp);
+ struct sockaddr_storage *ssp, bool resolve_host);
int inet_open_active(int style, const char *target, int default_port,
struct sockaddr_storage *ssp, int *fdp, uint8_t dscp);
diff --git a/lib/stream.c b/lib/stream.c
index 4e15fe0c8..c4dabda39 100644
--- a/lib/stream.c
+++ b/lib/stream.c
@@ -751,7 +751,7 @@ stream_parse_target_with_default_port(const char *target, int default_port,
struct sockaddr_storage *ss)
{
return ((!strncmp(target, "tcp:", 4) || !strncmp(target, "ssl:", 4))
- && inet_parse_active(target + 4, default_port, ss));
+ && inet_parse_active(target + 4, default_port, ss, true));
}
/* Attempts to guess the content type of a stream whose first few bytes were
diff --git a/ofproto/ofproto-dpif-sflow.c b/ofproto/ofproto-dpif-sflow.c
index 62a09b5d1..7da31753c 100644
--- a/ofproto/ofproto-dpif-sflow.c
+++ b/ofproto/ofproto-dpif-sflow.c
@@ -468,7 +468,7 @@ sflow_choose_agent_address(const char *agent_device,
const char *target;
SSET_FOR_EACH (target, targets) {
struct sockaddr_storage ss;
- if (inet_parse_active(target, SFL_DEFAULT_COLLECTOR_PORT, &ss)) {
+ if (inet_parse_active(target, SFL_DEFAULT_COLLECTOR_PORT, &ss, true)) {
/* sFlow only supports target in default routing table with
* packet mark zero.
*/
diff --git a/ovn/northd/ovn-northd.c b/ovn/northd/ovn-northd.c
index 5e61708be..d59fc45ca 100644
--- a/ovn/northd/ovn-northd.c
+++ b/ovn/northd/ovn-northd.c
@@ -3204,7 +3204,7 @@ ip_address_and_port_from_lb_key(const char *key, char **ip_address,
uint16_t *port, int *addr_family)
{
struct sockaddr_storage ss;
- if (!inet_parse_active(key, 0, &ss)) {
+ if (!inet_parse_active(key, 0, &ss, false)) {
static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(5, 1);
VLOG_WARN_RL(&rl, "bad ip address or port for load balancer key %s",
key);
diff --git a/ovn/utilities/ovn-nbctl.c b/ovn/utilities/ovn-nbctl.c
index 42aac2251..09bbcf76a 100644
--- a/ovn/utilities/ovn-nbctl.c
+++ b/ovn/utilities/ovn-nbctl.c
@@ -2553,7 +2553,7 @@ nbctl_lb_add(struct ctl_context *ctx)
}
struct sockaddr_storage ss_vip;
- if (!inet_parse_active(lb_vip, 0, &ss_vip)) {
+ if (!inet_parse_active(lb_vip, 0, &ss_vip, false)) {
ctl_error(ctx, "%s: should be an IP address (or an IP address "
"and a port number with : as a separator).", lb_vip);
return;
@@ -2583,7 +2583,7 @@ nbctl_lb_add(struct ctl_context *ctx)
struct sockaddr_storage ss_dst;
if (lb_vip_port) {
- if (!inet_parse_active(token, -1, &ss_dst)) {
+ if (!inet_parse_active(token, -1, &ss_dst, false)) {
ctl_error(ctx, "%s: should be an IP address and a port "
"number with : as a separator.", token);
goto out;
@@ -2702,7 +2702,7 @@ lb_info_add_smap(const struct nbrec_load_balancer *lb,
const struct smap_node *node = nodes[i];
struct sockaddr_storage ss;
- if (!inet_parse_active(node->key, 0, &ss)) {
+ if (!inet_parse_active(node->key, 0, &ss, false)) {
continue;
}
diff --git a/ovsdb/raft-private.c b/ovsdb/raft-private.c
index 07996e35b..e5e2c29cf 100644
--- a/ovsdb/raft-private.c
+++ b/ovsdb/raft-private.c
@@ -33,7 +33,7 @@ raft_address_validate(const char *address)
return NULL;
} else if (!strncmp(address, "ssl:", 4) || !strncmp(address, "tcp:", 4)) {
struct sockaddr_storage ss;
- if (!inet_parse_active(address + 4, -1, &ss)) {
+ if (!inet_parse_active(address + 4, -1, &ss, true)) {
return ovsdb_error(NULL, "%s: syntax error in address", address);
}
return NULL;
--
2.19.1
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