Mercurial > hg > nginx
changeset 9094:afebde21cb32 quic
QUIC: disabled datagram fragmentation.
As per RFC 9000, Section 14:
UDP datagrams MUST NOT be fragmented at the IP layer.
author | Roman Arutyunyan <arut@nginx.com> |
---|---|
date | Sat, 06 May 2023 16:23:27 +0400 |
parents | 9ae24a9ba763 |
children | 52cddd44ec11 |
files | auto/unix src/core/ngx_connection.c |
diffstat | 2 files changed, 120 insertions(+), 0 deletions(-) [+] |
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--- a/auto/unix Thu May 04 19:29:34 2023 +0400 +++ b/auto/unix Sat May 06 16:23:27 2023 +0400 @@ -448,6 +448,54 @@ . auto/feature +# IP packet fragmentation + +ngx_feature="IP_MTU_DISCOVER" +ngx_feature_name="NGX_HAVE_IP_MTU_DISCOVER" +ngx_feature_run=no +ngx_feature_incs="#include <sys/socket.h> + #include <netinet/in.h>" +ngx_feature_path= +ngx_feature_libs= +ngx_feature_test="(void) IP_PMTUDISC_DO; + setsockopt(0, IPPROTO_IP, IP_MTU_DISCOVER, NULL, 0)" +. auto/feature + + +ngx_feature="IPV6_MTU_DISCOVER" +ngx_feature_name="NGX_HAVE_IPV6_MTU_DISCOVER" +ngx_feature_run=no +ngx_feature_incs="#include <sys/socket.h> + #include <netinet/in.h>" +ngx_feature_path= +ngx_feature_libs= +ngx_feature_test="(void) IPV6_PMTUDISC_DO; + setsockopt(0, IPPROTO_IPV6, IPV6_MTU_DISCOVER, NULL, 0)" +. auto/feature + + +ngx_feature="IP_DONTFRAG" +ngx_feature_name="NGX_HAVE_IP_DONTFRAG" +ngx_feature_run=no +ngx_feature_incs="#include <sys/socket.h> + #include <netinet/in.h>" +ngx_feature_path= +ngx_feature_libs= +ngx_feature_test="setsockopt(0, IPPROTO_IP, IP_DONTFRAG, NULL, 0)" +. auto/feature + + +ngx_feature="IPV6_DONTFRAG" +ngx_feature_name="NGX_HAVE_IPV6_DONTFRAG" +ngx_feature_run=no +ngx_feature_incs="#include <sys/socket.h> + #include <netinet/in.h>" +ngx_feature_path= +ngx_feature_libs= +ngx_feature_test="setsockopt(0, IPPROTO_IP, IPV6_DONTFRAG, NULL, 0)" +. auto/feature + + ngx_feature="TCP_DEFER_ACCEPT" ngx_feature_name="NGX_HAVE_DEFERRED_ACCEPT" ngx_feature_run=no
--- a/src/core/ngx_connection.c Thu May 04 19:29:34 2023 +0400 +++ b/src/core/ngx_connection.c Sat May 06 16:23:27 2023 +0400 @@ -1010,6 +1010,78 @@ } #endif + +#if (NGX_HAVE_IP_MTU_DISCOVER) + + if (ls[i].quic && ls[i].sockaddr->sa_family == AF_INET) { + value = IP_PMTUDISC_DO; + + if (setsockopt(ls[i].fd, IPPROTO_IP, IP_MTU_DISCOVER, + (const void *) &value, sizeof(int)) + == -1) + { + ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno, + "setsockopt(IP_MTU_DISCOVER) " + "for %V failed, ignored", + &ls[i].addr_text); + } + } + +#elif (NGX_HAVE_IP_DONTFRAG) + + if (ls[i].quic && ls[i].sockaddr->sa_family == AF_INET) { + value = 1; + + if (setsockopt(ls[i].fd, IPPROTO_IP, IP_DONTFRAG, + (const void *) &value, sizeof(int)) + == -1) + { + ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno, + "setsockopt(IP_DONTFRAG) " + "for %V failed, ignored", + &ls[i].addr_text); + } + } + +#endif + +#if (NGX_HAVE_INET6) + +#if (NGX_HAVE_IPV6_MTU_DISCOVER) + + if (ls[i].quic && ls[i].sockaddr->sa_family == AF_INET6) { + value = IPV6_PMTUDISC_DO; + + if (setsockopt(ls[i].fd, IPPROTO_IPV6, IPV6_MTU_DISCOVER, + (const void *) &value, sizeof(int)) + == -1) + { + ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno, + "setsockopt(IPV6_MTU_DISCOVER) " + "for %V failed, ignored", + &ls[i].addr_text); + } + } + +#elif (NGX_HAVE_IP_DONTFRAG) + + if (ls[i].quic && ls[i].sockaddr->sa_family == AF_INET6) { + value = 1; + + if (setsockopt(ls[i].fd, IPPROTO_IPV6, IPV6_DONTFRAG, + (const void *) &value, sizeof(int)) + == -1) + { + ngx_log_error(NGX_LOG_ALERT, cycle->log, ngx_socket_errno, + "setsockopt(IPV6_DONTFRAG) " + "for %V failed, ignored", + &ls[i].addr_text); + } + } + +#endif + +#endif } return;