1/* 2 * Copyright (C) 2011-2014 Luigi Rizzo. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. --- 10 unchanged lines hidden (view full) --- 19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23 * SUCH DAMAGE. 24 */ 25 26/* |
27 * $FreeBSD: head/sys/dev/netmap/if_re_netmap.h 270063 2014-08-16 15:00:01Z luigi $ |
28 * 29 * netmap support for: re 30 * 31 * For more details on netmap support please see ixgbe_netmap.h 32 */ 33 34 35#include <net/netmap.h> --- 24 unchanged lines hidden (view full) --- 60 return (ifp->if_drv_flags & IFF_DRV_RUNNING ? 0 : 1); 61} 62 63 64/* 65 * Reconcile kernel and user view of the transmit ring. 66 */ 67static int |
68re_netmap_txsync(struct netmap_kring *kring, int flags) |
69{ |
70 struct netmap_adapter *na = kring->na; |
71 struct ifnet *ifp = na->ifp; |
72 struct netmap_ring *ring = kring->ring; 73 u_int nm_i; /* index into the netmap ring */ 74 u_int nic_i; /* index into the NIC ring */ 75 u_int n; 76 u_int const lim = kring->nkr_num_slots - 1; 77 u_int const head = kring->rhead; 78 79 /* device-specific */ --- 11 unchanged lines hidden (view full) --- 91 if (nm_i != head) { /* we have new packets to send */ 92 nic_i = sc->rl_ldata.rl_tx_prodidx; 93 // XXX or netmap_idx_k2n(kring, nm_i); 94 95 for (n = 0; nm_i != head; n++) { 96 struct netmap_slot *slot = &ring->slot[nm_i]; 97 u_int len = slot->len; 98 uint64_t paddr; |
99 void *addr = PNMB(na, slot, &paddr); |
100 101 /* device-specific */ 102 struct rl_desc *desc = &sc->rl_ldata.rl_tx_list[nic_i]; 103 int cmd = slot->len | RL_TDESC_CMD_EOF | 104 RL_TDESC_CMD_OWN | RL_TDESC_CMD_SOF ; 105 |
106 NM_CHECK_ADDR_LEN(na, addr, len); |
107 108 if (nic_i == lim) /* mark end of ring */ 109 cmd |= RL_TDESC_CMD_EOR; 110 111 if (slot->flags & NS_BUF_CHANGED) { 112 /* buffer has changed, reload map */ 113 desc->rl_bufaddr_lo = htole32(RL_ADDR_LO(paddr)); 114 desc->rl_bufaddr_hi = htole32(RL_ADDR_HI(paddr)); |
115 netmap_reload_map(na, sc->rl_ldata.rl_tx_mtag, |
116 txd[nic_i].tx_dmamap, addr); 117 } 118 slot->flags &= ~(NS_REPORT | NS_BUF_CHANGED); 119 120 /* Fill the slot in the NIC ring. */ 121 desc->rl_cmdstat = htole32(cmd); 122 123 /* make sure changes to the buffer are synced */ --- 40 unchanged lines hidden (view full) --- 164 return 0; 165} 166 167 168/* 169 * Reconcile kernel and user view of the receive ring. 170 */ 171static int |
172re_netmap_rxsync(struct netmap_kring *kring, int flags) |
173{ |
174 struct netmap_adapter *na = kring->na; |
175 struct ifnet *ifp = na->ifp; |
176 struct netmap_ring *ring = kring->ring; 177 u_int nm_i; /* index into the netmap ring */ 178 u_int nic_i; /* index into the NIC ring */ 179 u_int n; 180 u_int const lim = kring->nkr_num_slots - 1; 181 u_int const head = nm_rxsync_prologue(kring); 182 int force_update = (flags & NAF_FORCE_READ) || kring->nr_kflags & NKR_PENDINTR; 183 --- 51 unchanged lines hidden (view full) --- 235 * Second part: skip past packets that userspace has released. 236 */ 237 nm_i = kring->nr_hwcur; 238 if (nm_i != head) { 239 nic_i = netmap_idx_k2n(kring, nm_i); 240 for (n = 0; nm_i != head; n++) { 241 struct netmap_slot *slot = &ring->slot[nm_i]; 242 uint64_t paddr; |
243 void *addr = PNMB(na, slot, &paddr); |
244 245 struct rl_desc *desc = &sc->rl_ldata.rl_rx_list[nic_i]; |
246 int cmd = NETMAP_BUF_SIZE(na) | RL_RDESC_CMD_OWN; |
247 |
248 if (addr == NETMAP_BUF_BASE(na)) /* bad buf */ |
249 goto ring_reset; 250 251 if (nic_i == lim) /* mark end of ring */ 252 cmd |= RL_RDESC_CMD_EOR; 253 254 if (slot->flags & NS_BUF_CHANGED) { 255 /* buffer has changed, reload map */ 256 desc->rl_bufaddr_lo = htole32(RL_ADDR_LO(paddr)); 257 desc->rl_bufaddr_hi = htole32(RL_ADDR_HI(paddr)); |
258 netmap_reload_map(na, sc->rl_ldata.rl_rx_mtag, |
259 rxd[nic_i].rx_dmamap, addr); 260 slot->flags &= ~NS_BUF_CHANGED; 261 } 262 desc->rl_cmdstat = htole32(cmd); 263 bus_dmamap_sync(sc->rl_ldata.rl_rx_mtag, 264 rxd[nic_i].rx_dmamap, 265 BUS_DMASYNC_PREREAD); 266 nm_i = nm_next(nm_i, lim); --- 24 unchanged lines hidden (view full) --- 291re_netmap_tx_init(struct rl_softc *sc) 292{ 293 struct rl_txdesc *txd; 294 struct rl_desc *desc; 295 int i, n; 296 struct netmap_adapter *na = NA(sc->rl_ifp); 297 struct netmap_slot *slot; 298 |
299 slot = netmap_reset(na, NR_TX, 0, 0); |
300 /* slot is NULL if we are not in native netmap mode */ |
301 if (!slot) |
302 return; |
303 /* in netmap mode, overwrite addresses and maps */ 304 txd = sc->rl_ldata.rl_tx_desc; 305 desc = sc->rl_ldata.rl_tx_list; 306 n = sc->rl_ldata.rl_tx_desc_cnt; 307 308 /* l points in the netmap ring, i points in the NIC ring */ 309 for (i = 0; i < n; i++) { 310 uint64_t paddr; 311 int l = netmap_idx_n2k(&na->tx_rings[0], i); |
312 void *addr = PNMB(na, slot + l, &paddr); |
313 314 desc[i].rl_bufaddr_lo = htole32(RL_ADDR_LO(paddr)); 315 desc[i].rl_bufaddr_hi = htole32(RL_ADDR_HI(paddr)); |
316 netmap_load_map(na, sc->rl_ldata.rl_tx_mtag, |
317 txd[i].tx_dmamap, addr); 318 } 319} 320 321static void 322re_netmap_rx_init(struct rl_softc *sc) 323{ 324 struct netmap_adapter *na = NA(sc->rl_ifp); --- 10 unchanged lines hidden (view full) --- 335 * and also keep one empty. 336 */ 337 max_avail = n - 1 - nm_kr_rxspace(&na->rx_rings[0]); 338 for (nic_i = 0; nic_i < n; nic_i++) { 339 void *addr; 340 uint64_t paddr; 341 uint32_t nm_i = netmap_idx_n2k(&na->rx_rings[0], nic_i); 342 |
343 addr = PNMB(na, slot + nm_i, &paddr); |
344 |
345 netmap_reload_map(na, sc->rl_ldata.rl_rx_mtag, |
346 sc->rl_ldata.rl_rx_desc[nic_i].rx_dmamap, addr); 347 bus_dmamap_sync(sc->rl_ldata.rl_rx_mtag, 348 sc->rl_ldata.rl_rx_desc[nic_i].rx_dmamap, BUS_DMASYNC_PREREAD); 349 desc[nic_i].rl_bufaddr_lo = htole32(RL_ADDR_LO(paddr)); 350 desc[nic_i].rl_bufaddr_hi = htole32(RL_ADDR_HI(paddr)); |
351 cmdstat = NETMAP_BUF_SIZE(na); |
352 if (nic_i == n - 1) /* mark the end of ring */ 353 cmdstat |= RL_RDESC_CMD_EOR; 354 if (nic_i < max_avail) 355 cmdstat |= RL_RDESC_CMD_OWN; 356 desc[nic_i].rl_cmdstat = htole32(cmdstat); 357 } 358} 359 --- 20 unchanged lines hidden --- |