/**
* Attempt to transmit PeerDist discovery requests on all sockets
*
* @v uuid Message UUID string
* @v id Segment identifier string
*/
static void peerdisc_socket_tx ( const char *uuid, const char *id ) {
struct peerdisc_socket *socket;
struct net_device *netdev;
struct xfer_metadata meta;
union {
struct sockaddr sa;
struct sockaddr_tcpip st;
} address;
char *request;
size_t len;
int rc;
/* Construct discovery request */
request = peerdist_discovery_request ( uuid, id );
if ( ! request )
goto err_request;
len = strlen ( request );
/* Initialise data transfer metadata */
memset ( &meta, 0, sizeof ( meta ) );
meta.dest = &address.sa;
/* Send message on each socket */
for_each_table_entry ( socket, PEERDISC_SOCKETS ) {
/* Initialise socket address */
memcpy ( &address.sa, &socket->address.sa,
sizeof ( address.sa ) );
/* Send message on each open network device */
for_each_netdev ( netdev ) {
/* Skip unopened network devices */
if ( ! netdev_is_open ( netdev ) )
continue;
address.st.st_scope_id = netdev->index;
/* Discard request (for test purposes) if applicable */
if ( inject_fault ( PEERDISC_DISCARD_RATE ) )
continue;
/* Transmit request */
if ( ( rc = xfer_deliver_raw_meta ( &socket->xfer,
request, len,
&meta ) ) != 0 ) {
DBGC ( socket, "PEERDISC %s could not transmit "
"via %s: %s\n", socket->name,
netdev->name, strerror ( rc ) );
/* Contine to try other net devices/sockets */
continue;
}
}
}
/**
* Transmit Fibre Channel ELS frame
*
* @v els Fibre Channel ELS transaction
* @v data Data to transmit
* @v len Length of data
* @ret rc Return status code
*/
int fc_els_tx ( struct fc_els *els, const void *data, size_t len ) {
struct xfer_metadata meta;
struct sockaddr_fc dest;
int rc;
DBGC2 ( els, FCELS_FMT " transmitting:\n", FCELS_ARGS ( els ) );
DBGC2_HDA ( els, 0, data, len );
/* Construct metadata */
memset ( &meta, 0, sizeof ( meta ) );
meta.flags = ( fc_els_is_request ( els ) ?
XFER_FL_OVER : ( XFER_FL_RESPONSE | XFER_FL_OUT ) );
meta.dest = fc_fill_sockaddr ( &dest, &els->peer_port_id );
/* Transmit frame */
if ( ( rc = xfer_deliver_raw_meta ( &els->xchg, data, len,
&meta ) ) != 0 ) {
DBGC ( els, FCELS_FMT " could not deliver frame: %s\n",
FCELS_ARGS ( els ), strerror ( rc ) );
return rc;
}
return 0;
}
/**
* Deliver datagram as raw data without metadata
*
* @v intf Data transfer interface
* @v data Data
* @v len Length of data
* @ret rc Return status code
*/
int xfer_deliver_raw ( struct interface *intf, const void *data, size_t len ) {
return xfer_deliver_raw_meta ( intf, data, len, &dummy_metadata );
}
