/* Allocate and initialize a VI. */
static int init(const char* intf, int vi_i)
{
struct vi* vi = &vis[vi_i];
int i;
unsigned vi_flags = EF_VI_FLAGS_DEFAULT;
TRY(ef_driver_open(&vi->dh));
/* check that RX merge is supported */
if( cfg_rx_merge ) {
unsigned long value;
int ifindex = if_nametoindex(intf);
TEST(ifindex > 0);
int rc = ef_vi_capabilities_get(vi->dh, ifindex, EF_VI_CAP_RX_MERGE, &value);
if( rc < 0 || ! value ) {
fprintf(stderr, "WARNING: RX merge not supported on %s. Use '-c' "
"option instead.\n", intf);
exit(EXIT_FAILURE);
}
else {
vi_flags |= EF_VI_RX_EVENT_MERGE;
}
}
TRY(ef_pd_alloc_by_name(&vi->pd, vi->dh, intf, EF_PD_DEFAULT));
TRY(ef_vi_alloc_from_pd(&vi->vi, vi->dh, &vi->pd, vi->dh, -1, RX_RING_SIZE,
TX_RING_SIZE, NULL, -1, vi_flags));
/* Memory for pkt buffers has already been allocated. Map it into
* the VI. */
TRY(ef_memreg_alloc(&vi->memreg, vi->dh, &vi->pd, vi->dh,
pbs.mem, pbs.mem_size));
for( i = 0; i < pbs.num; ++i ) {
struct pkt_buf* pkt_buf = pkt_buf_from_id(i);
pkt_buf->rx_ef_addr[vi_i] =
ef_memreg_dma_addr(&vi->memreg, i * PKT_BUF_SIZE) + RX_DMA_OFF
+ addr_offset_from_id(i);
pkt_buf->tx_ef_addr[vi_i] =
ef_memreg_dma_addr(&vi->memreg, i * PKT_BUF_SIZE) + RX_DMA_OFF +
ef_vi_receive_prefix_len(&vi->vi) + addr_offset_from_id(i);
}
/* Our pkt buffer allocation function makes assumptions on queue sizes */
assert(ef_vi_receive_capacity(&vi->vi) == RX_RING_SIZE - 1);
assert(ef_vi_transmit_capacity(&vi->vi) == TX_RING_SIZE - 1);
if( cfg_unidirectional && vi_i == 1 )
return 0; /* only need filter and RX fill for ingress VI */
while( ef_vi_receive_space(&vi->vi) > REFILL_BATCH_SIZE )
vi_refill_rx_ring(vi_i);
ef_filter_spec fs;
ef_filter_spec_init(&fs, EF_FILTER_FLAG_NONE);
TRY(ef_filter_spec_set_unicast_all(&fs));
TRY(ef_vi_filter_add(&vi->vi, vi->dh, &fs, NULL));
ef_filter_spec_init(&fs, EF_FILTER_FLAG_NONE);
TRY(ef_filter_spec_set_multicast_all(&fs));
TRY(ef_vi_filter_add(&vi->vi, vi->dh, &fs, NULL));
return 0;
}
/* Allocate and initialize a VI. */
static int init_vi(struct vi_state* vi_state)
{
int i;
TRY(ef_vi_alloc_from_set(&vi_state->vi, dh, &vi_set, dh, -1, -1, -1, 0, NULL,
-1, EF_VI_FLAGS_DEFAULT));
/* The VI has just an RXQ with default capacity of 512 */
vi_state->num = 512;
vi_state->mem_size = vi_state->num * PKT_BUF_SIZE;
vi_state->mem_size = ROUND_UP(vi_state->mem_size, huge_page_size);
/* Allocate huge-page-aligned memory to give best chance of allocating
* transparent huge-pages.
*/
TEST(posix_memalign(&vi_state->mem, huge_page_size, vi_state->mem_size) == 0);
TRY(ef_memreg_alloc(&vi_state->memreg, dh, &pd, dh, vi_state->mem,
vi_state->mem_size));
for( i = 0; i < vi_state->num; ++i ) {
struct pkt_buf* pkt_buf = pkt_buf_from_id(vi_state, i);
pkt_buf->rx_ef_addr =
ef_memreg_dma_addr(&vi_state->memreg, i * PKT_BUF_SIZE) + RX_DMA_OFF;
pkt_buf->rx_ptr = (char*) pkt_buf + RX_DMA_OFF +
ef_vi_receive_prefix_len(&vi_state->vi);
pkt_buf_free(vi_state, pkt_buf);
}
/* Our pkt buffer allocation function makes assumptions on queue sizes */
assert(ef_vi_receive_capacity(&vi_state->vi) == 511);
while( ef_vi_receive_space(&vi_state->vi) > REFILL_BATCH_SIZE )
vi_refill_rx_ring(vi_state);
return 0;
}
static void do_init(char const* interface)
{
enum ef_pd_flags pd_flags = EF_PD_DEFAULT;
ef_filter_spec filter_spec;
struct pkt_buf* pb;
enum ef_vi_flags vi_flags = 0;
int i;
if( cfg_use_vf )
pd_flags |= EF_PD_VF;
if( cfg_phys_mode )
pd_flags |= EF_PD_PHYS_MODE;
if( cfg_disable_tx_push )
vi_flags |= EF_VI_TX_PUSH_DISABLE;
/* Allocate virtual interface. */
TRY(ef_driver_open(&driver_handle));
if ( cfg_use_vport ) {
TRY(ef_pd_alloc_with_vport(&pd, driver_handle, interface, pd_flags,
EF_PD_VLAN_NONE));
} else {
TRY(ef_pd_alloc_by_name(&pd, driver_handle, interface, pd_flags));
}
TRY(ef_vi_alloc_from_pd(&vi, driver_handle, &pd, driver_handle,
-1, -1, -1, NULL, -1, vi_flags));
ef_filter_spec_init(&filter_spec, EF_FILTER_FLAG_NONE);
TRY(ef_filter_spec_set_ip4_local(&filter_spec, IPPROTO_UDP,
sa_local.sin_addr.s_addr,
sa_local.sin_port));
TRY(ef_vi_filter_add(&vi, driver_handle, &filter_spec, &filter_cookie));
{
int bytes = N_BUFS * BUF_SIZE;
TEST(posix_memalign(&pkt_buf_mem, CI_PAGE_SIZE, bytes) == 0);
TRY(ef_memreg_alloc(&memreg, driver_handle, &pd, driver_handle, pkt_buf_mem,
bytes));
for( i = 0; i < N_BUFS; ++i ) {
pb = (void*) ((char*) pkt_buf_mem + i * BUF_SIZE);
pb->id = i;
pb->dma_buf_addr = ef_memreg_dma_addr(&memreg, i * BUF_SIZE);
pb->dma_buf_addr += MEMBER_OFFSET(struct pkt_buf, dma_buf);
pkt_bufs[i] = pb;
}
}
for( i = 0; i < N_RX_BUFS; ++i )
pkt_bufs[i]->dma_buf_addr += cfg_rx_align;
for( i = FIRST_TX_BUF; i < N_BUFS; ++i )
pkt_bufs[i]->dma_buf_addr += cfg_tx_align;
pb = pkt_bufs[FIRST_TX_BUF];
tx_frame_len = init_udp_pkt(pb->dma_buf + cfg_tx_align, cfg_payload_len);
}
static void pkt_buf_init(struct vi* vi, int pkt_buf_i)
{
struct pkt_buf* pkt_buf;
pkt_buf = pkt_buf_from_id(vi, pkt_buf_i);
pkt_buf->vi_owner = vi;
pkt_buf->addr[vi->net_if->id] =
ef_memreg_dma_addr(&vi->memreg, pkt_buf_i * PKT_BUF_SIZE);
pkt_buf->id = pkt_buf_i;
pkt_buf->n_refs = 0;
pkt_buf_free(pkt_buf);
}
static void do_init(int ifindex)
{
enum ef_pd_flags pd_flags = 0;
ef_filter_spec filter_spec;
struct pkt_buf* pb;
enum ef_vi_flags vi_flags = 0;
int i;
if( cfg_use_vf )
pd_flags |= EF_PD_VF;
if( cfg_phys_mode )
pd_flags |= EF_PD_PHYS_MODE;
if( cfg_disable_tx_push )
vi_flags |= EF_VI_TX_PUSH_DISABLE;
/* Allocate virtual interface. */
TRY(ef_driver_open(&driver_handle));
TRY(ef_pd_alloc(&pd, driver_handle, ifindex, pd_flags));
TRY(ef_vi_alloc_from_pd(&vi, driver_handle, &pd, driver_handle,
-1, -1, -1, NULL, -1, vi_flags));
#ifdef __x86_64__
TRY(ef_pio_alloc(&pio, driver_handle, &pd, -1, driver_handle));
TRY(ef_pio_link_vi(&pio, driver_handle, &vi, driver_handle));
#else
/* PIO is only available on x86_64 systems */
TEST(0);
#endif
ef_filter_spec_init(&filter_spec, EF_FILTER_FLAG_NONE);
TRY(ef_filter_spec_set_ip4_local(&filter_spec, IPPROTO_UDP,
sa_local.sin_addr.s_addr,
sa_local.sin_port));
TRY(ef_vi_filter_add(&vi, driver_handle, &filter_spec, NULL));
{
int bytes = (N_RX_BUFS + 1) * RX_BUF_SIZE;
void* p;
TEST(posix_memalign(&p, 4096, bytes) == 0);
TRY(ef_memreg_alloc(&memreg, driver_handle, &pd, driver_handle, p, bytes));
for( i = 0; i <= N_RX_BUFS; ++i ) {
pkt_bufs[i] = (void*) ((char*) p + i * RX_BUF_SIZE);
pkt_bufs[i]->dma_buf_addr = ef_memreg_dma_addr(&memreg, i * RX_BUF_SIZE);
}
}
for( i = 0; i <= N_RX_BUFS; ++i ) {
pb = pkt_bufs[i];
pb->id = i;
pb->dma_buf_addr += MEMBER_OFFSET(struct pkt_buf, dma_buf);
}
init_udp_pkt(pkt_bufs[N_RX_BUFS]->dma_buf, cfg_payload_len);
tx_frame_len = cfg_payload_len + header_size();
}
/* Allocate and initialize a VI. */
static int init(const char* intf, int vi_i)
{
struct vi* vi = &vis[vi_i];
int i;
TRY(ef_driver_open(&vi->dh));
TRY(ef_pd_alloc_by_name(&vi->pd, vi->dh, intf, EF_PD_DEFAULT));
TRY(ef_vi_alloc_from_pd(&vi->vi, vi->dh, &vi->pd, vi->dh, -1, -1, -1, NULL,
-1, EF_VI_FLAGS_DEFAULT));
/* Memory for pkt buffers has already been allocated. Map it into
* the VI. */
TRY(ef_memreg_alloc(&vi->memreg, vi->dh, &vi->pd, vi->dh,
pbs.mem, pbs.mem_size));
for( i = 0; i < pbs.num; ++i ) {
struct pkt_buf* pkt_buf = pkt_buf_from_id(i);
pkt_buf->rx_ef_addr[vi_i] =
ef_memreg_dma_addr(&vi->memreg, i * PKT_BUF_SIZE) + RX_DMA_OFF;
pkt_buf->tx_ef_addr[vi_i] =
ef_memreg_dma_addr(&vi->memreg, i * PKT_BUF_SIZE) + RX_DMA_OFF +
ef_vi_receive_prefix_len(&vi->vi);
pkt_buf->rx_ptr[vi_i] = (char*) pkt_buf + RX_DMA_OFF +
ef_vi_receive_prefix_len(&vi->vi);
}
/* Our pkt buffer allocation function makes assumptions on queue sizes */
assert(ef_vi_receive_capacity(&vi->vi) == 511);
assert(ef_vi_transmit_capacity(&vi->vi) == 511);
while( ef_vi_receive_space(&vi->vi) > REFILL_BATCH_SIZE )
vi_refill_rx_ring(vi_i);
ef_filter_spec fs;
ef_filter_spec_init(&fs, EF_FILTER_FLAG_NONE);
TRY(ef_filter_spec_set_unicast_all(&fs));
TRY(ef_vi_filter_add(&vi->vi, vi->dh, &fs, NULL));
ef_filter_spec_init(&fs, EF_FILTER_FLAG_NONE);
TRY(ef_filter_spec_set_multicast_all(&fs));
TRY(ef_vi_filter_add(&vi->vi, vi->dh, &fs, NULL));
return 0;
}
void net_if_map_vi_pool(struct net_if* net_if, struct vi* vi)
{
struct pkt_buf* pkt_buf;
ef_memreg memreg;
int i;
/* If this fails it means you've tried to map buffers into a protection
* domain that has already mapped those buffers.
*/
TEST(vi->net_if != net_if);
TRY(ef_memreg_alloc(&memreg, net_if->dh, &net_if->pd, net_if->dh,
vi->pkt_bufs, vi->pkt_bufs_n * PKT_BUF_SIZE));
for( i = 0; i < vi->pkt_bufs_n; ++i ) {
pkt_buf = pkt_buf_from_id(vi, i);
pkt_buf->addr[net_if->id] = ef_memreg_dma_addr(&memreg, i * PKT_BUF_SIZE);
}
}