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Similarly to what we've just done with routes, support NL_DUP for addresses (currently not exposed): nl_addr() can optionally copy mulitple addresses to the target namespace, by fixing up data from the dump with appropriate flags and interface index, and repeating it back to the kernel on the socket opened in the target namespace. Link-local addresses are not copied: the family is set to AF_UNSPEC, which means the kernel will ignore them. Same for addresses from a mismatching address (pre-4.19 kernels without support for NETLINK_GET_STRICT_CHK). Ignore IFA_LABEL attributes by changing their type to IFA_UNSPEC, because in general they will report mismatching names, and we don't really need to use labels as we already know the interface index. Signed-off-by: Stefano Brivio <sbrivio@redhat.com> Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
24 lines
633 B
C
24 lines
633 B
C
/* SPDX-License-Identifier: GPL-2.0-or-later
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* Copyright (c) 2021 Red Hat GmbH
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* Author: Stefano Brivio <sbrivio@redhat.com>
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*/
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#ifndef NETLINK_H
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#define NETLINK_H
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enum nl_op {
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NL_GET,
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NL_SET,
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NL_DUP,
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};
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void nl_sock_init(const struct ctx *c, bool ns);
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unsigned int nl_get_ext_if(sa_family_t af);
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void nl_route(enum nl_op op, unsigned int ifi, unsigned int ifi_ns,
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sa_family_t af, void *gw);
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void nl_addr(enum nl_op op, unsigned int ifi, unsigned int ifi_ns,
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sa_family_t af, void *addr, int *prefix_len, void *addr_l);
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void nl_link(int ns, unsigned int ifi, void *mac, int up, int mtu);
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#endif /* NETLINK_H */
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