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Refactoring also net_roa_check
Having 4 functions doing almost the same is more mess than three macros.
This commit is contained in:
Maria Matejka
parent
54ddf90f63
commit
bb094fb6c7
179
nest/rt-table.c
179
nest/rt-table.c
@ -268,129 +268,14 @@ net_route(rtable *tab, const net_addr *n)
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default:
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return NULL;
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}
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#undef TW
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#undef FW
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#undef FVR_IP
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#undef FVR_VPN
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}
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static int
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net_roa_check_ip4_trie(rtable *tab, const net_addr_ip4 *px, u32 asn)
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{
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int anything = 0;
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TRIE_WALK_TO_ROOT_IP4(tab->trie, px, px0)
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{
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net_addr_roa4 roa0 = NET_ADDR_ROA4(px0.prefix, px0.pxlen, 0, 0);
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struct fib_node *fn;
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for (fn = fib_get_chain(&tab->fib, (net_addr *) &roa0); fn; fn = fn->next)
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{
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net_addr_roa4 *roa = (void *) fn->addr;
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net *r = fib_node_to_user(&tab->fib, fn);
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if (net_equal_prefix_roa4(roa, &roa0) && rte_is_valid(r->routes))
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{
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anything = 1;
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if (asn && (roa->asn == asn) && (roa->max_pxlen >= px->pxlen))
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return ROA_VALID;
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}
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}
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}
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TRIE_WALK_TO_ROOT_END;
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return anything ? ROA_INVALID : ROA_UNKNOWN;
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}
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static int
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net_roa_check_ip4_fib(rtable *tab, const net_addr_ip4 *px, u32 asn)
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{
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struct net_addr_roa4 n = NET_ADDR_ROA4(px->prefix, px->pxlen, 0, 0);
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struct fib_node *fn;
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int anything = 0;
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while (1)
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{
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for (fn = fib_get_chain(&tab->fib, (net_addr *) &n); fn; fn = fn->next)
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{
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net_addr_roa4 *roa = (void *) fn->addr;
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net *r = fib_node_to_user(&tab->fib, fn);
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if (net_equal_prefix_roa4(roa, &n) && rte_is_valid(r->routes))
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{
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anything = 1;
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if (asn && (roa->asn == asn) && (roa->max_pxlen >= px->pxlen))
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return ROA_VALID;
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}
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}
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if (n.pxlen == 0)
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break;
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n.pxlen--;
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ip4_clrbit(&n.prefix, n.pxlen);
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}
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return anything ? ROA_INVALID : ROA_UNKNOWN;
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}
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static int
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net_roa_check_ip6_trie(rtable *tab, const net_addr_ip6 *px, u32 asn)
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{
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int anything = 0;
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TRIE_WALK_TO_ROOT_IP6(tab->trie, px, px0)
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{
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net_addr_roa6 roa0 = NET_ADDR_ROA6(px0.prefix, px0.pxlen, 0, 0);
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struct fib_node *fn;
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for (fn = fib_get_chain(&tab->fib, (net_addr *) &roa0); fn; fn = fn->next)
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{
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net_addr_roa6 *roa = (void *) fn->addr;
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net *r = fib_node_to_user(&tab->fib, fn);
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if (net_equal_prefix_roa6(roa, &roa0) && rte_is_valid(r->routes))
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{
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anything = 1;
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if (asn && (roa->asn == asn) && (roa->max_pxlen >= px->pxlen))
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return ROA_VALID;
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}
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}
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}
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TRIE_WALK_TO_ROOT_END;
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return anything ? ROA_INVALID : ROA_UNKNOWN;
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}
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static int
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net_roa_check_ip6_fib(rtable *tab, const net_addr_ip6 *px, u32 asn)
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{
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struct net_addr_roa6 n = NET_ADDR_ROA6(px->prefix, px->pxlen, 0, 0);
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struct fib_node *fn;
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int anything = 0;
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while (1)
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{
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for (fn = fib_get_chain(&tab->fib, (net_addr *) &n); fn; fn = fn->next)
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{
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net_addr_roa6 *roa = (void *) fn->addr;
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net *r = fib_node_to_user(&tab->fib, fn);
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if (net_equal_prefix_roa6(roa, &n) && rte_is_valid(r->routes))
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{
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anything = 1;
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if (asn && (roa->asn == asn) && (roa->max_pxlen >= px->pxlen))
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return ROA_VALID;
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}
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}
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if (n.pxlen == 0)
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break;
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n.pxlen--;
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ip6_clrbit(&n.prefix, n.pxlen);
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}
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return anything ? ROA_INVALID : ROA_UNKNOWN;
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}
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/**
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* roa_check - check validity of route origination in a ROA table
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* @tab: ROA table
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@ -409,22 +294,56 @@ net_roa_check_ip6_fib(rtable *tab, const net_addr_ip6 *px, u32 asn)
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int
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net_roa_check(rtable *tab, const net_addr *n, u32 asn)
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{
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net_addr_union *nu = SKIP_BACK(net_addr_union, n, n);
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int anything = 0;
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struct fib_node *fn;
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#define TW(ipv) do { \
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TRIE_WALK_TO_ROOT_IP##ipv(tab->trie, &(nu->ip##ipv), var) { \
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net_addr_roa##ipv roa0 = NET_ADDR_ROA##ipv(var.prefix, var.pxlen, 0, 0); \
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ROA_PARTIAL_CHECK(ipv); \
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} TRIE_WALK_TO_ROOT_END; \
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return anything ? ROA_INVALID : ROA_UNKNOWN; \
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} while (0)
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#define FW(ipv) do { \
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net_addr_roa##ipv roa0 = NET_ADDR_ROA##ipv(nu->ip##ipv.prefix, nu->ip##ipv.pxlen, 0, 0);\
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while (1) { \
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ROA_PARTIAL_CHECK(ipv); \
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if (roa0.pxlen == 0) break; \
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roa0.pxlen--; ip##ipv##_clrbit(&roa0.prefix, roa0.pxlen); \
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} \
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} while (0)
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#define ROA_PARTIAL_CHECK(ipv) do { \
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for (fn = fib_get_chain(&tab->fib, (net_addr *) &roa0); fn; fn = fn->next) \
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{ \
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net_addr_roa##ipv *roa = (void *) fn->addr; \
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net *r = fib_node_to_user(&tab->fib, fn); \
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if (net_equal_prefix_roa##ipv(roa, &roa0) && rte_is_valid(r->routes)) \
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{ \
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anything = 1; \
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if (asn && (roa->asn == asn) && (roa->max_pxlen >= nu->ip##ipv.pxlen)) \
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return ROA_VALID; \
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} \
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} \
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} while (0)
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if ((tab->addr_type == NET_ROA4) && (n->type == NET_IP4))
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{
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if (tab->trie)
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return net_roa_check_ip4_trie(tab, (const net_addr_ip4 *) n, asn);
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else
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return net_roa_check_ip4_fib (tab, (const net_addr_ip4 *) n, asn);
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if (tab->trie) TW(4);
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else FW(4);
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}
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else if ((tab->addr_type == NET_ROA6) && (n->type == NET_IP6))
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{
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if (tab->trie)
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return net_roa_check_ip6_trie(tab, (const net_addr_ip6 *) n, asn);
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else
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return net_roa_check_ip6_fib (tab, (const net_addr_ip6 *) n, asn);
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if (tab->trie) TW(6);
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else FW(6);
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}
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else
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return ROA_UNKNOWN; /* Should not happen */
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return anything ? ROA_INVALID : ROA_UNKNOWN;
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#undef ROA_PARTIAL_CHECK
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#undef TW
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#undef FW
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}
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/**
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