This optimizes the netif_loop_output to only schedule a call to poll when
the first packet is enqueued. This ensures netif_poll is ran once per
burst of packets that are sent (which is typical in a TCP transfer)
The old behavior scheduled a call to poll for every packet that was
enqueued and this lead to exhaustion of the MEMP_TCPIP_MSG_API memory pool
and tcpip_mbox (if port is using static mbox size). The extra callbacks are
wasted work because netif_poll drains the entire queue when ran
This issue presented itself when large TCP transfer go across the loopback
netif
This disable checksum generation and checking for the loopback netif
when LWIP_CHECKSUM_CTRL_PER_NETIF is enabled
Checksums are not needed for the loopback adapter and this will increase
performance for loopback communication
The comment in dhcp_handle_ack for 'offered_si_addr' states:
'boot file name copied in dhcp_parse_reply if not overloaded'
However this code was never reached if the packed was not 'overloaded'
Signed-off-by: goldsimon <goldsimon@gmx.de>
The code to migrate flags from original segment updating wrong variable
so both remainder and remainder_flags may be incorrect. Fix it.
Fixes: f582c8833969 ("tcp: persist timer re-work (bug #50837)")
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Joel Cunningham <joel.cunningham@me.com>
As the common code to call tcp/udp/raw_netif_ip_addr_changed is called
by multiple places, add netif_do_ip_addr_changed() to call them.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Simon Goldschmidt <goldsimon@gmx.de>
Need to undefine LWIP_ICMP6_DATASIZE before change the setting.
While at it, also remove the unneeded #ifndef LWIP_ICMP6_DATASIZE
checking because it is set in lwip/opt.h.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
struct netifapi_msg is defined in lwip/priv/api_msg.h rather than
lwip/netifapi.h. Thus remove include of lwip/netifapi.h from memp.c.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
See bug #50914( TCP_CHECKSUM_ON_COPY when adding data to
retransmission): when adding data to an already transmitted segment
that has an uneven length, the checksum was wrong.
To fix this, tcp_output_segment has to restore seg->chksum_swapped
before returning.
This hook is called from tcp_input() for all kinds of input pcbs when
selected to receive a pbuf (LISTEN, TIME_WAIT, rest). I can parse or
drop an rx pbuf.
Signed-off-by: goldsimon <goldsimon@gmx.de>
This introduces the concept of ext (external/extended) arguments per
tcp_pcb (also for listening pcbs) to store more data than just one
"void *arg" per pcb. The "arg" is for use to applications, whereas
the ext_args may be used by frameworks and leave "arg" untouched.
In addition to a void pointer, callbacks are added to help frameworks
migrate arguments from listen pcb to connection pcb and to free args
when the pcb is freed.
Signed-off-by: goldsimon <goldsimon@gmx.de>
This should make it easier to add debugging messages or other hooks
to the point where tcp pcbs are deallocated.
Signed-off-by: goldsimon <goldsimon@gmx.de>
