Commit 27e278ee authored by Rémi Denis-Courmont's avatar Rémi Denis-Courmont

net_SetCSCov: sets checksum coverages of a socket

parent 8e6998b0
......@@ -116,6 +116,8 @@ VLC_EXPORT( void, net_ListenClose, ( int *fd ) );
int net_Subscribe (vlc_object_t *obj, int fd, const struct sockaddr *addr,
socklen_t addrlen);
VLC_EXPORT( int, net_SetCSCov, ( int fd, int sendcov, int recvcov ) );
/* Functions to read from or write to the networking layer */
struct virtual_socket_t
{
......
......@@ -22,6 +22,7 @@ vlc_b64_encode
__net_Connect
__net_ConnectDgram
__net_OpenDgram
net_SetCSCov
vlc_module_set
vlc_submodule_create
libvlc_InternalCleanup
......
......@@ -60,7 +60,34 @@
# define SOL_IPV6 IPPROTO_IPV6
#endif
#ifndef IPPROTO_IPV6
# define IPPROTO_IPV6 41
# define IPPROTO_IPV6 41 /* IANA */
#endif
#ifndef SOL_DCCP
# define SOL_DCCP IPPROTO_DCCP
#endif
#ifndef IPPROTO_DCCP
# define IPPROTO_DCCP 33 /* IANA */
#endif
#ifndef SOL_UDPLITE
# define SOL_UDPLITE IPPROTO_UDPLITE
#endif
#ifndef IPPROTO_UDPLITE
# define IPPROTO_UDPLITE 136 /* IANA */
#endif
#ifdef __linux__
# include <linux/dccp.h>
# ifndef SOCK_DCCP /* provisional API */
# define SOCK_DCCP 6
# endif
#endif
#if defined (HAVE_NETINET_UDPLITE_H)
# include <netinet/udplite.h>
#elif defined (__linux__)
/* still missing from glibc 2.6 */
# define UDPLITE_SEND_CSCOV 10
# define UDPLITE_RECV_CSCOV 11
#endif
extern int net_Socket( vlc_object_t *p_this, int i_family, int i_socktype,
......@@ -802,3 +829,65 @@ int __net_OpenDgram( vlc_object_t *obj, const char *psz_bind, int i_bind,
return val;
}
/**
* net_SetCSCov:
* Sets the send and receive checksum coverage of a socket:
* @param fd socket
* @param sendcov payload coverage of sent packets (bytes), -1 for full
* @param recvcov minimum payload coverage of received packets, -1 for full
*/
int net_SetCSCov (int fd, int sendcov, int recvcov)
{
int type;
if (getsockopt (fd, SOL_SOCKET, SO_TYPE,
&type, &(socklen_t){ sizeof (type) }))
return VLC_EGENERIC;
switch (type)
{
#ifdef UDPLITE_RECV_CSCOV
case SOCK_DGRAM: /* UDP-Lite */
if (sendcov == -1)
sendcov = 0;
else
sendcov += 8; /* partial */
if (setsockopt (fd, SOL_UDPLITE, UDPLITE_SEND_CSCOV, &sendcov,
sizeof (sendcov)))
return VLC_EGENERIC;
if (recvcov == -1)
recvcov = 0;
else
recvcov += 8;
if (setsockopt (fd, SOL_UDPLITE, UDPLITE_RECV_CSCOV,
&recvcov, sizeof (recvcov)))
return VLC_EGENERIC;
return VLC_SUCCESS;
#endif
#ifdef DCCP_SOCKOPT_SEND_CSCOV
case SOCK_DCCP: /* DCCP and its ill-named socket type */
if ((sendcov == -1) || (sendcov > 56))
sendcov = 0;
else
sendcov = (sendcov + 3) / 4;
if (setsockopt (fd, SOL_DCCP, DCCP_SOCKOPT_SEND_CSCOV,
&sendcov, sizeof (sendcov)))
return VLC_EGENERIC;
if ((sendcov == -1) || (sendcov > 56))
sendcov = 0;
else
sendcov = (sendcov + 3) / 4;
if (setsockopt (fd, SOL_DCCP, DCCP_SOCKOPT_RECV_CSCOV,
&recvcov, sizeof (recvcov)))
return VLC_EGENERIC;
return VLC_SUCCESS;
#endif
}
return VLC_EGENERIC;
}
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