Mercurial > hg > nginx-quic
view src/event/quic/ngx_event_quic_migration.h @ 8512:bb5152ed045b quic
QUIC: added support for segmentation offloading.
To improve output performance, UDP segmentation offloading is used
if available. If there is a significant amount of data in an output
queue and path is verified, QUIC packets are not sent one-by-one,
but instead are collected in a buffer, which is then passed to kernel
in a single sendmsg call, using UDP GSO. Such method greatly decreases
number of system calls and thus system load.
author | Vladimir Homutov <vl@nginx.com> |
---|---|
date | Thu, 15 Jul 2021 14:22:00 +0300 |
parents | 5186ee5a94b9 |
children | 40445fc7c403 |
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/* * Copyright (C) Nginx, Inc. */ #ifndef _NGX_EVENT_QUIC_MIGRATION_H_INCLUDED_ #define _NGX_EVENT_QUIC_MIGRATION_H_INCLUDED_ #include <ngx_config.h> #include <ngx_core.h> #define NGX_QUIC_PATH_RETRIES 3 #define NGX_QUIC_PATH_NEW 0 #define NGX_QUIC_PATH_VALIDATING 1 #define NGX_QUIC_PATH_VALIDATED 2 #define NGX_QUIC_PATH_VALID_TIME 600 /* seconds */ #define ngx_quic_path_state_str(p) \ ((p)->state == NGX_QUIC_PATH_NEW) ? "new" : \ (((p)->state == NGX_QUIC_PATH_VALIDATED) ? "validated" : "validating") ngx_int_t ngx_quic_handle_path_challenge_frame(ngx_connection_t *c, ngx_quic_path_challenge_frame_t *f); ngx_int_t ngx_quic_handle_path_response_frame(ngx_connection_t *c, ngx_quic_path_challenge_frame_t *f); ngx_quic_path_t *ngx_quic_add_path(ngx_connection_t *c, struct sockaddr *sockaddr, socklen_t socklen); ngx_int_t ngx_quic_check_migration(ngx_connection_t *c, ngx_quic_header_t *pkt); ngx_int_t ngx_quic_update_paths(ngx_connection_t *c, ngx_quic_header_t *pkt); ngx_int_t ngx_quic_handle_migration(ngx_connection_t *c, ngx_quic_header_t *pkt); void ngx_quic_path_validation_handler(ngx_event_t *ev); #endif /* _NGX_EVENT_QUIC_MIGRATION_H_INCLUDED_ */