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Diffstat (limited to 'src/network/networkd-routing-policy-rule.c')
-rw-r--r--src/network/networkd-routing-policy-rule.c122
1 files changed, 83 insertions, 39 deletions
diff --git a/src/network/networkd-routing-policy-rule.c b/src/network/networkd-routing-policy-rule.c
index 0cb5831..886b4da 100644
--- a/src/network/networkd-routing-policy-rule.c
+++ b/src/network/networkd-routing-policy-rule.c
@@ -1,5 +1,6 @@
/* SPDX-License-Identifier: LGPL-2.1-or-later */
+/* Make sure the net/if.h header is included before any linux/ one */
#include <net/if.h>
#include <linux/fib_rules.h>
@@ -156,33 +157,35 @@ static int routing_policy_rule_dup(const RoutingPolicyRule *src, RoutingPolicyRu
static void routing_policy_rule_hash_func(const RoutingPolicyRule *rule, struct siphash *state) {
assert(rule);
- siphash24_compress(&rule->family, sizeof(rule->family), state);
+ siphash24_compress_typesafe(rule->family, state);
switch (rule->family) {
case AF_INET:
case AF_INET6:
- siphash24_compress(&rule->from, FAMILY_ADDRESS_SIZE(rule->family), state);
- siphash24_compress(&rule->from_prefixlen, sizeof(rule->from_prefixlen), state);
+ in_addr_hash_func(&rule->from, rule->family, state);
+ siphash24_compress_typesafe(rule->from_prefixlen, state);
- siphash24_compress(&rule->to, FAMILY_ADDRESS_SIZE(rule->family), state);
- siphash24_compress(&rule->to_prefixlen, sizeof(rule->to_prefixlen), state);
+ siphash24_compress_boolean(rule->l3mdev, state);
+
+ in_addr_hash_func(&rule->to, rule->family, state);
+ siphash24_compress_typesafe(rule->to_prefixlen, state);
siphash24_compress_boolean(rule->invert_rule, state);
- siphash24_compress(&rule->tos, sizeof(rule->tos), state);
- siphash24_compress(&rule->type, sizeof(rule->type), state);
- siphash24_compress(&rule->fwmark, sizeof(rule->fwmark), state);
- siphash24_compress(&rule->fwmask, sizeof(rule->fwmask), state);
- siphash24_compress(&rule->priority, sizeof(rule->priority), state);
- siphash24_compress(&rule->table, sizeof(rule->table), state);
- siphash24_compress(&rule->suppress_prefixlen, sizeof(rule->suppress_prefixlen), state);
- siphash24_compress(&rule->suppress_ifgroup, sizeof(rule->suppress_ifgroup), state);
-
- siphash24_compress(&rule->ipproto, sizeof(rule->ipproto), state);
- siphash24_compress(&rule->protocol, sizeof(rule->protocol), state);
- siphash24_compress(&rule->sport, sizeof(rule->sport), state);
- siphash24_compress(&rule->dport, sizeof(rule->dport), state);
- siphash24_compress(&rule->uid_range, sizeof(rule->uid_range), state);
+ siphash24_compress_typesafe(rule->tos, state);
+ siphash24_compress_typesafe(rule->type, state);
+ siphash24_compress_typesafe(rule->fwmark, state);
+ siphash24_compress_typesafe(rule->fwmask, state);
+ siphash24_compress_typesafe(rule->priority, state);
+ siphash24_compress_typesafe(rule->table, state);
+ siphash24_compress_typesafe(rule->suppress_prefixlen, state);
+ siphash24_compress_typesafe(rule->suppress_ifgroup, state);
+
+ siphash24_compress_typesafe(rule->ipproto, state);
+ siphash24_compress_typesafe(rule->protocol, state);
+ siphash24_compress_typesafe(rule->sport, state);
+ siphash24_compress_typesafe(rule->dport, state);
+ siphash24_compress_typesafe(rule->uid_range, state);
siphash24_compress_string(rule->iif, state);
siphash24_compress_string(rule->oif, state);
@@ -212,6 +215,10 @@ static int routing_policy_rule_compare_func(const RoutingPolicyRule *a, const Ro
if (r != 0)
return r;
+ r = CMP(a->l3mdev, b->l3mdev);
+ if (r != 0)
+ return r;
+
r = CMP(a->to_prefixlen, b->to_prefixlen);
if (r != 0)
return r;
@@ -476,19 +483,19 @@ static int routing_policy_rule_set_netlink_message(const RoutingPolicyRule *rule
return r;
}
- if (rule->table < 256) {
+ if (rule->l3mdev)
+ r = sd_rtnl_message_routing_policy_rule_set_table(m, RT_TABLE_UNSPEC);
+ else if (rule->table < 256)
r = sd_rtnl_message_routing_policy_rule_set_table(m, rule->table);
- if (r < 0)
- return r;
- } else {
+ else {
r = sd_rtnl_message_routing_policy_rule_set_table(m, RT_TABLE_UNSPEC);
if (r < 0)
return r;
r = sd_netlink_message_append_u32(m, FRA_TABLE, rule->table);
- if (r < 0)
- return r;
}
+ if (r < 0)
+ return r;
if (rule->fwmark > 0) {
r = sd_netlink_message_append_u32(m, FRA_FWMARK, rule->fwmark);
@@ -544,6 +551,12 @@ static int routing_policy_rule_set_netlink_message(const RoutingPolicyRule *rule
return r;
}
+ if (rule->l3mdev) {
+ r = sd_netlink_message_append_u8(m, FRA_L3MDEV, 1);
+ if (r < 0)
+ return r;
+ }
+
if (rule->suppress_prefixlen >= 0) {
r = sd_netlink_message_append_u32(m, FRA_SUPPRESS_PREFIXLEN, (uint32_t) rule->suppress_prefixlen);
if (r < 0)
@@ -642,7 +655,7 @@ static void manager_mark_routing_policy_rules(Manager *m, bool foreign, const Li
continue;
/* When 'foreign' is true, mark only foreign rules, and vice versa. */
- if (foreign != (rule->source == NETWORK_CONFIG_SOURCE_FOREIGN))
+ if (rule->source != (foreign ? NETWORK_CONFIG_SOURCE_FOREIGN : NETWORK_CONFIG_SOURCE_STATIC))
continue;
/* Ignore rules not assigned yet or already removing. */
@@ -853,20 +866,17 @@ int link_request_static_routing_policy_rules(Link *link) {
static const RoutingPolicyRule kernel_rules[] = {
{ .family = AF_INET, .priority_set = true, .priority = 0, .table = RT_TABLE_LOCAL, .type = FR_ACT_TO_TBL, .uid_range.start = UID_INVALID, .uid_range.end = UID_INVALID, .suppress_prefixlen = -1, .suppress_ifgroup = -1, },
+ { .family = AF_INET, .priority_set = true, .priority = 1000, .table = RT_TABLE_UNSPEC, .type = FR_ACT_TO_TBL, .uid_range.start = UID_INVALID, .uid_range.end = UID_INVALID, .suppress_prefixlen = -1, .suppress_ifgroup = -1, .l3mdev = true },
{ .family = AF_INET, .priority_set = true, .priority = 32766, .table = RT_TABLE_MAIN, .type = FR_ACT_TO_TBL, .uid_range.start = UID_INVALID, .uid_range.end = UID_INVALID, .suppress_prefixlen = -1, .suppress_ifgroup = -1, },
{ .family = AF_INET, .priority_set = true, .priority = 32767, .table = RT_TABLE_DEFAULT, .type = FR_ACT_TO_TBL, .uid_range.start = UID_INVALID, .uid_range.end = UID_INVALID, .suppress_prefixlen = -1, .suppress_ifgroup = -1, },
{ .family = AF_INET6, .priority_set = true, .priority = 0, .table = RT_TABLE_LOCAL, .type = FR_ACT_TO_TBL, .uid_range.start = UID_INVALID, .uid_range.end = UID_INVALID, .suppress_prefixlen = -1, .suppress_ifgroup = -1, },
+ { .family = AF_INET6, .priority_set = true, .priority = 1000, .table = RT_TABLE_UNSPEC, .type = FR_ACT_TO_TBL, .uid_range.start = UID_INVALID, .uid_range.end = UID_INVALID, .suppress_prefixlen = -1, .suppress_ifgroup = -1, .l3mdev = true },
{ .family = AF_INET6, .priority_set = true, .priority = 32766, .table = RT_TABLE_MAIN, .type = FR_ACT_TO_TBL, .uid_range.start = UID_INVALID, .uid_range.end = UID_INVALID, .suppress_prefixlen = -1, .suppress_ifgroup = -1, },
};
static bool routing_policy_rule_is_created_by_kernel(const RoutingPolicyRule *rule) {
assert(rule);
- if (rule->l3mdev > 0)
- /* Currently, [RoutingPolicyRule] does not explicitly set FRA_L3MDEV. So, if the flag
- * is set, it is safe to treat the rule as created by kernel. */
- return true;
-
for (size_t i = 0; i < ELEMENTSOF(kernel_rules); i++)
if (routing_policy_rule_equal(rule, &kernel_rules[i]))
return true;
@@ -1016,11 +1026,13 @@ int manager_rtnl_process_rule(sd_netlink *rtnl, sd_netlink_message *message, Man
return 0;
}
- r = sd_netlink_message_read_u8(message, FRA_L3MDEV, &tmp->l3mdev);
+ uint8_t l3mdev = 0;
+ r = sd_netlink_message_read_u8(message, FRA_L3MDEV, &l3mdev);
if (r < 0 && r != -ENODATA) {
log_warning_errno(r, "rtnl: could not get FRA_L3MDEV attribute, ignoring: %m");
return 0;
}
+ tmp->l3mdev = l3mdev != 0;
r = sd_netlink_message_read(message, FRA_SPORT_RANGE, sizeof(tmp->sport), &tmp->sport);
if (r < 0 && r != -ENODATA) {
@@ -1408,7 +1420,7 @@ int config_parse_routing_policy_rule_port_range(
if (r < 0)
return log_oom();
- r = parse_ip_port_range(rvalue, &low, &high);
+ r = parse_ip_port_range(rvalue, &low, &high, /* allow_zero = */ false);
if (r < 0) {
log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse routing policy rule port range '%s'", rvalue);
return 0;
@@ -1502,6 +1514,44 @@ int config_parse_routing_policy_rule_invert(
return 0;
}
+int config_parse_routing_policy_rule_l3mdev(
+ const char *unit,
+ const char *filename,
+ unsigned line,
+ const char *section,
+ unsigned section_line,
+ const char *lvalue,
+ int ltype,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ _cleanup_(routing_policy_rule_free_or_set_invalidp) RoutingPolicyRule *n = NULL;
+ Network *network = userdata;
+ int r;
+
+ assert(filename);
+ assert(section);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ r = routing_policy_rule_new_static(network, filename, section_line, &n);
+ if (r < 0)
+ return log_oom();
+
+ r = parse_boolean(rvalue);
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse RPDB rule l3mdev, ignoring: %s", rvalue);
+ return 0;
+ }
+
+ n->l3mdev = r;
+
+ TAKE_PTR(n);
+ return 0;
+}
+
int config_parse_routing_policy_rule_family(
const char *unit,
const char *filename,
@@ -1734,12 +1784,6 @@ static int routing_policy_rule_section_verify(RoutingPolicyRule *rule) {
/* rule->family can be AF_UNSPEC only when Family=both. */
}
- /* Currently, [RoutingPolicyRule] does not have a setting to set FRA_L3MDEV flag. Please also
- * update routing_policy_rule_is_created_by_kernel() when a new setting which sets the flag is
- * added in the future. */
- if (rule->l3mdev > 0)
- assert_not_reached();
-
return 0;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-10-31 01:59:05 +0000