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netlink: Split nl_addr() into separate operation functions

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nl_addr() can perform three quite different operations based on the 'op'
parameter, each of which uses a different subset of the parameters.  Split
them up into a function for each operation.  This does use more lines of
code, but the overlap wasn't that great, and the separated logic is much
easier to follow.

It's also clearer in the callers what we expect the netlink operations to
do, and what information it uses.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
[sbrivio: Minor formatting fixes in pasta_ns_conf()]
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
This commit is contained in:
David Gibson
2023-08-03 17:19:41 +10:00
committed by Stefano Brivio
parent e96182e9c2
commit eff3bcb245
4 changed files with 165 additions and 111 deletions
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12
conf.c
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@@ -651,10 +651,8 @@ static unsigned int conf_ip4(unsigned int ifi,
if (IN4_IS_ADDR_UNSPECIFIED(&ip4->gw))
nl_route(NL_GET, ifi, 0, AF_INET, &ip4->gw);
if (IN4_IS_ADDR_UNSPECIFIED(&ip4->addr)) {
nl_addr(NL_GET, ifi, 0, AF_INET,
&ip4->addr, &ip4->prefix_len, NULL);
}
if (IN4_IS_ADDR_UNSPECIFIED(&ip4->addr))
nl_addr_get(ifi, AF_INET, &ip4->addr, &ip4->prefix_len, NULL);
if (!ip4->prefix_len) {
in_addr_t addr = ntohl(ip4->addr.s_addr);
@@ -704,9 +702,9 @@ static unsigned int conf_ip6(unsigned int ifi,
if (IN6_IS_ADDR_UNSPECIFIED(&ip6->gw))
nl_route(NL_GET, ifi, 0, AF_INET6, &ip6->gw);
nl_addr(NL_GET, ifi, 0, AF_INET6,
IN6_IS_ADDR_UNSPECIFIED(&ip6->addr) ? &ip6->addr : NULL,
&prefix_len, &ip6->addr_ll);
nl_addr_get(ifi, AF_INET6,
IN6_IS_ADDR_UNSPECIFIED(&ip6->addr) ? &ip6->addr : NULL,
&prefix_len, &ip6->addr_ll);
memcpy(&ip6->addr_seen, &ip6->addr, sizeof(ip6->addr));
memcpy(&ip6->addr_ll_seen, &ip6->addr_ll, sizeof(ip6->addr_ll));