1e948693eSPhilip Paeps /*- 2e948693eSPhilip Paeps * Copyright (c) 2010-2011 Solarflare Communications, Inc. 3e948693eSPhilip Paeps * All rights reserved. 4e948693eSPhilip Paeps * 5e948693eSPhilip Paeps * This software was developed in part by Philip Paeps under contract for 6e948693eSPhilip Paeps * Solarflare Communications, Inc. 7e948693eSPhilip Paeps * 8e948693eSPhilip Paeps * Redistribution and use in source and binary forms, with or without 9e948693eSPhilip Paeps * modification, are permitted provided that the following conditions 10e948693eSPhilip Paeps * are met: 11e948693eSPhilip Paeps * 1. Redistributions of source code must retain the above copyright 12e948693eSPhilip Paeps * notice, this list of conditions and the following disclaimer. 13e948693eSPhilip Paeps * 2. Redistributions in binary form must reproduce the above copyright 14e948693eSPhilip Paeps * notice, this list of conditions and the following disclaimer in the 15e948693eSPhilip Paeps * documentation and/or other materials provided with the distribution. 16e948693eSPhilip Paeps * 17e948693eSPhilip Paeps * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18e948693eSPhilip Paeps * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19e948693eSPhilip Paeps * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20e948693eSPhilip Paeps * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21e948693eSPhilip Paeps * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22e948693eSPhilip Paeps * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23e948693eSPhilip Paeps * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24e948693eSPhilip Paeps * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25e948693eSPhilip Paeps * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26e948693eSPhilip Paeps * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27e948693eSPhilip Paeps * SUCH DAMAGE. 28e948693eSPhilip Paeps */ 29e948693eSPhilip Paeps 30cf07c70dSGeorge V. Neville-Neil /* Theory of operation: 31cf07c70dSGeorge V. Neville-Neil * 32cf07c70dSGeorge V. Neville-Neil * Tx queues allocation and mapping 33cf07c70dSGeorge V. Neville-Neil * 34cf07c70dSGeorge V. Neville-Neil * One Tx queue with enabled checksum offload is allocated per Rx channel 35cf07c70dSGeorge V. Neville-Neil * (event queue). Also 2 Tx queues (one without checksum offload and one 36cf07c70dSGeorge V. Neville-Neil * with IP checksum offload only) are allocated and bound to event queue 0. 37cf07c70dSGeorge V. Neville-Neil * sfxge_txq_type is used as Tx queue label. 38cf07c70dSGeorge V. Neville-Neil * 39cf07c70dSGeorge V. Neville-Neil * So, event queue plus label mapping to Tx queue index is: 40cf07c70dSGeorge V. Neville-Neil * if event queue index is 0, TxQ-index = TxQ-label * [0..SFXGE_TXQ_NTYPES) 41cf07c70dSGeorge V. Neville-Neil * else TxQ-index = SFXGE_TXQ_NTYPES + EvQ-index - 1 42cf07c70dSGeorge V. Neville-Neil * See sfxge_get_txq_by_label() sfxge_ev.c 43cf07c70dSGeorge V. Neville-Neil */ 44cf07c70dSGeorge V. Neville-Neil 45e948693eSPhilip Paeps #include <sys/cdefs.h> 46e948693eSPhilip Paeps __FBSDID("$FreeBSD$"); 47e948693eSPhilip Paeps 48e948693eSPhilip Paeps #include <sys/types.h> 49e948693eSPhilip Paeps #include <sys/mbuf.h> 50e948693eSPhilip Paeps #include <sys/smp.h> 51e948693eSPhilip Paeps #include <sys/socket.h> 52e948693eSPhilip Paeps #include <sys/sysctl.h> 53060a95efSGeorge V. Neville-Neil #include <sys/syslog.h> 54e948693eSPhilip Paeps 55e948693eSPhilip Paeps #include <net/bpf.h> 56e948693eSPhilip Paeps #include <net/ethernet.h> 57e948693eSPhilip Paeps #include <net/if.h> 58e948693eSPhilip Paeps #include <net/if_vlan_var.h> 59e948693eSPhilip Paeps 60e948693eSPhilip Paeps #include <netinet/in.h> 61e948693eSPhilip Paeps #include <netinet/ip.h> 62e948693eSPhilip Paeps #include <netinet/ip6.h> 63e948693eSPhilip Paeps #include <netinet/tcp.h> 64e948693eSPhilip Paeps 65e948693eSPhilip Paeps #include "common/efx.h" 66e948693eSPhilip Paeps 67e948693eSPhilip Paeps #include "sfxge.h" 68e948693eSPhilip Paeps #include "sfxge_tx.h" 69e948693eSPhilip Paeps 70e948693eSPhilip Paeps /* Set the block level to ensure there is space to generate a 71e948693eSPhilip Paeps * large number of descriptors for TSO. With minimum MSS and 72e948693eSPhilip Paeps * maximum mbuf length we might need more than a ring-ful of 73e948693eSPhilip Paeps * descriptors, but this should not happen in practice except 74e948693eSPhilip Paeps * due to deliberate attack. In that case we will truncate 75e948693eSPhilip Paeps * the output at a packet boundary. Allow for a reasonable 76e948693eSPhilip Paeps * minimum MSS of 512. 77e948693eSPhilip Paeps */ 78e948693eSPhilip Paeps #define SFXGE_TSO_MAX_DESC ((65535 / 512) * 2 + SFXGE_TX_MAPPING_MAX_SEG - 1) 79385b1d8eSGeorge V. Neville-Neil #define SFXGE_TXQ_BLOCK_LEVEL(_entries) ((_entries) - SFXGE_TSO_MAX_DESC) 80e948693eSPhilip Paeps 81060a95efSGeorge V. Neville-Neil #ifdef SFXGE_HAVE_MQ 82060a95efSGeorge V. Neville-Neil 83060a95efSGeorge V. Neville-Neil #define SFXGE_PARAM_TX_DPL_GET_MAX SFXGE_PARAM(tx_dpl_get_max) 84060a95efSGeorge V. Neville-Neil static int sfxge_tx_dpl_get_max = SFXGE_TX_DPL_GET_PKT_LIMIT_DEFAULT; 85060a95efSGeorge V. Neville-Neil TUNABLE_INT(SFXGE_PARAM_TX_DPL_GET_MAX, &sfxge_tx_dpl_get_max); 86060a95efSGeorge V. Neville-Neil SYSCTL_INT(_hw_sfxge, OID_AUTO, tx_dpl_get_max, CTLFLAG_RDTUN, 87060a95efSGeorge V. Neville-Neil &sfxge_tx_dpl_get_max, 0, 8893929f25SAndrew Rybchenko "Maximum number of any packets in deferred packet get-list"); 8993929f25SAndrew Rybchenko 9093929f25SAndrew Rybchenko #define SFXGE_PARAM_TX_DPL_GET_NON_TCP_MAX \ 9193929f25SAndrew Rybchenko SFXGE_PARAM(tx_dpl_get_non_tcp_max) 9293929f25SAndrew Rybchenko static int sfxge_tx_dpl_get_non_tcp_max = 9393929f25SAndrew Rybchenko SFXGE_TX_DPL_GET_NON_TCP_PKT_LIMIT_DEFAULT; 9493929f25SAndrew Rybchenko TUNABLE_INT(SFXGE_PARAM_TX_DPL_GET_NON_TCP_MAX, &sfxge_tx_dpl_get_non_tcp_max); 9593929f25SAndrew Rybchenko SYSCTL_INT(_hw_sfxge, OID_AUTO, tx_dpl_get_non_tcp_max, CTLFLAG_RDTUN, 9693929f25SAndrew Rybchenko &sfxge_tx_dpl_get_non_tcp_max, 0, 9793929f25SAndrew Rybchenko "Maximum number of non-TCP packets in deferred packet get-list"); 98060a95efSGeorge V. Neville-Neil 99060a95efSGeorge V. Neville-Neil #define SFXGE_PARAM_TX_DPL_PUT_MAX SFXGE_PARAM(tx_dpl_put_max) 100060a95efSGeorge V. Neville-Neil static int sfxge_tx_dpl_put_max = SFXGE_TX_DPL_PUT_PKT_LIMIT_DEFAULT; 101060a95efSGeorge V. Neville-Neil TUNABLE_INT(SFXGE_PARAM_TX_DPL_PUT_MAX, &sfxge_tx_dpl_put_max); 102060a95efSGeorge V. Neville-Neil SYSCTL_INT(_hw_sfxge, OID_AUTO, tx_dpl_put_max, CTLFLAG_RDTUN, 103060a95efSGeorge V. Neville-Neil &sfxge_tx_dpl_put_max, 0, 10493929f25SAndrew Rybchenko "Maximum number of any packets in deferred packet put-list"); 105060a95efSGeorge V. Neville-Neil 106060a95efSGeorge V. Neville-Neil #endif 107060a95efSGeorge V. Neville-Neil 108060a95efSGeorge V. Neville-Neil 109e948693eSPhilip Paeps /* Forward declarations. */ 1100b28bbdcSAndrew Rybchenko static void sfxge_tx_qdpl_service(struct sfxge_txq *txq); 111e948693eSPhilip Paeps static void sfxge_tx_qlist_post(struct sfxge_txq *txq); 112e948693eSPhilip Paeps static void sfxge_tx_qunblock(struct sfxge_txq *txq); 113e948693eSPhilip Paeps static int sfxge_tx_queue_tso(struct sfxge_txq *txq, struct mbuf *mbuf, 114e948693eSPhilip Paeps const bus_dma_segment_t *dma_seg, int n_dma_seg); 115e948693eSPhilip Paeps 116e948693eSPhilip Paeps void 117cc933626SAndrew Rybchenko sfxge_tx_qcomplete(struct sfxge_txq *txq, struct sfxge_evq *evq) 118e948693eSPhilip Paeps { 119e948693eSPhilip Paeps unsigned int completed; 120e948693eSPhilip Paeps 121763cab71SAndrew Rybchenko SFXGE_EVQ_LOCK_ASSERT_OWNED(evq); 122e948693eSPhilip Paeps 123e948693eSPhilip Paeps completed = txq->completed; 124e948693eSPhilip Paeps while (completed != txq->pending) { 125e948693eSPhilip Paeps struct sfxge_tx_mapping *stmp; 126e948693eSPhilip Paeps unsigned int id; 127e948693eSPhilip Paeps 128385b1d8eSGeorge V. Neville-Neil id = completed++ & txq->ptr_mask; 129e948693eSPhilip Paeps 130e948693eSPhilip Paeps stmp = &txq->stmp[id]; 131e948693eSPhilip Paeps if (stmp->flags & TX_BUF_UNMAP) { 132e948693eSPhilip Paeps bus_dmamap_unload(txq->packet_dma_tag, stmp->map); 133e948693eSPhilip Paeps if (stmp->flags & TX_BUF_MBUF) { 134e948693eSPhilip Paeps struct mbuf *m = stmp->u.mbuf; 135e948693eSPhilip Paeps do 136e948693eSPhilip Paeps m = m_free(m); 137e948693eSPhilip Paeps while (m != NULL); 138e948693eSPhilip Paeps } else { 139e948693eSPhilip Paeps free(stmp->u.heap_buf, M_SFXGE); 140e948693eSPhilip Paeps } 141e948693eSPhilip Paeps stmp->flags = 0; 142e948693eSPhilip Paeps } 143e948693eSPhilip Paeps } 144e948693eSPhilip Paeps txq->completed = completed; 145e948693eSPhilip Paeps 146e948693eSPhilip Paeps /* Check whether we need to unblock the queue. */ 147e948693eSPhilip Paeps mb(); 148e948693eSPhilip Paeps if (txq->blocked) { 149e948693eSPhilip Paeps unsigned int level; 150e948693eSPhilip Paeps 151e948693eSPhilip Paeps level = txq->added - txq->completed; 152385b1d8eSGeorge V. Neville-Neil if (level <= SFXGE_TXQ_UNBLOCK_LEVEL(txq->entries)) 153e948693eSPhilip Paeps sfxge_tx_qunblock(txq); 154e948693eSPhilip Paeps } 155e948693eSPhilip Paeps } 156e948693eSPhilip Paeps 157e948693eSPhilip Paeps #ifdef SFXGE_HAVE_MQ 158e948693eSPhilip Paeps 1590b28bbdcSAndrew Rybchenko static unsigned int 16093929f25SAndrew Rybchenko sfxge_is_mbuf_non_tcp(struct mbuf *mbuf) 16193929f25SAndrew Rybchenko { 16293929f25SAndrew Rybchenko /* Absense of TCP checksum flags does not mean that it is non-TCP 16393929f25SAndrew Rybchenko * but it should be true if user wants to achieve high throughput. 16493929f25SAndrew Rybchenko */ 16593929f25SAndrew Rybchenko return (!(mbuf->m_pkthdr.csum_flags & (CSUM_IP_TCP | CSUM_IP6_TCP))); 16693929f25SAndrew Rybchenko } 16793929f25SAndrew Rybchenko 168e948693eSPhilip Paeps /* 169e948693eSPhilip Paeps * Reorder the put list and append it to the get list. 170e948693eSPhilip Paeps */ 171e948693eSPhilip Paeps static void 172e948693eSPhilip Paeps sfxge_tx_qdpl_swizzle(struct sfxge_txq *txq) 173e948693eSPhilip Paeps { 174e948693eSPhilip Paeps struct sfxge_tx_dpl *stdp; 175e948693eSPhilip Paeps struct mbuf *mbuf, *get_next, **get_tailp; 176e948693eSPhilip Paeps volatile uintptr_t *putp; 177e948693eSPhilip Paeps uintptr_t put; 178e948693eSPhilip Paeps unsigned int count; 17993929f25SAndrew Rybchenko unsigned int non_tcp_count; 180e948693eSPhilip Paeps 181763cab71SAndrew Rybchenko SFXGE_TXQ_LOCK_ASSERT_OWNED(txq); 182e948693eSPhilip Paeps 183e948693eSPhilip Paeps stdp = &txq->dpl; 184e948693eSPhilip Paeps 185e948693eSPhilip Paeps /* Acquire the put list. */ 186e948693eSPhilip Paeps putp = &stdp->std_put; 187fb8ccc78SMarius Strobl put = atomic_readandclear_ptr(putp); 188e948693eSPhilip Paeps mbuf = (void *)put; 189e948693eSPhilip Paeps 190e948693eSPhilip Paeps if (mbuf == NULL) 191e948693eSPhilip Paeps return; 192e948693eSPhilip Paeps 193e948693eSPhilip Paeps /* Reverse the put list. */ 194e948693eSPhilip Paeps get_tailp = &mbuf->m_nextpkt; 195e948693eSPhilip Paeps get_next = NULL; 196e948693eSPhilip Paeps 197e948693eSPhilip Paeps count = 0; 19893929f25SAndrew Rybchenko non_tcp_count = 0; 199e948693eSPhilip Paeps do { 200e948693eSPhilip Paeps struct mbuf *put_next; 201e948693eSPhilip Paeps 20293929f25SAndrew Rybchenko non_tcp_count += sfxge_is_mbuf_non_tcp(mbuf); 203e948693eSPhilip Paeps put_next = mbuf->m_nextpkt; 204e948693eSPhilip Paeps mbuf->m_nextpkt = get_next; 205e948693eSPhilip Paeps get_next = mbuf; 206e948693eSPhilip Paeps mbuf = put_next; 207e948693eSPhilip Paeps 208e948693eSPhilip Paeps count++; 209e948693eSPhilip Paeps } while (mbuf != NULL); 210e948693eSPhilip Paeps 211e948693eSPhilip Paeps /* Append the reversed put list to the get list. */ 212e948693eSPhilip Paeps KASSERT(*get_tailp == NULL, ("*get_tailp != NULL")); 213e948693eSPhilip Paeps *stdp->std_getp = get_next; 214e948693eSPhilip Paeps stdp->std_getp = get_tailp; 215bc85c897SGeorge V. Neville-Neil stdp->std_get_count += count; 21693929f25SAndrew Rybchenko stdp->std_get_non_tcp_count += non_tcp_count; 217e948693eSPhilip Paeps } 218e948693eSPhilip Paeps 219e948693eSPhilip Paeps #endif /* SFXGE_HAVE_MQ */ 220e948693eSPhilip Paeps 221e948693eSPhilip Paeps static void 222e948693eSPhilip Paeps sfxge_tx_qreap(struct sfxge_txq *txq) 223e948693eSPhilip Paeps { 224763cab71SAndrew Rybchenko SFXGE_TXQ_LOCK_ASSERT_OWNED(txq); 225e948693eSPhilip Paeps 226e948693eSPhilip Paeps txq->reaped = txq->completed; 227e948693eSPhilip Paeps } 228e948693eSPhilip Paeps 229e948693eSPhilip Paeps static void 230e948693eSPhilip Paeps sfxge_tx_qlist_post(struct sfxge_txq *txq) 231e948693eSPhilip Paeps { 232e948693eSPhilip Paeps unsigned int old_added; 233e948693eSPhilip Paeps unsigned int level; 234e948693eSPhilip Paeps int rc; 235e948693eSPhilip Paeps 236763cab71SAndrew Rybchenko SFXGE_TXQ_LOCK_ASSERT_OWNED(txq); 237e948693eSPhilip Paeps 238e948693eSPhilip Paeps KASSERT(txq->n_pend_desc != 0, ("txq->n_pend_desc == 0")); 239e948693eSPhilip Paeps KASSERT(txq->n_pend_desc <= SFXGE_TSO_MAX_DESC, 240e948693eSPhilip Paeps ("txq->n_pend_desc too large")); 241e948693eSPhilip Paeps KASSERT(!txq->blocked, ("txq->blocked")); 242e948693eSPhilip Paeps 243e948693eSPhilip Paeps old_added = txq->added; 244e948693eSPhilip Paeps 245e948693eSPhilip Paeps /* Post the fragment list. */ 246e948693eSPhilip Paeps rc = efx_tx_qpost(txq->common, txq->pend_desc, txq->n_pend_desc, 247e948693eSPhilip Paeps txq->reaped, &txq->added); 248e948693eSPhilip Paeps KASSERT(rc == 0, ("efx_tx_qpost() failed")); 249e948693eSPhilip Paeps 250e948693eSPhilip Paeps /* If efx_tx_qpost() had to refragment, our information about 251e948693eSPhilip Paeps * buffers to free may be associated with the wrong 252e948693eSPhilip Paeps * descriptors. 253e948693eSPhilip Paeps */ 254e948693eSPhilip Paeps KASSERT(txq->added - old_added == txq->n_pend_desc, 255e948693eSPhilip Paeps ("efx_tx_qpost() refragmented descriptors")); 256e948693eSPhilip Paeps 257e948693eSPhilip Paeps level = txq->added - txq->reaped; 258385b1d8eSGeorge V. Neville-Neil KASSERT(level <= txq->entries, ("overfilled TX queue")); 259e948693eSPhilip Paeps 260e948693eSPhilip Paeps /* Clear the fragment list. */ 261e948693eSPhilip Paeps txq->n_pend_desc = 0; 262e948693eSPhilip Paeps 263e948693eSPhilip Paeps /* Have we reached the block level? */ 264385b1d8eSGeorge V. Neville-Neil if (level < SFXGE_TXQ_BLOCK_LEVEL(txq->entries)) 265e948693eSPhilip Paeps return; 266e948693eSPhilip Paeps 267e948693eSPhilip Paeps /* Reap, and check again */ 268e948693eSPhilip Paeps sfxge_tx_qreap(txq); 269e948693eSPhilip Paeps level = txq->added - txq->reaped; 270385b1d8eSGeorge V. Neville-Neil if (level < SFXGE_TXQ_BLOCK_LEVEL(txq->entries)) 271e948693eSPhilip Paeps return; 272e948693eSPhilip Paeps 273e948693eSPhilip Paeps txq->blocked = 1; 274e948693eSPhilip Paeps 275e948693eSPhilip Paeps /* 276e948693eSPhilip Paeps * Avoid a race with completion interrupt handling that could leave 277e948693eSPhilip Paeps * the queue blocked. 278e948693eSPhilip Paeps */ 279e948693eSPhilip Paeps mb(); 280e948693eSPhilip Paeps sfxge_tx_qreap(txq); 281e948693eSPhilip Paeps level = txq->added - txq->reaped; 282385b1d8eSGeorge V. Neville-Neil if (level < SFXGE_TXQ_BLOCK_LEVEL(txq->entries)) { 283e948693eSPhilip Paeps mb(); 284e948693eSPhilip Paeps txq->blocked = 0; 285e948693eSPhilip Paeps } 286e948693eSPhilip Paeps } 287e948693eSPhilip Paeps 288e948693eSPhilip Paeps static int sfxge_tx_queue_mbuf(struct sfxge_txq *txq, struct mbuf *mbuf) 289e948693eSPhilip Paeps { 290e948693eSPhilip Paeps bus_dmamap_t *used_map; 291e948693eSPhilip Paeps bus_dmamap_t map; 292e948693eSPhilip Paeps bus_dma_segment_t dma_seg[SFXGE_TX_MAPPING_MAX_SEG]; 293e948693eSPhilip Paeps unsigned int id; 294e948693eSPhilip Paeps struct sfxge_tx_mapping *stmp; 295e948693eSPhilip Paeps efx_buffer_t *desc; 296e948693eSPhilip Paeps int n_dma_seg; 297e948693eSPhilip Paeps int rc; 298e948693eSPhilip Paeps int i; 299e948693eSPhilip Paeps 300e948693eSPhilip Paeps KASSERT(!txq->blocked, ("txq->blocked")); 301e948693eSPhilip Paeps 302e948693eSPhilip Paeps if (mbuf->m_pkthdr.csum_flags & CSUM_TSO) 303e948693eSPhilip Paeps prefetch_read_many(mbuf->m_data); 304e948693eSPhilip Paeps 305e948693eSPhilip Paeps if (txq->init_state != SFXGE_TXQ_STARTED) { 306e948693eSPhilip Paeps rc = EINTR; 307e948693eSPhilip Paeps goto reject; 308e948693eSPhilip Paeps } 309e948693eSPhilip Paeps 310e948693eSPhilip Paeps /* Load the packet for DMA. */ 311385b1d8eSGeorge V. Neville-Neil id = txq->added & txq->ptr_mask; 312e948693eSPhilip Paeps stmp = &txq->stmp[id]; 313e948693eSPhilip Paeps rc = bus_dmamap_load_mbuf_sg(txq->packet_dma_tag, stmp->map, 314e948693eSPhilip Paeps mbuf, dma_seg, &n_dma_seg, 0); 315e948693eSPhilip Paeps if (rc == EFBIG) { 316e948693eSPhilip Paeps /* Try again. */ 317c6499eccSGleb Smirnoff struct mbuf *new_mbuf = m_collapse(mbuf, M_NOWAIT, 318e948693eSPhilip Paeps SFXGE_TX_MAPPING_MAX_SEG); 319e948693eSPhilip Paeps if (new_mbuf == NULL) 320e948693eSPhilip Paeps goto reject; 321e948693eSPhilip Paeps ++txq->collapses; 322e948693eSPhilip Paeps mbuf = new_mbuf; 323e948693eSPhilip Paeps rc = bus_dmamap_load_mbuf_sg(txq->packet_dma_tag, 324e948693eSPhilip Paeps stmp->map, mbuf, 325e948693eSPhilip Paeps dma_seg, &n_dma_seg, 0); 326e948693eSPhilip Paeps } 327e948693eSPhilip Paeps if (rc != 0) 328e948693eSPhilip Paeps goto reject; 329e948693eSPhilip Paeps 330e948693eSPhilip Paeps /* Make the packet visible to the hardware. */ 331e948693eSPhilip Paeps bus_dmamap_sync(txq->packet_dma_tag, stmp->map, BUS_DMASYNC_PREWRITE); 332e948693eSPhilip Paeps 333e948693eSPhilip Paeps used_map = &stmp->map; 334e948693eSPhilip Paeps 335e948693eSPhilip Paeps if (mbuf->m_pkthdr.csum_flags & CSUM_TSO) { 336e948693eSPhilip Paeps rc = sfxge_tx_queue_tso(txq, mbuf, dma_seg, n_dma_seg); 337e948693eSPhilip Paeps if (rc < 0) 338e948693eSPhilip Paeps goto reject_mapped; 339e948693eSPhilip Paeps stmp = &txq->stmp[rc]; 340e948693eSPhilip Paeps } else { 341e948693eSPhilip Paeps /* Add the mapping to the fragment list, and set flags 342e948693eSPhilip Paeps * for the buffer. 343e948693eSPhilip Paeps */ 344e948693eSPhilip Paeps i = 0; 345e948693eSPhilip Paeps for (;;) { 346e948693eSPhilip Paeps desc = &txq->pend_desc[i]; 347e948693eSPhilip Paeps desc->eb_addr = dma_seg[i].ds_addr; 348e948693eSPhilip Paeps desc->eb_size = dma_seg[i].ds_len; 349e948693eSPhilip Paeps if (i == n_dma_seg - 1) { 350e948693eSPhilip Paeps desc->eb_eop = 1; 351e948693eSPhilip Paeps break; 352e948693eSPhilip Paeps } 353e948693eSPhilip Paeps desc->eb_eop = 0; 354e948693eSPhilip Paeps i++; 355e948693eSPhilip Paeps 356e948693eSPhilip Paeps stmp->flags = 0; 357e948693eSPhilip Paeps if (__predict_false(stmp == 358385b1d8eSGeorge V. Neville-Neil &txq->stmp[txq->ptr_mask])) 359e948693eSPhilip Paeps stmp = &txq->stmp[0]; 360e948693eSPhilip Paeps else 361e948693eSPhilip Paeps stmp++; 362e948693eSPhilip Paeps } 363e948693eSPhilip Paeps txq->n_pend_desc = n_dma_seg; 364e948693eSPhilip Paeps } 365e948693eSPhilip Paeps 366e948693eSPhilip Paeps /* 367e948693eSPhilip Paeps * If the mapping required more than one descriptor 368e948693eSPhilip Paeps * then we need to associate the DMA map with the last 369e948693eSPhilip Paeps * descriptor, not the first. 370e948693eSPhilip Paeps */ 371e948693eSPhilip Paeps if (used_map != &stmp->map) { 372e948693eSPhilip Paeps map = stmp->map; 373e948693eSPhilip Paeps stmp->map = *used_map; 374e948693eSPhilip Paeps *used_map = map; 375e948693eSPhilip Paeps } 376e948693eSPhilip Paeps 377e948693eSPhilip Paeps stmp->u.mbuf = mbuf; 378e948693eSPhilip Paeps stmp->flags = TX_BUF_UNMAP | TX_BUF_MBUF; 379e948693eSPhilip Paeps 380e948693eSPhilip Paeps /* Post the fragment list. */ 381e948693eSPhilip Paeps sfxge_tx_qlist_post(txq); 382e948693eSPhilip Paeps 383b7b0edd1SGeorge V. Neville-Neil return (0); 384e948693eSPhilip Paeps 385e948693eSPhilip Paeps reject_mapped: 386e948693eSPhilip Paeps bus_dmamap_unload(txq->packet_dma_tag, *used_map); 387e948693eSPhilip Paeps reject: 388e948693eSPhilip Paeps /* Drop the packet on the floor. */ 389e948693eSPhilip Paeps m_freem(mbuf); 390e948693eSPhilip Paeps ++txq->drops; 391e948693eSPhilip Paeps 392b7b0edd1SGeorge V. Neville-Neil return (rc); 393e948693eSPhilip Paeps } 394e948693eSPhilip Paeps 395e948693eSPhilip Paeps #ifdef SFXGE_HAVE_MQ 396e948693eSPhilip Paeps 397e948693eSPhilip Paeps /* 398e948693eSPhilip Paeps * Drain the deferred packet list into the transmit queue. 399e948693eSPhilip Paeps */ 400e948693eSPhilip Paeps static void 401e948693eSPhilip Paeps sfxge_tx_qdpl_drain(struct sfxge_txq *txq) 402e948693eSPhilip Paeps { 403e948693eSPhilip Paeps struct sfxge_softc *sc; 404e948693eSPhilip Paeps struct sfxge_tx_dpl *stdp; 405e948693eSPhilip Paeps struct mbuf *mbuf, *next; 406e948693eSPhilip Paeps unsigned int count; 40793929f25SAndrew Rybchenko unsigned int non_tcp_count; 408e948693eSPhilip Paeps unsigned int pushed; 409e948693eSPhilip Paeps int rc; 410e948693eSPhilip Paeps 411763cab71SAndrew Rybchenko SFXGE_TXQ_LOCK_ASSERT_OWNED(txq); 412e948693eSPhilip Paeps 413e948693eSPhilip Paeps sc = txq->sc; 414e948693eSPhilip Paeps stdp = &txq->dpl; 415e948693eSPhilip Paeps pushed = txq->added; 416e948693eSPhilip Paeps 417e948693eSPhilip Paeps prefetch_read_many(sc->enp); 418e948693eSPhilip Paeps prefetch_read_many(txq->common); 419e948693eSPhilip Paeps 420e948693eSPhilip Paeps mbuf = stdp->std_get; 421bc85c897SGeorge V. Neville-Neil count = stdp->std_get_count; 42293929f25SAndrew Rybchenko non_tcp_count = stdp->std_get_non_tcp_count; 42393929f25SAndrew Rybchenko 42493929f25SAndrew Rybchenko if (count > stdp->std_get_hiwat) 42593929f25SAndrew Rybchenko stdp->std_get_hiwat = count; 426e948693eSPhilip Paeps 427e948693eSPhilip Paeps while (count != 0) { 428e948693eSPhilip Paeps KASSERT(mbuf != NULL, ("mbuf == NULL")); 429e948693eSPhilip Paeps 430e948693eSPhilip Paeps next = mbuf->m_nextpkt; 431e948693eSPhilip Paeps mbuf->m_nextpkt = NULL; 432e948693eSPhilip Paeps 433e948693eSPhilip Paeps ETHER_BPF_MTAP(sc->ifnet, mbuf); /* packet capture */ 434e948693eSPhilip Paeps 435e948693eSPhilip Paeps if (next != NULL) 436e948693eSPhilip Paeps prefetch_read_many(next); 437e948693eSPhilip Paeps 438e948693eSPhilip Paeps rc = sfxge_tx_queue_mbuf(txq, mbuf); 439e948693eSPhilip Paeps --count; 44093929f25SAndrew Rybchenko non_tcp_count -= sfxge_is_mbuf_non_tcp(mbuf); 441e948693eSPhilip Paeps mbuf = next; 442e948693eSPhilip Paeps if (rc != 0) 443e948693eSPhilip Paeps continue; 444e948693eSPhilip Paeps 445e948693eSPhilip Paeps if (txq->blocked) 446e948693eSPhilip Paeps break; 447e948693eSPhilip Paeps 448e948693eSPhilip Paeps /* Push the fragments to the hardware in batches. */ 449e948693eSPhilip Paeps if (txq->added - pushed >= SFXGE_TX_BATCH) { 450e948693eSPhilip Paeps efx_tx_qpush(txq->common, txq->added); 451e948693eSPhilip Paeps pushed = txq->added; 452e948693eSPhilip Paeps } 453e948693eSPhilip Paeps } 454e948693eSPhilip Paeps 455e948693eSPhilip Paeps if (count == 0) { 456e948693eSPhilip Paeps KASSERT(mbuf == NULL, ("mbuf != NULL")); 45793929f25SAndrew Rybchenko KASSERT(non_tcp_count == 0, 45893929f25SAndrew Rybchenko ("inconsistent TCP/non-TCP detection")); 459e948693eSPhilip Paeps stdp->std_get = NULL; 460bc85c897SGeorge V. Neville-Neil stdp->std_get_count = 0; 46193929f25SAndrew Rybchenko stdp->std_get_non_tcp_count = 0; 462e948693eSPhilip Paeps stdp->std_getp = &stdp->std_get; 463e948693eSPhilip Paeps } else { 464e948693eSPhilip Paeps stdp->std_get = mbuf; 465bc85c897SGeorge V. Neville-Neil stdp->std_get_count = count; 46693929f25SAndrew Rybchenko stdp->std_get_non_tcp_count = non_tcp_count; 467e948693eSPhilip Paeps } 468e948693eSPhilip Paeps 469e948693eSPhilip Paeps if (txq->added != pushed) 470e948693eSPhilip Paeps efx_tx_qpush(txq->common, txq->added); 471e948693eSPhilip Paeps 472bc85c897SGeorge V. Neville-Neil KASSERT(txq->blocked || stdp->std_get_count == 0, 473e948693eSPhilip Paeps ("queue unblocked but count is non-zero")); 474e948693eSPhilip Paeps } 475e948693eSPhilip Paeps 476e948693eSPhilip Paeps #define SFXGE_TX_QDPL_PENDING(_txq) \ 477e948693eSPhilip Paeps ((_txq)->dpl.std_put != 0) 478e948693eSPhilip Paeps 479e948693eSPhilip Paeps /* 480e948693eSPhilip Paeps * Service the deferred packet list. 481e948693eSPhilip Paeps * 482e948693eSPhilip Paeps * NOTE: drops the txq mutex! 483e948693eSPhilip Paeps */ 4840b28bbdcSAndrew Rybchenko static void 485e948693eSPhilip Paeps sfxge_tx_qdpl_service(struct sfxge_txq *txq) 486e948693eSPhilip Paeps { 487763cab71SAndrew Rybchenko SFXGE_TXQ_LOCK_ASSERT_OWNED(txq); 488e948693eSPhilip Paeps 489e948693eSPhilip Paeps do { 490e948693eSPhilip Paeps if (SFXGE_TX_QDPL_PENDING(txq)) 491e948693eSPhilip Paeps sfxge_tx_qdpl_swizzle(txq); 492e948693eSPhilip Paeps 493e948693eSPhilip Paeps if (!txq->blocked) 494e948693eSPhilip Paeps sfxge_tx_qdpl_drain(txq); 495e948693eSPhilip Paeps 496763cab71SAndrew Rybchenko SFXGE_TXQ_UNLOCK(txq); 497e948693eSPhilip Paeps } while (SFXGE_TX_QDPL_PENDING(txq) && 498763cab71SAndrew Rybchenko SFXGE_TXQ_TRYLOCK(txq)); 499e948693eSPhilip Paeps } 500e948693eSPhilip Paeps 501e948693eSPhilip Paeps /* 502e948693eSPhilip Paeps * Put a packet on the deferred packet list. 503e948693eSPhilip Paeps * 504e948693eSPhilip Paeps * If we are called with the txq lock held, we put the packet on the "get 505e948693eSPhilip Paeps * list", otherwise we atomically push it on the "put list". The swizzle 506e948693eSPhilip Paeps * function takes care of ordering. 507e948693eSPhilip Paeps * 508e948693eSPhilip Paeps * The length of the put list is bounded by SFXGE_TX_MAX_DEFFERED. We 509e948693eSPhilip Paeps * overload the csum_data field in the mbuf to keep track of this length 510e948693eSPhilip Paeps * because there is no cheap alternative to avoid races. 511e948693eSPhilip Paeps */ 5120b28bbdcSAndrew Rybchenko static int 513e948693eSPhilip Paeps sfxge_tx_qdpl_put(struct sfxge_txq *txq, struct mbuf *mbuf, int locked) 514e948693eSPhilip Paeps { 515e948693eSPhilip Paeps struct sfxge_tx_dpl *stdp; 516e948693eSPhilip Paeps 517e948693eSPhilip Paeps stdp = &txq->dpl; 518e948693eSPhilip Paeps 519e948693eSPhilip Paeps KASSERT(mbuf->m_nextpkt == NULL, ("mbuf->m_nextpkt != NULL")); 520e948693eSPhilip Paeps 521e948693eSPhilip Paeps if (locked) { 522763cab71SAndrew Rybchenko SFXGE_TXQ_LOCK_ASSERT_OWNED(txq); 523e948693eSPhilip Paeps 524e948693eSPhilip Paeps sfxge_tx_qdpl_swizzle(txq); 525e948693eSPhilip Paeps 52693929f25SAndrew Rybchenko if (stdp->std_get_count >= stdp->std_get_max) { 52793929f25SAndrew Rybchenko txq->get_overflow++; 528c1974e29SGleb Smirnoff return (ENOBUFS); 52993929f25SAndrew Rybchenko } 53093929f25SAndrew Rybchenko if (sfxge_is_mbuf_non_tcp(mbuf)) { 53193929f25SAndrew Rybchenko if (stdp->std_get_non_tcp_count >= 53293929f25SAndrew Rybchenko stdp->std_get_non_tcp_max) { 53393929f25SAndrew Rybchenko txq->get_non_tcp_overflow++; 53493929f25SAndrew Rybchenko return (ENOBUFS); 53593929f25SAndrew Rybchenko } 53693929f25SAndrew Rybchenko stdp->std_get_non_tcp_count++; 53793929f25SAndrew Rybchenko } 538c1974e29SGleb Smirnoff 539e948693eSPhilip Paeps *(stdp->std_getp) = mbuf; 540e948693eSPhilip Paeps stdp->std_getp = &mbuf->m_nextpkt; 541bc85c897SGeorge V. Neville-Neil stdp->std_get_count++; 542e948693eSPhilip Paeps } else { 543e948693eSPhilip Paeps volatile uintptr_t *putp; 544e948693eSPhilip Paeps uintptr_t old; 545e948693eSPhilip Paeps uintptr_t new; 546e948693eSPhilip Paeps unsigned old_len; 547e948693eSPhilip Paeps 548e948693eSPhilip Paeps putp = &stdp->std_put; 549e948693eSPhilip Paeps new = (uintptr_t)mbuf; 550e948693eSPhilip Paeps 551e948693eSPhilip Paeps do { 552e948693eSPhilip Paeps old = *putp; 553b7b0edd1SGeorge V. Neville-Neil if (old != 0) { 554e948693eSPhilip Paeps struct mbuf *mp = (struct mbuf *)old; 555e948693eSPhilip Paeps old_len = mp->m_pkthdr.csum_data; 556e948693eSPhilip Paeps } else 557e948693eSPhilip Paeps old_len = 0; 55893929f25SAndrew Rybchenko if (old_len >= stdp->std_put_max) { 55993929f25SAndrew Rybchenko atomic_add_long(&txq->put_overflow, 1); 560c1974e29SGleb Smirnoff return (ENOBUFS); 56193929f25SAndrew Rybchenko } 562e948693eSPhilip Paeps mbuf->m_pkthdr.csum_data = old_len + 1; 563e948693eSPhilip Paeps mbuf->m_nextpkt = (void *)old; 564fb8ccc78SMarius Strobl } while (atomic_cmpset_ptr(putp, old, new) == 0); 565e948693eSPhilip Paeps } 566e948693eSPhilip Paeps 567e948693eSPhilip Paeps return (0); 568e948693eSPhilip Paeps } 569e948693eSPhilip Paeps 570e948693eSPhilip Paeps /* 571e948693eSPhilip Paeps * Called from if_transmit - will try to grab the txq lock and enqueue to the 572e948693eSPhilip Paeps * put list if it succeeds, otherwise will push onto the defer list. 573e948693eSPhilip Paeps */ 574e948693eSPhilip Paeps int 575e948693eSPhilip Paeps sfxge_tx_packet_add(struct sfxge_txq *txq, struct mbuf *m) 576e948693eSPhilip Paeps { 577e948693eSPhilip Paeps int locked; 578e948693eSPhilip Paeps int rc; 579e948693eSPhilip Paeps 580d7ac87d3SGleb Smirnoff if (!SFXGE_LINK_UP(txq->sc)) { 581d7ac87d3SGleb Smirnoff rc = ENETDOWN; 58293929f25SAndrew Rybchenko atomic_add_long(&txq->netdown_drops, 1); 583d7ac87d3SGleb Smirnoff goto fail; 584d7ac87d3SGleb Smirnoff } 585d7ac87d3SGleb Smirnoff 586e948693eSPhilip Paeps /* 587e948693eSPhilip Paeps * Try to grab the txq lock. If we are able to get the lock, 588e948693eSPhilip Paeps * the packet will be appended to the "get list" of the deferred 589e948693eSPhilip Paeps * packet list. Otherwise, it will be pushed on the "put list". 590e948693eSPhilip Paeps */ 591763cab71SAndrew Rybchenko locked = SFXGE_TXQ_TRYLOCK(txq); 592e948693eSPhilip Paeps 593e948693eSPhilip Paeps if (sfxge_tx_qdpl_put(txq, m, locked) != 0) { 594c1974e29SGleb Smirnoff if (locked) 595763cab71SAndrew Rybchenko SFXGE_TXQ_UNLOCK(txq); 596e948693eSPhilip Paeps rc = ENOBUFS; 597e948693eSPhilip Paeps goto fail; 598e948693eSPhilip Paeps } 599e948693eSPhilip Paeps 600e948693eSPhilip Paeps /* 601e948693eSPhilip Paeps * Try to grab the lock again. 602e948693eSPhilip Paeps * 603e948693eSPhilip Paeps * If we are able to get the lock, we need to process the deferred 604e948693eSPhilip Paeps * packet list. If we are not able to get the lock, another thread 605e948693eSPhilip Paeps * is processing the list. 606e948693eSPhilip Paeps */ 607e948693eSPhilip Paeps if (!locked) 608763cab71SAndrew Rybchenko locked = SFXGE_TXQ_TRYLOCK(txq); 609e948693eSPhilip Paeps 610e948693eSPhilip Paeps if (locked) { 611e948693eSPhilip Paeps /* Try to service the list. */ 612e948693eSPhilip Paeps sfxge_tx_qdpl_service(txq); 613e948693eSPhilip Paeps /* Lock has been dropped. */ 614e948693eSPhilip Paeps } 615e948693eSPhilip Paeps 616e948693eSPhilip Paeps return (0); 617e948693eSPhilip Paeps 618e948693eSPhilip Paeps fail: 61910d0bdcaSGeorge V. Neville-Neil m_freem(m); 620e948693eSPhilip Paeps return (rc); 621e948693eSPhilip Paeps } 622e948693eSPhilip Paeps 623e948693eSPhilip Paeps static void 624e948693eSPhilip Paeps sfxge_tx_qdpl_flush(struct sfxge_txq *txq) 625e948693eSPhilip Paeps { 626e948693eSPhilip Paeps struct sfxge_tx_dpl *stdp = &txq->dpl; 627e948693eSPhilip Paeps struct mbuf *mbuf, *next; 628e948693eSPhilip Paeps 629763cab71SAndrew Rybchenko SFXGE_TXQ_LOCK(txq); 630e948693eSPhilip Paeps 631e948693eSPhilip Paeps sfxge_tx_qdpl_swizzle(txq); 632e948693eSPhilip Paeps for (mbuf = stdp->std_get; mbuf != NULL; mbuf = next) { 633e948693eSPhilip Paeps next = mbuf->m_nextpkt; 634e948693eSPhilip Paeps m_freem(mbuf); 635e948693eSPhilip Paeps } 636e948693eSPhilip Paeps stdp->std_get = NULL; 637bc85c897SGeorge V. Neville-Neil stdp->std_get_count = 0; 63893929f25SAndrew Rybchenko stdp->std_get_non_tcp_count = 0; 639e948693eSPhilip Paeps stdp->std_getp = &stdp->std_get; 640e948693eSPhilip Paeps 641763cab71SAndrew Rybchenko SFXGE_TXQ_UNLOCK(txq); 642e948693eSPhilip Paeps } 643e948693eSPhilip Paeps 644e948693eSPhilip Paeps void 645e948693eSPhilip Paeps sfxge_if_qflush(struct ifnet *ifp) 646e948693eSPhilip Paeps { 647e948693eSPhilip Paeps struct sfxge_softc *sc; 648e948693eSPhilip Paeps int i; 649e948693eSPhilip Paeps 650e948693eSPhilip Paeps sc = ifp->if_softc; 651e948693eSPhilip Paeps 6522cd617a8SAndrew Rybchenko for (i = 0; i < SFXGE_TXQ_IP_TCP_UDP_CKSUM + SFXGE_TX_SCALE(sc); i++) 653e948693eSPhilip Paeps sfxge_tx_qdpl_flush(sc->txq[i]); 654e948693eSPhilip Paeps } 655e948693eSPhilip Paeps 656e948693eSPhilip Paeps /* 657e948693eSPhilip Paeps * TX start -- called by the stack. 658e948693eSPhilip Paeps */ 659e948693eSPhilip Paeps int 660e948693eSPhilip Paeps sfxge_if_transmit(struct ifnet *ifp, struct mbuf *m) 661e948693eSPhilip Paeps { 662e948693eSPhilip Paeps struct sfxge_softc *sc; 663e948693eSPhilip Paeps struct sfxge_txq *txq; 664e948693eSPhilip Paeps int rc; 665e948693eSPhilip Paeps 666e948693eSPhilip Paeps sc = (struct sfxge_softc *)ifp->if_softc; 667e948693eSPhilip Paeps 668e948693eSPhilip Paeps KASSERT(ifp->if_flags & IFF_UP, ("interface not up")); 669e948693eSPhilip Paeps 670e948693eSPhilip Paeps /* Pick the desired transmit queue. */ 671e948693eSPhilip Paeps if (m->m_pkthdr.csum_flags & (CSUM_DELAY_DATA | CSUM_TSO)) { 672e948693eSPhilip Paeps int index = 0; 673e948693eSPhilip Paeps 674c2529042SHans Petter Selasky /* check if flowid is set */ 675c2529042SHans Petter Selasky if (M_HASHTYPE_GET(m) != M_HASHTYPE_NONE) { 676e948693eSPhilip Paeps uint32_t hash = m->m_pkthdr.flowid; 677e948693eSPhilip Paeps 678e948693eSPhilip Paeps index = sc->rx_indir_table[hash % SFXGE_RX_SCALE_MAX]; 679e948693eSPhilip Paeps } 680e948693eSPhilip Paeps txq = sc->txq[SFXGE_TXQ_IP_TCP_UDP_CKSUM + index]; 681e948693eSPhilip Paeps } else if (m->m_pkthdr.csum_flags & CSUM_DELAY_IP) { 682e948693eSPhilip Paeps txq = sc->txq[SFXGE_TXQ_IP_CKSUM]; 683e948693eSPhilip Paeps } else { 684e948693eSPhilip Paeps txq = sc->txq[SFXGE_TXQ_NON_CKSUM]; 685e948693eSPhilip Paeps } 686e948693eSPhilip Paeps 687e948693eSPhilip Paeps rc = sfxge_tx_packet_add(txq, m); 688e948693eSPhilip Paeps 689e948693eSPhilip Paeps return (rc); 690e948693eSPhilip Paeps } 691e948693eSPhilip Paeps 692e948693eSPhilip Paeps #else /* !SFXGE_HAVE_MQ */ 693e948693eSPhilip Paeps 694e948693eSPhilip Paeps static void sfxge_if_start_locked(struct ifnet *ifp) 695e948693eSPhilip Paeps { 696e948693eSPhilip Paeps struct sfxge_softc *sc = ifp->if_softc; 697e948693eSPhilip Paeps struct sfxge_txq *txq; 698e948693eSPhilip Paeps struct mbuf *mbuf; 699e948693eSPhilip Paeps unsigned int pushed[SFXGE_TXQ_NTYPES]; 700e948693eSPhilip Paeps unsigned int q_index; 701e948693eSPhilip Paeps 702e948693eSPhilip Paeps if ((ifp->if_drv_flags & (IFF_DRV_RUNNING|IFF_DRV_OACTIVE)) != 703e948693eSPhilip Paeps IFF_DRV_RUNNING) 704e948693eSPhilip Paeps return; 705e948693eSPhilip Paeps 706e948693eSPhilip Paeps if (!sc->port.link_up) 707e948693eSPhilip Paeps return; 708e948693eSPhilip Paeps 709e948693eSPhilip Paeps for (q_index = 0; q_index < SFXGE_TXQ_NTYPES; q_index++) { 710e948693eSPhilip Paeps txq = sc->txq[q_index]; 711e948693eSPhilip Paeps pushed[q_index] = txq->added; 712e948693eSPhilip Paeps } 713e948693eSPhilip Paeps 714e948693eSPhilip Paeps while (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) { 715e948693eSPhilip Paeps IFQ_DRV_DEQUEUE(&ifp->if_snd, mbuf); 716e948693eSPhilip Paeps if (mbuf == NULL) 717e948693eSPhilip Paeps break; 718e948693eSPhilip Paeps 719e948693eSPhilip Paeps ETHER_BPF_MTAP(ifp, mbuf); /* packet capture */ 720e948693eSPhilip Paeps 721e948693eSPhilip Paeps /* Pick the desired transmit queue. */ 722e948693eSPhilip Paeps if (mbuf->m_pkthdr.csum_flags & (CSUM_DELAY_DATA | CSUM_TSO)) 723e948693eSPhilip Paeps q_index = SFXGE_TXQ_IP_TCP_UDP_CKSUM; 724e948693eSPhilip Paeps else if (mbuf->m_pkthdr.csum_flags & CSUM_DELAY_IP) 725e948693eSPhilip Paeps q_index = SFXGE_TXQ_IP_CKSUM; 726e948693eSPhilip Paeps else 727e948693eSPhilip Paeps q_index = SFXGE_TXQ_NON_CKSUM; 728e948693eSPhilip Paeps txq = sc->txq[q_index]; 729e948693eSPhilip Paeps 730e948693eSPhilip Paeps if (sfxge_tx_queue_mbuf(txq, mbuf) != 0) 731e948693eSPhilip Paeps continue; 732e948693eSPhilip Paeps 733e948693eSPhilip Paeps if (txq->blocked) { 734e948693eSPhilip Paeps ifp->if_drv_flags |= IFF_DRV_OACTIVE; 735e948693eSPhilip Paeps break; 736e948693eSPhilip Paeps } 737e948693eSPhilip Paeps 738e948693eSPhilip Paeps /* Push the fragments to the hardware in batches. */ 739e948693eSPhilip Paeps if (txq->added - pushed[q_index] >= SFXGE_TX_BATCH) { 740e948693eSPhilip Paeps efx_tx_qpush(txq->common, txq->added); 741e948693eSPhilip Paeps pushed[q_index] = txq->added; 742e948693eSPhilip Paeps } 743e948693eSPhilip Paeps } 744e948693eSPhilip Paeps 745e948693eSPhilip Paeps for (q_index = 0; q_index < SFXGE_TXQ_NTYPES; q_index++) { 746e948693eSPhilip Paeps txq = sc->txq[q_index]; 747e948693eSPhilip Paeps if (txq->added != pushed[q_index]) 748e948693eSPhilip Paeps efx_tx_qpush(txq->common, txq->added); 749e948693eSPhilip Paeps } 750e948693eSPhilip Paeps } 751e948693eSPhilip Paeps 752e948693eSPhilip Paeps void sfxge_if_start(struct ifnet *ifp) 753e948693eSPhilip Paeps { 754e948693eSPhilip Paeps struct sfxge_softc *sc = ifp->if_softc; 755e948693eSPhilip Paeps 756763cab71SAndrew Rybchenko SFXGE_TXQ_LOCK(sc->txq[0]); 757e948693eSPhilip Paeps sfxge_if_start_locked(ifp); 758763cab71SAndrew Rybchenko SFXGE_TXQ_UNLOCK(sc->txq[0]); 759e948693eSPhilip Paeps } 760e948693eSPhilip Paeps 7610b28bbdcSAndrew Rybchenko static void 762e948693eSPhilip Paeps sfxge_tx_qdpl_service(struct sfxge_txq *txq) 763e948693eSPhilip Paeps { 764763cab71SAndrew Rybchenko struct ifnet *ifp = txq->sc->ifnet; 765e948693eSPhilip Paeps 766763cab71SAndrew Rybchenko SFXGE_TXQ_LOCK_ASSERT_OWNED(txq); 767e948693eSPhilip Paeps ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 768e948693eSPhilip Paeps sfxge_if_start_locked(ifp); 769763cab71SAndrew Rybchenko SFXGE_TXQ_UNLOCK(txq); 770e948693eSPhilip Paeps } 771e948693eSPhilip Paeps 772e948693eSPhilip Paeps #endif /* SFXGE_HAVE_MQ */ 773e948693eSPhilip Paeps 774e948693eSPhilip Paeps /* 775e948693eSPhilip Paeps * Software "TSO". Not quite as good as doing it in hardware, but 776e948693eSPhilip Paeps * still faster than segmenting in the stack. 777e948693eSPhilip Paeps */ 778e948693eSPhilip Paeps 779e948693eSPhilip Paeps struct sfxge_tso_state { 780e948693eSPhilip Paeps /* Output position */ 781e948693eSPhilip Paeps unsigned out_len; /* Remaining length in current segment */ 782e948693eSPhilip Paeps unsigned seqnum; /* Current sequence number */ 783e948693eSPhilip Paeps unsigned packet_space; /* Remaining space in current packet */ 784e948693eSPhilip Paeps 785e948693eSPhilip Paeps /* Input position */ 786e948693eSPhilip Paeps uint64_t dma_addr; /* DMA address of current position */ 787e948693eSPhilip Paeps unsigned in_len; /* Remaining length in current mbuf */ 788e948693eSPhilip Paeps 789e948693eSPhilip Paeps const struct mbuf *mbuf; /* Input mbuf (head of chain) */ 790e948693eSPhilip Paeps u_short protocol; /* Network protocol (after VLAN decap) */ 791e948693eSPhilip Paeps ssize_t nh_off; /* Offset of network header */ 792e948693eSPhilip Paeps ssize_t tcph_off; /* Offset of TCP header */ 793e948693eSPhilip Paeps unsigned header_len; /* Number of bytes of header */ 794d0f73877SAndrew Rybchenko unsigned seg_size; /* TCP segment size */ 795e948693eSPhilip Paeps }; 796e948693eSPhilip Paeps 7970b28bbdcSAndrew Rybchenko static const struct ip *tso_iph(const struct sfxge_tso_state *tso) 798e948693eSPhilip Paeps { 799e948693eSPhilip Paeps KASSERT(tso->protocol == htons(ETHERTYPE_IP), 800e948693eSPhilip Paeps ("tso_iph() in non-IPv4 state")); 801e948693eSPhilip Paeps return (const struct ip *)(tso->mbuf->m_data + tso->nh_off); 802e948693eSPhilip Paeps } 8030b28bbdcSAndrew Rybchenko static __unused const struct ip6_hdr *tso_ip6h(const struct sfxge_tso_state *tso) 804e948693eSPhilip Paeps { 805e948693eSPhilip Paeps KASSERT(tso->protocol == htons(ETHERTYPE_IPV6), 806e948693eSPhilip Paeps ("tso_ip6h() in non-IPv6 state")); 807e948693eSPhilip Paeps return (const struct ip6_hdr *)(tso->mbuf->m_data + tso->nh_off); 808e948693eSPhilip Paeps } 8090b28bbdcSAndrew Rybchenko static const struct tcphdr *tso_tcph(const struct sfxge_tso_state *tso) 810e948693eSPhilip Paeps { 811e948693eSPhilip Paeps return (const struct tcphdr *)(tso->mbuf->m_data + tso->tcph_off); 812e948693eSPhilip Paeps } 813e948693eSPhilip Paeps 814e948693eSPhilip Paeps /* Size of preallocated TSO header buffers. Larger blocks must be 815e948693eSPhilip Paeps * allocated from the heap. 816e948693eSPhilip Paeps */ 817e948693eSPhilip Paeps #define TSOH_STD_SIZE 128 818e948693eSPhilip Paeps 819e948693eSPhilip Paeps /* At most half the descriptors in the queue at any time will refer to 820e948693eSPhilip Paeps * a TSO header buffer, since they must always be followed by a 821e948693eSPhilip Paeps * payload descriptor referring to an mbuf. 822e948693eSPhilip Paeps */ 823385b1d8eSGeorge V. Neville-Neil #define TSOH_COUNT(_txq_entries) ((_txq_entries) / 2u) 824e948693eSPhilip Paeps #define TSOH_PER_PAGE (PAGE_SIZE / TSOH_STD_SIZE) 825385b1d8eSGeorge V. Neville-Neil #define TSOH_PAGE_COUNT(_txq_entries) \ 826385b1d8eSGeorge V. Neville-Neil ((TSOH_COUNT(_txq_entries) + TSOH_PER_PAGE - 1) / TSOH_PER_PAGE) 827e948693eSPhilip Paeps 828e948693eSPhilip Paeps static int tso_init(struct sfxge_txq *txq) 829e948693eSPhilip Paeps { 830e948693eSPhilip Paeps struct sfxge_softc *sc = txq->sc; 831385b1d8eSGeorge V. Neville-Neil unsigned int tsoh_page_count = TSOH_PAGE_COUNT(sc->txq_entries); 832e948693eSPhilip Paeps int i, rc; 833e948693eSPhilip Paeps 834e948693eSPhilip Paeps /* Allocate TSO header buffers */ 835385b1d8eSGeorge V. Neville-Neil txq->tsoh_buffer = malloc(tsoh_page_count * sizeof(txq->tsoh_buffer[0]), 836e948693eSPhilip Paeps M_SFXGE, M_WAITOK); 837e948693eSPhilip Paeps 838385b1d8eSGeorge V. Neville-Neil for (i = 0; i < tsoh_page_count; i++) { 839e948693eSPhilip Paeps rc = sfxge_dma_alloc(sc, PAGE_SIZE, &txq->tsoh_buffer[i]); 840b7b0edd1SGeorge V. Neville-Neil if (rc != 0) 841e948693eSPhilip Paeps goto fail; 842e948693eSPhilip Paeps } 843e948693eSPhilip Paeps 844b7b0edd1SGeorge V. Neville-Neil return (0); 845e948693eSPhilip Paeps 846e948693eSPhilip Paeps fail: 847e948693eSPhilip Paeps while (i-- > 0) 848e948693eSPhilip Paeps sfxge_dma_free(&txq->tsoh_buffer[i]); 849e948693eSPhilip Paeps free(txq->tsoh_buffer, M_SFXGE); 850e948693eSPhilip Paeps txq->tsoh_buffer = NULL; 851b7b0edd1SGeorge V. Neville-Neil return (rc); 852e948693eSPhilip Paeps } 853e948693eSPhilip Paeps 854e948693eSPhilip Paeps static void tso_fini(struct sfxge_txq *txq) 855e948693eSPhilip Paeps { 856e948693eSPhilip Paeps int i; 857e948693eSPhilip Paeps 858b7b0edd1SGeorge V. Neville-Neil if (txq->tsoh_buffer != NULL) { 859385b1d8eSGeorge V. Neville-Neil for (i = 0; i < TSOH_PAGE_COUNT(txq->sc->txq_entries); i++) 860e948693eSPhilip Paeps sfxge_dma_free(&txq->tsoh_buffer[i]); 861e948693eSPhilip Paeps free(txq->tsoh_buffer, M_SFXGE); 862e948693eSPhilip Paeps } 863e948693eSPhilip Paeps } 864e948693eSPhilip Paeps 865e948693eSPhilip Paeps static void tso_start(struct sfxge_tso_state *tso, struct mbuf *mbuf) 866e948693eSPhilip Paeps { 867e948693eSPhilip Paeps struct ether_header *eh = mtod(mbuf, struct ether_header *); 868e948693eSPhilip Paeps 869e948693eSPhilip Paeps tso->mbuf = mbuf; 870e948693eSPhilip Paeps 871e948693eSPhilip Paeps /* Find network protocol and header */ 872e948693eSPhilip Paeps tso->protocol = eh->ether_type; 873e948693eSPhilip Paeps if (tso->protocol == htons(ETHERTYPE_VLAN)) { 874e948693eSPhilip Paeps struct ether_vlan_header *veh = 875e948693eSPhilip Paeps mtod(mbuf, struct ether_vlan_header *); 876e948693eSPhilip Paeps tso->protocol = veh->evl_proto; 877e948693eSPhilip Paeps tso->nh_off = sizeof(*veh); 878e948693eSPhilip Paeps } else { 879e948693eSPhilip Paeps tso->nh_off = sizeof(*eh); 880e948693eSPhilip Paeps } 881e948693eSPhilip Paeps 882e948693eSPhilip Paeps /* Find TCP header */ 883e948693eSPhilip Paeps if (tso->protocol == htons(ETHERTYPE_IP)) { 884e948693eSPhilip Paeps KASSERT(tso_iph(tso)->ip_p == IPPROTO_TCP, 885e948693eSPhilip Paeps ("TSO required on non-TCP packet")); 886e948693eSPhilip Paeps tso->tcph_off = tso->nh_off + 4 * tso_iph(tso)->ip_hl; 887e948693eSPhilip Paeps } else { 888e948693eSPhilip Paeps KASSERT(tso->protocol == htons(ETHERTYPE_IPV6), 889e948693eSPhilip Paeps ("TSO required on non-IP packet")); 890e948693eSPhilip Paeps KASSERT(tso_ip6h(tso)->ip6_nxt == IPPROTO_TCP, 891e948693eSPhilip Paeps ("TSO required on non-TCP packet")); 892e948693eSPhilip Paeps tso->tcph_off = tso->nh_off + sizeof(struct ip6_hdr); 893e948693eSPhilip Paeps } 894e948693eSPhilip Paeps 895e948693eSPhilip Paeps tso->header_len = tso->tcph_off + 4 * tso_tcph(tso)->th_off; 896d0f73877SAndrew Rybchenko tso->seg_size = mbuf->m_pkthdr.tso_segsz; 897e948693eSPhilip Paeps 898e948693eSPhilip Paeps tso->seqnum = ntohl(tso_tcph(tso)->th_seq); 899e948693eSPhilip Paeps 900e948693eSPhilip Paeps /* These flags must not be duplicated */ 901e948693eSPhilip Paeps KASSERT(!(tso_tcph(tso)->th_flags & (TH_URG | TH_SYN | TH_RST)), 902e948693eSPhilip Paeps ("incompatible TCP flag on TSO packet")); 903e948693eSPhilip Paeps 904e948693eSPhilip Paeps tso->out_len = mbuf->m_pkthdr.len - tso->header_len; 905e948693eSPhilip Paeps } 906e948693eSPhilip Paeps 907e948693eSPhilip Paeps /* 908e948693eSPhilip Paeps * tso_fill_packet_with_fragment - form descriptors for the current fragment 909e948693eSPhilip Paeps * 910e948693eSPhilip Paeps * Form descriptors for the current fragment, until we reach the end 911e948693eSPhilip Paeps * of fragment or end-of-packet. Return 0 on success, 1 if not enough 912e948693eSPhilip Paeps * space. 913e948693eSPhilip Paeps */ 914e948693eSPhilip Paeps static void tso_fill_packet_with_fragment(struct sfxge_txq *txq, 915e948693eSPhilip Paeps struct sfxge_tso_state *tso) 916e948693eSPhilip Paeps { 917e948693eSPhilip Paeps efx_buffer_t *desc; 918e948693eSPhilip Paeps int n; 919e948693eSPhilip Paeps 920e948693eSPhilip Paeps if (tso->in_len == 0 || tso->packet_space == 0) 921e948693eSPhilip Paeps return; 922e948693eSPhilip Paeps 923e948693eSPhilip Paeps KASSERT(tso->in_len > 0, ("TSO input length went negative")); 924e948693eSPhilip Paeps KASSERT(tso->packet_space > 0, ("TSO packet space went negative")); 925e948693eSPhilip Paeps 926e948693eSPhilip Paeps n = min(tso->in_len, tso->packet_space); 927e948693eSPhilip Paeps 928e948693eSPhilip Paeps tso->packet_space -= n; 929e948693eSPhilip Paeps tso->out_len -= n; 930e948693eSPhilip Paeps tso->in_len -= n; 931e948693eSPhilip Paeps 932e948693eSPhilip Paeps desc = &txq->pend_desc[txq->n_pend_desc++]; 933e948693eSPhilip Paeps desc->eb_addr = tso->dma_addr; 934e948693eSPhilip Paeps desc->eb_size = n; 935e948693eSPhilip Paeps desc->eb_eop = tso->out_len == 0 || tso->packet_space == 0; 936e948693eSPhilip Paeps 937e948693eSPhilip Paeps tso->dma_addr += n; 938e948693eSPhilip Paeps } 939e948693eSPhilip Paeps 940e948693eSPhilip Paeps /* Callback from bus_dmamap_load() for long TSO headers. */ 941e948693eSPhilip Paeps static void tso_map_long_header(void *dma_addr_ret, 942e948693eSPhilip Paeps bus_dma_segment_t *segs, int nseg, 943e948693eSPhilip Paeps int error) 944e948693eSPhilip Paeps { 945e948693eSPhilip Paeps *(uint64_t *)dma_addr_ret = ((__predict_true(error == 0) && 946e948693eSPhilip Paeps __predict_true(nseg == 1)) ? 947e948693eSPhilip Paeps segs->ds_addr : 0); 948e948693eSPhilip Paeps } 949e948693eSPhilip Paeps 950e948693eSPhilip Paeps /* 951e948693eSPhilip Paeps * tso_start_new_packet - generate a new header and prepare for the new packet 952e948693eSPhilip Paeps * 953e948693eSPhilip Paeps * Generate a new header and prepare for the new packet. Return 0 on 954e948693eSPhilip Paeps * success, or an error code if failed to alloc header. 955e948693eSPhilip Paeps */ 956e948693eSPhilip Paeps static int tso_start_new_packet(struct sfxge_txq *txq, 957e948693eSPhilip Paeps struct sfxge_tso_state *tso, 958e948693eSPhilip Paeps unsigned int id) 959e948693eSPhilip Paeps { 960e948693eSPhilip Paeps struct sfxge_tx_mapping *stmp = &txq->stmp[id]; 961e948693eSPhilip Paeps struct tcphdr *tsoh_th; 962e948693eSPhilip Paeps unsigned ip_length; 963e948693eSPhilip Paeps caddr_t header; 964e948693eSPhilip Paeps uint64_t dma_addr; 965e948693eSPhilip Paeps bus_dmamap_t map; 966e948693eSPhilip Paeps efx_buffer_t *desc; 967e948693eSPhilip Paeps int rc; 968e948693eSPhilip Paeps 969e948693eSPhilip Paeps /* Allocate a DMA-mapped header buffer. */ 970e948693eSPhilip Paeps if (__predict_true(tso->header_len <= TSOH_STD_SIZE)) { 971e948693eSPhilip Paeps unsigned int page_index = (id / 2) / TSOH_PER_PAGE; 972e948693eSPhilip Paeps unsigned int buf_index = (id / 2) % TSOH_PER_PAGE; 973e948693eSPhilip Paeps 974e948693eSPhilip Paeps header = (txq->tsoh_buffer[page_index].esm_base + 975e948693eSPhilip Paeps buf_index * TSOH_STD_SIZE); 976e948693eSPhilip Paeps dma_addr = (txq->tsoh_buffer[page_index].esm_addr + 977e948693eSPhilip Paeps buf_index * TSOH_STD_SIZE); 978e948693eSPhilip Paeps map = txq->tsoh_buffer[page_index].esm_map; 979e948693eSPhilip Paeps 980e948693eSPhilip Paeps stmp->flags = 0; 981e948693eSPhilip Paeps } else { 982e948693eSPhilip Paeps /* We cannot use bus_dmamem_alloc() as that may sleep */ 983e948693eSPhilip Paeps header = malloc(tso->header_len, M_SFXGE, M_NOWAIT); 984e948693eSPhilip Paeps if (__predict_false(!header)) 985b7b0edd1SGeorge V. Neville-Neil return (ENOMEM); 986e948693eSPhilip Paeps rc = bus_dmamap_load(txq->packet_dma_tag, stmp->map, 987e948693eSPhilip Paeps header, tso->header_len, 988e948693eSPhilip Paeps tso_map_long_header, &dma_addr, 989e948693eSPhilip Paeps BUS_DMA_NOWAIT); 990e948693eSPhilip Paeps if (__predict_false(dma_addr == 0)) { 991e948693eSPhilip Paeps if (rc == 0) { 992e948693eSPhilip Paeps /* Succeeded but got >1 segment */ 993e948693eSPhilip Paeps bus_dmamap_unload(txq->packet_dma_tag, 994e948693eSPhilip Paeps stmp->map); 995e948693eSPhilip Paeps rc = EINVAL; 996e948693eSPhilip Paeps } 997e948693eSPhilip Paeps free(header, M_SFXGE); 998b7b0edd1SGeorge V. Neville-Neil return (rc); 999e948693eSPhilip Paeps } 1000e948693eSPhilip Paeps map = stmp->map; 1001e948693eSPhilip Paeps 1002e948693eSPhilip Paeps txq->tso_long_headers++; 1003e948693eSPhilip Paeps stmp->u.heap_buf = header; 1004e948693eSPhilip Paeps stmp->flags = TX_BUF_UNMAP; 1005e948693eSPhilip Paeps } 1006e948693eSPhilip Paeps 1007e948693eSPhilip Paeps tsoh_th = (struct tcphdr *)(header + tso->tcph_off); 1008e948693eSPhilip Paeps 1009e948693eSPhilip Paeps /* Copy and update the headers. */ 1010a35485aaSAndrew Rybchenko m_copydata(tso->mbuf, 0, tso->header_len, header); 1011e948693eSPhilip Paeps 1012e948693eSPhilip Paeps tsoh_th->th_seq = htonl(tso->seqnum); 1013d0f73877SAndrew Rybchenko tso->seqnum += tso->seg_size; 1014d0f73877SAndrew Rybchenko if (tso->out_len > tso->seg_size) { 1015e948693eSPhilip Paeps /* This packet will not finish the TSO burst. */ 1016d0f73877SAndrew Rybchenko ip_length = tso->header_len - tso->nh_off + tso->seg_size; 1017e948693eSPhilip Paeps tsoh_th->th_flags &= ~(TH_FIN | TH_PUSH); 1018e948693eSPhilip Paeps } else { 1019e948693eSPhilip Paeps /* This packet will be the last in the TSO burst. */ 1020e948693eSPhilip Paeps ip_length = tso->header_len - tso->nh_off + tso->out_len; 1021e948693eSPhilip Paeps } 1022e948693eSPhilip Paeps 1023e948693eSPhilip Paeps if (tso->protocol == htons(ETHERTYPE_IP)) { 1024e948693eSPhilip Paeps struct ip *tsoh_iph = (struct ip *)(header + tso->nh_off); 1025e948693eSPhilip Paeps tsoh_iph->ip_len = htons(ip_length); 1026e948693eSPhilip Paeps /* XXX We should increment ip_id, but FreeBSD doesn't 1027e948693eSPhilip Paeps * currently allocate extra IDs for multiple segments. 1028e948693eSPhilip Paeps */ 1029e948693eSPhilip Paeps } else { 1030e948693eSPhilip Paeps struct ip6_hdr *tsoh_iph = 1031e948693eSPhilip Paeps (struct ip6_hdr *)(header + tso->nh_off); 1032e948693eSPhilip Paeps tsoh_iph->ip6_plen = htons(ip_length - sizeof(*tsoh_iph)); 1033e948693eSPhilip Paeps } 1034e948693eSPhilip Paeps 1035e948693eSPhilip Paeps /* Make the header visible to the hardware. */ 1036e948693eSPhilip Paeps bus_dmamap_sync(txq->packet_dma_tag, map, BUS_DMASYNC_PREWRITE); 1037e948693eSPhilip Paeps 1038d0f73877SAndrew Rybchenko tso->packet_space = tso->seg_size; 1039e948693eSPhilip Paeps txq->tso_packets++; 1040e948693eSPhilip Paeps 1041e948693eSPhilip Paeps /* Form a descriptor for this header. */ 1042e948693eSPhilip Paeps desc = &txq->pend_desc[txq->n_pend_desc++]; 1043e948693eSPhilip Paeps desc->eb_addr = dma_addr; 1044e948693eSPhilip Paeps desc->eb_size = tso->header_len; 1045e948693eSPhilip Paeps desc->eb_eop = 0; 1046e948693eSPhilip Paeps 1047b7b0edd1SGeorge V. Neville-Neil return (0); 1048e948693eSPhilip Paeps } 1049e948693eSPhilip Paeps 1050e948693eSPhilip Paeps static int 1051e948693eSPhilip Paeps sfxge_tx_queue_tso(struct sfxge_txq *txq, struct mbuf *mbuf, 1052e948693eSPhilip Paeps const bus_dma_segment_t *dma_seg, int n_dma_seg) 1053e948693eSPhilip Paeps { 1054e948693eSPhilip Paeps struct sfxge_tso_state tso; 1055e948693eSPhilip Paeps unsigned int id, next_id; 1056a35485aaSAndrew Rybchenko unsigned skipped = 0; 1057e948693eSPhilip Paeps 1058e948693eSPhilip Paeps tso_start(&tso, mbuf); 1059e948693eSPhilip Paeps 1060a35485aaSAndrew Rybchenko while (dma_seg->ds_len + skipped <= tso.header_len) { 1061a35485aaSAndrew Rybchenko skipped += dma_seg->ds_len; 1062e948693eSPhilip Paeps --n_dma_seg; 1063e948693eSPhilip Paeps KASSERT(n_dma_seg, ("no payload found in TSO packet")); 1064e948693eSPhilip Paeps ++dma_seg; 1065e948693eSPhilip Paeps } 1066a35485aaSAndrew Rybchenko tso.in_len = dma_seg->ds_len + (tso.header_len - skipped); 1067a35485aaSAndrew Rybchenko tso.dma_addr = dma_seg->ds_addr + (tso.header_len - skipped); 1068e948693eSPhilip Paeps 1069385b1d8eSGeorge V. Neville-Neil id = txq->added & txq->ptr_mask; 1070e948693eSPhilip Paeps if (__predict_false(tso_start_new_packet(txq, &tso, id))) 1071385b1d8eSGeorge V. Neville-Neil return (-1); 1072e948693eSPhilip Paeps 1073e948693eSPhilip Paeps while (1) { 1074385b1d8eSGeorge V. Neville-Neil id = (id + 1) & txq->ptr_mask; 1075e948693eSPhilip Paeps tso_fill_packet_with_fragment(txq, &tso); 1076e948693eSPhilip Paeps 1077e948693eSPhilip Paeps /* Move onto the next fragment? */ 1078e948693eSPhilip Paeps if (tso.in_len == 0) { 1079e948693eSPhilip Paeps --n_dma_seg; 1080e948693eSPhilip Paeps if (n_dma_seg == 0) 1081e948693eSPhilip Paeps break; 1082e948693eSPhilip Paeps ++dma_seg; 1083e948693eSPhilip Paeps tso.in_len = dma_seg->ds_len; 1084e948693eSPhilip Paeps tso.dma_addr = dma_seg->ds_addr; 1085e948693eSPhilip Paeps } 1086e948693eSPhilip Paeps 1087e948693eSPhilip Paeps /* End of packet? */ 1088e948693eSPhilip Paeps if (tso.packet_space == 0) { 1089e948693eSPhilip Paeps /* If the queue is now full due to tiny MSS, 1090e948693eSPhilip Paeps * or we can't create another header, discard 1091e948693eSPhilip Paeps * the remainder of the input mbuf but do not 1092e948693eSPhilip Paeps * roll back the work we have done. 1093e948693eSPhilip Paeps */ 1094e948693eSPhilip Paeps if (txq->n_pend_desc > 1095e1a3d10eSAndrew Rybchenko SFXGE_TSO_MAX_DESC - (1 + SFXGE_TX_MAPPING_MAX_SEG)) { 1096e1a3d10eSAndrew Rybchenko txq->tso_pdrop_too_many++; 1097e948693eSPhilip Paeps break; 1098e1a3d10eSAndrew Rybchenko } 1099385b1d8eSGeorge V. Neville-Neil next_id = (id + 1) & txq->ptr_mask; 1100e948693eSPhilip Paeps if (__predict_false(tso_start_new_packet(txq, &tso, 1101e1a3d10eSAndrew Rybchenko next_id))) { 1102e1a3d10eSAndrew Rybchenko txq->tso_pdrop_no_rsrc++; 1103e948693eSPhilip Paeps break; 1104e1a3d10eSAndrew Rybchenko } 1105e948693eSPhilip Paeps id = next_id; 1106e948693eSPhilip Paeps } 1107e948693eSPhilip Paeps } 1108e948693eSPhilip Paeps 1109e948693eSPhilip Paeps txq->tso_bursts++; 1110b7b0edd1SGeorge V. Neville-Neil return (id); 1111e948693eSPhilip Paeps } 1112e948693eSPhilip Paeps 1113e948693eSPhilip Paeps static void 1114e948693eSPhilip Paeps sfxge_tx_qunblock(struct sfxge_txq *txq) 1115e948693eSPhilip Paeps { 1116e948693eSPhilip Paeps struct sfxge_softc *sc; 1117e948693eSPhilip Paeps struct sfxge_evq *evq; 1118e948693eSPhilip Paeps 1119e948693eSPhilip Paeps sc = txq->sc; 1120e948693eSPhilip Paeps evq = sc->evq[txq->evq_index]; 1121e948693eSPhilip Paeps 1122763cab71SAndrew Rybchenko SFXGE_EVQ_LOCK_ASSERT_OWNED(evq); 1123e948693eSPhilip Paeps 1124e948693eSPhilip Paeps if (txq->init_state != SFXGE_TXQ_STARTED) 1125e948693eSPhilip Paeps return; 1126e948693eSPhilip Paeps 1127763cab71SAndrew Rybchenko SFXGE_TXQ_LOCK(txq); 1128e948693eSPhilip Paeps 1129e948693eSPhilip Paeps if (txq->blocked) { 1130e948693eSPhilip Paeps unsigned int level; 1131e948693eSPhilip Paeps 1132e948693eSPhilip Paeps level = txq->added - txq->completed; 1133385b1d8eSGeorge V. Neville-Neil if (level <= SFXGE_TXQ_UNBLOCK_LEVEL(txq->entries)) 1134e948693eSPhilip Paeps txq->blocked = 0; 1135e948693eSPhilip Paeps } 1136e948693eSPhilip Paeps 1137e948693eSPhilip Paeps sfxge_tx_qdpl_service(txq); 1138e948693eSPhilip Paeps /* note: lock has been dropped */ 1139e948693eSPhilip Paeps } 1140e948693eSPhilip Paeps 1141e948693eSPhilip Paeps void 1142e948693eSPhilip Paeps sfxge_tx_qflush_done(struct sfxge_txq *txq) 1143e948693eSPhilip Paeps { 1144e948693eSPhilip Paeps 1145e948693eSPhilip Paeps txq->flush_state = SFXGE_FLUSH_DONE; 1146e948693eSPhilip Paeps } 1147e948693eSPhilip Paeps 1148e948693eSPhilip Paeps static void 1149e948693eSPhilip Paeps sfxge_tx_qstop(struct sfxge_softc *sc, unsigned int index) 1150e948693eSPhilip Paeps { 1151e948693eSPhilip Paeps struct sfxge_txq *txq; 1152e948693eSPhilip Paeps struct sfxge_evq *evq; 1153e948693eSPhilip Paeps unsigned int count; 1154e948693eSPhilip Paeps 1155e948693eSPhilip Paeps txq = sc->txq[index]; 1156e948693eSPhilip Paeps evq = sc->evq[txq->evq_index]; 1157e948693eSPhilip Paeps 1158763cab71SAndrew Rybchenko SFXGE_TXQ_LOCK(txq); 1159e948693eSPhilip Paeps 1160e948693eSPhilip Paeps KASSERT(txq->init_state == SFXGE_TXQ_STARTED, 1161e948693eSPhilip Paeps ("txq->init_state != SFXGE_TXQ_STARTED")); 1162e948693eSPhilip Paeps 1163e948693eSPhilip Paeps txq->init_state = SFXGE_TXQ_INITIALIZED; 1164e948693eSPhilip Paeps txq->flush_state = SFXGE_FLUSH_PENDING; 1165e948693eSPhilip Paeps 1166e948693eSPhilip Paeps /* Flush the transmit queue. */ 1167e948693eSPhilip Paeps efx_tx_qflush(txq->common); 1168e948693eSPhilip Paeps 1169763cab71SAndrew Rybchenko SFXGE_TXQ_UNLOCK(txq); 1170e948693eSPhilip Paeps 1171e948693eSPhilip Paeps count = 0; 1172e948693eSPhilip Paeps do { 1173e948693eSPhilip Paeps /* Spin for 100ms. */ 1174e948693eSPhilip Paeps DELAY(100000); 1175e948693eSPhilip Paeps 1176e948693eSPhilip Paeps if (txq->flush_state != SFXGE_FLUSH_PENDING) 1177e948693eSPhilip Paeps break; 1178e948693eSPhilip Paeps } while (++count < 20); 1179e948693eSPhilip Paeps 1180763cab71SAndrew Rybchenko SFXGE_EVQ_LOCK(evq); 1181763cab71SAndrew Rybchenko SFXGE_TXQ_LOCK(txq); 1182e948693eSPhilip Paeps 1183e948693eSPhilip Paeps KASSERT(txq->flush_state != SFXGE_FLUSH_FAILED, 1184e948693eSPhilip Paeps ("txq->flush_state == SFXGE_FLUSH_FAILED")); 1185e948693eSPhilip Paeps 1186e948693eSPhilip Paeps txq->flush_state = SFXGE_FLUSH_DONE; 1187e948693eSPhilip Paeps 1188e948693eSPhilip Paeps txq->blocked = 0; 1189e948693eSPhilip Paeps txq->pending = txq->added; 1190e948693eSPhilip Paeps 1191cc933626SAndrew Rybchenko sfxge_tx_qcomplete(txq, evq); 1192e948693eSPhilip Paeps KASSERT(txq->completed == txq->added, 1193e948693eSPhilip Paeps ("txq->completed != txq->added")); 1194e948693eSPhilip Paeps 1195e948693eSPhilip Paeps sfxge_tx_qreap(txq); 1196e948693eSPhilip Paeps KASSERT(txq->reaped == txq->completed, 1197e948693eSPhilip Paeps ("txq->reaped != txq->completed")); 1198e948693eSPhilip Paeps 1199e948693eSPhilip Paeps txq->added = 0; 1200e948693eSPhilip Paeps txq->pending = 0; 1201e948693eSPhilip Paeps txq->completed = 0; 1202e948693eSPhilip Paeps txq->reaped = 0; 1203e948693eSPhilip Paeps 1204e948693eSPhilip Paeps /* Destroy the common code transmit queue. */ 1205e948693eSPhilip Paeps efx_tx_qdestroy(txq->common); 1206e948693eSPhilip Paeps txq->common = NULL; 1207e948693eSPhilip Paeps 1208e948693eSPhilip Paeps efx_sram_buf_tbl_clear(sc->enp, txq->buf_base_id, 1209385b1d8eSGeorge V. Neville-Neil EFX_TXQ_NBUFS(sc->txq_entries)); 1210e948693eSPhilip Paeps 1211763cab71SAndrew Rybchenko SFXGE_EVQ_UNLOCK(evq); 1212763cab71SAndrew Rybchenko SFXGE_TXQ_UNLOCK(txq); 1213e948693eSPhilip Paeps } 1214e948693eSPhilip Paeps 1215e948693eSPhilip Paeps static int 1216e948693eSPhilip Paeps sfxge_tx_qstart(struct sfxge_softc *sc, unsigned int index) 1217e948693eSPhilip Paeps { 1218e948693eSPhilip Paeps struct sfxge_txq *txq; 1219e948693eSPhilip Paeps efsys_mem_t *esmp; 1220e948693eSPhilip Paeps uint16_t flags; 1221e948693eSPhilip Paeps struct sfxge_evq *evq; 1222e948693eSPhilip Paeps int rc; 1223e948693eSPhilip Paeps 1224e948693eSPhilip Paeps txq = sc->txq[index]; 1225e948693eSPhilip Paeps esmp = &txq->mem; 1226e948693eSPhilip Paeps evq = sc->evq[txq->evq_index]; 1227e948693eSPhilip Paeps 1228e948693eSPhilip Paeps KASSERT(txq->init_state == SFXGE_TXQ_INITIALIZED, 1229e948693eSPhilip Paeps ("txq->init_state != SFXGE_TXQ_INITIALIZED")); 1230e948693eSPhilip Paeps KASSERT(evq->init_state == SFXGE_EVQ_STARTED, 1231e948693eSPhilip Paeps ("evq->init_state != SFXGE_EVQ_STARTED")); 1232e948693eSPhilip Paeps 1233e948693eSPhilip Paeps /* Program the buffer table. */ 1234e948693eSPhilip Paeps if ((rc = efx_sram_buf_tbl_set(sc->enp, txq->buf_base_id, esmp, 1235385b1d8eSGeorge V. Neville-Neil EFX_TXQ_NBUFS(sc->txq_entries))) != 0) 1236385b1d8eSGeorge V. Neville-Neil return (rc); 1237e948693eSPhilip Paeps 1238e948693eSPhilip Paeps /* Determine the kind of queue we are creating. */ 1239e948693eSPhilip Paeps switch (txq->type) { 1240e948693eSPhilip Paeps case SFXGE_TXQ_NON_CKSUM: 1241e948693eSPhilip Paeps flags = 0; 1242e948693eSPhilip Paeps break; 1243e948693eSPhilip Paeps case SFXGE_TXQ_IP_CKSUM: 1244e948693eSPhilip Paeps flags = EFX_CKSUM_IPV4; 1245e948693eSPhilip Paeps break; 1246e948693eSPhilip Paeps case SFXGE_TXQ_IP_TCP_UDP_CKSUM: 1247e948693eSPhilip Paeps flags = EFX_CKSUM_IPV4 | EFX_CKSUM_TCPUDP; 1248e948693eSPhilip Paeps break; 1249e948693eSPhilip Paeps default: 1250e948693eSPhilip Paeps KASSERT(0, ("Impossible TX queue")); 1251e948693eSPhilip Paeps flags = 0; 1252e948693eSPhilip Paeps break; 1253e948693eSPhilip Paeps } 1254e948693eSPhilip Paeps 1255e948693eSPhilip Paeps /* Create the common code transmit queue. */ 1256cf07c70dSGeorge V. Neville-Neil if ((rc = efx_tx_qcreate(sc->enp, index, txq->type, esmp, 1257385b1d8eSGeorge V. Neville-Neil sc->txq_entries, txq->buf_base_id, flags, evq->common, 1258e948693eSPhilip Paeps &txq->common)) != 0) 1259e948693eSPhilip Paeps goto fail; 1260e948693eSPhilip Paeps 1261763cab71SAndrew Rybchenko SFXGE_TXQ_LOCK(txq); 1262e948693eSPhilip Paeps 1263e948693eSPhilip Paeps /* Enable the transmit queue. */ 1264e948693eSPhilip Paeps efx_tx_qenable(txq->common); 1265e948693eSPhilip Paeps 1266e948693eSPhilip Paeps txq->init_state = SFXGE_TXQ_STARTED; 1267e948693eSPhilip Paeps 1268763cab71SAndrew Rybchenko SFXGE_TXQ_UNLOCK(txq); 1269e948693eSPhilip Paeps 1270e948693eSPhilip Paeps return (0); 1271e948693eSPhilip Paeps 1272e948693eSPhilip Paeps fail: 1273e948693eSPhilip Paeps efx_sram_buf_tbl_clear(sc->enp, txq->buf_base_id, 1274385b1d8eSGeorge V. Neville-Neil EFX_TXQ_NBUFS(sc->txq_entries)); 1275385b1d8eSGeorge V. Neville-Neil return (rc); 1276e948693eSPhilip Paeps } 1277e948693eSPhilip Paeps 1278e948693eSPhilip Paeps void 1279e948693eSPhilip Paeps sfxge_tx_stop(struct sfxge_softc *sc) 1280e948693eSPhilip Paeps { 1281e948693eSPhilip Paeps int index; 1282e948693eSPhilip Paeps 1283e948693eSPhilip Paeps index = SFXGE_TX_SCALE(sc); 1284e948693eSPhilip Paeps while (--index >= 0) 1285e948693eSPhilip Paeps sfxge_tx_qstop(sc, SFXGE_TXQ_IP_TCP_UDP_CKSUM + index); 1286e948693eSPhilip Paeps 1287e948693eSPhilip Paeps sfxge_tx_qstop(sc, SFXGE_TXQ_IP_CKSUM); 1288e948693eSPhilip Paeps 1289e948693eSPhilip Paeps sfxge_tx_qstop(sc, SFXGE_TXQ_NON_CKSUM); 1290e948693eSPhilip Paeps 1291e948693eSPhilip Paeps /* Tear down the transmit module */ 1292e948693eSPhilip Paeps efx_tx_fini(sc->enp); 1293e948693eSPhilip Paeps } 1294e948693eSPhilip Paeps 1295e948693eSPhilip Paeps int 1296e948693eSPhilip Paeps sfxge_tx_start(struct sfxge_softc *sc) 1297e948693eSPhilip Paeps { 1298e948693eSPhilip Paeps int index; 1299e948693eSPhilip Paeps int rc; 1300e948693eSPhilip Paeps 1301e948693eSPhilip Paeps /* Initialize the common code transmit module. */ 1302e948693eSPhilip Paeps if ((rc = efx_tx_init(sc->enp)) != 0) 1303e948693eSPhilip Paeps return (rc); 1304e948693eSPhilip Paeps 1305e948693eSPhilip Paeps if ((rc = sfxge_tx_qstart(sc, SFXGE_TXQ_NON_CKSUM)) != 0) 1306e948693eSPhilip Paeps goto fail; 1307e948693eSPhilip Paeps 1308e948693eSPhilip Paeps if ((rc = sfxge_tx_qstart(sc, SFXGE_TXQ_IP_CKSUM)) != 0) 1309e948693eSPhilip Paeps goto fail2; 1310e948693eSPhilip Paeps 1311e948693eSPhilip Paeps for (index = 0; index < SFXGE_TX_SCALE(sc); index++) { 1312e948693eSPhilip Paeps if ((rc = sfxge_tx_qstart(sc, SFXGE_TXQ_IP_TCP_UDP_CKSUM + 1313e948693eSPhilip Paeps index)) != 0) 1314e948693eSPhilip Paeps goto fail3; 1315e948693eSPhilip Paeps } 1316e948693eSPhilip Paeps 1317e948693eSPhilip Paeps return (0); 1318e948693eSPhilip Paeps 1319e948693eSPhilip Paeps fail3: 1320e948693eSPhilip Paeps while (--index >= 0) 1321e948693eSPhilip Paeps sfxge_tx_qstop(sc, SFXGE_TXQ_IP_TCP_UDP_CKSUM + index); 1322e948693eSPhilip Paeps 1323e948693eSPhilip Paeps sfxge_tx_qstop(sc, SFXGE_TXQ_IP_CKSUM); 1324e948693eSPhilip Paeps 1325e948693eSPhilip Paeps fail2: 1326e948693eSPhilip Paeps sfxge_tx_qstop(sc, SFXGE_TXQ_NON_CKSUM); 1327e948693eSPhilip Paeps 1328e948693eSPhilip Paeps fail: 1329e948693eSPhilip Paeps efx_tx_fini(sc->enp); 1330e948693eSPhilip Paeps 1331e948693eSPhilip Paeps return (rc); 1332e948693eSPhilip Paeps } 1333e948693eSPhilip Paeps 1334e948693eSPhilip Paeps /** 1335e948693eSPhilip Paeps * Destroy a transmit queue. 1336e948693eSPhilip Paeps */ 1337e948693eSPhilip Paeps static void 1338e948693eSPhilip Paeps sfxge_tx_qfini(struct sfxge_softc *sc, unsigned int index) 1339e948693eSPhilip Paeps { 1340e948693eSPhilip Paeps struct sfxge_txq *txq; 1341385b1d8eSGeorge V. Neville-Neil unsigned int nmaps; 1342e948693eSPhilip Paeps 1343e948693eSPhilip Paeps txq = sc->txq[index]; 1344e948693eSPhilip Paeps 1345e948693eSPhilip Paeps KASSERT(txq->init_state == SFXGE_TXQ_INITIALIZED, 1346e948693eSPhilip Paeps ("txq->init_state != SFXGE_TXQ_INITIALIZED")); 1347e948693eSPhilip Paeps 1348e948693eSPhilip Paeps if (txq->type == SFXGE_TXQ_IP_TCP_UDP_CKSUM) 1349e948693eSPhilip Paeps tso_fini(txq); 1350e948693eSPhilip Paeps 1351e948693eSPhilip Paeps /* Free the context arrays. */ 1352e948693eSPhilip Paeps free(txq->pend_desc, M_SFXGE); 1353385b1d8eSGeorge V. Neville-Neil nmaps = sc->txq_entries; 1354b7b0edd1SGeorge V. Neville-Neil while (nmaps-- != 0) 1355e948693eSPhilip Paeps bus_dmamap_destroy(txq->packet_dma_tag, txq->stmp[nmaps].map); 1356e948693eSPhilip Paeps free(txq->stmp, M_SFXGE); 1357e948693eSPhilip Paeps 1358e948693eSPhilip Paeps /* Release DMA memory mapping. */ 1359e948693eSPhilip Paeps sfxge_dma_free(&txq->mem); 1360e948693eSPhilip Paeps 1361e948693eSPhilip Paeps sc->txq[index] = NULL; 1362e948693eSPhilip Paeps 1363e948693eSPhilip Paeps #ifdef SFXGE_HAVE_MQ 1364763cab71SAndrew Rybchenko SFXGE_TXQ_LOCK_DESTROY(txq); 1365e948693eSPhilip Paeps #endif 1366e948693eSPhilip Paeps 1367e948693eSPhilip Paeps free(txq, M_SFXGE); 1368e948693eSPhilip Paeps } 1369e948693eSPhilip Paeps 1370e948693eSPhilip Paeps static int 1371e948693eSPhilip Paeps sfxge_tx_qinit(struct sfxge_softc *sc, unsigned int txq_index, 1372e948693eSPhilip Paeps enum sfxge_txq_type type, unsigned int evq_index) 1373e948693eSPhilip Paeps { 1374bc85c897SGeorge V. Neville-Neil char name[16]; 1375bc85c897SGeorge V. Neville-Neil struct sysctl_oid *txq_node; 1376e948693eSPhilip Paeps struct sfxge_txq *txq; 1377e948693eSPhilip Paeps struct sfxge_evq *evq; 1378e948693eSPhilip Paeps #ifdef SFXGE_HAVE_MQ 1379e948693eSPhilip Paeps struct sfxge_tx_dpl *stdp; 1380e948693eSPhilip Paeps #endif 1381e948693eSPhilip Paeps efsys_mem_t *esmp; 1382e948693eSPhilip Paeps unsigned int nmaps; 1383e948693eSPhilip Paeps int rc; 1384e948693eSPhilip Paeps 1385e948693eSPhilip Paeps txq = malloc(sizeof(struct sfxge_txq), M_SFXGE, M_ZERO | M_WAITOK); 1386e948693eSPhilip Paeps txq->sc = sc; 1387385b1d8eSGeorge V. Neville-Neil txq->entries = sc->txq_entries; 1388385b1d8eSGeorge V. Neville-Neil txq->ptr_mask = txq->entries - 1; 1389e948693eSPhilip Paeps 1390e948693eSPhilip Paeps sc->txq[txq_index] = txq; 1391e948693eSPhilip Paeps esmp = &txq->mem; 1392e948693eSPhilip Paeps 1393e948693eSPhilip Paeps evq = sc->evq[evq_index]; 1394e948693eSPhilip Paeps 1395e948693eSPhilip Paeps /* Allocate and zero DMA space for the descriptor ring. */ 1396385b1d8eSGeorge V. Neville-Neil if ((rc = sfxge_dma_alloc(sc, EFX_TXQ_SIZE(sc->txq_entries), esmp)) != 0) 1397e948693eSPhilip Paeps return (rc); 1398385b1d8eSGeorge V. Neville-Neil (void)memset(esmp->esm_base, 0, EFX_TXQ_SIZE(sc->txq_entries)); 1399e948693eSPhilip Paeps 1400e948693eSPhilip Paeps /* Allocate buffer table entries. */ 1401385b1d8eSGeorge V. Neville-Neil sfxge_sram_buf_tbl_alloc(sc, EFX_TXQ_NBUFS(sc->txq_entries), 1402e948693eSPhilip Paeps &txq->buf_base_id); 1403e948693eSPhilip Paeps 1404e948693eSPhilip Paeps /* Create a DMA tag for packet mappings. */ 1405fb8ccc78SMarius Strobl if (bus_dma_tag_create(sc->parent_dma_tag, 1, 0x1000, 1406fb8ccc78SMarius Strobl MIN(0x3FFFFFFFFFFFUL, BUS_SPACE_MAXADDR), BUS_SPACE_MAXADDR, NULL, 1407fb8ccc78SMarius Strobl NULL, 0x11000, SFXGE_TX_MAPPING_MAX_SEG, 0x1000, 0, NULL, NULL, 1408e948693eSPhilip Paeps &txq->packet_dma_tag) != 0) { 1409e948693eSPhilip Paeps device_printf(sc->dev, "Couldn't allocate txq DMA tag\n"); 1410e948693eSPhilip Paeps rc = ENOMEM; 1411e948693eSPhilip Paeps goto fail; 1412e948693eSPhilip Paeps } 1413e948693eSPhilip Paeps 1414e948693eSPhilip Paeps /* Allocate pending descriptor array for batching writes. */ 1415385b1d8eSGeorge V. Neville-Neil txq->pend_desc = malloc(sizeof(efx_buffer_t) * sc->txq_entries, 1416e948693eSPhilip Paeps M_SFXGE, M_ZERO | M_WAITOK); 1417e948693eSPhilip Paeps 1418e948693eSPhilip Paeps /* Allocate and initialise mbuf DMA mapping array. */ 1419385b1d8eSGeorge V. Neville-Neil txq->stmp = malloc(sizeof(struct sfxge_tx_mapping) * sc->txq_entries, 1420e948693eSPhilip Paeps M_SFXGE, M_ZERO | M_WAITOK); 1421385b1d8eSGeorge V. Neville-Neil for (nmaps = 0; nmaps < sc->txq_entries; nmaps++) { 1422e948693eSPhilip Paeps rc = bus_dmamap_create(txq->packet_dma_tag, 0, 1423e948693eSPhilip Paeps &txq->stmp[nmaps].map); 1424e948693eSPhilip Paeps if (rc != 0) 1425e948693eSPhilip Paeps goto fail2; 1426e948693eSPhilip Paeps } 1427e948693eSPhilip Paeps 1428bc85c897SGeorge V. Neville-Neil snprintf(name, sizeof(name), "%u", txq_index); 1429bc85c897SGeorge V. Neville-Neil txq_node = SYSCTL_ADD_NODE( 1430bc85c897SGeorge V. Neville-Neil device_get_sysctl_ctx(sc->dev), 1431bc85c897SGeorge V. Neville-Neil SYSCTL_CHILDREN(sc->txqs_node), 1432bc85c897SGeorge V. Neville-Neil OID_AUTO, name, CTLFLAG_RD, NULL, ""); 1433bc85c897SGeorge V. Neville-Neil if (txq_node == NULL) { 1434bc85c897SGeorge V. Neville-Neil rc = ENOMEM; 1435bc85c897SGeorge V. Neville-Neil goto fail_txq_node; 1436bc85c897SGeorge V. Neville-Neil } 1437bc85c897SGeorge V. Neville-Neil 1438e948693eSPhilip Paeps if (type == SFXGE_TXQ_IP_TCP_UDP_CKSUM && 1439e948693eSPhilip Paeps (rc = tso_init(txq)) != 0) 1440e948693eSPhilip Paeps goto fail3; 1441e948693eSPhilip Paeps 1442e948693eSPhilip Paeps #ifdef SFXGE_HAVE_MQ 1443060a95efSGeorge V. Neville-Neil if (sfxge_tx_dpl_get_max <= 0) { 1444060a95efSGeorge V. Neville-Neil log(LOG_ERR, "%s=%d must be greater than 0", 1445060a95efSGeorge V. Neville-Neil SFXGE_PARAM_TX_DPL_GET_MAX, sfxge_tx_dpl_get_max); 1446060a95efSGeorge V. Neville-Neil rc = EINVAL; 1447060a95efSGeorge V. Neville-Neil goto fail_tx_dpl_get_max; 1448060a95efSGeorge V. Neville-Neil } 144993929f25SAndrew Rybchenko if (sfxge_tx_dpl_get_non_tcp_max <= 0) { 145093929f25SAndrew Rybchenko log(LOG_ERR, "%s=%d must be greater than 0", 145193929f25SAndrew Rybchenko SFXGE_PARAM_TX_DPL_GET_NON_TCP_MAX, 145293929f25SAndrew Rybchenko sfxge_tx_dpl_get_non_tcp_max); 145393929f25SAndrew Rybchenko rc = EINVAL; 145493929f25SAndrew Rybchenko goto fail_tx_dpl_get_max; 145593929f25SAndrew Rybchenko } 1456060a95efSGeorge V. Neville-Neil if (sfxge_tx_dpl_put_max < 0) { 1457060a95efSGeorge V. Neville-Neil log(LOG_ERR, "%s=%d must be greater or equal to 0", 1458060a95efSGeorge V. Neville-Neil SFXGE_PARAM_TX_DPL_PUT_MAX, sfxge_tx_dpl_put_max); 1459060a95efSGeorge V. Neville-Neil rc = EINVAL; 1460060a95efSGeorge V. Neville-Neil goto fail_tx_dpl_put_max; 1461060a95efSGeorge V. Neville-Neil } 1462060a95efSGeorge V. Neville-Neil 1463e948693eSPhilip Paeps /* Initialize the deferred packet list. */ 1464e948693eSPhilip Paeps stdp = &txq->dpl; 1465060a95efSGeorge V. Neville-Neil stdp->std_put_max = sfxge_tx_dpl_put_max; 1466060a95efSGeorge V. Neville-Neil stdp->std_get_max = sfxge_tx_dpl_get_max; 146793929f25SAndrew Rybchenko stdp->std_get_non_tcp_max = sfxge_tx_dpl_get_non_tcp_max; 1468e948693eSPhilip Paeps stdp->std_getp = &stdp->std_get; 1469e948693eSPhilip Paeps 147033d45dc5SAndrew Rybchenko SFXGE_TXQ_LOCK_INIT(txq, device_get_nameunit(sc->dev), txq_index); 1471bc85c897SGeorge V. Neville-Neil 1472bc85c897SGeorge V. Neville-Neil SYSCTL_ADD_UINT(device_get_sysctl_ctx(sc->dev), 1473bc85c897SGeorge V. Neville-Neil SYSCTL_CHILDREN(txq_node), OID_AUTO, 1474bc85c897SGeorge V. Neville-Neil "dpl_get_count", CTLFLAG_RD | CTLFLAG_STATS, 1475bc85c897SGeorge V. Neville-Neil &stdp->std_get_count, 0, ""); 147693929f25SAndrew Rybchenko SYSCTL_ADD_UINT(device_get_sysctl_ctx(sc->dev), 147793929f25SAndrew Rybchenko SYSCTL_CHILDREN(txq_node), OID_AUTO, 147893929f25SAndrew Rybchenko "dpl_get_non_tcp_count", CTLFLAG_RD | CTLFLAG_STATS, 147993929f25SAndrew Rybchenko &stdp->std_get_non_tcp_count, 0, ""); 148093929f25SAndrew Rybchenko SYSCTL_ADD_UINT(device_get_sysctl_ctx(sc->dev), 148193929f25SAndrew Rybchenko SYSCTL_CHILDREN(txq_node), OID_AUTO, 148293929f25SAndrew Rybchenko "dpl_get_hiwat", CTLFLAG_RD | CTLFLAG_STATS, 148393929f25SAndrew Rybchenko &stdp->std_get_hiwat, 0, ""); 1484e948693eSPhilip Paeps #endif 1485e948693eSPhilip Paeps 1486e948693eSPhilip Paeps txq->type = type; 1487e948693eSPhilip Paeps txq->evq_index = evq_index; 1488e948693eSPhilip Paeps txq->txq_index = txq_index; 1489e948693eSPhilip Paeps txq->init_state = SFXGE_TXQ_INITIALIZED; 1490e948693eSPhilip Paeps 1491e948693eSPhilip Paeps return (0); 1492e948693eSPhilip Paeps 1493060a95efSGeorge V. Neville-Neil fail_tx_dpl_put_max: 1494060a95efSGeorge V. Neville-Neil fail_tx_dpl_get_max: 1495e948693eSPhilip Paeps fail3: 1496bc85c897SGeorge V. Neville-Neil fail_txq_node: 1497e948693eSPhilip Paeps free(txq->pend_desc, M_SFXGE); 1498e948693eSPhilip Paeps fail2: 1499b7b0edd1SGeorge V. Neville-Neil while (nmaps-- != 0) 1500e948693eSPhilip Paeps bus_dmamap_destroy(txq->packet_dma_tag, txq->stmp[nmaps].map); 1501e948693eSPhilip Paeps free(txq->stmp, M_SFXGE); 1502e948693eSPhilip Paeps bus_dma_tag_destroy(txq->packet_dma_tag); 1503e948693eSPhilip Paeps 1504e948693eSPhilip Paeps fail: 1505e948693eSPhilip Paeps sfxge_dma_free(esmp); 1506e948693eSPhilip Paeps 1507e948693eSPhilip Paeps return (rc); 1508e948693eSPhilip Paeps } 1509e948693eSPhilip Paeps 1510e948693eSPhilip Paeps static const struct { 1511e948693eSPhilip Paeps const char *name; 1512e948693eSPhilip Paeps size_t offset; 1513e948693eSPhilip Paeps } sfxge_tx_stats[] = { 1514e948693eSPhilip Paeps #define SFXGE_TX_STAT(name, member) \ 1515e948693eSPhilip Paeps { #name, offsetof(struct sfxge_txq, member) } 1516e948693eSPhilip Paeps SFXGE_TX_STAT(tso_bursts, tso_bursts), 1517e948693eSPhilip Paeps SFXGE_TX_STAT(tso_packets, tso_packets), 1518e948693eSPhilip Paeps SFXGE_TX_STAT(tso_long_headers, tso_long_headers), 1519e1a3d10eSAndrew Rybchenko SFXGE_TX_STAT(tso_pdrop_too_many, tso_pdrop_too_many), 1520e1a3d10eSAndrew Rybchenko SFXGE_TX_STAT(tso_pdrop_no_rsrc, tso_pdrop_no_rsrc), 1521e948693eSPhilip Paeps SFXGE_TX_STAT(tx_collapses, collapses), 1522e948693eSPhilip Paeps SFXGE_TX_STAT(tx_drops, drops), 152393929f25SAndrew Rybchenko SFXGE_TX_STAT(tx_get_overflow, get_overflow), 152493929f25SAndrew Rybchenko SFXGE_TX_STAT(tx_get_non_tcp_overflow, get_non_tcp_overflow), 152593929f25SAndrew Rybchenko SFXGE_TX_STAT(tx_put_overflow, put_overflow), 152693929f25SAndrew Rybchenko SFXGE_TX_STAT(tx_netdown_drops, netdown_drops), 1527e948693eSPhilip Paeps }; 1528e948693eSPhilip Paeps 1529e948693eSPhilip Paeps static int 1530e948693eSPhilip Paeps sfxge_tx_stat_handler(SYSCTL_HANDLER_ARGS) 1531e948693eSPhilip Paeps { 1532e948693eSPhilip Paeps struct sfxge_softc *sc = arg1; 1533e948693eSPhilip Paeps unsigned int id = arg2; 1534e948693eSPhilip Paeps unsigned long sum; 1535e948693eSPhilip Paeps unsigned int index; 1536e948693eSPhilip Paeps 1537e948693eSPhilip Paeps /* Sum across all TX queues */ 1538e948693eSPhilip Paeps sum = 0; 1539e948693eSPhilip Paeps for (index = 0; 1540e948693eSPhilip Paeps index < SFXGE_TXQ_IP_TCP_UDP_CKSUM + SFXGE_TX_SCALE(sc); 1541e948693eSPhilip Paeps index++) 1542e948693eSPhilip Paeps sum += *(unsigned long *)((caddr_t)sc->txq[index] + 1543e948693eSPhilip Paeps sfxge_tx_stats[id].offset); 1544e948693eSPhilip Paeps 1545b7b0edd1SGeorge V. Neville-Neil return (SYSCTL_OUT(req, &sum, sizeof(sum))); 1546e948693eSPhilip Paeps } 1547e948693eSPhilip Paeps 1548e948693eSPhilip Paeps static void 1549e948693eSPhilip Paeps sfxge_tx_stat_init(struct sfxge_softc *sc) 1550e948693eSPhilip Paeps { 1551e948693eSPhilip Paeps struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->dev); 1552e948693eSPhilip Paeps struct sysctl_oid_list *stat_list; 1553e948693eSPhilip Paeps unsigned int id; 1554e948693eSPhilip Paeps 1555e948693eSPhilip Paeps stat_list = SYSCTL_CHILDREN(sc->stats_node); 1556e948693eSPhilip Paeps 1557e948693eSPhilip Paeps for (id = 0; 1558e948693eSPhilip Paeps id < sizeof(sfxge_tx_stats) / sizeof(sfxge_tx_stats[0]); 1559e948693eSPhilip Paeps id++) { 1560e948693eSPhilip Paeps SYSCTL_ADD_PROC( 1561e948693eSPhilip Paeps ctx, stat_list, 1562e948693eSPhilip Paeps OID_AUTO, sfxge_tx_stats[id].name, 1563e948693eSPhilip Paeps CTLTYPE_ULONG|CTLFLAG_RD, 1564e948693eSPhilip Paeps sc, id, sfxge_tx_stat_handler, "LU", 1565e948693eSPhilip Paeps ""); 1566e948693eSPhilip Paeps } 1567e948693eSPhilip Paeps } 1568e948693eSPhilip Paeps 1569e948693eSPhilip Paeps void 1570e948693eSPhilip Paeps sfxge_tx_fini(struct sfxge_softc *sc) 1571e948693eSPhilip Paeps { 1572e948693eSPhilip Paeps int index; 1573e948693eSPhilip Paeps 1574e948693eSPhilip Paeps index = SFXGE_TX_SCALE(sc); 1575e948693eSPhilip Paeps while (--index >= 0) 1576e948693eSPhilip Paeps sfxge_tx_qfini(sc, SFXGE_TXQ_IP_TCP_UDP_CKSUM + index); 1577e948693eSPhilip Paeps 1578e948693eSPhilip Paeps sfxge_tx_qfini(sc, SFXGE_TXQ_IP_CKSUM); 1579e948693eSPhilip Paeps sfxge_tx_qfini(sc, SFXGE_TXQ_NON_CKSUM); 1580e948693eSPhilip Paeps } 1581e948693eSPhilip Paeps 1582e948693eSPhilip Paeps 1583e948693eSPhilip Paeps int 1584e948693eSPhilip Paeps sfxge_tx_init(struct sfxge_softc *sc) 1585e948693eSPhilip Paeps { 1586e948693eSPhilip Paeps struct sfxge_intr *intr; 1587e948693eSPhilip Paeps int index; 1588e948693eSPhilip Paeps int rc; 1589e948693eSPhilip Paeps 1590e948693eSPhilip Paeps intr = &sc->intr; 1591e948693eSPhilip Paeps 1592e948693eSPhilip Paeps KASSERT(intr->state == SFXGE_INTR_INITIALIZED, 1593e948693eSPhilip Paeps ("intr->state != SFXGE_INTR_INITIALIZED")); 1594e948693eSPhilip Paeps 1595bc85c897SGeorge V. Neville-Neil sc->txqs_node = SYSCTL_ADD_NODE( 1596bc85c897SGeorge V. Neville-Neil device_get_sysctl_ctx(sc->dev), 1597bc85c897SGeorge V. Neville-Neil SYSCTL_CHILDREN(device_get_sysctl_tree(sc->dev)), 1598bc85c897SGeorge V. Neville-Neil OID_AUTO, "txq", CTLFLAG_RD, NULL, "Tx queues"); 1599bc85c897SGeorge V. Neville-Neil if (sc->txqs_node == NULL) { 1600bc85c897SGeorge V. Neville-Neil rc = ENOMEM; 1601bc85c897SGeorge V. Neville-Neil goto fail_txq_node; 1602bc85c897SGeorge V. Neville-Neil } 1603bc85c897SGeorge V. Neville-Neil 1604e948693eSPhilip Paeps /* Initialize the transmit queues */ 1605e948693eSPhilip Paeps if ((rc = sfxge_tx_qinit(sc, SFXGE_TXQ_NON_CKSUM, 1606e948693eSPhilip Paeps SFXGE_TXQ_NON_CKSUM, 0)) != 0) 1607e948693eSPhilip Paeps goto fail; 1608e948693eSPhilip Paeps 1609e948693eSPhilip Paeps if ((rc = sfxge_tx_qinit(sc, SFXGE_TXQ_IP_CKSUM, 1610e948693eSPhilip Paeps SFXGE_TXQ_IP_CKSUM, 0)) != 0) 1611e948693eSPhilip Paeps goto fail2; 1612e948693eSPhilip Paeps 1613e948693eSPhilip Paeps for (index = 0; index < SFXGE_TX_SCALE(sc); index++) { 1614e948693eSPhilip Paeps if ((rc = sfxge_tx_qinit(sc, SFXGE_TXQ_IP_TCP_UDP_CKSUM + index, 1615e948693eSPhilip Paeps SFXGE_TXQ_IP_TCP_UDP_CKSUM, index)) != 0) 1616e948693eSPhilip Paeps goto fail3; 1617e948693eSPhilip Paeps } 1618e948693eSPhilip Paeps 1619e948693eSPhilip Paeps sfxge_tx_stat_init(sc); 1620e948693eSPhilip Paeps 1621e948693eSPhilip Paeps return (0); 1622e948693eSPhilip Paeps 1623e948693eSPhilip Paeps fail3: 1624e948693eSPhilip Paeps sfxge_tx_qfini(sc, SFXGE_TXQ_IP_CKSUM); 1625e948693eSPhilip Paeps 1626e948693eSPhilip Paeps while (--index >= 0) 1627e948693eSPhilip Paeps sfxge_tx_qfini(sc, SFXGE_TXQ_IP_TCP_UDP_CKSUM + index); 1628e948693eSPhilip Paeps 1629e948693eSPhilip Paeps fail2: 1630e948693eSPhilip Paeps sfxge_tx_qfini(sc, SFXGE_TXQ_NON_CKSUM); 1631e948693eSPhilip Paeps 1632e948693eSPhilip Paeps fail: 1633bc85c897SGeorge V. Neville-Neil fail_txq_node: 1634e948693eSPhilip Paeps return (rc); 1635e948693eSPhilip Paeps } 1636