The vhost-user and non-vhost-user paths for both udp_listen_sock_handler()
and udp_reply_sock_handler() are more or less completely separate. Both,
however, start with essentially the same invocation of udp_sock_errs(), so
that can be made common.
Signed-off-by: David Gibson <david(a)gibson.dropbear.id.au>
---
udp.c | 37 ++++++++++++++++++++-----------------
udp_internal.h | 2 +-
udp_vu.c | 15 ---------------
3 files changed, 21 insertions(+), 33 deletions(-)
diff --git a/udp.c b/udp.c
index 88128181..ca101fec 100644
--- a/udp.c
+++ b/udp.c
@@ -587,7 +587,8 @@ static int udp_sock_recverr(const struct ctx *c, union epoll_ref ref)
*
* Return: Number of errors handled, or < 0 if we have an unrecoverable error
*/
-int udp_sock_errs(const struct ctx *c, union epoll_ref ref, uint32_t events)
+static int udp_sock_errs(const struct ctx *c, union epoll_ref ref,
+ uint32_t events)
{
unsigned n_err = 0;
socklen_t errlen;
@@ -680,13 +681,6 @@ static void udp_buf_listen_sock_handler(const struct ctx *c,
const socklen_t sasize = sizeof(udp_meta[0].s_in);
int n, i;
- if (udp_sock_errs(c, ref, events) < 0) {
- err("UDP: Unrecoverable error on listening socket:"
- " (%s port %hu)", pif_name(ref.udp.pif), ref.udp.port);
- /* FIXME: what now? close/re-open socket? */
- return;
- }
-
if ((n = udp_sock_recv(c, ref.fd, events, udp_mh_recv)) <= 0)
return;
@@ -752,6 +746,13 @@ void udp_listen_sock_handler(const struct ctx *c,
union epoll_ref ref, uint32_t events,
const struct timespec *now)
{
+ if (udp_sock_errs(c, ref, events) < 0) {
+ err("UDP: Unrecoverable error on listening socket:"
+ " (%s port %hu)", pif_name(ref.udp.pif), ref.udp.port);
+ /* FIXME: what now? close/re-open socket? */
+ return;
+ }
+
if (c->mode == MODE_VU) {
udp_vu_listen_sock_handler(c, ref, events, now);
return;
@@ -779,17 +780,8 @@ static void udp_buf_reply_sock_handler(const struct ctx *c, union
epoll_ref ref,
uint8_t topif = pif_at_sidx(tosidx);
int n, i, from_s;
- ASSERT(!c->no_udp && uflow);
-
from_s = uflow->s[ref.flowside.sidei];
- if (udp_sock_errs(c, ref, events) < 0) {
- flow_err(uflow, "Unrecoverable error on reply socket");
- flow_err_details(uflow);
- udp_flow_close(c, uflow);
- return;
- }
-
if ((n = udp_sock_recv(c, from_s, events, udp_mh_recv)) <= 0)
return;
@@ -827,6 +819,17 @@ static void udp_buf_reply_sock_handler(const struct ctx *c, union
epoll_ref ref,
void udp_reply_sock_handler(const struct ctx *c, union epoll_ref ref,
uint32_t events, const struct timespec *now)
{
+ struct udp_flow *uflow = udp_at_sidx(ref.flowside);
+
+ ASSERT(!c->no_udp && uflow);
+
+ if (udp_sock_errs(c, ref, events) < 0) {
+ flow_err(uflow, "Unrecoverable error on reply socket");
+ flow_err_details(uflow);
+ udp_flow_close(c, uflow);
+ return;
+ }
+
if (c->mode == MODE_VU) {
udp_vu_reply_sock_handler(c, ref, events, now);
return;
diff --git a/udp_internal.h b/udp_internal.h
index 3b081f54..02724e59 100644
--- a/udp_internal.h
+++ b/udp_internal.h
@@ -30,5 +30,5 @@ size_t udp_update_hdr4(struct iphdr *ip4h, struct udp_payload_t *bp,
size_t udp_update_hdr6(struct ipv6hdr *ip6h, struct udp_payload_t *bp,
const struct flowside *toside, size_t dlen,
bool no_udp_csum);
-int udp_sock_errs(const struct ctx *c, union epoll_ref ref, uint32_t events);
+
#endif /* UDP_INTERNAL_H */
diff --git a/udp_vu.c b/udp_vu.c
index c26a223d..84f52aff 100644
--- a/udp_vu.c
+++ b/udp_vu.c
@@ -227,12 +227,6 @@ void udp_vu_listen_sock_handler(const struct ctx *c, union epoll_ref
ref,
struct vu_virtq *vq = &vdev->vq[VHOST_USER_RX_QUEUE];
int i;
- if (udp_sock_errs(c, ref, events) < 0) {
- err("UDP: Unrecoverable error on listening socket:"
- " (%s port %hu)", pif_name(ref.udp.pif), ref.udp.port);
- return;
- }
-
for (i = 0; i < UDP_MAX_FRAMES; i++) {
const struct flowside *toside;
union sockaddr_inany s_in;
@@ -300,15 +294,6 @@ void udp_vu_reply_sock_handler(const struct ctx *c, union epoll_ref
ref,
struct vu_virtq *vq = &vdev->vq[VHOST_USER_RX_QUEUE];
int i;
- ASSERT(!c->no_udp);
-
- if (udp_sock_errs(c, ref, events) < 0) {
- flow_err(uflow, "Unrecoverable error on reply socket");
- flow_err_details(uflow);
- udp_flow_close(c, uflow);
- return;
- }
-
for (i = 0; i < UDP_MAX_FRAMES; i++) {
uint8_t topif = pif_at_sidx(tosidx);
ssize_t dlen;
--
2.49.0