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QUIC: handle EAGAIN properly on UDP sockets. Previously, the error was ignored leading to unnecessary retransmits. Now, unsent frames are returned into output queue, state is reset, and timer is started for the next send attempt.
author Vladimir Homutov <vl@nginx.com>
date Wed, 28 Jul 2021 17:23:18 +0300
parents 7df607cb2d11
children
line wrap: on
line source

CFLAGS=-O2 -Wall

LICENSE=BSD

PROGNAME=ngx_quic_reuseport_helper
RESULT=ngx_event_quic_bpf_code
DEST=../$(RESULT).c

all: $(RESULT)

$(RESULT): $(PROGNAME).o
	LICENSE=$(LICENSE) PROGNAME=$(PROGNAME) bash ./bpfgen.sh $< > $@

DEFS=-DPROGNAME=\"$(PROGNAME)\"                                               \
     -DLICENSE_$(LICENSE)                                                     \
     -DLICENSE=\"$(LICENSE)\"                                                 \

$(PROGNAME).o: $(PROGNAME).c
	clang $(CFLAGS) $(DEFS) -target bpf -c $< -o $@

install: $(RESULT)
	cp $(RESULT) $(DEST)

clean:
	@rm -f $(RESULT) *.o

debug: $(PROGNAME).o
	llvm-objdump -S -no-show-raw-insn $<

.DELETE_ON_ERROR: