4f00516ac6
Tx flush done event is defined and Rx-specific header is not a good place for it. Sponsored by: Solarflare Communications, Inc. MFC after: 2 days
194 lines
6.2 KiB
C
194 lines
6.2 KiB
C
/*-
|
|
* Copyright (c) 2010-2016 Solarflare Communications Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This software was developed in part by Philip Paeps under contract for
|
|
* Solarflare Communications, Inc.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright notice,
|
|
* this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright notice,
|
|
* this list of conditions and the following disclaimer in the documentation
|
|
* and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
|
|
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
|
|
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
|
|
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
|
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
|
|
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
|
|
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
|
|
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
|
|
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
* The views and conclusions contained in the software and documentation are
|
|
* those of the authors and should not be interpreted as representing official
|
|
* policies, either expressed or implied, of the FreeBSD Project.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef _SFXGE_RX_H
|
|
#define _SFXGE_RX_H
|
|
|
|
#include "opt_inet.h"
|
|
#include "opt_inet6.h"
|
|
|
|
#if defined(INET) || defined(INET6)
|
|
#define SFXGE_LRO 1
|
|
#endif
|
|
|
|
#define SFXGE_RX_SCALE_MAX EFX_MAXRSS
|
|
|
|
struct sfxge_rx_sw_desc {
|
|
struct mbuf *mbuf;
|
|
bus_dmamap_t map;
|
|
int flags;
|
|
int size;
|
|
};
|
|
|
|
#ifdef SFXGE_LRO
|
|
|
|
/**
|
|
* struct sfxge_lro_conn - Connection state for software LRO
|
|
* @link: Link for hash table and free list.
|
|
* @active_link: Link for active_conns list
|
|
* @l2_id: Identifying information from layer 2
|
|
* @conn_hash: Hash of connection 4-tuple
|
|
* @nh: IP (v4 or v6) header of super-packet
|
|
* @source: Source TCP port number
|
|
* @dest: Destination TCP port number
|
|
* @n_in_order_pkts: Number of in-order packets with payload.
|
|
* @next_seq: Next in-order sequence number.
|
|
* @last_pkt_ticks: Time we last saw a packet on this connection.
|
|
* @mbuf: The mbuf we are currently holding.
|
|
* If %NULL, then all following fields are undefined.
|
|
* @mbuf_tail: The tail of the frag_list of mbufs we're holding.
|
|
* Only valid after at least one merge.
|
|
* @th_last: The TCP header of the last packet merged.
|
|
* @next_buf: The next RX buffer to process.
|
|
* @next_eh: Ethernet header of the next buffer.
|
|
* @next_nh: IP header of the next buffer.
|
|
* @delivered: True if we've delivered a payload packet up this interrupt.
|
|
*/
|
|
struct sfxge_lro_conn {
|
|
TAILQ_ENTRY(sfxge_lro_conn) link;
|
|
LIST_ENTRY(sfxge_lro_conn) active_link;
|
|
uint16_t l2_id;
|
|
uint32_t conn_hash;
|
|
void *nh;
|
|
uint16_t source, dest;
|
|
int n_in_order_pkts;
|
|
unsigned next_seq;
|
|
unsigned last_pkt_ticks;
|
|
struct mbuf *mbuf;
|
|
struct mbuf *mbuf_tail;
|
|
struct tcphdr *th_last;
|
|
struct sfxge_rx_sw_desc next_buf;
|
|
void *next_eh;
|
|
void *next_nh;
|
|
int delivered;
|
|
};
|
|
|
|
/**
|
|
* struct sfxge_lro_state - Port state for software LRO
|
|
* @sc: The associated NIC.
|
|
* @conns_mask: Number of hash buckets - 1.
|
|
* @conns: Hash buckets for tracked connections.
|
|
* @conns_n: Length of linked list for each hash bucket.
|
|
* @active_conns: Connections that are holding a packet.
|
|
* Connections are self-linked when not in this list.
|
|
* @free_conns: Free sfxge_lro_conn instances.
|
|
* @last_purge_ticks: The value of ticks last time we purged idle
|
|
* connections.
|
|
* @n_merges: Number of packets absorbed by LRO.
|
|
* @n_bursts: Number of bursts spotted by LRO.
|
|
* @n_slow_start: Number of packets not merged because connection may be in
|
|
* slow-start.
|
|
* @n_misorder: Number of out-of-order packets seen in tracked streams.
|
|
* @n_too_many: Incremented when we're trying to track too many streams.
|
|
* @n_new_stream: Number of distinct streams we've tracked.
|
|
* @n_drop_idle: Number of streams discarded because they went idle.
|
|
* @n_drop_closed: Number of streams that have seen a FIN or RST.
|
|
*/
|
|
struct sfxge_lro_state {
|
|
struct sfxge_softc *sc;
|
|
unsigned conns_mask;
|
|
TAILQ_HEAD(sfxge_lro_tailq, sfxge_lro_conn) *conns;
|
|
unsigned *conns_n;
|
|
LIST_HEAD(, sfxge_lro_conn) active_conns;
|
|
TAILQ_HEAD(, sfxge_lro_conn) free_conns;
|
|
unsigned last_purge_ticks;
|
|
unsigned n_merges;
|
|
unsigned n_bursts;
|
|
unsigned n_slow_start;
|
|
unsigned n_misorder;
|
|
unsigned n_too_many;
|
|
unsigned n_new_stream;
|
|
unsigned n_drop_idle;
|
|
unsigned n_drop_closed;
|
|
};
|
|
|
|
#endif /* SFXGE_LRO */
|
|
|
|
enum sfxge_flush_state {
|
|
SFXGE_FLUSH_DONE = 0,
|
|
SFXGE_FLUSH_REQUIRED,
|
|
SFXGE_FLUSH_PENDING,
|
|
SFXGE_FLUSH_FAILED
|
|
};
|
|
|
|
enum sfxge_rxq_state {
|
|
SFXGE_RXQ_UNINITIALIZED = 0,
|
|
SFXGE_RXQ_INITIALIZED,
|
|
SFXGE_RXQ_STARTED
|
|
};
|
|
|
|
#define SFXGE_RX_BATCH 128
|
|
|
|
struct sfxge_rxq {
|
|
struct sfxge_softc *sc __aligned(CACHE_LINE_SIZE);
|
|
unsigned int index;
|
|
efsys_mem_t mem;
|
|
unsigned int buf_base_id;
|
|
enum sfxge_rxq_state init_state;
|
|
unsigned int entries;
|
|
unsigned int ptr_mask;
|
|
|
|
struct sfxge_rx_sw_desc *queue __aligned(CACHE_LINE_SIZE);
|
|
unsigned int added;
|
|
unsigned int pushed;
|
|
unsigned int pending;
|
|
unsigned int completed;
|
|
unsigned int loopback;
|
|
#ifdef SFXGE_LRO
|
|
struct sfxge_lro_state lro;
|
|
#endif
|
|
unsigned int refill_threshold;
|
|
struct callout refill_callout;
|
|
unsigned int refill_delay;
|
|
|
|
efx_rxq_t *common __aligned(CACHE_LINE_SIZE);
|
|
volatile enum sfxge_flush_state flush_state;
|
|
};
|
|
|
|
/*
|
|
* From sfxge_rx.c.
|
|
*/
|
|
extern int sfxge_rx_init(struct sfxge_softc *sc);
|
|
extern void sfxge_rx_fini(struct sfxge_softc *sc);
|
|
extern int sfxge_rx_start(struct sfxge_softc *sc);
|
|
extern void sfxge_rx_stop(struct sfxge_softc *sc);
|
|
extern void sfxge_rx_qcomplete(struct sfxge_rxq *rxq, boolean_t eop);
|
|
extern void sfxge_rx_qrefill(struct sfxge_rxq *rxq);
|
|
extern void sfxge_rx_qflush_done(struct sfxge_rxq *rxq);
|
|
extern void sfxge_rx_qflush_failed(struct sfxge_rxq *rxq);
|
|
extern void sfxge_rx_scale_update(void *arg, int npending);
|
|
|
|
#endif
|