diff options
| -rw-r--r-- | src/platform/nm-platform.c | 95 |
1 files changed, 63 insertions, 32 deletions
diff --git a/src/platform/nm-platform.c b/src/platform/nm-platform.c index c19a6e2da5..9bbc37453c 100644 --- a/src/platform/nm-platform.c +++ b/src/platform/nm-platform.c @@ -3831,26 +3831,39 @@ delete_and_next2: return TRUE; } -static guint -ip6_address_scope_priority (const struct in6_addr *addr) +typedef enum { + IP6_ADDR_SCOPE_LOOPBACK, + IP6_ADDR_SCOPE_LINKLOCAL, + IP6_ADDR_SCOPE_SITELOCAL, + IP6_ADDR_SCOPE_OTHER, +} IP6AddrScope; + +static IP6AddrScope +ip6_address_scope (const NMPlatformIP6Address *a) { - if (IN6_IS_ADDR_LINKLOCAL (addr)) - return 1; - if (IN6_IS_ADDR_SITELOCAL (addr)) - return 2; - return 3; + if (IN6_IS_ADDR_LOOPBACK (&a->address)) + return IP6_ADDR_SCOPE_LOOPBACK; + if (IN6_IS_ADDR_LINKLOCAL (&a->address)) + return IP6_ADDR_SCOPE_LINKLOCAL; + if (IN6_IS_ADDR_SITELOCAL (&a->address)) + return IP6_ADDR_SCOPE_SITELOCAL; + return IP6_ADDR_SCOPE_OTHER; } static int -ip6_address_scope_cmp (gconstpointer a, gconstpointer b, gpointer increasing) +ip6_address_scope_cmp (gconstpointer p_a, gconstpointer p_b, gpointer increasing) { - const NMPlatformIP6Address *x = NMP_OBJECT_CAST_IP6_ADDRESS (*(const void **) a); - const NMPlatformIP6Address *y = NMP_OBJECT_CAST_IP6_ADDRESS (*(const void **) b); - int ret; + const NMPlatformIP6Address *a; + const NMPlatformIP6Address *b; + + if (!increasing) + NM_SWAP (p_a, p_b); - ret = ip6_address_scope_priority (&x->address) - ip6_address_scope_priority (&y->address); + a = NMP_OBJECT_CAST_IP6_ADDRESS (*(const NMPObject *const*) p_a); + b = NMP_OBJECT_CAST_IP6_ADDRESS (*(const NMPObject *const*) p_b); - return GPOINTER_TO_INT (increasing) ? ret : -ret; + NM_CMP_DIRECT (ip6_address_scope (a), ip6_address_scope (b)); + return 0; } /** @@ -3906,6 +3919,8 @@ nm_platform_ip6_address_sync (NMPlatform *self, if (plat_addresses) { guint known_addresses_len; + IP6AddrScope cur_scope; + gboolean delete_remaining_addrs; g_ptr_array_sort_with_data (plat_addresses, ip6_address_scope_cmp, GINT_TO_POINTER (FALSE)); @@ -3959,38 +3974,54 @@ clear_and_next: * selection will choose addresses in the order as they are reported by kernel. * Note that the order in @plat_addresses of the remaining matches is highest * priority first. - * We need to compare this to the order in @known_addresses (which has lowest - * priority first). + * We need to compare this to the order of addresses with same scope in + * @known_addresses (which has lowest priority first). * * If we find a first discrepancy, we need to delete all remaining addresses - * from that point on, because below we must re-add all the addresses in the - * right order to get their priority right. */ + * with same scope from that point on, because below we must re-add all the + * addresses in the right order to get their priority right. */ + cur_scope = IP6_ADDR_SCOPE_LOOPBACK; + delete_remaining_addrs = FALSE; i_plat = plat_addresses->len; i_know = 0; while (i_plat > 0) { const NMPlatformIP6Address *plat_addr = NMP_OBJECT_CAST_IP6_ADDRESS (plat_addresses->pdata[--i_plat]); + IP6AddrScope plat_scope; if (!plat_addr) continue; - for (; i_know < known_addresses_len; i_know++) { - const NMPlatformIP6Address *know_addr = NMP_OBJECT_CAST_IP6_ADDRESS (known_addresses->pdata[i_know]); + plat_scope = ip6_address_scope (plat_addr); + if (cur_scope != plat_scope) { + nm_assert (cur_scope < plat_scope); + delete_remaining_addrs = FALSE; + cur_scope = plat_scope; + } - if (!know_addr) - continue; + if (!delete_remaining_addrs) { + delete_remaining_addrs = TRUE; + for (; i_know < known_addresses_len; i_know++) { + const NMPlatformIP6Address *know_addr = NMP_OBJECT_CAST_IP6_ADDRESS (known_addresses->pdata[i_know]); + IP6AddrScope know_scope; - if (IN6_ARE_ADDR_EQUAL (&plat_addr->address, &know_addr->address)) { - /* we have a match. Mark address as handled. */ - i_know++; - goto next_plat; - } + if (!know_addr) + continue; - /* all remainging addresses need to be removed as well, so that we can - * re-add them in the correct order. Signal that, by setting @i_know - * so that the next @i_plat iteration, we won't enter the loop and - * delete the address right away */ - i_know = known_addresses_len; - break; + know_scope = ip6_address_scope (know_addr); + if (know_scope < plat_scope) + continue; + + if (IN6_ARE_ADDR_EQUAL (&plat_addr->address, &know_addr->address)) { + /* we have a match. Mark address as handled. */ + i_know++; + delete_remaining_addrs = FALSE; + goto next_plat; + } + + /* plat_address has no match. Now delete_remaining_addrs is TRUE and we will + * delete all the remaining addresses with cur_scope. */ + break; + } } nm_platform_ip6_address_delete (self, ifindex, plat_addr->address, plat_addr->plen); |