| if_ixl_netmap.h (279232) | if_ixl_netmap.h (285349) |
|---|---|
| 1/* 2 * Copyright (C) 2015, 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/* | 1/* 2 * Copyright (C) 2015, 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_ixl_netmap.h 279232 2015-02-24 06:20:50Z luigi $ | 27 * $FreeBSD: head/sys/dev/netmap/if_ixl_netmap.h 285349 2015-07-10 05:51:36Z luigi $ |
| 28 * 29 * netmap support for: ixl 30 * 31 * derived from ixgbe 32 * netmap support for a network driver. 33 * This file contains code but only static or inline functions used 34 * by a single driver. To avoid replication of code we just #include 35 * it near the beginning of the standard driver. --- 27 unchanged lines hidden (view full) --- 63 * During regular operations the CRC is stripped, but on some 64 * hardware reception of frames not multiple of 64 is slower, 65 * so using crcstrip=0 helps in benchmarks. 66 * 67 * ixl_rx_miss, ixl_rx_miss_bufs: 68 * count packets that might be missed due to lost interrupts. 69 */ 70SYSCTL_DECL(_dev_netmap); | 28 * 29 * netmap support for: ixl 30 * 31 * derived from ixgbe 32 * netmap support for a network driver. 33 * This file contains code but only static or inline functions used 34 * by a single driver. To avoid replication of code we just #include 35 * it near the beginning of the standard driver. --- 27 unchanged lines hidden (view full) --- 63 * During regular operations the CRC is stripped, but on some 64 * hardware reception of frames not multiple of 64 is slower, 65 * so using crcstrip=0 helps in benchmarks. 66 * 67 * ixl_rx_miss, ixl_rx_miss_bufs: 68 * count packets that might be missed due to lost interrupts. 69 */ 70SYSCTL_DECL(_dev_netmap); |
| 71int ixl_rx_miss, ixl_rx_miss_bufs, ixl_crcstrip; | 71/* 72 * The xl driver by default strips CRCs and we do not override it. 73 */ 74int ixl_rx_miss, ixl_rx_miss_bufs, ixl_crcstrip = 1; 75#if 0 |
| 72SYSCTL_INT(_dev_netmap, OID_AUTO, ixl_crcstrip, | 76SYSCTL_INT(_dev_netmap, OID_AUTO, ixl_crcstrip, |
| 73 CTLFLAG_RW, &ixl_crcstrip, 0, "strip CRC on rx frames"); | 77 CTLFLAG_RW, &ixl_crcstrip, 1, "strip CRC on rx frames"); 78#endif |
| 74SYSCTL_INT(_dev_netmap, OID_AUTO, ixl_rx_miss, 75 CTLFLAG_RW, &ixl_rx_miss, 0, "potentially missed rx intr"); 76SYSCTL_INT(_dev_netmap, OID_AUTO, ixl_rx_miss_bufs, 77 CTLFLAG_RW, &ixl_rx_miss_bufs, 0, "potentially missed rx intr bufs"); 78 79 80/* 81 * Register/unregister. We are already under netmap lock. --- 181 unchanged lines hidden (view full) --- 263 */ 264 nic_i = LE32_TO_CPU(*(volatile __le32 *)&txr->base[que->num_desc]); 265 if (nic_i != txr->next_to_clean) { 266 /* some tx completed, increment avail */ 267 txr->next_to_clean = nic_i; 268 kring->nr_hwtail = nm_prev(netmap_idx_n2k(kring, nic_i), lim); 269 } 270 | 79SYSCTL_INT(_dev_netmap, OID_AUTO, ixl_rx_miss, 80 CTLFLAG_RW, &ixl_rx_miss, 0, "potentially missed rx intr"); 81SYSCTL_INT(_dev_netmap, OID_AUTO, ixl_rx_miss_bufs, 82 CTLFLAG_RW, &ixl_rx_miss_bufs, 0, "potentially missed rx intr bufs"); 83 84 85/* 86 * Register/unregister. We are already under netmap lock. --- 181 unchanged lines hidden (view full) --- 268 */ 269 nic_i = LE32_TO_CPU(*(volatile __le32 *)&txr->base[que->num_desc]); 270 if (nic_i != txr->next_to_clean) { 271 /* some tx completed, increment avail */ 272 txr->next_to_clean = nic_i; 273 kring->nr_hwtail = nm_prev(netmap_idx_n2k(kring, nic_i), lim); 274 } 275 |
| 271 nm_txsync_finalize(kring); 272 | |
| 273 return 0; 274} 275 276 277/* 278 * Reconcile kernel and user view of the receive ring. 279 * Same as for the txsync, this routine must be efficient. 280 * The caller guarantees a single invocations, but races against --- 11 unchanged lines hidden (view full) --- 292{ 293 struct netmap_adapter *na = kring->na; 294 struct ifnet *ifp = na->ifp; 295 struct netmap_ring *ring = kring->ring; 296 u_int nm_i; /* index into the netmap ring */ 297 u_int nic_i; /* index into the NIC ring */ 298 u_int n; 299 u_int const lim = kring->nkr_num_slots - 1; | 276 return 0; 277} 278 279 280/* 281 * Reconcile kernel and user view of the receive ring. 282 * Same as for the txsync, this routine must be efficient. 283 * The caller guarantees a single invocations, but races against --- 11 unchanged lines hidden (view full) --- 295{ 296 struct netmap_adapter *na = kring->na; 297 struct ifnet *ifp = na->ifp; 298 struct netmap_ring *ring = kring->ring; 299 u_int nm_i; /* index into the netmap ring */ 300 u_int nic_i; /* index into the NIC ring */ 301 u_int n; 302 u_int const lim = kring->nkr_num_slots - 1; |
| 300 u_int const head = nm_rxsync_prologue(kring); | 303 u_int const head = kring->rhead; |
| 301 int force_update = (flags & NAF_FORCE_READ) || kring->nr_kflags & NKR_PENDINTR; 302 303 /* device-specific */ 304 struct ixl_vsi *vsi = ifp->if_softc; 305 struct ixl_queue *que = &vsi->queues[kring->ring_id]; 306 struct rx_ring *rxr = &que->rxr; 307 308 if (head > lim) --- 94 unchanged lines hidden (view full) --- 403 /* 404 * IMPORTANT: we must leave one free slot in the ring, 405 * so move nic_i back by one unit 406 */ 407 nic_i = nm_prev(nic_i, lim); 408 wr32(vsi->hw, rxr->tail, nic_i); 409 } 410 | 304 int force_update = (flags & NAF_FORCE_READ) || kring->nr_kflags & NKR_PENDINTR; 305 306 /* device-specific */ 307 struct ixl_vsi *vsi = ifp->if_softc; 308 struct ixl_queue *que = &vsi->queues[kring->ring_id]; 309 struct rx_ring *rxr = &que->rxr; 310 311 if (head > lim) --- 94 unchanged lines hidden (view full) --- 406 /* 407 * IMPORTANT: we must leave one free slot in the ring, 408 * so move nic_i back by one unit 409 */ 410 nic_i = nm_prev(nic_i, lim); 411 wr32(vsi->hw, rxr->tail, nic_i); 412 } 413 |
| 411 /* tell userspace that there might be new packets */ 412 nm_rxsync_finalize(kring); 413 | |
| 414 return 0; 415 416ring_reset: 417 return netmap_ring_reinit(kring); 418} 419 420#endif /* !NETMAP_IXL_MAIN */ 421 422/* end of file */ | 414 return 0; 415 416ring_reset: 417 return netmap_ring_reinit(kring); 418} 419 420#endif /* !NETMAP_IXL_MAIN */ 421 422/* end of file */ |