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-rw-r--r--icmp.c34
-rw-r--r--icmp.h13
-rw-r--r--passt.c10
-rw-r--r--passt.h7
-rw-r--r--util.c4
5 files changed, 24 insertions, 44 deletions
diff --git a/icmp.c b/icmp.c
index 220dcd1..76bb9e9 100644
--- a/icmp.c
+++ b/icmp.c
@@ -49,19 +49,19 @@
#define SOCKSIDE 0
#define TAPSIDE 1
+#define PINGF(idx) (&(FLOW(idx)->ping))
+
/* Indexed by ICMP echo identifier */
static struct icmp_ping_flow *icmp_id_map[IP_VERSIONS][ICMP_NUM_IDS];
/**
* icmp_sock_handler() - Handle new data from ICMP or ICMPv6 socket
* @c: Execution context
- * @af: Address family (AF_INET or AF_INET6)
* @ref: epoll reference
*/
-void icmp_sock_handler(const struct ctx *c, sa_family_t af, union epoll_ref ref)
+void icmp_sock_handler(const struct ctx *c, union epoll_ref ref)
{
- struct icmp_ping_flow *pingf = af == AF_INET
- ? icmp_id_map[V4][ref.icmp.id] : icmp_id_map[V6][ref.icmp.id];
+ struct icmp_ping_flow *pingf = PINGF(ref.flowside.flow);
union sockaddr_inany sr;
socklen_t sl = sizeof(sr);
char buf[USHRT_MAX];
@@ -78,27 +78,26 @@ void icmp_sock_handler(const struct ctx *c, sa_family_t af, union epoll_ref ref)
flow_err(pingf, "recvfrom() error: %s", strerror(errno));
return;
}
- if (sr.sa_family != af)
- goto unexpected;
- if (af == AF_INET) {
+ if (pingf->f.type == FLOW_PING4) {
struct icmphdr *ih4 = (struct icmphdr *)buf;
- if ((size_t)n < sizeof(*ih4) || ih4->type != ICMP_ECHOREPLY)
+ if (sr.sa_family != AF_INET || (size_t)n < sizeof(*ih4) ||
+ ih4->type != ICMP_ECHOREPLY)
goto unexpected;
/* Adjust packet back to guest-side ID */
- ih4->un.echo.id = htons(ref.icmp.id);
+ ih4->un.echo.id = htons(pingf->id);
seq = ntohs(ih4->un.echo.sequence);
- } else if (af == AF_INET6) {
+ } else if (pingf->f.type == FLOW_PING6) {
struct icmp6hdr *ih6 = (struct icmp6hdr *)buf;
- if ((size_t)n < sizeof(*ih6) ||
+ if (sr.sa_family != AF_INET6 || (size_t)n < sizeof(*ih6) ||
ih6->icmp6_type != ICMPV6_ECHO_REPLY)
goto unexpected;
/* Adjust packet back to guest-side ID */
- ih6->icmp6_identifier = htons(ref.icmp.id);
+ ih6->icmp6_identifier = htons(pingf->id);
seq = ntohs(ih6->icmp6_sequence);
} else {
ASSERT(0);
@@ -113,11 +112,11 @@ void icmp_sock_handler(const struct ctx *c, sa_family_t af, union epoll_ref ref)
}
flow_dbg(pingf, "echo reply to tap, ID: %"PRIu16", seq: %"PRIu16,
- ref.icmp.id, seq);
+ pingf->id, seq);
- if (af == AF_INET)
+ if (pingf->f.type == FLOW_PING4)
tap_icmp4_send(c, sr.sa4.sin_addr, tap_ip4_daddr(c), buf, n);
- else if (af == AF_INET6)
+ else if (pingf->f.type == FLOW_PING6)
tap_icmp6_send(c, &sr.sa6.sin6_addr,
tap_ip6_daddr(c, &sr.sa6.sin6_addr), buf, n);
return;
@@ -159,7 +158,7 @@ static struct icmp_ping_flow *icmp_ping_new(const struct ctx *c,
sa_family_t af, uint16_t id)
{
uint8_t flowtype = af == AF_INET ? FLOW_PING4 : FLOW_PING6;
- union icmp_epoll_ref iref = { .id = id };
+ union epoll_ref ref = { .type = EPOLL_TYPE_PING };
union flow *flow = flow_alloc();
struct icmp_ping_flow *pingf;
const void *bind_addr;
@@ -181,8 +180,9 @@ static struct icmp_ping_flow *icmp_ping_new(const struct ctx *c,
bind_if = c->ip6.ifname_out;
}
+ ref.flowside = FLOW_SIDX(flow, SOCKSIDE);
pingf->sock = sock_l4(c, af, flow_proto[flowtype], bind_addr, bind_if,
- 0, iref.u32);
+ 0, ref.data);
if (pingf->sock < 0) {
warn("Cannot open \"ping\" socket. You might need to:");
diff --git a/icmp.h b/icmp.h
index 4f695da..5ce22b5 100644
--- a/icmp.h
+++ b/icmp.h
@@ -11,24 +11,13 @@
struct ctx;
struct icmp_ping_flow;
-void icmp_sock_handler(const struct ctx *c, sa_family_t af, union epoll_ref ref);
+void icmp_sock_handler(const struct ctx *c, union epoll_ref ref);
int icmp_tap_handler(const struct ctx *c, uint8_t pif, sa_family_t af,
const void *saddr, const void *daddr,
const struct pool *p, const struct timespec *now);
void icmp_init(void);
/**
- * union icmp_epoll_ref - epoll reference portion for ICMP tracking
- * @v6: Set for IPv6 sockets or connections
- * @u32: Opaque u32 value of reference
- * @id: Associated echo identifier, needed if bind() fails
- */
-union icmp_epoll_ref {
- uint16_t id;
- uint32_t u32;
-};
-
-/**
* struct icmp_ctx - Execution context for ICMP routines
* @timer_run: Timestamp of most recent timer run
*/
diff --git a/passt.c b/passt.c
index 0f79492..f430648 100644
--- a/passt.c
+++ b/passt.c
@@ -66,8 +66,7 @@ char *epoll_type_str[] = {
[EPOLL_TYPE_TCP_LISTEN] = "listening TCP socket",
[EPOLL_TYPE_TCP_TIMER] = "TCP timer",
[EPOLL_TYPE_UDP] = "UDP socket",
- [EPOLL_TYPE_ICMP] = "ICMP socket",
- [EPOLL_TYPE_ICMPV6] = "ICMPv6 socket",
+ [EPOLL_TYPE_PING] = "ICMP/ICMPv6 ping socket",
[EPOLL_TYPE_NSQUIT_INOTIFY] = "namespace inotify watch",
[EPOLL_TYPE_NSQUIT_TIMER] = "namespace timer watch",
[EPOLL_TYPE_TAP_PASTA] = "/dev/net/tun device",
@@ -377,11 +376,8 @@ loop:
case EPOLL_TYPE_UDP:
udp_sock_handler(&c, ref, eventmask, &now);
break;
- case EPOLL_TYPE_ICMP:
- icmp_sock_handler(&c, AF_INET, ref);
- break;
- case EPOLL_TYPE_ICMPV6:
- icmp_sock_handler(&c, AF_INET6, ref);
+ case EPOLL_TYPE_PING:
+ icmp_sock_handler(&c, ref);
break;
default:
/* Can't happen */
diff --git a/passt.h b/passt.h
index e6d4358..76026f0 100644
--- a/passt.h
+++ b/passt.h
@@ -59,10 +59,8 @@ enum epoll_type {
EPOLL_TYPE_TCP_TIMER,
/* UDP sockets */
EPOLL_TYPE_UDP,
- /* IPv4 ICMP sockets */
- EPOLL_TYPE_ICMP,
- /* ICMPv6 sockets */
- EPOLL_TYPE_ICMPV6,
+ /* ICMP/ICMPv6 ping sockets */
+ EPOLL_TYPE_PING,
/* inotify fd watching for end of netns (pasta) */
EPOLL_TYPE_NSQUIT_INOTIFY,
/* timer fd watching for end of netns, fallback for inotify (pasta) */
@@ -100,7 +98,6 @@ union epoll_ref {
flow_sidx_t flowside;
union tcp_listen_epoll_ref tcp_listen;
union udp_epoll_ref udp;
- union icmp_epoll_ref icmp;
uint32_t data;
int nsdir_fd;
};
diff --git a/util.c b/util.c
index bac5a53..3b2393d 100644
--- a/util.c
+++ b/util.c
@@ -72,10 +72,8 @@ int sock_l4(const struct ctx *c, sa_family_t af, uint8_t proto,
ref.type = EPOLL_TYPE_UDP;
break;
case IPPROTO_ICMP:
- ref.type = EPOLL_TYPE_ICMP;
- break;
case IPPROTO_ICMPV6:
- ref.type = EPOLL_TYPE_ICMPV6;
+ ref.type = EPOLL_TYPE_PING;
break;
default:
return -EPFNOSUPPORT; /* Not implemented. */
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-03 07:14:39 +0000