7c15c84f6c
This is the first in a series of functions that aims to copy forward interface changes in the VPP dataplane into the linux interfaces. Capture link state changes (set interface state ...) and apply them to Linux. There's an important dissonance here: - When Linux sets a parent interface up, all children also go up. ip link set enp66s0f1 down ip link add link enp66s0f1 name foo type vlan id 1234 ip link set foo down ip link | grep enp66s0f1 9: enp66s0f1: <BROADCAST,MULTICAST> mtu 9000 qdisc mq state DOWN mode DEFAULT group default qlen 1000 61: foo@enp66s0f1: <BROADCAST,MULTICAST,M-DOWN> mtu 9000 qdisc noop state DOWN mode DEFAULT group default qlen 1000 ip link set enp66s0f1 up ip link | grep s0f1 9: enp66s0f1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 9000 qdisc mq state UP mode DEFAULT group default qlen 1000 61: foo@enp66s0f1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 9000 qdisc noqueue state UP mode DEFAULT group default qlen 1000 While in VPP this is not so, there each individual interface and sub-interface stands for itself. I think the proper fix here is to walk all sub-interfaces when a phy changes, and force a sync of those from VPP to LCP as well. I'll do that in a followup commit so it's easier to roll back.
79 lines
1.8 KiB
C
79 lines
1.8 KiB
C
/*
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* Copyright (c) 2020 Cisco and/or its affiliates.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <sched.h>
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#include <fcntl.h>
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#include <ctype.h>
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#include <sys/socket.h>
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#include <net/if.h>
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#include <plugins/lcpng/lcpng.h>
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lcp_main_t lcp_main;
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u8 *lcp_get_default_ns(void) {
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lcp_main_t *lcpm = &lcp_main;
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if (lcpm->default_namespace[0] == 0)
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return 0;
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return lcpm->default_namespace;
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}
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int lcp_get_default_ns_fd(void) {
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lcp_main_t *lcpm = &lcp_main;
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return lcpm->default_ns_fd;
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}
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/*
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* ns is expected to be or look like a NUL-terminated C string.
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*/
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int lcp_set_default_ns(u8 *ns) {
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lcp_main_t *lcpm = &lcp_main;
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char *p;
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int len;
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u8 *s;
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p = (char *) ns;
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len = clib_strnlen (p, LCP_NS_LEN);
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if (len >= LCP_NS_LEN)
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return -1;
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if (!p || *p == 0)
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{
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clib_memset(lcpm->default_namespace, 0, sizeof(lcpm->default_namespace));
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if (lcpm->default_ns_fd > 0)
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close(lcpm->default_ns_fd);
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lcpm->default_ns_fd = 0;
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return 0;
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}
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clib_strncpy((char *)lcpm->default_namespace, p, LCP_NS_LEN - 1);
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s = format(0, "/var/run/netns/%s%c", (char *)lcpm->default_namespace, 0);
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lcpm->default_ns_fd = open((char *)s, O_RDONLY);
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vec_free(s);
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return 0;
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}
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/*
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* fd.io coding-style-patch-verification: ON
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*
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* Local Variables:
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* eval: (c-set-style "gnu")
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* End:
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*/
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