9f03d2c001
TLS 1.0 records are encrypted as one continuous CBC chain where the last block of the previous record is used as the IV for the next record. As a result, TLS 1.0 records cannot be encrypted out of order but must be encrypted as a FIFO. If the later pages of a sendfile(2) request complete before the first pages, then TLS records can be encrypted out of order. For TLS 1.1 and later this is fine, but this can break for TLS 1.0. To cope, add a queue in each TLS session to hold TLS records that contain valid unencrypted data but are waiting for an earlier TLS record to be encrypted first. - In ktls_enqueue(), check if a TLS record being queued is the next record expected for a TLS 1.0 session. If not, it is placed in sorted order in the pending_records queue in the TLS session. If it is the next expected record, queue it for SW encryption like normal. In addition, check if this new record (really a potential batch of records) was holding up any previously queued records in the pending_records queue. Any of those records that are now in order are also placed on the queue for SW encryption. - In ktls_destroy(), free any TLS records on the pending_records queue. These mbufs are marked M_NOTREADY so were not freed when the socket buffer was purged in sbdestroy(). Instead, they must be freed explicitly. Reviewed by: gallatin, markj Sponsored by: Netflix Differential Revision: https://reviews.freebsd.org/D32381
FreeBSD Source:
This is the top level of the FreeBSD source directory.
FreeBSD is an operating system used to power modern servers, desktops, and embedded platforms. A large community has continually developed it for more than thirty years. Its advanced networking, security, and storage features have made FreeBSD the platform of choice for many of the busiest web sites and most pervasive embedded networking and storage devices.
For copyright information, please see the file COPYRIGHT in this directory. Additional copyright information also exists for some sources in this tree - please see the specific source directories for more information.
The Makefile in this directory supports a number of targets for building components (or all) of the FreeBSD source tree. See build(7), config(8), FreeBSD handbook on building userland, and Handbook for kernels for more information, including setting make(1) variables.
Source Roadmap:
| Directory | Description |
|---|---|
| bin | System/user commands. |
| cddl | Various commands and libraries under the Common Development and Distribution License. |
| contrib | Packages contributed by 3rd parties. |
| crypto | Cryptography stuff (see crypto/README). |
| etc | Template files for /etc. |
| gnu | Various commands and libraries under the GNU Public License. Please see gnu/COPYING and gnu/COPYING.LIB for more information. |
| include | System include files. |
| kerberos5 | Kerberos5 (Heimdal) package. |
| lib | System libraries. |
| libexec | System daemons. |
| release | Release building Makefile & associated tools. |
| rescue | Build system for statically linked /rescue utilities. |
| sbin | System commands. |
| secure | Cryptographic libraries and commands. |
| share | Shared resources. |
| stand | Boot loader sources. |
| sys | Kernel sources. |
sys/arch/conf |
Kernel configuration files. GENERIC is the configuration used in release builds. NOTES contains documentation of all possible entries. |
| tests | Regression tests which can be run by Kyua. See tests/README for additional information. |
| tools | Utilities for regression testing and miscellaneous tasks. |
| usr.bin | User commands. |
| usr.sbin | System administration commands. |
For information on synchronizing your source tree with one or more of the FreeBSD Project's development branches, please see FreeBSD Handbook.