diff --git a/components/lwip/Kconfig b/components/lwip/Kconfig index dcdb8def08..14e3d48464 100644 --- a/components/lwip/Kconfig +++ b/components/lwip/Kconfig @@ -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 diff --git a/components/lwip/port/esp32/include/lwipopts.h b/components/lwip/port/esp32/include/lwipopts.h index c278f86eff..bbfc8bc8eb 100644 --- a/components/lwip/port/esp32/include/lwipopts.h +++ b/components/lwip/port/esp32/include/lwipopts.h @@ -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). */