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Fix(lwip):bugfix for add config for tcp ooseq bufs

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This commit is contained in:
xueyunfei 2023-08-14 17:54:13 +08:00 committed by David Cermak
parent ffddf278f5
commit 083eb06028
2 changed files with 52 additions and 3 deletions
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40
components/lwip/Kconfig
View File

@ -543,7 +543,7 @@ menu "LWIP"
Can be set lower to save RAM, the default value 1460(ipv4)/1440(ipv6) will give best throughput.
IPv4 TCP_MSS Range: 576 <= TCP_MSS <= 1460
IPv6 TCP_MSS Range: 1220<= TCP_mSS <= 1440
IPv6 TCP_MSS Range: 1220<= TCP_MSS <= 1440
config LWIP_TCP_TMR_INTERVAL
int "TCP timer interval(ms)"
@ -568,7 +568,7 @@ menu "LWIP"
config LWIP_TCP_SND_BUF_DEFAULT
int "Default send buffer size"
default 5744 # 4 * default MSS
default 5760 # 4 * default MSS
range 2440 65535 if !LWIP_WND_SCALE
range 2440 1024000 if LWIP_WND_SCALE
help
@ -585,7 +585,7 @@ menu "LWIP"
config LWIP_TCP_WND_DEFAULT
int "Default receive window size"
default 5744 # 4 * default MSS
default 5760 # 4 * default MSS
range 2440 65535 if !LWIP_WND_SCALE
range 2440 1024000 if LWIP_WND_SCALE
help
@ -627,6 +627,40 @@ menu "LWIP"
Disable this option to save some RAM during TCP sessions, at the expense
of increased retransmissions if segments arrive out of order.
config LWIP_TCP_OOSEQ_TIMEOUT
int "Timeout for each pbuf queued in TCP OOSEQ, in RTOs."
depends on LWIP_TCP_QUEUE_OOSEQ
range 1 30
default 6
help
The timeout value is TCP_OOSEQ_TIMEOUT * RTO.
config LWIP_TCP_OOSEQ_MAX_PBUFS
int "The maximum number of pbufs queued on OOSEQ per pcb"
depends on LWIP_TCP_QUEUE_OOSEQ
range 0 12
default 4
help
If LWIP_TCP_OOSEQ_MAX_PBUFS = 0, TCP will not control the number of OOSEQ pbufs.
In a poor network environment, many out-of-order tcp pbufs will be received.
These out-of-order pbufs will be cached in the TCP out-of-order queue which will
cause Wi-Fi/Ethernet fail to release RX buffer in time.
It is possible that all RX buffers for MAC layer are used by OOSEQ.
Control the number of out-of-order pbufs to ensure that the MAC layer has enough RX buffer
to receive packets.
In the Wi-Fi scenario, recommended OOSEQ PBUFS Range:
0 <= TCP_OOSEQ_MAX_PBUFS <= CONFIG_ESP_WIFI_DYNAMIC_RX_BUFFER_NUM/(MAX_TCP_NUMBER + 1)
In the Ethernet scenario,recommended Ethernet OOSEQ PBUFS Range:
0 <= TCP_OOSEQ_MAX_PBUFS <= CONFIG_ETH_DMA_RX_BUFFER_NUM/(MAX_TCP_NUMBER + 1)
Within the recommended value range, the larger the value, the better the performance.
MAX_TCP_NUMBER represent Maximum number of TCP connections in Wi-Fi(STA+SoftAP) and Ethernet scenario.
config LWIP_TCP_SACK_OUT
bool "Support sending selective acknowledgements"
default n

15
components/lwip/port/esp32/include/lwipopts.h
View File

@ -391,6 +391,21 @@ static inline uint32_t timeout_from_offered(uint32_t lease, uint32_t min)
*/
#define TCP_QUEUE_OOSEQ CONFIG_LWIP_TCP_QUEUE_OOSEQ
/**
* TCP_OOSEQ_MAX_PBUFS: The maximum number of pbufs
* queued on ooseq per pcb
*/
#if TCP_QUEUE_OOSEQ
#define TCP_OOSEQ_MAX_PBUFS CONFIG_LWIP_TCP_OOSEQ_MAX_PBUFS
#endif
/**
* TCP_OOSEQ_TIMEOUT: Timeout for each pbuf queued in TCP OOSEQ, in RTOs.
*/
#if TCP_QUEUE_OOSEQ
#define TCP_OOSEQ_TIMEOUT CONFIG_LWIP_TCP_OOSEQ_TIMEOUT
#endif
/**
* LWIP_TCP_SACK_OUT==1: TCP will support sending selective acknowledgements (SACKs).
*/