107 lines
3.6 KiB
Diff
107 lines
3.6 KiB
Diff
From 46d50fe9ca30e8377995fea2b7d59239b46a0cfa Mon Sep 17 00:00:00 2001
|
|
Message-Id: <46d50fe9ca30e8377995fea2b7d59239b46a0cfa@dist-git>
|
|
From: Laine Stump <laine@laine.org>
|
|
Date: Mon, 14 Jan 2019 11:35:04 -0500
|
|
Subject: [PATCH] util: use nlmsg_find_attr() instead of an open-coded loop
|
|
|
|
This is about the same number of code lines, but is simpler, and more
|
|
consistent with what will be added to check another attribute in a
|
|
coming patch.
|
|
|
|
As a side effect, it
|
|
|
|
Resolves: https://bugzilla.redhat.com/1583131
|
|
|
|
Signed-off-by: Laine Stump <laine@laine.org>
|
|
Reviewed-by: Erik Skultety <eskultet@redhat.com>
|
|
(cherry picked from commit 7282f455aaaa8bf2f73236aa9ec6b65b33c0fcdb)
|
|
|
|
Conflicts: src/util/virnetdevip.c - more blowback from the addition of VIR_AUTOPTR
|
|
upstream.
|
|
Signed-off-by: Laine Stump <laine@laine.org>
|
|
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
|
|
---
|
|
src/util/virnetdevip.c | 52 ++++++++++++++++++------------------------
|
|
1 file changed, 22 insertions(+), 30 deletions(-)
|
|
|
|
diff --git a/src/util/virnetdevip.c b/src/util/virnetdevip.c
|
|
index 937ebcdbdb..d56f4f05f3 100644
|
|
--- a/src/util/virnetdevip.c
|
|
+++ b/src/util/virnetdevip.c
|
|
@@ -564,50 +564,42 @@ virNetDevIPCheckIPv6ForwardingCallback(struct nlmsghdr *resp,
|
|
{
|
|
struct rtmsg *rtmsg = NLMSG_DATA(resp);
|
|
int accept_ra = -1;
|
|
- struct rtattr *rta;
|
|
+ struct rtattr *rta_attr;
|
|
char *ifname = NULL;
|
|
+ int ifindex = -1;
|
|
struct virNetDevIPCheckIPv6ForwardingData *data = opaque;
|
|
int ret = 0;
|
|
- int len = RTM_PAYLOAD(resp);
|
|
- int oif = -1;
|
|
|
|
/* Ignore messages other than route ones */
|
|
if (resp->nlmsg_type != RTM_NEWROUTE)
|
|
return ret;
|
|
|
|
- /* Extract a device ID attribute */
|
|
- VIR_WARNINGS_NO_CAST_ALIGN
|
|
- for (rta = RTM_RTA(rtmsg); RTA_OK(rta, len); rta = RTA_NEXT(rta, len)) {
|
|
- VIR_WARNINGS_RESET
|
|
- if (rta->rta_type == RTA_OIF) {
|
|
- oif = *(int *)RTA_DATA(rta);
|
|
-
|
|
- /* Should never happen: netlink message would be broken */
|
|
- if (ifname) {
|
|
- char *ifname2 = virNetDevGetName(oif);
|
|
- VIR_WARN("Single route has unexpected 2nd interface "
|
|
- "- '%s' and '%s'", ifname, ifname2);
|
|
- VIR_FREE(ifname2);
|
|
- break;
|
|
- }
|
|
-
|
|
- if (!(ifname = virNetDevGetName(oif)))
|
|
- goto error;
|
|
- }
|
|
- }
|
|
-
|
|
/* No need to do anything else for non RA routes */
|
|
if (rtmsg->rtm_protocol != RTPROT_RA)
|
|
goto cleanup;
|
|
|
|
- data->hasRARoutes = true;
|
|
+ rta_attr = (struct rtattr *)nlmsg_find_attr(resp, sizeof(struct rtmsg), RTA_OIF);
|
|
+ if (rta_attr) {
|
|
+ /* This is a single path route, with interface used to reach
|
|
+ * nexthop in the RTA_OIF attribute.
|
|
+ */
|
|
+ ifindex = *(int *)RTA_DATA(rta_attr);
|
|
+ ifname = virNetDevGetName(ifindex);
|
|
|
|
- /* Check the accept_ra value for the interface */
|
|
- accept_ra = virNetDevIPGetAcceptRA(ifname);
|
|
- VIR_DEBUG("Checking route for device %s, accept_ra: %d", ifname, accept_ra);
|
|
+ if (!ifname)
|
|
+ goto error;
|
|
|
|
- if (accept_ra != 2 && virNetDevIPCheckIPv6ForwardingAddIF(data, &ifname) < 0)
|
|
- goto error;
|
|
+ accept_ra = virNetDevIPGetAcceptRA(ifname);
|
|
+
|
|
+ VIR_DEBUG("Checking route for device %s (%d), accept_ra: %d",
|
|
+ ifname, ifindex, accept_ra);
|
|
+
|
|
+ if (accept_ra != 2 && virNetDevIPCheckIPv6ForwardingAddIF(data, &ifname) < 0)
|
|
+ goto error;
|
|
+
|
|
+ data->hasRARoutes = true;
|
|
+ goto cleanup;
|
|
+ }
|
|
|
|
cleanup:
|
|
VIR_FREE(ifname);
|
|
--
|
|
2.20.1
|
|
|