From 7c044e96ae66f2403e4d82005943a0f6d99bb6a7 Mon Sep 17 00:00:00 2001 From: Milan Lenco Date: Mon, 25 Jun 2018 10:49:39 +0200 Subject: Add compatibility with libmemif 2 Change-Id: Iff143c7aeb973b3f8629a7412bb956c1b8f8f81d Signed-off-by: Tomas Slusny --- extras/libmemif/README.md | 9 ++-- extras/libmemif/adapter.go | 54 ++++++++++++---------- .../examples/icmp-responder/icmp-responder.go | 7 +-- 3 files changed, 39 insertions(+), 31 deletions(-) (limited to 'extras') diff --git a/extras/libmemif/README.md b/extras/libmemif/README.md index 39a6d58..3b692b1 100644 --- a/extras/libmemif/README.md +++ b/extras/libmemif/README.md @@ -17,6 +17,8 @@ locations, execute: ``` $ git clone https://gerrit.fd.io/r/vpp $ cd vpp/extras/libmemif +$ ./bootstrap +$ ./configure $ make install ``` @@ -144,9 +146,10 @@ used to decode and construct packets. The appropriate VPP configuration for the opposite memif is: ``` -vpp$ create memif id 1 socket /tmp/icmp-responder-example slave secret secret -vpp$ set int state memif0/1 up -vpp$ set int ip address memif0/1 192.168.1.2/24 +vpp$ create memif socket id 1 filename /tmp/icmp-responder-example +vpp$ create interface memif id 1 socket-id 1 slave secret secret no-zero-copy +vpp$ set int state memif1/1 up +vpp$ set int ip address memif1/1 192.168.1.2/24 ``` To start the example, simply type: diff --git a/extras/libmemif/adapter.go b/extras/libmemif/adapter.go index 6058c94..a74c5cf 100644 --- a/extras/libmemif/adapter.go +++ b/extras/libmemif/adapter.go @@ -55,11 +55,10 @@ typedef struct uint8_t num_s2m_rings; uint8_t num_m2s_rings; uint16_t buffer_size; - memif_log2_ring_size_t log2_ring_size; + uint8_t log2_ring_size; uint8_t is_master; - memif_interface_id_t interface_id; + uint32_t interface_id; char *interface_name; - char *instance_name; memif_interface_mode_t mode; } govpp_memif_conn_args_t; @@ -124,11 +123,6 @@ govpp_memif_create (memif_conn_handle_t *conn, govpp_memif_conn_args_t *go_args, strncpy ((char *)args.interface_name, go_args->interface_name, sizeof(args.interface_name) - 1); } - if (go_args->instance_name != NULL) - { - strncpy ((char *)args.instance_name, go_args->instance_name, - sizeof (args.instance_name) - 1); - } args.mode = go_args->mode; return memif_create(conn, &args, govpp_on_connect_callback, @@ -202,10 +196,10 @@ govpp_get_tx_queue_details (govpp_memif_details_t *md, int index) // Copy packet data into the selected buffer. static void -govpp_copy_packet_data(memif_buffer_t *buffers, int index, void *data, uint32_t size) +govpp_copy_packet_data(memif_buffer_t *buffers, int index, void *data, uint16_t size) { - buffers[index].data_len = (size > buffers[index].buffer_len ? buffers[index].buffer_len : size); - memcpy(buffers[index].data, data, (size_t)buffers[index].data_len); + buffers[index].len = (size > buffers[index].len ? buffers[index].len : size); + memcpy(buffers[index].data, data, (size_t)buffers[index].len); } // Get packet data from the selected buffer. @@ -213,7 +207,7 @@ govpp_copy_packet_data(memif_buffer_t *buffers, int index, void *data, uint32_t static void * govpp_get_packet_data(memif_buffer_t *buffers, int index, int *size) { - *size = (int)buffers[index].data_len; + *size = (int)buffers[index].len; return buffers[index].data; } @@ -350,6 +344,7 @@ type Memif struct { queueIntCh []chan struct{} // per RX queue interrupt channel // Rx/Tx queues + ringSize int // number of items in each ring stopQPollFd int // event file descriptor used to stop pollRxQueue-s wg sync.WaitGroup // wait group for all pollRxQueue-s rxQueueBufs []CPacketBuffers // an array of C-libmemif packet buffers for each RX queue @@ -444,11 +439,11 @@ func Init(appName string) error { // Initialize C-libmemif. var errCode int if appName == "" { - errCode = int(C.memif_init(nil, nil)) + errCode = int(C.memif_init(nil, nil, nil, nil)) } else { appName := C.CString(appName) defer C.free(unsafe.Pointer(appName)) - errCode = int(C.memif_init(nil, appName)) + errCode = int(C.memif_init(nil, appName, nil, nil)) } err := getMemifError(errCode) if err != nil { @@ -517,11 +512,17 @@ func CreateInterface(config *MemifConfig, callbacks *MemifCallbacks) (memif *Mem log.WithField("ifName", config.IfName).Debug("Creating a new memif interface") + log2RingSize := config.Log2RingSize + if log2RingSize == 0 { + log2RingSize = 10 + } + // Create memif-wrapper for Go-libmemif. memif = &Memif{ MemifMeta: config.MemifMeta, callbacks: &MemifCallbacks{}, ifIndex: context.nextMemifIndex, + ringSize: 1 << log2RingSize, } // Initialize memif callbacks. @@ -547,17 +548,12 @@ func CreateInterface(config *MemifConfig, callbacks *MemifCallbacks) (memif *Mem defer C.free(unsafe.Pointer(args.socket_filename)) } // - interface ID - args.interface_id = C.memif_interface_id_t(config.ConnID) + args.interface_id = C.uint32_t(config.ConnID) // - interface name if config.IfName != "" { args.interface_name = C.CString(config.IfName) defer C.free(unsafe.Pointer(args.interface_name)) } - // - instance name - if config.InstanceName != "" { - args.instance_name = C.CString(config.InstanceName) - defer C.free(unsafe.Pointer(args.instance_name)) - } // - mode switch config.Mode { case IfModeEthernet: @@ -587,7 +583,7 @@ func CreateInterface(config *MemifConfig, callbacks *MemifCallbacks) (memif *Mem // - buffer size args.buffer_size = C.uint16_t(config.BufferSize) // - log_2(ring size) - args.log2_ring_size = C.memif_log2_ring_size_t(config.Log2RingSize) + args.log2_ring_size = C.uint8_t(config.Log2RingSize) // Create memif in C-libmemif. errCode := C.govpp_memif_create(&memif.cHandle, args, unsafe.Pointer(uintptr(memif.ifIndex))) @@ -757,7 +753,7 @@ func (memif *Memif) TxBurst(queueID uint8, packets []RawPacketData) (count uint1 // Allocate ring slots. cQueueID := C.uint16_t(queueID) errCode := C.memif_buffer_alloc(memif.cHandle, cQueueID, pb.buffers, C.uint16_t(bufCount), - &allocated, C.uint16_t(bufSize)) + &allocated, C.uint32_t(bufSize)) err = getMemifError(int(errCode)) if err == ErrNoBufRing { // Not enough ring slots, will be less than bufCount. @@ -770,7 +766,7 @@ func (memif *Memif) TxBurst(queueID uint8, packets []RawPacketData) (count uint1 // Copy packet data into the buffers. for i := 0; i < int(allocated); i++ { packetData := unsafe.Pointer(&packets[i][0]) - C.govpp_copy_packet_data(pb.buffers, C.int(i), packetData, C.uint32_t(len(packets[i]))) + C.govpp_copy_packet_data(pb.buffers, C.int(i), packetData, C.uint16_t(len(packets[i]))) } errCode = C.memif_tx_burst(memif.cHandle, cQueueID, pb.buffers, allocated, &sentCount) @@ -793,7 +789,6 @@ func (memif *Memif) TxBurst(queueID uint8, packets []RawPacketData) (count uint1 // Rx queue. func (memif *Memif) RxBurst(queueID uint8, count uint16) (packets []RawPacketData, err error) { var recvCount C.uint16_t - var freed C.uint16_t if count == 0 { return packets, nil @@ -836,7 +831,9 @@ func (memif *Memif) RxBurst(queueID uint8, count uint16) (packets []RawPacketDat packets = append(packets, C.GoBytes(packetData, packetSize)) } - errCode = C.memif_buffer_free(memif.cHandle, cQueueID, pb.buffers, recvCount, &freed) + if recvCount > 0 { + errCode = C.memif_refill_queue(memif.cHandle, cQueueID, recvCount, 0) + } err = getMemifError(int(errCode)) if err != nil { // Throw away packets to avoid duplicities. @@ -895,6 +892,13 @@ func (memif *Memif) initQueues() error { // Initialize Rx/Tx packet buffers. for i = 0; i < len(details.RxQueues); i++ { memif.rxQueueBufs = append(memif.rxQueueBufs, CPacketBuffers{}) + if !memif.IsMaster { + errCode := C.memif_refill_queue(memif.cHandle, C.uint16_t(i), C.uint16_t(memif.ringSize-1), 0) + err = getMemifError(int(errCode)) + if err != nil { + log.Warn(err.Error()) + } + } } for i = 0; i < len(details.TxQueues); i++ { memif.txQueueBufs = append(memif.txQueueBufs, CPacketBuffers{}) diff --git a/extras/libmemif/examples/icmp-responder/icmp-responder.go b/extras/libmemif/examples/icmp-responder/icmp-responder.go index f9867f7..5e9f2e0 100644 --- a/extras/libmemif/examples/icmp-responder/icmp-responder.go +++ b/extras/libmemif/examples/icmp-responder/icmp-responder.go @@ -3,9 +3,10 @@ // and construct packets. // // The appropriate VPP configuration for the opposite memif is: -// vpp$ create memif id 1 socket /tmp/icmp-responder-example slave secret secret -// vpp$ set int state memif0/1 up -// vpp$ set int ip address memif0/1 192.168.1.2/24 +// vpp$ create memif socket id 1 filename /tmp/icmp-responder-example +// vpp$ create interface memif id 1 socket-id 1 slave secret secret no-zero-copy +// vpp$ set int state memif1/1 up +// vpp$ set int ip address memif1/1 192.168.1.2/24 // // To start the example, simply type: // root$ ./icmp-responder -- cgit 1.2.3-korg