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osmo_mcast_sock: make sure SO_REUSEADDR is applied 

osmo-bts-virtual uses UDP multicast to communicate with its virtphy
counterpart. At the momemnt SO_REUSEADDR is not applied for those
multicast connections because OSMO_SOCK_F_UDP_REUSEADDR is not set. This
makes prevents the proper function of UDP multicast.

- Make sure OSMO_SOCK_F_UDP_REUSEADDR is set

Change-Id: I7f27758b7aa786c8dbae669cbcde10baab8e4845
Depends: libosmocore I1399a428467ca12f1564a14eb8ffb294d4f59874
Related: OS#3497
This commit is contained in:
Philipp Maier 2018-08-23 20:24:06 +02:00
parent 0b2893f6fc
commit 0e11bea2a7
1 changed files with 3 additions and 2 deletions
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5
src/osmo-bts-virtual/osmo_mcast_sock.c
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@ -17,7 +17,7 @@ int mcast_server_sock_setup(struct osmo_fd *ofd, const char* tx_mcast_group,
uint16_t tx_mcast_port, bool loopback)
{
int rc;
unsigned int flags = OSMO_SOCK_F_CONNECT;
unsigned int flags = OSMO_SOCK_F_CONNECT | OSMO_SOCK_F_UDP_REUSEADDR;
if (!loopback)
flags |= OSMO_SOCK_F_NO_MCAST_LOOP;
@ -41,6 +41,7 @@ int mcast_client_sock_setup(struct osmo_fd *ofd, const char *mcast_group, uint16
void *osmo_fd_data)
{
int rc;
unsigned int flags = OSMO_SOCK_F_BIND | OSMO_SOCK_F_NO_MCAST_ALL | OSMO_SOCK_F_UDP_REUSEADDR;
ofd->cb = fd_rx_cb;
ofd->when = BSC_FD_READ;
@ -48,7 +49,7 @@ int mcast_client_sock_setup(struct osmo_fd *ofd, const char *mcast_group, uint16
/* Create mcast client socket */
rc = osmo_sock_init_ofd(ofd, AF_INET, SOCK_DGRAM, IPPROTO_UDP,
NULL, mcast_port, OSMO_SOCK_F_BIND|OSMO_SOCK_F_NO_MCAST_ALL);
NULL, mcast_port, flags);
if (rc < 0) {
perror("Could not create mcast client socket");
return rc;