| sfxge_tx.c (279094) | sfxge_tx.c (279141) |
|---|---|
| 1/*- 2 * Copyright (c) 2010-2011 Solarflare Communications, Inc. 3 * All rights reserved. 4 * 5 * This software was developed in part by Philip Paeps under contract for 6 * Solarflare Communications, Inc. 7 * 8 * Redistribution and use in source and binary forms, with or without --- 29 unchanged lines hidden (view full) --- 38 * 39 * So, event queue plus label mapping to Tx queue index is: 40 * if event queue index is 0, TxQ-index = TxQ-label * [0..SFXGE_TXQ_NTYPES) 41 * else TxQ-index = SFXGE_TXQ_NTYPES + EvQ-index - 1 42 * See sfxge_get_txq_by_label() sfxge_ev.c 43 */ 44 45#include <sys/cdefs.h> | 1/*- 2 * Copyright (c) 2010-2011 Solarflare Communications, Inc. 3 * All rights reserved. 4 * 5 * This software was developed in part by Philip Paeps under contract for 6 * Solarflare Communications, Inc. 7 * 8 * Redistribution and use in source and binary forms, with or without --- 29 unchanged lines hidden (view full) --- 38 * 39 * So, event queue plus label mapping to Tx queue index is: 40 * if event queue index is 0, TxQ-index = TxQ-label * [0..SFXGE_TXQ_NTYPES) 41 * else TxQ-index = SFXGE_TXQ_NTYPES + EvQ-index - 1 42 * See sfxge_get_txq_by_label() sfxge_ev.c 43 */ 44 45#include <sys/cdefs.h> |
| 46__FBSDID("$FreeBSD: head/sys/dev/sfxge/sfxge_tx.c 279094 2015-02-21 06:24:48Z arybchik $"); | 46__FBSDID("$FreeBSD: head/sys/dev/sfxge/sfxge_tx.c 279141 2015-02-22 07:08:57Z arybchik $"); |
| 47 48#include <sys/types.h> 49#include <sys/mbuf.h> 50#include <sys/smp.h> 51#include <sys/socket.h> 52#include <sys/sysctl.h> 53#include <sys/syslog.h> 54 --- 445 unchanged lines hidden (view full) --- 500 501/* 502 * Put a packet on the deferred packet list. 503 * 504 * If we are called with the txq lock held, we put the packet on the "get 505 * list", otherwise we atomically push it on the "put list". The swizzle 506 * function takes care of ordering. 507 * | 47 48#include <sys/types.h> 49#include <sys/mbuf.h> 50#include <sys/smp.h> 51#include <sys/socket.h> 52#include <sys/sysctl.h> 53#include <sys/syslog.h> 54 --- 445 unchanged lines hidden (view full) --- 500 501/* 502 * Put a packet on the deferred packet list. 503 * 504 * If we are called with the txq lock held, we put the packet on the "get 505 * list", otherwise we atomically push it on the "put list". The swizzle 506 * function takes care of ordering. 507 * |
| 508 * The length of the put list is bounded by SFXGE_TX_MAX_DEFFERED. We | 508 * The length of the put list is bounded by SFXGE_TX_MAX_DEFERRED. We |
| 509 * overload the csum_data field in the mbuf to keep track of this length 510 * because there is no cheap alternative to avoid races. 511 */ 512static int 513sfxge_tx_qdpl_put(struct sfxge_txq *txq, struct mbuf *mbuf, int locked) 514{ 515 struct sfxge_tx_dpl *stdp; 516 --- 47 unchanged lines hidden (view full) --- 564 } while (atomic_cmpset_ptr(putp, old, new) == 0); 565 } 566 567 return (0); 568} 569 570/* 571 * Called from if_transmit - will try to grab the txq lock and enqueue to the | 509 * overload the csum_data field in the mbuf to keep track of this length 510 * because there is no cheap alternative to avoid races. 511 */ 512static int 513sfxge_tx_qdpl_put(struct sfxge_txq *txq, struct mbuf *mbuf, int locked) 514{ 515 struct sfxge_tx_dpl *stdp; 516 --- 47 unchanged lines hidden (view full) --- 564 } while (atomic_cmpset_ptr(putp, old, new) == 0); 565 } 566 567 return (0); 568} 569 570/* 571 * Called from if_transmit - will try to grab the txq lock and enqueue to the |
| 572 * put list if it succeeds, otherwise will push onto the defer list. | 572 * put list if it succeeds, otherwise try to push onto the defer list if space. |
| 573 */ 574int 575sfxge_tx_packet_add(struct sfxge_txq *txq, struct mbuf *m) 576{ 577 int locked; 578 int rc; 579 580 if (!SFXGE_LINK_UP(txq->sc)) { --- 1058 unchanged lines hidden --- | 573 */ 574int 575sfxge_tx_packet_add(struct sfxge_txq *txq, struct mbuf *m) 576{ 577 int locked; 578 int rc; 579 580 if (!SFXGE_LINK_UP(txq->sc)) { --- 1058 unchanged lines hidden --- |