From 0b20876022fed4f68934233b55c95b8fa91f92a9 Mon Sep 17 00:00:00 2001 From: Hans Dedecker Date: Fri, 29 Mar 2019 12:01:19 +0100 Subject: [PATCH] netlink: rework IPv6 address refresh logic Rework logic to refresh IPv6 addresses so we can get rid of the second for loop Signed-off-by: Hans Dedecker --- src/netlink.c | 47 +++++++++++++++++++---------------------------- 1 file changed, 19 insertions(+), 28 deletions(-) diff --git a/src/netlink.c b/src/netlink.c index c3536e7..4e151f5 100644 --- a/src/netlink.c +++ b/src/netlink.c @@ -198,27 +198,6 @@ static void refresh_iface_addr6(int ifindex) return; avl_for_each_element(&interfaces, iface, avl) { - if (iface->ifindex != ifindex) - continue; - - change = len != (ssize_t)iface->addr6_len; - for (ssize_t i = 0; !change && i < len; ++i) { - if (!IN6_ARE_ADDR_EQUAL(&addr[i].addr.in6, &iface->addr6[i].addr.in6) || - (addr[i].preferred > (uint32_t)now) != (iface->addr6[i].preferred > (uint32_t)now) || - addr[i].valid < iface->addr6[i].valid || addr[i].preferred < iface->addr6[i].preferred) - change = true; - } - break; - } - - if (!change) { - free(iface->addr6); - iface->addr6 = addr; - iface->addr6_len = len; - return; - } - - avl_for_element_range(iface, avl_last_element(&interfaces, iface, avl), iface, avl) { struct netevent_handler_info event_info; if (iface->ifindex != ifindex) @@ -229,20 +208,32 @@ static void refresh_iface_addr6(int ifindex) event_info.addrs_old.addrs = iface->addr6; event_info.addrs_old.len = iface->addr6_len; + if (!change) { + change = len != (ssize_t)iface->addr6_len; + for (ssize_t i = 0; !change && i < len; ++i) { + if (!IN6_ARE_ADDR_EQUAL(&addr[i].addr.in6, &iface->addr6[i].addr.in6) || + (addr[i].preferred > (uint32_t)now) != (iface->addr6[i].preferred > (uint32_t)now) || + addr[i].valid < iface->addr6[i].valid || addr[i].preferred < iface->addr6[i].preferred) + change = true; + } + } + iface->addr6 = addr; iface->addr6_len = len; - call_netevent_handler_list(NETEV_ADDR6LIST_CHANGE, &event_info); + if (change) + call_netevent_handler_list(NETEV_ADDR6LIST_CHANGE, &event_info); free(event_info.addrs_old.addrs); - if (len) { - addr = malloc(len * sizeof(*addr)); - if (!addr) - return; + if (!len) + continue; - memcpy(addr, iface->addr6, len * sizeof(*addr)); - } + addr = malloc(len * sizeof(*addr)); + if (!addr) + break; + + memcpy(addr, iface->addr6, len * sizeof(*addr)); } free(addr); -- 2.30.2