diff options
Diffstat (limited to 'udp.c')
| -rw-r--r-- | udp.c | 92 |
1 files changed, 1 insertions, 91 deletions
@@ -114,38 +114,10 @@ #define UDP_CONN_TIMEOUT 180 /* s, timeout for ephemeral or local bind */ #define UDP_MAX_FRAMES 32 /* max # of frames to receive at once */ -/** - * struct udp_tap_port - Port tracking based on tap-facing source port - * @sock: Socket bound to source port used as index - * @flags: Flags for recent activity type seen from/to port - * @ts: Activity timestamp from tap, used for socket aging - */ -struct udp_tap_port { - int sock; - uint8_t flags; -#define PORT_LOCAL BIT(0) /* Port was contacted from local address */ -#define PORT_LOOPBACK BIT(1) /* Port was contacted from loopback address */ -#define PORT_GUA BIT(2) /* Port was contacted from global unicast */ -#define PORT_DNS_FWD BIT(3) /* Port used as source for DNS remapped query */ - - time_t ts; -}; - -/* Port tracking, arrays indexed by packet source port (host order) */ -static struct udp_tap_port udp_tap_map [IP_VERSIONS][NUM_PORTS]; - /* "Spliced" sockets indexed by bound port (host order) */ static int udp_splice_ns [IP_VERSIONS][NUM_PORTS]; static int udp_splice_init[IP_VERSIONS][NUM_PORTS]; -enum udp_act_type { - UDP_ACT_TAP, - UDP_ACT_TYPE_MAX, -}; - -/* Activity-based aging for bindings */ -static uint8_t udp_act[IP_VERSIONS][UDP_ACT_TYPE_MAX][DIV_ROUND_UP(NUM_PORTS, 8)]; - /* Static buffers */ /** @@ -228,7 +200,6 @@ void udp_portmap_clear(void) unsigned i; for (i = 0; i < NUM_PORTS; i++) { - udp_tap_map[V4][i].sock = udp_tap_map[V6][i].sock = -1; udp_splice_ns[V4][i] = udp_splice_ns[V6][i] = -1; udp_splice_init[V4][i] = udp_splice_init[V6][i] = -1; } @@ -1047,7 +1018,6 @@ int udp_sock_init(const struct ctx *c, int ns, sa_family_t af, r4 = s = sock_l4(c, AF_INET, EPOLL_TYPE_UDP, addr, ifname, port, uref.u32); - udp_tap_map[V4][port].sock = s < 0 ? -1 : s; udp_splice_init[V4][port] = s < 0 ? -1 : s; } else { r4 = s = sock_l4(c, AF_INET, EPOLL_TYPE_UDP, @@ -1064,7 +1034,6 @@ int udp_sock_init(const struct ctx *c, int ns, sa_family_t af, r6 = s = sock_l4(c, AF_INET6, EPOLL_TYPE_UDP, addr, ifname, port, uref.u32); - udp_tap_map[V6][port].sock = s < 0 ? -1 : s; udp_splice_init[V6][port] = s < 0 ? -1 : s; } else { r6 = s = sock_l4(c, AF_INET6, EPOLL_TYPE_UDP, @@ -1101,43 +1070,6 @@ static void udp_splice_iov_init(void) } /** - * udp_timer_one() - Handler for timed events on one port - * @c: Execution context - * @v6: Set for IPv6 connections - * @type: Socket type - * @port: Port number, host order - * @now: Current timestamp - */ -static void udp_timer_one(struct ctx *c, int v6, enum udp_act_type type, - in_port_t port, const struct timespec *now) -{ - struct udp_tap_port *tp; - int *sockp = NULL; - - switch (type) { - case UDP_ACT_TAP: - tp = &udp_tap_map[v6 ? V6 : V4][port]; - - if (now->tv_sec - tp->ts > UDP_CONN_TIMEOUT) { - sockp = &tp->sock; - tp->flags = 0; - } - - break; - default: - return; - } - - if (sockp && *sockp >= 0) { - int s = *sockp; - *sockp = -1; - epoll_ctl(c->epollfd, EPOLL_CTL_DEL, s, NULL); - close(s); - bitmap_clear(udp_act[v6 ? V6 : V4][type], port); - } -} - -/** * udp_port_rebind() - Rebind ports to match forward maps * @c: Execution context * @outbound: True to remap outbound forwards, otherwise inbound @@ -1221,9 +1153,7 @@ bool udp_flow_timer(const struct ctx *c, struct udp_flow *uflow, */ void udp_timer(struct ctx *c, const struct timespec *now) { - int n, t, v6 = 0; - unsigned int i; - long *word, tmp; + (void)now; ASSERT(!c->no_udp); @@ -1240,26 +1170,6 @@ void udp_timer(struct ctx *c, const struct timespec *now) udp_port_rebind(c, false); } } - - if (!c->ifi4) - v6 = 1; -v6: - for (t = 0; t < UDP_ACT_TYPE_MAX; t++) { - word = (long *)udp_act[v6 ? V6 : V4][t]; - for (i = 0; i < ARRAY_SIZE(udp_act[0][0]); - i += sizeof(long), word++) { - tmp = *word; - while ((n = ffsl(tmp))) { - tmp &= ~(1UL << (n - 1)); - udp_timer_one(c, v6, t, i * 8 + n - 1, now); - } - } - } - - if (!v6 && c->ifi6) { - v6 = 1; - goto v6; - } } /** |